SU1452717A1 - Vehicle gear-box reverse mechanism - Google Patents

Abstract

The invention relates to mechanical engineering, in particular to reversing mechanisms, and can be used in vehicle transmissions. The purpose of the invention is to increase reliability. The reverse gear of the vehicle gearbox contains: three gears located outside the gearbox housing; f7 ZOZUv 8 Л П and W2 J9K3J2e lae) A // / L - // 7С / Л 7 311 25 ЗУ 133015 31 П leading 26, intermediate 27 and driven 28, the first of which is fixed on the rear console end of the intermediate shaft 4 of the gearbox The second axially movable element 25 of the transmission control device 25 is mounted for free rotation on the pin 30 fixed from rotation, and a third is fixed on the driven shaft 3 of the front box, with the pin of the intermediate gear Q movably in the axial direction and partially placed inside cards The gearbox gearbox 1, the intermediate gear, is fixed against axial movement relative to the end of the finger, which cantileverly protrudes from the gearbox housing, and the mobile element of the control device is connected to the finger section located inside the gearbox housing, 1 sludge. i (L 4 sd y 27

Description

The invention relates to the transport of machinery and can be used in transmissions of ground vehicles.

The purpose of the invention is to increase reliability. -

The drawing shows a diagram of the gearbox with the proposed mechanism | reverse -

The gearbox contains a crankcase 1, in which a second shaft 2 is installed, a driven shaft 3 coaxial with it and an intermediate shaft parallel thereto. Gears 5-16 and clutches 17-19 are located inside the case, which ensure the engagement of the forward gear gear. The pinions 5 and 6 of the permanent engagement are fixed respectively on the drive and intermediate shafts and provide for the drive of the intermediate shaft from the drive shaft. Gears 7, 9, t1, 13 and 15 are mounted on the intermediate shaft 4. Gears 8, 10, 12, 14 and 16 are rotatably mounted on the driven shaft 3. Couplings 17-19 are mounted on the driven shaft 3 for alternately connecting to it drive shaft 2 with the inclusion of direct transmission and gears .8, 10, 12, 14 and 16 with the inclusion of the front gear. The crankcase 1 is fitted with a control device case 20, in which a spherical control lever 22 is mounted on the ball joint 21, which interacts with the rods, on which the coupling movement pins are fixed (in the drawing there is one rod 23 and one fork 24, and the remaining stocks are located outside the drawing cavity). In addition, the control device has a movable element 25 for switching on and off the reverse, located inside the crankcase 1 and moved by the lever 22 through a transmission mechanism (not shown).

The gearbox reversing mechanism contains three gearboxes 1 located outside the gearbox 26-28, which are closed by a cap 29 connected to the crankcase 1. The reverse gear gear 26 is fixed to the rear cantilever end of the intermediate gear 4. The intermediate gear 27 is mounted for free rotation on finger 30 fixed against rotation. Gear 27 is fixed against axial movement relative to, -

but the end of the finger 30, cantilevered protruding from the crankcase 1, using bearings 31 and 32, which are mounted on the finger 30. The latter is located outside the plane drawn through the axes of the shafts 2-4, and in the drawing the conditional is shown in this plane. Driving gear 28 mounted on the driven shaft 3 with a gap relative to the gear 26. The finger 30 is mounted movably in the axial direction in two coaxial holes (not marked), made in the rear wall 33 of the crankcase 1 and in the bracket 34, made integral with the crankcase 1. Movable the control device element 25 is connected to a finger section 30 located inside the crankcase 1. Gear 27 is in constant engagement with gear 26. In one extreme position of the finger 30, gear 27 is disengaged from gear 28, and in the other extreme position (not seemed) engaged with the pinion 28.

Transmission works as follows.

When the clutches 17-19 are moved from the middle neutral position, six selected forward gears are activated, on which shafts 2 and 3 rotate in one direction. When this gear 27 is in the position shown in the drawing, and the reverse gear is off.

In order to engage the reverse movement, the pin 30 by the lever 22 through the movable element 25 moves forward from the position in which the gear 27 engages with the gear 28. In this case, the shaft 3 is rotated through gears 5, 6 and 26-28 in the direction opposite to the direction of rotation shaft 2.

Claims (1)

Invention Formula The reverse gear mechanism of the vehicle gearbox contains three gear case gears located outside the gearbox - driving, intermediate and driven, the first of which is fixed to the rear cantilever end of the gearbox intermediate shaft, the second one is moved in axial direction by the movable element of the control unit KO1452717 shorter gears, installed with the option of a gear housing, the free rotation on the pinion gear is fixed from the center fixed from rotation, and the axial movement relative to one third is fixed on the driven shaft of the finger, the console of the gearbox, which distinguishes the gear housing gears, and with the fact that, in order to increase the motion element of the control device, the finger in the intermediate neck is connected to the finger section, the shaft is mounted movably in the axially inside the crankcase obki redirecting and partially housed intra yuDach.