Locking plate structure, trigger type locking structure and lifting platform

Abstract

According to the locking plate structure provided by the utility model, the lower side of one end of the locking plate is provided with the buckle position, and the upper side of one end of the locking plate is provided with the auxiliary rope connecting position; a rotating interface is arranged at the other end of the locking plate; the center of gravity of the locking plate shifts from one end of the locking plate; when the locking plate is connected to the connecting rotating shaft in a penetrating mode through the rotating connector, the locking plate with the center of gravity shifted has the rotating trend that one end of the locking plate turns downwards around the rotating shaft. Through the arrangement of the locking plate structure, under the linkage application of the structure, the locking plate has gravity center shift, so that the locking plate can be stably overturned and rotated to a locking state along with triggering in a triggering type locking structure applying the locking plate structure, and the function application of controlling locking is completed through the matching positioning of the movable locking piece. The anti-falling device is simple in design structure and high in reliability, and the lifting platform applying the anti-falling device has the characteristics of triggering, locking and anti-falling functions.

Description

Technical Field

[0001] This utility model relates to the technical field of fall protection design for lifting devices, specifically a locking plate 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 invention is to provide a locking plate structure that effectively protects against falls during the breakage of lifting ropes in the application of a trigger-type locking structure in a lifting platform. Simultaneously, this locking plate structure provides a simple structure and high installation adaptability, meeting the requirements for comprehensive application in offshore lifting platforms.

[0005] A locking plate structure is provided, wherein a buckle is provided on the lower side of one end of the locking plate, and a secondary rope connection is provided on the upper side of one end of the locking plate; a rotating interface is provided on the other end of the locking plate; the center of gravity of the locking plate is offset at one end; when the locking plate is connected to the connecting shaft through the rotating interface, the locking plate with its center of gravity offset has a rotational tendency to rotate around the shaft so that one end of it flips downward.

[0006] Furthermore, the locking plate is narrowed in height from one end to the other so that its center of gravity is shifted to one end.

[0007] Furthermore, the upper side of one end of the locking plate has an upwardly inclined limiting slope from the rotating interface to the middle section of the locking plate.

[0008] Furthermore, the upper part of the middle section of the locking plate extends to one end in an L-shaped plate shape, forming the buckle position on the lower side of one end of the locking plate; the width of the buckle position extends beyond the thickness of the locking plate, and a buffer pad is provided on the inner side of the buckle position.

[0009] Furthermore, a circular hole is provided in the L-shaped bend at one end of the locking plate as the connection point for the auxiliary rope.

[0010] Furthermore, a limiting block is provided on the outer periphery of the locking plate at the rotating interface.

[0011] Furthermore, the limiting block is L-shaped in general, with a horizontally set abutting end face on its upper side.

[0012] A trigger-type locking structure includes: a locking plate as described above; a locking seat, on which a connecting shaft is provided, the connecting shaft passing 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 at one rotational position and a locked state at another rotational position, wherein the height of one end of the locking plate in the unlocked state is higher than that of one end of the locking plate in the locked state; when the locking plate is in the unlocked state, due to the shift 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; and a movable locking member, which positions and limits the locking plate when it rotates to the locked state.

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

[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, with guide pulleys on the mounting frame for sliding connection to the vertical guide rail; a main rope connection position and the aforementioned trigger-type locking structure on the mounting frame; and a lifting drive device extending vertically downward from the upper end of the platform support to connect a main rope, the end of which is connected to the main rope connection position, and a connecting auxiliary rope extending from the end of the main rope, the end of which is connected to the auxiliary rope connection position. When the main connecting rope and the auxiliary connecting rope are connected to the mounting frame, the auxiliary connecting rope exerts an upward lifting force on the locking plate, keeping the locking plate 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. This causes the locking plate to flip and rotate to a locked state due to its center of gravity shift, moving the locking plate toward the positioning beam. The buckle engages with the positioning beam, and the trigger-type locking structure engages with the positioning beam, causing the movable platform to stop on the platform support.

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

[0016] By designing a locking plate structure, under the linkage of the structure, the locking plate has a center of gravity offset, which allows it to stably rotate and flip to the locked state in the trigger-type locking structure. The locking plate is then positioned and controlled by a movable locking connector. Its design is simple, highly reliable, and enables the lifting platform using it to have trigger-locking anti-fall functionality. 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 plate structure of this utility model;

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

[0021] Figure 5 This is a schematic diagram of the structural configuration of the locking plate of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] Trigger-type locking structure 1.

[0024] 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.

[0025] Locking seat 3, connecting shaft 31, elastic connector 32, through hole 33, reset hole 34, second latching position 35, locking baffle 36.

[0026] 4. Movable locking connector; 41. Locking block; 42. Elastic component; 43. Drive rod; 44. Limiting component; 45. Reset rod; 46. Grip structure.

[0027] Platform support 100, vertical guide rail 101, positioning beam 102

[0028] 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.

[0029] Connect the main rope 301 and the auxiliary rope 302. Detailed Implementation

[0030] 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.

[0031] like Figures 1 to 5 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.

[0032] 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.

[0033] Example 1:

[0034] This embodiment describes a specific lifting platform structure.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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 mounting frame 200, the main rope 301 provides the main lifting force to the mounting 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.

[0039] 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.

[0040] 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.

[0041] Example 2:

[0042] 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.

[0043] The trigger-type locking structure 1 includes:

[0044] Locking plate 2, one end of which has a snap-fit ​​position 21 and the other end is provided with a rotating interface 22.

[0045] 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.

[0046] 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.

[0047] Its application principle is as follows:

[0048] 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.

[0049] 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.

[0050] As a preferred structural arrangement, in the design of the locking plate 2, the buckle position 21 is located on the lower side of one end of the locking plate 2; 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 (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 its center of gravity offset has a rotational tendency to rotate around the shaft and flip downwards to the locked state.

[0051] In order to give the locking plate 2 the characteristic of center of gravity shift, the locking plate 2 is specifically configured as follows: 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, so that the height dimension of the locking plate 2 is narrowed from one end to the other end, thereby shifting its center of gravity to one end position.

[0052] Based on the limiting inclined surface 25, a locking baffle 36 is vertically arranged on the rear side of the locking seat 3. When the locking plate 2 is in the unlocked state, the limiting inclined surface 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.

[0053] Regarding the specific configuration of the latching position 21, in this embodiment, the upper part of the middle section of the locking plate 2 extends to one end in an L-shaped plate shape, and the latching position 21 is formed on the lower side of one end of the locking plate 2. The width of the latching position 21 is greater than the thickness of the locking plate 2, so that it can better latch and cooperate with the positioning beam 102. A circular hole is provided in the L-shaped bend at one end of the locking plate 2 as the auxiliary rope connection position 205. 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 of the related structures is avoided.

[0054] 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. A second latch 35 is provided on the locking seat 3 corresponding to the flipped lower 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 pivot 31.

[0055] As a preferred structural configuration, in the design of the movable locking member 4, the pushing direction of the locking block 41 is perpendicular to the flipping and rotating direction of the locking plate 2; when the locking plate 2 is in the unlocked state, the plate surface of the locking plate 2 on the side of the locking movable member limits the pushing movement of the locking block 41.

[0056] 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.

[0057] 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.

[0058] The locking seat 3 has multiple through holes 33 on the side corresponding to the connecting shaft 31; 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 the through hole 33, 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, 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, and 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.

[0059] Example 3:

[0060] 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.

[0061] 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.

[0062] 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 plate construct, characterized by, The locking plate has a buckle position on the lower side of one end, and a secondary rope connecting position on the upper side of the one end; the other end of the locking plate is provided with a rotating interface; the center of gravity of the locking plate is offset to the position of the one end; When the locking plate is connected to the connecting rotating shaft through the rotating interface, the locking plate with the center of gravity offset has a rotating trend of turning the one end downward around the rotating shaft.

2. The lock plate structure of claim 1, wherein, The height of the locking plate is reduced from the position of the one end to the position of the other end, so that the center of gravity of the locking plate is offset to the position of the one end.

3. The lock plate structure of claim 2, wherein The upper side of the one end of the locking plate has an inclined limiting slope upward from the position of the rotating interface to the middle position of the locking plate.

4. The lock plate structure of claim 2, wherein The upper part of the middle position of the locking plate extends to the position of the one end in the form of an L-shaped plate, so that the lower side of the position of the one end of the locking plate forms the buckle position; the width of the buckle position is greater than the thickness of the locking plate, and the inner side of the buckle position is provided with a buffer pad.

5. The lock plate structure of claim 4, wherein A circular hole is arranged in the L-shaped turning position of the upper part of the one end of the locking plate as the secondary rope connecting position.

6. The lock plate structure according to any one of claims 1 to 5, wherein The locking plate is provided with a limiting block at the position of the outer periphery of the rotating interface.

7. The lock plate structure of claim 6, wherein The limiting block is in the form of an L-shaped plate, and the upper side of the limiting block forms a horizontally arranged abutting end face.

8. A trigger lock structure characterized by, Comprising: The locking plate according to any one of claims 1 to 7; The locking seat is provided with a connecting rotating shaft, and the connecting rotating shaft is connected to the rotating interface to rotate the locking plate in the locking seat; In the application of the locking plate, it includes a non-locked state in a rotating position and a locked state in another rotating position; the height of the one end of the locking plate in the non-locked state is higher than the height of the one end of the locking plate in the locked state; when the locking plate is in the non-locked state, the locking plate has a rotating trend of turning to the locked state around the connecting rotating shaft under the center of gravity offset of the locking plate; The movable locking member positions and limits the locking plate when the locking plate is rotated to the locked state.

9. The trigger-activated locking structure of claim 8, wherein The elastic connecting member is connected between the locking seat and the locking plate, and under the elastic potential of the elastic connecting member, the locking plate has a rotating trend of turning to the locked state around the connecting rotating shaft.

10. A lifting platform, characterised in that Comprising: The platform support is arranged in the vertical direction and includes a vertical guide rail and a positioning cross beam arranged at a distance on one side of the vertical guide rail; The connecting frame for positioning the movable platform is provided with a guide pulley connected to the vertical guide rail in sliding mode, and is provided with a main rope connecting position and a trigger type locking structure according to claim 8 or 9; The lifting driving device is arranged in the vertical direction at the upper end of the platform support and is connected to the main rope, and the end of the connecting main rope is connected to the main rope connecting position; the end of the connecting main rope is connected to the secondary rope, and the end of the connecting secondary rope is connected to the secondary rope connecting position; the connecting main rope and the connecting secondary rope are connected to the connecting frame, and the connecting secondary rope has an upward pulling force on the locking plate, so that the locking plate is in the non-locked state; When the connection main rope is disconnected from the lifting driving device, the connection secondary rope loses the pulling force on the locking plate from the connection support of the connection main rope, and the locking plate is overturned to the locking state under the offset of its gravity center, so that the locking plate moves towards the positioning crossbeam side, and the buckle position is buckled to the positioning crossbeam, and the trigger type locking structure buckled to the positioning crossbeam stops the positioning of the movable platform on the platform support.

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