Automatic guided vehicle (AGV) with rapid unloading function

Abstract

The invention relates to the field of AGVs (Automatic Guided Vehicles), in particular to an AGV capable of rapidly unloading. The defects that most of existing AGVs need to unload cargoes through manpower, so that the cargo unloading efficiency is low, meanwhile, cargoes are difficult to move to the edge of the AGV to be unloaded when the cargoes are unloaded, and the cargo unloading speed is low are overcome. The invention discloses a quick unloading AGV (Automatic Guided Vehicle) which comprises a frame and the like, four universal wheels are fixedly connected to the bottom of the frame, a supporting plate is fixedly connected to the top of the frame, and a folding mechanism is arranged on the supporting plate. Through the multiple supporting rollers and the multiple weight supporting rods which are rotationally connected in the conveying belt and the conveying belt, the multiple supporting rollers and the multiple weight supporting rods can stably support the goods frame and can also rapidly convey the goods frame, and therefore the unloading speed of the goods frame is increased.

Description

Technical Field

[0001] The invention relates to the field of AGV trolleys, and in particular to an AGV trolley for fast unloading. Background Art

[0002] AGV transport vehicle refers to a transport vehicle equipped with automatic guidance devices such as electromagnetic or optical devices, which can travel along a specified guidance path and has safety protection and various transfer functions. Due to its high degree of automation, safety, and flexibility, it is currently one of the best solutions for realizing automatic material handling in China. It can ensure that the system can automatically travel along a predetermined route without the need for manual piloting, and automatically transport goods or materials from the starting point to the destination.

[0003] At present, when the AGV transports the goods to the unloading coordinates, most of the unloading needs to be done by manpower, which makes the unloading efficiency low. At the same time, during the unloading process, due to the large friction between the goods and the AGV, it is difficult to move the goods to the edge of the AGV for unloading, which makes the unloading speed slow. Summary of the invention

[0004] In order to overcome the shortcomings of existing AGV carts that most of the goods need to be unloaded by manpower, resulting in low unloading efficiency and it is difficult to move the goods to the edge of the AGV cart for unloading, resulting in a slow unloading speed, the present invention provides an AGV cart that can automatically unload goods, thereby improving the unloading efficiency and reducing the friction between the goods and the AGV cart, so that the goods can be smoothly moved to the edge of the AGV cart for unloading, thereby improving the unloading speed of the goods and a fast unloading AGV cart.

[0005] The technical solution of the present invention is: an AGV cart for fast unloading, including a frame, four universal wheels fixedly connected to the bottom of the frame, a support plate fixedly connected to the top of the frame, a control module fixedly connected to the support plate, a folding mechanism is provided on the support plate, a conveying mechanism is provided on the folding mechanism, a lifting mechanism is provided on the folding mechanism, a cargo frame is provided on the folding mechanism, the folding mechanism is used to facilitate unloading of the cargo frame, the conveying mechanism is used to convey the cargo frame, and the lifting mechanism is used to lift the cargo frame.

[0006] Furthermore, the folding mechanism includes a center rod, two of the center rods are fixedly connected to one side of the support plate, the two center rods are symmetrically arranged, a folding plate is rotatably connected between the two center rods, two electric push rods are fixedly connected to the side of the support plate away from the folding plate, and two fixed seats are fixedly connected to the side of the folding plate close to the support plate, and the telescopic rod of the electric push rod on the same side is rotatably connected to the fixed seat on the same side.

[0007] Furthermore, the conveying mechanism includes a servo motor, the servo motor is fixedly connected to the frame, two conveying shafts are rotatably connected to the support plate, a plurality of support rollers are rotatably connected to the support plate, the plurality of support rollers are located between the two conveying shafts, a conveyor belt is wound between the two conveying shafts, transfer gears are rotatably connected to the two center rods, two transmission shafts are rotatably connected to the folding plate, a pulley is fixedly connected to one side of the two transmission shafts, a belt is wound between the two pulleys, a plurality of weight-supporting rods are rotatably connected to the folding plate, the plurality of weight-supporting rods are located between the two transmission shafts, a transmission belt is wound between the two transmission shafts, a fixed gear is fixedly connected to one side of the conveying shaft and the transmission shaft close to the servo motor, and the fixed gears on the conveying shaft and the transmission shaft are meshed with the transfer gear.

[0008] Furthermore, the conveyor belt is made of rubber.

[0009] Furthermore, the transmission belt is made of rubber.

[0010] Furthermore, a plurality of the support rollers are located inside the conveyor belt.

[0011] Furthermore, a plurality of the weight-supporting rods are located inside the conveyor belt.

[0012] Furthermore, the lifting mechanism includes a worm, and the worm is rotatably connected to both sides of the folding plate, and the two ends of the transmission shaft away from the servo motor and the ends of the two worms close to the servo motor are fixedly connected to bevel gears, and the two bevel gears are meshed. Screws are rotatably connected to both sides of the folding plate, and turbines are fixedly connected to the bottoms of the two screws, and the turbines on the same side are meshed with the worm, and guide rods are fixedly connected to both sides of the folding plate, and lifting supports are threadedly connected to the two screws, and the lifting supports are slidably connected to the guide rods.

[0013] Furthermore, it also includes a supporting mechanism, which is arranged on the folding plate, and is used to enhance the supporting force of the folding plate on the cargo frame. The supporting mechanism includes a supporting seat, two of the supporting seats are fixedly connected to one side of the frame, and two fixed sliding rods are fixedly connected to the side of the folding plate away from the cargo frame, and the two fixed sliding rods are slidably connected to the sliding seat, and a swing rod is rotatably connected between the sliding seat on the same side and the supporting seat on the same side.

[0014] Furthermore, it also includes pulleys, and the two lifting supports are rotatably connected to a plurality of pulleys, and the plurality of pulleys are used to reduce the friction between the lifting supports and the cargo frame.

[0015] The beneficial effects of the present invention are as follows: 1. The transmission shaft away from the center rod and another pulley are driven to reverse by the belt, and the reversal of the two transmission shafts drives the transmission belt to reverse, and the conveying shaft away from the folding plate is driven to rotate by the conveying belt, and the cargo frame is driven to move toward the direction of the lifting support through the conveying belt and the conveying belt for unloading, and the conveying belt and the plurality of supporting rollers and the plurality of supporting weight rods connected to the conveying belt for rotation are used so that the plurality of supporting rollers and the plurality of supporting weight rods can both stably support the cargo frame and quickly transport the cargo frame, thereby speeding up the unloading of the cargo frame.

[0016] 2. The two worms rotate forward, driving the two screws and the turbine to rotate. Due to the guiding effect of the two guide rods, the rotation of the two screws drives the two lifting supports to move downward along the two guide rods at the same time. The downward movement of the two lifting supports drives the cargo frame to move downward. The bottom of the cargo frame is in contact with the ground. The two lifting supports continue to move downward. The two lifting supports are out of contact with the cargo frame, and the cargo frame is unloaded smoothly through the two lifting supports.

[0017] 3. The two swinging rods are supported by two supporting seats, so that the folding plate is held away from the bottom of the supporting plate, so that the folding plate can unload the cargo frame more smoothly, thereby further accelerating the unloading speed of the cargo frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the first three-dimensional structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the second three-dimensional structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the first three-dimensional structure of the unloading state of the present invention.

[0021] Figure 4 It is a three-dimensional structural schematic diagram of the folding mechanism of the present invention.

[0022] Figure 5 It is a second three-dimensional structural schematic diagram of the unloading state of the present invention.

[0023] Figure 6 It is a partial three-dimensional structural schematic diagram of the folding mechanism, conveying mechanism and lifting mechanism of the present invention.

[0024] Figure 7 It is a schematic diagram of the disassembled three-dimensional structure of the conveying mechanism of the present invention.

[0025] Figure 8 For the present invention Figure 5 Schematic diagram of the enlarged three-dimensional structure of A in the middle.

[0026] Markings in the accompanying drawings: 1: frame, 2: universal wheel, 3: support plate, 31: control module, 41: center rod, 42: folding plate, 44: electric push rod, 46: fixed seat, 51: servo motor, 52: conveyor shaft, 53: support roller, 54: conveyor belt, 55: transfer gear, 56: transmission shaft, 57: pulley, 58: belt, 59: support rod, 510: transmission belt, 511: fixed gear, 61: worm, 62: bevel gear, 63: screw, 64: turbine, 65: guide rod, 66: lifting support, 8: cargo frame, 91: support seat, 92: fixed slide bar, 93: sliding seat, 94: swing rod, 10: pulley. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0028] Example 1: An AGV for rapid unloading, such as Figure 1-8 As shown, it includes a frame 1, four universal wheels 2 are welded to the bottom of the frame 1, a support plate 3 is welded to the top of the frame 1, a control module 31 is fixedly connected to the support plate, a folding mechanism is provided on the support plate 3, a conveying mechanism is provided on the folding mechanism, a lifting mechanism is provided on the folding mechanism, a cargo frame 8 is provided on the folding mechanism, the folding mechanism is used to facilitate the unloading of the cargo frame 8, the conveying mechanism is used to convey the cargo frame 8, and the lifting mechanism is used to lift the cargo frame 8.

[0029] The folding mechanism includes a center rod 41, two of the center rods 41 are welded to one side of the support plate 3, the two center rods 41 are symmetrically arranged, a folding plate 42 is rotatably connected between the two center rods 41, two electric push rods 44 are fixedly connected to the side of the support plate 3 away from the folding plate 42, two fixing seats 46 are welded to the side of the folding plate 42 close to the support plate 3, and the telescopic rod of the electric push rod 44 on the same side is rotatably connected to the fixing seat 46 on the same side.

[0030] The conveying mechanism includes a servo motor 51, the servo motor 51 is fixedly connected to the frame 1, the support plate 3 is rotatably connected to two conveying shafts 52, the support plate 3 is rotatably connected to a plurality of support rollers 53, the plurality of support rollers 53 are located between the two conveying shafts 52, a conveyor belt 54 is wound between the two conveying shafts 52, the plurality of support rollers 53 are located inside the conveyor belt 54, the conveyor belt 54 is made of rubber, the two center rods 41 are rotatably connected to a transfer gear 55, the folding plate 42 is rotatably connected to two transmission shafts 56, one of the two transmission shafts 56 Pulleys 57 are welded on both sides, and a belt 58 is passed between the two pulleys 57. A number of weight-supporting rods 59 are rotatably connected to the folding plate 42, and the number of weight-supporting rods 59 are located between the two transmission shafts 56. A transmission belt 510 is passed between the two transmission shafts 56, and the number of weight-supporting rods 59 are located in the transmission belt 510. The transmission belt 510 is made of rubber. A fixed gear 511 is fixedly connected to one side of the conveying shaft 52 and the transmission shaft 56 close to the servo motor 51, and the fixed gears 511 on the conveying shaft 52 and the transmission shaft 56 are meshed with the transfer gear 55.

[0031] The lifting mechanism includes a worm 61, and the worm 61 is rotatably connected to both sides of the folding plate 42, and both ends of the transmission shaft 56 away from the servo motor 51 and the ends of the two worms 61 close to the servo motor 51 are fixedly connected with bevel gears 62, and the two bevel gears 62 are meshed. Screws 63 are rotatably connected to both sides of the folding plate 42, and the bottoms of the two screws 63 are fixedly connected with turbines 64, and the turbines 64 on the same side are meshed with the worm 61. Guide rods 65 are welded on both sides of the folding plate 42, and the two screws 63 are threadedly connected to lifting supports 66, and the lifting supports 66 are used to support the cargo frame 8, and the lifting supports 66 are slidably connected to the guide rods 65.

[0032] When the AVG trolley is needed to transport materials, the worker first puts the cargo frame 8 onto the conveyor belt 54, and then starts the control module 31. The control module 31 controls the universal wheel 2 to drive the frame 1 and the cargo frame 8 to move toward the unloading coordinate. When the frame 1 and the cargo reach the unloading coordinate, the control module 31 starts the two electric push rods 44. The push rods of the two electric push rods 44 push the fixed seat 46 and the folding plate 42 to rotate around the center rod 41. After the folding plate 42 rotates, it is parallel to the support plate 3. Then the control module 31 starts the servo motor 51. The output shaft of the servo motor 51 reverses to drive the conveying shaft 52 near the folding plate 42 and one of the fixed gears 511 to reverse. One of the fixed gears 511 reverses to drive the transfer gear 55 on the center rod 41 to rotate forward. The positive rotation of the gear 55 drives the transmission shaft 56 close to the center rod 41 and another fixed gear 511 to reverse, the reverse rotation of the transmission shaft 56 close to the center rod 41 drives one of the pulleys 57 to reverse, the transmission shaft 56 and another pulley 57 far from the center rod 41 are driven to reverse through the belt 58, the reverse rotation of the two transmission shafts 56 drives the transmission belt 510 to reverse, the transmission shaft 52 far from the folding plate 42 is driven to rotate through the conveyor belt 54, and the cargo frame 8 is driven to move toward the direction of the lifting support 66 through the conveyor belt 54 and the conveyor belt 510 for unloading, and the plurality of support rollers 53 and the plurality of support rods 59 that are rotatably connected in the conveyor belt 54 and the conveyor belt 510 can be used to stabilize the cargo frame 8. The fixed support can also quickly transport the cargo frame 8, thereby speeding up the unloading speed of the cargo frame 8. The transmission shaft 56 far away from the center rod 41 reverses and drives the two bevel gears 62 at both ends of the transmission shaft 56 far away from the center rod 41 to reverse at the same time. The two bevel gears 62 reverse at the same time to drive the two worm gears 61 and the other two bevel gears 62 to rotate forward. The two worm gears 61 rotate forward to drive the two screws 63 and the turbine 64 to rotate. Due to the guiding effect of the two guide rods 65, the two screws 63 rotate and drive the two lifting supports 66 to move downward along the two guide rods 65 at the same time. The two lifting supports 66 move downward and drive the cargo frame 8 to move downward. The bottom of the cargo frame 8 is ground-based. The two lifting supports 66 continue to move downward. The two lifting supports 66 are separated from the cargo frame 8. The cargo frame 8 is out of contact, and the two lifting supports 66 are used to smoothly unload the cargo frame 8. When the unloading is completed, the control module 31 controls the universal wheel 2 to drive the frame 1 and the folding plate 42 to move, and the two lifting supports 66 are withdrawn from the bottom of the cargo frame 8. Then the control module 31 controls the electric push rod 44 to reset and the servo motor 51 to rotate forward. The reset of the electric push rod 44 drives the push rod to reset. The push rod reset of the electric push rod 44 pulls the fixed seat 46 and the folding plate 42 to reset. The servo motor 51 rotates forward to drive the two fixed gears 511 and the two transmission shafts 56 to reset forward. The transmission shaft 56 away from the center rod 41 rotates forward to reset and drives the four bevel gears 62 and the two worms 61, the screw 63 and the turbine 64 to reset together. The two thread resets drive the two lifting supports 66 to reset.After the reset is completed, the control module 31 turns off the electric push rod 44 and the servo motor 51.

[0033] Embodiment 2: Based on embodiment 1, Figure 8 As shown, it also includes a supporting mechanism, which is arranged on the folding plate 42, and is used to enhance the supporting force of the folding plate 42 on the cargo frame 8. The supporting mechanism includes a supporting seat 91, two supporting seats 91 are welded on one side of the frame 1, and two fixed slide bars 92 are welded on the side of the folding plate 42 away from the cargo frame 8. The two fixed slide bars 92 are slidably connected with a sliding seat 93, and a swing rod 94 is rotatably connected between the sliding seat 93 on the same side and the supporting seat 91 on the same side.

[0034] When the push rod of the electric push rod 44 pushes the fixed seat 46 and the folding plate 42 to rotate around the center rod 41, the folding plate 42 drives the two fixed sliding rods and the two sliding seats 93 to rotate together, and the rotation of the two sliding seats 93 drives the swing rod 94 to rotate around the support seat 91. Since the center points of rotation of the sliding seat 93 and the swing rod 94 are different, when the two sliding seats 93 drive the swing rod 94 to rotate, the two sliding seats 93 move along the fixed sliding rod 92, and the bottoms of the two swing rods 94 are in contact with the support seat 91. The two swing rods 94 are supported by the two support seats 91, so that the folding plate 42 is supported away from the bottom of the support plate 3, so that the folding plate 42 can unload the cargo frame 8 more smoothly, thereby further accelerating the unloading speed of the cargo frame 8.

[0035] Embodiment 3: Based on embodiment 2, Figure 6 As shown, a pulley 10 is also included. A plurality of pulleys 10 are rotatably connected to the two lifting supports 66 . The plurality of pulleys 10 are used to reduce the friction between the lifting supports 66 and the cargo frame 8 .

[0036] When the conveyor belt 510 reverses and drives the cargo frame 8 to move toward the lifting support 66, the cargo frame 8 will contact the pulley 10 on the upper surface of the lifting support 66. The pulley 10 reduces the friction between the cargo frame 8 and the upper surface of the lifting support 66, thereby making the cargo frame 8 smoother during the unloading process, further accelerating the speed of unloading the cargo frame 8.

[0037] The above is a detailed introduction to the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An AGV trolley for rapid unloading, characterized in that: The invention comprises a vehicle frame (1), wherein four universal wheels (2) are fixedly connected to the bottom of the vehicle frame (1), a support plate (3) is fixedly connected to the top of the vehicle frame (1), a control module (31) is fixedly connected to the support plate, a folding mechanism is provided on the support plate (3), a conveying mechanism is provided on the folding mechanism, a lifting mechanism is provided on the folding mechanism, a cargo frame (8) is provided on the folding mechanism, the folding mechanism is used to facilitate unloading of cargo from the cargo frame (8), the conveying mechanism is used to convey the cargo frame (8), and the lifting mechanism is used to lift the cargo frame (8).

2. The AGV for rapid unloading according to claim 1, characterized in that: The folding mechanism comprises a center rod (41), two center rods (41) are fixedly connected to one side of the support plate (3), the two center rods (41) are symmetrically arranged, a folding plate (42) is rotatably connected between the two center rods (41), two electric push rods (44) are fixedly connected to the side of the support plate (3) away from the folding plate (42), two fixed seats (46) are fixedly connected to the side of the folding plate (42) close to the support plate (3), and the telescopic rods of the electric push rods (44) on the same side are rotatably connected to the fixed seats (46) on the same side.

3. The AGV for rapid unloading according to claim 2 is characterized in that: The conveying mechanism comprises a servo motor (51), the servo motor (51) is fixedly connected to the frame (1), two conveying shafts (52) are rotatably connected to the support plate (3), a plurality of support rollers (53) are rotatably connected to the support plate (3), the plurality of support rollers (53) are located between the two conveying shafts (52), a conveyor belt (54) is wound between the two conveying shafts (52), two center rods (41) are rotatably connected to intermediate gears (55), the folding plate (42) is rotatably connected to two transmission shafts (56), one side of the two transmission shafts (56) Both are fixedly connected with pulleys (57), a belt (58) is wound between the two pulleys (57), a plurality of weight-supporting rods (59) are rotatably connected to the folding plate (42), the plurality of weight-supporting rods (59) are located between the two transmission shafts (56), a transmission belt (510) is wound between the two transmission shafts (56), a fixed gear (511) is fixedly connected to one side of the conveying shaft (52) and the transmission shaft (56) close to the servo motor (51), and the fixed gears (511) on the conveying shaft (52) and the transmission shaft (56) are meshed with the transfer gear (55).

4. The AGV for rapid unloading according to claim 3 is characterized in that: The conveyor belt (54) is made of rubber.

5. The fast unloading AGV according to claim 3 is characterized in that: The transmission belt (510) is made of rubber.

6. The AGV for rapid unloading according to claim 3, characterized in that: The plurality of support rollers (53) are all located inside the conveyor belt (54).

7. The AGV for rapid unloading according to claim 3 is characterized in that: A plurality of the weight-supporting rods (59) are located inside the conveyor belt (510).

8. The fast unloading AGV according to claim 3, characterized in that: The lifting mechanism comprises a worm (61), both sides of the folding plate (42) are rotatably connected to the worm (61), both ends of the transmission shaft (56) away from the servo motor (51) and one end of the two worms (61) close to the servo motor (51) are fixedly connected to bevel gears (62), the two bevel gears (62) are meshed, both sides of the folding plate (42) are rotatably connected to screw rods (63), the bottoms of the two screw rods (63) are fixedly connected to turbines (64), the turbines (64) and the worm (61) on the same side are meshed with each other, both sides of the folding plate (42) are fixedly connected to guide rods (65), the two screw rods (63) are threadedly connected to lifting supports (66), and the lifting supports (66) are slidably connected to the guide rods (65).

9. The AGV for rapid unloading according to claim 4, characterized in that: The vehicle also includes a support mechanism, the support mechanism being arranged on the folding plate (42), the support mechanism (9) being used to enhance the support force of the folding plate (42) on the cargo frame (8), the support mechanism (9) including a support seat (91), two support seats (91) being fixedly connected to one side of the vehicle frame (1), two fixed slide bars (92) being fixedly connected to the side of the folding plate (42) away from the cargo frame (8), both fixed slide bars (92) being slidably connected to a slide seat (93), and a swinging rod (94) being rotatably connected between the slide seat (93) and the support seat (91) on the same side.

10. The fast unloading AGV according to claim 5, characterized in that: It also includes a pulley (10), and the two lifting supports (66) are rotatably connected to a plurality of the pulleys (10), and the plurality of the pulleys (10) are used to reduce the friction between the lifting supports (66) and the cargo frame (8).

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