EP0943051B1 - Einrichtung zum dämpfen von schwingungen von teilschnittschrämmaschinen - Google Patents

Einrichtung zum dämpfen von schwingungen von teilschnittschrämmaschinen Download PDF

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Publication number
EP0943051B1
EP0943051B1 EP97945654A EP97945654A EP0943051B1 EP 0943051 B1 EP0943051 B1 EP 0943051B1 EP 97945654 A EP97945654 A EP 97945654A EP 97945654 A EP97945654 A EP 97945654A EP 0943051 B1 EP0943051 B1 EP 0943051B1
Authority
EP
European Patent Office
Prior art keywords
arm
hydraulic
cantilever arm
pivot actuator
vibrations
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 - Lifetime
Application number
EP97945654A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0943051A1 (de
Inventor
Peter Kogler
Gottfried Siebenhofer
Nikolaus Sifferlinger
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.)
Sandvik Mining and Construction GmbH
Original Assignee
Voest Alpine Bergtechnik GmbH
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 Voest Alpine Bergtechnik GmbH filed Critical Voest Alpine Bergtechnik GmbH
Publication of EP0943051A1 publication Critical patent/EP0943051A1/de
Application granted granted Critical
Publication of EP0943051B1 publication Critical patent/EP0943051B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
    • E21C31/12—Component parts
    • 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
    • E21C35/24—Remote control specially adapted for machines for slitting or completely freeing the mineral

Definitions

  • the invention relates to a device for damping Vibrations from part-cutting machines with one by two Axles swiveling cantilever arm, on which cutting tools are rotatably mounted, the cantilever arm with one Pivot drive for each pivot axis is connected, at least a hydraulic swivel drive via a valve arrangement can be acted upon with fluid, fluid depending on Measured values from sensors are supplied to the drive and at least a sensor is connected to the extension arm.
  • the cutting tools are each according to the speed of advance and the speed of rotation of the Cutter heads are exposed to high, shock loads, and it AT-PS 377 056 can already be seen, for example, vibration sensors to be arranged as a measurement for the tool load, over which subsequently the swivel speed and / or the speed of rotation of the tools for the purpose the reduction in the tool load can be influenced.
  • a vibration sensor was used in this known design provided whose signals via control electronics with the swivel drive of the cutter arm, and in particular the controllable valves of a hydraulic swivel drive, are connected. With excessive vibrations, the Cutting performance of the cutting machine reduced.
  • a device has already become known from DE-PS 34 27 962 with which the cantilever arm device for extraction and jacking machines could be braced hydraulically.
  • This training is also based on the consideration that Partial cutting machines, especially roller cutting machines, strong vibrations when moving into hard mineral layers are subject.
  • the shocks and vibrations are about the scraping tools that intervene in the material transferred to the cantilever arm, such vibrations due to the elasticity of the actuator's pressure cylinder for the cantilever arm to significant vibrations of the Can give a scanty occasion. If to make matters worse here resonance occurs in the system, such vibrations can be destructive Have an effect.
  • the DE-PS 34 27 962 to be removed Measures the pressure in the actuating cylinders is now increased, but thereby the underlying problem of the elasticity of the Printing cylinder is insufficiently solved.
  • the invention now aims to be simple and possibly also to propose a retrofit facility with which an effective damping of vibrations from cutting machines succeed.
  • the device according to the invention should get by with a minimum of additional parts and can be compact, and also efficiency and the performance of the swivel drive for the cantilever arm so little influence as possible.
  • the device essentially consists in that with the extension arm or the hydraulic swivel drive at least one sensor for detecting vibrations, Acceleration, load and / or position of the arm connected is whose signal lines are connected to a control device are what control device with a hydraulic Circuit for one-sided loading of the part-turn actuator to compensate for the registered evasive movement of the Cantilever arm is connected, its position during the feed of the cutting tools kept essentially constant is.
  • cutting with a partial cutting machine is usually after the burglary has been cut in a way that one of the two rotary actuators locked in its position is, whereas the feed movement via the second drive is effected.
  • the compensatory control pulses thus cause one cyclical readjustment movement to counteract evasive movements, so that the cutting arm is kept quieter overall and vibrations can be dampened.
  • a short time high pressure level must be made available the training is particularly advantageous in this regard further developed that in addition to the hydraulic pump for the hydraulic swivel drive arranged a fluid pressure accumulator which is for the compensation of the evasive movement of the arm each with a work area of the rotary actuator in connection is settable. This can be done in the short term from a fluid pressure accumulator required pressure level available for the compensation be put without additional overlays and Effects on the pump of the hydraulic drive comes. Out the pressure accumulator can make pressure corrections at very short notice be provided so that the hydraulic pump which is required for the swivel drive from such load peaks is decoupled.
  • valve arrangement which is used for the swivel drive of the cantilever arm is used directly as a valve arrangement be used for the desired compensation, whereby results in a particularly simple construction.
  • FIG. 1 shows a schematic side view of a part cutting machine
  • Fig.2 is a circuit diagram for the hydraulic Circuit.
  • Fig. 1, 1 is a partial cutting machine, which is movable on a crawler track 2.
  • a cantilever arm 3 is essentially on a swivel mechanism 4 horizontal axis 5 pivotally mounted in the height direction.
  • the swivel drive 6 for this shift around Swivel axis 5 of at least one hydraulic cylinder piston unit formed, which hinged on the cutter arm 3 is.
  • the cutter arm 3 carries rotary cutter heads 7, which in the sense of the double arrow 8 in the vertical direction are pivotable.
  • the swivel mechanism is used for the feed movement 4 pivoted about the substantially vertical pivot axis 9.
  • a loading device 11 is also articulated on the machine frame 10.
  • a discharge conveyor 12 is schematic shown.
  • a sensor 13 is provided on the cutting arm.
  • the Signals from sensor 13 or sensor 14 are transmitted via a Signal line 15 fed to a control device 16.
  • the Control device is with a valve arrangement for the hydraulic Swivel drive 6 connected, as shown in Figure 2 in more detail is illustrated.
  • Fig. 2 is a valve assembly for actuating the actuator 6 is shown schematically.
  • the hydraulic slide 17 For swiveling the cutting arm 3 in the height direction in the direction of the double arrow 8 can the hydraulic slide 17 are brought into the respective position, which enables an upward or downward swiveling becomes.
  • Fluid is hereby removed from a tank 18 via a pump 19 the valve arrangement and thus depending on the position of the slide valve one work area each of the hydraulic cylinder piston units the swivel drive 6 provided.
  • the Line to these vertical swivel cylinders are corresponding Check valves or control valves turned on, which is schematic are designated by 20.
  • the Cylinder spaces 21 or 22 acted upon for pivoting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Prevention Devices (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Operation Control Of Excavators (AREA)
  • Machine Tool Units (AREA)
  • Manipulator (AREA)
  • Turning (AREA)
EP97945654A 1996-12-04 1997-11-20 Einrichtung zum dämpfen von schwingungen von teilschnittschrämmaschinen Expired - Lifetime EP0943051B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0211996A AT407071B (de) 1996-12-04 1996-12-04 Einrichtung zum dämpfen von schwingungen von teilschnittschrämmaschinen
AT211996 1996-12-04
PCT/AT1997/000255 WO1998025007A1 (de) 1996-12-04 1997-11-20 Einrichtung zum dämpfen von schwingungen von teilschnittschrämmaschinen

Publications (2)

Publication Number Publication Date
EP0943051A1 EP0943051A1 (de) 1999-09-22
EP0943051B1 true EP0943051B1 (de) 2001-01-17

Family

ID=3528178

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97945654A Expired - Lifetime EP0943051B1 (de) 1996-12-04 1997-11-20 Einrichtung zum dämpfen von schwingungen von teilschnittschrämmaschinen

Country Status (7)

Country Link
EP (1) EP0943051B1 (es)
AT (2) AT407071B (es)
AU (1) AU731456B2 (es)
DE (1) DE59702937D1 (es)
ES (1) ES2154475T3 (es)
WO (1) WO1998025007A1 (es)
ZA (1) ZA9710825B (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101375017B (zh) * 2006-01-19 2013-03-27 桑德威克采矿和建筑有限责任公司 用于调节掘进机或采掘机的驱动器的方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT408019B (de) * 1998-11-18 2001-08-27 Tamrock Voest Alpine Bergtech Einrichtung zum erfassen und kompensieren von schwingungen von teilschnittschrämmaschinen
AT408018B (de) * 1998-11-18 2001-08-27 Tamrock Voest Alpine Bergtech Verfahren zum stabilisieren von schneidauslegern von teilschnittschrämmaschinen
GB0300769D0 (en) * 2003-01-14 2003-02-12 Swift Jonathan R Remote controlled or fully automatic mining machine
CN112050732B (zh) * 2020-08-21 2022-03-15 西安科技大学 一种悬臂式掘进机空间位姿自动检测方法及系统

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2053317B (en) * 1979-06-22 1982-12-01 Coal Industry Patents Ltd Excavating machines for excavating rock or mineral
AT377056B (de) * 1982-12-31 1985-02-11 Voest Alpine Ag Einrichtung zum schutz von teilschnitt -schraemmaschinen
JPS60181487A (ja) * 1984-02-24 1985-09-17 財団法人石炭技術研究所 負荷制御装置を有するダブルレンジング・ドラムカツタ
DE3427962A1 (de) 1984-07-28 1986-01-30 Bergwerksverband Gmbh, 4300 Essen Tragarmstellvorrichtung fuer bergwerksmaschinen, insbesondere fuer schraemwalzenlader und teilschnittvortriebsmaschinen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101375017B (zh) * 2006-01-19 2013-03-27 桑德威克采矿和建筑有限责任公司 用于调节掘进机或采掘机的驱动器的方法

Also Published As

Publication number Publication date
ATA211996A (de) 2000-04-15
WO1998025007A1 (de) 1998-06-11
ZA9710825B (en) 1998-06-12
AT407071B (de) 2000-12-27
AU731456B2 (en) 2001-03-29
EP0943051A1 (de) 1999-09-22
ATE198781T1 (de) 2001-02-15
AU5109798A (en) 1998-06-29
DE59702937D1 (de) 2001-02-22
ES2154475T3 (es) 2001-04-01

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