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Patent Searching and Data


Matches 601 - 650 out of 1,626

Document Document Title
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...  
JP3570754B2  
JP3568708B2  
JP3540462B2
To remove the dust near an excavating device and improve the working environment by providing a sealing mechanism for sealing the inner part of a casing tube from the outside and a duct for connecting the tube inner part to a dust collec...  
JP3535104B2
To obtain driving hydraulic device driving a construction device for preventing the damage of the device or the occurrence of a noise. The construction device driving hydraulic device is so constituted that a hydraulic oil is supplied an...  
JP3519041B2
To provide an earth drill enabling execution of excavation without lifting of a boom even when the thrust-in force of a thrustor cylinder is the maximum. A boom 2 is erected on a base machine 1 by holding it in stretch from the rear by a...  
JP2004092294A
To provide a drilling method and device therefor proper to use for drilling a ground such as a clay layer, a silt layer difficult to conduct a drilling with a conventional drilling device.A bit, to which cuttings inflow port, in which cu...  
JP3505711B2
To facilitate the disconnecting/connecting work of a hydraulic hose without generating an internal pressure in hydraulic thruster cylinders by fixing a Kelly drive when mounting a bucket drive device on a frame. A fixing metal fixture 15...  
JP2004070613A
To provide a method for simulating, plotting, and verifying the creation of a graphic by a creating means for deciding the various origins of a graphic so that a plurality of adjacent graphics expressed with closed curves can be provided...  
JP3502922B2
To provide a rotary table with a lock release confirmation device for easily recognizing from the outside whether lock is released or not when releasing lock between a kelly-bar 3 and the rotary table 6 for driving the kelly-bar 3, in un...  
JP3502360B2
To provide an earth drill making it possible to easily select either earth drill work or hammer grab work, depending on whether the ground is weak or hard, for the discharge of sediment in a easing used in all-casing construction method....  
JP2004060401A
To facilitate drilling control of a rock drill to reduce a worker's fatigue by detecting the presence and properties of cuttings discharged in drilling more positively at a low cost.This cuttings detector is composed of powdery and granu...  
JP2004052294A
To reduce labor of work such as withdrawal of an all directional revolving excavator or carrying in of an earth drill as a heavy machine.An excavating machine 1 is provided with an all directional revolving excavator 2 and an earth drill...  
JP2004036246A
To provide an excavating method in which excavation/soil improvement throughout a prescribed cross section is performed without the occurrence of unexcavated sections by excavating a plurality of noncircular cross sections.In this excava...  
JP3489976B2
To heighten connecting strength and cope with unequal settlement of an outrigger and the relative position change of a tubing device and a base machine during excavating work by connecting the tubing device and the base machine with four...  
JP3488906B2
To automatically cope with rock qualities even if they vary, by changing over the flow rate of a rotary device according as the differential pressure of a percussion device, changing over the flow rate of a feeding device according as th...  
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 ...  
JP3484597B2
To finish irregularities of a slope roughly made by blasting in a flat surface. This slope rock excavating machine is installed on a working arm of a construction machine of a backhoe, etc. A lateral drum drilling rig 240 is installed on...  
JP3479700B2
PURPOSE: To provide a small sized strong casing auger device which can freely select drilling due to the dead weight of a casing auger or forced drilling, and can efficiently remove underground obstacles. CONSTITUTION: An intermediate el...  
JP2003336472A
To perform a highly efficient and low-cost excavation work dispensing with a large-scale crane truck necessary for installing and supporting a drill, its carry-in, its installation, and its carry-out, and saving a space in an excavator a...  
JP3467673B2
To finish irregularities of a slope roughly made by blasting in a flat surface. This slope rock excavating machine is installed on a working arm of a construction machinery such as a backhoe, etc., through a mounting bracket 110. A drill...  
JP3466380B2
To conduct auxiliary suspension works smoothly after excavation works, and to bear thrust-up force at the time of excavation and perform accurate excavation. In this earth drill machine, a kelly bar 3 is lowered while being rotated and d...  
JP2003314178A
To provide a sturdy and safe mounting structure preventing a casing drive adapter mounted on a rotary table from dropping due to breakage of a bolt 11.In a mounting structure of the rotary table and the casing drive adapter in an earth d...  
JP3461479B2
To provide a ground excavator improving the efficiency of the excavation left work without making two actions with the right land and preventing an erroneous action. This ground excavator is provided with a kelly bar winding/ unwinding l...  
JP3457238B2
To provide a drill mechanism for a blasting rock drill capable of safely conducting the work and sharply reducing the cost. This drill mechanism for the blasting rock drill is provided with a rod base 16 moved and driven in the longitudi...  
JP3454831B2
PCT No. PCT/FI95/00678 Sec. 371 Date Aug. 12, 1997 Sec. 102(e) Date Aug. 12, 1997 PCT Filed Dec. 13, 1995 PCT Pub. No. WO96/18798 PCT Pub. Date Jun. 20, 1996A method to drill a hole in the soil by a bit assembly and a bit assembly compri...  
JP3450530B2
To provide a downward boring device suitable for boring a bridge pier constructing shaft or a bridge pier reinforcing hole by suspending a guide cell with an automobile crane, and vertically movably fitting a rock drill on its surface si...  
JP3452084B2  
JP3446987B2
To improve the effect of cut-off and work efficiency. An intervening member 3 having a projection 3a mounting to a specific position of an excavated hole member formed by connecting a plurality of unit excavated hole members is connected...  
JP3447169B2
To dispense with an exclusive hydraulic motor for rotation and driving, and to simplify the structure. This rod turning device 1 has a plurality of rear rollers 19C, 19L, 19R holding a shank rod 2, a plurality of front rollers holding a ...  
JP3443705B2
PURPOSE: To improve working efficiency by gearing two two-speed type hydraulic motors with a ring gear for driving an auger screw, and regulating the feed quantity of pressure oil to each hydraulic motor to switch it to three high, middl...  
JP3432574B2
PURPOSE: To facilitate analysis a lithology data by way of saving labour of formation of the lithology data by providing a detection means to detect each actuation of a machine drill and a rod changer of a drilling device and a drilling ...  
JP3434066B2
PURPOSE: To uniformly transfer the pressing force of respective gripper inner cylinders to a casing tube and smoothly carry out excavation works and increase the working efficiency. CONSTITUTION: Cylinders 11 of respective gripper device...  
JP3424773B2
PURPOSE: To shorten construction period and secure the safety of the work by automatically fit or remove a drill shaft with a machine. CONSTITUTION: Drill shafts 12 are automatically fitted or removed in sequence at the rear section of a...  
JP3420115B2
To provide a method and device for excavating a vertical shaft that can easily collect and discharge the excavated soil for enhanced efficiency of excavation by avoiding the use of a hollow pipe that penetrates the ground to be excavated...  
JP2003148611A
To constitute a drive circuit for hydraulic motor so that the rotating speed range of an auger screw is increased.As a pair of hydraulic motors 23 and 24 for driving the auger screw 12, multi-stroke type motors are used, so that the moto...  
JP3400645B2
To press in a hollow casing always vertically regardless of the attitude of a traveling truck and rapidly absorb reaction generated at the time of pressing in. This shaft excavating device is so constituted that a press-in head 2 for pre...  
JP2003094430A
To prevent the generation of resistance caused by the friction of the peripheral surface of the tube of a core bit and the wall surface of the hole of the tube.The core bit 13 is constituted of the cylindrical tube 14 having a through-ho...  
JP2003089110A
To provide an excavator capable of excavating efficiently a groove or a slit H on a material to be excavated and to provide an excavating process.The excavator 1 is supported with a freely movable transfer stand 120 along a rail 110 prov...  
JP3388738B2
PCT No. PCT/GB92/01653 Sec. 371 Date Apr. 13, 1993 Sec. 102(e) Date Apr. 13, 1993 PCT Filed Sep. 10, 1992 PCT Pub. No. WO93/05360 PCT Pub. Date Mar. 18, 1993.A system for calibrating a rotary table (10) includes an indexing table (20) (w...  
JP3389184B2
To compactly constitute a lubricating mechanism for lubricating a change gear provided in an excavating apparatus driving device for a ground excavator by means of an appropriate lubricant and to obtain sufficient efficiency of a space. ...  
JP3390512B2
PURPOSE: To secure a necessary torque for excavation without over loading true driving motor of an excavator and increase the revolution as high as possible to carry out efficient excavation. CONSTITUTION: A driving controller of an exca...  
JP2003082664A
To provide penetration equipment for steel pipe pile and penetration method capable of improving the efficiency of penetration work for steel pipe pile and a vertical accuracy without increasing the cost of the equipment.In a steel pipe ...  
JP2003074280A
To provide a reduced noise type vibrating drill that can provide sufficient noise reducing effect without cost increase, taking no special manufacturing trouble, and moreover without enlarging a machine or impairing usability.In this dri...  
JP3382641B2
Rock drilling device comprising a drilling tool with a set of tubes (7) and a set of rods (9) arranged therein. The drilling tool comprises a number of sections which each comprises a tube (7), a rod (9) and an end piece (11). The rod is...  
JP2003027877A
To provide a method for rotatively press-fitting a cylindrical casing by a shaft excavator, which can carry out quick excavation of a shaft.The shaft excavator includes a machine body 1, and functions to grasp the cylindrical casing 100 ...  
JP2003013683A
To provide an excavation working device preventing an intrusion of excavated materials to a device principal section.In the excavation working device in which a casing 100 passed in a revolution body 15 is held by inserting a plurality o...  
JP3363426B2
To provide a chuck device capable of easily detaching a chuck even when it is hard to detach due to firm clamping of a shaft by the chuck. This chuck device is composed of a chuck holder 41 with an external thread 46 formed at the outer ...  
JP3364187B2
To use one type of an excavator driving device supporting and rotatively driving a kelly bar at a low cost in a ground excavator selectively using combinations of an excavation bucket or an excavation auger and soil kelly bars according ...  
JP3355483B2  

Matches 601 - 650 out of 1,626