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公开(公告)号：EP0080445A2
公开(公告)日：1983-06-01
申请号：EP82850226.0
申请日：1982-11-09
IPC分类号： B25B23/145
CPC分类号： B25B21/008 , B25B23/0078 , B25B23/145
摘要： A pneumatic power tool for tightening screw joints comprising a primary motor 11 for the high speed running down sequence and a secondary motor 12 for the high torque final tightening sequence. The tool includes a coupling guering 18 providing a high ratio gearing for the secondary motor 12, a gearing of a substantially lower ratio for the primary motor 11 and a oneway clutch 30 by which the secondary motor 12 is automatically engaged at decreasing tightening speed. An air supply valve 33 is employed to substantially reduce the air consumption of the tool by keeping the air supply to the secondary motor 12 shut until a certain degree of tightness in the joint is obtained which by the supply valve 33 is experienced as an increased back pressure from the primary motor 11. At a back pressure corresponding to the predetermined certain degree of tightness in the joint the valve 33 is opened and the secondary motor 12 is energized.
A reduction gearing 19 is supported in a casing 90 which is rotatively connected to the tool housing 10 and provided with a laterally extending torque reaction bar 92. An arresting mechanism is employed to prevent rotation between the tool housing 10 and the gear casing 90 when the tool is in operation. Balls 96, 97 are arranged in the housing 10 to lock either the gear casing 90 or the throttle valve trigger 16 against movement relative to the tool housing 10 by engaging either one of a row of notches 93 oh the gear casing 90 or a groove on the trigger stem 94.-
公开(公告)号：EP0004840B1
公开(公告)日：1983-04-13
申请号：EP79850028.6
申请日：1979-04-11
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公开(公告)号：EP0040184A3
公开(公告)日：1982-02-24
申请号：EP81850054
申请日：1981-03-25
CPC分类号： B66D3/18
摘要： This invention relates to a pneumatically operated hoist comprising a housing 10 provided with a suspension means 12,13 for suspension of the hoist from an overhead support, a pneumatically driven motor 15 provided with a first flow passage 75 arranged for serving as a pressurized air inlet during raising of a load and an air exhaust passage during lowering of the load and a second flow passage76 arranged for serving as an air exhaust passage during raising of the load and a pressurized air inlet during lowering of the load, a load engaging means 16,17 drivingly connected to the motor 15, and a control means 18 for regulating airflowto and from the motor 15. Known such hoists are slow in lowering light loads or too fast in lowering heavy loads safely. According to this invention the control means incorporate a flow restricting means 77,78 provided in said first flow passage 75 and arranged for restricting flow through said first flow passage 75 during lowering of the load, and a load sensitive shunt valve 41 arranged for providing a second air exhaust passage 69,70 during lowering of a load having a weight below a predetermined magnitude and for closing said second air exhaust passage 69,70 during lowering of a load having a weight greater than said predetermined magnitude whereby more efficient operation is obtained.
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公开(公告)号：EP0005686B1
公开(公告)日：1982-02-03
申请号：EP79850041.9
申请日：1979-05-15
CPC分类号： B24B23/02 , F01C13/02 , F16C19/545 , F16C27/066
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公开(公告)号：EP0037804A2
公开(公告)日：1981-10-14
申请号：EP81850051.4
申请日：1981-03-23
IPC分类号： E21B17/00
CPC分类号： E21B21/00 , B25D17/084 , E21B17/18 , Y10S173/02
摘要： Rock drilling apparatus including a pressure fluid driven rock drilling machine (10) and a drill unit (11). Said unit (11) including a drill rod (18), a drill bit (16) and a tube (20) surrounding said drill rod (18). Said drill rod (18) having a collar (22) in front of a shank (21), said collar (22) maintaining said tube (20) rotatably therebetween and between said drill bit (16). Said rock drilling machine (10) including coupling device (46; 57), a socket means (42) and a rotation chuck (44) for receiving and holding said tube (20) and shank (21) connected tothe machine (10),thetube (20) being radially spaced around said drill rod (18) and non-rotatably connected to said socket means (42).
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公开(公告)号：EP0004832A3
公开(公告)日：1979-10-31
申请号：EP79850016
申请日：1979-03-27
发明人： Dick, Helmut
IPC分类号： E21D09/10
摘要： A tunnelling machine has a swing unit (31) that is swingable about a horizontal axis (I). The swing unit has a head (50) that rotates about an axis (II) that is transverse to said horizontal axis and passes the horizontal at a distance below the horizontal axis. The head is equipped with a plurality of disc-cutters (53-58, 63) that are arranged to have their cutting edges on an imaginary sphere with a radius of about the same length as the swing radius. Upon simultaneous upward swinging of the swing unit and rotation of the head, the cutters cut both when on the leading side of the head and when on the trailing side. No cutting occurs during the return swing stroke. When the swing unit has been returned, the machine is advanced a step which is somewhat larger than the distance between the two axes, and another upward cutting stroke can be effected.
摘要翻译： 隧道机具有围绕水平轴线（I）摆动的摆动单元（31）。 摆动单元具有围绕横向于所述水平轴线的轴线（II）旋转的头部（50），并且在水平轴线之下的距离处穿过水平面。 头部配备有多个盘形切割器（53-58,63），其被设置成将其切割边缘设置在具有与摆动半径大致相同长度的半径的假想球体上。 当同时向上摆动摆动单元和头部旋转时，切割器在头部的前侧和当在后侧时都切割。 在返回摆动行程期间不发生切割。 当摆动单元已经返回时，机器前进一个比两个轴之间的距离稍大的台阶，并且可以实现另一个向上的切割行程。
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119.发明公开
公开(公告)号：EP0004832A2
公开(公告)日：1979-10-17
申请号：EP79850016.1
申请日：1979-03-27
发明人： Dick, Helmut
IPC分类号： E21D9/10
摘要： A tunnelling machine has a swing unit (31) that is swingable about a horizontal axis (I). The swing unit has a head (50) that rotates about an axis (II) that is transverse to said horizontal axis and passes the horizontal at a distance below the horizontal axis. The head is equipped with a plurality of disc-cutters (53-58, 63) that are arranged to have their cutting edges on an imaginary sphere with a radius of about the same length as the swing radius. Upon simultaneous upward swinging of the swing unit and rotation of the head, the cutters cut both when on the leading side of the head and when on the trailing side. No cutting occurs during the return swing stroke. When the swing unit has been returned, the machine is advanced a step which is somewhat larger than the distance between the two axes, and another upward cutting stroke can be effected.
摘要翻译： 甲隧道钻巷机具有摆动单元（31），即围绕水平轴线（I）能够摆动。 摆动单元具有头部（50）做了绕轴线上（II）那样是横向于所述水平轴，并在水平轴之下的距离通过水平。 的头配有圆盘刀的多个（53-58，63）并布置成具有它们的切割边到假想球体具有约相同的长度摆动半径的半径。 在摆动单元和所述头的旋转的同时向上摆动，切割器切断两者的头部的前侧，并且当在尾随侧时。 回摆动行程中不发生切割。 当摆动部已被返回，机器前进步骤的所有比所述两轴之间的距离稍大，另一向上切割行程可以实现。
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