CN101749379A - Final gearbox for big-power tractor - Google Patents
Final gearbox for big-power tractor Download PDFInfo
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- CN101749379A CN101749379A CN201010119825A CN201010119825A CN101749379A CN 101749379 A CN101749379 A CN 101749379A CN 201010119825 A CN201010119825 A CN 201010119825A CN 201010119825 A CN201010119825 A CN 201010119825A CN 101749379 A CN101749379 A CN 101749379A
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Abstract
The invention relates to a final gearbox, in particular to a countershaft final gearbox for a big-power tractor. The gearbox is internally provided with an input mechanism, an idler mechanism, an output mechanism and a shift mechanism. The input mechanism comprises an input shaft, the heat of the input shaft is provided with a coupling, and the input shaft is sleeved with an input gear; the idler mechanism comprises an idler shaft, and the idler shaft is respectively sleeved with a low-grade idler and a high-grade idler; the output mechanism comprises an output shaft, and the idler shaft is sleeved with a low-grade output gear and a high-grade output gear; and the shift mechanism comprises an operating lever, a shifting fork, a shifting tooth holder and a sliding sleeve. The invention has simple structure, has the function of high and low rotating speed, is simple to manufacture and convenient to maintain, and has low noise.
Description
Technical field
The present invention is a kind of final gearbox, particularly a kind of final gearbox that is used for big-power tractor of fixed shaft type.
Background technique
The transmission device of big-power tractor of the prior art, in having followed, the conventional construction of light tractor, the component of various difference in functionality effects, be combined in the transmission case as speed changer, transfer case, ransaxle, wet clutch, power output etc.There is operation inconvenience, is difficult to problems such as maintenance service, part processing difficulty, do not satisfied the demand of present domestic big-power tractor fast development.
Chinese patent CN201338536, a kind of final transmission case of hand tractor is disclosed, its left and right half modular construction is identical, be installed on the gearbox casing symmetrically, left and right sides semiaxis passes through two Bearing Installation on the housing of the left and right sides, and the spacing between the two bearings is 1/3～2/3 of a semiaxis total length, drives wheel seat and is sleeved on the left half axle by rectangular key with circumferentially locating, by the axially locating screw; Because the driving wheel seat is housed on left half axle and right axle shaft symmetrically, left half axle and right axle shaft all are fixedly mounted on respectively on left shell and the right shell body by two bearings, increased the installing space of two bearings, improved the support stiffness of semiaxis, driving the position of wheel seat on semiaxis can adjust, and two wheelspans are adjustable.The described final transmission case of this model utility, volume ratio is bigger, and structure is not compact, can not realize the conversion of different speed ratios, causes bad adaptability, and noise is bigger simultaneously, and installation and maintenance are also inconvenient.
Summary of the invention
The present invention solves the deficiencies in the prior art, and a kind of final gearbox that is used for big-power tractor that can realize different speed ratio conversions is provided.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:
A kind of final gearbox that is used for big-power tractor, comprise casing and case lid, casing and case lid fix cooperation, be provided with input mechanism, idler mechanism, output mechanism and gearshift mechanism in the casing, described input mechanism comprises input shaft, the head of input shaft is provided with shaft coupling, and axle goes into to be with the input gear on the axle; Described idler mechanism comprises idler shaft, is with low-grade idle pulley and high-grade idle pulley on the idler shaft respectively; Described output mechanism comprises output shaft, is with low-grade output gear and high-grade output gear on the output shaft; Described gearshift mechanism comprises operating handle, fork, gear shift toothholder and engagement cover, be provided with the gear shift toothholder between low-grade output gear and the high-grade output gear, the gear shift toothholder is enclosed within output shaft, gear shift toothholder, low-grade output gear and high-grade output gear are provided with spline, spline upper sleeve has the engagement cover, spline on engagement cover and gear shift toothholder, low-grade output gear and the high-grade output gear is complementary, and the engagement cover is connected with operating handle, and an end of operating handle is provided with fork; Described input gear is meshed with low-grade idle pulley.
The present invention's low grade is the one-level gearing down, top grade is the double reduction transmission, carries out high and low shelves conversion by gearshift mechanism, realizes the output of different speed ratios, constituting maximum input torque is 1500N.m, and high-grade output speed ratio is 1.195, low-grade output speed ratio is 1.88 new structure.Have handiness, processing is easy, maintenance service is convenient, the wide advantages such as (can mate 120～200 horsepowers big-power tractor) of applicability, can satisfy the growth requirement of present domestic big-power tractor preferably, adopt the separate transmission structure of fixed shaft type, adopt full helical teeth engagement driving.
When final gearbox needs in the work of low grade district, the gearshift mechanism upper shift fork drives to mesh to overlap to be moved to the left with low-grade output gear and combines, after power is imported by input coupling, through input shaft, input gear, low-grade idle pulley, low-grade output gear, engagement cover, gear shift toothholder, at last via output shaft to export than the slow-speed of revolution; When final gearbox needs in the work of top grade district, gearshift mechanism upper shift fork drive engagement cover moves right and combines with high-grade output gear, after power is imported by input coupling, through input shaft, input gear, low-grade idle pulley, high-grade idle pulley, high-grade output gear, engagement cover, gear shift toothholder, export with higher rotation speed via output shaft at last.
As preferably, input shaft in the described input mechanism and casing and case lid rotate by the input roller bearing respectively; Idler shaft in the described idler mechanism and casing and case lid rotate by the idle pulley roller bearing respectively; Output shaft in the described output mechanism and casing and case lid rotate by the output roller bearing respectively.
As preferably, described gearshift mechanism is fixed on the case lid by bearing.
As preferably, an end and the casing of described input shaft are fixedly connected, and the other end and case lid are fixedly connected; One end and the casing of described idler shaft are fixedly connected, and the other end and case lid are fixedly connected; One end and the casing of described output shaft are fixedly connected, and the other end and case lid are fixedly connected.
As preferably, described casing and case lid are fixed by fixed bolt.
As preferably, the inboard of described low-grade output gear and high-grade output gear is respectively equipped with spline, the spline on described low-grade output gear, gear shift toothholder and the high-grade output gear in line, the engagement cover slides with spline mutually by operating handle.
As preferably, an end homonymy of described fork and output shaft.
As preferably, be provided with locking nut between described high-grade output gear and output roller bearing, locking nut and high-grade output gear and low-grade output gear are axially located.
As preferably, described input gear, high-grade idle pulley, low-grade idle pulley, low-grade output gear and high-grade output gear are the helical teeth engagement driving.
As preferably, described idle pulley roller bearing is a circular cone idle pulley roller bearing.
Therefore, the final gearbox that is used for big-power tractor provided by the invention, simple in structure, have function of high and low rotating speed, to process easyly, easy to maintenance, noise is low.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, technological scheme of the present invention is described in further detail.
Embodiment: as shown in Figure 1, a kind of final gearbox that is used for big-power tractor, comprise casing 1 and case lid 2, casing 1 and case lid 2 fix cooperation, casing 1 and case lid 2 are fixing by fixed bolt 21, be provided with input mechanism in the casing 1, idler mechanism, output mechanism and gearshift mechanism, described input mechanism comprises input shaft 3, the head of input shaft 3 is provided with shaft coupling 4, axle goes into to be with input gear 5 on the axle 3, input shaft 3 rotates by input roller bearing 17 respectively with casing 1 and case lid 2, and an end and the casing 1 of input shaft 3 are fixedly connected, and the other end and case lid 2 are fixedly connected; Described idler mechanism comprises idler shaft 6, be with low-grade idle pulley 7 and high-grade idle pulley 8 on the idler shaft 6 respectively, idler shaft 6 rotates by idle pulley roller bearing 18 respectively with casing 1 and case lid 2, one end and the casing 1 of idler shaft 6 are fixedly connected, the other end and case lid 2 are fixedly connected, and idle pulley roller bearing 18 is a circular cone idle pulley roller bearing; Described output mechanism comprises output shaft 9, be with low-grade output gear 10 and high-grade output gear 11 on the output shaft 9, output shaft 9 rotates by output roller bearing 19 respectively with casing 1 and case lid 2, one end and the casing 1 of output shaft 9 are fixedly connected, the other end and case lid 2 are fixedly connected, high-grade output gear 11 and 19 on roller bearing of output are provided with locking nut 22, locking nut 22 and high-grade output gear 11 and low-grade output gear 10 axially locating; Described gearshift mechanism comprises operating handle 12, fork 13, gear shift toothholder 14 and engagement cover 15, be provided with gear shift toothholder 14 between low-grade output gear 10 and the high-grade output gear 11, gear shift toothholder 14 is enclosed within output shaft 9, gear shift toothholder 14, low-grade output gear 10 and high-grade output gear 11 are provided with spline 16, be with engagement cover 15 on the spline 16, engagement cover 15 and gear shift toothholder 14, spline 16 on low-grade output gear 10 and the high-grade output gear 11 is complementary, engagement cover 15 is connected with operating handle 12, one end of operating handle 12 is provided with fork 13, and gearshift mechanism is fixed on the case lid 2 by bearing 20; The inboard of low-grade output gear 10 and high-grade output gear 11 is respectively equipped with spline 16, and the spline 16 on described low-grade output gear 10, gear shift toothholder 14 and the high-grade output gear 11 meshes cover 15 and slides mutually with spline 16 by operating handle 12 in line; One end homonymy of fork 13 and output shaft 9; Described input gear 5 is meshed with low-grade idle pulley 7; Input gear 5, high-grade idle pulley 8, low-grade idle pulley 7, low-grade output gear 10 and high-grade output gear 11 are the helical teeth engagement driving.
Claims (10)
1. final gearbox that is used for big-power tractor, comprise casing (1) and case lid (2), casing (1) and case lid (2) fix cooperation, it is characterized in that: casing is provided with input mechanism, idler mechanism, output mechanism and gearshift mechanism in (1), described input mechanism comprises input shaft (3), the head of input shaft (3) is provided with shaft coupling (4), and axle goes into to be with input gear (5) on the axle (3); Described idler mechanism comprises idler shaft (6), is with low-grade idle pulley (7) and high-grade idle pulley (8) on the idler shaft (6) respectively; Described output mechanism comprises output shaft (9), is with low-grade output gear (10) and high-grade output gear (11) on the output shaft (9); Described gearshift mechanism comprises operating handle (12), fork (13), gear shift toothholder (14) and engagement cover (15), be provided with gear shift toothholder (14) between low-grade output gear (10) and the high-grade output gear (11), gear shift toothholder (14) is enclosed within output shaft (9), gear shift toothholder (14), low-grade output gear (10) and high-grade output gear (11) are provided with spline (16), be with engagement cover (15) on the spline (16), engagement cover (15) and gear shift toothholder (14), spline (16) on low-grade output gear (10) and the high-grade output gear (11) is complementary, engagement cover (15) is connected with operating handle (12), and an end of operating handle (12) is provided with fork (13); Described input gear (5) is meshed with low-grade idle pulley (7).
2. the final gearbox that is used for big-power tractor according to claim 1 is characterized in that: the input shaft in the described input mechanism (3) rotates by input roller bearing (17) respectively with casing (1) and case lid (2); Idler shaft in the described idler mechanism (6) rotates by idle pulley roller bearing (18) respectively with casing (1) and case lid (2); Output shaft in the described output mechanism (9) rotates by output roller bearing (19) respectively with casing (1) and case lid (2).
3. the final gearbox that is used for big-power tractor according to claim 1 and 2 is characterized in that: described gearshift mechanism is fixed on the case lid (2) by bearing (20).
4. the final gearbox that is used for big-power tractor according to claim 1 and 2 is characterized in that: an end of described input shaft (3) and casing (1) are fixedly connected, and the other end and case lid (2) are fixedly connected; One end of described idler shaft (6) and casing (1) are fixedly connected, and the other end and case lid (2) are fixedly connected; One end of described output shaft (9) and casing (1) are fixedly connected, and the other end and case lid (2) are fixedly connected.
5. the final gearbox that is used for big-power tractor according to claim 4 is characterized in that: described casing (1) and case lid (2) are fixing by fixed bolt (21).
6. the final gearbox that is used for big-power tractor according to claim 1 and 2, it is characterized in that: the inboard of described low-grade output gear (10) and high-grade output gear (11) is respectively equipped with spline (16), spline (16) on described low-grade output gear (10), gear shift toothholder (14) and the high-grade output gear (11) meshes cover (15) and slides mutually with spline (16) by operating handle (12) in line.
7. the final gearbox that is used for big-power tractor according to claim 1 and 2 is characterized in that: an end homonymy of described fork (13) and output shaft (9).
8. the final gearbox that is used for big-power tractor according to claim 1 and 2, it is characterized in that: be provided with locking nut (22) between described high-grade output gear (11) and output roller bearing (19), locking nut (22) and high-grade output gear (11) and low-grade output gear (10) axially locating.
9. the final gearbox that is used for big-power tractor according to claim 1 and 2 is characterized in that: described input gear (5), high-grade idle pulley (8), low-grade idle pulley (7), low-grade output gear (10) and high-grade output gear (8) are the helical teeth engagement driving.
10. the final gearbox that is used for big-power tractor according to claim 1 and 2 is characterized in that: described idle pulley roller bearing (18) is a circular cone idle pulley roller bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010119825A CN101749379A (en) | 2010-03-09 | 2010-03-09 | Final gearbox for big-power tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010119825A CN101749379A (en) | 2010-03-09 | 2010-03-09 | Final gearbox for big-power tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101749379A true CN101749379A (en) | 2010-06-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010119825A Pending CN101749379A (en) | 2010-03-09 | 2010-03-09 | Final gearbox for big-power tractor |
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| CN (1) | CN101749379A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410932A (en) * | 2013-08-02 | 2013-11-27 | 苏州优备精密电子有限公司 | Harmonic speed reducer |
| CN104896032A (en) * | 2015-03-27 | 2015-09-09 | 广西澜光科技有限公司 | A novel tractor implement power reduction gearbox |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2725628Y (en) * | 2004-09-17 | 2005-09-14 | 苏州工业园区永和摩托车制造有限公司 | Back running device of full region vehicle |
| US20090042685A1 (en) * | 2007-08-10 | 2009-02-12 | Aisin Ai Co., Ltd. | Transmission |
| CN201344233Y (en) * | 2009-01-13 | 2009-11-11 | 杭州南方通达齿轮有限公司 | Gear case for dynamic balance measuring machine |
| CN201351728Y (en) * | 2008-12-02 | 2009-11-25 | 中国重型机械研究院 | Gear shift fork shifting mechanism |
| CN201672007U (en) * | 2010-03-09 | 2010-12-15 | 杭州欣农传动技术有限公司 | Terminal transmission box for big power tractor |
-
2010
- 2010-03-09 CN CN201010119825A patent/CN101749379A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2725628Y (en) * | 2004-09-17 | 2005-09-14 | 苏州工业园区永和摩托车制造有限公司 | Back running device of full region vehicle |
| US20090042685A1 (en) * | 2007-08-10 | 2009-02-12 | Aisin Ai Co., Ltd. | Transmission |
| CN201351728Y (en) * | 2008-12-02 | 2009-11-25 | 中国重型机械研究院 | Gear shift fork shifting mechanism |
| CN201344233Y (en) * | 2009-01-13 | 2009-11-11 | 杭州南方通达齿轮有限公司 | Gear case for dynamic balance measuring machine |
| CN201672007U (en) * | 2010-03-09 | 2010-12-15 | 杭州欣农传动技术有限公司 | Terminal transmission box for big power tractor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410932A (en) * | 2013-08-02 | 2013-11-27 | 苏州优备精密电子有限公司 | Harmonic speed reducer |
| CN104896032A (en) * | 2015-03-27 | 2015-09-09 | 广西澜光科技有限公司 | A novel tractor implement power reduction gearbox |
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Open date: 20100623 |