DIY claws for climbing poles

Monter's claws and manholes: types, purpose, rules of use

A lineman's claw and manhole is a set that a person uses to climb onto an overhead power line pole. These devices are popular among electricians because...

allow you to repair or maintain power lines at a lower cost.

In this article we will look at what monter's claws are, what types of products there are, and what is equally important - how to use them.

Design features

The design of the product is as follows: two steel elements that bend in a semicircle or at a right angle, and spikes that are attached to the arcs. With their help you can cling to the support. These elements are connected to a special platform for the feet, which, in turn, have straps that secure the feet of the electricians who are raised onto the support.

The human body must be supported. For this purpose, the device comes with slings and a special holding harness. With their help, the worker is protected from falling if the structure is damaged or slips.

Installer's manholes and claws are used for electrical installation work. This is an alternative version of an aerial platform, which is used when lifting personnel to work on power poles.

This device is convenient to use, practical and economical, as it reduces the cost of maintaining electrical networks.

When it is not possible to install an aerial platform near the supports, the claws will be indispensable.

However, it should be noted that such a device can only lift one worker. When there is a need for two or more electricians to do the work, it is necessary to use only an aerial platform.

Types of claws

Monter's claws come in various designs. This depends on the types of power line towers. They differ in section type and shape. Reinforced concrete pillars come in round, rectangular, cylindrical, trapezoidal, polygonal and conical shapes. Round-shaped wooden supports are also found. So what types of devices are there? There are only 2 of them (main ones):

Crescent (KM-1, KM-2 and others). They are used when climbing wooden poles, even those with reinforced concrete attachments. This design is not adjustable, since the sickle with which the worker clings to the structure has a fixed standard size.
Manholes (universal – LU-1 and others). They differ from the previous ones in scope and design. The element with which the worker clings to the support is called a manhole. It is bent at a right angle. Used for climbing reinforced concrete pillars with a trapezoidal and rectangular cross-section. A distinctive feature is that such installation claws can be adjusted and selected to fit any size of reinforced concrete column.

This product is used for lifting power lines with voltages of 0.4/6/10/35 kV onto poles. There are also improved models that are used when lifting power lines from 110 kV to a support.

Terms of use

There are special instructions for electricians that tell you how to use electrician's claws. First of all, it is necessary to take certain safety measures when performing various works in electrical networks, especially on power lines.

Before starting work, you need to agree on the procedure, draw up all the necessary documents, prepare the workplace and allow workers to complete the task. These measures are extremely important and necessary in order to protect workers. For example, when an electrician is working, voltage may be applied to live parts (namely wires).
You need to be able to properly use the protective insulating equipment used during work.
Installer's claws are used exclusively for those supports that are indicated in the device's passport.
Before starting work, you need to check the product for damage and check the test date. In this case, yarns and belts, bolted connections, welds, fasteners, and spikes are checked. Electricians who use assembly claws must undergo additional instruction and training. They are also tested on their knowledge and checked whether they have a record of permission to carry out the work independently.
Twice a year, claws and holes should be sent for inspection. This is necessary in order to detect and correct a defect or malfunction in a timely manner.
If the integrity of the device is compromised (for example, there is a crack or a hangnail), then they are not allowed to be used.
In addition to the structure itself, before carrying out work, you need to separately check the safety belt and climb the pole only with it.
It is prohibited to change anything in the structure of the device or its belts.
It is strictly forbidden to climb a pole through which fault currents passed to the ground.
The structure must be stable and integral.

The video below clearly demonstrates how to use lineman's claws when climbing onto a support:

So we looked at what monter’s claws and manholes are. Now you know what types of devices there are and what the purpose of each design is.

Best regards,

Application area

Concrete hooks are designed to quickly lift a worker along a concrete or wooden power line pole to its upper section. Using personal equipment makes it possible to get the job done easier and faster than using a turret truck. It is not always possible to use special equipment. This depends on the terrain and urban density.

In manholes, an electrician is able to carry out installation and cable laying, carry out urgent repair work, and change lamp bulbs on wooden poles. Replacing lamps is often carried out through manholes, since due to the large number of lamp supports it is not financially profitable to use special equipment. It’s easier and faster for an electrician to climb up on his own.

DIY claws for climbing poles

1 How to make pole climbing claws
2 Monter's claws and manholes: types, purpose, rules of use
3 DIY claws
4 Claws for climbing poles: materials of modern varieties of devices (100 photos)
5 Use of claws for climbing poles: types, selection, storage

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Power lines often require repair work. It happens that this intervention must be immediate.

Then the so-called cat's claws or monter's manholes are used. Every organization involved in the maintenance and installation of power lines has such a device. An electrician's manhole is a tool that allows an electrician to easily climb a vertical pole to carry out any type of work at height.

This can be repair, installation, or preventative work. Outwardly, they look like two hooks with teeth and straps attached to them, with the help of which the device is fixed on the leg.

Claws for climbing poles: materials of modern varieties of devices (100 photos)

The tool works due to the rigidity of the metal from which it is made. The diameter of the hook is larger than the size of the post. When the hook is perpendicular to the axis of the post, the leg can move up and down.

When the hook is placed at an angle to the axis, movement becomes impossible. This is how the worker fixes his position at the desired height and begins work.

Nowadays, wooden power transmission poles are practically not found.

And this is understandable, because reinforced concrete structures are much stronger and more durable. The universal manholes have also undergone changes.

Claws for climbing poles: materials of modern varieties of devices

They were supplemented with special carbide inserts, which reduce the likelihood of slipping and reduce tool wear. These elements resemble cat paws. The material from which manholes are made is most often high-quality high-strength steel. For additional strength, the metal is treated with an anti-corrosion coating.

This not only gives the product hardness, but also increases its service life. Belts are made from several layers of wear-resistant yuft and rawhide. The belts are stitched with high-strength nylon threads. You can purchase the required type of manholes by deciding on their purpose. If you plan to work on wooden poles, then you should buy one type of device.

When working on concrete supports, a different type is chosen.

Device for climbing trees or poles

When used correctly, monter's manholes are safe and suitable for use for at least 12 months. Manholes are a universal device; they can be used in almost any climate zone with a temperature range from minus 40 to 50 degrees above zero.

This means that work on power lines can be carried out both in the northern regions and in hot and sultry conditions. The service life is indicated by the manufacturer. Time is counted from the moment the products are put into operation. No later than a year later, such a tool must be removed and recycled or disposed of. The maximum operating life of manholes is 60 months.

Components are changed during operation as needed. Store the device in a temperature range from minus 20 to 30 degrees above zero.

How to make your own pole climbing claws

It is unacceptable to store manholes in a room with an open roof; precipitation will leave a sharply negative mark on the quality of the devices. It is forbidden to store them in the open sun or in a damp place. Optimal conditions are a ventilated warehouse with an average temperature.

You cannot repair claws yourself without the appropriate knowledge and experience. If any malfunctions are detected, it is prohibited to operate the device. Monter's manholes do not require special care. After use, they must be cleaned, any remaining dirt must be removed with a rag and stored away.

Use of claws for climbing poles: types, selection, storage

Do not wash under water or wipe with wet material. To carry out work on high-rise power line poles without the use of an aerial platform, assembly manholes and claws are used to lift personnel to the top. Such simple devices help ensure the safety of workers and reduce operating costs. In the article we will tell you about monter’s claws and manholes, and give a detailed description of them.

The elements are attached to a special foot platform equipped with straps that secure the worker’s feet. To support the worker’s body in an upright position, the devices are supplied with slings and a harness that prevent a person from falling if the structure slips or is damaged. Such a device can be used to lift only one installer.

For work in pairs or as part of a team of several workers, you should use an aerial platform.

The claws are used for installation of elements of electrical networks and communication lines on vertical wooden supports or wooden poles with reinforced concrete attachments, concrete poles of 0 and 35 kV overhead lines, round reinforced concrete supports of 10 kV overhead lines with a circumference of mm.

The manholes are used during the operation of power lines on rectangular reinforced concrete poles of 0.4 and 10 kV overhead lines; universal ones are suitable for standard round reinforced concrete supports and cone-shaped poles of kV overhead lines.

Any of the enterprises that operate and maintain communication and power lines have developed their own instructions for operating claws and manholes, the main sections of which, in principle, do not differ significantly. Their most important message is that the worker must be able to correctly use tools and devices, which include claws, as well as personal protective equipment.

In addition to the device itself, immediately before starting work, you need to examine the safety belt included in the kit, without which not only work, but also staying at height is prohibited. No changes are allowed to the design of the claws; it must be reliable and intact.

Is it possible not to pay penalties on a loan?

Claws and manholes used at enterprises must be inspected and tested for static loading every six months.

Before carrying out the next one, a complete visual inspection of the devices is carried out. If necessary, repairs are carried out, which may involve replacing the main parts.

Regardless of their technical condition, claws and manholes must be written off after 7 years of operation; they are unsuitable for use.

A visual inspection of manholes and claws is carried out in order to identify damage visible to the naked eye, in the presence of which the devices are rejected. During the inspection of the claws, the technical condition and serviceability of all elements are checked: Upon completion of the visual examination, identified deficiencies must be eliminated before testing the claws for static loading.

Application

Storage Features

The use of installation equipment for climbing on supports without a safety belt is prohibited.

It is allowed to store equipment at temperatures from -20˚С to +30˚С. You cannot leave instruments outside in the open air, as precipitation negatively affects their quality indicators. Storage in areas with high humidity or direct sunlight is prohibited. Recommended conditions are a ventilated warehouse and average air temperature. It is forbidden to carry out repairs yourself, without knowledge and experience. If the hooks appear defective, they cannot be used.

Checking the serviceability of hooks

Before starting work, the equipment is tested as follows:

All parts are inspected. The strength of the belts and the condition of the spikes are specified.
The spikes are tested on a wooden support of the appropriate diameter.
The occurrence of deformation is checked by measuring the studs and grout before and after the test.
Manholes are removed from service if they are deformed.

Claws for climbing poles: materials of modern varieties of devices (100 photos)

The operation of power lines, like any other equipment, is impossible without damage or malfunctions that occur at the most inopportune moment. In order to eliminate them in a timely and efficient manner, it is necessary to have suitable tools and devices available.

To eliminate malfunctions in the operation of power lines, there are special tools, and even equipment that can be used to quickly get to the location of the breakdown. Such equipment is monter's claws (cat's claws, monter's manholes), which help you easily climb up the pole.

This type of equipment is an integral part of specialized equipment for performing work related to power lines, so they must be in the arsenal of any enterprise related to the repair of power lines.

Purpose

The main purpose of the claws is considered to be quick and convenient climbing up the pole in order to perform planned or unforeseen work.

The design of the claws is simple: the main element of the device is two hooks with straps attached to them, with which they are directly attached to the legs (each separately).

The device is made from durable and reliable metal, which guarantees safety when working at heights.

The diameter of the hook is slightly larger than the parameters of the circle post. To conveniently and correctly climb up or down, you need to install the hook perpendicular to the vertical pole. Otherwise, the worker will not be able to move up or down. How difficult is it to climb a pole without claws?

Materials used

Wooden poles for power lines have been replaced by reinforced concrete poles that are more durable and resistant to use.

In this regard, the linemen's manholes also underwent some changes: they began to use inserts made of harder alloys, as a result of which the likelihood of them slipping decreased and the potential of the device increased.

The most commonly used claw material is high-strength steel, coated with an anti-corrosion protective layer for greater durability.

The structure of the belts is multi-layered; yuft and rawhide are used as the main material for their production; in addition, in the end they are also stitched with nylon threads for greater reliability.

Varieties and properties

To perform the work efficiently and efficiently, it is necessary to use suitable equipment and tools. To move along a wooden pole, you should select the appropriate claws, for concrete ones - similarly.

Today, claws used for climbing poles are classified into:

linemen, which are used to move along round metal or wooden poles, but they are now practically not used.

assembly manholes for concrete supports, designed for movement on pillars with a round or trapezoidal cross-section. It is considered the most popular type of claw.

assembly manholes for climbing reinforced concrete supports with a trapezoidal cross-section in diameter. Plus, they can be customized and used for any type of power pole.

Auxiliary elements

Any specialist servicing power lines must have a full arsenal of tools and devices to perform the work. It must include: a protective helmet and a safety lanyard.

Selection rules

To make the right choice of claws, you need to have some knowledge in this area. When choosing a device, you should pay attention to the following nuances:

Product price. In this case, it is worth remembering that cheaper versions of the claws may use insufficiently high-quality metal, as a result of which the device will be unreliable and dangerous. Focus on medium or high price, which guarantees quality.

Manufacturer. As you know, it is better to trust proven and well-known manufacturers.

Quality. Products must comply with current GOST or TU and have quality certificates. Upon external inspection, no defects or unevenness of the seams should be noticeable. The thickness of the belts must be at least 0.3 mm, the stitches must be even and securely fixed.

and exploitation

Conditions of maintenance and operation are simple. Post claws are suitable for use in all temperature zones. The safe use period is indicated on the label. During their use, it is necessary to carry out preventive inspections and, if necessary, change components. Clean your claws regularly.

Storage conditions

It is recommended to store claws in a dry, well-ventilated area at a temperature of -20 to +30 degrees.

If damage to the claws is detected, you should stop using them, have them repaired by a specialist, or replace them with new ones.

Photo of claws for climbing poles

Selection rules

When considering the models offered by manufacturers, you need to evaluate the following details:

For quality products, the seller must have an appropriate certificate.

Price segment. It is dangerous to skimp on installation equipment. A low price may be a sign of poor quality materials from which the equipment is made. It is recommended to consider models from the middle and highest price categories.
Company manufacturer. You should not choose a model from an unknown manufacturer. It is better to give preference to a trusted company.
Qualitative indicators. A product of any type must have a certificate of compliance with TU and GOST. Metal parts must not be damaged. It is important to check that the seams are even and the thickness of the belts is at least 3 mm. The stitching on leather elements must be securely fastened.

The finished equipment indicates the release date of the product, trademark and batch number. Every six months, devices are checked for wear. A corresponding marking with the result is left on the hole. If the tools are used without errors, then they are allowed to work for at least a year. The more damage to the hooks, the lower the level of safety.

Claws for climbing poles and trees

Fitter's claws (fitter's manholes, crampons) are devices used by electricians and high-rise workers to safely climb concrete and wooden power line supports and trees.

Despite the widespread use of specialized automobile towers and telescopic lifts, mounting claws still have a very large list of situations in which their use is more appropriate and convenient: when space is cramped and there is no possibility for equipment to approach power lines, when hydraulic mechanisms break down or fail lift at the work site.

Simple claw device

Design and principle of operation

The simplest manholes for concrete supports consist of 2 elements for attaching to shoes, each of which consists of the following main components:

Oval foot support with transverse reinforcements;
2 straps holding the foot on the platform;
“Sickle” is a rectangular grip with 4 conical spikes attached at an angle of approximately 600 to the supporting platform.

Climbing onto a reinforced concrete pole using a similar device occurs as follows:

The electrician securely fixes the manholes on his shoes using belts;
Approaching the pillar, he grabs it with the grips of each of the elements of the claws;
The electrician climbs the pole, thanks to the fact that the claw grips, which he alternately rearranges in the vertical plane, located at an angle to the supporting platforms, bite into the concrete with their spikes and prevent slipping.

Using a similar principle, electrical claws designed for this type of support help you climb onto a wooden pole. Their only differences from the crampons used for concrete pillars are the semicircular shape of the grips and softer spikes.

Types of climbing cats

How to properly install street lighting

Depending on the design and purpose, all such devices are divided into claws for concrete pillars, manholes for wooden supports, dart climbers (devices used for climbing trees).

Manholes, claw-holes for reinforced concrete pillars

Catches for reinforced concrete pillars

This is the most common type of these devices, widely used by modern electricians and installers.

They consist of two oval support platforms with fastening straps for legs and rectangular grips up to 190-200 mm long, having 2 conical spikes on each of the short sides.

Claws for wooden posts

Crampons for wooden supports

Less common and less commonly used by modern electricians, manholes have one significant difference from the previous ones - their grips have a semicircular shape with a diameter of up to 220-315 mm and 5 spikes on each. The most famous model of such a device is the KM 1 brand claws.

Tree frogs

Tree climbers have claws for climbing tree trunks. They are a curved “L”-shaped splint with a semicircular casing for the shin and a sharp triangular spike located on the outer part and a belt for fixing the foot. A similar device is used by high-altitude tree trimmers and hunters.

Areas of application of KLM2

Lazy claws marked KLM 2 are the most popular and widespread device. They are used for lifting reinforced concrete trapezoidal or rectangular supports with a diameter of up to 190 mm.

On a note. There is also a universal type of these devices, which has grips that allow you to climb most modern power transmission towers. The most famous model of such manholes is LU-2.

Rules for using claws

Street lighting regulation

The procedure for using manholes consists of the following manipulations:

When working on power lines, you must have the appropriate education and permission to repair such communications;
When working on power lines, you must take care in advance to de-energize them;
Before starting work, be sure to check the integrity of the retaining belts, support platforms for the feet, grips and the spikes located on them;
It is advisable to work together - this is necessary so that in the event of an electric shock when working on an unpowered line or falling from a height if the technique of using claws is not followed, the second person can promptly provide first aid and call doctors.

Important! Manholes of a certain model and type can be used for certain supports specified in the passport. The use of such devices for lifting onto supports with a diameter larger than that specified in the passport is strictly prohibited.

Safety during work

Who is assigned group 2 electrical safety?

Both the installer and the other person using the claws must adhere to the following safety rules:

In order to minimize the risk of falling, it is necessary to use a safety (safety) belt, with which the worker must fasten himself to the pole;
To avoid electric shock and head injuries, it is imperative to use a protective helmet, special dielectric gloves, and overalls;
The shoes to which the manholes are fastened must fit tightly on the feet: before putting on the manholes, they are carefully laced or fastened;
Before you start lifting, be sure to check the stability of the support.

When using tree climbers, be sure to have a safety rope attached to a strong branch.

Equipment operating conditions

The use of manholes is permitted subject to the following conditions:

Integrity of all elements: metal frame, support platforms, grips, holding belts;
Mandatory verification of manholes - such equipment must be verified every two years in specialized laboratories. During the verification, the values of the strength characteristics of the main manhole structures declared are determined, and a conclusion is issued on the safety of using such equipment. The verified equipment must have a stamp indicating the date of verification;
It is undesirable to use manholes of dubious origin: those that do not have manufacturer logos or initial verification marks;
Requires appropriate education or training in the use of such equipment;
Absence of foreign elements - for the safe use of factory models of manholes, it is prohibited to independently modernize them, replace structural elements and spikes with homemade ones.

All the details of working with manholes are described in special instructions for electricians and high-rise installers.

Defects in mounting claws

The main defects that can be found in an electrician's claws include the following:

Cracks – such damage includes a violation of the integrity of the metal structures of the supporting platform, grip;
Burrs are sharp edges of cracks in metal parts that, in contact with belts, can cause damage;
Tears and fraying of retaining belts - with prolonged use, the material of the belts, gradually losing strength, begins to tear and separate into fibers, which is visually manifested in the form of terryness and clearly visible transverse tears;
Deformation and reduction in the strength of the studs - caused by natural fatigue of the metal, this defect manifests itself in the partial or complete loss of this element of its main functions.

Note! If one of the above-described defects is detected in factory-made models, experts recommend not to repair them yourself, but to take them to a specialized workshop for repairs. It is prohibited to use such installation equipment even with minimal damage.

Proper storage conditions

After each use, the claws must be cleaned of dirt, rust, concrete dust or crumbs.

Claws for climbing poles should be stored suspended (on hooks or special hangers), in well-ventilated, dry areas out of the reach of children and pets.

Another advantage of such equipment for installers and electricians is the possibility of making it yourself - on the Internet you can easily find both a visual drawing and video instructions for assembling claws from scrap materials with your own hands.

Proper storage conditions

After each use, the claws must be cleaned of dirt, rust, concrete dust or crumbs.

Claws for climbing poles should be stored suspended (on hooks or special hangers), in well-ventilated, dry areas out of the reach of children and pets.

DIY pole climbing claws - Metals, equipment, instructions

In order to work on high-rise poles, pole climbing claws are needed. This allows you to avoid using aerial platforms to lift to the desired point.

Electrical installation claws ensure the safety of electricians and reduce operating costs.

In this article we will look at lineman's claws, lineman's manholes for concrete and other types of such necessary equipment.

Manholes and similar structures consist of steel parts that are arranged in a semicircle or perpendicular, as well as spikes that allow them to cling to the surface of the pole. They are attached to a special foot platform, which has straps to secure the worker's feet.

To keep it in an upright position, the kit includes slings and a harness to prevent a person from falling if the wire slips or falls. However, only one worker can lift such a device. If you need to lift two or more workers, you must use the services of a lift truck.

Next, we will consider the main types of such devices depending on their purpose.

Main types of devices

Electrical claws have many modifications. However, the most used and practical are the following designs:

Universal claws;
Monter's claws;
Montersky manholes KRPO;
Monter's claw-holes KCO.

Universal claws are suitable for trapezoidal concrete supports of any height. The design consists of the following elements: footrest, hooking bracket, adjustment insert, fastening belt.

The hook is made of a metal pipe with fasteners. The footrests have special plates with recesses that allow you to fix two layers of leather clamps.

The buckles in such claws unfasten quickly and without problems, which makes them especially valuable in work.

The fitter varieties of claws and manholes, as well as the connected type, are designed to work with supports of any cross-section, weighing from 3 to 5 kilograms and a coverage of 168 to 315 millimeters.

Also suitable for working on centrifuged power line poles. Includes carbide metal spurs and leather clamps.

Having considered the main types of such structures, let’s move on to some points that help to work with them correctly.

Monter's claws for climbing wooden posts

Electrician's claws are used for lifting electricians along wooden poles or reinforced concrete supports of power lines.

They are used if there is no aerial platform, or there is no way to quickly deliver it to a given pole, or there is simply an urgent need to make repairs.

Therefore, sometimes people make repair claws with their own hands, which is undesirable, as it can lead to injuries. The claws are also called monter's holes.

general information
Selecting a purchase by manufacturer and cost
General design of installation manholes
Equipment that should be supplemented with monter's claws
Requirements for the installer
Inspections and tests throughout the entire service life
Trial of the Claws
Storage conditions

general information

This equipment is divided into the following types according to its purpose:

installer's claws for round wooden and metal supports (wooden poles are practically not used today);
manholes for concrete for round and trapezoidal supports;
claw holes with adjustable solution for trapezoidal reinforced concrete pillars.

The latter are the most common, as they can be used for any standard supports. But any of them should be used strictly on those supports that are indicated in their passports.

Any electrical installation company that installs or maintains power lines must have claws.

Manholes can be classified as universal tools; they are used in different climates with different temperatures from minus 35 to 55 degrees.

The manufacturer indicates the service life, usually it reaches a maximum of 60 months. After a year, the devices must be reviewed. Some items may be replaced.

Therefore, if there is a need to buy used repairman’s claws, then first you need to familiarize yourself with the inspection and testing rules. Used repair claws may not have any markings or operating instructions.

And high demands are placed on them - they must have sufficient strength, withstand the load of the installer, not wear out quickly, be comfortable, easy to adjust, and the spikes must be removable.

Selecting a purchase by manufacturer and cost

A person who is not yet familiar enough with this type of work should pay attention to the cost when purchasing. In matters of safety when purchasing, it is advisable not to buy cheap manholes, since the low price speaks for itself of the poor quality of the materials.

For example, a person living in Moscow can type in the Internet search engine the phrase “installer’s claws for concrete pillars Moscow price”, then today he will see many options in terms of price and manufacturer. It is better that the price is either medium or high. It is advisable to buy from a trusted manufacturer with a reliable reputation.

There are quite a large number of manufacturers of claws of all types.

You can buy electrical installation claws made in Russia on the domestic market. These products are usually distinguished by high quality workmanship and reliability. In Moscow, you can always buy such repair claws.

All equipment must comply with TU, SNiP, GOST and current international standards. An appropriate quality certificate must be present.

It is also necessary to pay attention to the date of manufacture, trademarks, batch numbers, and manufacturer's warranties.

What it is?

Due to the specifics of manufacturing manholes, the equipment is used at ambient temperatures from -30 to +55˚С.

Claws or claws are special devices for lifting a worker onto a power line pole. They are fixed on a person’s legs and make it possible to gain a foothold on a support and stay in one position for the required amount of time. The structure of the manholes will be improved to increase the reliability of the equipment and the speed of climbing to the top. There are three groups of such devices:

It is convenient to climb the round pillars using universal equipment.

Lazy. Designed for lifting reinforced concrete structures of round and trapezoidal shape in section.
Universal hooks. The installation tools are suitable for round pillars made of concrete or wood. The latter have lost their relevance.
Claw-holes. They differ in structure. Equipped with a specific control solution, especially effective in relation to trapezoidal reinforced concrete supports.

The latter devices are used more often than other types, because their specificity allows this device to be used to work with all types of standard supports. The use of manholes is permitted if this possibility is confirmed by accompanying documents. Each company specializing in electrical installation has its own set of tools for servicing power lines.

Operating rules

Each enterprise involved in the operation and maintenance of power lines must develop its own instructions for the use of manholes. However, the main sections of the rules do not differ significantly. The main message of the instructions is that personnel must be able to operate tools and devices, which include claws. Among the basic rules are:

The devices should only be used on the types of poles specified in the instructions.
Before starting work, you need to make sure that the claws are in good condition.
During the inspection, all connections, tenons and fasteners should be inspected.
Personnel performing work at height using manholes must undergo training and then pass an exam. After this, a permit is issued to carry out the work independently.
Devices must undergo mandatory inspection once every six months.
If a design malfunction is detected, the claws and manholes must be removed from the working stock.
Before starting work, the employee must check not only the device itself, but also the safety belt.

Installer's claws for working on wooden supports

The design capabilities of assembler's claws for wooden supports, commercially produced in accordance with GOST 14331-77, are presented below:

Type KM-1 – recommended support diameter 140...245 mm, throat 245±10 mm;
Type KM-2 – recommended support diameter 220...315 mm, throat 315±10 mm;
Type KM-3 - recommended support diameter 310...415 mm, throat 415±10 mm.

The platform of the KM series claws is stamped, with perforated holes, which makes it possible to increase the reliability of contact of the foot with the surface, while simultaneously reducing the weight of the platform. After stamping, the platform is hardened to a hardness of HRC 38...42. On one of the side surfaces of each platform there are ears for attaching steel arches. Along the remaining edges of the platform there are low sides, the presence of which prevents the electrician’s foot from accidentally slipping. To strengthen it during manufacturing, stiffening ribs are formed on the rear surface of the platform.

The fixing part of the arc rotates freely in the ears, ensuring the fixation of the spikes along the support at the moment of lifting the electric line operator. The permissible play should be no higher than ±15º.

The quick-wearing part of repairman's claws are the spikes, despite the fact that their initial hardness after hardening is 45...50 HRC. For claws on wooden supports, spikes are always made with conical tips. Experiencing significant frictional stress, steel spikes become dull and deformed over time. The durability of carbide studs is much higher, but they are sensitive to impacts and bending loads. Replacing the studs is not difficult, since their fastening part is threaded. The rear part of the platform is also equipped with spikes of a similar design.

The leg of the working person is attached to the arch of the claw using straps. In order to ensure elasticity, their upper part is made of yuft, and the lower part is made of rawhide impregnated with animal fat. The stitching of the belt elements is carried out with nylon threads, and the thickness of the belt and the diameter of the threads are calculated for a load of at least 140...160 kg.

Operating rules

Work at height has an increased danger, which is why there are a number of rules for its implementation and operation of equipment. Every worker - a high-altitude worker, an electrician - must know and apply the following rules for using assembly claws.

The equipment may only be used for its intended purpose. This means that when climbing up a concrete base, you need to use claws that are designed for that material.
You must adhere to safety rules.
It is worth considering the technical characteristics of the claws, because each model has a certain maximum load capacity.
Before putting on the device, it must be checked, namely the spikes and belts for deformations. Every bolt, tenon, strap and fastener must be free of damage. If defects are found on at least one of the parts, it is strictly not recommended to use the equipment.
Carefully study the product data sheet. The document must indicate the expiration date and dates of mandatory inspections.
You need to have your claws checked at least twice a year.

Also, experts do not recommend using claws from dubious and little-known manufacturers in high-altitude work.

There is a certain permissible operating temperature, which is also indicated in the product passport.

Watch the video about monter's claws below.

Topic: “Adaptation to life on the surface of the earth - lasagna”

During the operation of power lines, unexpected situations often arise, which is why they have to be repaired.

And in such cases it is very important that this work is carried out as soon as possible. To quickly solve problems that arise, you need special equipment.

First of all, you can’t do without such a device as cat’s claws or monter’s manholes.

The presence of such equipment for any organization that is responsible for the maintenance and installation of power lines is mandatory, since without it it is impossible to ensure long-term operation of power lines.

Climbing Techniques for Beginners

Climbing walls for beginners are the most optimal place for initial exercises, as this will allow you to pay maximum attention to the movements and placement of your legs and arms in comfortable conditions. It's worth noting that not all walls are good for beginners. Walls that are too steep can require a lot of strength. The ideal place is a rock with a slight slope, on which the weight of the body is transferred to the legs and not to the arms.

Climbing outdoors is also suitable, since it is not difficult to find a variety of rocks with a low inclination angle. A significant disadvantage is that you will depend on weather conditions: wet rock is quite slippery, and cold does not in any way add to the pleasure of climbing. The ideal place would be low boulders with a generous layer of grass and soft sand around. First, you should figure out whether you can go back down. Put on your climbing shoes and helmet, wipe your feet dry on a pant leg or a napkin, and go!

A rock with a convenient inclination for starting is 25-30°. You can climb such rocks without using your hands. To save effort, avoid too high or wide steps, try to rely only on the frictional force - the adhesion of the sole and the rock.

Use of claws for climbing poles: types, selection, storage

During the operation of power lines, unexpected situations often arise, which is why they have to be repaired. And in such cases it is very important that this work is carried out as soon as possible. To quickly solve problems that arise, you need special equipment. First of all, you can’t do without such a device as cat’s claws or monter’s manholes.

Source: https://spk-kovka.ru/proizvodstvo/kogti-lazit-po-derevyam-2.html

Structure

Monter's manholes (claws) are a design of two main parts:

metal hook;
belt.

The hook has the shape of a trapezoid or rectangle. For strong adhesion to the support, it is equipped with teeth and self-adjusting spikes. The belts are made of genuine leather, sewn in two layers. The total weight of the structure is from three to five kilograms.

The laz works using momentum: different levels of spikes allow the hooks to be more firmly fixed under the influence of a person’s weight. The more weight, the better the grip. The gravity of the body, whatever it may be, will create the necessary moment of momentum, allowing you to maintain the required mass.