Locking seat structure, trigger type locking structure and lifting platform

Abstract

According to the locking seat structure provided by the utility model, a connecting rotating shaft is arranged on a locking seat, and a plurality of penetrating holes are formed in the side, corresponding to the connecting rotating shaft, of the locking seat; each penetrating hole is parallel to the axial direction of the connecting rotating shaft; the locking seat is connected with a movable locking piece, the movable locking piece comprises a driving rod connected to the penetrating hole in a penetrating mode, the end, close to one side of the connecting rotating shaft, of the driving rod is connected with a locking block, and the driving rod is connected with an elastic assembly between the locking block and the locking seat; and a limiting piece is arranged at the other end part of the driving rod. Through the structure arrangement of the locking seat, under the linkage application of the structure, the movable locking piece arranged on the locking seat can stably realize the locking and positioning of the locking plate turning and rotating to the locking state along with triggering in the trigger type locking structure applying the movable locking piece. The anti-falling trigger locking device is simple in design structure and high in reliability, and a trigger type locking structure applying the anti-falling trigger locking device has the characteristics of triggering, locking and anti-falling functions in the application of a lifting platform.

Description

Technical Field

[0001] This utility model relates to the technical field of anti-fall protection design for lifting devices, specifically a locking seat structure, a trigger-type locking structure, and a lifting platform. Background Technology

[0002] In the field of modern engineering machinery, ensuring the safety of equipment operation is paramount. Preventing accidents caused by rope breakage is a key issue, leading to the development of rope breakage locking protection devices. Ratchet caliper type is a common rope breakage protection technology. The core principle of this type of device utilizes the one-way locking characteristic of a ratchet. A ratchet typically consists of a series of teeth, and the caliper that engages with it allows the rope to pass smoothly through the ratchet during normal operation. However, once the rope breaks, the caliper quickly locks the ratchet, preventing further movement of the equipment and thus providing protection. This type of device is commonly used in elevators, hoists, and similar equipment.

[0003] The ratchet caliper-type rope breakage protection solution has the disadvantages of complex structure, high design precision, and low adaptability. For the new type of lifting platform used in piling vessels, how to design a new rope breakage locking protection device with a simpler structure, higher adaptability, and economic rationality is a technical problem that the industry urgently needs to solve. Utility Model Content

[0004] The purpose of this utility model is to provide a locking seat structure so that the trigger-type locking structure using it can effectively lock and position the locking block during the breakage process of the lifting rope in the application of the lifting platform, thereby realizing the application of anti-fall protection technology for the lifting platform; at the same time, the trigger-type locking structure using this locking seat structure has the characteristics of simple structure and high installation adaptability, which meets its comprehensive application in offshore lifting platforms.

[0005] A locking seat structure is provided, wherein a connecting shaft is provided on the locking seat, and a plurality of through holes are provided on the locking seat corresponding to the side of the connecting shaft; each of the through holes is arranged parallel to the axial direction of the connecting shaft; a movable locking member is connected to the locking seat, the movable locking member includes a drive rod passing through the through holes, a locking block is connected to the end of the drive rod near the connecting shaft, and an elastic component is connected between the drive rod and the locking seat; a limiting member is provided at the other end of the drive rod.

[0006] Furthermore, it includes a first sidewall and a second sidewall arranged vertically side by side, a locking baffle is provided at the rear position between the first sidewall and the second sidewall, and the connecting shaft is located at the rear position of the space enclosed between the first sidewall, the second sidewall, and the locking baffle.

[0007] Furthermore, each of the through holes is located at the first side wall position, the locking block is plate-shaped, a drive rod is passed through each of the through holes, the ends of the multiple drive rods are connected to one side plate of the locking block, and multiple elastic components are disposed between one side plate of the locking block and each drive rod.

[0008] Furthermore, a limiting component is provided at the other end of the drive rod, and the outer diameter of the limiting component is larger than that of the through hole.

[0009] Furthermore, a reset hole is provided on the locking seat, and a reset rod is horizontally extended on one side plate of the locking block corresponding to the reset hole. The reset rod passes through the reset hole, and a gripping structure for user gripping is provided at the end of the reset rod away from the locking block.

[0010] Furthermore, it also includes a positioning baffle disposed on the upper side of the locking block, the positioning baffle extending horizontally and being parallel to each other in the axial direction of the through holes.

[0011] A trigger-type locking structure includes: a locking plate, comprising a plate body, one end of which has a latching position on its lower side, and the other end of which has a rotating interface; a locking seat as described above, wherein the connecting shaft passes through the rotating interface to allow the locking plate to be rotatably connected to the locking seat; in application, the locking plate includes an unlocked state in one rotational position and a locked state in another rotational position, wherein in the unlocked state, the height of one end of the locking plate is higher than that in the locked state; when the locking plate is in the unlocked state, the position of the locking plate limits the pushing movement of the locking block, and the elastic component has elastic potential energy; when the locking plate is in the locked state, the position of the locking plate rotates to avoid and release the limitation on the locking block, the elastic potential energy of the elastic component is released, causing the locking block to push out and lock the locking plate, thereby locking the position of the locking plate.

[0012] Furthermore, the center of gravity of the locking plate is offset at one end; when the locking plate is in the unlocked state, due to the offset of the center of gravity of the locking plate, the locking plate has a rotational tendency to rotate around the connecting shaft to the locked state.

[0013] Furthermore, an elastic connector is connected between the locking seat and the locking plate. In the application of the locking plate, when the locking plate is in an unlocked state, the locking plate has a rotational tendency to rotate around the connecting axis to the locked state under the elastic potential energy of the elastic connector.

[0014] A lifting platform includes: a platform support extending vertically and including a vertical guide rail, with positioning beams spaced apart on one side of the vertical guide rail; a mounting frame for positioning and assembling the movable platform, the mounting frame having guide pulleys for slidably connecting to the vertical guide rail; the mounting frame having a main rope connection position and a trigger-type locking structure as described above; a lifting drive device, which extends vertically downward from the upper end of the platform support to connect a main rope, the end of the main rope being connected to the main rope connection position, and a connecting auxiliary rope extending from the end of the main rope, the end of the auxiliary rope being connected to the auxiliary rope connection position; the main rope... When the connecting auxiliary rope is connected to the mounting frame, the connecting auxiliary rope exerts an upward lifting force on the locking plate, causing the locking plate to be in an unlocked state. When the connecting main rope is disconnected from the lifting drive device, the connecting auxiliary rope loses its connection support to the connecting main rope and loses its lifting force on the locking plate, causing the locking plate to flip and rotate to the locked state. This causes the locking plate to move towards the positioning beam, allowing the buckle to engage with the positioning beam. The movable locking member positions and limits the locking plate, and the limiting engagement is engaged with the trigger-type locking structure of the positioning beam, causing the movable platform to be positioned and stopped on the platform support.

[0015] The beneficial effects of this utility model are as follows:

[0016] Through a locking seat structure, under the linkage application of the structure, the movable locking member on the locking seat can stably lock and position the locking plate to the locked state as it flips and rotates upon triggering in the trigger-type locking structure. Its design is simple and highly reliable, enabling the trigger-type locking structure using it to have the function of trigger-locking and fall prevention in lifting platform applications. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the application structure of the lifting platform of this utility model in the non-locking state of its trigger-type locking structure;

[0018] Figure 2 This is a schematic diagram of the application structure of the lifting platform of this utility model in the locked state of its trigger-type locking structure;

[0019] Figure 3 This is a schematic diagram illustrating the non-locking state application of the trigger-type locking structure of the locking seat structure of this utility model;

[0020] Figure 4 This is a schematic diagram illustrating the locking state of the trigger-type locking structure of the locking seat structure of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] Trigger-type locking structure 1.

[0023] Locking plate 2, latching position 21, buffer pad 211, rotating interface 22, limiting block 23, abutting end face 231, first latching position 24, limiting inclined surface 25.

[0024] Locking seat 3, connecting shaft 31, elastic connector 32, through hole 33, reset hole 34, second latch 35, first side wall 361, second side wall 362, locking baffle 363, enclosing space 364, positioning baffle 37.

[0025] 4. Movable locking connector; 41. Locking block; 42. Elastic component; 43. Drive rod; 44. Limiting component; 45. Reset rod; 46. Grip structure.

[0026] Platform support 100, vertical guide rail 101, positioning beam 102

[0027] Assembly frame 200, vertical section of support 201, horizontal section of support 202, platform assembly position 203, main rope connection position 204, auxiliary rope connection position 205, guide pulley 206.

[0028] Connect the main rope 301 and the auxiliary rope 302. Detailed Implementation

[0029] To make the technical solution, purpose and advantages of this utility model clearer, the following explanation is given in conjunction with the accompanying drawings and embodiments.

[0030] like Figures 1 to 4 As shown, this utility model discloses a lifting platform with a trigger-locking anti-fall function, which includes a vertically arranged platform support 100. A lifting drive device is mounted on the platform support 100, and a mounting frame 200 is movably mounted on the platform support 100. The movable platform is positioned and mounted on the mounting frame. A lifting rope is provided at the drive end of the lifting drive device to bind the mounting frame 200. Under the drive of the lifting drive device, the mounting frame 200 can drive the movable platform to perform lifting drive movement along the movable guide of the platform support 100.

[0031] The mounting frame 200 and the platform support 100 are equipped with a trigger-type locking structure 1. When the lifting drive device suddenly fails and the movable platform falls, the trigger-type locking structure 1 locks between the platforms, thereby linking the movable platform to the platform support 100 for positioning and stopping.

[0032] Example 1:

[0033] This embodiment describes a specific lifting platform structure.

[0034] The platform support 100 extends vertically and includes at least two vertical guide rails 101 on both sides, with multiple positioning beams 102 arranged at intervals between the two vertical guide rails 101.

[0035] The mounting frame 200 is provided with two vertical support sections 201 on both sides. Guide pulleys 206 are provided on the two vertical support sections 201 to slide and connect to the two vertical guide rails 101 on both sides, so as to meet the sliding and lifting application of the mounting frame 200 in conjunction with the movable platform. The side of the two vertical support sections 201 away from the platform support 100 is provided with a platform mounting position 203 for mounting the movable platform. A support horizontal section 202 is provided between the two vertical support sections 201. A main rope connection position 204 is provided in the center of the support horizontal section 202 for binding the main rope 301 of the lifting rope. The trigger-type locking structure 1 is provided on both sides of the main rope connection position 204, and the auxiliary rope connection position 205 is provided on the trigger-type locking structure 1 for binding the auxiliary rope 302 of the lifting rope.

[0036] The lifting drive device has a connecting main rope 301 extending vertically downward from the upper end of the platform support 100. The end of the connecting main rope 301 is connected to the main rope connection position 204, thus completing the connection of the lifting rope to the lifting drive device and the mounting frame 200.

[0037] At the end of the main rope 301 (near the main rope connection position 204), two connecting auxiliary ropes 302 are extended on both sides, and the ends of the connecting auxiliary ropes 302 on both sides are connected to the auxiliary rope connection positions 205 on both sides. In the state of the lifting rope binding connection to the assembly frame 200, the main rope 301 provides the main lifting force to the assembly frame 200, and the connecting auxiliary ropes 302 on both sides have a certain upward lifting force on the trigger-type locking structure 1 on both sides.

[0038] In application, when the main connecting rope 301 breaks off from the lifting drive device, the movable platform falls due to the main lifting force. At this time, the auxiliary connecting ropes 302 on both sides lose their connection support from the main connecting rope 301 and lose the lifting force, causing the trigger-type locking structures 1 on both sides to move towards the positioning beam 102. The positioning beam 102 engages with the trigger-type locking structure 1 to position the movable platform to the platform support 100, stopping the fall.

[0039] In this embodiment, the trigger-type locking structure 1 is symmetrically arranged on both sides of the main rope connection position 204. During the descent, the trigger-type locking structures 1 on both sides can simultaneously lock the positioning beam 102, ensuring the stability of the moving platform positioning between the platform in the case of a rapid descent.

[0040] Example 2:

[0041] Based on the application of the lifting platform in Embodiment 1, this embodiment further explains the specific settings of a trigger-type locking structure 1.

[0042] The trigger-type locking structure 1 includes:

[0043] Locking plate 2, one end of which has a snap-fit ​​position 21 and the other end is provided with a rotating interface 22.

[0044] A locking seat 3 is provided with a connecting shaft 31, which passes through the rotating interface 22 to rotatably connect the locking plate 2 to the locking seat 3. An elastic connector 32 connects the locking seat 3 and the locking plate 2. In application, the locking plate 2 includes an unlocked state in one rotational position and a locked state in another rotational position. When the locking plate 2 is in the unlocked state, it has a rotational tendency to rotate around the connecting shaft 31 to the locked state under the elastic potential energy of the elastic connector 32.

[0045] A movable locking member 4 is disposed on the locking seat 3. The movable locking member 4 includes a locking block 41 disposed near the locking plate 2, and the locking block 41 is connected to an elastic component 42. When the locking plate 2 is in the unlocked state, the position of the locking plate 2 limits the pushing movement of the locking block 41, and the elastic component 42 has elastic potential energy. When the locking plate 2 is in the locked state, the position of the locking plate 2 rotates to avoid and release the limitation on the locking block 41. The elastic potential energy of the elastic component 42 is released, causing the locking block 41 to push out and lock against the locking plate 2, thus locking the position of the locking plate 2. The movable locking member 4 positions and limits the locking plate 2.

[0046] Its application principle is as follows:

[0047] The locking seat 3 is positioned and assembled with the mounting frame 200 to form the trigger-type locking structure 1 integrally mounted on the mounting frame 200. The locking plate 2 is provided with a secondary rope connection position 205 for connecting and binding the secondary rope 302. When the main connecting rope 301 and the secondary connecting rope 302 are connected to the mounting frame 200, the secondary connecting rope 302 exerts an upward pulling force on the locking plate 2, causing the locking plate 2 to be in an unlocked state.

[0048] When the main connecting rope 301 breaks off from the lifting drive device, the auxiliary connecting rope 302 loses its connection support to the main connecting rope 301 and loses its lifting force on the locking plate 2. This causes the locking plate 2 to rotate under the elastic potential energy of the elastic connector 32, reaching a locked state. The locking plate 2 then moves towards the positioning beam 102, causing the latch 21 to engage with the positioning beam 102. In the locked state, the locking plate 2 is restricted by the movable locking member 4, and the locking plate 2 is locked relative to the locking seat 3, maintaining the locked state. The locked plate 2, locked during descent, will then engage with the positioning beam 102, causing the movable platform to stop on the platform support 100. This achieves the application of using a trigger-type locking structure 1 to position the movable platform between platforms during descent.

[0049] As a preferred structural configuration, in the design of the locking plate 2, the latching position 21 is located on the lower side of one end of the locking plate 2; the width of the latching position 21 is extended to be greater than the thickness of the locking plate 2, so that it can better latch and cooperate with the positioning beam 102; a buffer pad 211 is provided on the inner side of the latching position 21, so that when the locking plate 2 is locked and fastened to the positioning beam 102, the hard impact is reduced, and the structural damage caused by excessive force generated by the fall during locking and positioning is avoided. The auxiliary rope connection position 205 is provided on the upper side of one end of the locking plate 2. In this embodiment, the center of gravity of the locking plate 2 is offset at one end position (the position of the auxiliary rope connection position 205); when the locking plate 2 is connected to the connecting shaft 31 through the rotating interface 22, the locking plate 2 with the center of gravity offset has a rotational tendency to rotate around the shaft and flip downward to the locked state.

[0050] In this embodiment, the locking seat 3 is preferably configured as follows: it includes a first sidewall 361 and a second sidewall 362 arranged vertically side by side, a locking baffle 363 is provided at the rear position between the first sidewall 361 and the second sidewall 362, and the connecting shaft 31 is located at the rear position of the enclosed space 364 between the first sidewall 361, the second sidewall 362 and the locking baffle 363.

[0051] The locking seat 3 has multiple through holes 33 on the side corresponding to the connecting shaft 31, and each through hole 33 is located at the position of the first side wall 361; each through hole 33 is arranged parallel to the axial direction of the connecting shaft 31; the locking movable component includes a drive rod 43 passing through each through hole 33, and one end of the drive rod 43 near the side of the connecting shaft 31 is connected to the locking block 41. The locking block 41 is plate-shaped, and each through hole 33 has a drive rod 43 passing through it. The ends of the multiple drive rods 43 are connected to one side plate of the locking block 41. The pushing direction of the locking block 41 is perpendicular to the flipping and rotating direction of the locking plate 2; the drive rod 43 connects the elastic component 42 between the locking block 41 and the locking seat 3; the multiple elastic components 42 are disposed between one side plate of the locking block 41 and each drive rod 43. When the locking plate 2 is in the unlocked state, the locking plate 2 is pushed against the locking block 41 by the plate surface on the side of the locking movable member, which limits the movement of the locking plate 2.

[0052] Specifically, a limiting block 23 is provided on the lower part of the side of the locking plate 2 near the rotating interface 22, which is close to the side of the locking movable part. The limiting block 23 is generally L-shaped, and a horizontal abutment end surface 231 is formed on its upper side.

[0053] When the locking plate 2 is in the unlocked state, the limiting block 23 on the plate surface pushes the locking block 41 to a limit; when the locking plate 2 is in the locked state, the limiting block 23 is under the pushed-out locking block 41, and the lower end of the locking block 41 forms a locking limit with the abutting end face 231 of the limiting block 23, thereby locking the position of the locking plate 2.

[0054] To meet the application requirements of the reusable trigger-type locking structure 1, in the structural application of the locking movable part in the above embodiment 2, a limiting component 44 is provided at the other end of the drive rod 43. The outer diameter of the limiting component 44 is larger than that of the through hole 33. This prevents the drive rod 43 from passing through the locking seat 3 towards the locking plate 2 during application, thus avoiding structural separation. Furthermore, a reset hole 34 is provided on the locking seat 3, and a reset rod 45 extends horizontally on one side of the locking block 41 corresponding to the reset hole 34. The reset rod 45 passes through the reset hole 34, and a gripping structure 46 for user gripping is provided at the end of the reset rod 45 away from the locking block 41.

[0055] When resetting the lifting platform, first, the new connecting main rope 301 is re-attached to the lifting drive device in the main rope connection position 204. Then, the locking block 41, which is used to drive the reset rod 45 by holding the gripping structure 46, is reset to the side away from the locking plate 2, so that the elastic component 42 regains its elastic potential energy. The reset locking block 41 releases the locking restriction on the locking plate 2, so the user can flip the locking plate 2 fastened to the platform bracket 100 to release the fastening, so that the locking plate 2 is in an unlocked state. Then, the new connecting auxiliary rope 302 is attached, thus completing the reset application of the trigger-type locking structure 1 in the lifting platform.

[0056] To further ensure the structural support and locking stability of the locking plate 2 during application, in this embodiment, the locking seat preferably includes a positioning baffle 37 disposed on the upper side of the locking block 41. The positioning baffle 37 extends horizontally and is parallel to each other in the axial direction of the through holes 33. In the locked state of the locking plate 2, the locking plate 2 drops down and engages with the positioning beam 102. The extended locking block 41 locks and positions the locking plate 2, and the positioning baffle 37 limits and blocks the upper side of the locking block 41, further supporting the locking block 41 and preventing the driving rod 43 from breaking under force, thus avoiding damage to the locking structure.

[0057] In this embodiment, there are eight drive rods 43, which are evenly distributed on one end face of the locking block 41, so that the locking block 41 has a better impact resistance.

[0058] The upper side of one end of the locking plate 2 has an upwardly inclined limiting slope 25 from the rotating interface 22 to the middle section of the locking plate 2; the locking baffle 36 vertically arranged on the rear side of the locking seat 3 cooperates with the limiting slope 25. When the locking plate 2 is in the unlocked state, the limiting slope 25 abuts against the inner side of the locking baffle 36, and the locking baffle 36 limits the unlocked state of the locking plate 2.

[0059] To further ensure that the locking plate 2 can better flip downwards and engage with the platform support 100 when the lifting rope breaks, a first latch 24 is provided on the side of the locking plate 2 away from the locking movable part. On the locking seat 3, a second latch 35 is provided on the inner side of the third sidewall 361 corresponding to the flipped-down position of the locking plate 2. The elastic connector 32 includes a spring connector connecting the first latch 24 and the second latch 35. In application, the height of one end of the locking plate 2 is higher in the unlocked state than in the locked state. Under the elastic potential energy of the elastic connector 32, the locking plate 2 has a tendency to rotate downwards around the connecting shaft 31.

[0060] The above description is only a preferred embodiment of the present utility model. For those skilled in the art, modifications can still be made to the embodiments without departing from the implementation principle of the present utility model, and the corresponding modifications should also be considered within the protection scope of the present utility model.

Claims

1. A locking seat structure, characterized in that, The locking seat is provided with a connecting shaft, and the locking seat is provided with a plurality of through holes on the side corresponding to the connecting shaft; each of the through holes is arranged parallel to the axial direction of the connecting shaft. The locking seat is connected to a movable locking member, which includes a drive rod that passes through the through hole. The end of the drive rod that is close to the connecting shaft is connected to a locking block. An elastic component is connected between the drive rod and the locking seat. A limiting member is provided at the other end of the drive rod.

2. The locking seat structure as described in claim 1, characterized in that, It includes a first sidewall and a second sidewall arranged vertically side by side, a locking baffle is provided at the rear position between the first sidewall and the second sidewall, and the connecting shaft is located at the rear position of the space enclosed between the first sidewall, the second sidewall and the locking baffle.

3. The locking seat structure as described in claim 2, characterized in that, Each of the aforementioned through holes is located at the first side wall position. The locking block is configured as a plate shape. A drive rod is passed through each of the aforementioned through holes. The ends of the plurality of drive rods are connected to one side plate surface of the locking block. A plurality of elastic components are disposed between one side plate surface of the locking block and each of the aforementioned drive rods.

4. The locking seat structure as described in claim 2, characterized in that, A limiting component is provided at the other end of the drive rod, and the outer diameter of the limiting component is larger than that of the through hole.

5. The locking seat structure as described in claim 3, characterized in that, The locking seat is provided with a reset hole, and a reset rod is provided horizontally on one side plate of the locking block corresponding to the reset hole. The reset rod passes through the reset hole, and a grip structure for user grip is provided at the end of the reset rod away from the locking block.

6. The locking seat structure as described in any one of claims 1 to 5, characterized in that, It also includes a positioning baffle disposed on the upper side of the locking block, the positioning baffle being horizontally extended and parallel to each other in the axial direction of the through holes.

7. A trigger-type locking structure, characterized in that, include: A locking plate includes a plate body, one end of which has a snap-fit ​​position on its lower side, and the other end of which has a rotating interface; The locking seat as described in any one of claims 1 to 6, wherein the connecting shaft passes through the rotating interface to allow the locking plate to be rotatably connected to the locking seat; In the application of the locking plate, it includes an unlocked state at one rotational position and a locked state at another rotational position. In the unlocked state, the height of one end of the locking plate is set higher than that of the locked state. When the locking plate is in the unlocked state, the position of the locking plate limits the pushing movement of the locking block, and the elastic component has elastic potential energy; when the locking plate is in the locked state, the position of the locking plate rotates to avoid and releases the limitation on the locking block, the elastic potential energy of the elastic component is released, causing the locking block to push out and block the locking plate, thereby locking the position of the locking plate.

8. The trigger-type locking structure as described in claim 7, characterized in that, The center of gravity of the locking plate is offset at one end; when the locking plate is in the unlocked state, due to the offset of the center of gravity of the locking plate, the locking plate has a rotational tendency to rotate around the connecting shaft to the locked state.

9. The trigger-type locking structure as described in claim 7, characterized in that, An elastic connector is connected between the locking seat and the locking plate. In the application of the locking plate, when the locking plate is in an unlocked state, the locking plate has a rotational tendency to rotate around the connecting axis to the locked state under the elastic potential energy of the elastic connector.

10. A lifting platform, characterized in that, include: A platform support extending vertically includes a vertical guide rail, with positioning beams spaced apart on one side of the vertical guide rail; A mounting frame for positioning and assembling an active platform, wherein the mounting frame is provided with guide pulleys for sliding connection to the vertical guide rail; the mounting frame is provided with a main rope connection position and a trigger-type locking structure as described in any one of claims 7 to 9; A lifting drive device has a connecting main rope extending vertically downward from the upper end of the platform support. The end of the connecting main rope is connected to the main rope connection position. A connecting auxiliary rope extends from the end of the connecting main rope and is connected to the auxiliary rope connection position. When the connecting main rope and the connecting auxiliary rope are connected to the mounting frame, the connecting auxiliary rope has an upward lifting force on the locking plate, so that the locking plate is in an unlocked state. When the main connecting rope breaks off from the lifting drive device, the auxiliary connecting rope loses its connection support to the main connecting rope and loses its lifting force on the locking plate, causing the locking plate to flip and rotate to the locked state. This causes the locking plate to move towards the positioning beam, allowing the buckle to engage with the positioning beam. The movable locking member positions and limits the locking plate, and the limiting engagement is engaged with the trigger-type locking structure of the positioning beam, causing the movable platform to stop on the platform support.

Images