CN111645505B - High-horsepower wheeled tractor - Google Patents
High-horsepower wheeled tractor Download PDFInfo
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- CN111645505B CN111645505B CN202010565065.6A CN202010565065A CN111645505B CN 111645505 B CN111645505 B CN 111645505B CN 202010565065 A CN202010565065 A CN 202010565065A CN 111645505 B CN111645505 B CN 111645505B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 152
- 239000000725 suspension Substances 0.000 claims abstract description 50
- 230000009471 action Effects 0.000 claims abstract description 3
- 239000003921 oil Substances 0.000 claims description 439
- 239000010727 cylinder oil Substances 0.000 claims description 33
- 239000010720 hydraulic oil Substances 0.000 claims description 29
- 238000003466 welding Methods 0.000 claims description 27
- 230000009467 reduction Effects 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 239000002828 fuel tank Substances 0.000 claims description 18
- 238000005461 lubrication Methods 0.000 claims description 14
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 11
- 239000004202 carbamide Substances 0.000 claims description 11
- 239000010729 system oil Substances 0.000 claims description 10
- 239000012208 gear oil Substances 0.000 claims description 9
- 238000004378 air conditioning Methods 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000005034 decoration Methods 0.000 claims description 2
- 239000010687 lubricating oil Substances 0.000 claims description 2
- 230000007847 structural defect Effects 0.000 abstract 1
- 230000000712 assembly Effects 0.000 description 8
- 238000000429 assembly Methods 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 2
- 230000037072 sun protection Effects 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- 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
-
- 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
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
- B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
-
- 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
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
-
- 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
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D37/00—Stabilising vehicle bodies without controlling suspension arrangements
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
A high horsepower wheeled tractor belongs to the field of tractors, a front suspension device, a power system assembly, a transmission system assembly and a rear working device are sequentially connected and arranged from front to back according to the advancing direction, and the left end and the right end of a front axle and a rear axle of the transmission system assembly are connected with a traveling system assembly to form an assembly chassis assembly of the tractor; the steering system assembly and the hydraulic system assembly are connected and installed on the right side of the assembled chassis assembly from front to back according to the advancing direction, the steering system assembly is connected with the traveling system assembly to realize the turning action of the tractor, the hydraulic system assembly converts the mechanical energy transmitted by the transmission system assembly into hydraulic energy, and the rear working device and the front suspension device are controlled to act; the cover assembly covers over the mounting base assembly. The whole structure arrangement form can effectively solve the technical structural defects of the existing tractor products and meet the national latest emission standard requirements.
Description
Technical Field
The patent belongs to the tractor field, relates to a high horsepower wheeled tractor complete machine arrangement structure form.
Background
In recent years, along with the transition from a single mode to a duplex mode of a domestic farming mode, the market demand for a high-horsepower wheeled tractor capable of having a multifunctional working mode is increasing day by day, especially for a power shift tractor product with more than 260 horsepower, but the domestic 260 horsepower tractor product mainly adopts a technical scheme of an engine plus mechanical shift or a partial power shift (a transmission system is a main speed change power shift and a secondary speed change mechanical shift form), and the whole machine has a disordered arrangement structure and poor integration; the operating system has more handles and control buttons, but the space arrangement is scattered, the operation is complex, the efficiency is low, and the comfort is poor; meanwhile, the complex operation has increased requirements on monitoring items and data volume such as operation conditions, operation area plots, matched machine tool control and the like, and the control arrangement of the existing cab can not provide an efficient and accurate operation platform for the complex operation management. After the discharge is upgraded, the original whole machine layout structure form can not meet the legal requirements of the national latest discharge standard.
In view of the above state of the art, there is an urgent need for a complete machine arrangement that is fully functional, meets the requirements of use and regulations, and solves the above-mentioned problems.
Disclosure of Invention
In order to solve the technical problems, the invention provides the high-horsepower wheeled tractor, and the whole structure arrangement form can effectively solve the technical defects of the existing tractor products and meet the national latest emission standard requirements.
In order to achieve the technical purpose, the adopted technical scheme is as follows: a high horsepower wheel tractor comprises a power system assembly, a traveling system assembly, a transmission system assembly, a covering part assembly, a steering system assembly, a hydraulic system assembly, a rear working device and a front suspension device;
The front suspension device, the power system assembly, the transmission system assembly and the rear working device are sequentially connected and arranged from front to back according to the advancing direction, and are connected with the traveling system assembly through the left end and the right end of a front axle and a rear axle of the transmission system assembly to form an assembly chassis assembly of the tractor;
The steering system assembly and the hydraulic system assembly are connected and installed on the right side of the assembled chassis assembly from front to back according to the advancing direction, the steering system assembly is connected with the traveling system assembly to realize the turning action of the tractor, the hydraulic system assembly converts the mechanical energy transmitted by the transmission system assembly into hydraulic energy, and the rear working device and the front suspension device are controlled to act;
the cover assembly covers over the mounting base assembly.
The power system assembly comprises a national four-engine assembly, a post-treatment SCR assembly, a post-treatment DPF assembly, a radiating water tank assembly, an intercooler assembly, a radiating fan, an air filter assembly, a main fuel tank assembly, an auxiliary fuel tank assembly, a battery box assembly and a urea tank, wherein the rear end of the national four-engine assembly is connected with the front end of a gear box assembly with a speed reduction function in the transmission system assembly, and the front end of the national four-engine assembly is connected with the rear end of a profiling front bracket assembly in the walking system assembly; the radiator fan is arranged on a fan shaft of the national fourth engine assembly; the cooling water tank assembly and the intercooler assembly are sequentially arranged on the profiling front bracket assembly in the traveling system assembly, the cooling water tank assembly is connected with the water inlet and the water outlet of the national four-engine assembly through water inlet and outlet pipes, and the intercooler assembly is connected with the air inlet and the air outlet of the national four-engine assembly through an air inlet pipe and an air outlet pipe; the air filter assembly is fixed at the upper part of the national fourth engine assembly through a bracket and is connected with an air inlet of a supercharger of the national fourth engine assembly through an air outlet pipe; the aftertreatment SCR assembly and the aftertreatment DPF assembly are respectively arranged at the upper part of the national four-engine assembly through brackets and are arranged at the right side of the gear box assembly with the speed reduction function in the transmission system assembly; the main fuel tank assembly for supplying oil to the national four-engine assembly is arranged on the right side of the power shift gearbox assembly in the transmission system assembly through a bracket; the auxiliary fuel tank assembly for supplying oil to the national four-engine assembly is arranged on the right side of the gear box assembly with the speed reduction function in the transmission system assembly through a bracket; the battery box assembly for providing starting current for the national four-engine assembly and the urea tank for providing urea for the aftertreatment SCR assembly and the aftertreatment DPF assembly are sequentially fixed at the rear part of the auxiliary fuel oil box assembly from front to back through a bracket;
The transmission system assembly comprises a gear box assembly with a speed reduction function, a power shift gearbox assembly, a reinforced rear transmission box assembly, a final transmission assembly, a braking system assembly with hydraulic assistance and a front transmission shaft assembly;
The rear end of the gear box assembly with the speed reduction function is connected with the power shift gearbox assembly and the front end; the rear end of the power shift gearbox assembly is connected with the reinforced rear gearbox assembly; the final transmission assembly is arranged at two sides of the reinforced rear transmission box assembly through bolts; the brake system assembly with hydraulic power assistance is fixedly arranged on the covering assembly and is connected with an oil port on the transmission system assembly through an oil pipe; the front transmission shaft assembly is fastened between the rear end of the front drive axle assembly and the front end of the gear box assembly with the speed reduction function in the traveling system assembly;
The traveling system assembly comprises a front counterweight assembly, a profiling front bracket assembly, a front drive axle assembly, a front drive wheel assembly, a rear drive wheel assembly and a rear counterweight assembly; the front counterweight assembly is arranged at the front end of the simulated front bracket assembly; the front drive axle assembly is arranged at the lower part of the front bracket assembly in an imitation form; the front driving wheel assembly is arranged at the left end and the right end of the front driving axle assembly; the rear driving wheel assembly is arranged at the left end and the right end of the final transmission assembly in the transmission system assembly, and the rear counterweight assembly is arranged on a web plate of the rear driving wheel assembly.
The steering system assembly comprises a steering column mounting bracket assembly, a steering column assembly, a steering wheel assembly, a hydraulic steering gear assembly, a steering gear oil inlet pipe assembly, a first high-pressure oil filter, an oil filter oil inlet pipe assembly, a steering system oil return pipe assembly, a steering oil cylinder left oil inlet pipe assembly and a steering oil cylinder right oil inlet pipe assembly;
The steering wheel assembly is fixed at the top end of the steering column assembly; the steering column mounting bracket assembly is fixed on the covering component assembly; the steering column assembly is fixed on the steering column mounting bracket assembly through a bracket; the hydraulic steering gear assembly is fixed at the bottom of the steering column assembly; one end of the steering gear oil inlet pipe assembly 38 is connected with an oil inlet of the hydraulic steering gear assembly, and the other end of the steering gear oil inlet pipe assembly is connected with an oil outlet of the first high-pressure oil filter; the first high-pressure oil filter is fixed on the right side of a power shift gearbox assembly in the transmission system assembly through a bracket; one end of an oil inlet pipe assembly of the oil filter is connected with an oil inlet of the first high-pressure oil filter, and the other end of the oil inlet pipe assembly of the oil filter is connected with a steering oil outlet E1 on a power shifting gearbox assembly in a transmission system assembly; one end of the steering system oil return pipe assembly is connected with an oil return port of the hydraulic steering device assembly, and the other end of the steering system oil return pipe assembly is connected with a steering oil return port E2 of the power shift gearbox assembly in the transmission system assembly; one end of the left oil inlet pipe assembly of the steering oil cylinder and one end of the right oil inlet pipe assembly of the steering oil cylinder are respectively connected with left and right oil outlets of the hydraulic steering device assembly, and the other end of the left oil inlet pipe assembly of the steering oil cylinder and the right oil inlet pipe assembly of the steering oil cylinder are connected with left and right oil inlets E3 and E4 of the steering oil cylinder on the front drive axle assembly in the traveling system assembly.
The covering part assembly comprises a hood assembly, a hood right guard plate assembly, a hood left guard plate assembly, an instrument hood assembly, a cab welding assembly, a right operating table assembly, a seat assembly with a multifunctional operating handrail, a cab car ladder assembly, a cab inner decoration layer, a cab suspension assembly and an air conditioner and warm air system;
The hood assembly is respectively arranged at the upper parts of the gear box assembly with the speed reduction function in the power system assembly, the China four-engine assembly and the transmission system assembly through the front bracket and the rear bracket; the hood right guard plate assembly and the hood left guard plate assembly are respectively arranged at two sides of the national four-engine assembly, and form a uniform assembly relation with the hood right guard plate assembly and the hood left guard plate assembly when the front hood assembly falls down; the instrument cover assembly is fixedly arranged on the front wall plate of the cab welding assembly in the covering assembly; the right console assembly is arranged on the right side of the cab welding part assembly; the seat assembly with the multifunctional control armrest is arranged in the middle of the floor of the cab welding part assembly; the cab car ladder assembly is arranged on the left front side part of the floor of the cab welding piece assembly; the cab interior trim layer is arranged inside the cab welding part assembly; the cab suspension assembly is fixedly arranged on two sides of the gear box assembly and two sides of the rear part of the reinforced rear transmission box assembly; the air-conditioning warm air system is arranged at the bottom of the cab welding part assembly and is connected with an air-conditioning compressor and a water pump on the national four-engine assembly through pipelines; the cab weldment assembly is mounted on the cab suspension assembly.
The hydraulic system assembly comprises a hydraulic radiator, a radiator oil inlet pipe assembly, a radiator oil return pipe assembly, a variable plunger pump, a second high-pressure oil filter, an oil return filter, an oil suction filter, a hydraulic oil tank assembly, an electric control multi-way valve assembly, an oil storage pot, a variable plunger pump oil outlet pipe assembly, an oil return filter oil return pipe assembly, a lubricating oil return pipe assembly, a variable plunger pump oil outlet pipe assembly, a multi-way valve assembly second oil return pipe assembly, an external agricultural implement oil return pipe assembly, a variable plunger pump LS oil pipe assembly, an electric control lifting oil outlet pipe assembly, an electric control lifting oil return pipe assembly, a left lifting oil cylinder oil inlet pipe, a right lifting oil cylinder oil inlet pipe, a first three-way joint, a second three-way joint, a hydraulic output joint, an electric control multi-way valve first oil return pipe assembly and an electric control multi-way valve overflow pipe assembly;
The hydraulic radiator is arranged on the radiating water tank assembly and the intercooler assembly through the bracket; one end of the radiator oil inlet pipe assembly and one end of the radiator oil return pipe assembly are respectively connected with an oil inlet and an oil return port on the hydraulic radiator, and the other end of the radiator oil inlet pipe assembly and the other end of the radiator oil return pipe assembly are respectively connected with an oil port on the power shift gearbox assembly; the variable plunger pump is arranged at the flange of the right gear pump of the reinforced rear transmission case assembly; the second high-pressure oil filter is arranged at the lower part of the variable displacement pump; the return oil filter is arranged on the right side of the reinforced rear transmission case assembly through a bracket; the oil suction filter is arranged at the bottom flange of the hydraulic oil tank assembly; the hydraulic oil tank assembly is arranged at the right side part of the final transmission assembly through a bracket; the electric control multi-way valve assembly is arranged at the upper end of the rear part of the reinforced rear transmission case assembly through a bracket; the oil storage pot is arranged at the left side and the right side of the rear end of the middle final transmission assembly through a bracket; one end of the variable plunger pump oil outlet pipe assembly is connected with an oil outlet of the variable plunger pump, and the other end of the variable plunger pump oil outlet pipe assembly is connected with an oil inlet of the electric control multiway valve assembly; one end of the variable plunger pump suction pipe assembly is connected with an oil suction port of the variable plunger pump, and the other end of the variable plunger pump suction pipe assembly is connected with an oil outlet of the oil suction filter; one end of the return pipe assembly of the return oil filter is connected with the return port of the hydraulic oil tank assembly, and the other end of the return pipe assembly is connected with the outlet of the return oil filter; one end of a second oil return pipe assembly of the multi-way valve assembly is connected with an oil inlet of the oil return filter, and the other end of the second oil return pipe assembly is connected with an oil return port of the first three-way joint; one end of the lubrication oil return pipe assembly is connected with a lubrication oil port of the variable plunger pump, and the other end of the lubrication oil return pipe assembly is connected with a lubrication oil return port of the hydraulic oil tank assembly; one end of the variable plunger pump oil drain pipe assembly is connected with an oil drain port of the variable plunger pump oil drain pipe assembly, and the other end of the variable plunger pump oil drain pipe assembly is connected with an oil drain port of the hydraulic oil tank assembly 51; the number of the hydraulic output connectors is N, wherein N-1 hydraulic output oil inlet and return ports of the electric control multi-way valve assembly are respectively inserted and installed on one end of an external agricultural implement oil return pipe assembly; one end of the external agricultural implement oil return pipe assembly is connected with the Nth in the hydraulic output joint, and the other end of the external agricultural implement oil return pipe assembly is connected with the oil distributing port of the first three-way joint; one end of the variable plunger pump LS oil pipe assembly is connected with an LS oil port of the variable plunger pump, and the other end of the variable plunger pump LS oil pipe assembly is connected with an LS oil port of the electric control multiway valve assembly; one end of the electric control lifting oil outlet pipe assembly is connected with a lifting oil outlet of the electric control multiway valve assembly, and the other end of the electric control lifting oil outlet pipe assembly is connected with an oil inlet of the second three-way joint; one end of the electric control poppet valve oil return pipe assembly is connected with a poppet valve oil return port of the electric control multiway valve assembly, and the other end of the electric control poppet valve oil return pipe assembly is connected with a poppet valve oil return port of the hydraulic oil tank assembly; one end of the left lifting oil cylinder oil inlet pipe and one end of the right lifting oil cylinder oil inlet pipe are respectively connected with two oil return ports of the second three-way joint, and the other ends of the left lifting oil cylinder oil inlet pipe and the right lifting oil cylinder oil inlet pipe are respectively connected with oil inlets of the left lifting oil cylinder and the right lifting oil cylinder; one end of a first oil return pipe assembly of the multi-way valve assembly is connected with an oil inlet of the first three-way joint, and the other end of the first oil return pipe assembly is connected with an oil return port of the electric control multi-way valve assembly; one end of the overflow pipe assembly of the electric control multi-way valve is respectively connected with an overflow port on the electric control multi-way valve assembly, and the other end of the overflow pipe assembly of the electric control multi-way valve is respectively connected with an oil inlet on the oil storage kettle.
The rear working device comprises a left limiting plate assembly, a left lower pull rod assembly, a traction seat assembly, a left lifting oil cylinder assembly, an upper pull rod support welding assembly, a left lifting rod assembly, a right lifting oil cylinder assembly, an upper pull rod assembly, a right limiting plate assembly, a right lower pull rod assembly, a lower pull rod spring, a traction frame assembly, a traction rod, a rear traction rod, a first connecting pin, a locking pin shaft and a second connecting pin;
the upper pull rod support welding piece is arranged at the upper part of the rear end face of the transmission reinforced rear transmission case assembly; the upper pull rod assembly is hinged with the upper pull rod support welding piece; the right limiting plate assembly and the left limiting plate assembly are respectively arranged on the side plates of the traction frame assembly; the left lifting rod assembly and the right lifting rod assembly are respectively hinged with a left lifting arm, a right lifting arm and a left pull-down rod assembly and a right pull-down rod assembly on the reinforced rear transmission case assembly at two ends; the left lower pull rod assembly and the right lower pull rod assembly are respectively hinged on a bottom bent rod support of the reinforced rear transmission case assembly in the transmission system assembly C; the left lifting oil cylinder assembly and the right lifting oil cylinder assembly are hinged on left and right lifting arms and left and right oil cylinder supports of the reinforced rear transmission case assembly; two ends of the lower pull rod spring are respectively hung on the left lower pull rod assembly and the right lower pull rod assembly; the G1 surface of the traction seat assembly is arranged at the bottom of the reinforced rear transmission case assembly; the traction frame assembly is arranged on the rear end face of the reinforced rear transmission case assembly; one end of the traction rod is arranged on the traction frame assembly through a first connecting pin, and the other end of the traction rod is arranged on the traction seat assembly through a second connecting pin; the rear drawbar is mounted to the drawbar 84 by a locking pin.
The front suspension device comprises a front suspension bracket, a left lower pull rod, a left lifting oil cylinder, a right lower pull rod, a right lifting oil cylinder oil pipe assembly, a left lifting oil cylinder oil pipe assembly and an upper pull rod;
The front suspension bracket is arranged on the front end face and two side faces of the front bracket assembly in an imitation form; the left lower pull rod and the right lower pull rod are hinged at the bottom of the front suspension bracket; one end of the left lifting oil cylinder and one end of the right lifting oil cylinder are respectively hinged on the front suspension bracket 89, and the other ends of the left lifting oil cylinder and the right lifting oil cylinder are respectively hinged on the left lower pull rod and the right lower pull rod; the oil ports at two ends of the right lifting oil cylinder oil pipe assembly and the left lifting oil cylinder oil pipe assembly are respectively connected with oil inlets of the left lifting oil cylinder and the right lifting oil cylinder at one end, and the other ends are respectively connected with oil outlets on the power shift gearbox assembly; the upper pull rod is arranged on the front suspension bracket through a connecting pin shaft.
The invention has the beneficial effects that: the whole machine is reasonable in arrangement, meets the arrangement requirement of the national latest emission standard engine, has complete functions, can meet the requirement of duplex operation, expands the application range of the whole machine, and improves the income of users; the power shift transmission system is configured, the gear is reasonable, the operation speed range is wide, and the reliability is higher; the operation is convenient, the comfort is good, the operation is stable, and the work is efficient. The high-horsepower wheeled tractor not only meets the user compound operation requirement of the market, but also better solves the technical grade and the use limitation of the existing high-horsepower tractor products while meeting the adaptation requirement of future emission upgrading, improves the performance and the application range of the whole machine, has good application prospect and has strong market competitiveness.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a high horsepower wheeled tractor of the present invention;
FIG. 2 is a schematic diagram of a powertrain assembly of a high horsepower wheeled tractor of the present invention;
FIG. 3 is a schematic diagram of a running system assembly of a high horsepower wheeled tractor according to the present invention;
FIG. 4 is a schematic diagram of a drive train assembly of a high horsepower wheeled tractor of the present invention;
FIG. 5 is a schematic view of a cover assembly of a high horsepower wheeled tractor of the present invention;
FIG. 6 is a schematic diagram of a steering system assembly of a high horsepower wheeled tractor of the present invention;
FIG. 7 is a schematic diagram of the hydraulic system assembly of a high horsepower wheeled tractor of the present invention;
FIG. 8 is a schematic view of a rear working device of a high horsepower wheeled tractor of the present invention;
FIG. 9 is a schematic view of the front suspension of a high horsepower wheeled tractor of the present invention;
In the figure: A. a power system assembly; B. a traveling system assembly; C. a drive train assembly; D. a cover assembly; E. a steering system assembly; F. a hydraulic system assembly; G. a rear working device; H. a front suspension device; 1. a state four engine assembly; 2. post-treatment SCR assembly; 3. aftertreatment of the DPF assembly; 4. a radiating water tank assembly; 5. an intercooler assembly; 6. a heat radiation fan; 7. an air filtering assembly; 8. a main fuel tank assembly; 9. a sub-tank assembly; 10. a battery box assembly; 11. a urea tank; ;12. a form-imitating front bracket assembly; 13. a front drive axle assembly; 14. a front drive wheel assembly; 15. a rear drive wheel assembly; 16. a rear counterweight assembly; 17. gearbox assembly with speed reducing function; 18. a power shift gearbox assembly; 19. a reinforced rear drive box assembly; 20. a final drive assembly; 21. a front drive shaft assembly; 22. a brake system assembly with hydraulic assistance; 23. a hood assembly; 24. a hood right guard plate assembly; 25. a hood left guard plate assembly; 26. an instrument cover assembly; 27. cab weldment assembly; 28. a right console assembly; 29. a seat assembly with a multi-functional armrest; 30. cab car ladder assembly; 31. cab interior trim layers; 32. cab suspension assembly; 33. an air conditioning and warming system; 34. a steering wheel assembly; 35. a steering column mounting bracket assembly; 36. a steering column assembly; 37. a hydraulic diverter assembly; 38. an oil inlet pipe assembly of the steering gear; 39. a first high pressure oil filter; 40. an oil filter inlet pipe assembly; 41. an oil return pipe assembly of the steering system; 42. an oil inlet pipe assembly of the steering oil cylinder; 43. a steering cylinder right oil inlet pipe assembly; 44. a hydraulic radiator; 45. an oil inlet pipe assembly of the radiator; 46. an oil return pipe assembly of the radiator; 47. variable displacement plunger pump; 48. a second high pressure oil filter; 49. a return oil filter; 50. an oil suction filter; 51. a hydraulic oil tank assembly; 52. an electric control multi-way valve assembly; 53. an oil storage kettle; 54. variable plunger pump oil outlet pipe assembly; 55. variable plunger pump oil pipe assembly; 56. the return pipe assembly of the return oil filter; 57. a lubrication oil return pipe assembly; 58. a variable plunger pump oil drain pipe assembly; 59. the second oil return pipe assembly of the multi-way valve assembly; 60. an external agricultural implement oil return pipe assembly; 61. LS oil pipe assembly of variable plunger pump; 62. an electric control lifting oil outlet pipe assembly; 63. an electric control poppet valve oil return pipe assembly; 64. an oil inlet pipe of the left lifting oil cylinder; 65. an oil inlet pipe of the right lifting oil cylinder; 66. a first three-way joint; 67. a second three-way joint; 68. a hydraulic output joint; 69. the first oil return pipe assembly of the electric control multi-way valve; 70. an electric control multi-way valve overflow pipe assembly; 71. a left limit plate assembly; 72. a left lower pull rod assembly; 73. a fifth wheel assembly; 74. a left lift cylinder assembly; 75. a pull rod support welding piece; 76. a left lift bar assembly; 77. a right lifting rod assembly; 78. a right lift cylinder assembly; 79. an upper tie rod assembly; 80. a right limiting plate assembly; 81. a right lower pull rod assembly; 82. a lower pull rod spring; 83. a traction frame assembly; 84. a traction rod; 85. a rear drawbar; 86. a first connecting pin; 87. locking the pin shaft; 88. a second connecting pin; 89. a front suspension bracket; 90. a left lower pull rod; 91. a left lifting cylinder; 92. a right lifting cylinder; 93. a right lower pull rod; 94. a right lift cylinder oil pipe assembly; 95. a left lift cylinder oil pipe assembly; 96. a pull rod; 97. a front weight assembly.
Detailed Description
The invention is further described below with reference to the accompanying drawings. A high-horsepower wheeled tractor is a large tractor which has complete functions and meets the requirements of use and regulations.
A high horsepower wheeled tractor as in fig. 1 comprising: a power system assembly A, a traveling system assembly B, a transmission system assembly C, a covering assembly D, a steering system assembly E, a hydraulic system assembly F, a rear working device G and a front suspension device H. The front suspension device H, the power system assembly A, the transmission system assembly C and the rear working device G are sequentially connected from front to back in sequence according to the advancing direction of the tractor, and the front axle of the transmission system assembly C and the left end and the right end of the rear axle are connected with the traveling system assembly B together to form an assembly chassis assembly of the tractor; the steering system assembly E and the hydraulic system assembly F are sequentially arranged on the right side of the assembled chassis assembly of the tractor from front to back; the cover assembly D is mounted over the chassis assembly of the entire tractor. The power system assembly A is used as a power source for the tractor to work and provides power for the whole machine; the transmission system assembly C transmits the power of the power system assembly A to the tractor running system assembly B, the steering system assembly E and the hydraulic system assembly F respectively; the tractor is driven to run by the traveling system assembly B, the tractor is driven to turn by the steering system assembly E, the mechanical energy transmitted by the transmission system assembly C is converted into hydraulic energy by the hydraulic system assembly F, and the rear working device G and the front suspension device H are controlled to lift and descend when the farm tools are hung; the covering element assembly D provides protection for the power system assembly A and provides safety protection and rain and sun protection for the tractor driver.
The transmission system assembly C is used as the basis of the whole high-horsepower wheeled tractor, and other components are directly or indirectly arranged on the transmission system assembly C. The rear end face of the national four-engine assembly 1 in the power system assembly A is connected with the front end face of the gear box assembly 17 with the speed reduction function in the transmission system assembly C through bolts; the middle main fuel tank assembly 8 and the auxiliary fuel tank assembly 9 of the power system assembly A are respectively fixed on the left side surface and the right side surface of the gear box assembly 17 with the speed reduction function in the transmission system assembly C through bracket installation. The rear end face of the front bracket assembly 12 in the imitation form in the running system assembly B is fixed on the front end face of the national four-engine assembly 1 in the power system assembly A through bolts; the rear driving wheel assembly 15 in the traveling system assembly B is fixedly arranged at the left end and the right end of the final transmission assembly 20 in the transmission system assembly C through bolts. The covering component assembly D is fixedly arranged on the national four-engine assembly 1 on the power system assembly A through a bracket on the hood assembly 23, and the covering component assembly D is fixedly arranged on the left side and the right side of the gear box assembly 17 with the speed reduction function and the reinforced rear gear box assembly 19 on the transmission system assembly C through a bracket on the cab suspension assembly 32. The hydraulic steering gear assembly 37 on the steering system assembly E is fixedly arranged in the instrument cover assembly 26 in the covering assembly D and is respectively connected with the oil inlet and oil return ports E1 and E2 on the power shift gearbox assembly 18 in the transmission system assembly C and the left steering oil port E3 and the right steering oil port E4 of the front drive axle assembly 13 through oil pipes. The variable plunger pump 47 on the hydraulic system assembly F is arranged at a gear pump flange of the power shift gearbox assembly 18 in the transmission system assembly C; the electric control multiway valve assembly 52 is arranged on the upper end surface of the rear part of the reinforced rear transmission case assembly 19 in the transmission system assembly C through a bracket. The left lower pull rod assembly 72, the traction seat assembly 73, the left lifting oil cylinder assembly 74, the upper pull rod support welding piece 75, the right lifting oil cylinder assembly 78 and the traction frame assembly 83 of the rear working device G are fixedly arranged on the rear end face, the left side face and the right side face of the reinforced rear transmission case assembly 19 and the final transmission assembly 20 in the transmission system assembly C respectively through pin shafts and bolts. The front suspension device H is fixedly arranged on the left side and the right side of the imitation front bracket assembly 12 in the running system assembly B through bolts.
The power system assembly a is shown in fig. 2, and includes: the system comprises a four-engine assembly 1, a post-treatment SCR assembly 2, a post-treatment DPF assembly 3, a radiating water tank assembly 4, an intercooler assembly 5, a radiating fan 6, an air filter assembly 7, a main fuel tank assembly 8, a secondary fuel tank assembly 9, a battery box assembly 10 and a urea tank 11.
The rear end of the national fourth engine assembly 1 is connected with the front end of the gear box assembly 17 with the speed reduction function in the transmission system assembly C through bolts, and the front end is connected with the rear end of the imitation front bracket assembly 12 in the running system assembly B through bolts; the radiator fan 6 is arranged on a fan shaft of the national fourth engine assembly 1; the radiating water tank assembly 4 and the intercooler assembly 5 are sequentially arranged on the front bracket assembly 12 in an imitation form in the running system assembly B through bolts, the radiating water tank assembly 4 is connected with the water inlet and outlet of the national fourth engine assembly 1 through a water inlet and outlet pipe, and the intercooler assembly 5 is connected with the air inlet and outlet of the national fourth engine assembly 1 through a water inlet and outlet pipe; the air filter assembly 7 is fixed on the upper part of the national fourth engine assembly 1 through a bracket and is connected with an air inlet of a supercharger of the national fourth engine assembly 1 through an air outlet pipe; the aftertreatment SCR assembly 2 and the aftertreatment DPF assembly 3 are respectively arranged at the upper part of the national four-engine assembly 1 and at the right side of the gear box assembly 17 with a speed reduction function in the transmission system assembly C through brackets; the main fuel tank assembly 8 is arranged on the right side of the power shift gearbox assembly 18 in the transmission system assembly C through a bracket; the auxiliary fuel tank assembly 9 is arranged on the right side of the gear box assembly 17 with the speed reduction function in the transmission system assembly C through a bracket; the battery box assembly 10 and the urea tank 11 are sequentially fixed at the rear part of the auxiliary fuel oil tank assembly 9 from front to back through a bracket.
The four-engine assembly 1 provides a power source for the whole machine, and power is transmitted to a walking system assembly B for driving walking, a variable plunger pump 47 of a hydraulic system F and a power output shaft of the transmission system assembly C through a transmission system assembly C. The aftertreatment SCR assembly 2 and the aftertreatment DPF assembly 3 act together to reduce the exhaust emission and noise of the national fourth engine assembly 1; the radiating water tank assembly 4 is used for cooling the national engine assembly 1 through cooling liquid circulation; the intercooler assembly 5 and the cooling fan 6 provide low-temperature air for the national fourth engine assembly 1 through cooling air; the heat load is reduced, and the air inflow is improved; the air filter assembly 7 provides clean cold air for the national four-engine assembly 1; the fuel main fuel tank assembly 8 and the auxiliary fuel tank assembly 9 store diesel fuel required for the national four-engine assembly 1; the battery box assembly 10 stores the electric quantity required for starting for the national four-engine assembly 1; the urea tank 11 provides urea for the aftertreatment SCR assembly 2 and the aftertreatment DPF assembly 3.
Running gear assembly B as shown in fig. 3, comprising: front weight assembly 11, contoured front bracket assembly 12, front drive axle assembly 13, front drive wheel assembly 14, rear drive wheel assembly 15, and rear weight assembly 16.
The front counterweight assembly 11 is arranged at the front end of the simulated front bracket assembly 12; the front drive axle assembly 13 is arranged at the lower part of the simulated front bracket assembly 12; the front driving wheel assembly 14 is arranged at the left end and the right end of the front driving axle assembly 13; rear drive wheel assemblies 15 are mounted at the left and right ends of the final drive assembly 20, and rear weight assemblies 16 are mounted on the webs of the rear drive wheel assemblies 15. The traveling system assembly B is connected with a final transmission assembly 20 in the transmission system assembly C through a rear driving wheel assembly 15 to realize a rear wheel driving traveling function; the front drive axle assembly 13 is connected with a front transmission shaft assembly 21 in the transmission system assembly C to finish the front power transmission with the transmission system assembly C, so that the four-wheel drive walking function of front and rear wheels is realized; the front drive axle assembly 13 is connected with left and right steering oil pipes of the steering system E, so that a left and right steering function is realized.
The transmission assembly C is shown in fig. 4, and includes: a gear box assembly 17 with a speed reducing function, a power shift gearbox assembly 18, a reinforced rear transmission box assembly 19, a final transmission assembly 20, a braking system assembly 21 with hydraulic assistance and a front transmission shaft assembly 22.
The rear end of the gear box assembly 17 with the speed reduction function is connected with the front end of the power shift gearbox assembly 18 through bolts; the rear end of the power shift gearbox assembly 18 is connected with a reinforced rear gearbox assembly 19 through bolts; the final drive assembly 20 is mounted on both sides of the reinforced rear drive box assembly 19 by bolts; the brake system assembly 21 with hydraulic power is arranged on the front wall plate of the cab welding member assembly 27 in the covering assembly D through bolt fastening and is connected with an oil port on the transmission system assembly C through an oil pipe; the front transmission shaft assembly 22 is fastened to the rear end of the front drive axle assembly 13 and the front end of the gear box assembly 17 with a speed reduction function in the running system assembly B by bolts.
The transmission system assembly C can transmit the power of the national four-engine assembly 1 in the power system assembly A, so that PTO operation and walking functions are realized. The gear box assembly 17 with the speed reduction function can realize firm connection between the four-engine assembly 1 of the power system assembly A and the power shift gearbox assembly 18, and meanwhile realize flexible power transmission of the four-engine assembly 1 of the power system assembly A, reduce impact on the power shift gearbox assembly 18, and realize reasonable speed ratio matching of the transmission system assembly C and the walking system assembly B under four-wheel drive working conditions. Part of power of the national four-engine assembly 1 in the power system assembly A is transmitted to the rear driving wheel assembly 15 in the traveling system assembly B at two sides through the final transmission assembly 20, and the rear driving wheel assembly 15 in the traveling system assembly B is driven to rotate, so that the traveling function of two-wheel driving is completed; part of power of the four-engine assembly 1 in the power system assembly A is transmitted to the front drive axle assembly 13 in the running system assembly B through the front transmission shaft assembly 21 to drive the front drive wheel assemblies 14 in the running system assemblies B on two sides to rotate, so that the running function of front wheel drive is completed; the other part of power of the power system assembly A Chinese four-engine assembly 1 is transmitted to a power output shaft through the power shift gearbox assembly 18, so that the working tool can be driven. The powershift gearbox assembly 18 can achieve transmission and disconnection of diesel power by controlling the engagement or disengagement of friction plates of an internal clutch; or by controlling different shifting or reversing clutches inside the powershift gearbox assembly 18, selecting different gear positions of different selection gearboxes, realizing interval or section speed change and realizing forward and reverse of the tractor; or the diesel engine is transmitted or cut off through the power of the power output shaft by controlling the power output shaft to be combined with the separation button; the powershift transmission assembly 18 simultaneously provides the power source for the steering system assembly E required for steering.
The reinforced rear transmission case assembly 19 provides a power output port and a mounting connection position for the hydraulic system assembly F, and provides a mounting connection position for the rear working device G and implements a working function of the power output shaft.
The braking system assembly 21 with hydraulic assistance can realize the functions of parking and service braking; and the braking control force is regulated through hydraulic assistance, so that the braking efficiency is improved, and the braking stroke is reduced.
The cover assembly D, as shown in fig. 5, includes: the hood assembly 23, the hood right guard assembly 24, the hood left guard assembly 25, the instrument hood assembly 26, the cab weldment assembly 27, the right side console assembly 28, the seat assembly 29 with the multifunctional steering armrests, the cab ladder assembly 30, the cab interior trim 31, the cab suspension assembly 32 and the air conditioning and warming system 33.
The hood assembly 23 is respectively arranged at the upper parts of the gear box assemblies 17 with the speed reduction function in the four-engine assembly 1 and the transmission system assembly C of the power system assembly A through a front bracket and a rear bracket; the hood right guard plate assembly 24 and the hood left guard plate assembly 25 are arranged on two sides of the national four-engine assembly 1 through brackets, and form a uniform assembly relation with the hood right guard plate assembly 24 and the hood left guard plate assembly 25 when the front hood assembly 23 falls down; the instrument cover assembly 26 is bolted to the front panel center and the floor front of the cab weldment assembly 27; the right console assembly 28 is mounted on the right side of the cab weldment assembly 27 by bolts; a seat assembly 29 with a multi-function armrest is bolted to the floor mid-section of the cab weldment assembly 27; the cab apron assembly 30 is mounted on the left front side of the floor of the cab weldment assembly 27 by bolts; the cab interior trim layer 31 is mounted inside the cab weldment assembly 27 by self-tapping screws; the cab suspension assembly 32 is fixedly arranged on two sides of the gearbox assembly 17 with the speed reduction function and two sides of the rear part of the reinforced rear gearbox assembly 19 in the transmission system assembly C through bolts; the air conditioning and heating system 33 assembly is arranged at the bottom of the cab welding assembly 27 through bolts and is connected with an air conditioning compressor and a water pump on the national four-engine assembly 1 in the power system assembly A through pipelines; cab weldment assembly 27 is bolted to cab suspension assembly 32.
The hood assembly 23, the hood right guard plate assembly 24 and the hood left guard plate assembly 25 provide protection for the national four-engine assembly 1, support the lamp, and play an attractive role at the same time, and the lower part is controlled to be opened and closed by a lock. The instrument housing assembly 26 is used to mount electrical instruments and to form the entire instrument desk, providing support for the operating levers and electrical components. The cab weldment assembly 27 provides a closed space for a driver to play a role in safety protection and in rain and sun protection. The right operating table assembly 28 and the seat assembly 29 with the multifunctional operating armrests realize the integrated arrangement of various operating handles and operating keys, different operating buttons can be selected according to different operating conditions, the operating efficiency is improved, and the high-efficiency and the high-accuracy operating functions are realized. The interior decorative layer 31 plays roles of sealing, dust prevention, water prevention, heat preservation, vibration isolation and skid prevention. The cab suspension assembly 32 provides ride comfort through a vibration damping function on the brackets.
The steering system assembly E is shown in fig. 6, and includes: steering column mounting bracket assembly 36, steering column assembly 35, steering wheel assembly 34, hydraulic steering assembly 37, steering oil inlet tube assembly 38, first high pressure oil filter 39, oil filter oil inlet tube assembly 40, steering system oil return tube assembly 41, steering cylinder left oil inlet tube assembly 42, steering cylinder right oil inlet tube assembly 43.
The steering wheel assembly 34 is fixed to the top end of the steering column assembly 35; the steering column mounting bracket assembly 36 is bolted to the front wall panel of the cab weldment assembly 27 in the cover assembly D; the steering column assembly 35 is fixed to the steering column mounting bracket assembly 36 by a bracket; the hydraulic steering assembly 37 is fixed to the bottom of the steering column assembly 35; one end of a steering gear oil inlet pipe assembly 38 is connected with an oil inlet of the hydraulic steering gear assembly 37, and the other end of the steering gear oil inlet pipe assembly is connected with an oil outlet of a first high-pressure oil filter 39; the first high pressure oil filter 39 is secured to the right side of the powershift transmission assembly 18 in the driveline assembly C by a bracket; one end of the oil filter inlet pipe assembly 40 is connected with the oil inlet of the first high-pressure oil filter 39, and the other end is connected with a steering oil outlet E1 on the power shift gearbox assembly 18 in the transmission system assembly C; one end of the steering system oil return pipe assembly 41 is connected with an oil return port of the hydraulic steering device assembly 37, and the other end of the steering system oil return pipe assembly is connected with a steering oil return port E2 of the power shift gearbox assembly 18 in the transmission system assembly C; one end of the steering cylinder left oil inlet pipe assembly 42 and one end of the steering cylinder right oil inlet pipe assembly 43 are respectively connected with left and right oil outlets of the hydraulic steering device assembly 37, and the other end of the steering cylinder left and right oil inlets E3 and E4 are connected with the front drive axle assembly 13 in the running system assembly B.
The hydraulic steering assembly 37 obtains power required for steering for the steering system assembly E. The steering wheel assembly 34 is rotated clockwise or anticlockwise to drive the valve core of the hydraulic steering device assembly 37 to move, the left and right movement of the valve core controls the output and the pressure of pressure oil of a steering valve, the steering oil cylinder oil inlet pipe assembly 42 and the steering oil cylinder right oil inlet pipe assembly 43 are connected with the steering oil cylinder on the front drive axle assembly 13 in the traveling system assembly B, and the steering is realized by controlling the displacement of a piston rod. The steering gear oil inlet pipe assembly 38 and the steering system oil return pipe assembly 41 are connected with the oil inlet and outlet on the power shift gearbox assembly 18 in the transmission system assembly C to form a steering power transmission inlet and outlet loop.
The hydraulic system assembly F is shown in fig. 7, and includes: hydraulic radiator 44, radiator oil inlet pipe assembly 45, radiator oil return pipe assembly 46, variable plunger pump 47, second high-pressure oil filter 48, return oil filter 49, suction oil filter 50, hydraulic oil tank assembly 51, electric control multiple-way valve assembly 52, oil reservoir 53, variable plunger pump oil outlet pipe assembly 54, variable plunger pump oil outlet pipe assembly 55, return oil filter oil return pipe assembly 56, lubrication oil return pipe assembly 57, variable plunger pump oil outlet pipe assembly 58, multiple-way valve assembly second oil return pipe assembly 59, external farm tool oil return pipe assembly 60, variable plunger pump LS oil pipe assembly 61, electric control lift oil outlet pipe assembly 62, electric control lift oil return pipe assembly 63, left lift oil cylinder oil inlet pipe 64, right lift oil cylinder oil inlet pipe 65, first three-way joint 66, second three-way joint 67, hydraulic output joint 68, electric control multiple-way valve first oil return pipe assembly 69, and electric control multiple-way valve assembly 70.
The hydraulic radiator 44 is arranged on the radiating water tank assembly 4 and the intercooler assembly 5 in the power system assembly A through brackets; one end of the radiator oil inlet pipe assembly 44 and one end of the radiator oil return pipe assembly 45 are respectively connected with an oil inlet and an oil return port on the hydraulic radiator 44, and the other end of the radiator oil inlet pipe assembly and the other end of the radiator oil return pipe assembly are respectively connected with an oil port on the power shift gearbox assembly 18 in the transmission system assembly C; the variable plunger pump 47 is arranged at the flange of the right gear pump of the reinforced rear transmission case assembly 19 in the transmission system assembly C; the second high-pressure oil filter 48 is mounted at the lower part of the variable displacement pump 47 by screw connection; the return oil filter 49 is mounted by a bracket on the right side of the reinforced rear driveline assembly 19 in the driveline assembly C; the oil suction filter 50 is mounted at the bottom flange of the hydraulic oil tank assembly 51 through bolts; the hydraulic oil tank assembly 51 is mounted on the right side part of the final drive assembly 20 in the drive system assembly C through a bracket; the electric control multi-way valve assembly 52 is arranged at the upper rear end of the reinforced rear transmission case assembly 19 in the transmission system assembly C through a bracket; the oil storage pot 53 is arranged on the left side and the right side of the rear end of the final transmission assembly 20 in the transmission system assembly C through a bracket; one end of the variable plunger pump outlet pipe assembly 54 is connected with an oil outlet of the variable plunger pump 47, and the other end is connected with an oil inlet of the electric control multiway valve assembly 52; one end of the variable plunger pump suction pipe assembly 55 is connected with an oil suction port of the variable plunger pump 47, and the other end of the variable plunger pump suction pipe assembly is connected with an oil outlet of the oil suction filter 50; one end of the return pipe assembly 56 of the return oil filter is connected with the return port of the hydraulic oil tank assembly 51, and the other end is connected with the outlet of the return oil filter 49; one end of a second return pipe assembly 59 of the multi-way valve assembly is connected with an oil inlet of the return oil filter 49, and the other end of the second return pipe assembly is connected with an oil return port of the first three-way joint 66; one end of the lubrication return pipe assembly 57 is connected with a lubrication oil port of the variable displacement plunger pump 47, and the other end of the lubrication return pipe assembly is connected with a lubrication return port of the hydraulic oil tank assembly 51; one end of the variable plunger pump oil drain pipe assembly 58 is connected with an oil drain port of the variable plunger pump oil drain pipe assembly 54, and the other end of the variable plunger pump oil drain pipe assembly is connected with an oil drain port of the hydraulic oil tank assembly 51; the number of the hydraulic output connectors 68 is 9, 8 of the hydraulic output connectors are respectively inserted and installed on the hydraulic output oil inlet and return ports of the electric control multi-way valve assembly 52, and the 9 th connector is installed at one end of the external agricultural implement oil return pipe assembly 60; one end of the external agricultural implement oil return pipe assembly 60 is connected with the 9 th of the hydraulic output joints 68, and the other end is connected with an oil distributing port of the first three-way joint 66; one end of the variable plunger pump LS oil pipe assembly 61 is connected with an LS oil port of the variable plunger pump 47, and the other end of the variable plunger pump LS oil pipe assembly 61 is connected with an LS oil port of the electric control multi-way valve assembly 52; one end of the electric control lifting oil outlet pipe assembly 62 is connected with a lifting oil outlet of the electric control multiway valve assembly 52, and the other end of the electric control lifting oil outlet pipe assembly is connected with an oil inlet of the second three-way joint 67; one end of the electric control poppet oil return pipe assembly 63 is connected with a poppet oil return port of the electric control multiway valve assembly 52, and the other end is connected with a poppet oil return port of the hydraulic oil tank assembly 51; one end of the left lifting oil cylinder oil inlet pipe 64 and one end of the right lifting oil cylinder oil inlet pipe 65 are respectively connected with two oil return ports of the second three-way joint 67, and the other ends of the left lifting oil cylinder oil inlet pipe and the right lifting oil cylinder oil inlet pipe are respectively connected with oil inlets of the left lifting oil cylinder and the right lifting oil cylinder; one end of a first oil return pipe assembly 69 of the multi-way valve assembly is connected with an oil inlet of the first three-way joint 66, and the other end of the first oil return pipe assembly is connected with an oil return port of the electric control multi-way valve assembly 52; one end of the electric control multi-way valve overflow pipe assembly 70 is respectively connected with an overflow port on the electric control multi-way valve assembly 52, and the other end is respectively connected with an oil inlet on the oil storage pot 53.
The hydraulic system assembly F converts the power portion transmitted by the engine into hydraulic system pressure by means of the variable displacement pump 47. The hydraulic radiator 44 cools the transmission system assembly C by hydraulic oil circulation cooling. The second high-pressure oil filter 48, the return oil filter 49, and the suction oil filter 50 can ensure cleanliness of the hydraulic oil. The hydraulic oil tank assembly 51 reserves hydraulic oil required for the operation of the hydraulic system assembly F. The electronically controlled multiplex valve assembly 52 is capable of controlling the flow of hydraulic oil through the hydraulic system, effecting actuation and hydraulic output of the suspension bars of the rear working device assembly G and the front suspension device H.
The rear working device G, as shown in fig. 8, includes: the left limiting plate assembly 71, the left lower pull rod assembly 72, the traction seat assembly 73, the left lifting oil cylinder assembly 74, the upper pull rod support welding member 75, the left lifting rod assembly 76, the right lifting rod assembly 77, the right lifting oil cylinder assembly 78, the upper pull rod assembly 79, the right limiting plate assembly 80, the right lower pull rod assembly 81, the lower pull rod spring 82, the traction frame assembly 83, the traction rod 84, the rear traction rod 85, the first connecting pin 86, the locking pin 87 and the second connecting pin 88.
The upper pull rod support welding piece 75 is arranged at the upper part of the rear end surface of the reinforced rear transmission case assembly 19 in the transmission system assembly C through bolts; the upper pull rod assembly 79 is connected with the upper pull rod support welding piece 75 through a connecting pin shaft; the right limiting plate assembly 80 and the left limiting plate assembly 71 are respectively mounted on the side plates of the traction frame assembly 83 through bolts; the left lifting rod assembly 76 and the right lifting rod assembly 77 are respectively connected with the left lifting arm, the right lifting arm, the left lower pull rod assembly 72 and the right lower pull rod assembly 81 on the reinforced rear transmission box assembly 19 in the transmission system assembly C through pin shafts at two ends; the left lower pull rod assembly 72 and the right lower pull rod assembly 81 are respectively arranged on a bottom bent rod support of the reinforced rear transmission case assembly 19 in the transmission system assembly C through pin shafts; the right lifting oil cylinder assembly 78 and the left lifting oil cylinder assembly 74 are respectively arranged on left and right lifting arms and left and right oil cylinder supports of the reinforced rear transmission case assembly 19 in the transmission system assembly C through pin shafts; two ends of the lower pull rod spring 82 are respectively hung on the left lower pull rod assembly 73 and the right lower pull rod assembly 81; the G1 surface of the traction seat assembly 73 is arranged at the bottom of the reinforced rear transmission case assembly 19 in the transmission system assembly C through bolts; the traction frame assembly 83 is arranged on the rear end face of the reinforced rear transmission case assembly 19 in the transmission system assembly C through bolts; one end of a traction rod 84 is mounted on the traction frame assembly 83 through a first connecting pin 86, and the other end is mounted on the traction seat assembly 73 through a second connecting pin 88; the rear drawbar 85 is mounted to the drawbar 84 by a locking pin 87.
The flow of hydraulic oil in the left lifting oil cylinder assembly 74 and the right lifting oil cylinder assembly 78 is controlled by controlling the electric control multi-way valve assembly 52 on the hydraulic system assembly F, so that the piston rods of the lifting oil cylinders are driven to stretch out and draw back, the lifting arm of the reinforced rear transmission case assembly 19 in the transmission system assembly C is pushed to rotate around the lifting shaft, the left lower pull rod assembly 72 and the right lower pull rod assembly 81 are lifted or put down through the left lifting rod assembly 76 and the right lifting rod assembly 77, and the lifting of the suspension rod of the rear working device G is realized. The left and right limiting plate assemblies 71, 80 and the lower pull rod spring 82 act together to limit the left and right lower pull rod assemblies 72, 81 and control the swing amount of the operation with the machine tool. The traction frame assembly 83 provides mounting support for the left limiting plate assembly 71 and the right limiting plate assembly 80, and meanwhile different swinging angle requirements of the traction rod 84 are achieved through the locking pin shaft 87 by using different mounting positions on the traction frame assembly.
The front suspension device H, as shown in fig. 9, includes: front suspension brackets 89, left drop rod 90, left lift cylinder 91, right lift cylinder 92, right drop rod 93, right lift cylinder oil tube assembly 94, left lift cylinder oil tube assembly 95, and upper tie rod 96.
The front suspension brackets 89 are mounted on the front end and two sides of the front bracket assembly 12 in an imitation form in the traveling system assembly B through bolts; the left lower pull rod 90 and the right lower pull rod 93 are arranged at the bottom of the front suspension bracket 89 through connecting pin shafts; one end of the left lifting oil cylinder 91 and one end of the right lifting oil cylinder 92 are respectively arranged on the front suspension bracket 89 through connecting pin shafts, and the other ends of the left lifting oil cylinder 91 and the right lifting oil cylinder 92 are respectively arranged on the left lower pull rod 90 and the right lower pull rod 93 through connecting pin shafts; the oil ports at the two ends of the right lifting oil cylinder oil pipe assembly 94 and the left lifting oil cylinder oil pipe assembly 95 are respectively connected with the oil inlets of the left lifting oil cylinder 91 and the right lifting oil cylinder 92 at one end, and are respectively connected with the oil outlets on the power shift gearbox assembly 18 in the transmission system assembly C at the other end; the upper tie rod 96 is mounted to the front suspension bracket 89 by a connecting pin.
The front suspension brackets 89 provide mounting support for the left and right drop bars 90, 93. The flow of hydraulic oil in the left lifting oil cylinder 91 and the right lifting oil cylinder 92 is controlled by controlling the electric control multi-way valve assembly 52 on the hydraulic system assembly F, so that the piston rods of the lifting oil cylinders are driven to stretch out and draw back, the left lower pull rod 90 and the right lower pull rod 93 are lifted or put down, and the lifting function of the farm implement configured by the front suspension device H is realized.
Claims (4)
1. A high horsepower wheeled tractor, characterized by: the device comprises a power system assembly, a traveling system assembly, a transmission system assembly, a covering assembly, a steering system assembly, a hydraulic system assembly, a rear working device and a front suspension device;
The front suspension device, the power system assembly, the transmission system assembly and the rear working device are sequentially connected and arranged from front to back according to the advancing direction, and are connected with the traveling system assembly through the left end and the right end of a front axle and a rear axle of the transmission system assembly to form an assembly chassis assembly of the tractor;
The power system assembly comprises a national four-engine assembly, a post-treatment SCR assembly, a post-treatment DPF assembly, a radiating water tank assembly, an intercooler assembly, a radiating fan, an air filter assembly, a main fuel tank assembly, an auxiliary fuel tank assembly, a battery box assembly and a urea tank, wherein the rear end of the national four-engine assembly is connected with the front end of a gear box assembly with a speed reduction function in the transmission system assembly, and the front end of the national four-engine assembly is connected with the rear end of a profiling front bracket assembly in the walking system assembly; the radiator fan is arranged on a fan shaft of the national fourth engine assembly; the cooling water tank assembly and the intercooler assembly are sequentially arranged on the profiling front bracket assembly in the traveling system assembly, the cooling water tank assembly is connected with the water inlet and the water outlet of the national four-engine assembly through water inlet and outlet pipes, and the intercooler assembly is connected with the air inlet and the air outlet of the national four-engine assembly through an air inlet pipe and an air outlet pipe; the air filter assembly is fixed at the upper part of the national fourth engine assembly through a bracket and is connected with an air inlet of a supercharger of the national fourth engine assembly through an air outlet pipe; the aftertreatment SCR assembly and the aftertreatment DPF assembly are respectively arranged at the upper part of the national four-engine assembly through brackets and are arranged at the right side of the gear box assembly with the speed reduction function in the transmission system assembly; the main fuel tank assembly for supplying oil to the national four-engine assembly is arranged on the right side of the power shift gearbox assembly in the transmission system assembly through a bracket; the auxiliary fuel tank assembly for supplying oil to the national four-engine assembly is arranged on the right side of the gear box assembly with the speed reduction function in the transmission system assembly through a bracket; the battery box assembly for providing starting current for the national four-engine assembly and the urea tank for providing urea for the aftertreatment SCR assembly and the aftertreatment DPF assembly are sequentially fixed at the rear part of the auxiliary fuel tank assembly from front to back through a bracket;
The transmission system assembly comprises a gear box assembly with a speed reduction function, a power shift gearbox assembly, a reinforced rear transmission box assembly, a final transmission assembly, a braking system assembly with hydraulic assistance and a front transmission shaft assembly;
The rear end of the gear box assembly with the speed reduction function is connected with the power shift gearbox assembly and the front end; the rear end of the power shift gearbox assembly is connected with the reinforced rear gearbox assembly; the final transmission assembly is arranged at two sides of the reinforced rear transmission box assembly through bolts; the brake system assembly with hydraulic power assistance is fixedly arranged on the covering assembly and is connected with an oil port on the transmission system assembly through an oil pipe; the front transmission shaft assembly is fastened between the rear end of the front drive axle assembly and the front end of the gear box assembly with the speed reduction function in the traveling system assembly;
the traveling system assembly comprises a front counterweight assembly, a profiling front bracket assembly, a front drive axle assembly, a front drive wheel assembly, a rear drive wheel assembly and a rear counterweight assembly; the front counterweight assembly is arranged at the front end of the simulated front bracket assembly; the front drive axle assembly is arranged at the lower part of the front bracket assembly in an imitation form; the front driving wheel assembly is arranged at the left end and the right end of the front driving axle assembly; the rear driving wheel assembly is arranged at the left end and the right end of the final transmission assembly in the transmission system assembly, and the rear counterweight assembly is arranged on a radial plate of the rear driving wheel assembly;
The front suspension device comprises a front suspension bracket, a left lower pull rod, a left lifting oil cylinder, a right lower pull rod, a right lifting oil cylinder oil pipe assembly, a left lifting oil cylinder oil pipe assembly and an upper pull rod;
The front suspension bracket is arranged on the front end face and two side faces of the front bracket assembly in an imitation form; the left lower pull rod and the right lower pull rod are hinged at the bottom of the front suspension bracket; one end of the left lifting oil cylinder and one end of the right lifting oil cylinder are respectively hinged on the front suspension bracket, and the other ends of the left lifting oil cylinder and the right lifting oil cylinder are respectively hinged on the left lower pull rod and the right lower pull rod; the oil ports at two ends of the right lifting oil cylinder oil pipe assembly and the left lifting oil cylinder oil pipe assembly are respectively connected with oil inlets of the left lifting oil cylinder and the right lifting oil cylinder at one end, and the other ends are respectively connected with oil outlets on the power shift gearbox assembly; the upper pull rod is arranged on the front suspension bracket through a connecting pin shaft;
The steering system assembly and the hydraulic system assembly are connected and installed on the right side of the assembled chassis assembly from front to back according to the advancing direction, the steering system assembly is connected with the traveling system assembly to realize the turning action of the tractor, the hydraulic system assembly converts mechanical energy transmitted by the transmission system assembly into hydraulic energy, and the rear working device and the front suspension device are controlled to act;
The steering system assembly comprises a steering column mounting bracket assembly, a steering column assembly, a steering wheel assembly, a hydraulic steering gear assembly, a steering gear oil inlet pipe assembly, a first high-pressure oil filter, an oil filter oil inlet pipe assembly, a steering system oil return pipe assembly, a steering oil cylinder left oil inlet pipe assembly and a steering oil cylinder right oil inlet pipe assembly;
The steering wheel assembly is fixed at the top end of the steering column assembly; the steering column mounting bracket assembly is fixed on the covering component assembly; the steering column assembly is fixed on the steering column mounting bracket assembly through a bracket; the hydraulic steering gear assembly is fixed at the bottom of the steering column assembly; one end of the steering gear oil inlet pipe assembly is connected with an oil inlet of the hydraulic steering gear assembly, and the other end of the steering gear oil inlet pipe assembly is connected with an oil outlet of the first high-pressure oil filter; the first high-pressure oil filter is fixed on the right side of a power shift gearbox assembly in the transmission system assembly through a bracket; one end of an oil inlet pipe assembly of the oil filter is connected with an oil inlet of the first high-pressure oil filter, and the other end of the oil inlet pipe assembly of the oil filter is connected with a steering oil outlet E1 on a power shifting gearbox assembly in a transmission system assembly; one end of the steering system oil return pipe assembly is connected with an oil return port of the hydraulic steering device assembly, and the other end of the steering system oil return pipe assembly is connected with a steering oil return port E2 of the power shift gearbox assembly in the transmission system assembly; one end of the left oil inlet pipe assembly of the steering oil cylinder and one end of the right oil inlet pipe assembly of the steering oil cylinder are respectively connected with left and right oil outlets of the hydraulic steering device assembly, and the other end of the left oil inlet pipe assembly of the steering oil cylinder and the right oil inlet pipe assembly of the steering oil cylinder are connected with left and right oil inlets E3 and E4 of the steering oil cylinder on the front drive axle assembly in the traveling system assembly;
the cover assembly covers over the mounting base assembly.
2. The high horsepower wheeled tractor of claim 1, wherein: the covering part assembly comprises a hood assembly, a hood right guard plate assembly, a hood left guard plate assembly, an instrument hood assembly, a cab welding assembly, a right operating table assembly, a seat assembly with a multifunctional operating handrail, a cab car ladder assembly, a cab inner decoration layer, a cab suspension assembly and an air conditioner and warm air system;
The hood assembly is respectively arranged at the upper parts of the gear box assembly with the speed reduction function in the power system assembly China four-engine assembly and the transmission system assembly through a front bracket and a rear bracket; the hood right guard plate assembly and the hood left guard plate assembly are respectively arranged at two sides of the national four-engine assembly, and form a uniform assembly relation with the hood right guard plate assembly and the hood left guard plate assembly when the front hood assembly falls down; the instrument cover assembly is fixedly arranged on the front wall plate of the cab welding assembly in the covering assembly; the right console assembly is arranged on the right side of the cab welding part assembly; the seat assembly with the multifunctional control armrest is arranged in the middle of the floor of the cab welding part assembly; the cab car ladder assembly is arranged on the left front side part of the floor of the cab welding piece assembly; the cab interior trim layer is arranged inside the cab welding part assembly; the cab suspension assembly is fixedly arranged on two sides of the gear box assembly and two sides of the rear part of the reinforced rear transmission box assembly; the air-conditioning warm air system is arranged at the bottom of the cab welding part assembly and is connected with an air-conditioning compressor and a water pump on the national four-engine assembly through pipelines; the cab weldment assembly is mounted on the cab suspension assembly.
3. The high horsepower wheeled tractor of claim 1, wherein: the hydraulic system assembly comprises a hydraulic radiator, a radiator oil inlet pipe assembly, a radiator oil return pipe assembly, a variable plunger pump, a second high-pressure oil filter, an oil return filter, an oil suction filter, a hydraulic oil tank assembly, an electric control multi-way valve assembly, an oil storage pot, a variable plunger pump oil outlet pipe assembly, an oil return filter oil return pipe assembly, a lubricating oil return pipe assembly, a variable plunger pump oil outlet pipe assembly, a multi-way valve assembly second oil return pipe assembly, an external agricultural implement oil return pipe assembly, a variable plunger pump LS oil pipe assembly, an electric control lifting oil outlet pipe assembly, an electric control lifting oil return pipe assembly, a left lifting oil cylinder oil inlet pipe, a right lifting oil cylinder oil inlet pipe, a first three-way joint, a second three-way joint, a hydraulic output joint, an electric control multi-way valve first oil return pipe assembly and an electric control multi-way valve overflow pipe assembly;
The hydraulic radiator is arranged on the radiating water tank assembly and the intercooler assembly through the bracket; one end of the radiator oil inlet pipe assembly and one end of the radiator oil return pipe assembly are respectively connected with an oil inlet and an oil return port on the hydraulic radiator, and the other end of the radiator oil inlet pipe assembly and the other end of the radiator oil return pipe assembly are respectively connected with an oil port on the power shift gearbox assembly; the variable plunger pump is arranged at the flange of the right gear pump of the reinforced rear transmission case assembly; the second high-pressure oil filter is arranged at the lower part of the variable displacement pump; the return oil filter is arranged on the right side of the reinforced rear transmission case assembly through a bracket; the oil suction filter is arranged at the bottom flange of the hydraulic oil tank assembly; the hydraulic oil tank assembly is arranged at the right side part of the final transmission assembly through a bracket; the electric control multi-way valve assembly is arranged at the upper end of the rear part of the reinforced rear transmission case assembly through a bracket; the oil storage pot is arranged at the left side and the right side of the rear end of the middle final transmission assembly through a bracket; one end of the variable plunger pump oil outlet pipe assembly is connected with an oil outlet of the variable plunger pump, and the other end of the variable plunger pump oil outlet pipe assembly is connected with an oil inlet of the electric control multiway valve assembly; one end of the variable plunger pump suction pipe assembly is connected with an oil suction port of the variable plunger pump, and the other end of the variable plunger pump suction pipe assembly is connected with an oil outlet of the oil suction filter; one end of the return pipe assembly of the return oil filter is connected with the return port of the hydraulic oil tank assembly, and the other end of the return pipe assembly is connected with the outlet of the return oil filter; one end of a second oil return pipe assembly of the multi-way valve assembly is connected with an oil inlet of the oil return filter, and the other end of the second oil return pipe assembly is connected with an oil return port of the first three-way joint; one end of the lubrication oil return pipe assembly is connected with a lubrication oil port of the variable plunger pump, and the other end of the lubrication oil return pipe assembly is connected with a lubrication oil return port of the hydraulic oil tank assembly; one end of the variable plunger pump oil drain pipe assembly is connected with an oil drain port of the variable plunger pump oil drain pipe assembly, and the other end of the variable plunger pump oil drain pipe assembly is connected with an oil drain port of the hydraulic oil tank assembly; the number of the hydraulic output connectors is N, wherein N-1 hydraulic output oil inlet and return ports of the electric control multi-way valve assembly are respectively inserted and installed on one end of an external agricultural implement oil return pipe assembly; one end of the external agricultural implement oil return pipe assembly is connected with the Nth in the hydraulic output joint, and the other end of the external agricultural implement oil return pipe assembly is connected with the oil distributing port of the first three-way joint; one end of the variable plunger pump LS oil pipe assembly is connected with an LS oil port of the variable plunger pump, and the other end of the variable plunger pump LS oil pipe assembly is connected with an LS oil port of the electric control multiway valve assembly; one end of the electric control lifting oil outlet pipe assembly is connected with a lifting oil outlet of the electric control multiway valve assembly, and the other end of the electric control lifting oil outlet pipe assembly is connected with an oil inlet of the second three-way joint; one end of the electric control poppet valve oil return pipe assembly is connected with a poppet valve oil return port of the electric control multiway valve assembly, and the other end of the electric control poppet valve oil return pipe assembly is connected with a poppet valve oil return port of the hydraulic oil tank assembly; one end of the left lifting oil cylinder oil inlet pipe and one end of the right lifting oil cylinder oil inlet pipe are respectively connected with two oil return ports of the second three-way joint, and the other ends of the left lifting oil cylinder oil inlet pipe and the right lifting oil cylinder oil inlet pipe are respectively connected with oil inlets of the left lifting oil cylinder and the right lifting oil cylinder; one end of a first oil return pipe assembly of the multi-way valve assembly is connected with an oil inlet of the first three-way joint, and the other end of the first oil return pipe assembly is connected with an oil return port of the electric control multi-way valve assembly; one end of the overflow pipe assembly of the electric control multi-way valve is respectively connected with an overflow port on the electric control multi-way valve assembly, and the other end of the overflow pipe assembly of the electric control multi-way valve is respectively connected with an oil inlet on the oil storage kettle.
4. The high horsepower wheeled tractor of claim 1, wherein: the rear working device comprises a left limiting plate assembly, a left lower pull rod assembly, a traction seat assembly, a left lifting oil cylinder assembly, an upper pull rod support welding assembly, a left lifting rod assembly, a right lifting oil cylinder assembly, an upper pull rod assembly, a right limiting plate assembly, a right lower pull rod assembly, a lower pull rod spring, a traction frame assembly, a traction rod, a rear traction rod, a first connecting pin, a locking pin shaft and a second connecting pin;
the upper pull rod support welding piece is arranged at the upper part of the rear end face of the transmission reinforced rear transmission case assembly; the upper pull rod assembly is hinged with the upper pull rod support welding piece; the right limiting plate assembly and the left limiting plate assembly are respectively arranged on the side plates of the traction frame assembly; the left lifting rod assembly and the right lifting rod assembly are respectively hinged with a left lifting arm, a right lifting arm and a left pull-down rod assembly and a right pull-down rod assembly on the reinforced rear transmission case assembly at two ends; the left lower pull rod assembly and the right lower pull rod assembly are respectively hinged on a bottom bent rod support of the reinforced rear transmission case assembly in the transmission system assembly; the left lifting oil cylinder assembly and the right lifting oil cylinder assembly are respectively hinged on left and right lifting arms and left and right oil cylinder supports of the reinforced rear transmission case assembly; two ends of the lower pull rod spring are respectively hung on the left lower pull rod assembly and the right lower pull rod assembly; the G1 surface of the traction seat assembly is arranged at the bottom of the reinforced rear transmission case assembly; the traction frame assembly is arranged on the rear end face of the reinforced rear transmission case assembly; one end of the traction rod is arranged on the traction frame assembly through a first connecting pin, and the other end of the traction rod is arranged on the traction seat assembly through a second connecting pin; the rear traction rod is arranged on the traction rod through a locking pin shaft.
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