Large power wheel tractor
Technical field
The present invention relates to a kind of wheel-tire tractor, be specifically related to a kind of large power wheel tractor.
Background technology
The wheel-tire tractor of domestic present appearance comprises the large tractor more than 80 horsepowers, and its complete machine structure arrangement form is traditional unit assembly form basically.This is a kind of version of maturation, but tangible unsatisfactory part is also arranged, and mainly be: one, maintainability is poor, must break complete machine during the major part maintenance and just can carry out; Two, organization of production complexity, work capacity is big especially; Equipment funds have high input, and investment is long return period; Three, be difficult to make full use of society and go up existing abundant device resource, retrained the development of self; Four, be difficult to enlarge the field of application of existing trac..We have noticed that since the nineties in last century, the sale proportion of external (particularly western countries) large tractors (more than the 89kW) is increasing, is the gesture of growth year by year.
There is data to show that one of variation tendency of Foreign High Power wheel-tire tractor technical development is exactly half framework and pure frame structure showed increased; Adopt modern automotive diesel engine up-to-date technology; The application of trac. constantly enlarges.
" high threshold " state of the art of above-mentioned domestic large power wheel tractor has fettered the fast development of China's large power wheel tractor to a certain extent.
According to our existence conditions, enter the trac. production industry and be rapidly developed, just must avoid above-mentioned " high threshold ".Utilize the affluent resources of domestic existing motor device (automobile, trac., construction machinery and equipment etc.), the mentality of designing of walking modular construction just begins germinating and ripe gradually.
The modular design of employing on the unitized frame basis both had been fit to China's national situation, helped the development of China's large power wheel tractor, also met international large power wheel tractor technology trends.
Summary of the invention
The purpose of this invention is to provide a kind of large power wheel tractor, its structural arrangement is flexible, maintainability good, help the field of application that makes full use of social resources and be convenient to enlarge trac., also meets international trac. technology trends.For reaching this purpose, the present invention has cast aside traditional wheel-tire tractor structure/design pattern, adopt a kind of new design idea, it is poor to make the present invention overcome present domestic large power wheel tractor maintainability, the organization of production complexity, shortcomings such as equipment investment is gone into greatly, and investment is long return period, and the trac. field of application is little.
The present invention realizes with following technical scheme: a kind of large power wheel tractor, comprise vehicle frame, driving engine, power-transfer clutch or hydraulic transmission parts, change speed gear box, front and back drive axle, power take-off shaft, the operator's compartment that is fixed on vehicle frame top, operator's station, car bonnet, mudwing and electrical instrumentation etc., it is characterized in that: rectangle frame by two parallel longerons and some with it the crossbeam of vertical fixing be coupled to each other and form; Front driving axle and rear driving axle are separately fixed at the downside of the front and rear portions of locomotive frame; Operator's compartment/operator's station, car bonnet and mudwing are separately fixed at the top of vehicle frame; Driving engine, power-transfer clutch or hydraulic transmission parts and change speed gear box three directly are connected into the three-in-one component of steel rigid unitary successively mutually, and three-in-one component is fixed on the middle front part upper surface of locomotive frame; Intermediate box, auxiliary gear box are separately fixed on the upper surface, middle part of locomotive frame; Final gearbox is fixed on the rear end of vehicle frame.
The auxiliary gear box power taking mouth of described driving engine connects with the power intake of intermediate box by transmission shaft, and the clutch end of intermediate box connects with the power intake of final gearbox by transmission shaft, in power take-off shaft is installed on the final gearbox;
The clutch end of described change speed gear box connects with the power intake of auxiliary gear box by transmission shaft; The front and back clutch end of auxiliary gear box connects with front driving axle by transmission shaft respectively, connects with rear driving axle by transmission shaft.
Clamp shock absorber or vibration isolation rubber between " three-in-one " assembly that described driving engine, power-transfer clutch or hydraulic transmission parts and change speed gear box three form and the frame; Clamp damping element between auxiliary gear box and the frame; Clamp damping element between operator's compartment/operator's station frame.
Described transmission shaft is the transmission shaft of band universal-joint.
The advantage of large power wheel tractor structure of the present invention, just the characteristics of its key are following three aspects: (1) unit frame is as base part, the high good rigidly of intensity, each system averages of trac. is not installed on the vehicle frame, and dismounting is easy to maintenance; (2) power system, driving system, hydraulic efficiency pressure system (comprising hydraulic system of working and steering hydraulic system), power output system, brake system etc. all adopt modular construction, utilize the existing equipment of professional fabrication shop just can produce, needn't drop into substantial contribution and buy trac. production specialized equipment, set up each related system regularly according to machine requirement; (3) the takeoff output shaft transmission system is changed the box-like trac. of traditional group and is drawn the mode of transmission shaft from rear axle box, promptly is commonly called as the structure that machine " belly " lining puts and becomes from driving engine to draw power through transmission shaft warp → intermediate box → the pass to such drive mechanism of final gearbox of transmission shaft → interior dress power take-off shaft.That is to say, the structural arrangement of power take-off shaft transmission system no longer as the box-like trac. of traditional group with main transmission in same casing, but outside the main transmission casing independent separately the layout.Be commonly called as structure, be convenient to expand the field of application of trac. for machine " external " transmission.(4) because the present invention adopts modular design/assembly technique, make full use of the components/systems of the maturation of professional fabrication shop such as domestic existing automobile, construction machinery and equipment, trac. production, needn't drop into substantial contribution voluntarily and buy trac. production specialized equipment, so can guarantee that not only the properties of product stabilised quality is reliable, and good economy performance.
Description of drawings
Below in conjunction with accompanying drawing the present invention being sent out the specific embodiment is further described.
Accompanying drawing is the structural representation of large power wheel tractor of the present invention.
Among the figure: 1, vehicle frame, 2, driving engine, 3, power-transfer clutch or hydraulic transmission parts, 4, change speed gear box, 5, transmission shaft, 6, intermediate box, 7, auxiliary gear box, 8, final gearbox, 9, power take-off shaft, 10, rear driving axle, 11, transmission shaft, 12, transmission shaft, 13, transmission shaft, 14, transmission shaft, 15, front driving axle, 16, three-in-one component.
The specific embodiment
As shown in drawings:
One, unit frame 1 is a steel construction piece, being the steel longeron of flute profile and some crossbeams or horizontal muscle by 2 two sections is connected and fixed and forms, have enough intensity and stiffness, several big major part on the trac. respectively from top or below be connected with its installation.This part is simple in structure, and is easy to make, and investment of production equipment is little.
Two, driving engine 2 adopts common automobile-used or industrial diesel engine, function admirable, good economy performance.
Three, the car load main transmission is made up of power-transfer clutch or hydraulic transmission parts 3, change-speed box 4, auxiliary gear box 7, rear driving axle 10 and front driving axle 15, transmission shaft 14 and 12.
As shown in drawings, the main transmission of large power wheel tractor of the present invention is realized with following mode:
1, driving engine 2 and power-transfer clutch or hydraulic transmission parts 3 and change speed gear box 4 connect into " three-in-one " assembly 16 of steel rigid unitary firmly, are installed in the first half top of vehicle frame 1, link together with vehicle frame 1.Dress shock absorber or vibration isolation rubber piece between " three-in-one " assembly 16 and the vehicle frame 1, in order to slow down the vibration of " three-in-one " assembly 16---driving engine and change speed gear box are directly to bear the vibration that causes on ground in traditional sectional construction.Avoided that on the go driving engine and transmission gearbox directly bear because the rough and uneven in surface vibration damage that causes in ground in traditional trac..
2, auxiliary gear box 7 is installed on the last plane of postmedian of vehicle frame 1, clamps damping element between its mounting bracket and the vehicle frame 1, to alleviate the vibration of auxiliary gear box 7.Clamp dampening assembly between operator's compartment/operating console and the frame, make the more comfortable safety of driving.
3, front driving axle 15 and rear driving axle 10 are contained in respectively on the lower surface of vehicle frame 1 front and back ends, directly link to each other with vehicle frame with bolt.
The power of driving engine directly is transferred to the input end of change speed gear box 4 by the power of driving engine 2 by power-transfer clutch or hydraulic transmission parts 3, connects with transmission shaft 13 between change speed gear box 4 and the auxiliary gear box 7 and transmits power on the auxiliary gear box 7; Respectively by 14,12 transmissions of cross joint universal drive shaft, finally move between auxiliary gear box 7 and front driving axle 15 and the rear driving axle 10 by front driving axle 15 and rear driving axle 10 drive wheels.Transmission shaft 13,14,12 has guaranteed the steady transmission between the drive disk assembly of differing heights for the transmission shaft of band universal-joint.
4, the most of parts of driving system adopt on the market automobile or the engineering mechanical components of the maturation of batch manufacturing, not only stable performance reliable in quality, and good economy performance.
Two or four, the takeoff output shaft transmission system is made up of intermediate box 6, final gearbox 8, holder power take-off shaft 9, transmission shaft 5 and 11.
As shown in drawings, realize with following mode at the takeoff output shaft transmission system of large power wheel tractor of the present invention:
1, intermediate box 6 is fixed on the last plane of vehicle frame 1.
2, final gearbox 8 is fixed on the aft end face of vehicle frame 1.
Power output system is made up of intermediate box 6, final gearbox 8 and transmission shaft 5,11, the power taking mouth of its power from the power of driving engine 2 from the driving engine auxiliary gear box reaches intermediate box 6 through cross joint universal drive shaft 5 (leading portion), reach final gearbox 8 by cross joint universal drive shaft 11 (back segment) again, form final power by being fixed at last by power take-off shaft interior on the final gearbox 89 outputs.According to the difference of driving machinery, change the version of power take-off shaft 9, enlarge the field of application of trac. to greatest extent, multi-use improves resource utilization.
Five, operator's compartment/operating console is contained in the last plane of the postmedian of vehicle frame 1, between they and the vehicle frame 1 dampening assembly is housed, and has improved the traveling comfort of driving.
Six, the miscellaneous part of trac., as brake system, steering hydraulic system, hydraulic system of working, operation stand, what difference the structure and the installation position connecting mode of operator's compartment, car bonnet, mudwing and electric system etc. and existing large power wheel tractor do not have, they all the approach by separately be installed on the vehicle frame 1.
Seven, each main system/parts of large power wheel tractor of the present invention, except that vehicle frame 1, operator's compartment/operating console and appearance parts such as car bonnet, mudwing, most of automobile, construction machinery and equipment and agricultural machinery parts of the maturation of batch manufacturing of adopting on the market, not only stable performance reliable in quality, and good economy performance.
In sum, the center design philosophy of large power wheel tractor of the present invention is: at the radical function that satisfies large power wheel tractor comprehensively, under the prerequisite of performance requriements, the conventional confguration that China's large power wheel tractor of freeing one's minds develops, Design Mode, the modular design of employing on the unit frame architecture basics---make full use of existing motor device and (comprise automobile, trac. and construction machinery and equipment) social resources, reduce the input of specialized equipment to greatest extent, the relevant parts of exploitation necessity simultaneously, in the hope of under the condition that guarantees product design, shorten product development cycle to greatest extent, form productive force as early as possible.