SU1465586A1 - Arrangement for supporting mine workings in stoping work influence zone - Google Patents

Abstract

The invention relates to the mining industry and m. used in the development of gently sloping coal seams. The purpose of the invention is to increase the reliability of fastening the interface of paired lavas and reducing the laboriousness of movement when working in paired lavas. A device for maintaining the mine workings is made in the air of separate hydraulic racks (HS) 1, installed in two rows and joined by holders (D) 2 with the possibility of turning HS I into the bucket. in the inlet from one row to another; - D 2 is made of separate elements, each of which has an upper 3 and lower 4 supports under HS 1. Supports 3 and 4 have turning rings (PC) 5 with external and internal consoles 6 and 7. Consoles 6 and 7 of middle neighboring HS I are connected by a hinge 8. In PC 5, the lower support 4 has holes, 9 for spring-loaded rods 10 and P, having check valves at one of the ends 13. To ensure control of the unloading process of HS 1 during their movement, when turning on a curvilinear section, the contact surface of the inner casing 7 with the I 1 rod is filled with a variable profile. Unloading HS I tfi shifting is due to the choice of the gap. between PC 5 and the bottom support 4 and the simultaneous increase of this gap in the place of stem installation between PC 5 and the bottom support 4. This causes the movement of the rod 10 under the action of the spring 1 2 and the opening of the non-return valve 13. 6 Il. about the joint venture about 01 sd 00

Description

one

The invention relates to the mining industry and can be used in the development of gently sloping coal seams.

The purpose of the invention is to increase the reliability of mounting the interface of paired lavas and reducing the labor intensity of its movement when working in paired lavas.

FIG. Figure 1 shows a device for maintaining the mine workings and at the location of the pit in one line, a general air condition; in fig. 2 section A-A in FIG. one; in fig. 3 is a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. 1; FIG. 5 - cross section dd on flash. four;; FIG. 6 shows the device when one part of the slab is ahead of the other.

The device for supporting mine workings is made in the form of individual hydraulic columns G, arranged in two rows and joined by holders 2. The latter are made of separate elements, each of which wears the upper 3 and lower 4 supports for the hydraulic rack 1 Support 3 and 4 are equipped with swivel rings 5, each of which has an outer ring with a console 6 and an inner ring with a console 7. Console 6 and 7 near the standing middle hydraulics 1 are connected by a hinge 8.

Outer holder with console 6 mounted pivotally relative to the upper 3 and lower 4 supports. The inner race with the console 7 gsovorotna relative to its place of installation in the rotary ring 5 on the top 3 and bottom 4 supports.

In the rotary ring 5 of the lower support 4 and in the outer cage there are two holes 9, respectively, for the rods 1 O and 1 I. One: the end of the stem 1 O is installed in the gap between the rotary ring 5 and the lower support 4, the end of the stem 11 is installed in the gap between the rotary ring 5 and the inner race with the console 7, and the opposite end of the rods 1 O and 1 1 is spring loaded 1 2 and provided with non-return valve 13. The upper 3 and lower 4 supports of each end hydraulic section of the device section 14 are connected to end lateral sections 15 of the mechanized support of paired lavas, including lateral conveyors

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16 and the main sections 17 of the support, located on both sides of the device for supporting the mine workings in the left J 8 and the right 19 parts of the clearing face. The end sections 15 of the mechanized roof supports are equipped with a sliding console 20, overlapping 21, a base 22, hydraulic posts 23 installed between the console 20 and a base 22, as well as a base of -24 under which ceiling 22 is installed. The mobile console 20 is connected to 15 overlapping 21 by a hydraulic jack 26, and the base 22 to the lateral conveyor 16 is connected by a hydraulic jack 27. In turn, the base 22 and the intake base 24 of the end section 15 of the mechanized lining are connected by a hydraulic jack 28.

To provide control over the unloading process of the hydraulic rails 1 during their movement, when turning on the curvilinear section, the contact surface of the inner yoke with the rod 11 is made with a variable profile.

A device for supporting mine workings can operate in two modes.

The first mode occurs when left 18 and right 19 of the bottom side form one straight line. In this case, the device for maintaining the mining workings is located between the end sections 15. The total length (number of hydraulic chambers I) of the device determines the possible length of the advance of one part of the bottom by another part. Hydraulics i of the end portion of the Disconnect are connected to the base 22 and the sliding console 20 end face sections 15 of the paired lavas through the adjustment jacks 29. 5 In the course of coal extraction by a shearer (conventionally not shown), the coal band is removed simultaneously in the left 18 and right 19 parts of the clearing. Coal enters the main conveyors 16, which transport coal in the direction of the arrows to the transport workings (conventionally not shown),

5After removing the coal strip, the lime sections 1.7, as well as the end sections 15 of the mechanized support, are moved in a limestone manner. Before moving the end

sections 15 remove the thrust from the hydraulic racks 23 between the movable console 20 and the base 22 of the end section 15 of the mechanized support and the stand 1 of the end section 14. When the hydraulic jacks 26 and 28 are turned on, the advances of the end section 15 of the mechanized support support move the sliding console 20 of the cover 21 and the bases 22 of the end section 15 of the mechanized support and the automatic unloading of the subsequent hydraulic legs 1 of the device for supporting the mine workings and their movement. The automatic unloading of hydraulic posts 1 when moving on the straight line section is solved by choosing a gap between the rotary ring 5 and the lower support 4 and simultaneously increasing the same gap in the installation location of the 1 O rod between the rotary ring 5 and the lower support 4. This results to the movement of the rod 10 under the action of the spring 12 and the opening of the check valve 13. Upon completion of the work of the hydraulic jacks 26 and 28, the installation of the hydraulic systems 1 in the position with a uniform gap between the lower support 4 and the rotary ring 5 in each row is carried out hydrocrat 29 adjustments. The control of the latter is carried out from the drain outlets of the check valves 1 3 that are connected in series to a single line and are installed between the rotary ring 5 and the lower support 4. In a uniform way, the choice of gaps between the lower support 4 and the rotary ring 5 also solves the problem of controlling the entire device as in in the direction of the bottom, and in the opposite direction. Then, operations of spreading of the girder racks 23 are carried out together with the racks of the I device for supporting the mine workings.

After that, shifting of the intake base 24 of the end section 15 of the mechanized support is carried out by first removing the thrust from the hydraulic posts 25 and turning on the hydraulic jacks 26 and 28. The system is ready to remove the next coal chips and the cycle repeats.

1The second mode of operation is carried out when one part of the slab is ahead of the other. In this case, the operations of excavation and transportation of coal, shifting of the main sections 17 and end sections 15 of the mechanized support are carried out in the same way as at the position of the bottom in one line. The feature of the device for maintaining the mine workings in this case is that the operation of the check valve 13, installed between the rotary ring 5 and the inner race with the console 7, is controlled by the console. At the same time, due to the implementation of the surface of the cage with a variable profile, the movement and the movement of the rod II occur, therefore, the opening and closing of the check valve 13 occurs.

The row of hydraulic legs 1 of the device on the end sections 15 of the non-movable part of the bottom remains under thrust, thereby creating the condition for creating a temporary center of rotation of the hydraulic legs on the curved section on the side of the movable part of the bottom.

Claims (1)

Formula izob R. shadow A device for maintaining mine workings in the zone of influence of sewage works, containing two hydraulically mounted supports arranged in two rows and successively interconnected with each other, with the aim of increasing their reliability fastening, mating zone of paired lavas and reducing the laboriousness of its movement when working in paired lavas, the holder of each hydraulic post is equipped with spring-loaded rods and non-return valves and is made of upper and lower supports rack, rotary rings installed with a gap on the upper and lower supports, internal clips with surfaces of variable profile and consoles and external clips with consoles installed with the possibility of rotation relative to the upper and lower supports, while in the rotary ring of the lower support and There are holes in the outer cage, in which spring-loaded rods are placed with the ability to interact with check valves, one of which is mounted with the possibility of 514655866 the lower support, the other with the profile, are interconnected, and the extreme hydraulic surface of the inner cage, the rosters are equipped with jacks of the inner and outer casing of the offset for connection to the end of the lavo-medium adjacent rHqpoctoeK hinged sections of paired lavas.  26 year 25 Cn / i "IVf h. i- a i a t O 1 o , 7 fjsas.t ZG 7. 2 4 20 70 ABOUT vO Jc r 27 77 26 26 22 28 28.298 6 is 22 28 8 Srig.: 5 A-A  3 6-6 : i 23 3 29 2S 26 (rig 5 . I