CN110523020B - Power transmission line track safety hook with adjustable track groove width - Google Patents

Abstract

The invention discloses a power transmission line track falling protector with an adjustable track groove width, and relates to the field of power transmission line tower operation safety. The existing anti-falling device of the T-shaped anti-falling guide rail of the pole tower of the ultra-high voltage transmission line is of a unidirectional non-detachable design, and once the anti-falling device is clamped by a track at a certain position, all anti-falling devices connected in series cannot be used. The anti-falling device adopts independent left groove sliding blocks and right groove sliding blocks, and the groove width of the T-shaped groove is adjusted and locked through the T-shaped groove width adjusting mechanism and the unlocking limiting locking mechanism. The adjustable groove width locking device can effectively realize groove width adjustment and locking, can adapt to T-shaped rails with various specifications, is good in universality, and can pass through the deformation of the rails by adjusting the groove width.

Description

A transmission line track fall arrester with adjustable track groove width

Technical Field

The invention relates to the field of power transmission line tower operation safety, and in particular to a power transmission line track fall arrester with adjustable track groove width.

Background technique

The pole towers of my country's high-voltage power transmission lines are generally composed of cement poles and iron towers. In order to ensure the maintenance quality and safe operation of ultra-high voltage power transmission and transformation lines, tower climbing and maintenance are essential. The existing ultra-high voltage transmission line pole towers are relatively high. In order to ensure the safety of tower climbing workers, T-shaped anti-fall guide rails are installed between the tower climbing nails, and the track anti-fall device is used to prevent workers from falling from high altitudes. However, the anti-fall track is installed in sections, and the material is easily deformed, which makes the track prone to misalignment and bending. The existing anti-fall device is a one-way non-detachable design. Once the anti-fall device is stuck on a track somewhere, all the series-connected anti-fall devices cannot be used. The present invention can avoid the problem of the anti-fall device being stuck on the guide rail, bypass the misaligned area of the guide rail, and ensure the safety of workers climbing the tower throughout the process.

Summary of the invention

The technical problem to be solved and the technical task proposed by the present invention are to improve and perfect the existing technical solutions, and provide a transmission line track fall arrester with adjustable track groove width, so as to ensure the passage of the fall arrester and the safety of the operators. To this end, the present invention adopts the following technical solutions.

A transmission line track fall arrester with adjustable track groove width, comprising a T-slot slider matched with the T-track, a locking device for automatically locking and clamping the T-track when a worker falls suddenly, the locking device comprising a locking tongue, a worker safety rope fixed on the locking tongue, the locking tongue arranged in the middle of the upper part of the T-slot slider, the T-slot located in the middle of the lower part of the T-slot slider, the notch facing downward, the T-slot slider consisting of a left-slot slider and a right-slot slider, after the left-slot slider and the right-slot slider are combined, the lower middle part thereof is a complete T-slot, the upper part of the T-slot slider is provided with a T-slot width adjustment mechanism and an unlockable limit locking mechanism to adjust the groove width of the T-slot and lock it. When the fall arrester moves forward along the track and encounters a deformation obstacle of the track, the T-slot width is increased by unlocking the limit locking mechanism and then by the T-slot width adjustment mechanism, so that the fall arrester passes through the deformed part, the operation is simple, safe and reliable, and the passability of the fall arrester and the safety of the operator can be effectively guaranteed.

As a preferred technical means: the T-slot width adjustment mechanism includes a slot width adjustment slide bar, which passes through the slide holes provided on the right slot slider and the lock tongue from right to left and is fixed on the left slot slider, the right slot slider and the lock tongue can slide along the slot width adjustment slide bar, and an anti-drop tail stop is provided at the right end of the slot width adjustment slide bar to prevent the right slot slider and the lock tongue from falling out of the right end of the slot width adjustment slide bar. The slot width can be adjusted conveniently.

As a preferred technical means: a spring is inserted into the right part of the slot width adjustment slide bar, and the spring diameter is smaller than the anti-drop tail stop diameter. After the slot width is adjusted to be wider, the spring rebounds to make the left slot slide block and the right slot slide block clamp the track, which is convenient for subsequent locking operation.

As a preferred technical means: the middle right part of the sliding hole is expanded into a countersink to accommodate part of the length of the spring. By setting the spring countersink, most of the spring is accommodated in the countersink, which can effectively shorten the length of the slot width adjustment slide rod.

As a preferred technical means: the head of the slot width adjustment slide rod is screwed and fixed to the left slot slide block through threaded engagement. The threaded fixing method has a simple structure, is easy to operate, and is easy to disassemble.

As a preferred technical means: a limit fixing slide bar is provided between the right groove slider, the lock tongue and the left groove slider, the right groove slider, the lock tongue and the left groove slider are in sliding cooperation with the limit fixing slide bar, the right end of the limit fixing slide bar is provided with a limit tail stop to prevent the right groove slider from escaping from the right side, and the left side of the limit fixing slide bar is fixed by the unlockable limit locking mechanism. Through the double slide bar method, the force is more balanced when pulling the right groove slider and the lock tongue to slide, making the T-slot width adjustment operation smoother.

As a preferred technical means: the position-limiting locking mechanism includes a card buckle rotatably connected to the left end of the slot width adjustment slide bar and a card buckle slot provided on the left part of the position-limiting fixed slide bar. After the T-slot slider is inserted into the T-track, the card buckle is rotated to buckle the card buckle slot for locking. When the T-slot needs to be adjusted to become wider, the card buckle is rotated in the opposite direction to unlock, and the right slot slider, the lock tongue and the left slot slider can slide along the position-limiting fixed slide bar. The locking mechanism has a simple structure, is easy to operate, and can effectively achieve unlocking and locking.

As a preferred technical means: the number of the card buckle slots is between 2 and 4, and each card buckle slot position corresponds to a standard T-track width specification. It can effectively adapt to the commonly used T-track widths of various specifications and has good versatility.

As a preferred technical means: the left lower edge of the lock tongue and the right edge of the left groove slider that is adjacent to the bottom surface of the lock tongue are chamfered, so that the lock tongue can play a better guiding role when retreating under the resilience of the spring.

As a preferred technical means: the upper part of the lock tongue is provided with a safety rope fixing through hole, and the lock tongue is provided with a torsion spring, which is in an open state by default. When a worker misses a step or falls, the torsion spring is pulled downward and automatically locks the lock tongue, so that the lock tongue is locked on the T-shaped track. The structure is simple and the locking technology is widely used.

As a preferred technical means: the right and left groove sliders are provided with two relative rotatable vertical rollers on the side moving along the T-track, the distance between the two vertical rollers is smaller than the width of the T-slot and there is a rotation gap between the two vertical rollers and the T-track. This can effectively reduce the contact surface between the T-track and the T-slot, reduce friction resistance, and make the fall arrester move forward more labor-saving.

Beneficial effects:

1. When the fall arrester moves along the track and encounters a deformation obstacle, the limit locking mechanism is unlocked and then the T-slot width is increased through the T-slot width adjustment mechanism to allow the fall arrester to pass through the deformed part. The operation is simple, safe and reliable, which can improve the availability of the fall arrester when the quality of the tower climbing guide rail is poor, and can effectively ensure the passability of the fall arrester and the safety of the operators.

2. Through multiple card buckle slots, the adjustment and locking of multiple T-slot widths can be effectively realized, making it convenient to realize the universality of the fall arrester for different track widths.

3. Through the guidance of the double slide bar and the rebound pressure of the spring, the directional adjustment of the width and the rebound pre-tightening can be easily achieved, and the width can be locked through the card buckle. The adjustment operation is simple, convenient, stable and reliable.

4. The rotatable vertical roller can effectively reduce the contact area between the T-track and the T-slot, reduce friction resistance, and make the forward movement of the fall arrester more labor-saving.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the main structure of the present invention.

FIG. 2 is a schematic diagram of the side structure of the present invention.

Fig. 3 is a schematic diagram of dismissal from above of the present invention.

FIG. 4 is an enlarged schematic diagram of portion A in FIG. 3 of the present invention.

FIG. 5 is a schematic diagram of T-slot width adjustment of the present invention.

FIG. 6 is an enlarged schematic diagram of portion B in FIG. 5 of the present invention.

In the figure: 1-left slot slider; 2-right slot slider; 3-lock tongue; 4-slot width adjustment slide bar; 5-spring; 6-card buckle; 7-limited fixed slide bar; 8-vertical roller; 9-T-slot; 401-anti-slip tail stop; 701-limited tail stop; 702-card buckle slot.

Detailed ways

The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings.

As shown in Figures 1-6, a transmission line track fall arrester with adjustable track groove width includes a T-slot 9 slider matched with the T-track, a locking device for automatically locking and clamping the T-track when a worker falls suddenly, the locking device includes a locking tongue 3, a worker safety rope is fixed on the locking tongue 3, the locking tongue 3 is arranged in the upper middle of the T-slot 9 slider, the T-slot 9 is located in the lower middle of the T-slot 9 slider, the notch faces downward, the T-slot 9 slider consists of a left slot slider 1 and a right slot slider 2, after the left slot slider 1 and the right slot slider 2 are combined, the lower middle thereof is a complete T-slot 9, and the upper part of the T-slot 9 slider is provided with a T-slot 9 width adjustment mechanism and an unlockable limit locking mechanism to adjust the slot width of the T-slot 9 and lock it.

In order to adjust the slot width, the T-slot 9 width adjustment mechanism includes a slot width adjustment slide bar 4, which passes through the slide holes provided on the right slot slider 2 and the lock tongue 3 from right to left and is fixed to the left slot slider 1. The right slot slider 2 and the lock tongue 3 can slide along the slot width adjustment slide bar 4, and the right end of the slot width adjustment slide bar 4 is provided with an anti-slip tail stopper 401 to prevent the right slot slider 2 and the lock tongue 3 from slipping out from the right end of the slot width adjustment slide bar 4. The slot width can be adjusted conveniently.

In order to facilitate the subsequent locking operation, a spring 5 is passed through the right part of the slot width adjustment slide bar 4, and the diameter of the spring 5 is smaller than the diameter of the anti-drop tail stop 401. After the slot width is adjusted to be widened, the spring 5 rebounds to make the left slot slide block 1 and the right slot slide block 2 clamp the track, so as to realize the track pre-clamping and positioning, which is convenient for the subsequent locking operation.

In order to shorten the length of the slot width adjustment slide bar 4, the middle right part of the slide hole is expanded to a countersink that accommodates part of the length of the spring 5. By arranging the spring 5 countersink, most of the spring 5 is accommodated in the countersink, which can effectively shorten the length of the slot width adjustment slide bar 4.

In order to facilitate fixing and disassembly, the head of the slot width adjustment slide bar 4 is screwed and fixed with the left slot slide block 1 through threaded matching. The threaded fixing method has a simple structure, convenient operation and easy disassembly.

In order to make the width adjustment operation of the T-slot 9 smoother, a limit fixing slide bar 7 is inserted between the right slot slider 2, the lock tongue 3 and the left slot slider 1. The right slot slider 2, the lock tongue 3 and the left slot slider 1 are in sliding cooperation with the limit fixing slide bar 7. The right end of the limit fixing slide bar 7 is provided with a limit tail stop 701 to prevent the right slot slider 2 from escaping from the right side. The left side of the limit fixing slide bar 7 is fixed by an unlockable limit locking mechanism. Through the double slide bar method, the force is more balanced when the right slot slider 2 and the lock tongue 3 are pulled to slide, so that the width adjustment operation of the T-slot 9 is smoother.

In order to realize simple locking and unlocking operation, the position-limiting locking mechanism includes a card buckle 6 rotatably connected to the left end of the slot width adjustment slide bar 4 and a card buckle slot 702 provided on the left part of the position-limiting fixed slide bar 7. After the T-slot 9 slider is inserted into the T-track, the card buckle 6 is rotated to buckle the card buckle slot 702 for locking. When the T-slot 9 needs to be adjusted to become wider, the card buckle 6 is reversely rotated to unlock, and the right slot slider 2, the lock tongue 3 and the left slot slider 1 can slide along the position-limiting fixed slide bar 7. The locking mechanism has a simple structure, is easy to operate, and can effectively realize unlocking and locking.

In order to adapt to the two commonly used T-track specifications, there are two card buckle slots 702, and each card buckle slot 702 position corresponds to a standard T-track width specification. It can effectively adapt to the two commonly used T-track widths and has good versatility. This example is a T-track that meets both 35mm and 42mm sizes.

In order to play a better guiding role, the left lower end edge line of the lock tongue 3 and the right end edge line of the left groove slide block 1 that is adjacent to the bottom surface of the lock tongue 3 are chamfered. Under the resilience of the spring 5, the lock tongue 3 can play a better guiding role when retreating.

In order to achieve locking and preventing falling, a safety rope fixing through hole is provided on the upper part of the lock tongue 3, and a torsion spring is provided on the lock tongue 3. The torsion spring is in an open state by default. When a worker steps on air or falls, the torsion spring is automatically locked by a downward pulling force, so that the lock tongue 3 is locked on the T-shaped track. The structure is simple and the locking technology is widely used.

In order to reduce friction resistance, the right slot slider 2 and the left slot slider 1 are provided with two opposite rotatable vertical rollers 8 on the side moving along the T-track. The distance between the two vertical rollers 8 is smaller than the width of the T-slot 9 and there is a rotation gap between the two vertical rollers 8 and the T-track. This can effectively reduce the contact surface between the T-track and the T-slot 9, reduce friction resistance, and make the forward movement of the fall arrester more labor-saving.

When in use, when the fall arrester moves along the T-track and encounters a deformation obstacle of the T-track, the card buckle 6 is rotated in the opposite direction to leave the card buckle slot 702 to release the locking state of the width of the T-slot 9, and the locking tongue 3 and the right slot slider 2 are pulled to the right by hand to increase the width of the T-slot 9, so that the fall arrester passes through the deformed part, and then the hand is released, and the width of the T-slot 9 is restored under the rebound force of the spring 5, and then the card buckle 6 is rotated to engage with the card buckle slot 702 to achieve the locking of the width of the T-slot 9; when adjusting the width of the T-slot 9 for different T-track widths, the card buckle 6 needs to be rotated to engage with another card buckle slot 702 after unlocking and adjusting the width of the T-slot 9, so as to achieve the width change and locking of the T-slot 9 for different T-track widths. The operation is simple, safe and reliable, and can effectively ensure the passability of the fall arrester and the safety of the operators, and realize the versatility of the fall arrester.

The fall arrester in this example is made of high-strength aluminum alloy material and is lightweight, which reduces the additional tower climbing load on operators caused by the fall arrester.

The transmission line track fall arrester with adjustable track groove width shown in Figures 1-6 above is a specific embodiment of the present invention, which has embodied the substantial characteristics and progress of the present invention. According to actual use needs and under the guidance of the present invention, equivalent modifications in shape, structure, etc. can be made to it, which are all within the protection scope of this scheme.

Claims (3)

1. The utility model provides a transmission line track safety hook with adjustable track groove width, includes T type groove (9) slider that matches with T type track, is used for the orbital locking device of automatic locking chucking T type when staff suddenly weighs down, locking device include spring bolt (3), fixed staff's safety rope on spring bolt (3), spring bolt (3) locate in the middle of the upper portion of T type groove (9) slider, T type groove (9) be located in the middle of the lower part of T type groove (9) slider, notch down, its characterized in that: the T-shaped groove (9) slide block consists of a left groove slide block (1) and a right groove slide block (2), the left groove slide block (1) and the right groove slide block (2) are combined, the middle of the lower part of the left groove slide block and the right groove slide block is provided with a complete T-shaped groove (9), and the upper part of the T-shaped groove (9) slide block is provided with a T-shaped groove (9) width adjusting mechanism and an unlocking limiting locking mechanism so as to adjust the groove width of the T-shaped groove (9) and lock the T-shaped groove;

The T-shaped groove (9) width adjusting mechanism comprises a groove width adjusting slide bar (4), the groove width adjusting slide bar (4) sequentially penetrates through slide holes formed in a right groove slide block (2) and a lock tongue (3) from right to left and is fixed on a left groove slide block (1), the right groove slide block (2) and the lock tongue (3) can slide along the groove width adjusting slide bar (4), and an anti-falling tail baffle (401) is arranged at the right end of the groove width adjusting slide bar (4) so as to prevent the right groove slide block (2) and the lock tongue (3) from falling out of the right end of the groove width adjusting slide bar (4);

the right part of the groove width adjusting slide bar (4) is penetrated with a spring (5), and the diameter of the spring (5) is smaller than that of the anti-falling tail baffle (401);

The middle right part of the sliding hole is expanded into a counter bore for accommodating the length of part of the spring (5);

The head of the groove width adjusting slide bar (4) is screwed and fixed with the left groove slide block (1) through threaded fit;

A limiting fixed sliding rod (7) is arranged between the right groove sliding block (2), the lock tongue (3) and the left groove sliding block (1) in a penetrating way, sliding fit is formed between the right groove sliding block (2), the lock tongue (3) and the left groove sliding block (1) and the limiting fixed sliding rod (7), a limiting tail baffle (701) for preventing the right groove sliding block (2) from falling out from the right side is arranged at the right end of the limiting fixed sliding rod (7), and the left side of the limiting fixed sliding rod (7) is fixed through the unlocking limiting locking mechanism;

the limiting locking mechanism comprises a card buckle (6) rotatably connected to the left end of the groove width adjusting slide bar (4) and a card buckle groove (702) arranged at the left part of the limiting fixed slide bar (7), after a T-shaped groove (9) slide block is sleeved into a T-shaped track, the card buckle groove (702) is buckled by rotating the card buckle (6) to lock, when the T-shaped groove (9) needs to be adjusted to be widened, the card buckle (6) is reversely rotated to unlock, and the right groove slide block (2), the lock tongue (3) and the left groove slide block (1) can slide along the limiting fixed slide bar (7);

The upper portion of spring bolt (3) be equipped with the fixed through hole of safety rope, be equipped with the torsional spring on spring bolt (3), the torsional spring defaults to be in the open mode, in the condition that appears the staff steps on or falls down, the torsional spring receives downward pulling force automatic locking spring bolt (3), makes spring bolt (3) lock on T type track.

2. The transmission line track fall arrester with adjustable track groove width as claimed in claim 1, wherein: the number of the card buckling grooves (702) is between 2 and 4, and each card buckling groove (702) corresponds to a standard T-shaped track width specification.

3. The transmission line track fall arrester with adjustable track groove width as claimed in claim 2, wherein: chamfering is carried out on the left lower end edge of the lock tongue (3) and the right end edge of the left groove sliding block (1) which is faced with the bottom surface of the lock tongue (3).