Battery pack lifting appliance

Abstract

The utility model relates to the technical field of battery pack lifting appliances, in particular to a battery pack lifting appliance which comprises a frame body, a plurality of lifting hooks are connected to the lower portion of the frame body, a chain piece is arranged on the frame body and comprises a lifting ring located above the frame body, and main lifting points are arranged at the four corners of the upper end face of the frame body. A plurality of main hanging points are arranged on the upper end face of the frame body, each main hanging point is connected with the hanging ring through a main hanging chain, a plurality of auxiliary hanging points which are arranged at equal angles are arranged on the upper end face of the frame body, the auxiliary hanging points are surrounded by the main hanging points, each auxiliary hanging point is connected with the hanging ring through an auxiliary chain, and when all the main hanging chains are tensioned, the auxiliary hanging points are in a non-stress state. When the main hanging chain is connected with the frame body and the hanging ring, the auxiliary chain is not stressed, if the main hanging chain is broken accidentally, the auxiliary chain is tensioned instantly, the protection effect is achieved, the safety in the hoisting process is improved, the maintenance frequency of the lifting appliance is reduced, and then the hoisting efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery pack lifting tools, and in particular to a battery pack lifting tool. Background Technology

[0002] Power batteries are power sources that provide power to tools, and often refer to batteries that power electric vehicles, electric trains, etc. Currently, power battery production lines generally use automation or special lifting equipment, which has safety vulnerabilities.

[0003] For example, a patent with publication number CN211004196U, entitled "A Battery Pack Lifting Fixture," was published on July 14, 2020. It includes: a lifting fixture body, a lifting fixture center of gravity adjustment mechanism, and a lifting fixture operating mechanism. The lifting fixture center of gravity adjustment mechanism can manually adjust the center of gravity according to the different center of gravity of different battery packs, so that the battery pack is lifted more stably. The lifting fixture operating mechanism can quickly clamp and release the battery pack with the lifting fixture. At the same time, the lifting fixture operating mechanism has a locking device to prevent the battery pack from falling due to accidental release. However, the applicant found that if there is a break between the lifting point of the hoist connecting the lifting fixture frame and the lifting fixture frame, there will be a safety problem and the lifting efficiency will be reduced. Summary of the Invention

[0004] In view of this, the purpose of this utility model is to propose a battery pack lifting device to solve the problem of poor safety performance.

[0005] To achieve the above objectives, this utility model provides a battery pack lifting device, including a frame body with multiple hooks connected to its lower part. A chain condition is provided on the frame body, including a lifting ring located above the frame body. Main lifting points are provided at the four corners of the upper surface of the frame body, and each main lifting point is connected to the lifting ring via a main suspension chain. Multiple secondary lifting points are provided on the upper surface of the frame body at equal angles, surrounded by multiple main lifting points. Each secondary lifting point is connected to the lifting ring via a secondary chain. When all the main suspension chains are taut, the secondary lifting points are in a stress-free state.

[0006] Optionally, the frame body includes a first frame and a second frame disposed under the first frame. The second frame includes two second crossbeams, and a second slide rail is disposed on the lower end face of the second crossbeam. At least two hooks are slidably connected to the second slide rail.

[0007] Optionally, the hook is slidably connected to the second slide rail via a connecting point, and a traction chain connects the hook and the connecting point.

[0008] Optionally, the hook includes a main board connected to the traction chain, a lower hanging plate is provided on one side of the main board, and an upper baffle connected to the main board is provided above the lower hanging plate. Both the lower hanging plate and the upper baffle are provided with first pin holes, the axes of the two first pin holes are aligned, and a first pin rod is provided in cooperation with the first pin holes. The first pin rod passes through the two first pin holes. A connecting rope located on one side of the traction chain is connected to the connecting point, and the lower end of the connecting rope is connected to the first pin rod.

[0009] Optionally, the second slide rail is provided with a plurality of second pin holes at equal intervals, and the connecting suspension point is provided with a second pin rod that cooperates with the second pin holes.

[0010] Optionally, the main lifting points are provided at both ends of the second crossbeam.

[0011] Optionally, the first frame includes a connecting frame and two first crossbeams respectively disposed on both sides of the connecting frame. The first crossbeams are perpendicular to the second crossbeams. A first slide rail is disposed on the first crossbeam and perpendicular to the second slide rail. A slider is slidably connected to the first slide rail and fixedly connected to the second crossbeam.

[0012] Optionally, the first slide rail is provided with a plurality of third pin holes at equal intervals, and the slider is provided with a third pin rod that cooperates with the third pin holes.

[0013] Optionally, multiple auxiliary suspension points are arranged at equal angles on the connecting frame.

[0014] The beneficial effects of this utility model are as follows: When the main suspension chain connects the frame body and the lifting ring, the secondary chain is not under stress. If the main suspension chain breaks accidentally, the secondary chain will tighten instantly to play a protective role, improve the safety of lifting, reduce the number of times the lifting device needs to be repaired, and thus improve the lifting efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0019] Figure 4 for Figure 1 A top-view structural diagram;

[0020] Figure 5 for Figure 1 Front view structural diagram;

[0021] Figure 6 for Figure 1 A schematic diagram of the left-side view structure;

[0022] Figure 7 This is a schematic diagram of the chain condition of this utility model.

[0023] In the diagram: 1. Frame body; 2. First frame; 3. First crossbeam; 4. Connecting frame; 5. First slide rail; 6. Slider; 7. Second frame; 8. Second crossbeam; 9. Second slide rail; 10. Linking lifting point; 11. Hook; 12. Traction chain; 13. Connecting rope; 14. Lifting ring; 15. Main suspension chain; 16. Secondary chain; 17. Main lifting point; 18. Secondary lifting point. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0025] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] like Figures 1 to 7As shown, a battery pack lifting device includes a frame body 1, with multiple hooks 11 connected to the bottom of the frame body 1. A chain condition is provided on the frame body 1, including a lifting ring 14 located above the frame body 1. Main lifting points 17 are provided at the four corners of the upper surface of the frame body 1, and each main lifting point 17 is connected to the lifting ring 14 via a main suspension chain 15. Multiple secondary lifting points 18 are provided on the upper surface of the frame body 1 at equal angles, surrounded by multiple main lifting points 17. Each secondary lifting point 18 is connected to the lifting ring 14 via a secondary chain 16. When all the main suspension chains 15 are taut, the secondary lifting points 18 are in a stress-free state.

[0027] When the battery pack needs to be hoisted, the hoist is connected to the lifting ring 14, the frame body 1 is lowered, and the lifting device is lowered to a suitable height. After the hook 11 is matched with the hanging point of the battery pack, the multiple hooks 11 fix the battery pack in place. The battery pack is then hoisted to the designated area and placed stably by the hoist and the gantry rail connected to the hoist. During hoisting, when the main suspension chain 15 connects the frame body 1 and the lifting ring 14, the secondary chain 16 is not under stress. If the main suspension chain 15 breaks accidentally, the secondary chain 16 will tighten instantly, which plays a protective role, improves the safety of hoisting, reduces the number of times the lifting device needs to be repaired, and thus improves the hoisting efficiency.

[0028] The frame body 1 includes a first frame 2 and a second frame 7 disposed under the first frame 2. The second frame 7 includes two second crossbeams 8. The lower end face of the second crossbeam 8 is provided with a second slide rail 9. At least two hooks 11 are slidably connected to the second slide rail 9. By setting the second slide rail 9, it is convenient to adjust the spacing between the hooks 11 on the same second crossbeam 8, which facilitates the hoisting of battery pack products of different specifications.

[0029] The first frame 2 can be formed by welding square steel pipes together or by using bolts for easy disassembly and maintenance. This solution can be adjusted by thickening and lengthening the square steel pipes according to the actual situation.

[0030] The hook 11 is slidably connected to the second slide rail 9 via the connecting point 10. A traction chain 12 is connected between the hook 11 and the connecting point 10 to facilitate the connection between the connecting point 10 and the hook 11. This facilitates compatibility with the lifting points and hooks 11 of different battery pack products, allowing the hook 11 to be adapted to the lifting points of different battery pack products.

[0031] like Figure 2 , Figure 3 and Figure 6As shown, the hook 11 includes a main board connected to the traction chain 12. A lower hanging plate is provided on one side of the main board, and an upper baffle connected to the main board is provided above the lower hanging plate. Both the lower hanging plate and the upper baffle are provided with first pin holes. The axes of the two first pin holes are aligned. A first pin rod is fitted into the first pin holes and passes through both first pin holes. A connecting rope 13 located on one side of the traction chain 12 is connected to the connecting point 10. The lower end of the connecting rope 13 is connected to the first pin rod. When it is necessary to engage the hook 11 with the lifting point on the battery pack product, the lifting device is lowered to a suitable height, the hook 11 is located next to the battery pack product, and then the first pin rod in the hook 11 is pulled out. After the hook 11 engages with the lifting point on the battery pack product, the first pin rod is inserted through the two first pin holes.

[0032] The second slide rail 9 is provided with a plurality of second pin holes at equal intervals. The connecting lifting point 10 is provided with a second pin rod that cooperates with the second pin holes. The second pin rod cooperates with the second pin holes to lock the connecting lifting point 10 onto the second slide rail 9, thereby completing the locking operation.

[0033] The main lifting points 17 are provided at both ends of the second crossbeam 8.

[0034] The first frame 2 includes a connecting frame 4 and two first crossbeams 3 respectively disposed on both sides of the connecting frame 4. The first crossbeams 3 are perpendicular to the second crossbeams 8. The first crossbeams 3 are provided with a first slide rail 5 perpendicular to the second slide rail 9. The first slide rail 5 is slidably connected to a slider 6 fixedly connected to the second crossbeam 8. By setting the first slide rail 5 and the second slide rail 9, the distance between the two second crossbeams 8 and the distance between the hooks 11 on the same second crossbeam 8 can be adjusted, which facilitates the hoisting of battery pack products of different specifications.

[0035] The first slide rail 5 is provided with a plurality of third pin holes at equal intervals, and the slider 6 is provided with a third pin rod that cooperates with the third pin holes. The third pin rod cooperates with the third pin hole to lock the slider 6 on the first slide rail 5, thus completing the locking operation.

[0036] Multiple auxiliary suspension points 18 are arranged at equal angles on the connecting frame 4.

[0037] The connecting frame 4 includes at least two parallel first connecting rods, and at least two parallel second connecting rods are vertically arranged on the first connecting rods. The two ends of the second connecting rods are respectively connected to the side walls of the two first crossbeams 3. The side walls of the second connecting rods are connected to the side walls of the first crossbeams 3 by diagonal connecting rods for fixing and reinforcement.

[0038] The first connecting rod, the second connecting rod, the diagonal connecting rod, and the first crossbeam 3 can all be made of square steel pipes. The connecting frame 4 can be formed by welding square steel pipes together or by using bolts for easy disassembly and maintenance. The square steel pipes can be thickened and lengthened according to the actual situation.

[0039] The two second crossbeams 8 are connected by multiple parallel multi-section telescopic limiting rods to prevent the second crossbeams 8 from shifting relative to the first crossbeam 3, which would affect the subsequent movement of the second crossbeams 8 and the center of gravity of the frame body 1.

[0040] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0041] The embodiments of this utility model are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery pack hoist sling comprising a frame body (1), characterized in that, The frame body (1) is connected with a plurality of hooks (11), and a chain condition is arranged on the frame body (1), wherein the chain condition comprises a lifting ring (14) arranged above the frame body (1), a main lifting point (17) is arranged at each of four corners of the upper end surface of the frame body (1), each of the main lifting points (17) is connected with the lifting ring (14) through a main suspension chain (15), a plurality of sub-lifting points (18) are arranged on the upper end surface of the frame body (1) at equal angles, the plurality of sub-lifting points (18) are surrounded by the plurality of main lifting points (17), each of the sub-lifting points (18) is connected with the lifting ring (14) through a sub-chain (16), and the sub-lifting points (18) are in a stress-free state when all the main suspension chains (15) are pulled tight.

2. The battery pack hoist hanger of claim 1, wherein, The frame body (1) comprises a first frame (2) and a second frame (7) arranged below the first frame (2), the second frame (7) comprises two second cross beams (8), a second sliding rail (9) is arranged on the lower end surface of the second cross beam (8), and at least two hooks (11) are slidably connected with the second sliding rail (9).

3. The battery pack hoist hanger of claim 2, wherein, The hook (11) is slidably connected with the second sliding rail (9) through a linking lifting point (10), and a traction chain (12) is connected between the hook (11) and the linking lifting point (10).

4. The battery pack hoist hanger of claim 3, wherein, The hook (11) comprises a main plate connected with the traction chain (12), a lower hanging plate is arranged on one side of the main plate, an upper baffle connected with the main plate is arranged above the lower hanging plate, first bolt holes are arranged on the lower hanging plate and the upper baffle, the axes of the two first bolt holes are arranged in coincidence, a first bolt rod is arranged in the first bolt holes in a matched mode, and the first bolt rod penetrates through the two first bolt holes.

5. The battery pack hoist hanger of claim 3, wherein, A plurality of second bolt holes are arranged on the second sliding rail (9) at equal intervals, and a second bolt rod arranged in a matched mode with the second bolt hole is arranged on the linking lifting point (10).

6. The battery pack hoist hanger of claim 2, wherein, The main lifting points (17) are arranged at both ends of the second cross beam (8).

7. The battery pack hoist hanger of claim 2, wherein, The first frame (2) comprises a connecting frame (4) and two first cross beams (3) arranged on both sides of the connecting frame (4) respectively, the first cross beam (3) is arranged perpendicularly to the second cross beam (8), a first sliding rail (5) arranged perpendicularly to the second sliding rail (9) is arranged on the first cross beam (3), and a sliding block (6) fixedly connected with the second cross beam (8) is slidably connected with the first sliding rail (5).

8. The battery pack hoist hanger of claim 7, wherein, A plurality of third bolt holes are arranged on the first sliding rail (5) at equal intervals, and a third bolt rod arranged in a matched mode with the third bolt hole is arranged on the sliding block (6).

9. The battery pack hoist hanger of claim 7, wherein, The plurality of sub-lifting points (18) are arranged at equal angles on the connecting frame (4).

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