CN201031931Y - Tractor gear box of 12+4 gear - Google Patents
Tractor gear box of 12+4 gear Download PDFInfo
- Publication number
- CN201031931Y CN201031931Y CNU2007200366583U CN200720036658U CN201031931Y CN 201031931 Y CN201031931 Y CN 201031931Y CN U2007200366583 U CNU2007200366583 U CN U2007200366583U CN 200720036658 U CN200720036658 U CN 200720036658U CN 201031931 Y CN201031931 Y CN 201031931Y
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Abstract
The utility model relates to a tractor gear box which is provided with 12 plus 4 gears; the utility model comprises a gear shifting mechanism and a gear shift operating mechanism which is arranged on the gear box; the gear shifting mechanism consists of a main gear shifting mechanism and an auxiliary gear shifting mechanism; the main gear shifting mechanism comprises an input shaft, a second shaft and a gear, a low-speed meshed tooth base and a synchronous base which are connected with every shaft; the auxiliary gear shifting mechanism comprises an auxiliary gear shift shaft which is coaxially arranged with the input shaft, an output shaft which is coaxially arranged with the second shaft and gears which are arranged on every shaft; the output shaft is also equipped with a high and middle-gear meshed tooth base and a low and reverse-gear meshed tooth base; a reverse intermediate gear which is arranged in the middle of the reverse gear is meshed with a reverse driven gear. The utility model increases the gears of the gear box to the number of 12 plus 4 by adjusting the positions of every gear on the basis that the gear box volume is not increased, a plurality of operations of the tractor are met.
Description
Technical field
The utility model relates to a kind of wheeled tractor gearbox, especially relates to the gear box of tractor that four axles of a kind of two-part constitute the 12+4 gear.
Background technique
Tractor satisfies the several work function of tractor by variable transmission mechanism, be a kind of very general current techique at present, the gearbox of wheeled tractor is two section four axle construction mostly, the speed change gear has only 8+2 or 8+4 gear, the gear that this gearbox provided can not satisfy the needs of tractor in various conditions distinguishingly and special operation, seems that also Economy is too poor even satisfy, and efficient is very low, influence the normal operation of tractor greatly, fettered the normal use of tractor.
Summary of the invention
The utility model provides a kind of can satisfy the tractor several work, and simple in structure, the gear box of tractor of lower-cost 12+4 gear.
The utility model for the technological scheme that achieves the above object is: a kind of gear box of tractor of 12+4 gear, comprise the gear and the selector device that are arranged on the gearbox casing, it is characterized in that: described gear is made up of main speed-changing mechanism and secondary gear, main speed-changing mechanism comprises input shaft, second and be connected to three driving gears on the input shaft in turn and be arranged on second and go up four corresponding driven gears, second is positioned at first, low speed engagement toothholder is installed between the second gear driven gear, and input shaft is positioned at third speed drive gear one side sync block is installed; Described secondary gear comprises and the coaxial mounted secondary variable-speed shaft of input shaft, with second coaxial mounted output shaft and the gear that is installed on each, on the secondary variable-speed shaft fourth gear driving gear is installed successively, the middle-grade driving gear of secondary speed change, the low-grade driving gear of reverse driving gear and secondary speed change, correspondence is equipped with the middle-grade driven gear of secondary speed change on the output shaft, the low-grade driven gear of reverse gear driven gear and secondary speed change, and height is housed also on the output shaft, middle-grade engagement toothholder and low, reverse gear engagement toothholder is installed in reverse idler gear and reverse gear master on the reverse gear jack shaft, driven gear often meshes; Described selector device comprises main transformer speed operating mechanism and the secondary selector gear that is installed on the gearbox casing, low speed shifter collar and synchronizing ring that main transformer speed operating mechanism comprises slide bar and is connected with slide bar, low speed shifter collar and synchronizing ring are corresponding with low speed engagement toothholder and sync block respectively, secondary speed changing operating mechanism comprises slide bar and the height that is connected with slide bar, middle-grade shifter collar and low, reverse gear shifter collar, high, middle-grade shifter collar and low, reverse gear shifter collar respectively with high, middle-grade engagement toothholder and low, that reverse gear meshes toothholder is corresponding.
Three pairs of gears on its input shaft of gearbox of the present utility model and second are as preceding three class gear shift, the fourth gear driving gear then is installed on the secondary variable-speed shaft, with the fourth gear driving gear as composite gear, secondary gear is an one with basic, normal, high and reverse gear collection, under the volume that does not increase gearbox, by adjusting each shifting gear position, make the gear of gearbox can increase to 12+4.Because the driving gear in the gearbox reduces to minimum, reduced manufacture cost, has superior cost performance, the gear box of tractor structure is compact more, the gearbox transmission speed is more reasonable, can satisfy the requirement of tractor to various facility operations, and the effect of tractor is more effectively brought into play, Economy is more outstanding, can satisfy the needs of tractor to some special operations especially.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is the structural representation of gearbox of the present utility model.
1-input shaft wherein, 2-the second, 3-secondary variable-speed shaft, 4-output shaft, 5-one grade of driving gear, 6-second gear driving gear, 7-sync block, 7a-synchronizing ring, 8-third speed drive gear, 9-one grade of driven gear, 10-second gear driven gear, 11-low speed engagement toothholder, 11a-low speed shifter collar, 12-third gear driven gear, 13-fourth gear driven gear, 14-fourth gear driving gear, the low-grade driving gear of 15-secondary speed change, the middle-grade driving gear of 16-secondary speed change, 17-reverse driving gear, the middle-grade driven gear of 18-secondary speed change, 19-reverse gear driven gear, the low-grade driven gear of 20-secondary speed change, 21-height, middle-grade engagement toothholder, 21a-height, middle-grade shifter collar, 22-low, reverse gear engagement toothholder, 22a-low, the reverse gear shifter collar, 23-reverse idler gear, 24-reverse gear jack shaft.
Embodiment
The gear box of tractor of the utility model 12+4 gear comprises gear and the selector device that is arranged on the gearbox casing, and gearbox is four axle 12+4 of two-part structure.See shown in Figure 1ly, gear of the present utility model is made up of main speed-changing mechanism and secondary gear, main speed-changing mechanism comprise input shaft 1, second spool 2 and be installed in input shaft 1 and second 2 on each driving gear.Three driving gears are housed on the input shaft 1 successively constitute third speed drive gear, one grade of driving gear 5 is structure as a whole with input shaft 1, second gear driving gear 6 and sync block 7 are connected on the input shaft 1 by spline, 8 of third speed drive gears are sleeved on the input shaft 1, sync block 7 is between third speed drive gear 8 and fourth gear driving gear 14, by synchronizing ring 7a control three class gear shift or four-speed gear shift.Four corresponding driven gears are housed on second 2, one grade of driven gear 9 and second gear driven gear 10 are sleeved on second 2 by axle sleeve, and low speed engagement toothholder 11, third gear driven gear 12 and fourth gear driven gear 13 splines are connected on second 2, low speed engagement toothholder 11 is between first grade of driven gear 9 and second gear driven gear 10, by one grade of speed change of low speed shifter collar l1a control and second gear speed change, one grade of driving gear 5 and one grade of driven gear 9 often mesh, second gear driving gear 6 often meshes with second gear driven gear 10, and third speed drive gear 8 often meshes with third gear driven gear 12.
See that secondary gear of the present utility model shown in Figure 1 comprises with input shaft 1 coaxial mounted secondary variable-speed shaft 3, with second 2 coaxial mounted output shaft 4 be installed in gear on each.The low-grade driving gear 15 of fourth gear driving gear 14, the middle-grade driving gear 16 of secondary speed change, reverse driving gear 17 and secondary speed change is installed on the secondary variable-speed shaft 3 successively, and the low-grade driving gear 15 of fourth gear driving gear 14 and secondary speed change is structure as a whole with secondary variable-speed shaft 3, and secondary variable-speed shaft 3 is positioned at fourth gear driving gear 14 1 sides and is connected on the input shaft 1 by bearing supporting, and the middle-grade driving gear 16 of secondary speed change and 17 splines of reverse driving gear are connected on the secondary variable-speed shaft 3.Correspondence is equipped with the middle-grade driven gear 18 of secondary speed change on the output shaft 4, low-grade driven gear 20 of reverse gear driven gear 19 and secondary speed change and height, middle-grade engagement toothholder 21 and low, reverse gear engagement toothholder 22, high, middle-grade engagement toothholder 21, middle-grade secondary speed change driven gear 18, reverse gear driven gear 19 and low-grade secondary speed change driven gear 20 are sleeved on the output shaft 4, and it is low, 22 of reverse gear engagement toothholders are fixedly connected on the output shaft 4 by spline, fourth gear driving gear 14 often meshes with fourth gear driven gear 13, the middle-grade driving gear 16 of secondary speed change often meshes with the middle-grade driven gear 18 of secondary speed change, the low-grade driving gear 15 of secondary speed change often meshes with the low-grade driven gear 20 of secondary speed change, the reverse idler gear 23 that is installed on the reverse gear jack shaft 24 often meshes with reverse gear driven gear 19, and gearbox of the present utility model is fast and high by the main transformer of four gears, in, the secondary speed change of three gears of low speed and reverse gear is formed the output of 12+4 gear.
Selector device of the present utility model comprises main transformer speed operating mechanism and secondary selector gear, main transformer speed operating mechanism comprises the slide bar that is installed on the gearbox casing and the low speed shifter collar 11a that is connected with slide bar and synchronizing ring 7a, low speed shifter collar 11a and synchronizing ring 7a are corresponding with low speed engagement toothholder 11 and sync block 7 respectively, make low speed shifter collar 11a and one grade of driven gear 9 and 10 engagements of second gear driven gear or throw off by slide bar, or synchronizing ring 7a and third speed drive gear 8 and 14 engagements of fourth gear driving gear or disengagement, to change the output of main speed-changing mechanism rotating speed.Secondary selector gear of the present utility model comprises slide bar and is connected the height on the slide bar, middle-grade shifter collar 21a and low, reverse gear shifter collar 22a, high, middle-grade shifter collar 21a and low, reverse gear shifter collar 22a respectively with high, middle-grade engagement toothholder 21 and low, reverse gear engagement toothholder 22 is corresponding, high, middle retaining shifter collar 21a and second 2 and 18 engagements of middle retaining driven gear or throw off, or low, reverse gear shifter collar 22a and low gear driven gear 20 and reverse gear driven gear 19 engagements or disengagement are to change the output of secondary gear rotating speed.
The output of main transformer speed:
One grade of output: when low-grade shifter collar 11a and one grade of driven gear 9 engagement, synchronizing ring 7a throws off, and this moment, drive path was: 5 → one grades of driven gears 9 of 1 → one grade of driving gear of input shaft → low-grade shifter collar 11a → 11 → the second 2 → secondary gear of low grade engagement toothholder.
Second gear output: when low- grade shifter collar 11a and 10 engagements of second gear driven gear, synchronizing ring 7a throws off, and this moment, drive path was: input shaft 1 → second gear driving gear 6 → second gear driven gear 10 → low-grade shifter collar 11a → 11 → the second 2 → secondary gear of low grade engagement toothholder.
Third gear output: when low-grade shifter collar 11a disengagement, synchronizing ring 7a and third speed drive gear 8 engagements, this moment, drive path was: 12 → the second 2 → secondary gear of input shaft 1 → synchronizing ring 7a → sync block 7 → third speed drive gear 8 → third gear driven gear.
Fourth gear output: when low-grade shifter collar 11a disengagement, synchronizing ring 7a and 14 engagements of fourth gear driving gear, this moment, drive path was: 12 → the second 2 → secondary gear of input shaft 1 → synchronizing ring 7a → sync block 7 → fourth gear driving gear 14 → fourth gear driven gear.
Secondary speed change output:
High-grade output: as high, middle-grade shifter collar 21a and second 2 engagement, and low, reverse gear shifter collar 22a disengagement, second 2 → height, middle-grade shifter collar 21a → height, middle-grade engagement toothholder 21 → output shaft 4.
Middle-grade output: when height, middle- grade shifter collar 21a and 18 engagements of middle retaining driven gear, and low, reverse gear shifter collar 22a throws off, the second middle-grade driving gear 16 of 2 → fourth gear driven gear, 13 → fourth gear driving gear, the 14 → secondary speed change → middle-grade driven gear 18 of secondary speed change → height, middle-grade shifter collar 21a → height, middle-grade engagement toothholder 21 → output shaft 4.
Low-grade output: when high, middle-grade shifter collar 21a throws off, and low-grade driven gear 20 engagements of low, reverse gear shifter collar 22a and secondary speed change, the second low-grade driving gear 15 of 2 → fourth gear driven gear, 13 → fourth gear driving gear 14 → secondary speed change → low-grade driven gear 20 of secondary speed change → low, reverse gear shifter collar 22a → low, reverse gear engagement toothholder 22 → output shaft 4.
Reverse gear output: when high, middle-grade shifter collar 21a throws off, and low, reverse gear shifter collar 22a and 19 engagements of reverse gear driven gear, second 2 → fourth gear driven gear, 13 → fourth gear driving gear, 14 → reverse driving gear, 17 → reverse idler gear, 23 → reverse gear driven gear 19 → low, reverse gear shifter collar 22a → low, reverse gear engagement toothholder 22 → output shaft 4.
Claims (4)
1. the gear box of tractor of a 12+4 gear, comprise the gear and the selector device that are arranged in the gearbox casing, it is characterized in that: described gear is made up of main speed-changing mechanism and secondary gear, main speed-changing mechanism comprises input shaft (1), second (2) and be connected to three driving gears on the input shaft (1) in turn and be arranged on second (2) and go up four corresponding driven gears, second (2) are positioned at first, low speed engagement toothholder (11) is installed between the second gear driven gear, and input shaft (1) is positioned at three, fourth gear driving gear (8) one sides are equipped with sync block (7); Described secondary gear comprises and the coaxial mounted secondary variable-speed shaft of input shaft (1) (3), with second (2) coaxial mounted output shaft (4) be installed in gear on each, on the secondary variable-speed shaft (3) fourth gear driving gear (14) is installed successively, the secondary middle-grade driving gear of speed change (16), the low-grade driving gear (15) of reverse driving gear (17) and secondary speed change, output shaft (4) is gone up correspondence the middle-grade driven gear of secondary speed change (18) is installed, the low-grade driven gear (20) of reverse gear driven gear (19) and secondary speed change, and output shaft also is equipped with height on (4), middle-grade engagement toothholder (21) and low, reverse gear engagement toothholder (22) is installed in reverse idler gear (23) and the normal engagement of reverse gear driven gear (19) on the reverse gear jack shaft (24); Described selector device comprises main transformer speed operating device and the secondary speed changing operating mechanism that is installed on the gearbox casing, main transformer speed operating device comprises slide bar and low speed shifter collar (11a) that is connected with slide bar and synchronizing ring (7a), low speed shifter collar (11a) and synchronizing ring (7a) are corresponding with low speed engagement toothholder (11) and sync block (7) respectively, secondary speed changing operating mechanism comprises slide bar and the height that is connected with slide bar, middle-grade shifter collar (21a) and low, reverse gear shifter collar (22a), height, middle-grade shifter collar (21a) and low, reverse gear shifter collar (22a) respectively with height, middle-grade engagement toothholder (21) and low, reverse gear engagement toothholder (22) is corresponding.
2. the gear box of tractor of 12+4 gear according to claim 1, it is characterized in that: the one grade of driving gear (5) that has one on the described input shaft (1), second gear driving gear (6) and three, fourth gear engagement toothholder (7) are connected on the input shaft (1) by spline, and third speed drive gear (8) is sleeved on the input shaft (1); One grade of driven gear (9) and second gear driven gear (10) are sleeved on second (2), and low speed engagement toothholder (11), third gear driven gear (12) and fourth gear driven gear (13) spline are connected on second (2), and one grade of driving gear (5) and one grade of driven gear (9), second gear driving gear (6) and second gear driven gear (10) and third speed drive gear (8) and the normal engagement of third gear driven gear (12).
3. the gear box of tractor of 12+4 gear according to claim 1, it is characterized in that: the fourth gear driving gear (14) and the low-speed active gear (15) that have one on the described secondary variable-speed shaft (3), middle-grade driving gear (16) and reverse driving gear (17) spline are connected on the secondary variable-speed shaft (3), high, middle-grade engagement toothholder (21), middle-grade driven gear (18), reverse gear driven gear (19) and low-grade driven gear (20) are sleeved on the output shaft (4), low, reverse gear engagement toothholder (22) spline is connected on the output shaft (4), and fourth gear driving gear (14) and the normal engagement of fourth gear driven gear (13), the middle-grade driving gear of secondary speed change (16) and the middle-grade driven gear of secondary speed change (18) and low-grade driving gear of secondary speed change (15) and the normal engagement of the low-grade driven gear of secondary speed change (20).
4. the gear box of tractor of 12+4 gear according to claim 3 is characterized in that: described secondary variable-speed shaft (3) is positioned at fourth gear driving gear (14) one sides and is connected on the input shaft (1) by the bearing supporting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200366583U CN201031931Y (en) | 2007-04-09 | 2007-04-09 | Tractor gear box of 12+4 gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200366583U CN201031931Y (en) | 2007-04-09 | 2007-04-09 | Tractor gear box of 12+4 gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201031931Y true CN201031931Y (en) | 2008-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200366583U Expired - Fee Related CN201031931Y (en) | 2007-04-09 | 2007-04-09 | Tractor gear box of 12+4 gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201031931Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821883A (en) * | 2014-03-04 | 2014-05-28 | 东风商用车有限公司 | Solid shaft synchronous double-intermediate-shaft transmission structure and gear shifting method thereof |
| CN104864058B (en) * | 2015-05-29 | 2017-07-25 | 山东东汽农业装备有限公司 | A kind of 12+3 grades of gearbox |
-
2007
- 2007-04-09 CN CNU2007200366583U patent/CN201031931Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821883A (en) * | 2014-03-04 | 2014-05-28 | 东风商用车有限公司 | Solid shaft synchronous double-intermediate-shaft transmission structure and gear shifting method thereof |
| CN104864058B (en) * | 2015-05-29 | 2017-07-25 | 山东东汽农业装备有限公司 | A kind of 12+3 grades of gearbox |
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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 |
Granted publication date: 20080305 Termination date: 20150409 |
|
| EXPY | Termination of patent right or utility model |