SU1377493A1 - Pneumohydraulic system - Google Patents

Abstract

Invention m. used in machine tools. The purpose of the invention is to increase the reliability of the system, the Hydro deffer 2 is rigidly connected with its case to the case of the pneumatic cylinder 1 and contains a piston 8 with a double-sided rod 9 of different diameters. On the side of the rod 9 of larger diameter, the floating piston JO is installed with the formation of cavities P-12 and J3. In J2, a limiting eel 16 is installed, and outside the damper 2, an emphasis 17. PJ from the side of rod 9 of smaller diameter n P 12 are interconnected via parallel-installed flow regulator J4 and non-return valve 15, and P 13 are connected to a reversible four-line distributor 5, The system provides fast approach, working feed and fast retraction. 1 il.

Description

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The invention relates to engineering hydraulics and can be used in pneumatic actuators, for example, in machine-tool construction.

The purpose of the invention is to increase reliability.

The drawing shows the scheme of the device,

The pneumatic hydraulic system contains a pneumatic cylinder with a hydraulic damper 2, cavities 3 and A of the pneumatic cylinder 1 are connected via a four-way reversible distributor 5 with a source of pneumatic 6 and exhaust 7. The hydraulic damper 2 includes a piston 8 with a double-sided rod 9, the sides of which are of different diameters, and the pneumatic-cyclical cylinder 8 with the damper 2 is determined by adjusting the speed regulator J4. The floating piston JO is shifted to the right.

When the distributor 5 is switched to the left position, the pneumatic cylinder 1 with the hydraulic damper 2 moves to the left, while the piston 8 is moved to the right by the differential connection of its cavities 11 and 12 through the check valve 15 to the cavity 13 of the hydraulic damper 2.

Claims (1)

Invention Formula A pneumatichydro system containing an executive pneumatic cylinder with a hydraulic damper, whose bodies are rigidly The connecting piston 10 mounted on the station 20 is connected to each other, the cavities to the pneumatic piston rod 9 of a larger diameter, the pistons 8 and 10 forming cavities 11-13, of which the cavities 11 and 12 are interconnected through parallel-mounted flow regulator 14 and reverse the valve 15, and the cavity 13 is connected to one of the lines of the distributor 5. The hydraulic damper 2 is provided with restrictive stops 16 and 17, of which the stop 36 is installed in the cavity 12 of the hydraulic damper 2, and the stop 17 is outside the hydraulic damper 2 and can be made, for example, adjustable, such as adjustable stop 18 mon B motsilindra 1. The device works in the following way. When switching the distributor 5 to the right (according to the drawing) position, the pneumatic cylinder J with the hydraulic damper 2 moves to the right in the fast-speed mode until the rod 9 stops at the stop 17, after which the recycle cylinder speed is connected to the source of air pressure and exhaust through the reversible four-line distributor, and the hydraulic damper cavity interconnected via parallel-installed non-return valve and flow regulator, the hydraulic damper being made with a double-sided stem, which is interoperable, with a restriction with electric stops, characterized in that, in order to increase reliability, the hydraulic damper is equipped with a floating piston installed in one of the hydraulic damper cavities with the formation of a third cavity connected to one of the reversing distributor lines, the sides of the hydraulic damper rod are filled with different diameters with large the diameter of the cavity in which the floating is placed a piston, with one of the restriction stops installed in the cavity of the hydraulic damper between its pistons.