Coal mine underground monitoring alarm device

Abstract

The utility model relates to the technical field of coal mine underground monitoring, in particular to a coal mine underground monitoring alarm device which comprises an alarm, an alarm lamp is fixedly connected to the top end of the alarm, a handle is rotationally connected to the top end of the alarm through a supporting block, and a columnar monitor is fixedly connected to the bottom end of the alarm. A blocking mechanism is arranged at the bottom end of the alarm and comprises a first magnet, a second magnet, a third magnet, a fourth magnet and mounting blocks, the mounting blocks are symmetrically and fixedly connected to the bottom end of the alarm, moving rods are slidably connected to the mounting blocks, springs are fixedly connected to the side walls of the mounting blocks, and the moving rods are fixedly connected to the side walls of the springs. The first magnet is fixedly connected to one end of one moving rod, the second magnet is fixedly connected to one end of the other moving rod, and the filter cover has the beneficial effects that the columnar monitor in the filter cover can be prevented from being covered by dust in air, so that the sensitivity of the columnar monitor in normal use is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of underground coal mine monitoring technology, specifically to an underground coal mine monitoring and alarm device. Background Technology

[0002] Methane gas is mainly composed of alkanes, with methane making up the vast majority, and small amounts of ethane, propane, and butane. It also generally contains hydrogen sulfide, carbon dioxide, nitrogen, and water, as well as trace amounts of inert gases such as helium and argon. Under standard conditions, methane to butane exist in a gaseous state, while pentane and above are liquids. If exposed to an open flame, it can burn, causing a gas explosion that directly threatens the lives of miners.

[0003] The high dust content in the air underground in coal mines makes it easy for the columnar detectors on gas monitoring and alarm devices to be covered by dust. This dust can reduce the detection sensitivity of the columnar detectors and affect the normal use of the alarm devices. Utility Model Content

[0004] The purpose of this invention is to provide a monitoring and alarm device for underground coal mines to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coal mine underground monitoring and alarm device, including an alarm, an alarm light fixedly connected to the top of the alarm, a handle rotatably connected to the top of the alarm via a support block, and a columnar monitor fixedly connected to the bottom of the alarm;

[0006] The bottom of the alarm is provided with a blocking mechanism, which includes a first magnet, a second magnet, a third magnet, a fourth magnet and a mounting block. The mounting blocks are symmetrically fixedly connected to the bottom of the alarm. Each mounting block is slidably connected with a moving rod. Each mounting block is fixedly connected with a spring on its side wall. The first magnet is fixedly connected to one end of one of the moving rods, the second magnet is fixedly connected to one end of the other moving rod, and a filter cover is fixedly connected between the third magnet and the fourth magnet.

[0007] Preferably, the handle is C-shaped.

[0008] Preferably, the first magnet and the third magnet are magnetically attracted together, and the second magnet and the fourth magnet are magnetically attracted together.

[0009] Preferably, the columnar monitor is located inside the filter cover, which is positioned between the first magnet and the second magnet.

[0010] Preferably, one end of each spring is fixedly connected to the mounting block.

[0011] Compared with the prior art, the beneficial effects of this utility model are: by installing the filter cover at the bottom of the alarm through the first magnet, the second magnet, the third magnet and the fourth magnet, the dust in the air will be blocked by the filter cover, which can prevent the columnar detector inside the filter cover from being covered by the dust in the air, thus ensuring the sensitivity of the columnar detector during normal use. Attached Figure Description

[0012] Fig. 1 This is a schematic diagram of the main structure of this utility model;

[0013] Fig. 2 This is a schematic diagram of the specific structure of the bottom end of this utility model;

[0014] Fig. 3 This is a schematic diagram of the separation structure of the filter cover and columnar monitor of this utility model.

[0015] In the diagram: 1. Alarm; 2. Alarm light; 3. Handle; 4. Columnar monitor; 5. Blocking mechanism; 51. First magnet; 52. Second magnet; 53. Third magnet; 54. Fourth magnet; 55. Mounting block; 56. Moving rod; 57. Spring; 58. Filter cover. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figs. 1-3 The present invention provides the following technical solution:

[0018] Example 1: A coal mine underground monitoring and alarm device includes an alarm 1, an alarm light 2 fixedly connected to the top of the alarm 1, a handle 3 rotatably connected to the top of the alarm 1 via a support block, and a columnar monitor 4 fixedly connected to the bottom of the alarm 1. The handle 3 is C-shaped.

[0019] When in use, the columnar monitor 4 will activate the alarm 1 when it detects that the gas concentration in the coal mine exceeds the standard. At this time, the alarm 1 will sound an alarm to remind the staff to take appropriate measures. At the same time, the alarm 1 will activate the alarm light 2. The flashing light of the alarm light 2 can help the staff to find the area with excessive gas concentration in time. When the alarm 1 is removed from the coal mine, it can be picked up and held by the handle 3.

[0020] Example 2: The technical solution of this example, which differs from that of Example 1, includes: a blocking mechanism 5 at the bottom of the alarm 1, the blocking mechanism 5 including a first magnet 51, a second magnet 52, a third magnet 53, a fourth magnet 54 and a mounting block 55, the mounting blocks 55 being symmetrically fixedly connected to the bottom of the alarm 1, each mounting block 55 having a sliding rod 56 slidably connected to it, and each mounting block 55 having a spring 57 fixedly connected to its side wall, the first magnet 51 being fixedly connected to one end of one of the sliding rods 56, the second magnet 52 being fixedly connected to one end of the other sliding rod, the third magnet 53 and the fourth magnet 54 being fixedly connected together to a filter cover 58, the first magnet 51 and the third magnet 53 being magnetically attracted together, the second magnet 52 and the fourth magnet 54 being magnetically attracted together, the columnar monitor 4 being located inside the filter cover 58, the filter cover 58 being located in the middle position between the first magnet 51 and the second magnet 52, and one end of each spring 57 being fixedly connected to the mounting block 55;

[0021] In use, the first magnet 51 is the N pole and the third magnet 53 is the S pole, so the first magnet 51 and the third magnet 53 will attract each other. The second magnet 52 is the N pole and the fourth magnet 54 is the S pole, so the second magnet 52 and the fourth magnet 54 will attract each other. The filter cover 58 can block the columnar detector 4 to prevent a large amount of dust from covering the columnar detector 4. When removing the filter cover 58, the filter cover 58 can be rotated forcefully, so that the filter cover 58 drives the third magnet 53 to rotate in the direction of the second magnet 52. When the third magnet 53 and the second magnet 52 are aligned, a repulsive force will be generated between the third magnet 53 and the second magnet 52. Similarly, a repulsive force will also be generated between the first magnet 51 and the fourth magnet 54. At this time, the first magnet 51 and the second magnet 52 will both drive the moving rod 56 to move in the direction of the mounting block 55, and the first magnet 51 and the second magnet 52 will both squeeze and contract the spring 57. At this time, the filter cover 58 can be removed from the bottom of the alarm 1. The installation is the same.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coal mine underground monitoring and alarm device, including an alarm (1), an alarm light (2) fixedly connected to the top of the alarm (1), a handle (3) rotatably connected to the top of the alarm (1) through a support block, and a columnar monitor (4) fixedly connected to the bottom of the alarm (1). Its features are: The bottom of the alarm (1) is provided with a blocking mechanism (5). The blocking mechanism (5) includes a first magnet (51), a second magnet (52), a third magnet (53), a fourth magnet (54) and a mounting block (55). The mounting blocks (55) are symmetrically fixedly connected to the bottom of the alarm (1). Each mounting block (55) is slidably connected with a moving rod (56). Each mounting block (55) is fixedly connected with a spring (57) on its side wall. The first magnet (51) is fixedly connected to one end of one of the moving rods (56), and the second magnet (52) is fixedly connected to one end of the other moving rod (56). A filter cover (58) is fixedly connected between the third magnet (53) and the fourth magnet (54).

2. The coal mine underground monitoring and alarm device according to claim 1, characterized in that: The handle (3) is specifically designed in a C-shape.

3. The coal mine underground monitoring and alarm device according to claim 1, characterized in that: The first magnet (51) and the third magnet (53) are magnetically attracted together, and the second magnet (52) and the fourth magnet (54) are magnetically attracted together.

4. The coal mine underground monitoring and alarm device according to claim 1, characterized in that: The columnar monitor (4) is located inside the filter cover (58), which is located between the first magnet (51) and the second magnet (52).

5. The coal mine underground monitoring and alarm device according to claim 1, characterized in that: One end of each spring (57) is fixedly connected to the mounting block (55).

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