GB1189572A - Self-Advancing Mine Roof Supports. - Google Patents

Self-Advancing Mine Roof Supports.

Info

Publication number
GB1189572A
GB1189572A GB9146/68A GB914668A GB1189572A GB 1189572 A GB1189572 A GB 1189572A GB 9146/68 A GB9146/68 A GB 9146/68A GB 914668 A GB914668 A GB 914668A GB 1189572 A GB1189572 A GB 1189572A
Authority
GB
United Kingdom
Prior art keywords
line
jet
mine roof
frames
fluid
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
GB9146/68A
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.)
Bergwerksverband GmbH
Original Assignee
Bergwerksverband 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.)
Filing date
Publication date
Application filed by Bergwerksverband GmbH filed Critical Bergwerksverband GmbH
Publication of GB1189572A publication Critical patent/GB1189572A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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
    • E21D23/26—Hydraulic or pneumatic control

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)
  • Actuator (AREA)
  • Coating Apparatus (AREA)
  • Catching Or Destruction (AREA)

Abstract

1,189,572. Advancing mine roof supports. BERGWERKSVERBAND G.m.b.H. 26 Feb., 1968 [7 March, 1967], No. 9146/68. Heading E1P. An advancing mine roof support assembly comprising at least two frames 3, 3b interconnected by an advancing ram 4a and an aligning ram 7, 7a arranged as shown, is provided with steering means in the form of two jet means 9, 10 of which one is arranged to emit a fluid jet and the other respond thereto in accordance with the degree of alignment and thereby control the supply of fluid to the rams by way of amplified means 36. Compressed air from a line 6 is adapted to urge a piston 12 forwards and also issue from a nozzle 16. Forward motion of the piston advances a bush 18 until its cam surface 19 actuates a valve 20 to connect the line 6 with a line 5 and advance the frames. Misalignment of the frames causes the jet issuing from the nozzle 16 to be directed through one of a group of check valves 33 and thence through a line 34 or 35 to the associated amplifier controlling the supply of fluid to the aligning rams. For modified forms of jet producing means, their disposition and operation the Specification and Figs. 2-5 (not shown) should be referred to.
GB9146/68A 1967-03-07 1968-02-26 Self-Advancing Mine Roof Supports. Expired GB1189572A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0091489 1967-03-07

Publications (1)

Publication Number Publication Date
GB1189572A true GB1189572A (en) 1970-04-29

Family

ID=6985864

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9146/68A Expired GB1189572A (en) 1967-03-07 1968-02-26 Self-Advancing Mine Roof Supports.

Country Status (4)

Country Link
US (1) US3528341A (en)
DE (1) DE1533713A1 (en)
FR (1) FR1559257A (en)
GB (1) GB1189572A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256343A (en) * 1979-05-16 1981-03-17 Fairchild Incorporated Mechanism for advancing continuous mining machine through mining cycle and tramming modes

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3670626A (en) * 1969-06-11 1972-06-20 Hyster Co Jet pipe fluid control
US10556631B2 (en) 2011-12-16 2020-02-11 Entro Industries, Inc. Low profile roller assembly
US8573334B2 (en) 2011-12-16 2013-11-05 Entro Industries, Inc. Rotation device for load transporting apparatus
US9533723B2 (en) 2011-12-16 2017-01-03 Entro Industries, Inc. Mounting structure with storable transport system
US10899401B2 (en) 2017-06-05 2021-01-26 Entro Industries, Inc. Yaw alignment system
US10793409B2 (en) 2017-07-12 2020-10-06 Entro Industries, Inc. Lifting loads with lifting devices
US10895882B2 (en) 2017-08-01 2021-01-19 Entro Industries, Inc. Controlling load transporting devices
US10889961B2 (en) 2017-08-08 2021-01-12 Entro Industries, Inc. Automatic walking for a load transporting apparatus
US11180319B2 (en) 2017-11-22 2021-11-23 Entro Industries, Inc. Skid system for load transport apparatus
US11407460B2 (en) 2018-05-31 2022-08-09 Entro Industries, Inc. Nonlinear walking apparatus
CN113882888B (en) * 2021-11-01 2024-04-19 安徽理工大学 Double-door type efficient and rapid circulation self-moving anchor supporting integrated equipment and control method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256343A (en) * 1979-05-16 1981-03-17 Fairchild Incorporated Mechanism for advancing continuous mining machine through mining cycle and tramming modes

Also Published As

Publication number Publication date
DE1533713A1 (en) 1970-01-22
US3528341A (en) 1970-09-15
FR1559257A (en) 1969-03-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees