CN102112335A

CN102112335A - Agricultural tractor

Info

Publication number: CN102112335A
Application number: CN2009801311274A
Authority: CN
Inventors: L·哥尔多尼
Original assignee: Goldoni S P A
Current assignee: Goldoni S P A
Priority date: 2008-08-08
Filing date: 2009-08-05
Publication date: 2011-06-29
Also published as: EP2318227A1; BRPI0917003A2; IT1391261B1; ITMO20080217A1; JP2011530440A; WO2010015649A1; KR20110051200A

Abstract

An agricultural tractor (1 ), comprising a chassis (2) that rests on wheels (3), two front wheels (3a) and two rear wheels (3b), and accommodates an engine (4) and an assembly (5) for transferring the power delivered by the engine to at least the rear wheels (3b), wherein the assembly is provided with a speed shifting device (6), the chassis (2) being contoured so as to form a driving station (7) for the assigned operator, which is equipped with a climbing/descent platform (7a), the speed shifting device (6) being provided with a primary shaft (6a) that is arranged substantially parallel and axially offset with respect to the driving shaft (4a), and transmission means (8) being interposed between the driving shaft (4a) and the primary shaft (6a).

Description

Farm tractor

Technical field

The present invention relates to be provided with transmission of power that driving engine the is provided farm tractor to the assembly of wheel, this farm tractor has the vertical space that reduces and occupies.

Background technology

Farm tractor is well-known machinery, and it is widely used as breakdown trailer or is the device of the specific farm equipment of cover.These trac.s mainly are made of the chassis that is bearing on the four wheels, two is front-wheel in the four wheels, two is trailing wheel, and the shape of chassis forms front deck and is used for holding the rear deck of those elements that make wheel turns, and the driving platform that is used for the descending operation device is inserted between the cabin, front and back.

Trac. is provided with driving engine usually, and this driving engine is contained in the front deck of chassis, and is arranged to towards travel direction,, with respect to direction to overtake, makes the rear portion of axle drive shaft towards trac. that is, and a radiator is arranged in the driving engine front.Friction clutch is fixed on the axle drive shaft by means of flange, and rotation is directly delivered to transmission system with the coaxial main shaft of axle drive shaft on, the output shaft of this transmission system directly links to each other with the differential attachment of rotary-actuated axletree of rear wheel, and links with the differential attachment of rotary-actuated front-wheel axletree by means of transmission coupling (transmission coupling).This transmission coupling is contained in the protecting sheathing of the functional and safety of guaranteeing it easily.

These known farm tractors unavoidably have shortcoming, protrusion is caused driving on the platform in the occupied space that these shortcomings comprise friction clutch, transmission system and back differential attachment, this protrusion has hindered the operator and has freed in and out and move, and has constituted when he climbs up down vehicle and endanger its safe danger.

In addition; the transmission coupling and the cooresponding protecting sheathing that are used for front-wheel are given prominence to downwards with respect to chassis; reduced and ground-surface space; increased danger with the collision of ground outshot; and; for some application scenario, make to install to become impossible such as the lawnmower under the car abdomen.

Summary of the invention

Target of the present invention is to eliminate the shortcoming of above-mentioned known trac. by a kind of farm tractor is provided, the driving platform spaciousness of this trac., give bigger freedom of motion of operator and comfort level, and in the step of climbing up following vehicle, guarantee bigger safety.

In this target, an object of the present invention is to increase the space of built on stilts below the chassis, even make trac. on hackly landform, also can use safely, and allow to use equipment the lawnmower under the car abdomen.

Another object of the present invention provides a kind of farm tractor, and it is simple in structure, and quite easily is provided in the practice, and is safe in utilization, the efficient that operates height, and cost is quite low.

This target of the present invention more clearly that will become hereinafter and above-mentioned and other purpose realize by farm tractor of the present invention, this farm tractor comprises the chassis that is shelved on the wheel, two front-wheels and two trailing wheels, and hold driving engine and the power that described driving engine provides is sent to assembly on the trailing wheel at least, this assembly is provided with transmission system, chassis the is configured to form the assigned operation employed operator platform of person, this operator platform is equipped with the platform under being used to climb up/climb, it is characterized in that, described transmission system is provided with main shaft, this main shaft is arranged to be arranged essentially parallel to axle drive shaft, and axially depart from respect to axle drive shaft, driving device is inserted between described axle drive shaft and the main shaft.

Description of drawings

From following to farm tractor preferably but the detailed description of not exclusive embodiment, it is more clear that further aspect of the present invention and advantage will become, the embodiment of this trac. shows by means of the limiting examples in the accompanying drawing, in the accompanying drawing:

Fig. 1 is the schematic side elevation according to farm tractor of the present invention, and part dots;

Fig. 2 is the front elevation according to the driving device of trac. of the present invention;

Fig. 3 is the cutaway view along the intercepting of the line III-III among Fig. 2;

Fig. 4 is according to the schematic plan view that in the trac. of the present invention transmission of power is arrived the assembly of wheel.

The specific embodiment

With reference to accompanying drawing, the expression farm tractor that Reference numeral 1 is total.

Trac. 1 comprises the chassis that is shelved on the wheel 32, two front-wheel 3a and two trailing wheel 3b, and holds driving engine 4 and the power that described driving engine provides is sent to assembly 5 on the trailing wheel 3b at least, and this assembly is provided with transmission system 6.

With respect in the accompanying drawing by the preceding line direction shown in the arrow A, being shaped as of chassis 2 forms front deck 2a and rear deck 2b, the operator platform 7 that has the operator to use between front deck and rear deck, this operator platform have and are used to climb up the platform 7a that climbs down seat 7b.

Advantageously, transmission system 6 is provided with primary input axle 6a, and this primary input axle is parallel and axially depart from (non-coaxial) with respect to the axle drive shaft 4a of driving engine 4, and driving device 8 is inserted between described axle drive shaft 4a and the main shaft 6a.

Preferably, main shaft 6a is arranged in built on stilts certain height place, and this is lower than the height of platform 7a highly basically, and driving engine 4 is arranged to make the front portion of its axle drive shaft 4a towards trac. 1.

The shape of axle drive shaft 4a is configured to form flywheel usually, and is connected to friction clutch 9.

Driving device 8 comprises at least one flexible member 10 and at least one flower wheel 12, flexible member 10 is closed into annular and is centered around around at least one drive wheel 11, this drive wheel 11 is connected with axle drive shaft 4a being used for joint style (jointly) rotates, and flower wheel 12 is used for rotary-actuated main shaft 6a.

In a preferred embodiment, flexible member 10 is made of odontoid belt, and

wheel

11 and 12 is provided with tooth in its peripheral edge margin, but so element can be the type of flat belt also for example, is made of corresponding belt pulley, chain or other element that is equal to and take

turns

11 and 12.

Be provided with and be used for the element 10a of tensioning flexible member 10, this original paper 10a is supported by chassis 2.

Transmission system 6 is contained in the rear deck 2b, and transmission component 5 provides tween drive shaft 13, and tween drive shaft 13 has Hooke's coupling 14 on its relative two ends.In the accompanying drawings, Reference numeral 14a represents the Hooke's coupling that links to each other with driven shaft 15, and driven shaft 15 is rotary-actuated by flower wheel 12, and Reference numeral 14b represents to be connected to the Hooke's coupling of main shaft 6a one end.

Driven shaft 15 is by chassis 2 supporting, so that it can freely rotate around himself axis, and this driven shaft is arranged to main shaft 6a coaxial; Therefore, tween drive shaft 13 is positioned at the lower area near platform 7a, and this zone does not hinder operator's protrusion.

In addition, transmission component 5 has the back differential attachment 16 of the axletree 17 that is used for rotary-actuated trailing wheel 3b, and this differential attachment 16 is rotary-actuated by the output shaft 6b of transmission system 6.

In the vehicle situation that drives by all wheels, transmission component 5 also has the preceding differential attachment 18 of the axletree 19 that is used for rotary-actuated front-wheel 3a, by transmission shaft 20, this differential attachment 18 is also rotary-actuated by output shaft 6b, and transmission shaft 20 has Hooke's coupling 21 at its place, relative two ends.In the accompanying drawings, Reference numeral 21a represents the Hooke's coupling that links to each other with differential attachment 18, and Reference numeral 21b represents to be connected to the Hooke's coupling of main shaft 6a one end.

Should be noted that and since transmission system 6 with respect to background technology be arranged in backward and the position that reduces in, thereby transmission shaft 20 reduces with respect to ground-surface degree of dip, thereby allows the space of the built on stilts of raising chassis 2 belows.

Chassis 2 is configured in the lower area, so that comprise transmission shaft 20.

At last, the device that is used for cooled engine 4 22 such as the radiator that has exhaust blower is arranged in driving engine 4 back.

Should be noted that driving engine 4, friction clutch 9, transmission system 6 and

differential attachment

16 and 18 do not describe in detail, because they can be any types, and because their structure and purpose of the present invention are irrelevant.

Operation of the present invention is as follows.

In case started driving engine 4, then rotation is passed to main shaft 6a, and, rotation is delivered to output shaft 6b and is delivered to wheel 3 thus from main shaft according to the transmitting ratio that is provided with in the transmission system 6 by means of driving device 8.

In practice, have found that, described the present invention has realized the target and the purpose that are proposed, especially, pointed out emphatically such fact: in the formed upper area of protrusion that causes by the space that transmission of power is occupied to the mechanical element of the assembly of wheel, be spacious according to the platform that is used under climbing up of trac. of the present invention.

In addition, the special construction of transmission system 6 allows to reduce to be used to be delivered to the overhang of the axle of front-wheel from the chassis profile, has increased gap overhead.

The present invention to design like this is easy to make many kinds of modifications and variations, and all such modifications and variation all are included within the scope of attached claims.

Also available other the technical element that is equal to of all details substitutes.

In practice, material therefor and the shape and size that accompany with it can be chosen wantonly as requested, and do not break away from the protection domain of appended claim.

The application requires the senior interest to disclosures in Italian patent application No.MO2008A000217, and this paper is to introduce the content of this patent referring to mode.

The technical characterictic heel drawings attached mark of mentioning in arbitrary claim, it only is in order to improve the intelligibility to claims that these Reference numerals are included, therefore, for annotating with each element that this Reference numeral identified by means of example, such Reference numeral is to its effect without any restriction.

Claims

1. a farm tractor (1), it comprises the chassis (2) that is shelved on the wheel (3), two front-wheels (3a) and two trailing wheels (3b), and hold driving engine (4) and the power that described driving engine provides is sent to assembly (5) on the trailing wheel (3b) at least, this assembly (5) is provided with transmission system (6), chassis (2) the is configured to form the assigned operation employed operator platform of person (7), this operator platform is equipped with the platform (7a) under being used to climb up/climb, it is characterized in that, described transmission system (6) is provided with main shaft (6a), this main shaft is arranged to be arranged essentially parallel to axle drive shaft (4a), and axially depart from respect to axle drive shaft (4a), driving device (8) is inserted between described axle drive shaft (4a) and the main shaft (6a).

2. trac. as claimed in claim 1 is characterized in that, described main shaft (6a) is arranged in overhead certain height place, and this is lower than the height of described platform (7a) highly basically.

3. trac. as claimed in claim 1 or 2 is characterized in that, with respect to preceding line direction (A), described driving engine (4) is arranged to make the front portion of its axle drive shaft (4a) towards described trac..

4. as one or multinomial described trac. in the above-mentioned claim, it is characterized in that, described driving device (8) comprises at least one flexible member (10), flexible member (10) is closed into annular and is centered around at least one drive wheel (11) on every side, this drive wheel (11) is connected in described axle drive shaft (4a) with joint style so that rotate, this flexible member (10) is also around at least one flower wheel (12), and this flower wheel is used for rotary-actuated described main shaft (6a).

5. trac. as claimed in claim 4 is characterized in that, described flexible member (10) is the type of flat belt, and described driving and flower wheel (11,12) are made of corresponding belt pulley.

6. trac. as claimed in claim 4 is characterized in that, described flexible member (10) is the type of odontoid belt, and its peripheral edge margin of described driving and flower wheel (11,12) is provided with tooth.

7. as one or multinomial described trac. in the above-mentioned claim, it is characterized in that with respect to preceding line direction (A), described transmission system (6) is contained in described platform (7a) back in the described chassis (2).

8. as one or multinomial described trac. in the above-mentioned claim, it is characterized in that, described transmission component (5) comprises the tween drive shaft (13) that is positioned at described platform (7a) below, be provided with corresponding Hooke's coupling (14) at the relative two ends of tween drive shaft (13), one of them Hooke's coupling (14a) with link to each other by the rotary-actuated driven shaft (15) of described flower wheel (12), another Hooke's coupling (14b) links to each other with described main shaft (6a).

9. as one or multinomial described trac. in the above-mentioned claim, it is characterized in that, described transmission component (5) comprises transmission shaft (20), the two ends place relative at transmission shaft (20) is provided with Hooke's coupling (21), one of them Hooke's coupling (21b) links to each other with the output shaft (6b) of described transmission system (6), and another Hooke's coupling (21a) links to each other with preceding differential attachment (18), and this preceding differential attachment is used for the axletree (19) of rotary-actuated front-wheel (3a).

10. as one or multinomial described trac. in the above-mentioned claim, it is characterized in that, described transmission component (5) comprises the back differential attachment (16) of the axletree (17) that is used for rotary-actuated trailing wheel (3b), and this back differential attachment is rotary-actuated by the output shaft (6b) of described transmission system (6).

11., it is characterized in that it comprises the friction clutch (9) that is connected to described axle drive shaft (4a) as one or multinomial described trac. in the above-mentioned claim.

12. as one or multinomial described trac. in the above-mentioned claim, it is characterized in that it comprises the device (22) that is used for cooling off described driving engine (4), with respect to preceding line direction (A), this device (22) is contained in the described chassis (2), at the Background Region of described driving engine.