Gas prediction system for coal mine retrocovered fault structural area

Abstract

The utility model discloses a coal mine retrocovered fault structure area gas prediction system, which comprises a mounting seat and a connecting seat, a gas measuring device and an alarm are mounted on the mounting seat, the gas measuring device is electrically connected with the alarm, symmetrical lead screws are rotatably mounted on the mounting seat, the connecting seat is sleeved on the lead screws, and the gas measuring device is electrically connected with the alarm. The concentration of gas in a mine hole can be detected through the arranged gas measuring device, the preset value of the gas concentration is set, when the gas concentration exceeds the preset value, an alarm is given through the alarm to inform that the gas concentration exceeds the standard, and therefore the gas concentration can be accurately detected. Through cooperative use of the connecting assembly and the lead screw, conversion can be conducted according to the installation position of the gas measuring device, the gas measuring device is installed on the top end of the inner wall of a retrocovered fault structure area or a stand column, and the installation convenience of the gas measuring device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection, and specifically relates to a gas prediction system for a reverse thrust fault structure area in a coal mine. Background Technique

[0002] The fault structure zone is a dangerous area for coal and gas outbursts. Before taking measures to eliminate outbursts, it is necessary to predict the danger of coal and gas outbursts. The more commonly used ones are regional outburst prediction and local outburst prediction (daily prediction) divided by prediction points. In actual production, a suitable prediction method should be selected according to the size of the fault scale.

[0003] In regional outburst prediction, through retrieval, a mine gas concentration prediction and alarm device with the patent number CN220913737U can fix the gas detector and the alarm as a whole to the inner wall of the top of the mine tunnel and install and fix it to the columns in the mine tunnel according to the required fixed positions. However, these two fixing methods adopt different structures and cannot cooperate and convert with each other, which not only occupies space, but also causes waste of consumables, and the operation method is not convenient. Therefore, a gas prediction system for a reverse thrust fault structure area in a coal mine is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a gas prediction system for a reverse thrust fault structure area in a coal mine to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A gas prediction system for a reverse thrust fault structure area in a coal mine includes a mounting base and a connecting base. A gas detector and an alarm are installed on the mounting base. The gas detector is electrically connected to the alarm. Symmetric lead screws are rotatably installed on the mounting base. The connecting base is sleeved on the lead screws, and a connecting component screwed to the lead screws is installed on the connecting base for the conversion of the fixing method.

[0006] Preferably, the connecting component includes sliders installed on the connecting base. Symmetric connecting plates are slidably arranged on the sliders. A bidirectional lead screw is screwed between the two connecting plates. Threaded holes are opened between the side walls where the two connecting plates are in contact, and the threaded holes are screwed to the lead screws.

[0007] Preferably, insertion blocks are installed at both ends of the connecting base, and the insertion blocks are inserted into the grooves on the inner wall of the mine tunnel. The lead screws are screwed into the threaded grooves on the inner wall of the mine tunnel.

[0008] Preferably, limiting grooves are opened on the opposite surfaces of the mounting base and the connecting base. By screwing the connecting component to the lead screws and then turning the lead screws to adjust the distance between the mounting base and the connecting base to clamp the columns.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: A gas prediction system for the reverse thrust fault structure area in coal mines can detect the gas concentration in the mine through the installed gas detector. By setting a preset value for the gas concentration, when the gas concentration exceeds the preset value, an alarm is triggered by the alarm to inform that the gas concentration exceeds the standard. Through the combined use of the connection component and the lead screw, it can be converted according to the installation position of the gas detector and installed on the top inner wall or the column of the reverse thrust fault structure area, increasing the convenience of installing the gas detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is the overall structural schematic diagram of the utility model;

[0011] Figure 2 is the structural state schematic diagram for fixing on the column of the utility model;

[0012] Figure 3 is the structural state schematic diagram for fixing on the inner wall of the mine of the utility model.

[0013] In the figure: 1 - mounting base, 2 - connecting seat, 3 - gas detector, 4 - alarm, 5 - lead screw, 6 - limit groove, 7 - slider, 8 - connecting plate, 9 - bidirectional lead screw, 10 - threaded hole, 11 - plug-in block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to 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 of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0015] Please refer to Figures 1-3 , the present utility model provides a technical solution: A gas prediction system for the reverse thrust fault structure area in coal mines includes a mounting base 1 and a connecting seat 2. A gas detector 3 and an alarm 4 are installed on the mounting base 1. The gas detector 3 is electrically connected to the alarm 4. Symmetric lead screws 5 are rotatably installed on the mounting base 1. The connecting seat 2 is sleeved on the lead screws 5. A connection component for fixing method conversion is installed on the connecting seat 2 and is screwed to the lead screws 5.

[0016] The connection component includes sliders 7 installed on the connecting seat 2. Symmetric connecting plates 8 are slidably arranged on the sliders 7. A bidirectional lead screw 9 is screwed between the two connecting plates 8. Threaded holes 10 are formed between the side walls of the two connecting plates 8 in contact, and the threaded holes 10 are screwed to the lead screws 5.

[0017] The two side ends of the connecting seat 2 are provided with plug-in blocks 11, and the plug-in blocks 11 are inserted into the grooves on the inner wall of the mine tunnel. The lead screw 5 is screwed into the threaded groove on the inner wall of the mine tunnel.

[0018] The opposite surfaces of the mounting seat 1 and the connecting seat 2 are provided with limiting grooves 6, which are screwed to the lead screw 5 through a connecting component, and then the lead screw 5 is rotated to adjust the distance between the mounting seat 1 and the connecting seat 2 to clamp the upright post.

[0019] Working principle: When the utility model needs to install the gas detector to the top end of the inner wall of the overthrust fault structure area, the bidirectional lead screw 9 is rotated to drive the two connecting plates 8 to separate, and the threaded holes 10 are separated from the lead screw 5. Then the plug-in blocks 11 on the connecting plates 8 are inserted into the slots opened at the top end of the inner wall of the overthrust fault structure area. Then the lead screw 5 is rotated, and the lead screw 5 is screwed into the threaded groove opened at the top end of the inner wall of the overthrust fault structure area, so as to fix the gas detector 3. When the gas detector 3 needs to be installed on the upright post of the overthrust fault structure area, the connecting plate 8 is removed, the bidirectional lead screw 9 is rotated to drive the two connecting plates 8 to fit together. Then the mounting seat 1 and the connecting seat 2 are placed on both sides of the upright post, and then the connecting seat 2 is inserted onto the lead screw 5 to align the upright post with the limiting groove 6. Then the lead screw 5 is rotated, and the lead screw 5 is screwed onto the threaded hole 10 to adjust the distance between the mounting seat 1 and the connecting seat 2 until the upright post is clamped in the limiting groove 6 to fix the gas detector 3. The gas detector 3 monitors the gas concentration in the overthrust fault structure area. By setting a preset value of the gas concentration, when the gas concentration exceeds the preset value, an alarm is given through the alarm 4 to inform that the gas concentration exceeds the standard.

[0020] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A gas prediction system for a reverse thrust fault structure area in a coal mine, comprising a mounting base (1) and a connecting base (2), wherein a gas detector (3) and an alarm (4) are installed on the mounting base (1), and the gas detector (3) is electrically connected to the alarm (4), and is characterized in that: Symmetric lead screws (5) are rotatably mounted on the mounting base (1). The connecting seat (2) is sleeved on the lead screws (5). A connecting component that is screwed to the lead screws (5) is mounted on the connecting seat (2) for converting the fixing method.

2. The gas prediction system for the reverse thrust fault structure area in coal mines according to claim 1, characterized in that: The connecting component includes sliders (7) mounted on the connecting seat (2). Symmetric connecting plates (8) are slidably arranged on the sliders (7). A bidirectional lead screw (9) is screwed between the two connecting plates (8). Threaded holes (10) are formed between the side walls where the two connecting plates (8) are in contact, and the threaded holes (10) are screwed to the lead screws (5).

3. The gas prediction system for the reverse thrust fault structure area in coal mines according to claim 1, wherein: Plug-in blocks (11) are mounted at both side ends of the connecting seat (2), and the plug-in blocks (11) are inserted into slots in the inner wall of the mine tunnel. The lead screws (5) are screwed into threaded grooves in the inner wall of the mine tunnel.

4. The gas prediction system for the reverse thrust fault structure area in coal mines according to claim 1, characterized in that: Limiting grooves (6) are formed on the opposite surfaces of the mounting base (1) and the connecting seat (2). By screwing the connecting component to the lead screws (5) and then turning the lead screws (5), the distance between the mounting base (1) and the connecting seat (2) is adjusted to clamp the upright column.

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