公开(公告)号：US06339929B1

公开(公告)日：2002-01-22

申请号：US09625416

申请日：2000-07-25

申请人： Tsutomu Udagawa ,  Teruo Igarashi ,  Masami Ochiai ,  Toshimi Sakai ,  Kazuhisa Ishida ,  Kouji Funato

发明人： Tsutomu Udagawa ,  Teruo Igarashi ,  Masami Ochiai ,  Toshimi Sakai ,  Kazuhisa Ishida ,  Kouji Funato

IPC分类号： F16D3102

CPC分类号： E02F9/2285 ,  B66C23/86 ,  E02F9/123 ,  E02F9/128 ,  F15B11/024 ,  F15B21/087 ,  F15B2211/20515 ,  F15B2211/30505 ,  F15B2211/30525 ,  F15B2211/3058 ,  F15B2211/3116 ,  F15B2211/31576 ,  F15B2211/329 ,  F15B2211/40515 ,  F15B2211/41536 ,  F15B2211/426 ,  F15B2211/50518 ,  F15B2211/55 ,  F15B2211/6313 ,  F15B2211/6336 ,  F15B2211/6654 ,  F15B2211/6656 ,  F15B2211/7058 ,  F15B2211/75

摘要： A swivel control apparatus according to the present invention , includes: a hydraulic pump; a hydraulic motor for swiveling which is driven by hydraulic oil emitted from the hydraulic pump; a control valve which controls a flow of hydraulic oil which is supplied from the hydraulic pump to the hydraulic motor for swiveling, and at a neutral position of the control valve cuts off from one another a pair of ports which communicate to input and output ports of the hydraulic motor; a valve device which communicates and cuts off from one another a pair of conduits which are respectively connected to the input and output ports of the hydraulic motor for swiveling; a pressure detection device which detects respective pressures in the two conduits and outputs pressure signals; a rotational speed detection device which detects a physical quantity based upon a rotational speed of the hydraulic motor for swiveling and outputs a rotational speed signal; a mode selection device which selects a neutral brake mode and a neutral free mode; and a control device which controls driving of the valve device so as to cut off the two conduits from one another when the neutral brake mode is selected, and so as to communicate the two conduits based upon the pressure signals and the rotational speed signal when the neutral free mode is selected.

摘要翻译： 根据本发明的旋转控制装置包括：液压泵; 用于从液压泵排出的液压油驱动的用于旋转的液压马达; 控制阀，其控制从液压泵供给到用于旋转的液压马达的液压油的流动，并且在控制阀的中间位置彼此切断一对连通到输入和输出端口的端口 液压马达; 一个彼此连通和切断一对导管的阀装置，它们分别连接到液压马达的输入和输出端口用于转动; 压力检测装置，其检测两个管道中的相应压力并输出压力信号; 转速检测装置，其基于用于旋转的液压马达的转速来检测物理量，并输出转速信号; 选择中立制动模式和中立自由模式的模式选择装置; 以及控制装置，其控制所述阀装置的驱动，以在选择所述中立制动模式时将所述两个管道彼此切断，并且当所述压力信号和所述转速信号为 选择中性自由模式。

公开(公告)号：US06644629B1

公开(公告)日：2003-11-11

申请号：US09807460

申请日：2001-05-01

申请人： Shinobu Higashi ,  Kazuhisa Ishida ,  Kouji Funato ,  Toshimi Sakai ,  Masami Ochiai ,  Teruo Igarashi ,  Akira Nakayama ,  Tsutomu Udagawa

发明人： Shinobu Higashi ,  Kazuhisa Ishida ,  Kouji Funato ,  Toshimi Sakai ,  Masami Ochiai ,  Teruo Igarashi ,  Akira Nakayama ,  Tsutomu Udagawa

IPC分类号： B66D108

CPC分类号： B66D1/48 ,  B66D1/56

摘要： A winch over-winding prevention apparatus includes: a winch drum that is driven for up/down hoist in response to a command issued through an operating lever; a stop switch that is activated when a suspended object raised or lowered as a hoisting cable wound around the winch drum is further taken up or fed out is hoisted up to a predetermined stop position; and a stop device that stops drive of the winch drum when the stop switch is activated, and further includes: a speed detection device that detects a hoist speed of the suspended object; a speed reduction device that reduces a drive speed of the winch drum once the suspended object reaches a predetermined speed reduction start position; and a speed reduction control device that calculates a deceleration rate of the winch drum in correspondence to the hoist speed of the suspended object detected by the speed detection device and controls drive of the speed reduction device in response to a speed reduction command corresponding to the deceleration rate.

摘要翻译： 绞车过卷绕防止装置包括：响应于通过操作杆发出的指令而驱动上/下升降机的绞盘鼓; 当作为卷绕在绞盘鼓上的提升缆索升起或降低的悬挂物体进一步被卷取或送出的停止开关被提升到预定的停止位置; 以及停止装置，其在所述停止开关被启动时停止所述绞盘鼓的驱动，并且还包括：速度检测装置，其检测所述悬挂物体的提升速度; 减速装置，一旦悬挂物体到达预定的减速开始位置，就降低绞车鼓的驱动速度; 以及减速控制装置，其根据由速度检测装置检测到的悬架物体的提升速度来计算绞盘鼓的减速度，并根据对应于减速度的减速指令来控制减速装置的驱动 率。