SU1544984A1 - Mobile entry-driving support - Google Patents

Abstract

The invention relates to the mining industry and can be used during mining operations. The goal is to increase reliability in work. Propelled lining consists of two sections, each of which includes guide beams (NB) 1 and 2, upper 3 and 4, hydraulic posts 11 and 12. The sections are connected by the shifter 7 hydraulic cylinder. The upper plates are equipped with brackets with spacers rigidly attached to them. Spacers are rigidly connected to NB 1 and 2, which, in turn, are rigidly attached to hydraulic rails 11 and 12. When unloading hydraulic rails of one of the sections, its upper arms, using their brackets, rest on the NB of an adjacent section and move along them under the influence of the hydraulic cylinder of the shifter 7 at the installation step permanent lining. The rigid connection of the tops with the NB by means of the brackets and spacers makes it possible to exclude the rotation of the frames when shifting, their misalignment during installation, which increases the reliability of the lining. 13 il.

Description

The invention relates to the mining industry and can be used when conducting a mining process.

The aim of the invention is to improve operational reliability.

Fig. 1 shows the propeller shoring support in the excavation, about 20 Longitudinal section; figure 2 - section aa in figure 1 -, fig.Z - lining with one section unzipped and moved to the step of the second section, a longitudinal section; figure 4 - section bB in fig.Z; on 25

fig.z - lining with the open section of the second section And the first section moved to the step, longitudinal section; in fig. 6 - section bb In fig.Z; in fig. 7 — node I in FIG. 4; On Fig - node II in Fig.6; in Fig. 30, a variant of a tunneling front support with a flat-panel top with sections unfolded in the development, a longitudinal section; in Fig. 10 -: The treatment of GG in Fig. 9, - in Fig. 11 - settlement DD in FIG. 9; in Fig.12 is a view 5 in Fig.9 (initial position); on ig.13 - the same, with one section unfolded in space and moved one step forward. , 40

Propelled lining consists of two sections, each of which contains guide beams 1 and 2, upper 3 and 4, and beams 1 are connected to upper 3, and beams 2 - to upper 4, respectively, by means of spacers 5 and 6 (Figs2 ). The sections are interconnected by hydrocyropy-7 shifting (Fig.1-3). Pro35

rates 5 and 6 are rigidly connected to support brackets 8 and 9, rigidly attached to the upper cams 3 and 4 (And 4). The brackets are supported on guide beams with their lower surfaces M and L (Fig. 7 and 8). Spacers 5 and 6 are rigidly attached to the guide beams 1 and 2, for example, with clamps 10. The guide beams 1 and 2 are attached to hydroracks 11

f

0 5

0 0

five

0

five

and 12. Fences 13 are attached to one of the lining sections (shown to section 2), installed with a clearance of H from the soil, which is greater than the relative vertical displacement of the sections h. In order to mount the mine workings and on curvilinear sections, guide beams 1 and 2 of the support sections are installed with a gap c (and 13), and one of the support sections is equipped with at least two drive elements, for example, hydraulic cylinders 4 interacting with the guides of the second section (drive elements not shown).

Mining mobile roof works as follows.

After mounting the lining in the detached chamber (development), the lining section with hydroracks 12 is spread into the roof of the excavation, and the other section is moved by the hydraulic cylinder 7 to the step of installing a permanent lining (Figures 1 and 3). In this case, the support brackets 8 of the unloaded section with their support surface M slide in the guide beams 1. In the forward position, the support section is spread by hydraulic rails 11, then the first support section is unloaded and moves the hydraulic cylinder 7 forward (Fig. 3) to the fixed support installation step. In this case the support brackets 9 first th section of lining its bearing surface A slide along the guide beams 2. In this forward position section raspiraets gidrostoykami lining 12. In this position the gap between the roof and the front upper generation kami support frames set puff, and voids if necessary zabutovyvayuts. At the same time, permanent support is erected behind the sinking mobile support. As the tunneling deck is pushed in, the cycle of shifting the lining and securing the output

permanent support is repeated. The presence of a barrier 13, installed on the sides of the aisle mobile lining, prevents possible rock heaps in the working area. The size of the gap from the excavation soil to the fence H is larger than the relative displacement of sections along the vertical h, which prevents the section of the support from jamming in the excavation.

Skidding mobile lining with flat girders allows for fixing workings on curved sections. This is done as follows. After shifting the unloaded section (for example, the second one), the drive elements rotate it in terms of the angle θ determined by the gap between the guide rails 1 and 2. After the second support section expands, the first support section is already unloaded and shifted turn this section. With

449846

if necessary, the cycle of rotation of the sinking mobile support is repeated.

g

Claims (1)

Invention Formula Punching movable lining, including sections consisting of a guide "Q growth rods and tops, connected by means of brackets rigidly attached to them with guide rails, overlapping and shifting hydraulic cylinder, the ends of which are hinged 15 with adjacent sections, characterized in that, in order to increase reliability in operation, the guide beams are rigidly connected to hydraulic racks, the brackets are equipped with spacers, while the spacers are rigidly attached to the guide beams, and the brackets of each section are installed with the possibility of support when moving it to guide rails 25 adjacent section. Thebes. 2 FiaM & LPTTTP-cl FIG. 6 F Fie.8 t about tv3 oS oi o oad CTi cl I Ul 4 40 oo FIEM