-
公开(公告)号：US20190234049A1
公开(公告)日：2019-08-01
申请号：US16259128
申请日：2019-01-28
CPC分类号： E02F9/2217 , E02F9/2292 , E02F9/2296 , F15B11/17 , F15B21/14 , F15B2211/20515 , F15B2211/20523 , F15B2211/20546 , F15B2211/20569 , F15B2211/20576 , F15B2211/212 , F15B2211/3111 , F15B2211/40515 , F15B2211/41509 , F15B2211/41572 , F15B2211/41581 , F15B2211/426 , F15B2211/6346 , F15B2211/6651 , F15B2211/6652 , F15B2211/6658 , F15B2211/7053 , F15B2211/7058 , F15B2211/7135 , F15B2211/75 , F15B2211/761
摘要： The present invention relates to a work machine having at least one hydraulic actuator for actuating a piece of working equipment and having a first displacement unit that is driven by a drive assembly of the work machine and that feeds the hydraulic actuator with hydraulic medium from a hydraulic tank, wherein at least one second displacement unit is provided that is driven by the drive assembly and that feeds the hydraulic actuator and/or further hydraulic consumers with hydraulic medium from a hydraulic tank in the working mode and that is drivable during a recovery mode by the hydraulic volume displaced by the at least one hydraulic actuator or by a hydraulic consumer to feed kinetic energy back to the drive assembly.
-
公开(公告)号：US09932215B2
公开(公告)日：2018-04-03
申请号：US14391999
申请日：2013-04-10
发明人： Gaetan Billaud , Nicolas Gales , Laurent Gicquel , Nathalie LeBeuze , Gilles Siegwald , Allen C. Olheiser
IPC分类号： G06F7/70 , G06F19/00 , G06G7/00 , G06G7/76 , B66F9/22 , E02F3/34 , E02F9/20 , E02F9/22 , B66F9/065 , B60G17/056 , F15B1/02
CPC分类号： B66F9/22 , B60G17/056 , B60G2300/022 , B60G2400/95 , B66F9/065 , B66F9/0655 , E02F3/3414 , E02F9/2033 , E02F9/2203 , F15B1/021 , F15B2211/41581 , F15B2211/426 , F15B2211/625 , F15B2211/6336 , F15B2211/6346 , F15B2211/761 , F15B2211/8606
摘要： Disclosed are power machines and lift arm suspension or ride control systems for use thereon. A lift arm assembly is pivotally coupled to a frame of the power machine and is capable of being raised and lowered. A selectively activated lift arm suspension system is operably coupled to the lift arm assembly. A controller is coupled to the suspension system and configured to determine whether the lift arm assembly has moved more than a threshold amount. The controller deactivates the lift arm suspension system in response to determining that the lift arm assembly has moved more than the threshold amount.
-
3.发明授权公开(公告)号：US09360023B2
公开(公告)日：2016-06-07
申请号：US13803861
申请日：2013-03-14
发明人： Joseph T. Yahner
CPC分类号： F15B1/02 , B66F9/22 , F15B21/14 , F15B2211/20569 , F15B2211/30565 , F15B2211/353 , F15B2211/40515 , F15B2211/41581 , F15B2211/625 , F15B2211/6346 , F15B2211/665 , F15B2211/6654 , F15B2211/7052 , F15B2211/75 , F15B2211/761
摘要： A hydraulic system has a cylinder and ram assembly that raises and lowers a load carrying carriage on a material handling vehicle. The fluid exhausting from the cylinder, while the carriage is lowering, is controlled to recover energy from that fluid. A first path routes the exhausting fluid to drive the pump as a hydraulic motor. A second path routes the exhausting fluid to a reservoir, bypassing the pump. In a first lowering mode, the second path is closed and the first path is opened. In a second lowering mode, both the first and second paths are open and the flow through each one is proportionally controlled. In a third lowering mode, only the second path is opened. The mode to use is selected based on the desired lowering speed of the carriage.
摘要翻译： 液压系统具有气缸和冲压器组件，其在物料搬运车辆上升高并降低载重台车。 控制从气缸排出的液体，同时滑架下降，以从该流体中回收能量。 第一路径将排气流体作为液压马达驱动泵。 第二条路径将排出的流体路由到储存器，绕过泵。 在第一降低模式中，第二路径被关闭并且第一路径被打开。 在第二降低模式中，第一和第二路径都是打开的，并且通过每个路径的流量被成比例地控制。 在第三降低模式中，仅打开第二路径。 基于所要求的滑架下降速度来选择要使用的模式。
-
公开(公告)号：US20160090997A1
公开(公告)日：2016-03-31
申请号：US14495960
申请日：2014-09-25
发明人： Thomas Johnson
IPC分类号： F15B11/028
CPC分类号： F15B11/028 , E02F9/226 , E02F9/2267 , F15B11/165 , F15B2211/212 , F15B2211/265 , F15B2211/3111 , F15B2211/3127 , F15B2211/41572 , F15B2211/41581 , F15B2211/428 , F15B2211/50563 , F15B2211/511 , F15B2211/5159 , F15B2211/528 , F15B2211/57 , F15B2211/605 , F15B2211/6051 , F15B2211/625 , F15B2211/761 , F15B2211/8609
摘要： A hydraulic system is provided, the hydraulic system including a hydraulic load defining a first chamber and a second chamber. Additionally, the hydraulic system includes a pressure source, a fluid storage vessel, a load sense line, and a spool valve. The spool valve fluidly connects the fluid storage vessel to one of the first or second chambers and fluidly connects the pressure source to the other of the first or second chambers. A bypass line is also provided defining a flow path between the hydraulic load and the fluid storage vessel that bypasses the spool valve. Fluid flow may encounter less resistance through the bypass line, such that the hydraulic system may run more efficiently and with a reduced risk for cavitation in the hydraulic load.
摘要翻译： 提供了液压系统，液压系统包括限定第一室和第二室的液压负载。 此外，液压系统包括压力源，流体存储容器，负载感测线和滑阀。 滑阀将流体存储容器流体地连接到第一或第二腔室中的一个，并将压力源流体地连接到第一或第二腔室中的另一个。 还提供了旁路管线，其限定了绕过滑阀的液压负载和流体存储容器之间的流动路径。 流体流动可能通过旁路管线遇到较小的阻力，使得液压系统可以更有效地运行并且降低液压负载中的空化风险。
-
公开(公告)号：US20150368878A1
公开(公告)日：2015-12-24
申请号：US14764220
申请日：2013-12-13
发明人： Kye Hyun CHOI , Jong Hyung YIM , Sang Hoon LEE , Ho Youn LEE
CPC分类号： E02F9/2203 , E02F3/32 , E02F3/435 , E02F9/2285 , E02F9/2292 , F15B2211/355 , F15B2211/41581 , F15B2211/426 , F15B2211/6316 , F15B2211/6355 , F15B2211/6658
摘要： Disclosed is a construction equipment including: a boom operating unit including a boom, a boom cylinder, and a boom head and rod return solenoids for controlling the extension of the boom by controlling the ascending and descending of the boom cylinder; an arm operating unit comprising an arm and an arm cylinder so as to move the arm by controlling the extension of the arm cylinder; and a control unit for generating a flow path connection signal in at least a part of the boom head and rod return solenoids upon operation of an arm lever in a boom float mode so as to control the boom cylinder.
摘要翻译： 公开了一种施工设备，包括：起重臂操作单元，其包括起重臂，动臂缸，以及用于通过控制悬臂液压缸的上升和下降来控制悬臂的延伸的悬臂头和杆返回螺线管; 臂操作单元，其包括臂和臂气缸，以便通过控制臂气缸的延伸来移动臂; 以及控制单元，用于在臂悬臂模式下操作臂杆时，在悬臂头部和杆返回螺线管的至少一部分中产生流路连接信号，以控制动臂缸。
-
公开(公告)号：US20150184683A1
公开(公告)日：2015-07-02
申请号：US14407473
申请日：2013-08-02
发明人： Takayuki Ogawa
IPC分类号： F15B15/16
CPC分类号： F15B15/16 , B61F5/245 , F15B15/18 , F15B15/202 , F15B15/204 , F15B2211/3058 , F15B2211/41581 , F15B2211/50518 , F15B2211/513 , F15B2211/5159 , F15B2211/7053 , F15B2215/30 , F16F9/49
摘要： An actuator according to the present invention includes a telescopic body, a tank, a first opening/closing valve provided in a first passage that connects a rod side chamber to a piston side chamber, a second opening/closing valve provided in a second passage that connects the piston side chamber to the tank, a pump that supplies a fluid to the rod side chamber, a motor that, drives the pump, an exhaust passage that connects the rod side chamber to the tank, and a valve element provided in the exhaust passage, wherein a telescopic unit is formed by integrating the telescopic body, the first opening/closing valve, and the second opening/closing valve, a driving unit is formed by integrating the pump and the motor, and the telescopic unit and the driving unit are provided as separate bodies.
摘要翻译： 根据本发明的致动器包括伸缩体，罐，设置在将杆侧室连接到活塞侧室的第一通道中的第一开/关阀，设置在第二通道中的第二开/关阀， 将活塞侧室与罐连接，向杆侧室供给流体的泵，驱动泵的马达，将杆侧室与罐连接的排气通路和设置在排气口中的阀芯 通过使所述伸缩体，所述第一开闭阀和所述第二开闭阀一体化而形成伸缩单元，驱动单元通过使所述泵和所述马达一体化而形成，所述伸缩单元和所述驱动单元 作为单独的机构提供。
-
公开(公告)号：US20150152900A1
公开(公告)日：2015-06-04
申请号：US14406535
申请日：2013-07-23
CPC分类号： F15B21/14 , E02F9/2095 , E02F9/2217 , E02F9/2285 , E02F9/2292 , E02F9/2296 , F15B2211/20507 , F15B2211/40515 , F15B2211/411 , F15B2211/41527 , F15B2211/41581 , F15B2211/46 , F15B2211/7053 , F15B2211/7058 , F15B2211/761
摘要： A control system for a construction machine includes: a boom cylinder; a boom switching valve; a fluid pressure motor adapted to drive a motor generator by being rotated by means of a return fluid guided from a piston side chamber; a regeneration control valve adapted to adjust a first supply amount serving as a supply amount of a working fluid supplied from the piston side chamber to the boom switching valve, and a second supply amount serving as a supply amount of the working fluid supplied from the piston side chamber to the fluid pressure motor; and a controller adapted to control the regeneration control valve so that the second supply amount becomes smaller than the first supply amount in a case where a stroke amount of a spool becomes an upper limit value or more.
摘要翻译： 一种建筑机械的控制系统，包括：动臂缸; 动臂切换阀; 流体压力马达，其适于通过由活塞侧室引导的返回流体旋转来驱动马达发电机; 再生控制阀，其适于将从活塞侧室供给的工作流体的供给量的第一供给量调整到动臂切换阀，以及作为从活塞供给的工作流体的供给量的第二供给量 侧室到流体压力马达; 以及控制器，其适于在所述线轴的行程量变为上限值以上的情况下控制所述再生控制阀使得所述第二供给量变得小于所述第一供给量。
-
公开(公告)号：US20150040548A1
公开(公告)日：2015-02-12
申请号：US13963150
申请日：2013-08-09
申请人： Caterpillar Inc.
发明人： Susan E. Bieker , Eric P. Jakubiak , Dennis R. Barber , John J. Kaufman , Edward W. Mate , Scott D. Vollmer , Michael D. Hudson , Moses I. Akpan
IPC分类号： F15B15/02
CPC分类号： F15B15/02 , E02F9/0866 , E02F9/0875 , E02F9/226 , F01P7/044 , F15B2211/40515 , F15B2211/40592 , F15B2211/41581 , F15B2211/46 , F15B2211/50509 , F15B2211/605 , F16H61/433 , F16H61/465
摘要： A hydraulic fan circuit is provided. The hydraulic fan circuit includes a tank, a motor having a fluid inlet and a fluid outlet and a pump to draw fluid at a low pressure from the tank and discharge the fluid at elevated pressures to the motor via the fluid inlet. The hydraulic fan circuit further includes a directional control valve disposed between the fluid outlet of the motor and the tank. The directional control valve is operable to move between a flow blocking position and a flow passing position. Further, the directional control valve is configured to reduce a positive speed of the motor below a lowest positive speed attainable through control of pump output. Furthermore, the hydraulic fan circuit includes a pressure control circuit configured to provide a pilot fluid flow at varying pressure to move the directional control valve.
摘要翻译： 提供液压风扇电路。 液压风扇回路包括油箱，具有流体入口和流体出口的马达和用于从罐中抽取低压的流体并经由流体入口将流体以升高的压力排出到马达的泵。 液压风扇回路还包括设置在电动机的流体出口和罐之间的方向控制阀。 方向控制阀可操作以在阻流位置和流动通过位置之间移动。 此外，方向控制阀被配置为将电动机的正转速降低到通过控制泵输出可获得的最低正向速度。 此外，液压风扇回路包括压力控制回路，该压力控制回路构造成在变化的压力下提供先导流体流动以移动方向控制阀。
-
9.发明申请公开(公告)号：US20140260222A1
公开(公告)日：2014-09-18
申请号：US13803861
申请日：2013-03-14
发明人： Joseph T. Yahner
IPC分类号： F15B1/02
CPC分类号： F15B1/02 , B66F9/22 , F15B21/14 , F15B2211/20569 , F15B2211/30565 , F15B2211/353 , F15B2211/40515 , F15B2211/41581 , F15B2211/625 , F15B2211/6346 , F15B2211/665 , F15B2211/6654 , F15B2211/7052 , F15B2211/75 , F15B2211/761
摘要： A hydraulic system has a cylinder and ram assembly that raises and lowers a load carrying carriage on a material handling vehicle. The fluid exhausting from the cylinder, while the carriage is lowering, is controlled to recover energy from that fluid. A first path routes the exhausting fluid to drive the pump as a hydraulic motor. A second path routes the exhausting fluid to a reservoir, bypassing the pump. In a first lowering mode, the second path is closed and the first path is opened. In a second lowering mode, both the first and second paths are open and the flow through each one is proportionally controlled. In a third lowering mode, only the second path is opened. The mode to use is selected based on the desired lowering speed of the carriage.
摘要翻译： 液压系统具有气缸和冲压器组件，其在物料搬运车辆上升高并降低载重台车。 控制从气缸排出的液体，同时滑架下降，以从该流体中回收能量。 第一路径将排气流体作为液压马达驱动泵。 第二条路径将排出的流体路由到储存器，绕过泵。 在第一降低模式中，第二路径被关闭并且第一路径被打开。 在第二降低模式中，第一和第二路径都是打开的，并且通过每个路径的流量被成比例地控制。 在第三降低模式中，仅打开第二路径。 基于所要求的滑架下降速度来选择要使用的模式。
-
公开(公告)号：US20140010688A1
公开(公告)日：2014-01-09
申请号：US14006116
申请日：2011-04-19
申请人： Sung-Gon Kim
发明人： Sung-Gon Kim
IPC分类号： F04B17/00
CPC分类号： F04B17/00 , E02F9/2203 , E02F9/2217 , E02F9/2232 , E02F9/226 , E02F9/2271 , E02F9/2296 , F15B11/003 , F15B20/007 , F15B2211/30515 , F15B2211/3116 , F15B2211/355 , F15B2211/40515 , F15B2211/41581 , F15B2211/50536 , F15B2211/5159 , F15B2211/7128
摘要： Disclosed is a hydraulic circuit for controlling booms of construction equipment, wherein working oil which is relieved from a large chamber of a boom cylinder passes through an orifice so as to prevent the boom from lowering if an overload is applied when the boom is not being operated. The hydraulic circuit for controlling booms of construction equipment includes: a boom cylinder which is connected to a hydraulic pump via a first path and a second path; a boom control valve which is mounted on the path between the hydraulic pump and the boom cylinder; a holding valve which is mounted between the boom control valve and the first path of the boom cylinder and prevents the natural lowering of a boom when the boom control valve is in a neutral position; a port relief valve which is mounted to the first path at the lower side of a holding poppet and relieves working oil when an overload is generated at the first path; and an orifice valve which is mounted at the lower side of the port relief valve, relieves the working oil which passes through the port relief valve when the boom control valve is neutral so as to relieve the working oil through an orifice, and discharges the working oil which passes through the port relief valve to a hydraulic tank at the time of conversion due to boom-up pilot signal pressure which is applied to the boom control valve.
摘要翻译： 公开了一种用于控制施工设备的起重臂的液压回路，其中从动臂缸的大室释放的工作油通过孔口，以便在悬臂未被操作时施加过载时防止吊杆降低 。 用于控制施工设备的起重臂的液压回路包括：动臂缸，其通过第一路径和第二路径连接到液压泵; 悬臂控制阀安装在液压泵和动臂缸之间的路径上; 保持阀安装在起重臂控制阀和动臂缸的第一路径之间，并且当悬臂控制阀处于中立位置时防止吊杆自然降低; 端口安全阀，其在保持提升阀的下侧安装到第一路径，并且当在第一路径处产生过载时减轻工作油; 并且安装在端口安全阀的下侧的孔口阀，当臂臂控制阀处于中立状态时，减轻通过端口安全阀的工作油，以便通过孔口释放工作油，并排出工作 由于施加到起重臂控制阀上的悬臂升高先导信号压力，在转换时通过端口安全阀的液压油通过。
-
-
-
-
-
-
-
-
-
搜索结果
201 条记录 (耗时 0.02 秒)
