-
公开(公告)号：US4922784A
公开(公告)日：1990-05-08
申请号：US318003
申请日：1989-03-02
申请人： Sachio Hidaka , Yoshiaki Fujimoto , Takao Tani
发明人： Sachio Hidaka , Yoshiaki Fujimoto , Takao Tani
CPC分类号： B66C13/56 , G05G5/06 , G05G2009/0477 , Y10T74/20636
摘要： A detent device for a control lever includes a cam which moves integral with a control lever by operation of the control lever. A piston is mounted such that the state wherein the end thereof comes into sliding contact with the cam, during movement of the cam, a pressure chamber is formed to communicate with a part of the piston opposite the sliding surface. A spring is provided within the pressure chamber to bias the piston toward the cam. The cam is provided with a detent portion in a part of the surface with which the piston contacts the detent portion. The sliding resistance of the end of the piston is greater at the detent position of the control lever, than at the other locations. A detector detects that the end of the piston is positioned at said detent portion. An oil-pressure supply device supplies oil pressure to the pressure chamber on the basis of a detection signal from the detector. The detector includes an electric contact constituted by a piston and a cam.
-
公开(公告)号：US5156065A
公开(公告)日：1992-10-20
申请号：US749340
申请日：1991-08-23
申请人： Yoshiaki Fujimoto , Sachio Hidaka
发明人： Yoshiaki Fujimoto , Sachio Hidaka
CPC分类号： B60K37/06 , B66C13/56 , F15B13/0424 , F15B13/14 , G05G5/03 , G05G5/06 , B60K2350/102 , G05G2009/04766 , Y10T74/20636
摘要： A switch mechanism 70 discriminates as to whether a lever 40 is in a detent position or not. When the lever is in the detent position, a detent device 80 is activated by a fluid pressure to produce a force for holding the lever in the detent position. The operation of the detent device is dismissed when the lever is not in the detent position. A pressure sensor 97 detects whether the operator's hand is in touch with the grip 49 of the lever, thus determining whether the operation of the detent device 80 is necessary. An actuator 30 is operated or stopped in response to manipulation of the lever. When the lever is moved to a position other than the detent position, an operation reaction force of a level corresponding to the load pressure in the actuator is applied by reaction force device 60, 60' to the lever so as to enable the operator to sense any change in the load pressure and starting operation of the actuator. When the lever is in the detent position, the reaction force device 60, 60' does not operate so as to enhance the efficiency of the operation of the detent device 80 for holding the lever.
摘要翻译： 开关机构70判别杠杆40是否处于止动位置。 当杠杆处于止动位置时，止动装置80由流体压力启动以产生用于将杠杆保持在制动位置的力。 当控制杆不处于止动位置时，止动装置的操作被解除。 压力传感器97检测操作者的手是否与杆的把手49接触，从而确定是否需要制动装置80的操作。 响应于杠杆的操纵，致动器30被操作或停止。 当杠杆移动到除了止动位置之外的位置时，通过反作用力装置60,60'将与致动器中的负载压力相对应的水平的操作反作用力施加到杠杆，以使操作者能够感测 执行器的负载压力和启动操作的任何变化。 当操纵杆处于止动位置时，反作用力装置60,60'不起作用以提高用于固定杠杆的止动装置80的操作效率。
-
公开(公告)号：US5058451A
公开(公告)日：1991-10-22
申请号：US433170
申请日：1989-11-08
申请人： Yoshiaki Fujimoto , Sachio Hidaka
发明人： Yoshiaki Fujimoto , Sachio Hidaka
CPC分类号： G05G1/06 , B60K37/06 , B66C13/56 , F15B13/0424 , F15B13/14 , G05G5/03 , G05G5/06 , B60K2350/102 , G05G2009/04766 , Y10T74/20636
摘要： A switch mechanism 70 discriminates whether a lever 40 is in a detent position or not. When the lever is in the detent position, a detent device 80 is activated by a fluid pressure to produce a force for holding the lever in the detent position. The operation of the detent device is dismissed when the lever is not in the detent position. A pressure sensor 97 detects whether the operator's hand is in touch with the grip 49 of the lever, thus determining whether the operation of the detent device 80 is necessary. An actuator 30 is operated or stopped in response to manipulation of the lever. When the lever is moved to a position other than the detent position, an operation reaction force of a level corresponding to the load pressure in the actuator is applied by reaction force device 60, 60' to the lever so as to enable the operator to sense any change in the load pressure and start of operation of the actuator. When the lever is in the detent position, the reaction force device 60, 60' does not operate so as to enhance the efficiency of the operation of the detent device 80 for holding the lever.
-
公开(公告)号：US5102102A
公开(公告)日：1992-04-07
申请号：US584380
申请日：1990-09-18
申请人： Sachio Hidaka , Yoshiaki Fujimoto
发明人： Sachio Hidaka , Yoshiaki Fujimoto
IPC分类号： B66D1/28 , B66C13/56 , B66D1/44 , F15B13/042 , F15B13/14
CPC分类号： F15B13/0422 , B66C13/56 , B66D1/44 , F15B13/14
摘要： An apparatus for controlling operating reaction of winch comprising a reaction device whose output is variable for applying the output as an operating reaction to an operating lever of a winch, load detection means for detecting a lifting load of the winch, lever operating amount detection means for detecting an operating amount of said operating lever, and a controller for indicating an output having a value corresponding to the lifting load and the lever operating amount to said reaction device on the basis of the detection amount by said load detection means and said lever operating amount detection means.
-
公开(公告)号：US5044608A
公开(公告)日：1991-09-03
申请号：US426671
申请日：1989-10-26
申请人： Sachio Hidaka , Yoshiaki Fujimoto
发明人： Sachio Hidaka , Yoshiaki Fujimoto
IPC分类号： B66C13/56 , B66D1/44 , F15B13/042 , F15B13/14
CPC分类号： F15B13/0422 , B66C13/56 , B66D1/44 , F15B13/14
摘要： An operating force controlling device includes a pair of reactive force mechanisms (70, 70') disposed in an opposing relationship to each other in the direction of operation of an operating lever (60). A load pressure of a motor (30) is detected by a detector (91, 91'), and a controlling signal is outputted from a controller (90) in response to the load pressure. A pilot pressure is outputted from an electromagnetic proportional pressure reducing valve (80) in response to the control signal. The pilot pressure is inputted into one of the chambers of the reactive force mechanisms (70, 70') which moves a rod (72, 72') to project, to apply an operation reactive force to the lever (60). The operation reactive force is controlled such that the rate of change thereof may be high when the load pressure of the motor (30) is low but may be low when the load pressure is high. A plurality of control patterns wherein the rate of change of the operation reactive force to the load pressure is different from each other are set to a controller. As an operator manually senses a change of the operation reactive force which is operating the lever (60), a change of the load pressure is sensed and initiation of movement of a suspended cargo is sensed.
-
公开(公告)号：US4955283A
公开(公告)日：1990-09-11
申请号：US316131
申请日：1989-02-27
IPC分类号： E02F3/43 , E02F9/22 , F15B11/08 , F15B13/01 , F15B13/042
CPC分类号： E02F9/2203 , F15B13/01 , F15B13/015 , F15B13/0422
摘要： A hydraulic circuit suitable for use on power shovel or other construction machines, more specifically a hydraulic circuit for a cylinder in a hydraulic power transmission, of the type which is adapted to control pressurized oil flows to and from two oil chambers in the cylinder by switching the position of a directional control valve in communication with a pressurized oil source. The hydraulic circuit includes a logic valve provided between the directional control valve and a load-holding oil chamber in the cylinder. The logic circuit has first and second ports connected to the directional control valve and said load-holding oil chamber, respectively. A selector valve is responsive to the switching of the directional control valve to communicate a spring chamber of the logic valve with a conduit between the first port and the directional control valve in an operational phase of supplying pressurized oil to a load lowering chamber of the cylinder and to communicate the spring chamber with the second port in other operational phases.
摘要翻译： 一种适用于铲斗或其他施工机械的液压回路，更具体地说是用于液压动力传动装置中的液压缸的液压回路，其适于通过切换来控制加压油流入和流出气缸中的两个油室 与加压油源连通的方向控制阀的位置。 液压回路包括设置在方向控制阀和气缸中的负载保持油室之间的逻辑阀。 逻辑电路具有分别连接到方向控制阀和负载保持油室的第一和第二端口。 选择阀响应于方向控制阀的切换，以在将加压油供应到气缸的负载降低室的操作阶段中将逻辑阀的弹簧室与第一端口和方向控制阀之间的导管连通 并在其他操作阶段将弹簧室与第二个端口通信。
-
公开(公告)号：US4788820A
公开(公告)日：1988-12-06
申请号：US50025
申请日：1987-05-15
申请人： Hiroaki Sakai , Sachio Hidaka
发明人： Hiroaki Sakai , Sachio Hidaka
摘要： A hydraulic circuit for a large crane furnished with a counterweight carriage detachably connectable to the swivel unit of the crane. The hydraulic circuit includes first and second variable displacement pumps for supplying the working fluid to a hydraulic motor for driving the swivel unit and a hydraulic motor for driving the counterweight carriage, respectively, first and second control circuits including valves for controlling the respective discharge rates of the first and second variable displacement pumps, respectively, in accordance with a signal pressure provided by a third control valve for controlling the operation of the swivel unit and the counterweight carriage, a hydraulic circuit for joining the flows of the working fluid discharged from the first and second variable displacement pumps when the swivel unit is operated without the counterweight carriage, and a changeover mechanism for selectively changing the state of the first flow control circuit so that the discharge rate of the first variable displacement pump is regulated properly according to the operating condition of the swivel unit. The discharge rates of the first and second variable displacement pumps are regulated so that the counterweight carriage is driven for movement in perfect synchronism with the swivel motion of the swivel unit.
摘要翻译： 一种用于大型起重机的液压回路，其具有可拆卸地连接到起重机的旋转单元的配重托架。 液压回路包括用于将工作流体供给到用于驱动旋转单元的液压马达的第一和第二可变排量泵和用于驱动配重托架的液压马达，第一和第二控制回路包括用于控制相应的排出速率的阀 第一和第二可变容积泵分别根据由用于控制旋转单元和配重滑架的操作的第三控制阀提供的信号压力，用于连接从第一和第二排出的工作流体的流动的液压回路 以及第二可变排量泵，当旋转单元在没有配重托架的情况下操作时，以及切换机构，用于选择性地改变第一流量控制电路的状态，使得根据操作条件适当地调节第一可变排量泵的排出速率 的旋转单元。 调节第一和第二可变排量泵的排放速率，使得配重托架被驱动以与旋转单元的旋转运动完美地同步运动。
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.023 秒)