Battery replacement elevator set

Abstract

This utility model provides a battery swapping lifting unit, including a body plate, which is horizontally rectangular, with several support frames on its top. A drive shaft is horizontally rotatably connected to the support frames. A lifting column is coaxially connected to the drive shaft, and a lifting cable is sleeved on the outer wall of the lifting column. One end of the lifting cable is fixedly connected to the lifting column, and the free end is connected to the bottom of the body plate. The lifting cable located between the body plate and the lifting column is U-shaped with its opening facing upwards. Several limiting cylinders are provided at the bottom of the body plate, and a limiting groove is vertically formed at the bottom of each limiting cylinder. This utility model provides a battery swapping lifting unit that can improve battery swapping efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of battery swapping technology and relates to a lifting unit for battery swapping. Background Technology

[0002] New energy vehicles refer to automobiles that use unconventional vehicle fuels as their power source (or use conventional vehicle fuels but employ new onboard power devices), integrating advanced technologies in vehicle power control and drive, resulting in vehicles with advanced technical principles and new technologies and structures. New energy vehicles include four main types: hybrid electric vehicles (HEVs), battery electric vehicles (BEVs, including solar-powered vehicles), fuel cell electric vehicles (FCEVs), and other new energy vehicles (such as supercapacitors, flywheels, and other high-efficiency energy storage devices). Unconventional vehicle fuels refer to fuels other than gasoline and diesel.

[0003] Currently, in addition to small new energy vehicles such as passenger cars and delivery vehicles, the market also offers larger new energy vehicles such as trailers, trucks, buses, and heavy trucks. Correspondingly, the battery packs of these larger new energy vehicles are also much larger in mass and volume; for example, the battery packs of some new energy heavy trucks weigh over 3 tons. Swapping these batteries requires specialized equipment to lift and move them, and the battery packs also have frames for suspension and movement. The battery swapping system mainly includes a lifting device for connecting and disconnecting from the frame on top of the battery, and a structure for lifting and moving the lifting device (usually horizontal X and Y-axis tracks, while the lifting device can be raised and lowered to create a Z-axis effect). Because of the large mass and significant inertia of the battery packs in heavy trucks, the horizontal movement and stopping of the battery pack usually need to be relatively slow to ensure stability and safety, resulting in low battery swapping efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a battery swapping lift unit, which aims to solve the problem of low battery swapping efficiency.

[0005] To solve the above-mentioned technical problems, this utility model provides a battery swapping elevator unit, comprising:

[0006] The body plate is horizontally rectangular, and several support frames are provided on the top of the body plate;

[0007] A drive shaft and a motor for driving the drive shaft to rotate, the drive shaft being horizontally rotatably connected to the support frame;

[0008] A lifting auger is coaxially connected to the drive shaft. A lifting cable is sleeved on the outer wall of the lifting auger. One end of the lifting cable is fixedly connected to the lifting auger, and the free end is connected to the bottom of the body plate. The lifting cable located between the body plate and the lifting auger is U-shaped with the opening facing upward.

[0009] A limiting cylinder is provided at the bottom of the main body plate, and a limiting groove is vertically formed at the bottom of the limiting cylinder.

[0010] The present invention is further configured such that there are two limiting cylinders, which are distributed at the middle of both ends of the main body plate.

[0011] The present invention is further provided with a guide portion that is flared and opens downward at the bottom of the limiting cylinder.

[0012] The present invention is further configured such that four lifting columns are provided, and the four lifting columns are located above the four corners of the main body plate. Each of the four corners of the main body plate has a vertically arranged L-shaped stabilizing frame at its bottom. A stabilizing wheel is vertically rotatably arranged on the outer side of the stabilizing frame. An annular stabilizing groove is opened on the outer wall of the stabilizing wheel. A first friction block is also provided on the stabilizing frame. The space between the first friction block and the stabilizing groove is formed for the lifting cable to move through. Each lifting column has a stabilizing frame below it.

[0013] The present invention is further configured such that a spiral groove is formed on the outer wall of the lifting screw, and the lifting cable portion wound around the lifting screw is attached to the inner wall of the spiral groove.

[0014] The present invention is further configured such that an anti-detachment frame is horizontally arranged on the support frame above the lifting screw, a second friction block is provided at the bottom of the anti-detachment frame, and the top of the lifting cable wound on the lifting screw is attached to the bottom of the second friction block.

[0015] The present invention is further configured such that the drive shaft includes a cylindrical portion and a square portion connected to the inner end of the cylindrical portion, the longitudinal section of the cylindrical portion is circular, the longitudinal section of the square portion is square, the cylindrical portion is rotatably connected to the support frame, and the output shaft of the motor is connected to the inner end of the square portion;

[0016] The lifting auger has a square hole in the middle for the square part to pass through. The inner wall of the square hole is rotatably provided with a drag-reducing component that moves against the outer wall of the square part. The outer end of the cylindrical part is located outside the support frame, and a drive gear is coaxially provided at the outer end of the cylindrical part.

[0017] A synchronization frame is horizontally arranged on the support frame, and a long, narrow synchronization hole is vertically opened through the synchronization frame. A synchronization part is arranged inside the synchronization hole and movably engages with the synchronization hole. A first stabilizing part is horizontally arranged at the top of the synchronization part, and a second stabilizing part is horizontally arranged at the bottom. The first stabilizing part and the second stabilizing part are respectively movably attached to the top and bottom of the synchronization frame. A synchronization arm is vertically arranged at the bottom of both ends of the second stabilizing part. A clearance hole is opened on the synchronization arm for the square part to move through. A rotating ring is arranged on the opposite side of the two synchronization arms and is rotatably connected to the lifting auger. The square part moves through the rotating ring.

[0018] A synchronizing screw is horizontally rotatably mounted on the synchronizing frame. The middle part of the synchronizing screw passes through the synchronizing part and is threadedly engaged with the synchronizing part. A driven gear is provided at the outer end of the synchronizing screw, which meshes with the top of the driving gear. The lifting cable located between the lifting screw and the stabilizing wheel is always vertical.

[0019] The present invention is further configured such that the motor is a dual-axis motor, and two motors are provided on the main body plate, one of which is used to drive the two adjacent drive shafts to rotate.

[0020] The present invention is further configured such that a connecting column is vertically arranged on the main body plate, a connecting frame with a U-shaped longitudinal section opening downwards is arranged at the bottom of the connecting column, a connecting pin is horizontally arranged in the middle of the connecting frame, a connecting plate is arranged at the free end of the lifting cable, and the connecting pin moves horizontally through the connecting plate.

[0021] The present invention is further configured such that a first hole and two second holes are vertically provided through the main body plate, the connecting column is vertically movable through the first hole, the top of the connecting column is horizontally fixed with an overlapping plate, and the bottom of the overlapping plate is vertically provided with two anti-rotation pins that respectively move through the two second holes.

[0022] It also includes several adjusting plates, one side of which has a slot for the connecting post to be inserted, and an anti-rotation hole for the anti-rotation pin to pass through vertically through the adjusting plate. Several adjusting plates are stacked vertically between the bottom of the overlapping plate and the top of the main body plate.

[0023] Compared with the prior art, this utility model provides a lifting unit for battery swapping. First, the frame on top of the battery is connected and lowered by a clamp, that is, the battery pack is put in and taken out by the clamp. The structure of this application is used to lift the clamp. The specific structure of the clamp is not within the scope of protection of this application, but the top of the clamp needs to have four wheels for use with the four lifting cables of this application. Specifically, the lifting cables of this application need to go around the four wheels on the clamp, and the lifting of the four wheels and the clamp (and battery pack) is controlled by the winding and unwinding of the lifting cables by the lifting screw.

[0024] Secondly, the body plate is also externally connected to a structure that drives it, enabling the body plate to move in the X and Y directions (the Z-direction movement is achieved by a fixture). However, the structure that drives the body plate is not the object of protection claimed in this application, and will not be further restricted or elaborated here.

[0025] When lifting the battery pack, the motor controls the drive shaft to rotate, causing the lifting auger to release more lifting cables. Under the gravity of the clamp, the lifting cables remain taut and move downwards. Once the clamp has secured the top frame of the battery pack, the motor drives the lifting auger to rotate via the drive shaft, allowing more lifting cables to be wound around it. This also raises the height of the wheels and the clamp. A sway bar is vertically welded to the top of the clamp to cooperate with the limiting groove. As the clamp rises, the top of the sway bar inserts into the limiting groove. When the clamp is raised to its highest height, the outer wall of the anti-sway bar fits against the inner wall of the limiting groove, ensuring relative stability between the body plate and the clamp in the horizontal direction. Then, the body plate moves horizontally, simultaneously moving the clamp and battery pack horizontally. Because the anti-sway bar and limiting cylinder work together, they effectively prevent the battery pack from swaying, allowing for a slight increase in speed during horizontal movement. Similarly, the battery pack can be stopped quickly after reaching the appropriate position, maintaining its positional stability. Subsequent charging simply involves lowering the battery pack vertically downwards (the battery pack, the vehicle, and the charging station all have compatible contacts; simply placing and removing the battery pack completes the swap, eliminating the need for manual operation. Of course, manual connection and disconnection of power can be performed by workers depending on the situation). This significantly improves the overall efficiency of the battery swapping process. Furthermore, since the anti-sway bar remains attached to the inner wall of the limiting groove after the battery pack is moved to the appropriate position and stops, the battery pack is in a stationary state at this time. When it is lowered later (either for charging or onto the vehicle body), the positional stability of the battery pack can be further improved, resulting in better operation. Attached Figure Description

[0026] Figure 1This is a schematic diagram of the structure of Embodiment 1 of this utility model in use;

[0027] Figure 2 yes Figure 1 Enlarged view of section A;

[0028] Figure 3 This is a schematic diagram of the lifting screw section in Embodiment 1 of this utility model;

[0029] Figure 4 yes Figure 3 Enlarged view of section B;

[0030] Figure 5 This is a schematic diagram of the synchronization part in Embodiment 1 of this utility model;

[0031] Figure 6 This is a schematic diagram of the lifting screw column in Embodiment 1 of this utility model;

[0032] Figure 7 This is a schematic diagram of the connecting column portion in Embodiment 1 of this utility model;

[0033] Figure 8 yes Figure 7 Enlarged view of section C;

[0034] Figure 9 This is a schematic diagram of the adjusting plate and connecting column in Embodiment 1 of this utility model;

[0035] Figure 10 This is a schematic diagram of Embodiment 2 of the present invention;

[0036] Figure 11 yes Figure 10 Enlarged view of section D.

[0037] The components are as follows: 1. Body plate; 2. Support frame; 3. Drive shaft; 3a. Cylindrical part; 3b. Square part; 4. Motor; 5. Lifting auger; 6. Lifting cable; 7. Limiting cylinder; 8. Guide part; 9. Stabilizing frame; 10. Stabilizing wheel; 11. Stabilizing groove; 12. First friction block; 13. Spiral groove; 14. Anti-detachment frame; 15. Second friction block; 16. Square hole; 17. Drive gear; 18. Synchronizing frame; 19. Synchronizing hole; 20. Synchronizing part; 21. First stabilizing part; 22. Second stabilizing part; 23. Synchronizing arm; 24. Clearance hole; 25. Rotating ring; 26. Synchronizing screw; 27. Driven gear; 28. Connecting column; 29. ​​Connecting frame; 30. Connecting pin; 31. Connecting plate; 32. Overlapping plate; 33. Anti-rotation pin; 34. Adjusting plate; 35. Insertion groove; 36. Anti-rotation hole. Detailed Implementation

[0038] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the battery-changing lifting unit proposed in this utility model. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, used only to facilitate and clarify the illustration of the embodiments of this utility model. The same or similar reference numerals in the drawings represent the same or similar parts.

[0039] Example 1

[0040] A type of battery-changing elevator unit, such as Figures 1 to 9 As shown, it includes:

[0041] The body plate 1 is horizontally rectangular, and a number of support frames 2 are provided on the top of the body plate 1.

[0042] The drive shaft 3 and the motor 4 for driving the drive shaft 3 to rotate are horizontally rotatably connected to the support frame 2.

[0043] A lifting column 5 is coaxially connected to the drive shaft 3. A lifting cable 6 is sleeved on the outer wall of the lifting column 5. One end of the lifting cable 6 is fixedly connected to the lifting column 5, and the free end is connected to the bottom of the body plate 1. The lifting cable 6 located between the body plate 1 and the lifting column 5 is U-shaped with the opening facing upward.

[0044] A limiting cylinder 7 is provided at the bottom of the main body plate 1, and a limiting groove is vertically formed at the bottom of the limiting cylinder 7.

[0045] Two limiting cylinders 7 are provided, and the two limiting cylinders 7 are distributed in the middle of both ends of the main body plate 1.

[0046] The bottom of the limiting cylinder 7 is provided with a funnel-shaped guide part 8 that opens downwards, which can guide the anti-sway bar so that the anti-sway bar can enter the limiting cylinder 7 better; at the same time, the top of the anti-sway bar can be made into a pointed shape, which further facilitates the insertion of the anti-sway bar into the limiting groove.

[0047] Four lifting columns 5 are provided, and the four lifting columns 5 are located above the four corners of the body plate 1. At the bottom of each of the four corners of the body plate 1, a stabilizing frame 9 with an L-shaped cross-section is vertically provided. A stabilizing wheel 10 is vertically rotatably provided on the outer side of the stabilizing frame 9. An annular stabilizing groove 11 is opened on the outer wall of the stabilizing wheel 10. A first friction block 12 is also provided on the stabilizing frame 9. A space for the lifting cable 6 to move through is formed between the first friction block 12 and the stabilizing groove 11. Each lifting column 5 has a stabilizing frame 9 below it.

[0048] The outer wall of the lifting screw 5 is provided with a spiral groove 13, and the lifting cable 6 wound on the lifting screw 5 is partially attached to the inner wall of the spiral groove 13.

[0049] The drive shaft 3 includes a cylindrical part 3a and a square part 3b connected to the inner end of the cylindrical part 3a. The longitudinal section of the cylindrical part 3a is circular, and the longitudinal section of the square part 3b is square. The cylindrical part 3a is rotatably connected to the support frame 2, and the output shaft of the motor 4 is connected to the inner end of the square part 3b.

[0050] The lifting screw column 5 has a square hole 16 in the middle for the square part 3b to pass through. The inner wall of the square hole 16 is rotatably provided with a drag-reducing component that moves against the outer wall of the square part 3b. The outer end of the cylindrical part 3a is located outside the support frame 2, and the outer end of the cylindrical part 3a is coaxially provided with a drive gear 17.

[0051] A synchronization frame 18 is horizontally arranged on the support frame 2. A long, narrow synchronization hole 19 is vertically opened through the synchronization frame 18. A synchronization part 20 is arranged inside the synchronization hole 19 and movably engages with the synchronization hole 19. A first stabilizing part 21 is horizontally arranged at the top of the synchronization part 20 and a second stabilizing part 22 is horizontally arranged at the bottom. The first stabilizing part 21 and the second stabilizing part 22 are respectively movably attached to the top and bottom of the synchronization frame 18. A synchronization arm 23 is vertically arranged at the bottom of both ends of the second stabilizing part 22. A clearance hole 24 is opened on the synchronization arm 23 for the square part 3b to move through. A rotating ring 25 is arranged on the opposite side of the two synchronization arms 23 and is rotatably connected to the lifting auger 5 (the lifting auger 5 can rotate relative to the rotating ring 25, but the two cannot move relative to each other along the length direction of the drive shaft 3). The square part 3b moves through the rotating ring 25.

[0052] A synchronous screw 26 is horizontally rotatably mounted on the synchronous frame 18. The middle part of the synchronous screw 26 passes through the synchronous part 20 and is threadedly engaged with the synchronous part 20. The outer end of the synchronous screw 26 is provided with a passive gear 27 that meshes with the top of the driving gear 17. The lifting cable 6 located between the lifting screw column 5 and the stabilizing wheel 10 is always vertical.

[0053] The motor 4 is a dual-axis motor, and two motors 4 are provided on the main body plate 1. One motor 4 is used to drive the two adjacent drive shafts 3 to rotate.

[0054] A connecting column 28 is vertically arranged on the main body plate 1. A connecting frame 29 with a U-shaped longitudinal section opening downwards is arranged at the bottom of the connecting column 28. A connecting pin 30 is horizontally arranged in the middle of the connecting frame 29. A connecting plate 31 is arranged at the free end of the lifting cable 6. The connecting pin 30 moves horizontally through the connecting plate 31.

[0055] The main body plate 1 is vertically penetrated by a first hole and two second holes. The connecting column 28 is vertically movable through the first hole. The top of the connecting column 28 is horizontally fixed with an overlapping plate 32. The bottom of the overlapping plate 32 is vertically provided with two anti-rotation pins 33 that are respectively movable through the two second holes.

[0056] It also includes several adjusting pieces 34. One side of each adjusting piece 34 has a slot 35 for the connecting post 28 to be inserted, and an anti-rotation hole 36 is provided vertically through the adjusting piece 34 for the anti-rotation pin 33 to pass through. Several adjusting pieces 34 are arranged in an up-and-down stacked manner between the bottom of the overlapping plate 32 and the top of the main body plate 1.

[0057] This utility model provides a battery swapping lifting unit. First, the frame on top of the battery is connected and lowered by a clamp, that is, the battery pack is put in and taken out by the clamp. The structure of this application is used to lift the clamp. The specific structure of the clamp is not within the scope of protection of this application, but the top of the clamp needs to have four wheels for use with the four lifting cables 6 of this application. Specifically, the lifting cables 6 of this application need to go around the four wheels on the clamp, and the lifting cables 6 are controlled by the winding and unwinding of the lifting screw 5 to lift the four wheels and the clamp (and battery pack).

[0058] Secondly, the main board 1 also has an external structure for driving it (such as...). Figure 1 As shown), and enables the body plate 1 to move in the X and Y directions (the Z direction movement is achieved by the fixture), but the structure that drives the body plate 1 is not the object of protection claimed in this application, and will not be further restricted or described here.

[0059] When lifting the battery pack, the motor 4 controls the drive shaft 3 to rotate, causing the lifting column 5 to release more lifting cables 6. Under the gravity of the clamp, the lifting cables 6 remain taut and move downwards. After the clamp fixes the top frame of the battery pack, the motor 4 drives the lifting column 5 to rotate through the drive shaft 3, thereby winding more lifting cables 6 onto it, and also raising the height of the wheels and the clamp. A sway bar that cooperates with the limiting groove is vertically welded to the top of the clamp, and as the clamp rises, the top of the sway bar will insert into the limiting groove. When the clamp is raised to its highest height, the outer wall of the anti-sway bar is attached to the inner wall of the limiting groove, which ensures relative stability between the body plate 1 and the clamp in the horizontal direction. Then, the body plate 1 moves horizontally, which in turn drives the clamp and battery pack to move horizontally. Since the anti-sway bar and the limiting cylinder 7 work together, the battery pack can be effectively prevented from swaying. Thus, the battery pack can be accelerated appropriately during horizontal movement. Similarly, the battery pack can be stopped relatively quickly after being transported to the appropriate position, and the positional stability of the battery pack can still be guaranteed after stopping. Afterwards, the battery pack can simply be lowered vertically for charging (the battery pack, the vehicle, and the charging position all have compatible contacts, and battery swapping can be achieved simply by placing and removing the battery pack, without manual operation by workers; of course, depending on the actual situation, workers can also manually connect and disconnect the power). This improves the overall efficiency of battery swapping. Furthermore, since the anti-sway bar remains attached to the inner wall of the limiting groove after the battery pack is moved to the appropriate position and stops, the battery pack is in a stationary state at this time. When it is lowered later (either for charging or onto the vehicle body), the positional stability of the battery pack can be further improved, resulting in better operation.

[0060] In actual use, the two dual-axis motors at the top of the plate can simultaneously drive four drive shafts 3 to rotate, and simultaneously drive four lifting screws 5 to wind or release the lifting cable 6. This not only improves the compactness of the equipment, but also improves the synchronization and ensures the stability of the clamps and battery pack.

[0061] During operation, the lifting cable 6, located between the stabilizing frame 9 and the connecting frame 29, acts on the wheels of the clamp. Since the positions of the connecting frame 29 and the stabilizing frame 9 are fixed, the direction of the lifting cable 6 acting on the wheels of the clamp is stable and continuously upward. This not only effectively prevents the lifting cable 6 from falling off the wheels (which have grooves on their outer walls and an upward-opening cover-like structure on their brackets to limit the lifting cable 6), but also ensures that the clamp can move horizontally by maintaining the angle of the lifting cable 6, further ensuring the stability of the battery pack's movement.

[0062] When the square part 3b rotates, the cylindrical part 3a also rotates simultaneously. The cylindrical part 3a, through the driving gear 17, drives the driven gear 27 to rotate, which in turn drives the synchronous screw 26 to rotate. The synchronous screw 26 drives the synchronous part 20, the first stabilizing part 21, the second stabilizing part 22, and the synchronous arm 23 to rotate. The two synchronous arms 23 then drive the lifting auger to slide horizontally on the square part 3b. During the process of the lifting column 5 rotating to release the lifting cable 6, if the lifting column 5 remained stationary, the lifting cable 6 between the lifting column 5 and the stabilizing frame 9 would tilt. However, in this application, while the lifting column 5 releases the lifting cable 6, it also moves horizontally, ensuring that the lifting cable 6 between the lifting column 5 and the stabilizing frame 9 remains vertical. This guarantees the suspension stability of the lifting cable 6 and reduces the force on the stabilizing frame 9 and the stabilizing wheel 10, thus ensuring their service life. The lifting cable 6, which passes through the stabilizing wheel 10 and the first friction block 12, can drive the stabilizing wheel 10 to rotate, thus protecting the stabilizing wheel 10 and the first friction block 12 and extending their service life. It should also be noted that the sizes of the driving gear 17 and the driven gear 27, as well as the pitch of the synchronous lead screw 26, need to be designed according to the actual situation. The attached diagram is for illustrative purposes only and does not represent the actual structure.

[0063] During operation, the first stabilizing part 21 and the second stabilizing part 22 at the top and bottom of the synchronization part 20 are movably attached to the synchronization frame 18. Preferably, the bottom of the first stabilizing part 21 and the top of the second stabilizing part 22 are connected to columns or beads to reduce resistance. At the same time, the drag-reducing element in the square hole 16 also facilitates relative movement between the lifting screw 5 and the square part 3b. An anti-detachment plate can also be welded to the side of the support frame 2, and then a third friction block is welded to the inner side of the anti-detachment plate. The third friction block is attached to the outer side of the lifting cable 6 wound on the lifting screw 5, which can also improve the positional stability of the lifting cable 6.

[0064] The lifting cable 6 is wound inside the spiral groove 13, so that the length of the lifting cable 6 released when the lifting screw 5 rotates by the same angle is fixed. This can prevent the angle of the clamp from being unstable due to different release lengths of the lifting cable 6 at different positions.

[0065] As the lifting cables 6 are used, they will stretch to different lengths, and different structures will deform to different degrees. At this time, it is necessary to adjust the height of the connecting column 28 and the connecting frame 29 so that the four lifting cables 6 can still maintain a horizontal state for lifting clamps.

[0066] When adjusting the height of the connecting frame 29, simply raise the connecting column 28 until the anti-rotation pin 33 is higher than the body plate 1 (if the body plate 1 is hollow and three-dimensional, it only needs to be higher than the bottom part of the body plate 1) and all the adjusting plates 34. Then, add or remove the adjusting plates 34 as needed (by attaching the locking slot 35 to the connecting column 28). After that, lower the overlapping plate 32 vertically so that the anti-rotation pin 33 passes through all the anti-rotation holes 36 and the second hole. At this point, the position of the adjusting plates 34 is fixed. By changing the number of adjusting plates at the bottom of the overlapping plate 32, the height adjustment of the connecting column 28 and the connecting frame 29 is completed. The adjusting plates 34 are made of a high-strength material and are relatively thin, thus achieving better adjustment.

[0067] During subsequent use, the weight of the clamp (and battery pack) will keep the lap plate 32 in a stable position; however, depending on the actual situation, a nut can still be threaded onto the connecting post 28 and made to abut against the bottom of the body plate 1 to further ensure positional stability.

[0068] Example 2

[0069] The difference from Example 1 is that, as Figure 10 and Figure 11 As shown, an anti-detachment frame 14 is horizontally arranged on the support frame 2 above the lifting screw column 5. A second friction block 15 is provided at the bottom of the anti-detachment frame 14. The top of the lifting cable 6, which is wound around the lifting screw column 5, is attached to the bottom of the second friction block 15.

[0070] At this point, the drive shaft 3 is a single cylindrical section, and the lifting auger 5 is fixedly connected to the drive shaft 3. Although the lifting cable 6 between the stabilizer 9 and the lifting auger 5 may tilt during subsequent use, the second friction block 15 can press down on the lifting cable 6, ensuring the stability of the connection between the lifting cable 6 and the lifting auger 5, and allowing the lifting auger 5 to lower furniture normally. Furthermore, all four lifting augers 5 are in the same condition, thus ensuring the stability of the clamps and battery pack during placement and removal.

[0071] It should also be noted that all terms such as "set up" and similar descriptive words in this application (especially the specification) indicate that two structures have or exist a connection relationship. However, the specific means by which the two are connected are not limited in detail, and are usually conventional connection methods. That is, the means should be understood as prior art and do not need to be elaborated. For example, "m is set up with n" only indicates that structure m has structure n, and whether the two are connected by welding, riveting, adhesive, or integral molding is within the scope of protection of this application. Similarly, "x is rotatably set up with y" only indicates that y and x can rotate relative to each other, and whether the two are connected by a bearing, or whether y directly passes through x and is rotatably connected to x, or other feasible methods, are all within the scope of protection of this application.

[0072] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A battery-changing elevator unit, characterized in that, include: The main body plate (1) is horizontally rectangular, and a number of support frames (2) are provided on the top of the main body plate (1). A drive shaft (3) and a motor (4) for driving the drive shaft (3) to rotate, the drive shaft (3) being horizontally rotatably connected to the support frame (2); A lifting column (5) is coaxially connected to the drive shaft (3). A lifting cable (6) is sleeved on the outer wall of the lifting column (5). One end of the lifting cable (6) is fixedly connected to the lifting column (5), and the free end is connected to the bottom of the body plate (1). The lifting cable (6) located between the body plate (1) and the lifting column (5) is U-shaped with the opening facing upward. A limiting cylinder (7) is provided at the bottom of the main body plate (1), and a limiting groove is vertically opened at the bottom of the limiting cylinder (7).

2. The battery-changing elevator unit according to claim 1, characterized in that, Two limiting cylinders (7) are provided, and the two limiting cylinders (7) are distributed in the middle of both ends of the main body plate (1).

3. A battery-swapping elevator unit according to claim 1 or 2, characterized in that, The bottom of the limiting cylinder (7) is provided with a funnel-shaped guide part (8) that opens downwards.

4. The battery-changing elevator unit according to claim 1, characterized in that, Four lifting columns (5) are provided. The four lifting columns (5) are located above the four corners of the body plate (1). At the bottom of the four corners of the body plate (1), there is a vertically arranged stabilizing frame (9) with an L-shaped cross-section. A stabilizing wheel (10) is vertically rotatably arranged on the outside of the stabilizing frame (9). An annular stabilizing groove (11) is opened on the outer wall of the stabilizing wheel (10). A first friction block (12) is also provided on the stabilizing frame (9). A space for the lifting cable (6) to move through is formed between the first friction block (12) and the stabilizing groove (11). Each lifting column (5) has a stabilizing frame (9) below it.

5. A battery-changing elevator unit according to claim 4, characterized in that, The outer wall of the lifting screw (5) is provided with a spiral groove (13), and the lifting cable (6) wound on the lifting screw (5) is partially attached to the inner wall of the spiral groove (13).

6. A battery-swapping elevator unit according to claim 5, characterized in that, The support frame (2) is horizontally provided with an anti-detachment frame (14) located above the lifting screw (5). The bottom of the anti-detachment frame (14) is provided with a second friction block (15). The top of the lifting cable (6) wrapped around the lifting screw (5) is attached to the bottom of the second friction block (15).

7. A battery-changing elevator unit according to claim 5, characterized in that, The drive shaft (3) includes a cylindrical part (3a) and a square part (3b) connected to the inner end of the cylindrical part (3a). The longitudinal section of the cylindrical part (3a) is circular, and the longitudinal section of the square part (3b) is square. The cylindrical part (3a) is rotatably connected to the support frame (2), and the output shaft of the motor (4) is connected to the inner end of the square part (3b). The lifting auger (5) has a square hole (16) in the middle for the square part (3b) to pass through. The inner wall of the square hole (16) is rotatably provided with a drag-reducing component that moves against the outer wall of the square part (3b). The outer end of the cylindrical part (3a) is located outside the support frame (2), and the outer end of the cylindrical part (3a) is coaxially provided with a drive gear (17). A synchronization frame (18) is horizontally arranged on the support frame (2). A long, narrow synchronization hole (19) is vertically opened through the synchronization frame (18). A synchronization part (20) is provided in the synchronization hole (19) and is movably engaged with the synchronization hole (19). A first stabilizing part (21) is horizontally arranged at the top of the synchronization part (20), and a second stabilizing part (22) is horizontally arranged at the bottom. The first stabilizing part (21) and the second stabilizing part (22) are respectively movably attached to the top and bottom of the synchronization frame (18). A synchronization arm (23) is vertically arranged at the bottom of both ends of the second stabilizing part (22). A clearance hole (24) is opened on the synchronization arm (23) for the square part (3b) to move through. A rotating ring (25) is provided on the opposite side of the two synchronization arms (23) and is rotatably connected to the lifting screw (5). The square part (3b) moves through the rotating ring (25). A synchronous screw (26) is horizontally rotatably mounted on the synchronous frame (18). The middle part of the synchronous screw (26) passes through the synchronous part (20) and is threadedly engaged with the synchronous part (20). The outer end of the synchronous screw (26) is provided with a passive gear (27) that meshes with the top of the driving gear (17). The lifting cable (6) located between the lifting screw (5) and the stabilizing wheel (10) is always vertical.

8. A battery-changing elevator unit according to claim 4, characterized in that, The motor (4) is a dual-axis motor. Two motors (4) are provided on the body plate (1). One motor (4) is used to drive the two adjacent drive shafts (3) to rotate.

9. A battery-changing elevator unit according to claim 1, characterized in that, A connecting column (28) is vertically arranged on the main body plate (1). A connecting frame (29) with a U-shaped longitudinal section opening downwards is arranged at the bottom of the connecting column (28). A connecting pin (30) is horizontally arranged in the middle of the connecting frame (29). A connecting plate (31) is arranged at the free end of the lifting cable (6). The connecting pin (30) moves horizontally through the connecting plate (31).

10. A battery-changing elevator unit according to claim 9, characterized in that, A first hole and two second holes are provided vertically through the main body plate (1). The connecting column (28) moves vertically through the first hole. A lap plate (32) is fixedly installed horizontally at the top of the connecting column (28). Two anti-rotation pins (33) are vertically installed at the bottom of the lap plate (32) and move through the two second holes respectively. It also includes several adjusting pieces (34), one side of which is provided with a slot (35) for the connecting post (28) to be inserted, and a hole (36) is provided vertically through the adjusting piece (34) for the anti-rotation pin (33) to pass through. Several adjusting pieces (34) are arranged in an up-down stacked manner between the bottom of the overlapping plate (32) and the top of the main body plate (1).

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