Wheeled tractor

Abstract

The invention relates to the technical field of agricultural mechanical equipment, in particular to a wheeled tractor which structurally comprises a transmission system, and a gearbox assembly is arranged in the transmission system. The power assembly is connected to the front part of the gearbox assembly; the covering part is mounted at the upper parts of the transmission system and the power assembly; the hydraulic system and the working device are installed on the upper portion of the transmission system and the upper portion of the power assembly, and the hydraulic system is located on the lower portion of the covering part. The wheeled tractor can meet the multifunctional operation requirements of rotary tillage, snow pushing, forage grass loading, ploughing, sowing, transportation and the like.

Description

Technical Field

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

[0002] At present, the degree of mechanization in agricultural farming, material handling, engineering assistance and other application scenarios is relatively low. With the development of crop planting and animal husbandry, the demand for power machinery has also increased year by year. Moreover, with the increase in operations such as rotary tillage, snow pushing, grass loading, plowing, sowing, and transportation, the power of tractors required for medium-horsepower multi-functional operations has also shown an upward trend.

[0003] However, in current multifunctional operations, traditional medium-horsepower tractors have large dimensions, scattered control arrangements, and poor structural layout, making it difficult to meet the needs of current multifunctional operations. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a wheeled tractor to solve the problem that the existing medium-horsepower wheeled tractors have poor structural layout and are difficult to meet the current needs of multi-functional operations of medium-horsepower wheeled tractors.

[0005] According to the present invention, a wheeled tractor is provided, wherein the wheeled tractor includes: a transmission system, wherein a transmission system is provided with a transmission assembly; a power assembly connected to the front of the transmission assembly; a cover installed on the upper part of the transmission system and the power assembly; and a hydraulic system and a working device installed on the upper part of the transmission system and the power assembly, and the hydraulic system is located below the cover.

[0006] Preferably, the covering member includes: a hood assembly, covering the top of the powertrain; a hood mounting bracket, connected to the rear end of the hood assembly through a hinge bracket, and the hood mounting bracket is installed on the powertrain; a cab frame, covering the upper part of the gearbox assembly, the front end of the cab frame is fixed to both sides of the gearbox assembly through a front bracket, and the rear end of the cab frame is fixed to the transmission system, and a floor is installed in the cab frame; an instrument panel, installed at the front of the floor; a steering wheel and steering column, fixed above the floor; a main seat assembly, fixed in the middle of the floor; and a secondary seat assembly, fixed above the floor, and the secondary seat assembly is located on the left side of the main seat assembly.

[0007] Preferably, the power assembly includes: a radiator fixed to the transmission system; a diesel engine assembly, the radiator being connected to the water inlet and outlet of the diesel engine assembly through pipes; an intake system assembly being connected to the front of the radiator through a fixed bracket; a water tank pad assembly being fixed to the upper part of the transmission system; a muffler assembly being fixed to the rear exhaust port of the diesel engine assembly; a flywheel housing being fixed to the rear of the diesel engine assembly, the flywheel housing being connected to the front part of the gearbox assembly, a flywheel being arranged in the flywheel housing, and the flywheel being fixed to the crankshaft of the diesel engine assembly; and a fuel tank and a bracket being installed on the left side of the gearbox assembly, the fuel tank and the bracket being located on the left side of the diesel engine assembly.

[0008] Preferably, the front end of the hood mounting bracket is mounted on the diesel engine assembly, and the rear end of the hood mounting bracket is mounted on the upper end of the flywheel housing.

[0009] Preferably, the transmission system includes: a bracket assembly, which is installed at the front end of the diesel engine assembly; a front drive axle assembly, which is installed at the lower part of the bracket assembly, and the left and right parts of the front drive axle assembly are both provided with wheel hubs, and the front drive axle assembly is provided with a steering cylinder; a front drive wheel assembly, which is installed on the wheel hub of the front drive axle assembly; a torsion buffer, which is located inside the gearbox assembly, and the torsion buffer is fixed to the flywheel; a power shift assembly, which is connected to the torsion buffer through a spline, and the power shift assembly is arranged inside the gearbox assembly; a main and auxiliary speed change and crawler gear assembly, which is connected to the power shift assembly through a spline; a rear central transmission assembly, which is connected to the main and auxiliary speed change and crawler gear assembly through gears; a rear axle housing, which is arranged at the The rear central transmission assembly is arranged inside the rear axle housing at the lower part of the cab frame; the transfer case assembly is installed at the lower part of the rear axle housing; the four-wheel drive transmission shaft assembly is connected to the transfer case assembly and the front drive axle assembly respectively through splines; the final drive assembly is connected to the rear axle housing, and the final drive assembly is provided with a left drive shaft and a right drive shaft; the left brake assembly is connected to the left side of the rear part of the rear axle housing, and the left brake assembly is connected to the left drive shaft through the spline inside the friction plate; the right brake assembly is connected to the right side of the rear part of the rear axle housing, and the right brake assembly is connected to the right drive shaft through the spline inside the friction plate; and the power output transmission assembly is connected to the torsional buffer through a spline shaft.

[0010] Preferably, the transmission system also includes: a clutch operating assembly, which is arranged on the left front part of the floor; a brake pedal assembly, which is arranged on the right front part of the floor, and the brake pedal assembly is connected to the left brake assembly and the right brake assembly through a brake pump and a brake line; a main speed shift handle, which is arranged on the right side of the floor, and the main speed shift handle is connected to the right side of the transmission assembly through a flexible shaft; an auxiliary speed shift handle, which is arranged on the right side of the floor, and the auxiliary speed shift handle is connected to the left side of the transmission assembly through a flexible shaft; a shuttle gear operating handle, which is arranged on the left side of the steering wheel and steering column; a PTO shift operating handle, which is arranged on the left side of the rear part of the cab frame; and a crawler gear operating lever, which is arranged on the left side of the rear part of the cab frame.

[0011] Preferably, the radiator is fixed to the bracket assembly by bolts, and the water tank pad assembly is fixed to the upper part of the bracket assembly by bolts.

[0012] Preferably, the rear end of the cab frame is connected to the upper part of the housing of the final drive assembly through bolts and a rear connecting device.

[0013] Preferably, the hydraulic system and working device share oil with the transmission assembly, and the hydraulic system and working device include: a hydraulic control module, provided with a main control valve, the main control valve is arranged on the right side of the rear axle housing; a clutch group, connected to the main control valve through a pipeline, the clutch group includes a PTO clutch, a four-wheel drive clutch and a differential lock; a steering gear, the oil return port of the steering gear is connected to the main control valve through a pipeline, the oil inlet of the steering gear is connected to the main control valve through a pipeline and an oil filter, and the oil outlet of the steering gear is connected to the steering cylinder through a pipeline; and an oil radiator, arranged in the radiator, the oil radiator is connected to the main control valve through a pipeline, the oil radiator adopts an air suction structure, the oil radiator is located at the lower part of the radiator, and a safety valve is provided in the oil radiator. The oil cooled by the oil radiator returns to the main control valve through a pipeline to cool the PTO clutch and the transmission assembly.

[0014] and a tube connecting the dischar e side of the pump with a plug in the forward end of the crank case, said tube having a check valve in it at the pump end, and said former tube which connects the pump to the oil drain plug, and said former tube which connects the pump to the oil drain plug, and said former tube which connects the pump to the oil drain plug, and said former tube which connects the pump to the oil drain plug, The cam is connected to the rear axle of the vehicle frame by means of a pin, and the cam is connected to the rear axle of the vehicle frame by means of a pin.

[0015] The wheeled tractor of the present invention features a rational structural layout. Through the compact arrangement of the transmission system, powertrain, covering components, hydraulic system, and working devices, the wheeled tractor optimizes space, ensuring smooth operation and high operating efficiency while reducing overall dimensions. Furthermore, the control layout is tailored to ergonomic requirements, ensuring comfortable operation and flexible steering. The wheeled tractor can be equipped with a variety of implements to meet multi-functional operations such as rotary tillage, snow pushing, forage loading, plowing, seeding, and transportation.

[0016] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 is a schematic diagram of a wheeled tractor according to the present invention.

[0019] Figure 2 FIG. 1 is a schematic diagram of the wheeled tractor according to the present invention from another angle.

[0020] Figure 3 is a schematic diagram of a hood of a wheeled tractor according to the present invention.

[0021] Figure 4 is a schematic diagram of a powertrain of a wheeled tractor according to the present invention.

[0022] Figure 5 is a schematic diagram of a transmission system of a wheeled tractor according to the present invention.

[0023] Figure 6 Schematic diagram of the hydraulic system and working device of the wheeled tractor according to the present invention.

[0024] Reference numerals: 1-hood assembly; 11-instrument panel; 12-upper tie rod; 15-fuel tank and bracket; 17-traction device assembly; 2-front drive wheel assembly; 20-brake pedal assembly; 22-front drive axle assembly; 25-main speed shift handle; 26-hydraulic output control handle; 27-auxiliary speed shift handle; 34-shuttle gear control handle; 35-PTO shift control handle; 36-creeper gear control lever; 44-trailer assembly; 45-clutch control assembly; 47-hood mounting bracket; 50-bracket assembly; 52-intake system assembly; 53-radiator; 55 - Radiator gasket assembly; 56- Muffler assembly; 57- Diesel engine assembly; 59- Four-wheel drive drive shaft assembly; 6- Cab frame; 60- Torsion damper; 61- Transmission assembly; 63- Rear axle housing; 65- Right brake assembly; 66- Left brake assembly; 67- Final drive assembly; 69- Steering gear; 7- Steering wheel and steering column; 71- Lifter; 72- Multi-way valve oil pipe and operating assembly; 73- Hydraulic control module; 74- Oil pump, oil pipe and oil filter assembly; 77- Power take-off transmission assembly; 78- Lower tie rod; 8- Auxiliary seat assembly; 9- Main seat assembly. DETAILED DESCRIPTION

[0025] The following detailed description is provided to help the reader gain a comprehensive understanding of the methods, devices, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be apparent upon understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein. Rather, except for operations that must occur in a particular order, changes may be made that will be apparent upon understanding the disclosure of this application. Furthermore, descriptions of features known in the art may be omitted for clarity and brevity.

[0026] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many possible ways to implement the methods, devices, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0027] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being “on,” “connected to,” “coupled to,” “over,” or “overlaying” another element, it may be directly “on,” “connected to,” “coupled to,” “over,” or “overlaying” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on,” “directly connected to,” “directly coupled to,” “directly over,” or “directly covering” another element, there may be no other elements present between them.

[0028] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0029] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are used only to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Thus, a first member, component, region, layer, or portion in the examples described herein may also be referred to as a second member, component, region, layer, or portion without departing from the teachings of the examples.

[0030] For ease of description, spatially relative terms such as "above," "upper," "below," and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatially relative terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element would subsequently be located "below" or "lower" relative to the other element. Thus, the term "above" encompasses both the orientations of "above" and "below," depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative terms used herein will be interpreted accordingly.

[0031] The terms used herein are intended to describe various examples only and are not intended to limit the examples. Unless the context clearly indicates otherwise, the singular form is intended to include the plural form. The terms "include," "comprising," and "having" list the presence of stated features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0032] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the drawings may occur. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include changes in shapes that occur during manufacturing.

[0033] The features of the examples described herein can be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0034] The present invention provides a wheeled tractor, such as Figures 1 to 6 As shown, the wheeled tractor includes a transmission system, a power assembly, a cover, a hydraulic system and a working device.

[0035] In the following description, reference will be made to Figures 1 to 6 The specific structure of the above components of the wheeled tractor and the connection relationship of the above components are described in detail.

[0036] like Figures 1 to 6As shown, in an embodiment, the transmission system may include a transmission assembly 61. The powertrain may be bolted to the front of the transmission assembly 61 (for ease of description, in the embodiment, the terms "front" and "rear" may refer to the direction toward the front of the wheeled tractor and the direction toward the rear of the wheeled tractor; and the terms "left" and "right" may refer to the left and right sides of the operator while driving the wheeled tractor). A cover may be installed above the transmission system and powertrain. The hydraulic system and working device may be installed above the transmission system and powertrain, with the hydraulic system located below the cover. This compact arrangement of the transmission system, powertrain, cover, hydraulic system, and working device optimizes the space of the wheeled tractor, ensuring smooth operation and high operating efficiency while reducing the overall size of the wheeled tractor. Preferably, the wheeled tractor may also include an electrical system. Parts of the electrical system, hydraulic system, and working device may be secured to the left and right sides of the powertrain and transmission system using bolts and pipe clamps.

[0037] Preferably, Figures 1 to 3 and Figure 5 As shown, in this embodiment, the covering may include a hood assembly 1, a hood mounting bracket 47, a cab frame 6, an instrument panel 11, a steering wheel and steering column 7, a main seat assembly 9, and a passenger seat assembly 8. The hood assembly 1 may overlie the powertrain. The hood mounting bracket 47 may be connected to the rear end of the hood assembly 1 via a hinge bracket and bolts. The hood mounting bracket 47 may be mounted to the powertrain. The cab frame 6 may be an integrally formed structure. It may overlie the transmission assembly 61 and the rear axle housing 63. The front end of the cab frame 6 may be secured to both sides (left and right) of the transmission assembly 61 via bolts and front brackets. The rear end of the cab frame 6 may be bolted to the drivetrain, and a floor panel may be installed within the cab frame 6. The instrument panel 11 may be bolted to the front of the floor panel. The steering wheel and steering column 7 may be bolted to the top of the floor panel. The main seat assembly 9 may be bolted to the center of the floor panel. Auxiliary seat assembly 8 can be fixed to the floor by bolts, and described auxiliary seat assembly 8 can be located at the left side portion of main seat assembly 9. Specifically, auxiliary seat assembly 8 can be located above the left rear wheel cover of described wheel tractor.

[0038] Preferably, Figures 1 to 4As shown, in this embodiment, the powertrain may include a radiator 53, a diesel engine assembly 57, an air intake system assembly 52, a radiator plate assembly 55, a muffler assembly 56, a flywheel housing, and a fuel tank and bracket 15. The radiator 53 may be bolted to the powertrain. Pipes connect the radiator 53 to the water inlet and outlet of the diesel engine assembly 57, allowing coolant in the radiator 53 to flow into the water channels within the diesel engine assembly 57. The air intake system assembly 52 may be connected to the front of the radiator 53 via bolts and a fixing bracket. The radiator plate assembly 55 may be bolted to the upper portion of the powertrain. The muffler assembly 56 may be bolted to the rear exhaust port of the diesel engine assembly 57. The flywheel housing is bolted to the rear of the diesel engine assembly 57 and is also bolted to the front of the transmission assembly 61. A flywheel is housed within the flywheel housing, which is bolted to the crankshaft of the diesel engine assembly 57. The fuel tank and the bracket 15 are mounted on the left side of the transmission assembly 61 by bolts, and the fuel tank and the bracket 15 are located on the left side of the diesel engine assembly 57 .

[0039] Further, preferably, Figures 1 to 5 As shown, in an embodiment, the front end of the hood mounting bracket 47 can be fixed to the diesel engine assembly 57 by bolts, and the rear end of the hood mounting bracket 47 can be fixed to the upper end of the flywheel housing by bolts.

[0040] In addition, preferably, Figure 1 、 Figure 2 and Figure 5As shown, in this embodiment, the transmission system may include a carrier assembly 50, a front drive axle assembly 22, a front drive wheel assembly 2, a torsion damper 60, a power shift assembly, a main and auxiliary transmission and crawler gear assembly, a rear center drive assembly, a rear axle housing 63, a transfer case assembly, a four-wheel drive drive shaft assembly 59, a final drive assembly 67, a left brake assembly 66, a right brake assembly 65, and a power output transmission assembly 77. The carrier assembly 50 may be bolted to the front end of the diesel engine assembly 57. The front drive axle assembly 22 may be bolted to the lower portion of the carrier assembly 50. Wheel hubs are provided on both the left and right sides of the front drive axle assembly 22. The front drive wheel assembly 2 may be mounted on the left and right wheel hubs of the front drive axle assembly 22, respectively. The front drive axle assembly 22 may also be provided with a steering cylinder. The front end of the transmission assembly 61 may be bolted to the flywheel housing at the rear of the diesel engine assembly 57. A torsional damper 60 can be installed inside the transmission assembly 61 and bolted to the flywheel. The power shift assembly can be connected to the torsional damper 60 via a spline. The power shift assembly can also be installed inside the transmission assembly 61. The main and auxiliary transmission and crawler gear assemblies can be connected to the power shift assembly via splines, while the rear center drive assembly can be connected to the main and auxiliary transmission and crawler gear assemblies via gears. The rear axle housing 63 is installed below the cab frame 6. The rear center drive assembly can be installed inside the rear axle housing 63. The transfer case assembly can be bolted to the lower portion of the rear axle housing 63. The four-wheel drive shaft assembly 59 can be connected to the transfer case assembly and the front drive axle assembly 22 at both ends via splines and splined sleeves, respectively. The final drive assembly 67 can be bolted to the outside of the rear axle housing 63 and can include a left drive shaft and a right drive shaft. The left brake assembly 66 is bolted to the left side of the rear axle housing 63. The interior of the left brake assembly 66 is connected to the left drive shaft via splines within the friction plate. The right brake assembly 65 is bolted to the right side of the rear axle housing 63. The interior of the right brake assembly 65 is connected to the right drive shaft via splines within the friction plate. The power output transmission assembly 77 is connected to the torsion damper 60 via a splined shaft.

[0041] More preferably, Figures 1 to 5As shown, in this embodiment, the transmission system may also include a clutch operating assembly 45, a brake pedal assembly 20, a main shift handle 25, a secondary shift handle 27, a shuttle gear operating handle 34, a PTO shift operating handle 35, and a creeper gear operating lever 36. The clutch operating assembly 45 may be located on the left front portion of the floor within the cab frame 6 and may control a solenoid valve via an electronic clutch. The brake pedal assembly 20 (i.e., the left and right brake pedals) may be located on the right front portion of the floor. The brake pedal assembly 20 is connected to the left brake assembly 66 and the right brake assembly 65 via a brake pump and brake lines. The main shift handle 25 may be located on the right side of the floor of the cab frame 6 and may be connected to the right side of the transmission assembly 61 via a flexible shaft. Similarly, the secondary shift handle 27 may be located on the right side of the floor of the cab frame 6 and may be connected to the left side of the transmission assembly 61 via a flexible shaft. The shuttle gear operating handle 34 can be located on the left side of the steering wheel and steering column 7. The PTO shift operating handle 35 and the crawler gear operating lever 36 can be located on the left side of the rear portion of the cab frame 6. The four-wheel drive transmission shaft assembly 59 and the power take-off transmission assembly 77 are controlled and transmitted via an electrical system and a hydraulic system.

[0042] Further, preferably, Figures 1 to 5 As shown, in the embodiment, the radiator 53 can be fixed to the bracket assembly 50 by bolts, and the water tank pad assembly 55 can be fixed to the upper part of the bracket assembly 50 by bolts. The rear end of the cab frame 6 can be connected to the upper part of the housing of the final drive assembly 67 by bolts and a rear connecting device.

[0043] Preferably, Figure 1 、 Figure 2 、 Figure 5 and Figure 6As shown, in this embodiment, the hydraulic system and working device can share oil with the transmission assembly 61. The hydraulic system and working device may include a hydraulic control module 73, a clutch pack, a steering gear 69, and an oil radiator. The hydraulic control module 73 is equipped with a main control valve, which may be located on the right side of the rear axle housing 63. The clutch pack may be connected to the main control valve via a pipeline. The clutch pack may include a PTO clutch, a four-wheel drive clutch, and a differential lock. The oil return port of the steering gear 69 may be connected to the main control valve via a pipeline. The oil inlet of the steering gear 69 may be connected to the main control valve via a pipeline and a high-pressure oil filter. The oil outlet of the steering gear 69 may be connected to the steering cylinder of the front drive axle assembly 22 via a pipeline. The oil after passing through the main control valve may be circulated through a pipeline to the oil radiator, which is located within the radiator 53. Specifically, the radiator 53 may be equipped with a water radiator, an intercooler, and an oil radiator, sequentially arranged from top to bottom, with the oil radiator located at the bottom. The oil radiator may utilize an air-suction structure for heat dissipation and may be equipped with a safety valve. When the pressure exceeds the set pressure of the safety valve, the oil bypasses the safety valve to the oil radiator's outlet. The oil cooled by the oil radiator then returns to the main control valve through a pipeline. The cooled oil is used to cool components such as the PTO clutch and the drive shaft within the transmission assembly 61.

[0044] More preferably, Figure 1 、 Figure 2 、 Figure 5 and Figure 6As shown, in an embodiment, the hydraulic system and working device may further include an oil pump, oil pipe, and oil filter assembly 74, a steering gear oil inlet pipe, an upper tie rod 12, a hydraulic multi-way valve assembly, a hydraulic output control handle 26, a lifter 71, a hydraulic output port, a lift cylinder, a lift arm, a lift rod, a lower tie rod 78, a towing bracket, a limit support, a towing device assembly 17, and a limit rod. The oil pump, oil pipe, and oil filter assembly 74 may include a duplex pump and a lubrication pump. One end of the duplex pump's oil inlet pipe may be connected to the duplex pump, and the other end of the duplex pump's oil inlet pipe may be connected to the rear axle housing 63 via the main control valve. The lubrication pump may be splined to the PTO clutch housing. One end of the steering gear's oil inlet pipe may be connected to the main control valve via a high-pressure oil filter, and the other end of the steering gear's oil inlet pipe may be connected to the oil inlet of the steering gear 69. The lower portion of the upper tie rod 12 can be mounted to the upper portion of the upper tie rod support via a pin. A tie rod hook support is bolted to the upper tie rod support, and a tie rod hook is mounted on the upper tie rod hook support. The upper portion of the upper tie rod 12 can be limited by the upper tie rod hook. The multi-way valve oil pipe and control assembly 72 includes a hydraulic multi-way valve assembly, which is connected to the oil outlet of the main control valve via a pipe. The hydraulic multi-way valve assembly can be mounted to the upper portion of the upper tie rod support via a bracket. The hydraulic output control handle 26 can be mounted on the right fender on the floor. The hydraulic output control handle 26 can be connected to the hydraulic multi-way valve assembly via a push-pull flexible shaft. The lifter 71 can be mounted to the lifting lug at the rear of the rear axle housing 63 via a limit pin. The lifter 71 can be controlled by the electrical and hydraulic systems. The hydraulic output port is provided on the hydraulic multi-way valve assembly. The lower portion of the lift cylinder can be mounted to the rear end of the rear axle housing 63 via a pin, while the upper portion of the lift cylinder can be fixed to the lift arm via a pin. The upper portion of the lift rod can be connected to the ball bearing of the lift arm, while the lower portion of the lift rod can be fixed to the lower link 78 via a pin. The front ball bearing of the lower link 78 can be hinged to the rear end of the rear axle housing 63 via a pin. The towing device assembly 44 can include a towing bracket, which can be bolted to the rear end of the rear axle housing 63. A limit support can be mounted on both sides of the lower portion of the final drive assembly 67. The towing device assembly 17 can include a towing fork and a towing fork locking pin. The towing fork can be fixed to the interior of the towing bracket via a pin, and the towing fork locking pin can be hinged to the towing fork via a cotter pin. The front end of the limit rod can be fixed to the limit rod support via a pin.

[0045] During use, the wheeled tractor boasts a rational structural layout. The compact arrangement of the transmission system, powertrain, covering components, hydraulic system, and working devices optimizes the wheeled tractor's space, ensuring smooth operation and high operating efficiency while reducing its overall structural dimensions. The control layout is tailored to tractor ergonomics, ensuring comfortable operation and flexible steering. The wheeled tractor's compact gearbox and drive unit optimize its internal space, increasing torque transmission while reducing structural dimensions. It also boasts a rational speed design and high operating efficiency. Furthermore, the wheeled tractor can be equipped with a variety of implements, thereby meeting the needs of multi-functional operations such as rotary tillage, snow pushing, forage loading, plowing, sowing, and transportation.

[0046] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The scope of protection of the present application is not limited thereto. Although the present application has been described in detail with reference to the above-mentioned embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-mentioned embodiments within the technical scope disclosed in the present application, or perform equivalent replacements for some of the technical features thereof. These modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A wheeled tractor, characterized in that: The wheeled tractor comprises: A transmission system, wherein a gearbox assembly is provided in the transmission system; a powertrain connected to the front of the transmission assembly; a cover mounted on the transmission system and the powertrain; and The hydraulic system and the working device are installed on the upper part of the transmission system and the power assembly, and the hydraulic system is located at the lower part of the cover.

2. The wheeled tractor according to claim 1, characterized in that: The cover comprises: a hood assembly, covering the power assembly; a hood mounting bracket connected to the rear end of the hood assembly via a hinge bracket, the hood mounting bracket being mounted on the power assembly; A cab frame, covering the upper part of the gearbox assembly, wherein the front end of the cab frame is fixed to both sides of the gearbox assembly through a front bracket, and the rear end of the cab frame is fixed to the transmission system, and a floor is installed in the cab frame; an instrument panel mounted on the front portion of the floor; a steering wheel and a steering column, fixed above the floor; a main seat assembly fixed to the middle portion of the floor; and The auxiliary seat assembly is fixed above the floor, and the auxiliary seat assembly is located on the left side of the main seat assembly.

3. The wheeled tractor according to claim 2, characterized in that: The powertrain includes: a radiator, fixed to the transmission system; A diesel engine assembly, wherein the radiator is connected to a water inlet and a water outlet of the diesel engine assembly through pipelines; an air intake system assembly connected to the front portion of the radiator via a fixing bracket; a water tank pad assembly, fixed to the upper portion of the transmission system; a muffler assembly, fixed at the rear exhaust port of the diesel engine assembly; a flywheel housing fixed to the rear of the diesel engine assembly, the flywheel housing being connected to the front of the transmission assembly, a flywheel being arranged in the flywheel housing, and the flywheel being fixed to the crankshaft of the diesel engine assembly; and The fuel tank and the bracket are installed on the left side of the transmission assembly, and the fuel tank and the bracket are located on the left side of the diesel engine assembly.

4. The wheeled tractor according to claim 3, characterized in that: The front end of the hood mounting bracket is mounted on the diesel engine assembly, and the rear end of the hood mounting bracket is mounted on the upper end of the flywheel housing.

5. The wheeled tractor according to claim 3, characterized in that: The transmission system comprises: a bracket assembly, mounted on the front end of the diesel engine assembly; A front drive axle assembly is mounted on the lower portion of the bracket assembly, with wheel hubs being provided on both the left and right sides of the front drive axle assembly, and a steering cylinder being provided on the front drive axle assembly; A front drive wheel assembly, mounted on the wheel hub of the front drive axle assembly; a torsional damper, located inside the gearbox assembly, the torsional damper being fixed to the flywheel; a power shift assembly connected to the torsion buffer via a spline, the power shift assembly being disposed inside the transmission assembly; The main and auxiliary speed change and crawler gear assembly are connected to the power shift assembly through splines; a rear central transmission assembly connected to the main and auxiliary speed change and crawler gear assemblies through gears; A rear axle housing is provided at the lower portion of the cab frame, and the rear central transmission assembly is provided inside the rear axle housing; a transfer case assembly, mounted on the lower portion of the rear axle housing; A four-wheel drive transmission shaft assembly, wherein the four-wheel drive transmission shaft assembly is connected to the transfer case assembly and the front drive axle assembly respectively through splines; a final drive assembly connected to the rear axle housing, the final drive assembly being provided with a left drive shaft and a right drive shaft; A left brake assembly is connected to the left side of the rear portion of the rear axle housing, and the left brake assembly is connected to the left drive shaft via splines within the friction plate; a right brake assembly connected to the right side of the rear portion of the rear axle housing, the right brake assembly being connected to the right drive shaft via splines within a friction plate; and The power output transmission assembly is connected to the torsion buffer through a spline shaft.

6. The wheeled tractor according to claim 5, characterized in that: The transmission system further comprises: a clutch operating assembly, disposed on the left front portion of the floor; a brake pedal assembly, disposed at the right front portion of the floor, the brake pedal assembly being connected to the left brake assembly and the right brake assembly via a brake pump and a brake line; A main speed shift handle is provided on the right side of the floor and is connected to the right side of the gearbox assembly via a flexible shaft; A secondary speed shift handle is arranged on the right side of the floor, and the secondary speed shift handle is connected to the left side of the gearbox assembly through a flexible shaft; A shuttle gear operating handle is arranged on the left side of the steering wheel and steering column; A PTO shift control handle is provided on the left side of the rear portion of the cab frame; and A creeper gear operating lever is arranged on the left side of the rear portion of the cab frame.

7. The wheeled tractor according to claim 5, characterized in that: The radiator is fixed to the bracket assembly by bolts, and the water tank pad assembly is fixed to the upper part of the bracket assembly by bolts.

8. The wheeled tractor according to claim 5, characterized in that: The rear end of the cab frame is connected to the upper part of the housing of the final transmission assembly through bolts and a rear connecting device.

9. The wheeled tractor according to claim 6, wherein: The hydraulic system and working device share oil with the gearbox assembly, and the hydraulic system and working device include: A hydraulic control module is provided with a main control valve, wherein the main control valve is arranged on the right side of the rear axle housing; A clutch group is connected to the main control valve through a pipeline, and the clutch group includes a PTO clutch, a four-wheel drive clutch and a differential lock; A steering gear, wherein the oil return port of the steering gear is connected to the main control valve through a pipeline, the oil inlet of the steering gear is connected to the main control valve through a pipeline and an oil filter, and the oil outlet of the steering gear is connected to the steering cylinder through a pipeline; and An oil radiator is arranged in the radiator, and the oil radiator is connected to the main control valve through a pipeline. The oil radiator adopts an air suction structure and is located at the lower part of the radiator. A safety valve is provided in the oil radiator. The oil cooled by the oil radiator returns to the main control valve through a pipeline to cool the PTO clutch and the transmission assembly.

10. The wheeled tractor according to claim 9, characterized in that The hydraulic system and working device also include: An oil pump, oil pipe, and oil filter assembly, comprising a duplex pump and a lubrication pump, one end of an oil inlet pipe of the duplex pump being connected to the duplex pump, the other end of the oil inlet pipe of the duplex pump being connected to the rear axle housing via the main control valve, and the lubrication pump being connected to the housing of the PTO clutch via a spline; A steering gear oil inlet pipe, one end of which is connected to the main control valve via an oil filter, and the other end of which is connected to the oil inlet port of the steering gear; An upper rod, wherein the lower portion of the upper rod is mounted on an upper rod support via a pin shaft, an upper rod hook support is provided on the upper rod support, an upper rod hook is mounted on the upper rod hook support, and the upper portion of the upper rod is limited by the upper rod hook; A hydraulic multi-way valve assembly is connected to the oil outlet of the main control valve, and the hydraulic multi-way valve assembly is installed on the upper part of the upper tie rod support through a bracket; A hydraulic output operating handle is provided on the floor and is connected to the hydraulic multi-way valve assembly via a push-pull flexible shaft; A lifter is mounted on the rear portion of the rear axle housing via a limit pin; A hydraulic output port is provided on the hydraulic multi-way valve assembly; A lifting cylinder, the lower portion of which is mounted on the rear end of the rear axle housing via a pin; A lifting arm connected to the upper portion of the lifting cylinder via a pin; a lifting rod, the upper portion of which is connected to the ball bearing of the lifting arm; A lower tie rod, wherein a front ball bearing of the lower tie rod is hinged to the rear end of the rear axle housing by a pin, and a lower portion of the lifting rod is mounted on the lower tie rod by a pin; a trailer bracket, mounted on the rear portion of the rear axle housing via bolts; Limit supports, installed on both sides of the lower portion of the final drive assembly; and The traction device assembly comprises a traction fork and a traction fork locking pin. The traction fork is fixed inside the towing bracket through a pin shaft, and the traction fork locking pin is hinged to the traction fork through a cotter pin.

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