US3795108A - Pressure fluid drive systems for mine installations - Google Patents

Pressure fluid drive systems for mine installations Download PDF

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Publication number
US3795108A
US3795108A US00223422A US3795108DA US3795108A US 3795108 A US3795108 A US 3795108A US 00223422 A US00223422 A US 00223422A US 3795108D A US3795108D A US 3795108DA US 3795108 A US3795108 A US 3795108A
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US
United States
Prior art keywords
pump
pressure fluid
units
fluid
vessel
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
US00223422A
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English (en)
Inventor
H Weinhold
W Schwandt
W Weirich
W Mennekes
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.)
Gewerkschaft Eisenhutte Westfalia GmbH
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Gewerkschaft Eisenhutte Westfalia 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.)
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Application filed by Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
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Publication of US3795108A publication Critical patent/US3795108A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
    • E21F17/04—Distributing means for power supply in mines
    • E21F17/08—Distributing hydraulic power; Pipe networks for hydraulic liquid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S60/00—Power plants
    • Y10S60/912—Cooling means

Definitions

  • ABSTRACT A pressure fluid drive system for supplying pressure fluid to a number of different hydraulically-operated appliances in a mine working.
  • the system employs two hydraulically interconnected pump units each having one or more pumps providing a plurality of pressure fluid outlets and a vessel containing a supply of pressure fluid for the pumps. Each of the outlets from the pumps is available for independently driving one of the appliances.
  • One of the units has an additional pump used to circulate pressure fluid between the vessels of the pump units; the vessels of the units being directly interconnected via a conduit.
  • Each pump unit has a device for cooling the fluid in the ves- [56] References Cited sel and there is also provided a device for removing air UNITED STATES PATENTS from the fluid returned to the vessel of one of the units. 1,698,189 1/1929 Dunbar 60/484 X 3,018,902 1/1962 Minty 60/97 P X 4 Claims, 1 Drawing Figure PATENTH] MAR 5 I974 VmvmOm mm Wm rm mmrwmh mm? mm @m mm mm Om @N Q.
  • the present invention relates to mineral mining installations and more particularly to pressure fluid drive systems for use in such installations.
  • a general object of the present invention is to provide an improved pressure fluid drive system.
  • a pressure fluid drive system comprising two separately operated pump units for supplying pressure fluid to different consuming appliances, each pump unit having at least one pump and a vessel for containing a supply of pressure fluid, the system additionally comprising a further pump for conveying pressure fluid between the vessels of said pump units.
  • Each pump unit preferably has a plurality of pressure fluid pump outlets.
  • a mineral mining installation having a conveyor, a mineral cutting machine with a cutting device, roof support assemblies employing hydraulically-operated props, a hydraulically operated drive unit for driving the cutting device, a hydraulically operated drive unit for moving the machine, a hydraulically operated drive unit for operating the conveyor and a pressure fluid system for supplying pressure fluid to said drive units and the props
  • the pressure fluid system comprising two separately operated pump units, each having at least one pump with a plurality of pressure fluid outlets and a vessel for containing a supply of pressure fluid, one of the pump units being connected to supply pressure fluid to the drive unit for moving the machine, to the drive unit for operating the conveyor and to the props, while the other of the pump units is connected to supply pressure fluid to the cutting device; the other of the pump units having a further pump adapted to circulate pressure fluid between the vessels of the pump units.
  • the aforesaid vessels are preferably designed to have the minimum capacity, commensurate with the performance required and the system enables the maximum performance to be achieved in the minimum of space.
  • a number of appliances typically up to eight, can be operated by the two pump units.
  • the pressure fluid has little time to settle before it is returned to the appliance in question.
  • each pump unit is provided with a device for cooling the pressure fluid.
  • the drive motor of one of the pump units operates three pumps each having a plurality of pressure fluid outlets, the motor being coupled to said pumps via gearing.
  • One of these three pumps may be a reciprocating-piston type pump.
  • the drive motor of the other of the pump units operates a reciprocating-piston type pump, constituting said at least one pump, and operates said further pump.
  • an outlet of one of said three pumps of said one pump unit is connected to the reciprocating-piston pump of the other of the pump units via pressure fluid conduit. This enables a quantity of pre-pressurized fluid to be fed to the reciprocatingpiston pump in order to compensate for leakage and ensure an adequate supply of fresh fluid.
  • the flow of fluid to the pump in question may amount to about 56 litres per minute.
  • the further pump used to circulate fluid between the pump units may in fact convey pressure fluid from the vessel of the other of the pump units to the vessel of said one pump unit and the vessels of the pump units are preferably interconnected by means of a pressure fluid conduit.
  • the system is additionally provided with a device for removing air from pressure fluid returned to the vessel of one of the pump units.
  • the system has two selfcontained pump units denoted 1 and 2.
  • the pump unit 1 is composed of an electric drive motor 15 coupled via intermediate gearing contained in a gear-box 6 to two hydraulically geared pumps 7, 9.
  • the pumps 7, 9 each have three operating stages or sections providing three outlets of pressure fluid.
  • the motor 15 drives a further pump 8 employing a reciprocating piston.
  • the unit 1 has in addition, a vessel 19 containing the supply of pressure fluid, a device 21 for removing air from the pressure fluid returned to the vessel 19 and a device 3 for cooling the pressure fluid.
  • the pump unit 2 is composed of an electric drive motor 17 coupled via gearing to a hydraulically geared pump 5 and to a further pump 16 employing a reciprocating piston.
  • the unit 2 also employs a vessel 20 containing the supply of pressure fluid and a device 4 for cooling the pressure fluid.
  • a mineral mining machine 14 employing a rotary cutting device operated by a hydraulically-driven unit 10.
  • the machine 14 is moved along the mineral face by means of a hydraulically-driven drive unit 13.
  • a conveyor extends up to the machine 14 andthe conveyor employs a circulated scraper chain assembly driven by means of a hydraulically-driven drive unit 11.
  • the mining installation further employs roof support assemblies with hydraulically-operated props 12.
  • the various hydraulic fluid consuming appliances 10, 13, 14, 11 and 12 are supplied with pressure fluid from the units 1, 2. More particularly, the pump 16 is connected to the drive unit via a pressure fluid supply conduit 23 and a pressure fluid return conduit 24. One outlet from the pump 9 is connected to the drive unit 13 via a pressure fluid supply conduit 29 and a pressure fluid return conduit 30 extends from the unit 13 to the vessel 19. Although not'shown in the drawing another outlet from the pump 9 could conveniently supply fluid to a drilling machine.
  • the pump 8 is connected to the props 12 via a pressure fluid supply conduit 27 and for clarity the connection to only one of the props 12 is illustrated.
  • the props 12 are connected through a pressure fluid return conduit 28 to the vessel 19 and again only one return conduit 28 has been shown.
  • One of the outlets from the pump 7 is connected to the drive unit 11 via a pressure fluid supply conduit 25 and a pressure fluid return conduit 26 extends from the unit 11 to the vessel 19.
  • Another of the outlets from the pump 7 feeds a quantity of pre-pressurized pressure fluid to the pump 16 via a conduit 33 in order to compensate for leakage.
  • the pump 5 acts to circulate pressure fluid from the vessel to the vessel 19.
  • a pressure fluid conduit 34 which extends from the pump 5 to the vessel 20, and acts to draw fluid from the vessel 20 into the pump 5 by suction
  • a pressure fluid conduit 31 which extends from the pump 5 to the vessel 19 and conveys pressure fluid thereto.
  • the vessels 19, 20 are linked by a conduit 32.
  • the pump 5 acts to convey fluid through the conduits 34, 31 which act serially as a pressure fluid supply conduit, and fluid is returned from the vessel 19 to the vessel 20 through the conduit 32 which acts as a return conduit.
  • the return conduits 28, 30 and 26 are connected to the conduit 31 and the conduit 31 is connected via the air removal device 21 to the vessel 19. In this way most of the returning fluid is passed through the device 21.
  • the preferred system as described can in fact drive some eight separate pressure fluid consuming units although in this particular example only five such units are utilized.
  • a fluid pressure drive system comprising:
  • first and second separately operated pumping units each comprising a motor, at least one pump having a plurality of outlets, gearing drivably connecting said motor to said pump, a vessel for storing pressure fluid for said pump, and a device for cooling fluid-pressure,
  • first conduit means connecting the outlets of said pump of the first pumping unit to a first set of said appliances
  • second conduit means connecting the outlets of said pump of the second pumping unit to a second set of said appliances
  • an auxiliary pump in said first pumping unit third conduit means connecting said auxiliary pump between the storage vessels of said pumping units, and a fluid pressure return conduit interconnected between said storage vessels.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Jet Pumps And Other Pumps (AREA)
US00223422A 1971-02-11 1972-02-04 Pressure fluid drive systems for mine installations Expired - Lifetime US3795108A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2106444A DE2106444C3 (de) 1971-02-11 1971-02-11 Hydraulischer Antrieb für eine Bergbau-Gewinnungsmaschine sowie dieser Gewinnungsmaschine zugeordnete hydraulisch betriebene Verbraucher

Publications (1)

Publication Number Publication Date
US3795108A true US3795108A (en) 1974-03-05

Family

ID=5798441

Family Applications (1)

Application Number Title Priority Date Filing Date
US00223422A Expired - Lifetime US3795108A (en) 1971-02-11 1972-02-04 Pressure fluid drive systems for mine installations

Country Status (7)

Country Link
US (1) US3795108A (enrdf_load_stackoverflow)
JP (1) JPS5427285B1 (enrdf_load_stackoverflow)
BE (1) BE774555A (enrdf_load_stackoverflow)
DE (1) DE2106444C3 (enrdf_load_stackoverflow)
ES (1) ES396758A1 (enrdf_load_stackoverflow)
FR (1) FR2125254B1 (enrdf_load_stackoverflow)
GB (1) GB1376461A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6164493A (en) * 1998-11-25 2000-12-26 Shelton, Jr.; William D. Oil recovery method
CN117569804A (zh) * 2024-01-16 2024-02-20 山西启创达矿山设备制造有限责任公司 一种双截割部采煤机摇臂及其使用方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2759223C2 (de) * 1977-12-31 1983-01-05 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Hydraulisches Leitungssystem für eine untertägige Mineralgewinnungsanlage, insbesondere Gleithobelanlage

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1698189A (en) * 1925-04-13 1929-01-08 Harold F Dunbar Variable-speed paper-machine drive train
US3018902A (en) * 1955-12-06 1962-01-30 Manning Maxwell & Moore Inc Hydraulic crane
US3222865A (en) * 1964-11-20 1965-12-14 Case Co J I Hydraulic apparatus and method
US3604205A (en) * 1969-06-19 1971-09-14 Caterpillar Tractor Co Hydraulic fluid circuit
US3606051A (en) * 1970-01-26 1971-09-20 Wayne A Peterson Hydraulic implement control circuit
US3623320A (en) * 1970-02-09 1971-11-30 Clark Equipment Co Dual source hydrostatic drive

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2520040A (en) * 1947-03-19 1950-08-22 Jeffrey Mfg Co Coal cutting, breaking, and loading mining machine
AT176527B (de) * 1951-03-29 1953-10-26 Josef Dipl Ing Wohlmeyer Verfahren zum Bohren von Stollen, Tunnels, Kanälen, Schächten od. dgl. und Stollenbohrmaschine hiefür

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1698189A (en) * 1925-04-13 1929-01-08 Harold F Dunbar Variable-speed paper-machine drive train
US3018902A (en) * 1955-12-06 1962-01-30 Manning Maxwell & Moore Inc Hydraulic crane
US3222865A (en) * 1964-11-20 1965-12-14 Case Co J I Hydraulic apparatus and method
US3604205A (en) * 1969-06-19 1971-09-14 Caterpillar Tractor Co Hydraulic fluid circuit
US3606051A (en) * 1970-01-26 1971-09-20 Wayne A Peterson Hydraulic implement control circuit
US3623320A (en) * 1970-02-09 1971-11-30 Clark Equipment Co Dual source hydrostatic drive

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6164493A (en) * 1998-11-25 2000-12-26 Shelton, Jr.; William D. Oil recovery method
US6168054B1 (en) 1998-11-25 2001-01-02 William D. Shelton, Jr. Oil recovery system and apparatus
CN117569804A (zh) * 2024-01-16 2024-02-20 山西启创达矿山设备制造有限责任公司 一种双截割部采煤机摇臂及其使用方法
CN117569804B (zh) * 2024-01-16 2024-03-19 山西启创达矿山设备制造有限责任公司 一种双截割部采煤机摇臂及其使用方法

Also Published As

Publication number Publication date
GB1376461A (en) 1974-12-04
FR2125254B1 (enrdf_load_stackoverflow) 1975-07-18
ES396758A1 (es) 1974-06-01
DE2106444C3 (de) 1985-04-18
DE2106444B2 (enrdf_load_stackoverflow) 1980-02-28
BE774555A (fr) 1972-02-14
FR2125254A1 (enrdf_load_stackoverflow) 1972-09-29
DE2106444A1 (de) 1972-09-07
JPS5427285B1 (enrdf_load_stackoverflow) 1979-09-08

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