CS240312B1 - Serial planetary gearbox - Google Patents

Abstract

The serial planetary step gearbox with six forward gears and three reverse gears has gears arranged under the pull of frictional radial elements, consisting of 5 four brakes and two clutches. The serial planetary gearbox is formed by an additional gearbox, consisting of two planetary rows, two brakes and one clutch, and a basic gearbox, consisting of two planetary rows, two hfzd and one clutch.

Description

240312 3

SUMMARY OF THE INVENTION The present invention relates to a series planetary gear transmission with misalignment for forward stilts and with three-gear stages for low-speed operation, the gearshifts being arranged by friction shift elements consisting of four brakes and double clutches. The gearbox is designed to be used as a portable machine.

SUMMARY OF THE INVENTION The present invention solves the problem of achieving a high torque range by fine-tuning the gear ratios achieved at the individual gear stages and at achieving a very high mutual gear toothing of the used gear wheels. Serial planetary gear transmissions designed for mobile work machines are usually designed to be formed by joining two stage gears with a common member, with one of the stepped gears coming out of the function of the base gearbox and the other in the function! additional gearbox. Previously known gearboxes of this type differ from each other by the number and type of planetary rows, the number of gears realized, and the number and type of control elements, the refinement of the brakes and the clutches.

One of the criteria of convenience used by the concierge! The series gearboxes represent the range of coincidence of the gears of the individual planetary gear wheels. (J gearboxes of this type, manufactured for trucks and mobile machinery, high respectability of gearing at individual secondary schools is only achieved at crown wheels, partial or no coincidence of used gears is achieved at central wheels and satellites).

SUMMARY OF THE INVENTION The present invention is based on the provision of a serial pianet step transmission with four forward gear steps and three gear steps, consisting of four-row rows, four thrust friction brakes and two reversible friction clutches. , from simple satellites deposited on satellite carriers and from a crown wheel. The central wheels of the first and second planetary rows are connected to the input shaft of a series stage gearbox, which is also connected to the inside of the first shiftable friction clutch.

The central wheel of the third planetary gear is connected to the rotating portion of the third radiating friction brake and the central wheel of the fourth planetary gear is coupled to the rotary part of the fourth shift friction brake and the outer rotary portion of the second releasable clutch. The simple satellites of the first and second planetary rows are mounted on a common satellite carrier, the intrinsicities of the second planetary array being in engagement with the central planetary gear wheel and the outer satellites 4 of the second planetary array. The outer satellites of the second planet series are in the toothed gear with the second wheel of the second planet series and the outer satellite! second planetary series. The outer satellites of the second planetary array are in a gear-satellite with internal satellites and with the crown-wheel of the second planetary array. The carriers of the first and second planetary ropes are connected to the crown wheel fourth planet series and to the satellite carrier on which the simple satellites of the fourth planet series are mounted on a satellite carrier connected to the third planetary gear and the output shaft of the series. planetary gearbox. At the same time, the output shaft of the series gearbox is connected to the inner rotary part of the second radiator friction clutch. The rotary first shiftable friction brake is coupled to the co-wheel of the first planetary gear with the outer rotating portion of the first releasable friction clutch. The rotary part of the second radiant friction brake is coupled to the crown wheel.

The solution according to the invention achieves a uniform distribution of the gear ratios according to the geometrical series, which also makes it possible to utilize the power of the drive motor in all the gear stages of the serial pianet gearbox. A further object of the invention is to achieve complete consistency on all satellites. Conformity is also achieved on the central wheels of the first, third and fourth planetary minerals. This very high uniformity of the individual gears allows the use of uniformly creating a large number of components and constructive nodes, for example satin pins, bearings, satellites, radiation elements, etc., thereby achieving a positive economic effect especially in the area production, servicing and so on.

FIG. 1 shows a schematic stepped pianet transmission according to the invention. The series planetary gearboxes according to the invention are formed by four planetary rows 21, 31, 41, 51, four controllable friction brakes 26, 36, 46, 56 and two dilutable friction clutches 11, 66. satellites stored on satellite carriers and crown wheels.

The planet rows 21, 31 together with the respective controllable friction brakes 26, 36 and the controllable friction clutch 11 form an additional step gear A. The planetary rows 41, 51 together with the respective shifting friction brakes 46, 56 and the shifting friction clutch 66 form a stepped base gearbox B.

The central wheels 22, 32 of the first and second plates 21, 31 are connected to the input shaft 1 of the series stage gear. The central wheel 42 of the third planetary row 41 is associated with a rotary portion

Claims (2)

240312 of the radial friction brake 48 and the central wheel 52 of the planetary planet 51 is connected to the rotary portion of the radial friction brake 58 and to the outer portion 69 of the friction clutch 86. The satellites 23 of the first planet series 21, the inner satellites33 and the outer satellites 34 of the second planetary row 31 are stored on a common. satellites 2. The satellites 43 of the third planetary row 41 are mounted on the carrier 3, the carrier 3 being connected to the carrier 2 and the crown wheel 53 of the fourth planetary row 51. The satellites 53 of the fourth planetary row 51 are mounted on the carrier 4, the carrier 4 being connected to the crown wheel 45 of the third-row row 41 and the output shaft 5 of the serial-stage gearbox. The crown wheel 25 of the first planetary row 21 is connected to the outer portion 19 of the radial clutch 11 and to the rotatable portion of the shifting friction brake 26. The crown wheel 35 of the second planetary row 31 is coupled to the rotating portion of the radial friction brake 38. Internal the radial clutch portion 18 is coupled to the input shaft 1 of the series gearbox, and the inner portion 68 of the radial clutch 66 is coupled to the output shaft 5 of the serial gearbox. The forward run of the serial stage gear, in which the sense of rotation of the output shaft 5 is the same as the rotation of the input shaft 1 of the series gearbox, is achieved with the first third gear step engaging the reusable friction brake 26, while braking the crown gear 25 on the first to the first row 21 and on the fourth to sixth gear by switching on the radial clutch 11, connecting the inlet risers 1 of the series gearbox with the crown wheel 25 of the first planetary gear 21. Reverse operation of the serial stage gear, in which the sense of rotation output The output shaft 1 of the series stage gearbox is opposite to the sense of rotation of the input shaft 1 of the serial stage gearbox, which is achieved by switching on the inertia brake 38 while braking the crown wheel S5 of the second planetary row 31. First and fourth gear steps forward and the first gear the reverse gear is achieved by switching on the antistatic brake SK, the second and the trailing forward gear stage, and the second reverse gear stage is reached by turning the friction clutch 66, the third and the forward gear and the third reverse gear is achieved by switching on the shift brake 46. The gear ratios of the standard reverse gear in the wrong run are smaller for the same gear ratios than for the forward gear, resulting in a faster speed than forward travel. The use of thinnable friction elements, i.e., brakes and couplings, allows the transmission gears to perform uninterrupted power flow through the gearbox, with radiation-type friction elements of the lable type being switched on by means of a pressure medium, in particular oil. PRED Μ ET Series planetary gearbox, with six forward gears and three low speed gears and gearshift shift friction elements, characterized by four-deck rows (21, 31, 41, 51), comprising crown wheels (25, 35, 45, 55) and central wheels (22, 32, 42, 52), the central wheels (22, 32) of the first and second planes (21, 31) being coupled to the output shaft (1) of the series pianoset gearbox, which is also coupled to the inner rotary portion (18) of the friction clutch (11), the central wheel (42) of the third planetary row (41) being coupled with the rotary part of the third shunt brake shifter (46) and centrally (52j of the fourth shafts row (51) is connected to the rotary part of the fourth shifter shifter (56) and the outer rotary part (69) of the shovel ( 66), the inner rotating portion (68) of which is connected to the output shaft (5j of the series planetary stage UNIT of the gearbox and the simple satellites (23,33, 34, 43, 53), the satellites (23, 33, 34 of the first and second planetary rows) (21, 31) are mounted on a common carrier (2) which is at the same time connected to the crown wheel (53) of the fourth planetary row (51) and to the carrier (3) on which. the satellites (43) of the third planet row (41) are stored and the satellites (53) of the fourth planet row (51) are on the carrier (4). which is connected by a crown wheel (45) of the third planetary row (41) and the output shaft (5) of the rough planetary gearbox, by four shifting friction brakes (26, 36,46, 56), wherein the rotational part of the first radial brake (26) is connected to the crown wheel (25) of the first planetary row (21) and to the outer rotary portion (19) of the shifting friction clutch (11) and the rotary portion of the second row friction brake is coupled to the crown. wheel (35 j of second planetary row (31) and two shifting friction clutches (11,66).