Safety supporting structure for coal mine tunnel

Abstract

The utility model relates to the technical field of coal mining, and discloses a coal mine tunnel safety supporting structure which comprises a plurality of supporting frames arranged in parallel, a metal protective net is arranged at the top of each supporting frame, each supporting frame comprises two hydraulic props, a mounting plate is fixedly connected to the top of each hydraulic prop, and each mounting plate is of an L-shaped structure. The top of the hydraulic prop is detachably connected with a supporting beam, the outer side of the hydraulic prop is sleeved with a positioning block, the positioning block is fixed to the outer side of the hydraulic prop, a through groove is formed in one end of the positioning block, a positioning column is installed on the inner side of the through groove in a penetrating mode, and a positioning frame of an n-shaped structure is movably arranged on the outer side of the positioning column. The height of the supporting beams can be adjusted through the hydraulic supporting columns, roadways with different heights can be supported, the hydraulic supporting columns are detachably connected with the supporting beams and the positioning columns, later-stage disassembly is facilitated, and the supporting device is suitable for temporary safety supporting of a coal mine; and the mounting stability of the hydraulic prop can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine mining, in particular to a safety support structure for coal mine roadways. Background Technique

[0002] In China, coal mines are mainly mined underground. A large number of roadways need to be excavated underground. Using roadway support to keep the roadway unobstructed and the surrounding rock stable is of great significance to coal mine construction and production. The basic purpose of roadway support is to relieve and reduce the movement of the surrounding rock, prevent the roadway section from being excessively reduced, and prevent the caving of the scattered and damaged surrounding rock.

[0003] With the continuous development of the coal mine industry, roadway support has become an essential protection device in coal mine mining. However, the existing support structures for roadways in coal mine mining are basically fixed installation structures, which are not convenient for protecting roadways of different heights, and are troublesome to disassemble and install, and are not suitable for the temporary safety support of roadways. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the above technical defects and provide a safety support structure for coal mine roadways.

[0005] To solve the above problems, the technical solution of the utility model is: a safety support structure for coal mine roadways, including a plurality of support frames arranged in parallel with each other. A metal protection net is jointly arranged at the tops of the plurality of support frames. The support frame includes two hydraulic supports. The top of the hydraulic support is fixedly connected with a mounting plate. The mounting plate is of an L-shaped structure, and a support beam is detachably connected to the top thereof. A positioning block is sleeved outside the hydraulic support. The positioning block is fixed outside the hydraulic support, and a through groove is opened at one end thereof. A positioning column is installed through the inside of the through groove. A positioning frame with a U-shaped structure is movably arranged outside the positioning column.

[0006] Further, a positioning plate is fixedly connected to the bottom of the hydraulic support.

[0007] Further, the support beam is an arched beam, and the metal protection net is installed outside the arched beam.

[0008] Further, two ear plates are fixedly connected to the top of the mounting plate, and the two ear plates are respectively attached to the front and back sides of the support beam. The support beam is fixed between the two ear plates through bolt one.

[0009] Further, the positioning column is fixed on the positioning block through bolt two.

[0010] Further, the positioning frame is arranged between adjacent two hydraulic supports, and both the positioning frame and the mounting plate are installed on the side wall of the roadway through expansion bolts.

[0011] The advantages of the present utility model compared with the existing technology are as follows: The height of the support beam can be adjusted by the hydraulic strut of the present utility model, enabling the support of roadways with different heights. The hydraulic strut is detachably connected to both the support beam and the positioning column, facilitating later disassembly, and is suitable for temporary safety support in coal mines. The mounting plate and the positioning frame are installed on the side wall of the roadway through expansion bolts, which can improve the stability of the installation of the hydraulic strut. Description of the Drawings

[0012] Figure 1 is a perspective view of the present utility model.

[0013] Figure 2 is a connection structure diagram of the support frame of the present utility model.

[0014] Figure 3 is the present utility model Figure 2 enlarged view of the structure at A in.

[0015] Figure 4 is a connection structure diagram of the hydraulic strut of the present utility model.

[0016] As shown in the figure: 1, metal protective net; 2, hydraulic strut; 3, mounting plate; 4, support beam; 5, positioning block; 6, positioning column; 7, positioning frame; 8, positioning plate; 9, ear plate. Detailed Implementation Manner

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments; based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] As Figure 1 shown, a safety support structure for a coal mine roadway includes a plurality of support frames arranged in parallel with each other, and a metal protective net 1 is commonly provided at the tops of the plurality of support frames.

[0019] As Figures 2 to 4 shown, the support frame includes two hydraulic struts 2. The top of the hydraulic strut 2 is fixedly connected with a mounting plate 3, and the bottom is fixedly connected with a positioning plate 8. The mounting plate 3 is of an L-shaped structure, and a support beam 4 is detachably connected to its top. The support beam 4 is an arched beam. Two ear plates 9 are fixedly connected to the top of the mounting plate 3, and the two ear plates 9 are respectively attached to the front and back sides of the support beam 4. The support beam 4 is fixed between the two ear plates 9 through bolt 1. The mounting plates 3 are all installed on the side wall of the roadway through expansion bolts.

[0020] The hydraulic support 2 can be preliminarily fixed on the ground of the roadway through the positioning plate 8. Both ends of the support beam 4 are placed on the two mounting plates 3, and both ends of the support beam 4 are respectively clamped between the two ear plates 9 and fixed by the first bolt. The metal protective net 1 is installed on the outside of the support beam 4. When the hydraulic support 2 extends, the top of the support beam 4 can abut against the top of the roadway. At this time, the mounting plate 3 can be fixed on the side wall of the roadway through expansion bolts, improving the installation stability of the hydraulic support 2.

[0021] As Figure 1 and Figure 2 shown, a positioning block 5 is sleeved outside the hydraulic support 2. The positioning block 5 is fixed outside the hydraulic support 2, and a through groove is opened at one end thereof. A positioning column 6 is installed through the inside of the through groove. The positioning column 6 is fixed on the positioning block 5 by the second bolt, and a positioning frame 7 with a U-shaped structure is movably arranged outside the positioning column 6. The positioning frame 7 is arranged between two adjacent hydraulic supports 2, and the positioning frame 7 is installed on the side wall of the roadway through expansion bolts.

[0022] When installing the hydraulic support 2, the end of the positioning block 5 with the through groove is oriented towards the inside of the support frame. The positioning column 6 is inserted into the through groove, the positioning frame 7 is clamped outside the positioning column 6, and is installed on the side wall of the roadway through expansion bolts, which can further improve the installation stability of the hydraulic support 2.

[0023] In specific use, first install the hydraulic support 2 on the ground of the roadway, install the support beam 4 on the mounting plate 3, then install the metal protective net 1 on the outside of the support beam 4. When the hydraulic support 2 extends, the top of the support beam 4 can abut against the top of the roadway. Insert the positioning column 6 into the through groove opened on the positioning block 5, clamp the positioning frame 7 outside the positioning column 6, and install the mounting plate 3 and the positioning frame 7 on the side wall of the roadway through expansion bolts, which can improve the installation stability of the hydraulic support 2. The hydraulic support 2 is detachably connected to both the support beam 4 and the positioning column 6, facilitating later disassembly and being suitable for temporary safety support in coal mines.

[0024] Parts not disclosed in the present utility model are all prior arts, and their specific structures and working principles will not be elaborated herein.

[0025] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

[0027] The above describes the present utility model and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the purpose of the creation of the present utility model, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present utility model.

Claims

1. A safety support structure for a coal mine roadway, comprising a plurality of support frames arranged in parallel with each other, and a metal protection net (1) is commonly arranged at the tops of the plurality of support frames, and is characterized in that: The support frame includes two hydraulic struts (2), the tops of the hydraulic struts (2) are fixedly connected with mounting plates (3), the mounting plates (3) are of an L-shaped structure, and a support beam (4) is detachably connected to the top thereof. A positioning block (5) is sleeved outside the hydraulic strut (2), the positioning block (5) is fixed outside the hydraulic strut (2), and a through groove is formed at one end thereof. A positioning column (6) is installed through the inside of the through groove, and a positioning frame (7) with a U-shaped structure is movably arranged outside the positioning column (6).

2. The safety support structure for a coal mine roadway according to claim 1, wherein: The bottom of the hydraulic strut (2) is fixedly connected with a positioning plate (8).

3. A safety support structure for a coal mine roadway according to claim 1, characterized in that: The support beam (4) is an arched beam, and the metal protection net (1) is installed outside the arched beam.

4. A safety support structure for a coal mine roadway according to claim 1, characterized in that: Two ear plates (9) are fixedly connected to the top of the mounting plate (3), and the two ear plates (9) are respectively attached to the front and back surfaces of the support beam (4), and the support beam (4) is fixed between the two ear plates (9) by a first bolt.

5. A safety support structure for a coal mine roadway according to claim 1, characterized in that: The positioning column (6) is fixed to the positioning block (5) by a second bolt.

6. A safety support structure for a coal mine roadway according to claim 1, characterized in that: The positioning frame (7) is arranged between two adjacent hydraulic struts (2), and both the positioning frame (7) and the mounting plate (3) are installed on the side wall of the roadway by expansion bolts.

Images