GB1235353A - Improvements in or relating to longwall mineral mining installations - Google Patents

Improvements in or relating to longwall mineral mining installations

Info

Publication number
GB1235353A
GB1235353A GB303368A GB303368A GB1235353A GB 1235353 A GB1235353 A GB 1235353A GB 303368 A GB303368 A GB 303368A GB 303368 A GB303368 A GB 303368A GB 1235353 A GB1235353 A GB 1235353A
Authority
GB
United Kingdom
Prior art keywords
conveyor
plough
motor
cause
mining
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
GB303368A
Inventor
Kenneth Thomas Lloyd
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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents 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 Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Priority to GB303368A priority Critical patent/GB1235353A/en
Publication of GB1235353A publication Critical patent/GB1235353A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21C35/04—Safety devices

Abstract

1,235,353. Mining installations. COAL INDUSTRY (PATENTS) Ltd. 14 Jan., 1969 [19 Jan., 1968], No. 3033/68. Heading E1F. A longwall mineral mining installation includes a mining machine mounted for reciprocal movement along a mineral face, and a buffer assembly having a first part attached to an abutment of the installation and a second part adapted to be contacted by the machine, when the latter is moving, to decelerate it at a predetermined rate. The machine is formed by a plough 2 loading a conveyor 3 driven by a motor 6, the plough being driven by motor 7 through an endless chain 8. The motors 6 and 7 may be duplicated at the other end of the conveyor 3. Self-advancing roof supports 10 and conveyor-advancing rams 11 are provided. The buffer assembly 13 is formed by a piston 14 and a cylinder 15 and a similar assembly may be disposed at the other end of the conveyor 3. The fluid from each cylinder 15 passes through a hydraulic yield valve or a variable orifice to a hydraulic accumulator 16, and a pressure responsive switch provided in the circuit is operable upon a predetermined pressure being reached to cause the plough motor 7 to be stopped. The switch may also cause sequence valves to operate the conveyor advancing rams 11, and cause the motor 7 to be reversed for return movement of the plough. The pressure responsive switch may be replaced by a switch actuated by movement of the piston 14.
GB303368A 1968-01-19 1968-01-19 Improvements in or relating to longwall mineral mining installations Expired GB1235353A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB303368A GB1235353A (en) 1968-01-19 1968-01-19 Improvements in or relating to longwall mineral mining installations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB303368A GB1235353A (en) 1968-01-19 1968-01-19 Improvements in or relating to longwall mineral mining installations

Publications (1)

Publication Number Publication Date
GB1235353A true GB1235353A (en) 1971-06-16

Family

ID=9750696

Family Applications (1)

Application Number Title Priority Date Filing Date
GB303368A Expired GB1235353A (en) 1968-01-19 1968-01-19 Improvements in or relating to longwall mineral mining installations

Country Status (1)

Country Link
GB (1) GB1235353A (en)

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