Coal mine tunnel roof supporting device

Abstract

The utility model discloses a coal mine tunnel roof supporting device which comprises two stand columns arranged in the vertical direction, the upper ends of the two stand columns are each hinged to an arc-shaped steel plate, and the ends, away from the stand columns, of the two arc-shaped steel plates are hinged to each other. The arc-shaped steel plates and the stand columns are limited through first limiting mechanisms, and the two arc-shaped steel plates are limited through second limiting mechanisms. The stand columns are hinged to the arc-shaped steel plates, the two steel plates are hinged to each other, the steel plates and the stand columns are limited through the limiting bolts during installation, the two arc-shaped steel plates are limited through the telescopic rods, installation is convenient, the limiting bolts and the telescopic rods are taken down, and storage and transportation are convenient.

Description

Technical Field

[0001] The utility model relates to a roof support device for coal mine roadways, belonging to the technical field of mining support. Background Art

[0002] The roof support of coal mine roadways generally adopts an arch-shaped metal shed for support. However, the existing metal shed does not have the function of monitoring the deformation of the roof, and it is impossible to detect in time when the roof deforms; in addition, the existing metal shed is generally pre-fabricated with accessories and then installed on site. The installation process is cumbersome and the installation efficiency is low. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a roof support device for coal mine roadways to solve the technical problems existing in the above-mentioned prior art.

[0004] The technical solution adopted by the utility model is as follows: a roof support device for coal mine roadways includes two vertical columns. The upper ends of the two columns are respectively hinged with an arc-shaped steel plate, and the ends of the two arc-shaped steel plates away from the columns are hinged to each other; the arc-shaped steel plate and the column are limited by a first limiting mechanism, and the two arc-shaped steel plates are limited by a second limiting mechanism.

[0005] Preferably, the arc-shaped steel plate and the column are hinged through a first rotating shaft. Through holes are correspondingly arranged between the outer sleeve and the inner rotating shaft of the first rotating shaft, and the outer sleeve and the inner rotating shaft of the first rotating shaft are limited by a limit bolt. The bolt penetrates through the outer sleeve and the inner rotating shaft of the first rotating shaft and is threadedly connected with a nut.

[0006] Preferably, the two arc-shaped steel plates are correspondingly provided with a first blind hole and a second blind hole with opposite openings. The device further includes a telescopic rod, and the two ends of the telescopic rod are respectively placed inside the first blind hole and the second blind hole and tightly abut against the bottoms of the first blind hole and the second blind hole.

[0007] Preferably, the telescopic rod includes a first support rod and a second support rod that are threadedly connected.

[0008] Preferably, the lower end of the arc-shaped steel plate is provided with a third blind hole with an opening facing downwards, and a ranging instrument arranged vertically downwards is installed inside the third blind hole.

[0009] Preferably, a fourth blind hole is arranged on the column, and an alarm is installed inside the fourth blind hole. The ranging instrument is electrically connected to the alarm through a controller.

[0010] Advantages of the Utility Model

[0011] 1. Compared with the prior art, in the utility model, the column and the arc-shaped steel plate are hinged, and the two steel plates are hinged to each other. During installation, the steel plate and the column are limited by a limit bolt, and the two arc-shaped steel plates are limited by a telescopic rod. The installation is convenient. When the limit bolt and the telescopic rod are removed, it is convenient for storage and transportation.

[0012] 2. Compared with the prior art, in the utility model, by setting a rangefinder and an alarm, it is convenient to monitor the deformation of the roadway roof. When the deformation of the roadway exceeds the set value, the rangefinder controls the alarm to give an alarm through the controller, reminding the staff to deal with it in time, avoiding the occurrence of safety accidents, and improving the safety performance of the support. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the whole utility model.

[0014] The reference numerals in the accompanying drawings of the specification include: column 1, arc-shaped steel plate 2, first rotating shaft 3, limit bolt 4, limit nut 5, second rotating shaft 6, first support rod 7, second support rod 8, rangefinder 9, alarm 10. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The following further introduces the utility model in combination with the accompanying drawings and specific embodiments.

[0016] Embodiment 1:

[0017] A roof support device for a coal mine roadway, as Figure 1 shown, includes two columns 1 arranged vertically on the left and right. One arc-shaped steel plate 2 is hinged to the upper end of each of the two columns 1. The arc-shaped steel plate 2 and the column 1 are hinged through a first rotating shaft 3. Through holes are correspondingly arranged between the outer sleeve and the inner rotating shaft of the first rotating shaft 3. The outer sleeve and the inner rotating shaft of the first rotating shaft 3 are limited by a limit bolt 4. The bolt passes through the outer sleeve and the inner rotating shaft of the first rotating shaft 3 and is threadedly connected with a nut. When the limit bolt 4 is removed, the arc-shaped steel plate 2 can rotate relative to the column 1, which is convenient for handling; when in use, the limit bolt 4 is installed to limit the arc-shaped steel plate 2 relative to the column 1, which is convenient for installation.

[0018] As Figure 1As shown in the figure, the ends of the left and right arc-shaped steel plates 2 far away from the column 1 are hinged to each other through a second rotating shaft 6; the left and right arc-shaped steel plates 2 are correspondingly provided with a first blind hole and a second blind hole with opposite openings, and further includes a telescopic rod, the two ends of the telescopic rod are respectively placed inside the first blind hole and the second blind hole and press against the bottoms of the first blind hole and the second blind hole. The telescopic rod includes a first support rod 7 and a second support rod 8 connected by threads. After installing the column 1 and the arc-shaped steel plate 2, place the first support rod 7 inside the first blind hole, rotate the second support rod 8, while the second support rod 8 extends and approaches the second blind hole until the two ends of the telescopic rod press against the first blind hole and the second blind hole. The telescopic rod plays a role in supporting and strengthening the arc-shaped steel plate 2, and the telescopic rod can be removed, which is convenient for transportation.

[0019] As Figure 1 shown in the figure, a third blind hole with an opening facing downwards is arranged at the lower end of each arc-shaped steel plate 2, a distance measuring instrument 9 arranged vertically downwards is installed inside the third blind hole, a fourth blind hole is arranged on each column 1, and an alarm 10 is installed inside the fourth blind hole. The distance measuring instrument 9 on the arc-shaped steel plate 2 is electrically connected to the alarm 10 on the corresponding column 1 through a controller.

[0020] When the roof of the roadway collapses and deforms, the distance measured by the distance measuring instrument 9 from the ground of the roadway will become smaller. By setting the critical value of the distance measured by the distance measuring instrument 9 when the alarm 10 emits an alarm through the controller, when the roadway deformation exceeds the set value, the distance measuring instrument 9 controls the alarm 10 to emit an alarm through the controller, reminding the staff to deal with it in time, avoiding the occurrence of safety accidents, and improving the safety performance of the support.

[0021] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A roof support device for coal mine roadways, characterized in that: It includes two vertical columns. An arc-shaped steel plate is hinged to the upper end of each of the two columns, and one end of the two arc-shaped steel plates away from the columns is hinged to each other; the arc-shaped steel plate and the column are limited by a first limiting mechanism, and the two arc-shaped steel plates are limited by a second limiting mechanism.

2. The roof support device for a coal mine roadway according to claim 1, characterized in that: The arc-shaped steel plate and the column are hinged through a first rotating shaft. Through holes are correspondingly arranged between the outer sleeve and the inner rotating shaft of the first rotating shaft. The outer sleeve and the inner rotating shaft of the first rotating shaft are limited by a limiting bolt, and the bolt passes through the outer sleeve and the inner rotating shaft of the first rotating shaft and is threadedly connected with a nut.

3. The roof support device for coal mine roadway according to claim 1, characterized in that: A first blind hole and a second blind hole with opposite openings are correspondingly arranged on the two arc-shaped steel plates. An expansion rod is further included. The two ends of the expansion rod are respectively placed inside the first blind hole and the second blind hole and abut against the bottoms of the first blind hole and the second blind hole.

4. The roof support device for coal mine roadway according to claim 3, characterized in that: The expansion rod includes a first support rod and a second support rod that are threadedly connected.

5. The roof support device for a coal mine roadway according to claim 1, characterized in that: A third blind hole with an opening facing downwards is arranged at the lower end of the arc-shaped steel plate, and a distance measuring instrument arranged vertically downwards is installed inside the third blind hole.

6. The roof support device for a coal mine roadway according to claim 5, characterized in that: A fourth blind hole is arranged on the column, and an alarm is installed inside the fourth blind hole. The distance measuring instrument is electrically connected to the alarm through a controller.

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