SU857478A1 - Device for moving plough base - Google Patents

Description

(54) DEVICE FOR MOVING THE BASE

Rod

I

The invention relates to the mining industry and can be used for coal mining by the underground method.

A device for moving a plow base is known, including movement hydraulic jacks mounted perpendicular to the base and connected. hydraulically by means of valves in parallel 1.

The disadvantage of this device is low reliability in operation.

A device for moving the base of the cleaning unit is known, including hydraulic jacks of movement associated with the support and base sections, synchronizing hydraulic jacks with double-sided rods and equal cross-sectional areas of the internal cavities which are interconnected in series, and valves 2.

A disadvantage of this device is low reliability.

The purpose of the invention is to increase reliability.

This goal is achieved due to the fact that the device for moving the base of the plow includes hydraulic jacks of movement associated with the lining and base sections.

synchronizing hydraulic jacks with double-sided rods and valves. In addition, the synchronizing hydraulic jack is installed inside the cylinder of the hydraulic jack of movement and is equipped with a piston attached to one of the ends of the cylinder of sleep

5 guns and a hollow pusher fixed at the other end of the cylinder and connected to the plow base section. In this case, the double-sided rod is passed at one end through the pusher, and the other is fixed on the lindra of the hydraulic jack of movement.

The drawing shows the proposed device for moving the plow base. The device contains lining sections 1, which are connected to the cylinders 2 of the hydraulic jacks of movement, this with sections 3

15 of the plow base, hollow pushers 4 are connected, which, in turn, are fixed on the cylinder 5 of the synchronizing hydraulic cylinder 6, which are located inside the cylinder of the hydraulic cylinder of movement.

20 Pipeline 7 internal cavities 8 and 9 of the jacks are connected in series. In addition, the valve 10 may connect the cavities of each synchronizing hydraulic cylinder to each other via pipes II and 12. Pipeline 13 connects the valve 10 to the rod cavity 14 of the hydraulic hydraulic cylinder of movement. With the help of check valves 15 and pipeline 16, the hydraulic system of synchronizing hydraulic jacks is connected to batteries, which compensate for leaks. The main pipelines 17 and 18 supply fluid to the piston 19 and the rod end of the locating jacks. The device for moving the plow base operates as follows. In order to extend the base into the piston 19 cavity of the traveling hydraulic jacks, pressurized fluid is supplied. The piston of the hydraulic jack begins to move and the hollow pusher moves to the bottom section of the base. Since the double-sided rod remains stationary, the fluid from the cavity 9 of the synchronizing hydraulic jack is squeezed into the cavity 8 of the adjacent synchronizing hydraulic jack. The movement of the piston of the hydraulic jack is possible if the volumes of fluid displaced from the cavity 9 are transferred to the cavity 8 in full volume, etc. Consequently, the movement of the piston of any travel jack is only possible provided that all other pistons are advanced by the same amount, and sections of the plow base connected to the pistons of the travel hydraulic jack with a hollow pusher move synchronously. At the same time, the base advance can be carried out on the required pitch or frontally for the entire stroke of the jack. Z / 45

IS

one

Claims (2)

Г-1П After completing the base advancement, the process of moving the support sections begins. The pressurized fluid is supplied to the cavity 14 of the movable ram and simultaneously into the cavity of the valve 10, which under the action of pressure switches and automatically interconnects the cavities of each synchronizing ram. Such a constructive implementation of the device for moving the plow base significantly improves operational reliability. The invention of a device for moving a plow base, including moving hydraulic jacks, associated with support sections and bases, synchronizing hydraulic jacks with double-sided rods and valves, characterized in that, in order to increase reliability in operation, a synchronizing hydraulic jack is installed inside the hydraulic jack of a moving cylinder and provided a piston attached to one of the ends of the cylinder from the outside, and a hollow pusher attached to the other end of the cylinder and connected to the plow base section, with two-sided the rod is passed at one end through the pusher, and the other is fixed on the cylinder of the hydraulic jack of movement. Sources of information taken into account during the examination 1. Mountainous complexes and complexes. M., “Nedra, 1971, p. 543-545. 2. USSR author's certificate number 643637, cl. E 21 C 27/32, 1979 (prototype).