CN118025312A - Four-wheel steering tractor - Google Patents

Four-wheel steering tractor Download PDF

Info

Publication number
CN118025312A
CN118025312A CN202410313420.9A CN202410313420A CN118025312A CN 118025312 A CN118025312 A CN 118025312A CN 202410313420 A CN202410313420 A CN 202410313420A CN 118025312 A CN118025312 A CN 118025312A
Authority
CN
China
Prior art keywords
driving wheels
wheel
steering
axle steering
steering mechanism
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202410313420.9A
Other languages
Chinese (zh)
Inventor
朱晓岩
于博
马忠强
杨绪杰
李超
李黎宁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weichai Lovol Intelligent Agricultural Technology Co Ltd
Original Assignee
Weichai Lovol Intelligent Agricultural Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Weichai Lovol Intelligent Agricultural Technology Co Ltd filed Critical Weichai Lovol Intelligent Agricultural Technology Co Ltd
Priority to CN202410313420.9A priority Critical patent/CN118025312A/en
Publication of CN118025312A publication Critical patent/CN118025312A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/06—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
    • B62D7/14—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
    • B62D7/142—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering specially adapted for particular vehicles, e.g. tractors, carts, earth-moving vehicles, trucks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/003—Steerable axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/12—Torque-transmitting axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
    • B60K5/12—Arrangement of engine supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
    • B62D25/105—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles for motor cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
    • B62D25/12—Parts or details thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)

Abstract

The invention relates to a four-wheel steering tractor which comprises a complete machine, a front axle steering mechanism, a rear axle steering mechanism, two front driving wheels and two rear driving wheels, wherein the front axle steering mechanism and the rear axle steering mechanism are respectively arranged at the front end and the rear end of the bottom of the complete machine, and the front axle steering mechanism is connected with the rear axle steering mechanism through a waist twisting mechanism; the two front driving wheels are rotatably arranged at two sides of the front axle steering mechanism in a relative manner, and the two rear driving wheels are rotatably arranged at two sides of the rear axle steering mechanism in a relative manner. The invention has the advantages of simple structure, reasonable design, capability of meeting the requirements of high-standard emission and multifunctional operation and convenient operation; in addition, the layout mode of the front engine is compact in structure and can save space.

Description

Four-wheel steering tractor
Technical Field
The invention relates to the technical field of tractors, in particular to a four-wheel steering tractor.
Background
The tractor is a common agricultural machine, and the tractor in the prior art has large overall dimension, large turning radius and poor trafficability, and cannot adapt to the small land work requirements under the complex terrain conditions.
Disclosure of Invention
The invention provides a four-wheel steering tractor, which aims to solve the problems in the prior art.
The technical scheme for solving the technical problems is as follows:
The four-wheel steering tractor comprises a complete machine, a front axle steering mechanism, a rear axle steering mechanism, two front driving wheels and two rear driving wheels, wherein the front axle steering mechanism and the rear axle steering mechanism are respectively arranged at the front end and the rear end of the bottom of the complete machine, and the front axle steering mechanism is connected with the rear axle steering mechanism through a waist twisting mechanism; the two front driving wheels are rotatably installed on two sides of the front axle steering mechanism in a relative mode, and the two rear driving wheels are rotatably installed on two sides of the rear axle steering mechanism in a relative mode.
The beneficial effects of the invention are as follows: the invention has simple structure and reasonable design, can meet the requirements of high-standard emission and multifunctional operation, and is convenient to operate.
On the basis of the technical scheme, the invention can be improved as follows.
Further, an engine is fixedly arranged at the front end of the whole machine, and the engine is in transmission connection with the front axle steering mechanism through a gearbox.
The beneficial effect of adopting above-mentioned further scheme is that the engine lays rationally, and occupation space is little.
Further, the whole machine comprises a frame and a hood, the engine is fixedly arranged on the upper side of the front end of the frame, and the hood is covered outside the engine; the front axle steering mechanism and the rear axle steering mechanism are respectively arranged on the frame and are respectively positioned outside the hood.
The beneficial effect of adopting above-mentioned further scheme is that the structure setting of complete machine is reasonable, conveniently lays the engine, further saves space.
Further, the engine is located at a front end or a rear end of the front axle steering mechanism.
The beneficial effect of adopting above-mentioned further scheme is that the engine lays rationally, and occupation space is little.
Further, the front axle steering mechanism comprises a front axle shell, two front axle transmission shafts and a front axle steering assembly, wherein the front axle shell is fixedly arranged at the front end of the bottom of the whole machine and is connected with the rear axle steering mechanism through the waist twisting mechanism; the two front axle transmission shafts are horizontally and relatively rotatably arranged at two sides of the front axle shell, and the two front driving wheels are respectively rotatably arranged at one ends of the two front axle transmission shafts which are far away from each other; the front axle steering assembly is arranged on the front axle shell and is in transmission connection with the two front driving wheels.
The beneficial effect of adopting the further scheme is that in the running process, the power of the engine is transmitted to two front axle transmission shafts through the gearbox, and the two front axle transmission shafts drive the two front driving wheels to rotate so as to run; in addition, steering of the front drive wheels may be achieved by the front axle steering assembly.
Further, the rear axle steering mechanism comprises a rear axle shell, two rear axle transmission shafts and a rear axle steering assembly, wherein the rear axle shell is fixedly arranged at the rear end of the bottom of the whole machine and is connected with the front axle shell through the waist twisting mechanism; the two rear axle transmission shafts are horizontally and relatively rotatably arranged at two sides of the rear axle shell, and the two rear driving wheels are respectively rotatably arranged at one ends of the two rear axle transmission shafts which are far away from each other; the rear axle steering assembly is arranged on the rear axle shell and is in transmission connection with the two rear driving wheels.
The beneficial effect of adopting the further scheme is that in the running process, the power of the engine is transmitted to the two front axle transmission shafts through the gearbox, the two front axle transmission shafts drive the two front driving wheels to rotate for running, and the two rear driving wheels rotate along with the rotation; in addition, steering of the rear drive wheels can be achieved by the rear axle steering assembly.
Further, a hydraulic control mechanism is further installed on the whole machine and is respectively connected with the front axle steering assembly and the rear axle steering assembly.
The hydraulic control mechanism is used for providing oil for the front axle steering assembly and the rear axle steering assembly in the driving process so that the front driving wheels and the rear driving wheels steer.
Further, the wheel diameters of the two front driving wheels are equal to the wheel diameters of the two rear driving wheels.
The technical scheme has the beneficial effects that the wheel diameters of the front driving wheel and the rear driving wheel are reasonable, and synchronous steering or asynchronous steering of the front driving wheel and the rear driving wheel can be realized.
Further, the wheel diameters of the two front driving wheels are larger than the wheel diameters of the two rear driving wheels.
The technical scheme has the beneficial effects that the wheel diameters of the front driving wheel and the rear driving wheel are reasonable, and synchronous steering or asynchronous steering of the front driving wheel and the rear driving wheel can be realized.
Further, the wheel diameters of the two front driving wheels are smaller than the wheel diameters of the two rear driving wheels.
The technical scheme has the beneficial effects that the wheel diameters of the front driving wheel and the rear driving wheel are reasonable, and synchronous steering or asynchronous steering of the front driving wheel and the rear driving wheel can be realized.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a schematic view of the engine front-end structure of the present invention;
FIG. 5 is a schematic view of an engine according to the present invention;
FIG. 6 is a schematic diagram of a hydraulic control mechanism according to the present invention;
fig. 7 is a schematic structural diagram of the whole machine in the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. a complete machine; 2. a front axle steering mechanism; 3. a rear axle steering mechanism; 4. a front drive wheel; 5. a rear drive wheel; 6. a waist twisting mechanism; 7. an engine; 8. and a hydraulic control mechanism.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
As shown in fig. 1 to 7, the present embodiment provides a four-wheel steering tractor, which comprises a complete machine 1, a front axle steering mechanism 2, a rear axle steering mechanism 3, two front driving wheels 4 and two rear driving wheels 5, wherein the front axle steering mechanism 2 and the rear axle steering mechanism 3 are respectively installed at the front end and the rear end of the bottom of the complete machine 1, and the front axle steering mechanism 2 and the rear axle steering mechanism 3 are connected through a waist twisting mechanism 6; the two front driving wheels 4 are rotatably installed at two sides of the front axle steering mechanism 2, and the two rear driving wheels 5 are rotatably installed at two sides of the rear axle steering mechanism 3.
The embodiment has simple structure and reasonable design, can meet the requirements of high-standard emission and multifunctional operation, and is convenient to operate.
Example 2
In this embodiment, an engine 7 is fixedly mounted at the front end of the complete machine 1, and the engine 7 is in transmission connection with the front axle steering mechanism 2 through a gearbox.
The engine 7 is reasonably arranged and occupies small space.
Example 3
On the basis of embodiment 2, in this embodiment, the complete machine 1 includes a frame and a hood, the engine 7 is fixedly installed on the upper side of the front end of the frame, and the hood is outside the engine 7; the front axle steering mechanism 2 and the rear axle steering mechanism 3 are respectively arranged on the frame and are respectively positioned outside the hood.
The whole machine 1 is reasonable in structural arrangement, the engine is conveniently arranged, and the space is further saved.
Example 4
In this embodiment, the engine is located at the front end or the rear end of the front axle steering mechanism 2 on the basis of any one of embodiments 2 to 3.
The engine 7 is reasonably arranged and occupies small space.
Example 5
On the basis of the above embodiments, in this embodiment, the front axle steering mechanism 2 includes a front axle housing, two front axle transmission shafts, and a front axle steering assembly, where the front axle housing is fixedly installed at the front end of the bottom of the complete machine 1, and is connected with the rear axle steering mechanism 3 through the waist twisting mechanism 6; the two front axle transmission shafts are horizontally and relatively rotatably arranged at two sides of the front axle shell, and the two front driving wheels 4 are respectively rotatably arranged at one ends of the two front axle transmission shafts far away from each other; the front axle steering assembly is mounted on the front axle housing in driving connection with two of the front driving wheels 4.
In the running process, the power of the engine 7 is transmitted to two front axle transmission shafts through a gearbox, and the two front axle transmission shafts drive the two front driving wheels 4 to rotate so as to run; in addition, steering of the front drive wheels 4 may be achieved by a front axle steering assembly.
Based on the scheme, one ends of the two front axle transmission shafts, which are close to each other, extend into the front axle housing respectively and are connected with the gearbox in a transmission way respectively; one end of the two front axle transmission shafts, which are far away from each other, is respectively connected with the two front driving wheels 4 in a rotating way through a cross universal joint.
In addition, the front axle steering assembly comprises a center penetrating oil cylinder, the center penetrating oil cylinder is fixedly arranged on the front axle shell, two ends of the center penetrating oil cylinder extend along the direction from one side to the other side of the front axle shell respectively, and the center penetrating oil cylinder is connected with the flange plates on the two front driving wheels in a rotating mode through connecting rods respectively.
Example 6
In this embodiment, the rear axle steering mechanism 3 includes a rear axle housing, two rear axle transmission shafts, and a rear axle steering assembly, where the rear axle housing is fixedly installed at the rear end of the bottom of the complete machine 1, and is connected with the front axle housing through the waist twisting mechanism 6; the two rear axle transmission shafts are horizontally and relatively rotatably arranged at two sides of the rear axle shell, and the two rear driving wheels 5 are respectively rotatably arranged at one ends of the two rear axle transmission shafts which are far away from each other; the rear axle steering assembly is mounted on the rear axle housing in driving connection with two of the rear drive wheels 5.
In the running process, the power of the engine 7 is transmitted to two front axle transmission shafts through a gearbox, the two front axle transmission shafts drive the two front driving wheels 4 to rotate for running, and the two rear driving wheels 5 rotate along with the rotation; in addition, steering of the rear drive wheels 5 can be achieved by a rear axle steering assembly.
Based on the above scheme, the one ends of the two rear axle transmission shafts, which are far away from each other, are respectively connected with the two rear driving wheels 5 in a rotating way through cross universal joints.
In addition, the rear axle steering assembly comprises a through oil cylinder, the through oil cylinder is fixedly arranged on the rear axle shell, and two ends of the through oil cylinder extend along the direction from one side to the other side of the rear axle shell and are respectively connected with flange plates on the two rear driving wheels in a rotating manner through connecting rods.
Example 7
On the basis of embodiment 6, in this embodiment, a hydraulic control mechanism 8 is further installed on the complete machine 1, and the hydraulic control mechanism 8 is respectively connected with the front axle steering assembly and the rear axle steering assembly.
During running, the hydraulic control mechanism 8 is utilized to provide oil for the front axle steering assembly and the rear axle steering assembly so as to steer the front driving wheels and the rear driving wheels.
Preferably, in this embodiment, the hydraulic control mechanism 8 is respectively communicated with the cavities of the two through cylinders through pipelines, and oil is provided for the two through cylinders through the hydraulic control mechanism 8.
In addition, the hydraulic control mechanism 8 is a prior art, and the specific structure and principle thereof will not be described herein.
Example 8
In this embodiment, the wheel diameters of the two front driving wheels 4 are equal to the wheel diameters of the two rear driving wheels 5 on the basis of any one of embodiment 1 to embodiment 7.
The wheel diameters of the front driving wheel 4 and the rear driving wheel 5 are reasonable, and synchronous steering or asynchronous steering of the front driving wheel and the rear driving wheel can be realized.
Example 9
In this embodiment, the wheel diameters of the two front driving wheels 4 are larger than the wheel diameters of the two rear driving wheels 5 on the basis of any one of embodiment 1 to embodiment 7.
The wheel diameters of the front driving wheel 4 and the rear driving wheel 5 are reasonable, and synchronous steering or asynchronous steering of the front driving wheel and the rear driving wheel can be realized.
Example 10
In this embodiment, the wheel diameters of the two front driving wheels 4 are smaller than the wheel diameters of the two rear driving wheels 5 on the basis of any one of embodiment 1 to embodiment 7.
The wheel diameters of the front driving wheel 4 and the rear driving wheel 5 are reasonable, and synchronous steering or asynchronous steering of the front driving wheel and the rear driving wheel can be realized.
The above examples 8, 9 and 10 are parallel schemes.
The working principle of the invention is as follows:
In the running process, the power of the engine 7 is transmitted to two front axle transmission shafts through a gearbox, the two front axle transmission shafts drive the two front driving wheels 4 to rotate for running, and the two rear driving wheels 5 rotate along with the rotation;
In addition, the hydraulic control mechanism 8 is respectively communicated with the cavities of the two through cylinders through pipelines, and oil is provided for the two through cylinders through the hydraulic control mechanism 8 so as to control the two through cylinders to stretch and retract and drive the two front driving wheels 4 and the two rear driving wheels 5 to steer.
The tractor provided by the invention has the following characteristics: the maximum climbing gradient is more than or equal to 25 degrees; the limit tipping angle is more than or equal to 35 degrees; braking deceleration is less than or equal to 4.5m/s2; minimum steering radius: less than or equal to 3m; the adjusting angle of the transverse posture (suspension device) of the whole machine and the machine is more than or equal to 20 degrees; the adjustment angle of the driving posture and the transverse posture (suspension device) of the machine tool is more than or equal to 20 degrees.
The steering mode of the tractor provided by the invention is as follows:
(1) The front driving wheels are independently turned, and the middle position of the rear driving wheels is locked under the turning mode of the front driving wheels;
(2) The rear driving wheels individually steer;
(3) The front and rear driving wheels turn simultaneously, and in a four-wheel steering mode, the rear driving wheels follow the front driving wheels, and when the rear driving wheels switch the steering mode at any position, the rear driving wheels can automatically return to the middle position.
It should be noted that, all the electronic components related to the present invention adopt the prior art, and the above components are electrically connected to the controller, and the control circuit between the controller and the components is the prior art.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims (10)

1. A four-wheel steering tractor, characterized in that: the front axle steering mechanism (2) and the rear axle steering mechanism (3) are respectively arranged at the front end and the rear end of the bottom of the whole machine (1), and the front axle steering mechanism (2) is connected with the rear axle steering mechanism (3) through a waist twisting mechanism (6); the two front driving wheels (4) are rotatably arranged on two sides of the front axle steering mechanism (2) in a relative mode, and the two rear driving wheels (5) are rotatably arranged on two sides of the rear axle steering mechanism (3) in a relative mode.
2. The four-wheel-steering tractor of claim 1, wherein: an engine (7) is fixedly arranged at the front end of the whole machine (1), and the engine (7) is in transmission connection with the front axle steering mechanism (2) through a gearbox.
3. The four-wheel-steering tractor according to claim 2, wherein: the whole machine (1) comprises a frame and a hood, the engine (7) is fixedly arranged on the upper side of the front end of the frame, and the hood is covered outside the engine (7); the front axle steering mechanism (2) and the rear axle steering mechanism (3) are respectively arranged on the frame.
4. The four-wheel-steering tractor according to claim 2, wherein: the engine (7) is positioned at the front end or the rear end of the front axle steering mechanism (2).
5. The four-wheel-steering tractor according to any one of claims 1 to 4, wherein: the front axle steering mechanism (2) comprises a front axle shell, two front axle transmission shafts and a front axle steering assembly, wherein the front axle shell is fixedly arranged at the front end of the bottom of the whole machine (1) and is connected with the rear axle steering mechanism (3) through the waist twisting mechanism (6); the two front axle transmission shafts are horizontally and relatively rotatably arranged at two sides of the front axle shell, and the two front driving wheels (4) are respectively rotatably arranged at one ends of the two front axle transmission shafts, which are far away from each other; the front axle steering assembly is arranged on the front axle shell and is in transmission connection with the two front driving wheels (4).
6. The four-wheel-steering tractor as defined by claim 5 wherein: the rear axle steering mechanism (3) comprises a rear axle shell, two rear axle transmission shafts and a rear axle steering assembly, wherein the rear axle shell is fixedly arranged at the rear end of the bottom of the whole machine (1) and is connected with the front axle shell through the waist twisting mechanism (6); the two rear axle transmission shafts are horizontally and relatively rotatably arranged at two sides of the rear axle shell, and the two rear driving wheels (5) are respectively rotatably arranged at one ends of the two rear axle transmission shafts which are far away from each other; the rear axle steering assembly is arranged on the rear axle shell and is in transmission connection with the two rear driving wheels (5).
7. The four-wheel-steering tractor as defined in claim 6, wherein: the hydraulic control mechanism (8) is further arranged on the whole machine (1), and the hydraulic control mechanism (8) is respectively connected with the front axle steering assembly and the rear axle steering assembly.
8. The four-wheel-steering tractor according to any one of claims 1 to 4, wherein: the wheel diameters of the two front driving wheels (4) are equal to the wheel diameters of the two rear driving wheels (5).
9. The four-wheel-steering tractor according to any one of claims 1 to 4, wherein: the wheel diameters of the two front driving wheels (4) are larger than the wheel diameters of the two rear driving wheels (5).
10. The four-wheel-steering tractor according to any one of claims 1 to 4, wherein: the wheel diameters of the two front driving wheels (4) are smaller than the wheel diameters of the two rear driving wheels (5).
CN202410313420.9A 2024-03-19 2024-03-19 Four-wheel steering tractor Pending CN118025312A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410313420.9A CN118025312A (en) 2024-03-19 2024-03-19 Four-wheel steering tractor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410313420.9A CN118025312A (en) 2024-03-19 2024-03-19 Four-wheel steering tractor

Publications (1)

Publication Number Publication Date
CN118025312A true CN118025312A (en) 2024-05-14

Family

ID=90993287

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202410313420.9A Pending CN118025312A (en) 2024-03-19 2024-03-19 Four-wheel steering tractor

Country Status (1)

Country Link
CN (1) CN118025312A (en)

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