CN100447449C

CN100447449C - 6+2 shifting tractor transversely-conjoined speed-changing box

Info

Publication number: CN100447449C
Application number: CNB2007100135386A
Authority: CN
Inventors: 李剑明
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-02-09
Filing date: 2007-02-09
Publication date: 2008-12-31
Anticipated expiration: 2027-02-09
Also published as: CN101016934A

Abstract

The invention discloses a 6+2 shift tractor transverse connecting gear box, wherein the second and third axles are arranged with a forward shift speed changer between to realize three-shift speed change, the third and fourth axles are arranged with a high-low shift speed changer between to realize two-shift speed change. The invention also comprises a backward shift between the second and third axles, while the backward shift comprises a medium wheel axle parallel mounted with the transmission axles in the gear box and meshed with the three-axle gear, while the medium wheel axle and the second axle controlled by a second fork device can selectively mesh gear or release. The invention can output six forward shifts and two backward shifts, with selective working speeds via different loads.

Description

The transversely conjoined gearbox of 6+2 retaining tractor

Technical field

The present invention relates to the gearbox technical field, relate in particular to a kind of many gears gearbox that is used for tractor.

Background technique

China is general four-wheel tractor gearbox at present, Mount Taishan series four-wheel tractor gearbox for example, have six advance gear and the positions of reversing gear, increase along with supporting agricultural machinery and implement kind, the user is difficult to require and load according to different work, the choose reasonable operating rate, thus the fuel oil loss increased, influence the raising of tractor overall performance.Particularly reverse gear and have only one, be left with no alternative when tractor falls back.

Summary of the invention

Technical problem to be solved by this invention is: provide a kind of 6+2 retaining tractor transversely conjoined gearbox, this gearbox has six advance gear and two positions of reversing gear, the user can require and load according to different work, selects more work speed, has improved the adaptability of tractor.

For solving the problems of the technologies described above, technological scheme of the present invention is: the transversely conjoined gearbox of 6+2 retaining tractor, comprise one that is used to import power, two of transmission in the middle of being used for, three, four and five, be used for six of outputting power, described one and the engagement of two shaftgears, be provided with the forward gear speed change gear that to realize three class gear shift between described two and three, be provided with the high to low gear speed change gear that to realize two retaining speed changes between described three and four, described four and the engagement of five shaftgears, described five and the engagement of six shaftgears, it also comprises the reverse gear apparatus that is arranged between two and three.

As a kind of optimal way, described forward gears speed change gear comprises that feather key is connected in a dual gear and a simply connected gear of two, be fixedly connected on three first gear, second gear and the 3rd gear, be used to control dual gear respectively with first shifting fork device of first gear and second gear engagement, be used to control second shifting fork device of simply connected gear and the 3rd gear engagement.

As another kind of optimal way, described reverse gear apparatus comprise one with the parallel axle of carrier pulley that is installed on gear box of described these transmission shafts, the engagement of described axle of carrier pulley and three shaftgears, and described axle of carrier pulley selectively carries out gear engagement or disengaging gear engagement with two under the control of second shifting fork device.

As further improvement, described axle of carrier pulley is equipped with a bigeminy idle wheel gear, described simply connected gear on two and the gear in the described bigeminy idle wheel gear of being installed on selectively meshes under the control of second shifting fork device or breaks away from engagement, another gear in the described bigeminy idle wheel gear and the 3rd gear engagement that is installed on three.

After having adopted technique scheme, because it is provided with reverse gear apparatus between two and three, it can realize that with the high to low gear speed change gear that can realize two retaining speed changes two retreat retaining output.Above-mentioned improvement, can make original 6+1 retaining four-wheel tractor gearbox realize six forward gears and two outputs of reversing gear, the user can require and load according to different work, selects more work speed, thereby reduced the fuel oil loss, improved tractor overall performance and adaptability.

Description of drawings

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

Fig. 1 is the structure sectional view of the embodiment of the invention;

Fig. 2 is the longitudinal sectional view of embodiment of the invention intermediary wheel shaft and the engagement of two shaftgears;

Fig. 3 is the sectional view at A-A place among Fig. 1.

Mode of execution

Shown in Fig. 1 and Fig. 3 are common, the transversely conjoined gearbox of 6+2 retaining tractor, comprise one 1 that is used to import power, two 2 of transmission in the middle of being used for, three 3, four 4 and five 5, be used for six 6 of outputting power, described 1 and two 2 gear engagement, be provided with the forward gear speed change gear that to realize three class gear shift between described two 2 and three 3, be provided with the high to low gear speed change gear that to realize two retaining speed changes between described three 3 and four 4, described four 4 and five 5 gear engagement, described five 5 and six 6 gear engagement, it also comprises the reverse gear apparatus that is arranged between two 2 and three 3.

Described forward gears speed change gear comprises a dual gear 21 and simply connected gear 22 that feather key is connected in two 2, be fixedly connected on three 3 first gear 31, second gear 32 and the 3rd gear 33, be used to control dual gear 21 respectively with the first shifting fork device 8a of

first gear

31 and 32 engagements of second gear, be used to control the second shifting fork device 8b that simply connected gear 22 and the 3rd gear 33 mesh.

Described reverse gear apparatus comprises a parallel axle of carrier pulley 7 that is installed on gear box 10 with described these transmission shafts, described axle of carrier pulley 7 and three 3 gear engagement, and described axle of carrier pulley 7 and two 2 selectively carry out gear engagement or break away from gear engagement under the control of the second shifting fork device 8b.

As shown in Figure 2, reverse gear apparatus can adopt more detailed structure to realize, described axle of carrier pulley 7 is equipped with a bigeminy idle wheel gear 71, the described simply connected gear 22 that is installed on two 2 selectively meshes under the control of the second shifting fork device 8b with a gear in the described bigeminy idle wheel gear 71 or breaks away from engagement, another gear in the described bigeminy idle wheel gear 71 and the 3rd gear 33 engagements that are installed on three 3.

Six forward gears of the present invention, basic identical with known gear box of tractor, two working principle that retreats retaining is such: under the control of the second shifting fork device 8b, a gear engagement of simply connected gear 22 and bigeminy idle wheel gear 71, bigeminy idle wheel gear 71 will be by its three 3 backward rotation of another gear driven, thereby realize reversing gear; Realize two grades of outputs by the high and low shift speed change gear that is arranged between three 3 and four 4 again.

In order to narrate conveniently, when the gearbox horizontal positioned, position near one 1 is defined as the front side, position near six 6 is defined as rear side, as shown in Figure 1, described two 2 front lower places that are positioned at one 1, described three 3 rear lower sides that are positioned at two 2, when so being provided with, the described first shifting fork device 8a and the second shifting fork device 8b are positioned at one 1 front side, so just can make Joystick 9 reaches of the first shifting fork device 8a and the second shifting fork device 8b, increase the distance between driver and the Joystick, improve the travelling comfort of tractor driving.

Claims

1, the transversely conjoined gearbox of 6+2 retaining tractor, comprise one (1) being used to import power, in the middle of being used for two (2) of transmission, three (3), four (4) and five (5), six (6) that are used for outputting power, described one (1) and two (2) gear engagement, be provided with the forward gear speed change gear that to realize three class gear shift between described two (2) and three (3), be provided with the high to low gear speed change gear that to realize two retaining speed changes between described three (3) and four (4), described four (4) and five (5) gear engagement, described five (5) and six (6) gear engagement, it is characterized in that: it also comprises the reverse gear apparatus that is arranged between two (2) and three (3).

2, the transversely conjoined gearbox of 6+2 retaining tractor as claimed in claim 1, it is characterized in that: described forward gears speed change gear comprises that feather key is connected in a dual gear (21) and a simply connected gear (22) of two (2), be fixedly connected on first gear (31), second gear (32) and the 3rd gear (33) of three (3), be used to control dual gear (21) respectively with first shifting fork device (8a) of first gear (31) and second gear (32) engagement, be used to control second shifting fork device (8b) of simply connected gear (22) and the 3rd gear (33) engagement.

3, the transversely conjoined gearbox of 6+2 retaining tractor as claimed in claim 2, it is characterized in that: described reverse gear apparatus comprises a parallel axle of carrier pulley (7) that is installed on gear box with described these transmission shafts, described axle of carrier pulley (7) and three (3) gear engagement, and described axle of carrier pulley (7) selectively carries out gear engagement or breaks away from gear engagement with two (2) under the control of second shifting fork device (8b).

4, the transversely conjoined gearbox of 6+2 retaining tractor as claimed in claim 3, it is characterized in that: described axle of carrier pulley (7) is equipped with a bigeminy idle wheel gear (71), a described gear that is installed in two simply connected gears (22) on (2) and the described bigeminy idle wheel gear (71) selectively meshes under the control of second shifting fork device (8b) or breaks away from engagement, and another gear in the described bigeminy idle wheel gear (71) meshes with the 3rd gear (33) that is installed on three (3).

5, the transversely conjoined gearbox of 6+2 retaining tractor as claimed in claim 1, it is characterized in that: described two (2) are positioned at the front lower place of (1), and described three (3) are positioned at the rear lower side of two (2).

6, the transversely conjoined gearbox of 6+2 retaining tractor as claimed in claim 5, it is characterized in that: described first shifting fork device (8a) and second shifting fork device (8b) are positioned at (a 1) front side.