SU1391979A1 - Hydropneumatic booster of clutch actuator of vehicle - Google Patents

Abstract

The invention relates to vehicles. The purpose of the invention is to increase the reliability of work. The amplifier contains a double-arm lever 1 pedals, which is equipped with a pneumatic valve 8, the main hydraulic cylinder 3, the working hydraulic cylinder 5 and the pneumatic cylinder 6. The rod of the pneumatic valve 8 is connected to the rod 4 of the main hydraulic cylinder 3. 2 Il.

Description

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The invention relates to a pneumohydraulic amplifier of a drive, preferably a drive clutch transport

 facilities.

; The purpose of the invention is to increase the reliability of work.

I FIG. 1 shows the proposed force, general view; in fig. 2 - lever was given with pneumatic valve installed on it.

I A pneumatichydraulic power unit with vehicle clutch water contains 1 pedal mounted on the lever

I 2, the main hydraulic cylinder 3 connected by its rod 4 to the lever 1, the working hydraulic cylinder 5 and the pneumatic cylinder 6 connected to the clutch lever 7 and the pneumatic valve 8 mounted on the lever 1 of the pedal 2. Spring-loaded pneumatic rod 9 valve 8 is integral with the following piston 10 and at one end connected to the stem 4 of the main hydraulic cylinder 3, and at the other end is provided with a hollow pusher having the ability to act on the spring-loaded valve 11. In the initial position between The stem 9 and valve 11 have a gap “A, cavity” B connected to a source of compressed air, and cavity “C” through internal drilling in the rod 9 and through hole 12 to the atmosphere. The cavity “B” is also connected with the pneumatic cylinder 6 by means of a pipeline.

Pneumohydraulic amplifier works as follows.

When the pedal 2 is pressed, the lever 1 turns around its axis, the body of the pneumatic valve 8 is displaced with it, and the rod 9 remains stationary for some time, due to which valve 11 slides over the stem of rod 9 and thereby interrupts the message of the cavity "B" of the pneumatic valve with the atmosphere. Further rotation of the lever 1 causes the opening of the valve 11, the compressed air from the cavity “B enters

into the cavity and into the pneumatic cylinder 6, which, when activated, rotates the clutch lever 7.

The following action of the actuator is ensured by the fact that when the lever 1 is in an intermediate position, the pressure of the fluid in the hydraulic circuit drops and under the effect of increasing pressure in the cavity "B" the piston 10 of the pneumatic valve shifts to the left and thereby interrupts the further flow of compressed air. air into this cavity.

In the absence of compressed air, the drive works as a purely hydraulic one.

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Claims (1)

Invention Formula The pneumatichydraulic power of the vehicle clutch actuator, containing a pedal mounted on a two-arm lever, is connected by its rod with 0 a pedal lever; a main hydraulic cylinder; coupled with a clutch lever; a pneumatic cylinder and a working hydraulic cylinder; a pneumatic valve, including a housing with openings with a follow-up piston placed in it with interconnected central and radial holes, a spring-loaded pusher with a central hole and spring-loaded valve, while the pneumatic valve is made with 0 the possibility of communication of the pneumatic cylinder with a source of pressure of compressed air and the atmosphere, characterized in that, in order to increase the reliability of operation, the body of the pneumatic valve is connected to the pedal lever, and the follower piston is provided 5 a rod with a central bore communicated with the central bore of the piston, wherein the pusher is placed on the piston rod and is spring-loaded relative to the latter, the spring-loaded valve is adapted to interact with the rod 0 a piston, the latter being connected to the rod of the main hydraulic cylinder.