A hook device for a vehicle-mounted crane

Abstract

The utility model provides a kind of vehicle-mounted crane hook device, including first rotating component, second rotating component and connecting shaft, first rotating component includes first end cover, first connecting piece and nut, second rotating component includes second end cover, second connecting piece and bearing, nut is corresponding in first installation cavity, connecting shaft is threadedly connected with first connecting piece and upper end is corresponding in first installation cavity, the upper end of connecting shaft is threadedly connected with nut, connecting shaft lower end is rotatably installed on bearing, support boss is corresponding in second installation cavity and upper end surface is in contact with the lower end surface of bearing, the advantage of the design is that: by being able to relatively rotate first rotating component and second rotating component, so that when rotating component, mainly rely on the relative angular position change of first rotating component and second rotating component is realized, not only can more flexibly adjust the angle of object, but also can reduce the damage to sling, improve the service life of sling.

Description

Technical Field

[0001] This utility model relates to the field of vehicle-mounted cranes, and in particular to a vehicle-mounted crane hook device. Background Technology

[0002] Vehicle-mounted cranes are used to easily lift heavy objects and place them on the trunk of a vehicle. However, in actual operation, when the object to be lifted is irregularly shaped, the trunk space is limited, or it is necessary to arrange the object with other items in the trunk to save space, the object must be rotated at a certain angle to ensure it is smoothly lowered into the trunk and properly placed. To meet this rotation requirement, the sling connecting the crane and the object can be twisted temporarily due to its flexibility, allowing the object to be adjusted in angle during lifting, thus temporarily meeting operational needs. However, it is important to note that the sling is designed primarily to withstand vertical tension, not continuous torsional stress. If the sling is frequently twisted over a long period to rotate the object, it will cause serious damage to the internal structure of the sling: the fibers or wires inside the sling will wear and fatigue due to repeated twisting, and the originally tight weave or connection structure will gradually loosen, leading to a significant decrease in the sling's load-bearing capacity. With increased use, this damage will accumulate, eventually easily leading to a sling breakage accident. Therefore, it is necessary to develop a vehicle-mounted crane hook device to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a vehicle-mounted crane hook device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A vehicle-mounted crane hook device includes a first rotating assembly, a second rotating assembly, and a connecting shaft. The first rotating assembly includes a first end cap, a first connector, and a nut. The upper end of the first end cap has a first through hole, and the lower end of the first end cap is fixed above the first connector by screws. The upper middle part of the first connector has a first mounting cavity, and the nut corresponds to the first mounting cavity. The connecting shaft is threaded to the first connector, and its upper end corresponds to the first mounting cavity. The upper end of the connecting shaft is threaded to the nut, and the lower outer periphery of the connecting shaft has a support boss. The second rotating assembly includes a second end cap, a second connector, and a bearing. The lower end of the second end cap has a second through hole, and the upper end of the second end cap is fixed below the second connector by screws. The lower middle part of the second connector has a second mounting cavity, and the bearing is fixed in the second mounting cavity. The lower end of the connecting shaft is rotatably mounted on the bearing, and the support boss corresponds to the second mounting cavity, with its upper surface contacting the lower surface of the bearing.

[0006] Further description of the present invention: The first rotating assembly further includes a limiting ring, the upper end of which is fixed to the lower end of the first connecting member, and the limiting ring corresponds to the outer periphery of the second connecting member.

[0007] Further description of this utility model: It also includes a lower sling and a lower hook. The upper end of the lower sling is fixed on the second sling hole, and the upper end of the lower hook is fixed to the lower end of the lower sling. The lower end of the lower hook is provided with a hook portion.

[0008] Further description of the present invention: It also includes an upper sling, the lower end of which is fixed to the first sling hole.

[0009] Further description of this utility model: The supporting boss is in the shape of a hexagonal prism.

[0010] The beneficial effects of this utility model are as follows: The assembly process of the first rotating component, the second rotating component, and the connecting shaft is as follows: First, the bearing is assembled in the second mounting cavity. Then, the connecting shaft is inserted into the first cavity after passing through the bearing. A nut is assembled at the upper end of the connecting shaft. Next, screws are used to fix the first end cap and the second end cap to the upper end of the first connector and the lower end of the second connector, respectively. This allows both the first rotating component and the second rotating component to rotate relative to the connecting shaft. The first and second strap holes are connected to the movable end of the crane and the object through the sling, respectively. When lifting the object, the angle of the object can be adjusted. The advantage of this design is that by setting up a first rotating component and a second rotating component that can rotate relative to each other, the rotation of the object is mainly achieved by the change in the relative angle position of the first rotating component and the second rotating component, while the sling does not twist significantly. This not only allows for more flexible adjustment of the object's angle but also reduces damage to the sling and increases its service life. Attached Figure Description

[0011] Figure 1 This is an overall structural diagram of the present invention;

[0012] Figure 2 This is an exploded structural diagram of the present invention;

[0013] Figure 3 This is a cross-sectional view of the present invention;

[0014] Explanation of reference numerals in the attached figures:

[0015] 1. First rotating assembly; 11. First end cap; 111. First strap hole; 12. First connector; 121. First mounting cavity; 13. Nut; 14. Limiting ring; 2. Second rotating assembly; 21. Second end cap; 211. Second strap hole; 22. Second connector; 221. Second mounting cavity; 23. Bearing; 3. Connecting shaft; 31. Support boss; 4. Lower strap; 5. Lower hook. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings:

[0017] like Figures 1 to 3 As shown, a vehicle-mounted crane hook device includes a first rotating assembly 1, a second rotating assembly 2, and a connecting shaft 3. The first rotating assembly 1 includes a first end cap 11, a first connecting member 12, and a nut 13. The upper end of the first end cap 11 is provided with a first threading hole 111, and the lower end of the first end cap 11 is fixed above the first connecting member 12 by screws. The upper middle part of the first connecting member 12 is provided with a first mounting cavity 121, and the nut 13 corresponds to the first mounting cavity 121. The connecting shaft 3 is threadedly connected to the first connecting member 12, and its upper end corresponds to the first mounting cavity 121. The upper end of the connecting shaft 3 is connected to the screw... The female 13 is threaded, and the lower outer periphery of the connecting shaft 3 is provided with a support boss 31. The second rotating assembly 2 includes a second end cover 21, a second connecting member 22 and a bearing 23. The lower end of the second end cover 21 is provided with a second through hole 211. The upper end of the second end cover 21 is fixed to the lower part of the second connecting member 22 by screws. The lower middle part of the second connecting member 22 is provided with a second mounting cavity 221. The bearing 23 is fixed in the second mounting cavity 221. The lower end of the connecting shaft 3 is rotatably mounted on the bearing 23. The support boss 31 corresponds to the second mounting cavity 221 and its upper end face contacts the lower end face of the bearing 23.

[0018] The assembly process of the first rotating assembly 1, the second rotating assembly 2, and the connecting shaft 3 is as follows: First, the bearing 23 is assembled in the second mounting cavity 221. Then, the connecting shaft 3 is inserted into the first cavity after passing through the bearing 23. A nut 13 is assembled at the upper end of the connecting shaft 3. Next, screws are used to fix the first end cap 11 and the second end cap 21 to the upper end of the first connecting member 12 and the lower end of the second connecting member 22, respectively. This allows both the first rotating assembly 1 and the second rotating assembly 2 to rotate relative to the connecting shaft. The first strap hole 111 and the second strap hole 211 are connected to the movable end of the crane and the object respectively through the sling. When lifting the object, the angle of the object can be adjusted. The advantage of this design is that by setting the first rotating assembly 1 and the second rotating assembly 2, which can rotate relative to each other, the rotation of the object is mainly achieved by the change in the relative angle position of the first rotating assembly 1 and the second rotating assembly 2, while the sling does not twist significantly. This not only allows for more flexible adjustment of the object's angle but also reduces damage to the sling and increases its service life.

[0019] The first rotating assembly 1 further includes a limiting ring 14, the upper end of which is fixed to the lower end of the first connecting member 12, and the limiting ring 14 corresponds to the outer periphery of the second connecting member 22. The limiting ring 14 can limit the relative swing angle of the first rotating assembly 1 and the second rotating assembly 2 in the vertical direction, that is, it can better enable the first rotating assembly 1 and the second rotating assembly 2 to rotate relative to each other in the vertical direction.

[0020] This design also includes a lower sling 4 and a lower hook 5. The upper end of the lower sling 4 is fixed to the second sling hole 211, and the upper end of the lower hook 5 is fixed to the lower end of the lower sling 4. The lower end of the lower hook 5 is provided with a hook. The second rotating assembly 2 is connected to the lower hook 5 through the lower sling 4. The lower hook 5 is used to hang objects.

[0021] This design also includes an upper sling, the lower end of which is fixed to the first sling hole 111. The first rotating assembly 1 is connected to the movable end of the crane via the upper sling.

[0022] The support boss 31 is hexagonal prism in shape. This allows for easy rotation of the connecting shaft 3 using tools such as wrenches, facilitating the assembly and disassembly of the connecting shaft 3, and making it easy to adjust the relative position of the connecting shaft 3 and the nut 13.

[0023] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A vehicle-mounted crane hook device, characterized in that: The assembly includes a first rotating component, a second rotating component, and a connecting shaft. The first rotating component includes a first end cap, a first connector, and a nut. The upper end of the first end cap has a first threading hole, and the lower end of the first end cap is fixed to the upper part of the first connector by screws. The upper part of the first connector has a first mounting cavity, and the nut corresponds to the first mounting cavity. The connecting shaft is threaded to the first connector, and its upper end corresponds to the first mounting cavity. The upper end of the connecting shaft is threaded to the nut, and the lower end of the connecting shaft has a supporting boss on its outer periphery. The second rotating component includes a second end cap, a second connector, and a bearing. The lower end of the second end cap has a second threading hole, and the upper end of the second end cap is fixed to the lower part of the second connector by screws. The lower end of the second connector has a second mounting cavity, and the bearing is fixed in the second mounting cavity. The lower end of the connecting shaft is rotatably mounted on the bearing, and the supporting boss corresponds to the second mounting cavity, with its upper surface contacting the lower surface of the bearing.

2. The vehicle-mounted crane hook device according to claim 1, characterized in that: The first rotating assembly further includes a limiting ring, the upper end of which is fixed to the lower end of the first connecting member, and the limiting ring corresponds to the outer periphery of the second connecting member.

3. The vehicle-mounted crane hook device according to claim 1, characterized in that: It also includes a lower sling and a lower hook. The upper end of the lower sling is fixed to the second sling hole, and the upper end of the lower hook is fixed to the lower end of the lower sling. The lower end of the lower hook is provided with a hook portion.

4. The vehicle-mounted crane hook device according to claim 1, characterized in that: It also includes an upper sling, the lower end of which is fixed to the first sling hole.

5. The vehicle-mounted crane hook device according to claim 1, characterized in that: The supporting boss is in the shape of a hexagonal prism.

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