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公开(公告)号：US20170274930A1
公开(公告)日：2017-09-28
申请号：US15529336
申请日：2015-11-24
发明人： Hao Zhang , Raymond Collett , Rajneesh Kumar , Qiang Wang , Miao Zhang , James Howland
CPC分类号： B62D5/075 , B62D5/10 , B62D12/00 , E02F9/0841 , E02F9/2203 , E02F9/2228 , E02F9/225 , E02F9/2285 , E02F9/2292 , E02F9/2296 , F15B11/162 , F15B13/022 , F15B13/025 , F15B13/044 , F15B2211/20553 , F15B2211/20576 , F15B2211/50563 , F15B2211/5151 , F15B2211/7142 , F15B2211/781
摘要： A hydraulic system (40) for a work machine comprising a priority circuit (41) including at least a first priority actuator (47, 48) and a priority control valve (58) for controlling the supply of hydraulic fluid to the first priority actuator (47, 48) and for providing a load sense signal indicative of the load acting on the first priority actuator (47, 48); an auxiliary circuit (42) including at least a first auxiliary actuator (51) and at least a first auxiliary control valve (80) for controlling the supply of hydraulic fluid to the first auxiliary actuator (51); at least a first pump (46) for producing a flow of hydraulic fluid; and a priority valve (74) for distributing the flow from the pump (46) to the priority circuit (41) and auxiliary circuit (42) for operating the respective actuators thereof, with priority being given to the priority circuit (41) as a function of the load sense signal.
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公开(公告)号：US11421713B2
公开(公告)日：2022-08-23
申请号：US15925821
申请日：2018-03-20
发明人： Jeff Cullman , Hao Zhang , Richard D. Kimpel , Zhesheng Jiang , Raymond Collett , Bogdan Kozul
摘要： A swing drive system for an excavator is provided which utilizes a prime mover mechanically connected to a first hydraulic pump/motor and a second hydraulic pump/motor mechanically connected to a swing mechanism. The system includes a hydraulic circuit connecting a hydraulic fluid reservoir, a hydraulic accumulator, the first hydraulic pump/motor, and the second hydraulic pump/motor. The system is operable in one mode where the second hydraulic pump/motor acts as a pump to retard movement of the swing mechanism and pressurized hydraulic fluid from the second hydraulic pump/motor is pumped into the hydraulic accumulator. The system is operable in another mode where the pressurized fluid from the hydraulic accumulator is used to assist the prime mover in driving hydraulic consumers, including the swing drive.
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公开(公告)号：US20210309287A1
公开(公告)日：2021-10-07
申请号：US17234120
申请日：2021-04-19
发明人： Hao Zhang , Raymond Collett , Rajneesh Kumar , Qiang Wang , Miao Zhang , James Howland
摘要： A hydraulic system (40) for a work machine comprising a priority circuit (41) including at least a first priority actuator (47, 48) and a priority control valve (58) for controlling the supply of hydraulic fluid to the first priority actuator (47, 48) and for providing a load sense signal indicative of the load acting on the first priority actuator (47, 48); an auxiliary circuit (42) including at least a first auxiliary actuator (51) and at least a first auxiliary control valve (80) for controlling the supply of hydraulic fluid to the first auxiliary actuator (51); at least a first pump (46) for producing a flow of hydraulic fluid; and a priority valve (74) for distributing the flow from the pump (46) to the priority circuit (41) and auxiliary circuit (42) for operating the respective actuators thereof, with priority being given to the priority circuit (41) as a function of the load sense signal.
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公开(公告)号：US20180209449A1
公开(公告)日：2018-07-26
申请号：US15925821
申请日：2018-03-20
发明人： Jeff Cullman , Hao Zhang , Richard D. Kimpel , Zhesheng Jiang , Raymond Collett , Bogdan Kozul
CPC分类号： F15B1/024 , E02F9/128 , E02F9/202 , E02F9/2217 , F15B7/003
摘要： A swing drive system for an excavator is provided which utilizes a prime mover mechanically connected to a first hydraulic pump/motor and a second hydraulic pump/motor mechanically connected to a swing mechanism. The system includes a hydraulic circuit connecting a hydraulic fluid reservoir, a hydraulic accumulator, the first hydraulic pump/motor, and the second hydraulic pump/motor. The system is operable in one mode where the second hydraulic pump/motor acts as a pump to retard movement of the swing mechanism and pressurized hydraulic fluid from the second hydraulic pump/motor is pumped into the hydraulic accumulator. The system is operable in another mode where the pressurized fluid from the hydraulic accumulator is used to assist the prime mover in driving hydraulic consumers, including the swing drive.
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公开(公告)号：US20170129473A1
公开(公告)日：2017-05-11
申请号：US15319959
申请日：2015-06-18
发明人： Hao ZHANG , Raymond Collett , Zhesheng JIANG , Blake CARL
IPC分类号： B60W20/11
CPC分类号： B60W20/11 , B60K6/387 , B60K6/48 , B60W10/02 , B60W10/06 , B60W10/08 , B60W10/26 , B60W2300/17 , Y10S903/93 , Y10S903/946
摘要： A control system for a working machine that includes a power consumer (14) includes a prime mover (12), an energy storage unit (24) for storing energy, an auxiliary power unit (20) for generating power or consuming power, the auxiliary power unit (20) having a first connection (20a) coupled to the prime mover (12) and a second connection couplable to the energy storage unit (24). A controller (18) operatively coupled to the prime mover (12) and operatively couplable to the power consumer (14) is configured to estimate a required power of the power consumer (14), and to command the prime mover (14) to operate at an optimal operating point that produces the estimated required power. Based on a relationship between power output capability of the prime mover and power consumption of the power consumer, the controller (18) is configured to at least one of command that excess power capacity from the prime mover be provided to the auxiliary power unit for storage in the energy storage unit, or command that energy stored in the energy storage unit be provided to the auxiliary power unit to drive the power consumer.
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公开(公告)号：US20140373522A1
公开(公告)日：2014-12-25
申请号：US14370795
申请日：2013-01-04
发明人： Jeff Cullman , Hao Zhang , Richard D. Kimpel , Zhesheng Jiang , Raymond Collett , Bogdan Kozul
IPC分类号： F15B1/02
CPC分类号： F15B1/024 , E02F9/128 , E02F9/202 , E02F9/2217 , F15B7/003
摘要： A swing drive system (11) for an excavator is provided which utilizes a prime mover (20) mechanically connected to a first hydraulic pump/motor (30) and a second hydraulic pump/motor (32) mechanically connected to a swing mechanism (70). The system includes a hydraulic circuit (31) connecting a hydraulic fluid reservoir (42), a hydraulic accumulator (40), the first hydraulic pump/motor (30), and the second hydraulic pump/motor (32). The system is operable in one mode where the second hydraulic pump/motor acts as a pump to retard movement of the swing mechanism and pressurized hydraulic fluid from the second hydraulic pump/motor is pumped into the hydraulic accumulator. The system is operable in another mode where the pressurized fluid from the hydraulic accumulator is used to assist the prime mover in driving hydraulic consumers (62,64,66), including the swing mechanism.
摘要翻译： 提供了一种用于挖掘机的摆动驱动系统（11），其利用机械地连接到第一液压泵/马达（30）的原动机（20）和机械连接到摆动机构（70）的第二液压泵/马达（32） ）。 该系统包括连接液压油箱（42），液压蓄能器（40），第一液压泵/马达（30）和第二液压泵/马达（32）的液压回路（31）。 该系统在一种模式中可操作，其中第二液压泵/马达用作泵以阻止回转机构的运动，并且来自第二液压泵/马达的加压液压流体被泵入液压蓄能器。 该系统在另一种模式下可操作，其中来自液压蓄能器的加压流体用于辅助原动机驱动包括摆动机构的液压消耗器（62,66,66）。
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公开(公告)号：US10160439B2
公开(公告)日：2018-12-25
申请号：US15319959
申请日：2015-06-18
发明人： Hao Zhang , Raymond Collett , Zhesheng Jiang , Blake Carl
摘要： A control system for a working machine that includes a power consumer (14) includes a prime mover (12), an energy storage unit (24) for storing energy, an auxiliary power unit (20) for generating power or consuming power, the auxiliary power unit (20) having a first connection (20a) coupled to the prime mover (12) and a second connection couplable to the energy storage unit (24). A controller (18) operatively coupled to the prime mover (12) and operatively couplable to the power consumer (14) is configured to estimate a required power of the power consumer (14), and to command the prime mover (14) to operate at an optimal operating point that produces the estimated required power. Based on a relationship between power output capability of the prime mover and power consumption of the power consumer, the controller (18) is configured to at least one of command that excess power capacity from the prime mover be provided to the auxiliary power unit for storage in the energy storage unit, or command that energy stored in the energy storage unit be provided to the auxiliary power unit to drive the power consumer.
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公开(公告)号：US10024341B2
公开(公告)日：2018-07-17
申请号：US14764794
申请日：2014-01-30
发明人： Hao Zhang , Jeff Cullman , Raymond Collett , James Howland , Nick White , Patrick Stegemann
摘要： A hybrid swing drive system (1) of a hydraulic construction machine includes a variable displacement hydraulic swing pump (3) operable by a prime mover (2); a hydraulic swing motor (16) for performing a swing function of the machine; an accumulator (10); a controller (244); a swing control valve assembly (15) disposed in a first hydraulic path extending from the swing pump to the swing motor, the swing control valve assembly having a first position fluidly connecting the swing pump to a first side of the swing motor and a second position fluidly connecting the swing pump to a second side of the swing motor; and an accumulator control valve (12) having an open position fluidly connecting the accumulator to the first hydraulic path at an accumulator control valve connection point and a closed position fluidly isolating the accumulator from the first hydraulic path.
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公开(公告)号：US09926946B2
公开(公告)日：2018-03-27
申请号：US14370795
申请日：2013-01-04
发明人： Jeff Cullman , Hao Zhang , Richard D. Kimpel , Zhesheng Jiang , Raymond Collett , Bogdan Kozul
CPC分类号： F15B1/024 , E02F9/128 , E02F9/202 , E02F9/2217 , F15B7/003
摘要： A swing drive system (11) for an excavator is provided which utilizes a prime mover (20) mechanically connected to a first hydraulic pump/motor (30) and a second hydraulic pump/motor (32) mechanically connected to a swing mechanism (70). The system includes a hydraulic circuit (31) connecting a hydraulic fluid reservoir (42), a hydraulic accumulator (40), the first hydraulic pump/motor (30), and the second hydraulic pump/motor (32). The system is operable in one mode where the second hydraulic pump/motor acts as a pump to retard movement of the swing mechanism and pressurized hydraulic fluid from the second hydraulic pump/motor is pumped into the hydraulic accumulator. The system is operable in another mode where the pressurized fluid from the hydraulic accumulator is used to assist the prime mover in driving hydraulic consumers (62,64,66), including the swing mechanism.
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公开(公告)号：US20160010663A1
公开(公告)日：2016-01-14
申请号：US14764794
申请日：2014-01-30
发明人： Hao Zhang , Jeff Cullman , Raymond Collett , James Howland , Nick White , Patrick Stegemann
CPC分类号： F15B11/08 , E02F9/128 , E02F9/2066 , E02F9/2217 , E02F9/2285 , E02F9/2289 , F15B1/024 , F15B21/14 , F15B2201/00 , F15B2211/20523 , F15B2211/20546 , F15B2211/20569 , F15B2211/20576 , F15B2211/212 , F15B2211/30575 , F15B2211/30595 , F15B2211/6309 , F15B2211/6336 , F15B2211/7058 , F15B2211/715 , F15B2211/88
摘要： A hybrid swing drive system (1) of a hydraulic construction machine includes a variable displacement hydraulic swing pump (3) operable by a prime mover (2); a hydraulic swing motor (16) for performing a swing function of the machine; an accumulator (10); a controller (244); a swing control valve assembly (15) disposed in a first hydraulic path extending from the swing pump to the swing motor, the swing control valve assembly having a first position fluidly connecting the swing pump to a first side of the swing motor and a second position fluidly connecting the swing pump to a second side of the swing motor; and an accumulator control valve (12) having an open position fluidly connecting the accumulator to the first hydraulic path at an accumulator control valve connection point and a closed position fluidly isolating the accumulator from the first hydraulic path.
摘要翻译： 液压施工机械的混合摆动驱动系统（1）包括可由原动机（2）操作的可变排量液压摆动泵（3）。 用于执行机器的摆动功能的液压回转马达（16）; 蓄电池（10）; 控制器（244）; 摆动控制阀组件（15），其布置在从所述回转泵延伸到所述回转马达的第一液压路径中，所述回转控制阀组件具有将所述回转泵流体连接到所述回转马达的第一侧的第一位置和第二位置 将回转泵流体地连接到回转马达的第二侧; 以及蓄能器控制阀（12），其具有在累积器控制阀连接点处的蓄能器与第一液压路径流体连接的打开位置和将蓄能器与第一液压路径流体隔离的关闭位置。
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