Plate frame conveying mechanism of inclined vertical plate placing machine

Abstract

The utility model discloses a grillage conveying mechanism of an inclined vertical type plate placing machine, which relates to the technical field of plate placing machines and comprises a rack, and a case is fixedly mounted on one side of the rack; the conveying assembly is arranged on the rack; the deviation rectifying mechanism is arranged on the rack; the discharging assembly is arranged at the discharging end of the rack, and a transmission assembly is arranged at one end of the discharging assembly and one end of the conveying assembly; the discharging assembly comprises a first U-shaped frame fixedly installed on the inner wall of the discharging end of the rack, guide grooves are formed in the two ends of the first U-shaped frame, and movable sleeves are arranged on the inner walls of the guide grooves in a sliding mode. Height adjustment of the upper discharging roller can be achieved, the distance between the upper discharging roller and the lower discharging roller can be flexibly adjusted in cooperation with the lower discharging roller, and discharging operation of plates with different thicknesses can be adapted; and the adaptability is high, stable power transmission can be kept, and the continuity of the discharging link is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of plate feeding machine technology, and in particular to a plate frame conveying mechanism for an inclined vertical plate feeding machine. Background Technology

[0002] Inclined vertical plate feeding machine is a commonly used automated equipment in the field of sheet metal processing and production. It is mainly used to store and transport sheet metal (such as printed circuit boards, metal boards, plastic boards, etc.) in an inclined vertical state so that the sheet metal can be transferred to the subsequent processing steps in an orderly manner, thereby meeting the needs of automated production.

[0003] Currently, board feeding machines play a crucial role in the production and processing of printed circuit boards and other boards. However, the existing inclined vertical board feeding machine's board conveying mechanism has some shortcomings: for example, the existing board conveying mechanism has certain limitations in adapting to the conveying of boards of different sizes, and the adjustment is not flexible and convenient enough, making it difficult to meet diverse production needs. Therefore, it is urgent to design a board conveying mechanism for an inclined vertical board feeding machine to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a plate conveying mechanism for an inclined vertical plate feeding machine. Its advantages include adjustable height of the upper discharge roller, which, in conjunction with the lower discharge roller, allows for flexible adjustment of the distance between them, enabling it to adapt to the discharge operation of plates of different thicknesses and demonstrating strong adaptability.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A plate conveying mechanism for an inclined vertical plate feeding machine includes:

[0007] A frame, on one side of which a chassis is fixedly mounted;

[0008] A conveying assembly, which is mounted on a frame;

[0009] A correction mechanism, which is mounted on the frame;

[0010] The discharge assembly is located at the discharge end of the frame, and a transmission assembly is provided at one end of the discharge assembly and one end of the conveying assembly;

[0011] The discharge assembly includes a first U-shaped frame fixedly installed on the inner wall of the discharge end of the frame, and guide grooves are provided at both ends of the first U-shaped frame. Movable sleeves slide on the inner walls of the guide grooves. The inner walls of the movable sleeves are rotatably connected to the mounting shaft through bearings, and an upper discharge roller is fixedly installed at the middle of the mounting shaft. A lifting assembly for adjusting the height of the two movable sleeves is provided on the first U-shaped frame.

[0012] The above technical solutions enable the entire plate conveying mechanism to adapt to the conveying of plates of different sizes, with flexible and convenient adjustments to meet diverse production needs.

[0013] The present invention is further configured such that the conveying assembly includes a first conveying shaft rotatably arranged at equal distances on the frame, and a plurality of conveying wheels are fixedly installed on the outer wall of the first conveying shaft; a second conveying shaft is rotatably arranged on one side of the inner wall of the discharge end of the frame, and a lower discharge roller is fixedly installed on the outer wall of the second conveying shaft; a conveying motor is fixedly installed on one side of the inner wall of the frame, and a transmission shaft is rotatably arranged on one side of the outer wall of the frame; gears are fixedly installed on the outer wall of the transmission shaft, the outer wall of the output shaft of the conveying motor, one end of the first conveying shaft, and one end of the second conveying shaft; and gears are connected by a toothed chain.

[0014] The above technical solutions ensure that the sheet metal is subjected to uniform force and runs smoothly during transportation.

[0015] The present invention is further configured such that the correction mechanism includes through slots on both sides of the frame, and mounting brackets are fixedly installed on the inner walls of the through slots. Driven wheels are rotatably connected to the top sides of the two mounting brackets. Two parallel drive belts are connected between the four driven wheels. A first forward and reverse motor for driving the two driven wheels to rotate is fixedly installed on the bottom sides of one of the mounting brackets. Mounting components are fixedly installed on the outer walls of the two drive belts, and movable plates are fixedly installed on the top of the mounting components. Movable frames are fixedly installed on the top sides of the movable plates, and correction plates are provided on the top of the movable frames. Correction rods are fixedly installed at equal intervals on the bottom of the correction plates, and the positions of the correction rods are staggered with the position of the first conveying shaft.

[0016] The above technical solutions can adapt to boards of different widths, thereby adjusting their position during the board conveying process and preventing board deviation.

[0017] The present invention is further configured such that two guide rods are fixedly installed on the inner wall of the frame, and guide sleeves are fixedly installed at both ends of the bottom of the guide rods, with the guide sleeves fitted onto the guide rods.

[0018] Through the above technical solutions, the cooperation between the guide rod and the guide sleeve further improves the stability of the movement of the movable plate and the correction plate, ensuring that the correction action is accurate and effective, and improving the precision of subsequent processing.

[0019] The present invention is further configured such that the lifting assembly includes a fixed frame fixedly installed at the middle of the top of the first U-shaped frame, and a threaded column is rotatably connected to the middle of the fixed frame and the middle of the first U-shaped frame. A second forward and reverse motor for driving the threaded column to rotate is fixedly installed on the top of the fixed frame. A second U-shaped frame is screwed to the outer wall of the threaded column, and the bottom two ends of the second U-shaped frame are respectively fixedly connected to the top end of two movable sleeves. Two guide holes are opened on the top of the first U-shaped frame for the second U-shaped frame to pass through.

[0020] The above technical solutions enable height adjustment of the upper discharge roller, and the distance between the two can be flexibly adjusted in conjunction with the lower discharge roller, making it adaptable to the discharge operation of plates of different thicknesses and highly adaptable.

[0021] The present invention is further configured such that the transmission assembly includes a movable seat slidably disposed at one end of the outer wall of one side of the first U-shaped frame, and a connecting shaft is rotatably connected to one side of the movable seat. Small transmission wheels are fixedly installed at one end of the connecting shaft and one end of the mounting shaft. A large transmission wheel is fixedly installed on one side of the outer wall of the second conveying shaft. A transmission belt is drivingly connected to the outer wall of the large transmission wheel and the outer walls of the two small transmission wheels. A fixing sleeve is fixed on one side of the outer wall of the first U-shaped frame, and a T-shaped column passing through the fixing sleeve is fixed on the top of the movable seat. A spring is fixedly installed at the bottom of the fixing sleeve and the top of the movable seat.

[0022] The above technical solutions enable the synchronous operation of the second conveyor shaft and the installation shaft.

[0023] The present invention is further configured such that a discharge sleeve is fixedly installed on the outer wall of the upper discharge roller, and the outer wall of the discharge sleeve has grooves distributed at equal intervals, and the discharge sleeve is designed to be made of rubber.

[0024] The above technical solutions increase the friction with the sheet material to ensure reliable conveying and avoid scratches or damage to the sheet material surface caused by hard contact.

[0025] The present invention is further configured such that a controller is fixedly installed on the chassis, and the controller is electrically connected to the first forward and reverse motor, the second forward and reverse motor and the conveyor motor.

[0026] The above technical solutions enable automated control of actions such as conveying, deviation correction, and discharge height adjustment.

[0027] The beneficial effects of this utility model are as follows:

[0028] 1. In the discharge assembly of this application, the upper discharge roller is height-adjustable through a lifting assembly (second forward and reverse motor, threaded column, second U-shaped frame, etc.), and the distance between the two can be flexibly adjusted in conjunction with the lower discharge roller, which can adapt to the discharge operation of plates of different thicknesses and has strong adaptability.

[0029] 2. In the correction mechanism of this application, the drive belt is driven by the first forward and reverse motor, which can adjust the position of the movable plate and the correction plate, so that the correction plate can adapt to plates of different widths. This solves the problem of poor adaptability of traditional conveying mechanisms to plate size, and the position of the plate can be adjusted during the conveying process to prevent the plate from shifting.

[0030] 3. In this application, the conveying assembly drives multiple first conveying shafts and conveying wheels to operate synchronously through a conveying motor, gears, and toothed chains, ensuring that the board is subjected to uniform force and runs smoothly during the conveying process. In conjunction with the transmission assembly, a large transmission wheel, a small transmission wheel, and a transmission belt are used. At the same time, through the design of movable seats, springs, and T-shaped columns, stable power transmission can still be maintained when the height of the upper discharge roller is adjusted, ensuring the continuity of the discharge process. Furthermore, the rubber discharge sleeve and surface groove design on the outer wall of the upper discharge roller can increase the friction with the board to ensure reliable conveying, and can also avoid hard contact that could cause scratches or pressure damage to the surface of the board. This is especially suitable for conveying precision boards such as printed circuit boards. Attached Figure Description

[0031] Figure 1 This is a perspective view of the plate frame conveying mechanism of an inclined vertical plate feeding machine proposed in this utility model;

[0032] Figure 2 This is a schematic diagram of the gear and chain structure of the plate frame conveying mechanism of an inclined vertical plate feeding machine proposed in this utility model.

[0033] Figure 3 This is a schematic diagram of the correction mechanism of the plate frame conveying mechanism of the inclined vertical plate feeding machine proposed in this utility model.

[0034] Figure 4 This is a schematic diagram of the discharge component structure of the plate frame conveying mechanism of the inclined vertical plate feeding machine proposed in this utility model;

[0035] Figure 5 A schematic diagram of the threaded column and spring structure of the plate frame conveying mechanism of the inclined vertical plate feeding machine proposed in this utility model;

[0036] Figure 6 This is a schematic diagram of the conveying motor and lower discharge roller structure of the plate frame conveying mechanism of an inclined vertical plate feeding machine proposed in this utility model.

[0037] In the diagram: 1. Chassis; 2. Frame; 3. First conveyor shaft; 4. Conveyor wheel; 5. Correction mechanism; 51. First forward / reverse motor; 52. Through slot; 53. Guide rod; 54. Drive belt; 55. Mounting component; 56. Guide sleeve; 57. Movable plate; 58. Movable frame; 59. Correction plate; 510. Correction rod; 511. Mounting frame; 6. Discharge assembly; 61. First U-shaped frame; 62. Second U-shaped frame; 63. 64. Second reversible motor; 65. Fixed frame; 66. Discharge sleeve; 67. Movable sleeve; 68. Mounting shaft; 69. Upper discharge roller; 60. Guide groove; 610. Threaded column; 71. Transmission assembly; 72. Fixed sleeve; 73. Movable seat; 74. Transmission belt; 75. Large transmission wheel; 76. Small transmission wheel; 77. T-shaped column; 78. Spring; 9. Gear; 10. Toothed chain; 11. Conveyor motor; 12. Lower discharge roller. Detailed Implementation

[0038] The technical solution of this utility model will be further described in detail below with reference to specific embodiments.

[0039] Reference Figures 1-6 This utility model provides a plate frame conveying mechanism for an inclined vertical plate feeding machine, including a frame 2, a conveying assembly, a correction mechanism 5, and a discharge assembly 6. A housing 1 is fixedly installed on one side of the frame 2.

[0040] The conveying assembly is mounted on the frame 2. The conveying assembly includes a first conveying shaft 3 that is rotatably mounted on the frame 2 at equal intervals, and multiple conveying wheels 4 are fixedly installed on the outer wall of the first conveying shaft 3. A second conveying shaft is rotatably mounted on one side of the inner wall of the discharge end of the frame 2, and a lower discharge roller 11 is fixedly mounted on the outer wall of the second conveying shaft. A conveying motor 10 is fixedly mounted on one side of the inner wall of the frame 2, and a drive shaft is rotatably mounted on one side of the outer wall of the frame 2. Gears 8 are fixedly mounted on the outer wall of the drive shaft, the outer wall of the output shaft of the conveying motor 10, one end of the first conveying shaft 3, and one end of the second conveying shaft. A toothed chain 9 is connected between the gears 8. The multiple first conveying shafts 3 and conveying wheels 4 are driven to operate synchronously through the transmission of the conveying motor 10, gears 8, and toothed chain 9 in the conveying assembly, ensuring that the sheet material is subjected to uniform force and runs smoothly during the conveying process.

[0041] The correction mechanism 5 is mounted on the frame 2, the discharge assembly 6 is mounted on the discharge end of the frame 2, and a transmission assembly 7 is mounted on one end of the discharge assembly 6 and one end of the conveying assembly.

[0042] The discharge assembly 6 includes a first U-shaped frame 61 fixedly installed on the inner wall of the discharge end of the frame 2. Both ends of the first U-shaped frame 61 are provided with guide grooves 69, and movable sleeves 66 slide along the inner walls of the guide grooves 69. An installation shaft 67 is rotatably connected to the inner wall of the movable sleeves 66 via bearings, and an upper discharge roller 68 is fixedly installed at the middle of the installation shaft 67. A lifting assembly for adjusting the height of the two movable sleeves 66 is provided on the first U-shaped frame 61. The lifting assembly includes a fixed frame 64 fixedly installed at the middle of the top of the first U-shaped frame 61. A threaded post 610 is rotatably connected to the middle of the fixed frame 64 and the middle of the first U-shaped frame 61. A second forward / reverse motor 63 for driving the threaded post 610 to rotate is fixedly installed on the top of the fixed frame 64. A second U-shaped frame 62 is screwed to the outer wall of the threaded post 610, and the bottom ends of the second U-shaped frame 62 are respectively fixedly connected to the top ends of two movable sleeves 66. The top of the first U-shaped frame 61 has two guide holes for the second U-shaped frame 62 to pass through. The transmission assembly 7 includes a component slidably disposed on the first U-shaped frame 61. A movable seat 72 is located on one side of the outer wall of the second conveyor shaft. A connecting shaft is rotatably connected to one side of the movable seat 72. Small transmission wheels 75 are fixedly installed on one end of the connecting shaft and one end of the mounting shaft 67. A large transmission wheel 74 is fixedly installed on one side of the outer wall of the second conveyor shaft. A transmission belt 73 is drivingly connected to the outer wall of the large transmission wheel 74 and the outer walls of the two small transmission wheels 75. A fixing sleeve 71 is fixed on one side of the outer wall of the first U-shaped frame 61. A T-shaped column 76 passing through the fixing sleeve 71 is fixed to the top of the movable seat 72. The bottom of the fixing sleeve 71 is connected to the movable seat 72. A spring 77 is fixedly installed at the top. The height can be adjusted by the second forward and reverse motor 63, threaded column 610, and second U-shaped frame 62 of the lifting assembly. The distance between the two can be flexibly adjusted in conjunction with the lower discharge roller 11, which can adapt to plates of different thicknesses. Through the cooperation of the large transmission wheel 74, small transmission wheel 75 and transmission belt 73 in the transmission assembly 7, and through the design of the movable seat 72, spring 77 and T-shaped column 76, stable power transmission can still be maintained when the height of the upper discharge roller 68 is adjusted, ensuring the continuity of the discharge process.

[0043] To prevent the board from shifting, refer to... Figure 1 , Figure 2 and Figure 3The correction mechanism 5 includes through slots 52 on both sides of the frame 2, and mounting brackets 511 are fixedly installed on the inner walls of the through slots 52. Driven wheels are rotatably connected to the top sides of the two mounting brackets 511. Two parallel drive belts 54 are connected between the four driven wheels. A first forward and reverse motor 51 for driving the two driven wheels to rotate is fixedly installed on the bottom sides of one of the mounting brackets 51. Mounting members 55 are fixedly installed on the outer walls of the two drive belts 54, and movable plates 57 are fixedly installed on the top of the mounting members 55. Movable frames 58 are fixedly installed on the top sides of the movable plates 57, and the top of the movable frames 58... Each part is equipped with a correction plate 59, and the bottom of the correction plate 59 is fixedly installed with correction rods 510 distributed at equal intervals. The position of the correction rods 510 intersects with the position of the first conveying shaft 3. Two guide rods 53 are fixedly installed on the inner wall of the frame 2, and guide sleeves 56 are fixedly installed at both ends of the bottom of the guide rods 53. The guide sleeves 56 are sleeved on the guide rods 53. The first forward and reverse motor 51 in the correction mechanism 5 drives the drive belt 54 to rotate, which can adjust the position of the movable plate 57 and the correction plate 59, so that the correction plate 59 can adapt to the plate of different widths, thereby adjusting its position during the plate conveying process and preventing the plate from shifting.

[0044] To protect the board material, refer to Figure 1 , Figure 4 and Figure 5 The outer wall of the upper discharge roller 68 is fixedly installed with a discharge sleeve 65, and the outer wall of the discharge sleeve 65 has grooves distributed at equal intervals. The discharge sleeve 65 is designed to be made of rubber. Through the rubber material discharge sleeve 65 and the surface groove design of the outer wall of the upper discharge roller 68, the friction with the board can be increased to ensure reliable conveying, and hard contact can be avoided to prevent scratches or pressure damage to the surface of the board. It is especially suitable for conveying precision boards such as printed circuit boards.

[0045] To achieve automated operation, refer to Figure 1 A controller is fixedly installed on the chassis 1, and the controller is electrically connected to the first forward and reverse motor 51, the second forward and reverse motor 63 and the conveyor motor 10. The controller can automatically control the first forward and reverse motor 51, the second forward and reverse motor 63 and the conveyor motor 10 to realize the automated control of actions such as conveying, correction and discharge height adjustment, reduce manual operation and improve production efficiency.

[0046] Working principle: During use, the conveyor motor 10, gear 8 and toothed chain 9 in the conveyor assembly drive multiple first conveyor shafts 3 and conveyor wheels 4 to operate synchronously, ensuring that the plate is subjected to uniform force and runs smoothly during the conveying process. The first forward and reverse motor 51 in the correction mechanism 5 drives the drive belt 54 to operate, which can adjust the position of the movable plate 57 and the correction plate 59, so that the correction plate 59 can adapt to plates of different widths, thereby adjusting its position during the conveying process and preventing the plate from shifting.

[0047] During discharge, the upper discharge roller 68 achieves height adjustment through the second forward and reverse motor 63, threaded column 610, and second U-shaped frame 62 of the lifting assembly. In conjunction with the lower discharge roller 11, the distance between the two can be flexibly adjusted to accommodate plates of different thicknesses. Through the cooperation of the large transmission wheel 74, small transmission wheel 75, and transmission belt 73 in the transmission assembly 7, and through the design of the movable seat 72, spring 77, and T-shaped column 76, stable power transmission can still be maintained when the height of the upper discharge roller 68 is adjusted, ensuring the continuity of the discharge process. Furthermore, the rubber discharge sleeve 65 on the outer wall of the upper discharge roller 68 and the surface groove design can increase the friction with the plate to ensure reliable conveying, and avoid scratches or pressure damage to the plate surface caused by hard contact. It is especially suitable for conveying precision plates such as printed circuit boards.

[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A plate conveying mechanism for an inclined vertical plate feeding machine, characterized in that, include: A frame (2) is provided, and a housing (1) is fixedly installed on one side of the frame (2). A conveying assembly is mounted on a frame (2); Correction mechanism (5), said correction mechanism (5) is mounted on frame (2); The discharge assembly (6) is located at the discharge end of the frame (2), and a transmission assembly (7) is provided at one end of the discharge assembly (6) and one end of the conveying assembly. The discharge assembly (6) includes a first U-shaped frame (61) fixedly installed on the inner wall of the discharge end of the frame (2), and both ends of the first U-shaped frame (61) are provided with guide grooves (69). The inner wall of the guide grooves (69) is slidably provided with movable sleeves (66). The inner wall of the movable sleeves (66) is rotatably connected to the mounting shaft (67) through the bearing, and the upper discharge roller (68) is fixedly installed at the middle of the mounting shaft (67). The first U-shaped frame (61) is provided with a lifting assembly for adjusting the height of the two movable sleeves (66).

2. The plate conveying mechanism of the inclined vertical plate feeding machine according to claim 1, characterized in that, The conveying assembly includes a first conveying shaft (3) rotatably mounted on the frame (2) at equal distances, and multiple conveying wheels (4) are fixedly installed on the outer wall of the first conveying shaft (3). A second conveying shaft is rotatably mounted on one side of the inner wall of the discharge end of the frame (2), and a lower discharge roller (11) is fixedly mounted on the outer wall of the second conveying shaft. A conveying motor (10) is fixedly mounted on one side of the inner wall of the frame (2), and a transmission shaft is rotatably mounted on one side of the outer wall of the frame (2). Gears (8) are fixedly mounted on the outer wall of the transmission shaft, the outer wall of the output shaft of the conveying motor (10), one end of the first conveying shaft (3), and one end of the second conveying shaft. A toothed chain (9) is connected between the gears (8).

3. The plate frame conveying mechanism of the inclined vertical plate feeding machine according to claim 2, characterized in that, The correction mechanism (5) includes through slots (52) on both sides of the frame (2), and mounting brackets (511) are fixedly installed on the inner walls of the through slots (52). Driven wheels are rotatably connected to the top sides of the two mounting brackets (511). Two parallel drive belts (54) are connected between the four driven wheels. A first forward and reverse motor (51) for driving the two driven wheels to rotate is fixedly installed on the bottom sides of one of the mounting brackets (511). Mounting parts (55) are fixedly installed on the outer walls of the two drive belts (54), and movable plates (57) are fixedly installed on the top of the mounting parts (55). Movable frames (58) are fixedly installed on the top sides of the movable plates (57), and correction plates (59) are provided on the top of the movable frames (58). Correction rods (510) are fixedly installed at equal intervals at the bottom of the correction plates (59). The positions of the correction rods (510) and the positions of the first conveying shaft (3) are staggered.

4. The plate frame conveying mechanism of the inclined vertical plate feeding machine according to claim 3, characterized in that, Two guide rods (53) are fixedly installed on the inner wall of the frame (2), and guide sleeves (56) are fixedly installed at both ends of the bottom of the guide rods (53), with the guide sleeves (56) fitted on the guide rods (53).

5. The plate conveying mechanism of the inclined vertical plate feeding machine according to claim 4, characterized in that, The lifting assembly includes a fixed frame (64) fixedly installed at the middle of the top of the first U-shaped frame (61), and a threaded column (610) is rotatably connected to the middle of the first U-shaped frame (61) at the middle of the fixed frame (64). A second forward and reverse motor (63) for driving the threaded column (610) to rotate is fixedly installed on the top of the fixed frame (64). A second U-shaped frame (62) is screwed to the outer wall of the threaded column (610), and the bottom ends of the second U-shaped frame (62) are respectively fixedly connected to the top ends of two movable sleeves (66). The top of the first U-shaped frame (61) has two guide openings for the second U-shaped frame (62) to pass through.

6. The plate conveying mechanism of the inclined vertical plate feeding machine according to claim 1, characterized in that, The transmission assembly (7) includes a movable seat (72) slidably disposed at one end of the outer wall of the first U-shaped frame (61), and a connecting shaft is rotatably connected to one side of the movable seat (72). Small transmission wheels (75) are fixedly installed at one end of the connecting shaft and one end of the mounting shaft (67). A large transmission wheel (74) is fixedly installed on one side of the outer wall of the second conveying shaft. A transmission belt (73) is drivingly connected to the outer wall of the large transmission wheel (74) and the outer walls of the two small transmission wheels (75). A fixed sleeve (71) is fixed on one side of the outer wall of the first U-shaped frame (61), and a T-shaped column (76) passing through the fixed sleeve (71) is fixed on the top of the movable seat (72). A spring (77) is fixedly installed at the bottom of the fixed sleeve (71) and the top of the movable seat (72).

7. The plate frame conveying mechanism of the inclined vertical plate feeding machine according to claim 1, characterized in that, The upper discharge roller (68) is fixedly installed with a discharge sleeve (65), and the outer wall of the discharge sleeve (65) is provided with grooves distributed at equal intervals. The discharge sleeve (65) is designed to be made of rubber.

8. The plate frame conveying mechanism of the inclined vertical plate feeding machine according to claim 1, characterized in that, A controller is fixedly installed on the chassis (1), and the controller is electrically connected to the first forward and reverse motor (51), the second forward and reverse motor (63), and the conveyor motor (10).

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