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    • 1. 发明专利
    • Method for start control over electric motor for punching device
    • 用于打孔装置的电动马达开始控制的方法
    • JP2013162738A
    • 2013-08-19
    • JP2012035599
    • 2012-02-06
    • Sanwa Kizai Co Ltd三和機材株式会社
    • TAKAHASHI HIDEOTANAKA YUSUKEKIMURA AKIRA
    • H02P1/28F02N11/08
    • Y02T10/48
    • PROBLEM TO BE SOLVED: To solve the problems that when a punching load is relatively low, electric power is wasted in a general kondorfer start or reactor start of a conventional electric motor for punching device since start torque is large for the load and that even when stalling torque is not necessary on a site where the punching load is relatively low, a power generator having generator capacity which is larger than needed should be prepared for a conventional machine.SOLUTION: A transformer or reactor coil of a punching device is configured to have multiple stages of taps, a multi-stage voltage switching circuit for start from a low voltage is provided to raise a voltage up to a voltage in primary operation, and a conventional type or the multi-stage system type is optionally selected according to a punching load.
    • 要解决的问题:为了解决冲孔负荷相对较低的问题,由于起动扭矩对于负载大,所以在常规的电动马达的普通电动机的起动或起动中都会浪费电力,因为即使是 在冲压负荷相对较低的场所不需要失速扭矩,对于传统的机器,应该准备发电机容量大于所需的发电机容量。解决方案:冲压装置的变压器或电抗器线圈被配置为具有 提供多级抽头,提供用于从低电压启动的多级电压切换电路,以将电压升高到一次操作中的电压,并且根据冲压可选地选择常规型或多级系统类型 加载。
    • 2. 发明专利
    • Casing press-in device and casing press-in method
    • 外壳设备和外壳加压方法
    • JP2013014982A
    • 2013-01-24
    • JP2011149883
    • 2011-07-06
    • Sanwa Kizai Co Ltd三和機材株式会社
    • HAMANO MAMORUTORIKAI MITSUTOSHIMINAMI MITSUSHIGETAKAHASHI HIDEOSAITO MAMORU
    • E02D7/20
    • PROBLEM TO BE SOLVED: To provide a casing press-in device which can press-in a casing at a point away from an adjacent land in a specially narrow and triangular-shaped corner ground.SOLUTION: In a casing press-in device in the present invention, a base frame 1 that lies on a ground, an elevating frame 2 that is supported above the base frame 1 in a freely-liftable manner with a lifting cylinder 3, and a rotary-driven press-in mechanism K that rotationally presses-in a steel pipe pile or a casing P to the ground, are included. The center of a casing insertion port 8 opened through both the base frame 1 and the elevating frame 2 is assigned as a boring center C. A pair of the hydraulic lifting cylinders 3 are placed forward from the gravity center G of the machine body, sitting symmetrically on the left and the right side of the boring center C that is on the left-right line E. The gravity center G of the machine body is arranged to be on a front-back line in the plan view and backward on the machine body from the boring center C, and a gravity-center-position-adjusting hydraulic cylinder 35 that corrects the gravity center G position to coincide with the boring center C is placed backward from the gravity center G and between the base frame 1 and the elevating frame 2.
    • 要解决的问题:提供一种套管压入装置,其可以在特别窄且三角形的角落地面中远离相邻的地面的位置压入壳体。 解决方案:在本发明的套管压入装置中,设置在地面上的基座框架1,以可自由提升的方式支撑在底座框架1上的升降框架2与升降缸3 ,以及将钢管桩或壳体P旋转压入地面的旋转驱动压入机构K. 通过基架1和升降框架2打开的壳体插入口8的中心被分配为镗孔C。一对液压提升缸3从机体的重心G向前放置 对称地位于钻孔中心C的左右线E的左右侧。机体的重心G布置成在俯视图中位于前后线,并且在机器上向后 镗孔C的主体和重心中心位置调整液压缸35,其重心中心G位置与镗孔C重合,从重心G向后放置在基架1和升降位置之间 (C)2013,JPO&INPIT
    • 4. 发明专利
    • Construction machine
    • 建筑机械
    • JP2005328670A
    • 2005-11-24
    • JP2004146029
    • 2004-05-17
    • Sanwa Kizai Co Ltd三和機材株式会社
    • TAKAHASHI HIDEOKIMURA AKIRA
    • H02H3/24H02H3/00H02P23/00H02P7/36
    • PROBLEM TO BE SOLVED: To completely prevent open-phase operation of a three-phase motor, without causing increase in the load on site workers and lowering the working efficiency. SOLUTION: An open-phase detection circuit 7 feeds minute DC currents to the three-phase motor 4 via three cab-tire cables 3 of each phase, and when breakage and erroneous connection are found at one of the three cab-tire cables 3, the DC current is blocked at the one of the three cab-tire cables 3. The open-phase detection circuit 7 detects open phase by the blocking of the current and outputs an on-operation inhibiting signal S2 to an operation switch 2. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:完全防止三相电动机的开相运行,而不会导致现场工作人员的负载增加和降低工作效率。 解决方案:开路相位检测电路7通过三相电动三轮电缆3向三相电动机4馈送微小的直流电流,并且当在三个驾驶室轮胎中的一个发现断裂和错误连接时 电缆3,在三个驾驶室轮胎电缆3中的一个处阻塞直流电流。开路相位检测电路7通过阻断电流来检测开路相位,并将操作禁止信号S2输出到操作开关2 (C)2006年,JPO&NCIPI
    • 5. 发明专利
    • Measuring signal transmitting system during excavation and excavator provided with the same
    • 测井信号发射系统及其提供的挖掘机和挖掘机
    • JP2003314179A
    • 2003-11-06
    • JP2002120484
    • 2002-04-23
    • Sanwa Kizai Co Ltd三和機材株式会社
    • HAMANO MAMORUTAKAHASHI HIDEONAKAGAWA TAKASHI
    • E21B7/00
    • PROBLEM TO BE SOLVED: To dispense with an adding work of a transmission line when adding an excavating rod (and/or casing) and dispense with maintenance for a long time due to low power consumption.
      SOLUTION: In a transmission system transmitting measuring signals by various measuring detectors 7 mounted on an excavation rod 5 of an excavator 1 or an excavation head 6 connected to the under end, to a control device 2 on the ground, an infinitesimal radio transceiver units A, B are installed in the excavation head 6, the excavation rod 5, the casing 13, or in the joint of the casing 13 externally fitted to the excavation rod and the measured signals by the detector 7 are transmitted to the control device 2 on the ground through the transceiver unit.
      COPYRIGHT: (C)2004,JPO
    • 要解决的问题:在添加挖掘杆(和/或套管)时省去传输线的添加工作,并且由于低功耗而长时间维护。 解决方案:在安装在挖掘机1的挖掘杆5上的各种测量检测器7或连接到下端的挖掘头6的测量信号传送到地面上的控制装置2的传输系统中,一个无限小的无线电 收发器单元A,B安装在挖掘头6,挖掘杆5,壳体13中,或者外部装配到挖掘杆的壳体13的接头中,并且由检测器7将测量的信号传送到控制装置 2通过收发器单元在地面上。 版权所有(C)2004,JPO
    • 7. 发明专利
    • MOTOR PROTECTIVE CONTROLLER
    • JPH08303168A
    • 1996-11-19
    • JP10723595
    • 1995-05-01
    • SANWA KIZAI CO LTD
    • TAKAHASHI HIDEOTSUBOTA KAZUKI
    • E21B7/00G01R19/165
    • PURPOSE: To protect and control burning properly in consideration of a coil temperature and a current value by detecting both the coil temperature and the current value. CONSTITUTION: In an excavator excavating the ground by rotating and driving an excavating shaft by an electric motor 10, the excavator has a temperature detector 20 detecting the coil temperature of the electric motor 10 directly or indirectly, a current detector 21 detecting the current value of the electric motor 10 and a controller 23. The controller 23 computes an operation lower- limit current value by the coil temperature detected by the temperatures detector 20 while having the calculation of a motor operating time by the coil temperature and the current value of the electric motor 10 when the current value of the electric motor 10 detected by the current detector 21 exceeds the operation lower-limit current value, the start of the measurement of the time elapsed, and the stop function of the electric motor 10 at a time when the time elapsed exceeds the operating time.
    • 8. 发明专利
    • SIGNAL TRANSMITTER AND WORKING MACHINE
    • JPH06153321A
    • 1994-05-31
    • JP30107192
    • 1992-11-11
    • SANWA KIZAI CO LTD
    • TORIKAI MITSUTOSHITAKAHASHI HIDEO
    • B60L13/00E21B7/20H01R41/00H02P23/00H02P23/07H02P25/10
    • PURPOSE:To reduce the number of wires by installing positive-phase and negative-phase power supply paths between a power supply and a motor, controlling a channel switching valve by discriminating the phase of a signal transmitted on a common intermediate path, thereby feeding power on the common intermediate path along with a control signal. CONSTITUTION:A power supply circuit between a power supply 37 and a motor 29 comprises a first positive-phase path 43 an intermediate path 40 a second positive-phase path 45 for transmitting a signal in the state of positive-phase over the entire process, and a first negative-phase circuit 44 the intermediate path 40 a second negative-phase circuit 46 for transmitting a positive-phase signal obtained by inverting a negative-phase signal. In this regard, a switch 47 on an operating board 38 is operated such that the phase of signal corresponds with the operating direction of a channel switching valve 30. Since the phase of a signal transmitted on the intermediate path 40 is discriminated by means of a negative-phase relay CR 3 and the channel switching valve 30 is controlled based on the discrimination result, power can be fed along with a control signal on a common trolley duct bus 18.