Automatic unhooking lifting hook of crane

Abstract

The utility model discloses an automatic unhooking lifting hook of a crane, and relates to the technical field of automatic unhooking lifting hooks of cranes, in particular to the automatic unhooking lifting hook of the crane, which comprises a suspension arm, a bayonet disc and a lifting hook, a mounting block and a placing block are fixedly mounted on the side surface of the suspension arm, and a connecting bolt is in threaded connection between the mounting block and the placing block; a rotating block is rotationally connected to the connecting bolt, a nut is in threaded connection with the end of the connecting bolt, a locking plate is arranged on the placing block, a locking block is fixedly connected to the bottom of the rotating block, a connecting column is fixedly connected to the bottom of the bayonet disc, rotating columns are fixedly installed on the front face and the rear face of the lifting hook, and an anti-disengaging frame is rotationally connected to the rotating columns; a sleeve is fixedly connected to the bottom end of the anti-falling frame, a telescopic rod is slidably connected to the end of the sleeve, an anti-skid pad is fixedly connected to the end of the telescopic rod, a convex edge is arranged on the inner side of the lifting hook, the distance between the anti-falling assembly and the lifting hook can be freely adjusted through arrangement of the anti-falling assembly, and rotation of the lifting hook can be effectively prevented through arrangement of the anti-rotation assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic detachable hooks for cranes, in particular to an automatic detachable hook for cranes. Background Art

[0002] The hooking and unhooking of the crane hoisting hook needs to be done manually, which is not only labor-intensive but also complicated to operate. It often requires multiple people to complete it, which wastes physical strength and poses great safety hazards. The traditional automatic hooking and unhooking hoisting device has a complex structure and high cost, which is not conducive to promotion and use.

[0003] A self-hanging and detaching hook for a crane is disclosed in the specification of Chinese utility model patent application CN212863833U. Although the self-hanging and detaching hook for a crane has the advantages of realizing automatic hanging and detaching, convenient operation, and effectively avoiding unhooking, the self-hanging and detaching hook for a crane still has disadvantages: first, the self-hanging and detaching hook for a crane adopts a motor in combination with a double hook to prevent unhooking, but in actual use, the motor needs to be connected to an external power supply. During the lifting process of the crane, the external power cord may be entangled with the lifted goods, thereby causing unnecessary trouble; second, during the lifting process of the self-hanging and detaching hook for a crane, the bottom hook may swing left and right due to inertia. After long-term use, the connecting bolts between the self-hanging and detaching hook and the boom may become loose easily, and need to be retightened from time to time, otherwise it is easy to fail and cause an accident. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides an automatic detachable hook for a crane, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: an automatic detachable hook of a crane, comprising a boom, a bayonet plate and a hook, a mounting block and a placement block are fixedly installed on the side of the boom, a connecting bolt is threadedly connected between the mounting block and the placement block, a rotating block is rotatably connected to the connecting bolt, a nut is threadedly connected to the end of the connecting bolt, a locking plate is provided on the placement block, a locking block is fixedly connected to the bottom of the rotating block, a connecting column is fixedly connected to the bottom of the bayonet plate, a rotating column is fixedly installed on the front and rear surfaces of the hook, an anti-detachment frame is rotatably connected to the rotating column, a sleeve is fixedly connected to the bottom end of the anti-detachment frame, a telescopic rod is slidably connected to the end of the sleeve, an anti-slip pad is fixedly connected to the end of the telescopic rod, and a convex edge is provided on the inner side of the hook.

[0008] Optionally, the bayonet plate is fixedly mounted on the bottom of the boom, the hook is fixedly mounted on the bottom of the connecting column, a slot is provided on the side of the bayonet plate, and the locking block is clamped inside the slot.

[0009] Optionally, a threaded column is fixedly connected to the top of the bayonet plate, a threaded groove is provided at the bottom of the boom, and the bayonet plate is fixedly installed on the bottom of the boom by threading the threaded column at the top into the inside of the threaded groove.

[0010] Optionally, the installation block, placement block, rotation block and locking plate are symmetrically arranged in two groups on the left and right sides of the boom, the placement block is U-shaped, and the locking plate is L-shaped.

[0011] Optionally, the long side of the locking plate is clamped in the U-shaped groove of the placement block, the front side of the locking plate is threadedly connected with a fixing screw, and the locking plate is fixedly connected to the front side of the mounting block by the fixing screw.

[0012] Optionally, a mounting groove is provided at the bottom end of the anti-detachment frame, one end of the sleeve is fixedly installed inside the mounting groove, a through groove is provided inside the sleeve, a reset spring is fixedly installed on the inner bottom of the through groove, and the top end of the telescopic rod is fixedly connected to the end of the reset spring.

[0013] Optionally, the sleeve and the telescopic rod are symmetrically arranged in two groups, front and rear, and the anti-skid pad is fixedly mounted on the bottom ends of the two front and rear telescopic rods. The anti-skid pad is arranged in a trapezoidal shape, and the oblique edge of the anti-skid pad is clamped on the convex edge.

[0014] (III) Beneficial effects

[0015] The utility model provides an automatic detachable hook for a crane, which has the following beneficial effects:

[0016] 1. The automatic detachable hook of the crane has the effect of adjusting the limit between the anti-detachment component and the hook through the setting of multiple convex edges. Through the coordinated setting of the anti-detachment frame and the telescopic rod, the hook can be adjusted to multiple limits through the telescopic rod during use to prevent it from falling off, thereby playing a role of simple structure and obvious effect, and achieving the purpose of improving the use efficiency.

[0017] 2. The automatic detachable hook of the crane has the effect of fixing the rotating block through the setting of the locking piece. Through the matching setting of the locking block and the bayonet disk, the bayonet disk can be fixed by the locking block being connected to the inside of the card slot during use, thereby effectively preventing the bayonet disk from rotating during use and achieving the purpose of improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the bottom of the utility model;

[0020] Figure 3 This is a schematic diagram of the main structure of the utility model;

[0021] Figure 4 This is a side view of the structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the connection mechanism of the utility model;

[0023] Figure 6 It is a schematic diagram of the structure of the anti-slip mechanism of the utility model.

[0024] In the figure: 1. boom; 2. bayonet plate; 3. hook; 4. mounting block; 5. placement block; 6. rotating block; 7. connecting bolt; 8. nut; 9. locking plate; 10. fixing screw; 11. locking block; 12. slot; 13. threaded groove; 14. threaded column; 15. connecting column; 16. rotating column; 17. anti-slip frame; 18. sleeve; 19. telescopic rod; 20. anti-slip pad; 21. convex edge; 22. mounting slot; 23. through slot; 24. reset spring. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Embodiment 1:

[0027] See also Figures 1 to 6The utility model provides a technical solution: an automatic detachable hook of a crane, comprising a boom 1, a bayonet plate 2 and a hook 3, a threaded column 14 is fixedly connected to the top of the bayonet plate 2, a threaded groove 13 is provided at the bottom of the boom 1, the bayonet plate 2 is threadedly connected to the inside of the threaded groove 13 through the threaded column 14 at the top and is fixedly installed on the bottom of the boom 1, the bayonet plate 2 is fixedly installed on the bottom of the boom 1, the hook 3 is fixedly installed on the bottom of the connecting column 15, a slot 12 is provided on the side of the bayonet plate 2, a locking block 11 is clamped in the inside of the slot 12, the threaded column 14 cooperates with the threaded groove 13 so that the bayonet plate 2 can be easily and simply assembled and disassembled on the boom 1, and a mounting block 4 and a placement block 5 are fixedly installed on the side of the boom 1. A connecting bolt 7 is threadedly connected between the mounting block 4 and the placement block 5, a rotating block 6 is rotatably connected to the connecting bolt 7, a nut 8 is threadedly connected to the end of the connecting bolt 7, and a locking plate 9 is provided on the placement block 5. The mounting block 4, the placement block 5, the rotating block 6 and the locking plate 9 are all symmetrically arranged in two groups on the left and right sides of the boom 1. The placement block 5 is U-shaped, and the locking plate 9 is L-shaped. The long side of the locking plate 9 is clamped in the U-shaped groove of the placement block 5. The front side of the locking plate 9 is threadedly connected with a fixing screw 10, and the locking plate 9 is fixedly connected to the front side of the mounting block 4 by the fixing screw 10. The setting of the locking plate 9 can ensure the fixation of the rotating block 6, and the bottom of the rotating block 6 is fixedly connected with a locking block 11, and the bottom of the bayonet disk 2 is fixedly connected with a connecting column 15.

[0028] When using the crane to automatically detach the hook, first, the threaded column 14 is threadedly connected to the threaded groove 13, so that the bayonet plate 2 and the bottom hook assembly are fixedly installed on the bottom of the boom 1, and then the rotating block 6 is rotated to make the locking block 11 at the bottom be engaged with the inside of the slot 12, and then the nut 8 is threadedly connected to the connecting bolt 7 to lock the rotating block 6, and then the long side of the locking plate 9 is placed in the U-shaped groove of the placement block 5 so that its short side faces downward, and then the fixing screw 10 is threadedly connected and screwed on the front side of the locking plate 9 to fix the rotating block 6 again. At this time, the installation of the overall anti-rotation assembly can be completed, and then the lifting rope is placed in the hook 3, and the lifting operation can be carried out. The locking block 11 is stuck in the slot 12 of the bayonet plate 2, which can effectively prevent the bottom hook 3 from rotating during operation. It is very convenient to use and easy to operate.

[0029] Embodiment 2:

[0030] See also Figures 1 to 6The utility model provides a technical solution: a crane automatically detachable hook, the front and rear surfaces of the hook 3 are fixedly installed with a rotating column 16, the rotating column 16 is rotatably connected with an anti-detachment frame 17, the bottom end of the anti-detachment frame 17 is fixedly connected with a sleeve 18, the bottom end of the anti-detachment frame 17 is provided with a mounting groove 22, one end of the sleeve 18 is fixedly installed inside the mounting groove 22, the sleeve 18 is provided with a through groove 23, a reset spring 24 is fixedly installed on the inner bottom of the through groove 23, the top end of the telescopic rod 19 is fixedly connected to the end of the reset spring 24, the reset spring 24 cooperates with the telescopic rod 19 to release the reset spring 24. The setting of the retractable rod 19 can make the anti-slip component adjustable, which is very convenient to use. The end of the sleeve 18 is slidably connected to the telescopic rod 19, and the end of the telescopic rod 19 is fixedly connected to the anti-skid pad 20. The inner side of the hook 3 is provided with a convex edge 21. The sleeve 18 and the telescopic rod 19 are symmetrically arranged in two groups, front and rear. The anti-skid pad 20 is fixedly installed on the bottom ends of the front and rear telescopic rods 19. The anti-skid pad 20 is arranged in a trapezoidal shape, and the hypotenuse of the anti-skid pad 20 is stuck on the convex edge 21. The setting of the anti-skid pad 20 and multiple convex edges 21 can enable the telescopic rod 19 to be stuck inside the hook 3.

[0031] When the crane is used to automatically detach the hook, when the installation of the overall anti-rotation assembly is completed, the anti-slip frame 17 can be manually rotated downward to drive the sleeve 18, the telescopic rod 19 and the anti-skid pad 20 to rotate inward. At this time, the distance between the anti-skid pad 20 and the hook 3 will become larger, and the return spring 24 inside the through groove 23 will prompt the telescopic rod 19 to extend, so that the anti-skid pad 20 can pass over the second and third convex edges 21. At this time, the lifting rope can be placed on the inner side of the hook 3, and then the anti-slip frame 17 can be rotated upward so that the anti-skid pad 20 rotates upward and contacts with the convex edge 21. It can be adjusted according to the gap between the hook 3 and the anti-slip frame 17, which can effectively ensure that the internal lifting rope will not slide on the hook 3 at will. It is very convenient to use and has high practicality.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic detachable hook for a crane, comprising a boom (1), a bayonet plate (2) and a hook (3), characterized in that: A mounting block (4) and a placement block (5) are fixedly mounted on the side of the boom (1); a connecting bolt (7) is threadedly connected between the mounting block (4) and the placement block (5); a rotating block (6) is rotatably connected to the connecting bolt (7); a nut (8) is threadedly connected to the end of the connecting bolt (7); a locking plate (9) is provided on the placement block (5); a locking block (11) is fixedly connected to the bottom of the rotating block (6); a connecting column (15) is fixedly connected to the bottom of the bayonet plate (2); a rotating column (16) is fixedly mounted on the front and rear surfaces of the hook (3); an anti-slip frame (17) is rotatably connected to the rotating column (16); a sleeve (18) is fixedly connected to the bottom end of the anti-slip frame (17); a telescopic rod (19) is slidably connected to the end of the sleeve (18); an anti-slip pad (20) is fixedly connected to the end of the telescopic rod (19); and a convex edge (21) is provided on the inner side of the hook (3).

2. The automatic detachable hook of a crane according to claim 1, characterized in that: The bayonet plate (2) is fixedly mounted on the bottom of the boom (1), the hook (3) is fixedly mounted on the bottom of the connecting column (15), a slot (12) is provided on the side of the bayonet plate (2), and the locking block (11) is snap-fitted into the inside of the slot (12).

3. The automatic detachable hook of a crane according to claim 1, characterized in that: The top of the bayonet plate (2) is fixedly connected with a threaded column (14), the bottom of the boom (1) is provided with a threaded groove (13), and the bayonet plate (2) is fixedly mounted on the bottom of the boom (1) by threading the threaded column (14) at the top into the inside of the threaded groove (13).

4. The automatic detachable hook of a crane according to claim 1, characterized in that: The installation block (4), the placement block (5), the rotation block (6) and the locking plate (9) are all symmetrically arranged in two groups on the left and right sides of the suspension arm (1); the placement block (5) is U-shaped, and the locking plate (9) is L-shaped.

5. The automatic detachable hook of a crane according to claim 4, characterized in that: The long side of the locking plate (9) is clamped in the U-shaped groove of the placement block (5), the front side of the locking plate (9) is threadedly connected with a fixing screw (10), and the locking plate (9) is fixedly connected to the front side of the mounting block (4) by the fixing screw (10).

6. The automatic detachable hook of a crane according to claim 1, characterized in that: The bottom end of the anti-drop frame (17) is provided with a mounting groove (22), one end of the sleeve (18) is fixedly mounted inside the mounting groove (22), a through groove (23) is provided inside the sleeve (18), a return spring (24) is fixedly mounted on the inner bottom of the through groove (23), and the top end of the telescopic rod (19) is fixedly connected to the end of the return spring (24).

7. The automatic detachable hook of a crane according to claim 1, characterized in that: The sleeve (18) and the telescopic rod (19) are symmetrically arranged in two groups, front and rear, and the anti-skid pad (20) is fixedly mounted on the bottom ends of the two front and rear telescopic rods (19). The anti-skid pad (20) is arranged in a trapezoidal shape, and the oblique edge of the anti-skid pad (20) is clamped on the convex edge (21).

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