CN117868666A - Ladder stand system - Google Patents

Abstract

The application discloses cat ladder system, cat ladder system include cat ladder body, joint subassembly, and the cat ladder body includes first cat ladder and second cat ladder, and first cat ladder and second cat ladder relative movement to increase or reduce the length of cat ladder body; the clamping assembly comprises an adjusting unit and a clamping unit, the clamping unit comprises a lock cylinder, and the adjusting unit is connected with the lock cylinder through a brake cable; the second cat ladder is provided with a plurality of first clamping holes, and the lock core can be inserted into the first clamping holes. In the application, a worker applies pressure to the adjusting unit, the adjusting unit moves in position and drives the lock cylinder to move together, and the position locking of the first crawling ladder relative to the second crawling ladder is released; when the crawling ladder body is adjusted to a proper length, the lock cylinders are clamped into the corresponding first clamping holes so as to lock the relative positions of the first crawling ladder and the second crawling ladder, and the crawling ladder body is maintained to be at a required length; the setting of joint subassembly can simplify the process that cat ladder body length changed, need not to set up the locking bolt that needs artifical precession.

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 present application provides a ladder stand system, which adopts the following technical scheme:

the application provides a cat ladder system, the cat ladder system includes cat ladder body, joint subassembly, the cat ladder body includes first cat ladder and second cat ladder, the inside sliding space that is provided with of second cat ladder, first cat ladder can slide in the sliding space to increase or reduce the length of cat 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 crawling ladder, 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, the adjusting unit moves, and the lock cylinder is driven to move together through the brake cable, so that the lock cylinder is inserted into or separated from the first clamping holes.

Embodiments of the present application have at least the following beneficial effects: in the application, a plurality of length gears exist on the crawling ladder body, corresponding first clamping holes exist on each length gear, when the length of the crawling 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 holes, the position locking of the first crawling ladder relative to the second crawling ladder is released, and the first crawling ladder can slide in the second crawling ladder; when the crawling ladder body is adjusted to a proper length, no pressure is applied to the adjusting unit, and the lock cylinder is clamped into the corresponding first clamping hole so as to lock the relative positions of the first crawling ladder and the second crawling ladder, so that the crawling ladder body is maintained to be at a required length; the setting of joint subassembly can simplify the process that cat ladder body length changed, need not to set up the locking bolt that needs artifical precession.

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 telescopic control structure and the first ladder stand are provided with the guide rod therebetween, 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 formed in the guide rod, and the anti-false touch structure can move on the telescopic control structure so as to be clamped into the clamping groove.

In some embodiments of the present application, the clamping unit further comprises a clamping support arranged on the first ladder stand, the lock cylinder is arranged on the clamping support, a second clamping hole is formed in the first ladder stand, and the working end of the lock cylinder can penetrate through the second clamping hole and is clamped into the first clamping 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 cylinder.

In certain embodiments of the present application, the second ladder is provided with an upper limit mechanism, the first ladder is provided with a limit hole, and the upper limit mechanism can be embedded into the limit hole to define the limit length of the ladder body.

In some embodiments of the present application, the upper limit mechanism includes a housing disposed on the second ladder and a slider disposed in the housing, wherein a roller is disposed at an end of the slider, the slider is capable of sliding in the housing, and the slider is connected with the housing 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.

In certain embodiments of the present application, the stair climbing system further comprises a locking mechanism comprising a safety switch, a trigger structure, and a limit assembly;

the safety switch can be electrically connected with a control system of the elevator;

the triggering structure can contact 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 contacts the safety switch to enable the elevator to be in a maintenance mode;

the limit component is positioned between the safety switch and the triggering structure, the entity structure of the crawling ladder body is embedded into a space between the limit component and the triggering structure, and the limit component moves so as to avoid a path of the triggering structure contacting the safety switch; the solid structure of cat ladder body shifts out spacing subassembly, spacing subassembly removes, in order to stop trigger structure contact safety switch.

In certain embodiments of the present application, the locking mechanism further comprises a mounting bracket that can be disposed on a hoistway wall of an elevator, the safety switch is fixedly connected to the mounting bracket, and the trigger structure is movably connected to the mounting bracket.

In certain embodiments of the present disclosure, the ladder stand system further comprises a bypass switch, wherein the bypass switch and the locking mechanism can jointly control the opening or closing of the elevator maintenance 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.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic view of a ladder body in a ladder system of the present application;

FIG. 2 is a schematic view of a first ladder in the ladder system of the present application;

FIG. 3 is a schematic view of a second ladder in the ladder system of the present application;

FIG. 4 is a schematic view of the upper limit mechanism in the ladder system of the present application;

FIG. 5 is a cross-sectional view of the length of the ladder body in the ladder system of the present application in a minimum state;

FIG. 6 is a cross-sectional view of the length of the ladder body in the ladder system of the present application in a maximum condition;

FIG. 7 is a schematic structural view of an anti-false touch structure in the ladder stand system of the present application;

FIG. 8 is a partial enlarged view I of the ladder system of the present application;

FIG. 9 is a schematic view of the locking mechanism of the ladder system of the present application;

FIG. 10 is a schematic view of the structure of the mounting bracket of the locking mechanism in the ladder stand system of the present application;

FIG. 11 is a schematic structural view of a limit assembly of the locking mechanism of the ladder system of the present application;

fig. 12 is a schematic view of the structure of the climbing system of the present application disposed on a hoistway wall of an elevator;

fig. 13 is a control flow diagram of the ladder climbing system of the present application for elevator status.

Reference numerals:

a locking mechanism 100; a mounting bracket 101; the accommodating space 102; a support housing 103; a first support structure 104; a second support structure 105;

a ladder body 201; a safety switch 202;

a trigger structure 301; a second elastic structure 302;

a spacing assembly 401; a platen 402; a blocking structure 403; a guide structure 404; a first elastic structure 405; a projection arrangement 406; a connection structure 407; a chute 408; a shield 409; a via 410;

a first ladder 501; a lock cylinder 502; a gate line 503; a telescoping control structure 504; a guide bar 505; an anti-false touch structure 506; a clamping support 507; a third elastic structure 508;

a second ladder 601; a first card hole 602; an upper limit mechanism 603; a limiting hole 604; a housing 605; a slider 606; roller 607.

Detailed Description

This section will describe embodiments of the present application in detail with reference to fig. 1-13, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functionality throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it should be understood that, if the terms "center," "middle," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships are based on the orientations or positional relationships illustrated in the drawings, it is merely for convenience in describing the present application and simplifying the description, and it does not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application. Features defining "first", "second" are used to distinguish feature names from special meanings, and furthermore, features defining "first", "second" may explicitly or implicitly include one or more such features. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

The embodiment of the application provides a cat ladder system, and the cat ladder system includes cat ladder body 201, joint subassembly and locking mechanical system.

As shown in fig. 1, the ladder body 201 is a core component for assisting a worker to enter the elevator pit, and the length of the ladder assembly can be increased or decreased to adapt to the elevator pits of different depths, thereby improving versatility.

Further, when the length of the ladder stand body 201 is changed to a required length, the clamping assembly can enable the ladder stand body 201 to be maintained at the current length, and the ladder stand body 201 is prevented from continuously changing in length in the use process, so that potential safety hazards are avoided.

Meanwhile, the locking mechanism 100 is used for placing the ladder body 201, the locking mechanism 100 is electrically connected with a control system of the elevator, whether an overhaul mode of the elevator needs to be started or not is determined according to the connection relation between the locking mechanism 100 and the ladder body 201, and safety accidents caused by interference between the ladder body 201 and the elevator are avoided.

As shown in fig. 2 and 3, in some examples, the ladder body 201 includes a first ladder 501 and a second ladder 601, and the first ladder 501 and the second ladder 601 are each provided with a plurality of pedals.

Further, a sliding space is provided inside the second ladder 601, and the first ladder 501 slides inside the second ladder 601 to change the length of the ladder body 201. Wherein, the step of the second ladder 601 also has a hollow portion, and in the process that the first ladder 501 moves relative to the second ladder 601, the step of the first ladder 501 can be embedded into the step of the second ladder 601 multiple times, and when the step of the second ladder 601 is embedded into the step of the first ladder 501 each time, the relative positions of the first ladder 501 and the second ladder 601 can be locked. The distance between adjacent footrests is the same in the ladder body 201 at different lengths, and the stepping actions of the staff are adapted to the uniform footrest distance.

As shown in fig. 4, in some examples, the second ladder 601 is provided with an upper limit mechanism 603, the upper limit mechanism 603 being located near the top of the second ladder 601. When the ladder body 201 is at the maximum limit length, the upper limit mechanism 603 limits the ladder body 201 to continue to increase in length, so as to prevent the first ladder 501 from being separated from the second ladder 601 during sliding. Specifically, the upper limit mechanisms 603 are disposed on both sides of the second ladder 601.

Further, the first ladder 501 is provided with a limiting hole 604, and the limiting hole 604 is located at a position close to the bottom of the second ladder 601 and corresponds to the position of the upper limiting mechanism 603. When the ladder stand body 201 is at the maximum limit length, the upper limit mechanism 603 is embedded into the limit hole 604, and if the first ladder stand 501 continues to move in the second ladder stand 601 along the same direction, the upper limit mechanism 603 interferes with the edge of the limit hole 604, so as to limit the length of the ladder stand body 201.

In some examples, the upper limit mechanism 603 includes a housing 605 and a slider 606, the housing 605 being fixedly disposed on the second ladder 601, the slider 606 being capable of sliding within the housing 605, thereby changing the length of the slider 606 extending inwardly of the second ladder 601.

Wherein a fourth elastic structure is arranged between the slide block 606 and the housing 605, and when the slide block 606 moves towards the inside of the housing 605, the fourth elastic structure contracts; the fourth elastic structure is elongated when the slider 606 is moved toward the outside of the housing 605.

It will be appreciated that when the length of the ladder body 201 does not reach the maximum limit length, the slider 606 contacts the first ladder 501 within the second ladder 601, and the slider 606 is restrained within the housing 605 by the blocking action of the first ladder 501. When the length of the ladder stand body 201 reaches the maximum limit length, the sliding block 606 reaches the position of the limiting hole 604, the blocking action of the first ladder stand 501 is cancelled, and at this time, the sliding block 606 is embedded into the limiting hole 604 under the pushing of the elastic force of the fourth elastic structure.

Specifically, the end of the slider 606 is provided with a roller 607, and when the length of the ladder body 201 does not reach the maximum limit length, the roller 607 is in rolling connection with the first ladder 501 as the first ladder 501 slides relative to the second ladder 601, so as to reduce friction. When the length of the ladder body 201 reaches the maximum limit length, the roller 607 is embedded into the limit hole 604 together with the slider 606.

Meanwhile, the top edge of the limiting hole 604 is provided with an inclined structure, which is formed in a substantially plate shape and is inclined toward the inside of the first ladder 501. When the slider 606 and the roller 607 are already embedded into the limit hole 604, the length of the ladder body 201 cannot be increased further due to the interference between the slider 606 and the bottom edge of the limit hole 604. At this time, the roller 607 can reset the upper limit mechanism 603 by rolling on the inclined structure, that is, the slider 606 gradually returns to the housing 605 against the elastic force of the fourth elastic structure, so that the length reduction process of the ladder stand body 201 is not affected by the upper limit mechanism 603.

In addition, the slide 606 is provided with detents extending to the exterior of the housing 605, the detents being limited in travel to a length of the housing 605 to prevent the slide 606 from completely disengaging the housing 605 during movement.

As shown in fig. 5 and 6, the clamping assembly includes an adjusting unit and a clamping unit, when the ladder main body 201 reaches a required length, the clamping unit can lock the relative positions of the first ladder 501 and the second ladder 601, so that the ladder main body 201 is maintained at the current length. Meanwhile, the adjusting unit can drive the clamping unit to perform the locking operation, a worker applies force to the adjusting unit to enable the adjusting unit to move, and the adjusting unit can drive the clamping unit to move together.

Further, the adjusting unit and the clamping unit are both arranged on the first ladder 501, and the adjusting unit and the clamping unit transmit force and motion through the brake cable 503, and the motion of the adjusting unit drives the clamping unit to move under the pulling action of the brake cable 503.

Specifically, the clamping unit comprises a lock cylinder 502, and the adjusting unit is connected with the lock cylinder 502 through a brake cable 503. Meanwhile, a plurality of first clamping holes 602 are formed in the second ladder 601, and the size of each first clamping hole 602 corresponds to that of the lock cylinder 502. When the lock cylinder 502 locks the relative positions of the first ladder 501 and the second ladder 601, the lock cylinder 502 is inserted into the first card hole 602; when the length of the ladder stand body 201 needs to be changed, the lock cylinder 502 is separated from the first clamping hole 602 under the driving of the adjusting unit, so as to release the locking.

In some examples, the adjusting unit includes a telescopic control structure 504 and a guide rod 505, and the lock cylinder 502 is moved by the movement of the telescopic control structure 504, and then the brake cable 503 is connected to the telescopic control structure 504.

The movement direction of the telescopic control structure 504 is limited, and the telescopic control structure 504 is connected to the first ladder 501 through a guide rod 505, so that the telescopic control structure 504 moves along the guide rod 505.

Specifically, a fifth elastic structure is sleeved on the guide rod 505, and two ends of the fifth elastic structure are respectively connected with the telescopic control structure 504 and the first ladder 501. When the operator applies force to the telescoping control structure 504 to move the telescoping control structure 504, the fifth spring structure compresses; when the operator stops applying force, the fifth spring structure can drive the telescoping control structure 504 to return.

As shown in fig. 7, in some examples, the adjustment unit further includes a false touch preventing structure 506, where the false touch preventing structure 506 is movably connected to the telescopic control structure 504, and the false touch preventing structure 506 can lock the position of the telescopic control structure 504 by movement.

The edge of the anti-false touch structure 506 is provided with a folded edge wrapping the telescopic control structure 504, the anti-false touch structure 506 is prevented from being separated from the telescopic control structure 504, the anti-false touch structure 506 is provided with a hollowed-out portion, and the guide rod 505 passes through the hollowed-out portion. Meanwhile, a clamping groove is formed in the guide rod 505, the edge of the hollowed-out portion can be clamped into the clamping groove in the movement process of the anti-false touch structure 506, and at the moment, the position of the anti-false touch structure 506 is fixed, and the telescopic control structure 504 is limited at a normal position.

As shown in fig. 8, which is a partial enlarged view I, in some examples, the clamping unit further includes a clamping bracket 507, the clamping bracket 507 is disposed on the first ladder stand 501, and the lock cylinder 502 is disposed on the clamping bracket 507 to stabilize a position of the lock cylinder 502.

Further, a second clamping hole is formed in the first ladder 501, the working end of the lock cylinder 502 penetrates through the second clamping hole, and the lock cylinder 502 can move in the range of the second clamping hole. When the length of the ladder stand body 201 does not reach the maximum limit length, the working end of the lock cylinder 502 abuts against the inner wall of the second ladder stand 601; when the length of the ladder body 201 reaches the maximum limit length, the working end of the lock cylinder 502 is snapped into the first snap hole 602.

In some examples, the clamping unit further includes a third elastic structure 508, the third elastic structure 508 is sleeved on the lock cylinder 502, and the third elastic structure 508 connects the clamping bracket 507 and the lock cylinder 502. When the telescopic control structure 504 does not transmit motion, the third elastic structure 508 continuously pushes the lock cylinder 502, so that the lock cylinder 502 can be automatically clamped into the corresponding first clamping hole 602.

As shown in fig. 9, an embodiment of the present application provides a locking mechanism 100, the locking mechanism 100 including a mounting bracket 101, a safety switch 202, a trigger structure 301, and a limit assembly 401.

The mounting bracket 101 is used to support the safety switch 202, the trigger structure 301 and the limit assembly 401. Normally, the physical structure of the ladder body 201 is embedded in the locking mechanism 100, and the triggering structure 301 contacts the safety switch 202, so that the safety switch 202 is in a normally closed state, and the position of the ladder body 201 does not interfere with the normal operation of the elevator. Specifically, the pedal portion of the ladder body 201 is embedded within the locking mechanism 100.

When a worker needs to use the ladder stand body 201 to assist in entering the elevator pit, the ladder stand body 201 is taken out from the locking mechanism 100, the limiting assembly 401 limits the position of the triggering structure 301, the triggering structure 301 is separated from the safety switch 202, the elevator is in an overhaul mode, and safety accidents caused by descending of the elevator are avoided.

When the maintenance of the staff using the ladder body 201 is completed, the physical structure of the ladder body 201 needs to be re-embedded into the locking mechanism 100, and the triggering structure 301 contacts the safety switch 202 again to release the maintenance mode of the elevator.

If staff leaves the ladder stand body 201 at the bottom of the elevator, the overhaul mode of the elevator cannot be released, and interference with the ladder stand body 201 in the process of descending the elevator is avoided.

As shown in fig. 10, in some examples, the mounting bracket 101 is disposed on a hoistway wall of an elevator, and the physical structure of the ladder stand body 201 can avoid a space in which the elevator normally operates when the locking mechanism 100 is embedded, so as to avoid interference between the ladder stand body 201 and the elevator.

The safety switch 202 is fixedly connected to the mounting bracket 101, the triggering structure 301 is movably connected to the mounting bracket 101, and the triggering structure 301 can contact or separate from the safety switch 202 during the movement of the triggering structure 301 on the mounting bracket 101.

Further, the mounting bracket 101 is provided with a containing space 102, and the limiting component 401 is located in the containing space 102. Therefore, when the physical structure of the ladder body 201 is embedded in the limit assembly 401, the physical structure of the ladder body 201 is also located in the accommodating space 102, i.e. embedded in the locking mechanism 100.

Specifically, when the triggering structure 301 needs to contact the safety switch 202, the limiting component 401 dodges out of the motion path of the triggering structure 301; when the trigger structure 301 needs to be disengaged from the safety switch 202, the stop assembly 401 blocks the movement path of the trigger structure 301. The limiting assembly 401 can move and is movably connected in the accommodating space 102.

In some examples, the safety switch 202 is electrically connected to the control system of the elevator and is configured as a normally closed switch. When the triggering structure 301 contacts the safety switch 202, the safety switch 202 does not give an instruction to the control system of the elevator, so that the elevator can keep normal operation; when the trigger structure 301 is disengaged from the safety switch 202, the safety switch 202 instructs the control system of the elevator to place the elevator in a service mode.

In some examples, the mounting bracket 101 is provided with a support housing 103, the support housing 103 is used to support the trigger structure 301, and the trigger structure 301 is within the confines of the support housing 103.

Wherein, be provided with the locating hole on the support casing 103, trigger structure 301 wears out support casing 103 along the locating hole, then trigger structure 301 is limited in the within range of locating hole, avoids trigger structure 301 to take place to rock in the motion process, guarantees the motion precision. It will be appreciated that the length of the trigger structure 301 within the support housing 103 and the length outside the support housing 103 change continuously during movement of the trigger structure 301.

In some examples, a second elastic structure 302 is disposed on the triggering structure 301, and the second elastic structure 302 connects the triggering structure 301 with the support housing 103. The second elastic structure 302 gives the triggering structure 301 elastic force, and the direction of the elastic force is toward the safety switch 202. When the triggering structure 301 contacts with the safety switch 202, the second elastic structure 302 enables the triggering structure 301 to press the safety switch 202 through elastic force; when the trigger structure 301 is held in a position to disengage the safety switch 202, the second elastic structure 302 contracts to store elastic potential energy in preparation for the trigger structure 301 to press the safety switch 202 again.

The side wall of the triggering structure 301 is provided with a protruding portion, the second elastic structure 302 is sleeved on the triggering structure 301, and two ends of the second elastic structure 302 are respectively connected with the protruding portion of the side wall of the triggering structure 301 and the supporting shell 103, and the second elastic structure 302 can drive the triggering structure 301 to move due to the fixed position of the supporting shell 103. Specifically, the second elastic structure 302 employs a spring.

In addition, a hanging hole is provided at one end of the triggering structure 301 away from the safety switch 202, and the hanging hole is used for hanging the lifting rope. When the ladder stand body 201 needs to be taken out from the locking mechanism 100, the lifting rope is pulled first to separate the triggering structure 301 from the safety switch 202 by a certain distance, and the limiting effect of the triggering structure 301 on the limiting assembly 401 is released. While facilitating removal of the ramp body 201, the limit assembly 401 is able to limit the trigger structure 301 to a position away from the safety switch 202.

As shown in fig. 11, in some examples, a limit assembly 401 is disposed between the safety switch 202 and the trigger structure 301, and the limit assembly 401 is within the receiving space 102.

Further, the limiting assembly 401 includes a pressing plate 402 and a blocking structure 403 connected to each other, the pressing plate 402 contacts the ladder body 201, and the pressing plate 402 can move in the accommodating space 102. During the process of embedding the solid structure of the ladder body 201 into the locking mechanism 100, the ladder body 201 contacts and presses the pressing plate 402, thereby driving the pressing plate 402 to move. When the solid structure of the ladder body 201 is taken out from the locking mechanism 100, the pressing plate 402 pushes the solid structure of the ladder body 201 to move out of the accommodating space 102.

It will be appreciated that the movement of the platen 402 moves the blocking structure 403 together, and during movement the blocking structure 403 limits the triggering structure 301 to a position that is free of the safety switch 202, or alternatively, the blocking structure 403 escapes the path along which the triggering structure 301 moves toward the safety switch 202.

In some examples, to avoid the stop assembly 401 from deviating from a predetermined travel path during movement, the platen 402 is provided with a guide structure 404, the mounting bracket 101 is provided with a guide hole, and the guide structure 404 is disposed through the guide hole, defining the range within which the guide structure 404 moves.

The first elastic structure 405 is disposed between the pressing plate 402 and the mounting bracket 101, and the first elastic structure 405 is sleeved on the guiding structure 404, so as to ensure the position stability of the first elastic structure 405.

Further, during the process of embedding the physical structure of the ladder body 201 into the locking mechanism 100, the ladder body 201 pushes the pressing plate 402 to move, and the first elastic structure 405 is gradually compressed along with the movement of the pressing plate 402. When the ladder body 201 is removed from the locking mechanism 100, the first elastic structure 405 gradually expands, and the first elastic structure 405 drives the pressing plate 402 to push out the solid structure of the ladder body 201 from the accommodating space 102.

It can be appreciated that if the solid structure of the ladder body 201 is within the stroke range of the pressing plate 402, the pressing plate 402 always contacts the ladder body 201 under the pushing action of the first elastic structure 405. Specifically, the first elastic structure 405 employs a spring.

In some examples, to avoid over travel of the platen 402, the guide structure 404 is provided with a protruding structure 406, and when the platen 402 moves to a limited travel, the protruding structure 406 snaps over the edge of the guide hole outside the receiving space 102.

In some examples, the blocking structure 403 may bear the elastic force given by the second elastic structure 302 during the process of blocking the triggering structure 301, in order to avoid deformation of the blocking structure 403 under the stress condition, the blocking structure 403 is disposed outside the accommodating space 102 and attached to the surface of the mounting bracket 101, and then the mounting bracket 101 and the blocking structure 403 may jointly bear the elastic force given by the second elastic structure 302.

Further, the blocking structure 403 is connected to the platen 402 by a connecting structure 407, wherein the connecting structure 407 may employ a fastener. The connection structure 407 needs to be provided through the mounting bracket 101 and the mounting bracket 101 needs to be provided with a space for the movement of the connection structure 407. Therefore, the mounting bracket 101 is provided with a chute 408, the connection structure 407 is disposed through the chute 408, and the connection structure 407 can slide along the chute 408 to match the moving process of the platen 402.

In some examples, the spacing assembly 401 further includes a baffle 409, where the baffle 409 is disposed at an angle to the platen 402, where the baffle 409 is integrally formed with the platen 402, or where the baffle 409 is connected to the platen 402 in a separate configuration.

Further, the baffle 409 is located in the accommodating space 102, and the baffle 409 is attached to the surface of the mounting bracket 101.

In some examples, the mounting bracket 101 includes a first support structure 104 and a second support structure 105 connected to each other, where the first support structure 104 is formed substantially as a bent plate-like structure, and the first support structure 104 and the second support structure 105 enclose the accommodating space 102.

The triggering structure 301 is disposed on the first supporting structure 104, the safety switch 202 is disposed on the second supporting structure 105, and the accommodating space 102 is between the triggering structure 301 and the safety switch 202. Further, the first support structure 104, the baffle 409 and the second support structure 105 are all provided with the through holes 410, so that the triggering structure 301 needs to pass through the accommodating space 102 and each through hole 410 in the process of contacting the safety switch 202.

Specifically, the locking mechanism 100 is embedded in the physical structure of the ladder body 201 in a normal state, the triggering structure 301 passes through each through hole 410 and contacts the safety switch 202, the physical structure of the ladder body 201 is limited in the space between the triggering structure 301 and the pressing plate 402, and the elevator can normally operate. At this time, since the blocking structure 403 abuts against the trigger structure 301 and the inner wall of the via 410 abuts against the trigger structure 301, the trigger structure 301 also defines the position of the spacing component 401.

When the crawling ladder body 201 needs to be taken out, the triggering structure 301 is pulled, the triggering structure 301 is separated from the safety switch 202, and the overhaul mode of the elevator is started. The trigger structure 301 moves out of the accommodating space 102 along each through hole 410, the limiting action of the trigger structure 301 on the limiting assembly 401 is released, the limiting assembly 401 moves integrally, and the trigger structure 301 is blocked on the movement path of the trigger structure 301, so that the trigger structure 301 is maintained at a position separated from the safety switch 202. Meanwhile, as the limit assembly 401 moves, the limit assembly 401 pushes the ladder body 201 to disengage from the locking mechanism 100.

When the ladder stand body 201 is used, the locking mechanism 100 needs to be embedded again, the physical structure of the ladder stand body 201 contacts and pushes the pressing plate 402 in the accommodating space 102, and in the moving process of the limiting assembly 401, the through holes 410 gradually form a mutually corresponding position relationship, so that the limiting assembly 401 avoids a movement path of the triggering structure 301, the triggering structure 301 contacts the safety switch 202 again under the action of the second elastic structure 302, and the overhaul mode of the elevator is relieved.

As shown in fig. 12, in some examples, the trigger structure 301 and the safety switch 202 in the locking mechanism 100 are distributed up and down, and the pedal portion of the ladder stand body 201 can be taken out of or inserted into the locking mechanism 100 in a horizontal direction to turn on or off the inspection mode of the elevator.

As shown in fig. 13, in some examples, the ladder system further includes a bypass switch that forms a dual control of the elevator service mode with the locking mechanism 100.

When the trigger structure 301 is separated from the safety switch 202 by moving upwards, the safety switch 202 is turned on, at this time, if the bypass switch is on, the maintenance mode is turned off, and if the bypass switch is off, the maintenance mode is turned off;

when the trigger structure 301 contacts the safety switch 202 by moving down, the safety switch 202 is turned off, and at this time, the maintenance mode is turned off regardless of whether the bypass switch is on or off, thereby forming dual control.

Further, an indicator light is arranged on the bypass switch, and when the bypass switch is in a passage, the indicator light is lightened to prompt a worker of the current elevator state. When the bypass switch is opened, the indicator light is extinguished.

In the description of the present specification, if a description appears with reference to the term "one embodiment," "some examples," "some embodiments," "an exemplary embodiment," "an example," "a particular example," or "some examples," etc., it is intended that the particular feature, structure, material, or characteristic described in connection with the embodiment or example be included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present application have been described in detail above with reference to the drawings, but the present application 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 application.

Claims (10)

1. A ladder system, comprising:

the cat ladder comprises a cat ladder body, wherein the cat ladder body comprises a first cat ladder and a second cat ladder, a sliding space is formed in the second cat ladder, and the first cat ladder can slide in the sliding space so as to increase or decrease the length of the cat 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, the adjusting unit moves, and the lock cylinder is driven to move together through the brake cable, so that the lock cylinder is inserted into or separated from the first clamping holes.

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 locking mechanism, wherein the locking mechanism comprises a safety switch, a triggering structure and a limiting assembly;

the safety switch can be electrically connected with a control system of the elevator;

the triggering structure can contact 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 contacts the safety switch to enable the elevator to be in a maintenance mode;

the limit component is positioned between the safety switch and the triggering structure, the entity structure of the crawling ladder body is embedded into a space between the limit component and the triggering structure, and the limit component moves so as to avoid a path of the triggering structure contacting the safety switch; the solid structure of cat ladder body shifts out spacing subassembly, spacing subassembly removes, in order to stop trigger structure contact safety switch.

9. The ladder system of claim 8, wherein,

the locking mechanism further comprises a mounting bracket which can be arranged on the wall of the well of the elevator, the safety switch is fixedly connected with the mounting bracket, and the triggering structure is movably connected with the mounting bracket.

10. The ladder system of claim 8, 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.