EP0943051A1 - Einrichtung zum dämpfen von schwingungen von teilschnittschrämmaschinen - Google Patents
Einrichtung zum dämpfen von schwingungen von teilschnittschrämmaschinenInfo
- Publication number
- EP0943051A1 EP0943051A1 EP97945654A EP97945654A EP0943051A1 EP 0943051 A1 EP0943051 A1 EP 0943051A1 EP 97945654 A EP97945654 A EP 97945654A EP 97945654 A EP97945654 A EP 97945654A EP 0943051 A1 EP0943051 A1 EP 0943051A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- arm
- cutting
- hydraulic
- 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.)
- Granted
Links
- 238000013016 damping Methods 0.000 title claims abstract description 6
- 239000012530 fluid Substances 0.000 claims abstract description 11
- 230000001133 acceleration Effects 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 230000001447 compensatory effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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 of part-cutting machines with a cantilever arm which can be pivoted about two axes, on which cutting tools are rotatably mounted, the cantilever arm being connected to a hydraulic actuator which can be acted upon by fluid via a valve arrangement, fluid in Depending on the measured values from sensors, the drive is fed.
- the cutting tools When hard material is removed, the cutting tools are exposed to high, shock-like loads depending on the speed of advance and the speed of rotation of the cutting heads, and it can already be seen from AT-PS 377 056, for example, to arrange vibration sensors as a measured variable for the tool load, which are subsequently used the swiveling speed and / or the speed of rotation of the tools can be influenced for the purpose of reducing the tool load.
- a vibration sensor was provided in this known design, the signals of which are connected via control electronics to the swivel drive of the cutting arm, and in particular the controllable valves of a hydraulic swivel drive. In the event of excessive vibrations, the cutting performance of the cutting machine was reduced.
- the aim of the invention is now to propose a simple and possibly also retrofitted device with which an effective damping of vibrations from part-cutting machines can be achieved.
- the device according to the invention should manage with a minimum of additional parts and should be compact, and furthermore should influence the efficiency and the performance of the swivel drive for the extension arm as little as possible.
- the device according to the invention essentially consists in that at least one sensor for detecting vibrations, acceleration, loading and / or position of the arm is connected to the cantilever arm or the hydraulic actuator, the signal lines of which are connected to a control device, which control device is connected to a hydraulic circuit for unilaterally acting on that actuator to compensate for the registered evasive movement of the cantilever arm, the position of which is kept essentially constant during the advance of the cutting tools.
- the cut is usually made after the break-in in such a way that one of the two swivel drives is locked in its position, whereas the feed movement is effected via the second drive.
- the vertical swivel drive When cutting in the horizontal direction, the vertical swivel drive is thus fixed in the desired position, the propulsion being effected by swiveling the arm horizontally. Because the measurement signals of the sensor are now made available to a control device which is to act on the drive which is to be held in its respectively selected position, impermissible load peaks can be eliminated. It is thus according to the invention Only one working area of the actuator to be kept in a constant position, for example the vertical actuator, is acted upon when an evasive movement is registered, so that vibrations can also be compensated for, without this affecting the cutting performance. The control can be fine-tuned to the registered direction of the higher load.
- the compensatory control impulses thus cause a cyclical readjustment movement in order to counteract evasive movements, so that the cutting arm as a whole can be kept quieter and vibrations can be dampened. Since a certain high pressure level must be made available for such compensatory loading of a working space of an actuating cylinder for a short time, the training is developed in a particularly advantageous manner in such a way that, in addition to the hydraulic pump for the hydraulic actuator, a fluid pressure accumulator is arranged, which is used to compensate for the evasive movement of the arm can be placed in connection with a working space of the actuator.
- the pressure level required for the compensation can be made available at short notice from a fluid pressure accumulator, without additional superimposition and repercussions on the pump of the hydraulic drive. Pressure corrections can be made available from the pressure accumulator at very short notice, so that the hydraulic pump, which is required for the actuator, is decoupled from such load peaks.
- valve arrangement which is used for the swivel drive or actuator of the cantilever arm can also be used directly as a valve arrangement for the desired compensation, which results in a particularly simple construction.
- Fig.l show a schematic side view of a part cutting machine
- Fig.2 is a circuit diagram for the hydraulic circuit.
- Fig.l 1 is a partial cutting machine, which can be moved on a crawler track 2.
- a cantilever arm 3 is mounted on a swivel mechanism 4 so as to be pivotable in the vertical direction about an essentially horizontal axis 5.
- the swivel drive for this displacement about the swivel axis 5 is designated 6 and is formed by a hydraulic cylinder piston unit which is hinged to the cutting arm 3.
- the cutting arm 3 carries rotating cutting heads 7 which can be pivoted in the vertical direction in the direction of the double arrow 8.
- the swivel mechanism 4 is swiveled about the essentially vertical swivel axis 9.
- a loading device 11 is also articulated on the machine frame 10.
- a discharge conveyor 12 is shown schematically.
- a sensor 13 is provided on the cutting arm.
- a further sensor 14 can be arranged on the hydraulic actuator 6 or in the swivel axis 5, with which vibrations, accelerations, loads and / or the position of the cutting arm or cantilever arm 3 are detected.
- the signals from the sensor 13 or the sensor 14 are fed to a control device 16 via a signal line 15.
- the control device is connected to a valve arrangement for the hydraulic actuators 6, as is illustrated in more detail in FIG.
- a valve arrangement for actuating the actuator 6 is shown schematically in FIG.
- the hydraulic slide 17 can be brought into the respective position which enables pivoting upwards or downwards. Fluid is made available from a tank 18 via a pump 19 of the valve arrangement and thus, depending on the position of the slide valve, to a working space of the hydraulic cylinder piston units 6.
- Corresponding check valves or control valves, which are denoted schematically by 20, are switched into the line to these vertical swivel cylinders.
- the cylinder spaces 21 or 22 are acted upon for pivoting.
- the lines between the pump 19 and the cylinder spaces 21 and 22 are separated and blocked, so that the selected vertical position of the cantilever arm 3 for pivoting the cutting arm 3 in a substantially horizontal direction is fixed. In this position, depending on the nature of the rock or the operating conditions, more or less force can be applied to the blocked working spaces 21. 22 of the hydraulic cylinder-piston units 6 take effect, which means that vibration states cannot be excluded due to the compressibility of the fluid. If such undesired operating states are now reported back by the sensors 13 or 14 of the control device 16, the additional switch unit 23 is activated, with fluid being pressed from one pressure accumulator 24 into one of the two cylinder spaces 21 or 22, respectively, in order to counteract these reaction forces .
- the opposite working space 21 or 22 is thus connected to the pressure accumulator 24 in order to counteract vibrations and to hold the cutting arm 3 securely in its selected vertical position.
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)
- Turning (AREA)
- Manipulator (AREA)
- Operation Control Of Excavators (AREA)
- Machine Tool Units (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT211996 | 1996-12-04 | ||
AT0211996A AT407071B (de) | 1996-12-04 | 1996-12-04 | Einrichtung zum dämpfen von schwingungen von teilschnittschrämmaschinen |
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 true EP0943051A1 (de) | 1999-09-22 |
EP0943051B1 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 (de) |
AT (2) | AT407071B (de) |
AU (1) | AU731456B2 (de) |
DE (1) | DE59702937D1 (de) |
ES (1) | ES2154475T3 (de) |
WO (1) | WO1998025007A1 (de) |
ZA (1) | ZA9710825B (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT408018B (de) * | 1998-11-18 | 2001-08-27 | Tamrock Voest Alpine Bergtech | Verfahren zum stabilisieren von schneidauslegern von teilschnittschrämmaschinen |
AT408019B (de) * | 1998-11-18 | 2001-08-27 | Tamrock Voest Alpine Bergtech | Einrichtung zum erfassen und kompensieren von schwingungen von teilschnittschrämmaschinen |
GB0300769D0 (en) * | 2003-01-14 | 2003-02-12 | Swift Jonathan R | Remote controlled or fully automatic mining machine |
AT503378B1 (de) * | 2006-01-19 | 2008-09-15 | Voest Alpine Bergtechnik | Verfahren zum regeln des antriebs einer vortriebs- oder gewinnungsmaschine |
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)
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 |
-
1996
- 1996-12-04 AT AT0211996A patent/AT407071B/de not_active IP Right Cessation
-
1997
- 1997-11-20 DE DE59702937T patent/DE59702937D1/de not_active Expired - Lifetime
- 1997-11-20 AU AU51097/98A patent/AU731456B2/en not_active Ceased
- 1997-11-20 AT AT97945654T patent/ATE198781T1/de not_active IP Right Cessation
- 1997-11-20 WO PCT/AT1997/000255 patent/WO1998025007A1/de active IP Right Grant
- 1997-11-20 ES ES97945654T patent/ES2154475T3/es not_active Expired - Lifetime
- 1997-11-20 EP EP97945654A patent/EP0943051B1/de not_active Expired - Lifetime
- 1997-12-02 ZA ZA9710825A patent/ZA9710825B/xx unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9825007A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE198781T1 (de) | 2001-02-15 |
ZA9710825B (en) | 1998-06-12 |
AT407071B (de) | 2000-12-27 |
AU731456B2 (en) | 2001-03-29 |
DE59702937D1 (de) | 2001-02-22 |
WO1998025007A1 (de) | 1998-06-11 |
AU5109798A (en) | 1998-06-29 |
ATA211996A (de) | 2000-04-15 |
EP0943051B1 (de) | 2001-01-17 |
ES2154475T3 (es) | 2001-04-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2019206653A1 (de) | Hochdruckpumpe | |
DE3047980A1 (de) | Druckmittelbetaetigter messerhalter | |
DE2540269A1 (de) | Steuerbare hydraulische federung fuer die mechanische stuetzvorrichtung der beweglichen, insbesondere radial verschwenkbaren walze einer walzenmuehle | |
EP0203282B1 (de) | Regelung einer hydraulischen Schlagbohrvorrichtung | |
DE2113399B2 (de) | Walzenschraemmaschine | |
AT407071B (de) | Einrichtung zum dämpfen von schwingungen von teilschnittschrämmaschinen | |
AT393293B (de) | Verfahren zum drehbohren und drehbohrvorrichtung | |
DE3626986C2 (de) | ||
DE3427962C2 (de) | ||
AT408019B (de) | Einrichtung zum erfassen und kompensieren von schwingungen von teilschnittschrämmaschinen | |
DE3100093C2 (de) | ||
DE3420548C2 (de) | ||
DE2645719C3 (de) | ||
DE2749042B2 (de) | Schwenkwerk für Teilschnitt-Schrämmaschinen | |
DE2558131C2 (de) | Walzenschrämmaschine | |
DE2431088A1 (de) | Ortsveraenderliche brechanlage | |
AT404751B (de) | Einrichtung zum einstellen des anpressdruckes eines schneidkopfes | |
DE2805302C3 (de) | Ladewerk für MüUpreßwagen | |
DE2849775C2 (de) | ||
DE2409834C3 (de) | Walzenschrämmaschine mit stirnseitig angeordneter Brechwalze | |
AT408018B (de) | Verfahren zum stabilisieren von schneidauslegern von teilschnittschrämmaschinen | |
DE102021109040A1 (de) | Drehpflug | |
DE1752918C3 (de) | Rollenrichtmaschine | |
DE2618404A1 (de) | Schwimmbagger | |
DE4123847C2 (de) | Flachbacken-Querwalzmaschine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19990521 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT DE ES GB IT |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: VOEST-ALPINE BERGTECHNIK GESELLSCHAFT M.B.H |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 20000517 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT DE ES GB IT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT Effective date: 20010117 Ref country code: GB Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20010117 |
|
REF | Corresponds to: |
Ref document number: 198781 Country of ref document: AT Date of ref document: 20010215 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 59702937 Country of ref document: DE Date of ref document: 20010222 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2154475 Country of ref document: ES Kind code of ref document: T3 |
|
EN | Fr: translation not filed | ||
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 20010117 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20081114 Year of fee payment: 12 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20091120 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20131113 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20131011 Year of fee payment: 17 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59702937 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150602 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20151229 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20141121 |