US3558193A - Tunnelling or mining machine canopy with ventilation ducts - Google Patents

Tunnelling or mining machine canopy with ventilation ducts Download PDF

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Publication number
US3558193A
US3558193A US797434A US3558193DA US3558193A US 3558193 A US3558193 A US 3558193A US 797434 A US797434 A US 797434A US 3558193D A US3558193D A US 3558193DA US 3558193 A US3558193 A US 3558193A
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US
United States
Prior art keywords
canopy
ducts
machine
tunnelling
ventilation
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 - Lifetime
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US797434A
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English (en)
Inventor
Andrew W Howarth
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.)
Greenside Machine Co Ltd
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Greenside Machine Co 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 Greenside Machine Co Ltd filed Critical Greenside Machine Co Ltd
Application granted granted Critical
Publication of US3558193A publication Critical patent/US3558193A/en
Anticipated expiration legal-status Critical
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D19/00—Provisional protective covers for working space
    • E21D19/04—Provisional protective covers for working space for use in drifting galleries
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
    • E21D9/0875—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a movable support arm carrying cutting tools for attacking the front face, e.g. a bucket

Definitions

  • a canopy for a tunnelling or mining machine comprises a plurality of ducts or pipes extending longitudinally of the canopy and adapted to transport dust laden air from the region in advance of the machine to the rear of the machine where the air passes into means for further transport and/or dust collection, with means to draw the dust laden air along the ducts or pipes.
  • This invention relates to tunnelling or mining machines and in particular to shields or roof supports for association with such machines.
  • a roof support and/or shield and/or canopy device (such devices hereinafter being referred to as canopies) to act on the green roof just cut before any permanent supports can be erected, which is usually not until after the machine has advanced still further so as not to interfere with such erection.
  • canopies advantageously obviate interruption of cutting in order to erect roof supports.
  • arcuate members serving as a canopy to protect the operators as well as to stabilize the machine during cutting.
  • a canopy for a tunnelling or mining machine comprises a plurality of ducts or pipes extending longitudinally of the canopy and adapted to transport dust laden air from the region in advance of the machine to the rear of the machine.
  • the air passes into means for further transport and/ or dust collection, with means to draw the dust laden air along the ducts or pipes.
  • the canopy may be provided with any number of ducts, the number depending on several factors such as the particular rock through which the machine is cutting and/or the cross-sectional areas of the ducts and/or the rate of air extraction through the ducts.
  • two ducts may be ice associated with the central portion of the Canopy, With one duct associated with each side member which are pivotally attached at each side of the central portion.
  • the association of the ducts with the canopy may take the form kof rectangular section ducts formed integrally with the canopy and passing through transverse girderwork of the canopy, but inside the outer periphery of the canopy, or alternatively separate ducts may be secured by any convenient means to the inner periphery of the canopy.
  • the ends of the ducts emerging at the rear of the machine may be of circular section for convenient connection to ventilation pipes which serve as the means of further transport of the dust laden air.
  • each ventilation pipe may be incorporated a blower to serve as the means to draw dust laden air along the ducts.
  • a number or all the ventilation pipes may enter a manifold to be served by a single blower.
  • the ventilation pipes are preferably exible to accommodate the advancing machine.
  • FIG. 1 is a perspective view of a canopy incorporating two ventilation ducts according to the invention
  • FIG. 2 is an underneath plan View of an alternative construction of the canopy incorporating two ventilation ducts
  • FIG. 3 is a view in the direction of arrow A of FIG. 2;
  • FIG. 4 is a view in the direction of arrow B of FIG. 2 showing the canopy installed in a tunnel;
  • FIG. 5 is a perspective View similar to FIG. 1 but showing a canopy incorporating four ventilation ducts.
  • the canopy has a front end 1 and a rear end 2.
  • a central portion 3 carries pivots 4 for two side members 5.
  • a ventilation duct 6 extends from the front end 1 of each side member 5 and each is of rectangular section up to their rear ends 7 which emerge from the rear end 2 of the canopy, Where they alter to circular section.
  • a ventilation pipe 8 (one only being illustrated), the pipe incorporating a conventional blower or fan indicated diagrammatically at 9, the ventilation pipe continuing at 10 beyond the blower to collection or separation means for the dust laden air.
  • At least one substantially vertically arranged ram (not shown) is adapted to act on the central portion 3 from the machine frame 20 with which the canopy is associated in use, to urge the central portion against the roof of the tunnel being driven.
  • FIG. 5 like reference numerals have been used for like components of other gures.
  • FIG. 5 construction the difference of the FIG. 5 construction over the FIG. 1 construction is to be seen in the addition of a pair of spaced ventilation ducts 6A in the central portion 3 of the canopy. Again, these ducts are of rectangular section except at their circuar section rear ends 7A which emerge from the rear end 2 of the canopy.
  • a tunnelling machine having a canopy supported thereon, the canopy having a plurality of ducts extending longitudinally therein, and provided at their forward ends with dust inlet openings located in the immediate vicinity of the machine working area and connected at their rearward ends with means for drawing dust-laden air therethrough.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Prevention Of Fouling (AREA)
  • Duct Arrangements (AREA)
US797434A 1968-02-09 1969-02-07 Tunnelling or mining machine canopy with ventilation ducts Expired - Lifetime US3558193A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6655/68A GB1236029A (en) 1968-02-09 1968-02-09 Improvements in or relating to tunnelling or mining machines

Publications (1)

Publication Number Publication Date
US3558193A true US3558193A (en) 1971-01-26

Family

ID=9818392

Family Applications (1)

Application Number Title Priority Date Filing Date
US797434A Expired - Lifetime US3558193A (en) 1968-02-09 1969-02-07 Tunnelling or mining machine canopy with ventilation ducts

Country Status (4)

Country Link
US (1) US3558193A (fr)
CH (1) CH501778A (fr)
FR (1) FR2001687A1 (fr)
GB (1) GB1236029A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3823566A (en) * 1972-12-18 1974-07-16 Ingersoll Rand Co Earth-supporting apparatus and method
US3903707A (en) * 1973-03-24 1975-09-09 Gewerk Eisenhuette Westfalia Tunneling shields
US3919930A (en) * 1972-11-22 1975-11-18 Mitsui Shipbuilding Eng Air circulating apparatus for use in tunnels
US4095434A (en) * 1974-11-19 1978-06-20 Coal Industry (Patents) Limited Mine equipment

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2942914A1 (de) * 1979-10-24 1981-04-30 Blohm + Voss Ag, 2000 Hamburg Verfahren und vorrichtung zum herstellen zylindrischer koerper
GB2227780A (en) * 1988-12-16 1990-08-08 Winster Group Roof support assembly

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3919930A (en) * 1972-11-22 1975-11-18 Mitsui Shipbuilding Eng Air circulating apparatus for use in tunnels
US3823566A (en) * 1972-12-18 1974-07-16 Ingersoll Rand Co Earth-supporting apparatus and method
US3903707A (en) * 1973-03-24 1975-09-09 Gewerk Eisenhuette Westfalia Tunneling shields
US4095434A (en) * 1974-11-19 1978-06-20 Coal Industry (Patents) Limited Mine equipment

Also Published As

Publication number Publication date
GB1236029A (en) 1971-06-16
CH501778A (fr) 1971-01-15
DE1906063A1 (de) 1969-08-21
DE1906063B2 (de) 1977-05-18
FR2001687A1 (fr) 1969-09-26

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