• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A coal wining plough in a longwall working employs adjustable floor cutters mounted on curved carriers displaced in guideways on the body of the plough. Wedges abut on the upper ends of the carriers and are moved by hydraulic piston and cylinder units to set the position of the floor cutters and define the cutting level adopted by the plough. The units are operated with the aid of valves which respond to an electronic control device. Command signals from a remote control station are transmitted as by a radio to the plough to set up the electronic control device. Sensors on the plough provide electrical signals representing the position of the interface between the coal face and the floor and these signals are transmitted back to the control station. In a control sequence the plough runs along the seam and the sensor(s) provide signals relayed to the control station which also receives signals representing the distance moved by and/or the position of the plough. On a succeeding run the control station provides the control of the leading floor cutter in accordance with a control program.
    公开号:SU1713441A3
    申请号:SU894613636
    申请日:1989-03-14
    公开日:1992-02-15
    发明作者:Штайнкуль Бернд；Мертен Герхард；Расманн Кристоф；Маркарт Альфред
    申请人:Геверкшафт Эйзенхютте Вестфалия Гмбх (Фирма)；
    IPC主号:
    专利说明:

    The soil cutter is controlled by the control team or by radio commands in accordance with the data on the reservoir profile examined before.
    The control of the cutting level of the plow is carried out so that when measuring the plow along the clearing face, during which mining work can also be carried out immediately, the position of the mineral and rock formation is detected using the coal rock sensor. In combination with the results of measurements of the path traveled by the plow, the profile of the reservoir is determined, i.e., the passage of the boundary layer of the reservoir over the entire section of the plow passage. In this case, the measurement results supplied by the sensor are transmitted via the plow receiving and transmitting station to the control computer installed on the control panel. , At the drive end of the plow installation and on the control panel itself, respectively, there is a displacement sensor showing the corresponding position of the plow, which transmits the corresponding plow movement signals to the control computer, so that the last of the various signals of the coal-rock sensor and the sensor for measuring the path covered by the plow can determine the profile of the reservoir. Based on the profile of the reservoir during the subsequent working stroke of the plow, it is determined whether the control action or, respectively, the control program, according to which or which the cutter, by remote adjustment from the control panel, is moved to another position in height. At the same time, depending on the formation and course of the boundary layer of the mineral and rock formation, a more or less accurate approximation to the actual course of the boundary layer of the formation in only one plow or in several successive passes is achieved on the basis of the detected profile of the reservoir. For example, in highly irregular or soft soils, the straight horizon of the recumbent side can be cut immediately.
    During the measuring pass of the plow, at which the measurement results are received, the soil tools can remain in their established height position, for example, in their middle or neutral positions. In this working phase, there are no remotely controlled permutations of the plow soil cutters and, accordingly, no energy expenditure is required for the permutation.
    soil incisors. The method can be carried out at high plow rates with high economic efficiency and functional reliability and can be controlled by a control computer in such a way that it avoids pulsating and sharply changing control movements.
    The method can be carried out in such a way that when the plow is pre-passed (measuring passage), the measurement results received from the sensor are stored on the memory block located on the pillar as electrical signals and are called from the memory only when the plow approaches the control panel for radio transmission. This measure contributes to an increase in reliability when transmitting by radio in a clearing face and allows the use of relatively low-power receiving-transmitting devices.
    Accordingly, the control command system for controlling the soil cutter can also be entered as control programs in the electrical command unit when the plow is near the control panel. Through these measures, radio transmissions over long distances can be avoided.
    The method of adjusting the cutting level of the mining plow is implemented using a device for adjusting the cutting level of the mining plow, which is located directly on the plow 1. On the plow 1 guide 2, there is a casing 3, which at its ends is equipped with plow bearing holders 4 and 5, which consist for example, from hinged tool holders.
    The guide 2 of the plow 1 from the side of the downhole is hung on the bottomhole conveyor 6 (chain scraper conveyor) and inside has channels 7 and 8 for the chains, through which the plow chain connected to the hull 3 is passed through which the plow 1 during mining operations moves in both directions along the cleaning face.
    Under the holders 4 and 5, at each end of the plow 1, in the plane, almost perpendicular to the bedding, in the arcuate guide 9 of the pillar body 3 a turning segment 10 is installed, carrying at its lower end a group of tools with a soil cutter 11.
    The soil cutters 11 have blades angled to one another, with one blade cutting across the boundary layer and the other in angle.
    FIG. 1, line 12 shows the boundary layer between the coal seam and the rock.
    In their upper position, the soil cutters 11 can be installed opposite the plow body 3, which is accomplished by rotating their pivotal segments 10. At the corresponding position of the pivotal segments 10 (upper position of the pitting cutters), these segments rest on the adjustable end.
    Mining strugi of the type described are known. Often they are also made in the form of double plows, in which case there are two pill boxes connected to one another.
    In the ply, the adjustable stops for the pivotal segments 10 are formed by wedge elements 13, which are inserted into the longitudinal guides of the plow body 3 and using the hydraulic servo cylinder 14 supported by the hinge 15 on the plow body 3, can be moved linearly in the direction of the plow. The rotatable segments 10 of the supporting surfaces 16 abut against the wedge surfaces 17 of the wedge elements 13.
    FIG. 3 shows a separate rotary segment 10 with a soil cutter 11 and a wedge switch, whence it is seen that due to the linear movement of the wedge element 13 the rotary segment 10 is deflected in the arcuate guide 9, thereby the cutter 11 can be translated to different positions in height. In the embodiment (FIG. 3), the cutter 11 can be moved in several positions by means of the hydraulic servo cylinder 14. In this case, the middle position can correspond to the neutral position of the cutter 11, while one of the extreme positions corresponds to the Rise position, and a third to the Dive Plow position. The wedge element 13, which is supported by the rear surface on the pivoting element 18 of the plow body 3, can also be set in three positions with the help of servo-cylinder 14. In this case, the servo cylinder 14 consists of two separate hydraulic cylinders 19 and 20, which are interconnected by bodies. The rod 21 of the hydraulic cylinder 19 is in this case connected through the hinge 22 to the wedge element 13. The rod 23 of the hydraulic cylinder 20 through the hinge 15 (Fig. 1) abuts against the plow body 3.
    The servo-cylinders 14 of both soil incisors 11 are hydraulically connected to the source for supplying the working fluid through the control unit 24 (FIG. 3). On the hull 3 of the plow or in it is additionally placed a command unit 25 with a receiving and transmitting unit 26, as well as a source of
    fluid. The latter contains a hydropneumatic accumulator 27 and a hydraulic pump 28, which during operation of the plow communicates with the liquid cavity of the hydropneumatic accumulator
    27. The hydraulic pump 28 is set in motion by a wheel 29, which is rotatably mounted in the middle part of the plow body 3, so that during plow production it is in contact with the clearing face and can
    0 is rotated by this contact when the plow 1 is moved along the clearing face with the help of its chain drive. Depending on the direction of travel of the plow, the hydraulic pump 28, driven by the wheel 29, rotates in one direction or another. In all directions of rotation, it draws the working fluid from the plow tank 30 for the working fluid installed in the housing 3 through
    0, a check valve 31 and through a switching valve 32 supplies the working fluid to the hydraulic pressure line 33 to which the shut-off valve 34 is connected to the hydropneumatic accumulator 27. The pressure-limiting valve 35 is connected with the liquid cavity of the hydro-pneumatic accumulator 27, which can be opened manually if necessary the hydropneumoaccumulator 27 is discharged through the drain line 36, which is connected to the tank 30.
    In the branch line 37 between the pressure line 33 and the drain line 36 is included hydraulic
    5 valve 381, the control cavity of which, via control hydroline 39, is connected to the pressure line 33 behind the non-return valve 40 included in it. Hydraulic valve 38 is turned on hydraulically at
    0 some given pressure in the pressure line 33. The hydraulic pump 28 can supply the working fluid through the open valve 38 without pressure in the tank 30.
    A sensor 41 is associated with each of the soil cutters 11, which, as the plow passes through, examines the boundary layer 12 of the formation-rock. The sensors 41 (Fig. 1) are placed almost in the track of the soil cutters 11 behind their pivotal segments 10, on the plow body 3,
    0 whereby the spring elements 42 are installed opposite the inspected boundary layer 12. Otherwise, the sensors 41 do not differ in their design and principle of action from the known sensors of the type
    5 coal-rock. They examine the boundary layer 12 and, in the course of the plow operation, transmit the corresponding measurement results, which are used to set the soil cutters 11. In FIG. 3 schematically shows both sensors 41 tied to
    receiver unit 26 plow and electronic command unit 25.
    Hydropneumatic accumulator 27 (Fig. 1) is installed in a supine position with the corresponding valve 34 and valve 35 in a protected place in the body of the plow. The piston and piston cavities of both hydraulic cylinders 19 and 20 of the cylinder 14 may alternately hydraulically communicate with the drain line 36. The control unit 24 for each of the hydraulic cylinders 19 and 20 has two main hydraulic distributors 42 and 43 and two control hydraulic distributors 44 and 45 additional booster valves, which The shown embodiment is made in the form of three-way two-way control valves. The main hydraulic distributors 42 and 43 are turned on by supplying the working fluid to the cavities to control the movement of their spools through control lines 46 and 47. From the inlet side, the hydraulic distributors 42 and 43 are connected respectively to pressure line 33 and drain line 36, and from the outlet side through line 48 and 49, respectively, they are connected to the piston or rod cavities, respectively, of the hydraulic cylinders 19 and 20. The control valves 44 and 45 of the additional reinforcement are electromagnetic control valves. odes for moving their spools, which are incorporated and accordingly switched electric command unit 25. These valves also on the input side are respectively connected to the pressure line 33 and drain line 36. From the output side are coupled to control line 47 and 46 respectively.
    While simultaneously turning on the control valves 44 and 45 of the additional reinforcement, the associated control lines 46 and 47 are connected by a pressure line 33, so that these hydraulic control lines include the respective main valves 42 and 43, which are optionally connected a piston cavity (or rod cavity) with a pressure line 33, and a rod cavity (or piston cavity) of a hydraulic cylinder with a drain line 36. Separate hydraulic cylinders 19 and 20 can optionally be activated, o command block 25 either separately or together, i.e., for each installation position of the soil cutters 11, a separately activated servo cylinder is available. Through the control valves 44 and 45 can only pass small flows of working fluid for hydraulic activation of the main hydraulic distributors 42 and 43. Thus, their inclusive efforts are relatively small. Accordingly, the consumption of electric current for switching electromagnetic actuators of the control hydraulic distributors 44 and 45 cf) / is very small. This need for electricity is covered by a source of electric current, which is also installed in the plow body 3 and can be a structural component of blocks 25 and 26. This current source can also be powered by sensors 41, if optical-type measuring probes of a known type are used. In addition, this current source is powered by
    0 transceiver unit26.
    By rearranging the soil cutters 11, control of the cutting level of the mining plow can be achieved, so that in the case of uneven, for example, wavy,
    5 boundary layer 12, plow 1 can always maintain the required horizon and avoid undesirable diving and lifting movements. The soil cutters 11 can be controlled by means of the device described in such a way that with a single plow pass, when mining work is carried out, by means of a sensor 41 connected to the soil cutter located ahead in the course of the plow movement.
    5 to 11, the boundary layer 12 is examined. The electrical signals transmitted by the sensor 41 are transmitted by radio to the plow receiving and transmitting unit 26 to a control panel located in the lava end zone (not shown), where the control computer is installed, in the drive zone, i.e. on the plow control panel, it usually provides for a plow displacement sensor, with which it is possible to determine the location of the movement along the clearing ground. The plow displacement sensor generates electrical displacement signals, which are also fed to the control computer.
    0 According to the signals about the movements and the signals transmitted by radio from the sensor 41, the control computer determines the profile of the boundary layer 12 along the path of the plow (measuring stroke).
    5 During the subsequent mining passage of the plow from the central control panel, the Soil cutter 11 is controlled by transmitting control commands over the radio according to the parameters of the detected profile of the boundary layer 12. The panel
    The control unit contains the corresponding transmitting device, so that it transmits the necessary control commands. These commands, received by the receiving unit 26 of the plow 1, are sent to the command unit 25, which then switches on the control unit 24, i.e. its controlling g | distributors 44 and 45 are additional amplifiers, respectively, and thus through the servo cylinder 14, the soil cutter 11 is rearranged. According to the proposed method, it is not necessary rum working measured the passage of the plow by means of sensors 41. Typically only one measuring passageway conducted with bolschoy timeslot then passes within a few working plow plow output is achieved to the desired level of cut.
    According to the proposed method, the soil cutter 11 can be remotely controlled so that during the measuring passage of the plow, the electrical signals received from the sensor 41 about measurements are first remembered in the memory unit installed on the plow and only then are transmitted by the transmitting unit 26 to the control panel when the plow turns out to be near the control panel, i.e. the broadcast path becomes relatively short. In the same way, the control commands issued by the control panel for transposing the soil cutter 11 can also be sent as a closed control program through the receiving-transmitting unit 26 to the command unit 25 when the plow is near the control unit. The control program recorded in the memory block during the subsequent working pass of the plow is used to control the soil cutter 11 in accordance with the boundary layer 12 detected before this profile.
    The described permutation of the soil cutter 11 by means of moving linearly wedge elements 13 is characterized by simple and reliable structural means and small constructive dimensions. This device can also be used independently of the proposed method for adjusting the segments 10 and the soil cutters 11 mounted on them.
    权利要求:
    Claims (6)
    [1]
    1. The method of adjusting the cutting level of the mining plow, according to which, when the plow is moving along the lava from
    using the coal-rock sensor, determine the boundary layer of the mineral and rock formation, the coal-rock sensor readings are received by means of a receiving-transmitting device located on the plane and transmitted by radio to the control panel located at the end of the plow installation and depending on the location of the plow in the lava and sensor readings
    0 coal rock from the control panel sends radio control commands to the servo drive, which moves the soil cutter of the plow along the cutting height in the corresponding direction, which is different from that in order to increase reliability and control accuracy when working on formations with poor hypsometry , pre-make the measuring passage of the plow along the entire length
    0 of the lava, during which, using a coal-rock sensor and a sensor installed on the plow, to measure the distance traveled by the plow, the formation profile is determined throughout the plow's movement path, and the formation profile data obtained during the plow measurement pass is stored using the block located on the plow. memory and transmit by radio to the remote control when you are with a friend near the console
    0, while during the working movement of the plow, the radio transmission of the control command to the servo drive for moving the soil cutter of the plow is implemented as a control program, which is transmitted to the command unit located on the plow when the plow is located near the control panel, and the control commands the servo drive for moving the plow soil cutter is transmitted as the plow moves along the lava from the command unit, taking into account the formation profile determined during the plow measurement run.
    [2]
    2. Device for level control
    5 of cutting the mining plow, including at least one hydraulic servo cylinder, the output link of which is kinematically connected with the soil cutter mounted on the plow body in the vertical plane, the source for supplying the working fluid with the hydraulic pump, which is hydraulically connected to the tank, placed on the plow for the working fluid and the output is with
    5 pressure line, a control unit which is hydraulically connected to the working cavities of the hydraulic servo cylinder and pressure and drain lines mounted on the plow body with the possibility of rotation and interaction with the bottom of the wheel, which is kinematically connected to the hydraulic pump shaft, located on the plow transmitting a control command to a control unit, a receiving-transmitting unit for transmitting measurement results to the control unit and receiving control commands or control from the control unit A measuring sensor and an electrical current source, located on the soil surface, characterized in that, in order to increase the reliability and accuracy of control when operating on formations with unsupported hypsometry, it is equipped with a memory unit for storing the measurement results of the sensor and controllers programs, which is electrically connected with the receiving-transmitting unit 1m and the measuring sensor, and the measuring sensor is made in the form of a coal-rock sensor for determining the boundary layer is useful fossil and rock, while the control unit is made in the form of hydraulic control valves connected to the corresponding working cavity of the hydraulic servo cylinder with cavities for controlling the movement of their spools and control hydraulic valves with electromagnetic actuators for moving their spools, and the source for supplying the working fluid. hydropneumatic accumulator, the fluid cavity of which is hydraulically connected through controlled valves to the pressure and drain lines, and omagnitny drive Hydrodistributor each control electrically connected to the command unit and each control cavity Hydraulic distributor fluidly connected through the corresponding control on the pressure control valve and drain line in E.
    [3]
    3. The device according to claim 2, wherein it is equipped with a hydraulic valve for providing idling of the hydraulic pump with a control cavity, wherein the input of the hydraulic valve is connected via a hydraulic line to the pressure line, and the output through a hydraulic line - with a drain line, wherein the control cavity of the hydraulic valve is in communication with the pressure line via the control line.
    [4]
    4. Device on PP. 2 and 3, that is, so that the hydraulic servo-cylinder is made in the form of several servo-cylinders or one multistage
    the servo cylinder, and the soil cutter is installed with the possibility of fixation in several intermediate positions, while the magnitude of the maximum displacement of the output link of each servo cylinder or
    each stage of a multistage servo-cylinder corresponds to a certain intermediate position of the soil cutter, and the working cavities of each servo-cylinder or each stage of a multi-stage servo-cylinder are hydraulically connected via a corresponding valve to the pressure and drain lines.
    [5]
    5. The device according to claim 4, that is, that the hydraulic servo cylinder
    made in the form of two coaxial hydraulic cylinders whose bodies are interconnected, with the rod of one hydraulic cylinder being connected to the plow body, and the stem of the second
    the cylinder is kinematically connected with a soil cutter, wherein the rod and piston cavity of each cylinder are hydraulically connected through appropriate hydraulic distributors to the pressure and
    the drain lines, and the command unit is configured to transmit a control command separately to each electromagnetic actuator of each control valve or simultaneously to all electromagnetic actuators of the control valve.
    [6]
    6. The device according to paragraphs. 2-5, characterized in that the kinematic connection of the output link of the hydraulic servo cylinder
    with soil cutter made in the form of a segment with a supporting surface and a hydraulic servo-cylinder of a wedge element with a supporting surface connected to the output link, and the body of the plow is made
    with an arcuate guide for placing a segment, wherein the wedge element is mounted to move parallel to the longitudinal axis of the hydraulic servo cylinder and interact with its supporting surface with the supporting surface of the segment, and the soil cutter is fixed on the segment that is mounted with possibility of movement in the guides.
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    同族专利:
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    引用文献:
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    SU876997A1|1979-11-29|1981-10-30|Научно-производственное объединение по созданию и выпуску средств автоматизации горных машин "Автоматгормаш"|System for remote control of cutter-loader in coal bed|
    SU914761A1|1980-04-21|1982-03-23|Inst Gornogo Dela Imeni Skochi|Dynamic planer|
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    DE3509868C2|1984-03-24|1990-10-04|Nlw Foerdertechnik Gmbh, 4232 Xanten, De|
    DE3508058A1|1985-03-07|1986-09-11|Gewerkschaft Eisenhütte Westfalia GmbH, 4670 Lünen|Plough with adjustable parting tools or tool carriers|
    DE3634599A1|1986-10-10|1988-04-14|Eickhoff Geb|Method of controlling winning machines in underground use|ES2082714B1|1993-12-27|1998-04-01|E N Hulleras Del Norte S A|IMPROVEMENTS IN SCRAPERING MACHINES FOR MINING OPERATIONS.|
    US6079506A|1998-04-27|2000-06-27|Digital Control Incorporated|Boring tool control using remote locator|
    CN103696768A|2013-07-09|2014-04-02|中煤张家口煤矿机械有限责任公司|Coal planer operation control system|
    AU2015209479A1|2014-01-21|2016-08-04|Joy Global Underground Mining Llc|Fluid tank balancing system for mining machine|
    CN104847348B|2015-05-23|2017-09-05|江西华核天宇检测技术发展有限公司|Mine intelligent remote control wheel type rock drill|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3810100A|DE3810100A1|1988-03-25|1988-03-25|METHOD AND DEVICE FOR CONTROLLING GROUND CHISES IN A MINING PLANE|
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