Wireless alarm-process alarm and communication
(57) Abstract:The invention relates to the mining industry and is intended for voice announcement miners in underground workings about the accident, call the individual subscriber's communication to the phone and to transfer information technological in nature. The invention aims to expand the functionality of the device while improving reliability of the transmitted information. The device comprises a transmitting and receiving sets. Transmitting the set consists of a reference oscillator, remote control, driver code sequence, frequency divider, power amplifier, antenna. Each receiving set contains the antenna, the selective amplifier, mixers, frequency, heterodyne, Phaser, filters lowpass threshold elements, a phase detector, a decoder. The output of the decoder is connected to the Converter digital signals in speech, through which the low-frequency amplifier connected to a loudspeaker. On the transmitting side of the original information, transferable code in the corresponding binary sequence of binary code combination, which then modulate the carrier frequency with Istvan, demodulated and processed by the decoder, where it is initially allocated a code sequence, which is then converted by the speech Converter, amplifies the low-frequency amplifier and reproduced by the loudspeaker. 1 Il. The invention relates to the mining industry, and in particular to systems for underground wireless communications, and is intended to provide emergency alert miners in underground workings, call any subscriber on the link conditional speech phrases, and also to convey messages of technological nature.It is known device of mine operational and emergency wireless underground workings (and.with. 876999, M CL3E 21 C 35/24), containing mounted on the surface of the earth passing a set consisting of a processing unit and alarm containing a push-button set field code and the nature of the message, encoder, microphone, switch, amplitude compressor, the transmitter audio frequency transmitting antenna in the form of a grounded dipole and power unit and located in underground openings receiving the sets containing each receiving antenna, connected to the power gain is reobrazovateli (loudspeaker) and the power supply.However, the signal transmission of the emergency notification in the speech frequency range from the surface to the underground workings will not solve the issue of the reliability of message transmission due to the uneven passage of frequency components of the speech spectrum and attenuation of certain frequencies while passing signals through the thickness of rock to the subscriber in the underground workings.The closest to the technical nature of the claimed device is a wireless emergency call and information technology shaft signalling and communication (application 93033273/03/032611, M CL 4 E 21 C 35/24, position. Resch. from 15.01.96 year).This device contains a mounted on the surface of the earth passing a set of series-connected reference oscillator, frequency divider, amplifier and systems antennas with earthing switches, and remote control mode, the output of which is connected to the second input of the frequency divider, and the other output panel connected to the second input of the amplifier, and is located in the underground workings of the portable receiving set, which includes an antenna connected to the input of the selective amplifier, the output of which is connected to the inputs of two pair directly and the second input of the second mixer frequency is connected to the same local oscillator via a phase shifter. The outputs of both mixers through the low pass filters each and forth across the threshold elements are connected to two inputs of the phase detector, the output of which is input to decoder commands. Thus the output of the decoder through the current interrupter connected to the lamp miner's lamp for switching the respective coded signals "accident" or "call".However, the decision of the transmission of the coded emergency call signal through the thickness of rocks does not solve the issue of voice messaging underground party that does not contribute to improve the functionality of underground communication.The purpose of this invention is to improve the functionality of underground emergency call alarm and communication.This objective is achieved in that the device is a wireless alarm-process alarm and communications, containing mounted on the surface of the earth passing a set of series-connected reference oscillator, frequency divider, amplifier and systems antenna grounding, and the pool is to control is connected to the second input of the amplifier, and located in the underground workings of the portable receiving set containing the antenna connected to the input of the selective amplifier, the output of which is connected to the inputs of two parallel mixers frequency. The second input of the first mixer is connected to the output of the local oscillator directly, and the second input of the second mixer frequency is connected to the same local oscillator via a phase shifter. The outputs of both mixers frequency through the low pass filters each, and then through the threshold elements connected to the two inputs of the phase detector, the output of which is input to decoder commands. The output of the decoder commands connected to the inverter speech and then through a low frequency amplifier to the loudspeaker.When searching by the patent and scientific literature is not found technical solutions, similar to the features distinguishing the claimed technical solution to the prototype. Therefore, the claimed solution has significant differences.The drawing shows a functional diagram.Wireless alarm-process alarm and communications includes transmitting and receiving sets.Transmitting the kit includes: La power 3, antenna 4 and earthing switches 5 and control 6, the first output of which is connected to the divider 2 and the second power amplifier 3. Thus the output of the reference oscillator 1 is connected to the input of the remote control through the driver code sequence 7. Moreover, the third output control unit 6 is connected to the second input of the shaper 7.Receiving the kit contains the antenna 8 is connected to the input of the selective amplifier 9, the output of which is connected to the input of two parallel coupled frequency mixers 10, 11. The second input of the first mixer 10 is connected to the output of the local oscillator 12 directly, and the second input of the second mixer 11 is connected to the local oscillator 12 through the phase shifter 13. When the outputs of both mixers 10, 11 through the low pass filters 14, 15 and progressing through the threshold elements 16, 17 are connected to two inputs of the phase detector 18. The output of phase detector 18 is connected to the input of the decoder 19 teams, which, in turn, through the speech Converter 20 and then through the low-frequency amplifier 21 is connected to the loudspeaker 22.The basic principle of operation of the device for wireless transmission of information in mining is that on the transmission side is comfort in the corresponding binary code sequence, which then modulate the carrier frequency of the signal emitted by the transmitter with the surface of the earth into the mine through a grounded antenna.In the mine the signal passed by the receiver, demodulated and processed by the decoder, where it is divided code sequence necessary information signal, which is then converted into a speech signal.Let us consider in more detail the operation of the device. When you set the required sequence of buttons of the remote control 6 (a keyboard 6 not shown) of the imaging unit 7 generates the appropriate code sequence (codogram) of the signal from the reference oscillator 1. At the end of codogram signal from the imaging unit 7 is fed to the input of the control unit 6 and further to the control input of the divider 2. At the same time on the other input signal from the reference oscillator 1. In the divider 2 based on the code sequence received from the imaging unit 7 through the control panel 6, is formed by frequency-shift keyed signal level "0" corresponds to the frequency 1, and level "1" corresponds to frequency 2). Next, the signal is amplified by the amplifier 3 and the antenna 4 through tatematsu, accepted by the receiving set, in particular its antenna 8, converted to electric, amplified broadband selective amplifier 9 and then served on the first inputs of the mixers 10, 11, on the second inputs to which the signals from the local oscillator 12 directly to the mixer 10 and, via the digital phase shifter 13, the mixer 11. The outputs of the mixers 10, 11 appear harmonic oscillations of the difference frequency, and these signals are shifted relative to each other on the 90o.Both the received signal passes through the low pass filters 14, 15 and fed to a threshold elements 16, 17. Then through the phase detector 18, which is formed of a digital signal corresponding to the transmitted information signal is transmitted to the decoder 19, which are formed corresponding to the transmitted signals of the accident, call or necessary technological signals. After the decoder 19, the signals are sent to the Converter 20, and then, after passing through the low-frequency amplifier 21, is reproduced by the loudspeaker 22.Using this system subsonic and encodes them for transmission of signals through the thickness of rocks allows to solve the problem of expansion of functional capability, the proposed invention allows, in addition to timely alert miners of accidents and in addition individual call any employee to link to the phone to give him the necessary technological information in the speech that allows you to extend the functionality of an underground emergency call alarm and communication. Wireless alarm-process alarm and communication with underground workings, containing mounted on the surface of the earth passing a set of series-connected reference oscillator, frequency divider, amplifier and systems antennas with earthing switches, and remote control modes, connected to the output of the reference oscillator through the driver code sequence, the outputs of the remote control is connected to the second inputs of the frequency divider and amplifier, and is located in the underground workings of the receiving bundle that includes the antenna connected to the input of the selective amplifier, the output of which is connected to the inputs of two parallel mixers frequency, the second input of the first mixer is connected to the output of the local oscillator directly, and the second input of the second mixer frequency is connected to the local oscillator through a phase shifter, the outputs of each mixer of cytotecstore, the output of which is connected to the input of the decoder commands, characterized in that, to improve the functionality of the device, it is provided with a series-connected inverter speech, the low-frequency amplifier and loudspeaker, and the input speech Converter connected to the output of the decoder commands.
FIELD: mining industry.
SUBSTANCE: device has two asynchronous electric engines, connected via reducers to drive sprockets of continuous traction chain, provided with plane carriages with their possible displacement along the guide, and hydraulic cylinders for displacing guide on pit-face. To windings of stators of first and second electric engines connected respectively are outputs of first and second frequency converters, inputs of which are connected to power grid and control inputs of which are connected respectively to outputs of first and second frequency adjusters. To frequency adjusters also connected are inputs of load detectors, to outputs of which load balancing block is connected, outputs of which are connected to inputs of first frequency adjuster. To inputs of both frequency adjusters output of load adjuster is connected, inputs of which are connected to load-setting block and load sensor for second engine. To output of second frequency converter connected are input of control block, other input of which is connected to signal block of base plant, and stator winding of third asynchronous engine, which via mechanical link is connected to first and second hydraulic pumps, having constant working volumes. Output of first hydraulic pump is connected to force hydro-main and input of second preventing hydraulic valve and to first inputs of two-position hydraulic distributors with electromagnetic control, to electromagnets of which outputs of control block are connected. Second inputs of two-positional hydraulic distributors with electromagnetic control are connected to control chambers of hydro-controlled two-positional hydro-distributors, which are part of hydro-blocks. Outputs of hydro-controlled two-positional distributors are connected to opposite hollows of volumetric dosing device of each hydro-block, and their inputs are connected respectively to outputs of hydro-distributors for controlling hydro-cylinder for moving the guide on pit-face, inputs of each of which are connected to force and drain hydro-mains, and outputs are connected to piston and rod hollows of appropriate hydro-cylinder.
EFFECT: higher efficiency.
FIELD: mining industry.
SUBSTANCE: mining combine has extraction means, on which a body is mounted, having at least one first liquid outlet, for supplying liquid to material. Pipeline, through which liquid is fed to first liquid outlet, contains means for measuring flow and/or pressure of liquid in pipeline, for determining, in which of to layers outlet is positioned. Combine can have at least one second liquid outlet, placed in such a way, that first liquid outlet is in lower layer, and second liquid outlet is placed in upper layer. First liquid outlet can have one of multiple first liquid outlets spaced from each other, and second liquid outlet - one of multiple spaced from each other second liquid outlets. Efficiency of liquid flow through multiple spaced first outlets can surpass those of multiple spaced from each other second liquid outlets. Placement of second liquid outlet in separate body cover is possible. First and second liquid outlets can be directed downwardly relatively to direction of mining combine displacement. Method for controlling depth of position of mining combine extraction means includes placing two liquid outlets, interacting with material extraction means, in a material, while second liquid outlet is placed above first liquid outlet, liquid is fed to first and second liquid outlets and flow and/or pressure of liquid is measured. Layer, wherein liquid outlet lies, is detected, and first liquid outlet is placed in lower layer and second liquid outlet is placed in upper layer, to determine depth of position of extraction means relatively to two layers.
EFFECT: higher precision.
2 cl, 9 dwg
FIELD: mechanical engineering, particularly to perform remote control specially adapted for machines for slitting or completely freeing the mineral.
SUBSTANCE: system includes electric drive for cutting tools, hydraulic drive for feeder legs and crawler, two-stage control hydroblock to operate the hydraulic drive having inlet channel, hydrocylinder with piston cavity for support erector, control hydroblock adapted to operate support erector hydrocylinder, blocking hydrocylinder having spring-loaded shaft return means, two-positioned pilot spool, pumps, pressurizing means and discharge means. Pilot spool has outlet channel and hydrocontrol cavity to provide pilot spool fixation in two working positions. Outlet channel of pilot spool communicates with outlet channel of two-stage control hydroblock adapter to operate the hydraulic drive of feeder legs and crawler to provide alternate communication between outlet pilot spool channel and pressurizing and discharge means. Hydrocontrol cavity of pilot spool communicates with blocking hydrocylinder and piston cavity of support erector hydrocylinder.
EFFECT: increased safety for people present in zone of moving mining machine parts action.
FIELD: mining industry, particularly for drilling exploratory and pressure-relief wells before mineral extraction from formations, including outburst-dangerous formations and ones characterized with high gas content.
SUBSTANCE: drilling rig comprises housing, support, drive to rotate drilling rod provided with cutting tool and hydraulic cylinder for cutting tool pulldown. Electrohydraulic valve is installed in hydraulic cylinder circuit. Electric drive of electrohydraulic valve is linked with load-sensing unit, which detects load applied to drilling rod rotation drive. The electric drive is connected to load-sensing unit through amplifier relay to provide bringing amplifier relay into operation when load applied to rotation drive exceeds nominal load by 20-30%. Cutting tool is made as symmetric screw conveying surfaces defining forward and reverse strokes connected one with another through generatrix. Side cutting edges of surfaces defining forward and reverse strokes are spaced apart.
EFFECT: increased operational reliability along with reduced power inputs for drilling, possibility to remove rod from well with negligible deviation thereof from predetermined direction of drilling.
2 cl, 3 dwg
FIELD: mining, particularly remote control specially adapted for machines for slitting or completely freeing the mineral.
SUBSTANCE: device comprises the first, the second and the third asynchronous motors. The first and the second electric drives are connected to drive sprocket of closed pull chain provided with plough carriages, which may move along guiding means. Device also has hydraulic cylinders to move guiding means to face, mechanical gear, the first and the second safety hydraulic valves, the first and the second hydraulic pumps, the first and the second frequency converters, the first and the second frequency regulators, load sensors, load balancing unit, load regulator, load assignment unit, control unit, initial setting signaling unit, hydraulic distribution means, which control hydraulic cylinders to move guiding means to face, hydraulic units, electrohydraulic unit, channel switching unit, flow meter, excavated seam thickness setting unit, breakage face length setting unit, multiplication unit, divider, optimizing peak-holding controller, control signal generation unit, asynchronous single-phase motor and screw gear made as a nut and screw. The first and the second hydraulic pumps include volume regulation means.
EFFECT: reduced specific energy consumption along with increased front plant output.
SUBSTANCE: invention relates to mining, in particular, to navigation system of combined cutter-loader intended for operations in open-pit bench. This mining equipment includes a combined cutter-loader, a conveyor assembly, and a steering assembly, which joins said combined cutter-loader and conveyor assembly. In addition, this equipment includes a course sensor and a steering device, which is sensitive to signals from said course sensor. The first drive is located in combined cutter-loader, in conveyor assembly, or in steering assembly. The first drive is placed on one side of combined cutter-loader centreline. In addition, the second drive is located either in combined cutter-loader, or in conveyor assembly, or in steering assembly. The second drive is placed on another side of combined cutter-loader centreline. The first and the second drives are used to adjust angle of joint between combined cutter- loader and conveyor assembly on either side of parallel line in order to keep pre-defined direction of combined cutter-loader advancing.
EFFECT: precise driving of combined cutter-loader in order to increase coal cutting from mining zone.
22 cl, 13 dwg
SUBSTANCE: device for control over arrow of operating member of mining machine consists of hydro-cylinders of vertical lifting an horizontal turn and of arrow telescope, of half-throttle, included into line feeding working fluid into piston cavities of lifting hydro-cylinders, of double-sided hydro-locks included into feeding lines of lifting hydro-cylinders and telescope, of main distributors of hydro-cylinders control for lifting, turn and telescope, which are successively arranged to provide free overflow of working fluid into tank in neutral position, of main electro-hydro-distributors for control over main distributors and over additional distributor automatically switched on. There is also a main and additional pumps, a pressurising collector, safety valves, test pressure gages, a pressure regulator, a tank for hydro-system working fluid, and a control panel with buttons for six commands. Further the device contains a control station with a circuit of three memory elements and the element of logical function or operation, additional distributors with back valves on their outputs and correspondingly with throttles on control lines, pointed sensors of feedback, installed correspondingly on the hydro-cylinders and connected to memory elements.
EFFECT: power stabilisation of operating member of mining machine, increased efficiency of working member drive operation, increased energy saving at mine working and grade of extracted coal.
3 cl, 4 dwg
SUBSTANCE: system consists of optical master of direction- laser, of diaphragm, of photo-receiving device, of interface module, of sensors of position of each degree of actuator mobility, of tilt sensor, of blocks of control over electro-hydro-valves and of computer device. The photo-receiving device consists of semi-transparent mirror assembled at angle of 45° to lengthwise axis of the case of the device, of two screens - the tail and knife ones with zero-marks, and of two video-modules. The tail screen is arranged above reflecting surface of the semi-transparent mirror so, that it is parallel to lengthwise axis of the device, while the knife screen is located at some distance beyond non-reflecting surface and perpendicular to lengthwise axis. Each video-module is installed behind the corresponding screen at the focal distance of the objective.
EFFECT: upgraded reliability and efficiency of control over actuator.
SUBSTANCE: group of inventions is related to system and methods for control of getting machine along bottomhole in underground mine tunnel, and also to mining face for method realisation. Method includes measurement of gas concentration and depending on measurement results, generation of warning signal. At the same time volume of production achieved by getting machine is additionally established. In case of insufficient correlation between volume of production and gas concentration, a warning signal is generated.
EFFECT: invention provides for possibility to minimise danger of methane gas explosion in mining face, to establish fact of gas sensor failure and/or manipulation with it.
26 cl, 3 dwg
SUBSTANCE: device for orientation of tunnelling system during construction of curved tunnels includes the units located in line of sight and at the specified distance from each other, the end ones of which are rigidly fixed, one - in starting tube, and the other one - on tunnelling shield, intermediate units are installed inside the erected part of the tunnel, each unit is equipped with a photo sensor, light emitting element and roll sensor, also, the device is provided with sensor of amount of advance and data transfer channels between the device assemblies and computing unit with a display; at that, each unit is equipped with a plate with sector symmetric light-tight slots, plate is located on motor shaft the axis of which coincides with the direction of tunnelling operation, on both sides of the plate in horizontal and vertical planes passing through motor axis there installed are light-emitting elements directed to the plate side; at that, each unit contains differently directed photo sensors oriented parallel to motor axis.
EFFECT: improving the orientation accuracy of tunnelling system and operating characteristics of the device, and increasing standardisation of the device components.