Lifting mechanism and battery replacing station

Abstract

The utility model provides a lifting mechanism and a battery swap station. The lifting mechanism comprises two sets of lifting driving parts distributed in the first direction, and each lifting driving part comprises a driving motor, two sets of sliding assemblies driven by the driving motor and a track plate; the two sets of sliding block assemblies are arranged in the second direction, and the second direction is perpendicular to the first direction. The sliding assembly comprises sliding blocks and sliding rails, and the driving motor drives the two sliding blocks to move along the corresponding sliding rails at the same time. The track plate is connected with the sliding block, the track plate is provided with a groove structure, and the groove structure comprises an inclined groove; the lifting mechanism further comprises a lifting platform, the lifting platform comprises a platform body and a driving part fixed relative to the platform body, the driving part is inserted into the groove structure, the track plate moves in the second direction, the driving part and the inclined groove move relative to each other to drive the lifting platform to ascend and descend in the third direction, and the third direction is perpendicular to the first direction and the second direction. The lifting synchronism can be improved, and noise can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment, and in particular to a lifting mechanism and a battery replacement station. Background Art

[0002] The battery swap station is equipped with a tightening gun platform, which is controlled by a pneumatic vertical lifting mechanism. The pneumatic vertical lifting mechanism includes four cylinders, which are vertically distributed in the four corners of the unlocking platform. The battery swap station is equipped with an air compressor to supply air to the cylinders, and the extension and retraction of the cylinder rods of the cylinders are controlled by solenoid valves to realize the function of rising and falling of the tightening gun platform. During the execution of the action, the four cylinders are prone to asynchronous lifting strokes, causing the tightening gun platform to get stuck and unable to reach the designated point, resulting in vehicle battery swap failure; moreover, during the vehicle battery swap process, the tightening gun platform needs to be lifted and lowered multiple times, which causes the air compressor to start for a long time, making a lot of noise, reducing the battery swap experience. Utility Model Content

[0003] The purpose of this application is to provide a lifting mechanism and a battery replacement station that can improve lifting synchronization and reduce noise.

[0004] The present application provides a lifting mechanism, comprising two groups of lifting driving components distributed along a first direction, each of the lifting driving components comprising a driving motor, two groups of sliding assemblies driven by the driving motor, and a track plate; the two groups of sliding assemblies are arranged along a second direction, the second direction is perpendicular to the first direction; the sliding assembly comprises a sliding block and a sliding rail, the driving motor simultaneously drives the two sliding blocks to move along the corresponding sliding rail; the track plate is connected to the sliding block, the track plate is provided with a groove structure, and the groove structure comprises an inclined groove;

[0005] The lifting mechanism also includes a lifting platform, which includes a platform body and a driving member fixed relatively to the platform body, the driving member is inserted into the groove structure, the track plate moves along the second direction, the driving member and the inclined groove move relative to each other to drive the lifting platform to rise and fall along the third direction, and the third direction is perpendicular to the first direction and the second direction.

[0006] Optionally, the lifting drive component includes a screw nut assembly, the screw nut assembly includes a ball screw and a nut, the ball screw is connected to the drive motor, and the nut is connected to the slider.

[0007] Optionally, the groove structure includes a transverse groove, both ends of the inclined groove are connected to the transverse groove, and the transverse groove extends along the second direction.

[0008] Optionally, the driving motor drives the corresponding two track plates to be relatively close to each other or relatively far away from each other, and the groove structures of the two track plates in the lifting driving component are symmetrically arranged relative to the driving motor.

[0009] Optionally, the connecting member includes a bearing and a bolt connected to the bearing, the bearing is located in the groove structure, and the bolt is fixedly connected to the platform body.

[0010] Optionally, the lifting platform further comprises a support, the support is fixedly connected to the platform body, and the driving member is fixedly connected to the support via the bolts.

[0011] Optionally, it further includes a frame, and the lifting drive component is arranged on the frame.

[0012] Optionally, the frame is provided with a guide shaft extending along the third direction, and the platform body and the guide shaft are slidably connected.

[0013] Optionally, the lifting platform further includes a linear bearing, and the linear bearing is arranged between the platform body and the guide shaft.

[0014] The present application also provides a battery swap station, which is provided with a lifting mechanism as described in any one of the above items.

[0015] The lifting mechanism includes two groups of lifting drive components. The driving motor of each group of lifting drive components can control the movement of two track plates at the same time, so that the lifting and lowering of each side of the lifting mechanism are kept synchronous. As long as the two driving motors respond to the execution instructions of lifting and lowering at the same time, the synchronicity of the lifting and lowering of the lifting mechanism can be guaranteed, and the synchronicity control is better and more reliable. Moreover, each group of lifting drive components converts the linear motion of the slider into the lifting and lowering motion of the lifting platform through the track plate, so the driving motor and the slider are less stressed and the service life can be improved. Moreover, since the two groups of driving motors respond to the instructions synchronously, it is more conducive to achieving the synchronicity of lifting and lowering. In addition, the use of a driving motor for driving can reduce the noise compared to the air compressor drive of the background technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of the lifting mechanism in the embodiment of the present application;

[0017] Figure 2 for Figure 1 The structural diagram of the middle track board;

[0018] Figure 3 for Figure 1 A magnified view of the location of a trackpad;

[0019] Figure 4 for Figure 3 A schematic diagram of the three-dimensional structure of the middle driving component;

[0020] Figure 5 for Figure 1 An enlarged view of the position of a lead screw nut assembly;

[0021] Figure 6 for Figure 1 An enlarged view of the location of one of the lead screw nut assemblies.

[0022] The reference numerals in the accompanying drawings are described as follows:

[0023] 100-lifting platform; 101-platform body; 102-support; 103-driving member; 1031-bolt; 1032-bearing;

[0024] 200-lifting drive components;

[0025] 1-driving motor; 2-screw-nut assembly; 21-ball screw; 22-nut; 3-track plate; 3a-slot structure; 3a1-bevel slot; 3a2-first transverse slot; 3a3-second transverse slot; 4-sliding assembly; 41-slider; 42-slide rail; 5-linear bearing; 6-frame; 7-guide shaft. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] Please refer to Figure 1 , 2 , Figure 1 This is a structural schematic diagram of the lifting mechanism in the embodiment of the present application; Figure 2 for Figure 1 Schematic diagram of the structure of the middle track board 3.

[0028] The lifting mechanism in this embodiment includes two sets of lifting drive components 200 distributed along a first direction, each lifting drive component 200 includes a driving motor 1, two sets of sliding components 4 driven by the driving motor 1, and a track plate 3 connected to the sliding components 4. The two sets of sliding components 4 are arranged along a second direction, and the second direction is perpendicular to the first direction. Figure 1 As shown, the first direction and the second direction are located in the horizontal plane. This embodiment further defines a third direction, which is perpendicular to the first direction and the second direction and is a vertical direction. The sliding assembly 4 includes a slider 41 and a slide rail 42. The slide rail 42 extends along the second direction, and the slider 41 can move along the slide rail 42 in the second direction. The drive motor 1 of each set of lifting drive components 200 can simultaneously drive two sliders 41 to move along the corresponding slide rail 42. The drive motor 1 can be a servo motor. Figure 1As shown, in this way, the two driving motors 1 of the two sets of lifting driving components 200 respectively drive the corresponding two sliding blocks 41.

[0029] like Figure 2 As shown, the track plate 3 is provided with a groove structure 3a, which includes an oblique groove 3a1. The oblique groove 3a1 is located in the vertical plane, and there are angles between the oblique groove 3a1 and the third direction and the second direction, that is, the oblique groove 3a1 is inclined and has angles with the vertical direction and the horizontal direction.

[0030] The lifting mechanism also includes a lifting platform 100, which includes a platform body 101 and a driving member 103 fixed relative to the platform body 101. The driving member 103 is inserted into the groove structure 3a of the track plate 3. The driving member 103 and the platform body 101 are fixed. The platform body 101 has the freedom of movement only in the third direction, and other directions are restricted. At this time, since the slider 41 and the track plate 3 are fixed, when the slider 41 moves in the second direction, the track plate 3 also moves in the second direction synchronously, such as Figure 2 As shown in FIG. 1 , when the driving member 103 is located in the inclined slot 3a1, the track pad 3 moves along the second direction, and the driving member 103 and the inclined slot 3a1 move relative to each other. Figure 2 From a perspective, when the track pad 3 moves to the left, the driving member 103 moves relatively to the right, and moves to the high position of the inclined slot 3a1, while generating horizontal and vertical displacements, thereby rising; when the track pad 3 moves to the right, the driving member 103 moves relatively to the left, and moves to the low position of the inclined slot 3a1, thereby falling; while the driving member 103 rises and falls, it can also drive the lifting platform 100 to rise and fall along the third direction.

[0031] like Figure 3 As shown, Figure 3 for Figure 1 An enlarged view of the position of a drive motor 1.

[0032] The driving motor 1 in this embodiment can simultaneously drive the two slider assemblies 4 on both sides to produce a relative sliding. To this end, the driving motor 1 is equipped with a transmission box 9, which can transmit the power of the output shaft of the driving motor 1 to both sides at the same time. The transmission box 9 can be a reducer, and the output shaft of the driving motor 1 can transmit the power of the driving motor 1 to the second direction through the transmission box 9, and transmit it to the slider assembly 4 through the coupling 8.

[0033] With such arrangement, the lifting mechanism includes two groups of lifting drive components 200, and the driving motor 1 of each group of lifting drive components 200 can control the movement of two track plates 3 at the same time, so that the lifting and lowering of each side of the lifting mechanism are kept synchronous. As long as the two driving motors 1 respond to the execution instructions of lifting and lowering at the same time, the synchronicity of the lifting and lowering of the lifting mechanism can be guaranteed, and the synchronicity control is better and more reliable. Moreover, each group of lifting drive components 200 converts the linear motion of the slider 41 into the lifting and lowering motion of the lifting platform 100 through the track plate 3, so the driving motor 1 and the slider 41 carry less load, which can improve the service life, and because the two groups of driving motors respond to the instructions synchronously, it is more conducive to achieving the synchronicity of lifting and lowering. In addition, the use of the driving motor 1 for driving can also reduce the noise compared with the air compressor drive of the background technology.

[0034] like Figure 2 As shown, in this embodiment, the groove structure 3a of the track plate 3 includes a transverse groove, and both ends of the inclined groove 3a1 are connected with a transverse groove, which extends along the second direction, and the two transverse grooves extend in a direction away from each other relative to the inclined groove 3a1. The transverse groove located at a lower position in the third direction is defined as the second transverse groove 3a3, and the transverse groove located at a lower position is defined as the first transverse groove 3a2. In this way, when the lifting platform 100 is at the lowest position, its driving member 103 can be located in the lower first transverse groove 3a2, and when the lifting platform 100 is at the highest position, its driving member 103 can be located in the higher second transverse groove 3a3. In this way, when the lifting platform 100 is at the lowest position and the highest position, the driving member 103 is located in the horizontally extending transverse groove and will not be subjected to the component force along the second direction, thereby further ensuring that the driving member 103 is stably located in the current first transverse groove 3a2 or the second transverse groove 3a3, and will not move in the third direction due to external force or other factors, thereby further ensuring that the lifting platform 100 remains in a stable position after rising or falling. It can be seen that the slot structure 3a can also include two or more inclined slots 3a1, and adjacent inclined slots 3a1 are connected by a transverse slot, which is equivalent to multi-stage lifting to raise or lower the lifting platform 100 to a corresponding height according to needs.

[0035] like Figure 1 As shown, the groove structures 3a of the two track plates 3 in each set of lifting drive components 200 are mirror-imaged relative to the drive motor 1. The drive motor 1 in this embodiment drives the two track plates 3 to move simultaneously through the transmission box 9, which will drive the two track plates 3 to move closer to each other or away from each other, that is, the movement directions of the two track plates 3 are opposite, but because the two track plates 3 are mirror-imaged, the lifting directions of the lifting platform 100 driven by the track plates 3 remain consistent. Of course, when one drive motor 1 drives two corresponding track plates 3 to move, it can also be adjusted to move in the same direction through the corresponding transmission components, so the track plates 3 do not need to be mirror-imaged.

[0036] like Figure 4 , 5 As shown, Figure 4 for Figure 1 An enlarged view of the position of a track pad 3; Figure 5 for Figure 4 A schematic diagram of the three-dimensional structure of the middle driving member 103.

[0037] The driving member 103 in this embodiment includes a bearing 1032 and a bolt 1031 connected to the bearing 1032. The bearing 1032 is located in the groove structure 3a, and the bolt 1031 is fixedly connected to the platform body 101 of the lifting platform 100. When the bearing 1032 is located in the groove structure 3a, the track plate 3 and the driving member 103 move relative to each other in a relative rolling manner, and the friction resistance is small, so as to ensure the smoothness of lifting. The middle part of the bearing 1032 has a threaded hole, and the bolt 1031 can be inserted into the threaded hole for fixing.

[0038] like Figure 4 As shown, the lifting platform 100 in this embodiment further includes a support 102, which is fixedly connected to the platform body 101, and the driving member 103 is specifically fixedly connected to the support 102 through bolts 1031, that is, it is indirectly fixed to the platform body 101. The support 102 is an L-shaped support, the horizontal part of the L-shaped support is fixed to the platform body 101, and the vertical part of the L-shaped support is fixed to the bolt 1031, so that the driving member 103 is easy to establish a connection with the platform body 101, and the stress borne by the bolt 1031 when driving the platform body 101 to rise and fall can be reduced.

[0039] Please continue to refer to Figure 6 , Figure 6 for Figure 1 An enlarged view of the position of a screw nut assembly 2.

[0040] The lifting drive component 200 in this embodiment includes a transmission assembly, and the drive motor 1 drives the slider 41 to move along the second direction through the transmission assembly. The transmission assembly is specifically a screw nut assembly 2, which is connected to the drive motor 1, and the screw nut assembly 2 is used to drive the slider 41 to move. Specifically, the screw nut assembly 2 includes a ball screw 21 and a nut 22, the nut 22 is connected to the track plate 3, the ball screw 21 is connected to the drive motor 1, and the output shaft of the drive motor 1 drives the ball screw 21 to rotate, specifically through the gear assembly of the transmission box 9, and the nut 22 cannot rotate, that is, the nut 22 cannot rotate with the ball screw 21. When the ball screw 21 rotates, the nut 22 can only move along the axial direction of the ball screw 21, thereby converting the rotation of the drive motor 1 into a linear movement of the nut 22, and then into a linear movement of the slider 41 along the slide rail 42. Figure 6In the embodiment, the nut 22 and the slider 41 are fixed, and the nut 22 cannot rotate. The screw nut assembly 2 has a relatively stable transmission performance and can achieve the transmission of a large torque. Of course, the drive motor 1 is not limited to transmitting to the slider 41 through the screw nut assembly 2, and can also be other transmission assemblies, such as a gear rack assembly.

[0041] like Figure 1 As shown, it also includes a frame 6, and the lifting drive component 200 is arranged on the frame 6, which can provide an installation space for the lifting drive component 200. The frame 6 is provided with a guide shaft 7 extending along the third direction, and the guide shaft 7 can be supported on the ground or other platforms. The platform body 101 of the lifting platform 100 is slidably connected to the guide shaft 7, so that the platform body 101 can only be lifted and lowered along the third direction. When the driving member 103 and the inclined groove 3a1 of the platform body 101 move relative to each other, only displacement along the third direction can be generated to achieve lifting. It can be seen that the constraints of the platform body 101 in other directions are not limited to being realized in cooperation with the guide shaft 7. For example, it is also possible to limit its periphery, but it is obvious that the way the guide shaft 7 is limited makes the lifting smoother.

[0042] The lifting platform 100 in this embodiment also includes a linear bearing 5, and a linear bearing 5 is arranged between the platform body 101 and the guide shaft 7. In this way, the platform body 101 and the guide shaft 7 can still only perform lifting and lowering movements along the third direction, and due to the arrangement of the linear bearing 5, the friction force can be reduced and the smoothness of the lifting and lowering movement can be improved.

[0043] like Figure 1 As shown, the platform body 101 of the lifting platform 100 in this embodiment is arranged below the rack 6. The lifting platform 100 is specifically a tightening gun platform of the battery swap station. The vehicle is supported above the rack 6 when replacing the battery, and the battery pack of the vehicle is also located above the rack 6. The platform body 101 of the lifting platform 100 can be provided with a corresponding number of tightening guns. After the tightening guns are raised, the battery packs can be tightened. The platform body 101 is provided with avoidance holes or avoidance grooves to avoid the tightening guns during the lifting process of the tightening guns.

[0044] This embodiment also provides a battery swap station, which is provided with a lifting mechanism as described in any of the above embodiments. The lifting mechanism has the same technical effect as the above lifting mechanism, and will not be described in detail.

[0045] Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A lifting mechanism, characterized in that: The invention comprises two groups of lifting drive components (200) distributed along a first direction, each of the lifting drive components (200) comprising a driving motor (1), two groups of sliding components (4) driven by the driving motor (1), and a track plate (3); the two groups of sliding components (4) are arranged along a second direction, the second direction being perpendicular to the first direction; the sliding components (4) comprising a slider (41) and a slide rail (42), the driving motor (1) simultaneously driving the two sliders (41) to move along the corresponding slide rail (42); the track plate (3) is connected to the slider (41), the track plate (3) is provided with a groove structure (3a), and the groove structure (3a) comprises an inclined groove (3a1); The lifting mechanism also includes a lifting platform (100), and the lifting platform (100) includes a platform body (101) and a driving member (103) fixed relatively to the platform body (101), the driving member (103) is inserted into the groove structure (3a), the track plate (3) moves along the second direction, and the driving member (103) and the inclined groove (3a1) move relative to each other to drive the lifting platform (100) to move up and down along a third direction, and the third direction is perpendicular to the first direction and the second direction.

2. The lifting mechanism according to claim 1, characterized in that: The lifting drive component (200) comprises a screw nut assembly (2), wherein the screw nut assembly (2) comprises a ball screw (21) and a nut (22), wherein the ball screw (21) is connected to the drive motor (1), and the nut (22) is connected to the slider (41).

3. The lifting mechanism according to claim 1, characterized in that: The groove structure (3a) comprises a transverse groove, both ends of the inclined groove (3a1) are connected to the transverse groove, and the transverse groove extends along the second direction.

4. The lifting mechanism according to any one of claims 1 to 3, characterized in that: The driving motor (1) drives the corresponding two track plates (3) to move relatively closer or relatively farther away, and the groove structures (3a) of the two track plates (3) in the lifting driving component (200) are symmetrically arranged relative to the driving motor (1).

5. The lifting mechanism according to any one of claims 1 to 3, characterized in that: The driving member (103) comprises a bearing (1032) and a bolt (1031) connected to the bearing (1032); the bearing (1032) is located in the groove structure (3a); and the bolt (1031) is fixedly connected to the platform body (101).

6. The lifting mechanism according to claim 5, characterized in that: The lifting platform (100) further comprises a support (102), wherein the support (102) is fixedly connected to the platform body (101), and the driving member (103) is fixedly connected to the support (102) via the bolt (1031).

7. The lifting mechanism according to any one of claims 1 to 3, characterized in that: It also includes a frame (6), and the lifting drive component (200) is arranged on the frame (6).

8. The lifting mechanism according to claim 7, characterized in that: The frame (6) is provided with a guide shaft (7) extending along the third direction, and the platform body (101) and the guide shaft (7) are slidably connected.

9. The lifting mechanism according to claim 8, characterized in that: The lifting platform (100) further comprises a linear bearing (5), and the linear bearing (5) is arranged between the platform body (101) and the guide shaft (7).

10. A battery swap station, characterized in that: The battery swap station is provided with a lifting mechanism as described in any one of claims 1-9.

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