CN201496485U - Variable speed driving device for wheeled tractor - Google Patents
Variable speed driving device for wheeled tractor Download PDFInfo
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- CN201496485U CN201496485U CN2009202273173U CN200920227317U CN201496485U CN 201496485 U CN201496485 U CN 201496485U CN 2009202273173 U CN2009202273173 U CN 2009202273173U CN 200920227317 U CN200920227317 U CN 200920227317U CN 201496485 U CN201496485 U CN 201496485U
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- 230000009471 action Effects 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 2
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- 210000003464 cuspid Anatomy 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model discloses a variable speed driving device for a wheeled tractor, comprising a first shaft gear driving system, a second shaft gear driving system, a reverse shaft gear driving system, a high-low level engaging gear device, a fork system, a speed-changing operation rod and a housing, and eight forward gear stages and two reverse gear stages can be achieved though the fork striking different sliding gears and high-low level engaging gears (19). The utility model achieves multiple gear stages and has the advantages of simple structure, reasonable driving ratio, high driving efficiency, safe operation, comfort and reliability and reduced tired strength of a driver.
Description
Technical field
The utility model relates to the variable speed drive of wheeled tractor.
Background technique
Current, along with China is increasing to the support dynamics of agriculture, rural areas and farmers policy, the wheeled tractor of mid power (hereinafter to be referred as tractor) shared ratio in various agricultural machinery and implement begins in rising trend, for great role is played in the development of China's agricultural modernization.The tractor rear axle noise is generally higher but users are in use also reflected current China, is unfavorable for long working, and each gear speed can not adapt to different job requirements fully.Be accompanied by the raising of people's material life condition and use the variation of idea, have higher requirement for the tractor variable speed drive: low noise, speed ratio rationally reach handle comfortable, reliability is high.
Summary of the invention
Problem to be solved in the utility model is that each gear ratios of solution tractor variable speed drive is unreasonable, the back axle noise is generally higher, is unfavorable for defectives such as long working, operation comfort and poor reliability.
For achieving the above object, the utility model provides a kind of wheeled tractor variable speed drive, comprises one of power input, two of power output, declutch shift shaft, shift and housing, also comprises:
I-reverse speed fork 2, III shelves shift fork 5, II-IV shelves shift fork 6, high and low shift shift fork 9 are fixedly mounted on respectively on the corresponding declutch shift shaft 16;
I-reverse gear sliding gear 3, III shelves sliding gear 4, II-IV shelves sliding gear 7, high and low shift duplicate gear 8 are seen from the A end and are installed in successively on one 1; Wherein I-reverse gear sliding gear 3, III shelves sliding gear 4, II-IV shelves sliding gear 7 can endwisely slip, circumferentially fix in one of the lower edge of stirring of corresponding I-reverse speed fork 2, III shelves shift fork 5, II-shelves shift fork 6; High and low shift duplicate gear 8 is circumferentially rotatable, axial restraint on one;
Two axle sleeves 21, high and low shift fixedly toothholder 20, low-grade driven gear 18 are seen from the A end and are installed in successively on two 15; Two axle sleeves 21 can circumferentially rotate on two 15, see successively circumferentially, be furnished with axial restraint I shelves driven gear 26, III shelves driven gear 25, II shelves driven gear 24, IV shelves driven gear 27, low-grade driving gear 28, high-grade driven gear 29 from A end on it, corresponding with I-reverse gear sliding gear 3, III shelves sliding gear 4, II-IV shelves sliding gear 7, II-IV shelves sliding gear 7, high and low shift duplicate gear 8, high and low shift engaging gear 19 respectively; High and low shift fixedly toothholder 20 can not be on two 15 circumferentially rotates, high and low shift engaging gear 19 by stirring of high and low shift shift fork 9 can realize respectively with low-grade driven gear 18, high and low shift fixedly toothholder 20 mesh simultaneously and with high-grade driven gear 29, high and low shift fixedly toothholder 20 mesh simultaneously; Low-grade driven gear 18 circumferentially rotatable, axial restraint on two 2;
The utility model technique scheme has realized the transmission scheme of 8 forward gearss, 2 reverse gears, on the basis of not improving the Gear Processing precision, the multiple gear ratios of reasonable distribution, reduce the reverse gear rotating speed, the back axle noise significantly reduces, and is beneficial to long working, has improved operation comfort and reliability, increase the mechanical safety of vehicle driving process, thoroughly removed driver's trouble and worry.
Description of drawings
Fig. 1 is the structural front view of wheeled tractor variable speed drive.
Fig. 2 is a wheeled tractor variable speed drive C-C place sectional view.
Fig. 3 is a wheeled tractor variable speed drive B-B place sectional view.
Wherein: 1, one 2, I-reverse speed fork 3, I-reverse gear sliding gear 4, III shelves sliding gear 5, III shelves shift fork 6, II-IV shelves shift fork 7, II-IV shelves sliding gear 8, high and low shift duplicate gear 9, high and low shift shift fork 10, lock shaft soldering member 11, lock shaft bearing 12, spring 13, spring bolt 14, steel ball 15, two 16, declutch shift shaft 17, low-grade gear lining 18, low-grade driven gear 19, high and low shift engaging gear 20, high and low shift is toothholder 21 fixedly, two axle sleeves 22, reverse gear 23, reverse gear shaft 24, II shelves driven gear 25, III shelves driven gear 26, I shelves driven gear 27, IV shelves driven gear 28, low-grade driving gear 29, high-grade driven gear
Embodiment
Below in conjunction with the drawings and specific embodiments technical solutions of the utility model being described in detail, with purpose, scheme and the effect of further understanding the utility model, but is not as the restriction to the utility model claims protection domain.
According to Fig. 1, Fig. 2, shown in Figure 3, the utility model comprises a shaftgear power train, two shaftgear power trains, reverse gear shaft pinion unit, high and low shift engaging gear device, shift fork system, gear backset device, shift and housing, and the technical solution of the utility model is:
I-reverse speed fork 2, III shelves shift fork 5, II-IV shelves shift fork 6, high and low shift shift fork 9 are fixedly mounted on respectively on the corresponding declutch shift shaft 16; I-reverse gear sliding gear 3, III shelves sliding gear 4, II-IV shelves sliding gear 7, high and low shift duplicate gear 8 are seen from the A end and are installed in successively on one 1; Wherein I-reverse gear sliding gear 3, III shelves sliding gear 4, II-IV shelves sliding gear 7 can endwisely slip, circumferentially fix in one of the lower edge of stirring of corresponding I-reverse speed fork 2, III shelves shift fork 5, II-IV shelves shift fork 6; High and low shift duplicate gear 8 is circumferentially rotatable, axial restraint on one; Two axle sleeves 21, high and low shift fixedly toothholder 20, low-grade driven gear 18 are seen from the A end and are installed in successively on two 15; Two axle sleeves 21 can circumferentially rotate on two 15, see successively circumferentially, be furnished with I shelves driven gear 26, III shelves driven gear 25, II shelves driven gear 24, IV shelves driven gear 27, low-grade driving gear 28, high-grade driven gear 29, axial restraint from the A end on it respectively with I-reverse gear sliding gear 3, III shelves sliding gear 4, II-IV shelves sliding gear 7, II-IV shelves sliding gear 7, high and low shift duplicate gear 8, the 19 corresponding engagements of high and low shift engaging gear; High and low shift fixedly toothholder 20 can not circumferentially rotate on two 15, high and low shift engaging gear 19 is realized low-grade when fixedly toothholder 20 meshes simultaneously by stirring with low-grade driven gear 18, high and low shift of high and low shift shift fork 9, realize top grade when fixedly toothholder 20 meshes simultaneously with high-grade driven gear 29, high and low shift; Low-grade driven gear 18 circumferentially rotatable, axial restraint on two 2; Reverse gear 22 can rotate in a circumferential direction, be installed on the reverse gear shaft 23 axial restraint, and when toggling it to reverse gear position by I-reverse speed fork 2, reverse gear 22 simultaneously and I-reverse gear sliding gear 3,25 engagements of III shelves driven gear.
The action of clutch pedal is converted into rotatablely moving of lock shaft soldering member 10 by push rod, and steel ball 14 and spring 12 that lock shaft soldering member 10 is pushed down on declutch shift shaft 16 arc grooves support the spring bolt 13 of getting up; When clutch pedal was lifting, the arc surface of lock shaft soldering member 10 was tight, can not shift gears; When clutch pedal under when stepping on, the planar section of lock shaft soldering member 10 can gear shift corresponding to spring bolt 13.
Two axle sleeves 21 are splined shaft, see by two spacers and round nut from A end on its spline to be with I shelves driven gear 26, III shelves driven gear 25, II shelves driven gear 24 successively; IV shelves driven gear 27, low-grade driving gear 28, high-grade driven gear 29 and two axle sleeves 21 be processed as one or with two axle sleeves 21 axially, circumferentially be fixedly connected.
I-reverse gear sliding gear 3, III shelves sliding gear 4, II-IV shelves sliding gear 7 with one 1 between be that the spline slippage connects.High and low shift duplicate gear 8 is to be positioned on one 1 by a bearing and one group of needle roller.Be by two groups of needle rollers supportings between two axle sleeves 21 and two 15.Reverse gear 22 is single gear.One group of needle roller of reverse gear 22 usefulness or a composite bush are bearing on the reverse gear shaft 23.Low-grade driven gear 18 is implemented in circumferentially rotation on two 2 by the supporting of low-grade gear lining 17 or two groups of needle rollers.High and low shift engaging gear 19 is internal gear type engagement nested structure.
After the position of original II shelves driven gear and III shelves driven gear adjusted, one group of gear of former duplex structure reverse gear place that is out of use, be improved to the reverse gear 22 after list is organized gear, simultaneously each gear parameter of fastening with two shaft drive is adjusted and rational deployment, not only make reverse gear 22 rotating speeds of normal engagement be reduced to below the 3500r/min greatly, reach the noise reduction purpose, and the speed when high speed reverse surpasses 10km/h, satisfy the demand of transportation or unloaded reversing, improved working efficiency.
According to Fig. 1, Fig. 2, shown in Figure 3, the drive path of the drive part of this wheeled tractor variable speed drive is:
1, I shelves drive path: secondary speed change lever is placed low gear position, handle main shift lever, stir I-reverse speed fork 2 to I gears and put the kinetic current warp: 1 → I-reverse gear sliding gear, 3 → I shelves driven gear, 26 → two axle sleeves 21 → low-grade driving gear 28 → high and low shift duplicate gear 8 → low-grade driven gear 18 → high and low shift engaging gear 19 → high and low shift is 20 → two 15 → differential mechanism canine tooths of toothholder fixedly;
2, II shelves drive path: secondary speed change lever is placed low gear position, handle main shift lever, stir II-IV shelves shift fork 6 to II gears and put the kinetic current warp: 1 → II-IV shelves sliding gear, 7 → II shelves driven gear, 24 → two axle sleeves 21 → low-grade driving gear 28 → high and low shift duplicate gear 8 → low-grade driven gear 18 → high and low shift engaging gear 19 → high and low shift is 20 → two 15 → differential mechanism canine tooths of toothholder fixedly;
3, III shelves drive path: secondary speed change lever is placed low gear position, handle main shift lever, stir III shelves shift fork 5 to III gears and put the kinetic current warp: 1 → III shelves sliding gear, 4 → III shelves driven gear, 25 → two axle sleeves 21 → low-grade driving gear 28 → high and low shift duplicate gear 8 → low-grade driven gear 18 → high and low shift engaging gear 19 → high and low shift is 20 → two 15 → differential mechanism canine tooths of toothholder fixedly;
4, IV shelves drive path: secondary speed change lever is placed low gear position, handle main shift lever, stir II-IV shelves shift fork 6 to IV gears and put the kinetic current warp: 1 → II-IV shelves sliding gear, 7 → IV shelves driven gear, 27 → two axle sleeves 21 → low-grade driving gear 28 → high and low shift duplicate gear 8 → low-grade driven gear 18 → high and low shift engaging gear 19 → high and low shift is 20 → two 15 → differential mechanism canine tooths of toothholder fixedly;
5, low reverse gear drive path: secondary speed change lever is placed low gear position, handle main shift lever, stir I-reverse speed fork 2 to reverse gear position, the kinetic current warp: 1 → I-reverse gear sliding gear, 3 → reverse gear, 22 → III shelves driven gear, 25 → two axle sleeves 21 → low-grade driving gear 28 → high and low shift duplicate gear 8 → low-grade driven gear 18 → high and low shift engaging gear 19 → high and low shift is 20 → two 15 → differential mechanism canine tooths of toothholder fixedly;
When 6, secondary shift places high-grade position, when main transformer speed operating handle places above-mentioned gear, corresponding in above-mentioned each grade drive path " → low-grade driving gear 28 → high and low shift duplicate gear 8 → low-grade driven gear 18 " being replaced by " → high-grade driven gear 29 " is exactly required gear, here no longer narration.
7, backset part: each grade shift fork is fixing on corresponding declutch shift shaft 16, stirs shift fork or shifting block by shift and drives declutch shift shaft 16 and move axially the realization gear-change operation.Lock shaft seam 10 is fastened on the gearbox face of covering of going forward by lock shaft bearing 11, and push down on the spring bolt 13 that steel ball 14 on declutch shift shaft 16 arc grooves and spring 12 supportings get up, lock shaft soldering member 10 links with clutch push rod with clutch arm, plays the effect of clutch separation.Under nature, lock shaft soldering member 10 is by the thrust of clutch push rod, and its arc surface is pressed on above the spring bolt 13 all the time, and declutch shift shaft can not be moved, and reaches the purpose of gear locking.In practical operation, the driver depresses clutch pedal, drive 10 rotations of lock shaft soldering member by the clutch push rod that links to each other, lock shaft soldering member 10 overcomes the pressure rotation of spring 12, after rotating to a last planar section, it is free movable with the resistance of spring 12 that spring 12 elongations, declutch shift shaft 16 can overcome steel ball 14, at this moment can realize gear-change operation.Behind shift end, unclamp clutch pedal, lock shaft seam 10 is returning position under the thrust of clutch push rod, has locked gear.
More than all these structural designs all make every effort to simple in structure, gear is many, travelling speed is reasonable, the transmission efficiency height, have handling safety, comfortable reliable, alleviate advantage such as driver fatigue intensity, be specially adapted to 25～50 horsepowers of section gear box of tractor systems.
Though the utility model discloses as above with a preferred embodiment; right its is not in order to limit the present invention; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (10)
1. a wheeled tractor variable speed drive comprises (1) of power input, two (15), declutch shift shaft (16), shift and the housing of power output, it is characterized in that:
I-reverse speed fork (2), III shelves shift fork (5), II-IV shelves shift fork (6), high and low shift shift fork (9) are fixedly mounted on respectively on the corresponding declutch shift shaft (16);
I-reverse gear sliding gear (3), III shelves sliding gear (4), II-IV shelves sliding gear (7), high and low shift duplicate gear (8) are seen from the A end and are installed in successively on one (1); Wherein I-reverse gear sliding gear (3), III shelves sliding gear (4), II-IV shelves sliding gear (7) can endwisely slip, circumferentially fix in one of the lower edge of stirring of corresponding I-reverse speed fork (2), III shelves shift fork (5), II-shelves shift fork (6); High and low shift duplicate gear (8) is circumferentially rotatable, axial restraint on one;
Two axle sleeves (21), high and low shift fixedly toothholder (20), low-grade driven gear (18) are seen from the A end and are installed in successively on two (15); Two axle sleeves (21) can be gone up circumferentially two (15) and rotate, see successively circumferentially, be furnished with axial restraint I shelves driven gear (26), III shelves driven gear (25), II shelves driven gear (24), IV shelves driven gear (27), low-grade driving gear (28), high-grade driven gear (29) from A end on it, corresponding with I-reverse gear sliding gear (3), III shelves sliding gear (4), II-IV shelves sliding gear (7), II-IV shelves sliding gear (7), high and low shift duplicate gear (8), high and low shift engaging gear (19) respectively; High and low shift fixedly toothholder (20) can not be gone up circumferentially two (15) and rotates, high and low shift engaging gear (19) by stirring of high and low shift shift fork (9) can realize respectively with low-grade driven gear (18), high and low shift fixedly toothholder (20) mesh simultaneously and with high-grade driven gear (29), high and low shift fixedly toothholder (20) mesh simultaneously; Low-grade driven gear (18) circumferentially rotatable, axial restraint on two (2);
Reverse gear (22) can rotate in a circumferential direction, be installed in axial restraint on the reverse gear shaft (23), and when toggling it to reverse gear position, reverse gear (22) meshes with I-reverse gear sliding gear (3), III shelves driven gear (25) simultaneously by I-reverse speed fork (2).
2. wheeled tractor variable speed drive according to claim 1, it is characterized in that: the action of clutch pedal is converted into rotatablely moving of lock shaft soldering member (10) by push rod, and steel ball (14) and spring (12) that lock shaft soldering member (10) is pushed down on declutch shift shaft (16) arc groove support the spring bolt (13) of getting up; When clutch pedal was lifting, the arc surface of lock shaft soldering member (10) was tight, can not shift gears; When clutch pedal under when stepping on, the planar section of lock shaft soldering member (10) can gear shift corresponding to spring bolt (13).
3. wheeled tractor variable speed drive according to claim 1 is characterized in that: two axle sleeves (21) are splined shaft, see from A end on its spline to be with I shelves driven gear (26), III shelves driven gear (25), II shelves driven gear (24) successively; IV shelves driven gear (27), low-grade driving gear (28), high-grade driven gear (29) be processed as one with two axle sleeves (21) or with two axle sleeves (21) axially, circumferentially be fixedly connected.
4. according to claim 1 or 3 described wheeled tractor variable speed drives, it is characterized in that: between I-reverse gear sliding gear (3), III shelves sliding gear (4), II-IV shelves sliding gear (7) and one (1) is that the spline slippage connects.
5. according to claim 1 or 3 described wheeled tractor variable speed drives, it is characterized in that: high and low shift duplicate gear (8) is to be positioned on one (1) by a bearing and one group of needle roller.
6. according to claim 1 or 3 described wheeled tractor variable speed drives, it is characterized in that: be between two axle sleeves (21) and two (15) by two groups of needle roller supportings.
7. according to claim 1 or 3 described wheeled tractor variable speed drives, it is characterized in that: reverse gear (22) is single gear.
8. wheeled tractor variable speed drive according to claim 7 is characterized in that: reverse gear (22) is bearing on the reverse gear shaft (23) with one group of needle roller or a composite bush.
9. according to claim 1 or 3 described wheeled tractor variable speed drives, it is characterized in that: low-grade driven gear (18) is implemented in two (2) upward circumferentially rotation by the supporting of low-grade gear lining (17) or two groups of needle rollers.
10. according to claim 1 or 3 described wheeled tractor variable speed drives, it is characterized in that: high and low shift engaging gear (19) is internal gear type engagement nested structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202273173U CN201496485U (en) | 2009-09-25 | 2009-09-25 | Variable speed driving device for wheeled tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202273173U CN201496485U (en) | 2009-09-25 | 2009-09-25 | Variable speed driving device for wheeled tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496485U true CN201496485U (en) | 2010-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202273173U Expired - Fee Related CN201496485U (en) | 2009-09-25 | 2009-09-25 | Variable speed driving device for wheeled tractor |
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| Country | Link |
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| CN (1) | CN201496485U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276155A (en) * | 2014-05-30 | 2016-01-27 | 广州汽车集团股份有限公司 | Gearshift mechanism |
| CN105351453A (en) * | 2015-12-02 | 2016-02-24 | 凤城市盛翔机械制造有限公司 | Gear box of hay cutter |
-
2009
- 2009-09-25 CN CN2009202273173U patent/CN201496485U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276155A (en) * | 2014-05-30 | 2016-01-27 | 广州汽车集团股份有限公司 | Gearshift mechanism |
| CN105276155B (en) * | 2014-05-30 | 2018-09-28 | 广州汽车集团股份有限公司 | A kind of gearshift |
| CN105351453A (en) * | 2015-12-02 | 2016-02-24 | 凤城市盛翔机械制造有限公司 | Gear box of hay cutter |
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| 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: 20100602 Termination date: 20150925 |
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| EXPY | Termination of patent right or utility model |