Workpiece rotation accumulation device and battery box coating system

Abstract

The present application relates to a kind of workpiece rotary accumulation and release device and the battery box coating system installed with the workpiece rotary accumulation and release device, workpiece rotary accumulation and release device includes conveying track and the workpiece hanger moving along conveying track;Workpiece hanger includes the trolley assembly moving along conveying track and is hoisted to the rotary hanger assembly in the bottom end of trolley assembly, conveying track is provided with the rotation driving mechanism capable of driving rotary hanger assembly rotation.This workpiece rotary accumulation and release device and battery box coating system can realize the accumulation and release interval reduction when small workpiece accumulation and release by rotating workpiece direction, workpiece accumulation and release can realize single trolley group workpiece transverse accumulation and release, to realize more compact arrangement process line, again can satisfy the shortcoming of small workpiece length direction overlong accumulation and release quantity, process line length does not increase under the condition of satisfying more workpiece accumulation and release storage, while greatly reduce the labor intensity of worker, improve production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery box processing, and in particular to a battery box coating system and a workpiece rotating and accumulating device for the battery box coating system. BACKGROUND

[0002] The surface of the battery box of an electric vehicle needs to be sprayed during processing. In order to improve the spraying efficiency, an automatic continuous production line is generally used. However, the ordinary spraying production line occupies a very large area, and it is impossible for manufacturers with insufficient space to use it. At the same time, since the battery box needs to be treated on both sides during production, the operator needs to manually turn over the workpiece during the operation of the ordinary production line, which requires a large amount of labor intensity of the operator, and in addition, the manual turning process is easy to cause the workpiece to shake and affect the surface quality. SUMMARY

[0003] The purpose of the present application is to overcome the defects in the prior art, and to provide a workpiece rotating and accumulating device which can greatly reduce the labor intensity of workers and ensure product quality, and a battery box coating system having the workpiece rotating and accumulating device.

[0004] The present application is realized by the following technical solutions:

[0005] A workpiece rotating and accumulating device, comprising a conveying track and a workpiece lifting device moving along the conveying track;

[0006] The workpiece lifting device comprises a trolley assembly moving along the conveying track and a rotating lifting device assembly lifted at the bottom end of the trolley assembly, the rotating lifting device assembly comprising a lifting shaft lifted at the bottom end of the trolley assembly, a rotating gear disc assembly rotationally connected to the bottom end of the lifting shaft, and a workpiece lifting assembly lifted at the bottom end of the rotating gear disc assembly;

[0007] The conveying track is provided with a rotating driving mechanism capable of driving the rotating hoist assembly to rotate, the rotating driving mechanism comprises a support, a clamping assembly and a rotating driving assembly arranged on the support, the clamping assembly comprises a clamping frame, a clamping cylinder, a driving clamping plate and a driven clamping plate, the clamping frame is fixed on the support, the tail end of the clamping cylinder is hinged to the clamping frame, the telescopic end of the clamping cylinder is hinged to the driving clamping plate, the driving clamping plate and the driven clamping plate are rotatably connected to the clamping frame respectively, the clamping cylinder can drive the driving clamping plate to rotate so as to drive the driven clamping plate to link the hoisting shaft to clamp or release, the rotating driving assembly comprises a moving seat, a moving seat driving cylinder, a gear row support frame, a support frame driving cylinder and a gear row, the moving seat driving cylinder is arranged on the support and connected to the moving seat, the gear row support frame is slidably connected to the moving seat, the support frame driving cylinder is arranged on the moving seat and connected to the gear row support frame, the gear row is fixed to one side of the gear row support frame, the moving seat driving cylinder can drive the moving seat to move forward and backward so as to make the gear row engage or separate from the rotating gear disc group.

[0008] Since the workpiece surface treatment process may be slow, in order to stop the hoist with unfinished surface treatment from moving and realize accumulation, at least one stopper for blocking the movement of the workpiece hoist is arranged on the conveying track, the stopper comprises a mounting frame, a stop cylinder, a connecting rod assembly and a baffle, the stopper is fixed on the conveying track, the tail end of the stop cylinder is hinged to the mounting frame, the telescopic end of the stop cylinder is connected to the baffle through the connecting rod assembly, the stop cylinder can drive the baffle to swing through the connecting rod assembly so as to block or release the trolley assembly on the conveying track.

[0009] Since the hoist with finished surface treatment needs to continue to move to the next station along the accumulation chain, in order to improve the processing efficiency and avoid the influence of the front station needing accumulation on the rear station, it is necessary to ensure the continuous operation of the accumulation chain.

[0010] In order to ensure the continuity of the production line, the trolley assembly designed in the application comprises a trolley body, rollers arranged on the trolley body and capable of moving along the conveying track, and a stop block arranged on the top end of the trolley body and capable of being blocked by the baffle; in order to realize cooperation and linkage with the baffle, the stop block comprises a front stop block and a rear stop block, the front stop block and the rear stop block are rotatably connected to the trolley body, the front stop block and the rear stop block have a gap capable of allowing the bottom end of the accumulation chain to extend in, the trolley body can be moved along the conveying track by pushing the front stop block when the accumulation chain moves, the front stop block and the rear stop block have extension parts abutting against each other, the front stop block has an inclined surface capable of being slidably connected to the baffle, the rear stop block also has an inclined surface, and the baffle can drive the front stop block and the rear stop block to press down when it swings, so that the front stop block cannot be pushed when the accumulation chain moves.

[0011] In order to facilitate hoisting of the workpiece, in a preferred embodiment of the present application, the workpiece hoisting set comprises a hanger hoisted at the bottom end of the rotating gear disc set, a hoisting rod hoisted at the bottom end of the hanger, and at least one lifting tool fixed on the hoisting rod.

[0012] Since the lifting tool may shake after rotation or at the turning of the conveying track, the workpiece rotating and stacking device is also designed with a ground guiding mechanism for guiding the workpiece hoisting set, which comprises a guiding base fixed on the ground and a pair of guiding plates fixed at the top end of the guiding base, and the two guiding plates have a guiding channel capable of guiding the bottom end of the hoisting rod.

[0013] Since the rotating lifting tool assembly needs to be capable of rotating while avoiding axial rotation of the main shaft, the hoisting shaft is also designed with an automatic locking assembly for preventing axial rotation of the rotating gear disc set, which comprises a swing block in rotational connection with the hoisting shaft and a buckle fixed at the bottom end of the swing block, and the rotating gear disc set is provided with a insertion hole capable of inserting the buckle;

[0014] Corresponding to the automatic locking assembly, in order to realize unlocking, one side of the bracket is also provided with a lifting assembly for jacking up the automatic locking assembly, which comprises a lifting cylinder and a lifting plate, the lifting cylinder is connected with the lifting plate, and the lifting plate is correspondingly arranged below the swing block, and the lifting cylinder can drive the lifting plate to jack up so as to drive the swing block to overturn and make the buckle disengage from the insertion hole.

[0015] The present application also provides a battery box coating system, which has the above-mentioned workpiece rotating and stacking device capable of realizing automatic stacking and rotation of the lifting tool.

[0016] In order to install as many batteries as possible to improve processing efficiency, the workpiece hoisting set is provided with a plurality of lifting tools for installing battery boxes distributed from top to bottom, and each lifting tool is provided with a slot capable of inserting one end of the battery box at both sides, and the slot is fixed with a heat-resistant magnet group capable of adsorbing the battery box.

[0017] The workpiece rotating and stacking device and the battery box coating system can realize reduction of stacking spacing by rotating the workpiece direction when stacking small workpieces, can realize horizontal stacking of workpieces of a single vehicle set when stacking workpieces, can realize more compact process line arrangement, can meet the shortcomings of small workpiece length direction overlong stacking quantity, can meet more workpiece stacking storage without increasing the length of the process line, can greatly reduce the labor intensity of workers, and can improve production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a perspective view of the workpiece rotating and stacking device of the present application;

[0019] Figure 2 Fig. 3 is a perspective view of the workpiece lifting assembly of the present application;

[0020] Figure 3 Fig. 4 is a perspective view of the trolley assembly of the present application;

[0021] Figure 4 Fig. 5 is a perspective view of the stopper of the present application;

[0022] Figure 5 Fig. 6 is a perspective view of the rotating lifting assembly of the present application;

[0023] Figure 6 Fig. 7 is a perspective view of the lifting assembly of the present application;

[0024] Figure 7 Fig. 8 is a perspective view of the workpiece lifting assembly of the present application;

[0025] Figure 8 Fig. 9 is a perspective view of one direction of the rotating driving mechanism of the present application;

[0026] Figure 9 Fig. 10 is a perspective view of another direction of the rotating driving mechanism of the present application;

[0027] Figure 10 Fig. 11 is a perspective view of the ground guiding mechanism of the present application;

[0028] Figure 11 Fig. 12 is a perspective view of the bottom structure of the ground guiding mechanism of the present application. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present application will be described in detail below with reference to the drawings, so that the advantages and features of the present application can be more easily understood by those skilled in the art, and the scope of protection of the present application can be more clearly defined. In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "side", "end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0030] As Figure 1The workpiece rotation and accumulation device shown includes a conveying track 1, a workpiece lifting device 3 that moves along the conveying track 1, a rotation drive mechanism set on the conveying track, and a ground guide mechanism 5 set below the conveying track 1. The conveying track 1 has a track groove, and an accumulation chain 2 is set in the track groove. The top of the workpiece lifting device 3 rolls along the track groove. Several stops 6 are also set on the conveying track to prevent the workpiece lifting device 3 from moving.

[0031] Specifically, such as Figure 2 The workpiece lifting device shown includes a trolley assembly 31 that moves along a conveying track and a rotating lifting device assembly mounted on the bottom of the trolley assembly. The rotating lifting device assembly includes a lifting shaft 32 mounted on the bottom of the trolley assembly 31, a rotating gear assembly 33 rotatably connected to the bottom of the lifting shaft 32, a workpiece lifting assembly 35 mounted on the bottom of the rotating gear assembly 33, and an automatic locking assembly 34 disposed on the lifting shaft 32. The workpiece 7 (battery box) is mounted on the workpiece lifting assembly 35.

[0032] Combination Figure 3 The trolley assembly 31 shown includes a trolley body 3102, rollers 3103 mounted on the trolley body 3102 and movable along the transport track, a stop block mounted on the top of the trolley body 3102 and blocked by a baffle, and a hanging plate 3101 fixed to the bottom of the trolley body 3102. The stop includes a front stop 3104 and a rear stop 3105, which are rotatably connected to the trolley body 3102. There is a gap between the front stop 3104 and the rear stop 3105 that allows the bottom end of the accumulation chain to extend into. When the accumulation chain moves, the trolley body 3102 can be moved along the conveying track by pushing the front stop 3104. There are extensions 3106 and 3107 that abut against each other between the front stop 3104 and the rear stop 3105. The outer side of the front stop 3104 has a ramp surface that can be slidably connected to the baffle of the stopper, and the outer side of the rear stop 3105 has a ramp surface that can be slidably connected to the accumulation chain.

[0033] Corresponding to the car components, combined Figure 4 The stop device shown includes a mounting frame 61, a stop cylinder 62, a connecting rod assembly 63, and a baffle 64. The mounting frame 61 is detachably mounted on the conveyor track. The tail end of the stop cylinder 62 is hinged to the mounting frame 61, and the front end (telescopic end) of the stop cylinder 62 is connected to the baffle 64 via the connecting rod assembly 63. The end of the mounting frame 61 has a guide shaft and a guide groove for the baffle 64 to move. The baffle 64 cooperates with the front stop block of the trolley assembly. The stop cylinder 62 can drive the baffle 64 to swing through the connecting rod assembly 63, thereby blocking or releasing the trolley assembly on the conveyor track. It should be noted that the stop device is provided at the rotary drive mechanism and before and after entering the rotary drive mechanism.

[0034] Combination Figure 5 The rotating lifting assembly shown has a lifting shaft 32 that can be oscillatingly suspended at the bottom of the lifting plate of the trolley assembly. The rotating gear assembly 33 is rotatably connected to the lifting shaft 32 via bearings. A hanging device 3302 is fixed to the bottom surface of the rotating gear assembly 33. The rotating gear assembly 33 has four evenly distributed waist-shaped insertion holes 3301. The automatic locking assembly includes a swing block 34 rotatably connected to the lifting shaft 32 and a columnar buckle 3401 fixed to the bottom of the swing block 34. Due to gravity, the buckle 3401 is inserted into one of the insertion holes 3301.

[0035] Combination Figure 6 The lifting assembly, which corresponds to the automatic locking assembly, includes a mounting frame 81, a lifting cylinder 82, and a lifting plate 83. The lifting cylinder 82 is fixed to the bottom of the mounting frame 81 and connected to the lifting plate 83. The lifting plate 83 is correspondingly arranged below the swing block. The lifting cylinder 82 can drive the lifting plate 83 to lift, thereby causing the swing block to flip and disengage from the insertion hole.

[0036] Combination Figure 7 The workpiece hoisting assembly shown includes a hoisting rod 3501, a hanger fixed to the top of the hoisting rod 3501, and at least one hoisting device 3502 fixed to the hoisting rod 3501. The hanger is fixed to the bottom of the rotating gear assembly. Multiple hoisting devices 3502 for installing battery boxes are distributed from top to bottom on the hoisting rod 3501. The hoisting device 3502 has a rectangular structure. Each side of the hoisting device 3502 has a slot for inserting one end of the battery box. A heat-resistant magnet assembly 3503 that can attract the battery box is fixed in the slot. That is, one hoisting device 3502 can insert two battery boxes.

[0037] Combination Figure 8 , Figure 9The rotating driving mechanism shown comprises a support 41 and a clamping assembly and a rotating driving assembly arranged on the support 41. The clamping assembly comprises a clamping frame 45, a clamping cylinder 46, a driving clamping plate 48 and a driven clamping plate 49, the clamping frame 45 is fixed on the support 41, the tail end of the clamping cylinder 46 is hinged to the clamping frame 45, the telescopic end of the clamping cylinder 46 is hinged to the driving clamping plate 48, the driving clamping plate 48 and the driven clamping plate 49 are rotatably connected to the clamping frame 45 through positioning columns 410 respectively, the clamping cylinder 46 can drive the driving clamping plate 48 to rotate so as to drive the driven clamping plate 49 to clamp or loosen the hoisting shaft in linkage; the rotating driving assembly comprises a moving seat 43, a moving seat driving cylinder 42, a gear row support frame 413, a support frame driving cylinder 411 and a gear row 412, the tail end of the moving seat driving cylinder 42 is hinged to the support 41, the telescopic end of the moving seat driving cylinder 42 is connected to the moving seat 43, the moving seat 43 is slidingly connected to the guide rail 44, the gear row support frame 413 is slidingly connected to the moving seat 43 through a guide rail 47, the tail end of the support frame driving cylinder 411 is hinged to the moving seat 43, the telescopic end of the support frame driving cylinder 411 is connected to the gear row support frame 413, the gear row 412 is fixed to one side of the gear row support frame 413, the moving seat driving cylinder 42 can drive the moving seat 43 to move forward and backward so as to make the gear row 412 engage with or separate from the rotating gear disc set, and the support frame driving cylinder 411 can drive the gear row support frame 413 to move left and right so as to make the gear row 412 drive the rotating gear disc set to rotate.

[0038] In combination Figure 10 , Figure 11 The ground guiding mechanism shown comprises a guiding base 51 fixed on the ground and a pair of guiding plates 52 fixed on the top end of the guiding base 51, the two guiding plates 52 have a guiding channel capable of guiding the bottom end of the boom 3501, in addition, a plurality of sets of stop components are arranged at the bottom end of the two guiding plates 52, the stop components are evenly distributed along the guiding channel, every two stop components form a set, the stop component comprises a fixed block 53 and a rotating block 54, the rotating block 54 is rotatably connected to the fixed block 53 and elastically contacts the fixed block 53 through a spring, a V-shaped channel is formed between the two opposite rotating blocks 54, when the bottom end of the boom 3501 moves forward (left end in the drawing) along the guiding channel, the two rotating blocks 54 are pushed to rotate outward, the boom 3501 passes through smoothly, after the boom 3501 passes through, the two rotating blocks 54 reset to block the boom 3501, the boom 3501 cannot back off, thereby avoiding the boom to shake back and forth.

[0039] The workpiece rotating accumulation and placing device can be used in a coating system of a battery box, and can realize automatic accumulation and placing and rotation of a lifting appliance.

[0040] In combination Figures 1-10The application runs, and the accumulation and deposit chain 2 continuously moves along the conveying track 1, the bottom end of the accumulation and deposit chain 2 is inserted between the front stopper 3104 and the rear stopper 3105 of the trolley assembly 31, then the accumulation and deposit chain 2 pushes the front stopper 3104 to make the trolley assembly 31 move forward as a whole, enters the front of the rotary driving mechanism, is blocked by the stopper 6 first, the stop cylinder 62 of the stopper 6 drives the baffle 64 to swing through the connecting rod assembly 63, the baffle 64 pushes the front stopper 3104 to rotate counterclockwise, then the front stopper 3104 deflects downward, at this time, the accumulation and deposit chain 2 does not contact the front stopper 3104 and continues to move forward, when the last lifting appliance completes rotation, the front side stopper 6 of the rotary driving mechanism releases, then the trolley assembly 31 and the rotary lifting appliance assembly enter the rotary driving mechanism, and the stopper 6 at the rotary driving mechanism blocks them; at this time, the moving seat driving cylinder 42 drives the moving seat 43 to extend forward, so that the gear row 412 is engaged with the rotary gear disc set 33, the clamping cylinder 46 drives the driving clamping plate 48 and the driven clamping plate 49 to rotate to clamp the lifting shaft 32, the lifting cylinder 82 drives the lifting plate 83 to lift to drive the swing block 34 to overturn upward to make the buckle 3401 disengage from the insertion hole 3301, so that the rotary gear disc set 33 is unlocked, then the support frame driving cylinder 411 drives the gear row support frame 413 to move left, so that the gear row 412 drives the rotary gear disc set 33 to rotate counterclockwise, so that the whole lifting appliance 3502 rotates 180 degrees, so that the positions of the battery boxes on both sides of the lifting appliance are exchanged; the lifting appliance after the overturning moves backward and is guided by the two guide plates 52 to enter the subsequent work station.

[0041] In the description of the embodiments of the present application, unless otherwise clearly defined and limited, the terms "mount", "connect", "connect", "set", "provided with" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection, it can be mechanical connection, or electrical connection, it can be direct connection, or indirect connection through an intermediate medium, or the internal communication of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] Finally, it should be noted that: the above examples are only specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit it, the protection scope of the present application is not limited to this, although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that any skilled in the art within the technical range disclosed by the present application, the technical scheme recorded in the foregoing examples can be modified or easily thought of changes, or equivalent replacement of some technical features, and these modifications, changes or replacements do not make the essence of the corresponding technical scheme deviate from the spirit and scope of the technical scheme of the embodiments of the present application, and should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A workpiece rotary deposition device, comprising a conveying track and a workpiece hanger moving along the conveying track, characterized in that: the workpiece hanger comprises a trolley assembly moving along the conveying track and a rotary hanger assembly hoisted at the bottom end of the trolley assembly, the rotary hanger assembly comprises a hoisting shaft hoisted at the bottom end of the trolley assembly, a rotary gear disc set rotatably connected to the bottom end of the hoisting shaft, and a workpiece hoisting set hoisted at the bottom end of the rotary gear disc set; the conveying track is provided with a rotary driving mechanism capable of driving the rotary hanger assembly to rotate, the rotary driving mechanism comprises a support and a clamping assembly, a rotary driving assembly provided on the support, the clamping assembly comprises a clamping frame, a clamping cylinder, a driving clamping plate and a driven clamping plate, the clamping frame is fixed on the support, the tail end of the clamping cylinder is hinged to the clamping frame, the extension end of the clamping cylinder is hinged to the driving clamping plate, the driving clamping plate and the driven clamping plate are rotatably connected to the clamping frame respectively, the clamping cylinder can drive the driving clamping plate to rotate so as to drive the driven clamping plate to link the hoisting shaft to be clamped or released, the rotary driving assembly comprises a moving seat, a moving seat driving cylinder, a gear row support frame, a support frame driving cylinder and a gear row, the moving seat driving cylinder is provided on the support and connected to the moving seat, the gear row support frame is slidingly connected to the moving seat, the support frame driving cylinder is provided on the moving seat and connected to the gear row support frame, the gear row is fixed to one side of the gear row support frame, the moving seat driving cylinder can drive the moving seat to move forward and backward so as to make the gear row engage with or separate from the rotary gear disc set, the support frame driving cylinder can drive the gear row support frame to move left and right so as to make the gear row drive the rotary gear disc set to rotate; the hoisting shaft is further provided with an automatic locking assembly for preventing the rotary gear disc set from rotating axially, the automatic locking assembly comprises a swing block rotatably connected to the hoisting shaft and a buckle fixed to the bottom end of the swing block, the rotary gear disc set is provided with a insertion hole capable of inserting the buckle; the support is further provided with a lifting assembly for jacking the automatic locking assembly, the lifting assembly comprises a lifting cylinder and a lifting plate, the lifting cylinder is connected to the lifting plate, the lifting plate is correspondingly arranged below the swing block, the lifting cylinder can drive the lifting plate to jack up so as to drive the swing block to flip and make the buckle disengage from the insertion hole. the conveying track is further provided with at least one stopper for blocking the movement of the workpiece hanger, the stopper comprises a mounting frame, a stop cylinder, a connecting rod assembly and a baffle, the stopper is fixed on the conveying track, the tail end of the stop cylinder is hinged to the mounting frame, the extension end of the stop cylinder is connected to the baffle through the connecting rod assembly, the stop cylinder can drive the baffle to swing through the connecting rod assembly so as to block or release the trolley assembly on the conveying track. the trolley assembly comprises a trolley body, rollers arranged on the trolley body and capable of moving along the conveying track, and a stop block arranged at the top end of the trolley body and capable of being blocked by the baffle. ​ 2. The workpiece rotational build-up apparatus according to claim 1, characterized by: ​ 3. The workpiece rotational build-up apparatus according to claim 2, characterized by: ​ 4. The workpiece rotational build-up apparatus according to claim 3, characterized by: The stopper comprises a front stopper and a rear stopper, the front stopper and the rear stopper are rotationally connected with the trolley body, the front stopper and the rear stopper have a gap capable of allowing the bottom end of the accumulation chain to extend in, the accumulation chain can move the trolley body along the conveying track by pushing the front stopper when the accumulation chain moves, the front stopper and the rear stopper have extension portions abutting against each other, the front stopper and the rear stopper have inclined surfaces respectively, the stopper can drive the front stopper and the rear stopper to press down when the stopper swings, so that the accumulation chain cannot push the front stopper when the accumulation chain moves.

5. The workpiece rotational build-up apparatus according to claim 1, characterized by: The workpiece hoisting assembly comprises a hanger hoisted at the bottom end of the rotating gear disc assembly, a lifting rod hoisted at the bottom end of the hanger, and at least one lifting tool fixed on the lifting rod.

6. The workpiece rotational build-up apparatus according to claim 5, characterized by: The workpiece rotating accumulation device further comprises a ground guiding mechanism for guiding the workpiece hoisting assembly, the ground guiding mechanism comprises a guiding base fixed on the ground and a pair of guiding plates fixed on the top end of the guiding base, and the two guiding plates have a guiding channel capable of guiding the bottom end of the lifting rod.

7. A battery case painting system characterized by comprising: The battery box coating system has the workpiece rotating accumulation device according to any one of claims 1-6.

8. The battery box painting system of claim 7, wherein: A plurality of lifting tools for mounting the battery box are distributed on the workpiece hoisting assembly from top to bottom, the lifting tools have a slot capable of allowing one end of the battery box to be inserted on both sides of the lifting tool respectively, and a heat-resistant magnet group capable of adsorbing the battery box is fixed in the slot.

Images