RU2188954C2 - Method of provision of support unit side stability, device for method embodiment, mechanism for covering of spans between support units - Google Patents

Abstract

FIELD: mining industry; stoping of coal deposits with use of complexes with powered hydraulic supports. SUBSTANCE: method includes correction of possible deflection of support unit by support and repulsion from roofing of neighboring support unit located on side of actual deflection. Support unit with unstable position is pulled up to roofing of neighboring support unit located on side opposite to actual deflection. Device for provision of side stability of support unit includes roofing of support unit, extensible side member with vertical and horizontal sheets and side jacks. Body of support unit roofing has bracket located for engagement with back surface of vertical sheet of neighboring support unit side member with retraction of side jack of neighboring support unit. Mechanism for covering spans between support units includes units with roofings and guards with extensible side members having vertical side member sheet, horizontal sheet covering span and guides. Mechanism has flexible fasteners secured to roofing bodies or guards and located for flexible engagement with back surfaces of vertical sheets of extensible side members of neighboring support units. EFFECT: simplified design, higher operating reliability. 3 cl, 6 dwg

Description

 The invention relates to the mining industry, to a mining excavation of coal deposits using complexes with mechanized hydraulic supports.

 There is a method of ensuring lateral stability and a mechanism for restoring sections of the supports M87DN of the Druzhkovsky Plant (1) - (Development of equipment for underground mining of coal, potash and manganese ores, under the editorship of V.N. Khorin. M .: Nedra, pp. 151, 152, fig. 58).

 The disadvantage of this method and the lever-hydraulic mechanism, which rests on the adjacent base of the lining, is the insignificant effort to restore the sections by increasing the supporting width of the section by about two times and the inability to use this method and device for high-power formations.

There is a known type of support M142 and M144 for formations of high power up to 5 m, which was first tested on formations up to 10 ^o fall (2) - (A.A. Orlov et al. Fixing and control of the roof in complex mechanized faces. M: Nedra, 1993, p. 250, 251, Fig. 9.3). In fact, the method of straightening this lining, which is the prototype, in case of loss of stability of individual sections, is a method of pushing its overlap from the adjacent floor, and the device for its implementation are retractable sides with hydraulic jacks of their extension and guide rolling rods for the support and kinematics of the extension of the sides, each of which has vertical side sheets widened for contact with the rigid side of the adjacent section, and horizontal sheets to overlap the intersectional gap.

 The disadvantage of the prototype method of ensuring lateral stability of the sections by adjusting possible deviations due to repulsion from the section located on the tactical deviation side is the lack of reliability of the neighbor, who has a significant likelihood of indiscrimination after recent movement, remoteness due to soil hypsometry or simply the absence of a roof (probability of order 10%).

 The objective of the invention is to remedy these disadvantages and increase the reliability and likelihood of recovering sections with deviations.

 This problem is solved in that according to the method, which includes adjusting the possible deviation of the sections by supporting and pushing it away from the overlapping of the neighboring section located on the side of the actual deviation, in case of unreliability of the support or its absence, the section is pulled to overlap another neighboring section located with opposite side.

 The disadvantage of the device for straightening the section used in the prototype is the impossibility of supporting both adjacent sections due to the fact that the mechanism of interaction with the adjacent seksha includes a board with guides and an on-board jack, which is used only for sliding, because when the jack is reduced, the interaction with the neighboring section ceases.

 The objective of the invention is to eliminate this drawback and ensure two-way interaction of all adjacent sections, reducing the likelihood of failure of the support by at least an order of magnitude, because the probability of an event when the conditional probability of failure of the second support section under the condition of failure of the first is the product of two probabilities (ie,%, 0.1 • 0.1 = 0.01).

 This problem is solved in that the device for providing the method, including overlapping the lining section, a retractable side with a vertical and horizontal sheet and an onboard jack (s) of the side extension, is designed so that the overlap body is provided with a bracket interacting with the back surface of the vertical side of the side board of the adjacent sections in the direction of pulling up this section and the adjacent one when reducing the side (side) jacks of the neighboring section.

 Known mechanisms for overlapping intersectional gaps for low-power roof supports of the type M137 and M138 with retractable overlapping sides, jacks and rails for extending the sides, providing overlap of intersectional gaps on the roof and preventing small items from spilling out of the roof under the lining - (2), p. 183, 218, 234, Fig. 9.1 and 9.2).

 The drawback of drawbacks for low formation thicknesses is the unnecessary complexity due to the use of one or more side jacks to extend the gaps along the roof, which also require hydraulic wiring and low-power control operations, where the lateral stability of the lining is fully ensured by a good ratio section width to its height.

 The objective of the invention is to remedy this drawback and simplify the design.

 This problem is solved by the fact that the mechanism of overlapping intersectional gaps, including sections with ceilings and fences with retractable sides having a vertical side sheet, a horizontal sheet overlapping the gap and the guides, is made in such a way that it is equipped with elastic clips mounted on the buildings of the floors, interacting with the reverse surfaces of the vertical sheets of the retractable sides of adjacent sections in the direction of pulling the retractable side until the intersection gap is selected without using the side out jacks.

 In FIG. 1 shows a general view of the lining section for high power, side view; in FIG. 2 - view from the bottom; in FIG. 3 is a plan view. In FIG. 4 shows a ceiling with a jackless bead extension mechanism for low power roof supports, side view; in fig. 5 is a view from the bottom; in FIG. 6 is a plan view.

 The support for high power consists of sections, including ceiling 1, guard 2, base 3 of strut 4 and motor jacks 5. Each ceiling and guard have a retractable side 6 with vertical 7 and horizontal 8 sheet and side jacks 9, providing a side extension for squeezing from adjacent section or abbreviation for retracting the side and tightening the adjacent section, for which there is a bracket 10 on the housing of the neighboring section mounted on the body 11 of the overlap (fence), the console 12 of the bracket 10 interacts with the inner surface vertical sheet 7 retractable bead 6.

 The device operates as follows. If, when pulling out one section (the middle one in Figs. 1-3), it loses lateral stability and deviates, for example, in the direction of arrow 13, then the driver turns on the jack of his section 9 to extend, extends the side and pushes away from the adjacent section from the side of the deviation. At the same time, there is some likelihood that this neighboring section is not crushed or is too far or completely absent (the edge of the lining). The probability of poor support is approximately 10%.

 In this case, the support engineer due to the device with brackets 10 can turn on the jack 9 of another adjacent section, the opposite of the deviation for reduction. This will lead to the cleaning of the side, which, through the inner surface of the vertical sheet, acts on the console 12 of the bracket 10 and moves the deflected section in the direction opposite to arrow 13. If the probability of non-thrust of the second section is also 10%, then according to the full probability formula, the possibility of failure of the second section, provided that the first section has already failed (conditional probability), is equal to the product of two probabilities and in this case is 0.01, or an order of magnitude less.

 The mechanism for overlapping intersection gaps for low-power formations includes overlapping 1, a retractable side 6 with a vertical sheet 7 and horizontal 8 in the absence of side jacks. The boards are pushed into the adjacent overlap, on which there is an elastic part such as a clip 15, fixed with two fingers 17 on the cheeks 18, which fix two points of the rolling pin 15 with mobility at the end 19, covering the reverse hook on the vertical side sheet of the first section with the possibility of elastic displacement as in the vertical and in the horizontal direction, which is necessary when unloading and moving the section and unevenness of the roof. At the second end of the wire (bar) paper clip there is a bent console 20, which creates a seal when twisting a section of the bar between the fingers 17 and the bend of the end 19.

 Due to this design, each section should not have hydraulic jacks to extend its side, and the degree of elastic extension does not depend on the position of its own overlap, but is determined by the position of the sidewall of the adjacent overlap, based on constant contact, eliminating the spillage of fines from the roof of the formation.

Claims (3)

 1. A method of providing lateral stability of the lining section, including adjusting the possible deviation of the lining by supporting and repelling from the overlap of the adjacent section located on the side of the actual deviation, characterized in that the lining section is pulled in an unstable position to overlap the neighboring section located with the opposite of the actual side rejection.  2. A device for providing lateral stability of the lining section, including overlapping of the lining section, a retractable board with a vertical and horizontal sheet and side jacks, characterized in that the casing of the overlapping section of the lining is equipped with a bracket located to interact with the back surface of the vertical sheet of the side of the adjacent lining section while reducing the side jack of the adjacent section.  3. The mechanism of overlapping intersectional gaps, including sections with ceilings and fences with retractable sides, having a vertical side sheet and a horizontal sheet overlapping the gap, characterized in that it is equipped with elastic clips attached to the buildings of the floors or fences, located with the possibility of elastic interaction with reverse surfaces of vertical sheets of retractable sides of adjacent sections.

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