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1. 发明专利

JPH0771006A METHOD OF CUTTING ASPHALT CONCRETE PAVEMENT SURFACE 失效
公开(公告)号：JPH0771006A
公开(公告)日：1995-03-14
申请号：JP21991193
申请日：1993-09-03
申请人： TOKYO GAS CO LTD
发明人： KAWAGUCHI MICHINORI , SATAKE YUKINOBU
IPC分类号： E01C23/09 , E01C23/12
摘要： PURPOSE:To open a hole having arbitrary shape without use of a large machine or a cooling water, by driving a cut frame on the pavement face softened with heat and breaking only the pavement face within the cut frame. CONSTITUTION:A circular cut frame 1 for instance is placed on the surface of well-cleaned pavement face 3 and the pavement face 3 near the cut frame 1 therein is heated concentratively by use of a gas burner 5 supplied with propane gas. When the surface of pavement face 3 becomes soft, the burner is stopped heating and the circumference of cut frame is hammered to drive in the pavement face 3. And the asphalt concrete within the cut frame is broken while sticking the blade edge of a concrete breaker into true cut frame 1. And the broken fragments are removed from the cut frame 1.

2. 发明专利

JPH10196279A NEW-OLD GAS FEED PIPE REPLACING LAYING METHOD WITHOUT OPEN-CUTTING AND DEVICE THEREFOR 失效
公开(公告)号：JPH10196279A
公开(公告)日：1998-07-28
申请号：JP464797
申请日：1997-01-14
申请人： TOKYO GAS CO LTD
发明人： KAWAGUCHI MICHINORI , HORIGUCHI MASATAKA
IPC分类号： E21D9/06 , F16L1/024
摘要： PROBLEM TO BE SOLVED: To provide a construction method and a device that can lead in new and old pipes for laying by manual work without open-cutting. SOLUTION: Soil at both ends of a replacing laying area is excavated until an existing gas feed pipe 3 is exposed to provide traction side and drawing side vertical holes 1, 2. A traction device 4 using a chain block 9 is set in the traction side vertical hole 1. A chain 11 of the traction device 4 and the existing gas feed pipe 3 are connected using a holding metal fitting 13. The tip of a synthetics resin pipe 35 is led into the drawing side vertical hole 2, and the synthetic resin pipe 35 and the existing gas feed pipe 3 are connected using a universal joint 28 and a connecting adaptor 21. The chain block 9 is then driven in the traction side vertical hole 1 to tow the existing gas feed pipe 3 and hereby to draw in the synthetic resin pipe 35. The existing gas feed pipe 3 exposed being towed to the length allowed in the traction side vertical hole 1 is cut at the root. The holding metal fitting 13 is set again to the cut part, and the chain block 9 is driven to draw in the synthetic resin pipe 35 while towing out the existing gas feed pipe 3. This process is repeated to replace the existing gas feed pipe 3 with the synthetic resin pipe 35.

3. 发明专利

JPH1162483A METHOD AND DEVICE FOR LAYING RESIN PIPE NONEXCURVATIONWISE 失效
公开(公告)号：JPH1162483A
公开(公告)日：1999-03-05
申请号：JP22214797
申请日：1997-08-19
申请人： TOKYO GAS CO LTD
发明人： KAWAGUCHI MICHINORI
IPC分类号： E21D9/08 , F16L1/024
摘要： PROBLEM TO BE SOLVED: To ensure connection between a screw auger and a pulled-in polyethylene pipe in a pit on the side of a user from the ground in the subject method. SOLUTION: A vertical hole A is excurvated on a branch pipe on the side of road while a vertical hole B is excurvated in a site on the side of a user, and a horizontal hole 22 is bored from the hole A toward the hole B by the use of a screw auger 19 furnished with a shovel type cutting edge 20. At the time when the blade 20 reaches the hole B, a polyethylene pipe 17 equipped with a connector at its tip is inserted into the hole B, and a hook 1 is engaged with both shoulders 20a of the blade 20. The screw auger 19 is then pulled out at the side of the hole A, and thereafter the pipe 17 is pulled in the horizontal hole 22 formed by the screw auger 19.

4. 发明专利

JPH0797891A SCREW AUGER PROPULSION DEVICE 失效
公开(公告)号：JPH0797891A
公开(公告)日：1995-04-11
申请号：JP24224493
申请日：1993-09-29
申请人： TOKYO GAS CO LTD
发明人： KAWAGUCHI MICHINORI , SATAKE YUKINOBU
IPC分类号： E21B7/04 , F16L1/024
摘要： PURPOSE:To provide a screw auger propulsion device which is small-sized and lightweight, at a low cost by arranging two guide shafts in parallel on an installation board and installing a shiftable board in a slidable manner on the guide shaft. CONSTITUTION:An installation board 1 is installed in a propulsion shaft. A motor-driven drilling machine 13 is fitted from the above into the fixed frame 12 of a motor-driven drilling machine by retreating a suftable board 5. At the same time, the top end 14' of a rotary shaft 14 is fitted into a fitting hole 10. Then, the rear end part of a top leading screw auger is installed on a chuck 8, and a cantilever state is generated. A top leading screw auger 19 is revolved through a horizontal driving shaft 7, etc., by revolving the motor-driven drilling machine 13. Then, the shiftable board 5 is shifted on the installation board 1 by a pinion 16 and a rack 15 under revolving a handle 18. At the same time, the top end part of the top leading screw auger 19 is inserted into the ground.

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