RU2149767C1 - Gearbox - Google Patents

Abstract

FIELD: transport engineering. SUBSTANCE: all gears on shafts of two-shaft six-speed gearbox are fitted to slide. Four gears of input shaft, one of which is reverse gear, are assembled into cluster. One sleeve is installed on input shaft and two sleeves, on output shaft. EFFECT: decreased metal usage, simplified design. 3 dwg

Description

 The invention relates to transport engineering, to the transmission of transport vehicles.

Known transmission units with a step change of gear ratios, containing gears, shafts, bearings, gear shifting devices used on domestic and foreign cars (1. Cars: Design, construction and calculation. Transmission. Edited by AI Grishkevich. - Mn .: High school, 1982, - 240 p.)
These units are structurally complex and metal-intensive.

 Closest to the proposed gearbox (KP) is a two-shaft six-speed KP according to the copyright certificate N 1113287.

 The gearbox comprises a housing with input and output shafts parallel to it, four pairs of interlocked gears and three reverse gears, the two gears of the output shaft being combined into a block.

 The gearbox is too complicated and metal-consuming: six clutches are installed for gear shifting, and two input shafts with their clutches are used to drive the unit.

 The objective of the invention is to reduce the metal consumption and the complexity of the design of the gearbox.

 The technical result is achieved by the fact that all the gears on the shafts are mounted freely, four gears of the input shaft, one of which is reverse, are combined into a block, one clutch is installed on the input shaft between the gear block and a separate gear, two couplings are installed on the output shaft, one between a block of gears and a separate gear, the second between separate gears, one of which is reverse gear.

 In FIG. 1 shows a diagram of a two-shaft six-speed gearbox.

 In FIG. 2 shows a fragment of the gearbox diagram - the input shaft in another design.

 In FIG. 3 shows a beam diagram of the gearbox, below it is a table of the positions of the clutches in various gears.

 In the bearings of the gearbox housing 1 are the input (primary) shaft 2 and the output (secondary) shaft 3. On the primary shaft 2, gears 4, 5, 6, 7 and 8 are installed, with the last four gears combined in block 9. On the secondary shaft 3 gears 10 and 11 are installed, combined into a block, gears 12, 13 and 14 are also included. The reverse gear 15 is located between gears 8 and 14. Clutch 16 (A) is located on the input shaft between gear 4 and block 9. Clutch 17 (B ) is located on the secondary shaft between gears 11 and 12, and the coupling 18 (C) is between gears 13 and 14.

 The gearbox is as follows.

First gear
Clutches A and C are in the left position, and clutch B is in the neutral position (see table under Fig. 3).

 The torque from the input shaft 2 through the coupling A in the left position is supplied to a pair of gears 4 - 10, then through the block to a pair of gears 11 - 5, through the block 9 to a pair of gears 7 - 13, through the coupling C in the left position to the secondary shaft 3 .

 On the beam diagram (see Fig. 3), this transmission is represented by three interconnected rays emerging from vol. 0 on the horizontal horizontal. Beam 4 - 10 is directed right down to t. 3, then beam 11 - 5 is right up and beam 7 - 13 is right down to t. 1. The better the beam, the greater the gear ratio of a pair of gears. The tilt of the beam to the right indicates a deceleration, the tilt of the beam to the left indicates an acceleration. The radiation diagram shows that the maximum gear ratio is provided by a pair of gears 4–10, the lower gear ratio in a pair of 7–13 and the minimum in a pair of 6–12.

Second gear
Clutch B is switched to the right position, and clutch C is in neutral. A pair of gears 7 - 13 is turned off from work, instead of it, a pair of 6 - 12 is turned on.

Third gear
Clutch B is switched to the left position. From three-pair gearing, we turn to single-pair. The torque is transmitted by a pair of gears 4 - 10, then through the gear block to the clutch B in the left position and to the secondary shaft. On the beam diagram, this transmission is represented by a beam of 4-10 to t. 3.

Fourth gear
We switch clutch A to the right position, B to neutral and C to left. The torque from the input shaft 2 through the coupling A in the right position is supplied to block 9, a pair of gears 7 - 13 and the coupling C in the left position to the secondary shaft 3.

Fifth gear
Switch clutch B to the right position and clutch C to neutral. Torque is transmitted from the input shaft by a pair of gears 6 - 10 and clutch C in the left position.

Sixth gear
Clutch B is switched to the left position. Torque is transmitted by a pair of gears 5 - 11 and clutch B in the left position. Unlike the first and second gears, this pair of gears works in a different direction, earlier it transmitted torque from the block on the secondary shaft to the gear block of the primary shaft in the decelerating mode, in sixth gear this pair of gears works in the accelerating mode - from the primary shaft to the secondary . On the beam diagram, this transmission is represented by a ray of 5 - 11 from t. 0 to t. 6.

First reverse
Clutch A in the left position, B in the neutral position, C in the right position. In contrast to the first gear, instead of a pair of gears 7 - 13, a number of reverse gears 8-15-14 are included.

Second reverse
Clutch A in the right position. Torque is transmitted only by a series of gears 8-15-14.

 A positive effect is expressed in that the metal consumption and design complexity of the gearbox are reduced by eliminating the second tubular input shaft with its clutch, as well as using only three gearshift clutches instead of six for the prototype.

Claims (1)

 A gearbox comprising a housing with input and output shafts parallel to it, four pairs of interlocked gears and three reverse gears, the two gears of the output shaft being combined into a block, a gearshift clutch, characterized in that all gears are mounted freely on the shafts, four gears of the input shaft, one of which is the reverse gear, is combined into a block, one clutch is installed on the input shaft between the gear block and a separate gear, two couplings are installed on the output shaft, one between the gear block and tdelnoy gear, the second - between different gears, one reverse gear.

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