CN207645731U - A kind of transport vehicle - Google Patents

Abstract

The utility model discloses a transport vehicle, which comprises a lifting platform, a power device of the lifting platform, a steering motor, a bottom plate, an encoder, a controller and steering wheels; The bottom of the lifting platform; both sides of the lifting platform are provided with steering motors and encoders; the controller is arranged on the side of the encoder, and the steering motors and encoders are connected to the controller; the lower surface of the bottom plate is provided with steering wheels, and the steering motor Drive the steering wheel to turn. The utility model effectively improves the steering ability of the transport vehicle by setting the steering motor, and realizes 360-degree steering; at the same time, it cooperates with the encoder to make the steering precision high. The utility model is also provided with a lifting platform, so that the transport vehicle has the ability to lift heavy objects; The rear wheel lifting mechanism of the utility model improves the balance ability of the transport vehicle, and avoids the problem of cargo dumping caused by the poor balance of the transport vehicle during operation.

Description

a transport vehicle

technical field

The utility model belongs to the technical field of mechanical devices and transportation, in particular to a transportation vehicle.

Background technique

There are many types of existing transport vehicles, each of which has different functions and strong transport capacity, and the transport vehicles are used in all aspects of social life. But there are also some problems in existing transport vehicles:

1. The steering ability is limited. Due to the limitations of the mechanical structure, it is impossible to realize the 360-degree steering of the transport vehicle.

2. The limited control ability of the control system makes the steering precision not high, and it is impossible to realize the precise steering of the transport vehicle.

3. In some cases, the heavy objects on the transport vehicle need to be lifted, but the existing transport vehicles are not capable of lifting heavy objects and cannot meet the needs of some actual situations.

4. Some heavy objects are directly installed on the transport vehicle. When the heavy object is working on the transport vehicle, if the center of gravity of the heavy object deviates from the body of the transport vehicle, the balance of the transport vehicle cannot be guaranteed, which will affect the work of the heavy object.

Utility model content

The purpose of this utility model is to provide a transport vehicle to solve the above problems.

In order to achieve the above object, the utility model adopts the following technical solutions:

A transport vehicle, comprising a lifting platform, a lifting platform power device, a steering motor, a base plate, an encoder, a controller, and steering wheels; the lifting platform is arranged in the middle of one end of the upper surface of the base plate, and the lifting platform power device is arranged at the bottom of the lifting platform; Both sides of the lifting platform are provided with a steering motor and an encoder; the controller is arranged on the side of the encoder, and the steering motor and the encoder are connected to the controller; the lower surface of the bottom plate is provided with a steering wheel, and the steering motor drives the steering wheel to turn.

Further, the lifting platform includes a lifting column shell, a lifting column inner tube, a lifting column outer tube top plate, a lifting column inner tube top plate, a push rod, a hollow shaft and a driven bevel gear; the lifting column shell is sleeved on the outside of the lifting column inner tube, and There is a gap between the shell of the lifting column and the inner cylinder of the lifting column; the hollow shaft is arranged in the inner cylinder of the lifting column, the bottom of the hollow shaft is vertically arranged on the bottom plate of the shell of the lifting column through the bearing, and the hollow shaft is provided with internal threads; the push rod is provided with an external thread, the push rod and the hollow shaft are threadedly connected; the top of the push rod is fixedly connected with the top plate of the inner tube of the lifting column through bolts, and the top plate of the inner tube of the lifting column is connected with the top plate of the outer tube of the lifting column through bolts; the bottom of the hollow shaft is set with a driven cone gear.

Further, the lifting platform power device includes a motor, a driving bearing, a coupling, a driving shaft and a driving bevel gear; the output shaft of the motor is connected to the coupling, the coupling is connected to the driving bearing, the driving shaft is fixedly connected to the driving shaft, and the driving shaft A driving bevel gear is fixedly arranged on the top, and the driving bevel gear meshes with the driven bevel gear.

Further, a linear guide rail is provided on the inner wall of the housing of the lifting column, and a slider is provided in the linear guide rail, and the slider is fixedly connected with the inner tube of the lifting column.

Further, the steering motor and the encoder are fixed on both sides of the lifting platform through the motor frame; the output end of the steering motor is provided with a first gear; the top of the steering wheel and the bottom plate are provided with a second gear; the first gear and the second gear meshing; the bottom surface of the bottom plate is provided with the position of the steering wheel, and a synchronous wheel is also provided, and the synchronous wheel meshes with the second gear; the bottom plate on the side of the synchronous wheel is provided with a driving wheel, and the driving wheel is used to drive the steering motor.

Further, a handle is provided at the end of the bottom plate provided with one end of the lifting platform, and a rear wheel lifting mechanism is provided at the lower end of the handle; the rear wheel lifting mechanism is used to control the lifting of the rear wheels.

Further, the rear wheel lifting mechanism includes a ferrule shaft, a ferrule, a first connecting rod, a second connecting rod, a terminal fixed shaft, a rear wheel shaft and a third connecting rod; the terminal fixed shaft is arranged on the lower surface of the base plate, and the terminal fixed shaft passes The connecting piece is connected with the rear axle; the handle is connected with the ferrule through the ferrule shaft; the first connecting rod is connected to the bottom plate through the ferrule shaft, and the first connecting rod and the second connecting rod are hinged; the second connecting rod and the third The connecting rod is connected on the rear axle, and the two ends of the rear axle are provided with rear wheels.

Further, the front wheel is provided on the lower surface of the bottom plate at the end where the handle is not installed through the fixing bracket; a wire stripper is arranged on the fixing bracket.

Compared with the prior art, the utility model has the following technical effects:

The utility model effectively improves the steering ability of the transport vehicle by setting the steering motor, and realizes 360-degree steering; at the same time, it cooperates with the encoder to make the steering precision high. The utility model is also provided with a lifting platform, so that the transport vehicle has the ability to lift heavy objects; The rear wheel lifting mechanism of the utility model improves the balance ability of the transport vehicle, and avoids the problem of cargo dumping caused by the poor balance of the transport vehicle during operation.

Description of drawings

Fig. 1 is the C-C sectional schematic diagram of the utility model.

Fig. 2 is a D-D sectional schematic diagram of the utility model.

Fig. 3 is a schematic diagram of the front view of the utility model.

Fig. 4 is a schematic view of the structure of the utility model viewed from above.

In the figure: 1. Handle, 2. Lifting column shell, 3. Lifting column inner tube, 4. Lifting column outer tube top plate, 5. Lifting column inner tube top plate, 6. Push rod, 7. Hollow shaft, 8. From Moving bevel gear, 9. Driving bevel gear, 10. Drive shaft, 11. Bearing, 12. Motor, 13. Chassis, 14. Front wheel, 15. Bottom plate of lifting column, 16. Steering wheel, 17. Coupling, 18 .Third link, 19. Second link, 20. Rear wheel, 21. First link, 22. Steering motor, 24. Linear guide rail, 25. Slider, 26. Synchronous gear, 28. Driving wheel, 29. Encoder, 30. Controller, 31. Bottom plate, 32. Fixed bracket, 33. Wire stripper, 34. Ferrule shaft, 35. Ferrule, 36. Rear axle, 38. End fixed shaft, 39. A gear, 40. a second gear.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

Please refer to Fig. 1-Fig. 4, a kind of transport vehicle, comprises lifting platform, lifting platform power unit, steering motor 22, base plate 31, encoder 29, controller 30 and steering wheel 16; Lifting platform is arranged on one end of base plate 31 upper surface The middle part of the lifting platform power unit is arranged at the bottom of the lifting platform; both sides of the lifting platform are provided with a steering motor 22 and an encoder 29; the controller 30 is arranged on the side of the encoder, and the steering motor 22 and the encoder 29 are connected to The controller 30; the lower surface of the bottom plate 31 is provided with a steering wheel 16, and the steering motor 22 drives the steering wheel 16 to turn.

The lifting platform includes the lifting column shell 2, the lifting column inner tube 3, the lifting column outer tube top plate 4, the lifting column inner tube top plate 5, the push rod 6, the hollow shaft 7 and the driven bevel gear 8; the lifting column shell 2 is set on the lifting column The outer side of the inner cylinder 3, and there is a gap between the lifting column shell 2 and the lifting column inner cylinder 3; the hollow shaft 7 is arranged in the lifting column inner cylinder 3, and the bottom of the hollow shaft 7 is vertically arranged on the bottom plate of the lifting column shell 2 through a bearing. The hollow shaft 7 is provided with an internal thread; the push rod 6 is provided with an external thread, and the push rod 6 is threadedly connected with the hollow shaft; the top of the push rod 6 is fixedly connected with the top plate 5 of the inner tube of the lifting column by bolts, and the top plate 5 of the inner tube of the lifting column is connected with the top plate of the inner tube of the lifting column. The top plate 4 of the outer cylinder of the lifting column is connected by bolts; the bottom of the hollow shaft 7 is provided with a driven bevel gear 8 .

The lifting platform power device includes a motor 12, a driving bearing 11, a coupling 17, a driving shaft 10 and a driving bevel gear 9; the output shaft of the motor 12 is connected to the coupling 17, and the coupling 17 is connected to the driving bearing 11, and The driving shaft 10 is fixedly connected, and the driving shaft 10 is fixedly provided with a driving bevel gear 9, and the driving bevel gear 9 meshes with the driven bevel gear 8.

A linear guide rail 24 is arranged on the inner side wall of the lifting column shell 2, and a slider 25 is arranged inside the linear guide rail 24, and the slider 25 is fixedly connected with the inner tube 3 of the lifting column.

The steering motor 22 and the encoder 29 are fixed on both sides of the lifting platform by the motor frame; the output end of the steering motor 22 is provided with a first gear 39; the top of the steering wheel 16 and the base plate 31 are provided with a second gear 40; The gear 39 meshes with the second gear 40; the bottom surface of the bottom plate 31 is provided with the position of the steering wheel 16, and a synchronous wheel 26 is also provided, and the synchronous wheel 26 meshes with the second gear 40; the bottom plate 31 on the side of the synchronous wheel 26 is provided with a drive wheel 28, the drive wheel 28 is used to drive the steering motor 22.

The base plate 31 end that is provided with lifting platform one end is provided with handle 1, and handle 1 lower end is provided with rear wheel elevating mechanism; Rear wheel elevating mechanism is used for controlling the lifting of rear wheel.

The rear wheel lifting mechanism comprises a ferrule shaft 34, a ferrule 35, the first connecting rod 21, the second connecting rod 19, the terminal fixed shaft 38, the rear wheel shaft 36 and the third connecting rod 18; the terminal fixed shaft 38 is arranged under the base plate 31 On the surface, the terminal fixed shaft 38 is connected with the rear wheel shaft 36 through the connector; the handle 1 is connected with the ferrule 35 through the ferrule shaft 34; the first connecting rod 21 is connected to the base plate through the ferrule shaft, and the first connecting rod 21 and The second connecting rod 19 is hinged; the second connecting rod 19 and the third connecting rod 18 are connected on the rear axle, and rear wheels 20 are arranged at both ends of the rear axle.

The front wheel 14 is provided on the lower surface of the bottom plate 31 where the end of the handle 1 is not installed through a fixed bracket 32 ; a wire stripper 33 is arranged on the fixed bracket 32 .

During use, push the handle 1 by hand, the front wheel 14 and the steering wheel 16 rotate, and the transport vehicle moves forward. Heavy objects are contained on the lifting column outer tube top plate 4. When the transport vehicle needs to turn, the driving wheel 28 is used to drive the steering motor 22, the steering motor 22 rotates, and then drives the first gear 39 to rotate, and the first gear 39 transmits the torque to the second gear 40 by means of meshing transmission. The second gear 40 drives the steering wheel 16 to rotate, and the steering wheel finally realizes the 360° steering of the transport vehicle; the encoder 29 used this time is a photoelectric encoder, which can perform non-contact measurement, and the photoelectric encoder measures the axis where the second gear 40 is located. The rotational displacement, and convert the rotational displacement into a series of digital pulse signals. These pulses are used to control the angular displacement, that is, to control the steering angle. The signal generated by the encoder 29 is transmitted to the control system, and the control system processes the signal generated by the encoder 29. The steering motor 22 is controlled to realize the precise steering of the transport vehicle; the steering wheels 16 are symmetrically arranged, and the wheels on both sides are independent, and the driving wheel encoder synchronous gear 26 ensures that the two steering wheels 16 can be synchronized when turning.

When the heavy object transported by the transport vehicle needs to be lifted or lowered, the lifting column works, and the motor 12 controls the rotation of the drive shaft 10 through the coupling 17, and then drives the driving bevel gear 9 on the drive shaft 10. The method drives the driven bevel gear 8 to rotate, thereby driving the hollow shaft 7 where the driven bevel gear 8 is located to rotate. The hollow shaft 7 and the push rod 6 are threaded, so that the push rod 6 moves up and down, and the push rod 6 moves up and down. Drive the top plate 5 of the inner tube of the lifting column connected with the push rod 6 to move up and down, and then realize the top plate 4 of the outer tube of the lifting column to move up and down, and finally realize the lifting of the heavy object; the inner tube 2 of the lifting column drives the slider 25 to move up and down on the linear guide rail 23 Movement, the SA30LE linear guide rail slider 24 assists the up and down movement of the inner cylinder 2 of the lifting column, and then assists the lifting of the heavy object.

The 30 connecting rods of the rear wheel support are connected on the base plate by the shaft where the ferrule is located, the 30 connecting rods of the rear wheel support and the 53 connecting rods of the rear wheel support are connected by the shaft, and the 53 connecting rods of the rear wheel support and the 80 connecting rods of the rear wheel support are connected at the rear On the wheel axle, the rear wheel is contained on the rear wheel axle. Push the handle forward, and the handle drives the 30 connecting rods of the rear wheel bracket to rotate around the axis where the ferrule is located. The support 80 connecting rods are connected, the rear wheel support 80 connecting rods rotate around the fixed shaft, the rotation of the rear wheel support 53 connecting rods and the rear wheel support 80 connecting rods realizes the downward movement of the rear axle, thereby driving the downward movement of the rear wheels, The rear wheel is in contact with the ground, and now the ferrule nut locks against the ferrule, and the ferrule fixes the axis of the ferrule, so the position of the handle is fixed, and the position of the rear wheel is fixed.

Claims (8)

1. a transport vehicle, is characterized in that, comprises lifting platform, lifting platform power unit, steering motor (22), base plate (31), encoder (29), controller (30) and steering wheel (16); The platform is arranged in the middle of one end of the upper surface of the base plate (31), and the lifting platform power device is arranged at the bottom of the lifting platform; both sides of the lifting platform are provided with steering motors (22) and encoders (29); the controller (30) is set On the encoder side, and the steering motor (22) and the encoder (29) are all connected to the controller (30); the lower surface of the base plate (31) is provided with a steering wheel (16), and the steering motor (22) drives the steering wheel ( 16) Steering. 2. A transport vehicle according to claim 1, characterized in that the lifting platform comprises a lifting column shell (2), a lifting column inner cylinder (3), a lifting column outer cylinder top plate (4), a lifting column inner cylinder top plate (5), push rod (6), hollow shaft (7) and driven bevel gear (8); the lifting column casing (2) is set on the outside of the lifting column inner tube (3), and the lifting column casing (2) and the lifting column casing (2) and the lifting column There is a gap between the column inner cylinders (3); the hollow shaft (7) is arranged in the lifting column inner cylinder (3), and the bottom of the hollow shaft (7) is vertically arranged on the bottom plate of the lifting column shell (2) through a bearing. (7) Internal threads are provided; the push rod (6) is provided with external threads, and the push rod (6) is threadedly connected with the hollow shaft; the top of the push rod (6) is fixedly connected with the inner tube top plate (5) of the lifting column by bolts , the lifting column inner tube top plate (5) is connected with the lifting column outer tube top plate (4) by bolts; the bottom of the hollow shaft (7) is sleeved with a driven bevel gear (8). 3. A kind of transport vehicle according to claim 2, characterized in that, the lifting platform power device includes a motor (12), a drive bearing (11), a shaft coupling (17), a drive shaft (10) and a driving bevel gear (9); the output shaft of the motor (12) connects the shaft coupling (17), and the shaft coupling (17) connects the driving bearing (11), and the driving shaft (11) is fixedly connected to the driving shaft (10), and the driving shaft (10 ) is fixedly provided with a driving bevel gear (9), and the driving bevel gear (9) meshes with the driven bevel gear (8). 4. A kind of transport vehicle according to claim 2, characterized in that, a linear guide rail (24) is provided on the inner side wall of the lifting column housing (2), and a slide block (25) is arranged in the linear guide rail (24), The slide block (25) is fixedly connected with the lifting column inner cylinder (3). 5. A kind of transportation vehicle according to claim 1, is characterized in that, steering motor (22) and encoder (29) are fixed on the both sides of lifting platform by motor frame; The output end of steering motor (22) is provided with The first gear (39); the second gear (40) is arranged between the top of the steering wheel (16) and the base plate (31); the first gear (39) and the second gear (40) mesh; the bottom plate (31) The position of the steering wheel (16) is provided on the surface, and a synchronous wheel (26) is also provided, and the synchronous wheel (26) meshes with the second gear (40); the bottom plate (31) on the side of the synchronous wheel (26) is provided with a driving wheel (28), the drive wheel (28) is used to drive the steering motor (22). 6. A kind of transport vehicle according to claim 1, characterized in that, a handle (1) is provided at the end of the bottom plate (31) provided with one end of the lifting platform, and a rear wheel lifting mechanism is provided at the lower end of the handle (1); The wheel lifting mechanism is used to control the lifting of the rear wheels. 7. A transport vehicle according to claim 6, characterized in that the rear wheel lifting mechanism comprises a ferrule shaft (34), a ferrule (35), a first connecting rod (21), a second connecting rod (19 ), the terminal fixed shaft (38), the rear wheel shaft (36) and the third connecting rod (18); the terminal fixed shaft (38) is arranged on the lower surface of the base plate (31), and the terminal fixed shaft (38) is connected with the Wheel shaft (36); handle (1) is connected with ferrule (35) by ferrule shaft (34); first connecting rod (21) connecting rod is connected on the base plate by ferrule shaft, first connecting rod (21) and The second connecting rod (19) is hinged; the second connecting rod (19) and the third connecting rod (18) are connected on the rear axle, and rear wheels (20) are arranged at both ends of the rear axle. 8. A kind of transport vehicle according to claim 6, characterized in that, the lower surface of the base plate (31) at one end of the handle (1) is not installed with front wheels (14) through the fixed bracket (32); the fixed bracket (32) ) is provided with a wire stripper (33).