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21. 发明专利

JP2000179290A TUNNEL EXCAVATOR 失效
公开(公告)号：JP2000179290A
公开(公告)日：2000-06-27
申请号：JP35406198
申请日：1998-12-14
申请人： OHBAYASHI CORP
发明人： MATSUNO TORU , NAKAJIMA MASATOMO
IPC分类号： E21D9/10 , E21D9/11
摘要： PROBLEM TO BE SOLVED: To prevent fall of earth in the natural ground at the crest. SOLUTION: This excavator includes a front shield part 11 and an intermediate and a rear shield parts 12, 13. The shield parts 11 and 12 are rotatably connected to each other through a bearing. The intermediate shield part 12 and the rear shield part 13 are separably connected to each other. A cutter head 14 is freely rotatably disposed at the tip of the front shield part 11. In the front shield part 11, a front gripper 16 is provided to freely project and retreat toward the excavated natural ground excavated surface 15, and a driving motor 17 for driving the cutter head 14 in rotation is provided. A bag 30 where a fluid is injected at need to be expanded is provided between the outer periphery of the rear shield part 13 and the natural ground excavated surface 15.

22. 发明专利

JP2000154647A ROTARY TYPE CONCRETE SPRAY MACHINE 失效
公开(公告)号：JP2000154647A
公开(公告)日：2000-06-06
申请号：JP33145198
申请日：1998-11-20
申请人： OHBAYASHI CORP
发明人： YAMAMOTO YUKINOBU , HASEGAWA ISAO , NAKAJIMA MASATOMO
IPC分类号： E21D11/10 , E04G21/02
摘要： PROBLEM TO BE SOLVED: To enable definite mixing and agitating concrete and an accelerating agent while avoiding clogging in a supply pipe caused by the mixing of the accelerating agent. SOLUTION: In a rotary type concrete spray machine with which a concrete sent through a concrete supply sleeve 16 is projected by an impeller device 18 provided at the tip portion of a supply sleeve 16, the impeller device is equipped with an inside impeller 30, an outside impeller 28, and a guide sleeve 34 having a communicating opening interposed between them. Thus, the supply sleeve 16 is coaxially arranged with a casing sleeve 14 bearing a rotation drive mechanism portion 20 of an impeller device by opening a predetermined gap at the inner side of the casing sleeve 14, and is a double tube pipe construction consisting of a concrete supply sleeve 16 with the tip facing the inside impeller 30 of the impeller device 18. And a supply pipe 21 of the liquid accelerating agent is piped to the gap of both the sleeves 14, 16, and the accelerator agent jetting nozzle 22 is connected to the tip of he supply pipe at the tip position of the concrete supply sleeve 16.

23. 发明专利

JP2000073565A ROTARY TYPE CONCRETE SPRAYING MACHINE 失效
公开(公告)号：JP2000073565A
公开(公告)日：2000-03-07
申请号：JP24608698
申请日：1998-08-31
申请人： OHBAYASHI CORP
发明人： YAMAMOTO YUKINOBU , HASEGAWA ISAO , NAKAJIMA MASATOMO
IPC分类号： E04G21/02 , F04D29/02 , F04D29/24
摘要： PROBLEM TO BE SOLVED: To provide a rotary type concrete spraying machine which can project concrete at a small projection angle even in the case where a rotor rotates in either of positive and negative rotating directions, and can therefore carry out a spraying work without a restriction due to the position of the spraying machine. SOLUTION: A plurality of impellers 10 plantedly provided on the outer periphery of a rotor 1 is an elastic plate which is composed of a rubber plate or a spring steel material and set to a required elastic modulus, and when a rotor 1 rotates anticlockwisely or clockwisely, as each impeller 10 curvedly inclines to a delay side in a rotating direction according to its rotary inertia and a concrete pressure supplied to the central part of the rotor 1, the concrete is moved along the impeller 10 and discharged from its tip with a fan-shaped extension.

24. 发明专利

JPH11241591A EXCAVATING METHOD FOR TUNNEL BORING MACHINE 失效
公开(公告)号：JPH11241591A
公开(公告)日：1999-09-07
申请号：JP4305298
申请日：1998-02-25
申请人： OHBAYASHI CORP
发明人： HASEGAWA ISAO , NAKAJIMA MASATOMO , YAMAMOTO YUKINOBU
IPC分类号： E21D9/11 , E21D9/10
摘要： PROBLEM TO BE SOLVED: To provide an excavating method for a TBM machine capable of avoiding cost increase and lower working efficiency. SOLUTION: When the natural ground is actually excavated, the resultant force H of cutter torque T and thrust W operating on a cutter head is determined by main gripper reaction G for driving at a resultant force limited value HLim or less for sliding. The cutter torque, a cutter rotating number and an excavating speed obtained during excavation are computed and the strength σof a bed rock is estimated from a predetermined working place area to find a surface pressure limited value gLim for a gripper (S101). The surface pressure limited value gLim is stored in a memory together with drilling position data xi (S102). For the surface pressure (g) during thrusting a pit wall with the gripper, position data corresponding to the present position of the gripper is selected out of the stored limited values gLim . When the gLim is selected, the surface pressure (g) of the gripper is set to be gLim or less and a control signal is delivered from a computer to the gripper so as to thrust the pit wall with the set pressure.

25. 发明专利

JPH11117529A SHOTCRETE METHOD BY ROTARY SHOTCRETE MACHINE 失效
公开(公告)号：JPH11117529A
公开(公告)日：1999-04-27
申请号：JP28394497
申请日：1997-10-16
申请人： OHBAYASHI CORP
发明人： YAMAMOTO YUKINOBU , NAKAJIMA MASATOMO
IPC分类号： E21D11/10 , E04G21/02
摘要： PROBLEM TO BE SOLVED: To provide a shotcrete method by a rotary shotcrete machine capable of performing shotcrete work while securely mixing and agitating concrete and an accelerating agent together and easily avoiding clogging of concrete in a cylinder without much abrasion loss to the constituent parts. SOLUTION: An impeller apparatus 15 of a rotary shotcrete machine 10 comprises an inside impeller 11, outside impeller 12, and a guide sleeve 14 equipped with a communicating opening 13 interposed therebetween. And concrete 19 is supplied from the inside impeller 11 to the outside impeller 12 through the communicating opening 13 of the guided sleeve 14; and when spraying concrete by the outside impeller 12, a liquid accelerating agent is added and mixed through an accelerating agent supply pipe 20 to the concrete 19 to be stirred and supplied by an inside impeller 11.

26. 发明专利

JPH1151932A ESTIMATING METHOD FOR TUNNEL BASE ROCK STRENGTH 失效
公开(公告)号：JPH1151932A
公开(公告)日：1999-02-26
申请号：JP20628297
申请日：1997-07-31
申请人： OHBAYASHI CORP
发明人： NAKAJIMA MASATOMO
IPC分类号： E21D9/06 , E21D9/10 , G01N33/24
摘要： PROBLEM TO BE SOLVED: To estimate the base rock strength with practical accuracy of estimating the bed rock strength base on the unit excavation energy obtained from the detection values of required sensors. SOLUTION: The present measured values of a cutter torque sensor S1, a cutter revolving speed sensor S2, a thrust sensor S3, and a stroke sensor S4 installed on a tunnel boring machine(TBM) are loaded, and the bed rock strength excavated by the TBM machine is estimated based on the unit excavation energy (e) obtained from the specific equation with these measured values. In this estimating method of the bed rock strength, the depth of cut for unit thrust in good correlation with the bed rock state from the actual execution result by using the TBM machine in the past is shown in the specific equation, and the bed rock strength can be estimated with the sufficiently practical accuracy.

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