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公开(公告)号：US12049813B2
公开(公告)日：2024-07-30
申请号：US17593992
申请日：2020-03-18
CPC分类号： E21B44/02 , E21B1/00 , E21B10/36 , G08B21/182
摘要： The drilling machine comprises a control unit and at least one sensor. The drilling machine further comprises a percussive element and a tool, wherein an end of the tool comprises a drill bit configured to strike rock. The percussive element is configured to impact the tool and the tool is configured to transfer impulse energy generated by the percussive element to the drill bit. The method during drilling comprises collecting data depending on force fed into the rock and indentation depth into the rock at an impact of the percussive element. The method further comprises determining a percussion procedure based on the collected data, and determining a deviation between the percussion procedure and a reference percussion procedure. The method further comprises adjusting one or more drilling parameters related to the drilling process based on the deviation.
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公开(公告)号：US20240159115A1
公开(公告)日：2024-05-16
申请号：US18551208
申请日：2022-03-10
发明人： Gustav MÖRTZELL , Thomas ADOLFSSON
IPC分类号： E21B19/16
CPC分类号： E21B19/166
摘要： The invention relates to a method for determining the state of a joint joining a first and a second drill string component. A drill rig includes a rotation unit for rotating the drill string and means for determining a representation of a torque applied by the rotation unit. A joint loosening mechanism distinct from the rotation unit apply a joint loosening torque acting on the drill string when loosening a joint. The method includes applying a torque in a joint loosening direction by means of the rotation unit, and applying a joint loosening torque acting on the drill string by means of the joint loosening mechanism.
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公开(公告)号：US20240102377A1
公开(公告)日：2024-03-28
申请号：US18257137
申请日：2021-11-30
发明人： Mattias GÖTHBERG , Samuel ENBLOM
IPC分类号： E21B47/007 , E21B1/02
CPC分类号： E21B47/007 , E21B1/02
摘要： The present invention relates to a method for determining state of at least one joint of a drill string of a drill rig, the drill rig including a percussion device for inducing shock waves into the drill string, and a sensor for sensing stress waves in the drill string caused by impacts of the percussive device, the method comprising, when a stress wave is induced into the drill string by the percussive device: determining a representation of the incident stress wave caused by the percussive device; determining a representation of a reflected wave representing a reflection of the incident stress; estimating a stiffness of the at least one joint by estimating a force exerted on the at least one joint by the incident wave.
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公开(公告)号：US20220341323A1
公开(公告)日：2022-10-27
申请号：US17634448
申请日：2020-08-17
发明人： Hans KERFSTEDT
IPC分类号： E21D9/10
摘要： A mining machine (102) for rock excavation, comprising: a rotatable cutting head (104) having cutting elements (108); a holder (110) for holding the cutting head (104); a movable thrust unit (112) attached to the holder (110); a machine body (114) attached to the thrust unit (112); a thrust apparatus (118) for moving the thrust unit (112) between retracted and extended positions and for pushing the thrust unit (112) forward, thereby pushing the cutting elements (108) into a rock formation; a hydraulic pump (122); a hydraulic consumer (125); and a hydraulic line system (126) for connecting the hydraulic pump (122) to the hydraulic consumer (125). The hydraulic line system (126) comprises first hydraulic lines (126a) attached to the machine body (114), second hydraulic lines (126b) attached to the thrust unit (112), and two telescopic hydraulic line units (128). Each telescopic hydraulic line unit (128) connects one (126a) of the first hydraulic lines (126a) to one (126b) of the second hydraulic lines (126b). The telescopic hydraulic line unit (128) is retracted and extended with the movement of the thrust unit (112).
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公开(公告)号：US11448070B2
公开(公告)日：2022-09-20
申请号：US17058720
申请日：2019-05-27
IPC分类号： E21D20/00
摘要： A rig adapted for rock bolting comprising a feeding magazine is provided. The feeding magazine comprises a holding structure for bolts and is arranged in conjunction with a rock reinforcement unit. The rig further comprises a feeding device that is arranged to provide the rock reinforcement unit with bolts from the feeding magazine. The rig further comprises a loading magazine comprising a holding structure for bolts, as well as a, relative to the feeding magazine and the loading magazine, moveable picking device arranged to move bolts that are located in the loading magazine such that they are accessible to the feeding device.
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公开(公告)号：US10392877B2
公开(公告)日：2019-08-27
申请号：US15306274
申请日：2015-04-22
发明人： Jan Hanna , Martin Forsberg , Karolina Årdh
摘要： A chuck for a drill head of a rotation rock drilling rig, wherein a plurality of jaws are equally angularly distributed around a grip position axis, wherein the jaws co-operate with actuator means for radial movements of the jaws, and wherein the chuck includes urging means being arranged for influencing the jaws into the release position. The urging means is a partially annular jaw spring surrounding said axis and having two spring ends adjacent to each other. The jaws together form an inside seat for the jaw spring and the jaw spring is arranged for fixing engagement with one of the jaws. The invention also relates to a drill head, a rig and a jaw spring.
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公开(公告)号：US20240344402A1
公开(公告)日：2024-10-17
申请号：US18574740
申请日：2022-05-16
发明人： Harald MERKEL , Erik JAKOBSSON
IPC分类号： E21B7/15
CPC分类号： E21B7/15
摘要： A pulsed power drilling tool configured for passing a pulsed electrical current through a mineral substrate to break the mineral substrate, the drilling tool including: a pulsed power generator for generating high voltage current pulses, a drill head including at least one pair of a first electrode and a second electrode, the first electrode including a first solid electrode portion and the second electrode including a second solid electrode portion, the first and second solid electrode portions being galvanically connectable to the pulsed power generator, and at least one ionization device configured for generating at least one ionized fluid volume extending at least from the first solid electrode portion to a surface of the mineral substrate, to allow a high voltage current pulse to pass between the first solid electrode portion and the second solid electrode portion via the at least one ionized fluid volume and the mineral substrate.
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8.发明公开公开(公告)号：US20240076978A1
公开(公告)日：2024-03-07
申请号：US18257131
申请日：2021-11-30
摘要： The present invention relates to a method for optimising at least one drilling parameter during an ongoing drilling process, the drilling being carried out by a percussive drilling machine, the drilling machine being set to drill at an operating point, the operating point of the drilling being determined by a setting of a plurality of control parameters. The method includes determining a first plurality of drilling machine operating points, the operating points being set by the plurality of control parameters. Furthermore, percussive drilling is performed at each of the first plurality of operating points and at least one resulting drilling parameter is evaluated for each of the plurality of operating points. The method also includes determining a new plurality of drilling machine operating points.
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公开(公告)号：US11668067B2
公开(公告)日：2023-06-06
申请号：US16755243
申请日：2018-10-23
发明人： Stefan Nyqvist
CPC分类号： E02F3/3408 , E02F9/2203 , E21C41/00
摘要： A includes a control arm comprising a first link and a second link, a lift arm articulately connected to the first link by a first joint and a first actuating means articulately connected to the first link by the second joint. The second link and the lift arm are adapted to permit a pivotal connection with a loading means by a third joint and a fourth joint, wherein the lift arm is adapted to lift and lower the loading means and the first actuating means is adapted for actuating the control arm, by acting on the first link in at least a direction from the first actuating means, to achieve a rotational movement of the loading means around said fourth joint, when the loading means is connected to the control arm and to the lift arm. During action of the first actuating means on the first link in the direction from the first actuating means a decrease of a distance between the second joint and the third joint is achieved.
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公开(公告)号：US20230136108A1
公开(公告)日：2023-05-04
申请号：US17913221
申请日：2021-03-17
发明人： Christer ANDERSSON
摘要： The invention relates to a method performed by a control device for controlling a feeding distance and feeding rate in a rock drilling unit. The rock drilling unit comprising: a feeding device for feeding at least one drill rod and a drill bit in an axial direction; a rotating device; and a distance and rate measuring device comprising at least one rotational target wheel configured to be driven by the feeding device and at least one sensor device connected to the control device, the method comprising: controlling the feeding device to move in the axial direction; determining the feeding distance from a first position and the feeding rate of the feeding device from the rotational motion of the at least one rotational target wheel; and controlling the feeding device depending on the determined feeding distance and feeding rate of the feeding device.
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