SU1377401A1 - Power support unit - Google Patents

Description

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The invention relates to a technique for the extraction of minerals by the underground method, namely, to mechanized fortifications of the mining faces of coal mines.

The purpose of the invention is to increase the efficiency of the support section on thin and medium thickness inclined seams.

Figure 1 shows the proposed device; figure 2 is the same, top view; on fig.Z - section aa on fig, 1; figure 4 - section bb on. figure 3.

The mechanized support section contains a hydraulic post. 1 and overlap 2, which through the mechanism of longitudinal stability is connected to the base 4 of FIG.). In the base 4, the figured side grooves 5, covering the figured spring levers 6 (FIG. 3), are symmetrically shaped to its longitudinal axis, wired, and they are elements of a damping device.

The spring arms 6 are made Z-about of different shapes and are fixed at one end by rollers 7 in the base 4, and contact the free end through bushings 8 with the trunnions 9 of the hydraulic legs 1.

In the sleeves 8, grooves 10 are made at one end, into which the free ends of the arms 6 enter. On the other end there are shaped surfaces 11 in contact with the trunnions 9 of the hydraulic legs 1. The trunnions 9 of the hydraulic legs are filled in the form of a truncated cone. Figured surfaces 11 of the sleeves 8 are made in the section of the C-shaped, with a variable radius along the axis of the sleeve corresponding to the conical surface of the pins 9.

During the movement of the support section when it is working on inclined fall formations, the unloaded hydrocall 1 tends to tilt downward

reservoir (figure 2). At the same time, the spring lever 6 fixed by the roller 7 through the sleeve 8, the C-shaped surface 11 of which contacts the tapered pin 9, acts on the pins of the stand and ensures its normal position relative to the base (Figures 2 and 3).

When unloading and thrusting a hydrostatic-- | Ki, its angle of inclination relative to the longitudinal axis of the section changes (FIG. 3). The rotation of the hydraulic column is carried out relative to its trunnions 9 due to their slippage in the C-shaped figured surfaces of the P bushes 8. Thus, regardless of the angle of rotation of the hydraulic column, it is prevented from tilting along the dip of the formation;

The angle of on / tilt of the hydraulic post relative to the longitudinal axis (FIG. 4), i.e. the longitudinal stability of the section, provides the mechanism 3 longitudinal stability (figure 1).

In the working state, when the roof is displaced, the spring arms 6 elastically deform. When the section is unloaded, the energy of the elastically deformed arms is restored to the original position.

The suspension of the hydrostatic column 1 is ensured by eliminating the gaps between the tapered pins 9, sleeves 8 and the pivotal levers 6 due to their elastic deformation when the upper ends are pressed against the shaped profile of the slots 5 of the base. The pressing of the upper ends of the spring arms 6 to the shaped profile of the grooves 5 of the base is carried out when they are fixed by rollers 7.

The execution of the trunnion trunnion 9 in the form of a truncated cone provides the greatest area of their contact with the C-shaped figured surfaces 11 in the tuloc 8.

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Claims (2)

1. The SECTION OF THE MECHANIZED FASTENERS, including the base associated with the overlapping mechanism of longitudinal stability, and a shock-absorbing device in the form of spring levers, one end fixed to the base, and the free end in contact with the hydraulic stand, characterized in that, in order to increase the efficiency of the support section on thin and medium power inclined formations, it is equipped with inserts having grooves mounted on the free ends of the levers placed in the side curly grooves, which are made in the base, when ohm liners are made with shaped surface contacting the gidrostoyki trunnions and trunnion gidrostoyki formed as a truncated cone. 2. The section according to claim 1, characterized in that the spring levers ~ are made in a Z-shape and fixed to / on the base by means of rollers. Φΐίδ. 1.