SU1446332A1 - Power support - Google Patents

Description

The invention relates to mining and can be used in the development of reservoir minerals of high strength using the drilling and blasting method.

The purpose of the invention is to increase the reliability of the support when working in conditions of troubled hypsometry to |

FIG. 1 shows a mechanized roof support section prepared by JC for lava blasting, side view iia of FIG. 2 shows a section A-A in FIG. on fig.Z - section BB in figure 1 | in fig. 4 — node I in FIG. 1, a longitudinal section through a transitional suspension element with a shock absorber; in FIG. 3, node II in FIG. 1, a longitudinal section through a sliding support of a turn hydraulic cylinder with an oval hole.

The mechanized lining contains sections 1 (Fig. 1) of the first and second types, moving in a staggered order, including upper to 2 with hydraulics 3, a displacement mechanism in the form of hydraulic cylinders 4, hinged in brackets 5 of the upper 2 of its section and in similar brackets 5, the top of the next section of the support.

A swiveling protective device with a fixed upper 8 and a movable lower 9 frame is attached to the upper 2 through the transition element 6 with the hinge 7. The fixed upper frame 8 is pivotally fixed on the transition element 6 by the axis 10 and has on the inner surface two brackets 11,

to which with the help of fingers 12 priso

united cylinder lugs hydraulic jacks 13 turns.

The hydraulic jack rod 13 through the slider 14 has an oval hole 15, through the support bracket 16 and the pin 17 with the axis 18 is pivotally connected with the top 2 sections of the support (Fig. 3). The support bracket 16 is rigidly fixed to the top ke 2,

In the fixed frame 8 fixed upper shield 1.9. A lower shield 20 is attached to the lower frame 9 by means of a conventional bolted joint.

Into the upper shield 19, fingers 21 are welded in with fasteners 22 attached thereto. They enter cones 23 on frame 8. Holding and returning shield 19 to its place. After its departure from frame 8 is carried out by a spring 24,

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the tension of which is regulated by the nut 25.

The lower movable frame 9 of the protective device can be moved up and down along the telescopic tubular upper fixed 27 and lower movable 2B rails with the help of a hydraulic jack 26 of the sliding frame (Fig. 3).

The shock load from the blasted rock mass is perceived by the shields 19 and 20 and transmitted through the longitudinal supports 29 by the telescopic tubular guides 27 and 28, thereby preventing the possibility of transferring the shock load to the body of the expansion jack 26. Shields 19 and 20 on the side planes carry dual rubber aprons 30 and 31, covering the gaps between the shields of adjacent lining sections.

Impact shock from the explosion is transmitted through the protective device: the lower end of the frame 9 to the working soil, the upper end of the frame 8 to the upper to 2 sections of the lining through the movable transition element 6 (Figures 2 and 4). The movable transition element 6 of the suspension consists of a frame 32 and an axle 33. In the case of the transition element 6 there is a double conical sleeve 34, through which axis 33 passes, resting with the tail end on the support 35 in the top 2, and the front end on the nut 36, serving to pre-compress the elastic element 37, perceiving the shock load from the blast wave transmitted to the top to 2 sections of the lining by a protective device.

The suspension of the barrier device on the movable element allows complete overlapping of the blasting zone not only in gentle formations, but also in inclined ones. At the same time, the presence of rubber apron 30 and 31, which does not hinder the passage and damping of the blast wave, at the same time, reliably protects the working space of the lining against the penetration of the rock mass.

The rigid dimensions of the protective shields are less than the installation pitch of the lining section by the size of the protrusion of the rubber aprons, which overlap each other. This guarantees against the entry of shields of adjacent sections to support each other and their deformation.

Mechanized lining works as follows.

Before the explosive blasting of mineral resources, the protective device of each section of the support is distributed between the soil and the top (position III in Fig. 1).

After blasting, the movable lower frame 9 of the protective device with the lower shield 20 with the help of the hydraulic jack 26 the sliding frame along the tubular guides 27 of the upper frame and the tubular guides 28 of the lower frame 9 rises. .

In the gap formed by the barrier device and the downhole conveyor, the loosened forge is fed to the downhole conveyor. At the same time

These operations, as well as the inclusion in the operation of one or several barrier devices of the support sections, regulate the amount of mineral loosened mass fed to the conveyor.

After the self-loading of the loosened mass of the mineral, broken off by the explosion, and the loading of a part of its combine lining section, together with the conveyor, are moved forward to the schag of one shifting lining (0.63 m).

After the end of the stripping, the fence is moved back to 0.63 m, the barrier devices are installed in a horizontal position (figure 1, position V),

The driver supports with the help of a hydrojack, JQ drilling of holes, the installation of fence 13 turns begins to change the position of the barrier device from inclined to vertical (figure 1, position IV).

tel devices in the initial position (inclined), the loading of bore-holes and blasting in a certain area of the bottom.

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Drilling drills, setting protective devices to their initial position (inclined), loading holes and blasting in a certain area of the bottom.

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Claims (3)

1. MECHANIZED FASTENERS, containing sections, each of which has an upper, hydraulic stands installed under it, a sliding device on the obstructed side, a pivotally mounted downhole protective device with a transitional suspension element mounted respectively on the upper and movable frames, a swing mechanism with hydraulic jacks mounted on supporting brackets of the upper platform, characterized in that, in order to increase the reliability of the support in the conditions of unstable formation hypsometry, the transitional suspension element is made in the form e frame, freely fixed by the attachment unit under the overlap from the side of the bottom with the possibility of axial movement and rotation in a vertical plane on an axis with a shock absorber mounted on the top and located perpendicular to the axis of the hinge of the suspension of the downhole fence. 2. Fix the pop. ^ characterized in that each hydraulic jack of the rotation mechanism is equipped with a slider made with an oval hole and pivotally connected to the hydraulic jack, and the support arms are made in the form of a pipe with a finger, the finger interacting with the oval hole of the slider. 3. Fix the pop. ^ distinguishing with the fact that the upper shield is fixed to the frame with the help of a spring-loaded finger and is equipped with a latch, (/> mounted perpendicular to the shield, while in the upper frame there is a hole for the finger and a slot for the latch.