Packaging box lifting appliance capable of rapidly adjusting mass center

Abstract

The utility model relates to a packaging box lifting appliance capable of quickly adjusting the mass center, and belongs to the technical field of packaging box lifting appliances. A packaging box lifting appliance capable of rapidly adjusting the mass center comprises a lifting ring, a chain, a shackle and a lifting belt and further comprises a stepless mass center fine adjustment mechanism, and the stepless mass center fine adjustment mechanism comprises an installation fixing device, a rotating device, a transmission device and a lifting hook device; the mounting and fixing device provides mounting support for the rotating device, the transmission device and the lifting hook device; the rotating device rotates under the action of the transmission device, and one end of the lifting belt is fixedly connected with the rotating device; the hook device is used for hoisting packaging boxes; when the transmission device is adjusted, the rotating device rotates along with the transmission device, the lifting belt is wound around the rotating device, and then the packaging box is adjusted to be in the horizontal state. The utility model has the advantages that: 1, the hoisting mass center of the packaging box can be quickly adjusted; 2, stepless fine adjustment of the hoisting mass center of the packaging box is realized, so that the packaging box quickly reaches a horizontal state;

Description

Technical Field

[0001] This utility model relates to a packaging box lifting device with a rapidly adjustable center of gravity, belonging to the technical field of packaging box lifting devices. Background Technology

[0002] Currently, missile packaging boxes are lifted and transferred using packaging box lifting devices. The structure of these devices is generally a combination of high-fiber lifting straps, chains, and chain adjusting rings. The lifting center of gravity can be adjusted by adjusting the position of the chain on the chain adjusting rings. However, the adjustment of the center of gravity must be carried out when the packaging box lifting device is not under stress. Therefore, it is necessary to lift the packaging box repeatedly to adjust it to a horizontal position, which is time-consuming. Summary of the Invention

[0003] The purpose of this invention is to provide a packaging box lifting device that can quickly adjust the center of gravity, allowing for stepless fine-tuning of the center of gravity of the packaging box while it is being lifted, so that the packaging box can quickly reach a horizontal state.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a packaging box lifting device with a rapidly adjustable center of gravity, including a lifting ring, a chain, a shackle, and a lifting strap, and further including a stepless fine-tuning center of gravity mechanism. The stepless fine-tuning center of gravity mechanism includes a mounting and fixing device, a rotating device, a transmission device, and a hook device. The mounting and fixing device provides mounting support for the rotating device, the transmission device, and the hook device. The rotating device rotates under the action of the transmission device, and one end of the lifting strap is connected and fixed to the rotating device. The hook device is used to lift the packaging box. When the transmission device is adjusted, the rotating device rotates accordingly, causing the lifting strap to wrap around the rotating device, thereby adjusting the packaging box to a horizontal state.

[0005] Preferably, the mounting and fixing device includes a fixing frame, which includes a base plate and oppositely arranged side plates; the transmission device includes a rotating shaft with a worm gear and a worm with a handwheel, the worm gear and the worm meshing with each other; both ends of the rotating shaft with the worm gear are respectively mounted on the side plates, and the bottom of the worm with the handwheel is mounted on the base plate; when the handwheel is rotated, the worm with the handwheel rotates synchronously, thereby causing the rotating shaft with the worm gear to rotate synchronously; the rotating device is mounted and fixed on the rotating shaft with the worm gear.

[0006] Preferably, the rotating device includes a lifting belt adjusting plate and a quick-release stop pin; there are two lifting belt adjusting plates, which are arranged opposite each other, and the center of each plate is fixed to the rotating shaft of the transmission device. Both plates have through holes on both sides of their center to accommodate the quick-release stop pin, which confines the two lifting belt adjusting plates together; one end of the lifting belt is connected to the quick-release stop pin.

[0007] Preferably, the hook device includes a hook fixing frame and a hook; one end of the hook fixing frame is connected to the rotating shaft of the transmission device and can rotate around the rotating shaft of the transmission device, and the other end of the hook fixing frame is connected and fixed to the hook.

[0008] Preferably, there are two hook fixing brackets, which are arranged opposite each other. The ends of the two brackets are connected and fixed to the hook by quick-release stop pins, which pass through the ends of the two hook fixing brackets.

[0009] Preferably, a deep groove ball bearing is provided between the hook fixing frame and the rotating shaft of the transmission device.

[0010] Preferably, a bearing cover plate is installed on the outside of the deep groove ball bearing.

[0011] Furthermore, it also includes a shaft elastic retaining ring, which is installed at the mounting end of the shaft with the worm gear near the fixed frame to limit the movement of the fixed frame.

[0012] Preferably, the lifting ring has a "mountain" shaped structure, through which the chain passes, and its two ends are connected to one end of the lifting belt via shackles.

[0013] Working principle: The initial adjustment of the lifting center of gravity of the packaging box is achieved by adjusting the position of the chain on the chain adjusting ring, and the stepless fine adjustment of the lifting center of gravity of the packaging box is achieved by rotating the handwheel.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. Enables rapid adjustment of the lifting center of gravity of packaging boxes;

[0016] 2. It achieves stepless fine-tuning of the lifting center of gravity of the packaging box, enabling the packaging box to quickly reach a horizontal state. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the continuously adjustable centroid mechanism in an embodiment of this utility model;

[0019] Figure 3 yes Figure 2 AA view;

[0020] Figure 4 This is a schematic diagram of the worm gear fixing frame structure;

[0021] Figure 1 In the middle, 1-chain adjusting ring, 5-chain, 3-shackle, 4-lifting sling, 5-infinitely variable adjustment center of gravity mechanism.

[0022] Figure 1-4In the middle section, 5-1, worm gear fixing bracket, 5-2, lifting belt adjusting plate, 5-3, quick-release stop pin, 5-4, quick-release stop pin, 5-5, hook, 5-6, rotating shaft with worm gear, 5-7, worm gear with handwheel, 5-8, hook fixing bracket, 5-9, hook fixing bracket, 5-10, deep groove ball bearing, 5-11, bearing cover plate, 5-12, elastic retaining ring for shaft. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1-4 The present invention will be further described in detail as follows: A packaging box lifting device with a rapidly adjustable center of gravity, such as... Figure 1 As shown, it consists of a chain adjusting ring 1, two chains 2, four shackles 3, four lifting straps 4, and four continuously variable adjustment center of gravity mechanisms 5; the chain adjusting ring 1 has a "mountain" shaped structure, through which the two chains 2 pass respectively, and the two ends of the chains 2 are connected to one end of the lifting straps 4 through the shackles 3, and the other end of the lifting straps 4 is connected to the continuously variable adjustment center of gravity mechanism 5.

[0024] 5-step fine-tuning center of mass mechanism Figure 2 As shown, the system consists of a worm gear fixing frame 5-1, a lifting belt adjusting plate 5-2, quick-release stop pins 5-3 and 5-4, a hook 5-5, a worm gear rotating shaft 5-6, a worm gear with a handwheel 5-7, a hook fixing frame 5-8 and 5-9, a deep groove ball bearing 5-10, a bearing cover plate 5-11, and a shaft elastic retaining ring 5-12. The worm gear rotating shaft 5-6 passes through the worm gear fixing frame 5-1 and is limited by two shaft elastic retaining rings 5-12. Two lifting belt adjusting plates 5-2 are welded to the worm gear rotating shaft 5-6. Two quick-release stop pins 5-3 pass through the two lifting belt adjusting plates 5-5 respectively. The adjustment plate 5-2 has a through hole. One end of the hook fixing bracket 5-8 and hook fixing bracket 5-9 passes through the rotating shaft 5-6 with a worm gear, and the other end is hinged to the hook 5-5 through the quick-release stop pin 5-4. A deep groove ball bearing 5-10 is installed between the rotating shaft 5-6 with the worm gear and the hook fixing brackets 5-8 and 5-9 to reduce the friction between them and make their relative rotation smoother. The worm gear 5-7 with a handwheel passes through the worm gear fixing bracket 5-1 and is fixed to it. At the same time, it cooperates with the worm gear on the rotating shaft 5-6 with the worm gear to realize transmission.

[0025] The worm gear fixing bracket 5-1 structure is as follows Figure 4 As shown, it has two sets of through holes, which pass through the rotating shaft 5-6 with the worm gear and the worm gear 5-7 with the handwheel, respectively.

[0026] Lifting the Packaging Box: Hoist the packaging box lifting device to directly above the packaging box. Hook the hooks 5-5 of the four continuously variable fine-tuning center of gravity mechanisms 5 onto the four lifting rings of the packaging box. Adjust the position of the chain on the chain adjusting ring according to the center of gravity marking on the packaging box, so that the chain adjusting ring 1 is directly above the center of gravity marking on the packaging box. Operate the crane to slowly lift the packaging box off the ground. Adjust the handwheels on the two worm gears 5-7 with handwheels in the downward direction of the packaging box, drive the lifting belt adjusting plate 5-2 to rotate, so that the lifting belt 4 is wrapped around the two quick-release stop pins 5-3. As the lifting belt 4 continuously shortens, adjust the packaging box to a horizontal state. After the packaging box is transferred, remove the packaging box lifting device, loosen the two quick-release stop pins 5-3 wrapped by the lifting belt 4, restore the lifting belt 4, and reinstall the quick-release stop pins 5-3.

Claims

1. A packaging box lifting device with a quickly adjustable center of gravity, comprising lifting rings, chains, shackles, and lifting straps, characterized in that: It also includes a continuously variable adjustment center of gravity mechanism, which includes a mounting and fixing device, a rotating device, a transmission device, and a hook device; the mounting and fixing device provides mounting support for the rotating device, the transmission device, and the hook device; the rotating device rotates under the action of the transmission device, and one end of the lifting strap is connected and fixed to the rotating device; the hook device is used to lift the packaging box; when the transmission device is adjusted, the rotating device rotates accordingly, so that the lifting strap is wrapped around the rotating device, thereby adjusting the packaging box to a horizontal state.

2. The packaging box lifting device with rapidly adjustable center of gravity according to claim 1, characterized in that: The mounting and fixing device includes a fixing frame, which includes a base plate and oppositely arranged side plates; the transmission device includes a rotating shaft with a worm gear and a worm with a handwheel, the worm gear and the worm meshing with each other; the two ends of the rotating shaft with the worm gear are respectively mounted on the two side plates, and the bottom of the worm with the handwheel is mounted on the base plate; when the handwheel is rotated, the worm with the handwheel rotates synchronously, thereby causing the rotating shaft with the worm gear to rotate synchronously; the rotating device is mounted and fixed on the rotating shaft with the worm gear.

3. The packaging box lifting device with rapidly adjustable center of gravity according to claim 1 or 2, characterized in that: The rotating device includes a lifting belt adjusting plate and a quick-release stop pin; there are two lifting belt adjusting plates, which are arranged opposite each other. The center of each plate is fixed to the rotating shaft of the transmission device, and through holes are opened on both sides of the center of each plate to accommodate the quick-release stop pin. The quick-release stop pin limits the two lifting belt adjusting plates together; one end of the lifting belt is connected to the quick-release stop pin.

4. The packaging box lifting device with rapidly adjustable center of gravity according to claim 1 or 2, characterized in that: The hook device includes a hook fixing frame and a hook; one end of the hook fixing frame is connected to the rotating shaft of the transmission device and can rotate around the rotating shaft of the transmission device, and the other end of the hook fixing frame is connected and fixed to the hook.

5. The packaging box lifting device with rapidly adjustable center of gravity according to claim 4, characterized in that: There are two hook fixing brackets, which are set opposite each other. The ends of the two brackets are connected and fixed to the hook by quick-release stop pins, which pass through the ends of the two hook fixing brackets.

6. The packaging box lifting device with rapidly adjustable center of gravity according to claim 4, characterized in that: A deep groove ball bearing is installed between the hook fixing frame and the rotating shaft of the transmission device.

7. The packaging box lifting device with rapidly adjustable center of gravity according to claim 6, characterized in that: A bearing cover plate is installed on the outside of the deep groove ball bearing.

8. The packaging box lifting device with rapidly adjustable center of gravity according to claim 2, characterized in that: It also includes a shaft elastic retaining ring, which is installed at the mounting end of the shaft with worm gear near the fixed frame to limit the movement of the fixed frame.

9. The packaging box lifting device with rapidly adjustable center of gravity according to claim 1, characterized in that: The lifting ring has a "mountain" shaped structure. The chain passes through this structure on the lifting ring, and its two ends are connected to one end of the lifting sling by shackles.

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