CN2878801Y - Speed-variator dedicated for medium heavy-duty car - Google Patents
Speed-variator dedicated for medium heavy-duty car Download PDFInfo
- Publication number
- CN2878801Y CN2878801Y CN 200620100665 CN200620100665U CN2878801Y CN 2878801 Y CN2878801 Y CN 2878801Y CN 200620100665 CN200620100665 CN 200620100665 CN 200620100665 U CN200620100665 U CN 200620100665U CN 2878801 Y CN2878801 Y CN 2878801Y
- Authority
- CN
- China
- Prior art keywords
- gear
- shaft
- housing
- roller bearing
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a gearbox for a middle and-heavy type automobile, which fully utilities the oblique gear transmission to gain the power output when the large speed is more than a small speed with seven forwards and one turn back. Of which the first shaft is set on the housing by the external ring with the hard core column roller bearing in the stop ring. One end of the second is placed on the first shaft inner hole through the full roller bearing and another one is supported on the housing by the external ring with the hard core column roller bearing in the stop ring. The different gears are sleeved to the second shaft through the roller bearing. The synchrotron of the different gears is fixed on the second shaft through the spline on the gear seat; the middle shaft is supported on the housing through the column roller bearing. The different gears on the middle shaft are relatively meshed with the different gears on the second shaft one and one; the inertia wheel spindle is directly supported on the housing. The inertia wheel is mounted on the inertia wheel spindle. The forward gear maximum speed ratio of the utility model is 9.512 and the reverse gear one 9.107. All the gearboxes are the synchrotron gears, except the first forward gear. The first forward gear and the reverse gear use to change the gear with the meshing sleeve.
Description
Technical field
The utility model relates to a kind of medium and heavy automobile speed changer, especially relates to the improvement to its structure, and the helical gear transmission is all adopted in the transmission of four 12 gear secondarys, realizes large speed ratio and the seven last astern power outputs on little speed ratio rank.
Background technique
In the prior art, one grade of gear of medium and heavy automotive transmission is essentially the spur gear engagement, and meshing performance exists not enough; And medium and heavy car is along with the fast development of engine technology, to speed changer proposed that meshing performance is good, gear is many, large speed ratio and the requirement on little speed ratio rank.Common five speed transmission gear shift difficulty, oil consumption is big etc., has not satisfied the growth requirement of in-between car.
Summary of the invention
The purpose of this utility model is exactly in order to overcome the deficiency of above-mentioned existence, and a kind of compact structure is provided, gear is many, ratio coverage is big, meshing performance is good, low price, can satisfy the automotive transmission that is complementary with 180～230 horsepower engines.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of transmission for medium size car, comprise housing, wherein first full roller bearing by outer astragal stop ring is arranged on the housing, an end of second is arranged on by full type roller bearing on first the endoporus, the other end is bearing on the housing by the full roller bearing of outer astragal stop ring, each shifting gear is enclosed within on second by the needle bearing sky, and each grade synchronizer is fixed on second by the spline on the toothholder; Jack shaft is bearing on the housing by roller bearing, and grade gear of each on the jack shaft is gone up the corresponding one by one engagement of each grade gear with second; Idler shaft directly is bearing on the housing, and idle pulley is arranged on the idler shaft; Take this to constitute the transmission of four ten bidentate secondarys and can realize the structure of seven last gear combinations of falling, wherein each gear of speed changer all is the helical gear engagement driving.
As the further improvement of technological scheme, one, two on the described jack shaft, three-speed gear and jack shaft are made of one, and all the other each grade gears are installed on the jack shaft by hot jacket; Jack shaft axially adopts floating structure; Idle pulley is enclosed within on the idler shaft by the needle bearing sky, and both sides have holds the mill pad.
The utility model topology layout is reasonable, can realize that forward gears gear number is 7, and reverse gear gear number is 1, forward gears slowest ratio 9.512, reverse gear ratio 9.107; The speed changer forward gears is a synchronizer shift except that one grade entirely, one grade and reverse gear employing collar shift.Be reliable to guarantee that tooth, axial workpiece intensity and two, third gear on the jack shaft select the needs of double-cone synchronizer for use on the utility model structure, on the jack shaft one, two, three-speed gear with spool be designed to one; Simultaneously, the whole lengthening of idle pulley is gone up in the reverse-gear position for two and is moved on to the two-speed gear limit, satisfies structure function demand on the jack shaft.All the other gear hot jackets are on axle on the jack shaft, are meshed with gear, idle pulley on one, two respectively, under synchronized shifting or the effect of collar shift mechanism, constitute the seven last transmission systems of falling of speed changer.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the present utility model.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: referring to Fig. 1, first 1 of the present utility model is fixed on the housing 3 by full roller cylindrical bearing 2, and the shelves ring on first 1 makes its axially locating with the stop ring on the bearing outer ring.Second 9 one end is bearing in by full type roller bearing in one 1 the endoporus, and the other end is bearing on the housing 3 by the full roller bearing 13 of outer astragal stop ring, and each shifting gear is enclosed within on second 9 by the needle bearing sky; Between two third gear, four or five grades, six or seven grades synchronizer shift mechanism is housed respectively, collar shift mechanism is housed between a reverse gear, each gearshift mechanism is fixed on second 9 by the spline on the toothholder.Jack shaft 7 two ends are bearing on the housing 3 by roller bearing, with second 9 on the corresponding one by one engagement of each grade gear, the front end axial float.Idler shaft 5 directly is bearing on the housing 3, and idle pulley 6 is enclosed within on the idler shaft 5 by the needle bearing sky, with 7 one grades of gear engagement of jack shaft in, be meshed with reverse-gear on second 9.
Under the choosing of top cover assembly 12, shift lever effect, shift fork system in the last cap assembly 11 begins to move forward and backward, driving synchronizer shift mechanism between two third gear or four or five grades or six or seven grades or the tooth cover in the collar shift mechanism between a reverse gear moves forward and backward, boring upper spline synchronously with a certain shelves combines, the free gear that makes one or two go up a certain gear is combined into one with two, realizes that the power of this gear is exported.When reverse gear tooth cover reach engages with the reverse-gear upper spline, power through first 1 to reduction gear 4, again via jack shaft 7, idle pulley 6, reverse-gear 10, second spool 9, after bead 8 is exported to transmission shaft.
At last, should be pointed out that above embodiment only is the more representational example of the utility model.Obviously, the utility model is not limited to the foregoing description, and many distortion can also be arranged.Every foundation technical spirit of the present utility model all should be thought to belong to protection domain of the present utility model to any simple modification, equivalent variations and modification that above embodiment did.
Claims (3)
1. medium and heavy automobile speed changer, comprise housing, it is characterized in that first (1) is arranged on the housing (3) by the full roller bearing (2) of outer astragal stop ring, one end of second (9) is arranged on the endoporus of first (1) by full type roller bearing, the other end is bearing on the housing (3) by the full roller bearing (13) of outer astragal stop ring, each shifting gear is enclosed within on second (9) by the needle bearing sky, and each grade synchronizer is fixed on second (9) by the spline on the toothholder; Jack shaft (7) is bearing on the housing (3) by roller bearing, and each grade gear on the jack shaft (7) is gone up the corresponding one by one engagement of each grade gear with second (9); Idler shaft (5) directly is bearing on the housing (3), and idle pulley (6) is arranged on the idler shaft (5); Take this to constitute the transmission of four ten bidentate secondarys and can realize the structure of seven last gear combinations of falling.
2. medium and heavy automobile speed changer according to claim 1 is characterized in that one, two on the jack shaft (7), three-speed gear and jack shaft (7) are made of one, and all the other each grade gears are installed on the jack shaft (7) by hot jacket; Idle pulley (6) is enclosed within on the idler shaft (5) by the needle bearing sky, and both sides have holds the mill pad.
3. medium and heavy automobile speed changer according to claim 1 and 2 is characterized in that described jack shaft (7) axially adopts floating structure; Each gear of speed changer all is the helical gear engagement driving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620100665 CN2878801Y (en) | 2006-01-24 | 2006-01-24 | Speed-variator dedicated for medium heavy-duty car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620100665 CN2878801Y (en) | 2006-01-24 | 2006-01-24 | Speed-variator dedicated for medium heavy-duty car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2878801Y true CN2878801Y (en) | 2007-03-14 |
Family
ID=37861216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620100665 Expired - Fee Related CN2878801Y (en) | 2006-01-24 | 2006-01-24 | Speed-variator dedicated for medium heavy-duty car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2878801Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042387A (en) * | 2010-12-19 | 2011-05-04 | 陕西法士特齿轮有限责任公司 | Countershaft support device of twin countershaft helical gear transmission |
| CN103256343A (en) * | 2011-08-19 | 2013-08-21 | 李建文 | Gear change transmission having axially adjusting countershafts |
-
2006
- 2006-01-24 CN CN 200620100665 patent/CN2878801Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042387A (en) * | 2010-12-19 | 2011-05-04 | 陕西法士特齿轮有限责任公司 | Countershaft support device of twin countershaft helical gear transmission |
| CN103256343A (en) * | 2011-08-19 | 2013-08-21 | 李建文 | Gear change transmission having axially adjusting countershafts |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070314 Termination date: 20120124 |