A tractor

Abstract

The present invention relates to a tractor, which comprises a front counterweight assembly, a front driving wheel assembly, a power assembly, a hydraulic system assembly, a clutch assembly, a steering system assembly, a gearbox assembly, a control feedback system assembly, an electrical system assembly, a power output assembly, a lifting suspension system assembly, a front driving axle assembly, a rear driving wheel assembly and a brake system assembly; the control device of the hydraulic system assembly controls the clutch assembly, the power output assembly and the lifting suspension system assembly in linkage through the control feedback system assembly. The present invention realizes linkage control of the lifting suspension assembly and the power output assembly, realizes joint adjustment of lifting and power output, and realizes power disconnection and connection when different lifting heights are required for hooking different machines and implements, and has a simple structure, convenient adjustment and low manufacturing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery, in particular to a tractor. Background Art

[0002] During the use of traditional tractors and agricultural implements, the lifting suspension system and power output system need to be operated separately by the driver. If the tractor needs to lift the implement, the lifting operating handle needs to be operated separately. If power output is required, the power output operating device needs to be operated separately. In actual operation, the driver needs to repeatedly operate the lifting and power output clutch operations many times, and frequently operate the lifting and power output engagement and disconnection separately, which increases the driver's labor intensity. When the unit is working at the end of the field, the driver also needs to operate the lifting control handle to lift the implement. If the power of the power output shaft is not cut off during the lifting process, or the lifting height is too high, the angle of the power output transmission shaft will be too large, which will cause damage to the tractor power output, universal joint or implement. Therefore, it is necessary to develop a tractor that can realize the linkage control of lifting action and power output to reduce the driver's labor intensity and better protect the unit and reduce failures. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a tractor capable of realizing linkage control of lifting action and power output in view of the above-mentioned shortcomings.

[0004] The present invention is achieved through the following technical solutions:

[0005] A tractor comprises a front counterweight assembly, a front drive wheel assembly, a power assembly, a hydraulic system assembly, a clutch assembly, a steering system assembly, a gearbox assembly, a manipulation feedback system assembly, an electrical system assembly, a power output assembly, a lifting suspension system assembly, a front drive axle assembly, a rear drive wheel assembly and a brake system assembly; the front counterweight assembly is connected to a bracket of the front drive wheel assembly, and the front drive wheel assembly is connected to the front drive axle assembly; the engine assembly of the power assembly is respectively connected to the hydraulic system assembly, the gearbox assembly and the power output assembly, the clutch assembly is connected to control the power output of the gearbox assembly and the power output assembly, the hydraulic system assembly is connected to the lifting suspension system assembly, and the electrical system assembly is connected to the engine assembly; the steering system assembly is connected to the front drive axle assembly, and the brake system assembly is connected to the rear drive wheel assembly; the manipulation device of the hydraulic system assembly controls the clutch assembly, the power output assembly and the lifting suspension system assembly through the manipulation feedback system assembly.

[0006] Furthermore, the tractor also includes a hood assembly, a floor assembly and a fuel tank assembly; the fuel tank assembly is located in the front half of the tractor, the hood assembly is fixed to the periphery of the engine assembly, and the floor assembly is installed above the gearbox assembly.

[0007] Furthermore, in the tractor, the power assembly includes a cooling system assembly, the engine assembly, an exhaust system assembly and an intake system assembly; the cooling system assembly, the exhaust system assembly and the intake system assembly are respectively connected to the engine assembly.

[0008] Furthermore, in the tractor, the hydraulic system assembly includes an operating device, a multi-way valve, a height limit feedback rod, a lifter, a lifting cylinder and the hydraulic pump; the operating device is connected to the lifter of the lifting suspension system assembly through the height limit feedback rod, and the operating device controls the flow direction of the hydraulic oil of the multi-way valve through a flexible shaft connection; the engine assembly is connected to the hydraulic pump, and the hydraulic pump is connected to the lifting cylinder through the multi-way valve.

[0009] Furthermore, in the tractor, the hydraulic system assembly also includes a hydraulic output connector and an oil filter; the multi-way valve provides a plurality of oil outlets, one of which is connected to the hydraulic output connector, and the hydraulic pump is connected to the multi-way valve via the oil filter.

[0010] Furthermore, in the tractor, the clutch assembly includes a double-acting clutch, a main clutch control and a secondary clutch control; the main clutch control controls the power input of the transmission assembly, and the secondary clutch control controls the power input of the power output assembly; the secondary clutch control connects the lifter of the lifting suspension system assembly.

[0011] Furthermore, in the tractor, the steering system assembly includes a steering gear, a steering oil pot and a steering pump; the engine assembly is connected to the steering pump, the steering pump is connected to the steering gear via the steering oil pot, and the steering gear is connected to the front drive axle assembly.

[0012] Furthermore, in the tractor, the transmission assembly is connected to the rear drive wheel assembly and the power output assembly, or / and the transmission assembly is connected to the front drive axle assembly.

[0013] Furthermore, in the tractor, the power output assembly includes a power output shaft, a speed change gear assembly and a speed change control; the speed change control controls the rotational speed of the power output shaft through the speed change gear assembly; when the speed change control is in a lower position, the power output shaft is at a low speed, when the speed change control is in a middle position, the power output shaft is in neutral and does not rotate, and when the speed change control is in an upper position, the power output shaft is at a high speed.

[0014] Furthermore, in the tractor, the brake system assembly includes a brake pedal, a connecting rod and a brake; the brake pedal controls the brake through the connecting rod, and the brake is connected to the rear drive wheel assembly.

[0015] The advantages and effects of the present invention are:

[0016] The operating device of the tractor provided by the present invention controls the clutch assembly, the power output assembly and the lifting suspension system assembly through the operating feedback system assembly, thereby realizing the linkage control of the lifting suspension assembly and the power output assembly, realizing the joint adjustment of lifting and power output, and realizing the disconnection and connection of power when different lifting heights are required for hooking different machines and implements, and has a simple structure, convenient adjustment and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram showing the structure of the tractor provided by the present invention is shown;

[0018] Figure 2 Show Figure 1 A top view of

[0019] Figure 3 A schematic structural diagram of a power assembly of a tractor provided by the present invention is shown;

[0020] Figure 4 A structural schematic diagram showing a hydraulic system assembly of a tractor provided by the present invention;

[0021] Figure 5 A schematic structural diagram of a tractor control feedback system assembly provided by the present invention is shown;

[0022] Figure 6 A structural schematic diagram showing a steering system assembly of a tractor provided by the present invention;

[0023] Figure 7 A schematic diagram showing the structure of the electrical system assembly of the tractor provided by the present invention;

[0024] Figure 8 A schematic structural diagram of a power output assembly of a tractor provided by the present invention is shown;

[0025] Fig. 9A structural schematic diagram showing a lifting and suspension system assembly of a tractor provided by the present invention;

[0026] Fig.10 A schematic structural diagram of a brake system assembly of a tractor provided by the present invention is shown;

[0027] Fig.11 A schematic diagram showing the hydraulic system and functions of the tractor provided by the present invention.

[0028] Explanation of reference numerals: front counterweight assembly (1), front drive wheel assembly (2), hood assembly (3), power assembly (4), cooling system assembly (4.1), engine assembly (4.2), exhaust system assembly (4.3), intake system assembly (4.4), hydraulic system assembly (5), operating device (5.1), multi-way valve (5.2), height limit feedback lever (5.3), hydraulic output joint (5.4), clutch operating device (5.5), lifting cylinder (5.6), oil filter (5.7), hydraulic pump (5.8), clutch assembly (6), double-acting clutch (6.1), main clutch operation (6.2), auxiliary clutch operation (6.3), steering system assembly (7), steering gear (7.1), steering oil pot (7.2), steering pump (7.3), gearbox assembly (8), floor assembly (9), operating Feedback system assembly (10), electrical system assembly (11), battery (11.1), headlamp assembly (11.2), ECU (11.3), control element (11.4), rear lamp assembly (11.5), power output assembly (12), power output shaft (12.1), speed gear assembly (12.2), speed shift control (12.3), lifting suspension system assembly (13), lifter (13.1), upper tie rod (13.2), lifting rod (13.3), lower tie rod (13.4), lower tie rod support (13.5), limit rod (13.6), limit rod support (13.7), front drive axle assembly (14), fuel tank assembly (15), rear drive wheel assembly (16), brake system assembly (17), dynamic pedal (17.1), connecting rod (17.2), brake (17.3). DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the implementation of the present invention clearer, the technical scheme in the embodiment of the present invention is described in more detail below in conjunction with the drawings in the embodiment of the present invention. The described embodiment is a part of the embodiment of the present invention, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present invention, and should not be understood as limitations on the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention. The embodiments of the present invention are described in detail below in conjunction with the drawings:

[0030] In the description of the present invention, it should be understood that, unless otherwise specified, "multiple" means two or more than two; the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0031] Dual-acting clutch: A clutch that can be engaged to separate the engine from the transmission and power output individually.

[0032] Feedback control mechanism: a set of mechanisms that realize the unit's self-feedback and self-operation actions.

[0033] Feedback link: often used for force transmission and support.

[0034] Flexible shaft: A shaft with very low rigidity, elasticity and free bending transmission, used to connect two shafts with different axes that are not in the same direction or have relative motion to transmit rotational motion and torque.

[0035] Figure 1 , 2The structural schematic diagram of the tractor provided by the present invention is shown. The tractor includes a front counterweight assembly 1, a front drive wheel assembly 2, a hood assembly 3, a power assembly 4, a hydraulic system assembly 5, a clutch assembly 6, a steering system assembly 7, a gearbox assembly 8, a floor assembly 9, a control feedback system assembly 10, an electrical system assembly 11, a power output assembly 12, a lifting suspension system assembly 13, a front drive axle assembly 14, a fuel tank assembly 15, a rear drive wheel assembly 16 and a brake system assembly 17. The front counterweight assembly 1 is connected to the front end of the bracket of the front drive wheel assembly 2 (the tractor head direction is the front), and is used to apply weight to the front end of the tractor to avoid the tractor rear lifting suspension system assembly 13 hooking agricultural implements to cause the tractor to tilt in front, and can ensure that the front drive wheel maintains a certain ground force to meet the steering performance of the tractor. The front drive wheel assembly 2 is connected to the front drive axle assembly 14, fixed in front of the engine assembly 4.2, and is used to support the front end of the tractor and realize the steering function of the tractor. The hood assembly 3 is fixed to the periphery of the engine assembly 4.2 to protect the cooling system assembly 4.1 and the engine assembly 4.2 of the power assembly 4, and is used to install the headlight assembly 11.2 of the electrical system assembly 11. The engine assembly 4.2 of the power assembly 4 is respectively connected to the hydraulic system assembly 5, the gearbox assembly 8 and the power output assembly 12 to supply energy thereto. The clutch assembly 6 is connected to control the power output of the gearbox assembly 8 and the power output assembly 12, and is used to transmit and cut off the power transmission of the engine assembly 4.2 to the gearbox assembly 8 and the power output assembly 12. The hydraulic system assembly 5 is connected to the lifting suspension system assembly 13 to realize the lifting action of the tractor and provide a hydraulic output interface. The electrical system assembly 11 is connected to the engine assembly 4.2 to provide power and start the engine assembly motor. The steering system assembly 7 is connected to the front drive axle assembly 14 to realize the steering of the tractor. The brake system assembly 17 is connected to the rear drive wheel assembly 16 to realize the braking of the tractor. The operating device 5.1 of the hydraulic system assembly 5 controls the clutch assembly 6, the power output assembly 12 and the lifting suspension system assembly 13 through the operating feedback system assembly 10, so as to realize the linkage control of the lifting height and the power output. The fuel tank assembly 15 is located at the lower part of the front half of the tractor, which is safe and convenient for refueling. The floor assembly 9 is installed above the gearbox assembly 8 to provide a riding space and an operating platform for the driver.

[0036] Figure 3The schematic diagram of the structure of the power assembly of the tractor provided by the present invention is shown. The power assembly 4 mainly provides power for the tractor, and includes a cooling system assembly 4.1, an engine assembly 4.2, an exhaust system assembly 4.3 and an intake system assembly 4.4. The cooling system assembly 4.1, the exhaust system assembly 4.3 and the intake system assembly 4.4 are respectively connected to the engine assembly 4.2. The cooling system assembly 4.1 is used to maintain the thermal balance of the engine assembly 4.2, the exhaust system assembly 4.3 is used to process the exhaust gas and noise of the engine assembly 4.2, and the intake system assembly 4.4 is used to filter the air entering the engine assembly 4.2.

[0037] Figure 4 The structural schematic diagram of the hydraulic system assembly of the tractor provided by the present invention is shown. The hydraulic system assembly 5 is used to realize the lifting action of the tractor and provide a hydraulic output interface, which includes an operating device 5.1, a multi-way valve 5.2, a height limit feedback rod 5.3, a hydraulic output joint 5.4, a clutch operating device 5.5, a lifting cylinder 5.6, an oil filter 5.7 and a hydraulic pump 5.8. The engine assembly 4.2 is connected to the hydraulic pump 5.8 to supply energy to the hydraulic system assembly 5, and the hydraulic pump 5.8 is connected to the lifting cylinder 5.6 through the multi-way valve 5.2. Specifically, the hydraulic pump 5.8 is connected to the oil inlet of the multi-way valve 5.2 through an oil outlet pipe. The multi-way valve 5.2 provides multiple oil outlets, one of which is connected to the oil inlet of the lifting cylinder 5.6 to provide hydraulic energy for the hydraulic system assembly 5. The oil outlet of the lifting cylinder 5.6 is connected to the multi-way valve 5.2 through a return oil pipe, and the oil returns to the oil tank through the return oil pipe to form an oil circulation loop. The remaining 1 to 3 oil outlets are connected to the hydraulic output connector 5.4 to provide hydraulic output for the agricultural implement. The operating device 5.1 is connected to the valve stem of the multi-way valve 5.2 through a flexible shaft to control the valve core of the multi-way valve 5.2, and then the flow direction of the hydraulic oil is controlled by pulling the operating device 5.1 to control the action of the lifting cylinder 5.6, so as to realize the lifting, lowering, strong pressure, and floating functions of the tractor lifting system. The operating device 5.1 is connected to the lifting cylinder 5.6 through a height limit feedback rod 5.3, and the height limit feedback rod 5.3 is used to set the lifting height. Specifically, a positioning bolt that can be slidably fixed is provided on the height limit feedback rod 5.3. One end of the height limit feedback rod 5.3 is connected to the operating device 5.1, and the other end passes through the connection hole on one side of the lifter 13.1 of the lifting suspension system assembly 13, and is limited by the positioning bolt. When the lifting cylinder 5.6 is lifted to the limit of the positioning bolt, the height limit feedback rod 5.3 stops the lifting action controlled by the operating device 5.1, and then controls the multi-way valve 5.2 to cut off the hydraulic oil supply to the lifting cylinder 5.6. A clutch operating device 5.5 is provided on the other side of the lifter 13.1. The hydraulic pump 5.8 is connected to the multi-way valve 5.2 through the oil filter 5.7 to filter impurities in the hydraulic system assembly 5 to protect the hydraulic components.

[0038] Figure 5The structural schematic diagram of the manipulation feedback system assembly of the tractor provided by the present invention is shown. The manipulation feedback system assembly 10 realizes the linkage between the manipulation control device 5.1, the clutch assembly 6, the power output assembly 12 and the lifting suspension system assembly 13. The clutch assembly 6 is used to transmit and cut off the power transmission of the engine assembly 4.2 to the gearbox assembly 8 and the power output assembly 12, and includes a double-acting clutch 6.1, a main clutch control 6.2 and a secondary clutch control 6.3. The main clutch control 6.2 controls the power input of the gearbox assembly 8, and the secondary clutch control 6.3 controls the power input of the power output assembly 12. Specifically, the height limit feedback rod 5.3 is connected to one side of the lifting arm of the lifter 13.1 of the lifting suspension system assembly 13, and the secondary clutch control device 5.5 is connected to the clutch control device 5.5 on the other side through a flexible shaft. The action of the lifting arm is linked with the height limit feedback rod 5.3 and the secondary clutch control device 5.5 to realize the engagement and separation of the power input of the power output assembly 12 controlled by the lifting action. When the operating device 5.1 is pulled and the lifting height is set, the height limit feedback rod 5.3 connected to one side of the lifting arm is fed back to stop the action. At the same time, the auxiliary clutch operating device 6.3 connected to the other side of the lifting arm disconnects the clutch power, thereby disconnecting the power input of the power output assembly 12, realizing the linkage control of the lifting height and the power output.

[0039] Figure 6 The structural schematic diagram of the steering system assembly of the tractor provided by the present invention is shown. The steering system assembly 7 includes a steering gear 7.1, a steering oil pot 7.2 and a steering pump 7.3. The engine assembly 4.2 is connected to the steering pump 7.3 to supply energy to the steering system assembly 7. The steering pump 7.3 is connected to the steering gear 7.1 via the steering oil pot 7.2, and the steering gear 7.1 is connected to the front drive axle assembly 14. The driver operates the steering gear 7.1 to control the steering cylinder on the front drive axle assembly 14 to realize the steering of the tractor.

[0040] The transmission assembly 8 transmits the power from the engine assembly 4.2, and the transmission assembly 8 is connected to the rear drive wheel assembly 16 and the power output assembly 12, and transmits the power to the rear drive wheel assembly 16 and the power output assembly 12 through gear shifting. At the same time, the transmission assembly 8 can also be connected to the front drive axle assembly 14, and transmits the power to the front drive axle assembly 14 through the transfer case to drive the front drive wheel assembly 2, thereby realizing four-wheel drive.

[0041] Figure 7The schematic diagram of the structure of the electrical system assembly of the tractor provided by the present invention is shown. The electrical system assembly 11 includes a battery 11.1, a headlight assembly 11.2, an electronic controller unit 11.3, a control element 11.4 and a rear light assembly 11.5. The battery 11.1 is connected to the engine assembly 4.2, the headlight assembly 11.2, the electronic controller unit 11.3, the control element 11.4 and the rear light assembly 11.5 to provide power to the tractor and start the engine assembly motor.

[0042] Figure 8 The schematic diagram of the structure of the power output assembly of the tractor provided by the present invention is shown. The power output assembly 12 includes a power output shaft 12.1, a speed change gear assembly 12.2 and a speed change control 12.3. The speed change control 12.3 controls the rotation speed of the power output shaft 12.1 through the speed change gear assembly 12.2. When the speed change control 12.3 is in the lower position, the power output shaft 12.1 is at a low speed. When the speed change control 12.3 is in the middle position, the power output shaft 12.1 is in neutral and does not rotate. When the speed change control 12.3 is in the upper position, the power output shaft 12.1 is at a high speed, and a dual-speed power output can be achieved.

[0043] Fig. 9 The structural schematic diagram of the lifting suspension system assembly of the tractor provided by the present invention is shown. The lifting suspension system assembly 13 includes a lifter 13.1, an upper pull rod 13.2, a lifting rod 13.3, a lower pull rod 13.4, a lower pull rod support 13.5, a limit rod 13.6, and a limit rod support 13.7, which are used to connect the tractor and the implement.

[0044] Fig.10 The structural schematic diagram of the brake system assembly of the tractor provided by the present invention is shown. The brake system assembly 17 includes a brake pedal 17.1, a connecting rod 17.2 and a brake 17.3. The brake pedal 17.1 is connected to the control brake 17.3 through the connecting rod 17.2, and the brake 17.3 is connected to the rear drive wheel assembly 16 to achieve braking of the tractor.

[0045] Fig.11 A schematic diagram showing the hydraulic system and functions of the tractor provided by the present invention.

[0046] When the secondary clutch control 6.3 is in the pulled-up position, no matter where the speed control 12.3 of the power output assembly 12 is, the power output shaft 12.1 has no power output, and the clutch control device 5.5 does not work on the double-acting clutch 6.1. The double-acting clutch 6.1 has no power transmission to the power output shaft 12.1. At this time, the operating control device 5.1 can lift and lower the machine without power output.

[0047] When the secondary clutch control 6.3 is in the lowered position and the speed control 12.3 of the power output assembly 12 is in the neutral position, the power output shaft 12.1 has no power output, and the clutch control device 5.5 acts on the double-acting clutch 6.1. However, since the gears are not engaged, the power output shaft 12.1 still has no power transmission. At this time, the operating control device 5.1 can lift and lower the machine without power output.

[0048] When the secondary clutch control 6.3 is in the lowered position and the speed control 12.3 of the power output assembly 12 is in the up / down position, the power output shaft 12.1 is connected to high / low speed. At this time, the lifting action and power output will start to work in conjunction: ① When the control device 5.1 is in the lower position, the machine is in the lowered (operating) position, and the double-acting clutch 6.1 is engaged to transmit power to the power output shaft 12.1, driving the machine to operate normally; ② When the driver operates the control device 5.1 to the upper position, the lifter 13.1 starts to lift the farm implement. When the lifting height reaches the height set by the height limit feedback lever 5.3, the lifting device 13.1 starts to lift the farm implement. ③ When the driver operates the operating device 5.1 to lower the implement, the auxiliary clutch control 6.3 will release the tension clutch engagement of the double-acting clutch 6.1, the power output assembly 12 will be reconnected to the power, and the power output shaft 12.1 will drive the implement to start working.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not used to limit the scope of implementation of the present invention. Any equivalent changes and modifications made within the protection scope of the present invention should be considered to fall within the protection scope of the present invention.

Claims

1. A tractor, characterized in that: The tractor comprises a front counterweight assembly (1), a front drive wheel assembly (2), a power assembly (4), a hydraulic system assembly (5), a clutch assembly (6), a steering system assembly (7), a gearbox assembly (8), a control feedback system assembly (10), an electrical system assembly (11), a power output assembly (12), a lifting suspension system assembly (13), a front drive axle assembly (14), a rear drive wheel assembly (16) and a brake system assembly (17); the front counterweight assembly (1) is connected to a bracket of the front drive wheel assembly (2), the front drive wheel assembly (2) is connected to the front drive axle assembly (14); the engine assembly (4.2) of the power assembly (4) is respectively connected to the hydraulic system assembly (5), the gearbox assembly (7), and the rear drive wheel assembly (16). The clutch assembly (6) is connected to control the power output of the gearbox assembly (8) and the power output assembly (12); the hydraulic system assembly (5) is connected to the lifting suspension system assembly (13); the electrical system assembly (11) is connected to the engine assembly (4.2); the steering system assembly (7) is connected to the front drive axle assembly (14); the brake system assembly (17) is connected to the rear drive wheel assembly (16); the operating device (5.1) of the hydraulic system assembly (5) controls the clutch assembly (6), the power output assembly (12) and the lifting suspension system assembly (13) in a linkage manner through the operating feedback system assembly (10); The hydraulic system assembly (5) comprises an operating device (5.1), a multi-way valve (5.2), a height limit feedback rod (5.3), a lifter (13.1), a lift cylinder (5.6) and a hydraulic pump (5.8); the operating device (5.1) is connected to the lifter (13.1) of the lift suspension system assembly (13) via the height limit feedback rod (5.3), and the operating device (5.1) controls the flow direction of hydraulic oil of the multi-way valve (5.2) via a flexible shaft connection; the engine assembly (4.2) is connected to the hydraulic pump (5.8), and the hydraulic pump (5.8) is connected to the lift cylinder (5.6) via the multi-way valve (5.2); The clutch assembly (6) is used to transmit and cut off the power transmission from the engine assembly (4.2) to the gearbox assembly (8) and the power output assembly (12), and comprises a double-acting clutch (6.1), a main clutch control (6.2) and a secondary clutch control (6.3); the main clutch control (6.2) controls the power input of the gearbox assembly (8), and the secondary clutch control (6.3) controls the power input of the power output assembly (12); The height limit feedback rod (5.3) is connected to one side of the lifting arm of the lifter (13.1) of the lifting suspension system assembly (13), and the auxiliary clutch control (6.3) is connected to the other side of the lifting arm via a flexible shaft. The movement of the lifting arm is linked with the height limit feedback rod (5.3) and the auxiliary clutch control (6.3), so as to realize the lifting action to control the engagement and disengagement of the power input of the power output assembly (12); When the operating device (5.1) is pulled and the lifting reaches the set lifting height, the height limit feedback lever (5.3) connected to one side of the lifting arm provides feedback to stop the action, and at the same time, the secondary clutch operating device (6.3) connected to the other side of the lifting arm disconnects the clutch power, thereby disconnecting the power input of the power output assembly (12), thereby achieving linkage control of the lifting height and the power output; The brake system assembly (17) comprises a brake pedal (17.1), a connecting rod (17.2) and a brake (17.3); the brake pedal (17.1) is connected to control the brake (17.3) via the connecting rod (17.2), and the brake (17.3) is connected to the rear drive wheel assembly (16).

2. A tractor according to claim 1, characterized in that: The tractor further comprises a hood assembly (3), a floor assembly (9) and a fuel tank assembly (15); the fuel tank assembly (15) is located at the front half of the tractor, the hood assembly (3) is fixed to the periphery of the engine assembly (4.2), and the floor assembly (9) is installed above the gearbox assembly (8).

3. A tractor according to claim 1 or 2, characterized in that: The power assembly (4) comprises a cooling system assembly (4.1), the engine assembly (4.2), an exhaust system assembly (4.3) and an intake system assembly (4.4); the cooling system assembly (4.1), the exhaust system assembly (4.3) and the intake system assembly (4.4) are respectively connected to the engine assembly (4.2).

4. A tractor according to claim 1, characterized in that: The hydraulic system assembly (5) further comprises a hydraulic output connector (5.4) and an oil filter (5.7); the multi-way valve (5.2) provides a plurality of oil outlets, one of the oil outlets being connected to the hydraulic output connector (5.4); and the hydraulic pump (5.8) is connected to the multi-way valve (5.2) via the oil filter (5.7).

5. A tractor according to claim 1 or 2, characterized in that: The clutch assembly (6) comprises a double-acting clutch (6.1), a main clutch control (6.2) and a secondary clutch control (6.3); the main clutch control (6.2) controls the power input of the gearbox assembly (8), and the secondary clutch control (6.3) controls the power input of the power output assembly (12); the secondary clutch control (6.3) is connected to the lifter (13.1) of the lifting suspension system assembly (13).

6. A tractor according to claim 1 or 2, characterized in that: The steering system assembly (7) comprises a steering gear (7.1), a steering oil pot (7.2) and a steering pump (7.3); the engine assembly (4.2) is connected to the steering pump (7.3), the steering pump (7.3) is connected to the steering gear (7.1) via the steering oil pot (7.2), and the steering gear (7.1) is connected to the front drive axle assembly (14).

7. A tractor according to claim 1 or 2, characterized in that: The gearbox assembly (8) is connected to the rear drive wheel assembly (16) and the power output assembly (12), or / and the gearbox assembly (8) is connected to the front drive axle assembly (14).

8. A tractor according to claim 1 or 2, characterized in that: The power output assembly (12) comprises a power output shaft (12.1), a speed change gear assembly (12.2) and a speed change control (12.3); the speed change control (12.3) controls the rotation speed of the power output shaft (12.1) through the speed change gear assembly (12.2); when the speed change control (12.3) is in a lower position, the power output shaft (12.1) is at a low speed; when the speed change control (12.3) is in a middle position, the power output shaft (12.1) is in a neutral position and does not rotate; when the speed change control (12.3) is in an upper position, the power output shaft (12.1) is at a high speed.

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