SU1388610A1 - Friction clutch control linkage - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to mechanical engineering, mainly to coupling couplings of wheeled vehicles. The aim of the invention is to improve performance by providing a signal that a state is close to the maximum permissible friction wear.

Description

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masonry (FN), and the formation of a reserve of time required to replace worn out FN. For this purpose, an actuating hydraulic cylinder 5 with an annular elastic seal 6 in the bottom, a spring-loaded piston (PN) 7, a plunger (Ø {) 8 with an axial groove 9 is provided in the control drive. , limiter 10 stroke PZH 8, pusher 13, discs 16 and 17 with FN 19. In PN 7 there is located ПЖ 8 from the supply side of the working fluid and is spring-loaded to limiter 10. Limiter 10 is installed in PN 7 and its free end is located in slot 9 RV 8. i. The distance between the end of PN 7 and seal 6 is equal to individually

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the allowable wear of the FN 19. With the wear of the FN 19, the pressure plate 17 additionally moves towards the flywheel 18 by the amount of wear. PN 7 and RV 8 moves towards the bottom of the hydraulic cylinder 5. With further wear, FN 19 with seal 6 contacts RV 8 and moves further inside the PI 7. Due to the additional force on W1 7, the pressure disk 17 additionally moves towards the flywheel 18 by the amount of wear that allows you to increase the time of operation of the coupling without replacing the friction linings after the appearance of a signal about the achievement of their maximum permissible wear. 1 il.

The invention relates to mechanical engineering, mainly to coupling couplings of wheeled vehicles.

The aim of the invention is to improve the performance characteristics by providing a signal that a condition has been reached, which is close to the maximum allowable wear of the friction linings, and the time needed to replace the worn friction linings.

The drawing shows the proposed drive control of the friction clutch,

The actuator contains a clutch control pedal 1, a release spring 2, a master cylinder 3, a pipeline 4 and an actuating hydraulic cylinder 5, in the bottom of which an annular elastic seal 6 is placed. In the piston 7 of the hydraulic cylinder 5 on the supply side, the working valve is located an axial groove 9 , spring-loaded To the stop 10 of the spring 11. The stop 10 of the stroke is installed in the piston 7, and its free end is located in the groove 9 of the plunger 8. The plunger 8 is mounted with the possibility of displacement relative to the piston 7 towards the supply of working fluid to Foot depressible. The piston 7 is pressed by the spring 12 to the lever system consisting of the pusher 13 and the release fork 14, acting through the clutch bearing 15 and the pull levers 16 on the pressure plate 17, the flywheel 18 and the friction linings 19.

A pressure spring 21 is located between the pressure disc 17 and the clutch face 20. The distance between the piston 7 and the seal 6 is equal to the maximum permissible wear of the friction

lining 19.

The drive works as follows. When the operator presses pedal 1, the working fluid is expelled from the master cylinder 3 through line 4 and moves the piston 7 and the pusher 13, transferring force from the pedal 1 to the clutch fork 14, the clutch release bearing 15, which acts on the lower end of the cylinder

16, squeezing the disk 17 from the flywheel 18, as a result of which the pressure spring 21 is compressed, its pressing force on the friction lining 19 decreases and the clamping force between the flywheel 18 and the pressure disk 17 weakens. When the clutch is fully disengaged, the pressure force on the friction lining 19 not transmitted.

During operation, the friction linings 19 are worn and when the clutch is disengaged, the pressure plate 17 additionally moves toward the flywheel 18 by the amount of wear of the linings 19, while the ends of the levers 16 move away from the flywheel 18 and the piston 7 moves towards the bottom of the hydraulic cylinder 5. When the assembly by adjusting the adjustment of the pusher 13, the piston 7 is installed so that when the maximum allowable wear of the linings 19 is reached, the ends of the piston 7 and the plunger 8 abut against the seal 6, while part of the effective plate The piston 7, which is initially affected by the working fluid, is disconnected from the main pipeline D. To displace the piston 7 in this position, it is necessary to apply greater force to the pedal 1 than before touching the plunger 8. Seal 6, the Operator feels a stepwise increase in pedal effort 1 as a signal of the achievement of the maximum wear of the pads 19 and their replacement. However, the clutch operation is not disturbed for an additional certain time, since with further wear of the friction linings 19 and the additional movement of the pressure disk 17 towards the flywheel 18, the end face of the plunger 8 moves along the piston 7 inside it. is embedded in the piston 7, compressing the spring 11, which necessitates the application of additional force to the piston 7, which is transmitted through the lever-drive system to the pressure disk 17. This additional pressing provides additional temporary operability of the coupling,

Thus, when the pedal 1 is depressed, C12 is carried out to achieve maximum wear of the friction linings 19 without disrupting the clutch operation for an additional specific clutch operating time sufficient to replace the friction

ABOUT

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lining 19. The magnitude of this additional time is determined by the amount of displacement of the end face of the plunger 8 relative to the piston 7, since when the plunger 8 is fully lowered and the end of the piston 7 is in contact with the seal 6, the clutch loses its functionality.

Claims (1)

Invention Formula A friction clutch control actuator comprising an actuating hydraulic cylinder whose working cavity is connected to the main pipeline, and the piston is kinematically connected with a thrust transfer lever system and spring-loaded to it, an annular elastic seal installed on the side of the supply of the working fluid, characterized in that the goal of improving performance by providing a signal that a state is close to the maximum allowable wear of the friction linings, and creating a time margin To replace worn friction linings, it is equipped with a plunger and a plunger stroke limiter, the plunger is made with an axial groove, placed in the piston with its end protruding over the piston end on the supply side of the working fluid and spring-loaded to the travel stop with the possibility of displacement relative to the piston to the supplying the working fluid to a full retraction, the stop is installed in the piston, and its free end is located in the axial groove of the plunger, the annular elastic seal is placed in the hydraulic cylinder, while The connection between the piston and the seal is equal to the maximum allowable wear of the friction linings.