Axle steering structure and axle
By introducing a hydraulically controlled piston and piston rod mechanism into the axle steering structure, the stability of the self-locking state is enhanced, solving the problem of instability in the existing axle steering structure and ensuring the safety of the vehicle when driving straight.
Patent Information
- Application Number
- CN202520057055.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-01-10
AI Technical Summary
The self-locking state of the existing axle steering structure is unstable, which affects driving safety.
In the steering structure of the axle, by setting a sliding piston and piston rod in the cylinder, the hydraulic system controls the piston rod to abut against the limit block, increasing the force applied by the cylinder to the tie rod, thereby improving the stability of the self-locking state.
This improves vehicle stability when driving in a straight line, ensuring driving safety.
Smart Images
Figure CN223750943U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to vehicle steering technical field, concretely relates to a vehicle axle steering structure and vehicle axle. BACKGROUND
[0002] The vehicle axle steering structure includes two steering knuckles, a tie rod and an oil cylinder, the two steering knuckles are connected to the two axle heads of the axle respectively, the two ends of the tie rod are connected with the two steering knuckles respectively, the oil cylinder is fixed on the axle and connected with the tie rod, when the vehicle axle steering structure is in the self-locking state, the tie rod is locked through the oil cylinder, so that the vehicle can travel in a straight line. However, the self-locking state of the above-mentioned vehicle axle steering structure is unstable, which affects the driving safety. SUMMARY
[0003] In view of the defects of the prior art, the utility model discloses a vehicle axle steering structure and vehicle axle which can improve the stability of the self-locking state.
[0004] To achieve the above-mentioned purpose, the utility model embodiment adopts the following technical scheme:
[0005] The vehicle axle steering structure is installed on the axle and includes two steering knuckles, a tie rod and an oil cylinder.
[0006] The two steering knuckles are connected to the two ends of the axle respectively.
[0007] The two ends of the tie rod are connected with the two steering knuckles respectively, and the outer peripheral wall of the tie rod is fixed with two limiting blocks.
[0008] The oil cylinder is fixed on the outer peripheral wall of the axle and includes a cylinder body between the two limiting blocks, one end cover is arranged on each end of the cylinder body, each end cover is provided with a sliding hole penetrating along the axial direction of the cylinder body, a first oil port and two second oil ports are arranged on the outer peripheral wall of the cylinder body and communicated with the inner cavity of the cylinder body, the two second oil ports are located on one side of the first oil port, two pistons are slidably arranged in the inner cavity between the two end covers, a chamber is formed between each piston and the corresponding end cover, each chamber is communicated with one second oil port, each piston is provided with a plug rod on the outer end face, the outer end of each plug rod is slidably arranged in the corresponding sliding hole and extends out of the cylinder body from the sliding hole, and the outer end of one plug rod corresponds to one limiting block and can abut against each other.
[0009] Further, one second oil port is located between one end cover and one side of the first oil port and close to the end cover relative to the first oil port, and one piston is located between one first oil port and one second oil port.
[0010] Further, the first oil port and the two second oil ports are outwardly protruded relative to the outer peripheral wall of the cylinder body, and a connecting pipe is connected between the free ends of the two second oil ports and located outside the cylinder body, and the connecting pipe is in communication with the two second oil ports.
[0011] Further, the two second oil ports are close to the tie rod relative to the first oil port, and the axis projection of the two second oil ports is coincident with the axis projection of the cylinder body in the direction perpendicular to the end face of the free end, and the axis projection of the connecting pipe is coincident with the axis projection of the cylinder body.
[0012] Further, the outer end face of each of the plug rods is connected with an adjusting screw rod.
[0013] Further, the limiting blocks are welded with the tie rod and fixed with a fixed block close to the outer side wall of the knuckle, the fixed block extends along the axial direction of the cylinder body and is welded with the tie rod.
[0014] Further, a shock absorber is arranged below the tie rod, the two ends of the shock absorber are fixedly connected with the outer peripheral wall of the axle and the outer peripheral wall of the tie rod through fixing seats respectively, and the oil cylinder is fixed on the outer peripheral wall of the axle through the cylinder seat and located above the tie rod.
[0015] The axle steering structure of the utility model has the characteristics of simplicity, high stability and compactness.
[0016] The utility model embodiment further provides an axle, including the axle steering structure of any one of the above-mentioned embodiments. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the three-dimensional schematic view of the axle steering structure of the utility model embodiment;
[0018] Figure 2 It is the partial A enlarged view of Figure 1
[0019] Figure 3 It is the oil cylinder partial sectional view of Figure 1 . Detailed Implementation
[0020] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:
[0021] like Figures 1 to 3 As shown, this utility model embodiment provides an axle steering structure, which is installed on the axle 200 of the axle 100 of an agricultural vehicle or engineering vehicle, and includes two steering knuckles (unlabeled), a tie rod 1 and a hydraulic cylinder 2.
[0022] Two steering knuckles are respectively connected to the two ends of the axle 200. The two ends of the tie rod 1 are respectively connected to the two steering knuckles. Two limiting blocks 11 are fixed on the outer peripheral wall of the tie rod 1. Specifically, the limiting block 11 is welded and fixed to the tie rod 1, and a fixing block 111 is fixed on the outer side wall of the tie rod near the steering knuckle. The fixing block 111 extends along the axial direction of the cylinder 21 and is welded and fixed to the tie rod 1 to improve the structural strength.
[0023] The hydraulic cylinder 2 is fixed to the outer peripheral wall of the axle 200 and includes a cylinder body 21 located between two limiting blocks 11. Each end cap 22 is covered at both ends of the cylinder body 21. Each end cap 22 is threaded to the peripheral wall of the inner cavity 210 of the cylinder body 21 and has a sliding hole 221 extending through it along the axial direction of the cylinder body 21. The outer peripheral wall of the cylinder body 21 has a first oil port 211 and two second oil ports 212 communicating with the inner cavity 210 of the cylinder body 21. The first oil port 211 and the second oil ports 212 are connected to the vehicle's hydraulic system via oil pipes to supply hydraulic oil to the inner cavity 210. The two second oil ports 212 are located on one side of the first oil port 211.
[0024] The inner cavity 210 is slidably fitted with two pistons 23 between the two end covers 22, each of the two pistons 23 and the corresponding end cover 22 forms a chamber 24, the chamber 24 is communicated with a second oil port 212, and the inner end faces of the two pistons 23 form a containing chamber 25 communicated with the first oil port 211, the outer end face of each piston 23 is provided with a plug rod 231, the outer end of each plug rod 231 is slidably fitted with a sliding hole 221 and extends out of the cylinder body 21, and the outer end of a plug rod 231 corresponds to a limiting block 11 and abuts against each other. When the steering structure of the axle 100 is self-locked, the hydraulic system injects hydraulic oil into the containing chamber 25 through the first oil port 211, the two plug rods 231 move towards the two limiting blocks 11 (i.e. move outward) under the action of the hydraulic oil and abut against the two limiting blocks 11 respectively, that is, the force exerted by the oil cylinder 2 on the tie rod 1 is increased through the two plug rods 231, thereby improving the stability of the self-locking state, so that the vehicle can be in a stable straight driving state; when the steering structure of the axle 100 is unlocked, the hydraulic system injects hydraulic oil into the two chambers 24 through the second oil port 212, the two plug rods 231 move inward under the action of the hydraulic oil until reset, so that the vehicle can turn normally, at the same time, the hydraulic oil in the containing chamber 25 flows out from the first oil port 211.
[0025] A second oil port 212 is located between one end cover 22 and one side of the first oil port 211 and is close to the end cover 22 relative to the first oil port 211 to ensure the stroke of the piston 23 in a limited space, and one piston 23 is located between a first oil port 211 and a second oil port 212. The first oil port 211 and the two second oil ports 212 protrude outward relative to the outer peripheral wall of the cylinder body 21, and the free ends 2121 between the two second oil ports 212 are connected with a connecting pipe 26 located outside the cylinder body 21, the connecting pipe 26 is communicated with the two second oil ports 212 to ensure that the pressures of the two chambers 24 are the same, when hydraulic oil is injected into the two chambers 24, the hydraulic oil flows into the two chambers 24 from one of the two second oil ports 212, at this time, the other of the two second oil ports 212 is closed. In order to reasonably utilize the installation space, the two second oil ports 212 are arranged close to the tie rod 1 relative to the first oil port 211, as viewed in the direction perpendicular to the end face of the free end 2121, the axis projection of the two second oil ports 212 coincides with the axis projection of the cylinder body 21, and the axis projection of the connecting pipe 26 coincides with the axis projection of the cylinder body 21.
[0026] In order to facilitate the adjustment of the distance between the plug rod 231 and the limiting block 11, so that the vehicle can adapt to different road conditions, in the embodiment, the outer end face of each plug rod 231 is threadedly connected with an adjusting screw 232, when it is necessary to adjust the distance between the plug rod 231 and the limiting block 11, the adjusting screw 232 is rotated to the target position, thereby improving the flexibility of use.
[0027] The axle steering structure further comprises a shock absorber 3 located below the tie rod 1, two ends of the shock absorber 3 are fixedly connected with the outer peripheral wall of the axle 200 and the outer peripheral wall of the tie rod 1 through fixing seats, and the oil cylinder 2 is fixed on the outer peripheral wall of the axle 200 through a cylinder seat 27 and is located above the tie rod 1. By setting the positional relationship among the shock absorber 3, the tie rod 1 and the oil cylinder 2, the installation space is saved, and the axle 100 is compact in structure.
[0028] The axle steering structure of the utility model has the characteristics of simplicity, high stability and compactness.
[0029] The utility model embodiment further provides a kind of axle 100, including the axle steering structure described in any of the above embodiments.
[0030] The above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.
Claims
1. A vehicle axle steering structure mounted on an axle, characterized by, Two knuckles, a tie rod and an oil cylinder are included. The two knuckles are connected to the two ends of the axle respectively. The two ends of the tie rod are connected to the two knuckles respectively, and the outer wall of the tie rod is fixed with two limiting blocks. The oil cylinder is fixed on the outer wall of the axle and includes a cylinder body between the two limiting blocks, each end cover of the cylinder body is provided with a sliding hole penetrating along the axial direction of the cylinder body, the outer wall of the cylinder body is provided with a first oil port and two second oil ports which are in communication with the inner cavity of the cylinder body, the two second oil ports are located on one side of the first oil port, the inner cavity is slidably fitted with two pistons between the two end covers, each chamber is formed between the piston and the corresponding end cover, each piston is provided with a plug rod, the outer end of each plug rod is slidably fitted with the corresponding sliding hole and extends out of the cylinder body, and the outer end of the plug rod corresponds to the limiting block.
2. The axle steering arrangement of claim 1, wherein, One of the second oil ports is located between the end cover and one side of the first oil port and is close to the end cover relative to the first oil port, and one of the pistons is located between the first oil port and the second oil port.
3. The axle steering arrangement of claim 1, wherein, The first oil port and the two second oil ports protrude outward relative to the outer wall of the cylinder body, and the free ends of the two second oil ports are connected by a connecting pipe outside the cylinder body, which is in communication with the two second oil ports.
4. The axle steering arrangement of claim 3, wherein, The two second oil ports are close to the tie rod relative to the first oil port, and the axis projection of the two second oil ports coincides with the axis projection of the cylinder body in the direction perpendicular to the end face of the free end, and the axis projection of the connecting pipe coincides with the axis projection of the cylinder body.
5. The axle steering arrangement of claim 1, wherein, The outer end surface of each plug rod is connected to an adjusting screw.
6. The axle steering arrangement of claim 1, wherein, The limiting block is welded to the outer wall of the tie rod and is fixed with a fixed block close to the knuckle, the fixed block extends along the axial direction of the cylinder body and is welded to the outer wall of the tie rod.
7. The axle steering arrangement of claim 1, wherein, A shock absorber is included below the tie rod, the two ends of the shock absorber are fixedly connected to the outer wall of the axle and the outer wall of the tie rod through the fixing seat, and the oil cylinder is fixed to the outer wall of the axle through the cylinder seat and is located above the tie rod.
8. Vehicle axle, characterized in that The axle steering structure includes the axle steering structure according to any one of claims 1 to 7.