SU1328234A1 - Trailer brake actuator - Google Patents

Abstract

The invention relates to the field of transport engineering. The purpose of the invention is to reduce the consumption of compressed air. Receiver 3 working brake system. through the valve mechanism 13 of the direct action section of the brake valve 5 n (connected to the brake chambers 6 and through the coupling head 10 to the control line of the trailer. The receiver 4 of the spare braking system through the valve mechanism 18 of the reverse section of the crane 5 and the uncoupling valve 12 is connected to pneumo-spring energy accumulators 7 and through the coupling head to the supply line of the trailer. Mechanism 13 is connected with a follower mechanism having a piston 16, and mechanism 18 is connected with a follower mechanism having pistons 20 and 22. The mechanisms provide reverse operation section acting only on failure of the service braking system 3 3.p. f ly-1-yl (Q 8 Jirid 4T7i irn Yu MJ L &..amp; «

Description

 one

The invention relates to mechanical engineering, namely to the design of a pneumatic brake system of a vehicle, and can be used in the automotive industry.

The purpose of the invention is to reduce the consumption of compressed air.

The drawing shows the scheme of the proposed brake system of the vehicle.

The brake system of the vehicle consists of compressor 1, valve 2, receiver working brake system 3 and spare brake system 4, dt of the securing brake valve 5, brake chambers 6, pneumo-spring energy accumulators 7, disconnecting cranes 8 and 9, coupling heads 10 and 11 , disconnecting tap 12 with adjustable choke.

Two-piece brake valve 5 consists of the upper section of the straight

13

action, including the valve 25 together with the rod 21 and the piston 22

mechanism 13 and a follow-up mechanism comprising a housing 14, a spring 15, a follow-up piston 16 and a rod 17 of the lower section containing the valve mechanism. the bottom 8 and the follow-up mechanism, comprising a housing 19, a follow-up engagement 20, a rod 21, a piston 22, a spring 23, a retaining ring 24 and a rod 25,

When turned on, the compressor 1 fills the receivers 3 and 4 through the protective valve 2, from the receiver 4 of the spare brake system passes compressed air through the valve mechanism I8 of the lower sections of the reverse action of the two-section brake valve 5 and through the uncoupling valve 12 with adjustable throttle into the spring sections of the pneumo-spring accumulators and enters through the release valve 9 and the coupling head 11 into the trailer supply line,. ;

When a two-piece brake valve 5 is applied to the rod 25, the force is transmitted through the spring 15 to the next piston 16 and the rod 17, then through the spring 23 to the next piston 20. Moving the rod 17 triggers the valve mechanism 13, the compressed air fills the brake chambers 6, diaphragm sections pnev-. spring energy accumulators 7 and through the disconnecting crane 8 and the coupling head 10 enters the trailer control line, at one time

35

40

moves downward; in this case, the valve mechanism 18 of the lower section is activated and the compressed air from the spring sections of the pneumatic spring energy accumulators and the supply line is released into the atmosphere. Due to this, with some delay due to inertial feedback, the mechanism of the lower section is compressed, the force of compressed air on the piston 22 into the strips above it becomes less than the force in the cavity under the piston, and the piston 22 together with the rod 21 and the next part 20 rises up , while the release of air into the atmosphere from the stopping brake system is thus stopped, the pressure in the spare brake system is relieved with regard to the pressure in par 4g of the barrel brake system, since the line on the rod 25 is balanced by force the following mechanisms of the upper and lower sections of the two-section sliding crane. When removing the force from the stem 25, the upper and lower sections follow the initial position, compressed air is released from the service braking system, and the spare braking system is simultaneously filled with compressed air.

When acting on an uncoupled valve 12c, the adjustable throttle is braked one hundred night by the brake system, and

50

55

th

ten

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The compressed air enters the cavity below the follower piston 20, preventing it from moving downwards, and the locking ring 24 secures it to move upwards. Due to the inertial feedback of the follower mechanism of the upper section, the compressed air enters the cavity under the following piston 16, which together with the rod 17, it moves upwards, while the valve mechanism 13 blocks the flow of air from the receiver into the service braking system, thus, the following action is performed. When the force is removed from the rod 25, the follower piston 1 6 with the rod 1 7 is in the initial position and the compressed air from the service brake system is released into the atmosphere,

In the event of a decrease in pressure in the service braking system, the force of compressed air to the next piston 20 is not enough to hold it, and

15

20

0

five

0

moves downward; in this case, the valve mechanism 18 of the lower section is activated, and the compressed air from the spring sections of the pneumatic spring energy accumulators and the supply line is discharged to the atmosphere. As a result, with some delay due to the inertial feedback of the tracking mechanism of the lower section, the compressive force. In addition, there is less force in the cavity under the piston on the piston 22 in the cavity above it, and the piston 22 together with the rod 21 and the next piston 20 rises up. the release of air into the atmosphere from the reserve braking system ceases, thus, the pressure in the spare braking system is monitored taking into account the pressure in the working braking system, since the force on the rod 25 is balanced by the force of the following mechanisms of the upper and lower sections of the two-section brake crane. When the force from the rod 25 is removed from the track, the mechanisms of the upper and lower sections occupy the initial position, compressed air is released from the service braking system and at the same time the spare braking system is filled with compressed air.

When acting on a disconnected tap 12c, the adjustable throttle is braked by a standing night braking system, and moreover

five

My throttle provides smooth braking,

F o rmula of the invention

Claims (4)

1. A braking drive for a gauge containing a brake valve, having a direct action section with a follow-up mechanism, connecting the receiver of the working, brake system with the working cavities of the brake chambers, and the reverse section connecting the receiver of the spare brake system with the working a cavity of pneumatic spring energy accumulators, and a supply and control trailer trunk, characterized in that, in order to reduce the consumption of compressed air, the forward action section of the brake valve is located above the reverse action section, the following mechanisms still which is made of a body placed in two porschney associated with each other; rod, passed through the hole, in the housing wall, while above the upper vile porschnem communicated with the atmosphere, the cavity between the upper piston and the partition wall communicates with the Compiled by C, Makarov Editor M.Blanar Tehred A. Kravchuk Proofreader M, Order 3440/22 Circulation 598 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5 Production and printing company, Uzhgorod, st. Project, 4 the outlet of the direct action section, the cavity between the lower piston and the septum — with the output of the reverse action section, the inlet of which is connected to the cavity below the lower piston, and a stop ring and a spring connecting the upper piston with the following mechanism of the direct action section are installed above the upper piston. . 2, Drive according to claim 1, characterized in that the coupling of the cavity between the septum and the lower piston with the output of the reverse action section and the feedback of the follow-up mechanism of the direct action section is performed through adjustable chokes, 3. Drive POP.1, as per tichlich and and with so that the governing the trunk is connected to the output of the direct action section, and the pitak trunk is connected to the output of the reverse action. Q. 25 4. Actuator pop. 1, which differs from the fact that at the outlet of the reverse action section a disconnecting tap is installed with an adjustable choke at the outlet to the atmosphere.