Coal mine tunnel wind speed automatic measuring device

Abstract

The invention belongs to the technical field of roadway safety, and discloses a coal mine roadway wind speed automatic measuring device which comprises a wind speed support fixedly installed at the top end of a coal mine roadway, and a measuring assembly used for measuring the wind speed in the roadway is arranged on the wind speed support. The measuring assembly comprises a plurality of adjusting frames movably connected to the wind speed support. The ends, away from the wind speed support, of the adjusting frames are provided with anemometers used for measuring the wind speed in the roadway. The wind speed support comprises a mounting seat fixedly mounted at the top end of a roadway, a plurality of stages of telescopic lifting scissor-fork type lifting frames are arranged at the bottom end of the mounting seat, and the adjusting frames are rotationally connected to the two sides of the scissor-fork type lifting frames and can be driven by the scissor-fork type lifting frames to ascend and descend. The device is simple in structure and convenient to use, the efficiency and accuracy of measuring the wind speed in the roadway are greatly improved, and the safety of the roadway is improved; and meanwhile, the wind speed at different positions of the roadway can be measured through the telescopic arrangement, and normal work of the roadway is not affected.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel safety, and in particular relates to an automatic wind speed measuring device for a coal mine tunnel. Background Art

[0002] In coal mine production, appropriate wind speed in the tunnel can effectively deliver fresh air to the working area, while expelling harmful gases, dust and hot air, thereby maintaining good air quality, ensuring the health and safety of workers, improving work efficiency, and reducing the risk of explosion. It can also slow down the spread of disasters, buy time for rescue, and prevent moisture from condensing on the surface of equipment, reducing corrosion and damage to equipment; therefore, accurate measurement of tunnel wind speed is crucial to ensuring mine ventilation safety and preventing accidents such as gas accumulation and fire.

[0003] Existing tunnel wind speed measurement generally involves installing a device for measurement at a fixed position in the tunnel, such as a mechanical anemometer, an ultrasonic anemometer, and a thermistor anemometer; however, the above-mentioned anemometers are all fixedly installed, the position cannot be adjusted, and can only measure the wind speed at the installation location; at the same time, due to the fixed installation position and the fact that they are generally installed close to the inner wall of the tunnel, the data of the wind speed measurement are limited. If the anemometer is installed in the middle of the tunnel, it will affect the normal use of the tunnel, and the wind speed at each level of the tunnel cross section cannot be measured.

[0004] Therefore, the present application designs an automatic wind speed measuring device for coal mine tunnels to solve the above-mentioned technical problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention proposes an automatic wind speed measuring device for coal mine tunnels.

[0006] To achieve the above object, the present invention provides a coal mine tunnel wind speed automatic measuring device, comprising a wind speed bracket, the wind speed bracket is fixedly installed at the top of the coal mine tunnel, and the wind speed bracket is provided with a measuring component for measuring the wind speed in the tunnel;

[0007] The measuring assembly comprises a plurality of adjusting frames movably connected to the wind speed bracket, and an anemometer for measuring the wind speed in the lane is arranged at one end of the adjusting frame away from the wind speed bracket;

[0008] The wind speed support includes a mounting seat fixedly installed at the top of the tunnel, and a plurality of stages of retractable and liftable scissor-type lifting frames are arranged at the bottom end of the mounting seat. The adjustment frame is rotatably connected to both sides of the scissor-type lifting frames, and the adjustment frame can be lifted and lowered under the drive of the scissor-type lifting frames.

[0009] Preferably, the mounting seat comprises a guide rail hoisted at the top of the tunnel, a first leg at the top of the scissor-type lifting frame is rotatably connected to the end of the guide rail, and a second leg at the top of the scissor-type lifting frame is slidably connected to the guide rail.

[0010] Preferably, a slide groove is provided on the guide rail, a sliding block is movably connected in the slide groove, and the sliding block extends out of the slide groove and is drivingly connected to the second support leg.

[0011] Preferably, a first motor is provided on a side of the guide rail corresponding to the first support leg, and an output shaft of the first motor passes through the guide rail and is drivingly connected to the first support leg.

[0012] Preferably, a plurality of driving gears corresponding to the adjusting frame are arranged on both sides of the scissor-type lifting frame, and the driving gears are meshed and driven with driven gears connected to the ends of the adjusting frame.

[0013] Preferably, two symmetrically arranged lifting ears are provided at the top of the tunnel, and the two lifting ears are respectively fixed to the two ends of the guide rail.

[0014] Preferably, the adjustment frame comprises a plurality of first extension arms and a plurality of second extension arms, and the plurality of first extension arms and the plurality of second extension arms are respectively arranged on the left and right sides of the scissor-type lifting frame.

[0015] Preferably, the first extension arm and the second extension arm are respectively arranged at the front and rear sides of the scissor-type lifting frame.

[0016] Preferably, the scissor-type lifting frame includes a plurality of active connecting rods and driven connecting rods rotatably connected in the middle, a plurality of the active connecting rods are rotatably connected head to tail in sequence, and a plurality of the driven connecting rods are rotatably connected head to tail in sequence; the top end of the active connecting rod is transmission-connected to the first motor.

[0017] Compared with the prior art, the present invention has the following advantages and technical effects: the present invention discloses an automatic wind speed measuring device for a coal mine tunnel, wherein the wind speed bracket has the ability to be raised and lowered, and can drive the measuring component thereon to be raised and lowered, thereby measuring different positions of the tunnel, and the wind speed data obtained by measuring the wind speed in the tunnel is more accurate, thereby improving the accuracy of the wind speed measurement; after the measurement, the measuring component is folded up by the wind speed bracket, and the normal traffic and practicality of the tunnel are not affected; at the same time, the setting of the liftable wind speed bracket enables the entire device to measure tunnels of different specifications, and has higher adaptability; the scissor-type lifting frame of the wind speed bracket is fixed to the top of the tunnel through a mounting seat, and the power for deflection is provided by the power member on the mounting seat, thereby adjusting the lifting height of the scissor-type lifting frame, and thereby adjusting the height and angle of the adjusting frame, thereby measuring the wind speed of different areas through the anemometer.

[0018] The present invention has a simple structure and is easy to use, greatly improving the efficiency and accuracy of wind speed measurement in the tunnel and improving the safety of the tunnel; at the same time, the retractable setting can measure the wind speed at different positions of the tunnel without affecting the normal operation of the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 This is an axial view of the automatic wind speed measuring device for coal mine tunnels of the present invention;

[0021] Figure 2 This is a front view of the automatic wind speed measuring device for coal mine tunnels of the present invention;

[0022] Figure 3 It is a side view of the automatic wind speed measuring device for coal mine tunnels of the present invention;

[0023] Figure 4 This is an axial view of the scissor-type lifting frame of the present invention;

[0024] Figure 5 This is a schematic diagram of the installation of the automatic wind speed measuring device in a coal mine tunnel of the present invention;

[0025] In the figure: 1. wind speed bracket; 2. adjustment frame; 3. anemometer; 4. scissor-type lifting frame; 5. guide rail; 6. slide groove; 7. slide block; 8. first support leg; 9. first motor; 10. second support leg; 11. driving gear; 12. driven gear; 13. lifting ear; 14. first extension arm; 15. second extension arm; 16. driving connecting rod; 17. driven connecting rod; 18. motor seat; 20. tunnel. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Reference Figure 1-Figure 5As shown, this embodiment provides an automatic wind speed measuring device for a coal mine tunnel, comprising a wind speed bracket 1, the wind speed bracket 1 is fixedly installed at the top of a tunnel 20 of a coal mine, and a measuring component for measuring the wind speed in the tunnel 20 is arranged on the wind speed bracket 1;

[0029] The measuring assembly includes a plurality of adjusting frames 2 movably connected to the wind speed support 1, and an anemometer 3 for measuring the wind speed in the tunnel 20 is arranged at one end of the adjusting frame 2 away from the wind speed support 1;

[0030] The wind speed support 1 includes a mounting base fixedly installed at the top of the tunnel 20, and a plurality of stages of retractable and liftable scissor-type lifting frames 4 are arranged at the bottom of the mounting base. The adjusting frame 2 is rotatably connected to both sides of the scissor-type lifting frames 4, and the adjusting frame 2 can be lifted and lowered under the drive of the scissor-type lifting frames 4.

[0031] The present invention discloses an automatic wind speed measuring device for a coal mine tunnel 20. The wind speed support 1 has the ability of lifting and adjusting, and can drive the measuring component thereon to lift and lower, thereby measuring different positions of the tunnel 20. The wind speed data obtained by measuring the wind speed in the tunnel 20 is more accurate, thereby improving the accuracy of the wind speed measurement. After the measurement, the measuring component is put away by the wind speed support 1, which will not affect the normal traffic and use of the tunnel 20. At the same time, the setting of the liftable wind speed support 1 enables the entire device to measure tunnels 20 of different specifications, and has higher adaptability. The scissor-type lifting frame 4 of the wind speed support 1 is fixed to the top of the tunnel 20 through a mounting seat, and the power for deflection is provided by the power member on the mounting seat, thereby adjusting the lifting height of the scissor-type lifting frame 4, thereby adjusting the height and angle of the adjustment frame 2, and thereby measuring the wind speed of different areas through the anemometer 3. The present invention has a simple structure and is easy to use, which greatly improves the efficiency and accuracy of wind speed measurement in the tunnel 20 and improves the safety of the tunnel 20. At the same time, the retractable setting can measure the wind speed at different positions of the tunnel 20 without affecting the normal operation of the tunnel 20.

[0032] In a further optimized solution, the mounting base includes a guide rail 5 hoisted at the top of the lane 20, a first leg 8 at the top of the scissor-type lifting frame 4 is rotatably connected to the end of the guide rail 5, and a second leg 10 at the top of the scissor-type lifting frame 4 is slidably connected to the guide rail 5. The guide rail 5 is horizontally fixed at the top of the lane 20, the first leg 8 is rotatably connected to one end of the guide rail 5, and the second leg 10 is slidably connected to the guide rail 5; when driven by the outside, the second leg 10 slides on the guide rail 5, so that the scissor-type lifting frame 4 is lifted and lowered, thereby driving the adjustment frame 2 to lift and lower.

[0033] In a further optimized solution, a slide groove 6 is provided on the guide rail 5, a slider 7 is movably connected in the slide groove 6, and the slider 7 extends out of the slide groove 6 and is transmission-connected to the second leg 10. The slider 7 is slidably fixed on the second leg 10, and the slider 7 is a square structure, which can be translated left and right in the rectangular slide groove 6, thereby enabling the scissor-type lifting frame 4 to achieve lifting and lowering movement.

[0034] In one embodiment of the present application, the slider 7 can be replaced by a roller, and the roller rolls in the slide groove 6, which can reduce sliding friction and extend the service life.

[0035] In a further optimized solution, a first motor 9 is provided on one side of the guide rail 5 corresponding to the first leg 8, and the output shaft of the first motor 9 passes through the guide rail 5 and is transmission-connected to the first leg 8. The output shaft of the first motor 9 has a keyway, which is fixedly connected to the connection hole on the first leg 8, thereby driving the first leg 8 to actively move, thereby playing a regulating role for the scissor lift.

[0036] In one embodiment of the application, the first motor 9 adopts an explosion-proof stepper motor, the rotation angle of which is controllable and more flexible. At the same time, the explosion-proof property can ensure the normal use of the stepper motor in the lane 20.

[0037] In one embodiment of the application, a motor seat 18 is provided on one side of the guide rail 5 corresponding to the first support leg 8 , and the first motor 9 is fixedly mounted on the motor seat 18 by bolts.

[0038] Further optimization scheme, a plurality of driving gears 11 are arranged on both sides of the scissor-type lifting frame 4 corresponding to the adjustment frame 2, and the driving gears 11 are meshed with the driven gears 12 connected to the end of the adjustment frame 2. The driving gears 11 are fixed on both sides of the scissor-type lifting frame 4, and the driven gears 12 are fixed on the end of the adjustment frame 2. The driving gears 11 are meshed with the driven gears 12. When the scissor-type lifting frame 4 is lifted or lowered, the driving gears 11 rotate, thereby driving the driven gears 12 to transmit, so that the adjustment frame 2 is deflected and adjusted.

[0039] To further optimize the solution, two symmetrically arranged lifting ears 13 are provided at the top of the lane 20, and the two lifting ears 13 are respectively fixed to the two ends of the guide rail 5. The two lifting ears 13 are embedded in the top of the lane 20, and the two ends of the guide rail 5 are fixed to the two ends of the guide rail 5 by bolts, thereby fixing the entire device at the top of the lane 20, which is convenient for suspending the entire device.

[0040] In a further optimized solution, the adjustment frame 2 includes a plurality of first extension arms 14 and a plurality of second extension arms 15, which are respectively arranged on the left and right sides of the scissor-type lifting frame 4. The plurality of first extension arms 14 and the plurality of second extension arms 15 are respectively arranged on both sides of the scissor-type lifting frame 4, and can drive the speed meter to open to both sides.

[0041] In one embodiment of the present embodiment, the lengths of the first extension arms 14 are different, and the lengths of the second extension arms 15 are also different, so as to avoid interference.

[0042] In a further optimized solution, the first extension arm 14 and the second extension arm 15 are respectively arranged at the front and rear sides of the scissor lift 4. The first extension arm 14 and the second extension arm 15 are arranged at the front and rear sides of the scissor lift 4, so that the first extension arm 14 and the second extension arm 15 are staggered to avoid mutual interference.

[0043] Further optimization scheme, the scissor lift frame 4 includes a number of active connecting rods 16 and driven connecting rods 17 that are rotatably connected in the middle, a number of active connecting rods 16 are rotatably connected head to tail in sequence, and a number of driven connecting rods 17 are rotatably connected head to tail in sequence; the top of the active connecting rod 16 at the top is transmission-connected to the first motor 9. The active connecting rod 16 and the driven connecting rod 17 are of equal length, and are each provided with three holes, and the positions of the holes are the same. The holes in the middle of the active connecting rod 16 and the driven connecting rod 17 are connected by a pin shaft; a number of active connecting rods 16 are hinged head to tail in sequence, and a number of driven connecting rods 17 are hinged head to tail in sequence, and can drive the adjustment frame 2 to rise and fall under the drive of the first motor 9.

[0044] In one embodiment of the present application, when the scissor lift 4 is unfolded, the first extension arm 14 and the second extension arm 15 are downward, and the distance between the lowest end and the guide rail 5 is no more than 3m, and the extension or closure in the lane 20 will not be interfered by the wall or the ground.

[0045] In one embodiment of the present application, the active connecting rod 16 and the driven connecting rod 17 are made of a hollow rectangular tube with a width of 40 mm and a height of 10 mm, which has high structural strength and can remain stable during the wind measurement process.

[0046] When the first motor 9 rotates, it drives the active connecting rod 16 to deflect, and the slider 7 on the driven connecting rod 17 translates along the slide 6 together, and the active connecting rod 16 rotates relative to the driven connecting rod 17, thereby realizing telescoping; at the same time, the active gear 11 rotates together, and the passive gear will be passively rotated, driving the fixedly connected first extension arm 14 and the second extension arm 15 to extend. Since the movements of the first extension arm 14 and the second extension arm 15 on the left and right sides are completely the same symmetrical movements, they will extend synchronously. The six extension arms are unfolded at the same time until the extension arm rotates to the horizontal position, and the first motor 9 stops rotating and brakes under the action of the controller. At this time, the anemometer 3 reaches the set wind measurement point and measures the wind. After the wind measurement is completed, it is necessary to reduce the occupation of the space of the lane 20 by the extended state bracket and retract the bracket. At this time, the first motor 9 rotates in the opposite direction, and the scissor-type lifting frame 4 is retracted upward. At the same time, the first extension arm 14 and the second extension arm 15 are retracted and closed until they are closed to the set position, and then the first motor 9 stops rotating and brakes the motor shaft.

[0047] Device advantages:

[0048] No complicated cables are needed, only one explosion-proof stepper motor is needed to power the device, which reduces the manufacturing cost of the device. The more parts there are in the system, the easier it is to damage the system, which reduces the probability of system failure.

[0049] The structure is more optimized, and the device can be retracted after the wind measurement is completed, and the space occupied after retraction is small, which reduces the space occupied by the lane 20 when not working;

[0050] By remotely controlling the first motor 9 and the anemometer 3 switch, the wind speed and other parameters at each point can be measured, and the device has a high degree of automation.

[0051] The lengths of the adjustment frame 2 and the scissor-type lifting frame 4 can be changed to adapt to lanes 20 with different cross-sections. The device can be applicable to lanes 20 of different sizes and has greater applicability.

[0052] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0053] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An automatic wind speed measuring device for coal mine tunnels, characterized by: It comprises a wind speed bracket (1), the wind speed bracket (1) is fixedly installed at the top of a tunnel (20) in a coal mine, and a measuring component for measuring the wind speed in the tunnel (20) is arranged on the wind speed bracket (1); The measuring assembly comprises a plurality of adjustment frames (2) movably connected to the wind speed support (1); an anemometer (3) for measuring the wind speed in the tunnel (20) is provided at one end of the adjustment frame (2) away from the wind speed support (1); The wind speed support (1) comprises a mounting seat fixedly mounted on the top of the tunnel (20); a plurality of stages of telescopic scissor-type lifting frames (4) are arranged at the bottom of the mounting seat; the adjustment frame (2) is rotatably connected to both sides of the scissor-type lifting frames (4); and the adjustment frame (2) can be raised and lowered under the drive of the scissor-type lifting frames (4).

2. The automatic wind speed measuring device for coal mine tunnel according to claim 1 is characterized in that: The mounting seat comprises a guide rail (5) hoisted at the top of the laneway (20), a first support leg (8) at the top of the scissor-type lifting frame (4) is rotatably connected to the end of the guide rail (5), and a second support leg (10) at the top of the scissor-type lifting frame (4) is slidably connected to the guide rail (5).

3. The automatic wind speed measuring device for coal mine tunnel according to claim 2 is characterized in that: The guide rail (5) is provided with a slide groove (6), and a slider (7) is movably connected in the slide groove (6). The slider (7) extends out of the slide groove (6) and is drivingly connected to the second support leg (10).

4. The automatic wind speed measuring device for coal mine tunnel according to claim 2 is characterized in that: A first motor (9) is provided on one side of the guide rail (5) corresponding to the first support leg (8); an output shaft of the first motor (9) passes through the guide rail (5) and is drivingly connected to the first support leg (8).

5. The automatic wind speed measuring device for coal mine tunnel according to claim 1 is characterized in that: A plurality of driving gears (11) corresponding to the adjusting frame (2) are arranged on both sides of the scissor-type lifting frame (4), and the driving gears (11) are meshed and driven with driven gears (12) connected to the ends of the adjusting frame (2).

6. The automatic wind speed measuring device for coal mine tunnel according to claim 2 is characterized in that: Two symmetrically arranged lifting ears (13) are provided at the top of the lane (20), and the two lifting ears (13) are respectively fixed to the two ends of the guide rail (5).

7. The automatic wind speed measuring device for coal mine tunnel according to claim 1 is characterized in that: The adjustment frame (2) comprises a plurality of first extension arms (14) and a plurality of second extension arms (15), wherein the plurality of first extension arms (14) and the plurality of second extension arms (15) are respectively arranged on the left and right sides of the scissor-type lifting frame (4).

8. The automatic wind speed measuring device for coal mine tunnels according to claim 7 is characterized in that: The first extension arm (14) and the second extension arm (15) are respectively arranged on the front and rear sides of the scissor-type lifting frame (4).

9. The automatic wind speed measuring device for coal mine tunnel according to claim 4 is characterized in that: The scissor-type lifting frame (4) comprises a plurality of active connecting rods (16) and driven connecting rods (17) which are rotatably connected in the middle, wherein the plurality of active connecting rods (16) are rotatably connected head to tail in sequence, and the plurality of driven connecting rods (17) are rotatably connected head to tail in sequence; and the top end of the active connecting rod (16) is drivingly connected to the first motor (9).

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