RU2023882C1 - Frame metal support made of special profile - Google Patents

Abstract

FIELD: mining-extractive industry. SUBSTANCE: protrusion made of special profile is mounted between capping and post which form connection unit. Bottom and flanges of special profile form top surface and lower support surface correspondingly and are made in form of cylindrical-shape protruding members; generatrices of the units are disposed in perpendicular to longitudinal axis of capping. Flanges of special profile of the protrusion are fastened to distance rectangular to form closed cavity; the distance rectangular is mounted onto top end of the post. Such a construction of connection unit provides tight caving of capping onto posts. EFFECT: improved serviceability; improved reliability of operation. 3 cl, 3 dwg

Description

 The invention relates to the mining industry and can be used for fastening single workings with aimless mining of coal seams.

 A known design of a trapezoidal mixed lining, including racks and a metal upper from a special profile with clamps fixed on its ends from brackets, slats and nuts, the upper ends of the racks are made in the form of a solid protrusion with convex surfaces.

 The purpose of the invention is to increase the manufacturability of the lining while maintaining the articulation and lateral flexibility of the lining.

 In FIG. 1 shows the lining, a general view; in FIG. 2 - node connecting the lining elements; in FIG. 3 is a view A in FIG. 2.

 The metal frame support from the special profile contains the top 1, at the ends of which clamps are fastened from brackets 2, curly strips 3, ties 4 and nuts 5, struts 6 and legs 7.

 At the upper ends of the uprights 6, rectangular spacers 8 and solid projections 9 from a section of a special profile with flanges are strengthened. In this case, the flanges of the special profile of the protrusions 9 are attached to the rectangular spacer 8 with the formation of a closed cavity 10. Each protrusion 9 includes a concave lower 11 and a convex upper 12 part of a cylindrical shape with the arrangement of their perpendicular to the longitudinal axis of the upper 1. The concave lower part 11 is made on the flanges of the special profile of the protrusion 9. The convex upper part 12 is mounted on the bottom of the special profile of the protrusion 9. The width of the upper part 12 is less than the width of the bottom of the special profile of the protrusion 9, which allows the side of the special profile of the protrusion 9 and the upper hour and 12 form a stage. In general, the contact contour of the protrusion 9 with the upper 1 defines the upper 12, lower 11 parts and side walls 13 of the special profile of the protrusion 9, while the height of the chord h of the lower 11 and upper 12 parts are equal and do not exceed one third of the thickness of the side wall of the special profile of the protrusion 9. Performing the protrusions 9 of the special profile with the upper 12 and lower 11 parts provides a tight fit of the upper 1 on the rack 6, which guarantees the operability and reliable connection of the lining elements under oblique loads.

 Racks 6 are installed close to the figured strips 3 of the clamps so that the bottom of the special profile of the rack 6 is engaged with the end surface of the figured strip 3.

 In the longitudinal direction of the frame, the supports are connected by metal curly ties 4, which are attached to the brackets 2 of the clamps.

 During lining, vertical loads are transmitted through the upper 1 simultaneously to the upper 12 and lower 11 parts of the protrusions 9, then through rectangular spacers 8 to the upper parts of the uprights 6 and then to the soil. With a lateral load, the upper end of the uprights 6 with a lateral surface 14 acts on the figured bar 3 and the clamps slip along the upper 1 into the excavation. To ensure the best operation of the lining and eliminate the possibility of occurrence of torques in the upper part of the rack 6, the centers of the special profile of the protrusion 9, the rectangular spacer 8 and the special profile of the rack 6 are placed on one vertical axis 15.

Claims (3)

 1. FRAME SPECIAL PROFILE METAL FASTENERS, including the top with clamps, brackets and nuts fixed to its ends, a stand with a solid protrusion at the end with a supporting surface in the form of a cylinder part, the forming of which is perpendicular to the longitudinal axis of the tower located across the longitudinal axis of the rack having a cross section corresponding to the profile of the upper tower, and installed close to the straps of the clamps with the possibility of interaction with them of the lateral surface of the upper ends of the uprights, characterized in that, with the aim of higher technological support for the manufacture of the support structure while maintaining articulation and lateral compliance, the support is provided with rectangular spacers, each of which is mounted on the upper ends of the uprights, and the protrusion is made of a section of a special profile with flanges, while the upper part of the protrusion has a convex shape for interaction with the upper and the lower - concave for interaction with the end face of the rack, and the upper part of the protrusion is less than the width of the protrusion of the bottom of the special profile.  2. The support according to claim 1, characterized in that the centers of gravity of the protrusion from the special profile of the rectangular spacer and the special profile of the rack are placed on one vertical axis.  3. The support according to claim 1, characterized in that the heights of the chords of the lower and upper convex parts of the protrusion are equal and do not exceed one third of the thickness of the side wall.

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