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1. 发明专利

JPH10114971A CONTACT PREVENTIVE DEVICE FOR SLEWING HEAVY MACHINE 失效
公开(公告)号：JPH10114971A
公开(公告)日：1998-05-06
申请号：JP28613596
申请日：1996-10-08
申请人： KUMAGAI GUMI CO LTD
发明人： TOKIOKA MASATAKE , NAKANISHI TSUTOMU , KITAHARA SHIGEO , GOTO MAKOTO
IPC分类号： E02F9/08 , E02F9/24
摘要： PROBLEM TO BE SOLVED: To provide a device, in which the accident of an operator being caught between a heavy machine and a structure is prevented and which has simple structure and hardly gets trouble. SOLUTION: The contact preventive device 20 is composed of flexible bodies 40 installed on an outer circumferential section, particularly a rear section and left-right both side sections at the dead angles of an operator in the revolving super structure 12 of the slewing heavy machine 10. Bars 22 made of a foamed resin are arranged while being separated from the outer circumferential section of the revolving super structure 12 in an approximately circumferential shape along the outer circumferential section in the flexible bodies 40, and the flexible bodies 40 consist of the bars 22 and supports 30 detachably mounting the bars 22 on the outer circumferential section of the revolving super structure 12. According to such constitution, the entering of the operator into the slewing area of the heavy machine is prevented completely.

2. 发明专利

JP2000064341A TRENCH EXCAVATING METHOD 失效
公开(公告)号：JP2000064341A
公开(公告)日：2000-02-29
申请号：JP23691898
申请日：1998-08-24
申请人： KUMAGAI GUMI CO LTD
发明人： MASUDA MITSUO , KAKIUCHI YUKIO , MIMURA TOMOO , KITAHARA SHIGEO , GOTO MAKOTO
IPC分类号： E02F5/06
摘要： PROBLEM TO BE SOLVED: To save labor, and accelerate excavation in the excavation of a trench extended along the wall surface of a structure. SOLUTION: A trench 16 elongated along the wall surface 12 of a structure 10 is excavated in the method. The trench is excavated by a trencher during a time when a space is held between the trencher 20 and the wall surface 12 of the structure by applying a spacing means 28 installed to the trencher 20 onto the wall surface of the structure at that time.

3. 发明专利

JPH10338472A CONTACT PREVENTING DEVICE OF CONSTRUCTION HEAVY MACHINE 失效
公开(公告)号：JPH10338472A
公开(公告)日：1998-12-22
申请号：JP16490097
申请日：1997-06-09
申请人： KUMAGAI GUMI CO LTD
发明人： TOKIOKA MASATAKE , KITAHARA SHIGEO , GOTO MAKOTO , NAKANISHI TSUTOMU
IPC分类号： B66C23/88
摘要： PROBLEM TO BE SOLVED: To provide a contact preventing device effective in an accident in which an operator is pinched between a heavy machine and a structure. SOLUTION: A fitting-type clamp 32 capable of supporting a bar 22 is provided on the tip of a bar-shaped bracket 30, and the attaching and detaching operation of the bar 22 is facilitated. At attaching magnet 40 is provided on the base end of the bracket 30 through a hinge 35 capable of oscillating the bracket 30 in the horizontal direction, and the bracket 30 can be easily attached to the side surface of an upper turning body 12. A material of the bar-shaped bracket 30 has moderate flexibility and self erecting performance, concretely, it can horizontally support the bar 22 and can prevent an operator or a structure body brought in contact with a contact preventing device 20 from being injured or damaged.

4. 发明专利

JP2000064800A INVERT IN MOUNTAIN TUNNEL AND INSTALLING METHOD OF UNDERGROUND DRAINAGE WORK 失效
公开(公告)号：JP2000064800A
公开(公告)日：2000-02-29
申请号：JP23719198
申请日：1998-08-24
申请人： KUMAGAI GUMI CO LTD
发明人： MASUDA MITSUO , KAKIUCHI YUKIO , MIMURA TOMOO , KITAHARA SHIGEO , GOTO MAKOTO
IPC分类号： E21F16/02
摘要： PROBLEM TO BE SOLVED: To provide a method, in which an invert and underground drainage works are installed quickly into the bottom-section ground of a mountain tunnel, at the time of the installation of the invert and the underground drainage works. SOLUTION: Grooves 22 extended from one end of the mountain tunnel 10 to the other end are formed at a central section regarding the cross direction of the bottom-section ground 14 of the mountain tunnel 10 in the bottom-section ground 14. Parts 28 of the inverts 26 crossing the grooves 22 are formed into the grooves 22, and the underground drainage works elongated along the grooves 22 are installed into the grooves 22. The residual parts 42, 44 of the inverts continued to parts 28 of the inverts to the excavation and excavation traces of the bottom-section ground 14 are formed regarding each of both sides of parts 28 of the inverts, and the inverts are formed.

5. 发明专利

JP2000087390A TRENCHER 失效
公开(公告)号：JP2000087390A
公开(公告)日：2000-03-28
申请号：JP25709598
申请日：1998-09-10
申请人： KUMAGAI GUMI CO LTD
发明人： MASUDA MITSUO , KAKIUCHI YUKIO , MIMURA TOMOO , KITAHARA SHIGEO , GOTO MAKOTO
IPC分类号： E02F5/06 , E02F7/02 , E02F7/06
摘要： PROBLEM TO BE SOLVED: To provide a trencher having a dust removing function. SOLUTION: A trencher 10 is comprised of a tractor 16, a groove excavating device 18 supported by the tractor, and a belt conveyor 20 which is mounted on the tractor and receives excavated pieces produced by the operation of the groove excavating device, and to convey the pieces toward the side of the tractor. The trencher also includes a cover 40 covering the belt conveyor and having an opening 44 which opens toward the side of the tractor 16, and a device 22 for sucking air of the inside of the cover.

6. 发明专利

JPH1150778A TUNNEL DIG-DOWN METHOD 失效
公开(公告)号：JPH1150778A
公开(公告)日：1999-02-23
申请号：JP21050197
申请日：1997-08-05
申请人： KUMAGAI GUMI CO LTD
发明人： KAKIUCHI YUKIO , MIMURA TOMOO , KITAHARA SHIGEO , GOTO MAKOTO
IPC分类号： E21D9/01 , E21D9/00
摘要： PROBLEM TO BE SOLVED: To improve safety and work efficiency by digging right and left grooves by a trencher introduced into the upper half part of a tunnel, placing concrete in the grooves to form right and left side walls of the lower half part of the tunnel, and then digging between the right and left side walls to construct the lower half part of the tunnel. SOLUTION: At the time of digging down the upper half part 11A of a tunnel to construct the lower half part, or at the time of digging down the existing tunnel to be widened downward, first a trencher 12 is introduced into the upper half part 11A of the tunnel or the existing tunnel, and two lines of right and left grooves 14L, 14R are digged by the trencher 12. Subsequently, concrete is placed in the grooves 14L, 14R to for the left side wall 21L and the rigth side wall of the lower half part or the widened part of the tunnel. The space between the right and left side walls is digged to construct the lower half part or the widened part of the tunnel. Thus the work efficiency can be improved and at the time of digging, the natural ground at the back can be retained by the right and left side walls so as to improve the safety.

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