Double-lifting AGV trolley

Abstract

The double-lifting AGV trolley comprises a trolley body, an anti-collision fence, a walking device, a first lifting device, a second lifting device, a distance adjusting device and a material transverse moving device are arranged on the trolley body, the first lifting device and the second lifting device comprise fixing plates, shearing force arms, sliding grooves, hydraulic cylinders, piston rods, hydraulic pumps and lifting trays, and the number of the sliding grooves is two. The fixed end of the shear arm is rotationally connected with the fixed plate and the lifting tray, the sliding end of the shear arm is slidably connected with the fixed plate and the lifting tray through sliding grooves, one end of the piston rod is fixedly connected with the shear arm in the sliding groove of the lifting tray, and the other end of the piston rod is slidably connected with the hydraulic cylinder. The other end of the hydraulic cylinder is fixedly connected with the fixed end of the shear arm and rotationally connected with the fixed plate, the hydraulic pump is fixedly connected to the fixed plate and connected with the hydraulic cylinder through a pipeline, and the problems that a traditional double-lifting AGV cannot adjust the material position, and the traveling direction of the AGV is not flexible are solved.

Description

Technical Field

[0001] The present invention relates to the field of AGV trolleys, and in particular to a double-lift AGV trolley. Background Art

[0002] With the development of electronic technology, the use of AGV vehicles is becoming more and more popular. Because they can automatically move along a planned route and complete a series of actions, they can not only complete transportation operations and improve efficiency, but also operate in dangerous places and are constantly being used in manufacturing, warehousing, etc.

[0003] Most factories now use double-lift or multi-lift structures to solve the problem of materials tilting or falling. If the spacing cannot be adjusted dynamically during transportation, the materials may shift or even fall due to vibration or inertia. Especially during high-speed operation or emergency stop, fixed spacing will amplify external impact and increase the risk of material sliding. For example, stacked boxes may lose support due to too large spacing, or be squeezed and deformed due to too small spacing.

[0004] During the material loading and unloading process, it cannot be guaranteed that the position of the materials being loaded and unloaded is exactly the same each time. In existing equipment, the AGV cart cannot move the loaded materials horizontally in the equipment. This may cause the materials to fall during the loading and unloading process due to the limited position of the equipment, causing damage to the equipment and materials, increasing maintenance costs and affecting work efficiency.

[0005] AGVs are prone to collisions in complex environments due to navigation errors, obstacle avoidance failures or improper human operation, which can cause damage to the body shell, sensors or drive components. It may also cause the lidar to deviate or the wheel structure to deform, further reducing positioning accuracy. Frequent maintenance will not only increase costs but also affect production continuity. Summary of the invention

[0006] 1. Technical issues to be resolved In view of the problems existing in the prior art, the present invention provides a double-lift AGV trolley to solve the problems mentioned in the background technology.

[0007] (II) Technical solution To achieve the above object, the present invention provides the following technical solution: A double-lifting AGV cart, comprising a vehicle body, on which there are provided a collision avoidance fence, a traveling device, a first lifting device, a second lifting device, a spacing adjustment device and a material transverse movement device. The first lifting device and the second lifting device include a fixed plate, a shear arm, a chute, a hydraulic cylinder, a piston rod, a hydraulic pump and a lifting tray. There are two chutes, which are respectively fixedly connected to the fixed plate and the lifting tray. The fixed ends of the shear arms are respectively rotatably connected to the fixed plate and the lifting tray, and the sliding ends are respectively slidably connected to the fixed plate and the lifting tray through the chutes. One end of the piston rod is fixedly connected to the shear arm in the chute of the lifting tray, and the other end is slidably connected to the hydraulic cylinder. The other end of the hydraulic cylinder is fixedly connected to the fixed end of the shear arm and is rotatably connected to the fixed plate. The hydraulic pump is fixedly connected to the fixed plate and is connected to the hydraulic cylinder through a pipeline. The fixed plate of the first lifting device is movably connected to the spacing adjustment device, the spacing adjustment device is movably connected to the material transverse movement device, the second lifting device is movably connected to the material transverse movement device, and the collision avoidance fence, the traveling device and the material transverse movement device are fixedly installed on the vehicle body.

[0008] The present invention is further provided such that the material transverse movement device and the spacing adjustment device are moved by a drive assembly. The drive assembly includes a drive motor, a lead screw, a coupling, a slide rail and a support plate. The drive motor passes through the support plate and is connected to the coupling. The coupling is connected to the lead screw. The lead screw is movably connected to the support plate. There are two slide rails, which are respectively connected to the support plate. The lead screw is respectively cooperatively connected to the support plate, the spacing adjustment device or the fixed plate. The support plate in the material transverse movement device is fixedly connected to the vehicle body.

[0009] The present invention is further provided such that the spacing adjustment device includes a drive assembly and a bracket. The drive assembly in the spacing adjustment device is fixedly connected to the bracket through the support plate, and the bracket is movably connected to the material transverse movement device.

[0010] The present invention is further provided such that there is one collision avoidance fence at each end of the vehicle body, and the collision avoidance fence is fixedly connected to the vehicle body, reducing the damage to the vehicle body caused by collision.

[0011] The present invention is further provided such that the traveling device includes a bottom plate, a steering shaft, a wheel frame, a wheel shaft and wheels. The wheels are rotatably connected to one end of the wheel frame through the wheel shaft, and the other end of the wheel frame is rotatably connected to the bottom plate through the steering shaft.

[0012] The present invention is further provided such that there are four traveling devices, which are respectively fixedly connected to the four corners below the vehicle body through the bottom plate, improving the flexibility of the vehicle body movement.

[0013] The present invention is further provided such that the lifting tray is provided with a groove, which can further improve the stability of material placement.

[0014] The present invention is further configured such that the vehicle body is provided with a control panel, which improves the accuracy of using the device.

[0015] The present invention is further configured such that an anti-corrosion coating is provided on the outer surface of the vehicle body, and the anti-corrosion coating comprises the following effective components in parts by weight: 5-20 parts of acrylic resin, 5-20 parts of alkyd resin, 2-8 parts of cerium nitrate, 2-4 parts of preservative, 2-4 parts of propylene glycol, 3-6 parts of aluminum hydroxide, and 2-6 parts of curing agent.

[0016] The present invention is further configured such that an anti-corrosion coating is provided on the outer surface of the vehicle body, and the anti-corrosion coating comprises the following effective components in parts by weight: 10 parts of acrylic resin, 15 parts of alkyd resin, 5 parts of cerium nitrate, 3 parts of preservative, 3 parts of propylene glycol, 5 parts of aluminum hydroxide, and 4 parts of curing agent.

[0017] (III) Beneficial effects Compared with the prior art, the present invention provides a double-lifting AGV cart, which has the following beneficial effects: 1. The spacing adjustment device can adjust the distance between the lifting devices through the cooperation among the driving motor, the lead screw, the coupling, the slide rail and the support plate. The support plates at both ends ensure that the fixed seats or brackets connected to the lead screw will not overrun, can cope with the placement problems of materials with different lengths and shapes, and ensure the stability of material placement.

[0018] 2. The material lateral movement device also through the cooperation among the driving motor, the lead screw, the coupling, the slide rail and the support plate, can laterally move the materials loaded by the lifting device according to different road conditions during the driving of the cart, the shapes of the materials and the placement positions of loading and unloading, which facilitates the loading and unloading of materials and improves the efficiency of the material transportation process.

[0019] 3. The traveling device constructs a structure for the cart to travel through the cooperation of the bottom plate, the steering shaft, the wheel frame, the wheel shaft and the wheels. Since the wheel frame can cooperate with the steering shaft to rotate, the wheels can move in any horizontal direction, removing the limitation of horizontal movement. And due to the arrangement of multiple traveling mechanisms, the traveling route of the cart is more flexible and more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of a double-lifting AGV cart in the present invention; Figure 2 is a diagram of the cooperation relationship among the spacing adjustment device, the material lateral movement device and the first lifting device in the present invention; Figure 3 is a schematic diagram of the structure of the lifting device in the present invention; Figure 4 is a schematic diagram of the structure of the driving assembly in the present invention; Figure 5 This is a schematic structural diagram of the traveling mechanism in the present invention.

[0021] In the figure: 1, vehicle body; 2, anti-collision bar; 3, traveling device; 4, first lifting device; 5, second lifting device; 6, spacing adjustment device; 7, material transverse movement device; 8, fixing plate; 9, shear arm; 10, chute; 11, hydraulic cylinder; 12, piston rod; 13, hydraulic pump; 14, lifting tray; 15, drive motor; 16, lead screw; 17, coupling; 18, slide rail; 19, support plate; 20, bracket; 21, bottom plate; 22, steering shaft; 23, wheel carrier; 24, wheel axle; 25, wheel; 26, groove; 27, control panel. Specific embodiments

[0022] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0023] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0024] In the present invention, unless otherwise stated, the orientations such as "upper, lower" are usually in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left, right" are usually in the left and right shown in the drawings; "inside, outside" refer to the inside and outside relative to the contours of the respective components, but the above orientation terms do not limit the present invention.

[0025] Please refer to Figures 1 - 5, A double-lifting AGV cart, including a vehicle body 1, on which there are an anti-collision bar 2, a traveling device 3, a first lifting device 4, a second lifting device 5, a spacing adjustment device 6 and a material transverse movement device 7. The first lifting device 4 and the second lifting device 5 include a fixed plate 8, a shear arm 9, a chute 10, a hydraulic cylinder 11, a piston rod 12, a hydraulic pump 13 and a lifting tray 14. There are two chutes 10, which are respectively fixedly connected to the fixed plate 8 and the lifting tray 14. The fixed ends of the shear arms 9 are respectively rotatably connected to the fixed plate 8 and the lifting tray 14, and the sliding ends are respectively slidably connected to the fixed plate 8 and the lifting tray 14 through the chutes 10. One end of the piston rod 12 is fixedly connected to the shear arm 9 in the chute 10 of the lifting tray 14, and the other end is slidably connected to the hydraulic cylinder 11. The other end of the hydraulic cylinder 11 is fixedly connected to the fixed end of the shear arm 9 and rotatably connected to the fixed plate 8. The hydraulic pump 13 is fixedly connected to the fixed plate 8 and is connected to the hydraulic cylinder 11 through a pipeline. The fixed plate 8 of the first lifting device 4 is movably connected to the spacing adjustment device 6, the spacing adjustment device 6 is movably connected to the material transverse movement device 7, and the second lifting device 5 is movably connected to the material transverse movement device 7. The anti-collision bar 2, the traveling device 3 and the material transverse movement device 7 are fixedly installed on the vehicle body 1.

[0026] The material transverse movement device 7 and the spacing adjustment device 6 are moved by a driving assembly. The driving assembly includes a driving motor 15, a lead screw 16, a coupling 17, a slide rail 18 and a support plate 19. The driving motor 15 passes through the support plate 19 and is connected to the coupling 17. The coupling 17 is connected to the lead screw 16. The lead screw 16 is movably connected to the support plate 19. There are two slide rails 18, which are respectively connected to the support plate 19. The lead screw 16 is respectively cooperatively connected to the support plate 19, the spacing adjustment device 6 or the fixed plate 8. The support plate 19 in the material transverse movement device 7 is fixedly connected to the vehicle body 1.

[0027] The spacing adjustment device 6 includes a driving assembly and a bracket 20. The driving assembly in the spacing adjustment device 6 is fixedly connected to the bracket 20 through the support plate 19, and the bracket 20 is movably connected to the material transverse movement device 7.

[0028] One anti-collision bar 2 is provided at each end of the vehicle body 1, and the anti-collision bar 2 is fixedly connected to the vehicle body 1.

[0029] The traveling device 3 includes a bottom plate 21, a steering shaft 22, a wheel bracket 23, a wheel axle 24 and wheels 25. The wheels 25 are rotatably connected to one end of the wheel bracket 23 through the wheel axle 24, and the other end of the wheel bracket 23 is rotatably connected to the bottom plate 21 through the steering shaft 22.

[0030] There are four traveling devices 3, which are respectively fixedly connected to the four corners below the vehicle body 1 through the bottom plate 21.

[0031] The lifting tray 14 is provided with a groove 26.

[0032] A control panel 27 is provided on the vehicle body 1.

[0033] In this embodiment, when the device needs to be used, the material is placed in the groove 26 of the lifting tray 14 in the first lifting device 4 and the second lifting device 5. When it is necessary to adjust the distance between the first lifting device 4 and the second lifting device 5 according to the length of the material, the driving component in the distance adjusting device 6 is started to move the fixed plate 8. The movement of the fixed plate 8 causes the first lifting device 4 to move to complete the distance adjustment. When it is necessary to adjust the height at which the material is placed, the hydraulic pump 13 is started to make the piston rod 12 extend and retract in the hydraulic cylinder 11. The extension and retraction of the piston rod 12 cause the shear arm 9 to extend and retract. The movable end of the shear arm 9 slides in the chute 10 during extension and retraction to change the height of the lifting tray 14. When it is necessary to laterally move the material position for convenient loading and unloading, the driving component of the material lateral movement device 7 in the first lifting device 4 and the second lifting device 5 is started for lateral movement. The work of the driving component is that the driving motor 15 drives the coupling 17 to rotate, the coupling 17 drives the lead screw 16 to rotate, so that the fixed plate 8 or the distance adjusting device 6 connected to the lead screw 16 moves along the direction of the slide rail 18, and the support plate 19 can ensure that the fixed plate 8 and the distance adjusting device 6 do not move beyond the limit.

[0034] More specifically, a driving route is planned for the device through the control panel 27 in the vehicle body 1. The traveling device 3 is fixedly connected to the vehicle body 1 through the bottom plate 21. The wheel frame 23 rotates the steering shaft 22 to change the horizontal movement direction of the wheels 25. The wheels 25 are connected to the wheel frame 23 through the wheel shaft 24, so that the traveling device 3 drives the vehicle body 1 to move. The addition of the anti-collision bar 2 effectively reduces the damage to the vehicle body 1 caused by collisions during the driving of the vehicle body 1.

[0035] In summary, when the overall device is in use or operation: when the device needs to be used, the material is placed in the groove 26 of the lifting tray 14 in the first lifting device 4 and the second lifting device 5. When it is necessary to adjust the distance between the first lifting device 4 and the second lifting device 5 according to the length of the material, the driving component in the distance adjusting device 6 is started to move the fixed plate 8. The movement of the fixed plate 8 causes the first lifting device 4 to move to complete the distance adjustment. When it is necessary to adjust the height at which the material is placed, the hydraulic pump 13 is started to make the piston rod 12 extend and retract in the hydraulic cylinder 11. The extension and retraction of the piston rod 12 cause the shear arm 9 to extend and retract. The movable end of the shear arm 9 slides in the chute 10 during extension and retraction to change the height of the lifting tray 14. When it is necessary to laterally move the material position for convenient loading and unloading, the driving component of the material lateral movement device 7 in the first lifting device 4 and the second lifting device 5 is started for lateral movement. The work of the driving component is that the driving motor 15 drives the coupling 17 to rotate, the coupling 17 drives the lead screw 16 to rotate, so that the fixed plate 8 or the distance adjusting device 6 connected to the lead screw 16 moves along the direction of the slide rail 18, and the support plate 19 can ensure that the fixed plate 8 and the distance adjusting device 6 do not move beyond the limit.

[0036] A driving route is planned for the equipment through the control panel 27 in the vehicle body 1. The traveling device 3 is fixedly connected to the vehicle body 1 through the bottom plate 21. The wheel frame 23 rotates the steering shaft 22 to change the horizontal movement direction of the wheels 25. The wheels 25 are connected to the inside of the wheel frame 23 through the wheel axle 24, so that the traveling device 3 drives the vehicle body 1 to move. The addition of the anti-collision bar 2 effectively reduces the damage to the vehicle body 1 caused by collisions during the driving of the vehicle body 1.

[0037] The anti-corrosion coating comprises the following effective components in parts by weight: 5 parts of acrylic resin, 5 parts of alkyd resin, 2 parts of cerium nitrate, 2 parts of preservative, 2 parts of propylene glycol, 3 parts of aluminum hydroxide and 2 parts of curing agent. The above materials are put into relevant equipment for production, and after production, it is coated on the outer surface of the vehicle body 1 with a brush.

[0038] In all the solutions mentioned above, for the connection between two components, welding, connection with bolts and nuts, connection with bolts or screws or other well-known connection methods can be selected according to the actual situation, which will not be elaborated one by one here. For those mentioned above that involve fixed connection, welding is preferably considered. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-lifting AGV vehicle, comprising a vehicle body (1), characterized in that, The vehicle body (1) is provided with a collision avoidance rail (2), a traveling device (3), a first lifting device (4), a second lifting device (5), a spacing adjustment device (6) and a material lateral shifting device (7). The first lifting device (4) and the second lifting device (5) include a fixed plate (8), a shear arm (9), a chute (10), a hydraulic cylinder (11), a piston rod (12), a hydraulic pump (13) and a lifting tray (14). There are two chutes (10), which are respectively fixedly connected to the fixed plate (8) and the lifting tray (14). The fixed ends of the shear arms (9) are respectively rotatably connected to the fixed plate (8) and the lifting tray (14), and the sliding ends are respectively slidably connected to the fixed plate (8) and the lifting tray (14) through the chutes (10). One end of the piston rod (12) is fixedly connected to the shear arm (9) in the chute (10) of the lifting tray (14), and the other end is slidably connected to the hydraulic cylinder (11). The other end of the hydraulic cylinder (11) is fixedly connected to the fixed end of the shear arm (9) and is rotatably connected to the fixed plate (8). The hydraulic pump (13) is fixedly connected to the fixed plate (8) and is connected to the hydraulic cylinder (11) through a pipeline. The fixed plate (8) of the first lifting device (4) is movably connected to the spacing adjustment device (6). The spacing adjustment device (6) is movably connected to the material lateral shifting device (7). The second lifting device (5) is movably connected to the material lateral shifting device (7). The collision avoidance rail (2), the traveling device (3) and the material lateral shifting device (7) are fixedly installed on the vehicle body (1).

2. The dual-lifting AGV cart according to claim 1, wherein: The movement of the material lateral shifting device (7) is completed by a driving assembly. The driving assembly includes a driving motor (15), a lead screw (16), a coupling (17), a slide rail (18) and a support plate (19). The driving motor (15) passes through the support plate (19) and is connected to the coupling (17). The coupling (17) is connected to the lead screw (16). The lead screw (16) is movably connected to the support plate (19). There are two slide rails (18), which are respectively connected to the support plate (19). The lead screw (16) is respectively cooperatively connected to the support plate (19), the spacing adjustment device (6) or the fixed plate (8). The support plate (19) in the material lateral shifting device (7) is fixedly connected to the vehicle body (1).

3. The double-lift AGV cart according to claim 2, characterized in that: The spacing adjustment device (6) includes a driving assembly and a bracket (20). The driving assembly in the spacing adjustment device (6) is fixedly connected to the bracket (20) through the support plate (19). The bracket (20) is movably connected to the material lateral shifting device (7).

4. A double-lifting AGV cart according to claim 1, characterized in that: One collision avoidance rail (2) is provided at each end of the vehicle body (1). The collision avoidance rail (2) is fixedly connected to the vehicle body (1).

5. The dual-lifting AGV trolley according to claim 3, characterized in that: The traveling device (3) includes a bottom plate (21), a steering shaft (22), a wheel bracket (23), a wheel axle (24) and wheels (25). The wheels (25) are rotatably connected to one end of the wheel bracket (23) through the wheel axle (24). The other end of the wheel bracket (23) is rotatably connected to the bottom plate (21) through the steering shaft (22).

6. The dual-lift AGV cart according to claim 5, wherein: There are four of the walking devices (3), which are respectively fixedly connected to the four corners below the vehicle body (1) through the bottom plate (21).

7. The double-lifting AGV trolley according to claim 2, characterized in that: The lifting tray (14) is provided with a groove (26).

8. A dual-lift AGV cart according to claim 1, characterized in that: The vehicle body is provided with a control panel (27).

9. A double-lifting AGV cart according to claim 1, characterized in that: An anti-corrosion coating is provided on the outer surface of the vehicle body (1), and the anti-corrosion coating comprises the following effective components in parts by weight: 5-20 parts of acrylic resin, 5-20 parts of alkyd resin, 2-8 parts of cerium nitrate, 2-4 parts of preservative, 2-4 parts of propylene glycol, 3-6 parts of aluminum hydroxide, and 2-6 parts of curing agent.

10. A double-lifting AGV trolley according to claim 1, characterized in that: An anti-corrosion coating is provided on the outer surface of the vehicle body (1), and the anti-corrosion coating comprises the following effective components in parts by weight: 10 parts of acrylic resin, 15 parts of alkyd resin, 5 parts of cerium nitrate, 3 parts of preservative, 3 parts of propylene glycol, 5 parts of aluminum hydroxide, and 4 parts of curing agent.

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