CN203594762U - Medium-sized automobile speed changer with primary and auxiliary boxes - Google Patents

Abstract

The utility model provides a medium-sized automobile speed changer with primary and auxiliary boxes. The speed changer is of an intermediate shaft type fixed shaft transmission structure. The speed changer has four forward gear positions and one reverse gear position. Full helical teeth meshing transmission is employed. The first, second, third and fourth gear positions employ a lock ring type synchronizer for gear shift, and the reverse gear employs an engagement sleeve for gear shift. An auxiliary speed changer is of a planet transmission structure and has a high gear position and a low gear position. A large-capacity synchronizer is used for gear shift. Transition between the high and the lower gear position ranges is achieved through automatically-controlled switching by an air valve. The combination of a primary speed changer and the auxiliary speed changer forms a speed changer configuration with eight forward gear positions and two reverse gear positions. The speed changer achieves a large carrying capacity, a number of gear positions, full synchronizer shift, a speed ratio distributed following a biased geometric progression, linked control of the primary and the auxiliary boxes, easy shift, environmental protection and energy saving. The speed changer is highly adaptive to various working and road conditions and thus can well satisfy the development requirements of domestic automobiles at present.

Description

With the medium-sized automobile transmission of major and minor case

Technical field

The utility model discloses a kind of medium-sized automobile transmission with major and minor case, belong to vehicle transmission part technical field.

Background technique

The problems such as domestic current many grades of automotive transmissions of medium-sized band odd-side, mostly are two intermediate shaft structures, and its main tank, without synchronizer, exists operation inconvenience, and gear shift difficulty, working strength are large, are difficult to meet the demand of current domestic compact car fast development.

Model utility content

In order to address the above problem, the utility model provides a kind of compact structure, gear is many, ratio coverage is large, coupling is reasonable, meshing performance is good, low price, odd-side planetary gear transmission mechanism, many grades of medium-sized automobile transmissions of the full synchronizer shift of major and minor case.

To achieve these goals, the technological scheme that the utility model adopts is:

A kind of medium-sized automobile transmission with major and minor case, comprise basic trnasmission housing, be connected to the rear case of the auxiliary transmission at housing rear, described basic trnasmission is that parallel-axis type drive mechanism, auxiliary transmission are planetary transmission structure, high and low shift region conversion compressed-air shifting.

The housing inner chamber of described basic trnasmission is provided with oil-collecting delivery chute structure, this oil-collecting delivery chute structure comprises on the axial inner side of tank wall that is positioned at housing, low after front height, tail end flows out to odd-side inner chamber the oil-collecting lubrication groove that oilhole is connected with the main tank inner chamber in the abutment wall of major and minor box cavity interval; Meanwhile, in the abutment wall of major and minor box cavity interval and higher than main tank inner chamber, on the position of odd-side inner chamber outflow oilhole, also opened odd-side inner chamber to main tank inner chamber backflow oilhole.

Described odd-side inner chamber is preferably two to main tank inner chamber backflow oilhole.

Due to the design of oil-collecting delivery chute structure, in the time that speed changer is worked, the utility model is exported lubricant oil by the oil-collecting delivery chute of particular design from speed changer main tank inner chamber to odd-side inner chamber, thereby raise rapidly odd-side inner chamber lubricating oil level, for the gear in planetary transmission structure, bearing, high and low shift synchromesh unit etc. provide lubricated.Odd-side inner chamber oil level, after certain altitude, to main tank inner chamber backflow oilhole to the oil return of main tank inner chamber, forms the lubricated loop that circulates by the odd-side inner chamber in the abutment wall of major and minor box cavity interval.

In the utility model, the first axle of basic trnasmission is bearing on housing by the roller bearing of outer astragal stop ring; Second axle one end is bearing in by full type roller bearing on the endoporus of the first axle, the other end is bearing on housing by the roller bearing of outer astragal stop ring, each shifting gear is by needle bearing empty set on the second axle, and each gearshift mechanism is fixed on the second axle by spline; Jack shaft is bearing on housing by roller bearing, and a speed, reverse driving gear and jack shaft are made of one, and all the other each grade of gears are arranged on jack shaft by hot jacket, with each grade of gear corresponding engagement one by one on the second axle; The idler shaft of basic trnasmission is positioned at the upper left side of jack shaft and is directly bearing on housing, and idle pulley is by needle bearing empty set on idler shaft, and both sides are with holding mill pad, and idle pulley engages the while and engages with reverse gear on two axles with the reverse driving gear on jack shaft; One, two, three, fourth gear adopts lock ring type synchronizer shift, one grade, reverse gear adopt collar shift; Realize the last function of basic trnasmission five in conjunction with upper cap assembly and top cover assembly.

Described rear case is directly connected with housing, and auxiliary transmission input gear (sun gear) is fixed on by spline on the second axle of basic trnasmission; Output shaft and planet carrier are made a rigid unitary, are bearing on rear case by deep groove ball bearing; The gear ring of planetary mechanism engages with planet wheel simultaneously, can be realized locking or freely be rotated by locking plate; High and low shift synchronizer is arranged on gear ring and is unified on the supporting base of rigid unitary, and the top of high and low shift synchromesh unit assembly is provided with the compressed air gearshift by gear shifting handle control.

On basic trnasmission jack shaft of the present utility model, a fast gear and jack shaft are designed to one; On jack shaft, all the other gear hot jackets, on axle, are meshed with gear, idle pulley on the first axle, the second axle respectively, under synchronizer shift or the effect of collar shift mechanism, form five last transmission systems of basic trnasmission; The planetary mechanism power of auxiliary transmission is inputted by sun gear, under the effect of gear shift air valve, drives the locking of the different components and parts of planetary mechanism by compressed air gearshift, realizes speed changer high and low shift region and automatically changes.Realize thus and before speed changer proper nine, (filter a last reverse gear) and one fall function.

Adopt after such scheme, the utility model is three grades of transmissions of four axle 11 gear one planetary mechanisms, nine last astern power outputs are realized, forming maximum input torque is 700N.m, speed ratio is by the configuration of biasing geometric ratio level, 8 front full synchronizer shifts, a last new structure for collar shift, there is the advantages such as bearing capacity is large, numbers of gear steps is many, geometric progression distributes speed ratio matching by setovering, major-minor case interlock manipulation, environmental protection and energy saving, to various operating modes, road conditions strong adaptability, can meet preferably the growth requirement of current domestic automobile.

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is idler shaft, the idle pulley mounting structure schematic diagram on housing in the utility model;

Fig. 3 is the structural representation of the housing of basic trnasmission in Fig. 1;

Fig. 4 is the right TV structure schematic diagram of Fig. 3.

Embodiment

As shown in Figure 1, 2, the medium-sized automobile transmission of the major and minor case of the utility model band, comprise basic trnasmission housing 3, be connected to the rear case 12 of the auxiliary transmission at housing 3 rears, basic trnasmission is that parallel-axis type drive mechanism, auxiliary transmission are planetary transmission structure, high and low shift region conversion compressed-air shifting, concrete structure is as follows:

The first axle 1 of basic trnasmission is bearing on housing 3 by the roller bearing 2 of outer astragal stop ring.Second axle 4 one end are bearing in by full type roller bearing on the endoporus of the first axle 1, the other end is bearing on housing 3 by the roller bearing 7 of outer astragal stop ring, each shifting gear is by needle bearing empty set on the second axle 4, and each synchronizer gear seat is fixed on the second axle 4 by spline.Jack shaft 23 one end are bearing on housing 3 by outer astragal stop ring roller bearing 22, the other end is bearing on housing 3 by the roller bearing 24 of axial float, one fast gear, reverse driving gear and jack shaft 23 are made of one, all the other each grade of gears are arranged on jack shaft 23 by hot jacket, with each grade of gear corresponding engagement one by one on the second axle 4.The idler shaft 25 of basic trnasmission is directly bearing on housing 3, idle pulley 26 passes through needle bearing 27 empty sets on idler shaft 25, both sides are with holding mill pad, and idle pulley 26, engaging with the reverse driving gear on jack shaft 23 simultaneously, is meshed with the reverse-gear on the second axle 4 again.Two, three, four, five grades adopt lock ring type synchronizer shifts, and one, reverse gear adopts collar shift.Realize the last function of basic trnasmission four in conjunction with upper cap assembly 5 and top cover assembly 6.

Under the choosing of top cover assembly 6, shift lever effect, shift fork system in upper cap assembly 5 starts to move forward and backward, tooth cover in synchronizer shift mechanism or collar shift mechanism between driving each grade moves forward and backward, combine with a certain shelves synchronous cone upper spline, free gear and second axle 4 of a certain gear on the first axle 1 or the second axle 4 are combined into one, realize the power of this gear on basic trnasmission and output to auxiliary transmission.

Rear case 12 is directly connected with housing 3.Auxiliary transmission input gear (sun gear) 8 is fixed on the second axle 4 of basic trnasmission by spline, and end face fastens; Planet carrier output shaft 16 be a rigid unitary, planet wheel 9 by needle bearing empty set on planet wheel shaft, planet wheel shaft is directly bearing on planet carrier output shaft 16, planet carrier output shaft 16 is bearing on rear case 12 by deep groove ball bearing 15, is meshed by planet wheel 9 with sun gear 8 simultaneously; Gear ring 21 becomes entirety with supporting base 18 by splined, is meshed with planet wheel 9, is bearing on deep groove ball bearing 19 simultaneously, and the outer ring of deep groove ball bearing 19 and supporting base 18 leave gap, realizes floating of planetary mechanism components and parts; High and low shift synchronizer assembly 10 is fixed on supporting base 18; Low-grade synchronous cone 13 is by spending strong being fixed on locking plate 20, and locking plate 20 is bolted on rear case 12; High-grade synchronous cone 14 is fixed on planet carrier output shaft 16 by spline.

By the conversion of manipulation high and low shift gear shift air valve gas circuit, under pressurized air effect, compressed air gearshift 11 moves forward and backward, and drives the 10 front and back gear shift of high and low shift synchromesh unit assembly, realizes the conversion of speed changer high and low shift region.Finally realize thus the last function of speed changer nine.

Will work in high-grade district as speed changer time, after compressed air gearshift 11, move, after driving the tooth cover on high and low shift synchromesh unit assembly 10, move and high-grade synchronous cone 14 combinations, now high-grade synchronous cone 14, planet carrier output shaft 16, supporting base 18, gear ring 21 become one; Now, because gear ring in planetary mechanism and planet carrier two element are fixed into one, whole planetary mechanism is a rigid unitary.Power is inputted auxiliary transmission by sun gear 8, and through planet carrier output shaft 16, output bead 17 is exported.

Will work in low-grade district as speed changer time, compressed air gearshift 11 moves forward, and drives the reach of tooth cover and low-grade synchronous cone 13 combinations on high and low shift synchromesh unit assembly 10, and now low-grade synchronous cone 13, locking plate 20, supporting base 18, gear ring 21 become one; Because locking plate 20 is fixed on rear case 12, now gear ring locking, because of planetary mechanism one element locking, the output of planetary mechanism gear ratio.Power, through sun gear 8, planet wheel 9, planet carrier output shaft 16, is exported by output bead 17.

Shown in Fig. 3, Fig. 4, housing 3 inner chambers at basic trnasmission are provided with oil-collecting delivery chute structure, this oil-collecting delivery chute structure comprises on the axial inner side of tank wall that is positioned at housing 3, low after front height, tail end flows out to odd-side inner chamber the oil-collecting lubrication groove 33 that oilhole 32 is connected with the main tank inner chamber in major and minor box cavity interval abutment wall 31; Meanwhile, in major and minor box cavity interval abutment wall 31 and a little higher than main tank inner chamber flow out on the position of oilhole 32 and also opened two odd-side inner chambers to main tank inner chamber backflow oilhole 34 to odd-side inner chamber.

The utility model is in the interior design oil-collecting of housing 3 delivery chute structure, lowly after front height be communicated with auxiliary transmission inner chamber, when speed changer work, lubricant oil is carried to auxiliary transmission from basic trnasmission at a gallop by oil-collecting lubrication groove 33, thereby raise auxiliary transmission oil level, give planet machinery, bearing lubrication in auxiliary transmission.

9 of speed changer forward gears gear numbers in the present embodiment, 1 of reverse gear gear number.Front 1 reverse gear in low-grade district 5, high-grade district 4 forward gearss; Two, three, four, five grades of basic trnasmissions are lock ring type synchronizer shift, one, reverse gear adopts collar shift.The transmission of auxiliary transmission planetary mechanism, point high and low two gears, large capacity lock ring type synchronizer shift, realizes the region conversion of high and low shelves.

The utility model is three grades of transmissions of four axle 11 gear one planetary mechanisms, has realized nine last astern power outputs.

Above-described embodiment is only for the model utility of the present utility model design of explaining, but not restriction to the utility model rights protection, allly utilizes this design to carry out the change of unsubstantiality to the utility model, all should fall into protection domain of the present utility model.

Claims (2)

1. the medium-sized automobile transmission with major and minor case, comprise basic trnasmission housing, be connected to the rear case of the auxiliary transmission at housing rear, it is characterized in that:

Described basic trnasmission is that parallel-axis type drive mechanism, auxiliary transmission are planetary transmission structure, high and low shift region conversion compressed-air shifting;

The housing inner chamber of described basic trnasmission is provided with oil-collecting delivery chute structure, this oil-collecting delivery chute structure comprises on the axial inner side of tank wall that is positioned at housing, low after front height, tail end flows out to odd-side inner chamber the oil-collecting lubrication groove that oilhole is connected with the main tank inner chamber in the abutment wall of major and minor box cavity interval; Meanwhile, in the abutment wall of major and minor box cavity interval and higher than main tank inner chamber, on the position of odd-side inner chamber outflow oilhole, also opened odd-side inner chamber to main tank inner chamber backflow oilhole.

2. the medium-sized automobile transmission with major and minor case as claimed in claim 1, is characterized in that: described odd-side inner chamber is two to main tank inner chamber backflow oilhole.

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