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1. 发明专利

JPH0782986A SMALL CALIBER PIPE EXCAVATOR 失效
公开(公告)号：JPH0782986A
公开(公告)日：1995-03-28
申请号：JP23124693
申请日：1993-09-17
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： ENDO NOBUAKI , MORO TAKASHI
IPC分类号： E21D9/06
摘要： PURPOSE:To reduce communication cables with the ground by providing a generator to a hydraulic driving device driving a cutter head, and supplying power consumed in a front end excavation device from the generator. CONSTITUTION:A cutter head A is driven between a front end excavation device 110 and a power unit 120 on the ground. or posture control is made between then, or between them is connected with hydraulic hoses 122, 124 and 126 used for conveying earth with pressure. After that, a generator 2 is directly connected to a cutter driving motor 1 driven by oil pressure, and the output is supplied to a signal transmission device 5 through a power dable 200. Then, power is supplied to survey equipments, etc., 6-10 in the device 110 from the device 5 through a cable 220. In addition, signal cable wiring is not required by using space photo transmission 240 for signal transmission between the device 110 and a control panel 130 on the ground. According to the constitution, power supply and communication cables between the front end excavation device and ground unit are not required and, at the same time, re-shoring time can be reduced, cable connection can be eliminated, and voltage drop can be prevented.

2. 发明专利

JPH10212898A PIPE JACKING MACHINE 失效
公开(公告)号：JPH10212898A
公开(公告)日：1998-08-11
申请号：JP1659397
申请日：1997-01-30
申请人： AIREC GIKEN KK , HITACHI CONSTRUCTION MACHINERY
发明人： KASAI KOJI , ENDO NOBUAKI , MORO TAKASHI , MORIYA HIDEKI
IPC分类号： E21D9/093 , E21D9/06
摘要： PROBLEM TO BE SOLVED: To provide a pipe jacking machine capable of preventing damage by external force worked at the time of the propulsion of a succeeding pipe of a direction-changing jack. SOLUTION: The pipe jacking machine has a plurality of mutually inclinable connected drum sections, a cutter head for excavating a bedrock and three direction-changing jacks capable of connecting and tilting the drum sections on the front end sides to the drum sections at rear sections, and the direction changing jacks are composed of leaders, to which relief means relieving pressure oil in the cylinders of the direction-changing jacks are installed, and base-push jacks propelling a succeeding pipe. Shrinkage-limit set values for determining the shrinkage limits of the direction-changing jacks are set at that time, and a controller 3 energizing a solenoid 6 and stopping the propulsion of the succeeding pipe by the base-push jack when at least one of the three direction-changing jacks is decided so as to be shrunk until at least one of the jacks reaches the shrinkage-limit set value while energizing the solenoid 6 and stopping the propulsion of the succeeding pipe even when at least one of the jacks is decided to be shrunk or extended under the state, in which at least one of the jacks is not operated, is mounted.

3. 发明专利

JPH07180478A SHIELD MACHINE 失效
公开(公告)号：JPH07180478A
公开(公告)日：1995-07-18
申请号：JP32159993
申请日：1993-12-21
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： ENDO NOBUAKI , MORO TAKASHI
IPC分类号： E21D9/06
摘要： PURPOSE:To simplify operation even when the number of shield jacks is increased in a large-diameter shield machine. CONSTITUTION:At least two shield jacks 3A, 3B are used as a set for the shield jacks 3 of a shield machine, and a set of shield j acks 3A, 3B are held by a common spreader 2 to perform the same operation in a hydraulic circuit. The number of operation objects is reduced, and the operation is facilitated. The logic can be easily formed for automatic direction control, and parts can be used in common with intermediate/small-diameter shield machines. The face contact with segments is reduced, and the segments are prevented from being chipped or bent.

4. 发明专利

JPH0771189A METHOD AND DEVICE TO CONTROL PUSHED PIPE TYPE SHIELD MACHINE 失效
公开(公告)号：JPH0771189A
公开(公告)日：1995-03-14
申请号：JP21998793
申请日：1993-09-03
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： TAKAHASHI HITOSHI , SHIMA TADAO , SUDA MASAO , ENDO NOBUAKI
IPC分类号： E21D9/06
摘要： PURPOSE:To automate drilling processes and achieve faster, reproducive and lower-cost drilling work by making measurements to select judgement that the drive of a buried pipe is started and finished and automatically controlling system management. CONSTITUTION:A drilling device 1 at the end contains an inclinometer 14, a soil pressure meter 15 and stroke length detecting meters 17, 18 as sensors, as well as an electromagnetic valve 19 to stroke-control a direction modifying part. Data from these are fed into a data processor 24 in a soil pit via multiple transfers 21, 25 and an I/O unit 23 to modify deviation from a target value in remote control. A target light receiver 22 is provided for monitoring in the drilling direction to receive radiated laser beams on the target plane and show the degree of the deviation. A primary pushing device 27 is provided in a vertical shaft to detect propulsion speed pressure for measuring the propulsion pressure and stroke of a propulsion jack. Then, the propulsion and retreat of the drilling device 1 is automatically judged, followed by automatic processing.

5. 发明专利

JPH09317388A METHOD AND DEVICE FOR INDICATING OPERATION LOAD OF SOIL AND CONVEYING PUMP 失效
公开(公告)号：JPH09317388A
公开(公告)日：1997-12-09
申请号：JP13454796
申请日：1996-05-29
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： ENDO NOBUAKI
IPC分类号： E02F7/10 , E21D9/12 , F04B15/00 , F15B11/028
摘要： PROBLEM TO BE SOLVED: To exactly monitor operation load of a soil and sand conveying pump by discriminating the operation period of a piston for soil and sand conveying and a movable cylinder in each process, and detecting to indicate oil pressure in the operation period after a time required for one cycle is previously calculated in response to detected oil pressure behavior and respective time distribution of each process occupied during the time required for one cycle on the basis of a pressure oil flow rate necessary for one cycle and the pressure oil flow rate respectively necessary for each process. SOLUTION: Detected signals from oil pressure detectors 45, 46 are successively stored to a memory. When the instruction of a process from an operation switch 52 is input, numerical data of a one-cycle part just before the inside of the memory are used to calculate a time necessary for one cycle. Thereafter the time necessary for one cycle is calculated by using total necessary pressure oil flow rates and a pressure oil flow rate classified by a process necessary for each process stored in the memory. The operation times of a cylinder and a piston are discriminated in each process, and oil pressure is detected in the operation time to be indicated on a display 49.

6. 发明专利

JPH0960477A DIRECTION CONTROL METHOD AND DEVICE FOR BURIED PIPE ADVANCE TYPE EXCAVATOR 失效
公开(公告)号：JPH0960477A
公开(公告)日：1997-03-04
申请号：JP20879395
申请日：1995-08-16
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SHIMA TADAO , ENDO NOBUAKI
IPC分类号： E21D9/093 , E21D9/06
摘要： PROBLEM TO BE SOLVED: To reduce the burden of an operator and improve the work efficiency by projecting a laser beam toward the reference line indicating the excavation direction, and automatically correcting the excavation direction in response to the light receiving position on a target face. SOLUTION: Vertical direction fuzzy inference is conducted based on a vertical direction fuzzy rule in an arithmetic processing unit with the light reception section vertical drift quantity Z1 and pitching value ξ used as input variables. A required vertical direction correction quantity dU is obtained, and horizontal direction fuzzy inference is conducted based on a horizontal direction fuzzy rule with the light reception section horizontal drift quantity Y1 , intermediate section horizontal drift quantity Y2 , and yawing value η used as input variables. A required horizontal direction correction quantity dV is obtained, and a stroke quantity S of a direction correcting jack is obtained in response to the inferred results of two fuzzy inferences. The excavation direction of an excavator is automatically corrected to the direction reducing a drift quantity, and the work efficiency can be improved.

7. 发明专利

JPH07180477A SHIFT CONTROL DEVICE FOR EXCAVATOR 失效
公开(公告)号：JPH07180477A
公开(公告)日：1995-07-18
申请号：JP32396893
申请日：1993-12-22
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： OZAWA HAJIME , ENDO NOBUAKI
IPC分类号： E21D9/06
摘要： PURPOSE:To enable a rear carriage to stably and correctly self-propel in an excavator having the self-propelled rear carriage. CONSTITUTION:A drive control device 10 allows a rear carriage 3 to self-propel when the rear carriage 3 is separated from an excavator main body l by the prescribed range or above with the signal obtained from a relative distance detector 9 and stops the self-propulsion when the distance becomes the prescribed range or below. The self-propelling speed of the rear carriage 3 is controlled at the maximum excavating speed of the excavator main body 1 or at a speed slightly higher than the actual excavating speed. The rear carriage 3 follows the excavator main body 1 within the relative distance of the prescribed range.

8. 发明专利

JPH07139290A EMBEDDED-PIPE PROPULSION TYPE EXCAVATOR AND METHOD FOR CONTROLLING DIRECTION THEREOF 失效
公开(公告)号：JPH07139290A
公开(公告)日：1995-05-30
申请号：JP28272893
申请日：1993-11-11
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SHIMA TADAO , SUDA MASAO , ENDO NOBUAKI , TAKAHASHI HITOSHI
IPC分类号： E21D9/093 , E21D9/06 , E21D9/08
摘要： PURPOSE:To minimize meandering without depending on skill so as to enable automatic excavation by detecting the deviations of the front and rear of a shield excavator from a reference line by the reception of a laser beam, and performing arithmetic processing for automatic control. CONSTITUTION:Data on the pitching and yawing of the front and rear of an excavator, which are detected by a pitching meter/yawing angle meter 15 at the front of the excavator and by a laser beam detector 13 at the rear, are inputted to the I/O unit 34 of an arithmetic processing unit 36 and depicted on the display of a position- computing display device 37. The propulsion distance is measured using the propulsion distance detector 38 of a root pushing device in a vertical shaft and is inputted to the position-computing display device 37 and the I/O unit 34. When these arithmetic data deviate from a reference value by a certain threshold or more, a direction modifying signal is automatically transmitted from the arithmetic processing unit 36 through the I/O unit 34, a ground station 35 and an end station 33 to a solenoid valve 20 for a direction-modifying jack in an end propulsion unit so as to perform a modifying operation and the amount of modification is measured and monitored by a direction modification stroke meter 31.

9. 发明专利

JPH06160092A SMALL-BORE EXCAVATOR 失效
公开(公告)号：JPH06160092A
公开(公告)日：1994-06-07
申请号：JP31507792
申请日：1992-11-25
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： ENDO NOBUAKI , MORO TAKASHI
IPC分类号： E21D9/06 , G01C15/00
摘要： PURPOSE:To eliminate adjustment operations of detectors in a small-bore excavator. CONSTITUTION:Actual measurements coincident with an attitude of a small-bore excavator on the ground, etc., are set to actual measurement setting means 42c in an operation machine. Correction data calculating means 42b fetches a detected quantity from the excavator of an attitude state coincident with the actual measurements and calculates correction data in which the detected quantity coincides with the actual measurements. The data calculated by the means 42b is stored in a correction data memory 42d. Correction calculating means 42e corrects the detected quantity from the detector when the excavator is disposed under the ground by the data stored in the memory 42e, and outputs it to an attitude calculation display unit.

10. 发明专利

JPH11153089A PRESSURE OIL FEEDING DEVICE FOR SMALL BORE PIPE PROPULSION MACHINERY 失效
公开(公告)号：JPH11153089A
公开(公告)日：1999-06-08
申请号：JP31952397
申请日：1997-11-20
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： MORO TAKASHI , ENDO NOBUAKI
IPC分类号： E21D9/06 , F04B49/00
摘要： PROBLEM TO BE SOLVED: To regulate a discharge flow rate from a hydraulic pump to a constant value through simple operation even when a change in a source frequency is produced. SOLUTION: When the source frequency of a three phase induction electric motor 102 is 50 hertz, by manually selecting a 50 hertz mode by a mode selecter 108, a drive signal for a target inclination angle 6a previously computed and set by a set part for 50 hertz is outputted to a driver 106 through operation of the operation part for 50 hertz of an external input apparatus 121. In a case of 60 hertz, by manually selecting a 60 hertz mode by the mode selecter 108, a drive signal for a target inclination angle 6b previously computed and set according to operation of the operation for 60 hertz of the external input apparatus 121 is outputted to a driver 106.

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