CN220182550U - Automatic unhooking device - Google Patents

Abstract

The utility model discloses an automatic unhooking device, and belongs to the technical field of lifting appliances. The device includes the hanger plate, but be provided with the slide of activity from top to bottom in the hanger plate, the slide lower extreme runs through the hanger plate and with lifting hook fixed connection, lifting hook point department fixedly connected with activity rope, hanger plate one side is provided with the receipts of being used for receiving and releasing the activity rope and puts the subassembly, activity rope one end is walked around the front side and upside of lifting hook and slide back and is connected with receiving and releasing the subassembly, this automatic unhook device can easily realize the automation of lifting hook and goods and break away from, need not the manual work and get the hook, convenient operation, and inside does not have complicated mechanical structure, the processing cost is low, and the structure adds singly, convenient to detach maintains, the pivoted work efficiency of goods has been improved.

Description

Automatic unhooking device

Technical Field

The utility model relates to the technical field of lifting appliances, in particular to an automatic unhooking device.

Background

The lifting hook is the most common lifting appliance in lifting machinery. The hooks are often suspended from the wire rope of the hoisting mechanism by means of pulley blocks or the like.

When the lifting hook works, an operator is required to hang the lifting hook on a cargo, the cargo is lifted to a designated place, and then the operator is manually separated from the cargo, so that the transportation operation of the cargo is completed. Because the material of lifting hook is 20 steel basically, in addition, the lifting chain or wire rope of lifting hook top leads to lifting hook overall weight ratio great, makes the operator be difficult for breaking off the lifting hook off with fingers and thumb, when handling in the factory building simultaneously, still can appear the goods and fall to the ground the problem of back pressure hook, has led to the goods to be difficult for getting the hook after handling in place the problem of operator, has influenced work efficiency.

Therefore, the automatic unhooking device is designed, and the movable steel wire rope is designed on the lifting hook, so that after the lifting hook lifts the goods in place, the steel wire rope is automatically straightened, the lifting hook is sprung away from the goods, automatic unhooking is realized, manual hook taking is not needed, and the problem that hook taking is difficult in current lifting operation is solved.

Disclosure of Invention

The utility model aims to provide an automatic unhooking device, which is characterized in that a rope wheel is matched with a liftable sliding plate, when goods are placed on the ground and the sliding plate is recovered into a hanging plate, a movable rope at the front side of a lifting hook is tensioned and straightened, so that the lifting hook is sprung away from the goods, and automatic unhooking is realized, so that the problems in the background technology are solved.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides an automatic unhooking device, includes the hanger plate, be provided with the slide that can reciprocate in the hanger plate, the slide lower extreme runs through the hanger plate and with lifting hook fixed connection, lifting hook point department fixedly connected with movable rope, hanger plate one side is provided with the receipts of being used for receiving and releasing movable rope and puts the subassembly, and movable rope one end is walked around the front side and the upside of lifting hook and slide and is connected with receipts and puts the subassembly.

As a further preferred embodiment of the present utility model: the lifting plate is internally provided with a mounting cavity, the sliding plate is arranged in the mounting cavity in a sliding manner, the sliding plate is provided with a mounting opening penetrating through the side wall of the sliding plate, a reset assembly is arranged in the mounting opening and used for realizing lifting of the sliding plate, the side wall of the sliding plate is fixedly provided with a first limiting block, the inner wall of the mounting cavity is provided with a first limiting groove, and the first limiting block is arranged in the first limiting groove in a sliding manner.

As a further preferred embodiment of the present utility model: the side edges of the sliding plate and the lifting hook are provided with a placing groove for placing the movable rope.

As a still further preferred embodiment of the present utility model: the winding and unwinding assembly comprises a rope wheel rotatably arranged on the rear side wall of the hanging plate, a through hole positioned above the first limiting groove is formed in the rear side wall of the hanging plate, the through hole is communicated with the middle of the installation cavity, one end of the movable rope penetrates through the through hole and is fixedly connected with the rope wheel, and a driving device for driving the rope wheel to rotate is arranged on the rear side of the hanging plate.

As a still further preferred embodiment of the present utility model: the driving device comprises an outer shaft, an inner shaft and a limiting plate, wherein the limiting plate is fixedly arranged on the side wall of the hanging plate, the outer shaft penetrates through the limiting plate and is rotationally connected with the limiting plate, one end of the outer shaft is fixedly connected with the rope wheel, the inner shaft is arranged in the outer shaft in a sliding mode, the inner shaft penetrates through the outer shaft and is far away from one end of the rope wheel, the handle is fixedly connected with the outer shaft, a clamping plate located between the handle and the limiting plate is fixedly arranged on the outer wall of the outer shaft, a limiting column is arranged on the clamping plate, a limiting hole corresponding to the limiting column is formed in the limiting plate, and the limiting column can be inserted into the limiting hole.

As a still further preferred embodiment of the present utility model: the retractable assembly comprises a strip inner sliding hole formed in the rear side of the sliding plate, the upper end of the strip inner sliding hole is communicated with the placing groove, a movable rod is arranged in the strip inner sliding hole in a sliding mode up and down, the movable rod is fixedly connected with a movable rope, a strip outer sliding hole is formed in the outer side wall of the hanging plate, two ends of the movable rod penetrate through the strip outer sliding hole and are in sliding connection with the strip outer sliding hole, a clamping jaw is rotatably arranged on the outer wall of the hanging plate, a bayonet corresponding to the movable rod is formed in the lower end of the clamping jaw, and a torsion spring is arranged on a connecting shaft between the hanging plate and the clamping jaw.

As a still further preferred embodiment of the present utility model: the lifting plate and the clamping jaw are provided with corresponding insertion holes for inserting the positioning pins, and the clamping jaw can be fixed on the lifting plate through the positioning pins.

As a still further preferred embodiment of the present utility model: the reset assembly comprises a reset spring and a stop block, wherein the reset spring and the stop block are positioned in the mounting opening, the upper end and the lower end of the reset spring are respectively fixedly connected with the upper wall of the mounting opening and the stop block, the stop block penetrates through the lower end part of the mounting opening and is movably connected with the mounting opening, and the two ends of the stop block are fixedly connected with the inner wall of the mounting cavity.

As a still further preferred embodiment of the present utility model: the first limiting blocks are fixedly arranged on the front side and the rear side of the sliding plate, and are symmetrically arranged on the two sides of the placing groove.

Compared with the prior art, the utility model has the beneficial effects that:

1. when the rope wheel and the driving device are adopted to realize the retraction of the movable rope, the sliding plate and the retraction assembly are matched, when the lifting hook hooks the goods to lift, the sliding plate and the lifting hook move downwards along the lifting plate under the stretching of the gravity of the goods, then the retraction assembly is used for retracting the movable rope remained above the movable rope, when the goods fall on the ground, the sliding plate rises under the action of the reset assembly, at the moment, the movable rope above the sliding plate is retracted by the retraction assembly, the movable rope at the lifting hook is tensioned to be in a vertical state, and then the lifting hook is flicked off from the goods, so that the automatic unhooking is realized, the principle is simple, a complex mechanical structure is not needed, and the operation is convenient;

2. through the cooperation of the first limiting groove and the first limiting block, the limiting effect on the sliding plate during movement can be achieved, the sliding plate is prevented from sliding out of the hanging plate downwards, the structure is simple, and the processing is convenient;

3. the rope wheel and the driving device are adopted to realize the retraction of the movable rope, an operator only needs to pull the inner shaft outwards through the handle to drive the limit post to leave the limit hole, the fixation of the rope wheel can be relieved, the movable rope is conveniently attached to the front side of the lifting hook before the lifting hook is lifted, the inner shaft is pushed inwards in the same way, the limit post is inserted into the limit hole, the fixation of the rope wheel can be realized, the movable rope is conveniently matched with the sliding plate, the tensioning of the movable rope on the front side of the lifting hook is realized, and the automatic unhooking function is realized;

4. when the movable rod and the clamping jaw are adopted to realize the retraction of the movable rope, when the lifting hook hooks the goods, under the stretching of the gravity of the goods, the sliding plate and the lifting hook move downwards along the lifting plate, the long-strip inner sliding hole drives the movable rod to move downwards along the long-strip outer sliding hole, after the lifting hook slides to the lowest position, the clamping jaw is rotated to clamp the bayonet at the lower end of the clamping jaw onto the movable rod, the limit of the movable rod is realized, when the goods fall on the ground, the sliding plate rises under the action of the reset assembly, the sliding plate is limited by the clamping jaw with respect to the movable rod, and moves upwards relative to the movable rod, at the moment, the movable rope is tensioned and becomes in a vertical state, so that the lifting hook and the goods are sprung away, the automatic unhooking is realized, the principle is simple, a complex mechanical structure is not needed, and the operation is convenient;

5. through the design of the placing groove, the movable rope is convenient to be attached to the side walls of the lifting hook and the sliding plate better, the contact between the lifting hook and goods is not affected, meanwhile, when the sliding plate is in close contact with the inner wall of the mounting cavity, the movement of the movable rope is not affected, the movable rope can be ensured to move along the placing groove all the time, and the stability of the lifting operation is ensured;

6. realize the automatic re-setting of slide through reset spring, design the spring for the size with the installation mouth looks adaptation, make the spring outer wall just with installation intracavity wall contact simultaneously, can realize spacing to the spring week side, stability when guaranteeing the vertical removal of spring can not appear the problem of slope, simple structure, processing is convenient.

To sum up, this automatic unhook device can easily realize the automation of lifting hook and goods and break away from, need not the manual work and get the hook, convenient operation, and inside does not have complicated mechanical structure, and the processing cost is low, and the structure adds singly, convenient to detach maintains, has improved goods pivoted work efficiency.

Drawings

Fig. 1 is a schematic view of the structure of an automatic unhooking device in the original state in embodiment 1 of the present utility model;

FIG. 2 is a schematic side sectional view of an automatic unhooking apparatus according to an embodiment 1 of the present utility model;

FIG. 3 is a schematic side sectional view of a hanger plate of an automatic unhooking apparatus in embodiment 1 of the present utility model;

FIG. 4 is a schematic view showing the structure of the front side of a slide plate and a hook of the automatic unhooking device according to the embodiment 1 of the present utility model;

FIG. 5 is a schematic view showing the rear structure of the automatic unhooking apparatus according to embodiment 1 of the present utility model;

FIG. 6 is an enlarged schematic view of the driving device shown in FIG. 5;

fig. 7 is a schematic front view of the automatic unhooking device in embodiment 1 of the present utility model;

fig. 8 is a schematic structural view of the automatic unhooking device hanging plate half shell assembly in embodiment 1 of the present utility model;

fig. 9 is a schematic view of the structure of the automatic unhooking device in the embodiment 1 of the present utility model when the automatic unhooking device is lifted;

FIG. 10 is a schematic view showing the structure of the automatic unhooking device in the embodiment 1 of the present utility model when the movable rope is tightened after the lifting operation;

fig. 11 is a schematic view of the structure of the automatic unhooking device in the original state in embodiment 2 of the present utility model;

fig. 12 is a schematic view of the structure of the automatic unhooking device in the embodiment 2 of the present utility model when the automatic unhooking device is lifted;

fig. 13 is a schematic view showing a front view of the automatic unhooking device according to embodiment 2 of the present utility model;

FIG. 14 is a schematic view showing the structure of the automatic unhooking device in the embodiment 2 of the present utility model when the movable rope is tightened after the lifting operation;

FIG. 15 is a schematic side sectional view of an automatic unhooking apparatus according to an embodiment 2 of the present utility model;

fig. 16 is an enlarged schematic view of the movable bar of fig. 15.

In the figure: 1. a hanger plate; 2. a mounting cavity; 3. a slide plate; 4. a placement groove; 5. a first limiting block; 6. a first limit groove; 7. a movable rope; 8. a mounting port; 9. a return spring; 10. a stop block; 11. a through hole; 12. a rope pulley; 13. a driving device; 131. an outer shaft; 132. an inner shaft; 133. a second limiting block; 134. the second limit groove; 135. a limiting plate; 136. a limiting hole; 137. a limit column; 138. a handle; 139. a clamping plate; 14. a lifting hook; 15. a hanging ring; 16. a threaded hole; 17. a bolt; 18. hanger plate half shell; 19. a long strip inner sliding hole; 20. a movable rod; 21. a claw; 22. a positioning pin; 23. a strip-shaped outer sliding hole; 24. a slide block; 25. a chute; a 26 bayonet; 27. a torsion spring; 28. and a jack.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1-10, the present embodiment provides an automatic unhooking device, including a hanger plate 1, a sliding plate 3 capable of moving up and down is provided in the hanger plate 1, specifically, a mounting cavity 2 is provided in the hanger plate 1, the sliding plate 3 is slidably disposed in the mounting cavity 2, a mounting opening 8 penetrating through a side wall of the sliding plate 3 is provided on the sliding plate 3, a reset component is provided in the mounting opening 8 for realizing lifting of the sliding plate 3, preferably, in the present embodiment, the reset component includes a reset spring 9 and a stop block 10 located in the mounting opening 8, an upper end and a lower end of the reset spring 9 are fixedly connected with an upper wall of the mounting opening 8 and the stop block 10 respectively, the stop block 10 penetrates a lower end of the mounting opening 8 and is movably connected with the mounting opening 8, two ends of the stop block 10 are fixedly connected with an inner wall of the mounting cavity 2, a first stop block 5 is fixedly disposed on the side wall of the sliding plate 3, the first limiting groove 6 is arranged on the inner wall of the installation cavity 2, the first limiting block 5 is arranged in the first limiting groove 6 in a sliding way, the lower end of the sliding plate 3 penetrates through the hanging plate 1 and is fixedly connected with the hanging hook 14, the movable rope 7 is fixedly connected with the hook tip of the hanging hook 14, in order to realize better placement of the movable rope 7 on the hanging hook 14 and the sliding plate 3, the placing grooves 4 for placing the movable rope 7 are respectively arranged on the side edges of the sliding plate 3 and the hanging hook 14, when the sliding plate 3 moves in the installation cavity 2, due to the fact that the outer wall of the sliding plate 3 is attached to the inner wall of the installation cavity 2, the movable rope 7 can normally move along the placing grooves 4 due to the design of the placing grooves 4, the problem that the movable rope 7 is extruded between the sliding plate 3 and the installation cavity 2 to cause rope clamping is avoided, one side of the hanging plate 1 is provided with a retraction assembly for retracting the movable rope 7, one end of the movable rope 7 bypasses the lifting hook 14 and the front side and the upper side of the sliding plate 3 and is connected with the retraction assembly.

As shown in fig. 1 and 5, in this embodiment, the retraction assembly includes a sheave 12 rotatably disposed on a rear side wall of a hanger plate 1, a through hole 11 located above a first limit groove 6 is formed in the rear side wall of the hanger plate 1, the through hole 11 is communicated with a middle portion of an installation cavity 2, one end of a movable rope 7 passes through the through hole 11 and is fixedly connected with the sheave 12, a driving device 13 for driving the sheave 12 to rotate is disposed on a rear side of the hanger plate 1, specifically, in conjunction with fig. 6, the driving device includes an outer shaft 131, an inner shaft 132 and a limit plate 135, the limit plate 135 is fixedly disposed on a side wall of the hanger plate 1, the outer shaft 131 passes through the limit plate 135 and is rotatably connected with the limit plate 135, one end of the outer shaft 131 is fixedly connected with the sheave 12, the inner shaft 132 passes through one end of the outer shaft 132 far away from the sheave 12 and is fixedly connected with a handle 138, a clamping plate 139 located between the handle 138 and the limit plate 135 is fixedly disposed on an outer wall of the outer shaft 131, a limit post 137 is disposed on the clamping plate 139, a limit hole 136 corresponding to the limit post 137 is disposed on the limit plate 135, and a limit post 137 is disposed in the limit post 136 is insertable into the limit post 136.

It should be noted that, the sliding design of the inner shaft 132 in the outer shaft 131 is a conventional design familiar to those skilled in the art, and referring to fig. 6, in this embodiment, preferably, a plurality of second limiting grooves 134 are uniformly formed on the inner wall of the outer shaft 131, a plurality of second limiting blocks 133 are uniformly fixed on the outer wall of the inner shaft 132, and the second limiting blocks 133 are slidably disposed in the second limiting grooves 134, so as to realize a design that the inner shaft 132 can only slide along the axial direction of the outer shaft 131.

Preferably, in order to prevent the design of the placement groove 4 from being affected by the first limiting block 5, as shown in fig. 3 and 4, in this embodiment, the first limiting block 5 is preferably fixedly disposed on the front and rear sides of the sliding plate 3, and the first limiting blocks 5 are symmetrically disposed on two sides of the placement groove 4, so that two first limiting grooves 6 on the front and rear inner walls of the hanger plate 1 are also respectively formed as conventional designs familiar to those skilled in the art.

In this embodiment, in order to realize the quick assembly of the automatic unhooking device, as shown in fig. 8, the hanger plate 1 is designed to be a structure composed of two corresponding hanger plate half shells 18, the hanger plate half shells 18 and the stop block 10 are both provided with threaded holes 16, during assembly, only the assembled sliding plate 3 is required to be placed on one of the hanger plate half shells 18, then the other corresponding hanger plate half shell 18 is buckled, then the two hanger plate half shells 18 are fixed by bolts, and the stop block 10 is fixed with the inner wall of the installation cavity 2 by bolts, and the assembled structure can be shown in fig. 7.

In addition, as shown in fig. 1, in order to use the unhooking device conveniently, a hanging ring 15 is welded at the upper end of the hanging plate 1 and is used for being connected with a chain or a hanging rope on the hanging device, and the unhooking device is of conventional design and is not described again.

In order to further ensure the stability of the return spring 9 during compression, an upper guide post can be fixedly arranged at the upper end of the stop block 10, the return spring 9 is sleeved on the periphery of the guide post, the height of the guide post does not influence the descending height of the sliding plate 3, and the guide post can be automatically added during processing according to requirements.

In order to better understand the present utility model, the working principle of the automatic unhooking device will be explained below:

because the driving mode of the driving device 13 of the automatic unhooking device is manual, the application scene of the embodiment is a small-sized lifting operation environment such as a factory building, and when the automatic unhooking device is used, the automatic unhooking device is connected with a crane chain at the top of the factory building or a crane chain on a small-sized lifting trolley through the lifting ring 15;

before lifting, as shown in fig. 1, the movable rope 7 is positioned in the placing groove 4, the sliding plate 3 is positioned in the lifting plate 1, the limiting column 137 is positioned in the limiting hole 136, and the rope pulley 12 is limited and fixed;

after the lifting hook 14 is hooked on the goods, when the goods are lifted, the lifting hook 14 and the sliding plate 3 are pulled by the goods to move downwards along the mounting cavity 2, the reset spring 9 is compressed, when the first limiting block 5 is clamped to the bottom of the first limiting groove 6, the unhooking device starts to drive the goods to lift, at the moment, the inner shaft 132 is pulled outwards, the handle 138 is rotated, the rope wheel 12 is enabled to retract the movable rope 7 remained above the sliding plate 3, then the rope wheel 12 is limited and fixed, at the moment, the state of the automatic unhooking device is as shown in fig. 9, and the position of the goods is transferred through a travelling crane or a trolley;

when the goods are lifted in place, the pulling force of the goods on the lifting hook 14 disappears, the sliding plate 3 quickly rebounds under the action of the return spring 9, and the length of the movable rope 7 positioned at the hook points of the rope wheel 12 and the lifting hook 14 is longer than that of the end before lifting, so when the sliding plate 3 ascends, the movable rope 7 at the front side of the lifting hook 14 is pulled tightly, the movable rope 7 ejects the placing groove 4 at the front side of the lifting hook 14, the lifting hook 14 and the goods are sprung away, and automatic unhooking is realized, and the state is shown in figure 10;

when the rope is required to be reset, the rope wheel 12 is contacted and limited, and the movable rope 7 is pressed into the placing groove 4 at the front side of the lifting hook 14 by hands.

Example 2

On the basis of embodiment 1, referring to fig. 11-16, in this embodiment, the retraction assembly includes a long sliding hole 19 provided at the rear side of the sliding plate 3, the upper end of the long sliding hole 19 is communicated with the placement groove 4, a movable rod 20 is provided in the long sliding hole 19 in a sliding manner, the movable rod 20 is fixedly connected with the movable rope 7, a long outer sliding hole 23 is provided on the outer side wall of the hanger plate 1, both ends of the movable rod 20 penetrate through the long outer sliding hole 23 and are slidably connected with the long outer sliding hole 23, a claw 21 is rotatably provided on the outer wall of the hanger plate 1, a bayonet 26 corresponding to the movable rod 20 is provided at the lower end of the claw 21, a torsion spring 27 is provided on a connecting shaft between the hanger plate 1 and the claw 21, corresponding insertion holes 28 for inserting a positioning pin 22 are provided on the hanger plate 1 and the claw 21, and the claw 21 can be fixed on the hanger plate 1 through the positioning pin 22.

In order to realize stable sliding of the movable rod 20 in the long inner sliding hole 19 and the long outer sliding hole 23, as a conventional design familiar to those skilled in the art, in connection with fig. 15 to 16, in this embodiment, it is preferable to provide a sliding slot 25 on the inner walls of the long inner sliding hole 19 and the long outer sliding hole 23, and to sleeve a sliding block 24 on the movable rod 20, so that the sliding block 24 stably slides up and down along the sliding slot 25 to realize the stability when the movable rod 20 slides.

In order to enable those skilled in the art to better understand the present embodiment, the working principle of the automatic unhooking device in the present embodiment will be described below:

as shown in fig. 11, a schematic view of the state of the hook 14 when being reset is shown, the movable rope 7 is located in the placement groove 4, the movable rod 20 is located at the upper ends of the long inner sliding hole 19 and the long outer sliding hole 23, and the claw 21 is fixed on the hanger plate 1;

as shown in fig. 12-13, after the hook 14 hooks the weight for lifting, the sliding plate 3 moves down to the lowest end, at this time, the long inner sliding hole 19 presses the movable rod 20 to move down, so that the movable rod 20 is positioned at the lower end of the long outer sliding hole 23, the positioning pin 22 is pulled out, the claw 21 is rotated, the bayonet 26 is made to clamp the movable rod 20, the torsion spring 27 always provides a counterclockwise rotating force to the claw 21, and the stability of the claw 21 when clamping the movable rod 20 is ensured;

as shown in fig. 14, when the goods fall to the ground, the return spring 9 resets the sliding plate 3, and as the movable rod 20 is limited and fixed by the claw 21, the movable rope 7 is tensioned when the sliding plate 3 ascends, and the movable rope 7 in the placing groove 4 at the lifting hook 14 pops out, so that the lifting hook 14 is separated from the goods, and automatic unhooking is realized;

after the unhooking, the movable rod 20 is slightly pulled down to separate the movable rod 20 from the claw 21, the claw 21 rotates to an initial position under the action of the torsion spring 27, then the claw 21 is fixed on the hanger plate 1 through the locating pin 22, the movable rope 7 at the position of the lifting hook 14 is pressed into the placing groove 4 again by hand, and the movable rod 20 returns to the uppermost ends of the strip outer sliding hole 23 and the strip inner sliding hole 19 again, so that the unhooking device is reset.

It should be noted that, the foregoing embodiments only specifically and clearly describe the technical solutions and technical features of the present utility model. And those skilled in the art will not be able to describe in detail the above embodiments regarding the schemes or features belonging to the prior art or common general knowledge.

In addition, the technical solutions of the present utility model are not limited to the above-mentioned embodiments, and those skilled in the art should consider the description as a whole, and the technical solutions in the embodiments may be appropriately combined, so as to form other embodiments that can be understood by those skilled in the art.

Claims (9)

1. The utility model provides an automatic unhooking device, includes hanger plate (1), its characterized in that, be provided with slide (3) that can reciprocate in hanger plate (1), slide (3) lower extreme runs through hanger plate (1) and with lifting hook (14) fixed connection, lifting hook (14) hook tip department fixedly connected with activity rope (7), hanger plate (1) one side is provided with the receive and release subassembly that is used for receiving and releasing activity rope (7), receive and release subassembly connection behind the front side and the upside of lifting hook (14) and slide (3) are walked around to activity rope (7) one end.

2. The automatic unhooking device according to claim 1, wherein an installation cavity (2) is formed in the hanging plate (1), the sliding plate (3) is slidably arranged in the installation cavity (2), an installation opening (8) penetrating through the side wall of the sliding plate (3) is formed in the sliding plate (3), a reset component is arranged in the installation opening (8) and used for achieving lifting of the sliding plate (3), a first limiting block (5) is fixedly arranged on the side wall of the sliding plate (3), a first limiting groove (6) is formed in the inner wall of the installation cavity (2), and the first limiting block (5) is slidably arranged in the first limiting groove (6).

3. An automatic unhooking device according to claim 2, characterized in that the side edges of the slide plate (3) and the lifting hook (14) are provided with a placing groove (4) for placing the movable rope (7).

4. An automatic unhooking device according to claim 3, characterized in that the winding and unwinding assembly comprises a rope wheel (12) rotatably arranged on the rear side wall of the hanger plate (1), a through hole (11) positioned above the first limit groove (6) is formed in the rear side wall of the hanger plate (1), the through hole (11) is communicated with the middle part of the installation cavity (2), one end of the movable rope (7) penetrates through the through hole (11) and is fixedly connected with the rope wheel (12), and a driving device (13) for driving the rope wheel (12) to rotate is arranged on the rear side of the hanger plate (1).

5. The automatic unhooking device according to claim 4, wherein the driving device comprises an outer shaft (131), an inner shaft (132) and a limiting plate (135), the limiting plate (135) is fixedly arranged on the side wall of the hanging plate (1), the outer shaft (131) penetrates through the limiting plate (135) and is rotationally connected with the limiting plate (135), one end of the outer shaft (131) is fixedly connected with the rope pulley (12), the inner shaft (132) is arranged in the outer shaft (131) in a sliding manner, the inner shaft (132) penetrates through one end of the outer shaft (131) far away from the rope pulley (12) and is fixedly connected with a handle (138), a clamping plate (139) positioned between the handle (138) and the limiting plate (135) is fixedly arranged on the outer wall of the outer shaft (131), a limiting post (137) is arranged on the clamping plate (139), a limiting hole (136) corresponding to the limiting post (137) is arranged on the limiting plate (135), and the limiting post (137) can be inserted into the limiting hole (136).

6. An automatic unhooking device according to claim 3, characterized in that the retraction assembly comprises a strip inner sliding hole (19) arranged at the rear side of the sliding plate (3), the upper end of the strip inner sliding hole (19) is communicated with the placing groove (4), a movable rod (20) is arranged in the strip inner sliding hole (19) in a sliding way up and down manner, the movable rod (20) is fixedly connected with the movable rope (7), a strip outer sliding hole (23) is arranged on the outer side wall of the hanging plate (1), two ends of the movable rod (20) penetrate through the strip outer sliding hole (23) and are in sliding connection with the strip outer sliding hole (23), a clamping jaw (21) is rotatably arranged on the outer wall of the hanging plate (1), a bayonet (26) corresponding to the movable rod (20) is arranged at the lower end of the clamping jaw (21), and a torsion spring (27) is arranged on a connecting shaft between the hanging plate (1) and the clamping jaw (21).

7. An automatic unhooking device according to claim 6, characterized in that the hanger plate (1) and the claw (21) are provided with corresponding insertion holes (28) for inserting the setting pins (22), and the claw (21) can be fixed to the hanger plate (1) through the positioning pins (22).

8. The automatic unhooking device according to claim 2, wherein the reset assembly comprises a reset spring (9) and a stop block (10) which are positioned in the mounting opening (8), the upper end and the lower end of the reset spring (9) are fixedly connected with the upper wall of the mounting opening (8) and the stop block (10) respectively, the stop block (10) penetrates through the lower end part of the mounting opening (8) and is movably connected with the mounting opening (8), and two ends of the stop block (10) are fixedly connected with the inner wall of the mounting cavity (2).

9. An automatic unhooking device according to claim 3, characterized in that the first limiting blocks (5) are fixedly arranged on the front side and the rear side of the sliding plate (3), and the first limiting blocks (5) are symmetrically arranged on the two sides of the placing groove (4).