Mining safety early warning monitor

Abstract

The utility model relates to the technical field of safety monitoring, in particular to a mining safety early warning monitor, which comprises two groups of mounting seats, namely a mounting seat I and a mounting seat II which are respectively fixed on the front side and the rear side of a crack, a multidirectional monitoring mechanism is arranged between the mounting seat I and the mounting seat II, and is used for measuring the changes of the front-back width, the left-right displacement and the up-down displacement of the two sides of the crack. The width change in the crack expansion process can be monitored, and meanwhile, the change of the height and the left-right displacement of the two sides of the crack can be monitored.

Description

Technical Field

[0001] This utility model relates to the field of safety monitoring technology, specifically to a mine safety early warning and monitoring device. Background Technology

[0002] Mining activities disrupt the natural stress balance of the rock and soil. As the mining area expands continuously, the concentrated stress exceeds the yield stress of the rock mass, causing the stress balance of the rock strata to be disrupted, resulting in deformation and damage, and even causing fractures in the rock strata.

[0003] Surface cracks can easily trigger disasters such as landslides, and can also have a significant negative impact on the land's ecological environment, so safety monitoring is necessary.

[0004] Current mine safety early warning and monitoring devices mostly use methods such as direct measurement with a ruler or rangefinder. Direct measurement with a ruler requires each measurement to be taken, which is inefficient. Installing a rangefinder, such as using a laser transmitter and laser receiver, can collect data quickly, but it is costly. Furthermore, when a crack expands, it may not be able to expand in a straight line, and displacement may also occur in the left-right and up-down directions. Once such displacement occurs, the laser transmitter and laser receiver will be misaligned, making it difficult to measure data effectively. Utility Model Content

[0005] (I) Technical Issues

[0006] The present invention aims to at least solve the problem in the prior art that cracks may undergo displacement changes in multiple directions during their development, and there is currently a lack of synchronous measurement of multi-directional displacement.

[0007] (II) Technical Content

[0008] This solution provides a mine safety early warning and monitoring device, which is achieved by the following specific technical means: including two sets of mounting bases, namely mounting base one and mounting base two, which are fixed on the front and rear sides of the crack;

[0009] A multi-directional monitoring mechanism is provided between mounting base one and mounting base two. The multi-directional monitoring mechanism is used to measure the changes in front-to-back width, left-to-right displacement and up-down displacement on both sides of the crack.

[0010] Preferred technical solution one: The multi-directional monitoring mechanism consists of a detection end set on mounting base one and a feedback end set on mounting base two, wherein the detection end and the feedback end are movably connected.

[0011] Preferred technical solution 2: The detection end includes a straight bar; the feedback end includes a measuring frame fixed on the mounting base 2, the measuring frame is a rectangular frame, and a height feedback frame slides vertically in the rectangular frame, while a transverse feedback frame slides horizontally in the rectangular frame, a slider 1 slides horizontally on the height feedback frame, and a slider 2 slides vertically on the transverse feedback frame, the straight bar passes through the holes on slider 2 and slider 1.

[0012] Preferred technical solution 3: The straight bar has a scale; at the same time, the vertical and horizontal sides of the rectangular frame also have scales.

[0013] Preferred technical solution four: Both slider one and slider two are equipped with proximity sensors, with the detection end of the proximity sensor facing into the hole, for detecting whether the straight bar passes through the hole.

[0014] Preferred technical solution five: There can be multiple sets of the straight bars, which are spliced ​​and connected in sequence.

[0015] (III) Technical Effects

[0016] The above structure gives this solution the following advantages:

[0017] 1. By combining the straight bar, the height feedback frame, and the lateral movement feedback frame, it is possible not only to monitor the width change during crack propagation, but also to monitor the changes in height and lateral displacement on both sides of the crack.

[0018] 2. The multi-directional monitoring structure enables effective monitoring even when changes occur in multiple directions, avoiding the problem of detection failure caused by misalignment in other directions, which is common with simple linear measurements.

[0019] 3. It has an early warning function for rapid changes in crack width and is low in cost. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of this solution;

[0022] Figure 2 This is the front view of the solution;

[0023] Figure 3 This is a schematic diagram of the feedback end of this solution;

[0024] Figure 4 This is a schematic diagram of the detection end of this solution;

[0025] Figure 5 This is an exploded view of the mounting base for this design.

[0026] Among them, 1. Mounting base one, 2. Mounting base two, 3. Multi-directional monitoring mechanism, 31. Detection end, 311. Straight bar, 312. Threaded hole, 32. Feedback end, 321. Measuring frame, 322. Height feedback frame, 323. Lateral movement feedback frame, 324. Slider one, 325. Slider two, 326. Hole, 4. Proximity sensor, 5. Preliminary design frame, 6. Bolt. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-2 The mine safety early warning monitor includes two sets of mounting bases, namely mounting base 1 and mounting base 2, which are fixed on the front and rear sides of the crack. Mounting base 1 and mounting base 2 are provided with mounting holes for anchor rods to pass through. At the same time, a multi-directional monitoring mechanism 3 is provided between mounting base 1 and mounting base 2. The multi-directional monitoring mechanism 3 is used to measure the changes in front and rear width, left and right displacement and up and down displacement on both sides of the crack.

[0029] The multi-directional monitoring mechanism 3 consists of a detection end 31 installed on mounting base 1 and a feedback end 32 installed on mounting base 2;

[0030] The detection end 31 is movably connected to the feedback end 32, and the feedback end 32 is used to provide feedback on the positional changes of the detection end 31, thereby providing feedback on the changes in the development and expansion of the crack.

[0031] Please see Figures 2-4 The safety early warning monitor has a detection end 31 that is a straight bar 311 with scales on it.

[0032] The feedback end 32 includes a measuring frame 321 fixed on the mounting base 2. The measuring frame 321 is a rectangular frame with an open top. A height feedback frame 322 slides vertically on the vertical side of the rectangular frame, and a horizontal movement feedback frame 323 slides horizontally on the bottom side of the rectangular frame. The horizontal movement feedback frame 323 is connected to the dovetail structure on the horizontal side through a dovetail groove on the bottom side to prevent slippage. A slider 324 slides horizontally on the height feedback frame 322, and a slider 325 slides vertically on the horizontal movement feedback frame 323. The slider 325 and the slider 324 overlap. A straight bar 311 passes through the holes 326 on the slider 325 and the slider 324 and can slide in the holes 326. At the same time, scales are also opened on the vertical and horizontal sides of the rectangular frame to facilitate the rapid acquisition of multi-directional data changes of the crack.

[0033] During the monitoring process, the width change data of the crack can be obtained by observing the change in the length of the straight bar 311 between mounting base 1 and mounting base 2; the height change on both sides of the crack can be obtained by observing the change in the vertical height of the height feedback frame 322 in the rectangular frame; and the displacement change on both sides of the crack in the left and right directions can be obtained by observing the change in the horizontal position of the transverse feedback frame 323 in the rectangular frame.

[0034] Please see Figure 1 and Figure 4 The mine safety early warning monitor has proximity sensors 4 installed in both slider 1 324 and slider 2 325. The detection end 31 of the proximity sensor 4 faces into the hole 326 and is used to detect whether the straight bar 311 passes through the hole 326. If there is a high risk of landslide, the width of the crack will change rapidly, causing the straight bar 311 to come out of the hole 326. At this time, the proximity sensor 4 cannot detect the existence of the straight bar 311.

[0035] The proximity sensor 4 is a wireless sensor (using existing technology) that sends a wireless signal back to the receiver to provide an early warning. The mounting base 2 contains a battery (not shown in the figure) which powers the proximity sensor 4.

[0036] Please see Figure 1 and Figure 4 The mine safety early warning monitor has a threaded protrusion (not shown in the figure) at one end of the straight bar 311 and a threaded hole 312 at the other end. The threaded hole 312 and the threaded protrusion can be used to splice multiple sets of straight bars 311 in sequence to form a longer detection end 31.

[0037] This design ensures that the length of the detection end 31 is compatible with the width of the crack, while avoiding excessive length of the detection end 31, which could affect the early warning of landslides. During continuous patrols and inspections by the personnel, if the length of the detection end 31 is found to be insufficient, it can be extended at any time to keep the monitor in an effective monitoring state.

[0038] Please see Figures 1-5 The mine safety early warning monitor has a preliminary design frame 5 placed on both mounting base 1 and mounting base 2. During installation, the preliminary design frame 5 passes through the mounting slots opened on mounting base 1 and mounting base 2. Bolts 6 are provided on mounting base 1 and mounting base 2. By tightening the bolts 6 into the mounting slots, the preliminary design frame 5 can be pressed and fixed on mounting base 1 and mounting base 2. During the initial installation, mounting base 1 and mounting base 2 are fixed on both sides of the crack respectively. At the same time, the ends of the preliminary design frame 5 are adjusted to align with the edge of the crack so that the distance between the ends of the two sets of preliminary design frames 5 is exactly equal to the initial width of the crack when monitoring begins, or the distance between the ends of the two sets of preliminary design frames 5 is equal to zero, which is used as the initial monitoring value.

[0039] A set of straight bars 311 located at the end are tightened and fixed in the screw holes at the end of the initial frame 5 on the mounting base 1 by the threaded protrusions on them. By visually observing the values ​​on the straight bars 311, the real-time data of the crack width or the change value of the crack width can be obtained.

[0040] 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 mine safety early warning monitor, comprising two sets of mounting seats, mounting seat one (1) and mounting seat two (2) fixed on the front and back sides of the crack respectively, characterized in that: a multidirectional monitoring mechanism (3) is arranged between the mounting seat one (1) and the mounting seat two (2), and the multidirectional monitoring mechanism (3) is used for measuring the changes in the front and back width, left and right displacement and up and down displacement of the two sides of the crack. The multidirectional monitoring mechanism (3) is composed of a detection end (31) arranged on the mounting seat one (1) and a feedback end (32) arranged on the mounting seat two (2).

2. The mine safety early warning monitor of claim 1, wherein: The detection end (31) is movably connected with the feedback end (32), and the feedback end (32) is used for feeding back the position change of the detection end (31), so as to feed back the change in the crack development and expansion. The detection end (31) comprises a straight bar (311).

3. The mine safety early warning monitor of claim 1, wherein: The feedback end (32) comprises a measuring frame (321) fixed on the mounting seat two (2), the measuring frame (321) is a rectangular frame, a height feedback frame (322) vertically slides in the rectangular frame, and a horizontal displacement feedback frame (323) also horizontally slides in the rectangular frame, a sliding block one (324) horizontally slides on the height feedback frame (322), a sliding block two (325) vertically slides on the horizontal displacement feedback frame (323), the sliding block two (325) and the sliding block one (324) overlap front and back, and the straight bar (311) passes through the holes (326) on the sliding block two (325) and the sliding block one (324). The straight bar (311) is provided with a scale, and the vertical edges and horizontal edges of the rectangular frame are also provided with scales.

4. The mine safety early warning monitor of claim 3, wherein: The sliding block one (324) and the sliding block two (325) are both provided with a proximity sensor (4), and the detection end (31) of the proximity sensor (4) faces the hole (326) and is used for detecting whether the straight bar (311) is located in the hole (326).

5. The mine safety early warning monitor of claim 2, wherein: The detection end (31) is composed of one or more straight bars (311) spliced together, and the splicing mode is preferably threaded connection.

6. The mine safety early warning monitor of claim 3, wherein: The mounting seat one (1) and the mounting seat two (2) are both provided with a preliminary setting frame (5), the preliminary setting frame (5) is fixed on the mounting seat one (1) and the mounting seat two (2) by bolts (6), and the end of the preliminary setting frame (5) is aligned with the edge of the crack.

7. The mine safety early warning monitor of claim 6, wherein: The straight bar (311) located at the end is fixed at the end of the preliminary setting frame (5) on the mounting seat one (1). The measuring frame (321) is fixed on the end of the preliminary setting frame (5) on the mounting seat two (2). ​

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