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WO/1981/003518A1 |
A vibration isolator device (10) is connected between a support member (72) and a percussion tool (14) having a distal work element (52) movable at a preselected vibratory rate. The vibration isolator device (10) includes a passive syste...
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WO/1981/001590A1 |
A pneumatic percussion machine comprises a casing (1) provided with a grip (2), a barrel (3) with a feeder (10) fixed to it and with a striker placed inside it, the barrel being movably mounted inside the casing in guides (4), and a pack...
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WO/1981/001182A1 |
A self pumping seal for a reciprocating member (12) provides cooling fluid to the reciprocating member (12) with degradation of an elastomeric seal (34) lessened by separating the elastomeric seal (34) from the higher temperatures of the...
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WO/1981/000427A1 |
A drilling rig (10) including a mast assembly (12) supported on a support frame (11), and a tool (24) suspended by a cable (23) from the mast assembly (12). The tool (24) is caused to reciprocate by a rotatable crank arm (28) carrying a ...
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WO/1980/001665A1 |
A pneumatic percussion machine comprises a barrel (1) with an exhaust opening (9) and a striker (6), movable in the barrel (1) and dividing the barrel's hollow into an idle stroke chamber (8) and a working stroke chamber (7), an air-dist...
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WO/1980/001666A1 |
In a cylinder (52) contained in an enveloppe (11), a striker piston (18) is arranged so that it may move in two directions by periodical thrust of a pressure fluid. In order to avoid transmission of the shock reaction to the enveloppe or...
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JP2024510378A |
Hydraulic striking device and method for controlling the working cycle of a striking piston. A rock drilling machine (1, 41) comprises a striking device (4) equipped with a reciprocating piston (9) for performing a work cycle (WC). This ...
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JP7445002B2 |
A self-locking threaded connection partially in a non locking engagement comprises a first and a second tubular component provided respectively with male and female threaded zone (3, 4) at their respective ends. First portions (11, 12) o...
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JP2024507341A |
A shank adapter forming part of a boring assembly, the adapter comprising: a body extending axially between a first end and a second end; a radially projecting male bayonet portion disposed at the second end having a non-threaded shank d...
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JP2024504128A |
The fracturing drill head (100) includes a drill head body (102) having a major surface (104) substantially facing a primary drilling direction (106) along a longitudinal axis thereof. . A liquid inlet may be on the drill head body (102)...
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JP2023548003A |
The present disclosure includes a piston barrel including at least one discharge port configured to receive a single flow of drilling fluid including drilling mud; and a piston barrel positioned within the piston barrel and actuated by a...
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JP2023542278A |
The present invention relates to a flap valve for a percussion drill tool. The valve includes a first side surface capable of engaging a plane of the element of the percussion drilling tool to alternately close first and second fluid flo...
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JP2023529438A |
The present invention relates to a computer-implemented diagnostic method and system for diagnosing the functionality of at least one accumulator in a hydraulic circuit in an impact rock drilling rig. The hydraulic circuit provides hydra...
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JP2023528339A |
A piston guide element, a rock drill, and a method for supporting a front end portion of a percussion piston of a rock drill. The element (20) is provided with a braking recess (16) at its rear end (24). The element further comprises at ...
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JP2023520422A |
The present invention relates to a fluid operated percussion drill tool (1). The tool (1) has a substantially cylindrical wall (3) and comprises an outerwear sleeve (2) having an inner surface (4) and an outer surface (5). The tool also ...
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JP2023519696A |
A rotary percussion hydraulic drill (2) comprises a body (3), a shank (13) having female and male coupling splines, an impact piston (5) configured to strike the shank, and driving the shank to rotate. and a front abutment surface (23) c...
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JP2023512003A |
Pressure accumulator, rock drill and pressure energy storage method. The accumulator (8) comprises a casing (10) and an elastic membrane (16) disposed within the casing. A membrane divides the interior space of the casing into two separa...
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JP2022153091A |
To provide a cover, an installation device, an excavation device, and a noise reduction method for a down-the-hole excavation device or the installation device allowing noise generated outside of a device to be reduced upon working.An in...
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JP7085673B2 |
To provide a rock drilling machine which can correspond to increase of power density.This rock drilling machine 10 comprises a rotation transmission part having: a shunk rod 40 on an outer face of which an outer diameter square spline 52...
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JP2022528399A |
This specification discloses an excavation process control method for a striking excavator having a process of collecting data according to a feeding force and a biting depth. The control method further includes a step of determining a s...
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JP2022078960A |
To achieve more efficient striking or vibration behavior.The invention relates to a device and a method for generating striking pulses or vibrations for a construction machine, which are accompanied with: a housing; a piston which is rev...
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JP7059350B2 |
The present invention relates to a hydraulic percussion apparatus that is mounted on construction equipment such as an excavator and breaks solid rocks in the grounds using a rod that is hit by a piston. Particularly, the present inventi...
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JP7041454B2 |
To exert the damper action properly and improve the idle impact condition when a dual damper mechanism is applied to a front and rear chamber high-low pressure switching type hydraulic impact mechanism.A drilling control device 100 compr...
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JP2021169758A |
To provide a device and a method for monitoring a hydraulic rock crusher and its operation to solve the problem that known surveillance systems have drawbacks, which systems are required for monitoring in order to control the machines pr...
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JP6906208B2 |
To provide a dumper hydraulic circuit for making it possible to control a damper pressure with a simple configuration by using only a hydraulic device that is relatively easily available without performing electro-hydraulic conversion, a...
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JP6881970B2 |
To provide a rock drilling machine which can correspond to increase of power density.This rock drilling machine 10 comprises a rotation transmission part having: a shunk rod 40 on an outer face of which an outer diameter square spline 52...
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JP3230664U |
To provide an excavator capable of efficiently excavating the ground by giving a plurality of hits to the ground by a single vertical movement of the excavator and suppressing labor of an operator, and a support structure for supporting ...
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JP6713778B2 |
To provide a hydraulic striking device which has comparatively high stability of action for controlling a stroke of a piston.A hydraulic striking device includes: a cylinder 100 which has a short stroke port SP, a long stroke port LP, an...
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JP6676104B2 |
A device and a method for generating percussive pulses or vibrations for a construction machine, in which a piston is reversibly reciprocated in a working space in a housing between a first reversal point and a second reversal point, whe...
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JP6588211B2 |
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JP6571489B2 |
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JP6496153B2 |
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JP6495672B2 |
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JP6481920B2 |
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JP6442036B1 |
To reduce the weight of an excavating device. An excavation device 1 according to an embodiment of the present invention includes a drive unit 20 that generates power, a housing 10 to which an excavation unit 11 that excavates using powe...
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JP6429098B2 |
There is provided an excavation assembly for use in an excavator, wherein the excavation assembly is removably coupled to an arm at a pair of spaced shaft-receiving portions defined therein, wherein the excavation assembly performs an ex...
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JP6426442B2 |
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JP6276457B1 |
[Subject] A piece of crush is prevented from dispersing toward a cabin of construction machinery provided with a breaker. [Means for Solution] Arm 2 extended from cabin 6, and breaker 3 attached to arm 2, In mounting structure of crush f...
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JP6271577B2 |
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JP6232532B1 |
[Subject] A well-sinking device of a manual type which can choose an excavating means arbitrarily according to a worker's physical strength or hardness of the soil foundation, and offer of a well-sinking method which uses it are aimed at...
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JP6132763B2 |
Device for a hydraulic hammer (1), in which there is a hydraulic impact system and a work point (2) for performing work, for preventing damage caused by ricocheting pieces. The device is formed of a shield (6) that can be lowered to the ...
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JP2017030105A |
To provide a tool positioning tool of a work machine which can improve safety of an operator, prevent damage of shoes and be inexpensively manufactured while preventing a positional deviation of a tool and enhancing efficiency of a borin...
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JP6024966B2 |
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JP6008749B2 |
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JP2016164358A |
To provide a hard ground excavation method and a rope guide device for eccentric rock crushing devise that allow an eccentric rock crushing device to be fitted and removed easily, curtail hard ground excavation work time significantly, a...
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JP5987487B2 |
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JP5952271B2 |
A downhole assembly able to generate a vibrational output reliant upon a fluid feed drive to cause relative rotation extending magnetic arrays and thereby a relative longitudinal vibration causing reciprocation.
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JP5938823B2 |
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JP5892853B2 |
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JP5876049B2 |
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