Battery pack transportation device

Abstract

The utility model provides a battery pack transportation device, which relates to the technical field of automatic transportation of battery packs, and is characterized in that a first driving wheel and a first driven wheel are arranged at two ends of a first main frame, a synchronous belt is used for connecting the first driving wheel and the first driven wheel, and a driving part drives the first driving wheel to rotate; the synchronous belt drives the first driven wheel to rotate synchronously, and due to the fact that the first driving wheel and the first driven wheel are meshed with the synchronous belt, when the first driving wheel and the first driven wheel rotate, the first driving wheel and the first driven wheel move in the extending direction of the synchronous belt relative to the synchronous belt; when the first driving wheel and the first driven wheel move relative to the synchronous belt in the extending direction of the synchronous belt, namely, the first driving wheel and the first driven wheel move in the extending direction of the first cross beam, so that the walking frame moves on the first cross beam in the first direction. The synchronous belt can be assembled without high mounting precision, the reloading efficiency can be improved, meanwhile, the synchronous belt does not need additional lubrication, and cleanliness in the battery replacing station is ensured.

Description

Technical Field

[0001] This utility model relates to the field of automated battery pack transportation technology, and more specifically, to a battery pack transportation device. Background Technology

[0002] With the development of electric vehicles, the electrification trend of heavy-duty trucks is becoming increasingly apparent. The heavy-duty truck battery swapping model, which involves separating the vehicle body from the battery and allowing for rapid battery replacement, provides an effective way to address range anxiety and overcome the challenges of promoting electric heavy-duty trucks.

[0003] Currently, battery pack transportation at heavy-duty truck battery swapping stations primarily relies on rack and pinion transmission mechanisms. This requires high precision in machining and assembly, leading to high costs and increased assembly difficulty. Furthermore, rack and pinion systems require regular lubrication maintenance, and lubricating oil may drip, causing pollution at the work site. Utility Model Content

[0004] The problem this invention addresses is: how to achieve quick replacement of battery pack equipment in battery swapping stations and improve the working environment of battery swapping stations.

[0005] To address the aforementioned problems, this utility model provides a battery pack transport device.

[0006] In a first aspect, this utility model provides a battery pack transport device, comprising:

[0007] Two parallel first crossbeams extend along a first direction;

[0008] The traveling frame includes a first main frame, a first drive wheel, a first driven wheel, and a timing belt. The traveling frame is mounted above the first crossbeam, and the first main frame extends along the first direction and slides in cooperation with the first crossbeam.

[0009] A drive component, connected to the first drive wheel, is used to provide power to the first drive wheel;

[0010] The first drive wheel and the first driven wheel are respectively connected to the two ends of the first main frame. The timing belt is engaged with both the first drive wheel and the first driven wheel. The two ends of the timing belt are respectively fixed to the two ends of the first crossbeam. The drive component drives the first drive wheel to rotate and drives the first driven wheel to rotate synchronously through the timing belt, so that the traveling frame moves along the first direction on the first crossbeam.

[0011] Optionally, the traveling frame further includes a first guide wheel and a second guide wheel; the first guide wheel is located at the end of the first main frame away from the first driven wheel, and the second guide wheel is located at the end of the first main frame away from the first drive wheel; wherein, the first drive wheel is located between the first guide wheel and the first end of the first crossbeam, the first driven wheel is located between the second guide wheel and the second end of the first crossbeam, one end of the synchronous belt is fixed to the first end in sequence via the first drive wheel and the first guide wheel, and the other end of the synchronous belt is fixed to the second end of the first crossbeam in sequence via the first driven wheel and the second guide wheel.

[0012] Optionally, the first guide wheel is located on the side of the first drive wheel facing the first driven wheel, and the vertical distance between the lowest point of the outer peripheral wall of the first drive wheel and the first crossbeam is less than the vertical distance between the highest point of the outer peripheral wall of the first guide wheel and the first crossbeam, so that the synchronous belt between the first drive wheel and the first guide wheel is inclined in a direction away from the first crossbeam.

[0013] Optionally, the diameter of the first guide wheel is larger than the diameter of the first drive wheel.

[0014] Optionally, on a projection plane perpendicular to the axial direction of the first drive wheel, the acute angle between the extension of the line connecting the axis of the first drive wheel and the axis of the first guide wheel and the first crossbeam is 30° to 60°.

[0015] Optionally, the timing belt includes toothed surfaces adapted to mesh with the first drive wheel and the first driven wheel; wherein the toothed surfaces of the timing belt moving between the first drive wheel and the first driven wheel face the first crossbeam.

[0016] Optionally, the battery pack transport device further includes a tightening component, which is disposed at both ends of the first crossbeam and connected to the timing belt for tightening the timing belt.

[0017] Optionally, the timing belt includes a toothed surface for meshing with both the first drive wheel and the first driven wheel; the tightening component includes: an engaging portion including a toothed groove structure corresponding to the toothed surface of the timing belt, the end of the timing belt being located above the engaging portion, and the toothed surface of the timing belt engaging with the toothed groove structure of the engaging portion; a cover portion located at the end of the timing belt and above the engaging portion for fixing the timing belt and the engaging portion; and a tightening bolt, one end of which is connected to the engaging portion, and the other end of which is threaded to the end of the first crossbeam, the tightening bolt being used to tighten the timing belt by screwing.

[0018] Optionally, the first crossbeam is provided with a plurality of first slots corresponding to the tightening component; the cover portion includes: a cover portion covering the end of the timing belt and the engaging portion, the cover portion being provided with a plurality of first through holes, one first through hole corresponding to at least one first slot; and a plurality of pins inserted into the first through holes and the corresponding first slots to fix the end of the timing belt, the cover portion and the engaging portion to the first crossbeam.

[0019] Optionally, the traveling frame further includes at least one of the support rollers disposed on the first main frame; wherein the axial direction of the support roller is parallel to the axial direction of the first drive wheel, and the support roller is disposed below the timing belt between the first drive wheel and the first driven wheel, for supporting the timing belt.

[0020] The beneficial effects of the battery pack transport device of this utility model are as follows: This utility model provides a battery pack transport device, which relates to the field of automated battery pack transport technology. By setting the first drive wheel and the first driven wheel at both ends of the first main frame, and connecting the first drive wheel and the first driven wheel with a synchronous belt, the drive component drives the first drive wheel to rotate, and the synchronous belt drives the first driven wheel to rotate synchronously. Since the first drive wheel and the first driven wheel are engaged with the synchronous belt, when the first drive wheel and the first driven wheel rotate, they will move relative to the synchronous belt along the extension direction of the synchronous belt. Since the two ends of the synchronous belt are fixed to the two ends of the first crossbeam, when the first drive wheel and the first driven wheel move relative to the synchronous belt along the extension direction of the synchronous belt, it is equivalent to moving along the extension direction of the first crossbeam, so that the traveling frame moves along the first direction on the first crossbeam. The assembly of the synchronous belt does not require high installation precision, which can improve the replacement efficiency, shorten the assembly period, and reduce costs. At the same time, the synchronous belt generally does not require additional lubrication, ensuring the cleanliness of the battery swapping station. In addition, the synchronous belt produces less noise during operation, which helps to reduce noise pollution. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the battery pack transport device in an embodiment of this utility model;

[0022] Figure 2 This is a partial three-dimensional structural diagram of the battery pack transport device in an embodiment of the present utility model;

[0023] Figure 3 This is a partial three-dimensional structural diagram of the battery pack transport device in an embodiment of the present invention, viewed from the axial direction of the first drive wheel.

[0024] Figure 4 for Figure 2 A magnified view of a portion of region A in the middle;

[0025] Figure 5 for Figure 2 Another magnified view of region A in the middle.

[0026] Explanation of reference numerals in the attached figures:

[0027] Battery pack transport device 10; first crossbeam 20; first end D1; second end D2; first slot 21; gripping component 30; walking frame 100; first main frame 110; first drive wheel 120; first driven wheel 130; synchronous belt 140; toothed surface S1; first guide wheel 150; second guide wheel 160; support roller 170; second main frame 180; walking structure 190; drive component 200; tightening component 300; engaging part 310; toothed structure 311; sealing part 320; sealing part 321; first through hole 322; pin 323; tightening bolt 330. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0029] In the attached figures, the Z-axis represents the vertical direction, i.e., up and down, with the positive direction of the Z-axis representing up and the negative direction representing down; the X-axis represents the horizontal direction; and the Y-axis represents the horizontal direction. It should be noted that the aforementioned representations of the Z, Y, and X axes are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0031] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0032] In related technologies, with the development of electric vehicles, the electrification trend of heavy-duty trucks is becoming increasingly apparent. The transportation of battery packs in heavy-duty truck battery swapping stations mainly relies on a rack and pinion transmission mechanism. This requires the swapping stations to have high machining and assembly precision, resulting in high costs and increased assembly difficulty. Furthermore, the rack and pinion system requires regular lubrication maintenance, and lubricating oil may drip, causing pollution at the work site.

[0033] To address the problems existing in the aforementioned related technologies, this utility model provides a battery pack transport device 10. By placing a first drive wheel 120 and a first driven wheel 130 at both ends of a first main frame 110, and connecting the first drive wheel 120 and the first driven wheel 130 with a synchronous belt 140, the drive component 200 drives the first drive wheel 120 to rotate, and the synchronous belt 140 drives the first driven wheel 130 to rotate synchronously. Since the first drive wheel and the first driven wheel mesh with the synchronous belt, when the first drive wheel and the first driven wheel rotate, they will move relative to the synchronous belt along the extension direction of the synchronous belt. Since the two ends of the synchronous belt are fixed to the two ends of the first crossbeam, when the first drive wheel and the first driven wheel move relative to the synchronous belt along the extension direction of the synchronous belt, it is equivalent to moving along the extension direction of the first crossbeam, so that the traveling frame 100 moves along the first direction on the first crossbeam 20. Assembling the synchronous belt 140 does not require high installation precision, which can improve installation efficiency, shorten the assembly period, and reduce costs. At the same time, the synchronous belt 140 generally does not require additional lubrication, ensuring cleanliness and tidiness within the battery swapping station. Furthermore, the synchronous belt 140 produces relatively little noise during operation, helping to reduce noise pollution. The following detailed description is based on specific embodiments.

[0034] Combination Figures 1 to 5As shown in the figure, a battery pack transport device 10 provided in this embodiment of the present invention includes two parallel first crossbeams 20, a traveling frame 100, and a drive component 200. The first crossbeams 20 extend along a first direction. The traveling frame 100 includes a first main frame 110, a first drive wheel 120, a first driven wheel 130, and a synchronous belt 140. The traveling frame 100 is located above the first crossbeams 20. The first main frame 110 extends along the first direction and slides in cooperation with the first crossbeams 20. The drive component 200 is connected to the first drive wheel 120. The drive component 200 is used to provide power to the first drive wheel 120. The first drive wheel 120 and the first driven wheel 130 are respectively connected to the two ends of the first main frame 110. The timing belt 140 is engaged with both the first drive wheel 120 and the first driven wheel 130. The two ends of the timing belt 140 are respectively fixed to the two ends of the first crossbeam 20. The drive component 200 drives the first drive wheel 120 to rotate and drives the first driven wheel 130 to rotate synchronously through the timing belt 140, so that the walking frame 100 moves along the first direction on the first crossbeam 20.

[0035] Understandably, please refer to the details. Figure 1 , Figure 2 The number of first main frames 110 can be two, the number of first drive wheels 120 can be two, the number of first driven wheels 130 can be two, and the number of synchronous belts 140 can be two; wherein, one first main frame 110, one first drive wheel 120, one first driven wheel 130 and one synchronous belt 140 corresponds to one first crossbeam 20, and another first main frame 110, another first drive wheel 120, another first driven wheel 130 and another synchronous belt 140 corresponds to another first crossbeam 20.

[0036] For details, please refer to [link / reference]. Figures 3 to 5 The synchronous belt 140 includes a toothed surface S1 with uniformly distributed toothed structures. The outer peripheral walls of both the first drive wheel 120 and the first driven wheel 130 are provided with toothed grooves that match the toothed structure of the synchronous belt 140, so that the synchronous belt 140 meshes with the first drive wheel 120 and the first driven wheel 130. The first direction in the figure can be considered as the extension direction of the Y-axis.

[0037] The teeth of the synchronous belt 140 mesh tightly with the tooth grooves of the first drive wheel 120 and the first driven wheel 130, transmitting torque through the interlocking of the teeth and driving the first driven wheel 130 to rotate synchronously. Since the first drive wheel 120 and the first driven wheel 130 mesh with the synchronous belt 140, when the first drive wheel 120 and the first driven wheel 130 rotate, they will move relative to the synchronous belt 140 along the extending direction of the synchronous belt 140. Because the two ends of the synchronous belt 140 are fixed to the two ends of the first crossbeam 20, when the first drive wheel 120 and the first driven wheel 130 move relative to the synchronous belt 140 along the extending direction of the synchronous belt 140, it is equivalent to moving along the extending direction of the first crossbeam 20, thereby achieving the overall rotation of the synchronous belt 140. The traveling frame 100 moves along the first direction on the first crossbeam 20. The synchronous belt 140 is generally a flexible belt. The connection through the flexible belt avoids the impact of direct meshing of rigid gears. At the same time, it is not easy to slip during transmission, the transmission ratio is accurate, the installation efficiency is improved, the assembly period is shortened, and the cost is reduced. Compared with gear and rack transmission, the synchronous belt 140 generally does not require additional lubrication, reducing maintenance costs and ensuring the cleanliness of the battery swapping station. In addition, compared with gear and rack transmission, the flexible belt of the synchronous belt 140 has flexible buffering characteristics, which produces less noise during operation and helps to reduce noise pollution. Furthermore, the synchronous belt 140 has a faster speed response, shortens the battery swapping time, and improves the battery swapping efficiency.

[0038] Specifically, the position of the drive component 200 can be set according to the actual situation. For example, the drive component 200 can be set on the beam of the walking frame 100. This is just an example and is not a specific limitation.

[0039] Specifically, the synchronous belt 140 is typically made of materials such as rubber or polyurethane, and may have embedded tensile elements such as steel wire rope or fiberglass to ensure strength and accuracy during transmission. The first drive wheel 120 and the first driven wheel 130 are mostly made of aluminum alloy, steel, or engineering plastics, and their surfaces may be treated (such as oxidation or quenching) to improve wear resistance. This is only an example and not a specific limitation.

[0040] In some embodiments, please refer to the following for details. Figure 3The traveling frame 100 further includes a first guide wheel 150 and a second guide wheel 160; the first guide wheel 150 is located at the end of the first main frame 110 away from the first driven wheel 130, and the second guide wheel 160 is located at the end of the first main frame 110 away from the first drive wheel 120; wherein, the first drive wheel 120 is located between the first guide wheel 150 and the first end D1 of the first crossbeam 20, the first driven wheel 130 is located between the second guide wheel 160 and the second end D2 of the first crossbeam 20, one end of the synchronous belt 140 is fixed to the first end D1 of the first crossbeam 20 in sequence via the first drive wheel 120 and the first guide wheel 150, and the other end of the synchronous belt 140 is fixed to the second end D2 of the first crossbeam 20 in sequence via the first driven wheel 130 and the second guide wheel 160.

[0041] Understandably, please refer to the details. Figures 1 to 3 The number of first guide wheels 150 can be two, and the number of second guide wheels 160 can be two; wherein one first guide wheel 150 and one second guide wheel 160 correspond to one first crossbeam 20, and another first guide wheel 150 and another second guide wheel 160 correspond to another first crossbeam 20. The main function of the first guide wheel 150 and the second guide wheel 160 is to provide guidance, and their outer peripheral walls may not have grooves and are smooth.

[0042] Sufficient tension ensures that the synchronous belt 140 fits tightly against the tooth grooves of the first drive pulley 120 and the first driven pulley 130, guaranteeing a good meshing state. The first guide pulley 150 and the second guide pulley 160 can change the running direction of the synchronous belt 140 and increase its tension. By changing the direction of the synchronous belt 140, the first guide pulley 150 and the second guide pulley 160 generate additional positive pressure when the synchronous belt 140 passes over the first guide pulley 150 and the second guide pulley 160, which is then converted into tension. This effectively improves the stability, transmission accuracy, and working efficiency of the synchronous belt 140 transmission system.

[0043] In some embodiments, please refer to the following for details. Figure 3 The first guide wheel 150 is located on the side of the first drive wheel 120 facing the first driven wheel 130, and the vertical distance between the lowest point of the outer peripheral wall of the first drive wheel 120 and the first crossbeam 20 is less than the vertical distance between the highest point of the outer peripheral wall of the first guide wheel 150 and the first crossbeam 20, so that the synchronous belt 140 between the first drive wheel 120 and the first guide wheel 150 is inclined in a direction away from the first crossbeam 20.

[0044] The first drive wheel 120, the first driven wheel 130, the first guide wheel 150, and the second guide wheel 160 are all located above the first crossbeam 20. The middle part of the synchronous belt 140 is located above the first drive wheel 120 and the first driven wheel 130. The two ends of the belt pass around the first drive wheel 120 and the first driven wheel 130 respectively, change direction, and reach the first guide wheel 150 and the second guide wheel 160. Then, the two ends of the belt pass around the first guide wheel 150 and the second guide wheel 160 respectively and change direction to connect to the two ends of the first crossbeam 20.

[0045] The first drive wheel 120 serves as the drive wheel, and the tension of the synchronous belt 140 near it is the direct carrier of power transmission. Designing the synchronous belt 140 between the first drive wheel 120 and the first guide wheel 150 to be inclined upwards is beneficial to improving the tension of the synchronous belt 140 near the drive wheel, enhancing torque transmission and anti-slip capability, ensuring meshing synchronization and motion stability, and improving the transportation efficiency of the battery pack transport device 10.

[0046] In some embodiments, please refer to the following for details. Figure 3 The diameter of the first guide wheel 150 is larger than the diameter of the first drive wheel 120. On the one hand, the position of the first guide wheel 150 can be designed more easily. Even if the axis of the first guide wheel 150 is lower than the axis of the first drive wheel 120, the distance between the lowest point of the outer peripheral wall of the first drive wheel 120 and the first crossbeam 20 can be smaller than the distance between the highest point of the outer peripheral wall of the first guide wheel 150 and the first crossbeam 20. This is beneficial to improving the tension of the synchronous belt 140 near the drive wheel, enhancing torque transmission and anti-slip capability. On the other hand, the larger diameter of the first guide wheel 150 is beneficial to increasing the wrap angle of the synchronous belt 140 on the first drive wheel 120. This wrap angle is the central angle corresponding to the contact arc length of the synchronous belt 140 on the first drive wheel 120. This wrap angle affects the transmission friction. When the diameter of the first guide wheel 150 is larger than the diameter of the first drive wheel 120, the winding path of the synchronous belt 140 on the first drive wheel 120 is "spread out," and the wrap angle can be significantly increased, increasing the tension. For the same coefficient of friction, the transmission friction increases, thereby improving the anti-slip capability of the synchronous belt 140 transmission and improving transmission stability.

[0047] Specifically, the acute angle between the timing belt 140 and the first crossbeam 20 between the first drive wheel 120 and the first guide wheel 150 is less than 20°. The upward tilt angle of the timing belt 140 between the first drive wheel 120 and the first guide wheel 150 should not be too large. A suitable tilt angle helps to reduce the bending stress of the timing belt 140 and delay the fatigue failure of the timing belt 140.

[0048] In some embodiments, please refer to the following for details. Figure 3 On the projection plane perpendicular to the axial direction of the first drive wheel 120, the acute angle θ between the extension of the line connecting the axis of the first drive wheel 120 and the axis of the first guide wheel 150 and the first crossbeam 20 is 30° to 60°.

[0049] The reasonable setting of the angle θ between the line connecting the first guide wheel 150 and the first drive wheel 120 (the line connecting the center distances) and the horizontal line is beneficial to controlling the wrap angle and tension of the synchronous belt 140 on the drive wheel, thereby improving the transmission capacity; it is also beneficial to reduce the bending stress of the synchronous belt 140 and delay the fatigue failure of the synchronous belt 140.

[0050] In some embodiments, please refer to the following for details. Figure 3 The timing belt 140 includes a tooth surface S1 adapted to mesh with the first drive wheel 120 and the first driven wheel 130; wherein the tooth surface S1 of the timing belt 140, which moves between the first drive wheel 120 and the first driven wheel 130, faces the first crossbeam 20.

[0051] It is understood that the middle part of the synchronous belt 140 is located above the first drive wheel 120 and the first driven wheel 130. One end of the synchronous belt 140 passes around the first drive wheel 120, changes direction, and reaches the first guide wheel 150. Then it passes around the first guide wheel 150 and changes direction to connect to the first end D1 of the first crossbeam 20. The tooth surface S1 of the synchronous belt 140, which moves between the first guide wheel 150 and the first end D1, faces the first crossbeam 20. The other end of the synchronous belt 140 passes around the first driven wheel 130, changes direction, and reaches the second guide wheel 160. Then it passes around the second guide wheel 160 and changes direction to connect to the second end D2 of the first crossbeam 20. The tooth surface S1 of the synchronous belt 140, which moves between the second guide wheel 160 and the second end D2, faces the first crossbeam 20.

[0052] In practical applications, the synchronous belt 140 transmission system often faces interference from dust and other impurities. Once dust enters the tooth structure of the synchronous belt 140, it easily leads to poor meshing, accelerated wear, and consequently seriously affects transmission efficiency and the service life of the synchronous belt 140. It is understood that the tooth surface S1 of the synchronous belt 140 faces the first crossbeam 20, that is, the tooth surface S1 of the synchronous belt 140 is set downwards. This downward-facing design of the tooth surface S1 can, to a certain extent, prevent dust from falling directly into the tooth structure from top to bottom, reducing the probability of dust entering the tooth structure and interfering with the normal meshing of the synchronous belt 140 and the pulley. This better ensures the stable operation of the synchronous belt 140 transmission system in dusty environments and improves the operational stability of the battery pack transport device 10.

[0053] In some embodiments, please refer to the following for details. Figures 2 to 5 The battery pack transport device 10 also includes a tightening component 300, which is respectively disposed at both ends of the first crossbeam 20 and connected to the synchronous belt 140 for tightening the synchronous belt 140.

[0054] During operation, the synchronous belt 140 may become loose due to factors such as vibration and component fatigue. The tightening component 300 can tighten the synchronous belt 140, which helps to maintain a suitable tension in the synchronous belt 140 and ensures that the walking frame 100 has stable transmission efficiency.

[0055] In some embodiments, please refer to the following for details. Figure 4 , Figure 5 The synchronous belt 140 includes a toothed surface S1 for meshing with both the first drive wheel 120 and the first driven wheel 130. The tightening component 300 includes an engaging portion 310, a cover portion 320, and a tightening bolt 330. The engaging portion 310 includes a toothed groove structure 311 corresponding to the toothed surface S1 of the synchronous belt 140. The end of the synchronous belt 140 is located above the engaging portion 310. The toothed surface S1 of the synchronous belt 140 meshes with the toothed surface S1 of the synchronous belt 140. The toothed structure 311 of the engaging part 310 engages and cooperates; the cover part 320 is provided at the end of the synchronous belt 140 and above the engaging part 310, for fixing the synchronous belt 140 and the engaging part 310; one end of the tightening bolt 330 is connected to the engaging part 310, and the other end of the tightening bolt 330 is threaded to the end of the first crossbeam 20, and the tightening bolt 330 is used to tighten the synchronous belt by screwing.

[0056] For ease of understanding, Figure 4 , Figure 5 The synchronization belt 140 in the diagram is only partially shown for representation, especially in... Figure 5In the exploded view of some components, the positional relationship and length of the timing belt 140 are only for illustration. The full view of the timing belt 140 can be referred to other accompanying drawings. The first crossbeam 20 includes a first guide rail and a fixing part. The fixing part is located at both ends of the first guide rail. The first main frame 110 and the first guide rail can be slidably engaged by a pulley system. The fixing part is located on the side of the corresponding tightening component 300 away from the center of the first guide rail. The fixing part includes a threaded hole. The extension direction of the threaded hole is parallel to the extension direction of the first guide rail. The threaded hole includes an internal thread pattern. The end of the tightening bolt 330 includes an external thread pattern corresponding to the internal thread pattern of the threaded hole. The tightening bolt 330 passes through the threaded hole and is threadedly connected to the threaded hole. After passing through the threaded hole, the tightening bolt 330 is connected to the engaging part 310. The connection method between the tightening bolt 330 and the engaging part 310 can be a threaded connection, a snap-fit ​​connection, or other detachable connection, which is not specifically limited here.

[0057] The engaging part 310 and the timing belt 140 are engaged and fixed by the toothed structure 311, and the engaging part 310 and the timing belt 140 are fixed by the cover part 320, thereby achieving relative fixation of the cover part 320, the engaging part 310 and the timing belt 140. The tightening bolt 330 is connected to the engaging part 310 to prevent the engaging part 310 from moving towards the center of the first crossbeam 20, thereby preventing the end of the timing belt 140 from moving towards the center of the first crossbeam 20. By tightening the tightening bolt 330, the tightening bolt 330 can move axially along the threaded hole of the fixing part, thereby achieving the tensioning effect of the timing belt 140. This helps to improve the tension of the timing belt 140, enhance torque transmission and anti-slip ability, ensure the meshing synchronization between the timing belt 140 and the first drive wheel 120 and the first driven wheel 130, improve the movement stability of the walking frame 100, and improve the transportation efficiency of the battery pack transportation device 10.

[0058] In some embodiments, the first crossbeam 20 further includes a first limiting portion disposed at both ends of the first guide rail, the extending direction of the first limiting portion being perpendicular to the extending direction of the first guide rail; the traveling frame 100 further includes a second limiting portion disposed at both ends of the first main frame 110, the extending direction of the second limiting portion being parallel to the extending direction of the first guide rail. When the traveling frame 100 moves, the second limiting portion is used to abut against the first limiting portion to limit movement; for example, when the traveling frame 100 moves toward the first end D1 of the first crossbeam 20, before the first drive wheel 120 reaches the first end D1, the second limiting portion abuts against the first limiting portion of the first end D1 to prevent the traveling frame 100 from moving beyond the first end D1; similarly, when the traveling frame 100 moves toward the second end D2 of the first crossbeam 20, before the first driven wheel 130 reaches the second end D2, the second limiting portion abuts against the first limiting portion of the second end D2 to prevent the traveling frame 100 from moving beyond the second end D2.

[0059] In some embodiments, please refer to the following for details. Figure 4 , Figure 5 The first crossbeam 20 is provided with a plurality of first slots 21 corresponding to the tightening component 300; the cover part 320 includes a cover part 321 and a plurality of pins 323: the cover part 321 covers the end of the timing belt 140 and the engaging part 310, the cover part 321 is provided with a plurality of first through holes 322, one first through hole 322 corresponds to at least one first slot 21; the pins 323 are inserted into the first through holes 322 and the corresponding first slots 21 to fix the end of the timing belt 140, the cover part 321 and the engaging part 310 to the first crossbeam 20.

[0060] The locking engagement of pin 323 with the first slot 21 and the first through hole 322 facilitates the stable fixation of the end of the synchronous belt 140, the capping part 321, and the engaging part 310 at the end of the first crossbeam 20, thus ensuring the tension of the synchronous belt 140. When it is necessary to adjust the tension of the synchronous belt 140, pin 323 can be removed, and the tension of the synchronous belt 140 can be adjusted by tightening the tightening bolt 330, and then pin 323 can be used again. It should be noted that since the positional correspondence between the first through hole 322 and the first slot 21 may change before and after the synchronous belt 140 is adjusted, pin 323 should be inserted into the adjusted and aligned first through hole 322 and first slot 21.

[0061] In some embodiments, please refer to the following for details. Figures 3 to 5The walking frame 100 further includes at least one of the support rollers 170 disposed on the first main frame 110; wherein the axial direction of the support roller 170 is parallel to the axial direction of the first drive wheel 120, and the support roller 170 is disposed below the synchronous belt 140 between the first drive wheel 120 and the first driven wheel 130, for supporting the synchronous belt 140.

[0062] The length of the timing belt 140 between the first drive wheel 120 and the first driven wheel 130 may be too long. If the tension of the timing belt 140 is insufficient, there is a risk that the timing belt 140 will touch the first main frame 110. By setting the support roller 170 to support the timing belt 140, the risk of the timing belt 140 touching the first main frame 110 is reduced, the movement stability of the walking frame 100 is improved, and the transportation efficiency of the battery pack transport device 10 is improved.

[0063] In some embodiments, please refer to the following for details. Figure 1 , Figure 2 The traveling frame 100 further includes a second main frame 180. The extension direction of the second main frame 180 is a second direction, which is perpendicular to the first direction. The extension direction of the second main frame 180 is perpendicular to the extension direction of the first main frame 110. It can be understood that the second direction is denoted as the extension direction of the X-axis. The second main frame 180 connects the two first main frames 110 together, making the traveling frame 100 a single unit.

[0064] In some embodiments, please refer to the following for details. Figure 1 The battery pack transport device 10 further includes a gripping component 30 for gripping the battery pack. The gripping component is connected to a traveling frame 100 and can move along a first direction via the traveling frame 100. The battery pack transport device 10 also includes a traveling structure 190, which is slidably connected to the traveling frame 100. The traveling structure 190 can move relative to the traveling frame 100 along a second direction. The traveling structure 190 can be connected to the second main frame 180 via a gear and rack to realize the movement of the traveling structure 190. The gripping component 30 is connected to the traveling structure 190 to enable the gripping component 30 to move in the second direction, realizing multi-axis movement of the gripping component 30. The traveling structure 190 can be moved manually or connected to a drive component 200. The drive component 200 provides driving force to move the traveling structure 190. The movement of the traveling structure 190 is not the core solution of this application and will not be described in detail here.

[0065] It is understood that the second main frame 180 is connected to the first main frame 110, and when the walking main frame moves along the first direction, it can also drive the gripping component 30 to move in the first direction.

[0066] Specifically, the gripping component 30 can move in the vertical direction, that is, it can move up and down along the extension direction of the Z-axis. It is understood that this effect can be achieved through designs such as telescopic structures. The fact that the gripping component 30 can move in the vertical direction is not the core solution of this application, and will not be elaborated here.

[0067] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A battery pack transport device, characterized in that, include: Two parallel first crossbeams (20) are arranged to extend along a first direction; The traveling frame (100) includes a first main frame (110), a first drive wheel (120), a first driven wheel (130), and a timing belt (140). The traveling frame (100) is located above the first crossbeam (20). The first main frame (110) extends along the first direction and slides in cooperation with the first crossbeam (20). A drive component (200) is connected to the first drive wheel (120) and is used to provide power to the first drive wheel (120); The first drive wheel (120) and the first driven wheel (130) are respectively connected to the two ends of the first main frame (110). The synchronous belt (140) is engaged with both the first drive wheel (120) and the first driven wheel (130). The two ends of the synchronous belt (140) are respectively fixed to the two ends of the first crossbeam (20). The drive component (200) drives the first drive wheel (120) to rotate and drives the first driven wheel (130) to rotate synchronously through the synchronous belt (140), so that the walking frame (100) moves along the first direction on the first crossbeam (20).

2. The battery pack transport device according to claim 1, characterized in that, The walking frame (100) also includes a first guide wheel (150) and a second guide wheel (160). The first guide wheel (150) is located at the end of the first main frame (110) away from the first driven wheel (130), and the second guide wheel (160) is located at the end of the first main frame (110) away from the first drive wheel (120); The first drive wheel (120) is located between the first guide wheel (150) and the first end (D1) of the first crossbeam (20), the first driven wheel (130) is located between the second guide wheel (160) and the second end (D2) of the first crossbeam (20), one end of the synchronous belt (140) is fixed to the first end (D1) in sequence via the first drive wheel (120) and the first guide wheel (150), and the other end of the synchronous belt (140) is fixed to the second end (D2) in sequence via the first driven wheel (130) and the second guide wheel (160).

3. The battery pack transport device according to claim 2, characterized in that, The first guide wheel (150) is located on the side of the first drive wheel (120) facing the first driven wheel (130), and the vertical distance between the lowest point of the outer peripheral wall of the first drive wheel (120) and the first crossbeam (20) is less than the vertical distance between the highest point of the outer peripheral wall of the first guide wheel (150) and the first crossbeam (20), so that the synchronous belt (140) between the first drive wheel (120) and the first guide wheel (150) is inclined in a direction away from the first crossbeam (20).

4. The battery pack transport device according to claim 3, characterized in that, The diameter of the first guide wheel (150) is larger than the diameter of the first drive wheel (120).

5. The battery pack transport device according to claim 3, characterized in that, On the projection plane perpendicular to the axial direction of the first drive wheel (120), the acute angle between the extension of the line connecting the axis of the first drive wheel (120) and the axis of the first guide wheel (150) and the first crossbeam (20) is 30° to 60°.

6. The battery pack transport device according to claim 2, characterized in that, The synchronous belt (140) includes toothed surfaces (S1) that are adapted to mesh with the first drive wheel (120) and the first driven wheel (130). The tooth surface (S1) of the timing belt (140) moving between the first drive wheel (120) and the first driven wheel (130) faces the first crossbeam (20).

7. The battery pack transport device according to claim 1, characterized in that, It also includes a tightening component (300), which is respectively disposed at both ends of the first crossbeam (20) and connected to the synchronous belt (140) for tightening the synchronous belt (140).

8. The battery pack transport device according to claim 7, characterized in that, The synchronous belt (140) includes toothed surfaces (S1) for meshing with both the first drive wheel (120) and the first driven wheel (130); The tightening component (300) includes: The engaging portion (310) includes a tooth groove structure (311) corresponding to the tooth surface (S1) of the timing belt (140), the end of the timing belt (140) is located above the engaging portion (310), and the tooth surface (S1) of the timing belt (140) engages with the tooth groove structure (311) of the engaging portion (310). A cover (320) is provided at the end of the synchronous belt (140) and above the engaging part (310) for fixing the synchronous belt (140) and the engaging part (310). A tightening bolt (330) is provided, one end of which is connected to the engaging part (310), and the other end of which is threaded to the end of the first crossbeam (20). The tightening bolt (330) is used to tighten the timing belt (140) by a screwing operation.

9. The battery pack transport device according to claim 8, characterized in that, The first crossbeam (20) is provided with a plurality of first slots (21) corresponding to the tightening component (300); The capping portion (320) includes: The cover portion (321) covers the end of the timing belt (140) and the engaging portion (310). The cover portion (321) is provided with a plurality of first through holes (322), and one first through hole (322) corresponds to at least one first slot (21). Multiple pins (323) are inserted into the first through hole (322) and the corresponding first slot (21) to fix the end of the synchronous belt (140), the cover part (321) and the engaging part (310) to the first crossbeam (20).

10. The battery pack transport device according to claim 1, characterized in that, The walking frame (100) also includes at least one support roller (170) disposed on the first main frame (110). The axial direction of the support roller (170) is parallel to the axial direction of the first drive wheel (120). The support roller (170) is located below the synchronous belt (140) between the first drive wheel (120) and the first driven wheel (130) to support the synchronous belt (140).

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