CN-117868666-B - Ladder stand system

CN117868666BCN 117868666 BCN117868666 BCN 117868666BCN-117868666-B

Abstract

The application discloses a crawling ladder system which comprises a crawling ladder body and a clamping assembly, wherein the crawling ladder body comprises a first crawling ladder and a second crawling ladder, the first crawling ladder and the second crawling ladder relatively move to increase or decrease the length of the crawling ladder body, the clamping assembly comprises an adjusting unit and a clamping unit, the clamping unit comprises a lock cylinder, the adjusting unit is connected with the lock cylinder through a brake cable, a plurality of first clamping holes are formed in the second crawling ladder, and the lock cylinder can be inserted into the first clamping holes. The lock cylinder is clamped into the corresponding first clamping hole when the crawling ladder body is adjusted to a proper length, so that the relative position of the first crawling ladder and the second crawling ladder is locked, the crawling ladder body is maintained to be at a required length, and the clamping assembly can simplify the length change process of the crawling ladder body without arranging a locking bolt which needs to be screwed manually.

Inventors

LI WENSHENG
XU ZHIQIANG
CHEN TENGFEI
CHEN XIN
LI NA

Assignees

广州广日电梯工业有限公司

Dates

Publication Date: 20260512
Application Date: 20231030

Claims (8)

1. A ladder system, comprising: The ladder comprises a ladder body, wherein the ladder body comprises a first ladder and a second ladder, a sliding space is arranged in the second ladder, the first ladder can slide in the sliding space to increase or decrease the length of the ladder body, a hollow part is arranged on a pedal of the second ladder, and when the pedal of the second ladder and the pedal of the first ladder are mutually embedded, the relative positions of the first ladder and the second ladder can be locked, so that the distance between adjacent pedals is the same under different lengths of the ladder body; The clamping assembly comprises an adjusting unit and a clamping unit, the adjusting unit and the clamping unit are arranged on the first ladder stand, the clamping unit comprises a lock cylinder, and the adjusting unit is connected with the lock cylinder through a brake cable; The second ladder stand is provided with a plurality of first clamping holes, and the adjusting unit moves and drives the lock cylinder to move together through the brake cable so that the lock cylinder can be inserted into or separated from the first clamping holes; the crawling ladder system further comprises a locking mechanism, the locking mechanism comprises a safety switch, a triggering structure and a limiting component, the safety switch can be electrically connected with a control system of the elevator, the triggering structure can be in contact with or separate from the safety switch, the triggering structure is separated from the safety switch to enable the elevator to be in an overhaul mode, the triggering structure is contacted with the safety switch to enable the elevator to be in an overhaul mode, a second elastic structure is arranged on the triggering structure, the limiting component is located between the safety switch and the triggering structure, the entity structure of the crawling ladder body is embedded in a space between the limiting component and the triggering structure, the limiting component moves to avoid a path of the triggering structure contacting the safety switch, the entity structure of the crawling ladder body moves out of the limiting component, the limiting component moves to prevent the triggering structure from contacting the safety switch, the locking mechanism further comprises a mounting bracket, the mounting bracket can be arranged on a hoistway wall of the elevator, the safety switch is fixedly connected with the mounting bracket, the triggering structure is movably connected with the mounting bracket, the mounting bracket comprises a blocking structure and a blocking structure which is arranged on the surface of the mounting bracket, so that the mounting bracket and the blocking structure bear the elastic force given by the second elastic structure together, and a first elastic structure is arranged between the pressing plate and the mounting bracket.
2. The ladder system of claim 1, wherein, The adjusting unit comprises a telescopic control structure and a guide rod, the brake cable is connected to the telescopic control structure, the guide rod is arranged between the telescopic control structure and the first ladder stand, and the telescopic control structure can move along the guide rod.
3. The ladder system of claim 2, wherein, The adjusting unit further comprises an error touch prevention structure which is movably connected with the telescopic control structure, a clamping groove is formed in the guide rod, and the error touch prevention structure can move on the telescopic control structure so as to be clamped into the clamping groove.
4. The ladder system of claim 1, wherein, The clamping unit further comprises a clamping support arranged on the first crawling ladder, the lock cylinder is arranged on the clamping support, a second clamping hole is formed in the first crawling ladder, and the working end of the lock cylinder can penetrate through the second clamping hole and is clamped into the first clamping hole.
5. The ladder system of claim 4, wherein, The clamping unit further comprises a third elastic structure, the third elastic structure is sleeved on the lock cylinder, and two ends of the third elastic structure are respectively connected with the clamping support and the lock cylinder.
6. The ladder system of claim 1, wherein, The second cat ladder is provided with stop gear, first cat ladder is provided with spacing hole, go up stop gear can imbed in the spacing hole, in order to inject the limit length of cat ladder body.
7. The ladder system of claim 6, wherein, The upper limit mechanism comprises a shell arranged on the second ladder stand and a sliding block arranged in the shell, the end part of the sliding block is provided with a roller, the sliding block can slide in the shell, and the sliding block is connected with the shell through a fourth elastic structure; And when the upper limiting mechanism passes through the limiting hole, the fourth elastic structure drives the sliding block and the roller to be embedded into the limiting hole.
8. The ladder system of claim 1, wherein, The crawling ladder system further comprises a bypass switch, and the bypass switch and the locking mechanism can jointly control the opening or closing of an elevator overhaul mode; the triggering structure contacts the safety switch, and the overhaul mode of the elevator is closed; The triggering structure is separated from the safety switch, the bypass switch is connected with the elevator, and the overhaul mode of the elevator is closed; the triggering structure is separated from the safety switch, the bypass switch is disconnected, and an overhaul mode of the elevator is started.

Description

Ladder stand system Technical Field The application relates to the technical field of elevator overhaul, in particular to a cat ladder system. Background The elevator pit is the location where the traction elevator mounts the elevator buffer, the faster the rated running speed of the elevator, the greater the required safe buffer distance, it being understood that the higher the buffer design, the deeper the elevator pit. In the face of a deep pit, workers often need to smoothly reach the pit of the elevator by means of auxiliary tools to carry out maintenance work of the elevator, and the pit ladder stand is an auxiliary tool commonly used for the maintenance work. However, the length of the ladder cannot be adjusted in general, and it is difficult to use the ladder in elevator pits of different depths. The related art discloses an outdoor cat ladder for car as a house, and the telescopic link slides in the telescopic boom to increase or reduce the length of cat ladder. When the cat ladder is in required length, the length of the cat ladder needs to be fixed through the locking bolt, the locking bolt needs to be screwed in manually, and the operation is complex. Meanwhile, the locking bolt is difficult to be screwed in manually, the screwing degree of each time is consistent, and the locking bolt or a telescopic arm contacted with the locking bolt is easy to damage in the screwing process. Disclosure of Invention In order to solve at least one of the above technical problems, the application provides a ladder stand system, which adopts the following technical scheme: The application provides a ladder stand system which comprises a ladder stand body and a clamping assembly, wherein the ladder stand body comprises a first ladder stand and a second ladder stand, a sliding space is formed in the second ladder stand, the first ladder stand can slide in the sliding space to increase or decrease the length of the ladder stand body, the clamping assembly comprises an adjusting unit and a clamping unit, the adjusting unit and the clamping unit are arranged on the first ladder stand, the clamping unit comprises a lock cylinder, the adjusting unit is connected with the lock cylinder through a brake wire, a plurality of first clamping holes are formed in the second ladder stand, and the adjusting unit moves and drives the lock cylinder to move together through the brake wire so that the lock cylinder can be inserted into or separated from the first clamping holes. The embodiment of the application has the advantages that a plurality of length gears exist on the ladder body, each length gear is provided with a corresponding first clamping hole, when the length of the ladder body needs to be increased or reduced, a worker applies pressure to the adjusting unit, the adjusting unit moves in position and drives the brake cable to move, the brake cable can drive the lock cylinder to move together in the moving process, the lock cylinder is separated from the current first clamping hole, the position locking of the first ladder relative to the second ladder is released, the first ladder can slide in the second ladder, when the ladder body is adjusted to a proper length, no pressure is applied to the adjusting unit, the lock cylinder is clamped into the corresponding first clamping hole to lock the relative position of the first ladder and the second ladder, the ladder body is maintained to be at the required length, and the setting of the clamping assembly can simplify the length changing process of the ladder body without setting a locking bolt needing manual screwing. In some embodiments of the present application, the adjusting unit includes a telescopic control structure and a guide rod, the brake cable is connected to the telescopic control structure, the guide rod is disposed between the telescopic control structure and the first ladder stand, and the telescopic control structure can move along the guide rod. In some embodiments of the present application, the adjusting unit further includes an anti-false touch structure, the anti-false touch structure is movably connected to the telescopic control structure, a clamping groove is provided on the guide rod, and the anti-false touch structure can move on the telescopic control structure to be clamped into the clamping groove. In some embodiments of the present application, the locking unit further includes a locking bracket disposed on the first ladder stand, the lock cylinder is disposed on the locking bracket, a second locking hole is disposed on the first ladder stand, and a working end of the lock cylinder can pass through the second locking hole and be locked into the first locking hole. In some embodiments of the present application, the clamping unit further includes a third elastic structure, the third elastic structure is sleeved on the lock cylinder, and two ends of the third elastic structure are respectively connected with the clamping bracket and the lock cy