Self-adaptive stabilizing device for multi-coal-seam large-face-width gob-side entry retaining

Abstract

The utility model relates to a multi-coal seam large-face wide gob-side entry retaining self-adaptive stabilizing device, which aims to solve the technical problems that the length of a current reinforcing plate is fixed, the supporting position cannot be adjusted according to the actual coal roadway condition, and limitation exists, and comprises a supporting arch strip, a connecting structure and a reinforcing structure, the connecting structures are arranged on the connecting sections on the inner sides of the supporting arch strips; the reinforcing structures are used for connecting the two corresponding connecting structures on every two supporting arch bars; the reinforcing structure comprises a connecting plate; the outer ends of the two connecting plates are connected with the two corresponding connecting structures on every two supporting arch bars correspondingly. Two extending plates A are symmetrically and fixedly arranged at the inner end of one connecting plate, an extending plate B is fixedly arranged in the middle of the inner end of the other connecting plate, the extending plate B is inserted between the two extending plates A, and the extending plate B and the two extending plates A are fixedly connected through bolts C and nuts C. The distance between the two connecting plates can be adjusted; and the distance between every two supporting arch bars can be automatically adjusted according to actual conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal seam supporting technical field especially relates to a kind of self-adapting stabilizing device of large face width along empty roadway in multiple coal seams. BACKGROUND

[0002] Plant remains are transformed into layered solid combustible mineral products by complex biochemical action and geological action, forming coal seams.

[0003] For the coal roadway mined in multiple coal seams, in order to maintain the stability of the coal roadway, a roadway support device is set up to maintain the stability of the roadway. The general roadway support device is arched to support the coal roadway, and the supports are connected by reinforcing plates. However, the length of the reinforcing plate is fixed and cannot adjust the position of the support according to the actual coal roadway conditions, which has limitations.

[0004] In view of this, we propose a kind of self-adapting stabilizing device of large face width along empty roadway in multiple coal seams. UTILITY MODEL CONTENT

[0005] The utility model aims at overcoming the deficiencies of the prior art, adapting to the actual needs, and providing a kind of self-adapting stabilizing device of large face width along empty roadway in multiple coal seams to solve the technical problem that the length of the reinforcing plate is fixed and cannot adjust the position of the support according to the actual coal roadway conditions, which has limitations.

[0006] In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows: a kind of self-adapting stabilizing device of large face width along empty roadway in multiple coal seams is designed, including support arch, connecting structure and reinforcing structure.

[0007] A plurality of support arches;

[0008] The connecting structure is arranged on the inner side connecting section of the support arch;

[0009] The reinforcing structure is used for connecting the corresponding two connecting structures on the two support arches;

[0010] The reinforcing structure includes a connecting plate;

[0011] The outer ends of the two connecting plates are respectively connected with the corresponding two connecting structures on the two support arches;

[0012] Among them, the inner end of one connecting plate is symmetrically fixed with two extension plates A, and the inner end of the other connecting plate is fixed with an extension plate B in the middle, the extension plate B is inserted between the two extension plates A, and the extension plate B and the two extension plates A are fixedly connected by bolts C and nuts C.

[0013] Preferably, the supporting arch strip comprises an inner arch strip and an outer arch strip, the inner arch strip and the outer arch strip are integrally formed, and the width of the inner arch strip is smaller than the width of the outer arch strip.

[0014] Preferably, the connecting structure comprises a U-shaped clamping block.

[0015] The U-shaped clamping block is clamped on the inner arch strip.

[0016] The U-shaped clamping block is fixedly connected with the inner arch strip through a bolt A and a nut A.

[0017] The U-shaped clamping block is fixedly provided with a plug sleeve on each side, the plug sleeve is in plug-in cooperation with the outer end of the connecting plate, and the plug sleeve and the outer end of the connecting plate are fixedly connected through a bolt B and a nut B.

[0018] Preferably, the outer arch strip inside of the inner arch strip on each side is fixedly provided with a limiting block, the U-shaped clamping block is provided with a limiting groove at each end of the clamping side, and the limiting groove is in plug-in cooperation with the limiting block.

[0019] Compared with the prior art, the utility model has the advantages that:

[0020] 1. The utility model discloses a connecting plate, an extension plate A, an extension plate B, a bolt C and a nut C are arranged, the distance between the two connecting plates can be adjusted, the distance between the two supporting arch strips can be adjusted according to actual conditions, the length of the reinforcing plate is fixed, the position of the support cannot be adjusted according to the actual coal roadway condition, and the problem of limitation is solved.

[0021] 2. The utility model discloses a U-shaped clamping block, a bolt B and a nut B are arranged, and the U-shaped clamping block is fixed and connected through clamping, which is convenient to install.

[0022] 3. The utility model discloses a limiting groove and a limiting block, which are arranged, and the U-shaped clamping block is positioned through the butt joint of the limiting groove and the limiting block when installing the U-shaped clamping block, which is convenient for subsequent installation and fixation. DETAILED DESCRIPTION

[0023] Fig. 1 It is a whole structure schematic view of the utility model;

[0024] Fig. 2 It is a connecting structure schematic view of the utility model;

[0025] Fig. 3 It is a reinforcing structure schematic view of the utility model;

[0026] Fig. 4 It is an extension plate A and an extension plate B connecting structure schematic view of the utility model;

[0027] In the figure: 1, support arch strip; 2, connecting structure; 3, reinforcing structure;

[0028] 101, inner arch strip; 102, outer arch strip;

[0029] 201, U-shaped clamping block; 202, limiting block; 203, bolt A; 204, nut A; 205, bushing;

[0030] 2011, limiting groove;

[0031] 301, connecting plate; 302, bolt B; 303, nut B; 304, extension plate A; 305, extension plate B; 306, bolt C; 307, nut C. DETAILED DESCRIPTION

[0032] The utility model is further illustrated below in combination with the drawings and examples:

[0033] Example 1: a kind of multi-coal seam large face width gob-side entry retaining self-adapting stabilizing device, referring to Figs. 1 to 4 , including support arch strip 1, connecting structure 2 and reinforcing structure 3;Several support arch strips 1;Connecting structure 2 is arranged in the inner side connecting section of support arch strip 1;Reinforcing structure 3 is used to connect corresponding two connecting structures 2 on two support arch strips 1;

[0034] Reinforcing structure 3 includes connecting plate 301;Two connecting plate 301 outer ends are respectively connected with corresponding two connecting structures 2 on two support arch strips 1;Wherein, one connecting plate 301 inner end is symmetrically fixed with two extension plates A 304, and the other connecting plate 301 inner end is fixed with extension plate B 305 in the middle, extension plate B 305 is inserted between two extension plates A 304, extension plate B 305 and two extension plates A 304 are fixedly connected by bolt C 306 and nut C 307, bolt C 306 passes through the hole on two extension plates A 304 and corresponding one of a plurality of holes on extension plate B 305, one end of bolt C 306 is screwed on nut C 307.

[0035] The utility model discloses a connecting plate 301, extension plate A 304, extension plate B 305, bolt C 306 and nut C 307 are set up, and the distance between two connecting plates 301 can be adjusted, so that the distance between two support arch strips 1 can be adjusted according to actual conditions, which has the advantages of self-adjustment, solves the problem that the length of reinforcing plate is fixed and the position of support cannot be adjusted according to the actual coal roadway condition, and has limitations.

[0036] Specifically, support arch strip 1 includes inner arch strip 101 and outer arch strip 102, inner arch strip 101 and outer arch strip 102 are integrally formed, and the width of inner arch strip 101 is less than the width of outer arch strip 102;The outer wall of outer arch strip 102 contacts coal seam, and the contact support area is larger.

[0037] Further, the connecting structure 2 comprises a U-shaped clamping block 201;

[0038] The U-shaped clamping block 201 is clamped on the inner arch strip 101; wherein the U-shaped clamping block 201 is fixedly connected with the inner arch strip 101 through a bolt A 203 and a nut A 204, the bolt A 203 passes through the holes on the U-shaped clamping block 201 and the inner arch strip 101, and one end of the bolt A 203 is screwed with the nut A 204. Wherein the U-shaped clamping block 201 is fixedly provided with an insertion sleeve 205 on both sides, respectively, the insertion sleeve 205 is inserted and matched with the outer end of the connecting plate 301, the insertion sleeve 205 and the outer end of the connecting plate 301 are fixedly connected through a bolt B 302 and a nut B 303, the bolt B 302 passes through the holes of the insertion sleeve 205 and the outer end of the connecting plate 301, and one end of the bolt B 302 is screwed with the nut B 303.

[0039] The utility model discloses a U-shaped clamping block 201, bolt B 302 and nut B 303 are set up, have the advantage that through the mode of clamping and connecting, it is convenient to install.

[0040] Further, the inner arch strip 101 is fixedly provided with a limiting block 202 on the inner side of the outer arch strip 102 on both sides, respectively, the U-shaped clamping block 201 is provided with a limiting slot 2011 at both ends of the clamping side, respectively, and the limiting slot 2011 is inserted and matched with the limiting block 202.

[0041] The utility model discloses a limiting slot 2011 and limiting block 202 are set up, have the advantage that when installing the U-shaped clamping block 201, the U-shaped clamping block 201 is positioned through the butt joint of the limiting slot 2011 and the limiting block 202, which is convenient for subsequent installation and fixation.

[0042] Working principle: use the device of the utility model, support arch strip 1 is supported in the coal roadway, U-shaped clamping block 201 is clamped on inner arch strip 101, limiting slot 2011 and limiting block 202 butt joint, bolt A 203 passes through the hole on U-shaped clamping block 201 and inner arch strip 101, and one end of bolt A 203 is screwed with nut A 204, the outer end of connecting plate 301 is inserted into insertion sleeve 205, bolt B 302 passes through the hole of insertion sleeve 205 and the outer end of connecting plate 301, and one end of bolt B 302 is screwed with nut B 303, according to actual condition, adjust the distance between two connecting plates 301, bolt C 306 passes through the hole on two extension plates A 304 and the corresponding one of the plurality of holes on extension plate B 305, and one end of bolt C 306 is screwed with nut C 307, and installation is completed.

[0043] The utility model discloses a preferable embodiment, but is not limited to this, ordinary skilled in the art, easily understand the spirit of the utility model according to the above embodiment, and make different induction and change, but as long as not deviating from the spirit of the utility model, all are within the protection scope of the utility model.

Claims

1. A multi-coal seam large face width gob-side entry retaining self-adaptive stabilizing device, characterized in that, The utility model relates to a supporting arch (1) and connecting structure (2) and reinforcing structure (3) and connecting plate (301) and extension plate A (304) and extension plate B (305) and bolt C (306) and nut C (307) and U-shaped clamping block (201) and bolt A (203) and nut A (204) and plug-in sleeve (205) and bolt B (302) and nut B (303) and limiting block (202) and limiting slot (2011) are provided. It comprises: A plurality of supporting arches (1); Connecting structure (2) arranged in the inner connecting section of the supporting arch (1); Reinforcing structure (3) for connecting two corresponding connecting structures (2) on each supporting arch (1); The reinforcing structure (3) comprises: Two connecting plates (301), the outer ends of which are respectively connected to two corresponding connecting structures (2) on each supporting arch (1); 2. The self-adaptive stable device for gob-side entry retaining in a multi-coal seam large face width according to claim 1, characterized in that, Among them, one of the connecting plates (301) is symmetrically provided with two extension plates A (304) at the inner end, and the other connecting plate (301) is provided with an extension plate B (305) at the middle of the inner end, the extension plate B (305) is inserted between the two extension plates A (304), and the extension plate B (305) and the two extension plates A (304) are fixedly connected by a bolt C (306) and a nut C (307).

3. The self-adaptive stable device for gob-side entry retaining in a multi-coal seam large face width according to claim 2, characterized in that, The supporting arch (1) comprises an inner arch (101) and an outer arch (102), the inner arch (101) and the outer arch (102) are integrally formed, and the width of the inner arch (101) is smaller than the width of the outer arch (102). The connecting structure (2) comprises: A U-shaped clamping block (201) clamped on the inner arch (101); Among them, the U-shaped clamping block (201) is fixedly connected with the inner arch (101) by a bolt A (203) and a nut A (204); 4. The self-adaptive stable device for gob-side entry retaining in a multi-coal seam large face width according to claim 3, characterized in that, Among them, the U-shaped clamping block (201) is respectively provided with a plug-in sleeve (205) on both sides, the plug-in sleeve (205) is inserted and matched with the outer end of the connecting plate (301), and the plug-in sleeve (205) and the outer end of the connecting plate (301) are fixedly connected by a bolt B (302) and a nut B (303). The inner side of the outer arch (102) on both sides of the inner arch (101) is respectively provided with a limiting block (202), and the two ends of the clamping side of the U-shaped clamping block (201) are respectively provided with a limiting slot (2011), and the limiting slot (2011) is inserted and matched with the limiting block (202).

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