Mining roof pressure detection device

Abstract

The utility model relates to the technical field of mining, in particular to a mining top plate pressure detection device, which is characterized in that one end of each connecting rod is rotatably connected with a top plate, the upper end of each guide post is fixedly connected with a groove block, the upper end of each groove block is clamped with a pressure sensor, the bottom end of each top plate is fixedly connected with an extrusion piece, and the extrusion piece is in contact with the pressure sensor; the lower surface of the top plate is connected with an alarm. When the top of a mining area collapses downwards, extrusion borne by the top plate is increased, the top plate drives the extrusion piece to extrude the pressure sensor downwards, signals measured by the pressure sensor are transmitted into the alarm, the alarm gives an alarm after receiving the signals, and potential safety hazards are found in advance; and when the pressure detected by the pressure sensor is too large, the alarm gives an alarm to withdraw the personnel in advance, so that the personnel are effectively protected, and the accident rate is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mining, in particular to a mining roof pressure detection device. Background Art

[0002] A coal mine is a reasonable space excavated by humans when they dig geological strata rich in coal. It usually includes tunnels, shafts and mining faces, etc. Coal can be divided into four categories: peat, lignite, bituminous coal and anthracite. Coal mining usually requires excavation of mine tunnels, and workers need to work in the mine tunnels. However, since the mine tunnels are underground, they are full of various unstable factors. The most terrifying thing is the collapse of the coal mine tunnel. Once the collapse occurs, it is basically difficult for the people inside to survive.

[0003] During mining, the top of the mine is supported by a supporting mechanism to prevent the top of the mine from collapsing. When the top of the mine is supported by the top plate, when the top of the mine collapses downward, the pressure on the top plate increases. As the pressure on the top plate gradually increases, the supporting device is prone to bend when the pressure is too great, and the supporting effect is lost. It is impossible to know the amount of pressure on the top plate, and it is impossible to form effective protective support. When the ore body collapses, it is impossible to effectively protect the people inside, and there is a safety hazard. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art that it is impossible to know the pressure on the roof, and it is impossible to effectively protect the internal personnel when the ore body collapses, which poses a safety hazard. A mine roof pressure detection device is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A mining roof pressure detection device is designed, including a fixed seat, a guide column is fixedly connected to the upper end of the fixed seat, a movable sleeve is slidably connected to the guide column, a plurality of connecting rods are rotatably connected to the movable sleeve at equal intervals along the axial direction, one end of each of the connecting rods is rotatably connected to the roof, the upper end of the guide column is fixedly connected to a groove block, the upper end of the groove block is clamped with a pressure sensor, the bottom end of the roof is fixedly connected to an extrusion piece, the extrusion piece is in contact with the pressure sensor, and an alarm is connected to the lower surface of the roof.

[0007] Preferably, a mounting hole is provided on the fixing seat.

[0008] Preferably, the center line of the extrusion piece and the center line of the pressure sensor are on the same straight line.

[0009] Preferably, the bottom end of the movable sleeve is fixedly connected to a fixing ring, the bottom end of the fixing ring is fixedly connected to a spring, and one end of the spring is fixedly connected to the upper end of the fixing seat.

[0010] Preferably, a plurality of springs are provided and are evenly spaced and distributed along the axis of the fixing ring.

[0011] The mining roof pressure detection device proposed by the utility model has the following beneficial effects:

[0012] When the top of the mining area collapses, the pressure on the roof increases. The roof drives the extrusion parts downward to squeeze the pressure sensor. The signal measured by the pressure sensor is transmitted to the alarm. After receiving the signal, the alarm sounds an alarm to detect safety hazards in advance. The extrusion parts squeeze the pressure sensor downward, and the pressure on the roof is known. When the pressure detected by the pressure sensor is too high, the alarm sounds an alarm, and personnel are evacuated in advance, which effectively protects personnel and reduces the accident rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The structure diagram of the mining roof pressure detection device proposed by the utility model is as follows: Figure 1 ;

[0014] Figure 2 The structure diagram of the mining roof pressure detection device proposed by the utility model is as follows: Figure 2 ;

[0015] Figure 3 This is a schematic cross-sectional view of the mining roof pressure detection device proposed by the utility model.

[0016] In the figure: 1. fixed seat; 2. guide column; 3. movable sleeve; 4. connecting rod; 5. top plate; 6. groove block; 7. pressure sensor; 8. alarm; 9. extrusion piece; 10. fixing ring; 11. spring. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] Example 1

[0019] Reference Figure 1-3A mining roof pressure detection device comprises a fixed seat 1, which is provided with a mounting hole. A guide column 2 is fixedly connected to the upper end of the fixed seat 1, a movable sleeve 3 is slidably connected to the guide column 2, a plurality of connecting rods 4 are rotatably connected to the movable sleeve 3 at equal intervals along the axial direction, and a roof 5 is rotatably connected to one end of each connecting rod 4, a groove block 6 is fixedly connected to the upper end of the guide column 2, a pressure sensor 7 is clamped at the upper end of the groove block 6, an extrusion piece 9 is fixedly connected to the bottom end of the roof 5, the extrusion piece 9 is in contact with the pressure sensor 7, the center line of the extrusion piece 9 is in the same straight line as the center line of the pressure sensor 7, and an alarm 8 is connected to the lower surface of the roof 5.

[0020] Working process: The fixing bolts pass through the mounting holes to mount the fixing seat 1 on the external support frame, and the device is moved upward so that the top plate 5 contacts the top of the mining area. The top plate 5 drives the extrusion piece 9 to contact the pressure sensor 7 under its own gravity. At the same time, the top plate 5 is connected to the movable sleeve 3 through the connecting rod 4. The connecting rod 4 limits the top plate 5 so that the top plate 5 is in a horizontal state. When the top of the mining area collapses downward, the top plate 5 is squeezed more, and the top plate 5 drives the extrusion piece 9 to squeeze the pressure sensor 7 downward;

[0021] Since the top plate 5 is connected to the movable sleeve 3 through the connecting rod 4, the connection between the top plate 5 and the connecting rod 4 can rotate, and the connection between the top plate 5 and the connecting rod 4 is not easy to break. The movable sleeve 3 slides on the guide column 2, and the connecting rod 4 cooperates with the movable sleeve 3. The pressure value measured by the pressure sensor 7 increases, and the signal measured by the pressure sensor 7 is transmitted to the alarm 8. The alarm 8 sends out an alarm after receiving the signal to discover the safety hazard in advance. The extrusion piece 9 squeezes the pressure sensor 7 downward to know the pressure on the top plate 5. When the pressure detected by the pressure sensor 7 is too large, the alarm 8 sends out an alarm, and the personnel are evacuated in advance, which effectively protects the personnel and reduces the accident rate.

[0022] Example 2

[0023] Reference Figure 3 As another preferred embodiment of the utility model, on the basis of embodiment 1, the bottom end of the movable sleeve 3 is fixedly connected with a fixing ring 10, and the bottom end of the fixing ring 10 is fixedly connected with a spring 11, one end of the spring 11 is fixedly connected to the upper end of the fixing seat 1, and a plurality of springs 11 are provided and are evenly spaced along the axial direction of the fixing ring 10. After the top plate 5 contacts the top of the mining area, the movable sleeve 3 drives the fixing ring 10 to move downward, and the fixing ring 10 squeezes the spring 11 after moving downward, and the spring 11 generates elastic force after being compressed. The elastic force generated by the spring 11 pushes the fixing ring 10 upward, and the fixing ring 10 pushes the movable sleeve 3, so that the movable sleeve 3 will not move downward under the gravity of the top plate 5, reducing the influence of the gravity of the top plate 5 itself on the detection.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mining roof pressure detection device, characterized in that: It comprises a fixing seat (1), wherein: The upper end of the fixed seat (1) is fixedly connected to a guide column (2), a movable sleeve (3) is slidably connected to the guide column (2), a plurality of connecting rods (4) are rotatably connected to the movable sleeve (3) at equal intervals along the axial direction, one end of each connecting rod (4) is rotatably connected to a top plate (5), the upper end of the guide column (2) is fixedly connected to a groove block (6), the upper end of the groove block (6) is clamped with a pressure sensor (7), the bottom end of the top plate (5) is fixedly connected to an extrusion piece (9), the extrusion piece (9) is in contact with the pressure sensor (7), and the lower surface of the top plate (5) is connected to an alarm (8).

2. The mining roof pressure detection device according to claim 1, characterized in that: The fixing seat (1) is provided with a mounting hole.

3. The mining roof pressure detection device according to claim 1, characterized in that: The center line of the extrusion member (9) and the center line of the pressure sensor (7) are on the same straight line.

4. The mining roof pressure detection device according to claim 1, characterized in that: The bottom end of the movable sleeve (3) is fixedly connected to a fixing ring (10), the bottom end of the fixing ring (10) is fixedly connected to a spring (11), and one end of the spring (11) is fixedly connected to the upper end of the fixing seat (1).

5. The mining roof pressure detection device according to claim 4, characterized in that: The springs (11) are provided in plurality and are distributed at equal intervals along the axis direction of the fixing ring (10).

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