RU2793166C1 - Transmission with two parallel output shafts - Google Patents

Abstract

FIELD: vehicle transmission.

SUBSTANCE: transmission with two parallel output shafts comprises a multi-stage gearbox (MSG) that combines two functions: changing the torque in magnitude, as well as a turning mechanism. Two reverse bevel gears are installed at the output of the MSG, which change the direction of rotation of the drive shafts of the final drives.

EFFECT: expansion of layout and operational capabilities of NTS is achieved.

1 cl, 3 dwg

Description

The invention relates to the transmission of caterpillar NTS (ground vehicles).

Known gearbox schemes (gearboxes) with a branched power flow (1. Design of vehicle transmissions: a Handbook / Under the general editorship of A.I. Grishkevich. - M.: Mashinostroenie, 1984, - 272 p.). Compared to traditional gearboxes, gearboxes with branched power flow have more gears. However, they have smaller dimensions and, consequently, lower moments of inertia and peripheral speeds. The use of such schemes makes it possible to increase the service life of the gearbox at high values of the transmitted power. On fig. 7.5, a (see 1, p. 166) shows a gearbox diagram with two parallel intermediate shafts.

But this gearbox is coaxial, it has only one output shaft.

Closest to the proposed device is a twin-shaft non-coaxial MCP (multi-stage gearbox) according to the RU patent (2: No. 2261183. Bull. 27 of 27.09.2005. Author V.I. Nekrasov). This type 12R4 manual gearbox (12 forward and 4 reverse gears) has two parallel shafts: an input shaft, which is divided into two parts (main and additional shafts), and an output shaft. Four gears are fixed on an additional shaft. Eight gears are freely located on the main input and output shafts. Two gears are combined into a block by a tubular shaft. The additional reverse gear is mounted on an axle located between the additional input and output shafts. Gear shifting is carried out by three three-position clutches of a traditional layout, as well as a dual two-position clutch with a common shift fork.

This MCP has only one output shaft, which limits the layout and operational characteristics of the NTS, including in ensuring the rotation of the GM. (3. Calculation and design of tracked vehicles. Edited by N.A. Nosov. - L .: Mashinostroenie, 1972. 560 p.). Chapter IX. Turning mechanisms, p. 346-398. On fig. IX.9, p. 368 shows a complex turning pattern with two final drives.

The objective of the invention is to expand the layout and operational characteristics of the NTS by dividing the power flow into two shafts, the possibility of rotating each shaft at a speed different from the speed of rotation of the other output shaft, which will provide different calculated relative turning radii. The multi-stage transmission with two parallel output shafts combines the functions of the manual gearbox and the MP (turning mechanism).

The technical result is achieved by improving the technical solution according to patent No. 2261183 by dividing the power flow into two parallel output shafts, replacing a row of reverse gears with a pair of forward gears, which increases the number of gears from 12 to 16, installation at the output of each branches of the power flow of the reverse bevel gear in the onboard gear drive.

The achievement of the technical result is ensured by the fact that the transmission with two parallel output shafts contains a multi-stage gearbox consisting of parallel shafts: the driven shaft, the main input and coaxial additional input on which four gears are fixed, gears with ring gears are freely installed on the shafts and hubs with shift clutches located on them, while two output shafts are installed in parallel, at the output of each a reverse gear is installed, inside of which a hub with a three-position shift clutch is fixed, bevel gears with ring gears are located near it, meshed with a gear mounted on the final drive drive shaft, inside the multi-stage gearbox there are six rows of gears, three gears in each row, between the first three rows on the gear rims of the gears, oppositely deployed clutches with common shift forks are installed, on each output shaft between the rows of gears two hubs with three-position shift clutches are fixed.

In FIG. 1 shows a kinematic diagram of a multi-stage transmission with two parallel output shafts, which combines the functions of the MCP and MP (rotation mechanism). In the lower part, rows are indicated, each with three interlocking cylindrical gears: a, b, c, d, e, f.

In FIG. 2 shows a structural beam diagram of this manual gearbox with tables of shift clutch positions in various gears. In the lower part of the table, above the gear numbers (1-16), the pairs of gears included in the work are indicated (c, abc, b, a, etc.). On the horizontal scales in logarithmic form, the gear ratios of pairs of gears and gears are given. On the lower horizontal, the lower scale is uniform in logarithmic form, the upper scale is uneven - in natural form. The upper horizontal corresponds to the gear ratios on the output shaft, the lower horizontal - on the input shaft. Point O on the lower horizontal is the input of torque into the manual gearbox from the engine. Designations of pairs of gears are indicated on the beams. The greater the tilt of the beam to the right, the greater the gear ratio. The left tilt of the beam indicates the accelerating mode of the pair of gears. The slope of the beam of each pair of gears is constant in any part of the beam diagram. The reverse bevel gear is not shown in the diagram.

In FIG. 3 shows another version of the structural beam diagram for a transmission with other gear ratios of gear pairs. The gear ratios of the last two pairs of gears "e" and "f" are close together.

In the supports of the housing 1 of a multi-stage transmission with two parallel output shafts (Fig. 1) there are shafts: 2 - main input shaft; 3 - additional input shaft; 4 - output shaft of the starboard side of the GM; 5 - output shaft of the left side of the GM; 6 - drive shaft of the right side gear drive; 7 - drive shaft of the left final drive. Shaft outputs 3, 4 and 5 can be used as a PTO (power take-off shaft). On the main input shaft 2, a spur gear 8 with a ring gear is fixed, and a gear 9 with ring gears is freely installed. Cylindrical gears 10, 11, 12 and 13 with toothed rims are fixed on the additional input shaft 3. On the right output shaft 4, gears 14-19 with ring gears are freely installed, geared respectively with gears 8-13 on the input shafts 2 and 3. On the left output shaft 5, gears 20-25 with ring gears are freely installed, also engaged, respectively, with gears 8 -13 on the input shafts 2 and 3. Between the rows of gears "a" (14-8-20) and "b" (15-9-21) clutches A (26-27-28) are installed, located on the gear rims of the gears, with shift forks 29 and 30. Between the rows of gears "b" (15-9-21) and "c" (16-10-22) clutches B (31-32-33) are installed, located on the gear rims of the gears, with forks switching 34 and 35. On the hubs 36 and 37, mounted on the output shafts 4 and 5 between the gears 16-17 and 22-23, there are three-position switching clutches C (38 and 39). On the hubs 40 and 41, mounted on the output shafts 4 and 5 between the gears 18-19 and 24-25, there are three-position switching clutches D (42 and 43). On the drive shaft 6 of the drive of the right final drive, a bevel gear 44 is fixed, which is engaged with gears 45 and 46 freely mounted on the output shaft 4. Between gears 45 and 46 with ring gears, a hub 47 with a reverse clutch 48 R is fixed. Similarly, on the drive shaft 7 of the drive on the left final drive, a bevel gear 49 is fixed, which is engaged with gears 50 and 51 freely mounted on the output shaft 5. Between gears 50 and 51 with ring gears, a hub 52 with a reverse clutch 53 R is fixed.

Reverse gearboxes with bevel gears 44-46 and 49-51 with shift clutches R (48 and 53) with hubs 47 and 52 can be made separately and connected to the output shafts 4 and 5 of the MCP, divided into two parts by cardan gears.

The operation of a multi-stage transmission is carried out as follows.

1st gear

Clutches A, B and D are in the right position R (see the right side of the table in Fig. 2), clutch C is in the neutral N, off position. The work includes rows of gears "acf". In the ray diagram of Fig. 2 from point 0, a steep beam "a" goes up to the left in an accelerating mode to point 13, then beam "c" to the right down and a gentle beam "f" to the right up to point 1.

The torque from the engine is supplied (see Fig. 1) through the main input shaft 2 to the gear 8, from it to the gears 14 and 20, freely located on the output shafts 4 and 5, from them through the gear rims and couplings A to the row of gears " b" and further along clutches B to the row of gears "c": from gear 14 along clutch 26 to gear 15, then clutch 31 to gear 16; from gear 20 along clutch 28 to gear 21, then clutch 33 to gear 22; from gears 16 and 22 to the middle gear 10 and additional input shaft 3. Clutches 27 "A" and 34 "B" are turned off. Along the additional input shaft 3 to the gear 13, from it to the gears 19 and 25, by couplings "D" 42 and 43 to the hubs 40 and 41 of the output shafts 4 and 5 (in Fig. 1, the clutch 43 in the rotation mode to the gear 24). Through output shafts 4 and 5, forces are transmitted to hubs 47 and 52, from them by couplings 48 and 53 "R" along the ring gears to bevel gears 45 or 46 and 50 or 51 to gears 44 and 49, then to the drive shaft 6 of the right side drive gearbox and on the drive shaft 7 of the drive of the left final drive.

In forward gears, clutch 48 is in the left position, and clutch 53 is in the right position, gears 45 and 51 are engaged, in reverse gears, clutch 48 is in the right position, and clutch 53 is in the left position, gears 46 and 50 are engaged (see Fig. 1).

2nd gear

We switch clutches A to the left "L" position. Replaced the row of gears "a" with a row of gears "b". Rows of gears "bcf" are in operation. In the ray diagram of Fig. 2 from point 0 beam “b” goes up to the left in an accelerating mode to point 14, then beam “c” goes down to the right and a gentle beam “f” to the right up to point 2.

The torque from the engine is supplied through the main input shaft 2 to the gear 9, from it to the gears 15 and 21, freely located on the output shafts 4 and 5, from them through the ring gears and couplings B to the row of gears "c", then as 1 th transfer.

3rd gear

We return clutches A to the right position, switch clutches B to the left "L" position. Replaced the row of gears "c" with a row of gears "a". Rows of gears "abf" are in operation. In the ray diagram of Fig. 2 from point 0 beam "a" goes up to the left in an accelerating mode to point 13, then a steep beam "b" to the right down and a gentle beam "f" to the right up to point 3.

The torque from the engine is supplied through the main input shaft 2 to the gear 8, from it to the gears 14 and 20, freely located on the output shafts 4 and 5, from them through the gear rims and couplings A to the row of gears "b": from gear 14 to clutch 26 to gear 15, from gear 20 via clutch 28 to gear 21, from gears 15 and 21 to middle gear 9, via clutch 32 to gear 10 and additional input shaft 3, then both in 1st and 2nd gears.

4th gear

Clutches A and B are in the left position L, clutch C is in the neutral N, off position and clutch D is in the right position R. Gear set "f" is engaged. In the ray diagram of Fig. 2 from point 0 a gentle beam “f” goes up to the right to point 4.

The torque from the engine is supplied through the main input shaft 2 to gear 8, from gear 8 through clutch 27 to gear 9, then by clutch 32 to gear 10 and additional input shaft 3. Through additional input shaft 3 to gear 13, from it to gear 19 and 25, by couplings "D" 42 and 43 on the hubs 40 and 41 of the output shafts 4 and 5.

5th gear

Clutches A and B are in the right position R, clutch C is in the neutral N, off position and clutch D is in the left position. The work includes rows of gears "ace". Compared to 1st gear, the “f” gear row was replaced with the “e” gear row. In the ray diagram of Fig. 2 from point 0, a steep beam "a" goes up to the left in an accelerating mode to point 13, then beam "c" to the right down and beam "e" to the right up to point 5.

The torque from the engine is supplied through the main input shaft 2 to the gear 8, from it to the gears 14 and 20, freely located on the output shafts 4 and 5, from them through the gear rims and couplings A to the row of gears "b" and then to the row of gears "c": from gear 14 along clutch 26 to gear 15, then clutch 31 to gear 16; from gear 20 along clutch 28 to gear 21, then clutch 33 to gear 22; from gears 16 and 22 to the middle gear 10 and additional input shaft 3. Clutches 27 "A" and 34 "B" are turned off. Along the additional input shaft 3 to gear 12, from it to gears 18 and 24, by couplings "D" 42 and 43 to hubs 40 and 41 of output shafts 4 and 5.

6th gear

Compared to 5th gear, we switch clutches A to the left "L" position. Replaced the row of gears "a" with a row of gears "b". Rows of gears "bce" are in operation. In the ray diagram of Fig. 2 from point 0 beam “b” goes up to the left in an accelerating mode to point 14, then beam “c” to the right down and beam “e” to the right up to point 6.

The torque from the engine is supplied through the main input shaft 2 to the gear 9, from it to the gears 15 and 21, freely located on the output shafts 4 and 5, from them through the gear rims and couplings B to the row of gears "c", then as to 5 th transfer.

7th gear

We return clutches A to the right position, switch clutches B to the left "L" position. Replaced the row of gears "c" with a row of gears "a". Rows of gears "abe" are in operation. In the ray diagram of Fig. 2 from point 0 beam "a" goes up to the left in an accelerating mode to point 13, then a steep beam "b" to the right down and beam "e" to the right up to point 7.

The torque from the engine is supplied through the main input shaft 2 to the gear 8, from it to the gears 14 and 20, freely located on the output shafts 4 and 5, from them through the gear rims and couplings A to the row of gears "b": from gear 14 to clutch 26 to gear 15, from gear 20 via clutch 28 to gear 21, from gears 15 and 21 to middle gear 9, via clutch 32 to gear 10 and additional input shaft 3, then both in 5th and 6th gears.

8th gear

Clutches A, B and D are in the left position L, clutch C is in the neutral N, off position. A number of gears "e" are included in the work. In the ray diagram of Fig. 2 from point 0, the beam "e" goes up to the right to point 8.

The torque from the engine is supplied through the main input shaft 2 to gear 8, from gear 8 through clutch 27 to gear 9, then by clutch 32 to gear 10 and additional input shaft 3. Through additional input shaft 3 to gear 12, from it to gear 18 and 24, by couplings "D" 42 and 43 on the hubs 40 and 41 of the output shafts 4 and 5.

9th gear

Clutches A, B and C are in the right position R, clutch D is in the neutral N, off position. The work includes rows of gears "acd". Compared to the 5th gear, the “e” gear row was replaced with the “d” gear row. In the ray diagram of Fig. 2 from point 0, a steep beam “a” goes up to the left in an accelerating mode to point 13, then a beam “c” goes down to the right and a steep beam “d” goes up to the left in an accelerating mode to point 9.

The torque from the engine is supplied through the main input shaft 2 to the gear 8, from it to the gears 14 and 20, freely located on the output shafts 4 and 5, from them through the gear rims and couplings A to the row of gears "b" and then to the row of gears "c": from gear 14 along clutch 26 to gear 15, then clutch 31 to gear 16; from gear 20 along clutch 28 to gear 21, then clutch 33 to gear 22; from gears 16 and 22 to the middle gear 10 and additional input shaft 3. Clutches 27 "A" and 34 "B" are turned off. Along the additional input shaft 3 to gear 11, from it to gears 17 and 23, by couplings "C" 38 and 39 to hubs 36 and 37 of output shafts 4 and 5.

10th gear

Compared to 9th gear, we switch clutches A to the left "L" position. Replaced the row of gears "a" with a row of gears "b". Rows of gears "bcd" are in operation. In the ray diagram of Fig. 2 from point 0, beam “b” goes up to the left in an accelerating mode to point 14, then beam “c” goes down to the right and beam “d” goes up to the left in an accelerating mode to point 10.

The torque from the engine is supplied through the main input shaft 2 to the gear 9, from it to the gears 15 and 21, freely located on the output shafts 4 and 5, from them through the gear rims and clutches B to the row of gears "c", then as to 9 th transfer.

11th gear

We return clutches A to the right position, switch clutches B to the left "L" position. Replaced the row of gears "c" with a row of gears "a". The rows of gears "abd" are in operation. In the ray diagram of Fig. 2 from point 0 beam “a” goes up to the left in an accelerating mode to point 13, then a steep beam “b” goes down to the right and beam “d” goes up to the left in an accelerating mode to point 11.

The torque from the engine is supplied through the main input shaft 2 to the gear 8, from it to the gears 14 and 20, freely located on the output shafts 4 and 5, from them through the gear rims and couplings A to the row of gears "b": from gear 14 to clutch 26 to gear 15, from gear 20 via clutch 28 to gear 21, from gears 15 and 21 to middle gear 9, via clutch 32 to gear 10 and additional input shaft 3, then both in 9th and 10th gears.

12th gear

Clutches A and B are in the left position L, clutch C is in the right position and clutch D is in the neutral N, off position. A number of gears "d" is included in the work. On the beam diagram of figure 2 from point 0, the beam "d" goes up to the left in the accelerating mode to point 12.

The torque from the engine is supplied through the main input shaft 2 to gear 8, from gear 8 through clutch 27 to gear 9, then by clutch 32 to gear 10 and additional input shaft 3. Through additional input shaft 3 to gear 11, then as in previous gears .

13th gear

Clutches A and B are in the right position R, clutch C is in the left position, clutch D is in the neutral N, off position. A number of gears "a" is included in the work. Compared to the 12th gear, the “d” gear row was replaced with the “a” gear row. On the ray diagram of figure 2, a steep beam "a" comes out of t. 0 to the left upwards in the accelerating mode to t. 13.

The torque from the engine is supplied through the main input shaft 2 to the gear 8, from it to the gears 14 and 20, freely located on the output shafts 4 and 5, from them through the gear rims and couplings A to the row of gears "b" and then to the row of gears "c": from the gear 14 along the clutch 26 to the gear 15, then the clutch 31 to the gear 16, from it the clutch 38 to the hub 36 of the output shaft 4; from gear 20 along clutch 28 to gear 21, then clutch 33 to gear 22, clutch 39 to hub 37 of output shaft 5.

14th gear

Compared to 13th gear, we switch clutches A to the left "L" position. Replaced the row of gears "a" with a row of gears "b". The row of gears "b" is in operation. On the ray diagram of figure 2 from point 0, the beam "b" goes up to the left in the accelerating mode to point 14.

The torque from the engine is supplied through the main input shaft 2 and gear 8, through the gear rims and the clutch 27 to the gear 9, from it to the gears 15 and 21, freely located on the output shafts 4 and 5, from them through the gear rims and clutches B to a row of gears "c", then as in 13th gear.

15th gear

Return clutch A to the right position. The rows of gears "abc" are in operation. On the ray diagram of Fig.2 from point 0, the beam "a" goes up to the left in accelerating mode to point 13, then the steep beam "b" to the right down and the gentle beam "c" to the left upwards in accelerating mode to point 15.

The torque from the engine is supplied through the main input shaft 2 to the gear 8, from it to the gears 14 and 20, freely located on the output shafts 4 and 5, from them through the gear rims and couplings A and B to the rows of gears "b" and "c ": from gear 14 along clutch 26 to gear 15, from gear 20 via clutch 28 to gear 21, from gears 15 and 21 to middle gear 9, via clutch 32 to gear 10, from it to gears 16 and 22, clutches "C » 38 and 39 on hubs 36 and 37 of output shafts 4 and 5.

16th gear

Clutches A, B and C are in the left position L, clutch D is in the neutral N, off position. A number of gears "c" are included in the work. In the ray diagram of Fig. 2 from point 0 a gentle beam "c" goes up to the left in an accelerating mode to point 16.

The torque from the engine is supplied through the main input shaft 2 to gear 8, from gear 8 through clutch 27 to gear 9, then by clutch 32 to gear 10, then as in the previous gear.

To assess the effectiveness of the design, the following relative indicators can be applied. The coefficient of intensity of the gears, equal to the ratio of the number of forward gears to the number of gears used, is equal to Ka=16/18=0.89. The reduction ratio, equal to the ratio of the number of forward gears to the total reduction, was Кb=16/20=0.8. The layout efficiency coefficient is equal to the sum of two coefficients Kc=0.89+0.8=1.69. These are good indicators.

где q - интервал, (шаг) между соседними передачами.The total reduction, equal to the sum of the segments of the projections of rays onto the horizontal axis, was

where q is the interval, (step) between adjacent transmissions.

В этом случае, интервал составит:

Для расчетов примем q=1.2.As a rule, the maximum gear ratio in a pair of gears is limited to U=4;

In this case, the interval will be:

For calculations we will accept q=1.2.

With the kinematic scheme shown in Fig. 1 and from the ray diagram in FIG. 2 received the following gear ratios of pairs of gears and gears.

в ускоряющем режиме

in accelerated mode

в ускоряющем режиме

в ускоряющем режиме

in accelerated mode

in accelerated mode

in accelerated mode

Gear ratios:

The range of the manual transmission, equal to the ratio of the gear ratios of the lowest gear to the highest,

The operation of the MCP in the MP mode (rotation mechanism).

The MCP implements two gear arrangement methods: 1) the method of free installation of gears on shafts and 2) the traditional method.

1. The method of free installation of gears on shafts intensifies the work of gears - each gear can operate in several gears. Each pair of gears after the first two pairs doubles the number of gears. Three pairs of gears provide four gears, four pairs of gears - eight gears, etc. In the proposed MCP design, three pairs of gears "a", "b" and "c" implement four gears: 12-16. For example, in 15th gear, all three pairs of gears work. Pairs of gears "in" and "c" can work in both directions. For example, a pair of gears "c" is in overdrive in 14th gear and in retard in 15th gear. But shift clutches A and B are interconnected - parallel output shafts 4 and 5 rotate at the same angular speeds.

2. With the traditional method of coupling layout, C (38-39) and D (42-43) are independent. On the output shafts 4 and 5, you can turn on different pairs of gears with different gear ratios.

а на левый - U_5g=3,27.For example, in FIG. 1 clutch D in different positions: clutch 42 included a pair of gears 13-19, and clutch 43 - a pair of gears 12-24. In this state, one of the variants of the GM rotation is realized. The gear ratio to the right bevel gear is

and on the left - U _5g \u003d 3.27.

The ratio of gear ratios to the right and left sides is 6.78 / 3.27 \u003d q ⁴ \u003d 1.2 ⁴ \u003d 2.07. We get a sharp turn - the speed of the left caterpillar is more than twice the speed of the right caterpillar.

Отношение передаточных чисел на правый и левый борт 6,78/1,577=q^s=1,2⁸=4,3. Это очень крутой поворот.If the left gearbox is turned on through a pair of gears 11-23, then we get

The ratio of gear ratios to the right and left sides is 6.78/1.577=q ^s =1.2 ⁸ =4.3. This is a very sharp turn.

GM turning radii can be changed with other MCP parameters. For example, in FIG. 3 shows a beam diagram, where the gear ratios of pairs of gears located at the output of the MCP are close to 0.5 q instead of 4 q in FIG. 2.

The total reduction, equal to the sum of the segments of the projections of rays on the horizontal axis, was P=0.5q+1.5q+3.5q+0.5q+4.0q+4.5q=14.5q; where q is the interval, (step) between adjacent transmissions. Rb=16/14.5=1.1.

Let's take the MCP range - D*=16, close to the range in Fig. 2.

Для расчетов примем q=1,29.

For calculations, we take q = 1.29.

in accelerated mode

in accelerated mode

in accelerated mode

in accelerated mode

Gear ratios:

The range of the manual transmission, equal to the ratio of the gear ratios of the lowest gear to the highest,

а на левый -

то отношение передаточных чисел на правый и левый борт 6,75/5,94=q^0,5=1,29^0,5=1,136. Получили плавный поворот. Такие же плавные повороты получим при

Отношения передаточных чисел сохранились - 3,145/2,77=1,135.If the gear ratio to the right bevel gear is

and on the left -

then the ratio of gear ratios to the right and left sides is 6.75 / 5.94 = q ^0.5 = 1.29 ^0.5 = 1.136. Got a smooth turn. The same smooth turns will be obtained with

The gear ratio ratios are preserved - 3.145 / 2.77 = 1.135.

Отношение передаточных чисел на правый и левый борт 6,75/2,438=q⁴=1,29⁴=2,77. Радиус поворота существенно снизился.If the left gearbox is turned on through a pair of gears 11-23, then we get

The ratio of gear ratios to the right and left sides is 6.75 / 2.438 \u003d q ⁴ \u003d 1.29 ⁴ \u003d 2.77. The turning radius has been significantly reduced.

Turning speeds can be changed not only by switching the manual gearbox clutches, but also by switching the reverse clutches of bevel gears.

The turn of the GM (tracked vehicle) in almost one place can be ensured by turning on the bevel gears of the reverse in different directions. Such a turn is necessary for GM-type self-propelled guns (self-propelled artillery mounts), which are not equipped with rotary turrets.

Range of 16-speed transmission D*=6.75/0.41=q ¹¹ =1.29 ¹¹ =16.46. This value will ensure the successful operation of the NTS in a wide range of operating conditions with convenient gear shifting - q = 1.29. Received a compact transmission of low metal consumption. It has 6 gears with high efficiency with single-pair gearing, 10 gears with three-pair gearing, which implements a low gear ratio in the fifth and sixth pairs of gears Ue=2.77 and Uf=3.145.

Designations:

1 - housing of a multi-stage transmission with two parallel output shafts;

2 - main input shaft,

3 - additional input shaft,

4 - output shaft of the starboard side of the GM;

5 - output shaft of the left side of the GM;

6 - drive shaft of the right side gear drive;

7 - drive shaft of the left final drive.

8 - cylindrical gear with a ring gear, mounted on the main input shaft 2;

9 - cylindrical gear with a ring gear, freely mounted on the main input shaft 2;

10, 11, 12 and 13 - spur gears with ring gears mounted on an additional input shaft 3;

14-19 - spur gears with gear rims, freely installed on the right output shaft 4, engaged respectively with gears 8 - 13 on the input shafts 2 and 3;

20-25 - spur gears with gear rims, freely installed on the left output shaft 5, engaged, respectively, with gears 8 - 13 on the input shafts 2 and 3;

A (26-27-28) - shift clutches located on the gear rims between the rows of gears "a" (14-8-20) and "b" (15-9-21);

29 and 30 - shifting forks 26-27-28;

B (31-32-33) - shift clutches located on the gear rims between the rows of gears "b" (15-9-21) and "c" (16-10-22); 34 and 35 - shifting forks 31-32-33;

36 and 37 - hubs mounted on output shafts 4 and 5 between gears 16-17 and 22-23;

С (38 and 39) - three-position switching clutches located on the hubs 36 and 37;

40 and 41 - hubs mounted on output shafts 4 and 5 between gears 18-19 and 24-25;

D (42 and 43) - three-position shift clutches located on hubs 40 and 41;

44 - bevel gear, which is mounted on the drive shaft 6 of the drive of the right final drive;

45 and 46 - gears with ring gears freely mounted on the output shaft 4 and meshed with the bevel gear 44;

47 - hub mounted on the output shaft 4 between the gears 45 and 46;

48 R - reverse clutch on hub 47;

49 - bevel gear, which is mounted on the drive shaft 7 of the drive of the left final drive;

50 and 51 - gears with ring gears freely mounted on the output shaft 5 and meshed with the bevel gear 49;

52 - hub mounted on the output shaft 5 between the gears 50 and 51;

53 R - reverse clutch on hub 52.

Claims (1)

Transmission with two parallel output shafts, containing a multi-stage gearbox consisting of parallel shafts: a driven shaft, a main input shaft and a coaxial additional input shaft, on which four gears are fixed, gears with ring gears are freely installed on the shafts and hubs with shift clutches located on them are fixed , characterized in that two output shafts are installed in parallel, a reverse gear is installed at the output of each, inside of which a hub with a three-position shift clutch is fixed, bevel gears with ring gears are located near it, meshed with a gear mounted on the final drive drive shaft, inside a multi-stage box gears there are six rows of gears, three gears in each row, between the first three rows on the gear rims of the gears, oppositely deployed clutches with common shift forks are installed, on each output shaft between the rows of gears two hubs with three-position shift clutches are fixed.

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