A ladder system

Abstract

The application discloses a ladder system, which comprises a ladder body and a clamping assembly. The ladder body comprises a first ladder and a second ladder. The first ladder and the second ladder are relatively moved to increase or decrease the length of the ladder body. The clamping assembly comprises an adjusting unit and a clamping unit. The clamping unit comprises a lock cylinder. The adjusting unit and the lock cylinder are connected through a gate line. A plurality of first clamping holes are arranged on the second ladder. The lock cylinder can be inserted into the first clamping hole. In the application, the staff exerts pressure on the adjusting unit, the adjusting unit moves in position, drives the lock cylinder to move together, and releases the position locking of the first ladder relative to the second ladder. When the ladder body is adjusted to the appropriate length, the lock cylinder is clamped into the corresponding first clamping hole to lock the relative position of the first ladder and the second ladder, so that the ladder body is maintained at the required length. The setting of the clamping assembly can simplify the process of changing the length of the ladder body, and there is no need to set a locking bolt which needs to be manually screwed in.

Description

Technical Field

[0001] This application relates to the field of elevator maintenance technology, and in particular to a ladder climbing system. Background Technology

[0002] The elevator pit is where the elevator buffer is installed in a traction elevator. The faster the rated operating speed of the elevator, the greater the required safety buffer distance. Understandably, the higher the buffer is designed, the deeper the elevator pit will be.

[0003] When faced with a deep pit, workers often need auxiliary tools to reach the elevator pit and carry out elevator maintenance work. Pit ladders are commonly used auxiliary tools for maintenance work. However, the length of the ladder is usually not adjustable, making it difficult to use in elevator pits of different depths.

[0004] The related technology discloses an outdoor ladder for RVs, in which a telescopic rod slides within a telescopic arm to increase or decrease the ladder's length. When the ladder is at the desired length, it needs to be fixed by locking bolts, which require manual tightening, making the operation complex. Furthermore, manually tightening the locking bolts makes it difficult to ensure consistent tightening each time, and the locking bolts or the telescopic arm in contact with them are easily damaged during the tightening process. Summary of the Invention

[0005] To solve at least one of the above-mentioned technical problems, this application provides a ladder climbing system, the technical solution of which is as follows:

[0006] This application provides a ladder system, which includes a ladder body and a locking assembly. The ladder body includes a first ladder and a second ladder. The second ladder has a sliding space inside, and the first ladder can slide within the sliding space to increase or decrease the length of the ladder body. The locking assembly includes an adjustment unit and a locking unit, both of which are disposed on the first ladder. The locking unit includes a lock cylinder, and the adjustment unit and the lock cylinder are connected by a gate cable. The second ladder has a plurality of first locking holes. When the adjustment unit moves, it drives the lock cylinder to move together through the gate cable, so that the lock cylinder can be inserted into or disengaged from the first locking holes.

[0007] The embodiments of this application have at least the following beneficial effects: In this application, the ladder body has multiple length positions, and each length position has a corresponding first locking hole. When it is necessary to increase or decrease the length of the ladder body, the operator applies pressure to the adjustment unit, the adjustment unit moves, and drives the gate cable to move. During the movement of the gate cable, the lock cylinder can move together, and the lock cylinder disengages from the current first locking hole, releasing the position lock of the first ladder relative to the second ladder, allowing the first ladder to slide inside the second ladder. When the ladder body is adjusted to a suitable length, no more pressure is applied to the adjustment unit, and the lock cylinder engages in the corresponding first locking hole to lock the relative position of the first ladder and the second ladder, so that the ladder body is maintained at the required length. The setting of the locking component simplifies the process of changing the length of the ladder body, eliminating the need for manually screwing in locking bolts.

[0008] In some embodiments of this application, the adjustment unit includes a telescopic control structure and a guide rod, the gate cable is connected to the telescopic control structure, a guide rod is provided between the telescopic control structure and the first ladder, and the telescopic control structure can move along the guide rod.

[0009] In some embodiments of this application, the adjustment unit further includes an anti-accidental touch structure, which is movably connected to the telescopic control structure. The guide rod is provided with a slot, and the anti-accidental touch structure can move on the telescopic control structure to engage with the slot.

[0010] In some embodiments of this application, the latching unit further includes a latching bracket disposed on the first ladder, the lock cylinder is disposed on the latching bracket, the first ladder is provided with a second latching hole, and the working end of the lock cylinder can pass through the second latching hole and latch into the first latching hole.

[0011] In some embodiments of this application, the snap-fit ​​unit further includes a third elastic structure, which is sleeved on the lock cylinder, and the two ends of the third elastic structure are respectively connected to the snap-fit ​​bracket and the lock cylinder.

[0012] In some embodiments of this application, the second ladder is provided with an upper limit mechanism, and the first ladder is provided with a limit hole. The upper limit mechanism can be embedded in the limit hole to limit the maximum length of the ladder body.

[0013] In some embodiments of this application, the upper limit mechanism includes a housing disposed on the second ladder and a slider disposed within the housing. The end of the slider is provided with a roller, and the slider is capable of sliding within the housing. The slider and the housing are connected by a fourth elastic structure.

[0014] When the upper limit mechanism passes through the limiting hole, the fourth elastic structure drives the slider and the roller to embed into the limiting hole.

[0015] In some embodiments of this application, the ladder system further includes a locking mechanism, which includes a safety switch, a triggering structure, and a limit component;

[0016] The safety switch can be electrically connected to the elevator's control system;

[0017] The triggering structure can contact or disconnect from the safety switch; disconnecting the triggering structure from the safety switch puts the elevator into maintenance mode; contacting the triggering structure with the safety switch deactivates the elevator from maintenance mode.

[0018] The limiting component is located between the safety switch and the triggering structure. The physical structure of the ladder body is embedded in the space between the limiting component and the triggering structure. The limiting component moves to avoid the path of the triggering structure contacting the safety switch. The physical structure of the ladder body moves out of the limiting component, and the limiting component moves to block the triggering structure from contacting the safety switch.

[0019] In some embodiments of this application, the locking mechanism further includes a mounting bracket that can be mounted on the elevator shaft wall, the safety switch is fixedly connected to the mounting bracket, and the triggering structure is movably connected to the mounting bracket.

[0020] In some embodiments of this application, the climbing system further includes a bypass switch, which, together with the locking mechanism, can control the opening or closing of the elevator maintenance mode;

[0021] When the triggering structure contacts the safety switch, the elevator's maintenance mode is turned off;

[0022] The triggering structure disengages from the safety switch, and the bypass switch is activated, thus disabling the elevator's maintenance mode.

[0023] When the triggering structure disengages from the safety switch and the bypass switch is disconnected, the elevator's maintenance mode is activated.

[0024] Additional aspects and advantages of this 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 this application. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0026] Figure 1This is a schematic diagram of the structure of the ladder body in the ladder system of this application;

[0027] Figure 2 This is a schematic diagram of the structure of the first ladder in the ladder climbing system of this application;

[0028] Figure 3 This is a schematic diagram of the structure of the second ladder in the ladder climbing system of this application;

[0029] Figure 4 This is a schematic diagram of the upper limit mechanism in the ladder climbing system of this application;

[0030] Figure 5 This is a cross-sectional view of the ladder body in the ladder system of this application when the length is at its minimum.

[0031] Figure 6 This is a cross-sectional view of the ladder body in the ladder system of this application when the length is at its maximum.

[0032] Figure 7 This is a schematic diagram of the anti-accidental touch structure in the ladder climbing system of this application;

[0033] Figure 8 This is a partial enlarged view (I) of the ladder climbing system of this application;

[0034] Figure 9 This is a schematic diagram of the locking mechanism in the ladder system of this application;

[0035] Figure 10 This is a schematic diagram of the mounting bracket for the locking mechanism in the ladder system of this application;

[0036] Figure 11 This is a schematic diagram of the limiting component of the locking structure in the ladder system of this application;

[0037] Figure 12 This is a schematic diagram of the structure of the ladder system of this application installed on the elevator shaft wall;

[0038] Figure 13 This is a flowchart of the elevator status control process of the elevator climbing system in this application.

[0039] Figure label:

[0040] Locking mechanism 100; mounting bracket 101; accommodating space 102; supporting housing 103; first supporting structure 104; second supporting structure 105;

[0041] Ladder body 201; Safety switch 202;

[0042] Trigger structure 301; Second elastic structure 302;

[0043] Limiting component 401; pressure plate 402; blocking structure 403; guide structure 404; protruding structure 406; connecting structure 407; slide groove 408; baffle 409; through hole 410;

[0044] First ladder 501; lock cylinder 502; gate cable 503; telescopic control structure 504; guide rod 505; anti-accidental contact structure 506; snap-fit ​​bracket 507; third elastic structure 508;

[0045] Second ladder 601; first locking hole 602; upper limit mechanism 603; limiting hole 604; outer shell 605; slider 606; roller 607. Detailed Implementation

[0046] This section will combine Figures 1 to 13 The embodiments of this application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0047] In the description of this application, it should be understood that the use of terms such as "center," "middle," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" to indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings is solely for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Features defined with "first" and "second" are used to distinguish feature names and do not have special meanings. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] This application provides a ladder system, which includes a ladder body 201, a snap-fit ​​component, and a locking mechanism.

[0050] like Figure 1 As shown, the ladder body 201 is the core component that assists workers in entering the elevator pit, and the length of the ladder assembly can be increased or decreased to adapt to elevator pits of different depths, thereby improving versatility.

[0051] Furthermore, when the length of the ladder body 201 changes to the required length, the snap-fit ​​component can keep the ladder body 201 at the current length, preventing the ladder body 201 from continuing to change length during use, thereby avoiding safety hazards.

[0052] Meanwhile, the locking mechanism 100 is used to hold the ladder body 201. The locking mechanism 100 is electrically connected to the elevator control system. The connection relationship between the locking mechanism 100 and the ladder body 201 determines whether the elevator's maintenance mode needs to be activated, thus avoiding safety accidents caused by interference between the ladder body 201 and the elevator.

[0053] like Figure 2 , Figure 3 As shown, in some examples, the ladder body 201 includes a first ladder 501 and a second ladder 601, both of which are provided with a number of steps.

[0054] Furthermore, the second ladder 601 has a sliding space inside, allowing the first ladder 501 to slide within it, thus changing the length of the ladder body 201. The steps of the second ladder 601 also have hollow sections. During the movement of the first ladder 501 relative to the second ladder 601, the steps of the first ladder 501 can repeatedly engage with the steps of the second ladder 601. Each time a step of the second ladder 601 engages with a step of the first ladder 501, the relative positions of the two ladders are locked. Therefore, the distance between adjacent steps remains the same regardless of the length of the ladder body 201, providing a uniform step spacing to accommodate the worker's pedaling movements.

[0055] like Figure 4 As shown, in some examples, the second ladder 601 is provided with an upper limit mechanism 603, which is located near the top of the second ladder 601. When the ladder body 201 is at its maximum limit length, the upper limit mechanism 603 restricts the ladder body 201 from continuing to increase its length, preventing the first ladder 501 from detaching from the second ladder 601 during sliding. Specifically, the upper limit mechanism 603 is provided on both sides of the second ladder 601.

[0056] Furthermore, the first ladder 501 is provided with a limiting hole 604, which is located near the bottom of the second ladder 601 and corresponds to the position of the upper limit mechanism 603. When the ladder body 201 is at its maximum limit length, the upper limit mechanism 603 is embedded in the limiting hole 604. If the first ladder 501 continues to move in the same direction within the second ladder 601, the upper limit mechanism 603 will interfere with the edge of the limiting hole 604, thereby limiting the length of the ladder body 201.

[0057] In some examples, the upper limit mechanism 603 includes a housing 605 and a slider 606. The housing 605 is fixedly mounted on the second ladder 601, and the slider 606 can slide inside the housing 605, thereby changing the length of the slider 606 extending into the second ladder 601.

[0058] A fourth elastic structure is provided between the slider 606 and the outer shell 605. When the slider 606 moves into the outer shell 605, the fourth elastic structure contracts; when the slider 606 moves out of the outer shell 605, the fourth elastic structure extends.

[0059] Understandably, when the length of the ladder body 201 has not reached its maximum limit, the slider 606 contacts the first ladder 501 inside the second ladder 601. Under the blocking effect of the first ladder 501, the slider 606 is confined within the outer shell 605. When the length of the ladder body 201 reaches its maximum limit, the slider 606 reaches the position of the limiting hole 604, the blocking effect of the first ladder 501 is removed, and at this time, under the elastic force of the fourth elastic structure, the slider 606 is embedded in the limiting hole 604.

[0060] Specifically, a roller 607 is provided at the end of the slider 606. When the length of the ladder body 201 has not reached its maximum limit, the roller 607 rolls with the first ladder 501 as the first ladder 501 slides relative to the second ladder 601 to reduce friction. When the length of the ladder body 201 reaches its maximum limit, the roller 607 is inserted into the limiting hole 604 along with the slider 606.

[0061] Meanwhile, the top edge of the limiting hole 604 is provided with an inclined structure, which is roughly plate-shaped and tilts inward toward the interior of the first ladder 501. When the slider 606 and the roller 607 are embedded in the limiting hole 604, the length of the ladder body 201 cannot continue to increase due to interference between the slider 606 and the bottom edge of the limiting 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 overcomes the elastic force of the fourth elastic structure and gradually returns to the outer shell 605, so the process of reducing the length of the ladder body 201 is not affected by the upper limit mechanism 603.

[0062] In addition, the slider 606 is provided with a locking pin that extends to the outside of the housing 605. The stroke of the locking pin is limited to the length of the housing 605 to prevent the slider 606 from completely detaching from the housing 605 during movement.

[0063] like Figure 5 , Figure 6 As shown, the locking assembly includes an adjustment unit and a locking unit. When the ladder body 201 reaches the required length, the locking unit can lock the relative positions of the first ladder 501 and the second ladder 601, maintaining the ladder body 201 at its current length. Simultaneously, the adjustment unit can drive the locking unit to perform the aforementioned locking operation. When an operator applies force to the adjustment unit, it can move, and the movement of the adjustment unit can cause the locking unit to move as well.

[0064] Furthermore, both the adjustment unit and the snap-fit ​​unit are mounted on the first ladder 501, and the adjustment unit and the snap-fit ​​unit transmit force and movement through the gate line 503. The movement of the adjustment unit drives the snap-fit ​​unit to move under the pulling action of the gate line 503.

[0065] Specifically, the locking unit includes a lock cylinder 502, and the adjusting unit is connected to the lock cylinder 502 via a gate cable 503. Meanwhile, the second ladder 601 is provided with several first locking holes 602, the size of which corresponds to the size of the lock cylinder 502. When the lock cylinder 502 locks the relative position of the first ladder 501 and the second ladder 601, the lock cylinder 502 is inserted into the first locking hole 602; when it is necessary to change the length of the ladder body 201, the lock cylinder 502 is disengaged from the first locking hole 602 by the adjusting unit, thus releasing the lock.

[0066] In some examples, the adjustment unit includes a telescopic control structure 504 and a guide rod 505. The movement of the telescopic control structure 504 drives the lock cylinder 502 to move, and the gate line 503 is connected to the telescopic control structure 504.

[0067] In order to limit the movement direction of the telescopic control structure 504, 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.

[0068] Specifically, a fifth elastic structure is fitted onto the guide rod 505, with its two ends connected to the telescopic control structure 504 and the first ladder 501, respectively. When the worker applies force to the telescopic control structure 504 to make it move, the fifth elastic structure is compressed; when the worker stops applying force, the fifth elastic structure can drive the telescopic control structure 504 to return to its original position.

[0069] like Figure 7As shown, in some examples, the adjustment unit also includes an anti-accidental touch structure 506, which is movably connected to the telescopic control structure 504 and can lock the position of the telescopic control structure 504 by movement.

[0070] The anti-accidental touch structure 506 has a folded edge that covers the telescopic control structure 504 to prevent it from detaching. The anti-accidental touch structure 506 also has a hollow section through which the guide rod 505 passes. The guide rod 505 has a slot; during movement, the edge of the hollow section of the anti-accidental touch structure 506 can engage with the slot, fixing its position and confining the telescopic control structure 504 to its normal position.

[0071] like Figure 8 As shown in the enlarged partial view I, in some examples, the snap-fit ​​unit also includes a snap-fit ​​bracket 507, which is disposed on the first ladder 501, and the lock cylinder 502 is disposed on the snap-fit ​​bracket 507 to stabilize the position of the lock cylinder 502.

[0072] Furthermore, the first ladder 501 is provided with a second locking hole, through which the working end of the lock cylinder 502 passes, and the lock cylinder 502 can move within the range of the second locking hole. When the length of the ladder body 201 has not reached its maximum limit, the working end of the lock cylinder 502 abuts against the inner wall of the second ladder 601; when the length of the ladder body 201 reaches its maximum limit, the working end of the lock cylinder 502 is engaged in the first locking hole 602.

[0073] In some examples, the latching unit further includes a third elastic structure 508, which is sleeved on the lock cylinder 502 and connects the latching bracket 507 and the lock cylinder 502. When the telescopic control structure 504 is not transmitting movement, the third elastic structure 508 continuously pushes the lock cylinder 502, enabling the lock cylinder 502 to automatically latch into the corresponding first latching hole 602.

[0074] like Figure 9 As shown, this application embodiment provides a locking mechanism 100, which includes a mounting bracket 101, a safety switch 202, a trigger structure 301, and a limit component 401.

[0075] Mounting bracket 101 supports safety switch 202, triggering structure 301, and limit assembly 401. Normally, the physical structure of the ladder body 201 is embedded within the locking mechanism 100. When the triggering structure 301 contacts the safety switch 202, 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 footplate portion of the ladder body 201 is embedded within the locking mechanism 100.

[0076] When staff need to use the ladder body 201 to enter the elevator pit, the ladder body 201 is removed from the locking mechanism 100, and the limit component 401 limits the position of the trigger structure 301, causing the trigger structure 301 to disengage from the safety switch 202. The elevator is then in maintenance mode to avoid safety accidents caused by the elevator descending.

[0077] When the staff finishes maintenance using the ladder body 201, the physical structure of the ladder body 201 needs to be re-embedded into the locking mechanism 100, and the trigger structure 301 needs to contact the safety switch 202 again to release the elevator's maintenance mode.

[0078] If the staff leaves the ladder body 201 at the bottom of the elevator, the elevator's maintenance mode cannot be deactivated, thus preventing interference with the ladder body 201 during the elevator's descent.

[0079] like Figure 10 As shown, in some examples, the mounting bracket 101 is set on the elevator shaft wall, and the physical structure of the ladder body 201, when embedded with the locking mechanism 100, can avoid the space for the normal operation of the elevator and prevent the ladder body 201 from interfering with the elevator.

[0080] The safety switch 202 is fixedly connected to the mounting bracket 101, and the trigger structure 301 is movably connected to the mounting bracket 101. During the movement of the trigger structure 301 on the mounting bracket 101, the trigger structure 301 can contact or detach from the safety switch 202.

[0081] Furthermore, the mounting bracket 101 is provided with a receiving space 102, and the limiting component 401 is located within the receiving space 102. Therefore, when the physical structure of the ladder body 201 is embedded in the limiting component 401, the physical structure of the ladder body 201 is also located within the receiving space 102, that is, embedded in the locking mechanism 100.

[0082] Specifically, when the trigger structure 301 needs to contact the safety switch 202, the limit component 401 avoids the movement path of the trigger structure 301; when the trigger structure 301 needs to disengage from the safety switch 202, the limit component 401 blocks the movement path of the trigger structure 301. Thus, the limit component 401 can move and is movably connected within the accommodating space 102.

[0083] In some examples, safety switch 202 is electrically connected to the elevator's control system and is configured as a normally closed switch. When trigger structure 301 contacts safety switch 202, safety switch 202 does not issue commands to the elevator's control system, and the elevator can maintain normal operation; when trigger structure 301 disengages from safety switch 202, safety switch 202 issues commands to the elevator's control system to put the elevator into maintenance mode.

[0084] In some examples, the mounting bracket 101 is provided with a support housing 103, which is used to support the trigger structure 301, and the trigger structure 301 is within the range of the support housing 103.

[0085] The support housing 103 has a positioning hole. The trigger structure 301 extends through the support housing 103 along the positioning hole, thus confining the trigger structure 301 within the range of the positioning hole. This prevents the trigger structure 301 from shaking during movement and ensures movement accuracy. It is understood that during the movement of the trigger structure 301, the length of the trigger structure 301 inside the support housing 103 and the length outside the support housing 103 continuously change.

[0086] In some examples, a second elastic structure 302 is provided on the trigger structure 301, connecting the trigger structure 301 to the support housing 103. The second elastic structure 302 provides a spring force to the trigger structure 301, with the direction of the spring force towards the safety switch 202. When the trigger structure 301 contacts the safety switch 202, the second elastic structure 302 causes the trigger structure 301 to press the safety switch 202 through its spring force; when the trigger structure 301 remains in the position away from the safety switch 202, the second elastic structure 302 contracts to store elastic potential energy, preparing for the trigger structure 301 to press the safety switch 202 again.

[0087] The trigger structure 301 has a protruding portion on its side wall. The second elastic structure 302 is sleeved on the trigger structure 301, and its two ends are connected to the protruding portion of the side wall of the trigger structure 301 and the support housing 103, respectively. Since the position of the support housing 103 is fixed, the second elastic structure 302 can drive the trigger structure 301 to move. Specifically, the second elastic structure 302 is a spring.

[0088] Additionally, the end of the trigger structure 301 furthest from the safety switch 202 has a hanging hole for attaching a lifting rope. When the ladder body 201 needs to be removed from the locking mechanism 100, the lifting rope is first pulled, causing the trigger structure 301 to move a certain distance away from the safety switch 202. This releases the limiting effect of the trigger structure 301 on the limiting component 401. This facilitates the removal of the ladder body 201 while simultaneously keeping the trigger structure 301 at a position away from the safety switch 202.

[0089] like Figure 11 As shown, in some examples, the limit component 401 is disposed between the safety switch 202 and the trigger structure 301, and the limit component 401 is located within the accommodating space 102.

[0090] Furthermore, the limiting component 401 includes a pressure plate 402 and a blocking structure 403 connected to each other. The pressure plate 402 contacts the ladder body 201 and is movable within the accommodating space 102. During the process of the ladder body 201's physical structure being inserted into the locking mechanism 100, the ladder body 201 contacts and presses the pressure plate 402, thereby driving the pressure plate 402 to move. When the ladder body 201's physical structure is removed from the locking mechanism 100, the pressure plate 402 pushes the ladder body 201's physical structure out of the accommodating space 102.

[0091] It is understandable that the movement of the pressure plate 402 causes the blocking structure 403 to move together. During the movement, the blocking structure 403 restricts the triggering structure 301 to a position away from the safety switch 202, or the blocking structure 403 avoids the path of the triggering structure 301 moving towards the safety switch 202.

[0092] In some examples, to prevent the limiting component 401 from deviating from the preset travel path during movement, the pressure plate 402 is provided with a guide structure 404, and the mounting bracket 101 is provided with a guide hole. The guide structure 404 passes through the guide hole and limits the movement of the guide structure 404 within the range of the guide hole.

[0093] A first elastic structure is provided between the pressure plate 402 and the mounting bracket 101, and the first elastic structure is sleeved on the guide structure 404 to ensure the stability of the position of the first elastic structure.

[0094] Furthermore, during the process of the ladder body 201 being embedded in the locking mechanism 100, the ladder body 201 pushes the pressure plate 402 to move, and as the pressure plate 402 moves, the first elastic structure is gradually compressed. When the ladder body 201 is removed from the locking mechanism 100, the first elastic structure gradually extends, and the first elastic structure drives the pressure plate 402 to push the solid structure of the ladder body 201 out of the accommodating space 102.

[0095] It is understandable that if the physical structure of the ladder body 201 is within the stroke range of the pressure plate 402, the pressure plate 402 will always be in contact with the ladder body 201 under the pushing action of the first elastic structure. Specifically, the first elastic structure is a spring.

[0096] In some examples, to prevent the pressure plate 402 from moving beyond its travel, a protruding structure 406 is provided on the guide structure 404. When the pressure plate 402 moves to its limit travel, the protruding structure 406 is locked at the edge of the guide hole outside the accommodating space 102.

[0097] In some examples, the blocking structure 403 will bear the elastic force given by the second elastic structure 302 during the process of blocking the triggering structure 301. In order to avoid the blocking structure 403 from deforming under force, the blocking structure 403 is disposed outside the accommodating space 102 and attached to the surface of the mounting bracket 101. Then the mounting bracket 101 and the blocking structure 403 can jointly bear the elastic force given by the second elastic structure 302.

[0098] Furthermore, the blocking structure 403 and the pressure plate 402 are connected by a connecting structure 407, which can be a fastener. The connecting structure 407 needs to pass through the mounting bracket 101, and the mounting bracket 101 also needs to provide space for the connecting structure 407 to move. Therefore, the mounting bracket 101 is provided with a sliding groove 408, through which the connecting structure 407 passes, and the connecting structure 407 can slide along the sliding groove 408 to match the movement of the pressure plate 402.

[0099] In some examples, the limiting component 401 also includes a baffle 409, which is angled to the pressure plate 402. The baffle 409 and the pressure plate 402 are integrally formed, or the baffle 409 and the pressure plate 402 are separate structures that are then connected.

[0100] Furthermore, the baffle 409 is located within the accommodating space 102, and the baffle 409 is attached to the surface of the mounting bracket 101.

[0101] In some examples, the mounting bracket 101 includes a first support structure 104 and a second support structure 105 connected to each other. The first support structure 104 is generally formed as a bent plate structure, and the first support structure 104 and the second support structure 105 form an accommodating space 102.

[0102] The trigger structure 301 is disposed on the first support structure 104, the safety switch 202 is disposed on the second support structure 105, and the accommodating space 102 is located between the trigger structure 301 and the safety switch 202. Furthermore, the first support structure 104, the baffle 409, and the second support structure 105 are all provided with through holes 410, so that the trigger structure 301 needs to pass through the accommodating space 102 and each through hole 410 during the process of contacting the safety switch 202.

[0103] Specifically, under normal conditions, the physical structure of the ladder body 201 is embedded in the locking mechanism 100, the trigger structure 301 passes through each through hole 410 and contacts the safety switch 202, and the physical structure of the ladder body 201 is confined within the space between the trigger structure 301 and the pressure plate 402, allowing the elevator to operate normally. At this time, because the blocking structure 403 abuts against the trigger structure 301, and the inner wall of the through hole 410 abuts against the trigger structure 301, the trigger structure 301 also limits the position of the limiting component 401.

[0104] When the ladder body 201 needs to be removed, the trigger structure 301 is pulled, disengaging from the safety switch 202, and the elevator's maintenance mode is activated. The trigger structure 301 moves out of the receiving space 102 along each through hole 410, releasing the limiting effect of the trigger structure 301 on the limiting component 401. The limiting component 401 then moves as a whole, blocking the movement path of the trigger structure 301 and maintaining it in the position disengaged from the safety switch 202. Simultaneously, with the movement of the limiting component 401, it pushes the ladder body 201 away from the locking mechanism 100.

[0105] When the ladder body 201 is finished using, it needs to be re-engaged with the locking mechanism 100. The physical structure of the ladder body 201 contacts and pushes the pressure plate 402 in the accommodating space 102. During the movement of the limiting component 401, the through holes 410 gradually form a corresponding positional relationship so that the limiting component 401 avoids the movement path of the trigger structure 301. Under the action of the second elastic structure 302, the trigger structure 301 contacts the safety switch 202 again to release the elevator's maintenance mode.

[0106] like Figure 12 As shown, in some examples, the trigger structure 301 and the safety switch 202 in the locking mechanism 100 are distributed vertically, and the pedal part of the ladder body 201 can be removed or inserted into the locking mechanism 100 in a horizontal direction to open or close the elevator's maintenance mode.

[0107] like Figure 13 As shown, in some examples, the ladder system also includes a bypass switch, which, together with the locking mechanism 100, forms dual control over the elevator maintenance mode.

[0108] When the trigger structure 301 moves upward to disengage from the safety switch 202, the safety switch 202 is opened. At this time, if the bypass switch is closed, the maintenance mode is closed; if the bypass switch is open, the maintenance mode is opened.

[0109] When the trigger structure 301 moves down to contact the safety switch 202, the safety switch 202 is closed. At this time, regardless of whether the bypass switch is open or closed, the maintenance mode is closed, thus forming dual control.

[0110] Furthermore, the bypass switch is equipped with an indicator light. When the bypass switch is closed, the indicator light illuminates to inform staff of the current elevator status. When the bypass switch is open, the indicator light turns off.

[0111] In the description of this specification, the use of terms such as "an embodiment," "some examples," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" indicates that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0112] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A ladder climbing system, characterized in that, include: The ladder body includes a first ladder and a second ladder. The second ladder has a sliding space inside, and the first ladder can slide within the sliding space to increase or decrease the length of the ladder body. The steps of the second ladder have hollow portions. When the steps of the second ladder and the steps of the first ladder are interlocked, the relative positions of the first ladder and the second ladder can be locked so that the distance between adjacent steps is the same when the ladder body is of different lengths. A snap-fit ​​assembly, comprising an adjustment unit and a snap-fit ​​unit, both disposed on the first ladder, wherein the snap-fit ​​unit includes a lock cylinder, and the adjustment unit and the lock cylinder are connected via a gate cable; The second ladder is provided with a plurality of first locking holes. The adjustment unit moves and drives the lock cylinder to move together through the brake line, so that the lock cylinder can be inserted into or disengaged from the first locking holes. The ladder system also includes a locking mechanism, which includes a safety switch, a triggering structure and a limit component. The safety switch can be electrically connected to the elevator control system. The triggering structure can contact or disengage from the safety switch. When the triggering structure disengages from the safety switch, the elevator is put into maintenance mode. The triggering structure contacts the safety switch to release the elevator from maintenance mode. The triggering structure has a second elastic structure. A limiting component is located between the safety switch and the triggering structure. The solid structure of the ladder body is embedded in the space between the limiting component and the triggering structure. The limiting component moves to avoid the path of the triggering structure contacting the safety switch. The solid structure of the ladder body moves out of the limiting component, and the limiting component moves to prevent the triggering structure from contacting the safety switch. The locking mechanism also includes a mounting bracket, which can be mounted on the elevator shaft wall. The safety switch is fixedly connected to the mounting bracket, and the triggering structure is movably connected to the mounting bracket. The limiting component includes a pressure plate and a blocking structure connected to each other. The mounting bracket has an accommodating space. The blocking structure is located outside the accommodating space and attached to the surface of the mounting bracket so that the mounting bracket and the blocking structure jointly bear the elastic force provided by the second elastic structure. A first elastic structure is provided between the pressure plate and the mounting bracket.

2. The ladder system according to claim 1, characterized in that, The adjustment unit includes a telescopic control structure and a guide rod. The gate cable is connected to the telescopic control structure. A guide rod is provided between the telescopic control structure and the first ladder. The telescopic control structure can move along the guide rod.

3. The ladder system according to claim 2, characterized in that, The adjustment unit also includes an anti-accidental touch structure, which is movably connected to the telescopic control structure. The guide rod is provided with a slot, and the anti-accidental touch structure can move on the telescopic control structure to engage with the slot.

4. The ladder system according to claim 1, characterized in that, The latching unit further includes a latching bracket disposed on the first ladder, the lock cylinder is disposed on the latching bracket, the first ladder is provided with a second latching hole, and the working end of the lock cylinder can pass through the second latching hole and latch into the first latching hole.

5. The ladder system according to claim 4, characterized in that, The snap-fit ​​unit also includes a third elastic structure, which is sleeved on the lock cylinder, and the two ends of the third elastic structure are respectively connected to the snap-fit ​​bracket and the lock cylinder.

6. The ladder system according to claim 1, characterized in that, The second ladder is provided with an upper limit mechanism, and the first ladder is provided with a limit hole. The upper limit mechanism can be embedded in the limit hole to limit the maximum length of the ladder body.

7. The ladder system according to claim 6, characterized in that, The upper limit mechanism includes a housing disposed on the second ladder and a slider disposed inside the housing. The end of the slider is provided with a roller, and the slider can slide inside the housing. The slider and the housing are connected by a fourth elastic structure. When the upper limit mechanism passes through the limiting hole, the fourth elastic structure drives the slider and the roller to embed into the limiting hole.

8. The ladder system according to claim 1, characterized in that, The climbing system also includes a bypass switch, which, together with the locking mechanism, can control the opening or closing of the elevator maintenance mode; When the triggering structure contacts the safety switch, the elevator's maintenance mode is turned off; The triggering structure disengages from the safety switch, and the bypass switch is activated, thus disabling the elevator's maintenance mode. When the triggering structure disengages from the safety switch and the bypass switch is disconnected, the elevator's maintenance mode is activated.

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