An AGV forklift battery replacement mechanism

Abstract

The present application discloses a battery replacement mechanism for an AGV forklift, which relates to the field of AGV forklifts. It includes a vehicle body and a bracket rotatably arranged in the forklift placement area. A support bracket is lapped on the vehicle body, and a plurality of first rollers are rotatably arranged on the support bracket. The rotation axis of the first roller is parallel to the rotation axis of the bracket. A positioning block is arranged on the support bracket, and a positioning groove inserted and matched with the positioning block is formed on the bracket. The positioning groove is located on the side away from the rotation point of the bracket. A lifting assembly is arranged on the side of the vehicle body away from the positioning block. When the positioning block is inserted into the positioning groove, the lifting assembly drives the support bracket and the bracket to rotate. A plurality of second rollers are rotatably arranged on the bracket, and the rotation axis direction of the second roller is parallel to that of the first roller. A hook for connecting the battery pack is arranged on the support bracket, and the hook is located on the side away from the positioning block. A pulley assembly for driving the hook to retract and extend is arranged on the support bracket. This application helps to improve the battery replacement speed.

Description

Technical Field

[0001] This application relates to the field of AGV forklifts, and particularly to a battery replacement mechanism for an AGV forklift. Background Art

[0002] AGV forklifts play an important role in the logistics turnover of palletized goods.

[0003] Currently, a placement area is formed inside the AGV forklift, and a large battery pack is placed in the placement area. Referring to Figure 1 , the battery pack includes an open box body 20 and batteries 30 placed inside the box body 20, and a handle 40 is installed on the box body 20. To meet the 24-hour operation of the forklift, one is to use automatic fast charging, and the other is to replace the battery pack.

[0004] The existing fast charging method takes 2.5 hours to fully charge, with low efficiency; the second method requires using a crane to lift. First, lift and remove the discharged battery pack from the forklift, and then lift and install the charged battery pack into the forklift. Compared with charging, this method has a higher speed, but in practice, the time for the crane to move for loading and unloading is relatively long, that is, a long waiting time is required before the forklift can operate. During this process, the forklift needs to stand still for a long time, which has a greater impact on the efficiency of logistics turnover. Therefore, there is an urgent need to invent a fast battery replacement method. Summary of the Invention

[0005] In order to improve the battery replacement speed, this application provides a battery replacement mechanism for an AGV forklift.

[0006] The battery replacement mechanism for an AGV forklift provided by this application adopts the following technical solutions:

[0007] A battery replacement mechanism for an AGV forklift includes a vehicle body and a bracket rotatably arranged in the forklift placement area. A supporting bracket is lapped on the vehicle body. A plurality of first rollers are rotatably arranged on the supporting bracket. The rotation axis of the first rollers is parallel to the rotation axis of the bracket. A positioning block is arranged on the supporting bracket, and a positioning groove inserted and matched with the positioning block is opened on the bracket. The positioning groove is located on the side away from the rotation point of the bracket. A lifting component is arranged on the side of the vehicle body away from the positioning block. When the positioning block is inserted into the positioning groove, the lifting component drives the supporting bracket and the bracket to rotate. A plurality of second rollers are rotatably arranged on the bracket. The rotation axis direction of the second rollers is parallel to that of the first rollers. A hook for hooking the battery pack is arranged on the supporting bracket. The hook is located on the side away from the positioning block. A pulley component for driving the hook to retract and extend is arranged on the supporting bracket.

[0008] By adopting the above technical solution, the vehicle body is moved to the battery compartment of the forklift, and the positioning block and the positioning groove are inserted and matched to realize the positioning of the vehicle body. Then, the hook is hooked with the handle of the battery pack, and the pulley assembly is used to drive the hook to retract, so that the battery pack rolls from the second roller in the forklift to the first roller on the vehicle body, realizing the recovery of the battery pack. Then, another vehicle body with a fully charged battery pack is moved to the forklift, and then the lifting assembly drives the bearing bracket and the bracket to be lifted to a certain angle. Due to its own weight, the battery pack will slide from the first roller to the second roller. At the same time, the staff can use the pulley assembly to control the sliding speed of the battery pack until the battery pack slides into the forklift, realizing the replacement action of the battery pack. This replacement method is more labor-saving, and the overall replacement time is about 2 minutes, with higher efficiency, which helps to improve the replacement speed of the battery pack.

[0009] Preferably, the lifting assembly includes a jack. The base of the jack is hinged to the vehicle body, and the rotation axis of the base of the jack is in the same direction as the rotation axis of the bracket. The piston rod of the jack is ball-jointed to the bearing bracket.

[0010] By adopting the above technical solution, when it is necessary to transfer the battery pack into the forklift, by stepping on the lever of the jack with the foot, the piston rod can be extended, thereby realizing the rotational lifting action of the bearing bracket, so that the battery pack rolls into the forklift on the roller.

[0011] Preferably, the bearing bracket includes two spaced-apart mounting plates. The length direction of the mounting plate is the same as the sliding direction of the battery pack. A plurality of mounting holes are spaced apart on both mounting plates. The first roller is composed of a fixed shaft and a sleeve rotating on the fixed shaft. The two ends of the fixed shaft are lapped in the corresponding two mounting holes.

[0012] By adopting the above technical solution, the fixed shaft of the roller is lapped in the mounting hole, realizing the rapid installation of the roller, and when the roller is damaged, the disassembly is also very convenient.

[0013] Preferably, the pulley assembly includes a fixed pulley and a movable pulley. The fixed pulley is rotatably arranged on the bearing bracket. A rope is wound around the fixed pulley. One end of the rope is fixedly connected to the fixed pulley, and the other end bypasses the movable pulley and is fixed to the bearing bracket. A connecting plate is arranged on the circumferential side of the movable pulley, and the hook is arranged on the connecting plate.

[0014] By adopting the above technical solution, when taking the battery in the forklift, the hook is hooked with the handle of the battery pack, and then by rotating the fixed pulley, the outward rolling action of the battery can be realized, which is convenient for taking it out. In addition, when putting the battery into the forklift, the bearing bracket is inclined. By controlling the rotation speed of the movable pulley, the sliding speed of the battery can be adjusted.

[0015] Preferably, a support plate is provided on the carrier bracket, a connecting rod is fixedly connected to the support plate, the fixed pulley is rotatably connected to the connecting rod, and one end of the rope passing around the movable pulley is fixed to the connecting rod.

[0016] By adopting the above technical solution, one end of the rope is fixed to the fixed pulley and the other end is fixed to the connecting rod. At this time, the force pulling the battery pack will be divided into two strands, that is, the force rotating the fixed pulley becomes smaller, which helps the staff to pull out the battery pack more quickly and labor - saving.

[0017] Preferably, a blocking plate is rotatably connected to the vehicle body, and the blocking plate is located on the side close to the bracket.

[0018] By adopting the above technical solution, after the battery pack in the forklift is taken out, the blocking plate is rotated to play a role in blocking and protecting the battery pack, which helps to prevent the battery from accidentally rolling and falling off the vehicle body during the movement of the vehicle body.

[0019] Preferably, a buffer block is provided on the side of the vehicle body close to the positioning block.

[0020] By adopting the above technical solution, when the vehicle body is moved to the forklift and the positioning block is inserted into and positioned in the positioning groove, the buffer block of the vehicle body abuts against the forklift, realizing the docking and positioning between the vehicle body and the forklift, and the buffer block has a certain buffering effect to avoid hard contact and cause wear to the forklift.

[0021] Preferably, the rotation angle of the carrier bracket is greater than 6 degrees.

[0022] By adopting the above technical solution, the maximum friction force between the roller and the battery is 0.01. When the carrier bracket is tilted, through mechanical analysis, using the formula (mgsinθ - μmgcosθ≥0), it is calculated that when the tilt angle of the carrier bracket is greater than 6 degrees, the battery pack can slide by itself, which is more labor - saving.

[0023] Preferably, a plug - in block is provided on the bracket, the positioning groove is opened in the plug - in block, and the plug - in block is provided with a V - shaped flared opening at the notch of the positioning groove.

[0024] By adopting the above technical solution, the V - shaped flared opening at the notch of the positioning groove helps to ensure that the positioning block can be quickly inserted and matched with the positioning groove from the plug - in block.

[0025] Preferably, a roller is provided on the side of the carrier bracket close to the bracket, the vehicle body is detachably connected with a pin shaft at both ends of the roller, the pin shaft is rotationally matched with the roller, and the rotation axis direction of the roller is parallel to the rotation axis direction of the first roller.

[0026] By adopting the above technical solution, when performing the battery replacement operation, the pin shaft is disassembled. At this time, when the jack operates, the supporting bracket will rotate together with the bracket. When the pin shaft is installed and rotatably engaged with the roller, when the jack operates at this time, the supporting bracket will rotate with the roller as the rotation axis, and other goods can be transported and transferred, which helps to improve the applicability of the vehicle body.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. When removing the battery pack, use the hook to hook the handle of the battery pack, and then rotate the fixed pulley to realize the movement of the battery pack from the second roller to the first roller, and complete the removal operation of the battery pack; then use another to prevent the vehicle body of the battery pack from docking with the forklift, so that the positioning block and the positioning groove are inserted. At this time, the jack operates, so that the supporting bracket and the bracket rotate synchronously to a certain angle. At this time, the battery pack can slide from the first roller to the second roller by its own weight, realizing the replacement action of the battery pack. This method is more labor-saving and has higher efficiency;

[0029] 2. With the cooperation between the fixed pulley and the movable pulley, when removing the battery pack in the forklift, the force pulling the battery pack is divided into two strands, that is, the force for rotating the fixed pulley is smaller, that is, it is more labor-saving to pull the battery pack;

[0030] 3. The pin shaft is detachably connected to the vehicle body, and the rotational cooperation between the pin shaft and the roller realizes the rotation of the supporting bracket and the vehicle body. When replacing the battery pack, the pin shaft is disassembled, and the supporting bracket rotates together with the bracket. When transporting and transferring other goods, the pin shaft can be installed to realize the rotation of the supporting bracket, that is, the applicability of the vehicle body is stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic structural diagram of a battery pack in the related art;

[0032] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0033] Figure 3 For Figure 2 The partial enlarged view of part A in, mainly showing the structure of the positioning block and the positioning groove;

[0034] Figure 4 It is a top view of the vehicle body in an embodiment of the present application, mainly showing the structure of the pulley assembly;

[0035] Figure 5 It is a schematic diagram of the overall structure of the vehicle body in an embodiment of the present application;

[0036] Figure 6This is an exploded view of a partial structure of the support bracket in the embodiments of the present application, mainly showing the structures of the mounting holes and the first roller wheel.

[0037] Reference numerals: 1, vehicle body; 11, buffer block; 12, rotating plate; 121, rotating groove; 13, blocking plate; 2, bracket; 21, plug-in block; 22, positioning groove; 23, second roller wheel; 3, support bracket; 31, support plate; 32, connecting rod; 33, mounting plate; 331, mounting hole; 4, first roller wheel; 41, fixed shaft; 42, sleeve; 5, positioning block; 6, lifting assembly; 61, jack; 7, hook; 8, pulley assembly; 81, fixed pulley; 811, rocker arm; 812, rope; 82, movable pulley; 821, connecting plate; 822, fixing plate; 9, roller; 10, pin shaft; 20, box body; 30, storage battery; 40, handle. Detailed implementation manners

[0038] The following further elaborates on the present application Figure 2-6 in conjunction with the appended drawings.

[0039] The embodiments of the present application disclose an AGV forklift battery replacement mechanism.

[0040] Referring to Figure 2 and Figure 3 , the AGV forklift battery replacement mechanism includes a vehicle body 1 and a bracket 2 hinged in the forklift placement area. The bracket 2 is hinged in the placement area through a pin shaft structure. A support bracket 3 is lapped on the vehicle frame. A plurality of first roller wheels 4 are rotatably arranged on the support bracket 3. The rotation axis of the first roller wheel 4 is parallel to the rotation axis of the bracket 2. A positioning block 5 is welded and fixed on the support bracket 3. A plug-in block 21 is welded and fixed on the bracket 2. A positioning groove 22 that is inserted and matched with the positioning block 5 is opened on the plug-in block 21. The positioning groove 22 is located on the side away from the rotation point of the bracket 2. The plug-in block 21 is arranged with a V-shaped flared opening at the notch of the positioning groove 22. A lifting assembly 6 is arranged on the side of the vehicle body 1 away from the positioning block 5. When the positioning block 5 is inserted and matched with the positioning groove 22, the lifting assembly 6 drives the support bracket 3 and the bracket 2 to rotate. A plurality of second roller wheels 23 are rotatably connected to the bracket 2. The rotation axis of the second roller wheel 23 is parallel to that of the first roller wheel 4. And when the positioning block 5 is inserted and matched with the positioning groove 22, the first roller wheel 4 and the second roller wheel 23 are butted against each other.

[0041] Referring to Figure 2 and Figure 4 , a hook 7 is arranged on the side of the support bracket 3 away from the positioning block 5. The hook 7 is hooked with the handle on the battery pack. A pulley assembly 8 for driving the retraction and release of the hook 7 is arranged on the support bracket 3.

[0042] Move the vehicle body 1 to the placement bin of the forklift, and make the positioning block 5 and the positioning groove 22 in plug-in fit to achieve the positioning of the vehicle body 1. Then, hook the hook 7 on the handle of the battery pack, and use the pulley assembly 8 to retract the hook 7, that is, make the battery pack roll from the second roller 23 to the first roller 4 to complete the removal operation of the battery pack. Immediately move another trolley over, on which a fully charged battery pack is placed. Similarly, make the positioning block 5 and the positioning groove 22 in plug-in fit. Then, the lifting assembly 6 makes the bearing bracket 3 and the bracket 2 lift at a certain angle. At this time, the battery pack will roll from the first roller 4 to the direction of the second roller 23 due to its own weight to complete the replacement action of the battery pack. The whole process can be completed in about 2 minutes, which is more labor-saving and has higher efficiency.

[0043] On one side of the vehicle body 1 close to the bracket 2, a buffer block 11 is connected by studs. The buffer block 11 is made of polyurethane board. When the positioning block 5 and the positioning groove 22 are in plug-in fit, the vehicle body 1 continues to move towards the forklift until the buffer block 11 abuts against the forklift, achieving the positioning of the relative positions of the vehicle body 1 and the forklift. And the buffer block 11 is made of polyurethane board, which has a certain buffering effect, avoiding hard contact between the vehicle body 1 and the forklift and reducing the wear between the two.

[0044] Refer to Figure 2 and Figure 4 As shown in FIGS. and, the pulley assembly 8 includes a fixed pulley 81 and a movable pulley 82. On the side of the bearing bracket 3 away from the positioning block 5, a support plate 31 is welded. A connecting rod 32 is fixedly connected to the support plate 31. The fixed pulley 81 is rotatably connected to the connecting rod 32. A rocker arm 811 is installed on the fixed pulley 81. A rope 812 is wound around the fixed pulley 81. One end of the rope 812 is fixed to the fixed pulley 81, and the other end passes around the movable pulley 82 and is fixed to the connecting rod 32. Connecting plates 821 are installed on both sides of the movable pulley 82. The movable pulley 82 is rotatably connected to the connecting plates 821. A fixing plate 822 is welded between the two connecting plates 821. The hook 7 is threadedly connected to the fixing plate 822. Rotating the rocker arm 811 drives the fixed pulley 81 to rotate, and then the hook 7 can be retracted and released under the drive of the movable pulley 82.

[0045] Refer to Figure 2 and Figure 5 As shown in FIGS. and, the lifting assembly 6 is set as a jack 61. The base of the jack 61 is hinged to the vehicle body 1. The rotation axis of the base of the jack 61 is parallel to the rotation axis of the bracket 2. The end of the piston rod of the jack 61 is ball-hinged to the bearing bracket 3. Operating the jack 61 can achieve the rotation of the bearing bracket 3 and the bracket 2. Among them, the rotation angle of the jack 61 driving the bearing bracket 3 to rotate is greater than 6 degrees. According to Newton's second law, when mgsinθ - μmgcosθ ≥ 0, the battery pack slides down by itself due to its own weight. After calculation, when the inclination angle is greater than 6 degrees, the self-sliding of the battery pack can be achieved.

[0046] The vehicle body 1 is fixedly connected to a rotating plate 12 at one side of the bracket 2, and a rotating groove 121 is provided on the rotating plate 12. The rotating plate 12 is rotatably connected to a blocking plate 13 in the rotating groove 121, and the notch of the rotating groove 121 can limit the rotation angle of the blocking plate 13. Since the battery pack and the first roller 4 are in rolling cooperation, the friction force is small. When a battery pack is placed on the vehicle body 1, the blocking plate 13 is rotated to block and limit the battery pack, which helps to prevent the battery pack from slipping accidentally.

[0047] Reference Figure 5 and Figure 6 The support bracket 3 includes two installation plates 33 arranged at intervals and a horizontal plate for connecting the ends of the installation plates 33 together. The installation plates 33 are each provided with a plurality of installation holes 331. The first roller 4 is composed of a fixed shaft 41 and a sleeve 42 rotatably connected to the fixed shaft 41 through a bearing. The two ends of the fixed shaft 41 overlap in the corresponding two installation holes 331. The two ends of the fixed shaft 41 overlap in the installation holes 331, that is, the first roller 4 overlaps in the installation holes 331, which makes disassembly and assembly more convenient. Similarly, the installation method of the second roller 23 is the same as that of the first roller 4.

[0048] Reference Figure 5 The side of the support frame 3 close to the bracket 2 is plugged and fixed with a roller 9, and the length direction of the roller 9 is consistent with the length direction of the first roller 4, that is, the rotation axis directions of the two are parallel. The two ends of the vehicle body 1 located on the roller 9 are detachably connected with a pin shaft 10 through bolts, and the pin shaft 10 is plugged with the roller 9 to form a rotation fit. When the battery is replaced, the pin shaft 10 is removed, and the support frame 3 rotates with the bracket 2, which is more labor-saving; when the vehicle body 1 is used for the transportation of other goods, the pin shaft 10 can be installed so that the support frame 3 rotates along the axis of the roller 9 to adapt to the transportation of different goods.

[0049] The implementation principle of a battery replacement mechanism for an AGV forklift in an embodiment of this application is as follows: The vehicle body 1 moves to the forklift. The positioning of the vehicle body 1 and the forklift is achieved by the plug-in fit between the positioning block 5 and the positioning groove 22. In addition, the notch of the positioning groove 22 is flared, which facilitates the quick positioning of the positioning block 5 and the positioning groove 22. Subsequently, the hook 7 is hooked to the handle of the battery pack. By rotating the rocker arm 811, the hook 7 is retracted, so that the battery pack slides from the second roller 23 onto the first roller 4, realizing the removal of the battery pack. Then, another vehicle body 1 is moved. A fully charged battery pack is placed on this vehicle body 1. When the positioning block 5 and the positioning groove 22 are plugged in, the jack 61 operates, causing the support bracket 3 and the bracket 2 to rotate a certain angle, which is greater than 6 degrees. At this time, the battery pack slides along the first roller 4 towards the second roller 23 due to its own weight, realizing the battery replacement operation. Using this method is more labor-saving and the replacement time is faster. The actual replacement time is about 2 minutes, which helps to improve the replacement efficiency of the battery pack.

[0050] The above are all preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. An AGV forklift battery replacement mechanism, characterized in that: It includes a vehicle body (1) and a bracket (2) rotatably arranged in the forklift placement area. A supporting bracket (3) is lapped on the vehicle body (1). A plurality of first rollers (4) are rotatably arranged on the supporting bracket (3). The rotation axis of the first rollers (4) is parallel to the rotation axis of the bracket (2). A positioning block (5) is arranged on the supporting bracket (3). A positioning groove (22) which is in plug-in fit with the positioning block (5) is formed on the bracket (2). The positioning groove (22) is located on the side away from the rotation point of the bracket (2). A lifting assembly (6) is arranged on the side of the vehicle body (1) away from the positioning block (5). When the positioning block (5) is plugged into the positioning groove (22), the lifting assembly (6) drives the supporting bracket (3) and the bracket (2) to rotate. A plurality of second rollers (23) are rotatably arranged on the bracket (2). The rotation axis direction of the second rollers (23) is parallel to that of the first rollers (4). A hook (7) for hooking the battery pack is arranged on the supporting bracket (3). The hook (7) is located on the side away from the positioning block (5). A pulley assembly (8) for driving the retraction and release of the hook (7) is arranged on the supporting bracket (3). A roller (9) is arranged on the side of the supporting bracket (3) close to the bracket (2). Pin shafts (10) are detachably connected to both ends of the roller (9) on the vehicle body (1). The pin shafts (10) are in rotational fit with the roller (9). The rotation axis direction of the roller (9) is parallel to the rotation axis direction of the first rollers (4). During the battery replacement operation, the pin shafts (10) are disassembled, and the supporting bracket (3) and the bracket (2) rotate together, which is more labor-saving. When the vehicle body (1) is used for the transfer of other goods, the pin shafts (10) are installed, so that the supporting bracket (3) rotates along the axis of the roller (9) to adapt to the transfer of different goods.

2. The AGV forklift battery replacement mechanism according to claim 1, characterized in that: The lifting assembly (6) includes a jack (61). The base of the jack (61) is hinged to the vehicle body (1), and the rotation axis of the base of the jack (61) is consistent with the rotation axis direction of the bracket (2). The piston rod of the jack (61) is ball-jointed to the supporting bracket (3).

3. The AGV forklift battery replacement mechanism according to claim 1, characterized in that: The supporting bracket (3) includes two spaced-apart mounting plates (33). The length direction of the mounting plates (33) is consistent with the sliding direction of the battery pack. A plurality of mounting holes (331) are spaced apart on both of the mounting plates (33). The first roller (4) is composed of a fixed shaft (41) and a sleeve (42) rotating on the fixed shaft (41). Both ends of the fixed shaft (41) are lapped in the corresponding two mounting holes (331).

4. The AGV forklift battery replacement mechanism according to claim 1, characterized in that: The pulley assembly (8) includes a fixed pulley (81) and a movable pulley (82). The fixed pulley (81) is rotatably arranged on the supporting bracket (3). A rope (812) is wound around the fixed pulley (81). One end of the rope (812) is fixedly connected to the fixed pulley (81), and the other end passes around the movable pulley (82) and is fixed to the supporting bracket (3). A connecting plate (821) is arranged on the periphery of the movable pulley (82). The hook (7) is arranged on the connecting plate (821).

5. The AGV forklift battery replacement mechanism according to claim 4, characterized in that: A support plate (31) is provided on the support bracket (3), a connecting rod (32) is fixedly connected to the support plate (31), the fixed pulley (81) is rotatably connected to the connecting rod (32), and one end of the rope (812) that bypasses the movable pulley (82) is fixed to the connecting rod (32).

6. The AGV forklift battery replacement mechanism according to claim 1, characterized in that: A blocking plate (13) is rotatably connected to the vehicle body (1), and the blocking plate (13) is located on one side close to the bracket (2).

7. The AGV forklift battery replacement mechanism according to claim 1, characterized in that: A buffer block (11) is provided on one side of the vehicle body (1) close to the positioning block (5).

8. An AGV forklift battery replacement mechanism according to claim 1, characterized in that: The rotation angle of the support bracket (3) is greater than 6 degrees.

9. The AGV forklift battery replacement mechanism according to claim 1, characterized in that: A plug-in block (21) is provided on the bracket (2), a positioning groove (22) is opened in the plug-in block (21), and the plug-in block (21) is provided with a V-shaped flared opening at the notch of the positioning groove (22).

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