A hoisting equipment

Abstract

This utility model discloses a hoisting device, including a support frame with a row of upper hoisting member pairs on the support frame; at least one of the adjacent upper hoisting member pairs is a movable upper hoisting member pair; wherein, the upper hoisting member in the movable upper hoisting member pair is movably connected to the support frame, and the spacing between adjacent upper hoisting member pairs is adjusted by moving the movable upper hoisting member pairs; a hoisting frame pair is suspended at the end of the adjacent upper hoisting member pair away from the support frame, one upper hoisting member pair suspends one hoisting frame, or the opposite upper hoisting member of an adjacent upper hoisting member pair suspends one hoisting frame; a row of lower hoisting members is provided on the hoisting frame, and the lower hoisting members are movably connected to the hoisting frame, and the spacing between adjacent lower hoisting members is adjusted by moving the lower hoisting members. This utility model can adjust the spacing between adjacent upper hoisting member pairs by moving the movable upper hoisting member pairs, and can adjust the spacing between lower hoisting members by moving the lower hoisting members, thereby adapting to the hoisting of different battery cell modules and reducing trial production costs and cycle.

Description

Technical Field

[0001] This utility model relates to a hoisting device and belongs to the field of battery manufacturing technology. Background Technology

[0002] The battery pack production process involves the cell module hoisting and off-line workstation. In the early R&D and trial production stage, it is necessary to make cell module prototypes on the trial production line. For the hoisting equipment required in the cell module hoisting process, the existing solution is that different cell modules have different sizes, so different hoisting equipment needs to be made for different cell modules, which increases the trial production cost and requires waiting for the processing cycle of the hoisting equipment, thus lengthening the trial production cycle. Utility Model Content

[0003] This utility model provides a hoisting device that solves the problems disclosed in the background art.

[0004] According to one aspect of this application, a lifting device is provided, comprising:

[0005] A support frame is provided with a row of upper lifting member pairs; among adjacent upper lifting member pairs, at least one upper lifting member pair is a movable upper lifting member pair; wherein, the upper lifting member in the movable upper lifting member pair is movably connected to the support frame, and the spacing between adjacent upper lifting member pairs is adjusted by moving the movable upper lifting member pair.

[0006] The lifting frame is suspended at the end of the adjacent upper lifting member pair away from the load-bearing frame. One upper lifting member pair suspends one lifting frame, or the opposite upper lifting members of an adjacent upper lifting member pair suspend one lifting frame.

[0007] The hoisting frame is equipped with a row of lower lifting components, which are movably connected to the hoisting frame. By moving the lower lifting components, the spacing between adjacent lower lifting components can be adjusted.

[0008] The aforementioned hoisting equipment can adjust the spacing between adjacent upper hoisting pairs by moving the upper hoisting pairs, and adjust the spacing between lower hoisting pairs by moving the lower hoisting pairs, thereby adapting to the hoisting of different battery cell modules and reducing trial production costs and cycles.

[0009] Furthermore, the lower lifting component includes a first sub-lifting component and a second sub-lifting component. The first end of the first sub-lifting component is movably connected to the lifting frame, and the second end of the first sub-lifting component is connected to the first end of the second sub-lifting component via a quick-release structure. The second end of the second sub-lifting component is connected to the lifting component. The first end is the end closer to the lifting frame, and the second end is the end farther from the lifting frame. The quick-release structure allows for rapid assembly and disassembly of the lifting components, enabling rapid lifting of the battery cell module.

[0010] Furthermore, a movable component is rotatably connected to the first end of the first sub-suspension component, and the movable component is movably mounted on the lifting frame. The quick-release structure includes an upper connecting component and a lower connecting component. The second end of the first sub-suspension component passes through the upper connecting component, and a first locking device is provided between the second end of the first sub-suspension component and the second surface of the upper connecting component. When the first sub-suspension component rotates to a preset angle, the first locking device locks the second end of the first sub-suspension component to the second surface of the upper connecting component; wherein, the second surface is the end face away from the lifting frame. The second end of the second sub-suspension component passes through the lower connecting component, and the first end of the second sub-suspension component is locked to the first surface of the lower connecting component by a second locking device; wherein, the first surface is the end face away from the lifting frame. The upper connecting component locking the first sub-suspension component and the lower connecting component locking the second sub-suspension component are fixed by stacking pull-out plugs. The quick-release structure is simple, allows for modular design, and ensures quick disassembly while locking the sub-suspension component and connecting component through the locking device, thus ensuring the stability of the lifting.

[0011] Furthermore, the first locking device includes a first locking block and a first groove adapted to the first locking block. The first locking block is disposed at the second end of the first sub-suspension member, and the first groove is formed on the second surface of the upper connector and communicates with the through hole passing through the first sub-suspension member. When the second end of the first sub-suspension member passes through the through hole and rotates at a preset angle, the first locking block is aligned with the first groove. The first locking device, implemented through the first locking block and the first groove, is not only simple in structure but also convenient to assemble and disassemble.

[0012] Furthermore, the second locking device includes a second locking block and a second groove adapted to the second locking block. The second locking block is disposed at the first end of the second sub-suspension member, and the second groove is formed on the first surface of the lower connector and communicates with the through hole of the second sub-suspension member. The first end of the second sub-suspension member passes through the through hole until the second locking block is embedded in the second groove. The second locking device, implemented by the second locking block and the second groove, is not only simple in structure but also convenient to assemble and disassemble.

[0013] Furthermore, the movable component is equipped with a knob that drives the first sub-suspension component to rotate; the movable component is also equipped with a pusher that moves the movable component. The knob facilitates rotating the first sub-suspension component during assembly and disassembly, while the pusher facilitates moving the movable component when adjusting the spacing.

[0014] Furthermore, the lifting component is a lifting block, or may include a lifting block and a first lifting rod. The lifting block has a slot adapted to the first lifting rod, into which the first lifting rod is inserted. This achieves two types of lifting component structures, adaptable to the lifting of battery cell modules with different requirements.

[0015] Furthermore, movement distance indicators are installed between the lower lifting component and the lifting frame, as well as between the upper lifting component and the support frame for alignment of the movable upper lifting component. These movement distance indicators allow for easy adjustment of the spacing.

[0016] The beneficial effects achieved by this utility model are as follows: the distance between adjacent upper hanging parts can be adjusted by moving the upper hanging parts, and the distance between the lower hanging parts can be adjusted by moving the lower hanging parts, thereby adapting to the hoisting of different battery cell modules and reducing trial production costs and cycle. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a hoisting device;

[0018] Figure 2 This is a schematic diagram of the support frame structure;

[0019] Figure 3 This is a structural schematic diagram of the hoisting frame;

[0020] Figure 4 This is a structural schematic diagram of the lower lifting component;

[0021] Figure 5 This is a structural schematic diagram of the first sub-lifting component;

[0022] Figure 6 This is a schematic diagram of the chute structure;

[0023] Figure 7 This is a schematic diagram of the structure at the top of the first sub-lifting component;

[0024] Figure 8 This is a schematic diagram of the knob's structure;

[0025] Figure 9 This is a structural schematic diagram of the upper connector;

[0026] Figure 10 This is a structural schematic diagram of the second sub-lifting component;

[0027] Figure 11 This is a structural schematic diagram of the lower connector;

[0028] Figure 12 This is a schematic diagram of the structure of the first lifting rod;

[0029] Figure 13 This is a structural diagram of the first installation method for hoisting equipment.

[0030] Figure 14 This is a structural diagram of the second installation method for hoisting equipment;

[0031] Figure 15 This is a structural diagram of the third installation method for hoisting equipment. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0033] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application.

[0034] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.

[0035] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0036] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0037] It should be noted that similar symbols and letters in the following figures represent similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0038] Furthermore, in the description of the embodiments of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features.

[0039] See Figure 1 , Figure 1 This is a structural schematic diagram of a hoisting device provided in an embodiment of this application. The device may include at least:

[0040] A support frame 1 is provided, on which a row of upper lifting members 2 pairs are installed. At least one of the adjacent upper lifting member pairs 2 pairs is a movable upper lifting member pair 2 pair. The upper lifting member 2 in the movable upper lifting member pair 2 pair is movably connected to the support frame 1, and the spacing between adjacent upper lifting member pairs 2 pairs is adjusted by moving the movable upper lifting member pair 2 pairs. A pair of lifting frames 3 are provided, suspended at the ends of adjacent upper lifting member pairs 2 pairs away from the support frame 1 (i.e., the bottom end in the figure). One upper lifting member pair 2 suspends one lifting frame 3, or the opposite upper lifting member 2 of adjacent upper lifting member pairs suspends one lifting frame 3. A row of lower lifting members 4 is provided on the lifting frame 3, and the lower lifting members 4 are movably connected to the lifting frame 3. The spacing between adjacent lower lifting members 4 is adjusted by moving the lower lifting members 4.

[0041] It should be noted that the support frame 1 can be a bracket composed of a combination of profiles. Since this application needs to adapt to different battery cell modules 5, the support frame 1 should be as sturdy as possible.

[0042] The structure of support frame 1 can be found in [reference]. Figure 2 The system includes a main frame 9 and two movable frames 10. The main frame 9 is a rectangular frame consisting of three parallel long profiles. Adjacent long profiles are fixed together by short profiles, specifically at both ends and in the middle. To facilitate the lifting of the support frame 1, universal rotating lifting rings 11 are fixed at the four corners of the main frame 9. The two movable frames 10 have identical structures, both being rectangular frames formed by four support plates connected end to end. The movable frames 10 are fitted onto the main frame 9 and connected to it via slide rails. The movable frames 10 can slide along the length of the main frame 9. To facilitate the movement of the movable frames 10, handles 12 are installed on the side of the movable frames 10. Workers can move the movable frames 10 by pushing the handles 12. To ensure the stability of the movable frames 10, several short support plates are also connected between the two long support plates of the movable frames 10.

[0043] It should be noted that the lifting component 2 pair includes two lifting components 2. Figure 2 In the main frame 9, two opposite upper lifting parts 2 are called a pair of upper lifting parts 2. The upper lifting parts 2 can be cylindrical second lifting rods or lifting straps. If the upper lifting parts 2 are connected to the movable frame 10, then the upper lifting parts 2 are defined as movable upper lifting parts 2. If the upper lifting parts 2 are directly connected to the main frame 9, then the upper lifting parts 2 are defined as fixed lifting straps.

[0044] by Figure 2 For example, in the figure, the upper lifting component 2 uses a lifting sling, and the bottom end of the lifting sling is connected to a safety hook 8. The lifting slings at both ends are movable lifting slings, and the one in the middle is a fixed lifting sling. The spacing of the lifting slings can be adjusted by moving the lifting slings at both ends.

[0045] It should be noted that in some embodiments, a moving distance indicator is installed between the moving upper lifting member 2 and the support frame 1. The moving distance indicator can indicate the moving distance, which facilitates the adjustment of the spacing.

[0046] Or with Figure 2 For example, the moving distance indicator mainly includes a scale plate 6 and an indicator plate 7. The scale plate 6 is installed on the outer side of the long side of the main frame 9, and the indicator plate 7 is installed on the support plate of the moving frame 10 facing the long side of the main frame 9. The pointer in the indicator plate 7 points to the scale on the scale plate 6. When the moving frame 10 moves, it drives the pointer to move. The moving distance is determined by the scale that the pointer points to before and after the movement.

[0047] It should be noted that, since the battery cell module 5 needs to be hoisted from both ends or sides, two hoisting frames 3 are also provided, which are defined as a pair of hoisting frames 3. The hoisting frame 3 is also a frame, see [link to relevant documentation]. Figure 3 It mainly includes a second mounting plate 14 and an m-shaped first mounting plate 13. In order to facilitate the hoisting of the upper part 2, multiple lifting eye bolts 27 are fixed at the top of the first mounting plate 13. The second mounting plate 14 is fixed at the bottom of the first mounting plate 13 to support the lower part 4.

[0048] Figure 3 In the middle, the lower lifting component 4 is movably connected to the second mounting plate 14 via the movable component 15. The movable component 15 is movably mounted on the second mounting plate. (See also...) Figure 4 The movable part 15 has a cross-shaped structure, see [reference]. Figure 6 The second mounting plate 14 also has a cross groove 16 adapted to the moving part 15. This cross structure of the moving part 15 and the groove 16 can make the movement more stable.

[0049] In some embodiments, the lower lifting member 4 consists of two sections, mainly including a first sub-lifting member 20 and a second sub-lifting member 22. The first end of the first sub-lifting member 20 (i.e., the top end in the figure) is movably connected to the lifting frame 3 (i.e., the second mounting plate 14). The second end of the first sub-lifting member 20 (i.e., the bottom end in the figure) and the first end of the second sub-lifting member 22 (i.e., the top end in the figure) are connected by a quick-release structure. The second end of the second sub-lifting member 22 (i.e., the bottom end in the figure) is connected to the lifting member. The first end is the end closer to the lifting frame 3, and the second end is the end farther away from the lifting frame 3. The quick-release structure allows for rapid assembly and disassembly of the lifting member, enabling rapid lifting of the battery cell module 5.

[0050] The first end of the first sub-lifting component 20 is movably connected to the lifting frame 3 via the movable component 15, and the first end of the first sub-lifting component 20 is rotatably connected to the movable component 15. The quick-release structure includes an upper connector 23 and a lower connector 21. The second end of the first sub-suspension member 20 passes through the upper connector 23. A first locking device is provided between the second end of the first sub-suspension member 20 and the second surface (i.e., the bottom surface in the figure) of the upper connector 23. When the first sub-suspension member 20 rotates to a preset angle, the first locking device locks the second end of the first sub-suspension member 20 to the second surface of the upper connector 23. The second end of the second sub-suspension member 22 passes through the lower connector 21. The first end of the second sub-suspension member 22 is locked to the first surface (i.e., the top surface in the figure) of the lower connector 21 by the second locking device. The upper connector 23 that locks the first sub-suspension member 20 and the lower connector 21 that locks the second sub-suspension member 22 are fixed by stacking pull-out plugs, such as using pins 30 to stack the upper connector 23 and the lower connector 21. The second surface is the end surface away from the lifting frame 3, and the first surface is the end surface away from the lifting frame 3. The quick-release structure is simple and allows for modular design. While ensuring quick disassembly, the locking device secures the sub-lifting parts to the connecting parts, thus ensuring the stability of the lifting operation.

[0051] It should be noted that, see Figure 5 and Figure 10 The first sub-lifting component 20 and the second sub-lifting component 22 are both lifting rods, which can be specifically defined as the third lifting rod and the fourth lifting rod, respectively. See [link / reference]. Figure 5 The first sub-lifting component 20 consists of a thin section and a thick section, separated by a shoulder 32. The thin section is rotatably connected to the vertical part of the moving component 15. (See attached image) Figure 7 A cross groove 31 is formed at the top of the vertical part of the movable part 15. The top of the thin section extends from the center of the cross groove 31 and connects to the third locking block 29. The third locking block 29 is located inside the cross groove 31. In order to facilitate the rotation of the first sub-hanging part 20, a knob part 17 (i.e., Figure 8 The knob shown is connected to the third locking block 29 by bolts. The protruding structure of the third locking block 29 engages with the groove of the knob 17, so that when the knob 17 rotates, it also drives the first sub-hanging part 20 to rotate. That is, the knob 17 facilitates the rotation of the first sub-hanging part 20 during disassembly and assembly. In order to prevent the knob 17 from rotating under a small external force, a limiting resistance is required for the knob 17. Therefore, a spring 28 is sleeved in the thin section. The spring 28 is specifically installed between the third locking block 29 and the shoulder 32. The movement of the spring 28 is restricted by the third locking block 29 and the shoulder 32.

[0052] It should be noted that, similar to the movable frame 10, in order to facilitate pushing the movable part 15, a pusher is installed on the movable part 15. The movable part 15 is moved by the pusher to facilitate adjusting the spacing. Specifically, a pusher block 18 is fixed on the horizontal part of the movable part 15, and a handle 19 is fixed on the pusher block 18. The lower hanging part 4 is moved by pushing the handle 19.

[0053] Similar to the connection between the upper lifting member 2 and the support frame 1, a movement distance indicator is also provided between the lower lifting member 4 and the lifting frame 3. Specifically, a scale plate 6 is installed on the second mounting plate 14, and an indicator plate 7 is installed on the push block, which can clearly indicate the movement distance.

[0054] In some embodiments, the first locking device may include a first locking block 33 and a first groove 34 adapted to the first locking block 33. The first locking block 33 is fixed to the second end (i.e., the bottom end in the figure) of the first sub-hanging member 20. The first groove 34 is formed on the second surface (i.e., the bottom surface in the figure) of the upper connecting member 23 and communicates with the through hole of the first sub-hanging member 20. When the second end of the first sub-hanging member 20 passes through the through hole and is rotated by a preset angle, generally 90°, the first locking block 33 is directly opposite the first groove 34. The first locking device can be realized by the first locking block 33 and the first groove 34, which is not only simple in structure but also convenient to assemble and disassemble.

[0055] See Figure 5 and Figure 9 The upper connector 23 is a connecting block. The first groove 34 is a groove formed on the bottom surface of the upper connector 23. The first locking block 33 is a rectangular block. The upper connector 23 has rectangular holes that are arranged in a cross shape with the first groove 34. The first locking block 33 can pass through the upper connector 23 through the rectangular holes. When the first sub-hanger 20 rotates 90°, the first locking block 33 is directly opposite the first groove 34, so that the first locking block 33 can be embedded into the first groove 34, thereby achieving locking.

[0056] In some embodiments, the second locking device includes a second locking block 35 and a second groove 36 adapted to the second locking block 35. The second locking block 35 is disposed at the first end (i.e., the top end in the figure) of the second sub-hanging member 22, and the second groove 36 is formed on the first surface of the lower connecting member 21 and communicates with the through hole of the second sub-hanging member 22. The first end of the second sub-hanging member 22 passes through the through hole until the second locking block 35 is embedded in the second groove 36. The second locking device is realized by the second locking block 35 and the second groove 36, which not only has a simple structure but is also easy to assemble and disassemble.

[0057] See Figure 10 and Figure 11The lower connector 21 is also a connector block. The second groove 36 is a groove on the fixed surface of the lower connector 21. The second locking block 35 is a rectangular block with a through hole in the groove. The second sub-hanger 22 passes through the through hole until the second locking block 35 is embedded in the second groove 36, thereby achieving locking.

[0058] In some embodiments, the lifting component is a lifting block 25, or includes a lifting block 25 and a first lifting rod 26. The lifting block 25 has a slot adapted to the first lifting rod 26, and the first lifting rod 26 is inserted into the slot. The lifting block 25 is applied to the battery cell module 5 with the lifting hole on the side, and the first lifting rod 26 is applied to the battery cell module 5 with the lifting hole on the top (the lifting hole on the top is basically a waist hole). Two types of lifting component structures can be realized, which can be adapted to the lifting of battery cell modules 5 with different requirements.

[0059] It should be noted that, see Figure 12 The first lifting rod 26 is a tapered rod, and the second end of the tapered rod is fixed with a fourth locking block 24 and a fifth locking block 37, respectively.

[0060] There are three types of installation methods for the above-mentioned hoisting equipment, depending on the different battery cell modules 5, as detailed below:

[0061] See Figure 13 The support frame 1 is equipped with three pairs of upper lifting parts. The middle pair of upper lifting parts is fixed, and the rest are movable. Each pair of upper lifting parts has a lifting frame 3 hanging at its bottom, so there are three lifting frames 3. The middle lifting frame 3 and the left lifting frame 3 form a pair of lifting frames 3, and the middle lifting frame 3 and the right lifting frame 3 form a pair of lifting frames 3. Each lifting frame 3 is movably connected to two lower lifting parts 4.

[0062] Figure 13 The structure is adapted to heavier battery cell modules 5. The lifting holes of this battery cell module 5 can be on the sides or the top. This battery cell module 5 will also have an additional set of lifting holes in the middle. The lower lifting component 4 can be the side lifting hole for lifting by the lifting fastener 25 or the top lifting hole for lifting by the first lifting rod 26.

[0063] See Figure 14 Two pairs of upper lifting parts are set on the support frame 1. Both pairs of upper lifting parts are movable. A lifting frame 3 is suspended at the bottom of each pair of upper lifting parts, that is, there are two lifting frames 3. The two lifting frames 3 constitute a pair of lifting frames 3. Each lifting frame 3 is movable and connected to two lower lifting parts 4.

[0064] Figure 14 The structure is adapted to have lifting holes on the sides of the battery cell module 5, which are lifted by lifting blocks 25. Alternatively, the lifting holes can be on the top of the head of the battery cell module 5, which are lifted by the first lifting rod 26.

[0065] Figure 14Equipment hoisting methods for the structure, such as Figure 1 As shown, it can realize the hoisting of battery cell modules 5 with different widths and lengths (i.e., hoisting of battery cell modules 5 of different sizes). Specifically, the spacing between adjacent upper hoisting parts 2 pairs can be adjusted by moving the upper hoisting parts 2 pairs, and the spacing between lower hoisting parts 4 can be adjusted by moving the lower hoisting parts 4, thereby adapting to the hoisting of battery cell modules 5 of different sizes.

[0066] See Figure 15 Two pairs of upper lifting parts are set on the support frame 1. Both pairs of upper lifting parts 2 can be moved. One lifting frame 3 is suspended relative to the upper lifting part 2 in the two pairs of upper lifting parts 2. The two lifting frames 3 form a pair of lifting frames 3. Each lifting frame 3 is movably connected to two lower lifting parts 4.

[0067] Figure 15 The structural adapter is located at the head of the battery cell module 5. If it is on the side of the head, use the lifting block 25 for lifting; if it is on the top of the head, use the first lifting rod 26 for lifting.

[0068] Figure 14 The structured equipment can hoist multiple battery cell modules 5 of the same width but different lengths. Specifically, the spacing of the lower hoisting parts 4 can be adjusted by moving the lower hoisting parts 4, thereby adapting to the hoisting of battery cell modules 5 of different lengths.

[0069] The above-mentioned hoisting equipment can adjust the spacing between adjacent upper hoisting parts by moving the upper hoisting parts 2 pairs, and adjust the spacing between the lower hoisting parts 4 by moving the lower hoisting parts 4, thereby adapting to the hoisting of different battery cell modules 5, reducing trial production costs and cycle.

[0070] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A hoisting device, characterized in that, include: The support frame has a row of lifting components installed on it; In adjacent pairs of upper lifting components, at least one pair of upper lifting components is a movable pair of upper lifting components; wherein, the upper lifting component in the movable pair of upper lifting components is movably connected to the support frame, and the spacing between adjacent pairs of upper lifting components is adjusted by moving the movable pair of upper lifting components. The lifting frame is suspended at the end of the adjacent upper lifting member pair away from the load-bearing frame. One upper lifting member pair suspends one lifting frame, or the opposite upper lifting members of an adjacent upper lifting member pair suspend one lifting frame. The hoisting frame is equipped with a row of lower lifting components, which are movably connected to the hoisting frame. By moving the lower lifting components, the spacing between adjacent lower lifting components can be adjusted.

2. The device according to claim 1, characterized in that, The lower lifting component includes a first sub-lifting component and a second sub-lifting component. The first end of the first sub-lifting component is movably connected to the lifting frame. The second end of the first sub-lifting component and the first end of the second sub-lifting component are connected by a quick-release structure. The second end of the second sub-lifting component is connected to the lifting component. The first end is the end closer to the lifting frame, and the second end is the end farther away from the lifting frame.

3. The device according to claim 2, characterized in that, The first end of the first sub-lifting component is rotatably connected to a movable component, which is movably mounted on the lifting frame. The quick-release structure includes an upper connector and a lower connector; The second end of the first sub-lifting component passes through the upper connecting component. A first locking device is provided between the second end of the first sub-lifting component and the second surface of the upper connecting component. When the first sub-lifting component rotates to a preset angle, the first locking device locks the second end of the first sub-lifting component to the second surface of the upper connecting component. The second surface is the end face away from the lifting frame. The second end of the second sub-lifting component passes through the lower connecting component, and the first end of the second sub-lifting component is locked to the first surface of the lower connecting component by a second locking device; wherein, the first surface is the end surface away from the lifting frame; The upper connector of the first sub-suspension and the lower connector of the second sub-suspension are secured by stacking and fixing with pull-out plugs.

4. The device according to claim 3, characterized in that, The first locking device includes a first locking block and a first groove adapted to the first locking block. The first locking block is located at the second end of the first sub-suspension member. The first groove is opened on the second surface of the upper connector and communicates with the through hole through the first sub-suspension member. When the second end of the first sub-suspension member passes through the through hole and rotates at a preset angle, the first locking block is directly facing the first groove.

5. The device according to claim 3, characterized in that, The second locking device includes a second locking block and a second groove adapted to the second locking block. The second locking block is disposed at the first end of the second sub-suspension member. The second groove is opened on the first surface of the lower connector and communicates with the through hole through the second sub-suspension member. The first end of the second sub-suspension member passes through the through hole until the second locking block is embedded in the second groove.

6. The device according to claim 3, characterized in that, The movable component is equipped with a knob that drives the first sub-hanging component to rotate; the movable component is also equipped with a pusher that moves the movable component.

7. The device according to claim 2, characterized in that, The lifting component is a lifting block, or may include a lifting block and a first lifting rod. The lifting block has a slot adapted to the first lifting rod, and the first lifting rod is inserted into the slot.

8. The device according to any one of claims 1 to 7, characterized in that, The lower lifting component and the lifting frame are equipped with a movement distance indicator, as are the upper lifting component and the support frame for aligning the movable upper lifting component.

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