CN220667436U - Crawling ladder for transformer maintenance - Google Patents

Abstract

The utility model discloses a ladder stand for transformer maintenance, which relates to the technical field of transformers and comprises a telegraph pole, wherein a transformer body is fixedly connected to the telegraph pole, the surface of the telegraph pole is fixedly connected with the ladder stand, one side of the transformer body is provided with a maintenance platform, two first notches are formed in the ladder stand, first movable columns are slidably connected inside the two first notches, extension springs are fixedly connected inside the two first notches, ladder beams are fixedly connected to one side, opposite to the two first movable columns, of the ladder stand, fixing blocks are fixedly connected to one side, opposite to the two fixing blocks, of the four bayonets are formed in one side, of the first movable columns, clamping blocks are slidably connected to one side of the first movable columns, and fixing mechanisms are arranged inside the ladder beams. This transformer maintenance is with cat ladder, when needs maintain the transformer, downward pulling ladder beam stretches into two bayonet sockets inside respectively through fixed establishment and fixes, and the staff can maintain the transformer body this moment.

Description

Crawling ladder for transformer maintenance

Technical Field

The utility model relates to the technical field of transformers, in particular to a crawling ladder for transformer maintenance.

Background

The transformer is important power equipment in the electric wire netting, especially high-voltage class transformer, in order to guarantee its operation safety, must detect it at intervals, but when demolishing the high-voltage bushing lead wire connection test line of large-scale transformer, because the staff need bare-handed climbing on the pure porcelain bushing of the slope height more than about three meters, need step on the sleeve porcelain skirt and work in the climbing process, because of the limited stressed area under the foot, this very big potential safety hazard and working strength have been brought for the staff.

At present, most of the transformer maintenance ladders are directly fixedly connected to a telegraph pole during installation, the bottom of each ladder is very close to the ground, the ladders cannot stretch out and draw back when the transformer does not need to be maintained, children or non-professional staff can climb to the maintenance platform to touch the transformer through the ladders in a non-maintenance time period, and a certain risk can be generated, so that the transformer maintenance ladder is provided for solving the problems.

Disclosure of Invention

The utility model aims to at least solve one of the technical problems in the prior art, and provides a ladder for transformer maintenance, which can solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a transformer maintenance is with cat ladder, includes the wire pole, fixedly connected with transformer body on the wire pole, fixedly connected with cat ladder on the surface of wire pole, transformer body one side is provided with maintenance platform, two first notch have been seted up on the cat ladder, the inside equal sliding connection of two first notch has first removal post, the inside fixedly connected with extension spring of two first notch, the one end and the first removal post one end fixed connection of extension spring and first notch contact, the one side fixedly connected with ladder beam that two first removal posts are relative, one side fixedly connected with fixed block that the cat ladder is on the back of the body mutually, four bayonet sockets have been seted up to one side that two fixed blocks are relative, one side sliding connection of first removal post has the fixture block, the one end that the fixture block is on the back of the body mutually is at the inside sliding connection of bayonet socket respectively, the inside fixed establishment that is provided with of ladder beam.

Preferably, the fixing mechanism comprises a button, the button is in sliding connection with one side of the ladder beam, one end of the button extends to the inside of the ladder beam, one end of the button extending to the inside of the ladder beam is fixedly connected with a first movable block, a first elastic spring is movably sleeved on the button, two second movable blocks are in sliding connection with the inside of the ladder beam, and one side of each second movable block and a clamping block extend to one end of the inside of the ladder beam to be fixedly connected.

Preferably, one end of the first elastic spring is fixedly connected to one side of the first moving block, and the other end of the first elastic spring is fixedly connected to the inside of the ladder beam.

Preferably, the two clamping blocks are movably sleeved with second elastic springs, one ends of the two second elastic springs, which are opposite, are fixedly connected to one side of the second moving block, and the opposite ends of the two second elastic springs are fixedly connected to the inside of the first moving column.

Preferably, the first moving block is in a V shape, the two second moving blocks are all in an L shape, one end of the L shape is in an inclined shape, and the inclined surfaces of the two second moving blocks at one end of the L shape are mutually matched with the V-shaped inclined surfaces of the first moving block.

Preferably, the surface of the maintenance platform is paved with an anti-slip pad.

Preferably, the top of the maintenance platform is provided with a guardrail, and one side of the guardrail is in an opening shape.

Preferably, a second notch is formed in the first notch, a second moving column is slidably connected in the second notch, and one side of the second moving column is fixedly connected with one side of the first moving column.

Compared with the prior art, the utility model has the beneficial effects that:

(1) This cat ladder is used in transformer maintenance when needs maintain the transformer, firstly, shift out two fixture blocks from inside two bayonet sockets in top through fixed establishment, then the ladder beam of downward pulling, the ladder beam drives two first removal posts and moves down along two first notch inner walls respectively, two extension spring atress are tensile, when two fixture blocks are relative with two bayonet sockets in bottom, it is inside accomplish fixedly to stretch into two fixture blocks respectively through fixed establishment, staff's accessible ladder beam and cat ladder climb to the maintenance platform surface and maintain the transformer body this moment, it is inside shift out two fixture blocks in bottom from two bayonet sockets through fixed establishment after the maintenance is accomplished, extension spring relies on self elasticity to reset, drive first removal post and ladder beam and reset, avoid non-professional to climb to the maintenance platform through the cat ladder, cause the electric shock injury.

(2) This cat ladder is maintained with transformer, when two fixture blocks and two bayonet sockets positions in bottom are relative, loosen the button, first elastic spring resets and drives first movable block and reset, no longer exert pressure to two second movable blocks after the first movable block resets, two second elastic springs rely on self elasticity to reset, drive two second movable blocks and two fixture blocks respectively and reset, two fixture blocks insert inside two bayonet sockets in bottom, can accomplish the fixed to the ladder beam position this moment, staff accessible ladder beam upwards climbs.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

fig. 1 is a schematic structural view of a ladder stand for transformer maintenance according to the present utility model;

FIG. 2 is a schematic view of the inside of the ladder of the present utility model;

FIG. 3 is an enlarged schematic view of the utility model at A in FIG. 2;

FIG. 4 is a schematic view of the interior of a ladder beam of the present utility model;

fig. 5 is an enlarged schematic view of fig. 4 at B in accordance with the present utility model.

Reference numerals: 1. a pole; 2. a transformer body; 3. a ladder stand; 4. maintaining a platform; 5. guard bars; 6. a first notch; 7. a first moving column; 8. ladder beams; 9. a fixed block; 10. a bayonet; 11. a clamping block; 12. a button; 13. a first moving block; 14. a first elastic spring; 15. a second moving block; 16. a second elastic spring; 17. a second notch; 18. a second moving column; 19. and (5) stretching the spring.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

Referring to fig. 1-5, the present utility model provides a technical solution: the utility model provides a transformer maintenance is with cat ladder, including wire pole 1, fixedly connected with transformer body 2 on the wire pole 1, fixedly connected with cat ladder 3 on the surface of wire pole 1, transformer body 2 one side is provided with maintenance platform 4, two first notch 6 have been seted up on the cat ladder 3, the inside all sliding connection of two first notch 6 has first movable column 7, the inside fixedly connected with extension spring 19 of two first notch 6, the one end that extension spring 19 did not contact with first notch 6 and the one end fixedly connected with of first movable column 7, the opposite one side fixedly connected with ladder beam 8 of two first movable column 7, the opposite one side fixedly connected with fixed block 9 of cat ladder 3, four bayonet sockets 10 have been seted up to the opposite one side of two fixed blocks 9, first movable column 7 one side sliding connection has fixture block 11, the inside sliding connection of bayonet socket 10 is respectively to the one end that fixture block 11 is on the back, ladder beam 8 inside is provided with fixed establishment;

when needing to maintain the transformer, firstly, shift out two fixture blocks 11 from the inside of two bayonet sockets 10 in top through fixed establishment, then pull ladder beam 8 downwards, ladder beam 8 drives two first removal post 7 respectively along two first notch 6 inner walls downwardly moving, two extension spring 19 atress are tensile, when two fixture blocks 11 are relative with two bayonet sockets 10 in bottom, it is fixed to stretch into two fixture blocks 11 respectively to the inside completion of two bayonet sockets 10 through fixed establishment, staff's accessible ladder beam 8 and cat ladder 3 climb to maintenance platform 4 surface and maintain transformer body 2 at this moment, it is followed two bayonet sockets 10 inside through fixed establishment with two fixture blocks 11 in bottom after the maintenance is accomplished to shift out, extension spring 19 relies on self elasticity to reset, drive first removal post 7 and ladder beam 8 to reset, avoid non-professional to climb to maintenance platform 4 through cat ladder 3, cause the electric shock injury.

The fixing mechanism comprises a button 12, the button 12 is slidably connected at one side of the ladder beam 8, one end of the button 12 extends into the ladder beam 8, one end of the button 12 extending into the ladder beam 8 is fixedly connected with a first movable block 13, a first elastic spring 14 is movably sleeved on the button 12, one end of the first elastic spring 14 is fixedly connected at one side of the first movable block 13, the other end of the first elastic spring 14 is fixedly connected inside the ladder beam 8, two second movable blocks 15 are slidably connected inside the ladder beam 8, one side of each second movable block 15 is fixedly connected with one end of each clamping block 11 extending into the ladder beam 8, two opposite ends of each second elastic spring 16 are fixedly connected at one side of each second movable block 15, and opposite ends of each second elastic spring 16 are fixedly connected inside the first movable column 7;

the first moving block 13 is in a V shape, the two second moving blocks 15 are both in an L shape, one end of the L shape is in an inclined shape, and the inclined surface of one end of the L shape of the two second moving blocks 15 is matched with the V-shaped inclined surface of the first moving block 13;

when the ladder beam 8 needs to be pulled downwards, a specific tool is used firstly, the button 12 is pressed downwards, the button 12 moves downwards, the button 12 drives the first moving block 13 to move downwards, the first elastic spring 14 is stressed and stretched, when the inclined plane of the V-shaped first moving block 13 contacts the inclined plane of the L-shaped one end of the two second moving blocks 15, the inclined plane of the L-shaped one end of the two second moving blocks 15 is subjected to the extrusion force of the inclined plane of the V-shaped first moving block 13 to perform relative movement, the second elastic spring 16 is stressed and stretched, the two second moving blocks 15 respectively drive the two clamping blocks 11 to perform relative movement, the two clamping blocks 11 respectively move out of the two clamping blocks 10 and retract into the first moving column 7, the ladder beam 8 can be moved downwards at the moment, when the two clamping blocks 11 are opposite to the positions of the two clamping blocks 10 at the bottom, the button 12 is released, the first elastic spring 14 resets to drive the first moving block 13 to reset, the two second moving blocks 15 are not stressed any more after the first moving block 13 resets, the two second elastic springs 16 rely on self elastic reset to drive the two clamping blocks to perform relative movement, the two clamping blocks 11 can be inserted into the two clamping blocks 11 to the positions of the two clamping blocks to be inserted into the two clamping blocks 8, and the two clamping blocks can be inserted into the two clamping blocks to the positions of the two clamping blocks to be fixed by the position of the two clamping blocks 8.

The anti-skid pad is laid on the surface of the maintenance platform 4, and is made of an insulating material, so that the safety of workers in the maintenance process is improved, and the occurrence of slipping and electric shock accidents is avoided;

the top of the maintenance platform 4 is provided with the guardrail 5, one side of the guardrail 5 is in an opening shape, so that a worker can conveniently maintain the transformer body 2, and the rest sides of the worker are protected by the guardrail 5, so that the risk of falling of the worker is further avoided;

a second notch 17 is formed in the first notch 6, a second moving column 18 is connected in the second notch 17 in a sliding manner, and one side of the second moving column 18 is fixedly connected with one side of the first moving column 7;

when the first movable column 7 moves, the second movable column 18 slides in the second notch 17, so that the situation that after the two clamping blocks 11 are separated from the two bayonets 10 is avoided, the first movable column 7 and the fixed block 9 lose connection, the first movable column 7 slides down, injury to operators is prevented, the second movable column 18 is limited by the second notch 17, the accuracy of the relative positions of the two clamping blocks 11 and the two bayonets 10 is improved, and further the working efficiency is improved.

Working principle: when the transformer needs to be maintained, a specific tool is firstly used for downwards pressing the button 12, the button 12 downwards moves, the button 12 drives the first moving block 13 to downwards move, the first elastic spring 14 is stressed and stretched, when the inclined plane of the V-shaped first moving block 13 contacts the inclined planes of the L-shaped ends of the two second moving blocks 15, the inclined planes of the L-shaped ends of the two second moving blocks 15 are subjected to the extrusion force of the inclined plane of the V-shaped first moving block 13 to relatively move, the second elastic spring 16 is stressed and stretched, the two second moving blocks 15 respectively drive the two clamping blocks 11 to relatively move, the two clamping blocks 11 respectively move out of the two bayonets 10 and retract into the first moving column 7, and the ladder beam 8 can be downwards moved at the moment, when two fixture blocks 11 are opposite to the two bayonets 10 at the bottom, the button 12 is loosened, the first elastic spring 14 resets to drive the first movable block 13 to reset, the first movable block 13 no longer applies pressure to the two second movable blocks 15 after reset, the two second elastic springs 16 reset by self elasticity to respectively drive the two second movable blocks 15 and the two fixture blocks 11 to reset, the two fixture blocks 11 are inserted into the two bottom bayonets 10, the fixing of the position of the ladder beam 8 can be completed at this time, a worker can climb up to the surface of the maintenance platform 4 through the ladder beam 8 to maintain the transformer body 2, the two bottom fixture blocks 11 are moved out of the two bayonets 10 through the fixing mechanism after maintenance is completed, and the extension spring 19 resets by self elasticity to drive the first movable column 7 and the ladder beam 8 to reset.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (8)

1. The utility model provides a transformer maintenance is with cat ladder, includes wire pole (1), its characterized in that: the utility model discloses a transformer body (2) is fixedly connected with on wire pole (1), fixedly connected with cat ladder (3) on the surface of wire pole (1), transformer body (2) one side is provided with maintenance platform (4), two first notch (6) have been seted up on cat ladder (3), inside all sliding connection of two first notch (6) has first removal post (7), inside fixedly connected with extension spring (19) of two first notch (6), the one end that extension spring (19) did not contact with first notch (6) and first removal post (7) one end fixed connection, one side fixedly connected with ladder beam (8) that two first removal posts (7) are relative, one side fixedly connected with fixed block (9) that cat ladder (3) are carried on the back, four bayonet sockets (10) have been seted up to one side that two fixed blocks (9) are relative, one side sliding connection of first removal post (7) has fixture block (11), the one end that fixture block (11) are carried on the back is at bayonet socket (10) inside sliding connection respectively, inside ladder beam (8) is provided with fixed establishment.

2. The transformer maintenance ladder according to claim 1, wherein: the fixing mechanism comprises a button (12), the button (12) is connected with one side of the ladder beam (8) in a sliding mode, one end of the button (12) extends to the inside of the ladder beam (8) and is fixedly connected with a first moving block (13), a first elastic spring (14) is movably sleeved on the button (12), two second moving blocks (15) are connected with one side of the ladder beam (8) in a sliding mode, and one end of each second moving block (15) extends to the inside of the ladder beam (8) with a clamping block (11) in a fixed mode.

3. The transformer maintenance ladder according to claim 2, wherein: one end of the first elastic spring (14) is fixedly connected to one side of the first moving block (13), and the other end of the first elastic spring (14) is fixedly connected to the inside of the ladder beam (8).

4. A transformer maintenance ladder according to claim 3, wherein: the two clamping blocks (11) are movably sleeved with second elastic springs (16), one ends of the two second elastic springs (16) which are opposite are fixedly connected to one side of the second moving block (15), and one ends of the two second elastic springs (16) which are opposite are fixedly connected to the inside of the first moving column (7).

5. The transformer maintenance ladder according to claim 4, wherein: the first moving block (13) is in a V shape, the two second moving blocks (15) are all in an L shape, one end of the L shape is in an inclined shape, and the inclined surfaces of the one ends of the two second moving blocks (15) in the L shape are mutually matched with the V-shaped inclined surfaces of the first moving block (13).

6. The transformer maintenance ladder according to claim 5, wherein: and an anti-slip pad is laid on the surface of the maintenance platform (4).

7. The transformer maintenance ladder according to claim 6, wherein: the top of maintenance platform (4) is provided with guardrail (5), and guardrail (5) one side is the opening form.

8. The transformer maintenance ladder of claim 7, wherein: the inside of first notch (6) has seted up second notch (17), and second notch (17) inside sliding connection has second removal post (18), and second removal post (18) one side and first removal post (7) one side fixed connection.