Hydraulic four-wheel-drive mining transport vehicle

Abstract

The hydraulic four-wheel-drive mining transport vehicle comprises a vehicle frame, a cargo transporting box is arranged on the top of the vehicle frame, and wheels, an electric hydraulic pump, a power supply unit and a control unit are arranged at the bottom of the vehicle frame; the wheel bearing is connected with a wheel carrier, a worm and gear motor is arranged between the wheel carrier and the frame, a worm gear shaft of the worm and gear motor is fixedly connected with the upper surface of the wheel carrier, and the upper surface of the worm and gear motor is fixedly connected with the lower surface of the frame; the electric hydraulic pump is connected with a shunt motor, the shunt motor is connected with a hydraulic motor, the hydraulic motor is fixedly mounted on the wheel carrier, and the hydraulic motor drives the wheels to rotate; the top of the shock absorber is fixedly connected with the bottom of the cargo box, and the bottom of the shock absorber is fixedly connected with the frame. A worm and gear motor for adjusting steering and a hydraulic motor for driving are independently arranged on the wheels, so that the purposes of in-situ steering and transverse movement of the mining transport vehicle are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of mining transport vehicle equipment, and in particular to a mining transport vehicle capable of flexibly adjusting a moving direction. Background Art

[0002] Mine transport vehicles are specially designed for use in mineral resource mining fields such as mines and quarries. They are responsible for transporting materials and personnel. The operating sites of mine transport vehicles also involve underground operations, which are relatively small. Currently, mine transport vehicles are driving in narrow mine tunnels, and steering and turning around are extremely inconvenient. In addition, mine transport vehicles often drive on road conditions with large differences, such as hard coal rock and soft coal slime, and once a wheel is stuck, it is difficult for the mine transport vehicle to get out of trouble. Summary of the invention

[0003] The purpose of the present invention is to achieve the purpose of on-site steering and lateral movement of a mining transport vehicle by equipping the wheels with a worm gear motor for adjusting the steering and a driving hydraulic motor, so as to solve the problem that the mining transport vehicle is difficult to turn around and turn in a narrow mine tunnel in the above-mentioned background technology.

[0004] The specific technical solutions of the present invention are as follows: A hydraulic four-wheel drive mining transport vehicle comprises a frame, the top of the frame is equipped with a cargo box, the bottom is equipped with wheels, an electric hydraulic pump, a power supply unit and a control unit; the wheel bearing is connected to the wheel frame, a worm gear motor is arranged between the wheel frame and the frame, the worm shaft of the worm gear motor is fixedly connected to the upper surface of the wheel frame, and the upper surface of the worm gear motor is fixedly connected to the lower surface of the frame; the electric hydraulic pump is connected to a shunt motor, the shunt motors are respectively connected to hydraulic motors, the hydraulic motors are fixedly installed on the wheel frame, and the hydraulic motor drives the wheels to rotate; the frame is equipped with a shock absorber, the top of the shock absorber is fixedly connected to the bottom of the cargo box, and the bottom of the shock absorber is fixedly connected to the frame.

[0005] Furthermore, the wheel frame includes side fenders located on both sides of the wheel and a bearing plate located on the top of the wheel, the bearing plates are fixedly connected to the two side fenders respectively, and the two side fenders are connected to the wheel bearings respectively.

[0006] Furthermore, the turbine shaft of the worm gear motor is fixedly connected to the upper surface of the bearing plate, a connecting plate is provided on the top of the worm gear motor, and the connecting plate is connected to the lower surface of the frame via fasteners.

[0007] Furthermore, four wheel positions are provided at the bottom of the frame, the wheels are arranged in the wheel positions, the hydraulic motor is fixedly mounted on the side baffle plate located outside the wheels, and the hydraulic motor is connected to the shunt motor in parallel.

[0008] Furthermore, the shock absorber comprises a spring, the top and bottom of the spring are respectively fixedly connected with spring seats, the spring seat is provided with a limiting column, and the spring is sleeved on the limiting column.

[0009] Furthermore, the front and rear parts of the frame are respectively provided with protective plates, and two supporting frames are laterally arranged on the inner sides of the protective plates opposite to each other, and the supporting frames include two vertical beams and a cross beam, the tops of the two vertical beams are fixedly connected to the bottom of the frame, the bottoms of the two vertical beams are fixedly connected to the upper surface of the cross beam, the front end of the cross beam is fixedly connected to the inner facade of the protective plate, a slide groove is formed between the two vertical beams, and a rocker beam is slidably matched with the two relative slide grooves in the cross direction, the bottom surface of the rocker beam is connected to the spring seat located at the top of the spring by fastening screws, and the top surface of the rocker beam is fixedly connected to the cargo box.

[0010] Furthermore, the side elevation of the bolster beam is provided with a limiting groove adapted to the vertical beam.

[0011] Furthermore, hinge seats are laterally arranged on the top of the bolster beam, and the hinge seats are provided with an axial hole. The axial holes of the two hinge seats are perpendicular to each other. A connecting piece matched with the hinge seat is fixedly provided on the bottom of the cargo box, and the connecting piece is provided with an axial hole. The axial hole is provided with a pin shaft, and the hinge seat is connected to the connecting piece pin shaft.

[0012] Furthermore, the top surface of the hinge seat is an arc surface, and a blocking block is provided above the axial hole of the connecting member, and the bottom surface of the blocking block is in contact with the top surface of the hinge seat.

[0013] Furthermore, there is a height difference between two ends of the cross beam, wherein the end connected to the protective plate is higher than the end connected to the vertical beam.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the four wheels of the mining transport vehicle are independently driven by the hydraulic motors, and the wheels do not need to be connected by axles and drive bridges. Therefore, when the mining transport vehicle is traveling, the wheels can be turned within the range of ±90° under the drive of the worm gear motor. When the front wheel turns to +90° and the rear wheel turns to -90°, the mining transport vehicle can turn around on the spot. When the front and rear wheels turn to +90° or -90° at the same time, the mining transport vehicle can move horizontally to the right or left, which facilitates the steering and U-turn of the mining transport vehicle when operating in a narrow mine tunnel, and improves the passability of the mining transport vehicle.

[0015] 2. The four wheels of the mining transport vehicle are independently driven by the hydraulic motors, and the hydraulic motors are connected to the shunt motors in parallel. When the wheels are stuck in hard coal or stuck in soft coal mud, the shunt motors are controlled by the control unit to provide a higher output speed to the hydraulic motors of the trapped wheels, making it easier for the trapped wheels to get out of trouble, thereby improving the mining transport vehicle's ability to get out of trouble.

[0016] 3. When the mining transport vehicle is traveling on a bumpy road, the spring in the shock absorber can not only play a shock-absorbing role, but also reduce the height difference between the front and rear of the cargo box when the front and rear wheels are at different heights, thereby preventing the cargo in the cargo box from being dumped out. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A side view of an embodiment of the present invention; Figure 2 It is a schematic diagram of the assembly of a wheel, a wheel carrier, a worm gear motor and a hydraulic motor in an embodiment of the present invention; Figure 3 It is a schematic diagram of the assembly of the shock absorber and the support bracket in the embodiment of the present invention; Figure 4 Schematic diagram of the three-dimensional structure of the bolster beam in the embodiment of the present invention; Figure 5 Schematic diagram of the three-dimensional structure of the hinge seat in an embodiment of the present invention; Figure 6 is a schematic diagram of the three-dimensional structure of a connecting piece in an embodiment of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the spring seat in an embodiment of the present invention; Figure 8 It is a schematic diagram of a mining transport vehicle turning around in situ in an embodiment of the present invention; Fig. 9 Schematic diagram of lateral movement of a mining transport vehicle in an embodiment of the present invention; Fig.10 is a system principle diagram of an embodiment of the present invention; Reference numerals: 1. Frame; 2. Cargo box; 21. Connecting piece; 211. Stop block; 3. Wheel; 31. Wheel frame; 311. Side baffle; 312. Loading plate; 32. Worm gear motor; 321. Connecting plate; 33. Hydraulic motor; 4. Electric hydraulic pump; 41. Split motor; 5. Power supply unit; 6. Control unit; 7. shock absorber; 71. spring; 72. spring seat; 721. limit column; 8. Protective plate; 9. Support frame; 91. Vertical beam; 92. Horizontal beam; 93. Bolster beam; 931. Hinge seat; 932. Limiting groove. DETAILED DESCRIPTION

[0018] In order to better understand the purpose, structure and function of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0019] See also Figures 1 to 10 The present embodiment discloses a hydraulic four-wheel drive mining transport vehicle, comprising a frame 1, wherein the top of the frame 1 is provided with a cargo box 2 for loading goods, and the bottom is provided with wheels 3, an electric hydraulic pump 4, a power supply unit 5 and a control unit 6, wherein the power supply unit 5 supplies power to the electric hydraulic pump 4 and the worm gear motor 32, and the control unit 6 is used to control the operation of the electric hydraulic pump 4, the shunt motor 41 and the worm gear motor 32. In the present embodiment, the mining transport vehicle may also be provided with an oil tank cooler and a heat dissipation water tank for heat dissipation of the electric hydraulic pump 4, the shunt motor 41, the hydraulic motor 33 and the worm gear motor 32; the wheel 3 bearing is connected to a wheel frame 31, a worm gear motor 32 is provided between the wheel frame 31 and the frame 1, and the worm shaft of the worm gear motor 32 is fixed to the upper surface of the wheel frame 31 The upper surface of the worm gear motor 32 is fixedly connected to the lower surface of the frame 1; the electric hydraulic pump 4 is connected to a shunt motor 41, and the shunt motor 41 is respectively connected to the hydraulic motor 33. The shunt motor 41 serves as a flow distribution device and can distribute the output flow of the hydraulic motor 33 according to the instructions of the control unit 6. The hydraulic motor 33 is fixedly mounted on the wheel frame 31, and the hydraulic motor 33 drives the wheel 3 to rotate; the frame 1 is equipped with a shock absorber 7, the top of the shock absorber 7 is fixedly connected to the bottom of the cargo box 2, and the bottom of the shock absorber 7 is fixedly connected to the frame 1. The shock absorber 7 can absorb the impact caused by the road surface, reduce the bounce and vibration of the cargo box 2, and avoid the goods loaded in the cargo box 2 from being bumped out, so that the cargo box 2 is more stable during driving.

[0020] The wheel frame 31 includes side baffles 311 located on both sides of the wheel 3 and a bearing plate 312 located on the top of the wheel 3. The bearing plates 312 are fixedly connected to the two side baffles 311 respectively. The two side baffles 311 are respectively connected to the bearings of the wheel 3. The side baffles 311 can also protect the wheel 3 and prevent the wheel 3 from being scratched by the hard coal rock on the wall of the mine during driving.

[0021] The worm shaft of the worm gear motor 32 is fixedly connected to the upper surface of the supporting plate 312. A connecting plate 321 is provided on the top of the worm gear motor 32. The connecting plate 321 is connected to the lower surface of the frame 1 through fasteners. A threaded hole is provided on the connecting plate 321, and it is connected to the frame 1 through fastening screws. Once the wheel 3 or the worm gear motor 32 needs to be replaced or repaired, it is more convenient to disassemble.

[0022] The frame 1 has four wheel positions at the bottom, and the wheels 3 are arranged in the wheel positions. The hydraulic motor 33 is fixedly mounted on the side baffle 311 located on the outside of the wheel 3. The hydraulic motor 33 is connected to the shunt motor 41 in parallel. Each hydraulic motor 33 can directly obtain the required flow from the shunt motor 41, reducing the loss in the energy conversion process, thereby improving the overall system efficiency. The parallel connection method allows the shunt motor 41 to individually control the output speed of each hydraulic motor 33, which can effectively help the trapped wheels 3 to escape.

[0023] The shock absorber 7 includes a spring 71, and the top and bottom of the spring 71 are respectively fixedly connected with a spring seat 72, and the spring seat 72 is provided with a limiting column 721. The spring 71 is sleeved on the limiting column 721. When the ends of the two limiting columns 721 sleeved on the top and bottom of the spring 71 are in contact, the bottom of the cargo box 2 will not touch the frame 1, which can prevent the cargo box 2 from colliding with the frame 1 when falling down during the bumpy process, causing damage to the cargo box 2 and the frame 1.

[0024] The front and rear parts of the frame 1 are respectively provided with protective plates 8, and the control unit 6 is arranged on the inner side of the protective plates 8. The protective plates 8 can prevent the hard coal rocks on the road from scratching the frame 1, and can also prevent the coal rocks splashed on the road from hitting the control unit 6 and other sensitive devices and causing damage. Two supporting frames 9 are laterally arranged on the inner side of the protective plate 8, and the supporting frames 9 include two vertical beams 91 and a cross beam 92. The tops of the two vertical beams 91 are fixedly connected to the bottom of the frame 1, the bottoms of the two vertical beams 91 are fixedly connected to the upper surface of the cross beam 92, and the front end of the cross beam 92 is fixedly connected to the inner facade of the protective plate 8. A slide groove is formed between the two vertical beams 91, and a rocker beam 93 is slidably matched with the two relative slide grooves in the horizontal direction. The bottom surface of the rocker beam 93 is connected to the spring seat 72 located at the top of the spring 71 by fastening screws, and the top surface of the rocker beam 93 is fixedly connected to the cargo box 2.

[0025] The side surface of the bolster beam 93 is provided with a limiting groove 932 adapted to the vertical beam 91. The sliding cooperation between the vertical beam 91 and the limiting groove 932 enables the bolster beam 93 to move up and down only in the slide groove, and the movement is more stable and smooth.

[0026] A hinge seat 931 is laterally arranged on the top of the rocking beam 93, and the hinge seat 931 is provided with an axial hole. The axial holes of the two hinge seats 931 are perpendicular to each other. A connecting piece 21 matching the hinge seat 931 is fixedly arranged at the bottom of the cargo box 2. The connecting piece 21 is provided with an axial hole, and the axial hole is provided with a pin. The hinge seat 931 is pin-connected to the connecting piece 21. The pin connection facilitates the disassembly and installation between the cargo box 2 and the rocking beam 93, and the axial holes of the two hinge seats 931 are perpendicular to each other, which can realize the front, back, left, and right limiting of the cargo box 2 and prevent the cargo box 2 from shaking back, forth, left, and right on the rocking beam 93.

[0027] The top surface of the hinge seat 931 is an arc surface, and a blocking block 211 is provided above the axial hole of the connecting member 21. The bottom surface of the blocking block 211 fits with the top surface of the hinge seat 931. When the bumps are severe, the blocking block 211 is cushioned on the arc surface of the hinge seat 931 during the falling process of the cargo box 2, which can relieve the pressure of the axial hole on the pin shaft, prevent the pin shaft from being bent, and is not easy to disassemble.

[0028] There is a height difference between the two ends of the cross beam 92, wherein the end connected to the protective plate 8 is higher than the end connected to the vertical beam 91, so that the cross beam 92 has an upward inclination angle, which can improve the passability of the mining transport vehicle.

[0029] Working principle: The four wheels 3 of the mining transport vehicle are independently driven by the hydraulic motor 33, and the wheels do not need to be connected by axles and drive bridges. Therefore, when the mining transport vehicle is driving, the wheels 3 can be turned within the range of ±90° under the drive of the worm gear motor 32. When the front wheel 3 turns to +90° and the rear wheel 3 turns to -90°, the mining transport vehicle can turn around on the spot. When the front and rear wheels 3 turn to +90° or -90° at the same time, the mining transport vehicle can move horizontally to the right or left, which facilitates the mining transport vehicle to turn and turn around when operating in narrow mine tunnels, and improves the passability of the mining transport vehicle; The four wheels 3 are independently driven by the corresponding hydraulic motors 33, and the hydraulic motors 33 are connected to the shunt motors 41 in parallel. When the wheels 3 are stuck by hard coal rocks or stuck in soft coal mud, the shunt motors 41 are controlled by the control unit 6 to provide a larger output speed to the hydraulic motors 33 of the trapped wheels 3, making it easier for the trapped wheels 3 to escape, thereby improving the escape ability of the mining transport vehicle. When the mining transport vehicle is traveling on a bumpy road, the springs 71 in the shock absorbers 7 can not only play a shock-absorbing role, but also reduce the height difference between the front and rear of the cargo box 2 when the front and rear wheels 3 are at different heights, thereby preventing the goods in the cargo box 2 from being dumped out.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydraulic four-wheel drive mining transport vehicle, characterized in that: The vehicle comprises a frame (1), wherein the top of the frame (1) is provided with a cargo box (2), and the bottom of the frame (1) is provided with wheels (3), an electric hydraulic pump (4), a power supply unit (5), and a control unit (6); The wheel (3) bearing is connected to a wheel frame (31), a worm gear motor (32) is provided between the wheel frame (31) and the vehicle frame (1), a turbine shaft of the worm gear motor (32) is fixedly connected to an upper surface of the wheel frame (31), and an upper surface of the worm gear motor (32) is fixedly connected to a lower surface of the vehicle frame (1); The electric hydraulic pump (4) is connected to a shunt motor (41), the shunt motor (41) is respectively connected to a hydraulic motor (33), the hydraulic motor (33) is fixedly mounted on the wheel frame (31), and the hydraulic motor (33) drives the wheel (3) to rotate; The vehicle frame (1) is provided with a shock absorber (7), the top of the shock absorber (7) is fixedly connected to the bottom of the cargo box (2), and the bottom of the shock absorber (7) is fixedly connected to the vehicle frame (1).

2. The hydraulic four-wheel drive mining transport vehicle according to claim 1, characterized in that: The wheel frame (31) comprises side baffles (311) located on both sides of the wheel (3) and a bearing plate (312) located on the top of the wheel (3); the bearing plate (312) is respectively fixedly connected to the two side baffles (311); and the two side baffles (311) are respectively connected to the bearings of the wheel (3).

3. The hydraulic four-wheel drive mining transport vehicle according to claim 2, characterized in that: The worm shaft of the worm gear motor (32) is fixedly connected to the upper surface of the bearing plate (312), a connecting plate (321) is provided on the top of the worm gear motor (32), and the connecting plate (321) is connected to the lower surface of the vehicle frame (1) via fasteners.

4. The hydraulic four-wheel drive mining transport vehicle according to claim 2, characterized in that: The frame (1) is provided with four wheel positions at the bottom, the wheels (3) are arranged in the wheel positions, the hydraulic motor (33) is fixedly mounted on a side baffle (311) located outside the wheels (3), and the hydraulic motor (33) is connected to the shunt motor (41) in parallel.

5. The hydraulic four-wheel drive mining transport vehicle according to claim 1, characterized in that: The shock absorber (7) comprises a spring (71), the top and bottom of the spring (71) are respectively fixedly connected to spring seats (72), the spring seat (72) is provided with a limiting column (721), and the spring (71) is sleeved on the limiting column (721).

6. The hydraulic four-wheel drive mining transport vehicle according to claim 5, characterized in that: The front and rear parts of the frame (1) are respectively provided with protective plates (8), and two supporting frames (9) are arranged on the inner side of the protective plates (8) in a transverse direction and opposite to each other, and the supporting frames (9) include two vertical beams (91) and a cross beam (92), the tops of the two vertical beams (91) are fixedly connected to the bottom of the frame (1), the bottoms of the two vertical beams (91) are fixedly connected to the upper surface of the cross beam (92), the front end of the cross beam (92) is fixedly connected to the inner vertical surface of the protective plate (8), a slide groove is formed between the two vertical beams (91), and a bolster beam (93) is slidably matched with the two opposite slide grooves in the transverse direction, the bottom surface of the bolster beam (93) is connected to the spring seat (72) located at the top of the spring (71) by fastening screws, and the top surface of the bolster beam (93) is fixedly connected to the cargo box (2).

7. The hydraulic four-wheel drive mining transport vehicle according to claim 6, characterized in that: The side elevation of the bolster beam (93) is provided with a limiting groove (932) adapted to the vertical beam (91).

8. The hydraulic four-wheel drive mining transport vehicle according to claim 7, characterized in that: The top of the bolster beam (93) is laterally oppositely provided with a hinge seat (931), the hinge seat (931) is provided with an axial hole, and the axial holes of the two hinge seats (931) are perpendicular to each other. The bottom of the cargo box (2) is fixedly provided with a connecting piece (21) matched with the hinge seat (931), the connecting piece (21) is provided with an axial hole, and the axial hole is provided with a pin shaft, and the hinge seat (931) is pin-connected to the connecting piece (21).

9. The hydraulic four-wheel drive mining transport vehicle according to claim 8, characterized in that: The top surface of the hinge seat (931) is an arc surface, and a blocking block (211) is provided above the shaft hole of the connecting member (21), and the bottom surface of the blocking block (211) is in contact with the top surface of the hinge seat (931).

10. The hydraulic four-wheel drive mining transport vehicle according to claim 6, characterized in that: There is a height difference between the two ends of the cross beam (92), wherein the end connected to the protective plate (8) is higher than the end connected to the vertical beam (91).

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