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公开(公告)号：EP0741834B1
公开(公告)日：2000-09-13
申请号：EP95909171.1
申请日：1995-02-01
CPC分类号： E21D9/13 , E21B10/28 , E21B10/60 , E21B17/1057 , E21B21/16
摘要： In a method for use in dry, rotary, crushing full-area drilling, use is made of suction air alone for removing cuttings produced during drillings. To carry out the method, two suction nozzles (13) are arranged on the underside of a cutterhead (1). These nozzles together have a substantially diametrical extent and the length of a radius on the cutterhead and are provided with suction intakes (14A) in the vicinity of the periphery of the cutterhead. The suction intakes (14A) are connectible a common suction channel (11) in the drill string (6) of the cutterhead. The suction channel (11) has substantially constant diameter.
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公开(公告)号：EP0977922A1
公开(公告)日：2000-02-09
申请号：EP98917931.2
申请日：1998-04-22
IPC分类号： E01H1/08
CPC分类号： E01H1/0845
摘要： A sweeping machine comprising a brush assembly (1) and a suction assembly (5, 7, 9). The brush assembly (1) comprises two cylindrical brushes (1) which have horizontal drive shafts (3). The drive shafts (3) extend essentially transversely of the travelling direction (K) and make a positive acute angle (α) with the transverse direction, and the free ends of the brushes (1) facing each other are arranged at a distance from each other. The brush assembly (1) is enclosed in a downwardly open housing (2), the lower edge of which is formed of an elastic skirt (15). The suction assembly (5, 7, 9) comprises a suction nozzle (5) which by means of a suction duct (9) is connectible to a suction device (7) supported by a vehicle (8). The suction nozzle extends transversely of the travelling direction (K) and in this direction behind the brushes (1). The suction nozzle (5) is formed of a casing which is open downwards and whose lower edge is formed of an elastic skirt (16). The suction nozzle (5) communicates via openings at its ends with the housing (2) of the brush assembly (1).
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公开(公告)号：EP0977922B1
公开(公告)日：2004-04-07
申请号：EP98917931.2
申请日：1998-04-22
IPC分类号： E01H1/08
CPC分类号： E01H1/0845
摘要： A sweeping machine comprising a brush assembly (1) and a suction assembly (5, 7, 9). The brush assembly (1) comprises two cylindrical brushes (1) which have horizontal drive shafts (3). The drive shafts (3) extend essentially transversely of the travelling direction (K) and make a positive acute angle ( alpha ) with the transverse direction, and the free ends of the brushes (1) facing each other are arranged at a distance from each other. The brush assembly (1) is enclosed in a downwardly open housing (2), the lower edge of which is formed of an elastic skirt (15). The suction assembly (5, 7, 9) comprises a suction nozzle (5) which by means of a suction duct (9) is connectible to a suction device (7) supported by a vehicle (8). The suction nozzle extends transversely of the travelling direction (K) and in this direction behind the brushes (1). The suction nozzle (5) is formed of a casing which is open downwards and whose lower edge is formed of an elastic skirt (16). The suction nozzle (5) communicates via openings at its ends with the housing (2) of the brush assembly (1).
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公开(公告)号：EP0741834A1
公开(公告)日：1996-11-13
申请号：EP95909171.0
申请日：1995-02-01
申请人： KROLL-DISAB AB , SANDVIK AKTIEBOLAG
CPC分类号： E21D9/13 , E21B10/28 , E21B10/60 , E21B17/1057 , E21B21/16
摘要： In a method for use in dry, rotary, crushing full-area drilling, use is made of suction air alone for removing cuttings produced during drillings. To carry out the method, two suction nozzles (13) are arranged on the underside of a cutterhead (1). These nozzles together have a substantially diametrical extent and the length of a radius on the cutterhead and are provided with suction intakes (14A) in the vicinity of the periphery of the cutterhead. The suction intakes (14A) are connectible a common suction channel (11) in the drill string (6) of the cutterhead. The suction channel (11) has substantially constant diameter.
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