| Document |
Document Title |
|
JP3824112B2 |
To reduce damage by smoothly buffering energy reflected from a shunk rod. A rock drill has a hammering mechanism and a chuck driver bush 13 for transmitting thrust to a shunk rod 2. In such a rock drill, a front damping piston 4 having t...
|
|
JP3821479B2 |
A rock drilling machine has a housing (1), a hammer piston (2) movable to-and-fro in the housing, a drilling tool (3), and a guide (4) for the drilling tool. The guide (4) consists at the surface against the drilling tool (3) of polyethy...
|
|
JP3803147B2 |
To prevent damage to consumables by controlling the impact pressure of an impact mechanism so that it is small when the thrust of a feed mechanism is so small that the force of impact is not sufficiently utilized in drilling bedrock, and...
|
|
JP3795519B2 |
An hydraulically driven percussive hammer for use with down-the-hole percussive hammer drilling, the hammer having a piston and liner combination which provides for multiple stages where there are successive effective piston drive areas ...
|
|
JP3793904B2 |
To decrease a working oil quantity of a striking mechanism and reduce an energy consumption amount at the time when light striking is performed at a weak point even if striking power is small. A rock drill is provided with a striking mec...
|
|
JP2006515920A |
This invention is directed to an apparatus for controlling the discharge of pressurized fluids from the outlet of a pressurized vessel, and particularly directed to multiple fluid dispensing check valve devices within the vessel for stor...
|
|
JP3783798B2 |
To facilitate the movement control of the piston of a percussion device and obtain a large percussion force. The percussion device is provided with the stator of a linear motor in a cylinder 6 and provided with a reciprocal percussion de...
|
|
JP2005532491A |
Disclosed herein are methods, apparatus and systems for automating or metering fluid recovered at a well. According to one example, a system is described for automating the fluid recovery of oil wells using a pump jack or oil extractor. ...
|
|
JP2005530853A |
A chloride free amphoteric surfactant obtained by reacting an amine with a carbonyl compound, the amphoteric surfactant being particularly useful as a foamer for treating gas wells to enhance production.
|
|
JP3673282B2 |
A method for adjusting percussion pressure and a drilling machine. In the method the percussion power of a drilling machine is adjusted by moving a shank in the longitudinal direction of the drilling machine forwards when a smaller percu...
|
|
JP2005515328A |
A rotary seal assembly for a rotary support table for use in drilling systems and the like to provide pressurized fluid to a rotary slip assembly disposed within the rotary support table is provided. The rotary seal assembly is designed ...
|
|
JP2005133381A |
To provide a ground drilling device capable of two functions of a percussion function and a vibration function without making device large and automatically switching over in accordance with the ground condition for drilling objects.The ...
|
|
JP3647081B2 |
PURPOSE: To make effective use of the striking force of a striking mechanism using a simple structure so as to increase drilling speed by engaging an outer- periphery bit with an inner-periphery bit along the direction of an axis, and tr...
|
|
JP2005036954A |
To supply accumulated air pressure sufficiently to a work machine without causing pressure reduction even when distance between an air compressor 1 and the work machine connected to each other by a hose 2 is long, the work machine is dri...
|
|
JP3588467B2 |
An in-hole rock drilling machine has a tubular housing (12) with a piston hammer (24) that is guided at its ends only. Its front portion is guided by a guide bushing (18) that takes support against a shoulder (13) in the housing and its ...
|
|
JP3570573B2 |
PURPOSE: To reduce vibrations and noises, to lengthen lifetime and to inhibit the abrasion wear of an excavation bit. CONSTITUTION: A damper 16 is installed between a feed means 13 and a rotational driving means 14, and the vibrations of...
|
|
JP2004225470A |
To prevent drilled soil and sand to be removed from escaping, and rapidly remove soil and sand sticking to the inside of a drilling blade.A percussion drilling apparatus comprises a drilling blade 4A arranged so as to narrow the mounting...
|
|
JP2004204603A |
To provide a rock drill head excellent in versatility capable of forming an uneven step section in an internal wall surface of a bore with excellent working efficiency and irrespective of a formation state of the bore and a rock drill de...
|
|
JP3488905B2 |
To adequately respond even when there is any change in lithology or the like during drilling operation of a hydraulic rock drill for drilling rock base. Provided are a electromagnetic proportional discharge and pressure control valve V1 ...
|
|
JP3483015B2 |
To improve striking efficiency by cushioning reflected energy from a shank rod with oil pressure so as to reduce damage, and advancing a bit so as to be in contact with a rock-bed to strike even in the case of a rock drill body failing t...
|
|
JP3483018B2 |
To greatly prolong the use life of a consumable part by lowering the impact pressure when a bit is not sufficiently made into close contact with a bedrock during drilling so as to prevent occurrence of extra shock waves. A drilling devic...
|
|
JP3470188B2 |
In an impact drilling apparatus, an impact hammer is provided that includes a body portion and a piston head on the body portion. The piston head has a larger outer periphery than the body portion. The body portion and the piston head ha...
|
|
JP3468700B2 |
To provide a material for drilling a hole in natural ground, enabling to easily and rapidly drain water in the natural ground within a drilling area in front of the working face of a tunnel without using special machines, and to provide ...
|
|
JP3468701B2 |
To provide a material for drilling a hole in natural ground, capable of doubling its durability by enabling a stem to be used while being reversed in the direction of its axis. A material for drilling a hole in natural ground comprises r...
|
|
JP3461622B2 |
PURPOSE: To provide a large impact force by increasing the thrust of a piston under the application of a simple mechanism. CONSTITUTION: Regarding the percussion device equipped with a linear motor stator on a cylinder 2 and a reciprocat...
|
|
JP3449722B2 |
Boring apparatus for forming a generally horizontal underground passage in soil for a utility conduit or the like that includes a tool head with a base portion and a nose portion mounted on the base portion. The base portion is rotatable...
|
|
JP3450115B2 |
To drive impact mechanism, rotating mechanism and feed mechanism by one hydraulic pump and perform automatic control according to a drilling state by diverting and uniting oil pressure through a flow regulating valve, a pressure regulati...
|
|
JP3447108B2 |
PURPOSE: To easily control the rotation to improve the durability of a hydraulic rock drill and a rod, and to prevent an abnormal fastening of the screw of the rod. CONSTITUTION: As a hydraulic power source of the hydraulic motor 6 of a ...
|
|
JP3447149B2 |
PURPOSE: To improve boring capability and energy efficiency by using a variable displacement pump as a hydraulic pump and, then, pertinently distributing hydraulic pressure to each of percussion, rotation and feed mechanisms, depending o...
|
|
JP3447160B2 |
To prevent the reduction of the operating pressure when a rotary mechanism is independently operated. A driving high-pressure passage 11 is connected to a hydraulic pump 4, and a driving low-pressure passage 12 is connected to a tank 5. ...
|
|
JP3445701B2 |
To provide a drilling machine, in which a coupling sleeve is slipped off surely from a drilling rod after the execution of works. A shank rod 6 is engaged slidably to a driving shaft in a chuck 1 detachably in an unturned manner in the a...
|
|
JP3434068B2 |
PURPOSE: To discharge excavating rubbish in large quantities as much as possible without scattering them by carrying them by air discharged from a stroke crusher. CONSTITUTION: A main body part cover 9 and a tube seal 8 are arranged, and...
|
|
JP3434067B2 |
PURPOSE: To enhance workability by installing a grinder having a grinding cutter having a cemented carbide abrasive grain on an excavating tip surface, cutting an underground obstacle prior to excavation, and discharging a cut material b...
|
|
JP2003193782A |
To provide a coaxial speed increasing/decreasing machine for a rotary striking type boring machine capable of being externally attached to an existing rotary striking type boring machine without any special remodeling, for efficiently tr...
|
|
JP3422940B2 |
To provide a sheath pipe structure of a material for drilling a hole in natural ground, capable of minimizing a frictional force working between the material and the wall surface of a drilled hole during drilling, and securing sufficient...
|
|
JP2003148420A |
To efficiently cool an after cooler in a compressed air working machine for an outdoor working machine of a rock drill, a breaker or the like with a small compressor without a power generator.In this compressed air working machine for dr...
|
|
JP2003120253A |
To provide a noise eliminator for a rock drill capable of reducing exhaust noise of the rock drill and solving problems of pollution caused by lubricating oil included in the exhaust gas.Inside a chamber 11 for introducing the exhaust ga...
|
|
JP3393139B2 |
A hydraulic impact motor in the form of a water-driven in-hole rock drilling machine has a valve spool (40) that has two equally big and opposite directed control surfaces (A1 and A2). The valve has also a third control surface (A3) whic...
|
|
JP2003082689A |
To provide an execution method for a foundation of a steel pipe pile, which brings about good working efficiency and excellent portability, and facilitates the execution of work, even in a place, under tough locational conditions, such a...
|
|
JP3382667B2 |
Hammer device comprising a machine housing (1) with a hammer piston (2) movable to-and-fro. The movement to-and-fro of the hammer piston is controlled by a valve body (6) movable to-and-fro in the machine housing. In order to speed up th...
|
|
JP2003013684A |
To provide a percussion device with a silencer, by which noise pollution and an adverse effect on a worker are relaxed effectively.In the silencer for the percussion device, a hammer 17 reciprocated in a fixed stroke and a shank rod 3 re...
|
|
JP2003001126A |
To provide a new and improved protection cover for a chopper.A method for manufacturing a protection cove for a chopper and choppers equipped with such a protection cover are provided. The protection cover (8) is practically composed of ...
|
|
JP3352234B2 |
Fluid driven down-the-hole drilling machine. The hammer piston (2) of the down-the-hole drilling machine is adjacent to its front end provided with a cylindrical part (6). The drill bit (3) is provided with a first impact surface (41) wh...
|
|
JP2002322888A |
To perform excavation or soil investigation of a stratum of a prescribed position without using water in an inner tube, and to perform the excavation or the soil investigation in low noise by performing the excavation by operation of onl...
|
|
JP3335211B2 |
Rock drilling device comprising a backhammer unit (10) in which a hammer piston (9) is movable to-and-fro for automatically exposing a tube string (4) to impacts in a direction away from a drill bit (8) in the tube string. The backhammer...
|
|
JP2002295160A |
To provide a drilling apparatus for a ground drilling machine, which is low in noise generation, simple in structure, and inexpensive.The drilling apparatus is provided for the drilling machine having a traveling frame which is protrudab...
|
|
JP2002266008A |
To provide a hydraulic tap hole opening machine which controls the tap hole opening work, or the like, of a blast furnace, or the like, of a steelworks in accordance with the rotating pressure, blow pressure and feeding pressure and is c...
|
|
JP2002242573A |
To provide a ground drilling machine which reduces labor and time for drilling work, brings about a reduction in construction cost without requiring an increase in the number of personnel, dispenses with an initial cost, for example, for...
|
|
JP3286728B2 |
To drill a hole in a rock bed efficiently and economically by using a drilling rod having the predetermined length, drilling prepared holes having the predetermined vertical depth at a proper interval without adding and joining the drill...
|
|
JP3270414B2 |
To provide the specifying method of the position of drilling, cost of which is reduced and by which the positions of drilling of a plurality of pits drilled to a baserock can be specified easily without having an effect on the execution ...
|
