CN101041329A

CN101041329A - Mechanical height difference regulating device for tractor driving wheel

Info

Publication number: CN101041329A
Application number: CN 200710015721
Authority: CN
Inventors: 王清水
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-30
Filing date: 2007-04-30
Publication date: 2007-09-26
Anticipated expiration: 2027-04-30
Also published as: CN100519252C

Abstract

The invention discloses a mechanical height-difference adjusting device of tractor driving wheel, comprising left and right rockers as final transmission box. Said left and right rockers have first ends installed on left and right wheels and second ends round outer peripheral faces of left and right power output semi-shafts of tractor gearbox respectively. Second ends of said left and right rockers rotate round outer peripheral faces of said left and right power output semi-shafts respectively. It also comprises rotary pivot connected on the tractor frame horizontally and rocker driving device, which can control left and right rockers to rotate in reverse direction respectively when the pivot rotates. The invention is provided with simple structure, low producing cost and reasonable force for all parts. It is the simple modification under the foundation of prior walking tractor directly so that it can be suitable for mountains or hill regions with larger gradient.

Description

The mechanical height difference regulating device of tractor driving wheel

Technical field

The present invention relates to the trac. technical field, relate in particular to a kind of device of two drive wheel relative heights of scalable trac..

Background technology

The left and right sidesing driving wheel of most of known trac. is fixed on the same axis, can not adjust the height of its left and right sidesing driving wheel along with the slope change of walking region, turn on one's side easily when laterally walking in the hillside fields, only suit on the level land or hillside fields operation that the gradient is less, and can not be applied to bigger mountain region of the gradient or intersected country.Chinese patent CN1579121A discloses a kind of hillside tractor, it is arranged at the height difference apparatus of change speed gear box by a cover, drive is rotated simultaneously in opposite directions around the left and right sides connection pipe of left and right moving power output shaft outer peripheral face, the rotation of left and right sides connection pipe makes the rotational of the rocking arm of captive joint with it around the takeoff output semiaxis, make the left and right sidesing driving wheel that is fixed in the rocking arm other end do upper and lower motion, thereby the diff-H of having realized two drive wheels is regulated.Though this height difference apparatus compact conformation of this patent disclosure, use also more convenient, but, because the effect of gravity, on the connection pipe of the left and right sides, can produce a torque, although height difference apparatus overlaps the swing self-locking that the worm and gear device has been realized rocking arm by one, this torque is done for a long time and is used for this cover worm and gear device, can influence its service life.Simultaneously, this height difference apparatus structure is too complicated, and manufacturing cost is higher.

Summary of the invention

Technical matters to be solved by this invention is: a kind of height difference regulating device of tractor driving wheel is provided, and this control apparatus is simple in structure, low cost of manufacture.

For solving the problems of the technologies described above, technical scheme of the present invention is: the mechanical height difference regulating device of tractor driving wheel, a but left side that comprises the final transmission case body of double as, right rocking arm, a described left side, right rocking arm has the left side of being installed on respectively, first end of right drive wheel, with a left side around gear box of tractor, second end of the outer peripheral face of right takeoff output semiaxis, a described left side, second end of right rocking arm is respectively rotationally around a described left side, the outer peripheral face of right takeoff output semiaxis, it also comprises rotating pivot that is horizontally installed in tractor frame and the input shaft that is connected in gear box of tractor, and can drive described pivotally supported driving device; With the rocking arm actuating device that left and right rocking arm is rotated respectively round about.

As a kind of improvement, it also comprises around the outer peripheral face of described left takeoff output semiaxis and is fixed in the left support sleeve of gear box and around the outer peripheral face of described right takeoff output semiaxis and be fixed in the right support sleeve of gear box; Second end of described left rocking arm is sheathed on the outer peripheral face of described left support sleeve; Second end of described right rocking arm is sheathed on the outer peripheral face of described right support sleeve.

After having adopted technique scheme, the invention has the beneficial effects as follows: because second end of described left and right rocking arm is respectively rotationally around the outer peripheral face of described left and right takeoff output semiaxis, it also comprises rotating pivot that is horizontally installed in tractor frame and the input shaft that is connected in gear box of tractor, also can drive described pivotally supported driving device; With the rocking arm actuating device that left and right rocking arm is rotated respectively round about, so the power of gear box of tractor passes through driving device, can make pivoted, when described pivoted; the rocking arm actuating device rotates left and right rocking arm respectively round about, thereby realized the diff-H adjusting that left and right driving is taken turns by simple structure and lower manufacturing cost.

Because it also comprises around the outer peripheral face of described left takeoff output semiaxis and is fixed in the left support sleeve of gear box and around the outer peripheral face of described right takeoff output semiaxis and be fixed in the right support sleeve of gear box; Second end of described left rocking arm is sheathed on the outer peripheral face of described left support sleeve; Second end of described right rocking arm is sheathed on the outer peripheral face of described right support sleeve, so the torque that acts on the left and right rocking arm can not act on left and right takeoff output semiaxis, can not make it be subjected to extra application force, thereby improve the service life of change speed gear box.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is the structural representation of the embodiment of the invention;

Fig. 2 is the cutaway view of middle rocking arm part embodiment illustrated in fig. 1;

Fig. 3 be embodiment illustrated in fig. 1 in a kind of transparent view of rocking arm actuating device;

Fig. 4 be embodiment illustrated in fig. 1 in the transparent view of another kind of rocking arm actuating device.

The specific embodiment

The mechanical height difference regulating device of tractor driving wheel, as shown in Figure 2, but it comprises the left and right rocking arm 3,3 ' of the final transmission case body of double as, described left and right rocking arm 3,3 ' has first end of the left and right driving of being installed on wheel 4,4 ' respectively and around second end of left and right takeoff output semiaxis 11,11 ' outer peripheral face.Left and right takeoff output semiaxis 11,11 ' and left and right driving wheel 4,4 ' between be respectively equipped with left and right final driving device 7,7 ', they can be chain gearing, also can be belt driver or gear system etc.

Left side support sleeve 6 is around the outer peripheral face of described left takeoff output semiaxis 11 and be fixed in the casing 12 of change speed gear box, and second end of described left rocking arm 3 is sheathed on the outer peripheral face of described left support sleeve 6.Right support sleeve 6 ' is around the outer peripheral face of described right takeoff output semiaxis 11 ' and be fixed in the casing 12 of change speed gear box, and second end of described right rocking arm 3 ' is sheathed on the outer peripheral face of described right support sleeve 6 '.

Shown in Fig. 3 or 4, pivot 8 is horizontally installed in tractor frame 2 by supporting seat board 8a, and pivot 8 is rotatably connected with support seat board 8a.As shown in Figure 1, driving device 5 is connected in the input shaft of gear box of tractor 1, and its effect is to drive described pivot 8 to rotate; The effect of rocking arm actuating device 9 is that left and right rocking arm 3,3 ' is rotated respectively round about.

As shown in Figure 1, but described driving device 5 comprises the transmission gearbox 51 of vertical transmission power, and the casing 51a of described transmission gearbox is fixed in the sidewall of described gear box of tractor casing 12; Shown in Fig. 3 or 4, pusher arm 55 is fixed in described pivot 8, and nut 54 is connected in described pusher arm 55 (shown in Fig. 3 or 4) rotationally; Leading screw 53 and described nut 54 are suitable; Universal-joint drive coupling 52 is connected between the output shaft 51b of described leading screw 53 and described transmission gearbox.

Described transmission gearbox 51 comprises the first finishing bevel gear cuter 51d of the input shaft that is installed on described gear box of tractor 1, middle tap gear 51c and third hand tap gear 51f are installed on the output shaft 51b of described driving device, and middle tap gear 51c and third hand tap gear 51f are symmetricly set in the radially both sides of the described first finishing bevel gear cuter 51d.The shift fork (not shown) control described middle tap gear 51c and third hand tap gear 51f respectively with the described first finishing bevel gear cuter 51c engagement/jump out of mesh.Middle tap gear 51c and third hand tap gear 51f can realize the rotating of output shaft 51b when meshing with the first finishing bevel gear cuter 51c respectively, thereby realize the forward adjustment and the oppositely adjustment of left and right driving wheel 4,4 ' diff-H.

Handle or handwheel 51e are fixed in the output shaft 51b end of described driving device, and its effect is that the diff-H to left and right driving wheel 4,4 ' carries out manual regulation.

As shown in Figure 3, described rocking arm actuating device 9 can be realized by following structure: it comprises the left crank 91 of the left part of being fixed in described pivot 8, with the left slider (not shown) in the guide groove that is installed on described left rocking arm 3, the end of described left slider and described left crank 91 is hinged; And be fixed in described pivot 8 the right part right crank 91 ' and be installed on right slide block in the guide groove 92 ' of described right rocking arm 3 ', the end of described right slide block and described right crank 91 ' is hinged; Described left crank 91 and right crank 91 ' can make left and right rocking arm 3, the 3 ' phase difference that rotates round about having one on the periphery when pivot 8 rotates.It is actually a slider-crank mechanism.

As shown in Figure 4, described rocking arm actuating device 9 also can be realized by following structure: it comprises the left crank 91 that is fixed in described pivot 8 left parts, with the left connecting rod (not shown) that is articulated in described left rocking arm 3, the end of described left connecting rod and described left crank 91 is hinged; And be fixed in described pivot 8 the right part right crank 91 ' and be articulated in the right connecting rod 93 ' of described right rocking arm 3 ', described right connecting rod 93 ' is hinged with the end of described right crank 91 '; Described left crank 91 and right crank 91 ' can make left and right rocking arm 3, the 3 ' phase difference that rotates round about having one on the periphery when pivot 8 rotates.It is actually a piston crank mechanism.

The present invention is simple in structure, and low cost of manufacture is directly simply transformed on the basis of existing walker tractor, just can make it to be adapted at bigger mountain region of the gradient or intersected country and use, and also can be fit to have the Tillage machine for fields and gardens use of two drive wheels.

Claims

1, the mechanical height difference regulating device of tractor driving wheel, a but left side that comprises the final transmission case body of double as, right rocking arm (3,3 '), a described left side, right rocking arm (3,3 ') has the left side of being installed on respectively, right drive wheel (4,4 ') first end, with a left side around gear box of tractor, right takeoff output semiaxis (11, second end of outer peripheral face 11 '), it is characterized in that: a described left side, right rocking arm (3,3 ') second end is respectively rotationally around a described left side, right takeoff output semiaxis (11,11 ') outer peripheral face, it also comprises rotating pivot (8) that is horizontally installed in tractor frame (2) and the input shaft that is connected in gear box of tractor (1), and can drive the driving device (5) that described pivot (8) rotates; With the rocking arm actuating device (9) that left and right rocking arm (3,3 ') is rotated respectively round about.

2, the mechanical height difference regulating device of tractor driving wheel as claimed in claim 1, it is characterized in that: it also comprises around the outer peripheral face of described left takeoff output semiaxis (11) and is fixed in the left support sleeve (6) of gear box (1) and around the outer peripheral face of described right takeoff output semiaxis (11 ') and be fixed in the right support sleeve (6 ') of gear box (1); Second end of described left rocking arm (3) is sheathed on the outer peripheral face of described left support sleeve (6); Second end of described right rocking arm (3 ') is sheathed on the outer peripheral face of described right support sleeve (6 ').

3, the mechanical height difference regulating device of tractor driving wheel as claimed in claim 2, it is characterized in that: described driving device (5) comprise be connected in described gear box of tractor (1) but input shaft, and the transmission gearbox (51) of vertical transmission power, the casing of described transmission gearbox (51a) is fixed in the sidewall of described gear box of tractor casing (12); With the pusher arm that is fixed in described pivot (8) (55); With the nut that is rotationally connected with described pusher arm (55) (54); With with the suitable leading screw (53) of described nut (54); And be connected in universal-joint drive coupling (52) between the output shaft (51b) of described leading screw (53) and described transmission gearbox.

4, the mechanical height difference regulating device of tractor driving wheel as claimed in claim 3, it is characterized in that: described transmission gearbox (51) comprises first finishing bevel gear cuter (51d) of the input shaft that is installed on described gear box of tractor (1), middle tap gear (51c) and third hand tap gear (51f) with the output shaft that is installed on described driving device (51b), described middle tap gear (51c) and third hand tap gear (51f) be symmetricly set in the radially both sides of described first finishing bevel gear cuter (51d) and control described middle tap gear (51c) and third hand tap gear (51f) respectively with described first finishing bevel gear cuter (51c) engagement/out-of-gear shift fork.

5, the mechanical height difference regulating device of tractor driving wheel as claimed in claim 4 is characterized in that: it also comprises the handle or the handwheel (51e) of output shaft (51b) end of being fixed in described driving device.

6, as the mechanical height difference regulating device of described any tractor driving wheel of claim 1 to 5, it is characterized in that: described rocking arm actuating device (9) comprises the left crank (91) of the left part of being fixed in described pivot (8), with the left slider in the guide groove that is installed on described left rocking arm (3), the end of described left slider and described left crank (91) is hinged; And be fixed in described pivot (8) the right part right crank (91 ') and be installed on right slide block in the guide groove (92 ') of described right rocking arm (3 '), the end of described right slide block and described right crank (91 ') is hinged; Described left crank (91) and right crank (91 ') have a phase difference that when pivot (8) rotates left and right rocking arm (3,3 ') is rotated round about on the periphery.

7, as the mechanical height difference regulating device of described any tractor driving wheel of claim 1 to 5, it is characterized in that: described rocking arm actuating device (9) comprises the left crank (91) that is fixed in described pivot (8) left part, with the left connecting rod that is articulated in described left rocking arm (3), the end of described left connecting rod and described left crank (91) is hinged; And be fixed in described pivot (8) the right part right crank (91 ') and be articulated in the right connecting rod (93 ') of described right rocking arm (3 '), described right connecting rod (93 ') is hinged with the end of described right crank (91 '); Described left crank (91) and right crank (91 ') have a phase difference that when pivot (8) rotates left and right rocking arm (3,3 ') is rotated round about on the periphery.