CN201376500Y

CN201376500Y - Front-back drive hand tractor

Info

Publication number: CN201376500Y
Application number: CN200920140635U
Authority: CN
Inventors: 莫镇艳
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-26
Filing date: 2009-03-26
Publication date: 2010-01-06
Anticipated expiration: 2019-03-26

Abstract

A front-back drive hand tractor comprises a diesel engine, a clutch, an auxiliary gear shifting box, a main gear shifting box, a front drive division and combination gear box, a front and a back drive shafts, a front and a rear axles, and a front and a rear wheels. A front wheel boss of the hand tractor is mounted on a front brake hub, a mandrel which is provided with the front brake hub is hollow, a left half shaft and a right half shaft of the front axle are connected by the crossed node universal coupler on the center line of the steering knuckle of the front wheel, extend out from the hollow mandrel, and drive the wheel boss, a vehicle frame is in a front-back integral type, the front axle is provided with a shock-absorbing spring steel plate, and the front axle is suspended and mounted through using a left and a right central horizontal shaft lines as winding shafts. The front-back drive hand tractor can guarantee four wheels of a tractor to evenly bear load and contact ground, prevents a wheel carrier from suspending and slipping, and a machine damps vibration. The hand tractor has big traction force, strong bearing capability, convenient steering operation and stable vehicles.

Description

A kind of front and back drive walker tractor

Technical field

The utility model relates to a kind of agricultural mechanical field, particularly a kind of front and back driving direction disc type walker tractor.

Background technology

At present, steering wheel type walker tractor great majority are f-w-ds, though there is small part to drive front and back, but also be that front-wheel is directly installed on the axle drive shaft, and be that back-wheel drive is auxilliary based on f-w-d, the walker tractor of existing f-w-d, tractive force is low, travels on road, hill path and skids easily, and front wheel tread is narrow, the machine stationarity is poor, and wheel base is long, and turn radius is big, and turning is the headstock oscillating type, tire is easy to wear, the vehicle swing is big, and frame is split type before and after being, the whole rigidity of machine is poor.

Summary of the invention

The purpose of this utility model provides a kind of front and back and drives walker tractor, and it is difficult for skidding, and is particularly suitable for the agricultural transportation in rural slight slope and hill path.

The utility model is realized above-mentioned purpose by the following technical solutions: a kind of front and back drive walker tractor, comprise frame, diesel engine, power-transfer clutch, auxiliary gearbox, main-gear box, forerunner's deciliter gear case, the front and back transmission shaft, front and back bridge and front and back wheel, operator's compartment, railway carriage, self-unloading device, the electrical lighting indicating device, wherein, the propons of described walker tractor is independent of the diff drive-type, front wheel hub is installed on the front brake nave boss of the propons left and right sides, propons is provided with knuckle pivot pin with installation front brake nave boss mandrel and is connected, the mandrel of described installation front brake nave boss is hollow, propons left and right sides semiaxis is sentenced cross joint universal coupling at the front wheel knuckle pin center and is connected, institute's bonded assembly semiaxis passes hollow mandrel and reaches semiaxis flange drive brake hubs, described vehicle frame is the front and back integral type, and propons is connected with preceding damping spring steel plate with frame.

Described propons also with left and right sides central horizontal axis for to be installed on the propons damping spring steel plate around axis suspension.

Described auxiliary gearbox is by the changed course conical gear, and intermediate gear, driving gear and passive at a slow speed soon variable gear assembly at a slow speed soon.

But the damping spring steel plate can also left and right sides horizontal type installation of the vertical installation in front and back before described.

Outstanding effect of the present utility model is:

1, because vehicle frame adopts the front and back integral type, can reduce the traction pull header structure like this, the whole rigidity of machine is good, and safety and stability improve greatly.

2. propons is connected with the damping spring steel plate with frame, described can be with left and right sides central horizontal axis for to swing with left and right sides central horizontal axis around axle for the propons that is installed on the damping spring steel plate around axis suspension, this kind installation can guarantee the average load-bearing kiss the earth of trac. four-wheel, preventing that certain from taking turns built on stilts skids the machine damping.

3, because actuation techniques before and after adopting, at ordinary times based on back-wheel drive, road load-carrying climbing increases the forerunner, makes that the walker tractor tractive force is big, hill climbing ability is strong.

4, because turning is not the headstock swing, but the front wheel slip angle turning, turning, operation is light, vehicle is steady.

5, can use hydraulic pressure four-wheel brake structure simultaneously, driving safety.

Description of drawings

Fig. 1 is that front and back described in the utility model drive the walker tractor structural representation.

Fig. 2 is that front and back described in the utility model drive walker tractor traction avant constructional drawing

Fig. 3 is that front and back described in the utility model drive walker tractor propons supporting structure scheme drawing

Fig. 4 is that front and back described in the utility model drive walker tractor auxiliary gearbox structural representation

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further described.

Contrast Fig. 1 to Fig. 4, front and back described in the utility model drive walker tractor, by diesel engine 1, frame 2, front-wheel 3, preceding damping spring steel plate 4, propons 5, clutch spindle 6, front propeller shaft 7, main-gear box 8, main driving axle 9, forerunner's deciliter gear case 10, rear propeller shaft 11, back axle 12, trailing wheel 13, back shock-absorbing leaf spring 14, railway carriage 15, seat 16, bearing circle 17, operator's compartment 18, power-transfer clutch 19, auxiliary gearbox 20, propons semiaxis 21, front axle housing 22, cross joint universal coupling 23, knuckle pivot pin 24, mandrel 25, front brake nave boss 26, semiaxis flange 27, front wheel hub 28, front axle differential 29, propons supporting mandrel 30 constitutes.Wherein, have in the auxiliary gearbox 20 at a slow speed driving gear 31, clutch spindle 6, initiatively conical gear 33, changed course conical gear 34, intermediate gear 35, quickly gear 36 and soon at a slow speed ring gear 37 constitute.

Frame 2 is the front and back integral type, diesel engine 1 places machine foremost, cancel common walker tractor axle drive shaft directly stretches out structure from change speed gear box change speed gear box, adopt frame 2, propons 5, change speed gear box 8, the girder structure that back axle 12 separates, propons 5 is independent of the diff drive-type, it is installed on the preceding damping spring steel plate 4 with supporting mandrel 30, propons in the described supporting mandrel 30 can be swung around the left and right vehicle wheel axis, preceding damping spring steel plate 4 is installed on the frame 2, before damping spring steel plate 4 can before and after vertically installation also can about laterally install, propons 5 is provided with knuckle pivot pin 24 with installation front brake nave boss mandrel 25 and is connected, front-wheel 3 is installed on the front wheel hub 28, front wheel hub 28 is installed on the front brake nave boss 26, the mandrel 25 of described installation front brake nave boss 26 is hollow, the semiaxis 21 of front axle differential 29 takeoff outputs passes this hollow core shaft and reaches semiaxis flange 27 drive front brake nave bosses 26 after knuckle pivot pin 24 centers connect with cross joint universal coupling 23, the front-wheel 3 that is installed on the front brake nave boss is rotated, its steering mode is the same with existing general-utility car with structure, described main-gear box 8 uses existing three last backs four retaining formula automobile gearboxes, an auxiliary gearbox 20 is set up in the front portion, after the main-gear box 8 is forerunner's deciliter gear case 10, main driving axle 9 is connected with back axle 12 after forerunner's deciliter gear case 10, propping up transmission shaft is that front propeller shaft 7 is connected with front axle differential 29, trailing wheel 13 back axles 12 structures are the same with general-utility car, operator's compartment 18, seat 16, various operating pedal handles such as bearing circle 17 all are provided with by the automobile operational format, and the propulsive effort that described front and back drive walker tractor is that diesel powered drives power-transfer clutch 19 through cone belt, clutch spindle 32, auxiliary gearbox 20, main-gear box 8, forerunner's deciliter gear case 10, front and

back transmission shaft

7,11, front and back bridge 5,12 to front and back wheel 3,13.Certainly, also be provided with electrical lighting indicating device and self-unloading device as agri-vehicle.

Claims

1, a kind of front and back drive walker tractor, comprise frame, diesel engine, power-transfer clutch, auxiliary gearbox, main-gear box, forerunner's deciliter gear case, the front and back transmission shaft, front and back bridge and front and back wheel, operator's compartment, railway carriage, self-unloading device, the electrical lighting indicating device, it is characterized in that, the propons of described walker tractor is independent of the diff drive-type, front wheel hub is installed on the front brake nave boss of the propons left and right sides, propons is provided with knuckle pivot pin with installation front brake nave boss mandrel and is connected, the mandrel of described installation front brake nave boss is hollow, propons left and right sides semiaxis is sentenced cross joint universal coupling at the front wheel knuckle pin center and is connected, institute's bonded assembly semiaxis passes hollow mandrel and stretches out and add the semiaxis flange and drive brake hubs, described vehicle frame is the front and back integral type, and propons is connected with preceding damping spring steel plate with frame.

2, front and back according to claim 1 drive walker tractor, it is characterized in that, described propons also with left and right sides central horizontal axis for to be installed on the propons damping spring steel plate around axis suspension.

3. front and back according to claim 1 drive walker tractor, it is characterized in that, described auxiliary gearbox is by changed course conical gear, intermediate gear, driving gear and passive at a slow speed soon variable gear assembly at a slow speed soon.

4. front and back according to claim 1 drive walker tractor, it is characterized in that, but the damping spring steel plate can also left and right sides horizontal type installations of the vertical installation in front and back before described.