Gravity self-locking hoisting device

Abstract

The utility model discloses a gravity self-locking hoisting device, which belongs to the field of hoisting transportation and comprises a back plate group and a baffle plate arranged on the outermost surface of the back plate group, a driving gear and a buffer plate are respectively arranged at the positions of the back plate group close to the upper end and the lower end, and an object placing group for placing heavy objects and a clamping group for clamping the heavy objects are movably arranged on the back plate group. By arranging the driving gear, the storage group and the clamping group, when a heavy object is placed on the storage group, the storage group is driven to move downwards, under the action of the driving gear, the clamping group is driven to get close to the middle until the heavy object is clamped, and in the hoisting process, an inserting rod is pulled to drive a movable connecting disc and a limiting strip to move upwards, so that the heavy object is clamped. According to the lifting device, the driving gear is meshed, the situation that the clamping set is loosened in the lifting process is avoided, manual clamping and electronic means using by workers are not needed, the situations of misoperation and electronic accidents are avoided, and the lifting safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting and transportation, in particular to a gravity self-locking hoisting device. Background Art

[0002] The gravity self-locking lifting device is a device widely used in the lifting process. It uses the effect of gravity to achieve the self-locking function to ensure safety and stability during the lifting process.

[0003] In order to prevent accidental loosening or slipping after the existing self-locking devices are activated, most of them are locked by workers manually operating mechanical or electronic means, such as electric electromagnetic locks, etc. However, electromagnetic locks are prone to accidents, resulting in insufficient electromagnetic force, which leads to locking failure. Accidents are prone to occur during the lifting process. The way workers operate the machinery is cumbersome, and when operating errors occur, accidents are likely to occur, seriously affecting the safety of lifting. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that in the prior art, in order to prevent accidental loosening or slipping, workers manually operate mechanical or electronic means to lock the lifting device, which is prone to accidents such as electromagnetic locks and other electronic means resulting in insufficient electromagnetic force and locking failure. The mechanical operation of workers is cumbersome and accidents are likely to occur when operating errors occur, seriously affecting the safety of lifting. A gravity self-locking lifting device is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A gravity self-locking lifting device comprises a back plate group and a baffle plate installed on the outermost side of the back plate group, wherein a driving gear and a buffer plate are respectively installed near the upper and lower ends of the back plate group, and the driving gear is rotatably installed. A placement group for placing heavy objects and a clamping group for clamping heavy objects are movably installed on the back plate group, and the placement group is located at the bottom of the clamping group and the placement group drives the clamping group to clamp the heavy object through the driving gear; a fixing component for locking the clamping group is arranged on the back side of the back plate group.

[0007] Preferably, the buffer plate is installed in the middle of the storage group through a buffer groove, a reset spring is installed in the middle of the buffer plate and the top of the buffer groove, and a movable rack meshing with the driving gear is arranged above the storage group.

[0008] Preferably, the clamping group includes a No. 1 clamping plate and a No. 2 clamping plate, and a guide groove is provided on the clamping group. The clamping group is movably installed above the back plate group by means of a guide block sliding in the guide groove. The No. 1 clamping plate and the No. 2 clamping plate are respectively provided with a tooth block group meshing with the driving gear, and a buffer spring is installed between the guide block and the inner wall of the guide groove.

[0009] Preferably, the fixed assembly includes a movable connecting plate, an insertion rod and a fixed connecting plate fixedly installed on the back side of the back plate group, the insertion rod is installed on the movable connecting plate through a through slot, a lifting ring for connecting a crane is installed on the top of the insertion rod, and a limit strip is installed on the other end of the movable connecting plate through a through limit slot, and the limit strip is adapted to mesh with the teeth on the driving gear.

[0010] Preferably, the back plate group includes a lower back plate and an upper back plate, and adjustment grooves are provided in the ends of the lower back plate and the upper back plate that are close to each other, and vertical electric push rods and adjustment springs are respectively installed in the adjustment grooves. The movable rack is movably installed on the top of the storage group through a sliding groove, and a transverse electric push rod is installed on the top of the storage group, and the extending end of the transverse electric push rod is connected to the movable rack.

[0011] Preferably, the end of the clamping group that contacts the heavy object is configured as an arc-shaped structure.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By providing a driving gear, a storage group and a clamping group, when a heavy object is placed on the storage group, the storage group is driven to move downward, and the clamping group is driven to move closer to the middle under the action of the driving gear until the heavy object is clamped. The crane is connected to the hanging ring on the plug rod through a lifting rope and a hook. During the lifting process, the plug rod is pulled by the lifting rope to drive the movable connecting plate and the limit bar to move upward, completing the engagement of the driving gear, thereby avoiding the loosening of the clamping group during the lifting process, thereby causing a lifting accident. After the lifting is completed, the lifting rope is loose, and the limit bar is driven downward under the action of the gravity of the movable connecting plate, thereby canceling the limit relationship with the driving gear. At this time, the heavy object can be loaded and unloaded, and workers do not need to manually clamp or use electronic means, thereby avoiding operating errors and electronic accidents and improving the safety of lifting.

[0014] 2. By providing a vertical electric push rod, an adjustment spring and a horizontal electric push rod, the lower back plate and the upper back plate can be driven to move up and down, thereby adjusting the vertical distance between the clamping group and the placement group, which can adapt to heavy objects of different heights and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front perspective schematic diagram of the overall structure of a gravity self-locking lifting device proposed by the utility model;

[0016] Figure 2 This is a three-dimensional schematic diagram of the overall structure of a gravity self-locking lifting device proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the overall structure installation of a gravity self-locking lifting device proposed by the utility model;

[0018] Figure 4 A schematic diagram of a heavy object clamping structure of a gravity self-locking lifting device proposed by the utility model;

[0019] Figure 5 for Figure 3 Enlarged view of point A in the middle;

[0020] Figure 6 The utility model is a cross-sectional view of the back plate group structure of a gravity self-locking lifting device.

[0021] In the figure: 1. back plate group; 101. adjustment slot; 111. lower back plate; 112. upper back plate; 11. buffer plate; 12. driving gear; 13. storage group; 131. buffer slot; 132. return spring; 133. movable rack; 14. clamping group; 141. clamping plate No. 1; 142. clamping plate No. 2; 143. guide block; 104. guide slot; 144. tooth block group; 145. buffer spring; 15. baffle; 2. fixing assembly; 21. fixed connecting plate; 22. movable connecting plate; 23. plug rod; 24. limit strip; 201. slot; 202. limit slot; 3. vertical electric push rod; 31. adjustment spring; 32. horizontal electric push rod. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] Embodiment 1

[0024] Reference Figure 1-5A gravity self-locking lifting device comprises a back plate group 1 and a baffle 15 installed on the outermost side of the back plate group 1. A driving gear 12 and a buffer plate 11 are respectively installed near the upper and lower ends of the back plate group 1. The driving gear 12 is rotatably installed. A placement group 13 for placing heavy objects and a clamping group 14 for clamping heavy objects are movably installed on the back plate group 1. The placement group 13 is located at the bottom of the clamping group 14 and the placement group 13 drives the clamping group 14 to clamp the heavy object through the driving gear 12; a fixing component 2 for locking the clamping group 14 is arranged on the back side of the back plate group 1.

[0025] Furthermore, the buffer plate 11 is installed in the middle of the storage group 13 through the buffer groove 131, and a reset spring 132 is installed in the middle of the buffer plate 11 and the top of the buffer groove 131. A movable rack 133 meshing with the driving gear 12 is arranged above the storage group 13.

[0026] It should be noted that: the clamping group 14 includes a No. 1 clamping plate 141 and a No. 2 clamping plate 142, and a guide groove 104 is opened on the clamping group 14. The clamping group 14 is movably installed above the back plate group 1 by sliding a guide block 143 in the guide groove 104. The No. 1 clamping plate 141 and the No. 2 clamping plate 142 are respectively provided with a tooth block group 144 meshing with the driving gear 12, and a buffer spring 145 is installed between the guide block 143 and the inner wall of the guide groove 104.

[0027] It is worth noting that the end of the clamping group 14 that contacts the heavy object is set to an arc-shaped structure, which can be applicable to heavy objects of different shapes, improves the clamping effect between the heavy object, and has universality and practicality.

[0028] Further benefits of adopting the above are:

[0029] When a heavy object is placed on the storage group 13, the storage group 13 is moved downward by the gravity of the heavy object, and the first clamping plate 141 and the second clamping plate 142 are moved toward the direction of the middle heavy object under the action of the driving gear 12 to clamp the heavy object. The heavy object is clamped by the gravity of the heavy object, making the lifting operation more convenient.

[0030] Embodiment 2 proposed based on Embodiment 1:

[0031] Reference Figure 2-5 The fixed component 2 includes a movable connecting disk 22, an insert rod 23 and a fixed connecting disk 21 fixedly installed on the back side of the back plate group 1. The insert rod 23 is installed on the movable connecting disk 22 through a through slot 201. A lifting ring for connecting a crane is installed on the top of the insert rod 23. A limiting strip 24 is installed on the other end of the movable connecting disk 22 through a through limiting groove 202. The limiting strip 24 is adapted to mesh with the teeth on the driving gear 12.

[0032] A further advantage of adopting the above method is that by connecting the lifting ring at the top of the insertion rod 23 to the hook of the crane, the insertion rod 23 is driven to move upward during lifting, thereby driving the movable connecting plate 22 and the limit bar 24 upward until the limit bar 24 and the teeth on the drive gear 12 are matched and meshed. During the lifting process, the insertion rod 23 always remains in an upward state, so the limit bar 24 and the drive gear 12 always limit the drive gear 12 through the meshing state, thereby preventing the clamping group 14 from sliding when the heavy object is tilted. The clamping group 14 always clamps the heavy object, thereby improving the safety of lifting and avoiding lifting accidents.

[0033] Embodiment 3 proposed based on Embodiment 2:

[0034] Reference Figure 4-6 The back plate group 1 includes a lower back plate 111 and an upper back plate 112. An adjustment groove 101 is provided in one end of the lower back plate 111 and the upper back plate 112 close to each other. A vertical electric push rod 3 and an adjustment spring 31 are respectively installed in the adjustment groove 101. A movable rack 133 is movably installed on the top of the storage group 13 through a sliding groove. A horizontal electric push rod 32 is installed on the top of the storage group 13, and the extending end of the horizontal electric push rod 32 is connected to the movable rack 133.

[0035] Further benefits of adopting the above are:

[0036] When it is necessary to adjust the vertical spacing between the clamping group 14 and the storage group 13, the movable rack 133 is pushed by the horizontal electric push rod 32 to cancel the meshing relationship with the driving gear 12, and then the distance between the lower back plate 111 and the upper back plate 112 is adjusted by the vertical electric push rod 3, so as to achieve clamping of heavy objects at different heights, which is more applicable.

[0037] When the utility model is used, before hoisting, the movable rack 133 is pushed by the horizontal electric push rod 32 to cancel the meshing with the driving gear 12, and the total height between the lower back plate 111 and the upper back plate 112 is adjusted by adjusting the height of the vertical electric push rod 3, so as to adjust the vertical spacing between the clamping group 14 and the storage group 13. After adjustment, the movable rack 133 is reset by the horizontal electric push rod 32. When the heavy object is placed on the storage group 13, the storage group 13 is driven downward by the gravity of the heavy object, and the driving gear 12 is driven by the movable rack 133. The gear 12 rotates, thereby driving the No. 1 clamping plate 141 and the No. 2 clamping plate 142 to approach each other until the heavy object is clamped. During hoisting, the hook on the crane is connected to the hanging ring on the plug rod 23. The hoisting machine drives the plug rod 23 to move upward, thereby driving the movable connecting plate 22 and the limit bar 24 to move upward until the limit bar 24 is engaged with the tooth block on the driving gear 12, thereby limiting the driving gear 12, preventing the heavy object from tilting during the hoisting process, resulting in uneven gravity and loosening of the clamping group 14, avoiding hoisting accidents and improving installation performance.

[0038] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A gravity self-locking lifting device, comprising a back plate group (1) and a baffle (15) installed on the outermost side of the back plate group (1), characterized in that: The back plate group (1) is respectively provided with a driving gear (12) and a buffer plate (11) near the upper and lower ends thereof; the driving gear (12) is rotatably installed; a placement group (13) for placing heavy objects and a clamping group (14) for clamping heavy objects are movably installed on the back plate group (1); the placement group (13) is located at the bottom of the clamping group (14) and the placement group (13) drives the clamping group (14) to clamp the heavy objects via the driving gear (12); and a fixing component (2) for locking the clamping group (14) is provided on the back of the back plate group (1).

2. A gravity self-locking lifting device according to claim 1, characterized in that: The buffer plate (11) is installed in the middle of the storage group (13) through a buffer groove (131), a return spring (132) is connected and installed in the middle of the buffer plate (11) and the top of the buffer groove (131), and a movable rack (133) meshing with the driving gear (12) is arranged above the storage group (13).

3. A gravity self-locking lifting device according to claim 1, characterized in that: The clamping group (14) comprises a first clamping plate (141) and a second clamping plate (142), a guide groove (104) is provided on the clamping group (14), and the clamping group (14) is movably mounted above the back plate group (1) by means of a guide block (143) sliding in the guide groove (104), the first clamping plate (141) and the second clamping plate (142) are respectively provided with a tooth block group (144) meshing with the driving gear (12), and a buffer spring (145) is installed between the inner wall of the guide block (143) and the guide groove (104).

4. A gravity self-locking lifting device according to claim 1, characterized in that: The fixing assembly (2) comprises a movable connecting plate (22), an insert rod (23) and a fixed connecting plate (21) fixedly mounted on the back of the back plate assembly (1); the insert rod (23) is mounted on the movable connecting plate (22) through a through slot (201); a lifting ring for connecting a crane is mounted on the top of the insert rod (23); a limiting strip (24) is mounted on the other end of the movable connecting plate (22) through a through limiting slot (202); the limiting strip (24) is adapted to mesh with teeth on the driving gear (12).

5. A gravity self-locking lifting device according to claim 2, characterized in that: The back plate group (1) comprises a lower back plate (111) and an upper back plate (112), and an adjustment groove (101) is provided in one end of the lower back plate (111) and the upper back plate (112) close to each other, and a vertical electric push rod (3) and an adjustment spring (31) are respectively installed in the adjustment groove (101), and the movable rack (133) is movably installed on the top of the storage group (13) through a sliding groove, and a transverse electric push rod (32) is installed on the top of the storage group (13), and the extended end of the transverse electric push rod (32) is connected to the movable rack (133).

6. A gravity self-locking lifting device according to claim 1, characterized in that: One end of the clamping group (14) in contact with the heavy object is arranged in an arc-shaped structure.

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