Power-assisted steering oil cylinder assembly

Abstract

The utility model relates to the technical field of automobiles, and discloses a power-assisted steering oil cylinder assembly which comprises a torsion bar and a plurality of water pipes, the outer wall of the torsion bar is fixedly connected with a valve sleeve, the bottom of the outer wall of the valve sleeve is fixedly connected with a cylinder barrel, and the inner wall of the cylinder barrel is fixedly connected with a steering rack. The left end of the front side of the steering rack is rotationally connected with a steering gear, the left side of the steering rack is fixedly connected with a rotating rod, the middle of the outer wall of the rotating rod is fixedly connected with a piston, the left end and the right end of the outer wall of the piston are each fixedly connected with two dustproof pipes, and the middle of the outer wall of the piston is fixedly connected with a plurality of first sealing rings. According to the steering device, when the rotating rod drives the piston to move, the sealing ring can be broken after long-time movement, the inner wall of the cylinder barrel can be scratched and abraded, the operation performance of engineering machinery is affected, the dustproof pipe prevents the broken sealing ring from flowing into the cylinder barrel, and steering stability and reliability are maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a steering power cylinder assembly. Background Art

[0002] The steering cylinder power assist assembly mainly provides steering assistance for construction machinery. It can greatly reduce the force required by the operator when controlling the steering of the machinery, improve the convenience and accuracy of operation. Through the hydraulic principle, it converts the power of the engine into steering assistance, allowing the machinery to flexibly perform steering operations in various complex terrains and working conditions.

[0003] The steering cylinder assist assembly is an important component used for vehicle steering. By precisely controlling the flow and pressure of the hydraulic oil, the steering cylinder assist assembly can make the vehicle's steering more accurate and stable, improving driving safety. It can automatically adjust the amount of steering assist according to the vehicle's speed and road conditions to meet steering requirements under different driving conditions.

[0004] When the piston reciprocates in the cylinder, it is in constant contact and friction with the inner wall of the cylinder. During the friction with the piston, the sealing ring will harden over time, causing the sealing ring to harden and produce debris. The debris will flow into the hydraulic oil with the movement of the piston, blocking the water inlet and affecting the working efficiency and stability of the cylinder. Utility Model Content

[0005] In order to remedy the above deficiencies, the present invention provides a steering power cylinder assembly, which aims to improve the problem of debris generated by broken sealing rings entering the hydraulic oil.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a steering power cylinder assembly, including a torsion bar and multiple water pipes, the outer wall of the torsion bar is fixedly connected to a valve sleeve, the bottom of the outer wall of the valve sleeve is fixedly connected to a cylinder, the inner wall of the cylinder is fixedly connected to a steering rack, the front left end of the steering rack is rotatably connected to the steering gear, the left side of the steering rack is fixedly connected to a rotating rod, the middle part of the outer wall of the rotating rod is fixedly connected to a piston, the left and right ends of the outer wall of the piston are fixedly connected to two dustproof pipes, the middle part of the outer wall of the piston is fixedly connected to multiple sealing rings 1, the two dustproof pipes are used to prevent particles formed by the breakage of the sealing ring 1 from flowing into the cylinder, the left and right ends of the outer wall of the rotating rod are fixedly connected to multiple sealing rings 2, and the outer wall of the torsion bar is provided with a control mechanism, which is used to control the function of oil in and out of the valve sleeve.

[0007] As a further description of the above technical solution:

[0008] The upper end of the outer wall of the torsion bar is fixedly connected to a top plate, the middle upper part of the torsion bar is fixedly connected to a baffle 1, the middle part of the torsion bar is fixedly connected to a partition, the middle part of the torsion bar is fixedly connected to two baffle 2s, the middle lower part of the torsion bar is fixedly connected to two baffle 3s, and the lower end of the torsion bar is fixedly connected to a bottom plate.

[0009] As a further description of the above technical solution:

[0010] Dust rings are fixedly connected to the left and right ends of the rotating rod, and the dust rings are used to prevent dust and particles from entering the cylinder.

[0011] As a further description of the above technical solution:

[0012] The top end of the outer wall of the cylinder is fixedly connected with a cylinder head, and the upper end of the cylinder head is fixedly connected with glass.

[0013] As a further description of the above technical solution:

[0014] The left end of the outer wall of the cylinder is fixedly connected with a support frame, and the support frame is used to support the water pipe.

[0015] As a further description of the above technical solution:

[0016] An oil tank is provided on the rear side of the valve sleeve, and a support plate is fixedly connected to the rear side of the oil tank.

[0017] As a further description of the above technical solution:

[0018] A hydraulic pump is provided on the left side of the valve sleeve, and a heat dissipation fin is fixedly connected to the outer wall of the hydraulic pump.

[0019] As a further description of the above technical solution:

[0020] An interface is fixedly connected to the top end of the outer wall of the cylinder, and the interface is used to ensure the sealing of the water pipe.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the present invention, when the rotating rod drives the piston to move, the sealing ring on the piston will harden due to the long-term movement of the piston, which will cause the sealing ring to break, causing scratches and wear on the inner wall of the cylinder, reducing the service life of the cylinder, resulting in uneven steering or even jamming, affecting the operating performance of the engineering machinery. The dustproof tube prevents the broken sealing ring from flowing into the cylinder, thereby maintaining the sealing performance of the cylinder and improving the stability and reliability of the steering.

[0023] 2. In the present invention, as the use time increases, the torsion bar and valve sleeve of the rotary valve will continue to rub and easily wear out. The wear will cause the fitting clearance to increase and the hydraulic oil leakage to increase, thereby reducing the steering efficiency and stability, reducing the friction area and wear parts of the torsion bar and valve sleeve, and reducing the use cost and maintenance difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional diagram of a steering power cylinder assembly proposed by the present utility model;

[0025] Figure 2 This is a schematic structural diagram of a dust ring of a power steering cylinder assembly proposed by the present invention;

[0026] Figure 3 This is a structural schematic diagram of a baffle 1 of a power steering cylinder assembly proposed by the present invention;

[0027] Figure 4 This is a structural schematic diagram of a steering gear of a steering power cylinder assembly proposed by the present invention;

[0028] Figure 5 This is a cross-sectional view of a rotating rod of a steering power cylinder assembly proposed by the utility model.

[0029] Legend:

[0030] 1. Torsion bar; 2. Control mechanism; 201. Top plate; 202. Baffle 1; 203. Partition; 204. Baffle 2; 205. Baffle 3; 206. Bottom plate; 3. Valve sleeve; 4. Cylinder barrel; 5. Steering rack; 6. Steering gear; 7. Rotating rod; 8. Piston; 9. Dustproof tube; 10. Sealing ring 1; 11. Sealing ring 2; 12. Dustproof ring; 13. Cylinder head; 14. Glass; 15. Support frame; 16. Fuel tank; 17. Support plate; 18. Hydraulic pump; 19. Heat sink fins; 20. Interface; 21. Water pipe. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figure 1 and Figure 4The utility model provides an embodiment of a steering power cylinder assembly, including a torsion bar 1 and multiple water pipes 21. The outer wall of the torsion bar 1 is fixedly connected to a valve sleeve 3, the outer wall bottom of the valve sleeve 3 is fixedly connected to a cylinder barrel 4, the inner wall of the cylinder barrel 4 is fixedly connected to a steering rack 5, the front left end of the steering rack 5 is rotatably connected to a steering gear 6, the left side of the steering rack 5 is fixedly connected to a rotating rod 7, the middle part of the outer wall of the rotating rod 7 is fixedly connected to a piston 8, the left and right ends of the outer wall of the piston 8 are fixedly connected to two dustproof pipes 9, the middle part of the outer wall of the piston 8 is fixedly connected to multiple sealing rings 10, the two dustproof pipes 9 are used to prevent the particles formed by the broken sealing ring 10 from flowing into the cylinder barrel 4, the left and right ends of the outer wall of the rotating rod 7 are fixedly connected to multiple sealing rings 11, and the outer wall of the torsion bar 1 is provided with a control mechanism 2, which is used to control the function of oil in and out of the valve sleeve 3;

[0033] Specifically, it includes a torsion bar 1 and multiple water pipes 21. The outer wall of the torsion bar 1 is fixedly connected to a valve sleeve 3, the bottom of the outer wall of the valve sleeve 3 is fixedly connected to a cylinder 4, the inner wall of the cylinder 4 is fixedly connected to a steering rack 5, the front left end of the steering rack 5 is rotatably connected to a steering gear 6, the left side of the steering rack 5 is fixedly connected to a rotating rod 7, and the steering gear 6 is driven by rotating the torsion bar 1 to move the rotating rod 7 left and right through the steering rack 5. The middle part of the outer wall of the rotating rod 7 is fixedly connected to a piston 8, and the left and right ends of the outer wall of the piston 8 are fixedly connected to two dustproof tubes 9, and the middle part of the outer wall of the piston 8 is fixedly connected to multiple sealing rings 10. The two dustproof tubes 9 are used to prevent the particles formed by the breakage of the sealing ring 10 from flowing into the cylinder 4, and the left and right ends of the outer wall of the rotating rod 7 are fixedly connected to multiple sealing rings 2 11.

[0034] Reference Figure 3 and Figure 4 The upper end of the outer wall of the torsion bar 1 is fixedly connected to a top plate 201, the middle and upper part of the torsion bar 1 is fixedly connected to two baffles 1 202, the middle part of the torsion bar 1 is fixedly connected to a partition 203, the middle part of the torsion bar 1 is fixedly connected to a baffle 204, the middle and lower part of the torsion bar 1 is fixedly connected to two baffles 3 205, and the lower end of the torsion bar 1 is fixedly connected to a bottom plate 206;

[0035] Specifically, the upper end of the outer wall of the torsion bar 1 is fixedly connected to a top plate 201, the middle and upper part of the torsion bar 1 is fixedly connected to two baffles 1 202, the middle part of the torsion bar 1 is fixedly connected to a partition 203, the middle part of the torsion bar 1 is fixedly connected to a baffle 204, the middle and lower part of the torsion bar 1 is fixedly connected to two baffles 3 205, and the lower end of the torsion bar 1 is fixedly connected to a bottom plate 206. When the torsion bar 1 is rotated to the right, the baffle 1 202 will be removed, and the hydraulic oil can enter the valve sleeve 3 through the water inlet. When the torsion bar 1 is rotated to the left, the baffle 1 202 will block the water outlet, the baffle 2 204 will be removed, and the hydraulic oil will flow into the bottom through the partition.

[0036] Reference Figure 2 and Figure 5 , the left and right ends of the rotating rod 7 are fixedly connected with dust rings 12, the dust ring 12 is used to prevent dust and particles from entering the cylinder 4, the top of the outer wall of the cylinder 4 is fixedly connected with a cylinder head 13, the upper end of the cylinder head 13 is fixedly connected with a glass 14, the left end of the outer wall of the cylinder 4 is fixedly connected with a support frame 15, the support frame 15 is used to support the water pipe 21;

[0037] Specifically, the left and right ends of the rotating rod 7 are fixedly connected with dust rings 12, which are used to prevent dust and particulate matter from entering the cylinder 4. The top of the outer wall of the cylinder 4 is fixedly connected with a cylinder head 13, and the upper end of the cylinder head 13 is fixedly connected with a glass 14, which can be used to fix the position of the cylinder. The left end of the outer wall of the cylinder 4 is fixedly connected with a support frame 15, which is used to support the water pipe 21.

[0038] Reference Figure 1 and Figure 5 , an oil tank 16 is provided on the rear side of the valve sleeve 3, a support plate 17 is fixedly connected to the rear side of the oil tank 16, a hydraulic pump 18 is provided on the left side of the valve sleeve 3, a heat dissipation fin 19 is fixedly connected to the outer wall of the hydraulic pump 18, and an interface 20 is fixedly connected to the top of the outer wall of the cylinder 4, and the interface 20 is used to ensure the sealing of the water pipe 21;

[0039] Specifically, an oil tank 16 is provided on the rear side of the valve sleeve 3, and a support plate 17 is fixedly connected to the rear side of the oil tank 16. A hydraulic pump 18 is provided on the left side of the valve sleeve 3, and a heat dissipation fin 19 is fixedly connected to the outer wall of the hydraulic pump 18. The top of the outer wall of the cylinder 4 is fixedly connected to an interface 20, and the interface 20 is used to ensure the sealing of the water pipe 21.

[0040] Working principle: When the torsion bar 1 is rotated, the torsion bar 1 drives the valve sleeve 3 to move. Since the bottom of the valve sleeve 3 is connected to the cylinder 4, the steering rack 5 and the steering gear 6 in the cylinder 4 cooperate with each other. When the rotation of the torsion bar 1 is transmitted to the cylinder 4 through the valve sleeve 3, the steering rack 5 moves under the action of the force, thereby driving the steering gear 6 to rotate, and the rotating rod 7 on the left side of the steering rack 5 also moves accordingly. The piston 8 in the middle of the outer wall of the rotating rod 7 slides in the cylinder 4. The sealing ring 10 on the outer wall of the piston 8 and the sealing ring 2 11 on the left and right ends of the outer wall of the rotating rod 7 ensure that the hydraulic oil will not leak. At the same time, the dustproof pipes 9 on the left and right ends of the outer wall of the piston prevent the particles formed by the breakage of the sealing ring 10 from flowing into the cylinder 4, thereby ensuring the normal operation of the cylinder 4. The rotation of the steering gear 6 and the left and right movement of the rotating rod 7 are realized through the rotation of the torsion bar 1.

[0041] In addition, the upper end of the outer wall of the torsion bar 1 is fixedly connected to a top plate 201, the middle and upper part of the torsion bar 1 is fixedly connected to two baffles 1 202, the middle part of the torsion bar 1 is fixedly connected to a partition 203, the middle part of the torsion bar 1 is fixedly connected to a baffle 2 204, the middle and lower part of the torsion bar 1 is fixedly connected to two baffles 3 205, and the lower end of the torsion bar 1 is fixedly connected to a bottom plate 206. When the torsion bar 1 is rotated to the right, the baffle 1 202 will be removed, and the hydraulic oil can enter the valve sleeve 3 through the water inlet. When the torsion bar 1 is rotated to the left, the baffle 1 202 will block the water outlet, the baffle 2 204 will be removed, and the hydraulic oil will flow into the bottom through the partition 203.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A power steering cylinder assembly, comprising a torsion bar (1) and a plurality of water pipes (21), characterized in that: The outer wall of the torsion bar (1) is fixedly connected to a valve sleeve (3), the bottom of the outer wall of the valve sleeve (3) is fixedly connected to a cylinder (4), the inner wall of the cylinder (4) is fixedly connected to a steering rack (5), the front left end of the steering rack (5) is rotatably connected to a steering gear (6), the left side of the steering rack (5) is fixedly connected to a rotating rod (7), the middle part of the outer wall of the rotating rod (7) is fixedly connected to a piston (8), the left and right ends of the outer wall of the piston (8) are fixedly connected to two dustproof tubes (9), the middle part of the outer wall of the piston (8) is fixedly connected to a plurality of sealing rings (10), the two dustproof tubes (9) are used to prevent particles formed by the broken sealing ring (10) from flowing into the cylinder (4), the left and right ends of the outer wall of the rotating rod (7) are fixedly connected to a plurality of sealing rings (11), and the outer wall of the torsion bar (1) is provided with a control mechanism (2), the control mechanism (2) is used to control the function of oil entering and exiting the valve sleeve (3).

2. The power steering cylinder assembly according to claim 1, characterized in that: The upper end of the outer wall of the torsion bar (1) is fixedly connected to a top plate (201), the middle and upper part of the torsion bar (1) is fixedly connected to two baffles (202), the middle part of the torsion bar (1) is fixedly connected to a partition (203), the middle part of the torsion bar (1) is fixedly connected to a baffle (204), the middle part of the torsion bar (1) is fixedly connected to two baffles (205), and the lower end of the torsion bar (1) is fixedly connected to a bottom plate (206).

3. The power steering cylinder assembly according to claim 1, characterized in that: Dustproof rings (12) are fixedly connected to both left and right ends of the rotating rod (7), and the dustproof rings (12) are used to prevent dust and particles from entering the cylinder (4).

4. The power steering cylinder assembly according to claim 3, characterized in that: The top end of the outer wall of the cylinder (4) is fixedly connected to a cylinder head (13), and the upper end of the cylinder head (13) is fixedly connected to a glass (14).

5. The power steering cylinder assembly according to claim 3, characterized in that: A support frame (15) is fixedly connected to the left end of the outer wall of the cylinder (4), and the support frame (15) is used to support the water pipe (21).

6. The power steering cylinder assembly according to claim 1, characterized in that: An oil tank (16) is provided on the rear side of the valve sleeve (3), and a support plate (17) is fixedly connected to the rear side of the oil tank (16).

7. The power steering cylinder assembly according to claim 1, characterized in that: A hydraulic pump (18) is provided on the left side of the valve sleeve (3), and a heat dissipation fin (19) is fixedly connected to the outer wall of the hydraulic pump (18).

8. The power steering cylinder assembly according to claim 1, characterized in that: The top end of the outer wall of the cylinder (4) is fixedly connected with an interface (20), and the interface (20) is used to ensure the sealing of the water pipe (21).

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