Steering device of underground mining equipment
By adopting the design of double-rod, double-acting oil cylinder and hydraulic control system in underground mining equipment, the problem of waste of space and limited use scenarios caused by articulated steering is solved, and more flexible steering and lower turning radius are achieved, which improves the Equipment adaptability and safety.
Patent Information
- Application Number
- CN202421171407.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The existing articulated steering method has led to waste of space and limited use scenarios of underground mining equipment, limiting the application and transition flexibility of equipment in wells and lanes.
Using a double-rod double-acting oil cylinder and hydraulic control system, by installing a double-rod double-acting oil cylinder on the front axle and rear axle, the wheel installation structure is articulated with the chassis, and the hydraulic pipelines and control components are used to achieve synchronous steering of the wheels, reducing the vehicle chassis. Space occupation.
Without occupying the chassis space, the steering flexibility and adaptability of the equipment are greatly improved, the turning radius is reduced, and the equipment's adaptability and safety and reliability are improved in special scenarios.
Smart Images
Figure CN222272173U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steering devices, in particular to a steering device for underground mining equipment. Background Art
[0002] Underground mining equipment is limited by the size of the shaft and tunnel, and has high requirements on the equipment's overall size and turning radius. Therefore, most equipment uses articulated steering to reduce the turning radius (such as Figure 3 As shown), while articulated steering wastes equipment space (as shown Figure 4 As a result, the length of the equipment has to be extended, which further limits the application of the equipment in shafts and tunnels, and restricts its movement and transfer, resulting in low equipment efficiency. Utility Model Content
[0003] The technical problem to be solved by the utility model is that the existing articulated steering method causes waste of equipment space and greatly limits the use scenarios.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a steering device for underground mining equipment, comprising a double-rod double-acting cylinder with a fixed piston end length arranged at both ends of a vehicle chassis, a wheel mounting structure vertically rotatably hinged to the chassis, a movable end of the double-rod double-acting cylinder hinged to the wheel mounting structure, and a control component is arranged on the vehicle chassis, and the control component is connected to the double-rod double-acting cylinder through a hydraulic pipeline control.
[0005] Preferably, a front axle and a rear axle are respectively provided at both ends of the vehicle chassis, the double-rod double-acting cylinder is installed on the front axle and the rear axle, and the front axle and the rear axle are arranged parallel to the double-rod double-acting cylinder, and the ends of the front axle and the rear axle are hinged with the wheel mounting structure.
[0006] Preferably, the control component includes a steering gear, which is provided with dual front oil outlets and dual rear oil outlets, and the dual front oil outlets and dual rear oil outlets are both provided with left-turn oil circuits and right-turn oil circuits. The left-turn oil circuit is connected in series with a front and rear steering selection valve and a four-wheel steering selection valve, and the right-turn oil circuit is connected in series with a front and rear steering selection valve.
[0007] Preferably, adjustable safety relief valves are arranged on the pipelines of the dual front oil outlets and the dual rear oil outlets.
[0008] Preferably, the oil outlet pressure of the adjustable safety relief valve of the double front oil outlet is 160 bar.
[0009] The utility model provides a steering device for underground mining equipment. By installing double-rod double-acting oil cylinders on the front axle and the rear axle, the wheel mounting structure is hinged with the double-rod double-acting oil cylinder and the chassis. The wheel mounting structure of the front axle or the rear axle is pushed to turn synchronously by extending the piston at one end of the double-rod double-acting oil cylinder and contracting the piston at the other end synchronously, so that the mining vehicle can turn significantly without occupying the space of the vehicle chassis. The special limitations of underground mines on equipment steering are solved. Due to the simple structure, simple control, safety and reliability, and mature technology of the utility model, the steering flexibility of the equipment, adaptability to special scenes, and the reduction of the turning radius can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0011] Figure 1 It is a structural schematic diagram of the equipment chassis of an embodiment of the utility model.
[0012] Figure 2 This is a schematic diagram of the hydraulic control principle of an embodiment of the utility model.
[0013] Figure 3 This is a top view of an existing articulated underground mining equipment when turning.
[0014] Figure 4 It is a top view of the existing articulated ground wire mining equipment.
[0015] In the figure: 1. front axle; 2. front axle steering cylinder; 3. front axle left pin; 4. front axle right pin; 5. rear axle; 6. rear steering cylinder; 7. rear steering left pin; 8. rear steering right pin; 9. front wheel; 10. rear wheel; 11. front steering left pin; 12. front steering right pin; 13. rear steering left pin; 14. rear steering right pin; 15. front left connecting piece; 16. front right connecting piece; 17. rear left connecting piece; 18. rear right connecting piece; 19. front and rear steering selection valve; 20. four-wheel steering selection valve; 21. steering gear; 22. adjustable safety relief valve. DETAILED DESCRIPTION
[0016] like Figure 1-2 The utility model provides a steering device for underground mining equipment, comprising a front axle 1 and a rear axle 5 respectively arranged at two ends of a chassis, a double-rod double-acting oil cylinder is arranged on the front axle 1 and the rear axle 5, a wheel mounting structure is vertically rotated and hinged on the chassis, an output end of the double-rod double-acting oil cylinder is vertically rotated and connected to the wheel mounting structure, a control component is arranged on the chassis, and the control component is connected to the double-rod double-acting oil cylinder through a hydraulic pipeline control.
[0017] A front axle steering cylinder 2 is installed on the front axle 1, wherein pressure oil enters F1 or F2 of the front axle steering cylinder 2, and the front axle steering cylinder 2 performs reciprocating motion parallel to the A-A' line, and the acting force passes through the front steering left pin shaft 11 and the front steering right pin shaft 12 to the front left connecting member 15 and the front right connecting member 16, and the front left connecting member 15 and the front right connecting member 16 respectively perform relative circular motion around the front axle left pin shaft 3 and the front axle right pin shaft 4, and the directions of the two front wheels 9 change synchronously; similarly, the directions of the two rear wheels 10 change synchronously.
[0018] like Figure 2 The control assembly includes a steering gear 21, which is provided with double front oil outlets and double rear oil outlets, and both the double front oil outlets and the double rear oil outlets are provided with left-turn oil circuits and right-turn oil circuits, and the left-turn oil circuit is connected in series with a front and rear steering selection valve 19 and a four-wheel steering selection valve 20, and the right-turn oil circuit is connected in series with a front and rear steering selection valve 19.
[0019] like Figure 2 Adjustable safety relief valves 22 are arranged on the pipelines of the dual front oil outlets and the dual rear oil outlets.
[0020] As a preferred embodiment of the utility model, the oil outlet pressure of the adjustable safety relief valve 22 of the double front oil outlets is 160 bar.
[0021] The set pressure of the adjustable safety relief valve 22 connected to the oil outlet pipeline of the steering gear 21 is 160bar. When subjected to irresistible external force, the steering cylinder will be actuated to protect other parts of the equipment. The set pressure of the adjustable safety relief valve 22 connecting the steering gear 21 with the equipment's own pressure oil source and the equipment's own return oil tank is 120bar, which is used to adjust the maximum pressure in the steering system.
[0022] Control module such as Figure 2 As shown, port P is the pressure oil source of the equipment itself, and port T is the oil return tank of the equipment itself. The usage is as follows:
[0023] 1. Independent front wheel steering: the front and rear steering selector valves 19 are in the left position, and the four-wheel steering selector valve 20 is in the left position: the steering gear 21 is operated, and the pressure oil flows out from the R port, passes through the P1 port to the A1 port of the front and rear steering selector valves 19, and enters the F1 port of the front axle steering cylinder 2. The piston and piston rod of the front axle steering cylinder 2 move to the left, pushing the front steering left pin 11 and the front left connecting piece 15 to make a relative arc motion around the front axle left pin 3, and at the same time pulling the front steering right pin 12 and the front right connecting piece 16 to make a relative arc motion around the front axle right pin 4, and the two front wheels 9 are synchronously deflected to the right, that is: the two front wheels 9 turn right; the F2 port of the front axle steering cylinder 2 flows back, passes through the A2 port to the P2 port of the front and rear steering selector valve 19, the T port to the P port of the four-wheel steering selector valve 20, and the L port to the T port of the steering gear 21 to return to the equipment tank. Similarly, by operating the steering gear 21, the pressure oil flowing out from the L port will complete the left steering of the two front wheels 9.
[0024] 2. Rear wheel independent steering: the front and rear steering selector valves 19 are in the left position, and the four-wheel steering selector valve 20 is in the left position: the steering gear 21 is operated, and the pressure oil flows out from the R port, passes through the P1 port to the B1 port of the front and rear steering selector valve 19, and enters the R1 port of the rear steering cylinder 6. The piston and piston rod of the rear steering cylinder 6 move to the left, pushing the rear steering left pin 13 and the rear left connecting piece 17 to make a relative arc motion around the rear steering left pin 7, and at the same time pulling the rear steering right pin 14 and the rear right connecting piece 18 of the rear axle to make a relative arc motion around the rear steering right pin 8, and the two rear wheels 10 are synchronously deflected to the left, that is: the two rear wheels 10 are turned right; the R2 port of the rear steering cylinder 6 is refluxed, passes through the B2 port to the P2 port of the front and rear steering selector valve 19, the T port to the P port of the four-wheel steering selector valve 20, and the L port to the T port of the steering gear 21 to return to the equipment tank. Similarly, when the steering gear 21 is operated and the pressure oil flows out from the L port, the two rear wheels 10 will turn left.
[0025] 3. Synchronous steering of front and rear four wheels: the front and rear steering selector valve 19 is in the right position, and the four-wheel steering selector valve 20 is in the right position: the steering gear 21 is operated, and the pressure oil flows out from the R port, enters the P1 port of the front and rear steering selector valve 19 to the A1 port and enters the F1 port of the front axle steering cylinder 2, and the piston and piston rod of the front axle steering cylinder 2 move to the left, pushing the front steering left pin 11 and the front left connecting piece 15 to make a relative arc motion around the front axle left pin 3, and at the same time pulling the front steering right pin 12 and the front right connecting piece 16 to make a relative arc motion around the front axle right pin 4, and the two front wheels 9 are synchronously deflected to the right, that is, the two front wheels 9 are turned to the right;
[0026] The F2 port of the front axle steering cylinder 2 flows back, passes through the A2 port to the P2 port of the front and rear steering selector valve 19, the T port to the A port of the four-wheel steering selector valve 20, and the P3 port to the A3 port of the front and rear steering selector valve 19, and enters the R1 port of the rear steering cylinder 6. The piston and piston rod of the rear steering cylinder 6 move to the left, pushing the rear steering left pin 13 and the rear left connecting piece 17 to make a relative circular arc movement around the rear steering left pin 7, and at the same time pulling the rear steering right pin 14 and the rear right connecting piece 18 of the rear axle to make a relative circular arc movement around the rear steering right pin 8, and the two rear wheels 10 are synchronously deflected to the left, that is, the two rear wheels 10 are turned to the right;
[0027] In summary, the two front wheels 9 are synchronously deflected to the right, and the two rear wheels 10 are synchronously deflected to the left, completing the four-wheel right turn;
[0028] Similarly, the front and rear steering selector valve 19 is in the left position and the four-wheel steering selector valve 20 is in the right position: the steering gear 21 is controlled, the pressure oil flows out from the L port, and the four wheels turn left.
Claims
1. A steering device for underground mining equipment, characterized in that: It includes a double-rod double-acting cylinder with a fixed piston end length arranged at both ends of the vehicle chassis, a wheel mounting structure is vertically hinged to the chassis, the movable end of the double-rod double-acting cylinder is hinged to the wheel mounting structure, and a control component is arranged on the vehicle chassis. The control component is connected to the double-rod double-acting cylinder through a hydraulic pipeline control.
2. An underground mining equipment steering device as claimed in claim 1, characterized in that: A front axle (1) and a rear axle (5) are respectively arranged at both ends of the vehicle chassis, the front axle (1) and the rear axle (5) are both mounted with the double-rod double-acting oil cylinder, the front axle (1) and the rear axle (5) are arranged in parallel with the double-rod double-acting oil cylinder, and the ends of the front axle (1) and the rear axle (5) are both hinged with the wheel mounting structure.
3. An underground mining equipment steering device as claimed in claim 2, characterized in that: The control component comprises a steering gear (21), the steering gear (21) being provided with dual front oil outlets and dual rear oil outlets, the dual front oil outlets and the dual rear oil outlets being provided with left-turn oil circuits and right-turn oil circuits, the left-turn oil circuit being connected in series with a front and rear steering selection valve (19) and a four-wheel steering selection valve (20), and the right-turn oil circuit being connected in series with a front and rear steering selection valve (19).
4. An underground mining equipment steering device as claimed in claim 3, characterized in that: Adjustable safety relief valves (22) are arranged on the pipelines of the dual front oil outlets and the dual rear oil outlets.
5. An underground mining equipment steering device as claimed in claim 4, characterized in that: The oil outlet pressure of the adjustable safety relief valve (22) of the double front oil outlet is 160 bar.