Locking turnover device of transfer tray and battery transfer tool

Abstract

The utility model discloses a locking turnover device of a transfer tray and a battery transfer tool. The locking turnover device of the transfer tray comprises a trolley assembly, a transfer tray assembly and a self-locking assembly. A transfer tray assembly and a self-locking assembly are arranged at the top of the trolley assembly; the self-locking assembly is used for automatically locking the transfer tray assembly placed at the top of the trolley assembly when the transfer tray assembly moves rightwards and releasing the locking state of the transfer tray assembly when the transfer tray assembly is pushed leftwards by a worker; the top of the transfer tray assembly is used for containing objects needing to be transferred. According to the locking turnover device of the transfer tray and the battery transfer tool, the design is scientific, the transfer tray can be automatically and reliably locked on the turnover trolley along with pulling of a worker, operation is convenient, fast and efficient, the working efficiency is improved, and the battery transfer tool is suitable for popularization and application. The transfer safety of the transfer tray and articles such as battery modules placed on the transfer tray is effectively guaranteed, and damage is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially, and it is a kind of locking turnover device of transfer tray and battery transfer tool. BACKGROUND

[0002] Currently, in the field of battery module assembly (PACK), when the order quantity is less, to save cost, the assembly process of battery module (i.e. the process of assembling battery cell into battery module, and the process of battery module and busbar welding, etc.), generally adopts semi-automatic assembly, at this time, it is necessary to pass through turnover trolley, to make the transfer tray (specifically, the transfer tray carrying battery module, also called transfer tray assembly) loaded on turnover trolley turnover between different stations.

[0003] During the turnover of transfer tray, generally, the way of manually inserting pin is adopted, to lock transfer tray on turnover trolley, and the specific operation process is: first, place transfer tray on turnover trolley, then manually insert pin by staff, to lock transfer tray on turnover trolley. Therefore, this manual locking mode has defects: when manually operating, it is easy to forget to insert pin, resulting in the fall of transfer tray from turnover trolley during the turnover process, causing damage to transfer tray and battery module placed on transfer tray.

[0004] Therefore, it is urgent to develop a kind of technology, which can solve the above technical problems. INVENTION CONTENTS

[0005] The utility model aims at the technical defects existing in prior art, provides a kind of locking turnover device of transfer tray and battery transfer tool.

[0006] Therefore, the utility model provides a kind of locking turnover device of transfer tray, it includes: trolley assembly, transfer tray assembly and self-locking component;

[0007] The top of trolley assembly is provided with transfer tray assembly and self-locking component;

[0008] Self-locking component is used to automatically lock transfer tray assembly placed on the top of trolley assembly when transfer tray assembly moves to right, and release the locking state of transfer tray assembly when transfer tray assembly is pushed to left by staff;

[0009] The top of transfer tray assembly is used to place the goods needing transfer;

[0010] Trolley assembly includes: frame, tray carrier plate, first stop block and second stop block;

[0011] The top of frame is provided with horizontally distributed tray carrier plate;

[0012] The top of the tray carrier is provided with a first block at each of the front and rear ends in transverse distribution.

[0013] The top of the tray carrier is provided with two second blocks at the right end.

[0014] The transfer tray assembly comprises a transfer tray and a first locking block.

[0015] The top of the transfer tray is provided with a first locking block at the right end.

[0016] The self-locking assembly comprises a mounting plate, a second locking block and a pin shaft fixing plate.

[0017] The top of the mounting plate is provided with a pin shaft fixing plate.

[0018] The second locking block is arranged above the pin shaft fixing plate.

[0019] The lower end of the second locking block is hingedly connected to the upper end of the pin shaft fixing plate.

[0020] The second locking block is used for cooperating with the first locking block in the transfer tray assembly to realize the locking function of the transfer tray assembly.

[0021] In addition, the utility model provides a battery transfer tool, which comprises the locking turnover device of the transfer tray as described above.

[0022] The top of the transfer tray is provided with a plurality of single batteries.

[0023] According to the technical scheme of the utility model, compared with the prior art, the locking turnover device of the transfer tray and the battery transfer tool are scientific in design, can automatically and reliably lock the transfer tray on the turnover trolley under the pulling of the staff, are convenient, fast and efficient to operate, are favorable for improving work efficiency, effectively guarantee the transfer safety of the transfer tray and the battery module and other articles placed thereon, avoid damage and have great production practical significance.

[0024] In addition, by applying the utility model, the transfer tray assembly can be conveniently unlocked through the pushing and pressing actions of the staff. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a perspective structural schematic view of the locking turnover device of the transfer tray provided by the utility model;

[0026] Figure 2 It is a structural schematic view of the trolley assembly in the locking turnover device of the transfer tray provided by the utility model;

[0027] Figure 3The utility model provides a kind of locking turnover device of transfer tray, the structure schematic diagram of transfer tray assembly in the utility model provides a kind of locking turnover device of transfer tray,

[0028] Figure 4 The utility model provides a kind of locking turnover device of transfer tray, the structure schematic diagram of self-locking assembly in the utility model provides a kind of locking turnover device of transfer tray,

[0029] Figure 5 The utility model provides a kind of locking turnover device of transfer tray, the explosion schematic diagram of self-locking assembly in the utility model provides a kind of locking turnover device of transfer tray,

[0030] Figure 6 The utility model provides a kind of locking turnover device of transfer tray, it has the partial structure schematic diagram of self-locking assembly before self-locking of the utility model provides a kind of locking turnover device of transfer tray,

[0031] Figure 7 The utility model provides a kind of locking turnover device of transfer tray, it has the partial structure schematic diagram of self-locking assembly after self-locking of the utility model provides a kind of locking turnover device of transfer tray. DETAILED DESCRIPTION

[0032] The technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment.Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0033] In the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not indicated or implied that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model.

[0034] In the description of the patent, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connect", "set" should be understood broadly, for example, it can be fixedly connected, set, or it can be detachably connected, set, or integrally connected, set.The above-mentioned terms in the patent can be understood according to specific meaning by the person skilled in the art according to specific circumstances.

[0035] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified.

[0036] Referring to Figures 1 to 7 The utility model provides a kind of transfer tray's locking turnover device and battery transfer tool, comprising: trolley assembly 1, transfer tray assembly 2 and self-locking assembly 3;

[0037] The top of trolley assembly 1 is provided with transfer tray assembly 2 and self-locking assembly 3;

[0038] Self-locking assembly 3 is used to automatically lock transfer tray assembly 2 placed on the top of trolley assembly 1 when transfer tray assembly 2 moves to the right, and release the locking state of transfer tray assembly 2 when transfer tray assembly 2 is pushed to the left by staff (at this time, transfer tray assembly 2 can move to the left and leave trolley assembly 1);

[0039] The top of transfer tray assembly 2 is used to place the articles (such as battery modules) that need to be transferred;

[0040] It should be noted that the function of trolley assembly 1 is to carry and transfer tray assembly 2, so that it can be transferred between different stations. The function of self-locking assembly 3 is to automatically lock transfer tray assembly 2 to prevent it from separating from trolley assembly 1 during the transfer process, causing the transfer tray and the products placed on it to fall accidentally. The utility model can automatically lock transfer tray assembly 2 through self-locking assembly 3 when it returns to trolley assembly 1 from different stations, which is convenient and fast.

[0041] It should be noted that the function of self-locking assembly 3 is to automatically lock transfer tray assembly 2 on trolley assembly 1. Before locking, transfer tray assembly 2 can slide horizontally left and right relative to trolley assembly 1. After locking, transfer tray assembly 2 is locked on trolley assembly 1 and has no movement relative to trolley assembly 1.

[0042] It should also be noted that when trolley assembly 1 is transferred between different stations, transfer tray assembly 2 needs to be locked. When trolley assembly 1 reaches the station, the locking of transfer tray assembly 2 can be released (not locked) by the operation of the staff.

[0043] In the utility model, referring to Figure 2 The trolley assembly 1 comprises a frame 11, a tray carrier plate 12, a first stop block 13 and a second stop block 14.

[0044] The top of the frame 11 is provided with horizontally distributed tray loading plates 12.

[0045] The top of the tray loading plate 12 is provided with a first block 13 at each of the front and rear ends.

[0046] The top of the tray loading plate 12 is provided with two second blocks 14 at the right end.

[0047] Specifically, the two first blocks 13 are symmetrically distributed front and rear.

[0048] The two second blocks 14 are symmetrically distributed front and rear.

[0049] It should be noted that the tray loading plate 12 is arranged on the frame 11. The first block 13 is symmetrically arranged on the tray loading plate 12 at the front and rear ends, and is located at the horizontal center of the tray loading plate 12. The first block 13 functions to limit the movement of the tray assembly 2 in the longitudinal direction.

[0050] It should be noted that the second block 14 is symmetrically arranged on the tray loading plate 12 at the front and rear ends, and is located at the right side of the tray loading plate 12. The second block 14 functions to stop the tray assembly 2 from moving to the right when it encounters the second block 14.

[0051] Specifically, the top of the frame 11 is provided with a handle 15 at the right end.

[0052] The tray loading plate 12 is provided with a vertically distributed gap at a position corresponding to the handle 15, for allowing the handle 15 to pass through.

[0053] It should be noted that the trolley assembly 1 is transferred between different stations by pushing the handle 15 by a worker.

[0054] In the present application, as shown in Figure 3 、 Figure 6 and Figure 7 , the transfer tray assembly 2 comprises a transfer tray (i.e. an article loading plate) 21 and a first locking block 24.

[0055] The top of the transfer tray 21 is provided with the first locking block 24 at the right end.

[0056] The first locking block 24 is used in cooperation with the second locking block 32 in the self-locking assembly 3 to achieve the function of locking the transfer tray assembly 2.

[0057] Specifically, the top of the transfer tray 21 is provided with two tray handles 23 at the right end.

[0058] The two tray handles 23 are symmetrically distributed front and rear.

[0059] The first locking block 24 is located between the two tray handles 23.

[0060] It should be noted that when the locking of the transfer tray assembly 2 is released, the staff can push and pull the tray handle 23 by hand to move the transfer tray assembly 2 to the left from the trolley assembly 1 into the work station, or to the right from the work station onto the trolley assembly 1.

[0061] In specific implementation, the first locking block 24 includes a first locking block support table 241 and a first locking protrusion 240.

[0062] The right end of the first locking block support table 241 is provided with the first locking protrusion 240.

[0063] The right side of the first locking protrusion 240 has a first feature surface 240A1 distributed obliquely.

[0064] The left side of the first locking protrusion 240 has a second feature surface 240B1 distributed vertically.

[0065] The height of the first feature surface 240A1 gradually decreases from left to right.

[0066] It should be noted that the first locking block 24 has two feature surfaces: the first feature surface 240A1 and the second feature surface 240B1.

[0067] Further, the top height of the first feature surface 240A1 is greater than the top surface height of the first locking block support table 241.

[0068] The lowest position height of the first feature surface 240A1 is less than the top surface height of the first locking block support table 241 and greater than the bottom surface height of the first locking block support table 241.

[0069] The top height of the second feature surface 240B1 is greater than the top surface height of the first locking block support table 241.

[0070] Further, the top surface of the first locking protrusion 240 is a smooth plane, and the second feature surface 240B1 and the first feature surface 240A1 are respectively located on the left and right sides of the top surface of the first locking protrusion 240.

[0071] In specific implementation, the bottom of the transfer tray 21 is uniformly provided with a plurality of ball eye 25 (i.e. universal ball).

[0072] The ball eye 25 is used to contact the top surface of the tray loading plate 12 in the trolley assembly 1.

[0073] It needs to be explained that the number of the ball eye 25 is several, which is evenly distributed on the bottom of the battery module carrier plate 21. The function of the ball eye 25 is that when the transfer tray assembly 2 is moved left and right by the staff using the tray handle 23, it rotates together, thereby reducing the frictional resistance between the transfer tray assembly 2 and the trolley assembly 1.

[0074] Specifically, the transfer tray (i.e. the article carrier plate) 21 is provided with a battery module 22 on the top.

[0075] In the utility model, referring to Figures 4 to 7 As shown in the figure, the self-locking assembly 3 comprises: a mounting plate 31, a second locking block 32, a spring 33 and a pin shaft fixing plate 34.

[0076] The top right end of the mounting plate 31 is provided with the pin shaft fixing plate 34.

[0077] The pin shaft fixing plate 34 is provided with the second locking block 32 above it.

[0078] The lower end of the second locking block 32 is hingedly connected (i.e. rotatably connected) to the upper end of the pin shaft fixing plate 34.

[0079] The bottom right end of the second locking block 32 and the top right end of the pin shaft fixing plate 34 are provided with a vertically distributed spring 33 in front of them.

[0080] The second locking block 32 is used to cooperate with the first locking block 24 in the transfer tray assembly 2 to realize the locking function of the transfer tray assembly 2.

[0081] Specifically, the lower end of the second locking block 32 and the upper end of the pin shaft fixing plate 34 are hingedly connected (i.e. rotatably connected) through the pin shaft 35.

[0082] Further, the bottom surface of the second locking block 32 is provided with a vertically distributed first support block 323.

[0083] The first support block 323 is provided with a longitudinally distributed first through hole 322.

[0084] The front and back of the top left end of the pin shaft fixing plate 34 is respectively provided with a vertically distributed second support block 340.

[0085] Each second support block 340 is provided with a longitudinally distributed second through hole 342.

[0086] The pin shaft 35 longitudinally penetrates through the two second through holes 342 on the second support block 340 and the first through hole 322 on the first support block 323.

[0087] Further, the center points of the two second through holes 342 and the first through hole 322 are located on the same longitudinal center axis.

[0088] It should be noted that the pin shaft 35 passes through the first through hole 322 on the first support block 323 and the second through hole 342 in the pin shaft fixing plate 34, and the second through hole 342 and the first through hole 322 are coaxial, so that the second locking block 32 can rotate around the pin shaft 35 relative to the pin shaft fixing plate 34.

[0089] Specifically, a first cylindrical protrusion 3210 vertically distributed is arranged at the middle of the right end of the bottom surface of the second locking block 32.

[0090] A second cylindrical protrusion 341 is arranged at the middle of the right end of the top of the pin shaft fixing plate 34.

[0091] The first cylindrical protrusion 3210 and the second cylindrical protrusion 341 are arranged in a vertical correspondence.

[0092] The first cylindrical protrusion 3210 and the second cylindrical protrusion 341 together form a cylindrical whole, and the outside of the cylindrical whole is sleeved with a helical spring 33.

[0093] It should be noted that the spring 33 is arranged between the second locking block 32 and the pin shaft fixing plate 34, and the upper part of the spring is sleeved into the first cylindrical protrusion 3210, and the lower part is sleeved into the second cylindrical protrusion 341.

[0094] It should be noted that the first cylindrical protrusion 321 and the second cylindrical protrusion 341 function to float the spring 33 and prevent the spring 33 from being detached.

[0095] Specifically, the second locking block 32 includes a second locking block support table 321 and a second locking protrusion 320.

[0096] The left end of the second locking protrusion 320 is provided with a second locking protrusion 320.

[0097] The left side of the second locking protrusion 320 is provided with a third feature surface 320A2 which is inclinedly distributed.

[0098] The right side of the second locking protrusion 320 is provided with a fourth feature surface 320B2 which is vertically distributed.

[0099] The height of the third feature surface 320A2 gradually decreases from left to right.

[0100] Further, the top height of the third feature surface 320A2 is less than the top height of the second locking block support table 321 and greater than the bottom height of the second locking block support table 321.

[0101] The lowest position height of the third characteristic surface 320A2 is less than the bottom surface height of the second locking block support platform 321.

[0102] The top height of the fourth characteristic surface 320B2 is greater than the bottom surface height of the second locking block support platform 321.

[0103] Further, the bottom surface of the second locking protrusion 320 is a smooth plane, and the third characteristic surface 320A2 and the fourth characteristic surface 320B2 are respectively located on the left and right sides of the bottom surface of the second locking protrusion 320.

[0104] Further, the right end top of the second locking block support platform 321 has a pressing surface 321C,

[0105] In a specific implementation, the height of the central axis of the pin shaft 35 is lower than the height of the lowest position of the third characteristic surface 320A2 in the second locking block 32 of the self-locking assembly 3.

[0106] The height difference between the central axis of the pin shaft 35 and the lowest position of the third characteristic surface 320A2 in the second locking block 32 is H.

[0107] It should be noted that, as Figure 6 shown, when the tray assembly 2 moves to the right, the first locking block 24 collides with the second locking block 32, so that the second locking block 32 is subjected to a horizontal force F, and the height difference between the horizontal force F and the central axis of the pin shaft 35 is H. At this time, the action point of the force is translated to the central axis of the pin shaft 35. According to the translation theorem of force, the force acting on a rigid body can be parallelly moved to any specified point on the rigid body, but at the same time, a force couple must be added, and the moment of the force couple is equal to the moment of the original force on the new action point. The size of the moment T in the patent is: T=F*H. The moment T can make the second locking block 32 rotate clockwise around the pin shaft 35. It can be seen that the larger H is, the larger T is, and the easier the rotation is. However, when H is large, the structure is not very compact. Therefore, H is in a suitable range (for example, the value range of H can be 1 / 3-2 / 3 of the vertical height of the first locking protrusion 240).

[0108] In a specific implementation, when the tray assembly 2 moves to the right, the fourth characteristic surface 320B2 in the second locking block 32 is in contact with the second characteristic surface 240B1 in the first locking block 24 (at this time, the fourth characteristic surface 320B2 in the second locking block 32 prevents the second characteristic surface 240B1 in the first locking block 24 from moving to the left), and the left side surface of the second stop block 14 in the trolley assembly 1 is in contact (specifically, in tight contact) with the right side surface of the transfer tray 21 in the transfer tray assembly 2.

[0109] It should be noted that, as Figure 6As shown, the rotation center of the second locking block 32 rotating around the pin shaft 35 has a height difference H with the lowest point of the third feature surface 320A2 in the second locking block 32, when the transfer tray assembly 2 moves to the right, the first feature surface 240A1 in the first locking block 24 collides with the third feature surface 320A2 in the second locking block 32, at this time, the second locking block 32 in the self-locking assembly 3 rotates clockwise around the pin shaft 35 under the action of the collision force, at this time, the spring 33 is compressed downward.

[0110] When the transfer tray assembly 2 continues to move to the right, reaches the position as shown, Figure 7 Under the action of the spring 33 (specifically the upward elastic force), the second locking block 32 rotates counterclockwise around the pin shaft 35, the spring 33 returns to the state before being compressed, at this time, the fourth feature surface 320B2 in the second locking block 32 prevents the second feature surface 240B1 in the first locking block 24 from moving to the left (that is, the second locking block 32 locks the left moving trend of the first locking block 24, at this time, the fourth feature surface 320B2 in the second locking block 32 is in contact with the second feature surface 240B1 in the first locking block 24, and the fourth feature surface 320B2 is located on the left side of the second feature surface 240B1), and the second stop block 14 prevents the transfer tray assembly 2 from continuing to move to the right, in this state, the self-locking assembly 3 locks the transfer tray assembly 2 on the trolley assembly 1.

[0111] When it is necessary to unlock, the worker presses the pressing surface 321C in the second locking block 32 with one hand, the second locking block 32 rotates clockwise around the pin shaft 35, the spring 33 is compressed, the second locking block 32 no longer locks the first locking block 24, the worker pushes the tray handle 23 on the transfer tray assembly 2 to the left with the other hand, so that the transfer tray assembly 2 moves to the left, and the self-locking is released.

[0112] Based on the above-mentioned locking turnover device of the transfer tray provided by the utility model, the utility model also provides a battery transfer tool, which comprises the locking turnover device of the transfer tray as described above;

[0113] A battery module 22 is arranged on the top of the transfer tray 21.

[0114] The battery module 22 comprises a plurality of single batteries (which can be connected in series, in parallel or in series-parallel).

[0115] In order to more clearly understand the technical scheme of the utility model, the working process of the utility model is described below.

[0116] First, after the battery module 22, which was pre-placed in the transfer pallet assembly 2, has been processed at the previous workstation, the staff manually pulls the pallet handle 23 to move the transfer pallet assembly 2 to the right, so that the transfer pallet assembly 2 moves from the previous workstation to the trolley assembly 1.

[0117] In the second step, as the transfer pallet assembly 2 continues to move to the right, the first feature surface 240A1 of the first locking block 24 collides with the third feature surface 320A2 of the second locking block 32 (e.g., Figure 6 As shown), at this time, the second locking block 32 rotates clockwise around the pin 35 under the action of the collision force, and the spring 33 is compressed.

[0118] Third step, as the transfer pallet assembly 2 continues to move to the right, reaching the point where... Figure 7 When in the indicated position, under the action of spring 33 (specifically, an upward elastic force), the second locking block 32 rotates counterclockwise around the pin 35, and spring 33 returns to its state before being compressed. At this time, the fourth feature surface 320B2 in the second locking block 32 will prevent the second feature surface 240B1 in the first locking block 24 from moving to the left (at this time, the fourth feature surface 320B2 in the second locking block 32 is in contact with the second feature surface 240B1 in the first locking block 24, and the fourth feature surface 320B2 is located to the left of the second feature surface 240B1, that is, the second locking block 32 locks the leftward movement tendency of the first locking block 24), while the second stop 14 will prevent the pallet assembly 2 from continuing to move to the right. At this time, the transfer pallet assembly 2 completes self-locking.

[0119] In the fourth step, the worker manually pushes the trolley assembly 1 into the rear workstation and presses the pressing surface 321C of the second locking block 32 with one hand. The second locking block 32 rotates clockwise around the pin 35, and the spring 33 is compressed. At this time, the worker uses the other hand to manually push the tray handle 23, so that the tray assembly 2 moves to the left, thereby releasing the self-locking. The transfer tray assembly 2 can then move from the trolley assembly 1 to the rear workstation to the left.

[0120] In summary, the structure of this utility model is scientific and reasonable. When the worker manually pulls the transfer pallet assembly 2 from the workstation to the right onto the trolley assembly 1, the self-locking assembly 3 automatically locks the transfer pallet assembly 2 by moving the pallet assembly 2 to the right. In addition, the transfer pallet assembly 2 can be released by pressing the pressing surface 321C in the second locking block 32, which is quick and convenient to operate.

[0121] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A locking carousel for pallets, characterized in that, The utility model relates to a trolley assembly (1), a transfer tray assembly (2) and a self-locking assembly (3). The top of the trolley assembly (1) is provided with the transfer tray assembly (2) and the self-locking assembly (3). The self-locking assembly (3) is used for automatically locking the transfer tray assembly (2) placed on the top of the trolley assembly (1) when the transfer tray assembly (2) moves to the right and releasing the locking state of the transfer tray assembly (2) when the transfer tray assembly (2) is pushed to the left by the staff. The top of the transfer tray assembly (2) is used for placing the articles to be transferred. The trolley assembly (1) comprises a frame (11), a tray loading plate (12), a first stop block (13) and a second stop block (14). The top of the frame (11) is provided with the horizontally distributed tray loading plate (12). The top of the tray loading plate (12) is provided with a transversely distributed first stop block (13) at each of the front and rear ends. The top right end of the tray loading plate (12) is provided with two second stop blocks (14). The transfer tray assembly (2) comprises a transfer tray (21) and a first locking block (24). The top right middle part of the transfer tray (21) is provided with the first locking block (24). The self-locking assembly (3) comprises a mounting plate (31), a second locking block (32) and a pin shaft fixing plate (34). The top right end of the mounting plate (31) is provided with the pin shaft fixing plate (34). The second locking block (32) is arranged directly above the pin shaft fixing plate (34). The lower end of the second locking block (32) is hingedly connected to the upper end of the pin shaft fixing plate (34). The second locking block (32) is used for cooperating with the first locking block (24) in the transfer tray assembly (2) to realize the locking function of the transfer tray assembly (2). The two first stop blocks (13) are symmetrically distributed front and back.

2. The locking carousel for pallets according to claim 1, characterized in that, The two second stop blocks (14) are symmetrically distributed front and back. The top right end of the frame (11) is provided with a handle (15). The tray loading plate (12) is provided with a vertically distributed gap for the handle (15) to pass through at a position corresponding to the handle (15). The bottom of the transfer tray (21) is uniformly provided with a plurality of ball eye (25).

3. The locking carousel for pallets according to claim 1, characterized in that The ball eye (25) is used for contacting the top surface of the tray loading plate (12) in the trolley assembly (1). And / or, The top right end of the transfer tray (21) is provided with two tray handles (23). The two tray handles (23) are symmetrically distributed front and back. The first locking block (24) is located between the two tray handles (23). The first locking block (24) comprises a first locking block support table (241) and a first locking convex block (240).

4. The locking carousel for pallets according to claim 1, characterized in that, The right end of the first locking block support table (241) is provided with the first locking convex block (240). The right side of the first locking convex block (240) has an obliquely distributed first feature surface (240A1). The left side of the first locking convex block (240) has a vertically distributed second feature surface (240B1). The height of the first feature surface (240A1) gradually decreases from left to right. ​ 5. The locking carousel for pallets according to claim 4, characterized in that, The first locking block (24) has two characteristic surfaces: a first characteristic surface (240A1) and a second characteristic surface (240B1); The top height of the first characteristic surface (240A1) is greater than the top surface height of the first locking block support platform (241); The lowest position height of the first characteristic surface (240A1) is less than the top surface height of the first locking block support platform (241) and greater than the bottom surface height of the first locking block support platform (241); The top height of the second characteristic surface (240B1) is greater than the top surface height of the first locking block support platform (241); The top surface of the first locking protrusion (240) is a smooth plane, and the second characteristic surface (240B1) and the first characteristic surface (240A1) are respectively located on the left and right sides of the top surface of the first locking protrusion (240).

6. The locking carousel for pallets according to claim 1, characterized in that, The self-locking assembly (3) further comprises a spring (33); A vertical distribution spring (33) is arranged between the bottom right end of the second locking block (32) and the top right end of the pin shaft fixing plate (34); A vertical distribution first cylindrical protrusion (3210) is arranged at the middle of the bottom right end of the second locking block (32); A second cylindrical protrusion (341) is arranged at the middle of the top right end of the pin shaft fixing plate (34); The first cylindrical protrusion (3210) and the second cylindrical protrusion (341) are arranged in vertical correspondence; The first cylindrical protrusion (3210) and the second cylindrical protrusion (341) together form a cylindrical whole outside which is sleeved with a helical spring (33).

7. The locking carousel for pallets according to claim 1, characterized in that, The lower end of the second locking block (32) and the upper end of the pin shaft fixing plate (34) are hingedly connected through a pin shaft (35); A vertical distribution first support block (323) is arranged at the middle of the bottom surface of the second locking block (32); A longitudinal distribution first through hole (322) is arranged on the first support block (323); A vertical distribution second support block (340) is arranged on the front and back of the top left end of the pin shaft fixing plate (34); A longitudinal distribution second through hole (342) is arranged on each second support block (340); The pin shaft (35) longitudinally penetrates through the two second through holes (342) on the second support block (340) and the first through hole (322) on the first support block (323); The center points of the two second through holes (342) and the first through hole (322) are located on the same longitudinal center axis.

8. The locking carousel for pallets according to claim 1, characterized in that, The second locking block (32) comprises a second locking block support platform (321) and a second locking protrusion (320); The left end of the second locking protrusion (320) is provided with a second locking protrusion (320); An inclined distribution third characteristic surface (320A2) is arranged on the left side of the second locking protrusion (320); A vertical distribution fourth characteristic surface (320B2) is arranged on the right side of the second locking protrusion (320); The height of the third characteristic surface (320A2) gradually decreases from left to right.

9. The locking carousel for pallets according to claim 8, characterized in that, The top height of the third characteristic surface (320A2) is less than the top surface height of the second locking block support platform (321) and greater than the bottom surface height of the second locking block support platform (321). The lowest position height of the third characteristic surface (320A2) is less than the bottom surface height of the second locking block support platform (321); The top height of the fourth characteristic surface (320B2) is greater than the bottom surface height of the second locking block support platform (321); The bottom surface of the second locking block (320) is a smooth plane, and the third characteristic surface (320A2) and the fourth characteristic surface (320B2) are respectively located on the left and right sides of the bottom surface of the second locking block (320); And / or, The height of the central axis of the pin shaft (35) is lower than the height of the lowest position of the third characteristic surface (320A2) in the second locking block (32) of the self-locking assembly (3); And / or, When the fourth characteristic surface (320B2) in the second locking block (32) is in contact with the second characteristic surface (240B1) in the first locking block (24) as the transfer tray assembly (2) moves to the right, the left side surface of the second stop block (14) in the trolley assembly (1) is in close contact with the right side surface of the transfer tray (21) in the transfer tray assembly (2).

10. A battery transport tool, characterized by The locking turnover device comprises a transfer tray assembly and a trolley assembly. The top of the transfer tray (21) is provided with a plurality of single batteries.

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