GB1038262A - Improvements in or relating to advancing hydraulic mine roof and like supports - Google Patents

Improvements in or relating to advancing hydraulic mine roof and like supports

Info

Publication number
GB1038262A
GB1038262A GB476564A GB476564A GB1038262A GB 1038262 A GB1038262 A GB 1038262A GB 476564 A GB476564 A GB 476564A GB 476564 A GB476564 A GB 476564A GB 1038262 A GB1038262 A GB 1038262A
Authority
GB
United Kingdom
Prior art keywords
line
connect
mine roof
valve
units
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
GB476564A
Inventor
Archelaius Dawson Allen
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.)
Gullick Ltd
Original Assignee
Gullick 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 Gullick Ltd filed Critical Gullick Ltd
Priority to GB476564A priority Critical patent/GB1038262A/en
Priority to DEG42691A priority patent/DE1258371B/en
Priority to AT92965A priority patent/AT259490B/en
Priority to NL6501357A priority patent/NL6501357A/xx
Publication of GB1038262A publication Critical patent/GB1038262A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • E21D23/0073—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices with advancing shifting devices connected therewith
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
    • E21D23/18—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices of advancing mechanisms
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/20—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members
    • F15B11/205—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members the position of the actuator controlling the fluid flow to the subsequent actuator

Abstract

1,038,262. Sequentially operated hydraulic mine roof supports. GULLICK Ltd. Feb. 2, 1965 [Feb. 4, 1964], No. 4765/64. Heading F1P. A series of sequentially advanced mine roof support units each comprising one or more props 13 Fig. 1 (not shown) and an advancing ram 18 and having means whereby operation of the second and subsequent units is initiated automatically after resetting of the props of the previous unit is divided into two groups A, B each supplied by supply lines 10, 11 connected to separate pumps. Group A units alternate with those of group B and in operation hydraulic fluid issuing from the previously operated unit through a line 32 is transmitted through a branch line 33 to operate a piston valve 23 serving to connect the prop 13 to a return line 12 and pressure in line 32 also actuates ram 18 which on reaching the end of its stroke opens a valve 22 to connect line 32 with the lower end of valve 23 to reset prop 13 and to connect line 32 with the lower end of a piston valve 28 to lift the same against a spring 28a and thus connect supply line 10 to the line 32 leading to the next support unit in the series.
GB476564A 1964-02-04 1964-02-04 Improvements in or relating to advancing hydraulic mine roof and like supports Expired GB1038262A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB476564A GB1038262A (en) 1964-02-04 1964-02-04 Improvements in or relating to advancing hydraulic mine roof and like supports
DEG42691A DE1258371B (en) 1964-02-04 1965-01-28 Migrating hydraulic longwall mining
AT92965A AT259490B (en) 1964-02-04 1965-02-02 Migrating hydraulic longwall mining
NL6501357A NL6501357A (en) 1964-02-04 1965-02-03

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB476564A GB1038262A (en) 1964-02-04 1964-02-04 Improvements in or relating to advancing hydraulic mine roof and like supports

Publications (1)

Publication Number Publication Date
GB1038262A true GB1038262A (en) 1966-08-10

Family

ID=9783375

Family Applications (1)

Application Number Title Priority Date Filing Date
GB476564A Expired GB1038262A (en) 1964-02-04 1964-02-04 Improvements in or relating to advancing hydraulic mine roof and like supports

Country Status (4)

Country Link
AT (1) AT259490B (en)
DE (1) DE1258371B (en)
GB (1) GB1038262A (en)
NL (1) NL6501357A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4247226A (en) * 1977-12-31 1981-01-27 Gewerkschaft Eisenhutte Westfalia Hydraulic conduit systems for mine installations
US4737482A (en) * 1983-07-25 1988-04-12 Exxon Research & Engineering Co. Catalysts for oxidation of olefins to ketones
US4876392A (en) * 1982-09-21 1989-10-24 Exxon Research & Engineering Company Process for preparation of keystones by oxidation of secondary alcohols using a trimetallic catalyst comprising molybdenum, rhenium and a group VIII noble metal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1131626B (en) * 1958-04-14 1962-06-20 Kloeckner Werke Ag Method and device for controlling the robbery and setting process of hydraulic longwall construction frames
NL256743A (en) * 1959-10-12
FR1271386A (en) * 1959-10-12 1961-09-08 Coal Industry Patents Ltd Roof supports for mining galleries

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4247226A (en) * 1977-12-31 1981-01-27 Gewerkschaft Eisenhutte Westfalia Hydraulic conduit systems for mine installations
US4876392A (en) * 1982-09-21 1989-10-24 Exxon Research & Engineering Company Process for preparation of keystones by oxidation of secondary alcohols using a trimetallic catalyst comprising molybdenum, rhenium and a group VIII noble metal
US4737482A (en) * 1983-07-25 1988-04-12 Exxon Research & Engineering Co. Catalysts for oxidation of olefins to ketones

Also Published As

Publication number Publication date
AT259490B (en) 1968-01-10
DE1258371B (en) 1968-01-11
NL6501357A (en) 1965-08-05

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