SU370343A1 - HYDRAULIC POSITION OF DOUBLE DISPLACEMENT - Google Patents

Description

The invention relates to mining engineering and can be used as power cylinders for shaft mechanized drill.

Known hydraulic stanchions of double mobility include a cylinder with a working chamber, intermediate and internal plungers of the first and second extensibility stage and a rod, which communicates through the radial channels the rod end of the rack and is fixed on the piston of the intermediate piston.

The counter stand differs from the known ones in that the rod is made with a channel in communication with the working cavity of the rack and is equipped with a piston installed in the inner cavity of the second-stage cylinder and interacting with the piston of the intermediate plunger.

This implementation provides equal. Working resistance of the first and second stages of the rack.

The drawing shows a general view of the rack in the lumen extender.

The rack consists of a cylinder U having a supply 2 for supplying fluid to the working cavities 3, 4 and 5, a supply 6 for supplying fluid to the pinch cavities 7, S and I of the intermediate plunger 10 with a channel 11 connecting the floors 3 and 4, .The inner plunger 12 of the transmitting piston 13 with the rod 14 fixed on the piston part of the intermediate plunger GO, having a channel 15 connecting the cavity 5 with the working cavities 3 and 4, and the channel 16, connects the rod stock of 7, 8, and through channel 17 communicating with cavity 9.

The rack racks are discharged by supplying the working fluid through inlet 2 to channels 11 and 15 in cavities 4 and 5, which ensures extraction of the plungers 10 and 12. The rod cavities 7, 8 to 9 through inlet 6 are connected at this moment to the drain.

The iodation of the stand is obtained by moving the intermediate plunger 10 and the inner plunger 12, which occurs with increasing load on the stand. The working fluid is drained through inlet 2 due to the operation of the hydraulic relief valve. The working resistance of the first and second stages of the pillar is achieved by balancing the piston 13, which forms an additional working cavity 5. The working area of porous 13 is equal to the unbalanced area of the pores} 1 of the first stage.

The irnudnel 1a planting is carried out by feeding the working fluid into interconnected schtock cavities. The working cavities of the rack at this moment are connected to

drain line.

PREED E invented

G11dravlicheskaya double razdnichnosti rack, including a cylinder with a working wheel, intermediate and inner sleeves of the first and second extensibility stage –n rod, communicating the rod stitch points of the joint through the radial channels on the piston of the intermediate plunger, which is different.

that, with the aim of equaling 1) the primary resistance of the first and second stanchions, the rod is made with a channel, 1 ms with the working cavity of the rack and provided with a piston installed in the inner cavity of the second stage plunger and acting with the piston of the intermediate plunger.

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