System to control lining sections at mine breakage face

FIELD: mining.

SUBSTANCE: system includes multiple control units (CU), each positioned at the respective section and functionally conjugated thereto. The CU of each section features multichannel transceiver, whereby a CU communicates to a portable decentralised control device for controlling signal reception and measurement and condition data transmission in the simultaneous transceiving mode. Section CUs are programmed so that controlling signals received by radio are not converted into lining section functions unless the controlling signal carries a code word assigned to the addressed CU. Section CUs are preferably interconnected by two electric buses for transmission of entered data to all section CUs and feature amplifier for restoration of signals received via electric bus.

EFFECT: improved operation reliability of winning machine and powered support due to sustaining safe and fail-proof operation at low cost.

3 cl, 3 dwg

 

The present invention relates to a control system support is designed to control the movements of shields in a mining face (the face) of mine. This control system is known, for example, application DE 10207698.7 A1 (TVT 2104) and DE 19982113.5-24 A1 (TBT 9805).

This management system support allows you to control individual sections of powered roof supports, referred to in this description of the sections of the shield lining, with a Central control device or through a separate control units (control units sections shield lining), located at the respective sections of the shield lining or managed from a remote radio control. In principle, the remote control commands are received in the control unit of one of the sections, equipped with a receiver. Then from the control unit in this section shield lining manages the adjoining sections or more adjacent sections. In principle, the control signals are fed to the control units of all sections common to all units of the line. However, the control units of the sections are programmed so that on command on-off switch reacts before their implementation, only the control unit, which is assigned to the code word sent from the management team. All other modules of sections transmit the control signal is a code word further. When the input control command is the class a common line (electric bus).

The present invention is to create a management system support, allowing the exchange of signals between the remote control and control sections in both directions (full duplex) and, in particular, allows to send with the control signal and other signals.

The solution of this problem is due to the fact that:

the control unit of each section is equipped with multi-channel transceiver radio station,

each transceiver stations configured to establish radio contact with remote control,

through radio contact remote control with transmitter and receiver radio control unit one of the sections is provided to transmit control signals to the control unit of any other section, and receiving measurement data and status data from the control unit to any other section in the mode of simultaneous transmission and reception,

the control units of the sections are interconnected electric bus for transferring data to the control units of all sections so that any control signals to the control unit of one of the sections through radio contact with the transceiver radio eligable management and any measurement data and status data sent by the control unit of one of the sections, handed down in the control units of all other sections,

the control unit of each section configured to convert the control signals received by radio to the control unit of one of the sections and transmitted via the electrical bus in the control units of all other sections, the function of the shields only block management section, which is assigned a code word transmitted from the control signal,

the control unit of each section is programmed so that the measurement data and status data were given and then transmitted through the electrical bus to the control unit section that is assigned a code word transmitted from the control signal.

The advantage of the proposed solution consists in the possibility of control downhole equipment in General, including section control panel supports and treatment (extraction) machines, with remote control, preferably handheld remote control, while monitoring the results of management by examining sent back data about the current status and measurement data. In particular, when starting the installation, you can sequentially and separately to poll the units control the Oia from all sections of the shield roof support for monitoring their condition or to operate in a test mode, and the operator can follow the development of the coal front and controlled the movements of the fixing device and to check the correct attachment of lava. Still, this was impossible due to the lack of reverse signaling. On the other hand, the invention makes unnecessary the presence of staff in the mine, in particular, in the danger zone of the moving sections of the shield supports and extraction devices.

The distance between the remote control and the unit control section, connected by radio communication, is always short and foreseeable, whereas in the control units of the more remote sections of the shield supports the data is transmitted over the cable, which makes this transfer is insensitive to interference. On the other hand, due to the proposed invention the multi-channel simultaneously with the introduction of any control signal provided for monitoring the status of the call control unit that allows you to immediately notice a malfunction in the transmission of signals by radio or by cable. Thus take into account the requirements of safety in mining.

The control units of the sections can be interconnected, and preferably with a Central control device, a second, similar, electric bus, also called parallel bus. This allows you to adjust the density of the data p is the cable with density data from the radio data.

Because of the length of the stope, or lava, there is a danger that in the transmission of signals from the control unit of one section in the control unit of another partition shield roof support cable (electric bus) these signals will be weakened so that the remote control units and the Central control device will not be able to accept them or to interpret correctly.

This issue is fixed for both electric buses, respectively, for all transmitted signals due to the fact that in the particular preferred embodiment of the invention the control unit of each section may have an amplifier for amplifying signals at least one of the two electric buses and do not have a code word assigned to the relevant control unit.

Regardless of the input control signals, the invention can also be passed to the operator, respectively, to the Central control unit, the signals from the measuring devices or other status signals. Similarly, for each control signal, simultaneously and without delay in time, may be issued a handshaking signal, which is confirmed by the receipt and/or execution of the control command.

Below is an example implementation of the invention with reference to the accompanying drawing of which, showing:

figure 1 is a view in section of stope with lining;

figure 2 - schematic top view of the mining machine and a group of shields;

figure 3 - scheme of the mutual arrangement of the Central control unit and controls sections of the shield supports.

Figure 1 shows one of the sections 1-18 of powered roof supports. Figure 2 shows several sections 1-18 lining. Support units are located along the reservoir 20. Development of the reservoir 20 is the cutting tool 23, 24 cleaning machine 21 in the direction 22 of manufacture. In this example, the execution of the invention, the treatment machine made in the form of excavation (electric) cars 21 of the cutting action.

Extraction machine 21 can move in the direction 19 of cutting through not shown in the drawing reinforced Shearer cable. She has two cutting drum 23, 24, which are mounted at different heights and cut into the coal wall, beating coal. The broken coal is loaded excavation machine, also called treatment harvester on the conveyor. The conveyor consists of a tray 25, which is along the front of the coal face moves heavy scraper conveyor. Extraction machine 21 mounted for movement along the front of the coal face. The tray 25 is divided into separate sections, which, being connected to each other, can move otnositelnogo other in the direction 22 of manufacture. Each section of the tray is connected with its corresponding section 1-18 supports power cylinder 29 (gidrotartrat shifting), which is an Executive body. Each of the shields can be used to mount stope. This goal is yet another of the power cylinder 30 (props), arching support and roof slabs. Roofing plate on its front, facing the reservoir end, is the so-called protivoatomnoi flap 48 (hinged shield or visor to keep the coal from the rash of the face and roof)that is designed to maintain the plane of the face. This flap can be rotated in the direction of waste coal wall. Before driving the mining machine 21 protivoatomnoi plate 48 must be removed. For this purpose, there is another power cylinder, not shown. These functional elements separate sections of powered roof supports are presented here only as an example. There are other functional elements, but for the understanding of the invention their review and description is not required.

As mentioned above, each of the Executive departments is a hydraulic cylinder.

These cylinders are driven by the main valve 44 and the auxiliary valve 45, used for pre-amplification of the regulatory impact. For accessories the m valve device 40 of the control valve, i.e. the case with the device control valve.

In figure 2 the mining machine shown in the process of movement to the right. So protivoatomnoi flap section 17 of the lining must be removed, i.e. folded back. On the other hand, the section of the tray 25, which is at section 9 of the lining, which is in the direction 19 movement is behind the mining machine 21, is moved forward in the direction of working of the coal wall. Also ahead, towards the bottom, respectively, to the working of the coal wall, move the subsequent sections 8, 7, 6, 5 and 4 in the liner. These shields protivoatomnoi flap back folded down. Sections 3, 2, 1 roof supports are advanced to the ready position and remain in this position until such time as the mining machine is again approaching on the right. The control of these movements is partly performed automatically, depending on the motion and the instantaneous position of the mining machine and partly by hand. To this end each section 1-18 lining corresponds to a control unit 34. The control unit 34 refers to one of the sections 1-18 supports and is connected with 45 auxiliary and main valves 44 all Executive bodies of the sections 1, 2, 3... (up to 18) lining through the appropriate device 40 control valves (microprocessor). Any of the control units of shields you can use enter or retrieve data (survey). However, a group of several control units of the sections may be subordinated to the device 33 control mechanisms stope or all control units of the sections can be made to enter data to the Central control device support (main 50 and/or 51 auxiliary devices centralized management)which communicates with the control units of sections. This option is shown in figure 2.

The Central control device support consists of the main 50 and 51 of the auxiliary devices centralized control.

All blocks 34 section control panel supports are interconnected by a cable 58 (electric bus). Through each of these control blocks of the partition panel lining transmitted entered or issued control commands, status data, or other data. The management team when referring to specific sections of the support causes a particular function, for example, in terms of discharge hydraulic rack, the movement section of the thrust section. This command is accepted and transferred further to the electrical bus 58 all the blocks 34 of the control sections of the shield supports. Team management support, respectively, control commands can be entered manually on the host 50 or 51 auxiliary device Central management device 33 of the control mechanism is smame stope, which is subordinated to the corresponding group of control units support units, or through the remote control 37 control. The entered control commands support is transferred to the main 50 or 51 auxiliary devices Central management unit 33 of the control mechanisms stope, or 37 remote control in the control unit of the nearest section of the shield supports. Then the control commands received from the control unit in this section of the shield supports for electrical bus 58 in blocks 34 management of all other sections of the shield supports. However, due to pre-coding this command activates practicing certain steps of the control unit only one of the sections 1-18 shield lining, or the control units of a certain group of sections of the shield supports. Then activated the unit control section converts the received control command in command, control valves, supplied to the control valves, respectively, the main valves serving the mechanisms of the corresponding (-) section(s) supports.

Automated calling functions and their testing process is described, for example, in the application DE-A1 19546427.3.

Turning to the control unit section (enter it team) at the same time is initiated by issuing the control unit state data of the respective functional elements, such as the silt cylinders, and other measurement data. This information is then passed back on to the electrical bus 58, and the control unit nearest section transmits them at least in the device from which the command was entered, i.e. in the main 50 or 51 auxiliary device Central management unit 33 of the control mechanisms stope, or 37 remote control. Thanks to this operator, which introduced the management team can immediately check is fulfilled if the corresponding function.

Similarly, you can enter the polling command, guiding them through coding in the control units of certain sections. Thus, the Central control station can monitor the status of all control devices and partitions shield lining, and due to the small distances, which is supported by radiocontact, interference or failure in signal transmission is unlikely. As noted above, for centralized manual input of commands intended device 37 of the control executed in the form of a manual remote control and carry with you the operator. To enter commands, the operator can stand outside the lava in the roadway, or at least away from the site of direct extraction of minerals.

The manual control unit is connected by radio communication with the radio 38 provided for the each block of the control section of the panel lining. When the control unit is located closer to the operator all, will take the strongest radio signals. Accordingly, this control unit then transmits the received signal further according to the electrical bus 58, allowing the control unit activated by a code word to be able to react accordingly to the signal. However, one of the radio channels is transmitted simultaneously to the handshaking signal caused from the control unit, and preferably by electric bus 58 to separate transceiver station also sent a signal that indicates the status and change of state, so that the remote control is transmitted simultaneously to the strongest signal, which could come from the nearest control unit section shield lining. Thus, the operator can directly control the output of the command.

Thanks to multi-channel radio contact manual remote control via the control unit of one of the sections with the control units of all other sections and with the main and auxiliary control devices and device management mechanisms stope remote control can simultaneously encompass all communication in a mining face, which eliminates the possibility of conflicting control commands.

The manual is ult management in the form of a parallelepiped has on one side (controls) control buttons. Using these buttons you can also enter code sagastume currently control unit shield (one of the blocks 34.1, 34.2 ... control sections shield lining) and to issue a control command to call the specified function or mode of its execution (for example, unloading hydraulic rack or shifting of the shields). For the wireless transmission is used, for example, the antenna 39 manual remote control.

If the operator will turn the manual control unit 180° around its longitudinal axis, he will see his side control. On this side on the remote control there are two diodes, display, and other buttons. The operator can cover both diode of his helmet lamp. And only if he closes one of the diodes, for example, a finger, the remote control will go into monitor mode. To perform control operations, the operator enters the code on the test cell lining. While the manual control unit is connected by radio with the nearest control unit section shield lining, as has been described above in relation to the transfer control signals. As a result, radio and cables 58, 59, connection to the control unit shield section, responsive to input code word. The present invention makes possible a direct dialogue. For this purpose, the operator by pressing one of the buttons on raliway certain functions or modes of operation. With this purpose, the control unit shield program, with which you can query or series of queries regarding the availability of certain functions, the operating status of the section (unit) supports and exactly perform these functions. Then the received data is simultaneously transmitted through cables 58, 59 in the control units of adjacent sections, with one of these blocks radio control manual remote control and displayed on the display. Thus, the operator can be sure that some support is still working or already require maintenance, replacement of functional elements or controls.

Thus it is possible to simulate the lining in the test mode. However, to check the lining in the test mode it is possible and practicable, for which the operator is in place, using the controls on the hand-held remote control in turn to each block of the control section of the shield supports and gives a command to perform one or more functions. Synchronous postback state data and state changes allows you to check whether working posts of the stope and is it possible to let it work.

The result is a safe, reliable and safe operation of mining machines and mechanized is ripe with minor maintenance costs.

It has already been mentioned that the blocks 34 of the control sections of the shield supports are interconnected by a cable 58, which in the above-described embodiments, only has two cores and is used for serial transmission of code words and control commands for mechanisms lining. The incoming team react only those blocks 34 of the control, respectively, the partitions shield lining, for which the stored code word is identical to the transmitted codeword. Thus, the cable 58 is a two-conductor cable, laid in the form of electric bus from the control unit 34 of one section of the shield lining to the control unit of the next section and connecting with each other through adjacent blocks 34 control sections shield lining, the main 50 and 51 auxiliary devices centralized control.

In accordance with the present invention instead used still only a two-wire cable 58 in parallel with it laid the second two-conductor cable 59, referred to in the present application is a parallel bus. The cables 58, 59 are also known as electric buses.

The principle of connecting cables in separate blocks 34 of the control sections of the shield roof support shown in figure 3. Many control blocks of the partition panel lining shows two such blocks 34.1 and 34.2 management. The control units with the capabilities of shield supports are connected by electric buses 58 and 59 with the main device 50 Central management and support device 51 of centralized control. Electric bus 58 contains two phases 58.1 and 58.2, and the electric bus 59 - two phases 59.1 and 59.2.

All four phases of both electric tire is connected to the input 52 of the blocks 34.1, 34.2, ... control sections shield lining. The signals from the input items are processed in the control units of the sections of the shield supports, i.e. checked for compliance with the code word transmitted together with the signal, so the code word that is assigned to the corresponding unit 34 of the control section of the panel lining and stored in memory. Since the transmitted signals are control signals, it is then appropriate treatment and transfer them to the appropriate functional elements of the partition panel lining, which were described above.

Single phase and 58.2 59.2 each electrical bus connected to the switching element 53. The corresponding phase out of the switching element 53 through the output and then fed to the corresponding switching element 53 block 34.2 control adjacent partition panel lining. In the switching element 53 both phase and 58.2 59.2 can be opened simultaneously or separately.

Another phase and 58.1 59.1 electric tire, respectively, 58 and 59 in this case connected to the element-amplifier 54. With the release of this element of the amplifier corresponding phase connected to the element of the y-amplifier unit 34.2, ... control adjacent section shield lining. In this case, each block 34.1, 34.2, ... management section of the shield lining has a "right" input element 52, which receives and processes the signals coming from the right side, i.e. from the auxiliary device 51 centralized control or block 34.3, ... control is located to the right of the partition panel lining. Thus, blocks 34.1, 34.2 control adjacent sections of the shield supports also are connected by two cables, each of which has two phases.

The switch 53 with its two switching elements is normally closed, allowing the passage of current through it. However, in case of any fault occurs in the interruption of electric buses. First, this makes it easier to troubleshoot. To this end one of the control devices (master device centralized management, assistive device centralized management, handheld remote control, device control mechanisms stope or the control unit section) opens separately and alternately switching elements of the control units of the sections of the shield supports located to the left or to the right, and then sends the control signal. Since the control signal immediately acknowledged, also with the help of p is edlagaemoe in the invention of radio communication, the respective control units of the partition panel lining, into which he entered, so you can determine which of the control units of the sections of the shield supports are detached from the defective control unit section shield lining. Secondly, the opening can be made in case of failure to isolate the defective module shield and disconnect it from the electrical bus, respectively, of electric buses. This provides access to the control units of other sections of the shield support, and Troubleshooting can be done without stopping the work in a mining face.

In the element-amplifier 54 is recovered, the incoming digital signals. This is achieved by the fact that the element-power sets, exceed the incoming signals a certain predetermined threshold value. If Yes, then the output signals are generated greater force, preferably signals the initial force to ensure the passage of signals through the control units of all sections of the shield supports. This type of amplification seems particularly appropriate, since the control signals, measurement signals, etc. are transmitted in digital form.

As a result, even in an underground working possible reliable, without interference, the transmission of radio signals of a given position is of and driving directions as well as the control data. Reliable management support is also possible for a considerable length of the stope. To this end, the control system is designed with the feature that the signals are transmitted by radio only to the closest in space to the control unit, while in other units of the control signals are transmitted through cables for recovery to the desired signal strength. Through the use of shared computing resources can be reliably measured sections of the support requested in a given time.

Now if one of the devices 50, 51 centralized control or on the radio device 37 input (figure 2) in the system will be the management team, this management team will be transmitted on the electrical bus 58 or 59, which at the moment will be free. When this control commands are described above, through separate blocks 34.1, 34.2, ... control sections shield lining. Only triggered by the control unit section shield lining, for which a stored code word coincides with a code word, which is supplied with the control signal. Receiving and/or executing the corresponding control command can be confirmed by handshaking signal, because there is one of two electric tire 58 or 59, as well as radio. The handshaking signal which may be transmitted immediately and without time delay, so on the input device, i.e. on the host device 50 of centralized control, auxiliary device 51 centralized control or on the device 37 management, it is also possible immediate control. Appropriate control signals are transmitted to the device 40 of the control valve (figure 1). The result triggered the Executive solenoid pilot valve 45 for more gain and is driven by the main valve 44 Executive body 30. After that, the signals of the pressure sensors located at each of the Executive departments and/or valves, can also be transmitted back to electric buses.

1. Management system support is designed to control the movements of the sections of the shield supports and penetrations in a mining face of the mine, containing a Central control device and a multitude of control units, each of which is located in the corresponding section and functionally with it connected, and the control units of the sections are connected by wireless communication with the remote (37) control designed for input of control commands and reverse transmission of control data, characterized in that

the control unit of each section is equipped with multi-channel transceiver radio station,

each of primemover is giving radio stations configured to establish radio contact with the control (37) control,

through radio contact console (37) control with transmitter and receiver radio control unit one of the sections is provided to transmit control signals to the control unit of any other section, and receiving measurement data and status data from the control unit to any other section in the mode of simultaneous transmission and reception,

the control units of the sections are interconnected electric bus (58) for transmitting data to the control units of all sections so that any control signals to the control unit of one of the sections through radio contact with the radio transceiver of the control unit, and any measurement data and status data sent by the control unit of one of the sections, handed down in the control units of all other sections,

the control unit of each section configured to convert the control signals received by radio to the control unit of one of the sections and transmitted via the electrical bus in the control units of all other sections in the function of the shields only block management section, which is assigned a code word transmitted from the control signal,

the control unit of each section is programmed so that the measurement data and data with the standing issue and further transmitted through the electrical bus to the control unit section, assigned to the code word transmitted from the control signal.

2. Management system support according to claim 1, characterized in that the control units of the sections are connected, and preferably with a Central control device, a second similar electrical bus (parallel bus 59).

3. Management system support according to claim 1 or 2, characterized in that the control unit of each section has an amplifier for amplifying the signals, at least one of the two electric buses and do not have a code word assigned to the relevant control unit.

Priority items:

21.12.2002 according to claims 1-3.



 

Same patents:

FIELD: mining.

SUBSTANCE: lining sections are connected to an expansion tensioner (ET) conveyor consisting of power cylinders. The lining is equipped with a control system performing data collection and storage and programming continuous concordance of holding force distribution along the breakage face and/or amount of holding forces along the breakage face (total holding force) and/or advancing force distribution along the breakage face at given conveyor position. It allows determining total holding force in respect to the maximum set for it, by ET number, affecting total holding force by axial force adjustment for separate ETs, or affecting total holding force depending on the position of at least one end conveyor section.

EFFECT: minimisation of expansion tensioner number and pressure feeding them at reduced cost.

9 cl, 4 dwg

FIELD: mining.

SUBSTANCE: invention relates to the mining industry and is intended for monitoring movements of sections of the shield support in the working face of the mine. The system has a central control unit (CCU) and a number of peripheral control units (PCU), each of them being located beside the appropriate section and conjugated functionally with the same. PCU of sections are connected with CCU and interconnected by two electric buses so that each PCU can be activated from CCU or from an adjacent PCU for input of a control command. PCU of each section is programmed so as to transmit control commands received through the electric bus provided with a code word assigned to PCU to be activated. Besides PCU of each section has a switch, which enables to disconnect electric buses. By means of the second similar electric bus (the parallel bus) the input signal not provided with the code word assigned to PCU to be activated can be transmitted to PCU of the adjacent section.

EFFECT: safe, trouble-free and reliable operation of the winning machine and the powered support with insignificant expenses for maintenance.

3 cl, 3 dwg

FIELD: mining industry.

SUBSTANCE: method for extraction and underground use of coal includes cleaning extraction and dumping of coal, fixing and controlling ceiling and transporting coal along face to drift. On the drift, in moveable generator, coal is pulverized for intensive burning with use of jets in water boiler firebox, where high temperature of steam is achieved (about 1400 C), enough for decomposition of water on oxygen and hydrogen. These are separated, then oxygen is fed back to jets, and hydrogen is outputted along pipes and hoses in drifts and shaft. Variants of underground generator for realization of this method are provided. Also provided is method for extraction of disturbed coal beds by short faces. It includes extraction and dumping of coal on face conveyor, fixing of ceiling behind combine, moving conveyor line and support sections in direction of cleaning face displacement, control of ceiling with destruction and partial filling. Extraction of coal is performed in short curvilinear faces by long stripes along bed, in straight drive without forwarding drifts, with preservation and reuse of ventilation and conveyor drifts, equipped with mounting manipulator robots, with fixing behind combine by automatically operating support deflectors without unloading and displacing sections in area of coal extraction. Extraction and transporting of coal is performed by fast one-drum combine and curvilinear reloading conveyor, supplying coal to drift conveyor or immediately to underground gas or energy generator placed immediately on drift. Also proposed is face scraper conveyor for realization of said method, wherein pans are made with step along front face profile, greater, than along back one, while forming common line curved towards face with constant curvature. Also proposed is a method for controlling complex for unmanned coal extraction.

EFFECT: higher efficiency, effectiveness, broader functional capabilities.

8 cl, 5 dwg

Shield // 2219344
The invention relates to mining and can be used in mechanized mount Stopes in underground mining

Shield // 2215156
The invention relates to mining and can be used in mechanized mount Stopes in underground mining

Shield // 2215153
The invention relates to mining and can be used in mechanized mount Stopes in underground mining

The invention relates to remote actuation of one of the many control devices for racks in the underground lining slaughter

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The invention relates to mining and mining concerns lining, designed to mehanizirovannye mining, mainly in the development of coal

FIELD: mining industry.

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EFFECT: higher efficiency, effectiveness, broader functional capabilities.

8 cl, 5 dwg

FIELD: mining.

SUBSTANCE: invention relates to the mining industry and is intended for monitoring movements of sections of the shield support in the working face of the mine. The system has a central control unit (CCU) and a number of peripheral control units (PCU), each of them being located beside the appropriate section and conjugated functionally with the same. PCU of sections are connected with CCU and interconnected by two electric buses so that each PCU can be activated from CCU or from an adjacent PCU for input of a control command. PCU of each section is programmed so as to transmit control commands received through the electric bus provided with a code word assigned to PCU to be activated. Besides PCU of each section has a switch, which enables to disconnect electric buses. By means of the second similar electric bus (the parallel bus) the input signal not provided with the code word assigned to PCU to be activated can be transmitted to PCU of the adjacent section.

EFFECT: safe, trouble-free and reliable operation of the winning machine and the powered support with insignificant expenses for maintenance.

3 cl, 3 dwg

FIELD: mining.

SUBSTANCE: lining sections are connected to an expansion tensioner (ET) conveyor consisting of power cylinders. The lining is equipped with a control system performing data collection and storage and programming continuous concordance of holding force distribution along the breakage face and/or amount of holding forces along the breakage face (total holding force) and/or advancing force distribution along the breakage face at given conveyor position. It allows determining total holding force in respect to the maximum set for it, by ET number, affecting total holding force by axial force adjustment for separate ETs, or affecting total holding force depending on the position of at least one end conveyor section.

EFFECT: minimisation of expansion tensioner number and pressure feeding them at reduced cost.

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FIELD: mining.

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EFFECT: improved operation reliability of winning machine and powered support due to sustaining safe and fail-proof operation at low cost.

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FIELD: engines and pumps, mining operations.

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EFFECT: faultless connections.

8 cl, 3 dwg

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FIELD: mining.

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7 cl, 2 dwg

FIELD: mining.

SUBSTANCE: equipment consists of electric-hydraulic driven sections of lining with corresponding facility for lining control. Additionally, there is foreseen at least one doubled block of power source, which provides current for at least two means of lining control of different sections of lining independently from each other. A double-sided element of communication is installed between the power source block and at least two means of lining control; this element performs galvanic separation between the power source block and means of lining control and/or groups of means of lining control. Also the element of communication forms a galvanic separated data transmitting channel which facilitates communicating between two means of lining control and/or groups of means of lining control. Notably, double-sided element of communication is in-built into the power source block or is flange mounted directly on the case of power source block.

EFFECT: simplification of design of face equipment.

4 cl, 2 dwg

FIELD: mining.

SUBSTANCE: extraction device of coal in longwall face of underground mine working consists of the following: many sections of powered support, which are installed near each other throughout the length of longwall face between gates; plough machine; chute and conveyor located in it with possibility of movement, which are located throughout the length of longwall face between extraction machine and support sections; several deflecting devices and control device. Plough machine is provided with possibility of being moved along the line of the mining face and equipped with rock detection sensor which is provided with possibility of transmitting radio data of the detected rock to the control device of the support by means of the transmitter installed on the plough and the radio receivers installed along the longwall face. Group of adjacent support sections and sections of the chute corresponds to each deflecting device. Deflecting device is connected to control unit of one of the support sections of the appropriate group, and depending on the data of the detected rock, it provides the possibility of lifting the chute sections of the appropriate group, which is accompanied with lowering of the tools of the plough machine, and lowering of the chute sections, which is accompanied with lifting of plough machine tools. Control device includes the following: bottomhole control unit located at the end of longwall face for control of functions of support sections in relation to unloading, transportation and bracing of the support; control units of sections, each of which is put into spatial and functional compliance with the appropriate support section for performing and further transmitting the commands from bottomhole control unit; and the bus connecting mainly in series the bottomhole control unit to control units of support sections. At that, rock sensor when moving beside each support section is provided with possibility of generating the measurement signal characterising the detected rock only for several, mainly not more than two measurement points. Measurement signals received at neighbouring measurement points are subject to analysis with a view to predominance of rock or coal. Depending on analysis results, there generated is deviation signal supplied to the common deflecting device common for all measurement points, and namely to the deflection of the chute sections, which causes the lifting of plough machine tools if analysis results show the predominance of rock at the analysed measurement points, and to deflection of the chute sections, which causes the lowering of the plough machine tools if the analysis results show coal predominance at the analysed measurement points.

EFFECT: possible quick correction of the plough machine position during the coal extraction, which causes the lifting and lowering of the plough.

9 cl, 2 dwg

FIELD: mining.

SUBSTANCE: in control method of drum actuating element equipped at least with one lever of drum actuating element each electric hydraulic section of the support is equipped with its own electric hydraulic control instrument. Control commands are entered for correction of lever position of drum actuating element from control instrument of support section. And they are supplied from there to control system of drum actuating element.

EFFECT: improving control efficiency of the cut by means of drum actuating element.

8 cl

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