US3618325A - Hydraulic support systems for mine workings - Google Patents

Hydraulic support systems for mine workings Download PDF

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Publication number
US3618325A
US3618325A US4930A US3618325DA US3618325A US 3618325 A US3618325 A US 3618325A US 4930 A US4930 A US 4930A US 3618325D A US3618325D A US 3618325DA US 3618325 A US3618325 A US 3618325A
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US
United States
Prior art keywords
frames
shield
frame
roof
packing
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
Application number
US4930A
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English (en)
Inventor
Max Kuhn
Gunter Bell
Willy Watermann
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.)
Kloeckner Werke AG
Original Assignee
Kloeckner Werke AG
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 Kloeckner Werke AG filed Critical Kloeckner Werke AG
Application granted granted Critical
Publication of US3618325A publication Critical patent/US3618325A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/0454—Trailing plates; Coal face or goaf side sprags
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00—Methods or devices for placing filling-up materials in underground workings
    • E21F15/02—Supporting means, e.g. shuttering, for filling-up materials
    • E21F15/04—Stowing mats; Goaf wire netting; Partition walls

Definitions

  • a shield is common to the three frames and is secured to the two outer frames for movement with the same.
  • the shield prevents packing material from entering between the frames and is contoured for this purpose.
  • the center frame may advance and subsequently the two end frames together with the shield advances.
  • the roof engaging cap for each frame inclines downwardly at an angle generally parallel to the angle of rest of the packing material.
  • shields for protecting the advancing roof prop assemblies for mine use are concerned in this instance.
  • Such shields particularly bent to U-shape replace wire netting, papers or wires formerly utilized frequently as packing shields, because the durability of such shields is not good, and with the great advances in the art, which make possible the advancing hydraulic mine roof support, these shields had to be replaced too frequently.
  • the use of the shields frequently formed from sheet metal must, however, on the one hand, take place so that the support assembly can advance, and on the other hand, the shielding of dirt or the like during advance cannot permit the entrance of lumpy material into the retaining space for the props.
  • a two frame assembly which utilizes two sheet metal parts as shielding members which are suitably joined or articulated with one another.
  • Such shielding members on account of the mobility afforded by the frame joints or articulations, are easily subjected to damage by material containing coarse pieces or lumps.
  • the known shielding members made of U-shaped sheet metal up to now do not make possible the reliable shielding of the space between two or more frames when they are combined into one unit. Therefore, material gets into this space and easily blocks the advancing movement of the mine roof supports. Besides, the danger exists that the advancing devices, particularly the hydraulic props, which are ordinarily arranged between the frames, are damaged.
  • the invention provides a three frame assembly for an advancing mine roof support, which is provided with a material shielding means for shielding in all phases of the advance, the entire bottom and also the intermediary spaces between the frames against the penetration of packing material.
  • a material shielding means for shielding in all phases of the advance, the entire bottom and also the intermediary spaces between the frames against the penetration of packing material.
  • this is achieved by the use of a shield bent into U-shape and fixed only to the two outer frames but covering all three frames.
  • the center frame Upon advance, then first the center frame is pushed forward, which takes place protected from the packing insulation, which remains at the breakage edge, and is held in place by the two outer frames.
  • the shield moves up to the middle frame which has already been pushed along on the packing side of the prop support. Therefore, the shield can prevent neither the advance of the outer frames, nor the advance of the inner frame.
  • the packing material on the surface is present only between two consecutively disposed three frame assemblies and not between the frames of an assembly. In view thereof, no packing material can penetrate to the base plate means of the three frame assembly.
  • the rear ends of the mine roof engaging caps incline downwardly, so that in the driving position of the frame assembly a plane touching the cap ends, whose incidence is parallel generally to the angle of inclination of the packing material, encounters a rear angular portion of the U-shaped shield.
  • FIG. 1 is a side elevation partially in section of an embodiment of a three frame assembly taken approximately on the line 11 of FIG. 2;
  • FIG. 2 is a transverse sectional view of the three frame assembly taken approximately on the line 2-2 of FIG. 1;
  • FIG. 3 is a side elevation partly in section of an alternate embodiment of the invention and showing a view similar to FIG. 1;
  • FIG. 4 is a view similar to FIG. 2, the assembly being in accordance with FIG. 3;
  • FIG. 5 is a view of the embodiment according to FIG. 4 viewed from the packing side;
  • FIG. 6 is a view similar to FIG. 3 of a further embodiment of the invention.
  • FIG. 7 is a view similar to FIG. 4 of the embodiment according to FIG. 6;
  • FIG. 8 is a view similar to FIG. 5 of the embodiment of the invention according to FIGS. 6 and 7.
  • the three frame assembly illustrated in the drawings consists of frames A, B, C with hydraulic props or roof supports A1, B1, C1 on the packing side, base-rails A2, B2, C2 and roof supporting caps A3, B3, C3.
  • the upper supporting caps on the packing side are constructed in predetermined manner, which is to be explained more in detail in the example of the cap B3.
  • the end 5 of this cap facing the packing is inclined downwardly so that at 6 the upper peak of the angle results, which includes the downwardly inclined end portion 5 joined to a forwardly extending front part 7.
  • a breakage edge D extending upwardly and illustrated in dotted lines.
  • Dotted line E designates the plane contacting the end of the part 5, and the incidence of the plane corresponds to the angle of inclination of the packing material.
  • a U- shaped bent sheet metal part 8 On the packing side there is disposed in the embodiments shown by way of example on FIGS. 1 to 5, a U- shaped bent sheet metal part 8.
  • the sheet metal part 8 is so constructed that between its parallel end flanges 9 lie the three frames A, B, C forming the support.
  • the flanges 9 are connected by rods 12 to roof props A1 and C1 of the two outer frames A and C respectively.
  • Transversely extending connecting beams '13 and 14 on the packing side are arranged in spaced superimposed relation in the props A and C of the outer frames A and C respectively. These frames A and C are advanced simultaneously by suitable hydraulic rams (not shown) while the middle frame B is first advanced.
  • the beams 13 and 14 extend through in flanges 15 and 16, which for this purpose are provided with apertures 17.
  • the flanges :15 and 16 are arranged on the side of the panel 18 of the U-shaped sheet metal 8.
  • the U-shaped shield has a lower portion 19 which extends vertically, a middle portion Q which is inclined slanting upwardly and forwardly in the open support space, and a more abruptly inclined upper closure portion 21.
  • the packing insulation in the embodiment shown by way of example in FIGS. 1 and 2 consists of a sheet metal bent U-shaped shield
  • This sheet metal box or case is provided with reinforcements 24' in order to impart to it the required stiffness.
  • On the ceiling engaging caps A3 to C3 is arranged, as particularly shown in the example of the cap A3 in FIG. 3, a structure 24 on which is arranged a curtain made of individual rods 25.
  • the rods may also be tubular and are guided telescopically in the opening of the shield forming the packing insulation. They pass upon lowering of the caps into the shield and upon subsequent loading of the props are again drawn out of the opening.
  • the shield consists of a rearward, relatively flat construction 30.
  • This construction is located only along the rear side of the three frame assembly consisting of the frames A, B and C. It consists of a plurality of pipes 31.
  • the caps again support a guide rod 32 to which rods or pipes 33 are fixed.
  • the pipes 33 are of smaller crosssection than the pipes 31 and are guided telescopically in these pipes.
  • fastening means are provided only on the two outer frames for the curtain of pipes 33 and are indicated at 34 and 35, respectively.
  • FIGS. 3 to 5 on the one hand, and in FIGS. 6 to 8 on the other hand, may be inserted with and without bent caps.
  • a three frame assembly for advancing mine face support, each frame assembly having a base rail, a hydraulic roof support and a roof supporting cap, said frames being arranged in a row, a shield having a portion extending completely across the rear of the several frames, parallel wings on opposite sides of said shield, bracket means on each of the outer end frame assemblies, beams extending transversely of said shield and secured at opposite ends to said bracket means, and means for securing each wing to the adjacent end frame assembly, thereby enabling the outermost assemblies along with said shield to be advanced while the intermediate assembly is under load, and the intermediate assembly is advanced when the outermost assemblies are under load, whereby the entire bottom and the spaces between the frames are shielded against the penetration of packing material.
  • bracket means comprises flange plates extending from said shield and through which said beams extend, and fixed connections between the end portions of said beams and the outer end frames, respectively.

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)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Tents Or Canopies (AREA)
US4930A 1969-01-23 1970-01-22 Hydraulic support systems for mine workings Expired - Lifetime US3618325A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE6902441U DE6902441U (de) 1969-01-23 1969-01-23 Dreirahmengespann fuer den schreitenden strebausbau mit einer an seinen versatzseitigen stempeln angebrachten versatzabkleidung

Publications (1)

Publication Number Publication Date
US3618325A true US3618325A (en) 1971-11-09

Family

ID=6599209

Family Applications (1)

Application Number Title Priority Date Filing Date
US4930A Expired - Lifetime US3618325A (en) 1969-01-23 1970-01-22 Hydraulic support systems for mine workings

Country Status (4)

Country Link
US (1) US3618325A (fr)
BE (1) BE744806A (fr)
DE (1) DE6902441U (fr)
FR (1) FR2028963A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848420A (en) * 1972-03-24 1974-11-19 Gullick Dobson Ltd Mine roof supports
US4812081A (en) * 1986-07-02 1989-03-14 Voest-Alpine Aktiengesellschaft Movable consolidating trestle for securing the excavating edge
CN103696788A (zh) * 2013-12-17 2014-04-02 中国神华能源股份有限公司 空巷支护设备及综采工作面过空巷的施工方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1930754B1 (de) * 1969-06-18 1970-12-23 Hemscheidt Maschf Hermann Versatzabschirmung fuer ein hydraulisch schreitendes Ausbaugespann
DE2646563C3 (de) * 1976-10-15 1979-08-09 Bochumer Eisenhuette Heintzmann Gmbh & Co, 4630 Bochum Ausbau für den Saumbereich eines Strebs
DE3319806A1 (de) * 1983-06-01 1984-12-06 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Abschirmwand fuer bergbau-untertagebetriebe, insbesondere versatzwand

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848420A (en) * 1972-03-24 1974-11-19 Gullick Dobson Ltd Mine roof supports
US4812081A (en) * 1986-07-02 1989-03-14 Voest-Alpine Aktiengesellschaft Movable consolidating trestle for securing the excavating edge
CN103696788A (zh) * 2013-12-17 2014-04-02 中国神华能源股份有限公司 空巷支护设备及综采工作面过空巷的施工方法

Also Published As

Publication number Publication date
BE744806A (fr) 1970-07-01
DE6902441U (de) 1969-05-22
FR2028963A1 (fr) 1970-10-16

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