CN202266652U - 16-gear double-intermediate-shaft speed changing box - Google Patents
16-gear double-intermediate-shaft speed changing box Download PDFInfo
- Publication number
- CN202266652U CN202266652U CN2011203916670U CN201120391667U CN202266652U CN 202266652 U CN202266652 U CN 202266652U CN 2011203916670 U CN2011203916670 U CN 2011203916670U CN 201120391667 U CN201120391667 U CN 201120391667U CN 202266652 U CN202266652 U CN 202266652U
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- gear
- main
- speed changing
- shaft
- box
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Abstract
The utility model provides a 16-gear double-intermediate-shaft speed changing box, which can substantially reduce the noise of a speed changing box assembly and improve the bearing capacity of the speed changing box. The 16-gear double-intermediate-shaft speed changing box comprises a speed changing box shell, wherein the speed changing box shell has an enclosed structure which is formed by integrally connecting a front shell, a middle shell and a rear shell through a bolt and nut pair; an input shaft assembly is arranged in the front shell; the middle shell is a main speed changing box body and is provided with a main-box main shaft and two main-box middle shafts; the rear shell is a secondary speed changing box body; a main speed changing box consists of a secondary speed changing system and a main speed changing system; two gears of the secondary speed changing system are shifted through an insertion gear synchronizer; the main speed changing system is provided with four gears which are shifted by an engaging sleeve; a secondary speed changing box has two gears to form a 2*4*2 gear structure, namely a 16-gear structure; an engaging gear between the main-box main shaft and the two main-box middle shafts is a bevel gear; a main shaft forward gear is rotated rightwards; a main shaft reverse gear is rotated leftwards; and an engaging gear of the secondary speed changing box is a straight gear. Due to the adoption of full helical teeth of double middle shafts of the main speed changing box, the bearing capacity and the engaging stability of the speed changing box are improved, and the noise of the speed changing box assembly is substantially reduced; and an input insertion structure has a small gear speed ratio order difference and high fuel economy.
Description
Technical field
The utility model provides a kind of 16 retainings two jack shaft gearboxes, belongs to heavy-duty car drive technology field.
Background technique
In the common heavy type lorry transmission-gear box structure, it is big that two jack shaft structures have a transmitting torque, the characteristics of long service life, but two jack shaft structure needs two countershaft-gears " to tooth " to guarantee the conformity of two countershaft assemblys.Helical teeth seldom adopts in two jack shaft gearboxes because the existence of helix angle is high to the relative straight-tooth of tooth difficulty, and existing is the straight-tooth form basically, and the transmission assembly noise is bigger.Therefore be under the situation of two jack shaft structures at main tank, with the helical teeth introducing, reaching the bearing capacity that not only reduces the transmission assembly noise but also improve transmission assembly is a problem that presses for solution.
Summary of the invention
The utility model provides a kind of 16 retainings two jack shaft gearboxes, can reduce the transmission assembly noise significantly, and improve the gearbox bearing capacity.
To achieve these goals, the utility model is realized through following technological scheme:
The two jack shaft gearboxes of a kind of 16 retainings comprise gear box casing, and gear box casing is an enclosed construction that is connected as one through the bolt and nut pair by fore shell, mesochite and back cover, is provided with the input shaft assembly in the fore shell; Mesochite is the main-gear box casing; Have main tank main shaft and two main tank jack shafts, back cover is the auxiliary transmission casing, and main-gear box is made up of secondary speed variator system and main transformer speed system; Two gears of secondary speed variator system adopt to insert and divide the gearshift of retaining synchronizer, main transformer speed system to have 4 gears to adopt the gearshift of engagement cover; Auxiliary transmission has two gears, and forming 2 * 4 * 2 is 16 gear structures; Engaging gear between main tank main shaft and two the main tank jack shafts is a helical gear, and main shaft forward gear gear is dextrorotation, and the main shaft reverse gear is left-handed, and the engaging gear of auxiliary transmission is a spur gear.
Among the utility model embodiment; Secondary speed variator system comprises an input shaft; This input shaft is provided with underneath drive gear, high rotating speed gear and the plug in retaining synchronizer that divides; Input shaft one end is installed on the gearbox fore shell, and the other end inserts main tank main shaft left end, and input shaft and main tank main shaft binding site are equipped with thrust-bearing.
Among the utility model embodiment, be interval with forward thrust bearing and back thrust-bearing between high rotating speed gear and the input shaft.
Among the utility model embodiment, the input shaft end is equipped with bearing race, thrust-bearing, thrust bearing pad, trip ring and trip ring locking plate successively, and bearing race links to each other with the main tank main shaft through connecting jump ring.
Among the utility model embodiment, be provided with lining in the bearing race, and lining and input shaft are Spielpassung.
Among the utility model embodiment, auxiliary transmission is the planetary gear train structure, and the planet carrier front end is supported on the mesochite through needle bearing, and the planet carrier rear portion is supported on the back cover through deep groove ball bearing.
The beneficial effect of the utility model:
Adopt the two full helical teeth of jack shaft of main-gear box, improved gearbox bearing capacity and engagement stationarity, reduced the transmission assembly noise significantly; It is little that separation structure gear speed ratio jump is inserted in input, and fuel economy is high.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is main tank front-end of spindle location schematic representation;
Fig. 3 is a main shaft left end schematic cross-section;
Fig. 4 is a planet carrier supporting structure schematic representation.
Embodiment
Understand for the ease of those skilled in the art, the utility model is done further explain below in conjunction with accompanying drawing and specific embodiment.
With reference to accompanying drawing 1, the two jack shaft gearboxes of a kind of 16 retainings comprise gear box casing, and gear box casing is an enclosed construction that is connected as one through the bolt and nut pair by fore shell 21, mesochite 22 and back cover 23, is provided with input shaft assembly 24 in the fore shell 21; Mesochite 22 is the main-gear box casing; Inside has main tank main shaft 11 and two main tank jack shafts 25; Back cover 23 is the auxiliary transmission casing; Main-gear box is made up of secondary speed variator system and main transformer speed system, and two gears of secondary speed variator system adopt to insert and divide the retaining synchronizer 4 gearshifts, and the main transformer speed system has 4 gears to adopt 28 gearshifts of engagement cover; Auxiliary transmission has two gears, and forming 2 * 4 * 2 is 16 gear structures; Engaging gear between main tank main shaft 11 and two the main tank jack shafts 25 is a helical gear; And main shaft forward gear gear 29 is dextrorotation, and main shaft reverse gear 30 is left-handed, adopts planetary gear train in the auxiliary transmission; And engaging gear is a spur gear, can improve odd-side bearing capacity and life-span.
With reference to accompanying drawing 2; Secondary speed variator system comprises an input shaft 12, and this input shaft 12 is provided with underneath drive gear 3 and high rotating speed gear 6, and slotting branch retaining synchronizer 4 reaches to insert through toothholder jump ring 19 and divides toothholder 18 to be installed on the input shaft 12; Input shaft 12 1 ends are installed on the gearbox fore shell 21; The other end inserts main tank main shaft 11 left ends, and input shaft 12 is equipped with thrust-bearing 16 with main tank main shaft 11 binding sites, to offset the axial force of input shaft 12 and main tank main shaft 11; High rotating speed gear 6 has two kinds of functions of passive transmission and active transmission; Initiatively during transmission axial force to the right, when passive axial force left because high driving gear 6 is passive when retaining; Produce speed discrepancy between itself and the input shaft 12; Axial force is pointed to input shaft 12, is balancing axial thrust, is interval with forward thrust bearing 5 and back thrust-bearing 7 between high rotating speed gear 6 and the input shaft 12.This kind structure is provided with main consideration main shaft forward gear gear 29 and is dextrorotation, and main shaft reverse gear 30 is left-handed for anti-convention designs, and the axially locating of main tank main shaft 11 has been moved to leading portion.
With reference to accompanying drawing 2.3; Input shaft 12 and main tank main shaft 11 concrete installations as follows: main tank main shaft 11 left ends are provided with endoporus; This endoporus is established jump ring groove 31 and the convenient breach 27 that is connected jump ring 17 of installing; Input shaft 12 ends are equipped with thrust-bearing 16, thrust bearing pad 15, trip ring 14 successively and pass through 13 lockings of trip ring locking plate; Insert main tank main shaft 11 left end endoporus and bearing race 8 then and be connected jump ring 17 and input shaft 12 be connected fixing with main tank main shaft 11, bearing race 8 is the locating face of main tank main shaft 11 with main tank main shaft 11 surface of contact.In order to realize floating of main tank main shaft 11, be provided with powder metallurgy lining 10 in the bearing race 8, and lining 10 leaves the gap with input shaft 12.
Secondary speed variator system working procedure is following: main tank main shaft 11 axial forces left; Main-gear box is when retaining; Main shaft 11 axial force transmission lean on back thrust-bearing 7, high driving gear 6, forward thrust bearing 5 to carry out the transition to input shaft 12 to bearing race 8 then, lean on input shaft 12 balances; When main tank was shifted gears to low gear, main shaft 11 received the power of axially shifting gears to the right, was delivered to bearing race 8 through connecting jump ring 17, was delivered to thrust-bearing 16, thrust bearing pad 15, trip ring 14 then, was delivered to input shaft 12 at last, leaned on input shaft 12 balances.
With reference to being odd-side planetary mechanism assembly 26 in accompanying drawing 4 auxiliary transmissions; Planet carrier front end 2 is supported on the mesochite 22 through needle bearing 1; Planet carrier rear portion 9 is supported on the back cover 23 through deep groove ball bearing 20; Planet carrier front and back dual-support structure has reduced car load factor (uneven like transmission shaft) and to the influence of gearbox inside proper functioning, has improved auxiliary transmission and got working life.
The utility model adopts the two full helical teeth of jack shaft of main-gear box, has improved gearbox bearing capacity and engagement stationarity, has reduced the transmission assembly noise significantly; It is little that separation structure gear speed ratio jump is inserted in input, and fuel economy is high; Auxiliary transmission case planetary gear train combining form also adopts spur gear, has improved auxiliary transmission and has got working life, and dual-support structure has reduced the influence of car load factor (uneven like transmission shaft) to gearbox inside proper functioning before and after the planet carrier.
Above embodiment only be used to explain the utility model technological scheme but not to its restriction; Although the utility model is specified through embodiment; Under the field personnel should make amendment or the part technical characteristics is equal to replacement with reference to the concrete mode of the utility model; But under the spirit that does not break away from the utility model technological scheme, above-mentioned change or be equal to replacement and should belong in the technological scheme scope that the utility model asks for protection.
Claims (6)
1. the two jack shaft gearboxes of retaining comprise gear box casing, and gear box casing is an enclosed construction that is connected as one through the bolt and nut pair by fore shell, mesochite and back cover, is provided with the input shaft assembly in the fore shell; Mesochite is the main-gear box casing; Have main tank main shaft and two main tank jack shafts; Back cover is the auxiliary transmission casing; It is characterized in that: main-gear box is made up of secondary speed variator system and main transformer speed system, and two gears of secondary speed variator system adopt to insert and divide the gearshift of retaining synchronizer, main transformer speed system to have 4 gears to adopt the gearshift of engagement cover; Auxiliary transmission has two gears, and forming 2 * 4 * 2 is 16 gear structures; Engaging gear between main tank main shaft and two the main tank jack shafts is a helical gear, and main shaft forward gear gear is dextrorotation, and the main shaft reverse gear is left-handed, and the engaging gear of auxiliary transmission is a spur gear.
2. according to the two jack shaft gearboxes of said 16 retainings of claim 1; It is characterized in that: secondary speed variator system comprises an input shaft; This input shaft is provided with underneath drive gear, high rotating speed gear and the plug in retaining synchronizer that divides; Input shaft one end is installed on the gearbox fore shell, and the other end inserts main tank main shaft left end, and input shaft and main tank main shaft binding site are equipped with thrust-bearing.
3. according to the two jack shaft gearboxes of said 16 retainings of claim 2, it is characterized in that: be interval with forward thrust bearing and back thrust-bearing between high rotating speed gear and the input shaft.
4. according to claim 2 or the two jack shaft gearboxes of 3 said 16 retainings; It is characterized in that: the input shaft end is equipped with bearing race, thrust-bearing, thrust bearing pad, trip ring and trip ring locking plate successively, and bearing race links to each other with the main tank main shaft through connecting jump ring.
5. according to the two jack shaft gearboxes of said 16 retainings of claim 4, it is characterized in that: be provided with lining in the bearing race, and lining and input shaft are Spielpassung.
6. according to claim 2 or the two jack shaft gearboxes of 3 said 16 retainings, it is characterized in that: auxiliary transmission is the planetary gear train structure, and the planet carrier front end is supported on the mesochite through needle bearing, and the planet carrier rear portion is supported on the back cover through deep groove ball bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203916670U CN202266652U (en) | 2011-10-15 | 2011-10-15 | 16-gear double-intermediate-shaft speed changing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203916670U CN202266652U (en) | 2011-10-15 | 2011-10-15 | 16-gear double-intermediate-shaft speed changing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202266652U true CN202266652U (en) | 2012-06-06 |
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ID=46157449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203916670U Expired - Lifetime CN202266652U (en) | 2011-10-15 | 2011-10-15 | 16-gear double-intermediate-shaft speed changing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202266652U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330803A (en) * | 2011-10-15 | 2012-01-25 | 中国重汽集团济南动力有限公司 | 16-shift double-countershaft speed changing box |
| CN102734421A (en) * | 2012-06-27 | 2012-10-17 | 中国重汽集团济南动力有限公司 | Novel 16-gear speed changing box with oblique gears, double middle shafts and lock ring type synchronizers |
| CN102788138A (en) * | 2012-08-20 | 2012-11-21 | 中国重汽集团济南动力有限公司 | Twelve-gear speed changer of double-intermediate-shaft full-synchronizer |
-
2011
- 2011-10-15 CN CN2011203916670U patent/CN202266652U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330803A (en) * | 2011-10-15 | 2012-01-25 | 中国重汽集团济南动力有限公司 | 16-shift double-countershaft speed changing box |
| CN102734421A (en) * | 2012-06-27 | 2012-10-17 | 中国重汽集团济南动力有限公司 | Novel 16-gear speed changing box with oblique gears, double middle shafts and lock ring type synchronizers |
| CN102734421B (en) * | 2012-06-27 | 2015-05-27 | 中国重汽集团济南动力有限公司 | Novel 16-gear speed changing box with oblique gears, double middle shafts and lock ring type synchronizers |
| CN102788138A (en) * | 2012-08-20 | 2012-11-21 | 中国重汽集团济南动力有限公司 | Twelve-gear speed changer of double-intermediate-shaft full-synchronizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120606 |