CN102797809B - Planetary gear type 6-speed automatic speed changer - Google Patents

Abstract

The invention relates to a planetary gear type 6-speed automatic speed changer, which comprises a speed changer shell, a first planetary gear set, a second planetary gear set, an input shaft and an output shaft, wherein the speed changer shell is provided with a first brake, a second brake and an one-way clutch; a first transmission gear is installed on the input shaft; a second transmission gear, the first brake and a second clutch are sleeved on the input shaft; the first planetary gear set comprises a first planetary sun gear sleeved on the output shaft, a first planetary gear and a first planetary outer gear ring; and the second planetary gear set comprises a second planetary sun gear sleeved on the output shaft, a second planetary gear and a second planetary outer gear ring. The automatic speed changer provided by the invention has the advantages of simple structure and reasonable design, and can improve the efficiency of the speed changer effectively, optimize the performance of responsiveness, ride performance and the like, and further reduce the size and the weight of the automatic speed changer.

Description

A kind of planetary gear type 6 gear transmissions

Technical field

The present invention relates to a kind of multi-speed automatic transmission, particularly relate to a kind of planetary gear type 6 gear transmissions.

Background technique

Automatic transmission is one of topmost parts in the automotive transmission, be by changing velocity ratio, change the torque of engine crankshaft, satisfy and start to walk, accelerate, travel and overcoming under the different driving conditions such as different kinds of roads obstruction driving the needs of the different requirements of net tractive force of wheel and the speed of a motor vehicle.Although existing speed changer has been realized its intended purposes, along with developing of automobile industry, new speed changer is to the demands for higher performance of aspects such as efficient, responsiveness and smoothness, and urgent need reduces size and the weight of traditional speed changer.

Summary of the invention

The objective of the invention is to overcome the deficiency that exists in the above-mentioned technology, provide a kind of simple in structure, reasonable in design, with low cost, planetary gear type 6 gear transmissions of moulding compactness.In order to achieve the above object, the technical solution used in the present invention is: comprise case of transmission, first planetary gear set, second planetary gear set, input shaft, output shaft, described case of transmission is provided with first break, second break, overrunning clutch, first driving gear is installed on the described input shaft, be set with second driving gear, first break, second clutch, and be connected with the 3rd driving gear by first clutch, described second clutch and first driving gear, first break, second driving gear is fixedly connected, described first driving gear and the engagement of the 6th driving gear, second driving gear and the engagement of the 5th driving gear, the 3rd driving gear and the engagement of the 4th driving gear, described first planetary gear set comprises the first planet sun gear that is sleeved on the output shaft, first planetary pinion with the engagement of the first planet sun gear, the first planet external toothing with the engagement of first planetary pinion, described first planetary pinion is fixedlyed connected with the 4th driving gear by first planet carrier, the described first planet external toothing is fixedlyed connected with output shaft, the 4th driving gear is fixedly connected overrunning clutch and second break simultaneously, described second planetary gear set comprises the second planet sun gear that is sleeved on the output shaft, second planetary pinion with the engagement of the second planet sun gear, the second planet external toothing with the engagement of second planetary pinion, the described second planet external toothing is connected with the 6th driving gear by three-clutch, second planetary pinion is fixedly connected on the output shaft by second planet carrier, described the 5th driving gear is sleeved on the output shaft, and with the first planet sun gear, the second planet sun gear is fixedly connected.Advantage of the present invention is: 1, simple in structure, reasonable in design, reduce manufacture difficulty and cost; 2, volume is little, and installation is simple, convenient, has saved installing space; 3, the efficient height of speed changer, responsiveness and smoothness are good.

Description of drawings

Fig. 1 is structural principle schematic representation of the present invention;

Fig. 2 is 1 retaining transmission of power schematic representation;

Fig. 3 is 2 retaining transmission of power schematic representation;

Fig. 4 is 3 retaining transmission of power schematic representation;

Fig. 5 is 4 retaining transmission of power schematic representation;

Fig. 6 is 5 retaining transmission of power schematic representation;

Fig. 7 is 6 retaining transmission of power schematic representation;

Fig. 8 is the transmission of power schematic representation that reverses gear.

Embodiment

Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.By Fig. 1-Fig. 8 as can be known, the present invention includes case of transmission, first planetary gear set, second planetary gear set, input shaft, output shaft, described case of transmission 25 is provided with first break 23, second break 24, overrunning clutch 22, first driving gear 2 is installed on the described input shaft 1, be set with second driving gear 4, first break 23, second clutch 19, and be connected with the 3rd driving gear 6 by first clutch 21, described second clutch 19 and first driving gear 2, first break 23, second driving gear 4 is fixedly connected, described first driving gear 2 and 3 engagements of the 6th driving gear, second driving gear 4 and 5 engagements of the 5th driving gear, the 3rd driving gear 6 and 7 engagements of the 4th driving gear, described first planetary gear set comprises the first planet sun gear 10 that is sleeved on the output shaft 18, first planetary pinion 9 with 10 engagements of the first planet sun gear, the first planet external toothing 8 with 9 engagements of first planetary pinion, described first planetary pinion 9 is fixedlyed connected with the 4th driving gear 7 by first planet carrier 11, the described first planet external toothing 8 is fixedlyed connected with output shaft 18, the 4th driving gear 7 is fixedly connected overrunning clutch 22 and second break 24 simultaneously, described second planetary gear set comprises the second planet sun gear 12 that is sleeved on the output shaft 18, second planetary pinion 13 with 12 engagements of the second planet sun gear, the second planet external toothing 14 with 13 engagements of second planetary pinion, the described second planet external toothing 14 is connected with the 6th driving gear 3 by three-clutch 20, second planetary pinion 13 is fixedly connected on the output shaft 18 by second planet carrier 15, described the 5th driving gear 5 is sleeved on the output shaft 18, and with the first planet sun gear 10, the second planet sun gear 12 is fixedly connected.The present invention adopts a kind of 6 new gear transmission planetary structures to arrange, realizes the forward gear of 6 kinds of speed ratios by 2 groups of planetary mechanisms, 2 groups of breaks, 3 groups of clutches, 1 overrunning clutch, 3 groups of driving gears, the reversing gear of a kind of speed ratio.2 groups of planetary mechanisms are arranged on the output shaft, and 2 groups of planetary gear train on the output shaft are simple planetary mechanism.The power that motor produces imports input shaft 1 into via fluid torque converter 17, the guide wheel of fluid torque converter 17 is fixedly connected on the case of transmission 25, input shaft 1 is connected with first clutch 21 with first driving gear 2, first driving gear 2 connects second clutch 19, and with the engagement of the 6th driving gear 3, second clutch 19 is connecting second driving gear 4 simultaneously and first break, 23, the first breaks 23 link to each other with case of transmission 25, second driving gear 4 and 5 engagements of the 5th driving gear.By the combination of second clutch 19, can give second driving gear 4 with the transmission of power of input shaft 1, and then pass to the 5th driving gear 5 like this.23 combinations of first break can make second driving gear 4 maintain static moving.First clutch 21 is connected with the 3rd driving gear 6, the 3rd driving gear 6 and 7 engagements of the 4th driving gear, the 4th driving gear 7 is connecting overrunning clutch 22, second break 24 and first planet carrier 11 simultaneously, overrunning clutch 22 is connected case of transmission with second break 24, first planetary pinion 9 is installed on first planet carrier 11, and first planetary pinion 9 meshes with the first planet external toothing 8 and the first planet sun gear 10 respectively.By the combination of first clutch 21, can give first planet carrier 11 for the 4th driving gear 7, the four driving gears 7 transferring power the transmission of power of input shaft 1 like this.24 combinations of second break can make first planet carrier 11 fixing.The first planet sun gear 10 is fixedlyed connected with the second planet sun gear 12 with the 5th driving gear 5, the second planet sun gear 12 and 13 engagements of second planetary pinion, second planetary pinion 13 and 14 engagements of the second planet external toothing, the second planet external toothing 14 is connected with three-clutch 20, three-clutch 20 is connected with the 6th driving gear 3, second planetary pinion 13 is installed on second planet carrier 15, and output shaft 18 connects second planet carrier 15, is connecting the first planet external toothing 8 and driving gear 16 simultaneously.By the combination of three-clutch 20, the power of input shaft 1 can be passed to second planetary gear set through first driving gear 2 and the 6th driving gear 3 like this.By the various combination of clutch and break, realize the selection of the different speed ratios of planetary mechanism, as follows in detail: 1 retaining: three- clutch 20,24 combinations of second break; Power passes to input shaft 1, first driving gear 2, the 6th driving gear 3, three-clutch 20, the second planet external toothing 14 by fluid torque converter 17; Because 24 combinations of second break, first planet carrier 11 maintains static; Give second planetary pinion 13, the second planet sun gear 12, the first planet sun gear 10, first planetary pinion 9, the first planet external toothing 8, output shaft 18, driving gear 16 from the transmission of power that second external toothing 14 transmits, power is delivered to semiaxis and wheel from driving gear 16.2 retainings: three- clutch 20,23 combinations of first break; Power passes to input shaft 1, first driving gear 2, the 6th driving gear 3, three-clutch 20, the second planet external toothing 14 by fluid torque converter 17; 23 combinations of first break, second driving gear 4, the 5th driving gear 5 and the second planet sun gear 12 maintain static; Give second planetary pinion 13, second planet carrier 15, output shaft 18, driving gear 16 from the transmission of power that the second planet external toothing 14 transmits, power is delivered to semiaxis and wheel from driving gear 16.3 retainings: three-clutch 20, second clutch 19 combinations; Power passes to input shaft 1, second clutch 19, second driving gear 4, the 5th driving gear 5, the second planet sun gear 12, second planetary pinion 13 by fluid torque converter 17; Another part power is by input shaft 1, first driving gear 2, the 6th driving gear 3, three-clutch 20, the second planet external toothing 14, second planetary pinion 13, final two-part power passes to second planetary pinion 13, second planet carrier 15, output shaft 18, driving gear 16 together, and power is delivered to semiaxis and wheel from driving gear 16.4 retainings: three-clutch 20, first clutch 21 combinations; Power passes to input shaft 1, first driving gear 2, the 6th driving gear 3 by fluid torque converter 17; Three-clutch 20, the second planet external toothing 14, second planetary pinion 13, second planet carrier 15; Another part power is by input shaft 1, first clutch 21, the 3rd driving gear 6, the 4th driving gear 7, first planet carrier 11, first planetary pinion 9, the first planet external toothing 8, final two-part power passes to output shaft 18, driving gear 16 together, and power is delivered to semiaxis and wheel from driving gear 16.5 retainings: second clutch 19, first clutch 21 combinations; Power passes to input shaft 1, second clutch 19, second driving gear 4, the 5th driving gear 5, the first planet sun gear 10, first planetary pinion 9, the first planet external toothing 8 by fluid torque converter 17; Another part power is by input shaft 1, first clutch 21, the 3rd driving gear 6, the 4th driving gear 7, first planet carrier 11, first planetary pinion 9, the first planet external toothing 8, final two-part power passes to the first planet external toothing 8, output shaft 18, driving gear 16 together, and power is delivered to semiaxis and wheel from driving gear 16.6 retainings: first clutch 21,23 combinations of first break; Power passes to input shaft 1, first clutch 21, the 3rd driving gear 6, the 4th driving gear 7, first planet carrier 11, first planetary pinion 9 by fluid torque converter 17; Because first break, 23 combinations, second driving gear 4, the 5th driving gear 5, the first planet sun gear 10 maintain static, transmit the transmission of power of coming from first planetary pinion 9 and give the first planet external toothing 8, output shaft 18, driving gear 16, power is delivered to semiaxis and wheel from driving gear 16.Reverse gear: second clutch 19,24 combinations of second break.Power passes to input shaft 1, second clutch 19, second driving gear 4, the 5th driving gear 5, the first planet sun gear 10, first planetary pinion 9 by fluid torque converter 17; Because 24 combinations of second break, first planet carrier 11 maintains static, and transmits the transmission of power of coming from first planetary pinion 9 and gives the first planet external toothing 8, output shaft 18, driving gear 16, and power is delivered to semiaxis and wheel from driving gear 16.The present invention can effectively improve the efficient of speed changer, optimizes the performance of aspects such as responsiveness and smoothness, and has reduced size and the weight of automatic transmission.

Claims (1)

1. planetary gear type 6 gear transmissions, comprise case of transmission, first planetary gear set, second planetary gear set, input shaft, output shaft, it is characterized in that: described case of transmission (25) is provided with first break (23), second break (24), overrunning clutch (22), first driving gear (2) is installed on the described input shaft (1), be set with second driving gear (4), first break (23), second clutch (19), and be connected with the 3rd driving gear (6) by first clutch (21), described second clutch (19) and first driving gear (2), first break (23), second driving gear (4) is fixedly connected, described first driving gear (2) and the 6th driving gear (3) engagement, second driving gear (4) and the 5th driving gear (5) engagement, the 3rd driving gear (6) and the 4th driving gear (7) engagement, described first planetary gear set comprises the first planet sun gear (10) that is sleeved on the output shaft (18), first planetary pinion (9) with the engagement of the first planet sun gear (10), the first planet external toothing (8) with first planetary pinion (9) engagement, described first planetary pinion (9) is fixedlyed connected with the 4th driving gear (7) by first planet carrier (11), the described first planet external toothing (8) is fixedlyed connected with output shaft (18), the 4th driving gear (7) is fixedly connected overrunning clutch (22) and second break (24) simultaneously, described second planetary gear set comprises the second planet sun gear (12) that is sleeved on the output shaft (18), second planetary pinion (13) with the engagement of the second planet sun gear (12), the second planet external toothing (14) with second planetary pinion (13) engagement, the described second planet external toothing (14) is connected with the 6th driving gear (3) by three-clutch (20), second planetary pinion (13) is fixedly connected on the output shaft (18) by second planet carrier (15), described the 5th driving gear (5) is sleeved on the output shaft (18), and with the first planet sun gear (10), the second planet sun gear (12) is fixedly connected.

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