SU1421573A2 - Pneumatic booster - Google Patents

Description

(61) 1239002

(21) D205771 / 31-1J

(22) 03/06/87

(46) 09/07/88. Bul Number 33

(71) Belarusian Polytechnic Institute

(72) E.A.Malov, R.E. Denisov and A.E. Pavlovich

(53); 629.113-59 (088.8)

(56) USSR Author's Certificate No. 1239002, cl. B 60 T 13/58, 1984.

(54) PNEUMATIC USER

(57) The invention relates to a means of transport equipped

pneumatic system to control them. The purpose of the invention is to ensure smooth movement of the power rod. The saddle 8 is made in the form of a washer with a radial annular o-ring 9 at the reinforcement of the thin rubber ring 10, which with its peripheral part is fixed in the cylindrical bore of the piston 4 with the aid of a brush 11. Between the saddle and the cup P there are two dish-shaped springs 12, a control rod 7 is installed inside the seat 8 with a gap. In operation, the pulsation is extinguished by the springs 12 and the ring 10, and the rod 5 moves smoothly. 1 il.

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The invention relates to transport means HbiM equipped with a pneumatic system: it is designed to facilitate control of the vehicle and is an improvement to the amplifier according to the author. No. 1239002.; The purpose of the invention is to ensure the smooth movement of the power shaft. The drawing shows a pneumatic |: amplifier, general view,

The pneumatic amplifier consists of body 1, rear key 2, front cover 3, hollow piston 4, inside which a power rod 5 is fixed. In the cylindrical bore of the power rod 5 there is a spring-loaded Flat valve 6 in contact with: the end face of the hollow control rod 7. V cylindrical bore piston 4 us; installed; the saddle 8 in the form of a washer with a radius flange 9, a reinforcing rubber ring 10, which with its peripheral part is clamped I in the cylindrical bore of the piston 4: using a cup P. There are two disc springs 12 in the saddle 8 and cup 11 larger diameter. The control rod 7 is spring-loaded with respect to the hollow piston 4 by the spring 13.

Between the end face of the piston 4 and the rear part .. Krishka 2, a force cavity A is formed between the end face of the piston 4 and the front cover — the control cavity B.

The pneumatic amplifier works in the following way.

Compressed air from an external source is supplied to the power cavity L and then through the hole 14, the gap between the valve 6 and the annular flange KO1 9 of the saddle 8, the gap between the control rod 7 and the tracking element enters the control cavity B,

Due to the fact that the diameter of the power rod is larger than the diameter of the control rod, the hollow piston 4 is in the extreme (initial) lower position,. Due to the fact that the pressure of compressed air on the rubber ring 10 is the same on both sides, the cup springs 12 are in a free state. The end face of the control rod 7 is pressed against the valve 6 by the spring 13, and the valve 6 is detached from the annular flange 9.

When acting on the control rod 7, the latter moves to

Krshka 3 side, compressing the spring 13. In this case, the flat valve 6 sits on the saddle, and the cavities A and B are separated.

: With the further movement of the control rod 7 5, its end otgoroet- from the valve 6, together with the control cavity B with the atmosphere. A portion of the compressed air from the cavity B is released into the atmosphere. Under the influence of compressed air from the side of the power cavity A, the piston 4 together with the power rod 5, providing the force Q, begins to move in the direction of the control rod 7 until the valve 6 is not located on the seat of the control rod 7, keeping contact with ring flanging 9 of the seat 8. The ring 10 under the influence of compressed air from the side of the cavity A moves towards the control rod 7, compressing the leaf springs 12, and the seat 8 is detached from the valve 6 and the cavities A and B communicate.

The displacement (oscillation) of the seat 8 and the ring 10 is stopped after balancing the forces of the cup springs 12 and the pressure of compressed air from the cavities A and B. At the same time the valve 6 sits on the seat 8, keeping contact with the seat of the control rod 7 Moving the piston 4 together with power rod 5 terminated. The movement of the power rod 5 occurs smoothly without pulsation, since the functions of the follow-up action (oscillatory motion while balancing the forces of the springs 12 and the forces exerted by the compressed air from the cavities A and B) are performed by the rubber ring 10 and the oscillating process is not transmitted to the force rod 5 .

Claims (1)

Invention Formula Pneumatic amplifier according to Av. No. 1239002, characterized in that, in order to ensure smooth movement of the power rod, the seat in the piston is designed as a washer with a radial ring flange, a reinforcing rubber ring, which is fixed by a cup in the cylindrical bore of the piston with a peripheral part, at the same time between the sleeve and the cup has two spring plates, which are in contact with each other in a larger diameter.