CN114454974A - High-horsepower power gear shifting tractor capable of improving damping performance - Google Patents

Abstract

A high-horsepower power gear shifting tractor capable of improving shock absorption performance 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 and a working device; the power system assembly is connected with the traveling system assembly through the shock absorber assembly, the shock absorber assembly comprises a connecting support, a bottom plate of the connecting support is connected with a frame assembly in the traveling system assembly, a connecting bolt penetrates through a top plate of the connecting support, an upper shock absorber and a lower shock absorber are installed on the connecting bolt, the upper shock absorber and the lower shock absorber are respectively located on the upper side and the lower side of the top plate of the connecting support, the top end of the connecting bolt is connected with the bottom end of the national four-engine assembly, the upper shock absorber and the lower shock absorber can be matched to absorb shock of the national four-engine assembly, shock absorption performance is improved, the situation that the power system is damaged by shock on the uneven ground is effectively avoided, the overall performance and the application range of the high-horsepower power gear shifting tractor are improved, and the application prospect is wide.

Description

High-horsepower power gear shifting tractor capable of improving damping performance

Technical Field

The invention relates to the field of power gear shifting tractors, in particular to a high-horsepower power gear shifting tractor capable of improving damping performance.

Background

The high-horsepower power gear-shifting tractor is a tractor product with power not lower than 300 horsepower, the current domestic self-produced high-horsepower power gear-shifting tractor has few operating gears, small lifting force, poor integration of the whole machine arrangement, low universality of parts, complex hydraulic system, low working efficiency, more operating system handles and control buttons, dispersed spatial arrangement, complex operation, low efficiency and poor operation comfort; the man-machine environment is poor due to the fact that a plurality of control rods are arranged. In addition, driving system's damping performance is relatively poor, can make driving system produce great vibration when the tractor goes on the ground in field unevenness, moreover because what the tractor that shifts is big horsepower power was the powerful driving system, consequently driving system structure is comparatively complicated, the volume is also great, takes place the condition that the vibrations damaged easily.

Disclosure of Invention

The invention provides a high-horsepower power gear-shifting tractor capable of improving the damping performance, and aims to solve the problem that a power system of the conventional high-horsepower power gear-shifting tractor is easy to vibrate and damage.

The technical scheme adopted by the invention for solving the technical problems is as follows: a high-horsepower power gear-shifting tractor capable of improving shock absorption performance 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 and a working device; the front end of the walking system assembly is connected with the front end of the transmission system assembly through a bolt, the rear end of the walking system assembly is connected with the left side and the right side of the rear part of the transmission system assembly through a bolt, the power system assembly is connected with the walking system assembly through a shock absorber assembly, the covering part assembly is fixed above the transmission system assembly and the walking system assembly through a support, the hydraulic system assembly is fixed above the transmission system assembly, the steering system assembly is installed on the covering part assembly, the steering system assembly is connected with the hydraulic system assembly on the transmission system assembly, and the working device is connected with the rear end of the transmission system assembly;

the bumper shock absorber assembly includes the linking bridge, and the bottom plate of linking bridge links to each other with the frame assembly in the traveling system assembly, wears to be equipped with connecting bolt on the roof of linking bridge, and last bumper shock absorber and the lower bumper shock absorber of installing of connecting bolt, go up the upper and lower both sides that bumper shock absorber and lower bumper shock absorber are located the roof of linking bridge respectively, and connecting bolt's top is connected with the bottom of four engine assemblies in state, and when four engine assemblies in state took place the vibration for the linking bridge, go up the bumper shock absorber and can cooperate with the lower bumper shock absorber and carry out the shock attenuation to four engine assemblies in state.

Preferably, the connecting bracket is a steel plate with a right-angle bending structure.

According to the technical scheme, the invention has the beneficial effects that:

the high-horsepower power gear-shifting tractor provided by the invention has the advantages of multiple operating gears, wide operating speed range and higher reliability; convenient operation, good comfort, stable operation and high working efficiency. The modularized working device has large lifting force, strong operation adaptability and high integration degree of a hydraulic system, and realizes the integration of multiple control functions. According to the invention, the shock absorber assembly is arranged between the national four-engine assembly and the traveling system assembly, when the national four-engine assembly vibrates relative to the connecting support, the upper shock absorber and the lower shock absorber can be matched to absorb shock of the national four-engine assembly, so that the shock absorption performance of the high-horsepower power gear-shifting tractor is improved, the situation that a power system is damaged by vibration on uneven ground is effectively avoided, the overall performance and the application range of the high-horsepower power gear-shifting tractor are improved, and the application prospect is wide.

Drawings

FIG. 1 is a side view of a tractor;

FIG. 2 is a top view of the tractor with the cover assembly removed;

FIG. 3 is a schematic illustration of a powertrain assembly;

FIG. 4 is a schematic view of a shock absorber assembly;

FIG. 5 is a schematic view of a walking system assembly;

FIG. 6 is a schematic illustration of a drive train assembly;

FIG. 7 is a schematic view of a cover assembly;

FIG. 8 is a schematic view of a steering system assembly;

FIG. 9 is a schematic illustration of a hydraulic system assembly;

FIG. 10 is a schematic illustration of a hydraulic system assembly;

fig. 11 is a schematic view of the working device.

The labels in the figure are: A. a powertrain assembly; B. a traveling system assembly; C. a transmission system assembly; D. a cover assembly; E. a steering system assembly; F. a hydraulic system assembly; G. a working device; 1. a post-processing assembly; 2. the national four engine assembly; 3. an air filter assembly; 4. a heat dissipation pack assembly; 5. a heat radiation fan; 6. a damper assembly; 6.1, connecting bolts; 6.2, mounting a shock absorber; 6.3, a lower shock absorber; 6.4, connecting a bracket; 7. a main fuel tank assembly; 8. a urea tank; 9. a secondary fuel tank assembly; 10. a front counterweight assembly; 11. a stylized front carriage assembly; 12. a front drive wheel assembly; 13. a front drive axle assembly; 14. a frame assembly; 15. a rear drive wheel assembly; 16. a rear counterweight assembly; 17. a front drive shaft assembly; 18. a brake system assembly with hydraulic assist; 19. a transition box assembly; 20. a modular powershift transmission assembly; 21. a rear transmission case assembly; 22. a final drive assembly; 23. a hood assembly; 24. a hood guard assembly; 25. a cab ladder assembly; 26. cab interior trim; 27. a cab suspension assembly; 28. an air conditioning and heating system; 29. a seat assembly with a multi-functional armrest; 30. a right console assembly; 31. a cab weldment assembly; 32. an instrument mask assembly; 33. a steering wheel assembly; 34. a steering column assembly; 35. a steering column mounting bracket assembly; 36. a hydraulic steering gear assembly; 37. an oil inlet pipe assembly of the steering gear; 38. a steering load feedback hose assembly; 39. a steering system return pipe assembly; 40. an oil inlet pipe assembly of a steering oil cylinder; 41. a closed automatic steering valve; 42. a steering oil cylinder right oil inlet pipe assembly; 43. a steering oil return steel pipe assembly; 44. turning to an oil inlet steel pipe assembly; 45. a steering load feedback steel pipe assembly; 46. a radiator oil return pipe assembly; 47. an oil inlet pipe assembly of the radiator; 48. a hydraulic radiator; 49. a front differential lock control hose assembly; 50. a three-axis lubrication oil pipe assembly; 51. a filter and support mounting assembly; 52. a radiator bypass valve; 53. a four-wheel drive lubricating oil pipe assembly; 54. a brake lubrication front oil pipe assembly; 55. the lifting cylinder is connected with the oil inlet and outlet pipe assembly; 56. the PTO lubricates a rear oil pipe assembly; 57. an electrically controlled multi-way valve assembly; 58. a multi-way valve oil inlet pipe assembly; 59. a multi-way valve oil return pipe assembly; 60. a shaft lubrication tube assembly; 61. the rear differential lock controls the oil pipe assembly; 62. a diverter valve block; 63. a four-wheel drive control oil pipe assembly; 64. a two-stage priority valve; 65. the reversing valve block is provided with an oil inlet pipe assembly; 66. the forward gear control oil pipe assembly; 67. a back gear control oil pipe assembly; 68. a shift valve block; 69. a pump-out oil pipe assembly; 70. a pump inlet pipe assembly; 71. a creeper gear control oil pipe assembly; 72. AMT oil inlet pipe assembly; 73. a pump drain pipe assembly; 74. a variable displacement pump; 75. the PTO controls the oil pipe assembly; 76. a left lower link assembly; 77. a lift rod assembly; 78. a left limiting plate assembly; 79. lifting the oil cylinder assembly; 80. a fifth wheel weldment; 81. lifting the left bracket assembly; 82. a left lift arm; 83. an upper tie rod support; 84. a lift shaft; 85. a right lift arm; 86. lifting the right bracket assembly; 87. an upper pull rod assembly; 88. drawing the bracket assembly; 89. a right limit plate assembly; 90. a draw bar assembly; 91. a draw pin assembly; 92. a right lower link assembly; 93. a pull-down rod tension spring.

Detailed Description

Referring to the drawings, the specific embodiments are as follows:

a high-horsepower power gear-shifting tractor comprises a power system assembly A, a traveling system assembly B, a transmission system assembly C, a covering part assembly D, a steering system assembly E, a hydraulic system assembly F and a working device G.

The walking system assembly B, the power system assembly A, the transmission system assembly C and the working device G are sequentially connected according to the advancing direction. The front end of the walking system assembly B is connected with the front end of the transmission system assembly C through a bolt, and the rear end of the walking system assembly B is connected with the left side and the right side of the rear part of the transmission system assembly C through bolts. The power system assembly A is connected with the walking system assembly B through a shock absorber. And the covering part assembly D is fixed above the transmission system assembly C and the walking system assembly B through a bracket. The hydraulic system assembly F is fixed above the transmission system assembly C. The steering system assembly E is arranged on the covering assembly D and is connected with a hydraulic system assembly F on the transmission system assembly C. The working device G is connected with the rear end of the transmission system assembly C.

The power system assembly A comprises: 1. a post-processing assembly; 2. the national four engine assembly; 3. an air filter assembly; 4. a heat dissipation pack assembly; 5. a heat radiation fan; 6. a damper assembly; 7. a primary fuel tank assembly; 8. a urea tank; 9. and a secondary fuel tank assembly.

The nationalIV engine assembly 2 is connected with aframe assembly 14 in the walking system assembly B through bolts and a shock absorber; thedamper assembly 6 comprises a connecting bolt 6.1; an upper shock absorber 6.2; lower bumper shock absorber 6.3 and linking bridge 6.4, the bottom plate of linking bridge 6.4 links to each other withframe assembly 14 in the traveling system assembly B, linking bridge 6.4 is a steel sheet that has the right angle structure of buckling, wear to be equipped with connecting bolt 6.1 on the roof of linking bridge 6.4, last bumper shock absorber 6.2 and lower bumper shock absorber 6.3 are installed to connecting bolt 6.1, go up bumper shock absorber 6.2 and lower bumper shock absorber 6.3 and be located the upper and lower both sides of the roof of linking bridge 6.4 respectively, the top of connecting bolt 6.1 is connected with the bottom of national fourengine assembly 2, when national fourengine assembly 2 takes place the vibration for linking bridge 6.4, go up bumper shock absorber 6.2 and lower bumper shock absorber 6.3 can cooperate and carry out the shock attenuation to national fourengine assembly 2. Theheat radiation fan 5 is arranged on a fan shaft of the national four-engine assembly 2; the heat dissipation package assembly 4 is arranged on a profiling typefront bracket assembly 11 in the walking system assembly B.

Theair filter assembly 3 is fixed on the upper part of the nationalIV engine assembly 2 through a bracket and is connected with a supercharger air inlet of the nationalIV engine assembly 2 through an air outlet pipe; thepost-processing assembly 1 is arranged on the upper part of the national four-engine assembly 2 and the side surface of aframe assembly 14 in the walking system assembly B through a bracket; the mainfuel tank assembly 7 is arranged on the left side of a modular powershift gearbox assembly 20 in the transmission system assembly C through a bracket; the auxiliary fuel tank assembly 9 is arranged on the right side of the modular powershift gearbox assembly 20 in the transmission system assembly C through a bracket; theurea tank 11 is fixed at the rear part of the auxiliary fuel oil tank assembly 9 through a bracket.

The walking system assembly B comprises: thefront counterweight assembly 10, the profiling typefront bracket assembly 11, the frontdriving wheel assembly 12, the frontdriving axle assembly 13, theframe assembly 14, the reardriving wheel assembly 15 and therear counterweight assembly 16.

Thefront counterweight assembly 10 is arranged at the front end of the profiling typefront bracket assembly 11; the rear end of the profiling typefront bracket assembly 11 is connected with the front end of theframe assembly 14; the frontdrive axle assembly 13 is arranged at the lower part of theframe assembly 14; the frontdriving wheel assembly 12 is arranged at the left end and the right end of the frontdriving axle assembly 13; reardrive wheel assemblies 15 are mounted to the left and right ends of thefinal drive assembly 22, andrear counterweight assemblies 16 are mounted to the web of the reardrive wheel assemblies 15.

The transmission system assembly C comprises: the hydraulic power-assisted brake system comprises a fronttransmission shaft assembly 17, abrake system assembly 18 with hydraulic power assistance, atransition box assembly 19, a modular power-shift gearbox assembly 20, a reartransmission box assembly 21 and afinal transmission assembly 22.

The rear end of thetransition box assembly 19 is connected with the front end of the modular powershift gearbox assembly 20 through a bolt; the rear end of the modularized power gear shiftinggearbox assembly 20 is connected with arear gearbox assembly 21 through a bolt; thefinal transmission assembly 22 is mounted on two sides of the reartransmission case assembly 21 through bolts; thebraking system assembly 18 with hydraulic power assistance is fixedly arranged on the front wall plate of acab welding assembly 32 in the covering part assembly D through bolts and is connected with an oil port on the transmission system assembly C through an oil pipe; the fronttransmission shaft assembly 17 is fastened to the rear end of the frontdrive axle assembly 13 and the front end of the modularpowershift transmission assembly 20 in the traveling system assembly B through bolts.

The cover assembly D includes: the multifunctional automobile cab comprises ahood assembly 23, ahood guard assembly 24, acab ladder assembly 25,cab interior 26, acab suspension assembly 27, an air conditioning andheating system 28, aseat assembly 29 with a multifunctional operating armrest, a right-sideoperating platform assembly 30, acab welding assembly 31 and aninstrument cover assembly 32.

The hood assembly 23 is respectively arranged on the upper parts of the copying type front bracket assembly 11 in the walking system assembly C and the China four-engine assembly 2 in the power system assembly A through a front bracket and a rear bracket; the hood guard plate assembly 24 is arranged on two sides of the national four-engine assembly 2 through a bracket; the instrument cover assembly 32 is fixed to the center of the front wall plate and the front part of the floor of the cab seam assembly 31 by bolts; the right control console assembly 30 is installed on the right side of the cab weldment assembly 31 through bolts; a seat assembly 29 with multifunctional operating armrests is mounted in the middle above the floor of a cab seam piece assembly 31 through bolts; the cab ladder assembly 25 is arranged on the left front side part of the floor of the cab welding part assembly 31 through bolts; the cab interior 26 is arranged inside the cab seam piece assembly 31 through a self-tapping screw; the cab suspension assembly 27 is fixedly arranged on two sides of the modular power shift gearbox assembly 20 and two sides of the rear part of the rear transmission case assembly 21 in the transmission system assembly C through bolts; the air-conditioning warm air system 29 assembly is arranged at the bottom of the cab welding part assembly 31 through bolts and is connected with an air-conditioning compressor and a water pump on the national-four engine assembly 2 in the power system assembly A through pipelines; the cab weldment assembly 31 is bolted to the cab suspension assembly 27.

The steering system assembly E includes: the steering system comprises a steering wheel assembly 33, a steering column assembly 34, a steering column mountingbracket assembly 35, a hydraulicsteering gear assembly 36, a steering gear oilinlet pipe assembly 37, a steering loadfeedback hose assembly 38, a steering system oilreturn pipe assembly 39, a steering gear-to-steering cylinder hard pipe assembly I40, a closedautomatic steering valve 41, a steering gear-to-steering cylinder hard pipe assembly II 42, a steering oil returnsteel pipe assembly 43, a steering oil inletsteel pipe assembly 44 and a steering load feedbacksteel pipe assembly 45.

The steering wheel assembly 33 is fixed at the top end of the steering column assembly 34; the steering column mounting bracket assembly 35 is fixed on the front wall plate of the cab welding assembly 31 in the cover assembly D through bolts; the steering column assembly 34 is fixed on the steering column mounting bracket assembly 35 through a bracket; the hydraulic steering gear assembly 36 is fixed at the bottom of the steering column assembly 34; one end of a steering gear oil inlet pipe assembly 37 is connected with an oil inlet of the hydraulic steering gear assembly 36, and the other end of the steering gear oil inlet pipe assembly is connected with an oil outlet of the closed automatic steering valve 41; one end of a steering load feedback hose assembly 38 is connected with the hydraulic steering gear assembly 36, and the other end is connected with an oil inlet of the closed automatic steering valve 41; the closed automatic steering valve 41 is fixed above the modular power shift gearbox assembly 20 in the transmission system assembly C through a bracket; one end of a steering oil return steel pipe assembly 43 is connected with an oil return port of the closed automatic steering valve 41, the other end of the steering oil return steel pipe assembly is connected with a filter and support mounting assembly 50 of the hydraulic system assembly F, one end of a steering oil inlet steel pipe assembly 44 is connected with the steering oil inlet hose assembly 37, the other end E1 is connected with the F1 of the double-stage priority valve 63 of the hydraulic system assembly F, one end of a steering load feedback steel pipe assembly 45 is connected with the closed automatic steering valve 41, and the other end E2 is connected with the F2 of the double-stage priority valve 63 of the hydraulic system assembly F. One end of a steering gear-to-steering oil cylinder hard pipe assembly I40 is connected with an oil outlet below the hydraulic steering gear assembly 36, and the other end of the steering gear-to-steering oil cylinder hard pipe assembly I is connected with a left oil cylinder of a front axle assembly 13 in the traveling system assembly B; one end from the steering gear to the steering oil cylinder hard pipe assembly II 42 is connected with an oil outlet above the hydraulic steering gear assembly 36, and the other end is connected with a right oil cylinder of a front axle assembly 13 in the walking system assembly B.

The hydraulic system assembly F includes: radiator returnoil pipe assembly 46, radiator oilinlet pipe assembly 47,hydraulic radiator 48, front differential lockcontrol hose assembly 49, three-axis lubricatingoil pipe assembly 50, filter andsupport mounting assembly 51,radiator bypass valve 52, four-wheel drive lubricatingoil pipe assembly 53, brake lubricatingoil pipe assembly 54, lift cylinder inlet and outletoil pipe assembly 55, PTO lubrication rearoil pipe assembly 56, electronic controlmulti-way valve assembly 57, multi-way valveinlet pipe assembly 58, multi-way valve returnoil pipe assembly 59, one-shaft lubricatingoil pipe assembly 60, rear differential lock controloil pipe assembly 61, reversingvalve block 62, four-wheel drive controloil pipe assembly 63, two-stage priority valve 64, reversing valve blockinlet pipe assembly 65, forward gear controloil pipe assembly 66, reverse gear controloil pipe assembly 67, gear shiftingvalve block 68, pump outletoil pipe assembly 69, pumpinlet pipe assembly 70, creeper gear controloil pipe assembly 71 and AMTinlet pipe assembly 72, Apump drain assembly 73, avariable displacement pump 74, and a PTOcontrol tubing assembly 75.

The hydraulic radiator 48 is arranged on the heat dissipation water tank assembly 4 and the intercooler assembly 5 in the power system assembly A through a bracket; one end of the radiator oil inlet pipe assembly 46 and one end of the radiator oil return pipe assembly 47 are respectively connected with an oil inlet and an oil return port on the hydraulic radiator 44, the other ends of the radiator oil inlet pipe assembly and the radiator oil return pipe assembly are respectively connected with a radiator bypass valve 52, and the radiator bypass valve 52 is arranged on the modular power shift gearbox assembly 20 in the transmission system assembly C through a bracket; one end of a front differential lock control hose assembly 49 is connected with an oil port at the rear end of a front axle assembly 13 in the traveling system assembly B, and the other end of the front differential lock control hose assembly is connected with an oil port marked with a differential lock above a reversing valve block 62; one end of a three-axis lubricating oil pipe assembly 50 is connected with a filter and support mounting assembly 51, and the other end of the three-axis lubricating oil pipe assembly is connected with a right side oil port of a modular power shift gearbox assembly 20 in a transmission assembly C; the filter and support mounting assembly 51 is connected to the right side surface of the modular power shift transmission assembly 20 in the transmission assembly C by bolts; one end of a four-wheel drive lubricating oil pipe assembly 53 is connected with an oil port below a radiator bypass valve 52, and the other end of the four-wheel drive lubricating oil pipe assembly is connected with an oil port on the left side of a modular power gear shifting gearbox assembly 20 in a transmission assembly C; one end of a brake lubricating oil pipe assembly 54 is connected with an oil port above the radiator bypass valve 52, and two oil ports at the other end are respectively connected with a left oil port and a right oil port above a rear transmission case assembly 21 in the transmission assembly C; one end of each of the two lifting cylinder oil inlet and outlet pipe assemblies 55 is respectively connected with the left side and the right side of the electric control multi-way valve assembly 57, and the other end of each of the two lifting cylinder oil inlet and outlet pipe assemblies is respectively connected with the left lifting cylinder assembly 79 and the right lifting cylinder assembly 79 in the hydraulic system assembly F; one end of a PTO lubrication rear oil pipe assembly 56 is connected with an oil port above the rear side of the filter and support mounting assembly 51, and the other end is connected with a PTO shell at the rear end of the rear transmission case assembly 21 in the transmission assembly C; the electric control multi-way valve assembly 57 is arranged above the rear transmission case assembly 21 in the transmission assembly C through a bracket; one end of the multi-way valve oil inlet pipe assembly 58 is connected with an oil inlet of the electric control multi-way valve assembly 57, and the other end is connected with an oil outlet at the left side of the two-stage priority valve 64; one end of the multi-way valve oil return pipe assembly 59 is connected with an oil return port of the electric control multi-way valve assembly 57, and the other end is connected with an oil return port above the filter and support mounting assembly 51; one end of an axial lubricating oil pipe assembly 60 is connected with an oil outlet below the radiator bypass valve 52, and the other end of the axial lubricating oil pipe assembly is connected with a front oil port on the left side of the modular power gear shifting gearbox assembly 20 in the transmission assembly C; one end of the rear differential lock control oil pipe assembly 61 is connected with an oil port at the front part above the rear transmission case assembly 21 in the transmission assembly C, and the other end is connected with an oil port above the reversing valve block 62 and marked by a differential lock; the reversing valve block 62 is installed above the front part of the rear transmission case assembly 21 in the transmission assembly C through a bolt, one end of the four-wheel drive control oil pipe assembly 63 is connected with an oil port with a four-wheel drive mark above the reversing valve block 62, and the other end of the four-wheel drive control oil pipe assembly is connected with an oil port on the side surface of the rear transmission case assembly 21 in the transmission assembly C; the two-stage priority valve 64 is mounted above the rear portion of the modular power shift transmission assembly 20 in the transmission assembly C by bolts; one end of the reversing valve block oil inlet pipe assembly 65 is connected with a front oil port on the left side of the shifting valve block 68, and the other end of the reversing valve block oil inlet pipe assembly is connected with a front oil inlet of the reversing valve block 62; one end of the forward gear control oil pipe assembly 66 is connected with the side oil port on the three axes of the modular power shift transmission assembly 20 in the transmission system assembly C, and the other end is connected with the oil port F at the bottom of the reversing valve block 62; one end of the backward shift control oil pipe assembly 67 is connected with an oil port above the three shafts of the modular power shift gearbox assembly 20 in the transmission system assembly C, and the other end is connected with an oil port R at the bottom of the reversing valve block 62; the upper front portion of the modular powershift transmission assembly 20 in the shift valve block 68 transmission system assembly C; one end of the pump-out oil pipe assembly 69 is connected with an oil port marked IN on the side surface of the two-stage priority valve 64, and the other end is connected with an oil port below the variable pump 74; one end of the pump oil inlet pipe assembly 70 is connected with an oil inlet below the variable pump 74, and the other end is connected with an oil outlet behind the filter and support mounting assembly 51; one end of the crawling gear control oil pipe assembly 71 is connected with the AMT oil inlet pipe assembly 72 and a rear oil port of a crawling gear control valve of the modular power gear shifting gearbox assembly 20 in the transmission system assembly C through a three-way joint, and the other end of the crawling gear control oil pipe assembly 71 is connected with a front oil port of the crawling gear control valve of the modular power gear shifting gearbox assembly 20 in the transmission system assembly C; one end of the AMT oil inlet pipe assembly 72 is connected with the oil port on the front right side of the reversing valve block 62, and the other end of the AMT oil inlet pipe assembly is divided into two oil ports which are respectively connected with the front oil port and the rear oil port of the AMT control valve block of the rear transmission case assembly 21 in the transmission system assembly C; one end of the pump oil drain pipe assembly 73 is connected with an oil draining opening on the upper side of the variable pump 74, and the other end of the pump driving box shell on the right side of the modular power gear shifting gearbox assembly 20 in the transmission system assembly C is connected; the variable displacement pump 74 is connected with the modular powershift gearbox assembly 20 in the transmission system assembly C by bolts; one end of the PTO control oil pipe assembly 75 is connected to an oil port on the side of the PTO housing at the rear end of the rear transmission case assembly 21 in the transmission assembly C, and the other end is connected to an oil port with a PTO mark above the directional valve block 62.

The working device G includes: the device comprises a left lowerpull rod assembly 76, a liftingrod assembly 77, a left limitingplate assembly 78, a liftingoil cylinder assembly 79, a tractionseat welding assembly 80, a leftlifting support assembly 81, aleft lifting arm 82, an upperpull rod support 83, a liftingshaft 84, aright lifting arm 85, a right liftingsupport assembly 86, an upperpull rod assembly 87, atraction support assembly 88, a right limitingplate assembly 89, atraction rod assembly 90, atraction pin assembly 91, a right lowerpull rod assembly 92 and a lower pullrod tension spring 93.

The left lower pull rod assembly 76 and the right lower pull rod assembly 92 are respectively arranged on a support at the bottom of the rear transmission case assembly 21 in the transmission system assembly C through pin shafts; the lifting rod assembly 77 is respectively arranged on the left lower pull rod assembly 76, the right lower pull rod assembly 92, the left lifting arm 82 and the right lifting arm 85 through pin shafts; the left limiting plate assembly 78 and the right limiting plate assembly 89 are respectively installed on a side plate of the traction frame assembly 88 through bolts; the two lifting oil cylinder assemblies 79 are respectively arranged on a left lifting arm, a right lifting arm, a left oil cylinder support and a right oil cylinder support of the rear transmission box assembly 21 in the transmission system assembly C through pin shafts; the traction seat welding part 80 is arranged at the bottom of the rear transmission case assembly 21 in the transmission system assembly C through bolts; the lifting left bracket assembly 81 and the lifting right bracket assembly 86 are respectively arranged at the left side and the right side of the upper part of the rear transmission case assembly 21 in the transmission system assembly C; one end of a left lifting arm 82 is connected with a left lifting support assembly 81, the middle part of the left lifting arm is connected with a lifting oil cylinder assembly 79 through a pin shaft, and the other end body of the left lifting arm is connected with a lifting rod assembly 77 through a pin shaft; the upper pull rod support 83 is connected with a PTO shell of the rear transmission case assembly 21 in the transmission system assembly C through a bolt, and two ends of the lifting shaft 84 are respectively connected with a lifting left support assembly 81 and a lifting right support assembly 86; one end of the right lifting arm 85 is connected with a lifting right bracket assembly 86, the middle part of the right lifting arm is connected with the lifting oil cylinder assembly 79 through a pin shaft, and the other end body of the right lifting arm is connected with the lifting rod assembly 77 through a pin shaft; one end of the upper pull rod assembly 87 is connected with the upper pull rod support 83 through a pin shaft; the traction bracket assembly 88 is connected with the PTO shell of the rear transmission case assembly 21 in the transmission system assembly C through a bolt; one end of the traction rod assembly 90 is connected to the traction seat welding assembly 80 through a connecting pin, and the other end of the traction rod assembly passes through the position between two transverse plates of the traction bracket assembly 88; the draw pin assembly 91 passes through the aperture of the draw bar assembly 90; two ends of the lower link spring 93 are respectively hung on the left lower link assembly 76 and the right lower link assembly 92.

The flow of hydraulic oil in the liftingoil cylinder assembly 79 is controlled by controlling the electric controlmulti-way valve assembly 57 on the hydraulic system assembly F, so that the piston rod of the lifting oil cylinder is driven to stretch, theleft lifting arm 82 and theright lifting arm 85 are driven to rotate around the liftingshaft 84, the left lowerpull rod assembly 76 and the right lowerpull rod assembly 92 are driven to lift or put down by the liftingrod assembly 77, and the lifting of the hanging rod piece of the working device G is realized. Left limiting plate closespiece 78, right limiting plate closespiece 89,lower link spring 93 combined action, can control left and right spacing to leftlower link assembly 76, rightlower link assembly 92, the oscillating quantity when the control takes the machines operation. Thetraction frame assembly 88 provides a mounting support for the leftlimit plate assembly 78 and the rightlimit plate assembly 89. The working device G has a modularization function, and different system lifting capacities can be realized by adjusting the cylinder diameter of the liftingoil cylinder assembly 79, so that the working device G is suitable for tractors with different powers. Thetow bar assembly 90 may be used to drive a tow implement through atow pin assembly 91.

Claims (2)

1. The utility model provides a high horse power tractor of shifting that promotes shock attenuation performance which characterized in that: the device 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 and a working device; the front end of the walking system assembly is connected with the front end of the transmission system assembly through a bolt, the rear end of the walking system assembly is connected with the left side and the right side of the rear part of the transmission system assembly through a bolt, the power system assembly is connected with the walking system assembly through a shock absorber assembly, the covering part assembly is fixed above the transmission system assembly and the walking system assembly through a support, the hydraulic system assembly is fixed above the transmission system assembly, the steering system assembly is installed on the covering part assembly, the steering system assembly is connected with the hydraulic system assembly on the transmission system assembly, and the working device is connected with the rear end of the transmission system assembly;

the bumper shock absorber assembly includes the linking bridge, and the bottom plate of linking bridge links to each other with the frame assembly in the traveling system assembly, wears to be equipped with connecting bolt on the roof of linking bridge, and last bumper shock absorber and the lower bumper shock absorber of installing of connecting bolt, go up the upper and lower both sides that bumper shock absorber and lower bumper shock absorber are located the roof of linking bridge respectively, and connecting bolt's top is connected with the bottom of four engine assemblies in state, and when four engine assemblies in state took place the vibration for the linking bridge, go up the bumper shock absorber and can cooperate with the lower bumper shock absorber and carry out the shock attenuation to four engine assemblies in state.

2. A high horsepower powershift tractor according to claim 1, wherein: the connecting support is a steel plate with a right-angle bending structure.

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