摘要:
According to one aspect of the invention hydraulic pressure pulses are created in a rock drill machine utilizing a rod (7, 7a, 7b) made of a magnetostrictive material arranged in one or more actuators (5, 5a, 5b), which exposes an impulse piston (3) in a pulse cylinder (1) to said hydraulic pressure pulses, whereby mechanical pressure pulses being transferred to a drill steel of the rock drill machine are generated in the impulse piston (3).
摘要:
A method and an arrangement for drilling a hole in a rock (6), wherein a preliminary hole is drilled first, whereafter the drilling is interrupted. Joints between a drill boom (2) and a feeding beam (5) and/or the feeding beam (5) in its longitudinal direction are released so as to move freely in order that the boom (2) and the feeding beam (5) would take a substantially strainless position and the angles (.alpha., .beta.) of the joints and the position of the feeding beam (5) and the drill rod are measured. Thereafter the direction and distance from the preliminary hole (C) to the terminal point (B) of the originally designed hole is computed, and the drilling of the hole is completed.
摘要:
An impulse generator (1) for a percussive tool includes a chamber (3) for receiving a liquid volume and an impulse piston (4) which is arranged for transferring pressure pulses in the liquid volume into stress wave pulses in the tool. The chamber (3) is adapted with respect to its shape such that it forms a resonance chamber for liquid in the liquid volume for forming at least one pressure antinode (11,15,17) inside the chamber. The invention also concerns a method and a hydraulic impulse tool.
摘要:
An impulse generator (1) for a percussive tool includes a chamber (3) for receiving a liquid volume and an impulse piston (4) which is arranged for transferring pressure pulses in the liquid volume into stress wave pulses in the tool. The chamber (3) is adapted with respect to its shape such that it forms a resonance chamber for liquid in the liquid volume for forming at least one pressure antinode (11,15,17) inside the chamber. The invention also concerns a method and a hydraulic impulse tool.
摘要:
A drill rod suitable for a hydraulic drilling apparatus, at the drilling end (I) of which there is a drilling device (1), that includes at least drilling equipment (2) and hammering equipment (5) as well as preferably flushing equipment (10) also, to drill a hole by use of the drilling equipment (2) by a feeding motion along the longitudinal axis (s) of the drilling device (1) and by a rotational motion (w) around the longitudinal axis (s) as well as by a to-and-from or a like hammering motion (t). The drilling device (1) has jointing equipment (3) for fastening of a drill rod (4) preferably in a removable way to increase the drilling depth of the drilling apparatus. The drill rod (4) consists of a casing structure (8) equipped with corresponding jointing equipment (3) and at least partly inside of which there has been arranged a flow arrangement (7) for leading of hydraulic fluid and/or flushing medium and a coupling arrangement (6) for connecting of the flow arrangement (7) of the drill rod (4) with a corresponding flow arrangement (7) in the drilling device (1) and/or in another drill rod (4) and/or at the driving end (II) of the drilling apparatus. The drill rod (4) is arranged at least partly dismountable to enable its maintenance, by connecting at least part of the part entireties belonging to the same, such as of the casing structure (8), the jointing equipment (3), the coupling equipment (6) and/or the flow arrangement (7) by use of fastening equipment (9) removable with other parts of the drill rod (4).
摘要:
A method of using an organic, oil-based pressurized medium derived from natural biological metabolism for the percussion device in a drilling device of a drilling apparatus having a drilling bit at its one end for drilling a hole in the ground comprises: a) causing the organic oil-based pressurized medium derived from natural biological metabolism to flow in the drilling hole through at least the drilling device and possibly one or several drill rods, when joined to the drilling device for increasing the drilling depth of the drilling device, b) driving the percussion device for generating the percussion movement by the organic oil-based pressurized medium derived from natural biological metabolism supplied through a first flow channel provided in the drilling device and the drill rod, c) removing drilling waste generated by the drilling bit at the end of the drilling device by a scavenging agent supplied through a second flow channel provided in connection with the drilling device and the drill rod, and d) supporting the drilling apparatus with a support frame being at least indirectly supported by the ground.
摘要:
A bearing arrangement for a feeding device for a drilling machine, comprising a feeding beam (1) provided with longitudinal guides (6), a carriage supporting a drilling machine (3) and provided with guide surfaces in slidable engagement with the guides, and displacing means for displacement of the carriage along the guides. At least one guide surfce (5a) of the carriage is formed by a spacer (5) supported by the carriage. For automatical eliminatin of the clearance between the feeding beam and the carriage, the spacer is pressed against a wedging surface (8) provided on the carriage and extending essentially in parallel with the guide. The carriage is provided by means (9) for displacement of the spacer in between the guide surface (6a) of the guide of the feeding beam and the wedging surface (8) of the carriage so that the growth of clearance caused by wearing of the spacer is avoided as the wearing increases.