SU613120A1 - Powered roof support for steep seams - Google Patents

Description

one

The invention relates to mining, in particular to equipment for the mechanization of the excavation of minerals, and can be used in mechanized supports.

Known mechanized lining, consisting of downhole and landing sections (sets), moved movable along the front of the lining by a hydraulic advancer, made in the form of a steel case with hydraulic jacks thrust and shifting installed across its longitudinal axis

one.

Installing the mover relative to the movable section is a time-consuming operation requiring a lot of skill and experience as a support driver. Without the fate of a person, the sectional movement of such lining onto a new road cannot be made, since there are no devices limiting the progress of the advancing figure and ensuring its exact orientation relative to the sections being moved.

The closest technical solution to the invention of the known is the mechanized support for steep seams, including sections with air bellows, intersection LINKS, stops for interaction with the protrusion of the mobile device located between the stops 2.

A disadvantage of this device is the poor orientation of the mover relative to the section.

The aim of the invention is to improve the orientation of the advancing unit relative to the support sections.

This is achieved by the fact that the slide bar is made with three groups of jacks installed with OPPORTUNITY of interaction with the stops fixed in the front and rear parts of the support sections, while the extreme groups of jacks are used to fix the slide bar between the extreme sections and the middle ones for shifting intermediate section. FIG. 1 shows the lining with the advances (in the lower part of the lava); in fig. 2 is a section A-A in FIG. one.

Mechanized roof supports consist of separate sections 1, each of which includes a base 2, an overlap 3, and a pneumatic rack 4.

In the working space of the support there is a MOBILE ALONG the front of the support by means of a thrusting organ, for example, a rope 5, an Advancer 6.

Intersectional links 14 and 15 with oppositely spaced ledges 16 and 17 are fixed at one end by hinges 18, 19,

their second end is connected to the section body by means of sylphols 20 and 21. On the bottom side of the sections, the guide beam 22 of the combine is hinged. The bottom (base) section 23 is connected to the overlying additional links - jacks 24 and 25. The section body has a front wall (support) 26 and a rear wall (support) 27, adjustable in angle.

Works support as follows.

After the upward movement of the combine begins, the base section 23, supported by the jacks 24 and 25, under the action of the lower jack 7 of the Advancers 6 moves forward and takes the initial position for the entire support. The mobile unit 6 rests against the abutment 13 into the body of the overlying section and is fixed in the desired position by the upper jack 12.

Before starting the second section, the bellows 20 and 21 of the intersectional links 14 and 15 between the second and third sections are folded (unloaded) and allow the second section to move freely with a jack 9. Moving forward, the second section slides along the intersectional link 14 of the base section and at the expense of the ribs 16 and 17 rises by the necessary amount.

The mode of operation of the support with a lift is the main one, since all the supports in a steep fall during shifting are prone to creep. The end of the advancement of the section is determined by the abutment of the rear wall 27 of the section body into the jack 10.

After the movement has been completed and the section is fixed in the required position, the jacks 7 and 9 of the advance shaft are folded completely, and the jack 12 is partially formed and the forward shaft 6 is moved upwards by the traction body 5 until the stop 13 contacts the body of the third section. Then, the mobile unit is fixed with the jack 12 between the front wall 26 and the rear wall 27 of the fourth section and the stop of the jack 8 (without extending it) against the wall 26 of the second section.

The intersectional links between the third and fourth sections are unloaded. The section is moved

jack 9 up to the stop of the rear wall 27 of the section being moved into the jack 10. Further, all operations of the shifting cycle are repeated for each section.

In addition to the operations already described, the pairwise jacks of the explorer 7 and 8, 9 and 10, 11 and 12 are used to reset the sections (if necessary) to their original position, as well as when adjusting

the straightness of the front of the lining after the passage of the mining and geological violations of the lava. After all the sections of the support have been completely moved, the Forward 6 with the jacks 7, 8, 9, 10, 11 and 12 folded down is lowered to its original position - in the lower part of the lava and adjusted for the next cycle.

Intersectional connections 14 and 15 with bellows 20 and 21 can also be configured for parallel movement of the sections or for shifting with the lowering of the support sections.

Such an embodiment of mechanized support allows effective control of support in the plane of the formation and thereby increase the load on the face.

Claims (2)

1. USSR author's certificate No. 121410, cl. E 21 D 23/00, 1957. 2. For the number 2358229 / 22-03, cl. E 21D 23/00, 1976, according to which a decision was made to issue an author's certificate. 20 23. .five S