CN214196159U

CN214196159U - Flexible cat ladder of counter weight formula of limit railing is faced in high altitude of strideing across safely

Info

Publication number: CN214196159U
Application number: CN202021654681.0U
Authority: CN
Inventors: 李俊; 任文俊; 谭云龙; 郑涛; 翁晨阳; 曹艳芳; 姚宇; 单明超
Original assignee: Shanghai Nuclear Engineering Research and Design Institute Co Ltd; Shandong Nuclear Power Co Ltd
Current assignee: Shanghai Nuclear Engineering Research and Design Institute Co Ltd; Shandong Nuclear Power Co Ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-09-14
Anticipated expiration: 2030-08-11

Abstract

The utility model discloses a stride across flexible cat ladder of counter weight formula that limit railing is faced in high altitude safely, a serial communication port, include the support main part of constituteing by square tubular column and square tubular beam, the upper end of supporting the main part is equipped with the pulley yoke, is equipped with the pulley on the pulley yoke, is equipped with the recess that can restrict the ladder in the side of square tubular column, is equipped with in square tubular column inside and pulls the weight, and the top and the pulley yoke of square tubular column are connected, and the bottom is equipped with the shutoff board that can restrict and pull the weight, the ladder pass through wire rope with pull the weight and be connected and pass the pulley. The utility model discloses a core component is the flexible cat ladder of counter weight formula, has eliminated conventional cat ladder and has waited the limit in the high altitude and need other people to assist or arrange the not enough drawback in space, has improved and has used convenience, security, the utility model has the characteristics of the limit railing is waited in the convenient strideing across of one-man operation safety.

Description

Flexible cat ladder of counter weight formula of limit railing is faced in high altitude of strideing across safely

Technical Field

The utility model relates to a stride across high altitude safely and face flexible cat ladder of counter weight formula of limit railing belongs to the electrical equipment field.

Background

The counterweight type telescopic ladder stand is safe and convenient to cross over a climbing device between a newly-increased annular corridor of a railing and an annular crane boarding platform. The ring crane is a double-beam electric bridge crane with a main hoisting mechanism, an auxiliary hoisting mechanism and a running trolley, runs on an annular track in the reactor plant and is used for hoisting and transporting various devices during shutdown of the reactor plant. In a passive nuclear power plant, the ring crane has only one boarding gate, and the boarding platform of the ring crane can be reached only through one platform (see fig. 1). Under specific working conditions, the maintainer cannot reach the ring crane for troubleshooting:

(1) when the ring crane boarding platform is staggered with the boarding gate, the cart fails and cannot move;

(2) the ring crane boarding platform and the boarding gate are staggered, when the ring crane lifting mechanism lifts equipment, the lifting mechanism fails to move, and the ring crane cart cannot move due to interference of equipment below.

In order to solve the problem that the ring crane maintenance is inaccessible under the working conditions, as shown in fig. 2, a ring crane cab 21 is connected with a ring crane body boarding platform 22, and is connected with the ring crane body boarding platform 22 through a newly-added boarding platform 23 to form a boarding channel between an annular corridor and the ring crane. The addition of the annular corridor solves the problem that the annular crane maintenance is inaccessible, but in the process of loading platforms by the upper annular crane and the lower annular crane, the railings of the annular corridor need to be crossed. Conventionally, a straight ladder is hung on a railing or an inclined ladder or a ladder is adopted to cross the railing and is put on the ring to hang the boarding platform, the boarding platform can be operated by one person when the boarding platform is carried out in the mode, but when the boarding platform is hung from the ring to the ring corridor, people are required to assist in setting up the ladder or the step, inconvenience is caused when emergency evacuation is carried out, and therefore, how to set the extension ladder 26 connecting the newly-added straight ladder 24 and the ring hanging emergency platform 25 under the newly-added boarding platform 23 is particularly critical.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: how to realize that a single person safely and conveniently goes up and down between the annular corridor and the annular suspended boarding platform.

In order to solve the technical problem, the technical scheme of the utility model a safe flexible cat ladder of counter weight formula that stridees across high altitude and face limit railing is provided, a serial communication port, include the support main part of compriseing square tubular column and square tubular beam, the upper end of supporting the main part is equipped with the pulley yoke, is equipped with the pulley on the pulley yoke, is equipped with the slide recess that can restrict the ladder in the side of square tubular column, is equipped with in square tubular column inside and pulls the weight, and square tubular column's top is connected with the pulley yoke, and the bottom is equipped with the shutoff board that can restrict and pull the weight, the ladder pass through wire rope with pull the weight and be connected and pass the pulley.

Preferably, the upper end of the square tube upright post is fixed with the pulley yoke through a bolt.

Preferably, the support main body is welded with a platform component to be reached through a connecting square pipe and a connecting plate to form a stable support structure.

Preferably, the pulley yoke fixes the pulley with the retainer ring through a shaft, a shaft sleeve and a bearing, one end of the steel wire rope is connected with the ladder, and the other end of the steel wire rope is connected with the traction heavy hammer.

Preferably, square tubular column and ladder all be equipped with stop device, guarantee the safety of ladder in the lift process.

Preferably, iron blocks fixedly connected with the steel wire rope are arranged in the upright columns on the two sides of the ladder.

The utility model discloses a core component is the flexible cat ladder of counter weight formula, has eliminated conventional cat ladder and has waited the limit in the high altitude and need other people to assist or arrange the not enough drawback in space, has improved and has used convenience, security, the utility model has the characteristics of the limit railing is waited in the convenient strideing across of one-man operation safety.

Drawings

FIG. 1 is a schematic structural diagram of a ring-shaped crane boarding platform cloth of the original design;

fig. 2 is a schematic structural diagram of a newly added corridor platform;

FIG. 3 is a schematic structural view of the present invention;

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

FIG. 5 is a schematic view of the ladder of the present invention;

fig. 6 is a schematic structural view of the roller skate of the present invention.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

As shown in fig. 3 and 4, the counterweight type telescopic ladder for safely crossing over the overhead side rail is characterized by comprising a support main body consisting of a square tube upright post 1 and a square tube cross beam 6, wherein the upper end of the support main body is provided with a pulley block frame 9, a pulley 10 is arranged on the pulley frame 9, a ladder 3 and a traction heavy hammer 15 are connected through a steel wire rope 16 and penetrate through the pulley 10, the square tube cross beam 6 is welded at the lower end of the square tube upright post 1 to form the support main body, and the support main body is welded with a platform component to be reached through a connecting square tube 4 and a connecting plate 5 to form a stable support structure; the slideway groove 2 is vertically welded on the side surface of the square tube upright post 1 to limit the lifting path of the ladder.

The pulley yoke 9 is arranged on the upper end of the square tube upright post 1 except the bolt 7; the bottom end is blocked by a blocking plate 19 to limit the falling limit position of the traction heavy hammer 15, a cushion pad 18 is laid on the steel plate 19 to relieve the impact of the falling of the traction heavy hammer 15 on the blocking plate 19, and a bending part of the pulley frame 9 is inserted into the upper end of the square tube upright post 1 and is fixed by a bolt 7 and a gasket 8; the pulley 10 is installed on the pulley frame 9 through a shaft 11, a shaft sleeve 12 and a bearing 13, check rings 14 are installed at two ends of the shaft 11 to limit the displacement of the shaft 11, a limiting square pipe is welded at the upper end of the ladder 3, and the ladder 3 is limited to continue descending when meeting a square pipe cross beam 6 in the descending process; and iron blocks are welded in square tube upright posts on two sides of the ladder 3 to install a steel wire rope 16, and the other end of the steel wire rope 16 is fixed on a traction heavy hammer 15 through a lifting eye screw 17. The traction weight 15 is arranged in the square tube upright post 1, the ladder 3 is arranged in the groove 2 of the slideway, and the steel wire rope is arranged in the groove 10 of the pulley.

When a person climbs the ladder, the ladder 3 is pulled down with force, after the person climbs the ladder 3, the weight of the person and the ladder 3 is larger than that of the traction counter weight 15, the ladder 3 is not moved, and the person steps on the ladder; when a person gets on the platform and the foot leaves the ladder, the weight of the traction weight 15 is larger than that of the ladder 3, and the ladder 3 is pulled up to the newly added platform. When a person gets off the ladder, the ladder is pressed down with force, and after the person steps on the ladder 3, the weight of the person and the ladder 3 is larger than that of the traction counter weight 15, and the ladder 3 is not moved; when the person steps down and leaves the ladder, the weight of the traction weight 15 is larger than that of the ladder 3, and the ladder 3 is pulled up to the newly added platform.

Claims

1. The utility model provides a flexible cat ladder of counter weight formula of high altitude that faces limit railing safely stridees across, a serial communication port, include the support main part of constituteing by square tube stand (1) and square tube crossbeam (6), the upper end of supporting the main part is equipped with pulley yoke (9), be equipped with pulley (10) on pulley yoke (9), be equipped with slide groove (2) that can restrict ladder (3) in the side of square tube stand (1), be equipped with in square tube stand (1) inside and pull weight (15), the top and the pulley yoke (9) of square tube stand (1) are connected, the bottom is equipped with can restrict and pulls blocking plate (19) of weight (15), ladder (3) with pull weight (15) and be connected through wire rope (16) and pass pulley (10).

2. The weight type telescopic ladder for safely crossing the high-altitude adjacent side rail as claimed in claim 1, wherein the upper end of the square tube upright post (1) is fixed with a pulley yoke (9) through a bolt (7).

3. A telescopic ladder with counterweights for safely crossing high-altitude side railings according to claim 1, characterized in that the support body is welded with the platform members to be reached through the connecting square pipes (4) and the connecting plates (5) to form a stable support structure.

4. A telescopic ladder with counterweights for safely crossing overhead side rails according to claim 1, wherein the pulley yoke (9) fixes the pulley (10) with the retainer ring (14) through a shaft (11), a shaft sleeve (12) and a bearing (13), one end of the steel wire rope (16) is connected with the ladder (3), and the other end is connected with the traction heavy hammer (15).

5. The counterweight type telescopic ladder for safely crossing the overhead side railing according to claim 1, wherein the square tube upright post (1) and the ladder (3) are provided with limiting devices to ensure the safety of the ladder (3) in the lifting process.

6. A weight type telescopic ladder for safely crossing high-altitude adjacent side railings as claimed in claim 1, characterized in that iron blocks fixedly connected with steel wire ropes (16) are arranged in upright posts at two sides of the ladder (3).