Traction device and PACK battery production system

Abstract

The utility model provides a traction device and a PACK battery production system. The traction device comprises two traction mechanisms; the traction mechanism comprises a rack, a movable frame, a lock catch head and a lock catch matching head, the rack extends in the first direction, the movable frame is movably arranged on the rack in the first direction, the lock catch head is arranged on the movable frame and can move in the second direction, the second direction is perpendicular to the first direction, and the lock catch matching head can be connected and locked with the lock catch head; the two lock catch matching heads are arranged on the two sides of the transfer trolley respectively, the two racks are arranged side by side, a channel allowing the transfer trolley to pass through is formed between the two racks, and a traction position is arranged at one end of the channel. When the transfer trolley and the movable frame are both located at the traction position, the lock catch head moves in the second direction to be close to the lock catch matching head and is connected and locked with the lock catch matching head; during unlocking, the lock catch head is away from the lock catch matching head in the second direction and is separated from the lock catch matching head in an unlocking mode. According to the traction device, the transfer trolley can be rapidly dragged, and the equipment takt efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the field of new energy battery production technology, and more specifically, relates to a traction device and a PACK battery production system. Background Art

[0002] In the new energy vehicle PACK battery production line, the transfer vehicle is towed by AGV to each process for processing and assembly. The AGV has a slow pulling speed for the transfer vehicle, and it takes a long time to enter the equipment in each process, affecting the equipment's cycle efficiency. Utility Model Content

[0003] An embodiment of the present application provides a traction device that can quickly tow a transfer vehicle and improve the equipment's cycle efficiency.

[0004] The technical solution adopted in the embodiment of the present application is: providing a traction device for towing a transfer vehicle, wherein the traction device includes two traction mechanisms;

[0005] The traction mechanism includes a frame, a movable frame, a locking head and a locking mating head, wherein the frame extends along a first direction, the movable frame is movably arranged on the frame along the first direction, the locking head is arranged on the movable frame and can move along a second direction, the second direction being perpendicular to the first direction, and the locking mating head can be connected and locked with the locking head;

[0006] The two locking fitting heads are respectively arranged on both sides of the transfer vehicle, the two frames are arranged side by side and a passage is formed between the two frames for the transfer vehicle to pass through, and a traction position is provided at one end of the passage;

[0007] When the transfer vehicle and the mobile frame are both located at the traction position, the locking head moves along the second direction to approach the locking mating head and is connected and locked with the locking mating head;

[0008] When unlocking, the locking head moves away from the locking fitting head along the second direction and is unlocked and separated from the locking fitting head.

[0009] Furthermore, the lock fitting head includes a connecting seat and a lock column, the connecting seat includes a fixing portion connected to one side of the transfer vehicle and a protrusion protruding from the fixing portion along the second direction, the lock column is provided on the protrusion, and the axis of the lock column is perpendicular to the first direction and the second direction;

[0010] The lock head includes a lock body, a lock tongue, and an elastic member. The lock body is provided on the movable frame and can move along the second direction. The lock tongue is rotatably provided on the movable frame, and the rotation axis of the lock tongue is parallel to the axis of the lock column. The lock tongue is provided with a recessed bayonet and the direction of the bayonet can be changed as the lock tongue rotates. The elastic member is provided between the lock body and the lock tongue. The elastic member continuously pushes against the lock tongue to rotate the lock tongue to an unlocked position. When in the unlocked position, the bayonet faces the second direction.

[0011] When the lock column enters the bayonet and pushes the lock tongue to rotate to the locking position, when in the locking position, the bayonet is oriented from one end of the channel where the traction position is provided to the other end of the channel.

[0012] Furthermore, the locking head further comprises:

[0013] a first limiting structure, the first limiting structure being provided on the lock body and located on one side of the lock tongue along the first direction, and when the lock tongue is pushed by the elastic member and rotates to abut against the first limiting structure, the lock tongue is in the unlocked position;

[0014] The second limiting structure is provided on the lock body and is located on the side of the lock tongue away from the lock column. When the lock tongue is pushed by the lock column and rotated to abut the second limiting structure, the lock tongue is in the locked position.

[0015] Furthermore, the lock body is integrally connected to the second limiting structure, one end of the elastic member abuts against the second limiting structure, and the other end abuts against the lock tongue.

[0016] Furthermore, the lock head also includes a pin shaft, which is passed through the lock body, the axis of the pin shaft is parallel to the axis of the lock column, and the lock tongue is provided with an axial hole, and the lock tongue is mounted on the pin shaft through the axial hole and rotates.

[0017] Furthermore, a accommodating cavity is provided on a side of the lock body facing the channel, and the lock tongue is located in the accommodating cavity. The lock body is also provided with an avoidance groove for the lock column to enter to push against the lock tongue, the notch of the avoidance groove faces the second direction, and the avoidance groove passes through the lock body in a direction parallel to the lock column.

[0018] Furthermore, the locking cylinder is rotatably connected to the protrusion.

[0019] Furthermore, the traction mechanism further includes a first driving assembly, and the first driving assembly is used to drive the movable frame to move along the first direction.

[0020] Further, the traction mechanism further comprises a second driving assembly for driving the lock head to move in the second direction.

[0021] The embodiment of the present application further provides a PACK battery production system comprising the traction device.

[0022] The traction device provided by the embodiment of the present application has the beneficial effects that two traction mechanisms are arranged in the traction device, and a channel for the transfer trolley to pass through is formed between the racks of the two traction mechanisms. The racks are both provided with a moving frame movable in a first direction, and the moving frame is provided with a lock head movable in a second direction. The second direction is perpendicular to the first direction, and the transfer trolley is provided with a lock matching head on both sides. When the transfer trolley is pulled into the traction position in the channel by the AGV, the AGV stops pulling. When the moving frame is also moved to the traction position in the first direction, the lock head moves to the lock matching head on both sides of the transfer trolley in the second direction and is locked and connected with the lock matching head. After being locked, the two moving frames move to the other end of the channel in the first direction, and then the transfer trolley is driven by the connection of the lock head and the lock matching head, so that the transfer trolley is pulled to the target position along the channel. After the transfer trolley reaches the target position, the lock head moves away from the lock matching head in the second direction, and the unlocking and separation are completed. Then, the components can be reset or prepared for the next traction. In the embodiment of the present application, the moving frame is used to drive the transfer trolley, and the moving frame moves in the first direction. Compared with the AGV traction, the traction is more stable, the traction speed can be faster, the time spent in entering the equipment is shorter, and the efficiency of the equipment beat can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 A perspective structural schematic view of the traction device provided by the embodiment of the present application is shown in the figure.

[0025] Figure 2 A perspective structural schematic view of the traction device provided by the embodiment of the present application is shown in the figure. Figure 1 An enlarged view of position A in the figure.

[0026] Figure 3 A structural schematic view of the traction mechanism provided by the embodiment of the present application is shown in the figure.

[0027] Figure 4 A structural schematic view of the lock matching head provided by the embodiment of the present application is shown in the figure.

[0028] Figure 5A schematic view of the lock head and the lock fitting head provided by the embodiment of the present application when being unlocked;

[0029] Figure 6 A schematic view of the lock head and the lock fitting head provided by the embodiment of the present application when being locked.

[0030] In the drawings, various reference signs refer to the following items:

[0031] 1, traction mechanism; 11, rack; 12, moving frame; 13, lock head; 131, lock body; 1311, accommodating cavity; 1322, avoiding groove; 132, lock tongue; 1321, bayonet; 1322, shaft hole; 133, elastic piece; 134, first limiting structure; 135, second limiting structure; 136, pin shaft; 14, lock fitting head; 141, connecting seat; 1411, fixed part; 1412, convex part; 142, lock column; 15, first driving assembly; 151, servo motor; 152, rack; 16, second driving assembly;

[0032] 2, transfer trolley;

[0033] 3, passage; 31, traction position.

[0034] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0035] In order to make the technical problems to be solved by the present application, the technical solutions and the beneficial effects clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0037] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0039] See also Figure 1 , the traction device provided in the embodiment of the present application is now described.

[0040] The traction device provided in the embodiment of the present application is used to tow a transfer vehicle 2. The transfer vehicle 2, also known as a pack cart, is used to transport battery modules or battery packs (PACKs) during the battery module production process. For example, it can transfer battery PACKs between different production stations for assembly, testing, and other operations.

[0041] The transfer vehicle 2 can have a square tube frame structure to ensure overall stability and strength. The transfer vehicle 2 is provided with casters at the bottom for easy movement. Some of the trolleys also have an AGV (automatic guided vehicle) traction structure below to achieve automated transportation.

[0042] Reference Figure 1 The traction device includes two traction mechanisms 1. The traction device is used to tow the transfer vehicle 2. The two traction mechanisms 1 cooperate with each other to achieve effective traction operation of the transfer vehicle 2, ensuring that the transfer vehicle 2 can be smoothly moved from one position to another in the production process.

[0043] Reference Figure 1 、 Figure 2 and Figure 3 The traction mechanism 1 includes a frame 11, a movable frame 12, a locking head 13 and a locking mating head 14. The frame 11 extends along a first direction X, the movable frame 12 is movably provided on the frame 11 along the first direction X, the locking head 13 is provided on the movable frame 12 and can be moved along a second direction Y, the second direction Y is perpendicular to the first direction X, and the locking mating head 14 can be connected and locked with the locking head 13.

[0044] Each traction mechanism 1 includes a frame 11 extending along a first direction X, providing a stable support framework for the entire traction mechanism 1. Frame 11 can be welded from metal steel beams, with its length extending along the first direction X, providing a foundation for the subsequent installation and operation of other components. The first direction X can be left-right, front-back, or other directions. In the embodiments of this application, the first direction X is used as the front-back direction.

[0045] The movable frame 12 is arranged on the frame 11 and can move on the frame 11 along the first direction X, and can flexibly adjust its position as needed.

[0046] Reference Figure 2 and Figure 3 The locking head 13 is mounted on the mobile frame 12 and can move along the second direction Y on the mobile frame 12. The second direction Y is perpendicular to the first direction X. In the embodiment of the present application, the second direction Y can be a left-right direction. The locking head 13 is used to connect and lock with the locking mating heads 14 on both sides of the transfer vehicle 2.

[0047] The two locking fitting heads 14 are respectively arranged on both sides of the transfer vehicle 2. The two frames 11 are arranged side by side and a passage 3 is formed between the two frames 11 for the transfer vehicle 2 to pass through. A traction position 31 is provided at one end of the passage 3.

[0048] The frames 11 of the two traction mechanisms 1 are arranged side by side, forming a passage 3 between them for the transfer vehicle 2 to pass through, allowing it to subsequently dock with the traction mechanism 1 and be towed. The locking heads 14 are components provided on both sides of the transfer vehicle 2. Their function is to cooperate with the locking heads 13 to achieve a locking connection between the two, allowing the traction mechanism to "grab" the transfer vehicle 2 and tow it.

[0049] Reference Figure 6 When the transfer vehicle 2 and the mobile frame 12 are both located at the traction position 31 , the locking head 13 moves along the second direction Y close to the locking mating head 14 and is connected and locked with the locking mating head 14 .

[0050] When the transfer vehicle 2 enters the passage 3 and reaches the towing position 31, the two mobile frames 12 also move to the towing position 31 along the first direction X. Each mobile frame 12 is provided with a locking head 13. When the transfer vehicle 2 and the mobile frames 12 both reach the towing position 31, the locking heads 13, under the action of the driving device, move along the second direction Y toward the locking mating heads 14 on both sides of the transfer vehicle 2, and finally achieve connection and locking with them.

[0051] Reference Figure 5 When unlocking, the locking head 13 moves away from the locking mating head 14 along the second direction Y and is unlocked and separated from the locking mating head 14.

[0052] It can be understood that the connection and locking between the locking head 13 and the locking mating head 14 can be that after they move close to each other, the two are connected and locked with the help of the impact brought by the movement. After the connection and locking, there is no need to maintain force to ensure the continuation of the locking; or the locking of the two requires other structures to maintain actual force so that the two remain in the contact position, thereby maintaining the lock.

[0053] After the locking head 13 and the locking mating head 14 are successfully locked and connected, the two mobile frames 12 will move together along the first direction X toward the other end of the channel 3. Since the locking head 13 and the locking mating head 14 are already connected and locked together, the mobile frame 12 will drive the transfer vehicle 2 to move together through this connection relationship during the movement, so that the transfer vehicle 2 is smoothly towed to the target position along the channel 3. When the transfer vehicle 2 is towed to the target position, an unlocking operation is required. At this time, the locking head 13 is driven to move away from the locking mating head 14 along the second direction Y. As the locking head 13 moves away, it will eventually be smoothly unlocked and separated from the locking mating head 14. After the unlocking and separation are completed, each component can be reset according to the actual situation or prepared for the next traction operation cycle.

[0054] Based on the above structure, the working process of the traction device in the embodiment of the present application is as follows:

[0055] 1. The transfer vehicle 2 is towed by the AGV to the towing position 31 in the channel 3 formed by two racks 11 arranged side by side, and then the AGV stops towing.

[0056] 2. At the same time, the mobile frames 12 on the two frames 11 move along the first direction X to the traction position 31. When the transfer vehicle 2 and the mobile frame 12 are both at the traction position 31, the locking heads 13 on the mobile frame 12 move along a second direction Y perpendicular to the first direction X, approaching and locking with the locking mating heads 14 on both sides of the transfer vehicle 2.

[0057] 3. After the locking head 13 and the locking mating head 14 are locked, the two moving frames 12 move together along the first direction X toward the other end of the channel 3, and the transfer vehicle 2 is pulled along the channel 3 to the target position through the locking connection.

[0058] 4. After the transfer vehicle 2 reaches the target position, the locking head 13 moves away from the locking mating head 14 along the second direction Y to complete the unlocking and separation, after which each component can be reset or prepared for the next traction.

[0059] Reference Figure 2 、 Figure 3 and Figure 4 The lock fitting head 14 includes a connecting seat 141 and a lock column 142. The connecting seat 141 includes a fixing portion 1411 connected to one side of the transfer vehicle 2 and a convex portion 1412 protruding from the fixing portion along the second direction Y. The lock column 142 is arranged on the convex portion 1412, and the axis of the lock column 142 is perpendicular to the first direction X and the second direction Y.

[0060] The connecting seat 141 securely connects the entire locking head 14 to one side of the transfer cart 2 and provides structural support for the locking column 142. The fixing portion 1411 primarily connects to one side of the transfer cart 2, ensuring that the locking head 14 is securely attached to the transfer cart 2. The fixing portion 1411 can be a metal plate, securely connected to the side of the transfer cart 2 frame by welding or bolting, ensuring that it will not easily loosen or fall off during subsequent towing operations.

[0061] Reference Figure 4 The protrusion 1412 is a portion protruding from the fixing portion 1411 along the second direction Y, which provides a specific setting position for the lock column 142 so that when the lock column 142 is connected to the lock tongue 132, the fixing portion 1411 will not interfere with the lock body 131.

[0062] Reference Figure 4 The lock post 142 is disposed on the protrusion 1412 of the connecting seat 141, and its axis is perpendicular to the first direction X and the second direction Y. When the lock head 13 and the lock mating head 14 are docked, the lock post 142 needs to accurately enter the bayonet 1321 of the lock head 13 and achieve the switching between the locked and unlocked states through interaction with the lock tongue 132 and other components. The lock post 142 can be a cylindrical structure. In the embodiment of the present application, the axis direction of the lock post 142 is the third direction Z, that is, the up-down direction.

[0063] Reference Figure 2 、 Figure 5 and Figure 6 The lock head 13 includes a lock body 131, a lock tongue 132 and an elastic member 133. The lock body 131 is provided on the movable frame 12 and can move along the second direction Y. The lock tongue 132 is rotatably provided on the movable frame 12 and the rotation axis of the lock tongue 132 is parallel to the axis of the lock column 142. The lock tongue 132 is provided with a recessed bayonet 1321 and the direction of the bayonet 1321 can change as the lock tongue 132 rotates. The elastic member 133 is provided between the lock body 131 and the lock tongue 132. The elastic member 133 continuously pushes the lock tongue 132 to rotate the lock tongue 132 to rotate the lock tongue 132 to an unlocked position. When in the unlocked position, the bayonet 1321 faces the second direction Y.

[0064] The latch body 131 is mounted on the movable frame 12 and is movable along the second direction Y. The latch body 131 provides a mounting and movable platform for other components, such as the locking tongue 132 and the elastic member 133. Furthermore, through its movement on the movable frame 12, the latch head 13 is driven to engage and disengage with the latch mating head 14. A guide rail extending along the second direction Y can be provided between the latch body 131 and the movable frame 12 to enable precise movement of the latch body 131 along the second direction Y.

[0065] Locking bolt 132 is rotatably arranged on the mobile frame 12, and its rotation axis is parallel to the axis of lock post 142. Locking bolt 132 is provided with recessed bayonet socket 1321, and this bayonet socket 1321 is the key part that cooperates with lock post 142 to realize locking and unlocking. Through rotation, the direction of bayonet socket 1321 can change, thereby carries out different interactions with lock post 142 under different states (unlocked position and locked position). Locking bolt 132 can be the structure of similar " L " shape, wherein one end is provided with recessed bayonet socket 1321, and the shape of bayonet socket 1321 can be J-shaped, U-shaped or semicircular, and the size of bayonet socket 1321 can be determined according to the diameter of lock post 142, to guarantee that can accurately accommodate lock post 142. The other end of locking bolt 132 can be connected with mobile frame 12 by a pin 136, and this pin 136 has just constituted its rotation axis, so that locking bolt 132 can rotate within a certain range around this pin 136.

[0066] Reference Figure 2 、 Figure 5 and Figure 6 The elastic member 133 is arranged between the lock body 131 and the lock tongue 132. Its main function is to continuously push the lock tongue 132 so that the lock tongue 132 can be in a specific position (such as the unlocked position). The elastic member 133 can be a spring. One end of the spring is fixed in a reserved mounting hole on the lock tongue 132, and the other end is connected to the hook or protrusion structure on the lock body 131. Through the elastic force of the spring, the lock tongue 132 is continuously pushed to remain in the unlocked position. In this position, the bayonet 1321 faces the second direction Y. This orientation design is to facilitate the lock column 142 to smoothly enter the bayonet 1321 during the subsequent locking operation.

[0067] Reference Figure 2 、 Figure 5 and Figure 6 When the lock column 142 enters the bayonet 1321 and pushes the lock tongue 132 to rotate to the locked position, when in the locked position, the direction of the bayonet 1321 is from one end of the channel 3 with the traction position 31 to the other end of the channel 3.

[0068] Reference Figure 2 、 Figure 5 and Figure 6 When the latch body 131 moves in the second direction Y toward the lock post 142, the lock post 142 enters the latch 1321 and pushes against the lock tongue 132 to rotate. The lock tongue 132 overcomes the pushing force of the elastic member 133 and rotates to the locked position. In this position, the latch 1321 is oriented from one end of the channel 3 where the pulling portion 31 is provided to the other end of the channel 3. Therefore, when the movable frame 12 moves in this direction, since the latch 1321 is oriented in the same direction, the lock post 142 cannot escape from the latch 1321 during movement, thereby locking the lock post 142.

[0069] When a locking operation is required, the latch body 131 moves along the second direction Y, gradually approaching the position of the lock column 142. Due to the proximity of the latch body 131, the lock column 142 can accurately enter the recessed notch 1321 on the lock tongue 132. After the lock column 142 enters the notch 1321, it will push the lock tongue 132 to rotate, and the lock tongue 132 overcomes the pushing force of the elastic member 133 (such as a spring) to rotate to the locked position. At this time, the direction of the notch 1321 changes from one end of the channel 3 where the traction position 31 is provided to the other end of the channel 3, so that the lock column 142 is effectively "stuck", achieving a locked state between the latch head 13 and the latch mating head 14, thereby completing the locking connection between the entire traction device and the transfer vehicle 2, and subsequent traction operations can be performed.

[0070] When the transfer vehicle 2 reaches the target position and needs to be unlocked and separated, the lock body 131 moves in the opposite direction along the second direction Y. As the lock body 131 moves in the opposite direction, it gradually moves away from the lock column 142. The lock column 142 no longer abuts against the lock tongue 132. The lock tongue 132 returns to the unlocked position under the push of the elastic member 133. At this time, the bayonet 1321 faces the second direction Y. In this way, the lock column 142 can be smoothly disengaged from the bayonet 1321, realizing the unlocking and separation between the lock head 13 and the lock mating head 14. The transfer vehicle 2 can leave freely, and the various components of the traction device can also be prepared for the next traction operation.

[0071] Reference Figure 5 and Figure 6 The locking head 13 also includes a first limiting structure 134 and a second limiting structure 135 .

[0072] The first limiting structure 134 is provided on the lock body 131 and is located on one side of the locking tongue 132 along the first direction X. When the locking tongue 132 is pushed by the elastic member 133 and rotates to abut against the first limiting structure 134 , the locking tongue 132 is in the unlocked position.

[0073] The first limiting structure 134 is provided on the latch body 131, and is located on one side of the lock tongue 132 along the first direction X. The latch body 131 acts as a supporting platform, on which the lock tongue 132 can rotate, and the first limiting structure 134 is located on a side of the rotation path of the lock tongue 132, specifically on the side along the first direction X. When the lock tongue 132 rotates under the continuous pushing action of the elastic member 133, the lock tongue 132 gradually approaches the first limiting structure 134 until it abuts against the first limiting structure 134. At this moment of abutment, the lock tongue 132 is in the unlocked position. Specifically, the first limiting structure 134 is a limiting pin.

[0074] The second limiting structure 135 is provided on the lock body 131 and is located on a side of the lock tongue 132 away from the lock post 142 . When the lock tongue 132 is pushed by the lock post 142 and rotates to abut against the second limiting structure 135 , the lock tongue 132 is in a locked position.

[0075] The second limiting structure 135 is also provided on the lock body 131, but is located on the side of the lock tongue 132 away from the lock post 142. When the lock post 142 enters the latch 1321 of the lock tongue 132 and applies a pushing force to the lock tongue 132, the lock tongue 132 will rotate due to this external force overcoming the elastic force of the elastic member 133. The lock tongue 132 rotates away from the lock post 142. During this rotation process, the lock tongue 132 gradually approaches the second limiting structure 135 until it abuts the second limiting structure 135, indicating that the lock tongue 132 has reached the locked position. Specifically, the second limiting structure 135 is a block or the inner wall of the cavity of the lock body 131.

[0076] Reference Figure 5 and Figure 6 The lock body 131 is integrally connected to the second limiting structure 135 , one end of the elastic member 133 abuts against the second limiting structure 135 , and the other end abuts against the lock tongue 132 .

[0077] The lock body 131 and the second limiting structure 135 are integrally connected, and they are manufactured as a whole component during the manufacturing process.

[0078] One end of the elastic member 133 abuts the second limiting structure 135, and the other end abuts the lock tongue 132. In the initial state, due to its elastic properties, the elastic member 133 exerts a continuous pushing force on the lock tongue 132. Because one end of the elastic member abuts the second limiting structure 135, which is integrally connected to the lock body 131 and fixed in relative position, the elastic member 133 uses the fixed second limiting structure 135 as a support point to apply force to the lock tongue 132, pushing the lock tongue 132 into the unlocked position and maintaining it there.

[0079] Reference Figure 5 The lock head 13 also includes a pin 136, which is inserted into the lock body 131. The axis of the pin 136 is parallel to the axis of the lock column 142. The lock tongue 132 is provided with an axial hole 1322. The lock tongue 132 is mounted on the pin 136 through the axial hole 1322 and rotates.

[0080] The pin 136 is passed through the lock body 131 , and its axis is parallel to the axis of the lock column 142 , to ensure that the lock tongue 132 can rotate smoothly when the lock tongue 132 and the lock column 142 cooperate with each other to perform locking and unlocking operations.

[0081] The lock tongue 132 is provided with an axis hole 1322, which allows the lock tongue 132 to be inserted into the pin 136, thereby achieving a rotatable function. When the lock tongue 132 is pushed by the elastic member 133 or the lock column 142, it will rotate around the pin 136, changing its position and state, such as rotating from the unlocked position to the locked position, or from the locked position to the unlocked position.

[0082] Reference Figure 5 A accommodating cavity 1311 is formed on a side of the lock body 131 facing the channel 3, and the lock tongue 132 is located in the accommodating cavity 1311. The lock body 131 is also provided with an avoidance groove 1322 for the lock column 142 to enter and push against the lock tongue 132. The notch of the avoidance groove 1322 faces the second direction Y, and the avoidance groove 1322 passes through the lock body 131 in a direction parallel to the lock column 142.

[0083] The side of the lock body 131 facing the channel 3 defines a receiving cavity 1311, and the locking tongue 132 is located within this receiving cavity 1311. The provision of the receiving cavity 1311 provides a relatively independent movement space for the locking tongue 132, so that the locking tongue 132 will not be interfered with by other external factors during rotation, while also ensuring the compactness and integrity of the entire lock head 13 structure.

[0084] Reference Figure 2 and Figure 6 The lock body 131 is also provided with an avoidance groove 1322, the notch of which is facing the second direction Y, so that when the lock body 131 moves along the second direction Y and approaches the lock column 142, the lock column 142 can smoothly enter the avoidance groove 1322 and then push the lock tongue 132 located in the accommodating cavity 1311.

[0085] In the operating environment of the entire traction device, the actual road conditions may not always be smooth, which may cause the transfer vehicle 2 to bump up and down during driving. The lock pins 142 in the lock fittings 14 provided on both sides of the transfer vehicle 2 will also change position accordingly as the transfer vehicle 2 moves up and down.

[0086] In the embodiment of the present application, because the avoidance groove 1322 is through, it has no obstruction in the up and down directions. During traction, it can allow the lock column 142 to move up or down due to road bumps, thereby achieving floating traction and improving applicability.

[0087] Reference Figure 4The lock post 142 is rotatably connected with the convex portion 1412. In the structure of the lock fitting head 14, the lock post 142 is arranged on the convex portion 1412 of the connecting seat 141, and they are rotatably connected. Specifically, a bearing is arranged on the convex portion 1412, and one end of the lock post 142 is inserted into the bearing, so that the lock post 142 can rotate around its own axis.

[0088] When the lock fitting head 14 is docked with the lock fitting head 14, if the lock post 142 cannot rotate, the same position of the lock post 142 and the bayonet 1321 and other components contacted each time will be seriously worn due to large pressure and friction.

[0089] In the embodiment of the present application, the lock post 142 can rotate, and when it is docked, it can automatically adjust the angle and position according to the force condition, disperse the force, and not always concentrate in one place, so as to reduce the wear of the single place of the lock post 142, prolong the service life of the related components, and ensure the reliability and stability of the operation of the traction device.

[0090] Referring to Figure 1 and Figure 3 , the traction mechanism 1 further comprises a first driving assembly 15 for driving the moving frame 12 to move along the first direction X.

[0091] The main function of the first driving assembly 15 is to provide power for the moving frame 12, so that the moving frame 12 can move accurately and stably along the first direction X on the rack 11.

[0092] The first driving assembly 15 can specifically include a servo motor 151, a gear and a rack 152 mechanism. The servo motor 151 is a power source and can accurately output power to drive the gear to rotate according to the instruction. The servo motor 151 is arranged on the moving frame 12. The gear is engaged with the rack 152 arranged along the first direction X on the rack 11, and the gear drives the rack 152 when it rotates, so as to realize the linear motion of the moving frame 12 along the first direction X.

[0093] In addition, a guide rail along the first direction X can be arranged between the moving frame 12 and the rack 11, which can ensure that the moving frame 12 moves more stably and accurately.

[0094] Through the cooperation of the servo motor 151, the gear and the rack 152 in the first driving assembly 15 and the assistance of the guide rail, the moving frame 12 can move accurately, stably and efficiently along the first direction X on the rack 11 according to the demand, which plays a crucial role in the accurate traction of the whole traction device to the transfer trolley 2 and subsequent various operations (such as accurate docking of the lock fitting head 13 and the lock fitting head 14).

[0095] Referring to Figure 1 and Figure 3The traction mechanism 1 also includes a second driving component 16, which is used to drive the locking head 13 to move along the second direction Y.

[0096] Specifically, the second drive assembly 16 may include a cylinder. The locking head 13 is mounted on a mounting plate, and a guide rail is provided between the mounting plate and the movable frame 12. The guide rail allows the mounting plate to move smoothly and accurately along the second direction Y. When relevant operations are to be performed, such as docking and locking, the control system will allow compressed air to enter the cylinder to extend the piston in the cylinder, and the piston will push the mounting plate to move along the guide rail toward the locking mating head 14, and the locking head 13 will also move to dock and lock. If unlocking and separation are required, the cylinder air pressure is changed to allow the piston to retract, and the mounting plate will carry the locking head 13 along the guide rail away from the locking mating head 14 to complete the unlocking.

[0097] The second driving assembly 16 may further include a buffer to prevent excessive impact force from being generated when the locking head 13 and the locking mating head 14 are docked.

[0098] The buffer can be positioned at a specific location along the path of the mounting plate along the guide rail. During docking, the second drive assembly 16 (here, a cylinder is used as an example) pushes the mounting plate to drive the locking head 13 toward the locking mating head 14. Without a buffer, when the locking head 13 rapidly approaches and ultimately contacts the locking mating head 14, a large impact force is likely to be generated due to factors such as the relative speed of the two and the force of the cylinder's push. This can easily lead to problems such as component deformation and increased wear. It can also affect the accuracy and stability of the docking, making it difficult to complete the locking connection properly.

[0099] With the buffer installed, when the locking head 13 is about to contact the locking mating head 14, the buffer will start to work. The impact force generated at the moment of contact will first act on the buffer, greatly reducing the impact on the locking head 13 and the locking mating head 14, thereby achieving a buffering effect. Specifically, the buffer can be a spring or a hydraulic damper.

[0100] An embodiment of the present application also provides a PACK battery production system, comprising the traction device in any of the above embodiments.

[0101] Since the PACK battery production system of the embodiment of the present application includes the traction device in any of the above embodiments, it has the beneficial effects brought by the traction device in any of the above embodiments, which will not be described in detail here.

[0102] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A traction device for traction of a transport vehicle, characterized in that: The traction device includes two traction mechanisms; The traction mechanism includes a frame, a movable frame, a locking head and a locking mating head, wherein the frame extends along a first direction, the movable frame is movably arranged on the frame along the first direction, the locking head is arranged on the movable frame and can move along a second direction, the second direction being perpendicular to the first direction, and the locking mating head can be connected and locked with the locking head; The two locking fitting heads are respectively arranged on both sides of the transfer vehicle, the two frames are arranged side by side and a passage is formed between the two frames for the transfer vehicle to pass through, and a traction position is provided at one end of the passage; When the transfer vehicle and the mobile frame are both located at the traction position, the locking head moves along the second direction to approach the locking mating head and is connected and locked with the locking mating head; When unlocking, the locking head moves away from the locking fitting head along the second direction and is unlocked and separated from the locking fitting head.

2. The traction device according to claim 1, characterized in that The lock fitting head includes a connecting seat and a lock column, the connecting seat includes a fixing portion connected to one side of the transfer vehicle and a protrusion protruding from the fixing portion along the second direction, the lock column is provided on the protrusion, and the axis of the lock column is perpendicular to the first direction and the second direction; The lock head includes a lock body, a lock tongue, and an elastic member. The lock body is provided on the movable frame and can move along the second direction. The lock tongue is rotatably provided on the movable frame, and the rotation axis of the lock tongue is parallel to the axis of the lock column. The lock tongue is provided with a recessed bayonet and the direction of the bayonet can be changed as the lock tongue rotates. The elastic member is provided between the lock body and the lock tongue. The elastic member continuously pushes against the lock tongue to rotate the lock tongue to an unlocked position. When in the unlocked position, the bayonet faces the second direction. When the lock column enters the bayonet and pushes the lock tongue to rotate to the locking position, when in the locking position, the bayonet is oriented from one end of the channel where the traction position is provided to the other end of the channel.

3. The traction device according to claim 2, characterized in that: The locking head also includes: a first limiting structure, the first limiting structure being provided on the lock body and located on one side of the lock tongue along the first direction, and when the lock tongue is pushed by the elastic member and rotates to abut against the first limiting structure, the lock tongue is in the unlocked position; The second limiting structure is provided on the lock body and is located on the side of the lock tongue away from the lock column. When the lock tongue is pushed by the lock column and rotated to abut the second limiting structure, the lock tongue is in the locked position.

4. The traction device according to claim 3, characterized in that: The lock body is integrally connected to the second limiting structure, one end of the elastic member abuts against the second limiting structure, and the other end abuts against the lock tongue.

5. The traction device according to claim 2, characterized in that: The lock head also includes a pin shaft, which is passed through the lock body. The axis of the pin shaft is parallel to the axis of the lock column. The lock tongue is provided with an axial hole. The lock tongue is fitted on the pin shaft through the axial hole and rotates.

6. The traction device according to claim 2, characterized in that: The lock body is provided with an accommodating cavity on a side facing the channel, and the lock tongue is located in the accommodating cavity. The lock body is also provided with an avoidance groove for the lock column to enter to push against the lock tongue, the notch of the avoidance groove faces the second direction, and the avoidance groove passes through the lock body in a direction parallel to the lock column.

7. The traction device according to claim 2, characterized in that: The locking column is rotatably connected to the protrusion.

8. The traction device according to claim 1, characterized in that The traction mechanism further includes a first driving assembly, and the first driving assembly is used to drive the moving frame to move along the first direction.

9. The traction device according to claim 1, characterized in that: The traction mechanism further includes a second driving assembly, and the second driving assembly is used to drive the locking head to move along the second direction.

10. A PACK battery production system, characterized in that: Comprising the traction device according to any one of claims 1 to 9.

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