SU1388629A1 - Planetary gear box - Google Patents

Description

The invention relates to a transport engineering, in particular to transmissions of transport vehicles such as loaders having an equal number of forward and reverse gears.

The aim of the invention is to obtain an equal number of gears for the front and rear code with a minimum difference in the gear ratios of the respective gears in the forward and reverse gears and simplify box control by replacing the brake with the free wheeling mechanism and changing the interconnection of the box elements.

The drawing shows a kinematic diagram of a planetary gearbox.

The box includes a housing 1, an input 2 and an output 3 shafts, the first 4 and second 5 couplings, the first 6, the second 7 and the third 8 brakes and a free-wheeling mechanism 9. The box contains four planetary rows, each of which includes two central wheels, one with external, the second with internal teeth, and a carrier with single-pinion satellite. The first row consists of a central wheel 10 with external teeth, a central wheel 11 G with internal teeth of W and drove 12. The second series consists of a central wheel 13 with external teeth, a central wheel 14 with internal teeth and drove 15, the Third The series consists of a central wheel 16 with external teeth, a central wheel.

17 with internal teeth and drove 18. The fourth row consists of a central wheel 19 with external teeth, a central wheel 20 with internal teeth and a carrier 21.

The clutch 4 connects the input shaft 2 to the wheel 10 of the first row, the clutch 5 connects the output shaft 3 to the carrier

18 of the third row connected with the brake 8. The brake 6 is mounted on the wheel 10, the brake 7 on the wheel 14 connected to the wheel 16, the free-wheeling mechanism 9 is placed between the housing 1 and the planet carrier 12j connected to the carrier 15, Central wheels 11, 13 and 19 are connected to the input shaft 2. The carrier 21 is connected to the wheel 17.

The box works as follows.

To receive any transmission, two elements must be included.

control (brakes, clutches or freewheel), Transmission in order of increasing rotational speed

the output shaft is realized when the following pairs of control elements are turned on, namely; forward gears 5-9, 5-7, 5-6 and 5-4 and reverse gears 8-9, 8-7, 8-6 and 8-4.

For example, with values of internal gear ratios in planetary rows KT 2.08; , 2.08; Kg 2.64; K. 2.08 box provides the following gear ratios

on forward gears: And 4.93; R 2.17; Kj 1.35; And 1.0, and the values of gear ratios, sheniyami for reverse gears:, x -4.74; And, s, x -2.08; Izz x -1,3;

 -1.04.

The proposed box provides an equal number of forward and reverse gears with approximately the same gear ratios.

relations on the corresponding forward and reverse gears, simplifies management due to the automatic operation of the free-wheeling mechanism as an element of control

the box and, in addition, allows unifying elements (wheels, carrier and satellites) in the planetary series: first, second and fourth.

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Claims (1)

Invention Formula A planetary gearbox, comprising a housing, an input and output shafts, six control elements, of which two clutches and three brakes, a chain of planetary rows, each of which includes central wheels with outer and inner teeth respectively, and drove with identical satellite satellites, the central wheel with the outer teeth of the first row is connected to the first brake and connected by means of the first coupling to the input shaft, and the central wheel with the inner teeth of the second row and the carrier of the third row are connected respectively to the second second and third brakes, characterized in that, in order to obtain an equal number of forward and reverse gears with a minimum difference in the values of the gear ratios of the corresponding gears in the forward and reverse gears and to simplify the control of the gearbox; The sixth control element of the inner-second teeth of the second row is filled in the form of a mechanism freely connected to the central wheel of the movement established between the case of the third teeth of the third row, water and carrier of the first row, the last part of the third row by the second connected to the carrier of the second row, the swarm of the coupling and the central wheel with the central wheel with the internal teeth of the fourth row of the first row connected to the input shaft with the output shaft, and the drive shaft and the central wheels of the fourth row with One with the central outer teeth of the second and fourth Qnym wheel with internal teeth of the rows, the center wheel s.tretego row.