GB1105683A - Improvements in fluid pressure drive systems for mineral mining machines - Google Patents

Improvements in fluid pressure drive systems for mineral mining machines

Info

Publication number
GB1105683A
GB1105683A GB4631665A GB4631665A GB1105683A GB 1105683 A GB1105683 A GB 1105683A GB 4631665 A GB4631665 A GB 4631665A GB 4631665 A GB4631665 A GB 4631665A GB 1105683 A GB1105683 A GB 1105683A
Authority
GB
United Kingdom
Prior art keywords
plunger
spring
lever
pressure
operated
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
GB4631665A
Inventor
Forrest Symington Anderson
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.)
Anderson Mavor Ltd
Original Assignee
Anderson Mavor Ltd
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 Anderson Mavor Ltd filed Critical Anderson Mavor Ltd
Priority to GB4631665A priority Critical patent/GB1105683A/en
Priority to DE19661550648 priority patent/DE1550648A1/en
Priority to US59116466 priority patent/US3392525A/en
Publication of GB1105683A publication Critical patent/GB1105683A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/004—Fluid pressure supply failure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C29/00—Propulsion of machines for slitting or completely freeing the mineral from the seam
    • E21C29/04—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C29/00—Propulsion of machines for slitting or completely freeing the mineral from the seam
    • E21C29/04—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains
    • E21C29/14—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains by haulage cable or chain pulling the machine along the working face
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/4069—Valves related to the control of neutral, e.g. shut off valves
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7782—With manual or external control for line valve

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

1,105,683. Hydrostatic transmissions. ANDERSON MAVOR Ltd. 27 Oct., 1966 [2 Nov., 1965], No. 46316/65. Heading F2D. An hydrostatic transmission for a mineral mining machine includes a fluid pressure operated plunger device which in the event of loss of pressure in the system operates to move the selector valve to the neutral position. In the closed circuit system shown an electric motor 2 drives main and primary pumps 1, 3, the flow to a motor 8 being controlled by a selector valve 9 operated by a hand lever 10 with which is associated a spring-loaded plunger 13 in a cylinder 12 connected to the primary pump line 6 and exhausting through a bleed valve 30. With normal working the pressure in the system overcomes plunger spring 14 and the end 31 of the plunger is held clear of lever 10, but in the event of loss of pressure spring 14 moves member 31 into contact with the lever 10 which is rotated into and held in the neutral position. In a modification, Fig. 2 (not shown), the valve 9 includes a biasing spring (32) and a spring rocker arm (36) is mounted between the plunger and selector lever. In a further modification, Fig. 4 (not shown), the plunger is operated by pilot valves (23, 25) connected between the flow and return lines 4, 5.
GB4631665A 1965-11-02 1965-11-02 Improvements in fluid pressure drive systems for mineral mining machines Expired GB1105683A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB4631665A GB1105683A (en) 1965-11-02 1965-11-02 Improvements in fluid pressure drive systems for mineral mining machines
DE19661550648 DE1550648A1 (en) 1965-11-02 1966-10-29 Hydraulic drive system
US59116466 US3392525A (en) 1965-11-02 1966-11-01 Hydraulic drive systems for mineral mining machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4631665A GB1105683A (en) 1965-11-02 1965-11-02 Improvements in fluid pressure drive systems for mineral mining machines

Publications (1)

Publication Number Publication Date
GB1105683A true GB1105683A (en) 1968-03-13

Family

ID=10440748

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4631665A Expired GB1105683A (en) 1965-11-02 1965-11-02 Improvements in fluid pressure drive systems for mineral mining machines

Country Status (3)

Country Link
US (1) US3392525A (en)
DE (1) DE1550648A1 (en)
GB (1) GB1105683A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2302410A1 (en) * 1975-02-28 1976-09-24 Coal Industry Patents Ltd ORE MILLING MACHINE

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3680313A (en) * 1971-01-14 1972-08-01 Emerson Electric Co Closed loop-open loop circuit for hydro-static transmissions
FR2414665B1 (en) * 1978-01-13 1986-06-27 Zahnradfabrik Friedrichshafen HYDRAULIC CONTROL DEVICE FOR ADJUSTING THE DEMULTIPLICATION OF A HYDROSTATIC TRANSMISSION
US4561250A (en) * 1981-02-10 1985-12-31 Hitachi Construction Machinery Co., Ltd. Hydraulic drive system having a plurality of prime movers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2302410A1 (en) * 1975-02-28 1976-09-24 Coal Industry Patents Ltd ORE MILLING MACHINE

Also Published As

Publication number Publication date
DE1550648A1 (en) 1969-07-10
US3392525A (en) 1968-07-16

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