SU823570A1 - Device for maintaining rectilinearity of stoping set base frame - Google Patents

Description

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The invention relates to a coal-milling system, namely to a device for automatically maintaining the straightness of the base of the refining complex. ,

 A lime device for automatically maintaining the straightness of the base of the cleansing complex, including a, its power jacks, hydraulic boosters with spring-loaded spools mounted on one base section, and sensors for controlling linearity mounted on other base sections, a coitrode sensor and hydraulic boosters interact with each other Cil.

A disadvantage of the known device is the large leakage in the bypass element of the hydro-pusher.

It is also known a device for automatically maintaining the straightness of the base of the cleansing complex including movement hydraulic masks, control units, base sections with spacers installed at the junction points on the downhole side, and in the form of stops on one of the sections installed in the joints on the bottom of the hull and reverse valve and

the bypass element installed on the adjacent section, pressure and discharge lines 2.

A disadvantage of the known device is the low accuracy and reliability of maintaining the straightness of the base of the cleaning complex.

The purpose of the invention is to improve the accuracy and reliability of

0 base prolinearity.

The goal is achieved by those. That the bypass element is made in. slide valve with a seat for the check valve and axial inlet

5 and radial exit channels.

Fig. 1 is a schematic diagram of the device for maintaining the straightness of the base of the complex; figure 2 - prprotochny gidro0 cutoff, section.

Claims (2)

The proposed device includes a base of the complex or unit, consisting of sections 1, jacks 2 front, pressure head 3 and drain 4 gIDRO5 lines, control blocks 5, stops 6 with adjusting screws 7, spacers (washers) 8 built in from the bottom side, forming hinge joints with a small angle of rotation, the coupling elements 9, which allow predetermined axial and angular displacements on the zaval side, and hydraulic sections 10, consisting of the housing 11 with lead 12 and outlet 13 fittings, false saddles 1 with shoulders 15, valves 16, stabilizing springs 17, plugs 18, movable pushers 19 with axial 20 and radial 21 channels and shank 22, seals 23-26. False seat 14 and plug 18 form the supra-valve cavity 4. To the initial position of section 1, the bases of the complex or aggregate are a straight line. When the valves 16 of the hydraulic shutters 10 are in contact with the movable push seats 19, and the shanks 22 of the followers cooperate through screws 7 with stops 6 on adjacent sections. The device works as follows. When fluid is supplied to hydroseaters in their supravalvular cavities, pressure is applied simultaneously to the valves 16 and to the seats, the pushers 19, creating an increased degree of tightness along the contact surfaces of the valve pairs. With a strictly defined position of the valve 16 and the pushing seats 19, there are exact moments of complete cutting off of the working fluid flows corresponding to the linear arrangement of the base sections. When the operator moves the end sections of the base in the direction of the reservoir by the amount of shaving, during the plow notch, or by the amount of capture, by the harvester-notch, between them and the subsequent sections they change over the signals that serve as hydraulic discharge sections. As sections 1 unfold, under the action of fluid pressure in the supravalvular cavities, the pusher seats 19 move towards the stops 6, and the valves 16, due to the shoulders 15 of the false Saddles 14, remain in place, resulting in depressurization of valve pairs 16-19 and liquid begins to flow into the piston cavities of the jacks of the shifter 2, while moving the base section 1 until all sections of the base are moved by a predetermined amount and are not aligned in a straight line. Thus, the system is closed, having feedbacks that automatically maintain the straightness of the base of the complex or unit. The invention The device for automatically maintaining the straightness of the base of the purification complex, including the hydraulic jacks of movement, control units, base sections with spacers installed in the joints on the downhole side, and with the dammed adjustment elements in the form of an emphasis on one of the sections and hydraulic unit installed on the adjacent section and made in the form of a housing with a reverse cl & pan and bypass element, pressure and discharge lines, characterized in that, in order to increase accuracy and reliability maintaining the base straightness, the hydroseater overflow element is designed as a slide spool with a seat for the check valve and axial inlet and radial outlet channels. Sources of information taken into account in the examination 1. The author's certificate of the USSR 151852, cl. E 21 D 23/00 1979. 2. Authors certificate of the USSR 352013, cl. E 21 C 35/14, 1969 (prototype).