Speed of sound temperature control type electric cutting monitoring device for chamber roof cutting

Abstract

The application provides a sound velocity temperature control type electric cutting monitoring device for chamber roof cutting, which comprises a sound wave emitting system, a sound wave emitting device, a sound wave receiving input system, a data analysis and early warning system, a secondary cutting control system, a secondary cutting auxiliary system and a multifunctional cutting integrated device. The device adjusts the sound wave velocity by changing the air temperature, thereby emitting the sound wave to accurately determine the cutting depth, quantitatively judges the roof cutting depth index, and continuously cuts the position where the roof is not completely cut. In addition, the device has the advantages of good universality, low cost, reliable performance, easy operation and the like.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of deep underground engineering resource mining. BACKGROUND

[0002] Resources are an important basis for the development of the national economy, and the healthy development of China's economy cannot be separated from the safe supply of resources. With the increasing depletion of shallow resources, the safe mining of deep underground resources is an important guarantee for national resource security. Deep underground resource mining is different from shallow mining, mainly because its occurrence environment has the characteristics of high ground stress, high permeable water pressure, high ground temperature and strong mining disturbance, which is prone to cause supporting body failure, roof subsidence and other disasters.

[0003] For a long time, deep resource mining is mainly based on the longwall mining 121 method of masonry beam theory and transfer rock beam theory, that is, 2 adits are excavated for each working face, and a coal pillar is left to maintain the stability of the roadway. The main disadvantage of this method is that a long and insufficiently collapsed suspended roof is formed on the side of the goaf, which is not conducive to the stability maintenance and safe mining of the roadway.

[0004] In order to solve the above problems from the root, the 110 method based on the shortwall beam theory of cutting roof is born, its main scientific thought is to change the traditional "one side double lane" into "one side single lane" mining mode, that is, only one adit needs to be excavated for each working face, and the other one is formed by cutting the roof and unloading pressure. The key technology of 110 method is directional pre-splitting cutting of roof, whether the roof is cut off is crucial, which is directly related to the stress transfer path between roof rock beams and whether the roof accurately collapses on the floor to form the side of the mining roadway. When the existing 110 method performs directional pre-splitting cutting of the roof, it mainly uses the method of drilling holes first and then installing energy-gathering tubes to blast the roof to cut the seam. The judgment of the cutting effect of the roof is mainly qualitative judgment through professional instruments to observe the crack quality, whether the crack is connected into a straight line, and the roof subsidence amount. However, it is still a big problem that the cutting depth of the roof is difficult to quantitatively measure and the cutting rate of the roof is difficult to digitally control. SUMMARY

[0005] In order to overcome the problem that the cutting depth of the roof is difficult to quantitatively measure and the cutting rate of the roof is difficult to digitally control, the application provides a sound velocity temperature control type electric cutting monitoring device for chamber roof cutting, which can effectively measure the cutting depth, ensure that the roof cutting crack is connected in a straight line, and ensure the cutting of the stress transfer path between the roof rock beams. The device is convenient to construct, simple to operate, low in cost, reliable in performance, and can real-time early warning of the roof cutting quality.

[0006] TECHNICAL SCHEME

[0007] The utility model relates to a kind of acoustic velocity temperature control type electric cutting monitoring device for chamber roof cutting, including acoustic wave emission system, acoustic wave emission device 6, acoustic wave receiving input system 2, data analysis early warning system 3, secondary cutting control system 4, secondary cutting auxiliary system 5, multifunctional cutting integrated device 7, wherein:

[0008] The acoustic wave emission system is used to measure the temperature of the air inside the acoustic wave emission device 6 and display it on the high-definition display screen 17. It controls the emission and stop of acoustic waves from the acoustic wave emission device 6 and transmits data signals to the acoustic wave receiving input system 2 through transmission wires.

[0009] The acoustic wave receiving input system 2 receives the acoustic wave emission data transmitted by the acoustic wave emission system and transmits it to the data analysis early warning system 3.

[0010] The data analysis early warning system 3 analyzes the acoustic wave data output by the acoustic wave receiving input system 2, calculates the actual cutting depth of the project, compares it with the preset standard cutting depth, and sends an early warning signal based on the comparison result. The early warning signal is used to determine whether secondary cutting treatment is needed for the test point.

[0011] The multifunctional cutting integrated device 7 is used for re-cutting the roof of the rock mass. The secondary cutting control system 4 is used to break the rock and soil of the roof that needs secondary cutting, the secondary cutting auxiliary system 5 is used to soften the rock and soil of the roof, and high-voltage current is used to electrically explode the roof.

[0012] Further, the data analysis early warning system 3 is used for analysis, and the acoustic wave emission system is used to change the air temperature to adjust the acoustic wave speed of the acoustic wave emission device 6, so as to accurately measure the cutting depth by emitting acoustic waves.

[0013] The cutting depth can be calculated and measured by the changed acoustic velocity and the time from the emission of acoustic waves to the re-reception.

[0014] The formula for calculating the changed acoustic velocity V is as follows:

[0015]

[0016] In the formula, T is the temperature in the chamber of the acoustic wave emission device.

[0017] The formula for calculating the cutting depth H is as follows:

[0018] H = Vt / 2

[0019] In the formula, t is the time from the emission of acoustic waves to the re-reception.

[0020] The second continuous cutting is performed on the incomplete cutting part of the top plate; when the incomplete cutting part of the top plate appears, the data analysis early warning system 3 gives an early warning, and then based on the cutting depth obtained by detection, through the joint action of the multifunctional top cutting integrated device 7, the secondary top cutting control system 4 and the secondary top cutting auxiliary system 5, the high-voltage current is released instantaneously to complete the secondary cutting operation.

[0021] Further, the sound wave emitting system comprises a temperature measuring element 101, a sound wave emitting system power supply 102, a temperature adjusting button 103, a temperature adjusting element 104, a first time relay 105, a sound wave generator switch 106, wherein:

[0022] The temperature measuring element 101 is connected with the heat absorbing material 601 of the sound wave emitting device 6 at one end and connected with the sound wave emitting system power supply 102 and the temperature adjusting element 104 at the other end, for measuring the internal air temperature of the sound wave emitting device 6 and displaying the temperature on the high-definition display screen 17, and transmitting the data signal to the sound wave signal converter 204 of the sound wave receiving input system 2 through the transmission wire;

[0023] The temperature adjusting button 103 is arranged on the side wall of the sound velocity temperature control type electric cutting monitoring device and connected with the temperature adjusting element 104 through the transmission wire, and the purpose is to adjust the resistance value of the temperature adjusting element 104;

[0024] The temperature adjusting element 104 is connected with the spiral coil 607 of the sound wave emitting device 6 through the transmission wire, and the purpose is to control the current size by changing the internal resistance size to control the temperature;

[0025] The first time relay 105 is connected with the sound wave generator switch 106 and the sound wave signal converter 204 of the sound wave receiving input system 2 through the transmission wire respectively;

[0026] The sound wave generator switch 106 is arranged on the side wall of the sound velocity temperature control type electric cutting monitoring device, and the function is to control the generation and stop of the sound wave generator 611 of the sound wave emitting device 6.

[0027] Further, the sound wave receiving input system 2 comprises a sound wave input screening device 201, an input sound wave analysis processing device 202, a sound wave data storage device 203, a sound wave signal converter 204 and a sound wave receiver 205, wherein:

[0028] The sound wave input screening device 201, the input sound wave analysis processing device 202, the sound wave signal converter 204 and the sound wave receiver 205 are all arranged in two and symmetrically distributed on the left and right sides; the sound wave input screening device 201 is connected with the sound wave signal converter 204 and the input sound wave analysis processing device 202 through wires respectively; the input sound wave analysis processing device 202 is connected with the sound wave data storage device 203 through wires;

[0029] The sound wave signal converter 204 is connected with the sound wave input screening device 201, the sound wave receiver 205, the first time relay 105 of the sound wave emission system and the temperature adjusting element 104 of the sound wave emission system respectively through wires, and functions to convert the received sound wave signal, temperature signal and time signal into an electric signal and transmit the electric signal to the sound wave input screening device 201.

[0030] Further, the data analysis and early warning system 3 comprises a roof cutting depth preset standard element 301, a data analysis and processing element 302, a roof cutting depth data comparison element 303, an early warning signal input element 304, an early warning signal analysis output element 305 and an early warning indicator 306, wherein:

[0031] The roof cutting depth preset standard element 301 is connected with the sound wave data storage device 203 through one end of a wire and connected with the data analysis and processing element 302 and the roof cutting depth data comparison element 303 through the other end of the wire. In actual construction, according to the roof cutting control index, the standard roof cutting depth preset in the roof cutting depth preset standard element 301 is recorded as h0.

[0032] The data analysis and processing element 302 functions to analyze and process the data in the sound wave data storage device 203 by using a pre-designed calculation formula (wherein T is temperature and t is time), calculate the actual roof cutting depth, recorded as h1, and transmit the result to the roof cutting depth data comparison element 303 for comparison.

[0033] The judgment standard is that the standard roof cutting depth h0 of the roof cutting depth preset standard element 301 is compared with the actual roof cutting depth h1 calculated by the data analysis and processing element 302. When the result shows that the input roof cutting depth signal is within the range of the roof cutting depth preset standard element 301, i.e. h1∈h0, it is determined that the input signal meets the safety standard. When the result shows that the input roof cutting depth signal is outside the range of the roof cutting depth preset standard element 301, i.e. it is determined that the input signal does not meet the safety standard. Finally, the result signal is transmitted to the early warning signal input element 304.

[0034] The early warning signal input element 304 takes the final output result of the roof cutting depth data comparison element 303 as an input signal and converts the input signal into an electric signal and transmits the electric signal to the early warning signal analysis output element 305.

[0035] The early warning signal analysis output element 305 is connected with the power supply device 11. The early warning signal analysis output element 305 functions to process different input signals of the early warning signal input element 304. The signal meeting the safety range, i.e. the signal of h1∈h0, will be output as “green”, and the signal not meeting the safety range, i.e. The signal will be output as "red", and the result will be output as a corresponding electrical signal to the warning indicator 306.

[0036] Further, the secondary cutting-off control system 4 comprises a high-performance battery 401, a high-voltage capacitor storage 402, a telescopic wire storage device 403, a telescopic wire control switch 404, a cutting-off high-voltage current switch 405, and a second time relay 406.

[0037] The high-performance battery 401 is connected to the high-voltage capacitor storage 402 through a wire, and functions to provide a stable power supply.

[0038] The high-voltage capacitor storage 402 is connected to the two telescopic wire storage devices 403 at the lower end, and functions to store a large amount of charge.

[0039] The telescopic wire storage device 403 is provided with two devices, which are symmetrically arranged left and right, and functions to place the high-voltage current wire 711 of the multifunctional cutting-off integrated device 7, so that the wire can be automatically extended and wound when the multi-stage telescopic rod 710 of the multifunctional cutting-off integrated device 7 is extended and retracted.

[0040] The telescopic wire control switch 404 controls the extension and retraction of the multi-stage telescopic rod 710 of the multifunctional cutting-off integrated device 7.

[0041] The cutting-off high-voltage current switch 405 controls the opening and closing of the high-voltage capacitor storage 402.

[0042] The second time relay 406 is connected to the telescopic wire control switch 404. When the telescopic wire control switch 404 is opened, an electrical signal is input, and the timing starts. When the telescopic wire control switch 404 is closed again, the electrical signal is turned off, and the timing stops. The function is to measure the extension height and operation time of the multi-stage telescopic rod 710 of the multifunctional cutting-off integrated device 7.

[0043] Further, the secondary cutting-off auxiliary system 5 comprises a water storage tank 501, a foam mixture storage tank 502, an impeller 503, a liquid inlet 504, a liquid outlet 505, a telescopic conduit storage device 506, a high-frequency alternating current motor 507, a foam mixture control switch 508, a high-pressure water flow control switch 509, and an electromagnetic spiral rock-breaking drill switch 510.

[0044] The water storage tank 501 and the foam mixture storage tank 502 are symmetrically arranged left and right, and are distributed at the back of the device. Their functions are to store water for use by the high-pressure water flow nozzle 706 of the multifunctional cutting-off integrated device 7 and to store foam mixture for use by the foam mixture nozzle 703 of the multifunctional cutting-off integrated device 7, respectively.

[0045] Impeller 503, fixed in the water storage tank 501, foam mixture storage tank 502, its role is to rotate quickly to produce centrifugal force to make the liquid into the conduit;

[0046] Liquid inlet 504, a total of two, respectively, in the water storage tank 501 and foam mixture storage tank 502 top, its purpose is to load water, mixture into the storage tank;

[0047] Liquid outlet 505, a total of two, respectively, in the water storage tank 501 and foam mixture storage tank 502 bottom, its purpose is to discharge water, mixture from the storage tank;

[0048] Telescopic conduit storage device 506, a total of two, left and right symmetrically fixed in the device, located above the water storage tank 501 and foam mixture storage tank 502, used to place the water flow conduit 707 and foam mixture conduit 704 of the multifunctional cutting and integrated device 7, when the multi-stage telescopic rod 710 of the multifunctional cutting and integrated device 7 is extended, the conduit will be extended, and when the multi-stage telescopic rod 710 of the multifunctional cutting and integrated device 7 is retracted, the conduit will be automatically wound and retracted;

[0049] High-frequency alternating current motor 507, located below the water storage tank 501 and foam mixture storage tank 502, its role is to provide power;

[0050] Foam mixture control switch 508, high-pressure water flow control switch 509, electromagnetic spiral rock drill switch 510 are connected through wires and embedded in the high-frequency alternating current motor 507; Foam mixture control switch 508 controls the impeller 503 to rotate counterclockwise, so that the foam mixture enters the foam mixture conduit 704 of the multifunctional cutting and integrated device 7; High-pressure water flow control switch 509 controls the impeller 503 to rotate clockwise, so that the water flow enters the water flow conduit 707 of the multifunctional cutting and integrated device 7; Electromagnetic spiral rock drill switch 510 is the power switch of the powerful electromagnet 702 of the multifunctional cutting and integrated device 7, when the power is turned on, the electromagnet passes through the alternating current, so that the magnetized iron ball 701 of the multifunctional cutting and integrated device 7 and the powerful electromagnet 702 are alternately attracted and repelled by magnetic force, the magnetized iron ball 701 is attracted to the powerful electromagnet 702, and the magnetized iron ball 701 is repelled when it leaves the powerful electromagnet 702.

[0051] Further, the sound wave emitting device 6 includes heat absorbing material 601, sound wave reflecting plate 602, sound insulation layer 603, insulation waterproof layer 604, emitting device angle adjusting knob 605, fixed support plate 606, spiral coil 607, metal magnetic rod 608, heat transfer pipe 609, high elasticity spring 610, sound wave generator 611, isolation heat preservation plate 612, sound wave emitting port 613, wherein:

[0052] Heat absorbing material 601, inserted into the sound wave emitting port 613, which absorbs heat to measure temperature;

[0053] Sound wave reflecting plate 602, welded to the isolation heat preservation plate 612, which is a circular ring member;

[0054] Sound insulation layer 603, which isolates the inside and outside of the structure from sound to prevent mutual interference;

[0055] Insulating waterproof layer 604, arranged inside the sound insulation layer 603, which plays a waterproof and electrically insulating role;

[0056] Emitting device angle adjustment knob 605, arranged in the middle of the sound wave emitting device, which adjusts the emitting angle and cooperates with the horizontal level 15 to level in the horizontal direction, ensuring the accuracy of the emitting direction;

[0057] Fixed support plate 606, which is a circular ring member, welded to the device, which supports and fixes the device;

[0058] Spiral coil 607, arranged outside the metal magnetic rod 608, in a circular ring shape, which generates eddy current heating after being electrified and electromagnetically induced with the metal magnetic rod 608;

[0059] Heat conducting pipe 609, arranged on the isolation heat preservation plate 612, which transmits heat to the inside of the sound wave emitting device structure to change the internal air temperature; isolation heat preservation plate 612, which maintains the temperature inside the device;

[0060] Highly flexible spring 610, arranged in two, connected to the sound wave generator 611, controlled by the sound wave generator switch 106;

[0061] Sound wave generator 611, which generates sound waves by vibration;

[0062] Sound wave emitting port 613, arranged at the top of the sound wave emitting device, through which the concentrated sound waves reflected by the sound wave reflecting plate 602 are emitted.

[0063] Further, the multifunctional cutting and topping integrated device 7 includes a magnetized iron ball 701, a powerful electromagnet 702, a foam mixture spray head 703, a foam mixture conduit 704, a high-strength rock breaking steel pipe 705, a high-pressure water flow spray head 706, a water flow conduit 707, a spiral wire rod 708, an insulating protective material 709, a multi-stage telescopic rod 710, a high-voltage current wire 711, a discharge iron core rod 712, and a smooth circular track 713.

[0064] Magnetized iron ball 701, arranged on the smooth circular track 713;

[0065] Strong electromagnet 702, welded on the multifunctional cutting and topping integrated device 7, four of each multifunctional cutting and topping integrated device, alternating magnetic after the passage of alternating current, thus cooperating with the magnetized iron ball 701 to produce high-speed rotation;

[0066] Foam mixture spray head 703, the lower end is connected with the foam mixture conduit 704, used for spraying foam mixture;

[0067] High-strength rock-breaking steel pipe 705, fixed on the magnetized iron ball 701, four steel pipes are arranged for each multifunctional cutting and topping integrated device, which plays a role in breaking rocks into the soil;

[0068] High-pressure water flow spray head 706, connected with the water flow conduit 707, used for spraying high-pressure water flow;

[0069] Spiral wire rod 708, wrapped by insulating protective material 709, which plays a role in winding and connecting the current wire and the discharge iron core rod 712;

[0070] Multi-stage telescopic rod 710, controlled by the telescopic wire control switch 404 of the secondary cutting and topping control system 4;

[0071] High-voltage current wire 711, arranged between the foam mixture conduit 704 and the water flow conduit 707, which plays a role in current transmission;

[0072] Smooth circular track 713, welded with the strong electromagnet 702, fixed on the multifunctional cutting and topping integrated device, used for placing the magnetized iron ball 701, and providing a high-speed rotating track.

[0073] Further, the device further comprises:

[0074] Portable lifting rod 8, hinged with the top of the device, facilitating flexible movement of the device during on-site construction;

[0075] Connecting hinge 9, connecting the multifunctional cutting and topping integrated device 7, the soil-grabbing fixing device 13, and the device shell;

[0076] Isolation plate 10, which plays a role in separating the sound wave emitting system and the sound wave receiving input system 2 to prevent mutual interference;

[0077] Power supply device 11, which supplies power to the sound wave receiving input system 2 and the data analysis and early warning system 3;

[0078] Bottom telescopic tray 14, which is telescopic through a pin, plays a role in stabilizing and fixing;

[0079] Horizontal level 15, embedded in the outer wall of the device protection shell, cooperates with the emitting device angle adjustment knob, and plays a role in verifying whether the emitting system reaches the horizontal position;

[0080] Sound transmission net 21 is fixed on the top of the device, which facilitates the sound wave to pass through.

[0081] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0082] (1) The device of the present application has the advantage of adjusting the speed of sound waves by changing the temperature of the air, thereby achieving accurate determination of the cutting depth by emitting sound waves. The device of the present application first adjusts the angle of the sound wave emitting device through the angle adjustment knob 605, then levels the horizontal direction with the horizontal level 15 to ensure the accuracy of the emitting direction; then the high-stretch spring 610 is vibrated at high frequency to generate sound waves by controlling the sound wave generator switch 106, and then the sound waves are emitted from the sound wave generator 611. The emitted sound waves are affected by electromagnetic induction heating after the high-frequency coil 607 and the metal magnetic rod 608 are electrified, causing the speed of sound waves to change; the cutting depth can be calculated and measured by the speed of sound after the speed changes and the time from the emission of the sound waves to the reception again.

[0083] The formula for calculating the speed of sound after the speed changes is as follows:

[0084]

[0085] In the formula, T is the temperature in the cavity of the sound wave emitting device.

[0086] The formula for calculating the cutting depth H is as follows:

[0087] H = Vt / 2

[0088] In the formula, t is the time from the emission of the sound waves to the reception again.

[0089] (2) The device of the present application has the feature of secondary continuous cutting of the part of the roof that has not been completely cut. When the roof has a part that has not been completely cut, the pre-warning indicator light 306 will light up red, and then based on the cutting depth obtained by detection, through the joint action of the multifunctional cutting device 7 and the high-voltage capacitor storage 402, the high-voltage current is released instantly to complete the re-cutting operation.

[0090] (3) The device of the present application has the feature of quantitatively evaluating the cutting depth index of the roof. The device of the present application uses the actual cutting depth and the standard cutting depth for comparison through the cutting depth data comparison element 303, and uses the output result of the pre-warning indicator light 306 to quantitatively evaluate whether the cutting index meets the requirements.

[0091] (4) The device of the present application has the advantages of good universality, low cost, reliable performance, easy operation, etc. BRIEF DESCRIPTION OF DRAWINGS

[0092] Figure 1Figure 1 is a sectional view of the embodiment of the acoustic velocity temperature control type electric cutting monitoring device for cutting the roof of a chamber;

[0093] Figure 2 Figure 2 is a perspective view of the device shown in Figure 1; Figure 1

[0094] Figure 3 Figure 3 is a sectional view of the device shown in Figure 2; Figure 1

[0095] Figure 4 Figure 4 is a sectional view of the embodiment of the acoustic wave detection cutting depth device;

[0096] Figure 5 Figure 5 is a working diagram of the secondary cutting device;

[0097] Figure 6 Figure 6 is a schematic diagram of the effect of the secondary cutting device;

[0098] Figure 7 Figure 7 is a sectional view of the acoustic wave emission device 6; Figure 1

[0099] Figure 8 Figure 8 is a sectional view of the device shown in Figure 7; Figure 7

[0100] Figure 9 Figure 9 is a sectional view of the multifunctional cutting integrated device 7; Figure 1

[0101] Figure 10 Figure 10 is a sectional view of the device shown in Figure 9; Figure 9

[0102] Figure 11 Figure 11 is a sectional view of the device shown in Figure 10; Figure 9

[0103] Figure 12 Figure 12 is a sectional view of the acoustic wave receiving input system 2; Figure 1

[0104] Figure 13 Figure 13 is a working flow chart of the system shown in Figure 12; Figure 12

[0105] Figure 14 Figure 14 is a detailed view of the data analysis and early warning system 3; Figure 1

[0106] Figure 15 Figure 15 is a working flow chart of the system embodiment shown in Figure 14; Figure 14

[0107] Figure 16 Figure 16 is a detailed view of the secondary cutting control system 4. Figure 1

[0108] wherein,​​​​​​​​​​​​

[0109] 101 is a temperature measuring element, 102 is a sound wave emitting system power supply, 103 is a temperature adjusting button, 104 is a temperature adjusting element, 105 is a first time relay, 106 is a sound wave generator switch,

[0110] 2 is a sound wave receiving input system, 201 is a sound wave input screening device, 202 is an input sound wave analysis processing device, 203 is a sound wave data storage device, 204 is a sound wave signal converter, 205 is a sound wave receiver,

[0111] 3 is a data analysis early warning system, 301 is a top cutting depth preset standard element, 302 is a data analysis processing element, 303 is a top cutting depth data comparison element, 304 is a warning signal input element, 305 is a warning signal analysis output element, 306 is a warning indicator light,

[0112] 4 is a secondary top cutting control system, 401 is a high-performance battery, 402 is a high-voltage capacitor storage, 403 is a telescopic wire storage device, 404 is a telescopic wire control switch, 405 is a top cutting high-voltage current switch, 406 is a second time relay,

[0113] 5 is a secondary top cutting auxiliary system, 501 is a water storage tank, 502 is a foam mixing agent storage tank, 503 is an impeller, 504 is a liquid inlet, 505 is a liquid outlet, 506 is a telescopic conduit storage device, 507 is a high-frequency alternating current motor, 508 is a foam mixing agent control switch, 509 is a high-pressure water flow control switch, 510 is an electromagnetic spiral rock breaking drill switch,

[0114] 6 is a sound wave emitting device, 601 is a heat absorbing material, 602 is a sound wave reflecting plate, 603 is a sound insulation layer, 604 is an insulation waterproof layer, 605 is an emitting device angle adjusting knob, 606 is a fixed support plate, 607 is a spiral coil, 608 is a metal magnetic rod, 609 is a heat transfer conduit, 610 is a high-stretch spring, 611 is a sound wave generator, 612 is an isolation insulation board, 613 is a sound wave emitting port,

[0115] 7 is a multifunctional top cutting integrated device, 701 is a magnetized iron ball, 702 is a powerful electromagnet, 703 is a foam mixing agent nozzle, 704 is a foam mixing agent conduit, 705 is a high-strength rock breaking steel pipe, 706 is a high-pressure water flow nozzle, 707 is a water flow conduit, 708 is a spiral wire rod, 709 is an insulation protection material, 710 is a multi-stage telescopic rod, 711 is a high-voltage current wire, 712 is a discharge iron core rod, 713 is a smooth circular track,

[0116] 8 is a portable lifting rod,

[0117] 9 is a connecting hinge,

[0118] 10 is a partition plate.

[0119] 11 is the power supply device.

[0120] 13 is the soil-entry gripping and fixing device.

[0121] 14 is the bottom telescopic tray.

[0122] 15 is a level instrument.

[0123] 17 is a high-definition display screen.

[0124] 19 represents deep rock strata.

[0125] 20 is a softening mixture.

[0126] 21 is a sound-permeable mesh. Detailed Implementation

[0127] The technical solutions provided in this application will be further described below with reference to specific embodiments and accompanying drawings. The advantages and features of this application will become clearer from the following description.

[0128] It should be noted that the embodiments of this application are preferred for implementation and are not intended to limit the application in any way. The technical features or combinations of technical features described in the embodiments of this application should not be considered isolated; they can be combined with each other to achieve better technical effects. The scope of the preferred embodiments of this application may also include other implementations, and this should be understood by those skilled in the art to which the embodiments of this application pertain.

[0129] Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of exemplary embodiments may have different values.

[0130] The accompanying drawings in this application are all in a very simplified form and use non-precise proportions, intended only to facilitate and clarify the illustration of the embodiments of this application, and are not intended to limit the implementation of this application. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes achieved by this application, should fall within the scope of the technical content disclosed in this application. Furthermore, the same reference numerals appearing in the various drawings of this application represent the same features or components, and can be applied to different embodiments.

[0131] The application discloses a sound velocity temperature control type electric cutting monitoring device for chamber roof cutting, which comprises a sound wave emitting system, a sound wave emitting device 6, a sound wave receiving input system 2, a data analysis and early warning system 3, a secondary cutting control system 4 and a secondary cutting auxiliary system 5.

[0132] The sound wave emitting system is used for measuring the temperature of air in the sound wave emitting device 6, displaying the temperature on a high-definition display screen 17, controlling the sound wave emitting device 6 to emit and stop sound waves, and transmitting data signals to the sound wave receiving input system 2 through transmission wires.

[0133] The sound wave receiving input system 2 is used for receiving sound wave emitting data transmitted by the sound wave emitting system and transmitting the data to the data analysis and early warning system 3.

[0134] The data analysis and early warning system 3 is used for analyzing and processing sound wave data output by the sound wave receiving input system 2, calculating an actual cutting depth, comparing the actual cutting depth with a preset standard cutting depth, and sending an early warning signal according to a comparison result; the early warning signal is used for determining whether secondary cutting treatment needs to be performed on the test point.

[0135] The multifunctional cutting integrated device 7 is used for performing secondary cutting treatment on the rock mass; the secondary cutting control system 4 is used for cutting rock into soil of the roof needing secondary cutting, the secondary cutting auxiliary system 5 is used for softening treatment of the roof rock soil, and high-voltage current is released to perform electric explosion cutting.

[0136] Further, the data analysis and early warning system 3 is used for analysis, and the sound wave emitting system is used for changing the air temperature to adjust the sound wave speed of the sound wave emitting device 6, so that the sound wave emitting device 6 can accurately measure the cutting depth.

[0137] Further, the cutting depth can be calculated and measured by using the changed sound wave speed and the time from sound wave emission to re-reception.

[0138] The calculation formula of the changed sound wave speed V is as follows:

[0139]

[0140] In the formula, T is the temperature in the chamber of the sound wave emitting device.

[0141] The calculation formula of the cutting depth H is as follows:

[0142] H = Vt / 2

[0143] In the formula, t is the time from sound wave emission to re-reception.

[0144] Further, the top plate is not completely cut off part of the secondary continuous cutting; when the top plate appears not completely cut off part, data analysis warning system 3 warning, and then based on the detection of the cutting depth, through the multifunctional cutting top integrated device 7 and secondary cutting control system 4, secondary cutting auxiliary system 5 of joint action, instantaneous release high voltage current complete cutting operation again.

[0145] As shown in Figure 1 The sound wave emission system includes a temperature measuring element 101, a sound wave emission system power supply 102, a temperature adjusting button 103, a temperature adjusting element 104, a first time relay 105, and a sound wave generator switch 106.

[0146] The temperature measuring element 101 is connected to the heat absorbing material 601 of the sound wave emission device 6 at one end and connected to the sound wave emission system power supply 102 and the temperature adjusting element 104 at the other end, for measuring the internal air temperature of the sound wave emission device 6 and displaying the temperature on the high-definition display screen 17, and transmitting the data signal to the sound wave signal converter 204 through the transmission wire.

[0147] The temperature adjusting button 103 is arranged on the side wall of the sound velocity temperature control type electric cutting monitoring device and connected to the temperature adjusting element 104 through the transmission wire, and its purpose is to adjust the resistance value of the temperature adjusting element 104.

[0148] The temperature adjusting element 104 is connected to the spiral coil 607 of the sound wave emission device 6 through the transmission wire, and its purpose is to control the current size by changing the internal resistance size, so as to realize the control of the temperature.

[0149] The first time relay 105 is connected to the sound wave generator switch 106 and the sound wave signal converter 204 of the sound wave receiving input system 2 through the transmission wire.

[0150] The sound wave generator switch 106 is arranged on the side wall of the sound velocity temperature control type electric cutting monitoring device, and its main function is to control the generation and stop of the sound wave generator 611 of the sound wave emission device 6.

[0151] As shown in Figure 12 The sound wave receiving input system 2 includes a sound wave input screening device 201, an input sound wave analysis processing device 202, a sound wave data storage device 203, a sound wave signal converter 204, and a sound wave receiver 205.

[0152] Two acoustic wave input filtering devices 201, two acoustic wave analysis and processing devices 202, two acoustic wave signal converters 204, and two acoustic wave receivers 205 are evenly distributed on the left and right sides. The acoustic wave input filtering devices 201 are connected to the acoustic wave signal converters 204 and the acoustic wave analysis and processing devices 202 via wires; the acoustic wave analysis and processing devices 202 are connected to the acoustic wave data storage devices 203 via wires.

[0153] The acoustic signal converter 204 is connected to the acoustic input filtering device 201, the acoustic receiver 205, the first time relay 105 of the acoustic emission system, and the temperature regulating element 104 of the acoustic emission system via wires. Its main function is to convert the received acoustic signal, temperature signal, and time signal into electrical signals and transmit them to the acoustic input filtering device 201.

[0154] like Figure 14 As shown, the data analysis and early warning system 3 includes a cutting depth preset standard element 301, a data analysis and processing element 302, a cutting depth data comparison element 303, an early warning signal input element 304, an early warning signal analysis and output element 305, and an early warning indicator 306.

[0155] The top cutting depth preset standard element 301 is connected to the acoustic data storage device 203 at one end via a wire, and to the data analysis and processing element 302 and the top cutting depth data comparison element 303 at the other end. During actual construction, the preset standard top cutting depth in the top cutting depth preset standard element 301 is recorded as h0 according to the top cutting control index.

[0156] The data analysis and processing element 302 primarily functions to utilize pre-designed calculation formulas. (where T is temperature and t is time), the data in the acoustic data storage device 203 is analyzed and processed to calculate the actual cutting depth of the project, which is recorded as h1, and the result is transmitted to the cutting depth data comparison element 303 for comparison.

[0157] The judgment criterion is as follows: The standard cutting depth h0 of the preset cutting depth standard element 301 is compared with the actual cutting depth h1 calculated by the data analysis and processing element 302. If the result shows that the input cutting depth signal is within the range of the preset cutting depth standard element 301 (i.e., h1∈h0), the input signal can be considered to meet the safety standard; if the result shows that the input cutting depth signal is outside the range of the preset cutting depth standard element 301 (i.e., h1∈h0), the input signal can be considered to meet the safety standard. If the input signal is deemed not to meet safety standards, the result signal is then transmitted to the warning signal input element 304.

[0158] The warning signal input element 304 takes the final output of the top cutting depth data comparison element 303 as the input signal and converts it into an electrical signal to be transmitted to the warning signal analysis output element 305.

[0159] The warning signal analysis output element 305 is connected to the power supply device 11; its main function is to process different input signals from the warning signal input element 304. Signals that conform to the safety range, i.e., signals h1∈h0, will be output as "green," while signals that do not conform to the safety range, i.e., signals h1∈h0, will be output as "green." The signal will be output as "red", and this result will be output as a corresponding electrical signal and transmitted to the warning indicator 306.

[0160] like Figure 16 As shown, the secondary top-cutting control system 4 includes a high-performance battery 401, a high-voltage capacitor storage device 402, a telescopic cable storage device 403, a telescopic cable control switch 404, a top-cutting high-voltage current switch 405, and a second time relay 406.

[0161] The high-performance battery 401 is connected to the high-voltage capacitor storage 402 via wires, and its main function is to provide a stable power supply.

[0162] The high-voltage capacitor storage unit 402 is connected at its lower end to two telescopic cable storage devices 403, and its main purpose is to store large-capacity charges.

[0163] There are two telescopic cable storage devices 403, arranged symmetrically on the left and right. Their main purpose is to store the high-voltage current conductor 711 of the multi-functional top-cutting integrated device 7. When the multi-stage telescopic rod 710 of the multi-functional top-cutting integrated device 7 extends and retracts, the conductor can extend and retract on its own.

[0164] The telescopic line control switch 404 is mainly used to control the extension and retraction of the multi-stage telescopic rod 710 of the multi-functional top-cutting integrated device 7.

[0165] The top high voltage current switch 405 mainly controls the opening and closing of the high voltage capacitor storage 402.

[0166] The second time relay 406 is connected to the telescopic line control switch 404. When the telescopic line control switch 404 is turned on, an electrical signal is input and the timing starts. When the telescopic line control switch 404 is turned off again, the electrical signal is turned off and the timing stops. Its main function is to measure the telescopic height and operation time of the multi-stage telescopic rod 710 of the multi-functional top-cutting integrated device 7.

[0167] like Figure 2As shown, the secondary roof cutting auxiliary system 5 includes a water storage tank 501, a foam mixture storage tank 502, an impeller 503, a liquid inlet 504, a liquid outlet 505, a telescopic conduit storage device 506, a high-frequency alternating current motor 507, a foam mixture control switch 508, a high-pressure water flow control switch 509, and an electromagnetic spiral rock-breaking drill switch 510.

[0168] The water storage tank 501 and the foam mixture storage tank 502 are arranged symmetrically left and right and are distributed at the rear of the device. Their functions are to store water for use by the high-pressure water flow nozzle 706 of the multifunctional roof cutting integrated device 7 and to store foam mixture for use by the foam mixture nozzle 703 of the multifunctional roof cutting integrated device 7, respectively.

[0169] The impeller 503 is fixed between the water storage tank 501 and the foam mixture storage tank 502. Its function is to rotate rapidly to generate centrifugal force to make the liquid in the tank enter the conduit.

[0170] The liquid inlet 504 is provided with two, one on the top of the water storage tank 501 and the other on the top of the foam mixture storage tank 502. Its purpose is to load water and mixture into the storage tank.

[0171] The liquid outlet 505 is provided with two, one on the bottom of the water storage tank 501 and the other on the bottom of the foam mixture storage tank 502. Its purpose is to discharge water and mixture from the storage tank.

[0172] The telescopic conduit storage device 506 is provided with two, fixed symmetrically left and right inside the device, above the water storage tank 501 and the foam mixture storage tank 502. It is used to place the water flow conduit 707 and the foam mixture conduit 704 of the multifunctional roof cutting integrated device 7. When the multi-stage telescopic rod 710 of the multifunctional roof cutting integrated device 7 is extended, the conduits will be extended with it. When the multi-stage telescopic rod 710 of the multifunctional roof cutting integrated device 7 is retracted, the conduits will be automatically wound and retracted.

[0173] The high-frequency alternating current motor 507 is located below the water storage tank 501 and the foam mixture storage tank 502. Its function is to provide power.

[0174] The foam mixture control switch 508, high-pressure water flow control switch 509, and electromagnetic spiral rock-breaking drill switch 510 are connected by wires and embedded in the high-frequency AC motor 507. The foam mixture control switch 508 controls the impeller 503 to rotate counterclockwise, thereby allowing the foam mixture to enter the foam mixture conduit 704 of the multi-functional roof-cutting integrated device 7. The high-pressure water flow control switch 509 controls the impeller 503 to rotate clockwise, thereby allowing water to enter the water flow conduit 707 of the multi-functional roof-cutting integrated device 7. The electromagnetic spiral rock-breaking drill switch 510 is the power switch for controlling the powerful electromagnet 702 of the multi-functional roof-cutting integrated device 7. When the power is turned on, the electromagnet is energized with AC, causing the magnetized iron ball 701 of the multi-functional roof-cutting integrated device 7 and the powerful electromagnet 702 to alternately attract and repel each other through magnetic force. When the magnetized iron ball 701 approaches the powerful electromagnet 702, they attract each other, and when the magnetized iron ball 701 leaves the powerful electromagnet 702, they repel each other.

[0175] like Figure 7 , Figure 8 As shown, the sound wave emitting device 6 includes a heat-absorbing material 601, a sound wave reflector 602, a sound insulation layer 603, an insulating and waterproof layer 604, an emitting device angle adjustment knob 605, a fixed support plate 606, a spiral coil 607, a metal magnetic rod 608, a heat transfer conduit 609, a highly elastic spring 610, a sound wave generator 611, an insulation board 612, and a sound wave emitting port 613.

[0176] The heat-absorbing material 601 is embedded in the sound wave emitting port 613, and its main function is to absorb heat to measure temperature.

[0177] The sound wave reflector 602 is welded to the insulation board 612 and is a circular component.

[0178] The sound insulation layer 603 primarily functions to isolate internal and external sounds from each other to prevent mutual interference.

[0179] The insulating and waterproof layer 604 is located inside the sound insulation layer 603 and serves to provide waterproofing and electrical protection.

[0180] The transmitting device angle adjustment knob 605 is located in the middle of the sound wave transmitting device. Its main function is to adjust the transmitting angle and, together with the level instrument 15, to level the horizontal direction and ensure the accuracy of the transmitting direction.

[0181] The fixed support plate 606 is a circular component that is welded to the device and serves to support and fix it.

[0182] The spiral coil 607 is arranged in a ring shape on the outside of the metal magnetic rod 608. When it is energized, it induces electromagnetic induction with the metal magnetic rod 608, generating eddy current heating.

[0183] Heat transfer pipe 609 is arranged on the insulation board 612, which mainly functions to transfer heat to the inside of the sound wave emitting device structure, changing the temperature of the air inside; the insulation board 612 mainly functions to maintain the temperature inside the device.

[0184] Highly elastic spring 610, arranged in two, connected to the sound wave generator 611, controlled by the sound wave generator switch 106.

[0185] Sound wave generator 611 mainly functions to generate sound waves by vibration.

[0186] Sound wave emitting port 613 is arranged at the top of the sound wave emitting device, and the concentrated sound waves reflected by the sound wave reflecting plate 602 are emitted through this port.

[0187] As shown in Figure 9 , Figure 10 , Figure 11 Multifunctional cutting and topping integrated device 7 includes magnetized iron ball 701, powerful electromagnet 702, foam mixture spray head 703, foam mixture conduit 704, high-strength rock-breaking steel pipe 705, high-pressure water flow spray head 706, water flow conduit 707, spiral wire rod 708, insulating protective material 709, multi-stage telescopic rod 710, high-voltage current wire 711, discharge iron core rod 712, smooth circular track 713.

[0188] Magnetized iron ball 701 is arranged on the smooth circular track 713.

[0189] Powerful electromagnet 702 is welded on the multifunctional cutting and topping integrated device 7, and four are arranged on each multifunctional cutting and topping integrated device. After being connected to alternating current, it generates a certain frequency of alternating magnetism, thereby cooperating with the magnetized iron ball 701 to generate high-speed rotation.

[0190] Foam mixture spray head 703 is connected to foam mixture conduit 704 at the lower end and is used to spray foam mixture.

[0191] High-strength rock-breaking steel pipe 705 is fixed on the magnetized iron ball 701, and four steel pipes are arranged on each multifunctional cutting and topping integrated device, which functions to break rocks and enter the soil.

[0192] High-pressure water flow spray head 706 is connected to water flow conduit 707 and is used to spray high-pressure water flow.

[0193] Spiral wire rod 708 is wrapped by insulating protective material 709, which functions to wrap and connect the current wire to the discharge iron core rod 712.

[0194] Multi-stage telescopic rod 710 is controlled by the telescopic wire control switch 404 of the secondary cutting control system 4.

[0195] High-voltage current wire 711, which is arranged between foam mixture conduit 704 and water flow conduit 707, plays a role of current transmission.

[0196] Smooth circular track 713, which is welded with powerful electromagnet 702 and fixed on multifunctional top cutting integrated device, is used to place magnetized iron ball 701 and provide a high-speed rotating track.

[0197] The device further comprises:

[0198] Portable lifting rod 8 is hinged to the top of the device to facilitate flexible movement of the device during on-site construction.

[0199] Connecting hinge 9 connects multifunctional top cutting integrated device 7, earth-grabbing fixing device 13, and the device shell.

[0200] Isolation plate 10 mainly separates sound wave emitting system from sound wave receiving input system 2 to prevent mutual interference.

[0201] Power supply device 11 supplies power to sound wave receiving input system 2 and data analysis and early warning system 3.

[0202] Bottom telescopic tray 14 is telescopic through a pin and plays a role of stable fixation.

[0203] Horizontal level 15 is embedded in the outer wall of the device protection shell and cooperates with angle adjustment knob 605 of the emitting device, and its main role is to verify whether the emitting system reaches a horizontal position.

[0204] Sound-transmitting mesh membrane 21 is fixed on the top of the device, and its role is to facilitate the passage of sound waves.

[0205] In the embodiment, the inside of the device is mainly divided into upper and lower two areas, and the two areas are separated by isolation plate 10. Figure 1 As shown in the figure, the upper area contains sound wave emitting system, sound wave emitting device 6, and part of secondary top cutting auxiliary system 5; the lower area contains sound wave receiving input system 2, data analysis and early warning system 3, secondary top cutting control system 4, and part of secondary top cutting auxiliary system 5.

[0206] The front protection shell of the device is fixed by bolts, as shown in the figure, the top of the device has a groove for placing portable lifting rod 8, and there is a concave notch at each corner for accommodating multi-stage telescopic rod 710. Figure 3 The working principle and process of the device are as follows:

[0207]

[0208] ​Step 1, device level leveling. Before the formal operation of the device, first put the device to the point of the need to test, through the bottom end of the telescopic tray 14 to put the device in the appropriate location, according to the site fluctuations on the device level adjustment, adjust the angle of the launcher angle adjustment knob 605, so as to adjust the angle of the sound wave launcher 6, while cooperating with the observation of the level 15, until the level 15 shows that the device has been adjusted to the horizontal position.

[0209] Step 2, device fixation and horizontal fine adjustment. After the horizontal position is adjusted, the soil grabbing fixing device 13 should be immediately extended and pressed into the rock-soil body to play the role of fixing device. After fixing, the level 15 is confirmed again to adjust the level. If there is a change, it needs to be fine adjusted to the horizontal position again.

[0210] Step 3, temperature setting adjustment. After all the preparations before testing are completed, first adjust the temperature adjustment button 103, control the heating temperature at the set value by changing the current size, and always observe the value on the liquid crystal unit of the high-definition display screen 17. After reaching the set temperature and stabilizing, start the next step.

[0211] Step 4, sound wave emission and reception. After the heating temperature reaches the set value and the temperature value on the liquid crystal unit of the high-definition display screen 17 is confirmed, turn on the sound wave generator switch 106 to emit sound waves. After the sound wave emission, always pay attention to the time change of the high-definition display screen 17, because when the sound wave generator switch 106 is turned on, the first time relay 105 works due to the input of the electric signal, and the timing starts. When the sound wave receiver 205 receives the sound wave signal, the sound wave signal is converted into an electric signal under the action of the sound wave signal converter 204, and the first time relay 105 stops working due to the secondary reception of the electric signal input. Timing stop means the end of a sound wave emission process. After the timing stops, the sound wave generator switch 106 should be turned off to stop generating sound waves. The sound wave working diagram is shown in Figure 4

[0212] Step 5, sound wave data reception filtering. After the sound wave emission ends, wait for the analysis and processing of the sound wave reception input system 2 and the data analysis and warning system 3. After the sound wave emission end is received, the sound wave signal received by the sound wave receiver 205, the temperature signal measured by the temperature measuring element 101, and the time signal measured by the first time relay 105 are converted into electric signals by the sound wave signal converter 204. After being filtered by the sound wave input screening device 201, the electric signals are input to the input sound wave analysis processing device 202 for processing. Then, they are transmitted from the input sound wave analysis processing device 202 to the sound wave data storage device 203 for backup and then processed by the data analysis and warning system 3. The working flow chart is shown in Figure 13 ​​

[0213] Step 6, analysis of the filtered acoustic data. The input data is processed by the data analysis processing element 302 using the pre-set calculation formula The actual cutting depth is calculated and recorded as h1, and the result is transmitted to the cutting depth data comparison element 303 for comparison. In the cutting depth data comparison element 303, the cutting depth h0 of the cutting depth preset standard element 301 is compared with the actual cutting depth h1 calculated by the data analysis processing element 302. When the result data shows that the input cutting depth signal is within the range of the preset standard element, i.e. h1∈h0, it is determined that the input signal meets the safety standard. When the result data shows that the input cutting depth signal is outside the range of the preset standard element, i.e. it is determined that the input signal does not meet the safety standard. Finally, the result signal is transmitted to the 304 warning signal input element.

[0214] Step 7, determine whether the cutting depth meets the requirements according to the warning indicator light. After the data analysis and warning system 3 analyzes and processes the data, determine whether the upper rock mass needs to be cut again according to the color of the warning indicator light 306. When the color is green, it means that the upper roof of the test point meets the predicted cutting depth and no further processing is needed. When the color is red, it means that the upper roof of the test point does not meet the predicted cutting depth and needs to be cut again. The analysis and warning process chart is shown in Figure 15 .

[0215] Step 8, the cutting device breaks the rock and enters the soil for the roof that needs to be cut again. For the roadway roof that needs to be cut again, first calculate the depth that needs to be cut again according to the actual cutting depth h1 measured before, press the telescopic line control switch 404 to control the multi-stage telescopic rod 710 to reach the specified height, open the electromagnetic spiral rock breaking drill switch 510, and the high-strength rock breaking steel pipe 705 starts to rotate at high speed under the electrically generated magnetic effect of the magnetized iron ball 701 and the powerful electromagnet 702. Press the telescopic line control switch 404 again to break the rock and enter the soil. After entering the deep rock layer 19 to the expected depth, close the telescopic line control switch 404.

[0216] Step 9, roof rock and soil infiltration and softening treatment. After the multi-stage telescopic rod 710 has reached the specified height, open the foam mixture control switch 508, and the foam mixture enters the conduit under the centrifugal force of the impeller 503, and is sprayed from the foam mixture nozzle 703 through the foam mixture conduit 704 to wet and soften the rock and soil layer, and then close the foam mixture control switch 508. After waiting for a period of time, press the high-pressure water flow control switch 509, which works on the same principle as the foam mixture. The high-pressure water flow is transmitted from the water storage tank 501 to the high-pressure water flow nozzle 706, and then sprayed to infiltrate the rock and soil.

[0217] Step 10, release high-voltage current to electrically explode the roof. After the high-pressure water jet is sprayed for a period of time, the high-pressure water flow control switch 509 is closed. The roof cutting high-voltage current switch 405 is opened, and a momentary high-voltage current is generated with the instantaneous release of the charge stored in the high-voltage capacitor storage 402, which is transmitted to the discharge iron core rod 712 through the high-voltage current lead 711, achieving the purpose of a momentary high-voltage current impact on the rock stratum, and completing the small-range re-roof cutting task. The re-roof cutting work schematic diagram is shown in Figure 5 .

[0218] Step 11, after the roof cutting is completed, the next step operation is selected according to the actual needs. If the re-roof cutting rock stratum depth is shallow, the expected requirements can be met after one re-roof cutting, then the re-roof cutting task is ended, the multi-stage telescopic rod 710 is retracted, and then goes to the next measuring point. If the re-roof cutting rock stratum depth is deep, multiple roof cuttings are needed, then the telescopic line control switch 404 is pressed again, and the next round of roof cutting task is repeated by repeating steps 9-10, until the expected depth of the roof cutting is completed, and then goes to the next measuring point.

[0219] The above description is only a description of the preferred embodiments of the present application, and is not any limitation on the scope of the present application. Any modification or modification made by any person skilled in the art according to the above disclosed technical content should be regarded as an equivalent effective embodiment, and belongs to the scope of protection of the technical scheme of the present application.

Claims

1. A sonic temperature-controlled electric cutting monitoring device for roof cutting in a chamber, characterized in that, It includes a sound wave emitting system, a sound wave emitting device (6), a sound wave receiving and input system (2), a data analysis and early warning system (3), a secondary roof cutting control system (4), a secondary roof cutting auxiliary system (5), and a multi-functional roof cutting integrated device (7), wherein: The sound wave emitting system is used to measure the air temperature inside the sound wave emitting device (6) and display the temperature on the high-definition display screen, control the sound wave emitting device (6) to emit and stop sound waves, and transmit data signals to the sound wave receiving input system (2) through the transmission wire. The acoustic wave receiving input system (2) is used to receive acoustic wave emission data transmitted by the acoustic wave emitting system and transmit it to the data analysis and early warning system (3). The data analysis and early warning system (3) is used to analyze and process the acoustic data output by the acoustic receiving input system (2), calculate the actual cutting depth of the project, compare it with the preset standard cutting depth, and issue an early warning signal based on the comparison result; the early warning signal is used to determine whether the test point needs to be cut twice. The multi-functional roof cutting integrated device (7) is used to perform re-roof cutting on the rock mass; the secondary roof cutting control system (4) breaks the rock and enters the soil of the roof that needs secondary roof cutting, and the secondary roof cutting auxiliary system (5) softens the soil and rock of the roof and releases high voltage current to perform electric blasting roof cutting. The acoustic wave emitting system includes a temperature measuring element (101), an acoustic wave emitting system power supply (102), a temperature adjustment button (103), a temperature adjustment element (104), a first time relay (105), and an acoustic wave generator switch (106), wherein: The temperature measuring element (101) is connected at one end to the heat-absorbing material (601) of the sound wave emitting device (6) and at the other end to the power supply (102) and temperature regulating element (104) of the sound wave emitting system. It is used to measure the air temperature inside the sound wave emitting device (6) and display the temperature on the high-definition display screen (17). At the same time, it transmits the data signal to the sound wave signal converter (204) of the sound wave receiving input system (2) through the transmission wire. The temperature adjustment button (103) is located on the side wall of the sonic temperature control electric cutting monitoring device and is connected to the temperature adjustment element (104) through a transmission wire. Its purpose is to adjust the resistance value of the temperature adjustment element (104). The temperature regulating element (104) is connected to the spiral coil (607) of the sound wave emitting device (6) via a transmission wire. Its purpose is to control the current by changing the internal resistance, thereby controlling the temperature. The first time relay (105) is connected to the sound wave generator switch (106) and the sound wave signal converter (204) of the sound wave receiving input system (2) respectively via transmission wires; The sound wave generator switch (106) is located on the side wall of the sound speed temperature control electric cutting monitoring device. Its function is to control the generation and stop of the sound wave generator (611) of the sound wave emitting device (6). The sound wave emitting device (6) includes a heat-absorbing material (601), a sound wave reflector (602), a sound insulation layer (603), an insulating and waterproof layer (604), an emitting device angle adjustment knob (605), a fixed support plate (606), a spiral coil (607), a metal magnetic rod (608), a heat transfer conduit (609), a highly elastic spring (610), a sound wave generator (611), an insulation board (612), and a sound wave emitting port (613), wherein: The heat-absorbing material (601) is embedded in the sound wave emitting port (613) and its function is to absorb heat to measure temperature; The acoustic wave reflector (602) is welded to the insulation board (612) and is a circular component; The sound insulation layer (603) is used to isolate the sound inside and outside the structure to prevent mutual interference. An insulating and waterproof layer (604) is placed inside the sound insulation layer (603) and serves to provide waterproofing and electrical protection. The angle adjustment knob (605) of the transmitting device is located in the middle of the sound wave transmitting device. Its function is to adjust the transmitting angle and, together with the level (15), level the horizontal direction to ensure the accuracy of the transmitting direction. The fixed support plate (606) is a circular component that is welded to the device and serves to support and fix it. The spiral coil (607) is arranged in a ring shape on the outside of the metal magnetic rod (608). When it is energized, it generates eddy current heating by electromagnetic induction with the metal magnetic rod (608). The heat transfer pipe (609) is installed on the insulation board (612) and its function is to transfer heat to the interior of the sound wave emitting device and change the internal air temperature; the insulation board (612) is used to maintain the internal temperature of the device. Two high-elasticity springs (610) are installed and connected to the sound wave generator (611), and controlled by the sound wave generator switch (106); The function of the sound wave generator (611) is to generate sound waves when vibrated; The sound wave emission port (613) is located on the top of the sound wave emission device. The sound waves, after being reflected and concentrated by the sound wave reflector (602), are emitted through this port.

2. The sonic temperature-controlled electric cutting monitoring device for cutting the roof of a chamber as described in claim 1, characterized in that, The data analysis and early warning system (3) is used to analyze the data, and the air temperature is changed by the sound wave emission system to adjust the sound wave speed of the sound wave emission device (6), so as to achieve the precise measurement of the cutting depth by emitting sound waves. The cutting depth is calculated by the speed of sound after the change in velocity and the time from when the sound wave is emitted to when it is received again. The speed of sound, V, after the change in velocity, is calculated using the following formula: In the formula, T is the temperature inside the cavity of the sound wave emitting device; The cutting depth H is calculated using the following formula: H=Vt / 2 In the formula, t is the time from when the sound wave is emitted to when it is received again; The top plate is not completely cut off. When the top plate is not completely cut off, the data analysis and early warning system (3) issues an early warning. Then, based on the detected cutting depth, the high voltage current is released instantly to complete the cutting operation through the combined action of the multi-functional cutting device (7), the secondary cutting control system (4), and the secondary cutting auxiliary system (5).

3. The sonic temperature-controlled electric cutting monitoring device for roof cutting of a chamber as described in claim 1, characterized in that, The sound wave receiving and input system (2) includes a sound wave input filtering device (201), an input sound wave analysis and processing device (202), a sound wave data storage device (203), a sound wave signal converter (204), and a sound wave receiver (205), wherein: Two sound wave input screening devices (201), two sound wave analysis and processing devices (202), two sound wave signal converters (204), and two sound wave receivers (205) are evenly distributed on the left and right sides; the sound wave input screening devices (201) are connected to the sound wave signal converters (204) and the sound wave analysis and processing devices (202) respectively through wires; the sound wave analysis and processing devices (202) are connected to the sound wave data storage devices (203) through wires; The acoustic signal converter (204) is connected to the acoustic input filtering device (201), the acoustic receiver (205), the first time relay (105) of the acoustic emission system, and the temperature regulating element (104) of the acoustic emission system via wires respectively; its function is to convert the received acoustic signal, temperature signal and time signal into electrical signals and transmit them to the acoustic input filtering device (201).

4. The sonic temperature-controlled electric cutting monitoring device for cutting the roof of a chamber as described in claim 1, characterized in that, The data analysis and early warning system (3) includes a cutting depth preset standard element (301), a data analysis and processing element (302), a cutting depth data comparison element (303), an early warning signal input element (304), an early warning signal analysis and output element (305), and an early warning indicator (306), wherein: The pre-set standard element (301) for top cutting depth is connected to the acoustic data storage device (203) at one end via a wire, and to the data analysis and processing element (302) and the top cutting depth data comparison element (303) at the other end. During actual construction, the pre-set standard top cutting depth within the pre-set standard element (301) is recorded as the top cutting depth according to the top cutting control indicators. ; The data analysis and processing element (302) functions to use pre-designed calculation formulas. Where T is temperature and t is time, the data in the acoustic data storage device (203) is analyzed and processed to calculate the actual cutting depth of the project, denoted as . The result is then transmitted to the top cutting depth data comparison element (303) for comparison. The judgment criterion is: the standard cutting depth of the preset standard element (301). The actual cutting depth after processing and calculation by the data analysis and processing element (302) A comparison is made, and when the result shows that the input cutting depth signal is within the range of the preset standard element (301) for cutting depth, that is... The input signal is deemed to meet safety standards; when the result shows that the input cutting depth signal is outside the range of the preset standard element (301) for cutting depth, i.e. The input signal is then deemed not to meet safety standards; finally, the result signal is transmitted to the warning signal input element (304). The warning signal input element (304) takes the final output of the top cutting depth data comparison element (303) as the input signal and converts it into an electrical signal to be transmitted to the warning signal analysis output element (305). The warning signal analysis output element (305) is connected to the power supply device (11); its function is to process different input signals from the warning signal input element (304), and to select signals that meet the safety range. The signal will be output as "green", and the signal that does not meet the safety range will be output as "green". The signal will be output as "red", and this result will be output as a corresponding electrical signal and transmitted to the warning indicator (306).

5. The sonic temperature-controlled electric cutting monitoring device for cutting the roof of a chamber as described in claim 1, characterized in that, The secondary top-cutting control system (4) includes a high-performance battery (401), a high-voltage capacitor storage device (402), a telescopic cable storage device (403), a telescopic cable control switch (404), a top-cutting high-voltage current switch (405), and a second time relay (406), wherein: The high-performance battery (401) is connected to the high-voltage capacitor storage device (402) via a wire, and its function is to provide a stable power supply; The high-voltage capacitor storage device (402) is connected at its lower end to two telescopic wire storage devices (403) for the purpose of storing a large amount of charge; The telescopic cable storage device (403) has two units, arranged symmetrically on the left and right. Its purpose is to store the high-voltage current conductor (711) of the multi-functional top-cutting integrated device (7). When the multi-stage telescopic rod (710) of the multi-functional top-cutting integrated device (7) extends and retracts, the conductor extends and retracts on its own. The telescopic line control switch (404) controls the extension and retraction of the multi-stage telescopic rod (710) of the multi-functional top-cutting integrated device (7); The high-voltage current switch (405) controls the opening and closing of the high-voltage capacitor storage device (402); The second time relay (406) is connected to the telescopic line control switch (404). When the telescopic line control switch (404) is opened, an electrical signal is input and the timing starts. When the telescopic line control switch (404) is closed again, the electrical signal is turned off and the timing stops. Its function is to measure the telescopic height and operation time of the multi-stage telescopic rod (710) of the multi-functional top cutting integrated device (7).

6. The sonic temperature-controlled electric cutting monitoring device for roof cutting of a chamber as described in claim 1, characterized in that, The secondary roof-cutting auxiliary system (5) includes a water storage tank (501), a foam mixture storage tank (502), an impeller (503), a liquid inlet (504), a liquid outlet (505), a telescopic conduit storage device (506), a high-frequency AC motor (507), a foam mixture control switch (508), a high-pressure water flow control switch (509), and an electromagnetic spiral rock-breaking drill switch (510), wherein: The water storage tank (501) and the foam mixture storage tank (502) are arranged symmetrically on the left and right sides and distributed at the rear of the device. Their functions are to store water for use by the high-pressure water jet nozzle (706) of the multi-functional top cutting integrated device (7) and to store foam mixture for use by the foam mixture nozzle (703) of the multi-functional top cutting integrated device (7). The impeller (503) is fixed between the water storage tank (501) and the foam mixture storage tank (502). Its function is to rotate rapidly to generate centrifugal force so that the liquid in the tank enters the conduit. There are two liquid inlets (504), located on the top of the water tank (501) and the foam mixture storage tank (502) respectively. Their purpose is to fill the storage tank with water and mixture. There are two outlets (505), located at the bottom of the water tank (501) and the foam mixture storage tank (502) respectively. Their purpose is to discharge water and mixture from the storage tanks. There are two telescopic conduit storage devices (506), which are fixed symmetrically inside the device and located above the water tank (501) and the foam mixture storage tank (502). They are used to place the water flow conduit (707) and foam mixture conduit (704) of the multi-functional top-cutting integrated device (7). When the multi-stage telescopic rod (710) of the multi-functional top-cutting integrated device (7) extends, the conduit will extend accordingly. When the multi-stage telescopic rod (710) of the multi-functional top-cutting integrated device (7) retracts, the conduit will automatically wind back. A high-frequency AC motor (507) is located below the water storage tank (501) and the foam mixture storage tank (502), and its function is to provide power. The foam mixture control switch (508), high-pressure water flow control switch (509), and electromagnetic spiral rock-breaking drill switch (510) are connected by wires and embedded in the high-frequency AC motor (507). The foam mixture control switch (508) controls the impeller (503) to rotate counterclockwise, thereby allowing the foam mixture to enter the foam mixture conduit (704) of the multi-functional roof-cutting integrated device (7). The high-pressure water flow control switch (509) controls the impeller (503) to rotate clockwise, thereby allowing the water flow to enter the multi-functional roof-cutting integrated device (7). The water flow conduit (707) of the device (7); the electromagnetic spiral rock-breaking drill switch (510) is the power switch for controlling the powerful electromagnet (702) of the multi-functional top-cutting integrated device (7). When the power is turned on, the electromagnet is energized by alternating current, so that the magnetized iron ball (701) of the multi-functional top-cutting integrated device (7) and the powerful electromagnet (702) are attracted and repelled by magnetic force. When the magnetized iron ball (701) approaches the powerful electromagnet (702), they attract each other, and when the magnetized iron ball (701) leaves the powerful electromagnet (702), they generate mutual repulsion.

7. The sonic temperature-controlled electric cutting monitoring device for cutting the roof of a chamber as described in claim 1, characterized in that, The multifunctional top-cutting integrated device (7) includes a magnetized iron ball (701), a powerful electromagnet (702), a foam mixture nozzle (703), a foam mixture conduit (704), a high-strength rock-breaking steel pipe (705), a high-pressure water jet nozzle (706), a water flow conduit (707), a spiral guide rod (708), insulating protective material (709), a multi-stage telescopic rod (710), a high-voltage current conductor (711), a discharge iron core rod (712), and a smooth circular track (713), wherein: Magnetized iron balls (701) are arranged on a smooth circular track (713); A powerful electromagnet (702) is welded onto a multi-functional top-cutting integrated device (7). Four electromagnets are arranged in each multi-functional top-cutting integrated device. After being energized by alternating current, they generate alternating magnetism at a certain frequency, thereby cooperating with the magnetized iron ball (701) to generate high-speed rotation. The foaming agent nozzle (703) is connected at its lower end to the foaming agent conduit (704) for spraying foaming agent; High-strength rock-breaking steel pipe (705) is fixed on magnetized iron ball (701). Each multi-functional top-cutting integrated device is equipped with four steel pipes to break rocks and penetrate soil. A high-pressure water jet nozzle (706) is connected to a water flow conduit (707) and is used to spray high-pressure water jets; The spiral conductor rod (708) is wrapped with insulating protective material (709), which is used to wrap and connect the current conductor to the discharge iron core rod (712). The multi-stage telescopic rod (710) is controlled by the telescopic line control switch (404) of the secondary top cutting control system (4); A high-voltage current conductor (711) is laid between the foam mixture conduit (704) and the water flow conduit (707) to carry current. A smooth circular track (713), welded to a powerful electromagnet (702), is fixed on a multi-functional top-cutting integrated device for placing a magnetized iron ball (701) and providing a high-speed rotating track.

8. The sonic temperature-controlled electric cutting monitoring device for cutting the roof of a chamber as described in claim 1, characterized in that, The device further includes: The portable lifting rod (8) is hinged to the top of the device, making it easy to move the device flexibly during on-site construction. Connect the hinge (9) to connect the multi-functional top-cutting integrated device (7) and the soil-entry grabbing and fixing device (13) to the outer shell of the device; The isolation plate (10) is used to separate the sound wave emitting system from the sound wave receiving input system (2) to prevent mutual interference. Power supply device (11) supplies power to sound wave receiving input system (2) and data analysis and early warning system (3); The bottom telescopic tray (14) extends and retracts via pins, serving a stabilizing and fixing function; The level (15) is embedded in the outer wall of the protective shell of the device and works with the angle adjustment knob of the launching device to verify whether the launching system has reached a horizontal position. The sound-permeable mesh (21) is fixed to the top of the device, and its function is to facilitate the passage of sound waves.

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