CN201338532Y - Auxiliary gearbox assembly for vehicle - Google Patents
Auxiliary gearbox assembly for vehicle Download PDFInfo
- Publication number
- CN201338532Y CN201338532Y CNU2009201260265U CN200920126026U CN201338532Y CN 201338532 Y CN201338532 Y CN 201338532Y CN U2009201260265 U CNU2009201260265 U CN U2009201260265U CN 200920126026 U CN200920126026 U CN 200920126026U CN 201338532 Y CN201338532 Y CN 201338532Y
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- Prior art keywords
- shaft
- shift
- gear
- gearshift
- output shaft
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Abstract
The utility model discloses an auxiliary gearbox assembly for a vehicle, which comprises an upper gearbox body, a lower gearbox body, an input shaft, a middle shaft and an output shaft, and is characterized in that after being assembled, the upper gearbox body and the lower gearbox body form bearing-installing holes on the gearbox wall on the left side and the right side; the power input end of the input shaft is inserted into a first needle bearing; the middle shaft is supported under the lower gearbox body by a bearing and is sleeved with a primary driven gear and a second drive gear; wherein the primary driven gear is meshed with the gear of the input shaft, and the second drive gear is meshed with a second driven gear. The utility model can realize the gearshift without the rigid connection with a rear axle, thus reducing the total mass of the rear axle, reducing the complete vehicle unsprung mass, prolonging the service life of the complete vehicle, reducing the vibration and improving the comfort for driving and sitting.
Description
Technical field
The utility model belongs to the change-speed box technical field, specifically, relates to a kind of automobile-used demultiplicator assembly.
Background technology
For vehicle can run a good foot when the zero load, and enough power is arranged when heavy duty, make vehicle have more fuel economy, the now three-wheel vehicle of public use or four-wheeled, except that the gear of driving engine itself, between driving engine and back axle, increased a speed-changing mechanism again.And, do not satisfy market demands and also need be provided with gear reversing device in this mechanism because motor-tricycle starts and general gasoline engines does not all have reverse gear.Have two kinds of structures to solve this problem in the market:
First kind of structure is that the input end at back axle increases a dual-ratio reduction+reverse gear mechanism, and this mechanism connects into integral body, i.e. a dual-performance rear axle with bolt and back axle.Mainly there is following problem in this structure:
1. cause the total mass of back axle to increase, the car load unsprung weight is overweight, has a strong impact on car load service life, and because this kind structure must make the back axle input end stretch oversizely, radially mass distribution is seriously uneven to cause back axle, make back axle have one all the time, particularly in the vehicle operating process, constantly produce impulsive force to the front lower place rotating moment, just increase vibration greatly, car load is driven and is on duty mutually with the comfort of taking, and the car load riding stability is poor, and reduce service life greatly.
2. adopt above-mentioned directly and the back axle ways of connecting will inevitably increase a junction at demultiplicator, and also need to increase the joint portion that is complementary with it at the corresponding connection location of back axle, and their design size space and connection mode just must be subjected to the restriction of back axle size, it is quite difficult wanting to strengthen mechanism's volume or increasing reduction ratio, just can not fully satisfy user's operating needs.Also increase the difficulty of die sinking and manufacturing simultaneously, increased cost.
3. must connect together with back axle owing to this structure.The commonality of back axle is reduced, and the extendability of back axle is relatively poor, can not at will change back axle, is unfavorable for that series of products organize production in batches.
4. because the function that back axle is concentrated increases, and reliability is relatively poor, maintenance cost increases greatly.
Second kind of structure is to increase an independently demultiplicator of four D Drive+one reverse gears between driving engine and back axle.Be connected with back axle with driving engine respectively by transmission shaft before and after this demultiplicator.Mainly there is following shortcoming in this kind demultiplicator:
1, because driving engine itself has 5 shelves, add 5 gears of demultiplicator, will 25 shelves of combination results.In these 25 shelves, wherein have gear over half be repetition or transmitting ratio differ very little, it is too many to cause gear to repeat, the vehicle driver will be misled when gear shift.Can not find the gear that oneself needs very soon, even wrong operation occur.
2, because gear is many, this demultiplicator is bigger in axial size, the size of corresponding transmission shaft just need shorten, the installation angle of transmission shaft on car load increased, in the vehicle operating process, impact increase, vibration also strengthens, transmission shaft universal-joint cumulative reliability reduces, and the comfort that car load is driven also descends.
3, waste is big, and it is high that manufacturing cost becomes.
The utility model content
For solving above technical matters, the purpose of this utility model is to provide a kind of energy to satisfy the automobile-used demultiplicator assembly that has the reverse gear function and demultiplicator is connected with back axle by transmission shaft.
The technical solution of the utility model is as follows:
A kind of automobile-used demultiplicator assembly, comprise upper box, lower box, input shaft, tween drive shaft and output shaft, by on the speed change tank wall of the left and right sides, forming bearing mounting hole after described upper box and the lower box mould assembling, in this bearing mounting hole bearing is housed, described input shaft and output shaft pass respectively at the bearing of the left and right sides and casing, and the axial line of described input shaft and output shaft is on same straight line; Wherein said input shaft is a gear wheel shaft, this gear wheel shaft is provided with endoporus near output shaft one end axle center, first needle bearing is housed in this endoporus, the power intake of described output shaft is inserted in first needle bearing, be set with secondary driven gear and reverse gear transmission gear on described output shaft from left to right successively, wherein the secondary driven gear is sleeved on the output shaft through second needle bearing; On the output shaft between gear on the input shaft and the described secondary driven gear, be set with synchro, the high and low shift shift shaft and the reverse gear gearshift axle that are parallel to described output shaft are installed on the upper box of this synchro top, this high and low shift shift shaft is parallel with reverse gear gearshift axle, wherein high and low shift shift shaft the inner is equipped with first shift fork, a reverse gear gearshift axle the inner is equipped with second shift fork, is positioned on the upper box of described high and low shift shift shaft and reverse gear gearshift axle outer end gearshift is installed; Described first shift fork is inserted on the ring gear of described synchro; Described tween drive shaft on casing, is set with one-level driven gear, secondary driving gear and reverse drive wheel by bearings on this tween drive shaft, described one-level driven gear is meshed with gear on the input shaft, and the secondary driving gear is meshed with the secondary driven gear; Be positioned on the lower box of described tween drive shaft below and also be provided with idler shaft, be set with idle pulley on this idler shaft, described second shift fork is inserted in the position-limited trough of idle pulley.
Adopt said structure when reaching double reduction, this demultiplicator can directly be connected with the input shaft of back axle by transmission shaft.The specific embodiment is by input shaft and output shaft are designed on same axial line, and be connected again with transmission shaft earlier at the clutch end of this output shaft and be connected with back axle by transmission shaft, the problem of having avoided mentioning in the background technology that directly is connected existence with back axle, need not design independently connecting portion in this structure, and the structure that is complementary in back axle design.Adopt existing back axle just can reach its purpose in the time of can also adapting at need increasing mechanism's volume or increase reduction ratio situation.Alleviated the total mass of back axle simultaneously, the car load unsprung weight descends, and has improved car load service life, has reduced vibration, has improved the comfort that car load is driven and taken.
In addition, effectively utilized the space of casing in this structure, increased reverse gear mechanism, be implemented in and greatly reduce manufacturing cost when satisfying the reverse gear demand, also improved the gearshift reliability by rational layout.
Described gearshift mainly is made up of housing, gearshift rocking arm, pusher dog and shift selecting rocking arm, described housing is fixed on the upper box, described gearshift rocking arm is installed on the housing, and the end with swing arm is reached outside the housing, on described gearshift rocking arm, the claw of this pusher dog is " ㄇ " shape to described pusher dog by spline package; Described shift selecting rocking arm is installed on the housing, and the adjustment end of this shift selecting rocking arm is inserted between the described pusher dog claw, by the control shift selecting rocking arm claw of described pusher dog is entered in a high and low shift shift shaft or the reverse gear gearshift groove that upward is provided with respectively.
The clutch end of described output shaft is equipped with and is used for the connecting device that is connected with transmission shaft.
Described connecting device is flange or universal-joint.
Utilize flange or universal-joint and flange connection on the transmission shaft can reach being connected between output shaft and the transmission shaft.
Beneficial effect: the utility model need not can realize with the back axle direct connection speed change purpose of auxiliary gearbox, alleviated the total mass of back axle, the car load unsprung weight descends, and has improved car load service life, reduce vibration, improved the comfort that car load is driven and taken.And the back axle that can mate different model makes the back axle universalization, can reach the purpose of standardized production.Reduce production costs.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the B-B cutaway view of Fig. 1.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Embodiment, as shown in Figure 1, 2: described gearshift 9 mainly is made up of housing 25, gearshift rocking arm 26, pusher dog 27 and shift selecting rocking arm 28, described housing 25 is fixed on the upper box 1, described gearshift rocking arm 26 is installed on the housing 25, and the end with swing arm is reached outside the housing 25, on described gearshift rocking arm 26, the claw of this pusher dog 27 is " ㄇ " shape to described pusher dog 27 by spline package; Described shift selecting rocking arm 28 is installed on the housing, the adjustment end of this shift selecting rocking arm 28 is inserted between described pusher dog 27 claws, by control shift selecting rocking arm 28 claw of described pusher dog 27 is entered in the groove that is provided with on high and low shift shift shaft 10 or the reverse gear gearshift axle 20 respectively.The clutch end of described output shaft 7 is equipped with and is used for the connecting device that is connected with transmission shaft.Described connecting device is a flange 8, and this connecting device also can be selected universal-joint for use.
Described as shown in Figure 3 gearshift 9 mainly is made up of housing 25, gearshift rocking arm 26, pusher dog 27 and shift selecting rocking arm 28, described housing 25 is fixed on the upper box 1, described gearshift rocking arm 26 is installed on the housing 25, and the end with swing arm is reached outside the housing 25, on described gearshift rocking arm 26, the claw of this pusher dog 27 is " ㄇ " shape to described pusher dog 27 by spline package; Described shift selecting rocking arm 28 is installed on the housing, the adjustment end of this shift selecting rocking arm 28 is inserted between described pusher dog 27 claws, by control shift selecting rocking arm 28 claw of described pusher dog 27 is entered in the groove that is provided with on high and low shift shift shaft 10 or the reverse gear gearshift axle 20 respectively.
The principle of work of this demultiplicator:
As shown in Figure 1: power connects driving engine from input shaft 2 power intakes, when needing gearshift, shift selecting rocking arm 28 in the operation gearshift 9, by these shift selecting rocking arm 28 control pusher dogs 27, the claw of this pusher dog 27 is selectively entered in the groove that is provided with on high and low shift shift shaft 10 or the reverse gear gearshift axle 20, after selecting to enter a certain groove, control the gearshift axle that 26 promotions of gearshift rocking arm are chosen:
When selecting to promote high and low shift shift shaft 10,
This moment if the ring gear of synchro 12 under the drive of first shift fork 13 to move to left with input shaft 2 on the external toothing engagement, make the power of input shaft 2 directly pass to output shaft 7, at this moment, connect power just through 8 outputs of input shaft 2 → synchro 12 → output shaft 7 → output flange.Output flange 8 can arrive vehicle rear axle with transmission of power by connecing transmission shaft, this moment, demultiplicator was in direct gear (high tap position), vehicle can obtain the higher speed of a motor vehicle, and one-level driven gear 4, secondary driving gear 6, secondary driven gear 11 all are in idling conditions.
This moment if the ring gear of synchro 12 move right under the drive of first shift fork 13 with secondary driven gear 11 on the external toothing engagement, make and be in non-direct transmission between output shaft 7 and the input shaft 2, one end of output shaft 7 dallies by forming in the needle bearing in the endoporus of input shaft 2, this moment, the outputting power of input shaft 2 was exported by one-level driven gear 4 → tween drive shaft 5 → secondary driving gear 6 → secondary driven gear 11 → baulk ring 12 → output shaft 7 → output flange 8, output flange 8 can arrive vehicle rear axle with transmission of power by connecing transmission shaft, this moment, demultiplicator was in low-grade location, and vehicle can obtain bigger moment of torsion.
When select promoting reverse gear gearshift axle 20,
This moment if reverse gear second shift fork 21 under the drive of reverse gear shift shaft 20 to moving to left, idle pulley 23 just meshes with reverse drive gear 24, reverse gear transmission gear 19 respectively to moving to left under the drive of second shift fork 21, and power is just through 8 outputs of input shaft 2 → one-level driven gear 4 → tween drive shaft 5 → reverse drive gear 24 → idle pulley 8 → reverse gear transmission gear 19 → output shaft 7 → output flange.Output flange 8 can arrive vehicle rear axle with transmission of power by connecing transmission shaft, and this moment, demultiplicator was in the reverse gear position, and vehicle can be realized reversing.The ring gear of synchro 12 is in neutral position, and secondary driving gear 6, secondary driven gear 11 are in idling conditions.
Wherein, reverse gear shift shaft 20 is realized interlock function with high and low shift shift shaft 10 by the interlocking steel ball 25 as Fig. 3.When vehicle need advance, when high and low shift shift shaft 10 was mobile to the left or to the right, interlocking steel ball 25 entered in the groove of reverse gear shift shaft 20, and reverse gear shift shaft 20 is blocked, and reverse gear shift shaft 20 is in neutral position at this moment, and the reverse gear shift shaft can't move for 20 this moments.When the needs reverse gear, high and low shift shift shaft 10 must be toggled it to Neutral Position, this moment, interlocking steel ball 25 can side travel, be moved to the left when stirring reverse gear shift shaft 20, interlocking steel ball 25 enters in the groove of high and low shift shift shaft 10, high and low shift shift shaft 10 is blocked, and high and low shift shift shaft 10 is in Neutral Position at this moment, and the high and low shift shift shaft can't move for 10 this moments.Realize interlocking.Can be when guaranteeing D Drive, reverse gear because of disorderly shelves phenomenon does not appear in misoperation, gear shift is reliable and stable.
Claims (5)
1. automobile-used demultiplicator assembly, comprise upper box (1), lower box (3), input shaft (2), tween drive shaft (5) and output shaft (7), it is characterized in that: by on the speed change tank wall of the left and right sides, forming bearing mounting hole after described upper box (1) and lower box (3) mould assembling, bearing (14) is housed in this bearing mounting hole, described input shaft (2) and output shaft (7) pass bearing (14) and the casing in the left and right sides respectively, and the axial line of described input shaft (2) and output shaft (7) is on same straight line; Wherein said input shaft (2) is a gear wheel shaft, this gear wheel shaft is provided with endoporus near output shaft (7) one end axle center, first needle bearing (15) is housed in this endoporus, the power intake of described output shaft (7) is inserted in first needle bearing (15), be set with secondary driven gear (11) and reverse gear transmission gear (19) on described output shaft (7) from left to right successively, wherein secondary driven gear (11) is sleeved on the output shaft (7) through second needle bearing (18); Be set with synchro (12) being positioned on gear on the input shaft (2) and the output shaft (7) between the described secondary driven gear (11), the high and low shift shift shaft (10) and the reverse gear gearshift axle (20) that are parallel to described output shaft (7) are installed on the upper box (1) of this synchro (12) top, this high and low shift shift shaft (10) is parallel with reverse gear gearshift axle (20), wherein high and low shift shift shaft (10) the inner is equipped with first shift fork (13), reverse gear gearshift axle (a 20) the inner is equipped with second shift fork (21), is positioned on the upper box (1) of described high and low shift shift shaft (10) and reverse gear gearshift (20) outer end gearshift (9) is installed; Described first shift fork (13) is inserted on the ring gear of described synchro (12); Described tween drive shaft (5) is supported on the casing by bearing (17), be set with one-level driven gear (4), secondary driving gear (6) and reverse drive wheel (24) on this tween drive shaft (5), described one-level driven gear (4) is meshed with gear on the input shaft (2), and secondary driving gear (6) is meshed with secondary driven gear (11); Be positioned on the lower box (3) of described tween drive shaft (5) below and also be provided with idler shaft (22), be set with idle pulley (23) on this idler shaft (22), described second shift fork (21) is inserted in the position-limited trough of idle pulley (23).
2. automobile-used demultiplicator assembly according to claim 1, it is characterized in that: described gearshift (9) mainly is made up of housing (25), gearshift rocking arm (26), pusher dog (27) and shift selecting rocking arm (28), described housing (25) is fixed on the upper box (1), described gearshift rocking arm (26) is installed on the housing (25), and the end with swing arm is reached outside the housing (25), on described gearshift rocking arm (26), the claw of this pusher dog (27) is " ㄇ " shape to described pusher dog (27) by spline package; Described shift selecting rocking arm (28) is installed on the housing, the adjustment end of this shift selecting rocking arm (28) is inserted between described pusher dog (27) claw, makes the claw of described pusher dog (27) enter into high and low shift shift shaft (10) or reverse gear gearshift axle (20) respectively by control shift selecting rocking arm (28) and goes up in the groove that is provided with.
3. automobile-used demultiplicator assembly according to claim 1 is characterized in that: the clutch end of described output shaft (7) is equipped with and is used for the connecting device that is connected with transmission shaft.
4. automobile-used demultiplicator assembly according to claim 3 is characterized in that: described connecting device is flange (8).
5. automobile-used demultiplicator assembly according to claim 3 is characterized in that: institute's connecting device is a universal-joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201260265U CN201338532Y (en) | 2009-01-06 | 2009-01-06 | Auxiliary gearbox assembly for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201260265U CN201338532Y (en) | 2009-01-06 | 2009-01-06 | Auxiliary gearbox assembly for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201338532Y true CN201338532Y (en) | 2009-11-04 |
Family
ID=41234071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201260265U Expired - Lifetime CN201338532Y (en) | 2009-01-06 | 2009-01-06 | Auxiliary gearbox assembly for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201338532Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363090A (en) * | 2012-09-14 | 2013-10-23 | 喻硕 | Continuous gear shifting speed changer |
| WO2014186914A1 (en) * | 2013-05-22 | 2014-11-27 | Yu Shuo | Continuous gear shifting transmission |
| CN114789654A (en) * | 2022-06-22 | 2022-07-26 | 徐州重型机械有限公司 | Electric drive transmission system and engineering vehicle |
-
2009
- 2009-01-06 CN CNU2009201260265U patent/CN201338532Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363090A (en) * | 2012-09-14 | 2013-10-23 | 喻硕 | Continuous gear shifting speed changer |
| CN103363090B (en) * | 2012-09-14 | 2015-10-21 | 喻硕 | Continuous manual transmission |
| WO2014186914A1 (en) * | 2013-05-22 | 2014-11-27 | Yu Shuo | Continuous gear shifting transmission |
| CN114789654A (en) * | 2022-06-22 | 2022-07-26 | 徐州重型机械有限公司 | Electric drive transmission system and engineering vehicle |
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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: 20091104 |