SU1224409A1 - Unit of power support - Google Patents

Description

This invention relates to the fixing of cleaning openings and can be used in underground coal mining.

The wear section of the mechanized roll, including a visor with a movable part, a base, an overlap, a hydraulic post, two hydraulic cylinders, of which the same cavities are communicated by me.

The disadvantages of this device are the implementation of automatic compensation of the waste of the visor due to the increase in its length when the lining section is moved apart and the design complexity of the visor with the sliding part.

Closest to the invention is a mechanized support section, comprising a base, overlapping with a visor, a hydraulic post, a section shifter hydraulic cylinder connected to the base and a base for pushing the section and having a section advancement cavity and a base shifting cavity, and tiled with base and overlap.

However, this device does not ensure reliable operation of the section when the visor moves away from the bottom.

The aim of the invention is to increase the reliability of the section during the automatic compensation of the visor from the bottom.

To achieve this goal, in the mechanized support section, which includes the base, the overlap with the visor, the hydraulic post, the section shifter hydraulic cylinder associated with the base and the base for pushing the section and having the section shifter cavity and the base shifting cavity, an additional hydraulic cylinder, hydraulic cylinder the advances are equipped with an additional piston movably mounted in the cavity of the base shifter for pushing the support section, with this piston cavity of the additional hydraulic cylinder communicating with the hydraulic cylinder cavity redvizhki located between the additional piston and the end of the hydraulic cylinder.

Figure 1 shows the lining section with reduced hydraulic legs; in Fig. 2, the same section is shifted by a step of shifting; FIG. 3 shows a section with fully spaced hydrostats.

0

five

0

five

0

five

0

five

Kami; 4, the same section is moved.

The mechanized support section consists of base 1, overlap 2, visor.3, hydraulic posts 4, hydraulic cylinder 5 advancing with additional

a piston 6 pushed in one of the cavities, for example, the rod cavity 7. For extending the lining section by the piston cavity 8, the shifting hydraulic cylinder 5 is mounted at one end on the base 1, and at the other end on the guide 9 connected to the conveyor 10. An additional The hydraulic cylinder 11, which is installed hingedly under the overlap 2, monitors the position of the visor 3 relative to the bottom of the chest. In this case, the hydraulic communication 12 connects the piston cavity 13 of the hydraulic cylinder 11 with the rod cavity 7 of the hydraulic cylinder 5 into a closed system. A cavity .14 located in the hydraulic cylinder 5 is hydraulically connected to the main pipeline and serves to extend the conveyor 10.

The operation of the mechanized support section is carried out as follows.

In the initial position (Fig. 1), the support section is set at a predetermined distance from the bottom, the conveyor 10 is advanced to the bottom, and the hydraulic cylinder 5 and the additional hydraulic cylinder 11 are compressed. At this time, the working fluid from the piston cavity 13 passed into the rod cavity 7, and the additional piston in the hydraulic cylinder 5 was in a position in which the stroke in the piston cavity 8 was equal to the step of shifting the support section, and the stroke in the rod cavity 7 was equal to compensate for the deviation of the visor.

After passage of the npi-r combine, the pressure is supplied to the piston cavity 8, the position of the conveyor 10 does not change, and the support section moves by the step length of the support support section (Fig. 2). This condition will be maintained for all subsequent relocations of the support section.

When pressure is applied to the piston cavities of the hydraulics 4, the overlap 2 is rotated relative to the base 1. In this case, the visor 3 is removed from the bottom, and the additional hydraulic flange 11 begins to move apart, the hydraulic fluid 12 from the rod cavity 7 goes through the hydraulic communication 12 and enters the piston cavity 13 and. the additional piston b will move to the left (Fig. 3), the piston cavity 8 will automatically increase by an amount corresponding to a given distance between the face and the support section for any height of its sliding (figure 4). As the piston cavity 8 increases automatically taking into account the departure the visor from the bottom, the support section is automatically set at a predetermined distance from the bottom. This condition is preserved at all subsequent advances of the support section and conveyor and on all ranges of the extracted thickness of the formation.

In the proposed section, the issue of compensating for the waste of the visor is solved due to the fact that the conveyor under the section occupies a position depending on the reservoir thickness to be removed, i.e. the conveyor adapts to the support section and not vice versa. it

allows you to simplify the design of mechanized roof support and maintain its bearing capacity at any thickness of the reservoir to be extracted.

Such a design

Section increases the reliability of its work.

//

(Put 2

.lt 6c

Compiled by V. Ponomarev Editor M. Kelemesh Tehred I. Popovich Corrector I. Muska

Order 1898/28 Circulation 462Subscription

VNYIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

//

Production and printing company, Uzhgorod, st. Project, 4

Claims (1)

SECTION OF THE MECHANIZED FASTENERS, including a base, a ceiling with a visor, a water stand, a section moving cylinder connected to the base and a base for lifting the section and having a section moving cavity and a base moving cavity, and an additional 'hydraulic cylinder connected to the base and floor, And moreover, it is clear that in order to increase the reliability of the section during automatic compensation of the visor's departure from the bottom, the shift hydraulic cylinder is equipped with an additional piston that is movably mounted in the movement cavity base for pulling up the lining section, while the piston cavity of the additional hydraulic cylinder is in communication with the hydro-cavity. a shift cylinder located between the additional piston and the end of the hydraulic cylinder. .. „1224409>