GB1375562A - - Google Patents

Info

Publication number
GB1375562A
GB1375562A GB717671A GB717671A GB1375562A GB 1375562 A GB1375562 A GB 1375562A GB 717671 A GB717671 A GB 717671A GB 717671 A GB717671 A GB 717671A GB 1375562 A GB1375562 A GB 1375562A
Authority
GB
United Kingdom
Prior art keywords
support
roof
march
see figs
unit
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
GB717671A
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 filed Critical
Priority to GB717671A priority Critical patent/GB1375562A/en
Priority to DE2211605A priority patent/DE2211605C3/en
Priority to CA137,013A priority patent/CA946633A/en
Priority to ZA721773A priority patent/ZA721773B/en
Publication of GB1375562A publication Critical patent/GB1375562A/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
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face

Abstract

1375562 Advancing mine roof supports GULLICK DOBSON Ltd 10 March 1972 [16 March 1971] 7176/71 Heading E1P In an advancing mine roof support of the "walking" type comprising one unit 14a, 20, 20a mounted on its associated props and a second unit 14, 19 mounted on its associated props, see Figs. 1 and 6 (not shown), the overall width of the support can be varied by operation of rams 18 after removing the bars 20a from the beams 14a. Slide rails 27 for a roof bolter 28 may be provided on the front of the support and the legs thereof may be hinged to the roof superstructure and have removable shoes, see Figs. 5 and 7 (not shown).
GB717671A 1971-03-16 1971-03-16 Expired GB1375562A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB717671A GB1375562A (en) 1971-03-16 1971-03-16
DE2211605A DE2211605C3 (en) 1971-03-16 1972-03-10 Wandering route expansion
CA137,013A CA946633A (en) 1971-03-16 1972-03-14 Self propelled mine roof supports
ZA721773A ZA721773B (en) 1971-03-16 1972-03-15 Improvements in or relating to self propelled mine roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB717671A GB1375562A (en) 1971-03-16 1971-03-16

Publications (1)

Publication Number Publication Date
GB1375562A true GB1375562A (en) 1974-11-27

Family

ID=9828069

Family Applications (1)

Application Number Title Priority Date Filing Date
GB717671A Expired GB1375562A (en) 1971-03-16 1971-03-16

Country Status (4)

Country Link
CA (1) CA946633A (en)
DE (1) DE2211605C3 (en)
GB (1) GB1375562A (en)
ZA (1) ZA721773B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110424996A (en) * 2019-08-13 2019-11-08 天地科技股份有限公司 A kind of nothing supports automatic moving type advanced stand device repeatedly
US20210372282A1 (en) * 2020-06-01 2021-12-02 Anhui University of Science and Technology Stepping anchor supporting robot for fully mechanized working face

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL115687B1 (en) * 1978-03-24 1981-04-30 Centralny Osrodek Projektowo Konstrukcyjny Maszyn Gorn Gangway walking roof support
US4143991A (en) * 1978-05-24 1979-03-13 Frank Stafford Mine roof support system
DE2901054A1 (en) * 1979-01-12 1980-07-17 Salzgitter Maschinen Ag PROVISIONAL REMOTE EXTENSION FOR CONSTRUCTION OPERATIONS IN ROUTES OF UNDERGROUND MINING

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110424996A (en) * 2019-08-13 2019-11-08 天地科技股份有限公司 A kind of nothing supports automatic moving type advanced stand device repeatedly
CN110424996B (en) * 2019-08-13 2020-09-04 天地科技股份有限公司 Self-moving type advance support device without repeated support
US20210372282A1 (en) * 2020-06-01 2021-12-02 Anhui University of Science and Technology Stepping anchor supporting robot for fully mechanized working face

Also Published As

Publication number Publication date
DE2211605A1 (en) 1972-09-28
ZA721773B (en) 1972-12-27
DE2211605B2 (en) 1973-11-29
DE2211605C3 (en) 1974-06-20
CA946633A (en) 1974-05-07

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees