EP0028593B1 - Einrichtung zur Verhinderung einer Kollision zwischen Schrämarm und Laderampe einer Schrämmaschine - Google Patents

Einrichtung zur Verhinderung einer Kollision zwischen Schrämarm und Laderampe einer Schrämmaschine Download PDF

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Publication number
EP0028593B1
EP0028593B1 EP80890126A EP80890126A EP0028593B1 EP 0028593 B1 EP0028593 B1 EP 0028593B1 EP 80890126 A EP80890126 A EP 80890126A EP 80890126 A EP80890126 A EP 80890126A EP 0028593 B1 EP0028593 B1 EP 0028593B1
Authority
EP
European Patent Office
Prior art keywords
piston
cutting
loading ramp
boom
hydraulic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80890126A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0028593A1 (de
Inventor
Erich Dröscher
Hans Peter Pfundner
Herwig Wrulich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voestalpine AG
Original Assignee
Voestalpine AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voestalpine AG filed Critical Voestalpine AG
Publication of EP0028593A1 publication Critical patent/EP0028593A1/de
Application granted granted Critical
Publication of EP0028593B1 publication Critical patent/EP0028593B1/de
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/20—General features of equipment for removal of chippings, e.g. for loading on conveyor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C27/00—Machines which completely free the mineral from the seam
    • E21C27/20—Mineral freed by means not involving slitting
    • E21C27/24—Mineral freed by means not involving slitting by milling means acting on the full working face, i.e. the rotary axis of the tool carrier being substantially parallel to the working face
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/04—Safety devices

Definitions

  • the invention relates to a device for preventing a collision between a part of the cutting arm and a part of the loading ramp in a cutting machine with a at least one cutting head-supporting cutting arm pivotable about at least one horizontal axis and a lifting and lowering loading ramp arranged below the cutting arm.
  • the cutting arm is usually pivoted on all sides and the loading ramp is usually pivoted on the frame of the cutting machine about a horizontal axis. If the cutting arm is pivoted downwards and / or the loading ramp is raised, there is a risk of a collision between the cutting arm and the loading ramp.
  • the loading ramp usually has movable loading arms which continuously push the cut material on the loading ramp upwards to a conveying device.
  • the invention has for its object to provide a device by means of which collisions between the cutter arm and loading ramp are avoided without the loading area of the loading ramp being impaired and which in a simple manner and with the avoidance of stops on the cutter arm and on the loading ramp to the given conditions can be customized.
  • the invention consists essentially in the fact that for the cutting arm there is provided a transmitter device registering the position thereof relative to the cutting machine and for the loading ramp a transmitter device registering the position thereof relative to the cutting machine and that the two transmitter devices are connected to a common receiver device, which in Depending on a combination of the signals of the two transmitter devices, a control element which interrupts the downward movement of the cutting arm and the upward movement of the loading ramp controls.
  • the device according to the invention responds to a dangerous approach of the cutting arm to the loading ramp, regardless of whether this approach by lowering the Low-cutting or by lifting the loading ramp or by both movements.
  • the transmitter devices are formed by hydraulic cylinder-piston units, one part of which is connected to part of the cutting machine and the other part of which engages the loading ramp or the cutting arm, at least in the lower region of the pivoting thereof, the working spaces of the two cylinder-piston units, which become smaller during the downward movement of the cutting arm or the upward movement of the loading ramp, are connected to the working space of a hydraulic cylinder-piston unit forming the receiver device, with the piston of which the control element for the lower part Refraction of the movements of the cutter arm and loading ramp is connected.
  • the receiver device becomes dependent on the sum of the mutually directed movements of the cutting arm and loading ramp controlled, and this sum of the movements directed towards each other is decisive for the respective collision position. It is only necessary that the quantity of hydraulic medium pressed into this common working space corresponds to the path of the corresponding part, cutting arm and loading ramp. With the same kinematics of the points of attack of the two cylinder-piston units, the piston cross sections can be the same. However, the piston cross section and the articulation kinematics can also be different when registering the movements of the cutting arm and the loading ramp. It is only relevant that the quantities of the hydraulic medium pressed into the working space of the piston of the receiver device during the movement of these two parts are proportional to the movement.
  • the working spaces of the hydraulic cylinder-piston units and of the cylinder-piston unit forming the receiver device are filled with an empirically determined amount of a hydraulic medium, in particular grease.
  • a hydraulic medium in particular grease.
  • the use of grease as a hydraulic medium has the advantage of simplifying the seals.
  • the extent of the amount of hydraulic medium filled can be set empirically in a simple manner in such a way that the cutting arm and loading ramp are brought into a position just before the collision and then the relevant working spaces are filled with the hydraulic medium.
  • the swiveling mechanism of the cutting arm can be increased. This increase can be up to 800 mm or more. Due to the extent of the filling, this increase can be taken into account in a simple manner, so that the setting of the device preventing the collision is extremely simple when the swivel mechanism is increased.
  • the arrangement is preferably such that the transmitter device or the cylinder-piston unit assigned to the cutting arm is attached on the one hand to a part of the cutting machine and on the other hand only engages non-positively with a part of the cutting arm by a stop, the stop only taking effect.
  • the cutter arm is in the lower half of the vertical swivel range.
  • the cutting arm makes a relatively large pivoting movement in the vertical direction and only in the lower part of this pivoting area is there a risk of a collision.
  • the loading ramp on the other hand, carries out a relatively small swiveling movement in the vertical direction and there is a risk of collision in all swiveling positions of the loading ramp.
  • the pivoting path controlled by the encoder device can be kept approximately the same as the pivoting path of the loading ramp, so that these pivoting paths can be easily summed up.
  • the switching element is preferably formed by a piston slide with control recesses which simultaneously connect the hydraulic lines which cause the lowering of the cutting arm and the lifting of the loading ramp to a return line.
  • the piston slide is expediently connected to the hydraulic piston of the receiver device coaxially or consists of one piece with it.
  • Fig. 1 shows a cutting machine.
  • Fig. 2 shows the arrangement of the hydraulic cylinder-piston units forming the transmitter devices and the piston forming the receiver device.
  • Fig. 3 shows the hydraulic piston forming the receiver device with the control slide.
  • the cutting arm 1 is articulated on the cutting machine 3 so that it can be raised and lowered about the horizontal axis 2.
  • the loading ramp 4 '5 pivotably articulated about a horizontal axis at the cutting machine.
  • the cutter arm is pivoted about the axis 2 by means of a cylinder-piston unit 6, which is articulated at 7 on the cutter arm 1. Furthermore, the cutting arm 1 can be pivoted laterally about a vertical axis 8.
  • An encoder device 11 formed by a hydraulic cylinder-piston unit is assigned to the cutting arm, and an encoder device 12 formed by a hydraulic cylinder-piston unit is assigned to the loading ramp. These transmitter devices are shown on a larger scale in FIG. 2.
  • the transmitter device 11 consists of a cylinder-piston unit, the cylinder of which is designated by '1'3 and the piston of which is designated by 14.
  • the cylinder 13 is fixed to a part connected to the cutting machine, as indicated by 15.
  • the cutting arm 1 has a stop 1 ' 6, on which the piston rod 17 of the piston 14 engages.
  • the piston 14 is pressed in the direction of the stop 16 by a spring 18.
  • the path of the piston 14 is limited so that the piston rod 17 only in the bottom Ren part of the vertical swivel stroke of the cutting arm reaches the stop 16.
  • the hydraulic cylinder 9, which is articulated at 10 on the loading ramp 4, is fixed on the cutting machine.
  • the cylinder 19 of the cylinder-piston unit forming the transmitter device 12 is fixed on the cylinder 9 and thus also on the cutting machine itself.
  • the piston rod 20 of the cylinder-piston unit 12 is firmly connected to the eye 21 of the piston rod 22 of the cylinder of the cylinder-piston unit 9 acting on the loading ramp by means of a part 23 welded to this eye 21. No spring loading is therefore required here.
  • the piston chamber 24 of the cylinder-piston unit 11 shrinks and presses hydraulic medium, for example grease, via a line 25, '26 into the working chamber 27 of a cylinder-piston unit 28 which forms the receiver device
  • hydraulic medium for example grease
  • the working space 29 of the piston 21 of the cylinder-piston unit 12 is reduced, which represents the transmitter device assigned to the loading ramp.
  • the hydraulic medium is also pressed via the line 30, 26 into the working space 27 of the cylinder-piston unit forming the receiver device.
  • Hydraulic medium is thus pressed into the working space 27 when the cutter arm 1 is lowered and the loading ramp 4 is raised, and the piston 31 of the cylinder-piston unit 28 forming the receiver device is pressed to the right by the sum of the volumes of these displaced hydraulic media.
  • the movement of the piston 31 to the right is thus shifted to the right both as a function of the lowering movement of the cutting arm and as a function of the upward movement of the loading ramp and when the sum of the volumes of these media displaced from the cylinder-piston units 11 and 12 reached a dimension at which the cutting arm and loading ramp approach each other to a dangerous extent, the piston 31 interrupts the downward movement of the cutting arm and the upward movement of the loading ramp.
  • the relevant arrangement is shown in Fig. 3.
  • the piston 31 is pressed to the left by a spring 32.
  • the line 26 opens into the working space 27 of this piston via a connection 33.
  • a control slide 34 is connected to the piston 31 and is displaceable in a slide mirror 35.
  • the control opening 36 is connected to the hydraulic line which causes the cutting arm 1 to be lowered.
  • the control opening 37 is connected to the hydraulic line which causes the loading ramp 4 to be raised.
  • the control opening 38 is connected to a return.
  • the control slide 34 has control grooves 39 and 40, which are connected via radial bores 41 and 42 to a central bore 43 of the control slide 34.
  • control recesses 39, 40 open the control recesses 36 and 37, these control recesses pass through the control grooves 39, 40, the bores 41 and 42 and the central bore 43 in connection with the control recess 38.
  • Hydraulic lines causing the loading ramp are connected to the return flow via the control recess 38 and the lowering movement of the cutting arm and at the same time also the lifting movement of the loading ramp is interrupted, so that a collision is avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Manipulator (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Earth Drilling (AREA)
EP80890126A 1979-11-05 1980-10-24 Einrichtung zur Verhinderung einer Kollision zwischen Schrämarm und Laderampe einer Schrämmaschine Expired EP0028593B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0709779A AT366773B (de) 1979-11-05 1979-11-05 Einrichtung zur verhinderung einer kollision zwischen schraemarm und laderampe einer schraemmaschine
AT7097/79 1979-11-05

Publications (2)

Publication Number Publication Date
EP0028593A1 EP0028593A1 (de) 1981-05-13
EP0028593B1 true EP0028593B1 (de) 1983-05-18

Family

ID=3592685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80890126A Expired EP0028593B1 (de) 1979-11-05 1980-10-24 Einrichtung zur Verhinderung einer Kollision zwischen Schrämarm und Laderampe einer Schrämmaschine

Country Status (17)

Country Link
US (1) US4351564A (forum.php)
EP (1) EP0028593B1 (forum.php)
JP (1) JPS5681796A (forum.php)
AT (1) AT366773B (forum.php)
AU (1) AU537334B2 (forum.php)
BR (1) BR8007109A (forum.php)
CA (1) CA1146181A (forum.php)
CS (1) CS238369B2 (forum.php)
DE (1) DE3063362D1 (forum.php)
ES (1) ES496371A0 (forum.php)
IN (1) IN154086B (forum.php)
MA (1) MA18986A1 (forum.php)
MX (1) MX150725A (forum.php)
NZ (1) NZ195347A (forum.php)
PL (1) PL129211B1 (forum.php)
SU (1) SU1213989A3 (forum.php)
ZA (1) ZA806533B (forum.php)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3434365A1 (de) * 1984-09-19 1986-03-20 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Einrichtung zur verhinderung einer kollision zwischen schneidarm und ladeschaufel bei einer fraeslademaschine
AT384075B (de) * 1985-11-04 1987-09-25 Voest Alpine Ag Einrichtung zum schutz der ladeeinrichtung und/oder des schraemarmes einer schraemmaschine vor kollision
AT383647B (de) * 1985-11-08 1987-07-27 Voest Alpine Ag Einrichtung zum verhindern der kollision einer laderampe einer schraemmaschine mit einem schwenkarm oder loesewerkzeug derselben
US4858347A (en) * 1988-04-25 1989-08-22 R. A. Hanson Company, Inc. Continuous excavating apparatus and methods
RU2415264C1 (ru) * 2009-11-19 2011-03-27 Государственное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" Комбайн очистной
CN101963059A (zh) * 2010-09-20 2011-02-02 沈阳矿山机械有限公司 一种掘进机切割头与铲板防干涉装置
CN102839975A (zh) * 2011-06-23 2012-12-26 三一重型装备有限公司 一种硬岩掘进机
CN105443128A (zh) * 2014-08-25 2016-03-30 洛阳金马电气科技有限公司 一种悬臂式掘进机主铲板
US20180179892A1 (en) * 2016-12-22 2018-06-28 Caterpillar Global Mining Europe Gmbh Collision Avoidance Control Method and System

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3282627A (en) * 1963-12-26 1966-11-01 Goodman Mfg Co Hydraulic tilt limiting control for continuous miner
FR1528673A (fr) * 1967-03-09 1968-06-14 Eickhoff Geb Perceuse de galeries utilisable notamment dans les mines
DE2458514C3 (de) * 1974-12-11 1978-12-07 Gebr. Eickhoff, Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum Vortriebsmaschine mit einem an einem allseitig schwenkbaren Tragarm gelagerten Lösewerkzeug und Verfahren zu ihrem Betrieb
AT340350B (de) * 1975-09-02 1977-12-12 Voest Ag Schrammaschine
AT342537B (de) * 1976-05-13 1978-04-10 Voest Ag Schrammaschine

Also Published As

Publication number Publication date
MA18986A1 (fr) 1981-07-01
ZA806533B (en) 1981-10-28
SU1213989A3 (ru) 1986-02-23
ES8201259A1 (es) 1981-12-01
CS238369B2 (en) 1985-11-13
DE3063362D1 (en) 1983-07-07
PL227638A1 (forum.php) 1981-08-21
EP0028593A1 (de) 1981-05-13
US4351564A (en) 1982-09-28
IN154086B (forum.php) 1984-09-15
ES496371A0 (es) 1981-12-01
ATA709779A (de) 1981-09-15
PL129211B1 (en) 1984-04-30
NZ195347A (en) 1984-08-24
CA1146181A (en) 1983-05-10
BR8007109A (pt) 1981-05-05
AU6362980A (en) 1981-05-14
JPS5681796A (en) 1981-07-04
MX150725A (es) 1984-07-05
AT366773B (de) 1982-05-10
AU537334B2 (en) 1984-06-21

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