A movable automatic stacking trolley

Abstract

The present invention discloses a movable automatic stacking trolley, including a lifting vehicle, and a clamping mechanism for clamping and moving a battery tray is arranged on the lifting vehicle; the clamping mechanism includes clamping units arranged on both sides of the battery tray, a fixing plate for fixing the two clamping units, and a driving mechanism for driving the fixing plate to move, and the driving mechanism is fixed on the lifting vehicle; the clamping unit includes a rotating plate, a hook block, a wedge block, a fixing shaft and a torsion spring. One end of the rotating plate is fixedly connected with the hook block, and the other end is rotatably connected with the fixing plate. A groove for placing the torsion spring is formed on the wedge block. The fixing shaft passes through both ends of the wedge block and the torsion spring and is fixedly connected with the hook block. Both ends of the torsion spring are respectively abutted against the wedge block and the hook block; the mechanized handling of the battery tray is realized by this device, the manual consumption is reduced, and the personal safety is further guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of stacking trolleys, and particularly to a movable automatic stacking trolley. Background Art

[0002] During the production process of new energy batteries, it is often necessary to remove the trays carrying batteries from the production line for transportation, testing, or abnormal handling. The weight of a full-frame battery can reach 80 kg, which is difficult for a single person to move. Usually, two people are required to cooperate to move the battery off the conveyor line and stack it at the same time. Moreover, the battery cells are usually charged, and there is a risk of short circuit and fire during manual handling. Summary of the Invention

[0003] Based on the technical problems existing in the background art, the present invention proposes a movable automatic stacking trolley, which realizes the mechanized handling of battery trays, reduces manual labor, and further improves personnel safety.

[0004] A movable automatic stacking trolley proposed by the present invention includes a lifting vehicle, and a clamping mechanism for clamping and moving the battery tray is arranged on the lifting vehicle; the clamping mechanism includes clamping units arranged on both sides of the battery tray, a fixing plate for fixing the two clamping units, and a driving mechanism for driving the fixing plate to move, and the driving mechanism is fixed on the lifting vehicle.

[0005] Further, the clamping unit includes a rotating plate, a hook block, a wedge block, a fixed shaft, and a torsion spring. One end of the rotating plate is fixedly connected to the hook block, and the other end is rotatably connected to the fixing plate. A groove for placing the torsion spring is formed on the wedge block. The fixed shaft passes through the two ends of the wedge block and the torsion spring and is fixedly connected to the hook block. The two ends of the torsion spring are respectively abutted against the wedge block and the hook block.

[0006] Further, two limiting mechanisms for limiting the rotation of the rotating plate to the in-place position are fixed on the fixing plate. The two limiting mechanisms are respectively fixed on the upper and lower surfaces of the fixing plate. The limiting mechanism includes a bolt, a spring, and a fixed seat fixed on the fixing plate. One end of the bolt passes through the fixed seat and the other end is arranged at a certain gap from the rotating plate. The spring passes through one end of the bolt, abuts against the end of the bolt, and the other end abuts against the fixed seat.

[0007] Further, the lifting vehicle includes a bottom plate and two corresponding columns. The two columns are fixedly arranged on the bottom plate, and the space formed by the bottom plate and the two columns is used for loading the battery tray.

[0008] Further, the driving mechanism includes lifting slide rails respectively fixed on the opposite sides of the two columns, sliders slidably connected to the lifting slide rails, and a motor assembly for driving the sliders to move. The two ends of the fixing plate are respectively fixedly connected to the sliders.

[0009] Further, the motor assembly includes a transmission shaft and a stepper motor for driving the transmission shaft to rotate. Both ends of the transmission shaft are rotatably connected to the top ends of the columns. First synchronous pulleys are sleeved on both axial sides of the transmission shaft. Second synchronous pulleys are arranged on the opposite sides of the lower halves of the two columns. The first synchronous pulleys and the second synchronous pulleys are connected by synchronous belts. The two sliders are fixedly connected to the two synchronous belts at corresponding positions.

[0010] Further, the moving direction of the synchronous belt is parallel to the axis of the lifting slide rail.

[0011] Further, a conveying mechanism for conveying the battery tray is arranged on the upper surface of the bottom plate. The conveying mechanism includes a plurality of rollers arranged in sequence, and the axes of the rollers are parallel to each other.

[0012] Further, first photoelectric switches for detecting the movement of the battery tray in place are arranged at both ends in the conveying direction of the conveying mechanism.

[0013] Further, the axis of the roller is perpendicular to the moving direction of the battery tray.

[0014] The advantages of a movable automatic stacking trolley provided by the present invention are as follows: In the structure of the present invention, a movable automatic stacking trolley is provided. By adjusting the height of the conveying mechanism to be consistent with the height of the logistics line through the lifting vehicle, the battery tray can be freely moved to any import and export on the logistics line and docked with the logistics line, saving manual handling and improving the safety of the battery tray during transfer and the safety of workers at the same time; the clamping unit is driven by the driving mechanism to move up and down, and the battery tray is clamped up and down to realize the stacking and unstacking of the battery tray, so as to improve the utilization efficiency of the lifting vehicle; through the setting of the wedge block, a purely mechanized operation of automatically unhooking the battery tray is realized, reducing the number of personnel used, reducing the labor intensity of workers, and at the same time reducing the risk of battery overturning and short circuit caused by personnel handling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present invention;

[0016] Figure 2 is a schematic structural diagram of the driving mechanism on the lifting vehicle;

[0017] Figure 3 is a schematic structural diagram of the limiting mechanism on the fixing plate;

[0018] Figure 4 is a schematic structural diagram of the clamping unit;

[0019] Figure 5 is a schematic structural diagram of the connection between the hook block and the wedge block;

[0020] Among them, 1 - lifting vehicle, 2 - clamping mechanism, 3 - conveying mechanism, 4 - battery tray, 11 - bottom plate, 12 - column, 21 - clamping unit, 22 - fixing plate, 23 - driving mechanism, 24 - limiting mechanism, 31 - roller, 211 - rotating plate, 212 - hook block, 213 - wedge block, 214 - fixed shaft, 215 - torsion spring, 216 - rotating shaft, 231 - lifting slide rail, 232 - slider, 233 - motor assembly, 234 - transmission shaft, 235 - stepping motor, 236 - second synchronous pulley, 237 - synchronous belt, 238 - first synchronous pulley, 241 - bolt, 242 - fixed seat, 243 - spring. Detailed implementation mode

[0021] Next, the technical solutions of the present invention will be described in detail through specific embodiments. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementations disclosed below.

[0022] As Figures 1 to 5 shown, a movable automatic stacking trolley proposed by the present invention includes a lifting vehicle 1, and a clamping mechanism 2 for clamping and moving the battery tray 4 is arranged on the lifting vehicle 1; the clamping mechanism 2 includes clamping units 21 arranged on both sides of the battery tray 4, a fixing plate 22 for fixing the two clamping units 21, and a driving mechanism 23 for driving the fixing plate 22 to move, and the driving mechanism 23 is fixed on the lifting vehicle 1.

[0023] The lifting vehicle 1 is used to load the battery tray 4 coming down from the logistics line, saving manual handling and improving the safety of the battery tray 4 itself and the safety of workers during the transfer and transportation. The clamping unit 21 is driven by the driving mechanism 23 to move up and down, and clamps the battery tray 4 up and down to realize the stacking and unstacking of the battery tray 4, so as to improve the utilization efficiency of the lifting vehicle 1.

[0024] When there is a need to stack and unstack 3 or more battery trays 4, in one way: the battery trays 4 already on the lifting vehicle 1 are fixed in pairs (adjacent battery trays 4 are fixed to each other), and the clamping mechanism 2 always clamps the topmost battery tray 4; in another way: the clamping mechanism 2 always clamps the bottommost battery tray 4, and at this time, the length of the clamping unit 21 needs to be reasonably extended.

[0025] Further, the clamping unit 21 includes a rotating plate 211, a hook block 212, a wedge block 213, a fixed shaft 214 and a torsion spring 215. One end of the rotating plate 211 is fixedly connected to the hook block 212, and the other end is rotatably connected to the fixed plate 22. A groove for placing the torsion spring 215 is formed on the wedge block 213. The fixed shaft 214 passes through both ends of the wedge block 213 and the torsion spring 215 and is fixedly connected to the hook block 212. Both ends of the torsion spring 215 are respectively abutted against the wedge block 213 and the hook block 212.

[0026] The wedge block 213 can rotate on the hook block 212 around the fixed shaft 214. Among them, the hook block 212 is arranged in an L shape. Under the action of the torsion spring 215, the wedge block 213 moves towards the outside of the L-shaped hook block 212. Therefore, the reset position of the wedge block 213 is to incline towards the outside of the hook block 212. In appearance, the extended end of the wedge block 213 that inclines towards the outside exceeds the bottom extended end of the L shape of the hook block 212.

[0027] Therefore, when the clamping unit 21 moves downward with the fixed plate 22 to the relative two sides of the battery tray 4, the wedge block 213 and the rotating plate 211 abut against the battery tray 4 and move downward. When the hook block 212 moves to the hand hole of the battery tray 4, due to the lack of abutting force, the hook end of the hook block 212 will be caught in the hand hole of the battery tray 4. At this time, the clamping of the battery tray 4 by the clamping unit 21 is completed. Then the clamping unit 21 moves upward with the fixed plate 22, and the upward movement of the current battery tray 4 can be completed, facilitating the entry of the next battery tray 4 into the lifting vehicle 1.

[0028] When the stacking of the current battery tray 4 is completed, it is necessary to extract the hook block 212 from the battery tray 4. At this time, the clamping unit 21 can continue to lower the hook block 212 and the wedge block 213 continues to lower. When the wedge block 213 is not in contact with the battery tray 4, the wedge block 213 will be caught in the hand hole of the battery tray 4. At this time, the clamping unit 21 moves upward. According to the setting of the inclined surface of the wedge block 213 and the setting of the rotating plate 211, the rotating plate 211 rotates outward along the inclined surface of the wedge block 213. As the clamping unit 21 moves upward, both the hook block 212 and the wedge block 213 return to the state of abutting against the battery tray 4. At this time, both the hook block 212 and the wedge block 213 directly rise as the rotating plate 211 rises, completing the decoupling operation after clamping the battery tray 4.

[0029] Among them, the rotating plate 211 can be a plate with a fixed length or a telescopic plate, which can be selected according to the actual use process.

[0030] For the rotation of the rotating plate 211, it is necessary to limit the rotation of the rotating plate 211 to avoid the position uncertainty of the hook block 212. Specifically, two limiting mechanisms 24 for limiting the rotation of the rotating plate 211 to the in-place position are fixed on the fixing plate 22. The two limiting mechanisms 24 are respectively fixed on the upper and lower surfaces of the fixing plate 22. The limiting mechanism 24 includes a bolt 241, a spring 243 and a fixing seat 242 fixed on the fixing plate 22. One end of the bolt 241 passes through the fixing seat 242 and the other end is arranged at a certain gap from the rotating plate 211. The spring 243 passes through one end of the bolt 241 and abuts against the end of the bolt 241, and the other end abuts against the fixing seat 242.

[0031] The rotating plate 211 can be rotatably connected to the fixing plate 22 through a rotating shaft 216. The rotating shaft 216 passes through the fixing plate 22. The rotating plate 211 is limited by the upper and lower two limiting mechanisms 24 to realize the limit of the rotating plate 211 in the clockwise and counterclockwise directions. Among them, the spring 243 can be a compression spring, and its function is to maintain the elastic stability of the bolt 241. After the bolt 241 passes through the fixing seat 242, it can be fixed by a nut, and there is a clearance fit between the bolt 241 and the fixing seat 242. Finally, the rotation limit of the rotating plate 211 is realized to better realize the effective clamping and decoupling of the battery tray 4.

[0032] Further, the lifting vehicle 1 includes a bottom plate 11 and two correspondingly arranged columns 12. The two columns 12 are fixedly arranged on the bottom plate 11. The space formed by the bottom plate 11 and the two columns 12 is used to load the battery tray 4. The lifting vehicle 1 can directly adopt an existing hydraulic lifting trolley.

[0033] Further, the driving mechanism 23 includes lifting slide rails 231 respectively fixed on the opposite sides of the two columns 12, sliders 232 slidably connected to the lifting slide rails 231, and a motor assembly 233 for driving the sliders 232 to move. The two ends of the fixing plate 22 are respectively fixedly connected to the sliders 232. The motor assembly 233 includes a transmission shaft 234 and a stepping motor 235 for driving the transmission shaft 234 to rotate. The two ends of the transmission shaft 234 are respectively rotatably connected to the tops of the columns 12. The first synchronous pulleys 238 are sleeved on both axial sides of the transmission shaft 234. The second synchronous pulleys 236 are arranged on the opposite sides of the lower half parts of the two columns 12. The first synchronous pulleys 238 and the second synchronous pulleys 236 are connected by a synchronous belt 237. The two sliders 232 are fixedly connected to the two synchronous belts 237 at the corresponding positions. Among them, the stepping motor 235 and the transmission shaft 234 are connected by a coupling.

[0034] In this application, the fixing plate 22 can adopt a cross-shaped plate. The two ends of one horizontal plate are used to fix the rotating plate 211, and the two ends of the other vertical plate are connected to the sliders 233 at the corresponding positions to realize the up and down movement of the fixing plate 22.

[0035] The movement of the slider 233 is achieved by the stepper motor 235 driving the transmission shaft 234 to rotate, which drives the synchronous belts 237 on both sides to rotate, so as to realize the movement of the slider 232. At the same time, in order to stabilize the movement direction of the slider 232, the slider 232 moves along the lifting slide rail 231, where the movement direction of the synchronous belt 237 is parallel to the axial direction of the lifting slide rail 231.

[0036] Further, in order to facilitate the battery tray 4 to be more conveniently transported onto the lift truck 1, specifically: a conveying mechanism 3 for conveying the battery tray 4 is provided on the upper surface of the bottom plate 11. The conveying mechanism 3 includes a plurality of rollers 31 arranged in sequence, and the axes of the rollers 31 are parallel to each other. The axial direction of the rollers 31 is perpendicular to the movement direction of the battery tray 4.

[0037] The battery tray 4 can be transported from one side of the lift truck 1 to the other side through the conveying mechanism 3, saving the labor consumption of manual handling. At the same time, in order to facilitate the operator to know whether the current battery tray 4 has moved in place on the lift truck 1, first photoelectric switches for detecting the movement in place of the battery tray 4 are provided at both ends of the conveying direction of the conveying mechanism 3. When the first photoelectric switch detects that the battery tray 4 has moved in place, it can remind the operator that the current battery tray 4 has moved in place by means of a buzzer or voice reminder.

[0038] Working process: During use, manually push the lift truck 1 to dock with the logistics line, operate the lift button on the lift truck 1 to make the height of the conveying mechanism 3 the same as that of the logistics line, push the battery tray 4 on the logistics line onto the conveying mechanism 3 of the lift truck 1 in place, start the stepper motor 235 to rotate forward, lower the clamping unit 21 in place, the hook block 212 automatically hooks the battery tray 4, then the stepper motor 235 rotates in reverse, raises the clamping unit 21, and the space between the raised battery tray 4 and the conveying mechanism 3 is used to dock with the next battery tray 4 on the logistics line. By adjusting the forward / reverse rotation of the stepper motor 235, the stacking of two battery trays 4 is completed, and then control the stepper motor 235 to rotate in reverse to drive the clamping unit 21 to move upward to the reset position.

[0039] In the hand hole of the battery tray 4 from which the hook block 212 is disengaged, specifically: after the stacking of two battery trays 4, continue to control the stepper motor 235 to rotate forward, so that the clamping unit 21 continues to move downward. After the wedge block 213 overruns, the wedge block 213 will be inserted into the hand hole of the battery tray 4. At this time, control the stepper motor 235 to rotate in reverse. Due to the connection relationship between the wedge block 213 and the hand hole, the hook block 212 cannot hook the battery tray 4. Combined with the inclined surface setting at the connection of the wedge block 213 and the hand hole, the entire clamping unit 21 moves upward to achieve the purpose of automatic unlocking. The stacked battery trays are pushed to the corresponding destination positions; the subsequent unstacking and stacking actions are the same.

[0040] Therefore, the present invention has the following advantages: (1) By adjusting the height of the conveying mechanism 3 to be consistent with the height of the logistics line through the lift truck 1, the battery tray 4 can be freely moved to any import and export on the logistics line and docked with the logistics line; (2) By driving the synchronous belts 237 on both sides of the column 12 through the stepping motor, the stable up and down movement of the clamping unit 21 and the balance of the movement after clamping the battery tray 4 are realized, providing a basis for accurately stacking two battery trays; (3) Through the setting of the wedge block 213, the pure mechanized operation of the automatic decoupling of the battery tray 44 is realized, reducing the number of personnel used, reducing the labor intensity of workers, and at the same time reducing the risk of battery overturning and short circuit caused by manual handling.

[0041] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A movable automatic stacking trolley, comprising a lifting vehicle (1), characterized in that, a clamping mechanism (2) for clamping and moving a battery tray (4) is arranged on the lifting vehicle (1); The clamping mechanism (2) includes clamping units (21) arranged on both sides of the battery tray (4), a fixing plate (22) for fixing the two clamping units (21), and a driving mechanism (23) for driving the fixing plate (22) to move. The driving mechanism (23) is fixed on the lifting vehicle (1); The clamping unit (21) includes a rotating plate (211), a hook block (212), a wedge block (213), a fixed shaft (214) and a torsion spring (215). One end of the rotating plate (211) is fixedly connected to the hook block (212), and the other end is rotatably connected to the fixing plate (22). A groove for placing the torsion spring (215) is formed on the wedge block (213). The fixed shaft (214) passes through the two ends of the wedge block (213) and the torsion spring (215) and is fixedly connected to the hook block (212). The two ends of the torsion spring (215) are respectively abutted against the wedge block (213) and the hook block (212); The wedge block (213) rotates on the hook block (212) around the fixed shaft (214). The hook block (212) is arranged in an L shape. Under the action of the torsion spring (215), the wedge block (213) moves towards the outside of the L-shaped hook block (212). The reset position of the wedge block (213) is to incline towards the outside of the hook block (212). In appearance, the extended end of the wedge block (213) inclined towards the outside extends beyond the bottom extended end of the L shape of the hook block (212); When the clamping unit (21) moves downwards with the fixing plate (22) to the relative two sides of the battery tray (4), the wedge block (213) and the rotating plate (211) abut against the battery tray (4) and move downwards. When the hook block (212) moves to the hand hole of the battery tray (4), due to the absence of a abutting force, the hook end of the hook block (212) will be inserted into the hand hole of the battery tray (4). At this time, the clamping of the battery tray (4) by the clamping unit (21) is completed. Then, the clamping unit (21) moves upwards with the fixing plate (22), and the rising movement of the current battery tray (4) can be completed, facilitating the entry of the next battery tray (4) into the lifting vehicle (1); When the stacking of the current battery tray (4) is completed, it is necessary to extract the hook block (212) from the battery tray (4). At this time, the clamping unit (21) can continue to lower the hook block (212) and the wedge block (213) continues to descend. When the wedge block (213) is not in contact with the battery tray (4), the wedge block (213) will be inserted into the hand hole of the battery tray (4). At this time, the clamping unit (21) moves upward. According to the setting of the inclined surface of the wedge block (213) and the setting of the rotating plate (211), the rotating plate (211) rotates outward along the inclined surface of the wedge block (213). As the clamping unit (21) moves upward, both the hook block (212) and the wedge block (213) return to the state of being in contact with the battery tray (4). At this time, both the hook block (212) and the wedge block (213) directly rise with the rise of the rotating plate (211), completing the decoupling operation after clamping the battery tray (4).

2. The movable automatic stacking trolley according to claim 1, characterized in that, Two limiting mechanisms (24) for limiting the rotation of the rotating plate (211) to the in-place position are fixed on the fixing plate (22). The two limiting mechanisms (24) are respectively fixed on the upper and lower surfaces of the fixing plate (22). The limiting mechanism (24) includes a bolt (241), a spring (243) and a fixing seat (242) fixed on the fixing plate (22). One end of the bolt (241) passes through the fixing seat (242) and the other end is arranged at a certain gap from the rotating plate (211). The spring (243) passes through one end of the bolt (241) and abuts against the end of the bolt (241), and the other end abuts against the fixing seat (242).

3. The movable automatic stacking trolley according to any one of claims 1-2, characterized in that, The lifting vehicle (1) includes a bottom plate (11) and two corresponding columns (12). The two columns (12) are fixedly arranged on the bottom plate (11). The space formed by the bottom plate (11) and the two columns (12) is used to load the battery tray (4).

4. The movable automatic stacking trolley according to claim 3, characterized in that, The driving mechanism (23) includes a lifting slide rail (231) respectively fixed on the opposite sides of the two columns (12), a slider (232) slidably connected to the lifting slide rail (231), and a motor assembly (233) for driving the slider (232) to move. Both ends of the fixing plate (22) are fixedly connected to the slider (232).

5. The movable automatic stacking trolley according to claim 4, characterized in that, The motor assembly (233) includes a transmission shaft (234) and a stepper motor (235) for driving the transmission shaft (234) to rotate. Both ends of the transmission shaft (234) are rotatably connected to the top ends of the columns (12). First synchronous pulleys (238) are sleeved on both axial sides of the transmission shaft (234). Second synchronous pulleys (236) are arranged on the opposite sides of the lower halves of the two columns (12). The first synchronous pulleys (238) and the second synchronous pulleys (236) are connected by synchronous belts (237). The two sliders (232) are fixedly connected to the two synchronous belts (237) at corresponding positions.

6. The movable automatic stacking trolley according to claim 5, wherein, the movement direction of the synchronous belt (237) is parallel to the axis of the lifting slide rail (231).

7. The movable automatic stacking trolley according to claim 3, wherein, a conveying mechanism (3) for conveying the battery tray (4) is arranged on the upper surface of the bottom plate (11). The conveying mechanism (3) includes a plurality of rollers (31) arranged in sequence. The axes of the rollers (31) are parallel to each other.

8. The movable automatic stacking trolley according to claim 7, wherein, first photoelectric switches for detecting that the battery tray (4) moves in place are arranged at both ends in the conveying direction of the conveying mechanism (3).

9. The movable automatic stacking trolley according to claim 8, wherein, the axis of the roller (31) is perpendicular to the movement direction of the battery tray (4).

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