RU2631759C1 - Coaxial gearbox with two clutches (design versions) - Google Patents

Abstract

FIELD: machine engineering.

SUBSTANCE: coaxial gearbox with two clutches is provided for installing an engagement clutch rigidly connecting an intermediate shaft to gear cluster.

EFFECT: high degree of unification and reduction of production and repair costs.

14 cl, 21 dwg

Description

The invention relates to transport machinery, in particular to automated transmissions.

A known gearbox with two multi-plate clutches, containing two coaxial drive shafts located one inside the other, with even and odd gears mounted on them, engaged with permanent gears of the corresponding gears, which can be rigidly connected using synchronizers with driven shafts ( Ivanov A.N., Solntsev A.N., Gaevsky V.V. et al. Fundamentals of the design of a car. - M.: Book Publishing House 3a Rulem OOO, 2005. - 166 pp., Ill.).

A known design variant of the coaxial gearbox (KP) with two clutches ZF (see patent DE 102013200196 A1 of 07/10/2014, Fig. 20).

The gearbox consists of two parts - the main gearbox and the rear gear demultiplier. The main gearbox, which has a similar design fragment, consists of a housing with coaxial input and output shafts located in it and an intermediate shaft parallel to them. Two input shafts, one-piece and tubular, are coaxial, located one inside the other and one fixed gear is fixed to them. Four gears are fixed on the countershaft and one of them is coupled to the gear of the tubular input shaft, three gears are mounted freely, combined into a block of three gears and one of them is coupled to the gear of the whole input shaft, and all the others are coupled to gears that are installed freely and in pairs on the output shaft, on which there are three clutch couplings that are rigidly connected to the output gear shaft and the integral input shaft (direct transmission).

The disadvantage of the KP is the unforeseen possibility of increasing the number of gears and gear ratios.

The aim of the invention is a coaxial gearbox with two clutches with the possibility of further modification - increase the number of gears and gear ratios.

This goal is achieved by the fact that it is possible to install the clutch, rigidly connecting the intermediate shaft to the gear block.

It is also possible that the output clutch and the driven reverse gear are located on the output shaft, which is coupled through an intermediate gear or through a gear combined with an intermediate gear in a block of two gears, with a drive gear fixed to the intermediate shaft.

It is also possible that a gear is engaged with a gear fixed to the countershaft, which is rigidly connected to the output shaft by a clutch coupled to a reverse gear clutch.

It is also possible that the outer gear of the output shaft is rigidly connected by the clutch with the planet carrier of the planetary gear having a clutch of the upper or lower range and the sun gear mounted on the output shaft.

It is also possible that an engagement clutch and a gear coupled to the gear rigidly connected to the output shaft are located on the intermediate shaft.

It is also possible that on the intermediate shaft there is an on clutch and two gears, one of which is coupled to the gear rigidly connected to the output shaft, and the other is coupled to the gear rigidly connected to the planet carrier of the demultiplier having the upper or lower range clutch and sun gear mounted on the output shaft.

It is also possible that on the intermediate shaft there is a clutch and a gear coupled to the gear rigidly connected to the planet carrier of the planetary gear having a higher or lower range clutch and a sun gear mounted on the output shaft.

It is also possible that a gear coupled to the gear is fixed on the countershaft, which is tightly connected by the clutch on to the planet carrier of the planetary gear having a clutch on the upper or lower range and a sun gear mounted on the output shaft.

It is also possible that an inclusion clutch is mounted rigidly connecting the intermediate shaft to the gear, which is engaged with the gear rigidly connected to the entire input shaft, and this inclusion clutch is installed separately or combined with the inclusion clutch, rigidly connecting the intermediate shaft to the gear block.

It is also possible that on the intermediate shaft there is a clutch and a driven reverse gear, which is coupled through an intermediate gear or through a gear combined with an intermediate, into a block of two gears, with a drive gear fixed to a single input shaft.

It is also possible that a gear is engaged with a gear fixed to the integral input shaft, which is rigidly connected to the intermediate shaft by an engagement clutch combined with a reverse gear engagement clutch.

It is also possible that an engagement clutch is installed that rigidly connects the intermediate shaft to the gear block or gear, which is engaged with the gear rigidly connected to the integral input shaft.

It is also possible that an engagement clutch is connected to the reverse gear clutch, which rigidly connects the intermediate shaft to the gear block.

It is also possible that the outer gear of the output shaft is rigidly connected by the clutch with the planet carrier of the planetary gear having a clutch of the upper or lower range and the sun gear mounted on the output shaft.

In FIG. 1 shows a basic kinematic diagram of a dual-clutch coaxial gearbox.

In FIG. 2 shows a kinematic diagram of a design variant of a 6-speed gearbox.

In FIG. 3 is a beam diagram of a 6-speed gearbox. On the horizontal are the numbers of various gears. The lower scale indicates gear ratios. A beam pointing to the right indicates a deceleration. The better the beam, the greater the gear ratio. A beam pointing to the left indicates an accelerating gear. For a better understanding, the ray represented by the dashed line indicates reverse gear.

In FIG. 4 shows a kinematic diagram of an embodiment of an 8- or 7-speed gearbox according to claim 2.

In FIG. 5 is a beam diagram of an 8-speed gearbox.

In FIG. 6 and 7 are beam diagrams of the 7/8-speed gearbox depicted in FIG. four.

In FIG. 8 shows a kinematic diagram of an embodiment of a 7-speed gearbox according to claim 5.

In FIG. 9 is a beam diagram of a 7-speed gearbox depicted in FIG. 8.

In FIG. 10 shows a kinematic diagram of an embodiment of an 8- or 7-speed gearbox according to claim 10.

In FIG. 11 and 12 are beam diagrams of the 8-speed gearbox shown in FIG. 10.

In FIG. 13 is a beam diagram of the 7/8-speed gearbox shown in FIG. 10.

In FIG. 14 is a kinematic diagram of an embodiment of a 14-speed gearbox according to paragraphs 10 and 13 of the claims.

In FIG. 15 is a beam diagram of the 14-speed gearbox depicted in FIG. fourteen.

In FIG. 16 shows a kinematic diagram of an embodiment of a 12-speed gearbox according to paragraphs 10 and 13 of the claims.

In FIG. 17 is a beam diagram of a 12-speed gearbox depicted in FIG. 16.

In FIG. 18 is a kinematic diagram of an embodiment of a 12-speed gearbox according to claim 7.

In FIG. 19 is a kinematic diagram of an embodiment of a 13-speed gearbox according to claim 6.

In FIG. 20 shows a kinematic diagram of an embodiment of a 7-speed gearbox according to claim 3.

In FIG. 21 is a beam diagram of a 7-speed gearbox depicted in FIG. twenty.

The composition shown in FIG. 1 of the basic kinematic scheme of the gearbox includes two coaxial input shafts installed in the bearings of the housing 1, located one inside the other - tubular 2 and integral 3. The output shaft 4 is installed coaxially with them and the intermediate shaft 5 is parallel to them. The gears 6 and 7 are rigidly connected to the input shafts 2 and 3, respectively. Gear 8 is rigidly connected to the intermediate shaft 5 and engaged with gear 6. Gears 9, 10 and 11 are freely mounted on the intermediate shaft 5, combined into a block of three gears and engaged with gears 7,12 and 13, respectively. Gears 12 and 13 are freely mounted on the output shaft 4. Gears 14, 15 and 16 are rigidly connected to the intermediate shaft 5 and are engaged with gears 17, 18 and 19, freely mounted on the output shaft 4. Clutches A (20), B (21) and C (22) are located on the output shaft 4 between the gears 7-12, 13-17 and 18-19, respectively. The driven disc 23 of the left clutch (L) is mounted on the input shaft 3, and the driven disc 24 of the right clutch (P) is mounted on the input shaft 2.

The composition shown in FIG. 2 of the kinematic scheme of the 6-speed gearbox design variant, the same details are included as in the composition discussed above, the base gearbox and additionally: gear 25 is freely mounted on the output shaft 4 and coupled to gear 16 through the intermediate gear 26. Clutch D (27 ) reverse gear is located on the output shaft 4 next to the gear 25.

The composition shown in FIG. 4 of the kinematic diagram of the design variant of the 8- or 7-speed gearbox, the same parts are included as in the composition discussed above, the 6-speed gearbox and additionally: the coupling E (28) is rigidly connected to the block of three gears 9-10-11 and is located between gears 8 and 9.

The composition shown in FIG. 8 of the kinematic diagram of the design variant of the 7-speed gearbox includes the same details as the composition discussed above, the 6-speed gearbox and additionally: gear 29 is freely mounted on the intermediate shaft 5 and engaged with gear 30, rigidly connected to the output shaft 4 The clutch F (31) is located on the countershaft 5 next to the gear 29.

The composition shown in FIG. 10 of the kinematic diagram of a design variant of an 8- or 7-speed gearbox includes the same details as the structure discussed above, the base gearbox and additionally: gear 32 is rigidly connected to the integral input shaft 3 and is coupled, through the intermediate gear 33, to the driven a reverse gear 34, freely mounted on the countershaft 5. The ring gear 35 is rigidly connected to the block of three gears 9-10-11. The reverse gear shift clutch and the one of the extreme forward gear clutch are combined in the gear clutch M (36) located on the intermediate shaft 5 between the gear 34 and the ring gear 35.

The composition shown in FIG. 14 of the kinematic diagram of the design variant of the 14-speed gearbox includes the same details as in the previous structure discussed above, and additionally: the sun gear 37 of the planetary gearbox is mounted on the output shaft 4, and the coupling hub N is rigidly connected to its epicyclic gear 38 39). A gear rim 40 is fixed on the gearbox housing 1, and gear rims 42 and 43 are mounted on the gear carrier 41 of the demultiplier. The coupling hub K is rigidly connected to gear 19 (44). Drove 41 demultiplicator mounted on the shaft 45 of the drive of the drive wheels.

The composition shown in FIG. 18, the kinematic diagram of the design variant of the 12-speed gearbox includes the same parts as the gearbox shown in FIG. 8, but the gear 30 is freely mounted on the output shaft 4. And additionally, the sun gear 37 of the planetary demultiplier is fixed on the output shaft 4, and the coupling hub N (39) is rigidly connected to its epicyclic gear 38. A gear ring 40 is fixed on the gearbox housing 1. A gear box 41 is rigidly connected to the gear 30, which is fixed to the drive shaft 45 of the drive.

The composition shown in FIG. 19 of the kinematic diagram of the design variant of the 13-speed gearbox includes the same parts as the gearbox shown in FIG. 8. And additionally, the sun gear 37 of the planetary demultiplier is fixed on the output shaft 4, and the coupling hub N (39) is rigidly connected to its epicyclic gear 38. A gear 46 is freely mounted on the intermediate shaft 5, coupled to the gear 47, which is freely mounted on the output shaft 4 and is rigidly connected to the gear carrier 41, which is mounted on the drive shaft 45 of the drive. The engagement clutch FA (48) is mounted on the countershaft 5, between gears 29 and 46.

The composition shown in FIG. 20 of the kinematic diagram of the design variant of the 7-speed gearbox includes the same details as the composition discussed above, the 6-speed gearbox, but gears 49 and 50 are installed in place of gears 14 and 17, respectively. Gear 49 is rigidly connected to the intermediate shaft 5 and coupled to the gear 30 freely mounted on the output shaft 4. The gears 14, 17, 16 and others have an alternative mounting location on the shafts of the gearbox according to the invention.

The basic scheme of the coaxial gearbox with two clutches proposed by this invention allows to obtain design options with the possibility of further modification - increasing the number of gears, including through the use of a planetary gearbox (demultiplier). Therefore, in view of the need for a summary, but with the completeness sufficient for the implementation of the invention, the operation of the basic circuit shown in FIG. 1, let us consider, using two examples of the design of the 8-speed gearbox (see Figs. 4 and 10) and the design variant of the gearbox with a planetary gear (see Fig. 14), obtained on the basis of the 8-speed gearbox shown in FIG. 10.

The work of the 8-speed gearbox, shown in figure 4, is as follows.

1st gear.

We turn on the left clutch (L), switch the clutch C to the right position, and the clutch E to the left. The torque from the input shaft 3, through a pair of coupled gears 7-9, the clutch E is transmitted to the intermediate shaft 5, a pair of gears 16-19, the clutch C and the output shaft 4.

On the radiation diagram (see Fig. 5), this transmission is reflected in series by beams 0-II, II -1.

2, 4 and 6 gears.

They are carried out in a manner that is understandable to a specialist by transmitting torque with the right clutch (P) to the input shaft 2, through a pair of engaged gears 6-8 to the intermediate shaft 5, pairs of gears 16-19 (2 gears), 15-18 (4 gears), 14-17 (6th gear), clutch C, located in the right (2nd gear) or left (4th gear) position, clutch B, in the right position (6th gear), on the output shaft 4.

On the radiation diagram (see Fig. 5) 2, the transmission is reflected in series with connected beams: 0-I, I-2; 4th gear - rays: 0-I, I-4; 6th gear - by beams: 0-I, I-6.

3, 5 and 7 (direct) transmission.

They are carried out in a manner that is understandable to a specialist by transmitting torque with a left clutch (L) to the input shaft 3, through a pair of coupled gears 7-9, to a block of three gears 9-10-11, pairs of gears 11-13 (3rd gear), 10-12 (5 gear), clutch B, in the left position (3rd gear), clutch A, in the right (5th gear) or left (7th gear) position on the output shaft 4.

On the radiation diagram (see Fig. 5), 3 the transmission is reflected in series connected beams: 0-II, II-3; 5th gear - by rays: 0-II, II-5; 7th gear - point O.

8th gear.

We engage the right clutch (P), couplings A and E are in the left position. Torque from the input shaft 2 through a pair of coupled gears 6-8, clutch E, a pair of gears 9-7 and clutch A is transmitted to the output shaft 4.

On the radiation diagram (see Fig. 5), this transmission is reflected in series by the connected beams 0-I, I-8.

Reverse.

We turn on the left clutch (L), clutches D and E in the left position. Torque from the input shaft 3 through a pair of gears 7-9, the clutch E is transmitted to the intermediate shaft 5, a pair of gears 16-26-25 and the clutch D to the output shaft 4. On the radiation diagram (see Fig. 5) this transmission is reflected by the beam 0-II and then a ray from a dashed line to the letters ZX.

The operation of the 8-speed gearbox shown in FIG. 10 is carried out as follows.

1-8 gears.

They are carried out similarly to the work described above in 1-8 gears, respectively, but instead of clutch E, clutch M is used, which is switched in the 1st or 8th gear to the right position.

Reverse.

We turn on the left clutch (L), switch the clutch C to the right position, and the clutch M to the left. The torque from the input shaft 3, through the engaged gears 32-33-34, the clutch M, is transmitted to the intermediate shaft 5, a pair of gears 16-19 and the clutch C to the output shaft 4. On the beam diagram (see Fig. 10) this transmission reflected by two series-connected beams from a dashed line from point O to the letters ZX.

The operation of the 14-speed gearbox shown in FIG. 14 is carried out as follows.

1-7 gears, reverse. They are carried out similarly to the work of the 8-speed gearbox shown in FIG. 8, in 1-7 gears and reverse gear, respectively, but from the output shaft 4, the torque is supplied to the sun gear 37 of the planetary demultiplier, which has an epicyclic wheel 38, through the clutch N and the ring gear 40 is rigidly connected to the gearbox housing 1. And further, the torque, according to the prior art of the planetary demultiplier, comes from the carrier 41 to the drive shaft 45 of the drive wheel. During gearbox operation in 7th gear, while continuing to increase the engine speed and vehicle speed, clutch K switches to the right position.

8th gear.

It is carried out similarly to the work of the 8-speed gearbox 2 considered above, respectively, but from gear 19, through the clutch K and the gear ring 43, the torque is supplied to the planet carrier 41 of the planetary gear and the drive shaft 45 of the drive. During gearbox operation in 8th gear, while continuing to increase the engine speed and vehicle speed, clutch N switches to the left position. As a result, the planetary demultiplier is blocked - the epicyclic wheel 38, through the clutch N and the ring gear 42, is rigidly connected to the carrier 41.

9, 10, 11, 12, 13 and 14 gears.

Carried out similarly to the work of the 8-speed gearbox discussed above in 3, 4, 5, 6, 7, and 8 gears, respectively, but from the output shaft 4, through a locked planetary gear, the torque is transmitted to the drive shaft 45 of the drive wheel.

The technical result of using the basic scheme of a coaxial gearbox with two clutches is to obtain options for the design of the gearbox with the possibility of further modification - increasing the number of gears and gear ratios. At the same time, most of the components and parts of the newly obtained gearboxes remain unchanged, which ensures a high degree of unification and a reduction in production and repair costs.

In the given examples of design options for coaxial gearboxes, gears with variable inclusion of two clutches are considered. Also, sequential gears with operation on the same clutch are possible, but they are not indicated and are not considered.

On kinematic diagrams confirming the possibility of obtaining the designs of coaxial gearboxes proposed by this invention, only some options are presented that differ from other possible options, with the indicated features, essential and interconnected, forming a stable set of essential features, sufficient to obtain a technical result - an alternative the arrangement of pairs of gears on the shafts, the number of clutches, bearings in the gearbox housing and / or transverse partition (with PIR) number of intermediate rolls, etc.

Claims (15)

1. Coaxial gearbox with two clutches, comprising a double clutch assembly, a housing with two coaxial input shafts located inside it, integral and tubular, an output shaft coaxial to it and at least one intermediate shaft parallel to it, with installed on them the gears of constant engagement of even and odd gears, and at least two gears are mounted freely on the intermediate shaft, combined into a gear block and one of them is engaged with the gear of the whole input shaft, The gears are fixedly mounted and one of them is coupled to a single gear of the tubular input shaft, and all others are coupled to gears that are freely mounted on the output shaft, on which at least three inclusion clutches are located, rigidly connecting the gears to the output shaft and the integral input shaft , characterized in that it is possible to install the clutch, rigidly connecting the intermediate shaft with the gear block. 2. A coaxial gearbox with two clutches according to claim 1, characterized in that the output clutch and the driven reverse gear are located on the output shaft, which is coupled through an intermediate gear or through a gear combined with an intermediate gear in a block of two gears, with a leading gear fixed on the countershaft. 3. Coaxial gearbox with two clutches according to claim 2, characterized in that a gear is engaged with the gear fixed to the intermediate shaft, which is tightly connected to the output shaft by the clutch combined with the reverse gear clutch. 4. Coaxial gearbox with two clutches according to claim 3, characterized in that the final gear of the output shaft rigidly connects the clutch on with the planet carrier of the demultiplier having a clutch on the upper or lower range and the sun gear mounted on the output shaft. 5. Coaxial gearbox with two clutches according to claim 2, characterized in that on the intermediate shaft there are an engagement clutch and gear engaged with the gear rigidly connected to the output shaft. 6. Coaxial gearbox with two clutches according to claim 2, characterized in that the onion shaft has an on clutch and two gears, one of which is coupled to the gear rigidly connected to the output shaft, and the other is coupled to the gear rigidly connected to planet carrier of a demultiplier having a clutch for switching on of the upper or lower range and a sun gear mounted on the output shaft. 7. Coaxial gearbox with two clutches according to claim 2, characterized in that on the intermediate shaft there are an engagement clutch and a gear engaged with a gear rigidly connected to the planet carrier of the planetary gearbox having an engagement clutch of a higher or lower range and a sun gear fixed to output shaft. 8. The coaxial gearbox with two clutches according to claim 2, characterized in that a gear coupled to the gear is fixed to the intermediate shaft, which is tightly connected by the clutch to the planet carrier of the demultiplier, having a clutch of the upper or lower range and a sun gear fixed to output shaft. 9. Coaxial gearbox with two clutches according to one of paragraphs. 1-8, characterized in that the inclusion clutch is installed, rigidly connecting the intermediate shaft to the gear, which is engaged with the gear rigidly connected to the solid input shaft, moreover, this inclusion clutch is installed separately or combined with the clutch, rigidly connecting the intermediate shaft to the gear block . 10. Coaxial gearbox with two clutches according to claim 1, characterized in that on the intermediate shaft there is a clutch and a driven reverse gear, which is coupled through an intermediate gear or through a gear combined with an intermediate gear in a block of two gears, with a leading gear fixed on a single input shaft. 11. Coaxial gearbox with two clutches according to claim 10, characterized in that a gear is engaged with the gear fixed to the integral input shaft, which is connected rigidly to the intermediate shaft by the clutch combined with the reverse gear clutch. 12. The coaxial gearbox with two clutches according to claim 10, characterized in that an engagement clutch is installed that rigidly connects the intermediate shaft to the gear block or gear, which is coupled to the gear rigidly connected to the integral input shaft. 13. Coaxial gearbox with two clutches according to claim 10, characterized in that the inclusion clutch is connected to the reverse gear clutch, which rigidly connects the intermediate shaft to the gear block. 14. Coaxial gearbox with two clutches according to one of paragraphs. 10-13, characterized in that the extreme gear of the output shaft is rigidly connected by the clutch on with the planet carrier of the demultiplier having a clutch on the upper or lower range and the sun gear mounted on the output shaft. .

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