阅读说明：本技术 一种带自动落锁结构的电力爬梯 (Electric power cat ladder of automatic locking structure that falls in area ) 是由 毛文峰 于 2021-07-23 设计创作，主要内容包括：本发明属于电力维修工具设备技术领域,具体的说是一种带自动落锁结构的电力爬梯,包括本体和半圆形的锁紧环；所述本体顶部通过转轴铰接有铰支座,铰支座与锁紧环固连；所述锁紧环内周开设有一号滑孔,一号滑孔中滑动连接有T形的滑动座,滑动座远离锁紧环的一端为弧形结构；所述锁紧环内开设有贯穿锁紧环的半圆形的通孔,通孔内滑动连接有一对弧形的滑杆,两个滑杆之间固连有弹簧；所述一号滑孔与通孔连通；本发明通过爬梯顶部靠近并接触电线杆时,通过电线杆挤压滑动座,使得一号滑孔中的压缩空气充入通孔内,进而驱动滑杆伸出并环抱电线杆,对爬梯进行自动落锁,进一步增加爬梯的稳定性,保证检修人员的人身安全和检修效率。(The invention belongs to the technical field of power maintenance tool equipment, and particularly relates to a power crawling ladder with an automatic locking structure, which comprises a body and a semicircular locking ring; the top of the body is hinged with a hinged support through a rotating shaft, and the hinged support is fixedly connected with the locking ring; a first sliding hole is formed in the inner periphery of the locking ring, a T-shaped sliding seat is connected in the first sliding hole in a sliding mode, and one end, far away from the locking ring, of the sliding seat is of an arc-shaped structure; a semicircular through hole penetrating through the locking ring is formed in the locking ring, a pair of arc-shaped sliding rods are connected in the through hole in a sliding manner, and a spring is fixedly connected between the two sliding rods; the first sliding hole is communicated with the through hole; when the top of the crawling ladder is close to and contacts with the electric pole, the sliding seat is extruded by the electric pole, so that compressed air in the first sliding hole is filled into the through hole, the sliding rod is driven to extend out and surround the electric pole, the crawling ladder is automatically locked, the stability of the crawling ladder is further improved, and the personal safety and the maintenance efficiency of maintainers are guaranteed.)

1. The utility model provides an electric power cat ladder of automatic locking structure that falls in area which characterized in that: comprises a body (1) and a semicircular locking ring (11); the top of the body (1) is hinged with a hinged support (13) through a rotating shaft (12), and the hinged support (13) is fixedly connected with a locking ring (11); a first sliding hole (14) is formed in the inner periphery of the locking ring (11), a T-shaped sliding seat (15) is connected in the first sliding hole (14) in a sliding mode, and one end, far away from the locking ring (11), of the sliding seat (15) is of an arc-shaped structure; a semicircular through hole (16) penetrating through the locking ring (11) is formed in the locking ring (11), a pair of arc-shaped sliding rods (17) are connected in the through hole (16) in a sliding manner, and a spring is fixedly connected between the two sliding rods (17); the first sliding hole (14) is communicated with the through hole (16).

2. An electric ladder with an automatic locking structure as claimed in claim 3, characterized in that: a set of cutting unit of arc inner periphery equipartition of slide bar (17), cutting unit include a set of align to grid's sawtooth (2), and sawtooth (2) do not interfere the free slip of slide bar (17).

3. The electric ladder stand with the automatic drop lock structure as claimed in claim 2, wherein: the width of the sawteeth (2) in each group of cutting units is sequentially increased from one side to the other side; the width of the saw teeth (2) on one side of the cutting unit close to the end part of the locking ring (11) is the minimum.

4. An electric ladder with an automatic locking structure as claimed in claim 3, characterized in that:

one end of the sliding rod (17) far away from the sliding seat (15) is rotatably connected with a roller (21) through a rotating pin; the inner periphery of the locking ring (11) is rotatably connected with a winding roller (22) at a position close to the sliding seat (15), and a coil spring for resetting is fixedly connected in the winding roller (22); a conveying belt (23) is wound on the winding roller (22), and the other end of the conveying belt (23) rounds the roller (21) and then is fixedly connected with the outer side of the locking ring (11); the saw teeth (2) are fixedly connected to one side of the conveying belt (23) close to the center of the locking ring (11).

5. The electric ladder stand with the automatic drop lock structure as claimed in claim 4, wherein: a group of second sliding holes (24) are uniformly distributed on the inner periphery of the locking ring (11), and ejector pins (25) are connected in the second sliding holes (24) in a sliding manner; a tension spring is fixedly connected between the thimble (25) and the bottom of the second sliding hole (24); the rotating shaft (12) is rotatably connected with a pulley (26), the pulley (26) is sleeved with a pull rope (27), one end of the pull rope (27) is fixedly connected with a pull ring (28), and the other end of the pull rope (27) is connected with a balancing weight (29); a wedge block (3) is fixedly connected to one side of the pull rope (27) close to the pull ring (28), and an ejector pin (25) at a position on the locking ring (11) corresponding to the wedge block (3) penetrates through a second sliding hole (24) at a corresponding position and then abuts against the wedge block (3); an annular groove (31) is formed in the position, located in the second sliding hole (24), of the thimble (25), a sliding ring (32) is fixedly connected with the position, corresponding to the annular groove (31), in the second sliding hole (24), and the sliding ring (32) is connected with the annular groove (31) in a sliding and sealing mode; and hydraulic oil is filled in the annular grooves (31) on the sides of the sliding rings (32) far away from the axis of the locking ring (11), and the hydraulic oil is communicated with the bottoms of the second sliding holes (24) through the first holes (33).

6. The electric ladder stand with the automatic drop lock structure as claimed in claim 5, wherein: an annular sealing groove is formed in the sliding ring (32), an annular sponge ring (34) is fixedly connected in the sealing groove, and strong brine is soaked in the sponge ring (34).

7. The electric ladder stand with the automatic drop lock structure as claimed in claim 6, wherein: a third hole (35) is formed in one end, close to the needle point, of the thimble (25), a sliding column (36) is connected in the third hole (35) in a sliding mode, a pressure spring (37) is connected between the sliding column (36) and the bottom of the third hole (35), and a first rack (38) is fixedly connected in grooves formed in two sides of the sliding column (36); one end of the thimble (25) close to the needle point is symmetrically provided with a pair of arc-shaped sliding chutes (39), and the sliding chutes (39) are connected with elastic shoveling blades (4) in a sliding way; a second rack (41) is arranged on one side, close to the first rack (38), of the scraper knife (4); a gear (42) is arranged between the first rack (38) and the second rack (41), the gear (42) is rotatably connected with the thimble (25), and the gear (42) is respectively meshed with the first rack (38) and the second rack (41) at corresponding positions.

8. The electric ladder stand with the automatic drop lock structure as claimed in claim 7, wherein: a water through hole (43) penetrating through the sliding column (36) is formed in the sliding column (36); the third hole (35) penetrates through the thimble (25), a limiting ring (44) is fixedly connected in the third hole (35), and one side, close to the pressure spring (37), of the limiting ring (44) is fixedly connected with the pressure spring (37); a piston (46) is connected in a sliding manner in a blind hole (45) formed in the balancing weight (29), the pull rope (27) is hollow, and one end, close to the piston (46), of the pull rope (27) is communicated with the blind hole (45) through a fourth hole (47); one end of the pull rope (27) positioned in the blind hole (45) is sleeved with a return spring; and a fifth hole (48) communicated with the hollow part of the pull rope (27) is formed in the wedge-shaped block (3) at a position corresponding to the water through hole (43).

9. The electric ladder with the automatic locking structure as claimed in claim 8, wherein: a group of butterfly bags (5) are fixedly connected between the sliding seat (15) and the locking ring (11), and the butterfly bags (5) are communicated with the water through holes (43) through air pipes; strong brine is filled in the butterfly-shaped bag (5), and the volume of the strong brine is not more than one third of the volume of the butterfly-shaped bag (5).

10. The electric ladder stand with the automatic drop lock structure as claimed in claim 9, wherein: cutting seams (51) are arranged in the middle of the saw teeth (2), air bags (52) are fixedly connected in spherical cavities formed in the bottoms of the cutting seams (51), and the air bags (52) are communicated with the tops of the butterfly-shaped bags (5) through pipelines.

Technical Field

The invention belongs to the technical field of power maintenance tool equipment, and particularly relates to a power crawling ladder with an automatic locking structure.

Background

The electric power cat ladder of traditional structure generally includes cat ladder body and the insulating material of cladding at its surface, and the electric power cat ladder of traditional structure is the same with the application method of ordinary cat ladder, during the use, only need lean on the electric power cat ladder on waiting to examine equipment can.

Some technical schemes related to the electric crawling ladder also appear in the prior art, for example, a chinese patent with application number 2019202818889 discloses an electric crawling ladder with an automatic locking structure, which comprises a crawling ladder body, a rotating part and an automatic locking mechanism, wherein one end of the crawling ladder body is rotatably connected with the lower end of the rotating part, and the upper end of the rotating part is fixedly connected with the automatic locking mechanism through threads; the utility model discloses structural design is simple, adopts automatic locking mechanism that falls, plays high-efficient, stable fixed action to the cat ladder, can guarantee staff's personal safety on the cat ladder simultaneously, improve maintenance efficiency.

But among the prior art electrical power rush-repair often uses the cat ladder, climb wire pole and other power equipment through the cat ladder, and then reach the operation position fast and carry out electrical power rush-repair operation, but in the cold season of weather or area, outdoor temperature is lower, often take place to freeze rain weather phenomenon, road surface snow or ponding melt repeatedly and freeze simultaneously, bring serious threat for the operation of cat ladder, the ice-cube of adhesion is difficult to provide sufficient frictional force for the steady support of cat ladder on the wet and slippery and the wire pole on ground, make the operating personnel take place the landing accident when overhauing easily, seriously threaten maintainer's personal safety.

Therefore, the invention provides the electric ladder with the automatic locking structure.

Disclosure of Invention

In order to make up for the defects of the prior art, the problem that in the prior art, a crawling ladder is often used for power line repair, a telegraph pole and other power equipment are climbed through the crawling ladder, and then the crawling ladder can quickly reach an operation position to perform power line repair operation, but in cold seasons or regions, the outdoor temperature is low, the freezing rain weather phenomenon often occurs, meanwhile, accumulated snow or water on the road surface is repeatedly melted and frozen, so that serious threats are brought to the operation of the crawling ladder, the ice blocks adhered to the slippery ground and the telegraph pole cannot provide enough friction force for stable support of the crawling ladder, so that the slipping accident occurs when an operator is easy to overhaul, and the personal safety of the maintainer is seriously threatened is solved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an electric crawling ladder with an automatic locking structure, which comprises a body and a semicircular locking ring; the top of the body is hinged with a hinged support through a rotating shaft, and the hinged support is fixedly connected with the locking ring; a first sliding hole is formed in the inner periphery of the locking ring, a T-shaped sliding seat is connected in the first sliding hole in a sliding mode, and one end, far away from the locking ring, of the sliding seat is of an arc-shaped structure; a semicircular through hole penetrating through the locking ring is formed in the locking ring, a pair of arc-shaped sliding rods are connected in the through hole in a sliding manner, and a spring is fixedly connected between the two sliding rods; the first sliding hole is communicated with the through hole; when the electric power rush-repair machine works, the crawling ladder is often used in the prior art, a telegraph pole and other electric equipment are climbed through the crawling ladder, and then the electric power rush-repair machine can quickly reach an operation position to perform electric power rush-repair operation, but in cold seasons or regions, the outdoor temperature is low, the freezing and rain weather phenomenon often occurs, meanwhile, snow or accumulated water on the road surface is repeatedly melted and frozen, so that serious threats are brought to the operation of the crawling ladder, the slippery ground and ice blocks adhered to the telegraph pole are difficult to provide enough friction force for stable support of the crawling ladder, so that the slipping accident occurs when an operator easily overhauls, and the personal safety of the maintainer is seriously threatened; at the moment, when the top of the crawling ladder is close to and contacts with the electric wire pole, the sliding seat is extruded by the electric wire pole to slide into the first sliding hole, compressed air in the first sliding hole is filled into the through hole, the sliding rod is driven to extend out and surround the electric wire pole, automatic falling locking is carried out on the crawling ladder, the stability of the crawling ladder is further improved, the electric wire pole is tightly held by the sliding rod to improve the connection strength of the crawling ladder and the electric wire pole, meanwhile, when an operator climbs the crawling ladder, the crawling ladder applies higher pressure to the sliding seat, air pressure in the through hole is further increased, the surrounding locking effect of the electric wire pole is further improved by the sliding rod, and personal safety and maintenance efficiency of the maintainer are guaranteed.

Preferably, a group of cutting units are uniformly distributed on the arc-shaped inner periphery of the sliding rod, each cutting unit comprises a group of uniformly arranged saw teeth, and the saw teeth do not interfere the free sliding of the sliding rod; the cutting unit is driven to continuously mark the ice layer on the periphery of the telegraph pole when the through hole is extended out through the sliding rod, so that the sawteeth cut and crush the ice layer, the ice layer is broken and then falls off from the telegraph pole, the clamping strength and the friction force between the sliding rod and the telegraph pole are further increased, and the influence of ice blocks on the stability of the crawling ladder is reduced.

Preferably, the width of the sawteeth in each group of cutting units is sequentially increased from one side to the other side; the width of the saw teeth on one side of the cutting unit close to the end part of the locking ring is the minimum; the sawtooth through the difference in width is constantly scraped and is cut the ice sheet for the ice sheet is expanded the extrusion by the sawtooth of rear portion width broad after being cut, further increases the crack width on ice sheet, increases the efficiency that the ice sheet is broken and peels off.

Preferably, one end of the sliding rod, which is far away from the sliding seat, is rotatably connected with a roller through a rotating pin; the inner periphery of the locking ring is rotatably connected with a winding roller at a position close to the sliding seat, and a coil spring for resetting is fixedly connected in the winding roller; a conveyer belt is wound on the winding roller, and the other end of the conveyer belt is fixedly connected with the outer side of the locking ring after bypassing the roller; the saw teeth are fixedly connected to one side of the conveying belt close to the center of the locking ring; the roller is driven to stretch the conveying belt when the sliding rod slides to the outside of the through hole, the conveying belt is enabled to continuously move towards the direction close to the end part of the sliding rod after being led out from the winding roller, the saw teeth are driven to cut and break an ice layer in an accelerated mode, broken ice blocks between the saw teeth and the telegraph pole are conveyed out by the conveying belt moving towards the end of the sliding rod quickly, broken ice between the sliding rod and the locking ring and the telegraph pole is further reduced, the locking effect and the friction force between the locking ring and the telegraph pole are increased, the stability of the ladder stand body is further guaranteed, meanwhile, the broken ice adhesion is reduced, the adhesion between the ladder stand and the telegraph pole is reduced, and the dismantling efficiency of the ladder.

Preferably, a group of second sliding holes are uniformly distributed on the inner periphery of the locking ring, and ejector pins are connected in the second sliding holes in a sliding manner; a tension spring is fixedly connected between the thimble and the bottom of the second sliding hole; the rotating shaft is rotatably connected with a pulley, a pull rope is sleeved on the pulley, one end of the pull rope is fixedly connected with a pull ring, and the other end of the pull rope is connected with a balancing weight; a wedge-shaped block is fixedly connected to one side of the pull rope close to the pull ring, and an ejector pin at a position on the locking ring corresponding to the wedge-shaped block penetrates through a second sliding hole at a corresponding position and then abuts against the wedge-shaped block; an annular groove is formed in the position, located in the second sliding hole, of the thimble, a sliding ring is fixedly connected with the position, corresponding to the annular groove, in the second sliding hole, and the sliding ring is connected with the annular groove in a sliding and sealing mode; the annular groove on one side of the slip ring, which is far away from the axis of the locking ring, is filled with hydraulic oil, and the hydraulic oil is communicated with the bottom of the first sliding hole and the second sliding hole through the first sliding hole; pull the stay cord downwards through the pull ring and promote the balancing weight, later loosen the pull ring, make balancing weight free fall, later the balancing weight drives stay cord and wedge motion, move to thimble end part corresponding position when the wedge, the wedge extrudes the thimble in the twinkling of an eye, balancing weight sudden stop simultaneously, the impact force when utilizing the balancing weight sudden stop drives the ice sheet that the thimble slides and assaults on the wire pole, further increase the breakage and the efficiency that drops of ice sheet, the thimble extrudees hydraulic oil when sliding in the sliding ring simultaneously, through the thimble of the ejecting other positions of hydraulic transmission, further increase the crushing efficiency of wire pole periphery ice-cube.

Preferably, an annular sealing groove is formed in the slip ring, an annular sponge ring is fixedly connected in the sealing groove, and strong brine is soaked in the sponge ring; through the lubrication of the sponge ring and the strong brine to the thimble, the moisture on the upper part of the telegraph pole is reduced to permeate into the second sliding hole and be frozen, so that the thimble is prevented from sliding smoothly, and the deicing efficiency of the thimble is further ensured.

Preferably, a third hole is formed in one end, close to the needle point, of the thimble, a sliding column is connected in the third hole in a sliding mode, a pressure spring is connected between the sliding column and the bottom of the third hole, and a first rack is fixedly connected in grooves formed in two sides of the sliding column; one end of the thimble close to the needle point is symmetrically provided with a pair of arc-shaped chutes, and the chutes are connected with elastic shoveling knives in a sliding way; a second rack is arranged on one side of the scraper knife close to the first rack; a gear is arranged between the first rack and the second rack, the gear is rotationally connected with the thimble, and the gear is respectively meshed with the first rack and the second rack at corresponding positions; withstand the ice sheet and support the wire pole after running through the ice sheet through the traveller, later the thimble continues to slide under the top of wedge for a rack drives gear and No. two rack slides, and then makes the spiller stretch out and slide to the one side of keeping away from the thimble, and then carries out quick expansion and shovel to the ice sheet, increases the breakage of ice dirt and peels off efficiency, further increases the deicing efficiency of thimble.

Preferably, a water through hole penetrating through the sliding column is formed in the sliding column; the third hole penetrates through the thimble, a limiting ring is fixedly connected in the third hole, and one side of the limiting ring, which is close to the pressure spring, is fixedly connected with the pressure spring; a piston is connected in a sliding manner in a blind hole formed in the counterweight block, the pull rope is hollow, and one end of the pull rope, which is close to the piston, is communicated with the blind hole through a fourth hole; one end of the pull rope in the blind hole is sleeved with a return spring; a fifth hole communicated with the hollow part of the pull rope is formed in the wedge-shaped block and corresponds to the water through hole; when the balancing weight stops suddenly, the balancing weight slides downwards for a certain distance relative to the piston, so that compressed air generated in the blind hole sequentially passes through the fourth hole, the hollow pull rope, the fifth hole and the third hole and then is sprayed to the end part of the sliding column, and then the gap between the loosened ice layer and the telegraph pole is inflated, the expansion efficiency of the ice blocks in the gaps between the ice blocks and the telegraph pole is further increased, and the deicing efficiency of the ladder stand is increased.

Preferably, a group of butterfly bags are fixedly connected between the sliding seat and the locking ring and are communicated with the limber hole through an air pipe; strong brine is filled in the butterfly-shaped bag, and the volume of the strong brine is not more than one third of the volume of the butterfly-shaped bag; the sliding seat extrudes the butterfly-shaped bag, so that strong brine in the butterfly-shaped bag is sprayed out to the surface of the telegraph pole through the third hole, the crushing and melting efficiency of ice blocks between the locking ring and the sliding rod and between the sliding rod and the telegraph pole is further improved, the friction force between the locking ring and the telegraph pole is increased, and the frozen adhesion between the locking ring and the telegraph pole up to now is reduced.

Preferably, the middle part of each sawtooth is provided with a cutting seam, a spherical cavity formed at the bottom of each cutting seam is fixedly connected with an air bag, and the air bag is communicated with the top of the butterfly-shaped bag through a pipeline; compressed air at the top is filled into the gasbag through the pipeline when the butterfly-shaped bag is extruded for the gasbag inflation back extrusion spherical cavity, and then make the sawtooth take place elastic deformation ice female expansion cutting seam, further extrude the expansion breakage to the ice sheet of sawtooth both sides, increase the deicing efficiency of cat ladder.

The invention has the following beneficial effects:

1. according to the electric crawling ladder with the automatic falling lock structure, when the top of the crawling ladder is close to and contacts a wire pole, the sliding seat is extruded through the wire pole, the sliding seat slides into the first sliding hole, compressed air in the first sliding hole is filled into the through hole, the sliding rod is driven to extend out and surround the wire pole, automatic falling lock is conducted on the crawling ladder, the stability of the crawling ladder is further improved, the wire pole is tightly embraced by the sliding rod, the connection strength between the crawling ladder and the wire pole is improved, meanwhile when an operator climbs the crawling ladder, the crawling ladder applies higher pressure to the sliding seat, air pressure in the through hole is further increased, the embracing locking effect on the wire pole is further improved by the sliding rod, and personal safety and maintenance efficiency of an overhaul worker are guaranteed.

2. According to the electric crawling ladder with the automatic locking structure, the pull rope is pulled downwards through the pull ring to lift the balancing weight, then the pull ring is loosened to enable the balancing weight to fall freely, then the balancing weight drives the pull rope and the wedge block to move, when the wedge block moves to the position corresponding to the end of the thimble, the thimble is instantly extruded by the wedge block, meanwhile, the balancing weight stops suddenly, the impact force generated when the balancing weight stops suddenly is utilized to drive the thimble to slide and impact the ice layer on the telegraph pole, the crushing and falling efficiency of the ice layer is further increased, meanwhile, the thimble extrudes hydraulic oil when sliding in the sliding ring, the thimbles at other positions are ejected through hydraulic transmission, and the crushing efficiency of ice blocks on the periphery of the telegraph pole is further increased.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a top view of the present invention;

FIG. 5 is a partial enlarged view of FIG. 4 at C

FIG. 6 is a view from the direction B of FIG. 2;

in the figure: the device comprises a body 1, a locking ring 11, a rotating shaft 12, a hinged support 13, a first sliding hole 14, a sliding seat 15, a through hole 16, a sliding rod 17, a sawtooth 2, a roller 21, a winding roller 22, a conveying belt 23, a second sliding hole 24, a thimble 25, a pulley 26, a pull rope 27, a pull ring 28, a balancing weight 29, a wedge block 3, an annular groove 31, a sliding ring 32, a first hole 33, a sponge ring 34, a third hole 35, a sliding column 36, a pressure spring 37, a first rack 38, a sliding chute 39, a scraper knife 4, a second rack 41, a gear 42, a water through hole 43, a limiting ring 44, a blind hole 45, a piston 46, a fourth hole 47, a fifth hole 48, a butterfly-shaped bag 5, a cutting seam 51 and an air bag 52.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Example one

As shown in fig. 1 to 5, the electric ladder with an automatic locking structure of the invention comprises a body 1 and a semicircular locking ring 11; the top of the body 1 is hinged with a hinged support 13 through a rotating shaft 12, and the hinged support 13 is fixedly connected with a locking ring 11; a first sliding hole 14 is formed in the inner periphery of the locking ring 11, a T-shaped sliding seat 15 is connected in the first sliding hole 14 in a sliding manner, and one end, far away from the locking ring 11, of the sliding seat 15 is of an arc-shaped structure; a semicircular through hole 16 penetrating through the locking ring 11 is formed in the locking ring 11, a pair of arc-shaped sliding rods 17 are connected in the through hole 16 in a sliding mode, and a spring is fixedly connected between the two sliding rods 17; the first sliding hole 14 is communicated with the through hole 16; when the electric power rush-repair machine works, the crawling ladder is often used in the prior art, a telegraph pole and other electric equipment are climbed through the crawling ladder, and then the electric power rush-repair machine can quickly reach an operation position to perform electric power rush-repair operation, but in cold seasons or regions, the outdoor temperature is low, the freezing and rain weather phenomenon often occurs, meanwhile, snow or accumulated water on the road surface is repeatedly melted and frozen, so that serious threats are brought to the operation of the crawling ladder, the slippery ground and ice blocks adhered to the telegraph pole are difficult to provide enough friction force for stable support of the crawling ladder, so that the slipping accident occurs when an operator easily overhauls, and the personal safety of the maintainer is seriously threatened; at the moment, when the top of the ladder stand is close to and contacts with a wire pole, the wire pole extrudes the sliding seat 15, the sliding seat 15 slides into the first sliding hole 14, compressed air in the first sliding hole 14 is filled into the through hole 16, the sliding rod 17 is driven to extend out and surround the wire pole, the ladder stand is automatically locked, the stability of the ladder stand is further improved, the wire pole is tightly embraced by the sliding rod 17, the connection strength of the ladder stand and the wire pole is improved, meanwhile, when an operator climbs the ladder stand, the ladder stand applies higher pressure to the sliding seat 15, air pressure in the through hole 16 is further increased, the surrounding locking effect of the wire pole is further improved by the sliding rod 17, and the personal safety and the maintenance efficiency of the maintainer are guaranteed.

A group of cutting units are uniformly distributed on the arc inner periphery of the sliding rod 17, each cutting unit comprises a group of uniformly arranged saw teeth 2, and the saw teeth 2 do not interfere the free sliding of the sliding rod 17; the cutting unit is driven to continuously mark the ice layer on the periphery of the telegraph pole when the slide rod 17 extends out of the through hole 16, so that the saw teeth 2 cut and crush the ice layer, the ice layer is broken and then falls off from the telegraph pole, the clamping strength and the friction force between the slide rod 17 and the telegraph pole are further increased, and the influence of ice blocks on the stability of the ladder stand is reduced.

The width of the sawteeth 2 in each group of cutting units is sequentially increased from one side to the other side; the width of the saw teeth 2 at one side of the cutting unit close to the end part of the locking ring 11 is the minimum; the sawtooth 2 that is different through the width constantly scrapes and cuts the ice sheet for the ice sheet is expanded the extrusion by the sawtooth 2 of rear portion width broad after being cut, further increases the crack width on ice sheet, increases the efficiency that the ice sheet is broken and peels off.

One end of the sliding rod 17, which is far away from the sliding seat 15, is rotatably connected with a roller 21 through a rotating pin; a winding roller 22 is rotatably connected to the inner periphery of the locking ring 11 at a position close to the sliding seat 15, and a coil spring for resetting is fixedly connected in the winding roller 22; a conveyer belt 23 is wound on the winding roller 22, and the other end of the conveyer belt 23 is fixedly connected with the outer side of the locking ring 11 after bypassing the roller 21; the saw teeth 2 are fixedly connected to one side of the conveying belt 23 close to the center of the locking ring 11; the slide bar 17 drives the roller 21 to stretch the conveying belt 23 when sliding towards the outside of the through hole 16, so that the conveying belt 23 is led out from the winding roller 22 and then continuously moves towards the direction close to the end part of the slide bar 17, and simultaneously drives the saw teeth 2 to cut and break an ice layer in an accelerated manner, and simultaneously, the conveying belt 23 moving towards the end of the slide bar 17 rapidly transports broken ice blocks between the saw teeth 2 and the telegraph pole to the outside of the slide bar 17, thereby further reducing broken ice between the slide bar 17 and the locking ring 11 and the telegraph pole, increasing the locking effect and the friction force between the locking ring 11 and the telegraph pole, further ensuring the stability of the cat ladder body 1, simultaneously reducing the adhesion of the broken ice between the locking ring 11 and the telegraph pole and then freezing again, reducing the adhesion between the cat ladder and the telegraph pole, and increasing the dismantling efficiency of the cat ladder.

A group of second sliding holes 24 are uniformly distributed on the inner periphery of the locking ring 11, and ejector pins 25 are connected in the second sliding holes 24 in a sliding manner; a tension spring is fixedly connected between the thimble 25 and the bottom of the second sliding hole 24; the rotating shaft 12 is rotatably connected with a pulley 26, the pulley 26 is sleeved with a pull rope 27, one end of the pull rope 27 is fixedly connected with a pull ring 28, and the other end of the pull rope 27 is connected with a balancing weight 29; one side of the pull rope 27 close to the pull ring 28 is fixedly connected with the wedge-shaped block 3, and the thimble 25 on the locking ring 11, which is at the position corresponding to the wedge-shaped block 3, penetrates through the second slide hole 24 at the corresponding position and then props against the wedge-shaped block 3; an annular groove 31 is formed in the position, located in the second sliding hole 24, of the thimble 25, a sliding ring 32 is fixedly connected with the position, corresponding to the annular groove 31, in the second sliding hole 24, and the sliding ring 32 is connected with the annular groove 31 in a sliding and sealing mode; the annular grooves 31 on the sides of the sliding rings 32 and 32 far away from the axis of the locking ring 11 are filled with hydraulic oil, and the hydraulic oil is communicated with the bottoms of the second sliding holes 24 through the first holes 33; pull rope 27 downwards through pull ring 28 and promote balancing weight 29, later loosen pull ring 28, make balancing weight 29 free fall, later balancing weight 29 drives stay rope 27 and wedge 3 motion, move to thimble 25 tip when wedge 3 corresponds the position, wedge 3 extrudes thimble 25 in the twinkling of an eye, balancing weight 29 stops suddenly simultaneously, the impact force when utilizing balancing weight 29 to stop suddenly drives thimble 25 and slides and strike the ice sheet on the wire pole, further increase the breakage and the drop efficiency on ice sheet, thimble 25 extrudes hydraulic oil when sliding in sliding ring 32 simultaneously, thimble 25 through the ejecting other positions of hydraulic transmission, further increase the crushing efficiency of wire pole periphery ice-cube.

An annular sealing groove is formed in the slip ring 32, an annular sponge ring 34 is fixedly connected in the sealing groove, and strong brine is soaked in the sponge ring 34; the sponge ring 34 is matched with the concentrated saline water to lubricate the thimble 25, so that the moisture on the upper part of the telegraph pole is prevented from permeating into the second sliding hole 24 and freezing, the thimble 25 is prevented from sliding smoothly, and the deicing efficiency of the thimble 25 is further ensured.

A third hole 35 is formed in one end, close to the needle point, of the thimble 25, a sliding column 36 is connected in the third hole 35 in a sliding mode, a pressure spring 37 is connected between the sliding column 36 and the bottom of the third hole 35, and a first rack 38 is fixedly connected in grooves formed in two sides of the sliding column 36; one end of the thimble 25 close to the needle point is symmetrically provided with a pair of arc-shaped sliding chutes 39, and the sliding chutes 39 are connected with the elastic scraper knife 4 in a sliding way; a second rack 41 is arranged on one side of the scraper knife 4 close to the first rack 38; a gear 42 is arranged between the first rack 38 and the second rack 41, the gear 42 is rotatably connected with the thimble 25, and the gear 42 is respectively meshed with the first rack 38 and the second rack 41 at corresponding positions; prop against the ice sheet and support the wire pole after running through the ice sheet through traveller 36, later thimble 25 continues to slide under the top of wedge 3 for a rack 38 drives gear 42 and No. two racks 41 and slides, and then makes scraper knife 4 stretch out and slide to the one side of keeping away from thimble 25, and then carries out quick expansion and shovel to the ice sheet, increases the breakage of ice dirt and peels off efficiency, further increases thimble 25's deicing efficiency.

A water through hole 43 penetrating through the sliding column 36 is formed in the sliding column 36; the third hole 35 penetrates through the thimble 25, a limit ring 44 is fixedly connected in the third hole 35, and one side of the limit ring 44, which is close to the pressure spring 37, is fixedly connected with the pressure spring 37; a piston 46 is connected in a sliding manner in a blind hole 45 formed in the counterweight block 29, the pull rope 27 is hollow, and one end of the pull rope 27 close to the piston 46 is communicated with the blind hole 45 through a fourth hole 47; one end of the pull rope 27, which is positioned in the blind hole 45, is sleeved with a return spring; a fifth hole 48 communicated with the hollow part of the pull rope 27 is formed in the wedge-shaped block 3 corresponding to the water through hole 43; when the balancing weight 29 suddenly stops, the balancing weight 29 slides downwards for a certain distance relative to the piston 46, so that compressed air generated in the blind hole 45 sequentially passes through the fourth hole 47, the hollow pull rope 27, the fifth hole 48 and the third hole 35 and then is sprayed to the end part of the sliding column 36, a gap between a loosened ice layer and a telegraph pole is inflated, the expansion efficiency of the expansion and crushing of ice blocks and the expansion efficiency of the gap between the ice blocks and the telegraph pole are further increased, and the deicing efficiency of the ladder stand is increased.

A group of butterfly bags 5 are fixedly connected between the sliding seat 15 and the locking ring 11, and the butterfly bags 5 are communicated with the water through holes 43 through air pipes; strong brine is filled in the butterfly-shaped bag 5, and the volume of the strong brine is not more than one third of the volume of the butterfly-shaped bag 5; the sliding seat 15 extrudes the butterfly-shaped bag 5, so that the strong brine in the butterfly-shaped bag 5 is sprayed out to the surface of the telegraph pole through the third hole 35, the crushing and melting efficiency of ice blocks between the locking ring 11 and the sliding rod 17 and the telegraph pole is further improved, the friction force between the locking ring 11 and the telegraph pole is increased, and the freezing adhesion between the locking ring 11 and the telegraph pole to date is reduced.

Example two

As shown in fig. 6, a first comparative example, in which another embodiment of the present invention is: the middle part of the sawtooth 2 is provided with a cutting seam 51, a spherical cavity formed at the bottom of the cutting seam 51 is fixedly connected with an air bag 52, and the air bag 52 is communicated with the top of the butterfly-shaped bag 5 through a pipeline; compressed air at the top is filled into the air bag 52 through the pipeline when the butterfly-shaped bag 5 is extruded, so that the air bag 52 is extruded into a spherical cavity after being expanded, the saw teeth 2 are elastically deformed to expand the cutting seams 51, the ice layers on the two sides of the saw teeth 2 are further extruded, expanded and crushed, and the deicing efficiency of the ladder stand is increased.

When the climbing ladder works, when the top of the climbing ladder is close to and contacts a wire pole, the wire pole extrudes the sliding seat 15, the sliding seat 15 slides into the first sliding hole 14, compressed air in the first sliding hole 14 is filled into the through hole 16, the sliding rod 17 is driven to extend out and encircle the wire pole, the climbing ladder is automatically locked, the stability of the climbing ladder is further improved, the wire pole is tightly held by the sliding rod 17, the connection strength between the climbing ladder and the wire pole is improved, meanwhile, when an operator climbs the climbing ladder, the climbing ladder applies higher pressure to the sliding seat 15, the air pressure in the through hole 16 is further increased, the encircling locking effect of the wire pole is further improved by the sliding rod 17, and the personal safety and the overhauling efficiency of an overhauling person are ensured; when the sliding rod 17 extends out of the through hole 16, the cutting unit is driven to continuously scratch the ice layer on the periphery of the telegraph pole, so that the sawtooth 2 cuts and crushes the ice layer, the ice layer falls off from the telegraph pole after being crushed, the clamping strength and the friction force between the sliding rod 17 and the telegraph pole are further increased, and the influence of ice blocks on the stability of the ladder stand is reduced; the sawteeth 2 with different widths continuously scrape and cut the ice layer, so that the ice layer is expanded and extruded by the sawteeth 2 with wider rear width after being cut, the crack width of the ice layer is further increased, and the crushing and stripping efficiency of the ice layer is increased; the roller 21 is driven to stretch the conveying belt 23 when the sliding rod 17 slides to the outside of the through hole 16, so that the conveying belt 23 is led out from the winding roller 22 and then continuously moves towards the direction close to the end part of the sliding rod 17, the saw teeth 2 are driven to cut and break an ice layer in an accelerated manner, meanwhile, the conveying belt 23 moving towards the end of the sliding rod 17 quickly conveys broken ice blocks between the saw teeth 2 and a telegraph pole out of the sliding rod 17, broken ice between the sliding rod 17 and the locking ring 11 and the telegraph pole is further reduced, the locking effect and the friction force between the locking ring 11 and the telegraph pole are increased, the stability of the cat ladder body 1 is further ensured, meanwhile, the broken ice blocks are reduced to be frozen again after being adhered between the locking ring 11 and the telegraph pole, the adhesion between the cat ladder and the telegraph pole is reduced, and the dismantling efficiency of the cat ladder is increased; pulling a pull rope 27 downwards through a pull ring 28 and lifting a balancing weight 29, then loosening the pull ring 28 to enable the balancing weight 29 to fall freely, then driving the pull rope 27 and the wedge-shaped block 3 to move through the balancing weight 29, when the wedge-shaped block 3 moves to a position corresponding to the end part of the thimble 25, instantly extruding the thimble 25 through the wedge-shaped block 3, simultaneously stopping the balancing weight 29 suddenly, driving the thimble 25 to slide and impact an ice layer on the telegraph pole by utilizing impact force generated when the balancing weight 29 stops suddenly, further increasing the crushing and falling efficiency of the ice layer, simultaneously extruding hydraulic oil when the thimble 25 slides in a sliding ring 32, and ejecting the thimbles 25 at other positions through hydraulic transmission, thereby further increasing the crushing efficiency of ice blocks on the periphery of the telegraph pole; the sponge ring 34 is matched with the concentrated saline water to lubricate the thimble 25, so that the moisture on the upper part of the telegraph pole is reduced from permeating into the second slide hole 24 and freezing, the thimble 25 is prevented from sliding smoothly, and the deicing efficiency of the thimble 25 is further ensured; the slide post 36 props against the ice layer and props against the telegraph pole after penetrating through the ice layer, then the thimble 25 continues to slide under the propping action of the wedge-shaped block 3, so that the first rack 38 drives the gear 42 and the second rack 41 to slide, and further the scraper knife 4 slides to one side far away from the thimble 25 after extending out, so that the ice layer is rapidly expanded and shoveled, the crushing and stripping efficiency of ice dust is increased, and the deicing efficiency of the thimble 25 is further increased; when the counterweight block 29 suddenly stops, the counterweight block 29 slides downwards for a certain distance relative to the piston 46, so that compressed air generated in the blind hole 45 sequentially passes through the fourth hole 47, the hollow pull rope 27, the fifth hole 48 and the third hole 35 and then is sprayed to the end part of the sliding column 36, a gap between a loosened ice layer and a telegraph pole is inflated, the expansion and crushing efficiency of ice blocks and the expansion efficiency of gaps between the ice blocks and the telegraph pole are further improved, and the deicing efficiency of the ladder stand is improved; the sliding seat 15 extrudes the butterfly-shaped bag 5, so that the strong brine in the butterfly-shaped bag 5 is sprayed out to the surface of the telegraph pole through the third hole 35, the crushing and melting efficiency of ice blocks between the locking ring 11 and the sliding rod 17 and the telegraph pole is further improved, the friction force between the locking ring 11 and the telegraph pole is increased, and the freezing adhesion between the locking ring 11 and the telegraph pole to date is reduced.

The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.