CN214875115U - Differential steering type paddy field crawler tractor - Google Patents

Abstract

A differential steering paddy field crawler tractor comprises a frame assembly, a scraper knife device, a covering part assembly, a power assembly and accessories, a steering system, a hydraulic system and working devices, a transmission device and a walking device, wherein the frame assembly, the scraper knife device, the covering part assembly, the power assembly and accessories, the steering system, the hydraulic system and working devices, the transmission device and the walking device are integrated, the structural composition of the power transmission device, the steering system, the hydraulic system and the working devices is optimized, and the differential steering paddy field crawler tractor is designed, wherein a double-acting clutch is adopted in the power transmission device, a synchronizer is adopted for gear shifting, a control rod is arranged on the side, and the operation comfort is improved; the steering variable pump takes power in front of the clutch, so that the problem that the steering is lost when the clutch is stepped is solved; the scheme also has the advantages of reasonable arrangement of the whole machine and multiple functions, can realize multiple operations, enlarges the use range of the whole machine and improves the user income.

Description

Differential steering type paddy field crawler tractor

Technical Field

The utility model relates to a crawler tractor technical field specifically is a differential steering type paddy field crawler tractor.

Background

At present, the seeding and harvesting mechanization degree of paddy fields in China is high, the bottleneck of paddy field operation lies in farming, and users mainly adopt walking tractors, animal power or wheel tractors for operation for a long time. The walking tractor or animal power cultivation has low working efficiency and large labor intensity; when a large and medium wheeled tractor is continuously used for farming, mud feet of a paddy field are gradually deepened, so that difficulty is brought to subsequent rice harvesting, and the field is seriously wasted. The current market mainly has two paddy field operation type power machines: the stepless speed change type light caterpillar tractor has small ground pressure and high working efficiency, can basically adapt to paddy field operation, but has the disadvantages of low traction efficiency, poor steering reliability, low traction efficiency and single operation type; secondly, the differential steering type light crawler tractor generally adopts a single-acting clutch, the PTO can not output power independently, and the operation function is single; third, absolute priority of the steering function cannot be achieved.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a differential steering type paddy field caterpillar tractor.

The utility model adopts the technical proposal that: a differential steering paddy field crawler tractor comprises a frame assembly A, a scraper knife device B, a covering part assembly C, a power assembly and accessories D, a steering system E, a hydraulic system and working device F, a transmission device G and a traveling device H,

the transmission device G comprises a power output shaft, a clutch, an auxiliary clutch rocker arm, an auxiliary clutch operating flexible shaft, a gearbox assembly, a rear axle, a brake assembly, a power output assembly and a speed changing operating mechanism, wherein the front end of the power output shaft is fixed in flywheels of the power assembly and a diesel engine assembly of the accessory D; the clutch is connected with the power assembly and the rear end of the flywheel of the diesel engine assembly of the accessory D; the auxiliary clutch rocker is connected with the clutch through a shifting fork; the front end of the gearbox assembly is connected with the power assembly and the diesel engine assembly of the accessory D, and the rear end of the gearbox assembly is connected with a rear axle; the brake assembly is arranged on two sides of the rear axle through a connecting piece, the power output assembly is arranged on the rear part of the rear axle through a connecting piece, the speed change control mechanism is connected with the power output assembly through a shifting fork, the power output by the power assembly and the accessory D is divided into two paths, and one path of power is transmitted to driving wheels on two sides through the gearbox assembly and the rear axle; and in addition, one path of power is transmitted to the power output shaft through the power output assembly to drive other operation machines.

As a preferred scheme, a power output shaft operating handle, a main speed change operating handle, an auxiliary speed change operating handle, a retrograde gear operating handle, a parking brake, a brake pedal and a main clutch pedal are further arranged in the transmission device G, and the power output shaft operating handle is connected with an auxiliary clutch rocker arm through an auxiliary clutch operating flexible shaft; the main speed change control handle is connected with a main speed change shifting lever of the gearbox assembly through a pin shaft; the auxiliary speed change control handle is connected with an auxiliary speed change deflector rod of the gearbox assembly through a pin shaft; the control handle of the reverse driving device, the parking brake, the brake pedal and the main clutch pedal are respectively arranged in a cab assembly of the covering component assembly C.

As a preferred scheme, the steering system E comprises a hydraulic oil radiator, a radiator oil inlet pipe, a radiator oil return pipe, a pump oil discharge pipe, an oil suction pipe, a pump, a motor oil discharge pipe, a motor, a steering gear oil suction pipe, a steering oil cylinder, a steering wheel angle adjuster, a steering gear, a steering oil pipe, a steering wheel mounting bracket and a steering wheel, wherein the hydraulic oil radiator is fixed on the power assembly and the radiator bracket of the accessory D through connecting pieces, is connected with oil discharge ports of the pump and the motor through the radiator oil inlet pipe, and is connected with a hydraulic oil tank of the hydraulic system and a hydraulic oil tank of the working device F through the radiator oil return pipe; two ends of the pump-to-motor oil pipe and the motor-to-pump oil pipe are respectively connected with oil inlet and oil return ports of the pump and the motor; the pump is arranged on the power assembly and the diesel engine assembly of the accessory D and is connected with the hydraulic system and the hydraulic oil tank of the working device F through a pump oil pumping pipe; the motor is mounted on the rear axle of the transmission G.

As a preferred scheme, the hydraulic system and the working device F comprise a bulldozing lifting oil pipe, a bulldozing descending oil pipe, a gear pump, an oil filter, a hydraulic oil tank, a shovel blade operating handle, a hydraulic output operating handle, a suspension operating handle, a hydraulic valve block assembly, an upper pull rod, a lifter support assembly, a lifting shaft, an outer lifting arm, a traction plate, a lifting rod, a traction card, a lower pull rod, a lifting oil cylinder and a limiting chain;

the bulldozing lifting oil pipe is connected with a scraper knife lifting oil pipe of the scraper knife device B; the bulldozing descending oil pipe is connected with a scraper knife descending oil pipe of the scraper knife device B; the gear pump is connected to the power assembly and the gear chamber of the diesel engine assembly of the accessory D through screws; one end of an oil inlet pipe of the gear pump is connected with the gear pump, and the other end of the oil inlet pipe of the gear pump is connected with an oil filter; the oil filter is arranged at the front end of the hydraulic oil tank through a screw; the hydraulic oil tank is arranged in a mudguard of the covering part assembly C through a fastening belt; the scraper knife operating handle, the hydraulic output operating handle and the suspension operating handle are respectively connected with the hydraulic valve block assembly through a flexible shaft; the hydraulic valve block assembly is arranged on a rear wall plate of a cab assembly of the covering part assembly C through a screw and is connected with a hydraulic oil tank through an oil return pipe; the upper pull rod is arranged at the rear part of the lifter bracket assembly through a pin shaft; the lifter bracket assembly is arranged on a rear axle upper cover of the transmission device G through a screw; the lifting shaft is arranged on the lifter bracket assembly; the outer lifting arm is arranged on the lifting shaft through a spline; the traction plate is fixed at the rear end of the lower pull rod; the traction card is fixed in the middle of the traction plate through a pin shaft; the lower pull rod is fixed on the rear mounting bracket of the frame assembly A, one end of the limiting chain is fixed on a limiting chain support of the frame assembly A, and the other end of the limiting chain is connected with the lower pull rod; the upper part of the lifting oil cylinder is hinged with the outer lifting arm, and the lower part of the lifting oil cylinder is hinged with the rear mounting bracket of the frame assembly A.

As a preferred scheme, the frame assembly A comprises a scraper knife support, a main frame, a front guide tensioning device, a trolley mounting support, a traveling frame, a rear guide wheel mounting support, a rear mounting support, a limiting chain support, a cross beam support, a transmission system maintenance auxiliary support and a diesel engine mounting support;

the scraper knife support is welded on the outer side surface of the front end of the main frame; the front guide tensioning device is welded on the outer side surface of the front end of the travelling crane frame; the trolley mounting bracket is welded below the travelling crane frame; the vehicle ladder support is welded on the traveling crane frame; the traveling crane frame is welded on the main frame through three inclined struts; the rear guide wheel mounting bracket is welded on the rear end surface of the traveling crane frame; the rear mounting bracket is fixed at the rear part of the main frame through a screw; the limiting chain support is welded at the back of the main frame; the side plates are fixed on the side surface of the main frame through screws; the beam support is welded in the middle of the main frame; the lower mudguard is fixed below the front end of the main frame through a screw; the diesel engine mounting support is welded on the inner side face of the front end of the main frame; the wind shield is fixed at the front end of the main frame through a screw; the lower hood is fixed at the front end of the main frame through screws.

As a preferred scheme, the scraper knife device B comprises a scraper knife assembly, an oil cylinder, a scraper knife descending oil pipe and a scraper knife lifting oil pipe;

the scraper knife assembly is connected to a scraper knife support of the frame assembly A through a screw; two ends of the oil cylinder are hinged with the scraper knife assembly through a pin shaft; one end of the scraper knife descending oil pipe is connected with an oil inlet of the oil cylinder, and the other end of the scraper knife descending oil pipe is connected with an oil return port of the control valve block; one end of the scraper knife lifting oil pipe is connected with an oil return port of the oil cylinder, and the other end of the scraper knife lifting oil pipe is connected with a control pipeline of the control valve block.

Preferably, the cover assembly C comprises a signboard frame, a hood lock, a hood side plate, a side plate bracket, a front support and a cab assembly;

the number plate frame is fixed at the front end of the hood through screws; the hood lock is fixed inside the front end of the hood through a screw; the hood is fixed on the power assembly and the diesel engine assembly of the accessory D through screws; the hood side plates are fixed on the two sides of the hood through side plate brackets; the front support is fixed on two sides of a gearbox assembly of the transmission device G through screws; the rear support is fixed to the end of the transmission G by screws.

Preferably, the power assembly and the accessories D comprise an air filter, an intercooler, a radiator bracket, a radiator seal, a diesel engine bracket, a diesel engine assembly, a diesel engine oil inlet and return pipe, a fuel tank, a fastening belt, a hand throttle and a silencer;

the air filter and the intercooler are arranged on the radiator bracket through screws; the air filter is connected with an air inlet of the diesel engine assembly through an air inlet pipe; the intercooler is connected with an air inlet of the diesel engine assembly through a pipeline; the radiator bracket is fixed at the front end of the frame assembly A through screws and is connected with a water inlet and a water outlet of the diesel engine assembly through pipelines; the radiator is sealed and fixed around the radiator through screws; the diesel engine assembly is arranged on the frame assembly A through a diesel engine bracket; the fuel tank is arranged in a mudguard of the covering part assembly C through a fastening belt and is connected with an oil inlet and an oil return port of the diesel engine assembly through an oil inlet and return pipe of the diesel engine; the hand throttle is fixed in the cab assembly of the cover assembly C; the silencer is connected with the exhaust port of the diesel engine assembly through an exhaust pipe.

Preferably, the walking device H comprises a front guide wheel, an elastic tensioning device, a thrust wheel, a balance trolley, a rubber track, a trolley shaft and a rear guide wheel;

the front guide wheel is arranged at the front end of the elastic tensioning device; the rubber crawler belt is surrounded around the front guide wheel, the thrust wheel, the rear guide wheel and the driving wheel of the transmission device G; the thrust wheel is arranged at the lower part of the travelling rack of the frame assembly A; the balance trolley is arranged in a trolley mounting bracket of the frame assembly A through a trolley shaft; the rear guide wheel is connected to the rear end of the travelling frame of the frame assembly A; the elastic tensioning device is arranged in the front guide tensioning device fixing device of the frame assembly A.

The utility model has the advantages that:

according to the scheme, a differential steering type paddy field crawler tractor is designed through system integration of a frame assembly, a covering part assembly, a power assembly, a steering system, a hydraulic system, a power transmission device, a walking device and the like, and the structural composition of the power transmission device, the steering system, the hydraulic system and a working device is optimized, wherein a double-acting clutch is adopted in the power transmission device, a synchronizer is adopted for gear shifting, an operating rod is arranged on the side, and the operating comfort is improved; the steering variable pump takes power in front of the clutch, so that the problem that the steering is lost when the clutch is stepped is solved; this scheme still has following advantage: firstly, the whole machine is reasonable in arrangement and multifunctional, various operations can be realized, the use range of the whole machine is enlarged, and the user income is improved; secondly, the mechanical gear shifting gearbox is reasonable in speed design and high in operating efficiency; thirdly, the walking system is arranged in a triangle, the driving wheel is high, and the tensioning device has a buffering function and small vibration; fourthly, operation arrangement is carried out according to the ergonomic requirement of the tractor, so that the operation is convenient, the steering is flexible, the operation is stable, and the work is efficient; and fifthly, the steering control mechanism is independent of the transmission device and is directly driven by the diesel engine, so that the driving is safe and reliable.

Drawings

FIG. 1 is a schematic view of the whole structure of the differential steering crawler tractor of the present invention;

FIG. 2 is a schematic structural view of the middle frame assembly of the present invention;

fig. 3 is a schematic structural view of the middle blade device of the present invention;

fig. 4 is a schematic structural diagram of the middle covering component assembly of the present invention;

FIG. 5 is a schematic structural view of a power assembly and accessories of the present invention;

fig. 6 is a schematic structural view of a steering system according to the present invention;

FIG. 7 is a schematic structural diagram of a hydraulic system and a working device according to the present invention;

fig. 8 is a schematic structural view of the transmission device of the present invention;

fig. 9 is a schematic structural view of the middle walking device of the present invention.

Reference numerals: A. a frame assembly; 1. a scraper knife support; 2. a main frame; 3. a front guide tensioner; 4. a trolley mounting bracket; 5. supporting the vehicle ladder; 6. a traveling frame; 7. a rear guide wheel mounting bracket; 8. a rear mounting bracket; 9. a limiting chain support; 10. a side plate; 11. a beam support; 12. a drive train maintenance auxiliary support; 13. a lower fender; 14. a diesel engine mounting support; 15. a wind deflector; 16. a lower hood;

B. a blade device; 17. a blade assembly; 18. a pin shaft; 19. an oil cylinder; 20. the scraper knife descends the oil pipe; 21. lifting the oil pipe by a scraper knife;

C. a cover assembly; 22. a number plate frame; 23. a hood lock; 24. a hood; 25. a hood side panel; 26. a side plate bracket; 27. a front support; 28. getting on the vehicle ladder; 29. getting off the vehicle ladder; 30. a cab assembly; 31. a fender; 32. rear support; 33. a rear view mirror; 34. a lamp holder;

D. a powertrain and accessories; 35. air filtering; 36. an intercooler; 37. a heat sink; 38. a radiator support; 39. sealing the radiator; 40. a diesel engine mount; 41. a diesel engine assembly (an air inlet 41-1, an air outlet 41-2, a water inlet 41-3, a water outlet 41-4, an oil inlet 41-5 and an oil return 41-6); 42. an oil inlet and return pipe of the diesel engine; 43. a fuel tank; 44. a fastening tape; 45. a hand throttle; 46. a muffler;

E. a steering control mechanism; 47. a hydraulic oil radiator; 48. an oil inlet pipe of the radiator; 49. a radiator oil return pipe; 50. pump to motor oil line; 51. a pump drain pipe; 52. motor to pump oil pipe; 53. an oil suction pipe; 54. a pump; 55. a motor oil drain pipe; 56. a motor; 57. a diverter oil suction pipe; 58. a steering cylinder; 59. a steering wheel angle adjuster; 60. a diverter; 61. a steering oil pipe; 62. a steering wheel mounting bracket; 63. a steering wheel;

F. a hydraulic system and a working device; 64. bulldozing the lifting oil pipe; 65. pushing a soil and lowering an oil pipe; 66. a gear pump; 67. an oil inlet pipe of the gear pump; 68. an oil filter; 69. a hydraulic oil tank; 70. a fastening tape; 71. a blade operating handle; 72. a hydraulic output control handle; 73. hanging a control handle; 74. an oil return pipe; 75. a hydraulic valve block assembly; 76. an upper pull rod; 77. a riser mount assembly; 78. a lift shaft; 79. an outer lift arm; 80. a traction plate; 81. a lifting bar; 82. a traction card; 83. a lower pull rod; 84. lifting the oil cylinder; 85. a limiting rod;

G. a transmission device; 86. a power take-off shaft; 87. a clutch; 88. an auxiliary clutch rocker arm; 89. the auxiliary clutch operates the flexible shaft; 90. a gearbox assembly; 91. a rear axle; 92. a brake assembly; 93. a terminal end; 94. a drive wheel; 95. a power take-off assembly; 96. a power output shaft shield; 97. a speed change operating mechanism; 98. a power output shaft operating handle; 99. a main shift operating handle; 100. an auxiliary shift operating handle; 101. an inverter operating handle; 102. parking and braking; 103. a brake pedal; 104. a main clutch pedal;

H. a traveling device; 105. a front guide wheel; 106. an elastic tensioning device; 107. a thrust wheel; 108. a balance trolley; 109. a rubber track; 110. a bogie shaft; 111. and a rear guide wheel.

Detailed Description

The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

It should be noted that: unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of the words "a," "an," or "the" and similar referents in the specification and claims of the present application does not imply a limitation of quantity, but rather indicates the presence of at least one. The word "comprise" or "comprises", and the like, indicates that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, but does not exclude other elements or items.

The installation positions and connection relationships of the components in this embodiment are described in detail below with reference to fig. 1 to 9:

as shown in fig. 1, a differential steering paddy field crawler tractor comprises a frame assembly a, a scraper device B, a covering part assembly C, a power assembly and accessories D, a steering system E, a hydraulic system and working device F, a transmission device G and a traveling device H, wherein the frame assembly a is a foundation of the whole tractor, and other parts are directly or indirectly fixed on a frame; a scraper knife assembly 17 of the scraper knife device B is fixed on a scraper knife support 1 of the frame assembly A through screws, and a scraper knife descending oil pipe 20 and a scraper knife lifting oil pipe 21 are respectively connected with a hydraulic system and a bulldozing descending oil pipe 65 and a bulldozing lifting oil pipe 64 of the working device F to provide scraper knife lifting power; the hood 25 of the covering component assembly C is fixed on the power assembly and the diesel engine assembly 41 of the accessory D, the cab assembly 30 is fixed on the gearbox assembly 90 and the tail end 93 of the transmission device G, and the lower ladder 29 is fixed on the ladder support 5 of the frame assembly A; the diesel engine assembly 41 of the power assembly and the accessory D is fixed on the diesel engine mounting support 14 of the frame assembly A, the intercooler 36 and the radiator 37 are fixed at the front end of the frame assembly A through the radiator support 38, and the silencer 46 is fixed in the middle of the frame assembly A. The hydraulic oil radiator 47 of the steering system E is fixed on the radiator support 38, the pump 54 is fixed on the diesel engine assembly 41 of the power assembly and the accessory D, the motor 56 is fixed on the rear axle 91 of the transmission device G, and the steering wheel 63 is arranged in the instrument cover of the cover assembly C through the steering wheel mounting support 62; the gear pump 66 of the hydraulic system and working device F is connected with the gear pump flange of the diesel engine assembly 41 of the power assembly and accessory D, the lifter bracket assembly 77 is connected with the shell of the rear axle 91 of the transmission device G, the suspension rod piece is connected with the rear mounting bracket 8 of the frame assembly A, the hydraulic oil tank 69 is fixed in the mudguard 31 of the covering part assembly C, the hydraulic valve block assembly 75 is fixed behind the cab assembly 30 of the covering part assembly C, and the hydraulic system and the working device are connected by the oil pipe; the transmission assembly 90 of the transmission device G is connected to the power assembly and the diesel engine assembly 41 of the accessory D, and the rear end of the transmission device G is connected to the frame assembly A through a rear axle 91. The wheel train of the walking device H is fixed on the traveling frame 6 of the frame assembly A.

In this embodiment, the frame assembly a is shown in fig. 2, and mainly includes: a scraper knife support 1; a main frame 2; a front guide tensioner 3; a trolley mounting bracket 4; a vehicle ladder support 5; a traveling frame 6; a rear guide wheel mounting bracket 7; a rear mounting bracket 8; a spacing chain support 9; a side plate 10; a beam support 11; a drive train maintenance auxiliary support 12; a lower fender 13; a diesel engine mounting support 14; a wind deflector 15; a lower hood 16.

The frame assembly A is mainly formed by welding profile steels with different specifications, the frame is a frame of the whole tractor and is responsible for integrating various parts into a whole, so that various functions of the whole tractor and the parts are realized, and the left longitudinal beam and the right longitudinal beam of the frame form the foundation of the frame assembly A; a front guide tensioning device 3, a trolley mounting bracket 4, a vehicle ladder support 5 and a rear guide wheel mounting bracket 7 are welded on the travelling crane frame 6 and are respectively used for connecting the guide device, the trolley, the vehicle ladder and the rear guide wheel; the scraper knife support 1, the limiting chain support 9, the transmission system maintenance auxiliary support 12 and the diesel engine mounting support 14 are welded at each position on the main frame 2; the two traveling frames 6 are respectively welded on the left side and the right side of the main frame 2 to provide support for a traveling system; the limiting chain support 9 is welded at the rear part of the main frame 2 and is used for connecting a hydraulic system and a limiting chain 85 of the working device F and limiting the swing of a lower pull rod 83 of the hydraulic system and the working device F; the side plates 10 are fixed on two sides of the main frame 2 to provide protection for a transmission and electric system; 2 diesel engine mounting supports 14 at the front part of the frame are used for fixing a power assembly and a diesel engine assembly 41 of an accessory D; the auxiliary support 12 for maintaining the transmission system is used for supporting the transmission device G when the diesel engine is maintained; the rear mounting bracket 8 is arranged at the rear part of the main frame 2 and is used for fixing a rear axle 91 of a transmission device G, a hydraulic system and a lower pull rod 83 of a working device F; the lower mudguard 13 is arranged at the front end of the main frame 2 to prevent muddy water from splashing to the diesel engine; the wind shield 15 is arranged at the front end of the main frame 2 to prevent hot air from flowing back; the lower hood 16 is mounted to the front end of the main frame 2 and provides support for a hood 25 of the cover assembly C.

In this embodiment, as shown in fig. 3, the scraper device B mainly includes: a blade assembly 17; a pin 18; an oil cylinder 19; the scraper knife descends the oil pipe 20; the blade lifts the oil pipe 21.

The scraper knife assembly 17 is arranged on the main frame 2 of the frame assembly A; two ends of the oil cylinder 20 are hinged with the scraper knife assembly 17 through a pin shaft 18; one end of the scraper knife descending oil pipe 20 is connected with an oil inlet of the oil cylinder 20, and the other end of the scraper knife descending oil pipe is connected with an oil return port of the operating valve block; one end of the scraper lifting oil pipe 21 is connected with an oil return opening of the oil cylinder 20, the other end of the scraper lifting oil pipe is connected with a control pipeline of the control valve block, a scraper control handle 71 of the hydraulic system and the working device F is pulled forwards or backwards, oil in the hydraulic system is controlled to flow into the scraper lifting oil pipe 21 or flow out of the scraper descending oil pipe 20, and then the oil cylinder 19 is controlled to stretch out and draw back, so that the lifting or descending action of the scraper is realized.

In this embodiment, as shown in fig. 4, the cover assembly C mainly includes: a number plate frame 22; a hood lock 23; a hood 24; a hood side panel 25; a side plate bracket 26; a front support 27; an upper vehicle ladder 28; a get-off ladder 29; a cab assembly 30; a fender 31; a rear support 32; a rear view mirror 33; a lamp holder 34.

Wherein, the number plate frame 22 is fixed at the front end of the hood 24 through screws; the hood 24 is hinged on the power assembly and the diesel engine assembly 41 of the accessory D through screws, so that the protection is provided for the diesel engine, the support is provided for the lamp, the attractive effect is achieved, and the opening and closing of the lower part are controlled through the hood lock 23; the hood side plates 25 are fixed on both sides of the hood 24 by the side plate brackets 26, and can effectively prevent the muddy water from turning up.

The cab assembly 30 is arranged on a gearbox assembly 90 and a rear axle 91 of the transmission device G through a front support 27 and a rear support 32, and the middles of the cab assembly and the rear axle are connected by adopting a shock absorber, so that a comfortable environment is provided for a driver, and meanwhile, support is provided for internal operation; the upper ladder 28 is fixed at the lower part of the cab assembly 30, and the lower ladder 29 is fixed at the side surface of the travelling crane frame 6 of the frame assembly A, so that convenience is provided for a driver to go up and down; the two mud guards 31 are respectively arranged at the left side and the right side of the cab assembly 30, and play the roles of protecting internal parts and beautifying; the two-sided rearview mirrors 33 are fixed on the left and right side columns of the cab assembly 30, so that a driver can conveniently observe the rear condition of the vehicle; the lamp brackets 34 are fixed to left and right side pillars of the cab assembly 30 for mounting the lamp.

In this embodiment, the power assembly and the accessory D are shown in fig. 5, and mainly include: an air filter 35; an intercooler 36; a heat sink 37; a radiator support 38; a heat sink seal 39; a diesel engine mount 40; a diesel engine assembly 41; an air inlet 41-1; an exhaust port 41-2; a water inlet 41-3; a water outlet 41-4; an oil inlet 41-5; an oil return port 41-6; diesel engine oil inlet and return pipes 42; a fuel tank 43; a fastening tape 44; a hand throttle 45; a muffler 46. Wherein, the air filter 35 and the intercooler 36 are mounted on the radiator support 38 through screws; the air filter 35 is connected with an air inlet 41-1 of the diesel engine assembly 41 through an air inlet pipe; the intercooler 36 is connected with an air inlet 41-1 of the diesel engine assembly 41 through a pipeline; the radiator support 38 is fixed at the front end of the frame assembly A through screws and is connected with a water inlet 41-3 and a water outlet 41-4 of a diesel engine assembly 41 through pipelines; the heat sink seal 39 is fixed around the heat sink 37 by screws; the diesel engine assembly 41 is arranged on the frame assembly A through a diesel engine bracket 40; the fuel tank 43 is arranged in the mudguard 31 of the covering component assembly C through a fastening belt 44, and is connected with an oil inlet 41-5 and an oil return port 41-6 of the diesel engine assembly 41 through a diesel engine oil inlet and return pipe 42; the hand throttle 45 is fixed in the cab assembly 30 of the cover assembly C; the muffler 46 is connected with the exhaust port 41-2 of the diesel engine assembly 41 through an exhaust pipe and is fixed on the frame assembly A through a screw;

as can be seen from the above, the diesel engine assembly 41 is mounted on the frame assembly A through the diesel engine bracket 40 to provide power for the whole vehicle, and the power is transmitted to the walking system for driving walking and the power output shaft for providing power output through the transmission device. The radiator 37 cools the diesel engine assembly 41 through coolant circulation; the air filter 35 provides clean air to the diesel assembly 41; the fuel tank 43 stores fuel for the diesel engine assembly 41; the muffler 46 reduces exhaust emissions and noise of the diesel engine assembly 41; the hand throttle 45 controls the throttle size to realize power change.

In this embodiment, as shown in fig. 6, the steering system E mainly includes: a hydraulic oil radiator 47; a radiator inlet tube 48; a radiator return pipe 49; pump-to-motor oil line 50; a pump drain pipe 51; motor-to-pump oil line 52; an oil suction pipe 53; a pump 54; a motor drain 55; a motor 56; a diverter oil suction pipe 57; a steering cylinder 58; a steering wheel angle adjuster 59; a diverter 60; a steering oil pipe 61; a steering wheel mounting bracket 62 and a steering wheel 63; the hydraulic oil radiator 47 is fixed on the radiator support 38 of the power assembly and the accessory D through screws, connected with oil drainage ports of the pump 54 and the motor 56 through a radiator oil inlet pipe 48, and connected with a hydraulic system and a hydraulic oil tank 69 of the working device F through a radiator oil return pipe 49; both ends of the pump-to-motor oil pipe 50 and the motor-to-pump oil pipe 52 are connected with oil inlet and return ports of a pump 54 and a motor 56, respectively; the pump 54 is arranged on the diesel engine assembly 41 of the power assembly and the accessory D and is connected with a hydraulic system and a hydraulic oil tank 69 of the working device F through a pumping oil pipe 53; the motor 56 is mounted on the rear axle 91 of the transmission G.

As can be seen from the above, the hydraulic oil radiator 47 is connected to the hydraulic system through a pipeline to radiate the system, so as to ensure that the steering system is within a proper temperature range; the pump 54 provides power for the steering system, the hydraulic oil flow direction of the steering gear 60 is switched by rotating the steering wheel 63 clockwise or anticlockwise, the steering oil cylinder 58 is pushed to control the flow direction of the pump 54, the forward and reverse rotation of the motor 56 is realized through the hydraulic flow from the pump to the motor oil pipe 50 and from the motor to the pump oil pipe 52, the tail end 93 of the transmission device G is further driven, the left crawler belt and the right crawler belt generate speed difference, and the steering of the whole machine is realized.

In this embodiment, the hydraulic system and the working device F are shown in fig. 7, and mainly include: the dozer lift oil pipe 64; a dozer drop tube 65; a gear pump 66; a gear pump oil inlet pipe 67; an oil filter 68; a hydraulic oil tank 69; a fastening tape 70; a blade control handle 71; a hydraulic output operating handle 72; a suspension manipulation handle 73; an oil return pipe 74; a hydraulic valve block assembly 75; an upper pull rod 76; a lifter bracket assembly 77; a lift shaft 78; an outer lift arm 79; a traction plate 80; a lift lever 81; a tow card 82; a lower pull rod 83; a lift cylinder 84 and a stopper chain 85; wherein the dozer lift oil pipe 64 is connected with the blade lift oil pipe 21 of the blade device B; the dozer oil dropping pipe 65 is connected with the blade oil dropping pipe 20 of the blade device B; the gear pump 66 is connected to the power assembly and the gear chamber of the diesel engine assembly 41 of the accessory D through screws; one end of a gear pump oil inlet pipe 67 is connected with the gear pump 66, and the other end is connected with an oil filter 68; an oil filter 68 is mounted on the front end of the hydraulic oil tank 69 by screws; the hydraulic oil tank 69 is mounted in the fender 31 of the cover assembly C by a fastening tape 70; the shovel blade control handle 71, the hydraulic output control handle 72 and the suspension control handle 73 are respectively connected with the hydraulic valve block assembly 75 through flexible shafts; the hydraulic valve block assembly 75 is mounted on the rear wall plate of the cab assembly 30 of the cover assembly C through screws and is connected with the hydraulic oil tank 69 through an oil return pipe 74; the upper pull rod 76 is arranged at the rear part of the lifter bracket assembly 77 through a pin shaft; the lifter bracket assembly 77 is mounted on the upper cover of the rear axle 91 of the transmission device G through screws; the lift shaft 78 is mounted on the lifter bracket assembly 77; an outer lift arm 79 is splined to the lift shaft 78; the traction plate 80 is fixed at the rear end of the lower pull rod 83; the traction card 82 is fixed in the middle of the traction plate 80 through a pin shaft; the lower pull rod 83 is fixed on the rear mounting bracket 8 of the frame assembly A, one end of the limiting chain 85 is fixed on the limiting chain support 9 of the frame assembly A, and the other end is connected with the lower pull rod 83; the upper part of the lift cylinder 84 is hinged with the outer lift arm 79, and the lower part is hinged with the rear mounting bracket 8 of the frame assembly A.

As can be seen from the above, the hydraulic system converts the power of the diesel engine into the pressure of the hydraulic system by means of the gear pump 66, and controls the action of the whole hydraulic system by the hydraulic valve block assembly 75; the flow direction of hydraulic oil in the bulldozing lifting oil pipe 64 and the bulldozing descending oil pipe 65 is controlled by operating the shovel blade control handle 71, so that the bulldozing operation is realized; the hydraulic output control handle 72 is controlled to control the flow direction of hydraulic oil in the hydraulic output oil pipe, so that the hydraulic output function is realized; by operating the suspension control handle 73, the flow direction of hydraulic oil in the lifting oil cylinder 84 is controlled, so that the piston rod is driven to stretch, the outer lifting arm 79 is pushed to rotate around the lifting shaft 78, and the lower pull rod 83 is lifted or put down through the lifting rod 81, so that the suspension is lifted; the tension degree of the limiting chain 85 is adjusted, the lower pull rod 83 can be limited left and right, and the swinging amount of the machine tool is controlled.

In this embodiment, the transmission device G is shown in fig. 8, and mainly includes: a power take-off shaft 86; a clutch 87; an auxiliary clutch rocker arm 88; an auxiliary clutch operating flexible shaft 89; a gearbox assembly 90; a rear axle 91; a brake assembly 92; a tip 93; a drive wheel 94; a power take-off assembly 95; a power take-off shaft shield 96; a shift operating mechanism 97; a power output shaft operating handle 98; a main shift operating handle 99; a sub-transmission operating handle 100; a retrograde manipulator handle 101; a parking brake 102; a brake pedal 103 and a main clutch pedal 104; wherein, the front end of the power output shaft 86 is fixed in the flywheel of the diesel engine assembly 41 of the power assembly and the accessory D; the clutch 87 is connected with the rear end of the flywheel of the diesel engine assembly 41 of the power assembly and the accessory D; the auxiliary clutch rocker arm 88 is connected with the clutch 87 through a shifting fork; the front end of the gearbox assembly 90 is connected with the power assembly and the diesel engine assembly 41 of the accessory D, and the rear end of the gearbox assembly is connected with the rear axle 91; the brake assembly 92 is mounted on both sides of the rear axle 91 by screws; end 93 is mounted on the outside of brake assembly 92; the drive wheel 94 is connected to the end 93 by means of screws; the power take-off assembly 95 is mounted at the rear of the rear axle 91 by screws; the power take-off shaft shield 96 is mounted to the rear of the power take-off assembly 95 by screws; the speed changing control mechanism 97 is connected with the power output assembly 95 through a shifting fork; the power output shaft operating handle 98 is connected with the auxiliary clutch rocker arm 88 through the auxiliary clutch operating flexible shaft 89; the main shift operating handle 99 is connected with a main shift lever of the gearbox assembly 90 through a pin shaft; the auxiliary speed change control handle 100 is connected with an auxiliary speed change deflector rod of the gearbox assembly 90 through a pin shaft; the control handle 101 of the reverse running device is arranged on an instrument desk in the cab assembly 30 of the cover assembly C; the parking brake 102, brake pedal 103 and main clutch pedal 104 are mounted on the instrument desk framework in the cab assembly 30 of the cover assembly C.

Therefore, the transmission device G transmits the power of the power assembly and the diesel engine assembly 41 of the accessory D, and the functions of PTO power output and walking system driving are realized. Part of power of the diesel engine assembly 41 of the power assembly and the accessory D is transmitted to driving wheels 94 on two sides through a gearbox assembly 90, a rear axle 91 and a tail end 93, the driving wheels 94 are driven to rotate, and then a rubber crawler 109 of the walking device H is driven to complete a walking function; and the other part of power is transmitted to a power output shaft through a power output assembly 95, so that the working machine can be driven. The main clutch pedal 102 is stepped, and the friction plates of the clutch 87 are separated, so that the power of the diesel engine can be cut off, and the gear of a transmission system can be conveniently engaged; the transmission or the disconnection of the power transmitted by the diesel engine through the clutch 87 can be realized by operating the power output shaft and combining the separation operating handle 98; the speed change control mechanism 97 is operated to realize the switching of the rotating speed of the power output shaft; the main speed change control handle 99 is controlled, different working gears can be selected, the walking speed is adjusted, and the operation efficiency is improved; the auxiliary gear shift control handle 100 is operated to select the high and low gear positions of the gearbox to realize gear shifting; the same gear can be driven forward and backward by operating the control handle 101 of the retrograde motion device; the service braking function can be realized by stepping down the brake pedal 103; the parking brake 102 can lock the brake pedal 103, thereby realizing a parking brake function.

In this embodiment, the walking device H is shown in fig. 9, and mainly includes: a front guide wheel 105; an elastic tensioning device 106; a thrust wheel 107; a balance trolley 108; a rubber crawler 109; a carriage shaft 110; and a rear guide wheel 111.

The walking system is arranged by adopting the high position of the driving wheels, which is not only beneficial to improving the ground clearance, but also beneficial to improving the working environment of the driving wheels. Part of power of the diesel engine assembly 41 of the power assembly and the accessory D is transmitted to the driving wheels 94 at two sides through the clutch 87 and the tail end 93 of the transmission device G to drive the driving wheels 94 to rotate, so that the rubber crawler 109 is driven to complete the walking function; the thrust wheels assembled on the balance trolley 108 are used for supporting the weight of the whole machine, improving the profiling capability when the balance trolley runs on an uneven road surface and improving the ridge crossing capability of the whole machine; the tension degree of the rubber track 109 can be kept by adjusting the inclined elastic tensioning device 106, so that derailment is prevented; the rear guide wheels 111 also support, guide and prevent the rubber crawler 109 from slipping off. Compared with a horizontal tensioning device, the inclined tensioning device is more convenient to adjust, the rod piece is more reasonable in stress and is not easy to bend and deform.

It should be noted that, although the present invention has been described with reference to the above embodiments, the present invention may have other embodiments. Various modifications and changes may be made by those skilled in the art without departing from the spirit and scope of the invention, and it is intended that all such modifications and changes fall within the scope of the appended claims and their equivalents.

Claims (9)

1. The utility model provides a differential steering type paddy field track tractor, includes frame assembly A, spiller device B, covering assembly C, power assembly and annex D, a steering system E, hydraulic system and equipment F, transmission G and running gear H, its characterized in that:

the transmission device G comprises a power output shaft, a clutch, an auxiliary clutch rocker arm, an auxiliary clutch operating flexible shaft, a gearbox assembly, a rear axle, a brake assembly, a power output assembly and a speed changing operating mechanism, wherein the front end of the power output shaft is fixed in flywheels of the power assembly and a diesel engine assembly of the accessory D; the clutch is connected with the power assembly and the rear end of the flywheel of the diesel engine assembly of the accessory D; the auxiliary clutch rocker is connected with the clutch through a shifting fork; the front end of the gearbox assembly is connected with the power assembly and the diesel engine assembly of the accessory D, and the rear end of the gearbox assembly is connected with a rear axle; the brake assembly is arranged on two sides of the rear axle through a connecting piece, the power output assembly is arranged on the rear part of the rear axle through a connecting piece, the speed change control mechanism is connected with the power output assembly through a shifting fork, the power output by the power assembly and the accessory D is divided into two paths, and one path of power is transmitted to driving wheels on two sides through the gearbox assembly and the rear axle; and in addition, one path of power is transmitted to the power output shaft through the power output assembly to drive other operation machines.

2. The differential steering type paddy field crawler tractor according to claim 1, wherein: the transmission device G is also provided with a power output shaft control handle, a main speed change control handle, an auxiliary speed change control handle, a retrograde gear control handle, a parking brake, a brake pedal and a main clutch pedal, and the power output shaft control handle is connected with an auxiliary clutch rocker arm through an auxiliary clutch control flexible shaft; the main speed change control handle is connected with a main speed change shifting lever of the gearbox assembly through a pin shaft; the auxiliary speed change control handle is connected with an auxiliary speed change deflector rod of the gearbox assembly through a pin shaft; the control handle of the reverse driving device, the parking brake, the brake pedal and the main clutch pedal are respectively arranged in a cab assembly of the covering component assembly C.

3. The differential steering type paddy field crawler tractor according to claim 1, wherein: the steering system E comprises a hydraulic oil radiator, a radiator oil inlet pipe, a radiator oil return pipe, a pump oil drain pipe, an oil suction pipe, a pump, a motor oil drain pipe, a motor, a steering gear oil suction pipe, a steering oil cylinder, a steering wheel angle adjuster, a steering gear, a steering oil pipe, a steering wheel mounting bracket and a steering wheel, wherein the hydraulic oil radiator is fixed on the power assembly and the radiator bracket of the accessory D through connecting pieces, is connected with oil drain ports of the pump and the motor through the radiator oil inlet pipe, and is connected with a hydraulic system and a hydraulic oil tank of the working device F through the radiator oil return pipe; two ends of the pump-to-motor oil pipe and the motor-to-pump oil pipe are respectively connected with oil inlet and oil return ports of the pump and the motor; the pump is arranged on the power assembly and the diesel engine assembly of the accessory D and is connected with the hydraulic system and the hydraulic oil tank of the working device F through a pump oil pumping pipe; the motor is mounted on the rear axle of the transmission G.

4. The differential steering type paddy field crawler tractor according to claim 1, wherein: the hydraulic system and the working device F comprise a bulldozing lifting oil pipe, a bulldozing descending oil pipe, a gear pump, an oil filter, a hydraulic oil tank, a scraper knife operating handle, a hydraulic output operating handle, a suspension operating handle, a hydraulic valve block assembly, an upper pull rod, a lifter support assembly, a lifting shaft, an outer lifting arm, a traction plate, a lifting rod, a traction card, a lower pull rod, a lifting oil cylinder and a limiting chain;

the bulldozing lifting oil pipe is connected with a scraper knife lifting oil pipe of the scraper knife device B; the bulldozing descending oil pipe is connected with a scraper knife descending oil pipe of the scraper knife device B; the gear pump is connected to the power assembly and the gear chamber of the diesel engine assembly of the accessory D through screws; one end of an oil inlet pipe of the gear pump is connected with the gear pump, and the other end of the oil inlet pipe of the gear pump is connected with an oil filter; the oil filter is arranged at the front end of the hydraulic oil tank through a screw; the hydraulic oil tank is arranged in a mudguard of the covering part assembly C through a fastening belt; the scraper knife operating handle, the hydraulic output operating handle and the suspension operating handle are respectively connected with the hydraulic valve block assembly through a flexible shaft; the hydraulic valve block assembly is arranged on a rear wall plate of a cab assembly of the covering part assembly C through a screw and is connected with a hydraulic oil tank through an oil return pipe; the upper pull rod is arranged at the rear part of the lifter bracket assembly through a pin shaft; the lifter bracket assembly is arranged on a rear axle upper cover of the transmission device G through a screw; the lifting shaft is arranged on the lifter bracket assembly; the outer lifting arm is arranged on the lifting shaft through a spline; the traction plate is fixed at the rear end of the lower pull rod; the traction card is fixed in the middle of the traction plate through a pin shaft; the lower pull rod is fixed on the rear mounting bracket of the frame assembly A, one end of the limiting chain is fixed on a limiting chain support of the frame assembly A, and the other end of the limiting chain is connected with the lower pull rod; the upper part of the lifting oil cylinder is hinged with the outer lifting arm, and the lower part of the lifting oil cylinder is hinged with the rear mounting bracket of the frame assembly A.

5. The differential steering type paddy field crawler tractor according to claim 1, wherein: the frame assembly A comprises a scraper knife support, a main frame, a front guide tensioning device, a trolley mounting support, a travelling frame, a rear guide wheel mounting support, a rear mounting support, a limiting chain support, a cross beam support, a transmission system maintenance auxiliary support and a diesel engine mounting support;

the scraper knife support is welded on the outer side surface of the front end of the main frame; the front guide tensioning device is welded on the outer side surface of the front end of the travelling crane frame; the trolley mounting bracket is welded below the travelling crane frame; the vehicle ladder support is welded on the traveling crane frame; the traveling crane frame is welded on the main frame through three inclined struts; the rear guide wheel mounting bracket is welded on the rear end surface of the traveling crane frame; the rear mounting bracket is fixed at the rear part of the main frame through a screw; the limiting chain support is welded at the back of the main frame; the side plates are fixed on the side surface of the main frame through screws; the beam support is welded in the middle of the main frame; the lower mudguard is fixed below the front end of the main frame through a screw; the diesel engine mounting support is welded on the inner side face of the front end of the main frame; the wind shield is fixed at the front end of the main frame through a screw; the lower hood is fixed at the front end of the main frame through screws.

6. The differential steering type paddy field crawler tractor according to claim 1, wherein: the scraper knife device B comprises a scraper knife assembly, an oil cylinder, a scraper knife descending oil pipe and a scraper knife lifting oil pipe;

the scraper knife assembly is connected to a scraper knife support of the frame assembly A through a screw; two ends of the oil cylinder are hinged with the scraper knife assembly through a pin shaft; one end of the scraper knife descending oil pipe is connected with an oil inlet of the oil cylinder, and the other end of the scraper knife descending oil pipe is connected with an oil return port of the control valve block; one end of the scraper knife lifting oil pipe is connected with an oil return port of the oil cylinder, and the other end of the scraper knife lifting oil pipe is connected with a control pipeline of the control valve block.

7. The differential steering type paddy field crawler tractor according to claim 1, wherein: the cover component assembly C comprises a signboard frame, a hood lock, a hood side plate, a side plate bracket, a front support and a cab assembly;

the number plate frame is fixed at the front end of the hood through screws; the hood lock is fixed inside the front end of the hood through a screw; the hood is fixed on the power assembly and the diesel engine assembly of the accessory D through screws; the hood side plates are fixed on the two sides of the hood through side plate brackets; the front support is fixed on two sides of a gearbox assembly of the transmission device G through screws; the rear support is fixed to the end of the transmission G by screws.

8. The differential steering type paddy field crawler tractor according to claim 1, wherein: the power assembly and the accessories D comprise an air filter, an intercooler, a radiator bracket, a radiator seal, a diesel engine bracket, a diesel engine assembly, a diesel engine oil inlet and return pipe, a fuel tank, a fastening belt, a hand throttle and a silencer;

the air filter and the intercooler are arranged on the radiator bracket through screws; the air filter is connected with an air inlet of the diesel engine assembly through an air inlet pipe; the intercooler is connected with an air inlet of the diesel engine assembly through a pipeline; the radiator bracket is fixed at the front end of the frame assembly A through screws and is connected with a water inlet and a water outlet of the diesel engine assembly through pipelines; the radiator is sealed and fixed around the radiator through screws; the diesel engine assembly is arranged on the frame assembly A through a diesel engine bracket; the fuel tank is arranged in a mudguard of the covering part assembly C through a fastening belt and is connected with an oil inlet and an oil return port of the diesel engine assembly through an oil inlet and return pipe of the diesel engine; the hand throttle is fixed in the cab assembly of the cover assembly C; the silencer is connected with the exhaust port of the diesel engine assembly through an exhaust pipe.

9. The differential steering type paddy field crawler tractor according to claim 1, wherein: the walking device H comprises a front guide wheel, an elastic tensioning device, a thrust wheel, a balance trolley, a rubber crawler, a trolley shaft and a rear guide wheel;

the front guide wheel is arranged at the front end of the elastic tensioning device; the rubber crawler belt is surrounded around the front guide wheel, the thrust wheel, the rear guide wheel and the driving wheel of the transmission device G; the thrust wheel is arranged at the lower part of the travelling rack of the frame assembly A; the balance trolley is arranged in a trolley mounting bracket of the frame assembly A through a trolley shaft; the rear guide wheel is connected to the rear end of the travelling frame of the frame assembly A; the elastic tensioning device is arranged in the front guide tensioning device fixing device of the frame assembly A.

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