Battery pack transfer device of automobile

Abstract

The invention relates to the technical field of automobile assembly transfer, and discloses an automobile battery pack transfer device which comprises a lower frame body and an upper frame body, the bottom of the upper frame body is clamped to the top of the lower frame body, a push frame is fixedly connected to the lower portion of the right side of the lower frame body, and rolling wheels are fixedly connected to the four corners of the bottom of the lower frame body; the outer wall of the lower frame body is provided with a flexible moving protection assembly used for protecting the automobile battery pack. Compared with the prior art that the automobile battery pack is surrounded and fixed by a fixing frame and directly collides and impacts with the fixing frame, the stability of the automobile battery pack in the transfer process is guaranteed, the safety protection performance of the automobile battery pack is improved, and the safety of the automobile battery pack is improved. And the sufficient stability in the feeding and discharging process ensures that the automobile battery pack is prevented from being collided, safety and convenience are achieved, the connection stability between the transfer frames is optimized, and the personal health of transfer operators is further guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of automobile component transportation, in particular to a vehicle battery pack transportation device. Background Art

[0002] After the production of automobile batteries is completed, they often need to be transported to major automobile companies for installation. Electric vehicle batteries are usually large and heavy, so professional equipment and technology are required for transportation. In addition, the transportation of battery packs also needs to take into account the safety and protection of the batteries to avoid damage or accidents during transportation, thereby assisting maintenance personnel or production line workers to handle battery packs more conveniently, improve work efficiency and ensure safety;

[0003] Since the production cost of batteries is high and batteries are flammable and explosive, if the batteries cannot be kept sufficiently stable during transportation, there will be huge safety hazards. Traditional battery fixing devices often use fixed frames, which are mostly fixed with bolts or nails to form a frame to surround and fix the batteries. The material of this type of fixed frame is relatively hard, and the protection effect on the battery pack is not comprehensive enough;

[0004] In addition, during the loading and unloading process of automotive battery packs, they will inevitably be subject to some external forces. For example, the robot arm needs to clamp the battery pack during the loading and unloading process. Collisions will occur between the robot arm and the transfer rack, causing the entire device to shake or shift. This requires continuous adjustment of the position of the device when the machine is loading and unloading, and continuous shaking will also cause collisions with the battery packs placed in the device, which is extremely inconvenient.

[0005] To this end, a battery pack transport device for a vehicle is proposed. Summary of the invention

[0006] The object of the present invention is to provide a battery pack transport device for a vehicle to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a vehicle battery pack transport device, comprising a lower frame and an upper frame, wherein the bottom of the upper frame is clamped on the top of the lower frame, a push frame is fixedly connected to the middle of the lower frame away from the upper frame, rollers are fixedly connected to the four corners of the bottom of the lower frame, and a flexible mobile protection component for protecting the vehicle battery pack is arranged on the outer wall of the lower frame, wherein:

[0008] The flexible movable protection component comprises a pulley group, and the pulley group comprises a belt and two pulleys, the middle part of the lower pulley is fixedly connected to the inner middle part of the roller, the middle part of the upper pulley is rotatably connected to the middle part of the adjacent side of the lower frame, and the middle part of the lower pulley is fixedly connected to a gear, and a pair of toothed plates are slidably connected to the front and rear side surfaces of the lower frame, and a pair of telescopic columns are fixedly connected to the front and rear sides of the lower frame, and a T-shaped groove is opened in the middle part of the toothed plate, and a pair of guide strips are fixedly connected to the middle part of the front and rear sides of the lower frame, and the inner wall of the T-shaped groove is slidably connected to the outer wall of the guide strip, and the top of the toothed plate is fixedly connected to a protection frame, and rectangular grooves are opened at the four corners of the inner wall of the protection frame, and the middle part of the rectangular groove is fixedly connected to a vertical rod, and the outer wall of the vertical rod is located at the inner wall of the rectangular groove and is slidably connected to a movable block, and the outer wall of the vertical rod is located at the end away from the two movable blocks and is sleeved with a first spring, and the middle part of the inner wall of the four sides of the protection frame is provided with a semi-arc cushion;

[0009] The bottom of the lower frame is provided with a loading and unloading stable support assembly for stably supporting the lower frame and the upper frame, wherein:

[0010] The loading and unloading stable support assembly includes two electric telescopic rods, the electric telescopic rods on both sides are symmetrically arranged at the bottom of the lower frame body, the top ends of the electric telescopic rods on both sides are fixedly connected to the bottom of the lower frame body, the telescopic rod ends of the electric telescopic rods on both sides are fixedly connected to cross plates, the bottom sides of the cross plates on both sides are rotatably connected to adjustment plates, the ends of the adjustment plates on both sides that are away from each other are fixedly connected to protrusions, the bottom sides of the lower frame body are provided with oblique guide grooves, the outer walls of the protrusions on both sides are respectively slidably connected to the inner walls of the oblique guide grooves on both sides, and the bottoms of the protrusions on both sides are fixedly connected to abutment plates;

[0011] The middle parts of the four corners of the upper frame are provided with connecting and locking components for connecting the lower frame and the upper frame together, wherein:

[0012] The connecting locking assembly includes a hollow column, a push rod is slidably connected inside the hollow column, one end of the push rod located on the inner wall of the hollow column is fixedly connected to a movable column, a second spring is arranged inside the hollow column, the movable column is connected to the hollow column through the second spring, the middle parts of both sides of the movable column are rotatably connected to opening and closing strips, rectangular grooves are provided on both sides of the outer wall of the hollow column, a threaded column is fixedly connected to the outer wall of the end of the push rod away from the hollow column, and a threaded sleeve is threadedly connected to the outer wall of the threaded column

[0013] Preferably, the toothed plate is meshingly connected to the gear, and one end of the telescopic column close to the gear is fixedly connected to the bottom of the toothed plate.

[0014] Preferably, one end of the first spring is fixedly connected to the inside of the movable block, and the other end of the first spring is fixedly connected to the inside of the protective frame.

[0015] Preferably, the outer walls of the hollow columns are respectively arranged through the middle parts of the four corners of the frame body on the corresponding sides.

[0016] Preferably, one end of the second spring is fixedly connected to the inside of the movable column, and the other end of the second spring is fixedly connected to the inside of the hollow column.

[0017] Preferably, the outer walls of the opening and closing strips on both sides are rotatably connected to the inner walls of the rectangular grooves on both sides respectively.

[0018] Preferably, through holes are provided in the middle of the four corners of the top ends of the lower frame body and the upper frame body, and the size of the through holes matches the outer diameter of the hollow column.

[0019] Preferably, the upper and lower sides of the semi-arc cushion are fixedly connected to the inside of the movable block.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. When the vehicle battery pack is transported as a whole by pushing the transport device through the push rod, the protective frame can be lifted and moved to surround and protect the packaged battery pack. At the same time, by setting flexible contact protection on the inner walls of the four sides of the protective frame, when the vehicle battery pack is subjected to bumps and shakes, the force is dispersed by the movable block and the spring by squeezing the semi-arc cushion. Compared with the surrounding and fixing of the fixing frame in the prior art, the vehicle battery pack directly collides with the fixing frame, which ensures the stability of the vehicle battery pack during transportation and improves the safety protection performance of the vehicle battery pack.

[0022] 2. By setting a stable support structure for the entire transfer device, when the car battery pack is transferred and unloaded and reloaded, the abutment plate can be moved downward and adjusted to contact the ground until the ground is deformed and flattened, thereby increasing the friction between the contact and the ground. The rubber abutment plate contacts the ground to support the transfer device, ensuring the overall stability of the loading device during loading and unloading, avoiding shaking, and thus eliminating the need to adjust the position of the loading device multiple times. In addition, sufficient stability during loading and unloading ensures that the car battery pack is protected from collision, making it safer and more convenient.

[0023] 3. By stacking and stacking the two transfer racks together, a hollow column passes through the middle of the two, and the opening and closing half strips are used for abutment and limiting, and the hollow column is locked in the middle of the two by rotating the threaded sleeve. In this way, in the process of stacking and stacking the multi-layer transfer racks to transport the automobile battery packs, the connection stability between the transfer racks is better optimized, avoiding the upper transfer rack from tilting from above due to bumps and shaking, and the battery pack falling off, thereby improving the stability of the automobile battery pack during transportation and further ensuring the personal safety of the transfer operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of the overall device of the present invention;

[0025] Figure 2 For the present invention Figure 1 The enlarged schematic diagram of point A in the middle;

[0026] Figure 3 It is a front view schematic diagram of the present invention;

[0027] Figure 4 For the present invention Figure 3 The enlarged schematic diagram of point B in the middle;

[0028] Figure 5 For the present invention Figure 3 The enlarged schematic diagram of the center C;

[0029] Figure 6 This is a schematic diagram of the flexible mobile protection component of the present invention;

[0030] Figure 7 For the present invention Figure 6 The enlarged schematic diagram of point D in the middle;

[0031] Figure 8 This is a schematic diagram of the internal structure of the protection frame of the present invention;

[0032] Fig. 9 It is a schematic diagram of the structure of the connecting and locking part of the present invention;

[0033] Fig.10 It is a schematic diagram of the connection and locking assembly of the present invention;

[0034] Fig.11 It is a schematic diagram of the transverse section of the hollow column of the present invention;

[0035] Fig.12 It is a schematic diagram of the stable support assembly for loading and unloading materials of the present invention.

[0036] In the figure:

[0037] 1. Lower frame; 2. Upper frame; 3. Push frame; 4. Roller;

[0038] The flexible mobile protection assembly includes: 51, a pulley assembly; 52, a gear; 53, a toothed plate; 54, a telescopic column; 55, a T-shaped slot; 56, a guide bar; 57, a protection frame; 58, a rectangular groove; 59, a vertical rod; 510, a movable block; 511, a first spring; 512, a semi-arc cushion;

[0039] The loading and unloading stable support assembly includes: 61, electric telescopic rod; 62, horizontal plate; 63, oblique guide groove; 64, adjustment plate; 65, convex block; 66, abutment plate;

[0040] The connecting and locking components include: 71, hollow column; 72, rectangular groove; 73, push rod; 74, threaded column; 75, threaded sleeve; 76, movable column; 77, second spring; 78, opening and closing strip; 79, through hole. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figures 1 to 12 , is an embodiment of the present invention: a vehicle battery pack transport device, comprising a lower frame 1 and an upper frame 2, the bottom of the upper frame 2 is clamped on the top of the lower frame 1, a push frame 3 is fixedly connected to the middle of the side of the lower frame 1 away from the upper frame 2, and rollers 4 are fixedly connected to the four corners of the bottom of the lower frame 1, and a flexible mobile protection component for protecting the vehicle battery pack is arranged on the outer wall of the lower frame 1, wherein:

[0043] The flexible mobile protection component includes a pulley group 51, which includes a belt and two pulleys. The middle part of the lower pulley is fixedly connected to the middle part of the inner side of the roller 4, and the middle part of the upper pulley is rotatably connected to the middle part of the adjacent side of the lower frame 1. The middle part of the lower pulley is fixedly connected to a gear 52. A pair of toothed plates 53 are slidably connected to the front and rear side surfaces of the lower frame 1. The toothed plates 53 are meshed with the gears 52. A pair of telescopic columns 54 are fixedly connected to the front and rear sides of the lower frame 1. One end of the telescopic column 54 close to the gear 52 is fixedly connected to the bottom of the toothed plate 53. A T-shaped slot 55 is opened in the middle of the toothed plate 53. A pair of guide strips 56 are fixedly connected to the middle parts of the front and rear sides of the lower frame 1. The inner walls of the T-shaped slots 55 The top of the tooth plate 53 is fixedly connected with a protection frame 57, and rectangular grooves 58 are provided at the four corners of the inner wall of the protection frame 57. The middle of the rectangular groove 58 is fixedly connected with a vertical rod 59. The outer wall of the vertical rod 59 is located at the inner wall of the rectangular groove 58 and is slidably connected with a movable block 510. The outer wall of the vertical rod 59 is located at the end away from the two movable blocks 510 and is sleeved with a first spring 511. One end of the first spring 511 is fixedly connected to the inside of the movable block 510, and the other end of the first spring 511 is fixedly connected to the inside of the protection frame 57. Semi-arc cushions 512 are provided in the middle of the inner walls of the four sides of the protection frame 57, and the upper and lower sides of the semi-arc cushions 512 are fixedly connected to the inside of the movable block 510.

[0044] The bottom of the four corners of the lower frame 1 are provided with hollow grooves corresponding to the shapes of the tops of the four corners, which are convenient for subsequent stacking. The cross section of the guide bar 56 is set to be T-shaped, which can correspond to the T-shaped groove 55 to ensure the stable movement of the tooth plate 53. The semi-arc cushion 512 is made of rubber, which can better handle and disperse the force when it comes into contact with the car battery pack.

[0045] Better: when the lower frame 1 and the upper frame 2 are in a stationary state, the car battery packs are stacked in the middle of the two. When they are transported later, the push frame 3 is used to push the transport. While the roller 4 rotates, the gear 52 is driven to rotate through the pulley group 51, which can drive the tooth plate 53 to move upward. The opening of the T-shaped groove 55 in the middle of the tooth plate 53 and the cooperation of the guide bar 56 can make the tooth plate 53 more stable when moving and avoid movement deviation. The setting of the telescopic column 54 can support the tooth plate 53. According to the height of the stacked lower frame 1 and the upper frame 2 and the selection of the corresponding size of the protective frame 57, the tooth plate 53 is moved upward. When moving, the protective frame 57 can be lifted up and moved to the outside of the lower frame 1 and the upper frame 2. At the same time, semi-arc cushions 512 are arranged on the inner walls of the four sides of the protective frame 57. When the car battery pack in the lower frame 1 and the upper frame 2 is collided and shaken, the battery pack first contacts the semi-arc cushions 512, and the force is squeezed on the semi-arc cushions 512. At the same time, the four corners of the semi-arc cushions 512 expand in opposite directions, and the movable block 510 moves on the inner wall of the rectangular groove 58 and then squeezes the first spring 511 sleeved on the outer wall of the vertical rod 59, so as to disperse the collision force on the car battery pack, thereby ensuring stable protection during transportation;

[0046] The bottom of the lower frame 1 is provided with a loading and unloading stable support assembly for stably supporting the lower frame 1 and the upper frame 2, wherein:

[0047] The loading and unloading stable support assembly includes two electric telescopic rods 61, the electric telescopic rods 61 on both sides are symmetrically arranged at the bottom of the lower frame 1, the tops of the electric telescopic rods 61 on both sides are fixedly connected to the bottom of the lower frame 1, the telescopic rod ends of the electric telescopic rods 61 on both sides are fixedly connected to the cross plates 62, the bottom sides of the cross plates 62 on both sides are rotatably connected to the adjustment plates 64, the ends of the adjustment plates 64 on both sides are fixedly connected to the protrusions 65 away from each other, the bottom sides of the lower frame 1 are provided with oblique guide grooves 63, the outer walls of the protrusions 65 on both sides are respectively slidably connected to the inner walls of the oblique guide grooves 63 on both sides, and the bottoms of the protrusions 65 on both sides are fixedly connected to the abutment plates 66;

[0048] The vertical section of the oblique guide groove 63 is an oblique shape, corresponding to the cross-sectional size of the protrusion 65, to ensure stability during movement and adjustment, and the inclination of the oblique guide groove 63 is set from high to low from the middle to the outside, to ensure that the abutment plate 66 can be lowered to contact the ground when moving outward, and lifted up and retracted when moving inward. The material of the abutment plate 66 is rubber, and the relatively rough rubber material can increase the friction force, thereby ensuring stability when abutting the ground;

[0049] Better: After the transfer of the car battery pack is completed and the material is unloaded and loaded again, the electric telescopic rods 61 on both sides are driven downward by the power supply to push the horizontal plate 62 downward, and the convex blocks 65 on both sides slide to the opposite side on the inner wall of the oblique guide groove 63 on both sides under the cooperation of the adjustment plates 64 rotatably connected on both sides, so that the abutment plates 66 on both sides are moved downward until they contact the ground and deform and flatten, thereby increasing the friction between the contact and the ground. The abutment plates 66 made of rubber material contact the ground to support the transfer device, thereby ensuring the stability of the entire loading and unloading process, avoiding the car battery pack from being bumped, and there is no need to constantly adjust the position of the device, which is safer and more reliable;

[0050] The middle of the four corners of the upper frame 2 are provided with a connecting locking component for connecting the lower frame 1 and the upper frame 2 as one, wherein:

[0051] The connecting and locking assembly includes a hollow column 71, the outer wall of the hollow column 71 is respectively penetrated and arranged at the middle of the four corners of the frame body 2 on the corresponding side, the inside of the hollow column 71 is slidably connected with a push rod 73, one end of the push rod 73 located on the inner wall of the hollow column 71 is fixedly connected with a movable column 76, a second spring 77 is arranged inside the hollow column 71, the movable column 76 is connected to the hollow column 71 through the second spring 77, one end of the second spring 77 is fixedly connected to the inside of the movable column 76, and the other end of the second spring 77 is fixedly connected to the hollow column 71. Inside, the middle parts of both sides of the movable column 76 are rotatably connected with opening and closing strips 78, and rectangular grooves 72 are provided on both sides of the outer wall of the hollow column 71. The outer walls of the opening and closing strips 78 on both sides are rotatably connected to the inner walls of the rectangular grooves 72 on both sides, and a threaded column 74 is fixedly connected to the outer wall of the end of the push rod 73 away from the hollow column 71. A threaded sleeve 75 is threadedly connected to the outer wall of the threaded column 74. Through holes 79 are provided in the middle of the four corners of the top of the lower frame body 1 and the upper frame body 2. The size of the through hole 79 matches the outer diameter of the hollow column 71.

[0052] Wherein: the diameter of the movable column 76 matches the inner diameter of the hollow column 71, and the push rod 73 pushes the movable column 76 to move more stably;

[0053] When the locking cam 75 is in the locked state, the locking cam 73 is in the locked state, and the locking cam 73 is in the locked state, so that the locking cam 73 can be locked to the locking cam 73 by pressing the second spring 77 on the locking cam 73.

[0054] The above implementation works as follows:

[0055] The initialization steps are as follows:

[0056] The upper rack 2 is stacked and mounted on the top of the lower rack 1, and the automobile battery pack to be transported is placed in the middle of the two.

[0057] The working steps are as follows:

[0058] like Fig. 9 - Fig.11 As shown, when the transfer rack is used to transfer the automobile battery pack, the multi-layer battery packs are stacked. Although a card connection is set between the two transfer racks, the stability of the connection between the two cannot be guaranteed. After the automobile battery packs are stacked, one end of the hollow column 71 is passed through the top of the lower frame 1 and the bottom of the upper frame 2, and the push rod 73 is pushed to squeeze the second spring 77. The movable column 76 will move toward the outer wall of the inner end of the rectangular groove 72, so that the opening and closing strips 78 on both sides are rotated and recovered to the inner walls of the rectangular grooves 72 on both sides. At this time, the outer wall of the hollow column 71 continues to be pushed toward the bottom center of the lower frame 1 and the upper frame 2 until the middle part of the outer wall of the hollow column 71 is sleeved in the middle part of the two, and the push rod 7 is released. 3 releases the thrust generated on it, pushes the push rod 73 outward by hand, and the opening and closing strips 78 on both sides are rotated and opened from the inside of the rectangular grooves 72 on both sides, and then abutted against the bottom outer wall of the upper frame body 2, and finally the threaded sleeve 75 on the outer wall of the threaded column 74 is rotated until the threaded sleeve 75 abuts against the outer wall of the upper frame body 2, so that the upper frame body 2 and the lower frame body 1 can be locked, ensuring the safety during transportation, better optimizing the connection stability between the transportation racks, avoiding the upper transportation rack from tilting from the top due to bumps and shakes, and preventing the battery pack from falling off, thereby improving the stability of the automobile battery pack during transportation and further protecting the personal health of the transportation operators;

[0059] like Figure 1 - Figure 8 As shown, due to the high production cost of batteries and the fact that batteries are flammable and explosive items, there will be huge safety hazards if the batteries cannot be kept sufficiently stable during transportation. Traditional battery fixing devices often use fixed frames for fixing. The material of such fixed frames is relatively hard, and the protective effect on the battery pack is not comprehensive enough. The transportation is pushed by the push frame 3, and the roller 4 follows the rotation while the gear 52 is driven to rotate through the pulley group 51, which can drive the tooth plate 53 to move upward. The opening of the T-shaped groove 55 in the middle of the tooth plate 53 and the cooperation of the guide bar 56 can make the tooth plate 53 more stable when moving and avoid movement deviation. The setting of the telescopic column 54 can support the tooth plate 53. According to the height of the stacked lower frame 1 and the upper frame 2 and the selection of the corresponding size of the protective frame 57, the tooth plate 53 moves upward. When the protective frame 57 is lifted up, it can be moved to the outside of the lower frame 1 and the upper frame 2. At the same time, semi-arc cushions 512 are arranged on the inner walls of the four sides of the protective frame 57. When the automobile battery pack in the lower frame 1 and the upper frame 2 is collided and shaken, the battery pack first contacts with the semi-arc cushions 512, and the force is squeezed on the semi-arc cushions 512. At the same time, the four corners of the semi-arc cushions 512 expand in opposite directions, and the movable block 510 moves on the inner wall of the rectangular groove 58 and then squeezes the first spring 511 sleeved on the outer wall of the vertical rod 59, so as to disperse the collision force on the automobile battery pack, thereby ensuring stable protection during transportation. Compared with the surrounding fixation of the fixing frame in the prior art, the automobile battery pack directly forms a collision impact with the fixing frame, which ensures the stability of the automobile battery pack during transportation and improves the safety protection performance of the automobile battery pack.

[0060] like Figure 2 and Fig.12As shown, in the process of loading and unloading the automobile battery pack, it is inevitable to be subjected to some external forces. For example, the robot arm needs to clamp the battery pack during the process of loading and unloading the battery pack, and there will be collisions between the robot arm and the transfer rack, causing the entire device to shake or shift, resulting in the need to continuously adjust the position of the device when the machine cooperates with loading and unloading. After the transportation of the automobile battery pack is completed, the material is unloaded and loaded again, and the electric telescopic rods 61 on both sides operate downward to push the cross plate 62 downward, and with the cooperation of the adjustment plates 64 rotatably connected on both sides, the protrusions 65 on both sides slide to the opposite side on the inner walls of the oblique guide grooves 63 on both sides, thereby moving the abutment plates 66 on both sides downward until they touch the ground and are deformed and flattened, increasing the size of the battery pack. The friction between the contact and the ground, the rubber abutment plate 66 contacts the ground to support the transfer device, thereby ensuring the stability of the overall loading and unloading process, avoiding bumps on the car battery pack, and there is no need to constantly adjust the position of the device, which is safer and more reliable. The vertical section of the oblique guide groove 63 is an inclined shape from high to low from the middle to the outside, corresponding to the cross-sectional size of the protrusion 65, ensuring stability during movement and adjustment, and the slope of the oblique guide groove 63 is set from high to low from the middle to the outside, ensuring that the abutment plate 66 can be lowered to contact the ground when moving outward, and lifted up and retracted when moving inward. The material of the abutment plate 66 is rubber, and the rubber material is relatively rough to increase friction, thereby ensuring stability when abutting the ground.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle battery pack transport device, characterized in that: The invention comprises a lower frame (1) and an upper frame (2), wherein the bottom of the upper frame (2) is clamped on the top of the lower frame (1), a push frame (3) is fixedly connected to the middle of the lower frame (1) away from the upper frame (2), rollers (4) are fixedly connected at the four corners of the bottom of the lower frame (1), and a flexible mobile protective component for protecting a vehicle battery pack is arranged on the outer wall of the lower frame (1), wherein: The flexible mobile protection component comprises a pulley group (51), the pulley group (51) comprises a belt and two pulleys, the middle part of the lower pulley is fixedly connected to the inner middle part of the roller (4), the middle part of the upper pulley is rotatably connected to the middle part of the adjacent side of the lower frame (1), the middle part of the lower pulley is fixedly connected to a gear (52), the front and rear side surfaces of the lower frame (1) are both slidably connected to a pair of toothed plates (53), the front and rear sides of the lower frame (1) are both fixedly connected to a pair of telescopic columns (54), the middle part of the toothed plates (53) are both provided with T-shaped grooves (55), the front and rear side surfaces of the lower frame (1) are both fixedly connected to a pair of A guide bar (56), the inner wall of the T-shaped slot (55) is slidably connected to the outer wall of the guide bar (56), the top of the tooth plate (53) is fixedly connected to a protective frame (57), the inner wall of the protective frame (57) is provided with rectangular grooves (58) at four corners, the middle of the rectangular groove (58) is fixedly connected to a vertical rod (59), the outer wall of the vertical rod (59) is located on the inner wall of the rectangular groove (58) and is slidably connected to a movable block (510), the outer wall of the vertical rod (59) is located at the end away from each other of the movable blocks (510) and is sleeved with a first spring (511), and the middle of the inner walls of the four sides of the protective frame (57) is provided with a semi-arc cushion (512); The bottom of the lower frame (1) is provided with a loading and unloading stable support assembly for stably supporting the lower frame (1) and the upper frame (2), wherein: The loading and unloading stable support assembly comprises two electric telescopic rods (61), the electric telescopic rods (61) on both sides are symmetrically arranged at the bottom of the lower frame (1), the top ends of the electric telescopic rods (61) on both sides are fixedly connected to the bottom of the lower frame (1), the telescopic rod ends of the electric telescopic rods (61) on both sides are fixedly connected to cross plates (62), the bottom sides of the cross plates (62) on both sides are rotatably connected to adjustment plates (64), the ends of the adjustment plates (64) on both sides that are away from each other are fixedly connected to protrusions (65), the bottom sides of the lower frame (1) are provided with oblique guide grooves (63), the outer walls of the protrusions (65) on both sides are slidably connected to the inner walls of the oblique guide grooves (63) on both sides, and the bottoms of the protrusions (65) on both sides are fixedly connected to abutment plates (66); The middle parts of the four corners of the upper frame (2) are provided with a connecting locking assembly for connecting the lower frame (1) and the upper frame (2) together, wherein: The connecting and locking assembly comprises a hollow column (71), a push rod (73) is slidably connected inside the hollow column (71), one end of the push rod (73) located on the inner wall of the hollow column (71) is fixedly connected to a movable column (76), a second spring (77) is arranged inside the hollow column (71), the movable column (76) is connected to the hollow column (71) through the second spring (77), the middle parts of both sides of the movable column (76) are rotatably connected to opening and closing strips (78), rectangular grooves (72) are provided on both sides of the outer wall of the hollow column (71), a threaded column (74) is fixedly connected to the outer wall of one end of the push rod (73) away from the hollow column (71), and a threaded sleeve (75) is threadedly connected to the outer wall of the threaded column (74).

2. The vehicle battery pack transport device according to claim 1, characterized in that: The toothed plate (53) is meshingly connected with the gear (52), and one end of the telescopic column (54) close to the gear (52) is fixedly connected to the bottom of the toothed plate (53).

3. The vehicle battery pack transport device according to claim 1, characterized in that: One end of the first spring (511) is fixedly connected to the inside of the movable block (510), and the other end of the first spring (511) is fixedly connected to the inside of the protective frame (57).

4. The vehicle battery pack transport device according to claim 1, characterized in that: The outer walls of the hollow columns (71) are respectively arranged to penetrate the middle parts of the four corners of the corresponding upper frame body (2).

5. The vehicle battery pack transport device according to claim 1, characterized in that: One end of the second spring (77) is fixedly connected to the inside of the movable column (76), and the other end of the second spring (77) is fixedly connected to the inside of the hollow column (71).

6. The vehicle battery pack transport device according to claim 1, characterized in that: The outer walls of the opening and closing strips (78) on both sides are rotatably connected to the inner walls of the rectangular grooves (72) on both sides.

7. The vehicle battery pack transport device according to claim 1, characterized in that: Through holes (79) are provided in the middle of the four corners of the top ends of the lower frame body (1) and the upper frame body (2), and the size of the through holes (79) matches the outer diameter of the hollow column (71).

8. The vehicle battery pack transport device according to claim 1, characterized in that: The upper and lower sides of the semi-arc-shaped cushion (512) are fixedly connected to the inside of the movable block (510).

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