CS239375B1 - Planetary gearbox - Google Patents

Abstract

Planetary gear box with seven forward gears and four reverse gears, the gears are controlled by friction-shiftable elements, consisting of four brakes and three clutches. The planetary gear box consists of a basic gear box, which is connected in series with an additional gear box. The basic gear box consists of two planetary rows, three shiftable friction brakes and two shiftable friction clutches. The additional gear box consists of one planetary row, one shiftable friction brake and one shiftable friction clutch.

Description

239375

SUMMARY OF THE INVENTION The present invention is directed to a planetary gearbox with seven forward and reverse gear stages, the gear stages being arranged by friction shift elements consisting of four brakes and three clutches. The gearbox is designed for mobile work machines.

The present invention solves the problem of achieving a high torque range, with the finer grading of the gear ratios achieved at the individual gear stages.

The planetary gearboxes, designed for mobile workstations, can be created with a series of two stepped gearboxes, one of which acts as a basic gearbox with a gentle grading of gear ratios at individual gears and the other as an additional, so-called spreading gear. gearboxes with coarse graded gear ratios at individual gears. Up to now, a large number of such gearboxes are known, differing in the number and type of planetary series and their interconnection as well as the number and type of radiation elements, namely brakes and couplings.

The essence of the invention consists in the series connection of a basic gearbox with four forward and one speed gear with a two-stage gearbox, the connection of these gearboxes being realized by means of a satellite carrier of the second base stage gearbox. which is connected to the central wheel-so, m of the additional step-gear. The basic gearbox is made up of double planetary rows with two crown wheels, two central wheels, single satellites of the first, and a second-row basic gearbox series, two shifting friction clutches and three shifting friction brakes. the first planetary base gearbox is coupled to a satellite carrier of the second planetary gear stage, wherein the satellite carrier of the second planetary gear is coupled to the central gear of the auxiliary stage gearbox. The crown wheel of the second planetary series is coupled to a satellite carrier of the first planetary base stage gearbox and the internal portion of the first joystick of the base stage gearbox, the satellite carrier of the first planetary gear being coupled to the rotating portion of the second base friction brake of the base gearbox. gearboxes.

The central wheel of the first planetary gear of the base gearbox is coupled with the inner portion of the second gearshift clutch of the basic gearbox and the rotating portion of the first gearshift brake of the base gearbox. The central wheel of the second planetary base gearbox is coupled with the rotating portion of the third radial traction carriage of the base gearbox. The outer portions of the two base step gear friction couplings are coupled to the stepped gearbox input shaft. The additional stepper gear is formed by one releasable friction clutch, one radial friction clutch and a planetary row with one central wheel, one crown wheel and simple satellites mounted on a satellite carrier coupled to the output shaft step gear. . The crown wheel of the supplementary gear row is often connected to the rotary friction brake of the additional step gearbox and to the outside of the radial friction clutch.

SUMMARY OF THE INVENTION The present invention provides a high level of advantage in the toothing of the gears used, which at the same time permits the use of a uniform design of a plurality of components and construction nodes, such as satellite satellites, satellite bearings, radios and radios. metal and the like, thereby achieving a favorable economic effect especially in the area of production, servicing and the like.

Fig. 1 is a diagram of a planar step gear according to the invention;

The planetary gearbox of the present invention is comprised of three planetary rows 11, 21, 31, four shiftable friction brakes 36, 46, 56, 66 and three shifting timing couplings 16, 26, 76. -les, satellites stored on satellite carriers and crown wheels.

The planetary rows 11, 21, together with the respective shiftable friction brakes 36, 46, 56a, and the variable friction clutches 16, 26 form the base step gear A. The 31 row of planes together with the radial friction brake 66 and the shiftable friction the clutch 76 forms an additional step gear B.

The planetary gearbox input shaft 1 is connected to the outer portions 19, 29 of the basic stage gearbox friction clutches 16, 26. The central wheel 12 of the first planetary gearbox base stage is coupled to the inner portion 28 of the shifting friction clutch 26a with the rotating portion 35 of the radial friction brake 36 and centrally the wheel 22 of the second planetary gear stage 21 is coupled to the rotatable portion of the 55th friction brake 56.

The satellites 13 of the first planetary gear stage base are mounted on a satellite carrier 2, the satellite carrier 2 being connected to the rotary part 45, the radial friction brake 46, and to the corundum.

Claims (2)

Satellite carriers 3 are mounted on new wheels of the second planetary gear base stage gearbox / satin 23 of the second planetary gearbox base stage, and the satellite carrier 3 is connected to the crown wheel 14 of the first planetary gear stage base gearbox. and, on the other hand, by means of a connecting shaft 5 with a central wheel 32 of the planetary row 31 of the additional stage gearbox. The crown wheel 34 of the planetary gear stage of the additional gearbox is with rotary element 65 of the steerable friction brake 66 and with the outer portion 79 of the steerable friction clutch76. The inner part 78 of the radial friction clutch 76 is connected to the coupling shaft 5. The satellites 33 are mounted on a satellite carrier 4 which is connected to the output shaft 6 of the planetary gearbox. The forward stage of the planetary gearbox, in which the direction of rotation of the output shaft 6 is the same as the rotation of the planetary gearbox input shaft 1, is achieved: at the transmission gear by switching on the controllable friction clutches 16, 76 and the shifting thrust the brakes 36, on the second gear by engaging the friction clutches 16, 26, 76, on the third gear engaging the friction clutches 16, 76 and the adjustable friction brake 56, on the fourth gear by switching on the shift friction clutch 16 and the shiftable friction brakes 38,66, on the fifth gear stage of the engageable friction clutches 16, 76 and the radiating friction brake 66 on the sixth gear by engaging the shiftable friction clutch 16 and the shifting friction brakes 56, 66 and the seventh gear the reusable friction clutch 26 and the shifting thrust brakes 56, 66. The reverse of the planetary stage gearbox, where the sense of the rotation of the output shaft 6 of the planet gear stage is opposite to that of the rotating input shaft 1 of the planet gear stage is achieved at the first gear stage by switching on the shifting friction clutch 26 and the shifting friction brakes 46,66 and on the second gear stage the engaging friction clutches 26, 76 and the rotatable friction brake 66. The teeth of all crown wheels 1424, 34 are the same. The same is also the case for all satellites 13, 23, 33 of planetary gears 11, 21, 31 and also the gears of the central wheels 12, 22, 32 of the planet rows 11, 21, 31. The use of joyful friction elements, ie brakes and couplings allows the gear shifting to be carried out without interruption of the power output by the gearbox, and particularly suitable are the lamellar frictional friction elements switched on by means of a pressure medium, in particular oil. P R E D Μ E T 1. A planetary gear unit with seven forward gears and a gearing gear with a gears shifted by friction shifters, characterized in that it consists of a basic gearbox (even with slight grading) gear ratios at individual gears, coupled by interconnecting a satellite carrier (3) and a central gear (32) to an additional gearbox (B) such that the carrier (3) on which the second gear (23) is stored the planetary base gear unit series is connected by a central planetary gear wheel (32) through a shaft (5) which is simultaneously coupled to the inner portion (78) of the shifting shunt coupling (76), the gearbox is formed by a yard gear row (11, 21) consisting of co-run wheels (14, 24) first and a second planetary gearbox base stage, satellites (13, 23) of the first and second planetary gearbox base series, mounted on telecommunication carriers (2, 3), the satellite carrier (3) of the second planetary gear the base gearbox gear is coupled to the crown wheel (14) of the first planetary gear stage gearbox, and the carbon sinker (2) of the first planet gear of the base gearbox is connected to one of the crown gear (24) of the second gear train a basic step gear and with a rotatable portion (45) of the shifting friction brake (46) and, on the other hand, with an inner portion (18) of the shifting friction clutch (16), the central wheels (12, 22) of the first and second planetary stages a gearbox, wherein the central wheel (12) is connected, on the one hand, to a rotating part (35) of a shiftable friction brake (36) and one to the inner part (28) of the shiftable clutch (26) and ac the wheel (22) is connected to the rotary part (55) of the radial friction brake (56), and the additional step-gear (B) is formed by a thinner coupling (76) and one planetary row (31) consisting of a central wheel (32), the crown wheel, which is connected to the rotatable portion (65) of the shiftable friction brake (66) and to the outer portion (79) of the steerable friction clutch (76) and the carrier (4) on which the satellites (33) are stored, the carrier The satellites (4) are connected to 239375 7 with the output shaft (T) of the planetary gearbox. 2. Planetary step gear of sub-section 1, characterized in that the dimensions of the teeth of all crown wheels (14, 24, 34) are the same, the gears of all slats (13, 23, 33) are the same and the gears (11, 22, 32) are the same. 1 sheet of drawings