BMS finished product discharging turnover skip car based on latent AGV

Abstract

The invention relates to the technical field of turnover skip cars, and discloses a BMS finished product discharging turnover skip car based on a latent AGV, the BMS finished product discharging turnover skip car comprises a skip car body, a plurality of trays are arranged in the skip car body in a sliding and penetrating mode, a cross-shaped scribed line is arranged on the bottom wall of the skip car body, and a two-dimensional code used for visual positioning of the external latent AGV is attached to the cross-shaped scribed line. The bottom wall of the skip car body is further provided with a butt joint pin shaft matched with a pin hole in an external hidden type AGV. Through the arrangement of the cross scribed line and the butt joint pin shaft, in the turnover process, the submarine AGV positions the specific position of the skip car body by recognizing the cross scribed line, after the submarine AGV jacking plate is lifted upwards, the butt joint pin shaft can be inserted into a pin hole in the submarine AGV jacking plate, and the butt joint pin shaft can be inserted into a pin hole in the butt joint pin shaft; compared with the prior art, the charging skip car has the advantages that the charging skip car body can be well prevented from toppling over in the turnover process, automatic operation in the BMS discharging process is achieved, and the charging skip car has the advantages of being high in automation degree and better in turnover process.

Description

Technical Field

[0001] The present invention relates to a BMS finished product unloading turnover vehicle based on a latent AGV, belonging to the technical field of turnover vehicles. Background Art

[0002] With the rapid development of new energy vehicles in recent years, demand for battery management systems (BMS)—systems used to ensure the safe operation of power batteries—has also increased. Currently, in the blanking process for finished BMS products, due to the high drop protection requirements of their internal components and the diverse product range, flexibility in turnover is particularly important. This requires both automated production and the ability to manually handle the placement of specialized models.

[0003] For this reason, in the prior art, during the turnover process of the BMS production process, the BMS is often stacked in a material box, and the material box is transported by a cart. For example, the invention patent application with Chinese patent application number CN202410507658.5 discloses an automatic loading and unloading vehicle for new energy battery frames, which sets a positioning frame in the loading area and the unloading area, and pushes one end of the vehicle body into the positioning frame for unloading and storing battery frames or taking out materials. The supporting mechanism of each layer is subjected to the gravity of the gravity block and rotates around the positioning support shaft as the axis, without affecting the unloading or taking out of the battery frame of the next layer, which can improve the efficiency of loading and unloading of battery frames. At the same time, by setting a guide wheel on the positioning frame and cooperating with the inclined design of both ends of the vehicle body, it is convenient for the operator to push the vehicle body into the guide positioning frame and use the positioning frame to position the vehicle body, thereby facilitating the vehicle body to store materials in the unloading area or take out materials in the loading area, and having good flexibility. However, it still needs to be pushed manually during use, that is, it still uses the method of people pushing carts to transport material boxes, which is not conducive to the automation and unmanned operation of the turnover process.

[0004] An AGV (Automated Guided Vehicle) is a type of automated transport equipment widely used in industrial production and logistics. Its low, flat design allows it to easily hide beneath specific shelves, carts, and other transported items. It is equipped with a running mechanism consisting of drive and guide wheels, as well as a navigation system for path identification, a control system, and a power system, enabling it to transport objects along a pre-defined path to a designated location. However, traditional carts lack the necessary positioning mechanisms for the AGV, making it difficult to precisely dock the AGV with the cart in most cases. Manual position control is still required to ensure accurate docking. Otherwise, the cart could easily tip over during transport, potentially affecting the products on board. This hinders the automation and unmanned operation of the BMS turnover process. Summary of the Invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides a BMS finished product unloading turnover vehicle based on a latent AGV.

[0006] The technical solutions of the present invention are as follows: A BMS finished product unloading turnover trolley based on a latent AGV includes a trolley body, a plurality of material trays are slidably inserted into the trolley body, a cross engraved line is provided on the bottom wall of the trolley body, and a QR code for visual positioning of an external latent AGV is affixed on the cross engraved line. A docking pin shaft is also provided on the bottom wall of the trolley body to adapt to the pin hole on the external latent AGV.

[0007] Furthermore, a first slide rail corresponding to the material tray is provided in the material cart body, and a second slide rail corresponding to the first slide rail is provided on the side wall of the material tray. The material tray is slidably connected to the first slide rail through the second slide rail to slide through the material cart body.

[0008] Furthermore, a seated magnet is fixedly provided on the rear wall of each of the material trays, a magnet fixing plate is fixedly provided on the rear wall of the material cart body, and an iron magnet is provided on the magnet fixing plate. The iron magnet and the seated magnet are arranged in a one-to-one correspondence. After the material tray is completely received into the material cart body, each seated magnet is attracted to its corresponding iron magnet.

[0009] Furthermore, a universal wheel is provided at the bottom of the trolley body, and a push handle is also provided on the rear wall of the trolley body.

[0010] Furthermore, the trolley body is also provided with a limiting mechanism for limiting the material tray from sliding outward, the limiting mechanism includes a sliding square shaft installed on one side wall of the trolley body by setting a connecting piece, the sliding square shaft slides through the connecting piece, a first clamping plate is provided on the shaft wall of the sliding square shaft, and a second clamping plate is provided on the side wall of the first clamping plate away from the sliding square shaft, which is arranged in a one-to-one correspondence with the material tray, each second clamping plate is arranged in contact with the front wall of the corresponding material tray, and a material passage space for the material tray to pass through is left between adjacent second clamping plates.

[0011] Furthermore, a latch hole is provided on the sliding square shaft, and a latch is also provided on the material cart body. The latch can be inserted into the latch hole after the position of the latch hole coincides with it. When the latch is inserted into the latch hole, each second clamping plate is arranged away from the corresponding material tray, so that the material tray can pass out of the material transfer space.

[0012] Furthermore, a square shaft handle is provided on the top of the sliding square shaft, and a limit plate is provided on the bottom of the sliding square shaft. The setting of the limit plate satisfies the requirement that the connecting piece cannot pass through. When the limit plate is set tightly against the connecting piece, the positions of the pin and the pin hole are overlapped.

[0013] Furthermore, a tension spring is provided on the trolley body, and the tension spring is vertically arranged. The bottom of the tension spring is fixedly connected to the trolley body by setting a fixing bolt. A connecting column is fixedly passed through the sliding square shaft, and the top of the tension spring is fixedly connected to the connecting column. When the tension spring is in normal state, each second clamping plate is arranged in contact with the front wall of the corresponding material tray.

[0014] Furthermore, the material cart body is also provided with a docking mechanism for docking with an external machine, and the docking mechanism includes a docking baffle, and a circular magnet is provided on the wall of the docking baffle close to the external machine side, and the circular magnet is used to engage with the docking electromagnet on the external machine.

[0015] Furthermore, the docking baffle is provided with symmetrically arranged long screws, with a buffer space left between the long screws on both sides, the long screw away from the circular iron-absorbing side is fixedly set on the docking baffle, and the long screw close to the circular iron-absorbing side is provided with a round nut column that is movably passed through the docking baffle, and the end of the round nut column close to the circular iron-absorbing side is fixedly connected to the circular iron-absorbing side, and anti-loosening nuts are fixedly provided on the long screws on both sides, and a compression spring is provided between the anti-loosening nuts on both sides. The compression spring is sleeved on the long screws on both sides and both ends are in contact with the anti-loosening nuts on the corresponding sides. The round nut column is also provided with symmetrically arranged adjustment gaskets, and the adjustment gaskets are provided on the column sections of the round nut column located inside and outside the docking baffle.

[0016] The present invention has the following beneficial effects: 1. The present invention sets a cross mark and a docking pin on the bottom wall of the material cart body, and affixes a QR code for visual positioning of an external latent AGV on the cross mark. During the turnover process, the latent AGV moves to the bottom of the material cart body, and locates the specific position of the material cart body by identifying the cross mark to find the position of the material cart body. Visual positioning is performed through the affixed QR code, so that the corresponding navigation path can be planned after obtaining the specific position of the material cart body. After the latent AGV lifting plate rises upward, the docking pin can be inserted into the pin hole on the latent AGV lifting plate, thereby connecting the material cart body to the latent AGV, which can effectively avoid the occurrence of tipping of the material cart body during the turnover process. Compared with the existing technology, the automatic operation of the BMS unloading process is realized, the manpower input is reduced, and it has the advantages of high degree of automation and smoother turnover process.

[0017] 2. The present invention provides a material tray for placing BMS products on the material cart body, and cooperates with a seat magnet, a magnet, and a limiting mechanism to limit the material tray. The double insurance structure can effectively prevent the material tray from accidentally sliding out during the turnover process, thereby isolating the BMS product from the outside world, improving the protection effect in the turnover process, and having the advantage of ensuring that the BMS product is not easily damaged.

[0018] 3. The present invention is provided with a docking mechanism for docking with an external machine. After the latent AGV transports the material cart body to the required position, the docking electromagnet on the external machine is attracted by the circular magnet. Then the latent AGV lowers the lifting plate to make the docking pin shaft leave the pin hole. At this time, the external machine can pull the material cart body to the required loading / unloading position by pulling the docking electromagnet, that is, the material cart body can be automatically operated to the material picking and placing position, which has the advantage of improving production flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the front structure of an embodiment of the present invention; Figure 2 Schematic diagram of the bottom structure of an embodiment of the present invention; Figure 3 It is a left side view of an embodiment of the present invention; Figure 4 Schematic diagram of the rear structure of an embodiment of the present invention; Figure 5 Schematic diagram of the structure of the magnet with a seat and the magnetic field when they are attracted to each other in an embodiment of the present invention; Figure 6 This is a structural diagram of a docking mechanism in an embodiment of the present invention; Figure 7 for Figure 1 A magnified view of point A in the figure; Figure 8 for Figure 1 Enlarged view of point B in FIG. Figure 9 for Figure 1 Enlarged view of point C in the figure.

[0020] The reference numerals in the figures are as follows: 1. Material cart body; 2. Material tray; 3. Cross mark; 4. Docking pin; 5. First slide rail; 6. Second slide rail; 7. Magnet with seat; 8. Magnet fixing plate; 9. Magnet; 10. Universal wheel; 11. Push handle; 12. Restriction mechanism; 1201. Connecting member; 1202. Sliding square shaft; 1203. First clamping plate; 1204. Second clamping plate; 1205. Feeding space; 1206. Latch; 1207. Square shaft handle; 1208. Limiting plate; 1209. Tension spring; 1210. Connecting column; 13. Docking mechanism; 1301. Docking baffle; 1302. Round magnet; 1303. Long screw; 1304. Buffer space; 1305. Round nut column; 1306. Anti-loosening nut; 1307. Compression spring; 1308. Adjusting gasket. DETAILED DESCRIPTION

[0021] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Example: Please refer to Figures 1 to 9 This embodiment provides a BMS finished product unloading turnover vehicle based on a latent AGV, comprising a vehicle body 1 and a supporting external latent AGV. The external latent AGV can be a Beaver unmanned intelligent AGV, or a similar latent automatic guided vehicle from another brand. Multiple trays 2 are slidably disposed within the vehicle body 1. The trays 2 are evenly distributed longitudinally within the vehicle body 1. The specific number of trays 2 can be set based on actual conditions. A first slide rail 5 corresponding to the material tray 2 is provided in the material cart body 1. Specifically, the first slide rail 5 is symmetrically arranged in the material cart body 1 and distributed on the inner side walls on both sides of the material cart body 1. Two first slide rails 5 distributed at the same horizontal height correspond to one material tray 2. Second slide rails 6 corresponding to the first slide rail 5 on the corresponding side are provided on the side walls of both sides of the material tray 2. The second slide rails 6 on both sides are slidably connected to the first slide rail 5 on the corresponding side. The material tray 2 is slidably connected to the first slide rail 5 through the second slide rail 6 to slide through the material cart body 1.

[0023] A cross mark 3 is provided on the bottom wall of the material cart body 1. The midpoint of the cross mark 3 is the center point of the bottom wall of the material cart body 1. A QR code for visual positioning of an external latent AGV is affixed to the cross mark 3. The information recorded on the QR code is the specific location of the material cart body 1 in the factory area, so that the external latent AGV can identify it. A docking pin shaft 4 is also provided on the bottom wall of the material cart body 1, which is adapted to the pin hole on the lifting plate of the external latent AGV. Through the above-mentioned arrangement, when the turnover process of the material cart body 1 is carried out, the material cart body 1 will be placed at the corresponding position in the factory under the action of a forklift. After that, the external latent AGV starts to work. The external latent AGV moves to the bottom position of the material cart body 1 according to its own preset navigation, and then locates the specific position of the material cart body 1 by identifying the cross mark 3. After finding the position of the material cart body 1, it is aligned. The external latent AGV can also perform visual positioning by identifying the QR code affixed, so that after obtaining the specific position of the material cart body 1, it can plan the corresponding navigation path according to its own set program. After the external latent AGV aligns the material cart body 1, the lifting plate in the external latent AGV automatically rises upward. During this process, the docking pin shaft 4 can be inserted into the pin hole on the lifting plate of the external latent AGV, thereby connecting the material cart body 1 to the external latent AGV, which can well avoid the occurrence of situations such as tipping over of the material cart body 1 during the turnover process. After this, the external latent AGV can move according to the navigation path planned by itself, so as to move the material cart body 1, thereby carrying out the turnover process of the material cart body 1.

[0024] To facilitate the use of the operator, four universal wheels 10 distributed in a rectangular shape are provided at the bottom of the material cart body 1, and a pushing handle 11 is provided on the rear wall of the material cart body 1. The setting of the universal wheel 10 facilitates the movement of the material cart body 1, and the setting of the pushing handle 11 facilitates the operator to easily push the material cart body 1 with the help of the pushing handle 11 when needed.

[0025] To avoid the situation that the tray 2 accidentally slides out during the turnover process, in this embodiment, a pedestal magnet 7 is fixedly arranged on the rear wall of each tray 2, and a magnet fixing plate 8 is also fixedly arranged on the rear wall of the trolley body 1. The magnet fixing plate 8 is arranged in a "U" - shaped structure. The number of magnet fixing plates 8 is set to satisfy that one magnet fixing plate 8 corresponds to two pedestal magnets 7. On the rear wall of the trolley body 1, a corresponding number of fixing rods are provided for the installation of the magnet fixing plate 8. Each magnet fixing plate 8 is provided with two iron absorbers 9 arranged vertically. The iron absorbers 9 and the pedestal magnets 7 are arranged in one - to - one correspondence. After the tray 2 is completely received into the trolley body 1, each pedestal magnet 7 is attracted to its corresponding iron absorber 9, so as to fix the tray 2, and can well avoid the situation that the tray 2 accidentally slides out during the turnover process, thereby ensuring that the BMS finished products in the tray 2 are not easily damaged and other phenomena occur.

[0026] In order to further prevent the material tray 2 from accidentally sliding out during the turnover process, in this embodiment, a limiting mechanism 12 for limiting the material tray 2 from sliding out is further provided on the left side outer wall of the material cart body 1. The limiting mechanism 12 includes a sliding square shaft 1202 installed on the left side outer wall of the material cart body 1 by providing a connecting member 1201. The connecting member 1201 is in a "J"-shaped structure. There are three connecting members 1201. The three connecting members 1201 are longitudinally distributed on the left side outer wall of the material cart body 1. The sliding square shaft 1202 slides through the raised portion in the middle of the three connecting members 1201 to slide through the three connecting members 1201. A first clamping plate 1203 is provided on the shaft wall of the sliding square shaft 1202. There are three first clamping plates 1203. There is a gap between adjacent first clamping plates 1203. The three connecting parts 1201 are all within the corresponding gap. Each first clamping plate 1203 will contact the connecting part 1201 at the corresponding position to limit the sliding of the sliding square shaft 1202. Therefore, the remaining gap is the sliding stroke of the sliding square shaft 1202. The specific length of the gap can be set according to actual conditions. A second clamping plate 1204 is provided on the side wall of each of the three first clamping plates 1203 away from the sliding square shaft 1202. The total number of the second clamping plates 1204 is the same as the total number of the material trays 2. The distribution of the second clamping plates 1204 on the trolley body 1 is arranged in a one-to-one correspondence with the material trays 2. Each second clamping plate 1204 is arranged in abutment with the front wall of the corresponding material tray 2. A material passage space 1205 for the material tray 2 to pass through is reserved between adjacent second clamping plates 1204. When each second clamping plate 1204 is in abutment with the front wall of the corresponding material tray 2, the material tray 2 will not be able to slide out of the trolley body 1 under the restriction of the second clamping plate 1204, which can further fix the material tray 2, so as to better prevent the material tray 2 from accidentally sliding out during the turnover process, thereby better ensuring that the BMS finished product in the material tray 2 is not easily damaged. When each second clamping plate 1204 abuts against the front wall of the corresponding material tray 2, the three first clamping plates 1203 all abut against the connecting member 1201 at the lower position thereof, so as to limit the position of the sliding square shaft 1202 accordingly.

[0027] When the material tray 2 needs to slide out from the material cart body 1, this can be achieved by setting the following structure: a latch 1206 hole is also provided on the sliding square shaft 1202, and a latch 1206 is also provided on the material cart body 1. The latch 1206 can be inserted into the latch 1206 hole after the position of the latch 1206 hole coincides with the position of the latch 1206 hole. When the latch 1206 is inserted into the latch 1206 hole, each second clamping plate 1204 is set away from the corresponding material tray 2, so that the material tray 2 can pass out from the material feeding space 1205. A square shaft handle 1207 is also provided on the top of the sliding square shaft 1202, and a limit plate 1208 is also provided on the bottom of the sliding square shaft 1202. The setting of the limit plate 1208 satisfies the requirement that the limit plate 1208 cannot pass through the connecting piece 1201. When the limit plate 1208 is set in close contact with the bottom connecting piece 1201, the position of the latch 1206 and the latch 1206 hole coincide with each other. Through the above-mentioned arrangement, when the material tray 2 needs to be taken out from the material cart body 1, the sliding square shaft 1202 is pulled upward by using the square shaft handle 1207, so that the limit plate 1208 is tightly set against the bottom connecting piece 1201, and then the pin 1206 is inserted into the pin 1206 hole. At this time, the position of the sliding square shaft 1202 can be fixed. The sliding square shaft 1202 in this position will cause the three first clamping plates 1203 to move upward, so that each second clamping plate 1204 will leave the corresponding material tray 2. At this time, the material tray 2 can pass out from the corresponding material transfer space 1205 to facilitate the operator to take / put the material.

[0028] In order to facilitate the resetting of the sliding square shaft 1202, in this embodiment, a tension spring 1209 is also provided on the trolley body 1. The tension spring 1209 is vertically arranged, and the bottom of the tension spring 1209 is fixedly connected to the trolley body 1 by setting a fixing bolt. The top position of the sliding square shaft 1202 is fixedly penetrated by a horizontally arranged connecting column 1210, and the top of the tension spring 1209 is fixedly connected to one side end of the connecting column 1210. When the tension spring 1209 is in normal state, each second clamping plate 1204 is arranged to abut the front wall of the corresponding material tray 2. Through the above-mentioned setting, when the sliding square shaft 1202 is pulled upward to allow the material tray 2 to slide out of the material cart body 1, the tension spring 1209 will be stretched under the action of the connecting column 1210 to generate elastic potential energy. When the material taking / putting operation is completed and the material tray 2 needs to be restricted again, the operator loosens the sliding square shaft 1202, and the sliding square shaft 1202 can be automatically reset with the help of its own weight and the reset force of the tension spring 1209.

[0029] To further improve the automation of the turnover process of the skip body 1, in this embodiment, a docking mechanism 13 for docking with an external machine is further provided on the skip body 1. The number of the docking mechanisms 13 is two, and the docking mechanisms 13 are distributed at the bottom position on the side wall of the skip body 1 close to the external machine. The docking mechanism 13 includes a docking baffle 1301 arranged in a "C" - shaped structure. A circular electromagnet 1302 is arranged on the plate wall of the docking baffle 1301 close to the external machine, and the circular electromagnet 1302 is used to attract and combine with the docking electromagnet on the external machine. Through the foregoing arrangement, after the external latent AGV transports the skip body 1 to the required position, the docking electromagnet on the external machine attracts and combines with the circular electromagnet 1302. Then, the latent AGV lowers the lifting plate, making the docking pin shaft 4 leave the pin hole. At this time, the external machine can pull the skip body 1 to the required loading / unloading position by the pull of the docking electromagnet. In actual use, the specific number and distribution of the docking mechanisms 13 can be selected and set according to the distribution of the docking electromagnets on the actual machine.

[0030] Since there may be some impacts during the docking process between the skip body 1 and the external machine, in this embodiment, long screw rods 1303 arranged symmetrically left and right are further provided inside the docking baffle 1301. A buffer space 1304 is left between the two long screw rods 1303. The long screw rod 1303 on the side far from the circular electromagnet 1302 is fixedly arranged on the docking baffle 1301. A round nut column 1305 is arranged on the long screw rod 1303 close to the circular electromagnet 1302 and penetrates through the docking baffle 1301 movably. The end of the round nut column 1305 close to the circular electromagnet 1302 is fixedly connected to the circular electromagnet 1302. Anti - loosening nuts 1306 are fixedly arranged on both long screw rods 1303. A compression spring 1307 is arranged between the two anti - loosening nuts 1306. The compression spring 1307 is sleeved on the two long screw rods 1303 and both ends are abutted against the corresponding anti - loosening nuts 1306. Symmetrically arranged adjusting washers 1308 are also provided on the round nut column 1305. The adjusting washers 1308 are arranged on both the column sections of the round nut column 1305 inside and outside the docking baffle 1301. The number of the adjusting washers 1308 can be set according to the actual situation to adjust the corresponding telescopic buffer range. Through the foregoing arrangement, when the circular electromagnet 1302 attracts and combines with the docking electromagnet on the external machine, the generated force will cause the circular electromagnet 1302 to exert a thrust on the round nut column 1305, so that the round nut column 1305 moves in the direction away from the circular electromagnet 1302, and squeezes the corresponding long screw rod 1303 by passing through the docking baffle 1301. After being pressed, the long screw rod 1303 makes a corresponding movement and带动 the anti - loosening nut 1306 to move. The anti - loosening nut 1306 squeezes the compression spring 1307, so as to achieve force unloading and buffering during the docking process.

[0031] When the trolley body 1 is docked with an external machine, an additional extended structure can be provided on the second clamping plate 1204 at the bottom. This extended structure can be docked with the corresponding lifting mechanism on the external machine. The lifting mechanism can lift the sliding square shaft 1202 by lifting this extended structure, thereby unlocking the material tray 2, to further facilitate the use of the operator.

[0032] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A BMS finished product unloading turnover trolley based on a latent AGV, comprising a trolley body (1), wherein a plurality of material trays (2) are slidably provided in the trolley body (1), and characterized in that: A cross mark (3) is provided on the bottom wall of the material cart body (1), and a QR code for visual positioning of an external latent AGV is affixed to the cross mark (3). A docking pin shaft (4) is also provided on the bottom wall of the material cart body (1) and is adapted to the pin hole on the external latent AGV.

2. The BMS finished product unloading turnover vehicle based on the latent AGV according to claim 1 is characterized by: A first slide rail (5) corresponding to the material tray (2) is provided in the material trolley body (1), and a second slide rail (6) corresponding to the first slide rail (5) is provided on the side wall of the material tray (2). The material tray (2) is slidably connected to the first slide rail (5) through the second slide rail (6) so as to be slidably inserted into the material trolley body (1).

3. The BMS finished product unloading turnover vehicle based on the latent AGV according to claim 2 is characterized by: A seated magnet (7) is fixedly provided on the rear wall of each material tray (2), a magnet fixing plate (8) is fixedly provided on the rear wall of the material cart body (1), an iron magnet (9) is provided on the magnet fixing plate (8), and the iron magnet (9) and the seated magnet (7) are arranged in a one-to-one correspondence. After the material tray (2) is completely received into the material cart body (1), each seated magnet (7) is attracted to its corresponding iron magnet (9).

4. The BMS finished product unloading turnover vehicle based on the latent AGV according to claim 1 is characterized by: A universal wheel (10) is provided at the bottom of the trolley body (1), and a push handle (11) is also provided on the rear wall of the trolley body (1).

5. The BMS finished product unloading turnover vehicle based on the latent AGV according to claim 1 is characterized in that: The material cart body (1) is further provided with a limiting mechanism (12) for limiting the material tray (2) from sliding outward. The limiting mechanism (12) comprises a sliding square shaft (1202) installed on one side wall of the material cart body (1) by means of a connecting member (1201). The sliding square shaft (1202) slides through the connecting member (1201). A first clamping plate (1203) is provided on the shaft wall of the sliding square shaft (1202). A second clamping plate (1204) corresponding to the material tray (2) is provided on the side wall of the first clamping plate (1203) away from the sliding square shaft (1202). Each second clamping plate (1204) is arranged in contact with the front wall of the corresponding material tray (2). A material passage space (1205) for the material tray (2) to pass through is reserved between adjacent second clamping plates (1204).

6. The BMS finished product unloading turnover vehicle based on the latent AGV according to claim 5 is characterized by: A latch (1206) hole is also provided on the sliding square shaft (1202), and a latch (1206) is also provided on the material cart body (1). The latch (1206) can be inserted into the latch (1206) hole after the position of the latch (1206) hole coincides with the latch (1206) hole. When the latch (1206) is inserted into the latch (1206) hole, each second clamping plate (1204) is arranged away from the corresponding material tray (2), so that the material tray (2) can pass out from the material transfer space (1205).

7. The BMS finished product unloading turnover vehicle based on the latent AGV according to claim 6 is characterized by: A square shaft handle (1207) is further provided at the top of the sliding square shaft (1202), and a limit plate (1208) is further provided at the bottom of the sliding square shaft (1202). The limit plate (1208) is arranged so as to prevent the connecting member (1201) from passing through. When the limit plate (1208) is arranged in close contact with the connecting member (1201), the position of the latch (1206) and the position of the latch (1206) hole are arranged to overlap.

8. The BMS finished product unloading turnover vehicle based on the latent AGV according to claim 6 is characterized by: A tension spring (1209) is provided on the material trolley body (1), and the tension spring (1209) is vertically arranged. The bottom of the tension spring (1209) is fixedly connected to the material trolley body (1) by setting a fixing bolt. A connecting column (1210) is fixedly passed through the sliding square shaft (1202), and the top of the tension spring (1209) is fixedly connected to the connecting column (1210). When the tension spring (1209) is in a normal state, each second clamping plate (1204) is arranged to abut against the front wall of the corresponding material tray (2).

9. The BMS finished product unloading turnover vehicle of a latent AGV according to claim 1, characterized in that: The material cart body (1) is also provided with a docking mechanism (13) for docking with an external machine. The docking mechanism (13) includes a docking baffle (1301). A circular magnet (1302) is provided on the wall of the docking baffle (1301) close to the external machine. The circular magnet (1302) is used to be attracted by the docking electromagnet on the external machine.

10. The BMS finished product unloading turnover vehicle of the latent AGV according to claim 9, characterized in that: The docking baffle (1301) is provided with symmetrically arranged long screws (1303), with a buffer space (1304) left between the long screws (1303) on both sides. The long screw (1303) on the side away from the circular magnet (1302) is fixedly arranged on the docking baffle (1301), and the long screw (1303) on the side close to the circular magnet (1302) is provided with a round nut column (1305) that is movably arranged to pass through the docking baffle (1301). The end of the round nut column (1305) on the side close to the circular magnet (1302) is fixedly connected to the circular magnet (1302). Together, anti-loosening nuts (1306) are fixedly provided on the long screw rods (1303) on both sides, and a compression spring (1307) is provided between the anti-loosening nuts (1306) on both sides. The compression spring (1307) is sleeved on the long screw rods (1303) on both sides, and both ends are in contact with the anti-loosening nuts (1306) on the corresponding side. The round nut column (1305) is also provided with a symmetrically arranged adjustment gasket (1308). The adjustment gasket (1308) is provided on the column section of the round nut column (1305) located inside the docking baffle (1301) and outside the docking baffle (1301).

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