SU1657776A1 - Power cylinder with energy accumulator - Google Patents

Description

one

(21) 4296712/29

(22) 08/10/07

(46) 06.23.91. Yyul №23

(72) V.P. Alekseev, V.A. Yuminov and A.F. Krivilev

(53) 621.225 (088.8)

(56) USSR Author's Certificate No. 198864, cl. F 15 B 15/18, 1965.

(54) POWER CYLINDER WITH ENERGY BATTERY

(57) Invention m. used for mechanization of tooling, the purpose of the invention is to simplify the design of the power cylinder, the elimination of gas losses and

automatic compensation of fluid losses from the chamber of a pneumohydroaccumulus (PGA). The piston 2 with the rod is installed in the housing 1 with the formation of the working cavity (P) 3, communicated with the chamber 6 L HA, and returnable P 4 communicated with the external power source. The compensation device is designed as a check valve 8 built into the piston 2, which connects P 4 to P 3. Chamber 6 is located in the P stem. Hydraulic P PH is located in the lower part of P piston 2 and connected through channel 7 with P 3. The volume of the chamber 6 when working pressure in P 4 is constant. 1 il.

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ABOUT

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The invention relates to mechanical engineering and can be used, in particular, for the mechanization of tooling.

The purpose of the invention is to simplify the design, eliminate gas losses and automatically compensate for the loss of fluid from the chamber of the pneumohydroaccumulator.

The drawing shows a cylinder, a general view, a section.

The power cylinder includes a housing 1 in which a piston 2 with a rod is installed, forming in the housing 1 a working cavity 3 and a return cavity 4 communicated by channel 5 with an external energy source of fluid flow. Chamber b of a pneumohydroaccumulator is made inside piston 2. The lower part of chamber 6, filled with liquid, communicates with channel 7 to the working cavity 3. A check valve 8, embedded in piston 2, communicates cavity A with cavity 3. In addition, valve 8 acts as a valve required to charge the battery.

A tube 9, hermetically connected to valve 8, communicates it to cavity 3, which prevents gas from leaking through valve 8. A key 10 on piston rod 2 ensures position of housing 1, at which channel 7 is permanently located in the lower part of chamber 6. Charging accumulator the torus is supplied to the chamber 6 with the estimated amount of gas, and the liquid is supplied under the nominal working pressure through the channel 5, the cavity 4 and the valve 8.

The power cylinder operates as follows.

When the pressure in cavity 4 is relieved by switching an external energy source, piston 2 makes a working stroke and moves to the left (according to the drawing), developing a pulling force. During the working stroke of the piston 2, the pressure in the chamber 6 decreases against the charging pressure by an amount proportional to the stroke of the piston 2, as part of the liquid is displaced from the chamber b into the cavity 3, and the volume occupied by the gas increases.

In order to prevent gas from escaping chamber 6, the amount of fluid supplied to chamber 6 during charging is calculated with some excess amount of fluid displaced into cavity 3 at the maximum stroke of piston 2.

When the fluid is supplied from an external energy source at a nominal working pressure into the cavity 4, the piston 2 moves to the right (according to the drawing). The fluid from cavity 3 returns to chamber 6, and at the end of the stroke

the piston 2, when it abuts the bottom of the housing 1, in the chamber 6 the charging pressure is restored.

During operation, fluid losses from the battery through the ports in the piston 2 and the rod and the check valve 8 are inevitable, with the result that the volume occupied by the gas in chamber 6 increases and its pressure decreases. When the critical difference is reached between the pressures in cavity 4 and chamber 6, valve 8 opens, a portion of the liquid enters chamber 6, and nominal pressure is restored in chamber 6.

Claims (1)

Invention Formula Power cylinder with battery energy, comprising a housing, a chamber of a pneumohydroaccumulator, a piston with a rod mounted in the housing with the formation of a working cavity communicated with the chamber pneumohydroaccumulus, and a return cavity communicated with an external power source, characterized in that, in order to simplify the design, eliminate gas losses and automatic compensating for the loss of fluid from the chamber of the pneumohydroaccumulator, the cylinder is equipped with a compensation device made in the form of a non-return valve built into the piston informing the cavity 0 cylinder with a working cavity, the chamber of the pneumohydroaccumulator of the torus is located in the cavity of the rod, and the hydraulic cavity of the pneumohydroaccumulator of the torus is located in the lower part of the piston cavity and 5 is connected through a channel in the piston with the working cavity of the cylinder, and the volume of the chamber at a working pressure in the return cavity is constant.