Power storage battery pack hoisting tool for passenger car

Abstract

The utility model aims to provide the power storage battery pack hoisting tool for the passenger car, which is strong in compatibility, high in safety coefficient and capable of simplifying the installation procedure, reducing the human input, improving the installation efficiency and improving the mechanization degree. The lifting device comprises a mounting frame and a battery pack, the action end of an external forklift is connected with the mounting frame, a lifting hole is formed in the battery pack, a plurality of hook pieces are arranged at the left end and the right end of the mounting frame, each hook piece comprises a connecting piece, a rotating shaft and a lifting hook, the connecting pieces are connected with the lower end of the mounting frame, and first lifting lugs are arranged at the left end and the right end of the bottom of each connecting piece; the lifting hook is matched between the two groups of first lifting lugs, second lifting lugs are arranged at the left end and the right end of the top of the lifting hook, the rotating shaft penetrates through the first lifting lugs and the second lifting lugs, a torsion spring is arranged between the two groups of first lifting lugs and sleeves the rotating shaft, and the lifting hook is matched with the lifting hole. The battery module hoisting device is applied to the technical field of battery module hoisting.

Description

Technical Field

[0001] The utility model is applied to the technical field of battery module hoisting, and particularly relates to a power battery pack hoisting tool for buses. Background Art

[0002] Currently, the energy storage assembly for domestic pure electric buses is mostly based on battery packs. Multiple battery packs are connected in series or parallel via wiring harnesses, and then assembled with a high-voltage distribution box, a battery management system control box, and related wiring harness accessories. For example, a power battery pack from a domestic battery manufacturer weighs 217 kg and measures 1060 mm long, 630 mm wide, and 240 mm high. Installing such a battery pack on the vehicle requires tools such as a forklift, crowbar, and pneumatic tools. The installation typically requires the coordinated efforts of multiple skilled workers.

[0003] For example, a 12-meter bus model has six power battery packs mounted horizontally at the rear. The typical process for installing the power battery packs on the vehicle frame is as follows: First, a forklift is parked next to the power battery pack pallet and the battery pack is hoisted onto the forklift's forks using an overhead crane. Due to space constraints or work efficiency limitations, the battery packs are often transferred directly to the forks manually. Next, the forklift is used to transport the battery packs to the vehicle's hatch where they will be installed. The battery packs are lifted to the same height or higher than the battery pack mounting brackets, and then manually pushed into the battery mounting brackets. Because battery packs typically weigh over 200 kg, installers also need to use tools such as crowbars to pry the battery packs and adjust their position so that the mounting holes on the battery pack align with the battery pack connection holes on the vehicle frame. Finally, the installer tightens the fastening bolts with a wrench and secures the battery pack to the vehicle frame. In addition, people have increasingly higher requirements for the battery life of pure electric buses, and there are more and more power battery packs. The current installation of power battery packs is relatively complicated and requires a lot of manual intervention, resulting in high labor costs and low installation efficiency for power battery pack installation, which ultimately leads to high production costs for the entire vehicle and poses safety hazards.

[0004] For example, the Chinese patent with announcement number CN217996490U discloses a lifting tool for a battery pack with a bracket. The tool calculates the center of gravity of the battery pack and the length of the upper and lower lifting chains to vertically lift the battery pack to ensure that there is no deviation during the lifting process. However, it has high requirements for the installation environment and is only suitable for vertical upper and lower suspension. It is not suitable for the installation environment of a push-type structure and cannot be used to install the battery pack on the battery pack mounting frame. It has certain limitations. Therefore, it is necessary to provide a lifting tool for power battery packs for buses with strong compatibility, high safety factor, and the ability to simplify the installation process, reduce manpower input, improve installation efficiency, and increase the degree of mechanization. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the existing technology and provide a power battery pack lifting tool for buses which has strong compatibility, high safety factor, can simplify the installation process, reduce manpower input, improve installation efficiency, and increase the degree of mechanization.

[0006] The technical solution adopted by the present invention is: the present invention includes a mounting frame and a battery pack, the action end of the external forklift is connected to the mounting frame, the battery pack is provided with a lifting hole, and a plurality of hooks are provided at both ends of the left and right ends of the mounting frame, the hooks include a connecting member, a rotating shaft, and a lifting hook, the connecting member is connected to the lower end of the mounting frame, the left and right ends of the bottom of the connecting member are provided with a first lifting ear, the lifting hook is adapted between two groups of the first lifting ears, the left and right ends of the top of the lifting hook are provided with a second lifting ear, the rotating shaft is inserted into the first lifting ear and the second lifting ear, a torsion spring is provided between the two groups of the first lifting ears, the torsion spring is sleeved on the rotating shaft, and the lifting hook cooperates with the lifting hole.

[0007] It can be seen from the above scheme that an external forklift drives the mounting frame to move up and down and left and right, the lifting hook is positioned and matched with the lifting hole, and under the action of the torque spring, the lifting hook is kept in a vertical state. Driven by the external forklift, the lifting hook hooks up the battery pack or unhooks the battery pack, thereby realizing the loading and unloading of the battery pack.

[0008] In the prior art, although the loading and unloading of battery packs is also carried out by forklifts, the positioning method is mostly lifting. The action end of the forklift directly lifts the bottom of the battery pack. When the battery pack is transported to the entrance of the mounting rack, it is necessary to manually push the battery pack into the designated position of the mounting rack, and then fine-tune the position of the battery pack so that the mounting hole of the mounting rack is precisely aligned with the connection hole of the battery pack. Finally, the fastening bolts are locked with a wrench to achieve the installation of the battery pack. Since the battery pack generally weighs more than 200kg, the installer needs to use tools such as crowbars to pry the battery pack, which not only increases the labor intensity, but also poses the risk of the battery pack falling. Obviously, this installation method has the disadvantages of cumbersome operation and high risk factor. However, the positioning method of the present application is hoisting. The forklift drives the battery pack cart directly to the designated position of the mounting rack, eliminating the manual pushing and pulling process, simplifying the installation procedure, reducing manpower input, and improving installation efficiency and safety factor.

[0009] A preferred solution is that a limit block is provided on the arc edge of the second lifting ear. In a stationary state, the limit block cooperates with the connecting piece, and the lifting hook is kept in a vertical state by the torsion spring.

[0010] A preferred solution is that the diameters of the two ends of the rotating shaft are larger than the diameter of the middle portion of the rotating shaft, and the middle portion of the rotating shaft serves as a mounting sink for the torque spring.

[0011] A preferred solution is that an inclined protrusion is provided at the lower end of the hook, and the lifting hook cooperates with the lifting hole through the inclined protrusion. The lower side of the inclined protrusion is an inclined surface structure, and the hook smoothly detaches from the lifting hole through the inclined surface structure.

[0012] A preferred solution is that the longitudinal section of the hook is an inverted trapezoidal structure.

[0013] A preferred solution is that the number of the hook members is four, and the four groups of hook members are symmetrically arranged at the bottom of the left and right ends of the mounting frame.

[0014] A preferred solution is that the mounting frame includes an upper L-shaped plate, a lower L-shaped plate, a tail plate and two groups of symmetrically arranged forks, the rear sides of the two groups of forks are connected to the action ends of an external forklift, and the front sides of the two groups of forks are provided with lifting beams, the two ends of the upper L-shaped plate are respectively connected to the upper parts of the two groups of forks, the two ends of the lower L-shaped plate are respectively connected to the lower parts of the two groups of forks, the two ends of the tail plate are respectively connected to the ends of the two groups of lifting beams, and the hook is provided at the bottom of the lifting beam.

[0015] A preferred solution is that the mounting frame further includes a reinforcing plate, and the four corners of the reinforcing plate are respectively connected to the upper L-shaped plate and the lower L-shaped plate.

[0016] A preferred solution is that both the lifting beam and the reinforcement plate are provided with weight-reducing holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the utility model from another angle;

[0019] Figure 3 is a schematic diagram of the three-dimensional structure of the mounting frame;

[0020] Figure 4 is a schematic diagram of the three-dimensional structure of the battery pack;

[0021] Figure 5 1 is a schematic diagram of the three-dimensional structure of the lifting hook;

[0022] Figure 6 1. It is a schematic diagram of the exploded three-dimensional structure of the lifting hook;

[0023] Figure 7 In the prior art, the battery pack feeding method is a three-dimensional structural diagram of a lifting type;

[0024] Figure 8It is a three-dimensional structural schematic diagram of the installation process of the battery pack in the prior art;

[0025] Figure 9 This is a schematic diagram of the three-dimensional structure of the battery pack installation process in this application;

[0026] Figure 10 is a schematic diagram of the three-dimensional structure of the battery pack hooking process;

[0027] Figure 11 is a schematic diagram of the three-dimensional structure of the battery pack decoupling process;

[0028] Figure 12 It is a schematic diagram of the three-dimensional structure when the mounting frame is removed. DETAILED DESCRIPTION

[0029] like Figures 1 to 8 As shown, in this embodiment, the utility model includes a mounting frame 1 and a battery pack 2, the action end of the external forklift is connected to the mounting frame 1, the battery pack 2 is provided with a lifting hole 3, and a plurality of hooks 4 are provided on both ends of the left and right ends of the mounting frame 1, the hook 4 includes a connecting member 5, a rotating shaft 6, and a lifting hook 7, the connecting member 5 is connected to the lower end of the mounting frame 1, and a first lifting ear 8 is provided on both ends of the left and right ends of the bottom of the connecting member 5, the lifting hook 7 is adapted between the two groups of the first lifting ears 8, and a second lifting ear 9 is provided on both ends of the top of the lifting hook 7, the rotating shaft 6 is inserted into the first lifting ear 8 and the second lifting ear 9, and a torsion spring 10 is provided between the two groups of the first lifting ears 8, the torsion spring 10 is sleeved on the rotating shaft 6, and the lifting hook 7 cooperates with the lifting hole 3.

[0030] The mounting frame 1 serves as the primary load-bearing component of the lifting fixture. The torsion spring 10 is mounted on the mounting platform of the rotating shaft 6. Torsion-loaded rods are designed at both ends of the rotating shaft 6. The torsion-loaded rods serve as the connecting hub between the lifting hook 7 and the connecting member 5. In a stationary state, the torque of the torsion spring 10 maintains the lifting hook 7 in a vertical position. The first lifting eye 8 and the second lifting eye 9 are both used to mount the rotating shaft 6.

[0031] like Figures 1 to 6 As shown, in this embodiment, a limit block 11 is provided on the arc edge of the second lifting ear 9. When in a stationary state, the limit block 11 cooperates with the connecting member 5, and the lifting hook 7 is maintained in a vertical state by the torsion spring 10. When the lifting hook 7 is subjected only to the torque force of the torsion spring 10, the lifting hook 7 remains in a vertical state, thereby limiting the rotation angle of the lifting hook 7.

[0032] like Figures 1 to 6As shown, in this embodiment, the diameter of the rotating shaft 6 at both ends is larger than the diameter of the middle portion of the rotating shaft 6, and the middle portion of the rotating shaft 6 serves as a mounting sink for the torque spring 10. The rotating shaft 6 has a larger diameter at both ends and a smaller diameter in the middle. After the torque spring 10 is mounted on the rotating shaft 6, the mounting sink prevents the rotating shaft 6 from slipping during operation.

[0033] like Figures 1 to 6 As shown, in this embodiment, the lower end of the hook member 4 is provided with an inclined protrusion 12, and the lifting hook 7 cooperates with the lifting hole 3 via the inclined protrusion 12. The lower side of the inclined protrusion 12 is an inclined surface structure, and the hook member 4 smoothly detaches from the lifting hole 3 via the inclined surface structure. The inclined protrusion 12 is the hook tip of the lifting hook 7.

[0034] like Figures 1 to 6 As shown, in this embodiment, the longitudinal section of the hook member 4 is an inverted trapezoidal structure, which is beneficial to improving the rigidity of the hook member 4.

[0035] like Figures 1 to 6 As shown, in this embodiment, the number of the hook members 4 is four, and the four groups of hook members 4 are symmetrically arranged at the bottom of the left and right ends of the mounting frame 1.

[0036] like Figures 1 to 6 As shown, in this embodiment, the mounting frame 1 includes an upper L-shaped plate 13, a lower L-shaped plate 14, a tail plate 15 and two groups of symmetrically arranged forks 16. The rear sides of the two groups of forks 16 are connected to the action ends of the external forklift, and the front sides of the two groups of forks 16 are provided with a lifting beam 17. The two ends of the upper L-shaped plate 13 are respectively connected to the upper parts of the two groups of forks 16, the two ends of the lower L-shaped plate 14 are respectively connected to the lower parts of the two groups of forks 16, the two ends of the tail plate 15 are respectively connected to the ends of the two groups of lifting beams 17, and the hook 4 is provided at the bottom of the lifting beam 17.

[0037] The tailgate 15 is attached to the rear of the lifting beam 17 via fasteners, spacing and connecting the left and right ends of the lifting beams 17. The mounting frame 1 serves as the primary load-bearing component of the lifting fixture. The rear sides of the two sets of forks 16 are mounted on the forklift's fork rails and can be moved left and right. The lifting beam 17 is a sheet metal component. After being welded to the forks 16, they are then welded to the forklift's connecting plate, which helps improve the rigidity of the mounting frame 1.

[0038] like Figures 1 to 6As shown, in this embodiment, the mounting frame 1 further includes a reinforcing plate 18, the four corners of which are connected to the upper L-shaped plate 13 and the lower L-shaped plate 14, respectively, to improve the longitudinal strength of the mounting frame 1 and prevent the forks 16 on the left and right sides from excessive relative displacement.

[0039] like Figures 1 to 6 As shown, in this embodiment, the lifting beam 17 and the reinforcing plate 18 are both provided with weight-reducing holes 19, so as to achieve a lightweight design while ensuring the overall structural strength.

[0040] like Figures 9 to 12 As shown, in this embodiment, the hooking process of the battery pack 2 is:

[0041] An external forklift drives the mounting bracket 1 to move directly above the battery pack 2. The forklift is then slowly lowered. As the mounting bracket 1 moves downward, the lower edge of the lifting hook 7 first touches the upper edge of the lifting hole 3. The bracket is then re-confirmed and adjusted so that the four lifting hooks 7 are substantially aligned with the lifting holes 3. The mounting bracket 1 is then controlled to move downward. The lifting hooks 7 are subjected to the blocking force of the edge of the battery pack 2. The torsion spring 10 rotates the lifting hooks 7 outward. During this process, the left and right lifting hooks 7 flip outward until the hook tips of the lifting hooks 7 touch the outer edges of the battery pack 2, further controlling the mounting bracket 1 to move downward. Finally, under the action of the torsion spring 10, when the lifting hooks 7 move downward to the position of the lifting hole 3, they flip back to their original vertical position. Simultaneously, the stopper 11 contacts the connector 5 and emits a metallic knocking sound, indicating that the battery pack 2 has been successfully hooked.

[0042] The decoupling process of the battery pack 2:

[0043] Starting from the hooked state of the battery pack 2, operate the forklift to slowly lower the mounting frame 1. During this process, the lifting hooks 7 on the left and right sides will flip outward until the hook tips of the lifting hooks 7 touch the outer edges of the battery pack 2, which means that the battery pack 2 is successfully unhooked.

[0044] The process of removing the mounting frame 1:

[0045] Starting from the unhooked state of the battery pack 2, operate the forklift to slowly move horizontally a short distance away from the battery pack 2. During the reverse movement, the hook tip of the lifting hook 7 will press against the outer edge of the battery pack 2, thereby preventing the hook tip of the lifting hook 7 from excessively wearing the outer edge of the battery pack 2. Operate the forklift to slowly lift the mounting frame 1 until the lifting hook 7 is completely detached from the battery pack 2, and then operate the forklift to slowly move horizontally until it is completely away from the battery pack 2.

Claims

1. A power battery pack hoisting tool for a bus, comprising a mounting frame (1) and a battery pack (2), wherein an action end of an external forklift is connected to the mounting frame (1), and the battery pack (2) is provided with a hoisting hole (3), characterized in that: A plurality of hooks (4) are provided at both left and right ends of the mounting frame (1), and the hooks (4) include a connecting member (5), a rotating shaft (6), and a lifting hook (7). The connecting member (5) is connected to the lower end of the mounting frame (1), and first lifting ears (8) are provided at both left and right ends of the bottom of the connecting member (5). The lifting hook (7) is adapted between two groups of the first lifting ears (8). Second lifting ears (9) are provided at both left and right ends of the top of the lifting hook (7). The rotating shaft (6) is inserted through the first lifting ear (8) and the second lifting ear (9). A torsion spring (10) is provided between the two groups of the first lifting ears (8). The torsion spring (10) is sleeved on the rotating shaft (6). Under the drive of an external forklift, the lifting hook (7) is positioned and matched with the lifting hole (3).

2. The lifting tool for the power battery pack for a bus according to claim 1 is characterized in that: A limiting block (11) is provided on the arc edge of the second lifting lug (9). In a stationary state, the limiting block (11) is in limited cooperation with the connecting member (5), and the lifting hook (7) is kept in a vertical state by the torsion spring (10).

3. The lifting tool for the power battery pack for a bus according to claim 1 is characterized in that: The diameters of the two ends of the rotating shaft (6) are larger than the diameter of the middle portion of the rotating shaft (6), and the middle portion of the rotating shaft (6) serves as a mounting sink for the torsion spring (10).

4. The lifting tool for the power battery pack for a bus according to claim 1 is characterized in that: The lower end of the hook (4) is provided with an inclined protrusion (12), and the hoisting hook (7) cooperates with the hoisting hole (3) through the inclined protrusion (12). The lower side of the inclined protrusion (12) is an inclined surface structure, and the hook (4) smoothly detaches from the hoisting hole (3) through the inclined surface structure.

5. The lifting tool for the power battery pack for a bus according to claim 1 is characterized in that: The longitudinal section of the hook (4) is an inverted trapezoidal structure.

6. The lifting tool for the power battery pack for a bus according to claim 1 is characterized in that: The number of groups of hook members (4) is four, and the four groups of hook members (4) are symmetrically arranged at the bottom of the left and right ends of the mounting frame (1).

7. The lifting tool for the power battery pack for a bus according to claim 1 is characterized in that: The mounting frame (1) comprises an upper L-shaped plate (13), a lower L-shaped plate (14), a tail plate (15) and two groups of forks (16) arranged symmetrically on the left and right. The rear sides of the two groups of forks (16) are connected to the action ends of an external forklift. The front sides of the two groups of forks (16) are provided with a lifting beam (17). The two ends of the upper L-shaped plate (13) are respectively connected to the upper parts of the two groups of forks (16), the two ends of the lower L-shaped plate (14) are respectively connected to the lower parts of the two groups of forks (16), the two ends of the tail plate (15) are respectively connected to the ends of the two groups of lifting beams (17), and the hook (4) is provided at the bottom of the lifting beam (17).

8. The lifting tool for the power battery pack for a bus according to claim 7 is characterized in that: The mounting frame (1) further comprises a reinforcing plate (18), wherein the four corners of the reinforcing plate (18) are respectively connected to the upper L-shaped plate (13) and the lower L-shaped plate (14).

9. The lifting tool for the power battery pack for a bus according to claim 8, characterized in that: The hoisting beam (17) and the reinforcing plate (18) are both provided with weight-reducing holes (19).

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