CN215552391U - Steering drive axle with active suspension applied to tractor - Google Patents
Steering drive axle with active suspension applied to tractor Download PDFInfo
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- CN215552391U CN215552391U CN202122097932.0U CN202122097932U CN215552391U CN 215552391 U CN215552391 U CN 215552391U CN 202122097932 U CN202122097932 U CN 202122097932U CN 215552391 U CN215552391 U CN 215552391U
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- swing arm
- main reduction
- reduction gearbox
- steering
- steering knuckle
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Abstract
The utility model relates to the technical field of steering drive axles, and discloses a steering drive axle with an active suspension frame applied to a tractor, which comprises a main reduction gearbox connected with a tractor frame, one side of the main reduction gearbox is provided with an upper swing arm, one end of the upper swing arm is hinged with the main reduction gearbox, the other end of the upper swing arm is provided with a steering knuckle, the upper swing arm is hinged with the steering knuckle, a lower swing arm is arranged below the upper swing arm, one end of the lower swing arm is hinged with the main reduction box body through two hinge points, the other end of the lower swing arm is hinged with a steering knuckle, two sides of the main reduction gearbox are provided with driving suspension oil cylinders, a universal transmission shaft is arranged between the steering knuckle and the main reduction gearbox, a steering oil cylinder is arranged on the outer side of the main reduction gearbox, and the other side of the steering oil cylinder is connected with the steering knuckle, so that the technical problem that the passing performance and stability of a vehicle cannot be effectively met by using a traditional integral axle is solved.
Description
Technical Field
The utility model relates to the technical field of steering drive axles, in particular to a steering drive axle with an active suspension applied to a tractor.
Background
Description of the background of the utility modelthe art to which the present invention pertains is presented solely for the purpose of illustration and understanding the context of the present invention and is not to be construed as an admission or admission that the applicant is aware or appreciates that such prior art forms part of the present invention as the first filing date of the present application.
At present, the structure of the steering drive axle of the tractor in China has no revolutionary breakthrough for many years, the steering drive axle of the traditional tractor generally adopts an integral non-independent suspension structure, the structure has very high rigidity, and is suitable for heavy-load operation of farmlands, and particularly on a high-horsepower tractor, the integral axle can provide larger load. The swing shaft structure enables the vehicle to follow the height shape of the ground, the height of the vehicle body is adjusted in a self-adaptive mode, and the influence of uneven ground of most farmlands on trafficability and stability can be eliminated.
However, with the rise of unmanned tractors in recent years, the vehicles are required to meet not only the driving requirements but also higher requirements on the stability and body posture of the vehicles by automatic driving and high-precision positioning. To the scene that needs real-time maintenance automobile body fixed gesture and the mountain land ground of especially complicated mountain region hills, use traditional integral axle then can't effectual the satisfying vehicle to the demand of trafficability characteristic and stability, on meetting great barrier, darker pit and on the mountain region of great slope, then can't provide effectual drive power for getting rid of poverty, going, work. Due to the design of the non-independent suspension of the steering drive axle, the non-suspension mass is large, and the driving smoothness of the tractor is greatly influenced; the tie rod is arranged in front, and due to the Ackerman principle, the tie rod can be very long, and both ends of the tie rod extend to the inner side of the tire generally to influence the movement of the wheels; the front axle transmission generally uses a main speed reduction and wheel edge speed reduction structure, a larger speed reduction ratio can be obtained at the front axle, but the transmission structure of the front axle is also more complex, and the maintenance cost is increased.
Meanwhile, the structure of the front axle is limited, the front axle generally adopts smaller tires, and the smaller tires provide smaller driving force relative to the large tires.
To this end, we propose a steer-drive axle with active suspension for use in a tractor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a steering drive axle with an active suspension, which is applied to a tractor and has smooth running, strong suspension rigidity and high transmission efficiency.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
the utility model provides a be applied to steering drive axle of taking initiative suspension of tractor, includes the main reduction gearbox with tractor frame connection, main reduction gearbox one side is provided with the swing arm, it is articulated with the main reduction gearbox to go up swing arm one end, it is provided with the knuckle to go up the swing arm other end, it is articulated with the knuckle to go up the swing arm, it is provided with down the swing arm to go up the swing arm below, swing arm one end is articulated with the main reduction gearbox body through two articulated points down, the swing arm other end is articulated with the knuckle down, the main reduction gearbox both sides are provided with initiative suspension hydro-cylinder, be provided with universal drive shaft between knuckle and the main reduction gearbox, the main reduction gearbox outside is provided with steering cylinder, steering cylinder activity opposite side and knuckle are connected.
As a preferred technical scheme, the tail end of the upper swing arm is hinged with the steering knuckle through a ball joint bearing, the tail end of the lower swing arm is hinged with the lower part of the steering knuckle through a ball joint bearing, and two ends of a steering oil cylinder are respectively connected with the steering knuckle and a main reduction gearbox through joint bearings.
As a preferred technical scheme, a lower swing arm support is arranged on the lower swing arm, the active suspension oil cylinder comprises a piston rod and a cylinder barrel, and the tail end of the piston rod is connected with the lower swing arm support through a joint bearing.
In a preferable technical scheme, the active suspension cylinder inclines towards the inner side of the vehicle body, and a triangular structure is formed among the active suspension cylinder, the main speed reduction box body and the lower swing arm.
As a preferred technical scheme, the universal transmission shaft is a ball-cage universal transmission shaft, one side of the ball-cage universal transmission shaft is connected with the shaft diameter of a steering knuckle by a bearing, and the tail end of the universal transmission shaft is provided with a spline to be inserted into a flange disc of a wheel hub.
As a preferred technical scheme, the outer side of the main reduction gearbox is provided with four supports for connecting other mechanisms, and the four supports are uniformly distributed along the circumference of the main reduction gearbox.
As a preferable technical solution, the width of the lower swing arm is larger than the width of the upper swing arm.
By adopting the technical scheme, the active independent suspension structure is adopted, the non-suspension mass of the tractor is reduced, the wheels on two sides can rotate independently relative to each other without influencing each other, the running smoothness of the agricultural machine is greatly improved, and the agricultural machine is suitable for complex mountain and hilly environments. When the ground is uneven, the posture is adjusted by controlling the expansion and contraction of the active suspension oil cylinder to adjust the height of the corresponding vehicle body side. The design mode adopts a mode of adjusting the suspension on one side or two sides, and is matched with a vehicle body structure to adjust the gravity center offset height of a front axle, so that the fixed posture of the vehicle body is kept, and the shock absorption and support effect is good.
The driving suspension oil cylinders are supported in the middle of the lower swing arm, the driving suspension oil cylinders on the two sides incline oppositely, and a triangular structure is formed between the driving suspension oil cylinders and the main speed reduction box body and the lower swing arm. The upper swing arm and the lower swing arm are used, so that the rigidity of the bridge is better increased, the angle and the wheel track change of the wheels and the main pin are not too large, and the possibility of side slipping of the wheels is reduced.
The design of the lower swing arm with proper width can effectively protect the transmission shaft from being impacted by sundries on the ground. The universal transmission shaft is designed into a ball cage universal joint structure, constant-speed transmission is realized, transmission efficiency is high, and the universal transmission provides higher degree of freedom for realizing vehicle body posture adjustment of the active suspension. Joint bearings are used at joints of all the parts, the relative motion of the whole mechanism is coordinated, the parts are protected, and the service life is prolonged.
Drawings
Fig. 1 is a schematic structural view of a steering drive axle with an active suspension applied to a tractor.
In the figure: 1-a main reduction gearbox; 2-an active suspension cylinder; 3-upper swing arm; 4-a knuckle; 5-a rzeppa universal drive shaft; 6-lower swing arm support; 7-lower swing arm; 8-steering oil cylinder.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in figure 1, the steering drive axle with the active suspension applied to the tractor comprises a main reduction gearbox 1 connected with a tractor frame, wherein four supports for connecting other mechanisms are arranged on the outer side of the main reduction gearbox 1, and the four supports are uniformly distributed along the circumference of the main reduction gearbox 1.
One end of the upper swing arm 3 is hinged with the main reduction gearbox 1, and the upper swing arm 3 can swing up and down relative to the main reduction gearbox 1 along the vertical direction; the other end of the upper swing arm 3 is hinged with a steering knuckle 4 through a ball joint bearing, the steering knuckle 4 can freely rotate on the horizontal plane relative to the upper swing arm 3, and a certain degree of freedom is formed in the vertical plane, so that the suspension function is realized.
The lower swing arm 7 is designed as a wide yoke structure. One end of the lower swing arm 7 is hinged with the main reduction gearbox 1 through two hinge points, and the lower swing arm 7 can swing up and down relative to the main reduction gearbox 1 along the vertical direction; the other end of the lower swing arm 7 is hinged with the lower part of the steering knuckle 4 through a ball joint bearing, the steering knuckle 4 can freely rotate on the horizontal plane relative to the upper swing arm 3, and a certain degree of freedom is formed in the vertical plane.
The width of the lower swing arm 7 is larger than that of the upper swing arm 3. Lower swing arm 7 design broad can provide the higher rigidity of suspension on the one hand, and the lower swing arm 7 of broad has fender mud effect on the other hand, plays the guard action to structures such as universal drive shaft.
The active suspension oil cylinder 2 is designed to use a double-acting oil cylinder, wherein a piston rod is downwards connected to a lower swing arm support 6 through a joint bearing, the side surface of a cylinder barrel is connected to the upper surface of a main reduction gearbox 1 through the joint bearing, and the active suspension oil cylinder 2 is designed to incline towards the inner side of a vehicle body to form a triangular structure with the main reduction gearbox 1 and a lower swing arm 7.
The universal transmission shaft adopts a ball cage type universal transmission shaft 5, one end of the ball cage type universal transmission shaft 5 is a ball cage universal joint, and a half shaft is arranged at the tail end of the ball cage universal joint.
One end of the main speed reducer is connected with the main speed reducer to transmit power from the main speed reducer; the other end is connected with the wheel to transmit power to the tire. The universal transmission shaft can axially extend and retract to compensate the axial displacement caused by the swing of the suspension. The constant speed transmission characteristic of the rzeppa universal transmission shaft 5 can ensure that the same stable speed output is realized when the suspension swings to any angle.
The steering oil cylinder 8 adopts a single-rod steering oil cylinder, so that the installation space is saved.
The traditional vertical shaft design is removed from the steering knuckle 4, the design of the same axis line with the transmission universal transmission shaft is adopted, the outer universal transmission shaft is connected with the shaft diameter of the steering knuckle 4 through a bearing, the tail end is provided with a spline and inserted into a flange disc of a wheel hub, and the steering knuckle 4 can swing up and down, left and right relative to the universal transmission shaft due to the fact that the universal transmission shaft is in a ball cage universal joint mode. The steering tie rod is arranged at the rear and is connected with the steering arm through a ball head rod end joint bearing, so that the space swing range is large. The single-rod steering oil cylinder is arranged on the outer side of the front axle, and two ends of the single-rod steering oil cylinder are respectively connected to the steering knuckle 4 and the main reduction gearbox 1 through knuckle bearings.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, and the scope of protection is still within the scope of the utility model.
Claims (7)
1. The utility model provides a be applied to steering drive axle of taking initiative suspension of tractor, includes the main reducing gear box of being connected with the tractor frame, its characterized in that: the hydraulic transmission device is characterized in that an upper swing arm is arranged on one side of the main reduction gearbox, one end of the upper swing arm is hinged to the main reduction gearbox, a steering knuckle is arranged at the other end of the upper swing arm, the upper swing arm is hinged to the steering knuckle, a lower swing arm is arranged below the upper swing arm, one end of the lower swing arm is hinged to the main reduction gearbox body through two hinged points, the other end of the lower swing arm is hinged to the steering knuckle, driving suspension oil cylinders are arranged on two sides of the main reduction gearbox, a universal transmission shaft is arranged between the steering knuckle and the main reduction gearbox, a steering oil cylinder is arranged on the outer side of the main reduction gearbox, and the other side of the steering oil cylinder is connected with the steering knuckle.
2. A steer-drive axle with active suspension for a tractor according to claim 1, wherein: the tail end of the upper swing arm is hinged with the steering knuckle through a ball joint bearing, the tail end of the lower swing arm is hinged with the lower part of the steering knuckle through a ball joint bearing, and two ends of a steering oil cylinder are respectively connected with the steering knuckle and the main reduction gearbox through joint bearings.
3. A steer-drive axle with active suspension for a tractor according to claim 1, wherein: the active suspension oil cylinder comprises a piston rod and a cylinder barrel, and the tail end of the piston rod is connected with the lower swing arm support through a joint bearing.
4. A steer-drive axle with active suspension for a tractor according to claim 1 or 3, wherein: the active suspension oil cylinder inclines towards the inner side of the vehicle body, and the shape enclosed by the active suspension oil cylinder, the main reduction box body and the lower swing arm is triangular.
5. A steer-drive axle with active suspension for a tractor according to claim 1, wherein: the universal transmission shaft is a ball-cage universal transmission shaft, one side of the ball-cage universal transmission shaft is connected with the shaft diameter of the steering knuckle by a bearing, and the tail end of the universal transmission shaft is provided with a spline which is inserted into a flange disc of the wheel hub.
6. A steer-drive axle with active suspension for a tractor according to claim 1, wherein: the outer side of the main reduction gearbox is provided with four supports for connecting other mechanisms, and the four supports are uniformly distributed along the circumference of the main reduction gearbox.
7. A steer-drive axle with active suspension for a tractor according to claim 1, wherein: the width of the lower swing arm is larger than that of the upper swing arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122097932.0U CN215552391U (en) | 2021-09-01 | 2021-09-01 | Steering drive axle with active suspension applied to tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122097932.0U CN215552391U (en) | 2021-09-01 | 2021-09-01 | Steering drive axle with active suspension applied to tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215552391U true CN215552391U (en) | 2022-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122097932.0U Active CN215552391U (en) | 2021-09-01 | 2021-09-01 | Steering drive axle with active suspension applied to tractor |
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| Country | Link |
|---|---|
| CN (1) | CN215552391U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114407602A (en) * | 2022-02-22 | 2022-04-29 | 安徽车桥股份有限公司 | Side lift steering axle suspension |
-
2021
- 2021-09-01 CN CN202122097932.0U patent/CN215552391U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114407602A (en) * | 2022-02-22 | 2022-04-29 | 安徽车桥股份有限公司 | Side lift steering axle suspension |
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