Mine false-roof-free supporting working face supporting device

Abstract

The utility model belongs to the field of underground mine roadway support, and particularly discloses a mine false-roof-free support working face supporting device which comprises a base and a supporting rod, a screw jack is arranged on the base, a sleeve is sleeved on the screw jack, the bottom of the sleeve is movably connected with the base, and the supporting rod is arranged on the base. A first connecting base and a second connecting base are arranged on the two sides of the sleeve at different heights respectively, a supporting rod is arranged on the sleeve through the first connecting base or the second connecting base, and a rocker is arranged at the upper end of the sleeve and used for rotating the screw jack to work. The screw jack is connected with the sleeve, the supporting rod and the top protection position are firmly fixed through force applied by the jack, protection without false roofs is achieved, and according to the scheme, design materials are simple and easy to obtain, and manufacturing is easy; meanwhile, during supporting, operation is easy and convenient, the field operation intensity and the material cost are easy to control, and the device is practical.

Description

Technical Field

[0001] This utility model belongs to the field of underground mine roadway support, specifically relating to a support device for a mine face without false roof support. Background Technology

[0002] Currently, in non-ferrous metal mines, during the excavation and support of tunnels without false roofs, the original rock surface is fractured and jointed, posing a safety risk of roof collapse due to exposed rock. To prevent this risk, before support work begins, three or more simple safety posts are used to firmly secure the reinforcing mesh, temporarily protecting and warning of the fractured rock mass at the top of the original rock, preventing roof collapse accidents during the mesh installation and anchor bolt installation processes.

[0003] However, the simple safety posts used have the following shortcomings:

[0004] First, the outer surface of the threaded rod is not protected, and the safety column can only be retrieved after the shotcrete support work is completed. During the shotcrete process, the shotcrete material is easily sprayed onto the threaded rod, and the shotcrete material needs to be cleaned every shift, which is time-consuming and labor-intensive. At the same time, over time, the threaded rod will rust and jam, making it impossible to raise and lower the screw, resulting in the safety column being scrapped and unusable. Second, the processing height of the simple safety column is generally fixed within the range of 2.5 meters to 3 meters, which limits the range of movement. When encountering extremely high original rock tops, wooden boards need to be added to the bottom of the column to raise it, making on-site operation cumbersome.

[0005] Therefore, based on the simple safety column structure, it is urgent to study a new type of safety column, upgrade and transform the structure of the simple safety column from a technical point of view, eliminate its drawbacks, strengthen the support process with the support of new equipment, achieve inherent safety in the support operation without false roof, and reduce labor intensity.

[0006] In view of this, it is necessary to design a new type of support device to solve the above problems. Utility Model Content

[0007] The purpose of this utility model is to provide a support device for mine face without false roof support, which solves the problem of inconvenient support operation when tunneling and supporting non-ferrous metal mines without false roof.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A support device for a mine face without false roof support includes a base and a support rod. A screw jack is provided on the base, and a sleeve is fitted on the screw jack. The bottom of the sleeve is movably connected to the base. A first connecting seat and a second connecting seat are respectively provided at different heights on both sides of the sleeve. A support rod is provided on the sleeve through the first connecting seat or the second connecting seat. A rocker arm is provided at the upper end of the sleeve for rotating the screw jack.

[0010] Preferably, the support rod is provided with an umbrella cap at the top.

[0011] Preferably, the first connecting seat and the second connecting seat are provided with bolts, and the bolts act on the support rod.

[0012] The beneficial effects of this utility model are as follows:

[0013] This utility model utilizes a screw jack connected to a sleeve. The force applied by the jack firmly fixes the support rod to the top protection position, achieving protection without a false top. The design uses simple and readily available materials that are easy to manufacture. At the same time, the operation is simple, the on-site work intensity is low, and the material cost is easy to control, making it a practical device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] In the diagram: 1. Base, 2. Sleeve, 3. First connecting seat, 4. Second connecting seat, 5. Rocker arm, 6. Support rod, 7. Umbrella cap. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0017] like Figure 1 The diagram shows a support device for a mine face without false roof support, comprising a base 1 and a support rod 6. A screw jack is welded onto the base 1 (the advantages of a screw jack are its light weight, portability, ease of maintenance, safe and reliable use, and simple structure; however, it has low transmission efficiency, slow return stroke, and large lifting capacity, making it an ideal large-tonnage mechanical jack). A sleeve 2 is fitted onto the screw jack, with its bottom in contact with the base 1. A first connecting seat 3 and a second connecting seat 4 are respectively located at different heights on both sides of the sleeve 2 (the different heights of the connecting seats facilitate conversion according to different false roof support methods, increasing the usable range). The support rod 6 is mounted on the sleeve 2 via the first connecting seat 3 or the second connecting seat 4. A rocker arm 5 is located at the upper end of the sleeve 2, used to rotate the screw jack. A cap 7 is located at the top of the support rod 6. Bolts are mounted on the first connecting seat 3 and the second connecting seat 4, and these bolts act on the support rod 6.

[0018] In use, first place the upper sleeve 2 on the base 1, then install the screw jack in the sleeve 2, with the rocker arm 5 of the screw jack protruding outside the sleeve 2 for easy rotation to lift the jack. Then, install the support rod 6 on the first connecting seat 3 or the second connecting seat 4 on the sleeve 2 (depending on the height of the non-fake top) by bolts. Then tighten the support rod 6 with bolts, rock the rocker arm 5, and then apply the top cap 7 of the support rod 6 to the non-ferrous metal mine without a fake top.

Claims

1. A support device for a mine face without false roof support, characterized in that: Includes a base (1) and a support rod (6). The base (1) is equipped with a screw jack, and a sleeve (2) is fitted on the screw jack. The bottom of the sleeve (2) is movably connected to the base (1). The sleeve (2) has a first connecting seat (3) and a second connecting seat (4) at different heights on both sides. The sleeve (2) is equipped with a support rod (6) through the first connecting seat (3) or the second connecting seat (4). The upper end of the sleeve (2) is equipped with a rocker arm (5), which is used to rotate the screw jack.

2. The support device for a mine face without false roof support according to claim 1, characterized in that: The top of the support rod (6) is provided with an umbrella cap (7).

3. A support device for a mine face without false roof support according to claim 1, characterized in that: Bolts are provided on the first connecting seat (3) and the second connecting seat (4), and the bolts act on the support rod (6).

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