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71. 发明专利

ATA452382A 未知
公开(公告)号：ATA452382A
公开(公告)日：1984-02-15
申请号：AT452382
申请日：1982-12-13
申请人： POWONDRA FRANZ DIPL ING DR
IPC分类号： E21D15/22 , E21D21/00 , F16B31/02 , F16F7/12

72. 发明专利

GB8331638D0 YIELDABLE STILT 未知
公开(公告)号：GB8331638D0
公开(公告)日：1984-01-04
申请号：GB8331638
申请日：1983-11-26
申请人： CIRTEMETRIC LTD
IPC分类号： E21D11/18 , E21D15/22

73. 发明专利

AU4630779A MINE ROOF SUPPORT 未知
公开(公告)号：AU4630779A
公开(公告)日：1980-05-08
申请号：AU4630779
申请日：1979-04-20
申请人： LINSINGEN HEINTZMANN P V
发明人： SPIES KLAUS
IPC分类号： E21D15/00 , E21D15/16 , E21D15/28 , E21D15/22 , E21D15/54 , E21D15/582 , E21D15/60
摘要： A method and an arrangement are disclosed for supporting a roof of an underground excavation. A hollow prop casing of two or more telescopable sections is erected and telescoped apart until it bears on the floor and the roof. The sections are then biased against the floor and the roof and the prop casing is filled with a hardenable substance which upon hardening forms in the casing a solid column capable of supporting the roof.

74. 发明专利

LU81240A1 未知
公开(公告)号：LU81240A1
公开(公告)日：1979-09-10
申请号：LU81240
申请日：1979-05-09
申请人： DAVUM
发明人： HABIB P
IPC分类号： E21D11/22 , E21D15/22 , E21D
摘要： A device for limiting stresses exerted by neighbouring ground on a buried structure which comprises at least two neighbouring elements which form at least one part of the wall of the structure. The stress limiting device comprises at least one longitudinal slidable plate adapted to be connected by one of its edge portions to one of the neighbouring structure elements, at least two longitudinal guide elements adapted to be connected to the other structure element and applied respectively by one of their faces against at least the opposed edge portion of the slidable plate. A plurality of fixing means extend through apertures in the slidable plate and in the guide elements for clamping the opposed edge portion of the slidable plate between said guide elements. At least one of the guide elements constitutes a fishplate. At least the apertures in the opposed edge portion of the slidable plate are disposed in a plurality of spaced-apart longitudinal rows so that the zones located between the apertures of the same row of two adjacent rows form zones of deformation and/or fracture capable of yielding under the fixing means by a sliding of the slidable plate between the guide elements under the effect of forces which may be exerted on the device by the structure elements.

75. 发明专利

GB1506581A STILTS FOR USE IN MINE WORKINGS 未知
公开(公告)号：GB1506581A
公开(公告)日：1978-04-05
申请号：GB2230874
申请日：1975-08-05
申请人： GKN SANKEY LTD
IPC分类号： E21D15/22
摘要： 1506581 Yieldable mine roof support stilts GKN SANKEY Ltd 5 Aug 1975 [18 May 1974] 22308/74 Heading E1E A stilt for a mine roof support leg 11, 211 includes an elongate deformable member 13, 213 having at least two limbs 14, 214 and 15, 215 extending in the same direction from a bend 17, 217 therebetween, the limb 15, 215 being adapted to carry the leg 11, 211 and being itself supported by the -limb 14, 214 whereby under load one limb 15, 214 is stressed in tension and increases in length, and the other limb 14, 215 is stressed in compression and decreases in length, with movement of the bend 17, 217 along the deformable member, to control descent of the leg. As shown, there are two of each such limb contained in a tubular body 10, 210, the inner limbs 15, 215 being connected by a bend 16 or welded block 219 to engage the leg.

76. 发明专利

NL6408945A 未知
公开(公告)号：NL6408945A
公开(公告)日：1966-02-07
申请号：NL6408945
申请日：1964-08-05
IPC分类号： E21D11/18 , E21D15/22

77. 发明专利

GB998163A Mine roof support stilt 未知
公开(公告)号：GB998163A
公开(公告)日：1965-07-14
申请号：GB2513260
申请日：1960-07-19
申请人： COAL INDUSTRY PATENTS LTD
发明人： MACCOLL DUNCAN JOHN
IPC分类号： E21D11/18 , E21D15/22
摘要： 998,163. Yielding mine arch supports. COAL INDUSTRY (PATENTS) Ltd. Oct 19, 1961 [July 19, 1960], No. 25132/60. Heading E1E. A yielding mine arch stilt, Fig. 1, is provided with a slotted shearing plate 19 which is adapted to be engaged by a cutter mounted on an arch leg. Plate 19 and spacing plates 10 - - 15 are clamped between channel girders 16, 17 by bolts and the spacing plates and girders are also spot welded together. In a modification, Fig. 2, the stilt consists of four pieces of angle iron 21, 22, 23, 24 which are bolted together with a slotted shearing plate 19 therebetween for co-operation with a cutter 25. Each pair of angle iron sections may be arranged in T-formation as shown or in S-formation. Interchangeable shearing plates of different thickness and/or degrees of shear resistance may be employed. The plates 19 may be made of mild steel.

78. 发明专利

DE1138008B 未知
公开(公告)号：DE1138008B
公开(公告)日：1962-10-18
申请号：DEG0027913
申请日：1959-09-09
申请人： PIERRE MARIA HUBERT CHRISTIAAN , JOSEPHUS MARIA VLEESKENS
发明人： GIJZEN PIERRE MARIA HUBERT CHR , VLEESKENS JOSEPHUS MARIA , VLEESKENS FRANCISCUS ADRIANUS
IPC分类号： E21D15/22

79. 发明专利

FR1285810A 未知
公开(公告)号：FR1285810A
公开(公告)日：1962-02-23
申请号：FR858045
申请日：1961-04-07
IPC分类号： E21D11/18 , E21D15/22

80. 发明专利

GB802803A Improvements in or relating to hydraulic pit props 未知
公开(公告)号：GB802803A
公开(公告)日：1958-10-15
申请号：GB3521855
申请日：1955-12-08
申请人： MASTABAR MINING EQUIP CO LTD
发明人： TEBB BERNARD , PERRY CLARENCE HERBERT
IPC分类号： E21D15/22 , E21D15/30 , E21D15/44 , E21D15/45
摘要： 802,803. Hydraulic pit props. MASTABAR MINING EQUIPMENT CO., Ltd., [formerly MASTABAR BELT FASTENER CO., Ltd.]. Nov. 21, 1956 [Dec. 8, 1955], No. 35218/55. Class 20(2) [Also in Group XXIX] A hydraulic pit prop has a torsion spring loading a relief valve attached to a spring loaded member which can be operated externally. Turning of the shaft 31, Fig. 1, reciprocates the pistons 25 and 22 by way of the connecting rod 28 so as to raise the upper prop 17 by pumping oil from the reservoir into the space 50 (via the bore 47, chamber 43, bore 42, cylinder 21 and bore 48). External adjustment of eye 71 (by lanyard or during extension by the wedge ended cam 73) controls valves 57 and 53, Fig. 3, via plunger 67, Fig. 1, torsion bar, spring 61 and arm 62, collapse of the prop being effected by escape of oil from space 50 to the reservoir via bores 55, 56, pig. 3, and, with further movement of plunger 67, bores 51, 52. Operation of the -two - stage pump is described in Specification 802,804.

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