CN201568537U - Tractor change gear case counter transmission shifting mechanism - Google Patents
Tractor change gear case counter transmission shifting mechanism Download PDFInfo
- Publication number
- CN201568537U CN201568537U CN2009202559039U CN200920255903U CN201568537U CN 201568537 U CN201568537 U CN 201568537U CN 2009202559039 U CN2009202559039 U CN 2009202559039U CN 200920255903 U CN200920255903 U CN 200920255903U CN 201568537 U CN201568537 U CN 201568537U
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- CN
- China
- Prior art keywords
- gear
- speed change
- shaft
- secondary speed
- bearing
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- Expired - Fee Related
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Abstract
The utility model relates to a tractor change gear case counter transmission shifting mechanism, which comprises a counter change gear intermediate gear shaft which is supported on a change gear case body through a bearing, and a second shaft and a main drive shaft which are supported on the change gear case body. The main drive shaft is connected with the second shaft through a front bearing; the counter change gear intermediate gear shaft is provided with a drive main gear, a intermediate drive gear and a drive pinion gear in turn; the main drive shaft is provided with a counter change sliding gear seat; a counter change sliding gear spline provided with a cam groove is connected with the counter change sliding gear seat; a counter change low driven gear is arranged on the main drive shaft through an outer bearing and is always meshed with the drive pinion gear; the drive main gear is always meshed with a pinion gear of the second shaft; a high-speed gear ring of the second shaft and a low-speed gear ring of the counter change low driven gear correspond to the internal teeth of a counter change sliding gear; and the intermediate drive gear corresponds to the outer teeth of the counter change sliding gear. The utility model has the characteristics of simple structure, and simple, convenient and reliable gear shift.
Description
Technical field
The utility model relates to the secondary trasmission shifting system of a kind of gear box of tractor, belongs to middle-size and small-size wheeled tractor speed change drive technology field.
Background technique
At present advanced wheeled tractor adopts complex transmission, and as 4 * (3+1) gearboxes, promptly main transformer speed is that 4 grades, secondary speed change are 3 grades and a reverse gear.This gear generally is 3 secondary gears and a reverse gear, by the operating mechanism control of a cover, promptly needs two shift forks, two declutch shift shafts and a cover mutual interlocking gear and a cover operating handle to form, and structure is comparatively complicated.Yet because operation needs, when wheeled tractor needed the fusiformis function, its reverse gear is handled just to be needed to separate with three secondary gears.At this moment, three secondary gears still need two declutch shift shafts, two shift forks and a cover mutual interlocking gear and a cover operating handle control, and when handling gear shift, need be according to the difference of gear, Joystick not only will move forward and backward, also want move left and right, this just needs a big operating space, has limited the layout of other lever piece members simultaneously.
Summary of the invention
The purpose of this utility model provide a kind of simple in structure, gear shift is light, the secondary trasmission shifting system of reliable gear box of tractor.
The utility model is that the technological scheme that achieves the above object is: the secondary trasmission shifting system of a kind of gear box of tractor, comprise by bearing and be bearing in the secondary speed change intermediate gear shaft on the gearbox casing and be bearing in second and main drive shaft on the gearbox casing, main drive shaft is connected with second by fore bearing, it is characterized in that: be provided with initiatively gearwheel on the described secondary speed change intermediate gear shaft successively, middle-grade driving gear and driver pinion, secondary speed change slide teeth wheel seat is installed on the main drive shaft, the secondary speed change sliding gear spline that is provided with allocating slot is connected on the secondary speed change slide teeth wheel seat, the low-grade driven gear of secondary speed change is installed on the main drive shaft and with driver pinion by outer bearing and often meshes, initiatively the small gear on gearwheel and second often meshes, low speed ring gear on the low-grade driven gear of high speed gear ring on second and secondary speed change is corresponding with the internal tooth of secondary speed change sliding gear, and middle-grade driving gear is corresponding with the external tooth of secondary speed change sliding gear.
The utility model is installed a secondary speed change slide teeth wheel seat on main drive shaft, secondary speed change sliding gear is installed on this pair speed change slide teeth wheel seat, and second and the low-grade driven gear of secondary speed change are respectively equipped with high speed gear ring and low speed ring gear, move axially by shift fork, realize power output.The utility model only needs a declutch shift shaft, shift fork, an operating mechanism that overlaps operating handle to control secondary gear, not only gear shift is light, reliable, and Joystick only need move forward and backward, and the manipulation space that takies is little, convenience also is provided for simultaneously the layout of other lever piece members.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model.
Wherein: 1-input shaft, second of 2-, 3-fore bearing, 4-high speed gear ring, the secondary speed change slide teeth of 5-wheel seat, the secondary speed change sliding gear of 6-, the 7-low speed ring gear, the low-grade driven gear of the secondary speed change of 8-, 9-bearing, the 10-main drive shaft, the secondary speed change intermediate gear shaft of 11-, 11-1-driver pinion, the middle-grade driving gear of 11-2-, 11-3-is gearwheel initiatively, the secondary gear shift fork of 12-, 13-gearbox casing.
Embodiment
See shown in Figure 1, the secondary trasmission shifting system of gear box of tractor of the present utility model, comprise by bearing and be bearing in secondary speed change intermediate gear shaft 11 on the gearbox casing 13, and be bearing in second 2 and main drive shaft 10 on the gearbox casing 13, be provided with initiatively gearwheel 11-3 on the secondary speed change intermediate gear shaft 11 successively, middle-grade driving gear 11-2 and driver pinion 11-1, be connected with input shaft 1 by gear pair for second 2, with transmission of power to the second spools 2, be connected by fore bearing 3 with main drive shaft 10 for second 2, secondary speed change slide teeth wheel seat 5 is installed on this main drive shaft 10, secondary speed change sliding gear 6 splines that are provided with allocating slot are connected on the secondary speed change slide teeth wheel seat 5, the secondary gear shift fork 12 that is installed on the declutch shift shaft is inserted in the allocating slot of secondary speed change sliding gear 6, controls secondary speed change sliding gear 6 and moves axially.See shown in Figure 1, the low-grade driven gear 8 of secondary speed change of the present utility model is installed on the main drive shaft 10 and with driver pinion 11-1 by outer bearing 9 and often meshes, small gear on active gearwheel 11-3 on the secondary speed change intermediate gear shaft 11 and second 2 often meshes, high speed gear ring 4 on second 2 is corresponding with the internal tooth of secondary speed change sliding gear 6 with the low speed ring gear 7 on the low-grade driven gear 8 of secondary speed change, middle-grade driving gear 11-2 is corresponding with the external tooth of secondary speed change sliding gear 6, the interior edge face that the utility model is second 2 is provided with the shaft shoulder, high speed gear ring 4 is crimped on second 2 the shaft shoulder, and low speed ring gear 7 is made one with the low-grade driven gear 8 of secondary speed change.
High-grade output: when secondary speed change sliding gear 6 moves to left, secondary speed change sliding gear 6 and high speed gear ring 4 and secondary speed change slide teeth wheel seat 5 on second 2 are meshed, power is passed to main drive shaft 10 through second 2.
Middle-grade output: when secondary speed change sliding gear 6 and middle-grade driving gear 11-2 engagement, the gear of power on second 2 and active gearwheel 11-3 reach main drive shaft 10 by the middle-grade driving gear 11-2 on the secondary speed change intermediate gear shaft 11, secondary speed change sliding gear 6 again.
Low-grade output: when secondary speed change sliding gear 6 moves to right, make low speed ring gear 7 engagements on the low-grade driven gear 8 of secondary speed change sliding gear 6 and secondary speed change, power is passed on the secondary speed change intermediate gear shaft 11 through gear on second 2 and active gearwheel 11-3, low-grade driven gear 8 engagements of driver pinion 11-1 and secondary speed change, make secondary speed change slide teeth wheel seat 5 engagements, be passed to main drive shaft 10 by secondary speed change slide teeth wheel seat 5.
Claims (2)
1. the secondary trasmission shifting system of a gear box of tractor, comprise by bearing and be bearing in the secondary speed change intermediate gear shaft (11) on the gearbox casing (13) and be bearing in second (2) and main drive shaft (10) on the gearbox casing (13), main drive shaft (10) is connected with second (2) by fore bearing (3), it is characterized in that: be provided with initiatively gearwheel (11-3) on the described secondary speed change intermediate gear shaft (11) successively, middle-grade driving gear (11-2) and driver pinion (11-1), secondary speed change slide teeth wheel seat (5) is installed on the main drive shaft (10), secondary speed change sliding gear (6) spline that is provided with allocating slot is connected on the secondary speed change slide teeth wheel seat (5), the secondary low-grade driven gear of speed change (8) is installed in main drive shaft (10) by outer bearing (9) and upward and with driver pinion (11-1) is normal meshes, initiatively the small gear on gearwheel (11-3) and second (2) often meshes, low speed ring gear (7) on the low-grade driven gear of high speed gear ring (4) on second (2) and secondary speed change (8) is corresponding with the internal tooth of secondary speed change sliding gear (6), and middle-grade driving gear (11-2) is corresponding with the external tooth of secondary speed change sliding gear (6).
2. the secondary trasmission shifting system of gear box of tractor according to claim 1, it is characterized in that: the interior edge face of described second (2) is provided with the shaft shoulder, and high speed gear ring (4) is crimped on the shaft shoulder of second (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202559039U CN201568537U (en) | 2009-11-27 | 2009-11-27 | Tractor change gear case counter transmission shifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202559039U CN201568537U (en) | 2009-11-27 | 2009-11-27 | Tractor change gear case counter transmission shifting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201568537U true CN201568537U (en) | 2010-09-01 |
Family
ID=42660823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202559039U Expired - Fee Related CN201568537U (en) | 2009-11-27 | 2009-11-27 | Tractor change gear case counter transmission shifting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201568537U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901755A (en) * | 2021-03-05 | 2021-06-04 | 江苏沃得农业机械配件制造有限公司 | Variable-speed threshing transmission case |
-
2009
- 2009-11-27 CN CN2009202559039U patent/CN201568537U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901755A (en) * | 2021-03-05 | 2021-06-04 | 江苏沃得农业机械配件制造有限公司 | Variable-speed threshing transmission case |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 Termination date: 20171127 |