Coal mine support mine pressure detection device

Abstract

The utility model discloses a coal mine support mine pressure detection device which comprises a base and a detection frame, positioning rods are arranged at the two ends of the top of the base, the detection frame comprises a bottom plate and a top plate, the two ends of the bottom plate are slidably installed on the outer walls of the two positioning rods respectively, the top plate is arranged above the bottom plate, and the top plate is arranged above the bottom plate. Two supporting rods which are distributed in a crossed mode are arranged between the bottom plate and the top plate. According to the coal mine support mine pressure detection device, the height adjusting mode of the supporting frame is changed, the firmness of the supporting frame is improved while the height of the supporting frame is adjusted, and the situation that the height of the supporting frame is reduced due to the fact that threads on a lead screw on the supporting frame are prone to being damaged due to the fact that the supporting frame is subjected to large pressure is avoided; the accuracy of the detection result of the mine pressure detector is ensured, the trouble that the support frame can be reused only by replacing the screw rod and matched parts thereof due to the damage of threads on the surface of the screw rod is avoided, the maintenance cost is saved, and the long-term use of the support frame is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine support pressure detection equipment, in particular to a coal mine support pressure detection device. Background Art

[0002] Coal mine support is a technical method commonly used in underground projects such as coal mines and structures to prevent collapse and support. Its main purpose is to reinforce and support underground rocks and coal seams through various supporting materials and structural forms to ensure the safe operation of workers underground. The coal mine support pressure detection device is a device used to monitor the pressure on the support structure in coal mine tunnels, working faces and other areas. These devices can measure and record the pressure changes on the support structure in real time, help coal mine managers understand the stability and safety of the support structure, and take corresponding measures to ensure the safety of coal mine production. However, due to the different heights inside each mine, in order to facilitate the detection of support pressure in each mine, most of the existing coal mine support pressure detection devices adjust the height of the top plate on the support frame through a screw rod, so that the top plate on the support frame fits with the top inner wall of the mine, so that the support frame is adapted to the height inside the mine, so that the support frame can achieve the purpose of supporting the mine.

[0003] However, since most of the existing screw rods are limited by tightening the nut, when the threaded rod is used to adjust the height of the support frame so that the support frame supports the mine, the top plate on the support frame is subjected to a large pressure, which will be transmitted to the threads on the screw rod and the threads inside the nut, which can easily cause the screw rod and the threads on the nut to be deformed and damaged after being subjected to a large pressure, thereby causing the screw rod to loosen and rotate under the action of pressure, allowing the top plate on the support frame to return to its original position, reducing the support height of the support frame, affecting the accuracy of the mine pressure detection result, and when the threads on the screw rod and the nut are damaged and cannot be used, the entire screw rod and its supporting components need to be replaced before the support frame can be used again, increasing the maintenance cost of the support frame. Therefore, those skilled in the art provide a coal mine support mine pressure detection device to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a coal mine support mine pressure detection device to solve the problems raised in the above background technology.

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

[0006] A coal mine support mine pressure detection device comprises: a base and a detection frame, wherein positioning rods are arranged at both ends of the top of the base, and the detection frame comprises a bottom plate and a top plate, wherein both ends of the bottom plate are respectively slidably mounted on the outer walls of the two positioning rods, the top plate is arranged above the bottom plate, and two cross-distributed support rods are arranged between the bottom plate and the top plate, the two ends of the two support rods are respectively mounted on the upper end surface of the bottom plate and the two ends of the lower end surface of the top plate, and a contact plate for contacting the inner wall of the coal mine tunnel is arranged above the top plate, and a mine pressure detector body for detecting the coal mine support pressure is arranged between the contact plate and the top plate, and the mine pressure detection The detection end of the device body is attached to the lower end surface of the contact plate, and the lower end surface of the base plate is located on both sides of the positioning rod and is slidably installed with arc-shaped limit plates. The two arc-shaped limit plates are respectively clamped on both sides of the positioning rod, and the lower end surface of the base plate is located on the outside of the two arc-shaped limit plates and is provided with support plates. A threaded rod is rotatably installed on the outer wall of the arc-shaped limit plate close to the support plate. One end of the threaded rod away from the support plate is threadedly installed inside the support plate and extends to its outside, and support ears are provided at both ends of the arc-shaped limit plate, and fastening bolts are provided on the two support ears on one side, and the fastening bolts pass through the two support ears and are threadedly installed inside them.

[0007] Preferably, sliding holes are provided at both ends of the bottom plate, and the bottom plate is slidably mounted on the outer walls of the two positioning rods through the sliding holes.

[0008] Preferably, a thread groove is provided at a position of the side wall of the support plate corresponding to the threaded rod, and the threaded rod is threadably installed inside the thread groove and extends to the outside of the support plate.

[0009] Preferably, a threaded hole is provided inside the support ear, and the fastening bolt is threadedly installed inside the support ear through the threaded hole.

[0010] Preferably, a limiting nut is provided at one end of the fastening bolt located outside the two support ears, the limiting nut thread is installed on the outer wall of the fastening bolt and is tightly attached to the side wall of the support ear, and the internal thread of the limiting nut is opposite to the internal thread of the threaded hole.

[0011] Preferably, an annular baffle for limiting the position of the bottom plate is provided on the top of the positioning rod, and the end surface area of ​​the annular baffle is larger than the opening area of ​​the sliding hole.

[0012] Preferably, a plurality of reinforcing support plates are evenly arranged on the top of the roof on both sides of the mine pressure detector body, and the contact plate covers and is installed on the top of the plurality of reinforcing support plates.

[0013] Compared with the prior art, the advantages of the utility model are:

[0014] By setting up a base and a detection frame, the base and the detection frame are allowed to form a support frame. When using the coal mine support mine pressure detection device, the bottom plate can be slid on the outer wall of the positioning rod first to adjust the height of the detection frame so that the contact plate on the top of the detection frame fits the top inner wall of the mine. Then, the threaded rods on the support plates on both sides of the positioning rod are screwed to allow the threaded rods to push the arc limit plate to move under the bottom plate, so that the two arc limit plates are respectively engaged on both sides of the positioning rod to increase the friction between the arc limit plate and the positioning rod. Then, the fastening bolts are screwed to install the fastening bolts on the support ears on the two arc limit plates to limit the positions of the two arc limit plates after the adjustment position. Finally, the limiting nut is screwed to tighten the fastening bolts on the support ears through the limiting nut to complete the fixation of the two arc limit plates, further improving the safety of the mine. The stability of the arc limit plate clamping the positioning rod is improved, and the adjustment method of the height of the support frame can be changed. The firmness of the support frame is improved while adjusting the height of the support frame, avoiding the situation that the threads on the screw rod on the support frame are easily damaged due to the support frame being subjected to greater pressure, thereby reducing the height of the support frame, ensuring the accuracy of the detection results of the mine pressure detector, and moreover, when the support frame is subjected to greater pressure, the pressure borne by the detection frame in contact with the inner wall of the mine is greater than the friction between the arc limit plate and the positioning rod, which will allow the detection frame to slide downward on the outer wall of the positioning rod without damaging the positioning rod and the detection frame, avoiding the trouble of replacing the screw rod and its supporting components before the support frame can be reused due to damage to the thread on the screw rod surface, saving maintenance costs, and ensuring the long-term use of the support frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of a coal mine support pressure detection device according to an embodiment of the utility model;

[0016] Figure 2 It is a three-dimensional schematic diagram of a detection frame according to an embodiment of the utility model;

[0017] Figure 3 This is a bottom schematic diagram of a bottom plate according to an embodiment of the utility model;

[0018] Figure 4 The figure is a schematic diagram of assembling the arc-shaped limiting plate and the positioning rod according to an embodiment of the utility model.

[0019] In the figure: 1. base; 11. positioning rod; 12. annular baffle; 2. detection frame; 21. bottom plate; 211. sliding hole; 22. top plate; 23. support rod; 24. support plate; 241. threaded groove; 25. arc-shaped limit plate; 251. threaded rod; 252. support ear; 253. threaded hole; 26. fastening bolt; 261. limit nut; 27. contact plate; 28. reinforcement support plate; 3. mine pressure detector body. DETAILED DESCRIPTION

[0020] In the description of the present utility model, it should be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variation thereof are intended to cover non-exclusive inclusions.

[0021] Combination Figure 1-Figure 4 As shown, positioning rods 11 are provided at both ends of the top of the base 1, and the detection frame 2 includes a bottom plate 21 and a top plate 22, wherein the two ends of the bottom plate 21 are respectively slidably mounted on the outer walls of the two positioning rods 11, and the top plate 22 is arranged above the bottom plate 21, and two cross-distributed support rods 23 are arranged between the bottom plate 21 and the top plate 22, and the two ends of the two support rods 23 are respectively installed on the upper end surface of the bottom plate 21 and the two ends of the lower end surface of the top plate 22, and a contact plate 27 for contacting the inner wall of the coal mine tunnel is arranged above the top plate 22, and a mine pressure detector body 3 for detecting the coal mine support pressure is arranged between the contact plate 27 and the top plate 22, and the detection end of the mine pressure detector body 3 is attached to the contact plate 2 The lower end surface of the bottom plate 21 is located on both sides of the positioning rod 11 and is slidably mounted with arc-shaped limit plates 25. The two arc-shaped limit plates 25 are respectively engaged with the two sides of the positioning rod 11, and the lower end surface of the bottom plate 21 is located on the outer sides of the two arc-shaped limit plates 25 and is provided with support plates 24. The outer wall of the arc-shaped limit plate 25 is rotatably mounted with a threaded rod 251 on one side close to the support plate 24. The end of the threaded rod 251 away from the support plate 24 is threadedly mounted inside the support plate 24 and extends to the outside thereof, and both ends of the arc-shaped limit plate 25 are provided with support ears 252. The two support ears 252 on one side are provided with fastening bolts 26. The fastening bolts 26 penetrate the two support ears 252 and are threadedly mounted inside them.

[0022] In one embodiment, when using the coal mine support mine pressure detection device, the contact plate 27 can first contact the inner wall of the mine to allow the contact plate 27 to bear the pressure of the inner wall of the mine, and then the mine pressure detector body 3 installed at the detection end on the contact plate 27 detects the pressure of the inner wall of the mine to obtain the pressure value of the working surface of the inner wall of the mine, and then calculates and eliminates the safety hazard of mine collapse based on the pressure value of the working surface of the inner wall of the mine, thereby ensuring safe production in the mine, and multiple reinforcing support plates 28 simultaneously support the contact plate 27, thereby improving the support strength of the contact plate 27, avoiding the situation where the contact plate 27 cannot support the working surface of the inner wall of the mine due to the small support strength, and improving the stability of the support frame to the mine.

[0023] In one embodiment, when adjusting the height of the support frame, the base 1 can be placed on the ground of the mine first, and the position of the bottom plate 21 can be limited by the annular baffle 12 on the positioning rod 11 to prevent the bottom plate 21 from separating from the positioning rod 11, and then the bottom plate 21 can be slid upward on the outer wall of the positioning rod 11 through the sliding hole 211, so that the bottom plate 21 is lifted by the cross-distributed support rods 23 and the contact plate 27 on the top plate 22 installed on its other end is attached to the top inner wall of the mine, thereby changing the adjustment method of the height of the support frame, and improving its firmness while adjusting the height of the support frame, avoiding the situation where the threads on the screw rod on the support frame are easily damaged due to the support frame being subjected to greater pressure, thereby ensuring the accuracy of the detection results of the mine pressure detector.

[0024] In one embodiment, after the height adjustment of the support frame is completed, the threaded rods 251 on the support plates 24 on both sides of the positioning rod 11 at the bottom of the bottom plate 21 can be screwed to allow the threaded rods 251 to move toward the inner side of the support plates 24 inside the thread grooves 241, and push the arc-shaped limit plates 25 to move below the bottom plate 21, so that the two arc-shaped limit plates 25 are respectively engaged on both sides of the positioning rod 11, and the positioning rod 11 is clamped between the two arc-shaped limit plates 25, thereby increasing the friction between the arc-shaped limit plates 25 and the positioning rod 11, and preventing the arc-shaped limit plates 25 from being displaced. The bottom plate 21 located thereon is limited by the arc-shaped limiting plate 25 after limiting, so as to prevent the detection frame 2 from sliding downward on the outer wall of the positioning rod 11, thereby completing the limiting of the support frame after the height adjustment, and the height of the support frame can be adjusted according to the height of the mine, so that the height of the support frame is adapted to the height of the inner cavity of the mine, avoiding the situation that the pressure of the working surface of the mine cannot be detected due to the mismatch between the height of the support frame and the mine, and realizing the support of mines of different heights, which is highly practical.

[0025] In one embodiment, after the positioning rod 11 is clamped between the two arc-shaped limiting plates 25, the fastening bolt 26 can be directly installed on the two ears 252 on one side of the two arc-shaped limiting plates 25 through the threaded hole 253, and the two arc-shaped limiting plates 25 are connected and limited by the fastening bolt 26. Then, the limiting nut 261 on the fastening bolt 26 is screwed to make the limiting nut 261 close to the outer wall of the ear 252, and the fastening bolt 26 is screwed into the threaded hole 253 inside the ear 252 to limit the fastening bolt 26. The position of the arc limit plate 25 completes the secondary limiting of the arc limit plate 25 after the adjusted position, and the arc limit plate 25 can be doubly limited, so that the arc limit plate 25 is clamped on both sides of the positioning rod 11 to prevent the arc limit plate 25 from sliding on the positioning rod 11, and avoids the displacement of the detection frame 2 and the reduction of the support frame height due to the sliding of the arc limit plate 25 on the outer wall of the positioning rod 11, further improving the stability of the arc limit plate 25 clamping the positioning rod 11, and improving the firmness of the support frame after the height is adjusted.

[0026] In one embodiment, when the support frame is subjected to a large pressure, the pressure borne by the detection frame 2 in contact with the inner wall of the mine is greater than the friction between the arc-shaped limit plate 25 and the positioning rod 11, allowing the detection frame 2 to slide downward on the outer wall of the positioning rod 11 through the sliding hole 211 on the bottom plate 21, without damaging the positioning rod 11 and the detection frame 2, thereby avoiding the trouble of having to replace the screw rod and its supporting components before the support frame can be reused due to damage to the surface thread of the screw rod, saving maintenance costs, and ensuring the long-term use of the support frame.

[0027] The working principle of the utility model is as follows: when using the coal mine support mine pressure detection device, the base 1 can be placed on the ground of the mine first, and the position of the bottom plate 21 can be limited by the annular baffle 12 on the positioning rod 11 to prevent the bottom plate 21 from being separated from the positioning rod 11, and then the bottom plate 21 can be slid upward on the outer wall of the positioning rod 11 through the sliding hole 211, so that the bottom plate 21 can be lifted and supported by the cross-distributed support rods 23 and the contact plate 27 on the top plate 22 installed at the other end of the bottom plate 21 can be attached to the top inner wall of the mine, thereby changing the height adjustment method of the support frame, and the bottom plate 21 can be adjusted in the adjustment mode. The height of the support frame is improved while its firmness is improved, avoiding the situation that the thread on the screw rod on it is easily damaged due to the support frame being subjected to a large pressure, thereby reducing the height of the support frame, ensuring the accuracy of the detection result of the mine pressure detector, and then twisting the threaded rod 251 on the support plate 24 on both sides of the positioning rod 11 at the bottom of the bottom plate 21, so that the threaded rod 251 moves toward the inner side of the support plate 24 inside the thread groove 241, and pushes the arc-shaped limit plate 25 to move below the bottom plate 21, so that the two arc-shaped limit plates 25 are respectively engaged with the positioning rods The two sides of the arc-shaped limit plates 25 are clamped together to increase the friction between the arc-shaped limit plates 25 and the positioning rod 11, thereby preventing the arc-shaped limit plates 25 from sliding on the outer wall of the positioning rod 11. The fastening bolts 26 are directly installed on the two ears 252 on one side of the two arc-shaped limit plates 25 through the threaded holes 253. The two arc-shaped limit plates 25 are connected and limited by the fastening bolts 26. The limiting nuts 261 on the fastening bolts 26 are then screwed to make the limiting nuts 261 close to the outer wall of the ears 252. The fastening bolt 26 is tightened in the threaded hole 253 inside the support ear 252, which limits the position of the fastening bolt 26, strengthens the stability of the arc-shaped limit plate 25, and improves the firmness of the support frame after the height is adjusted, thereby completing the installation of the support frame in the mine. Finally, the mine pressure detector body 3 installed on the contact plate 27 at the detection end detects the pressure of the inner wall of the mine, and obtains the pressure value of the working surface of the inner wall of the mine. Then, based on the pressure value of the working surface of the inner wall of the mine, the safety hazard of mine collapse is calculated and eliminated, thereby ensuring safe production in the mine.

[0028] What is described above 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 coal mine support pressure detection device, comprising: A base (1) and a detection frame (2), characterized in that positioning rods (11) are provided at both ends of the top of the base (1), and the detection frame (2) comprises a bottom plate (21) and a top plate (22), wherein the two ends of the bottom plate (21) are respectively slidably mounted on the outer walls of the two positioning rods (11), the top plate (22) is arranged above the bottom plate (21), and two cross-distributed support rods (23) are arranged between the bottom plate (21) and the top plate (22), the two ends of the two support rods (23) are respectively mounted on the upper end surface of the bottom plate (21) and the two ends of the lower end surface of the top plate (22), and a contact plate (27) for contacting the inner wall of the coal mine tunnel is arranged above the top plate (22), and a mine pressure detector body (3) for detecting the coal mine support pressure is arranged between the contact plate (27) and the top plate (22), and the detection end of the mine pressure detector body (3) is attached to the detection end of the mine pressure detector body (3). The lower end surface of the bottom plate (21) is located on both sides of the positioning rod (11), and arc-shaped limit plates (25) are slidably installed. The two arc-shaped limit plates (25) are respectively engaged with the two sides of the positioning rod (11), and the lower end surface of the bottom plate (21) is located on the outer sides of the two arc-shaped limit plates (25) and a support plate (24) is provided. The outer wall of the arc-shaped limit plate (25) is close to the support plate (24). 4), a threaded rod (251) is rotatably mounted on one side of the support plate (24), one end of the threaded rod (251) away from the support plate (24) is threadedly mounted inside the support plate (24) and extends to the outside thereof, and both ends of the arc-shaped limiting plate (25) are provided with support ears (252), and two of the support ears (252) on one side are provided with fastening bolts (26), and the fastening bolts (26) penetrate through the two support ears (252) and are threadedly mounted inside them.

2. A coal mine support pressure detection device according to claim 1, characterized in that: Both ends of the bottom plate (21) are provided with sliding holes (211), and the bottom plate (21) is slidably mounted on the outer walls of the two positioning rods (11) through the sliding holes (211).

3. A coal mine support pressure detection device according to claim 1, characterized in that: A thread groove (241) is provided at a position on the side wall of the support plate (24) corresponding to the threaded rod (251), and the threaded rod (251) is threadedly installed inside the thread groove (241) and extends to the outside of the support plate (24).

4. A coal mine support pressure detection device according to claim 1, characterized in that: A threaded hole (253) is provided inside the support ear (252), and the fastening bolt (26) is threadedly installed inside the support ear (252) through the threaded hole (253).

5. A coal mine support pressure detection device according to claim 4, characterized in that: A limiting nut (261) is provided at one end of the fastening bolt (26) located outside the two support ears (252); the limiting nut (261) is threadedly mounted on the outer wall of the fastening bolt (26) and tightly attached to the side wall of the support ear (252); and the internal thread of the limiting nut (261) is opposite to the internal thread of the threaded hole (253).

6. A coal mine support pressure detection device according to claim 2, characterized in that: An annular baffle (12) for limiting the position of the bottom plate (21) is arranged on the top of the positioning rod (11), and the end surface area of ​​the annular baffle (12) is larger than the opening area of ​​the sliding hole (211).

7. A coal mine support pressure detection device according to claim 1, characterized in that: A plurality of reinforcing support plates (28) are evenly arranged on the top of the top plate (22) on both sides of the mine pressure detector body (3), and the contact plate (27) covers and is installed on the top of the plurality of reinforcing support plates (28).

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