Mining laser scanning surrounding rock surface displacement real-time monitoring device

Abstract

The utility model discloses a mining laser scanning surrounding rock surface displacement real-time monitoring device which comprises an outer shell fixedly installed at the top position in a roadway surrounding rock through an anchor cable, and further comprises a motor, a laser element and an electromagnetic induction power supply device. One end of the outer shell is provided with a protruding transparent window, the laser element is located in the protruding transparent window, and the laser element is used for emitting laser for distance measurement to the outside of the protruding transparent window. The motor is fixedly installed in the outer shell and used for driving the laser element to rotate. The electromagnetic induction power supply device is located in the outer shell and used for supplying power to the laser element. The device is high in integration level, reasonable in structure, high in measurement speed and high in precision, can realize automatic measurement and data processing, reduces manual intervention and labor intensity, and reduces errors caused by human factors.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel surrounding rock displacement monitoring, in particular to a mine-used laser scanning surrounding rock surface displacement real-time monitoring device. Background Art

[0002] At present, the surface displacement monitoring of surrounding rock in underground coal mine tunnels is realized by combining multiple sensors, such as Figure 3 and Figure 4 As shown in the figure, according to the latest KA / T 11-2013 "Observation Method for Pressure Manifestation in Coal Mine Tunnel" issued by the State Administration of Work Safety, the standard requires that the monitoring of surrounding rock surface displacement should at least be able to realize the monitoring of the roadway roof and floor movement, the two side movement, the roof sinking, the bottom heave, the right side movement, and the left side movement. To realize the monitoring of these six displacements, at least six displacement sensors should be installed on one section, which is a large project with high cost and mutual interference between sensors. Most of these six displacement sensors are measured by pulling ropes, which have large measurement errors, many fault points, and particularly complex transmission lines. In particular, the bottom heave displacement sensor and the roof and bottom plate displacement sensor are installed with wire ropes or scales on both sides of the roadway, which affects the traffic capacity of the roadway. Summary of the Invention

[0003] The purpose of the utility model is to provide a mine-used laser scanning surrounding rock surface displacement real-time monitoring device, which solves the problems of large measurement error and complex operation proposed in the above background technology through setting.

[0004] According to one aspect of the present disclosure, the following technical solution is provided: a mine-use laser scanning surrounding rock surface displacement real-time monitoring device, comprising an outer housing fixedly mounted at a top position within a tunnel surrounding rock by an anchor cable, and further comprising a motor, a laser element, and an electromagnetic induction power supply device;

[0005] A protruding transparent window is provided at one end of the outer shell, and the laser element is located in the protruding transparent window, and the laser element is used to emit laser light for distance measurement out of the protruding transparent window;

[0006] The motor is fixedly installed inside the outer shell and is used to drive the laser element to rotate;

[0007] The electromagnetic induction power supply device is located in the outer shell and is used to supply power to the laser element.

[0008] According to at least one embodiment of the present disclosure, a real-time monitoring device for the displacement of surrounding rock surfaces by laser scanning for mining is disclosed, wherein the laser element includes a turntable and a laser rangefinder. The turntable is located inside a protruding transparent window, the turntable is fixedly connected to the output shaft of the motor, and the laser rangefinder is fixedly mounted on the outer surface of the turntable.

[0009] According to at least one embodiment of the present disclosure, a real-time monitoring device for surface displacement of surrounding rocks by laser scanning for mining, the electromagnetic induction power supply device includes a generating stator and a generating rotor. The generating stator is fixedly installed between the motor and the turntable inside the outer shell, and the generating rotor is fixedly installed on the side surface of the turntable close to the motor position.

[0010] According to at least one embodiment of the present disclosure, a real-time monitoring device for surface displacement of surrounding rocks by laser scanning for mining is provided, wherein a control mainboard is fixedly installed inside the outer shell, and the control mainboard is used to convert the received data measured by the laser rangefinder into an RS signal through a single-chip microcomputer program, and exchange the data with the host computer.

[0011] According to the real-time monitoring device for displacement of surrounding rock surface by laser scanning for mining of at least one embodiment of the present disclosure, a Bluetooth module is installed inside the turntable, and the Bluetooth module is used to control data exchange between the main board and the host computer.

[0012] According to the real-time monitoring device for surface displacement of surrounding rocks by laser scanning for mining of at least one embodiment of the present disclosure, the protruding transparent window adopts a high-strength resin transparent cover, the surface of which is coated with a nano-scale silicone film.

[0013] Technical effects and advantages of this utility model:

[0014] 1. High integration: The device integrates modules, dynamic scanning, laser ranging, and data transmission. It only needs to be connected to the power supply and communication lines to map the surface profile of the entire measured space in real time. It can replace the combination of multiple displacement measurement sensors in various ways.

[0015] 2. Reasonable structure, the whole device has no mechanical contact, the rotating power supply has no contact, no noise, no friction, and long service life.

[0016] 3. The monitoring range is large. In addition to the laser ranging function, the dynamic rotation function is added. It can display the precise distance of every 0.1 angle within the 360-degree angle of the measured space, and can also display the precise distance between any two points within the scanning range. At the same time, based on the collected data, the entire scanned space model can be simulated, which can provide real-time and accurate data to various systems.

[0017] 4. The measurement speed is fast and highly sensitive. The scanning frequency can be set within 10-50 Hz. Calculated at a frequency of 10 Hz, one data point is collected every 0.1 degree, and 3600 data points can be collected per second. In this way, the displacement change within every 0.1 second can be measured.

[0018] 5. High precision, can accurately measure the shape, size and position of the tunnel surrounding rock, truly reflect the actual situation of the measured surrounding rock, and provide reliable data support for subsequent analysis, design and decision-making.

[0019] 6. High efficiency, it can obtain spatial data of a large area in a short time, greatly shortening the measurement cycle.

[0020] 7. Non-contact measurement will not cause damage to the surrounding rock being measured, and there is no need for drilling or burying. It can also be used for measurement in dangerous or hard-to-reach environments, such as high temperature, high pressure, toxic and harmful environments, which improves the safety and flexibility of measurement and is particularly suitable for monitoring the harsh environment of coal mines.

[0021] 8. High degree of automation. The device can realize automatic measurement and data processing, reduce manual intervention and labor intensity, and reduce errors caused by human factors. At the same time, with the corresponding software, it can also realize automatic identification, classification and analysis functions, thereby improving work efficiency and measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0023] Figure 1 This is a structural diagram of a mine-used laser scanning surrounding rock surface displacement real-time monitoring device of the utility model.

[0024] Figure 2 The utility model is a schematic diagram of the installation state of a mine-used laser scanning surrounding rock surface displacement real-time monitoring device.

[0025] Figure 3 It is a structural diagram of a surrounding rock surface displacement monitoring device in the prior art.

[0026] Figure 4 It is a structural diagram of a bottom drum monitoring device using two-gang convergence amount in the prior art.

[0027] The specific reference numerals in the figure are:

[0028] Outer shell; 2. Protruding transparent window; 3. Anchor cable; 4. Motor; 5. Control main board; 6. Laser element; 61. Turntable; 62. Laser rangefinder; 63. Bluetooth module; 7. Electromagnetic induction power supply device; 71. Generating stator; 72. Generating rotor. DETAILED DESCRIPTION

[0029] For descriptive purposes, this disclosure may use spatially relative terms, such as "below," "beneath," "beneath," "below," "above," "upper," and "side (e.g., as in "sidewall")," to describe the relationship of one component to another component(s) as illustrated in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the drawings. For example, if the device in the drawings is turned over, a component described as "below" or "beneath" another component or feature would then be oriented "above" the other component or feature. Thus, the exemplary term "below" can encompass both "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and as such, the spatially relative descriptors used herein should be interpreted accordingly.

[0030] like Figure 1 As shown, the present disclosure discloses a mine laser scanning surrounding rock surface displacement real-time monitoring device, comprising an outer shell 1 fixedly installed at the top position of the tunnel surrounding rock through an anchor cable 3, and also comprising a motor 4, a laser element 6 and an electromagnetic induction power supply device 7;

[0031] A protruding transparent window 2 is provided at one end of the outer shell 1, and the laser element 6 is located in the protruding transparent window 2. The laser element 6 is used to emit laser light for distance measurement out of the protruding transparent window 2;

[0032] The motor 4 is fixedly installed inside the outer shell 1 and is used to drive the laser element 6 to rotate. The motor 4 is a brushless motor.

[0033] The electromagnetic induction power supply device 7 is located in the outer shell 1 and is used to supply power to the laser element 6 .

[0034] In this embodiment, the laser element 6 includes a turntable 61 and a laser rangefinder 62. The turntable 61 is located inside the protruding transparent window 2 and is fixedly connected to the output shaft of the motor 4. To ensure the smooth rotation of the turntable 61, the output shaft of the motor 4 is fixedly passed through the middle of the turntable 61, and one end of the output shaft is inserted into a bearing provided on the inner wall of the protruding transparent window 2. The laser rangefinder 62 is fixedly mounted on the outer surface of the turntable 61. The direction of the laser emitted by it is as follows: Figure 1 Indicated by the arrow direction.

[0035] In this embodiment, the electromagnetic induction power supply device 7 includes a generator stator 71 and a generator rotor 72. The generator stator 71 is fixedly installed between the motor 4 and the turntable 61 inside the outer shell 1, and the generator rotor 72 is fixedly installed on the side surface of the turntable 61 close to the motor 4.

[0036] The above-mentioned generating stator 71 is a magnet with magnetic poles, and the generating rotor 72 is an electromagnetic induction coil. When it rotates around the magnet, the electromagnetic induction coil will generate current, which will be transmitted to the laser rangefinder 62 or Bluetooth module 63 through the internal wires of the turntable 61.

[0037] In this embodiment, a control mainboard 5 is fixedly installed inside the outer shell 1. The control mainboard 5 is used to convert the distance data received from the laser rangefinder 62 into RS485 signals through the single-chip microcomputer program and exchange data with the host computer.

[0038] Furthermore, to facilitate data transmission, in this embodiment, a Bluetooth module 63 is installed inside the turntable 61 , and the Bluetooth module 63 is used to control data exchange between the mainboard 5 and the host computer.

[0039] In this embodiment, the protruding transparent window 2 is made of a high-strength resin transparent cover, the surface of which is coated with a nano-scale silicone film to prevent dust and moisture from depositing, thereby ensuring that it can work in the dusty environment of the coal mine.

[0040] Based on the above monitoring device, its specific working steps are as follows: Figure 2 As shown, the detection device of the present invention is installed at the top position in the surrounding rock, the scanning frequency of the laser rangefinder 62 is set within 10-50 Hz, and the frequency is calculated at 10 Hz. The turntable 61 is driven to rotate by the motor 4, so that the laser rangefinder 62 collects one data every 0.1 angle, and 3600 data can be collected per second. In this way, the displacement change of the surrounding rock every 0.1 second can be measured, and the precise distance between any two points in the scanning range can also be displayed. At the same time, based on the collected data, the entire scanned space model can be simulated, and real-time accurate data can be provided to various systems.

[0041] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0043] Those skilled in the art will appreciate that the above embodiments are merely intended to clearly illustrate the present disclosure and are not intended to limit the scope of the present disclosure. Other changes or modifications may be made based on the above disclosure, and such changes or modifications are still within the scope of the present disclosure.

Claims

1. A mine-use laser scanning device for real-time monitoring of surrounding rock surface displacement, comprising an outer shell fixedly mounted at the top of a tunnel surrounding rock by an anchor cable, characterized in that: It also includes a motor, a laser element and an electromagnetic induction power supply device; A protruding transparent window is provided at one end of the outer shell, and the laser element is located in the protruding transparent window, and the laser element is used to emit laser light for distance measurement out of the protruding transparent window; The motor is fixedly installed inside the outer shell and is used to drive the laser element to rotate; The electromagnetic induction power supply device is located in the outer shell and is used to supply power to the laser element.

2. The mine laser scanning surrounding rock surface displacement real-time monitoring device according to claim 1 is characterized by: The laser element includes a turntable and a laser rangefinder. The turntable is located inside the protruding transparent window and is fixedly connected to the output shaft of the motor. The laser rangefinder is fixedly installed on the outer surface of the turntable.

3. The mine laser scanning surrounding rock surface displacement real-time monitoring device according to claim 2 is characterized by: The electromagnetic induction power supply device includes a power generation stator and a power generation rotor. The power generation stator is fixedly installed between the motor and the turntable inside the outer shell, and the power generation rotor is fixedly installed on a side surface of the turntable close to the motor.

4. The mine laser scanning surrounding rock surface displacement real-time monitoring device according to claim 3 is characterized by: A control mainboard is fixedly installed inside the outer shell. The control mainboard is used to convert the received data measured by the laser rangefinder into an RS signal through a single-chip microcomputer program and exchange the data with the host computer.

5. The mine laser scanning surrounding rock surface displacement real-time monitoring device according to claim 4 is characterized by: A Bluetooth module is installed inside the turntable, and the Bluetooth module is used to control data exchange between the main board and the host computer.

6. The mine laser scanning surrounding rock surface displacement real-time monitoring device according to claim 1 is characterized by: The protruding transparent window adopts a high-strength resin transparent cover, the surface of which is coated with a layer of nano-scale silicone film.

Images