SU1243973A1 - Self-propelled machine automatic progressive transmission - Google Patents

Description

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The invention relates to mechanical engineering and can be applied in the construction of various self-propelled machines.

The purpose of the invention is to expand the range of infinitely variable speed control of the machine, simplify the design of the transmission and control the machine,

Figure 1 presents the kinematic, Q ka transmission scheme; FIG. 2 is a section A-A in FIG. 1;

The input shaft 1 is rigidly connected to the sun gear 2, which together with the satellites 3 is placed in the slots of the housing -. carrier 4, provided with discharge channels 5, also made in the output shaft 6, rigidly connected with carrier 4. Ejector jCo 7 is made integral with casing 8 and installed on the overrunning clutch 9, in turn, the band brake 11. With elastic element 12 mounted on the output shaft of the rotary throttle bushing 13, kinematically connected with a belt brake 11, When water 14 of the band brake 11 and the control pedal are kinematically separate connected to an additional rotary throttle valve lkoy 15 is also mounted on the input shaft 6 and connected to the reverse gear 16, sleduyushdm device operates properly.

The position of the self-propelled machine, the rotation of the engine shaft through the input shaft 1 of the transmission is transmitted to the sun gear 2 and the satellite 3, and the Elixir wheel 7 is decelerated, t, e, the belt brake 11 is released and is not in contact with. the outer shell 10 of the overrunning clutch 9. Due to this, the rotation of the satellites 3 causes the epicyclic wheel 7 to rotate in the opposite direction, and the casing of the drive 4 with the output shaft 6 remains stationary. The flow rate of working fluid created by satellites 3 and sun gear 2, which filled the volume, limited by the casing 8 and the epicyclic wheel 7, flows through the injection channels 5 freely to the drain through the additional rotary sleeve 15. When moving off. The driver gradually turns on the belt brake 11 and, while braking the outer ring 10 of the overrunning clutch 9, at the same time slows down the rotation.

epicyclic wheel protection 7. At

This begins to gradually rotate in one direction with the sun gear .2 and the building with the carrier 4 and the output shaft 6. With the epicyclic wheel 7 completely stopped, the transmission ratio of the transmission is equal to the calculated, geometrical parameters of the planetary gear formed by the links 2, 3 and 7, Due to the kinematic connection of the drive of the band brake with an additional sleeve, with the brake completely switched off, the free discharge of the working fluid will be completely blocked. When shutting off freely, the pressure of the working fluid will increase in the discharge channels.

The forward movement of the self-propelled machine.

Simultaneously with the braking of the epicyclic wheel and the beginning of the movement of the car on the epicyclic wheel, the reaction will begin to grow from the moment of resistance to the movement of the machine. This reaction will be perceived through the outer cage of the overrunning clutch with the tape brake and | / other element 12, Z. due to the kinematic connection of the latter with the rotary throttle bushing, the throttling of the working fluid will occur, and consequently the speed of rotation of the satellites and respectively output shaft. With a large movement resistance mapgina equal to the nominal torque of the engine, the discharge channels are fully open and the transmission ratio is maximum. When the resistance to the movement of the machine decreases, the response on the elastic element decreases accordingly, and the rotary throttle bushing, by moving, reduces the flow areas of the discharge channels up to their complete overlap. As a result, the transmission ratio will be minimal and the movement speed will be maximum.

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Thus, throughout the entire range of gear ratios, there is a kinematic connection of the deformation of the elastic element or the twisting angle of the band brake and the rotary throttle bushing. This connection is realized without the driver's fate.

When stopping a self-propelled machine moving by inertia.

Thus, throughout the entire range of gear ratios, there is a kinematic connection of the deformation of the elastic element or the twisting angle of the band brake and the rotary throttle bushing. This connection is realized without the driver's fate.

When stopping a self-propelled machine moving by inertia.

The driver, through the control pedal, acts with a belt brake, disengages the outer race of the overrunning clutch, and on the additional slewing bushing 15 and.

unloads the epicycle and discharge channels. For stopping additionally include TopNio3a thrusters

as in conventional self-propelled machines.

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Enactment

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Editor I. Segl Nick

Compiled by S. Pankratov

Tehred O. Sopko Proofreader I. Muska

Order 3754/17 Circulation 647 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Claims (1)

AUTOMATIC TRANSMISSION OF SELF-PROPELLED MACHINE, comprising a reduction gear unit, a control pedal, a reverse gear connected to the output shaft of the reduction gear unit, made in the form of a planetary gearbox with an epicyclic wheel mounted on a freewheel clutch with an outer cage, and a sun gear placed in the grooves of the carrier body and provided with discharge channels made in the output shaft, on which the rotary throttle sleeve, the belt brake, the elastic element and the casing are installed, excellent which, in order to expand the range of stepless control of the speed of the machine, simplify the design of the transmission and control, the outer cage of the freewheel is sequentially connected to the body of the car through a belt brake mounted on an elastic element, while the elastic element is kinematically connected with a rotary throttle sleeve, moreover, the belt brake drive is kinematically connected with an additional rotary sleeve installed in series with the rotary throttle sleeve in the channel on the output shaft, and the casing is made integral with the epicyclic wheel. SU ,,. 1243973