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81. 发明授权

US10113564B2 Hydraulic system and method of operating the same 有权
公开(公告)号：US10113564B2
公开(公告)日：2018-10-30
申请号：US15389586
申请日：2016-12-23
申请人： Robert Bosch GmbH
发明人： Paul C. Stavrou
IPC分类号： F16D31/02 , F15B11/16 , F16H61/4078 , E02F9/22 , F15B15/28
摘要： A hydraulic system includes a pressure-driven actuator operable to provide a mechanical output in response to a pressure input, a single hydraulic circuit communicating with the pressure-driven actuator, a vibratory actuator in the single hydraulic circuit and operable to generate a first component of the mechanical output at a first frequency, and a hydraulic supply apparatus separate from the vibratory actuator, in the single hydraulic circuit, and operable to generate a second component of the mechanical output at a second frequency less than the first frequency.

82. 发明授权

US10087960B2 Hydraulic displacement control system 有权
公开(公告)号：US10087960B2
公开(公告)日：2018-10-02
申请号：US15033363
申请日：2014-10-29
申请人： Raven Industries, Inc.
发明人： Jesse Wagers
IPC分类号： F16D31/02 , F15B15/04 , F15B11/16 , F16H61/4008 , F16H61/46 , F16H61/421 , F16H61/4035 , F16H61/4061 , F15B15/08 , F15B15/20
摘要： A load based pressure and flow control system including a variable displacement hydraulic motor and a flow control valve coupled with a motor inlet. A motor inlet pressure sensor is interposed between the variable displacement hydraulic motor and the flow control valve, the motor inlet pressure sensor configured to measure a motor inlet pressure at the motor inlet. An output sensor is coupled with a motor output of the variable displacement hydraulic motor and configured to measure an output characteristic of the variable displacement hydraulic motor. A displacement and flow controller of the system is configured to change displacement of the variable displacement hydraulic motor according to a pressure difference across the flow control valve between the measured motor inlet pressure and a hydraulic system pressure, and change a flow rate of hydraulic fluid through the flow control valve according to the measured output characteristic of the hydraulic motor.

83. 发明授权

US10087604B2 Hydraulic circuit for loader 有权
公开(公告)号：US10087604B2
公开(公告)日：2018-10-02
申请号：US14597964
申请日：2015-01-15
申请人： Nabtesco Corporation
发明人： Mayu Sasaoka
IPC分类号： E02F9/22 , E02F3/42 , F15B9/08 , E02F3/96 , F15B11/16
摘要： An optional-attachment-operating direction switching valve is provided in a part of an unloading passage which part is on the upstream of an arm-operating direction switching valve and a bucket-operating direction switching valve. The hydraulic circuit is arranged such that the optional-attachment-operating direction switching valve receives pressure oil from a pressure oil supply passage which branches from the part of the unloading passage on the upstream of the optional-attachment-operating direction switching valve, the arm-operating direction switching valve receives pressure oil from a pressure oil supply passage which branches from a part of the unloading passage which part is between the optional-attachment-operating direction switching valve and the arm-operating direction switching valve, and the bucket-operating direction switching valve receives the pressure oil from a pressure oil supply passage which branches from a part of the unloading passage which part is between the optional-attachment-operating direction switching valve and the bucket-operating direction switching valve.

84. 发明授权

US10082159B2 Twin priority valve 有权
公开(公告)号：US10082159B2
公开(公告)日：2018-09-25
申请号：US14430564
申请日：2012-09-28
申请人： VOLVO CONSTRUCTION EQUIPMENT AB
发明人： Bo Vigholm , Andreas Ekvall
IPC分类号： F15B11/16 , F15B11/17 , B62D5/07 , E02F9/08 , E02F9/22 , F15B13/02
CPC分类号： F15B11/17 , B62D5/075 , E02F9/0841 , E02F9/2225 , E02F9/2239 , E02F9/225 , E02F9/2292 , F15B11/161 , F15B11/162 , F15B13/022 , F15B2211/20576 , F15B2211/4053 , F15B2211/781
摘要： A hydraulic system for a work machine including a first and a second hydraulic actuator, and a first and a second hydraulic machine for providing hydraulic fluid to at least one of the first and the second actuator via a first and a second priority valve, respectively. The first and second priority valves are controlled by a pressure drop ΔP over the inlet valve of the first actuator such that when ΔP is lower than a first threshold value T1, a flow of hydraulic fluid is allowed only to the first actuator. The second priority valve allows a flow of hydraulic fluid to both the first and second actuator for a pressure drop higher than T1. The first priority valve is further configured to allow a flow of hydraulic fluid to both of the first and second actuator for a pressure drop higher than a second threshold value T2 which is higher than T1.

85. 发明申请

US20180223499A1 EXCAVATOR HAVING ROTATABLE ARM 审中-公开
公开(公告)号：US20180223499A1
公开(公告)日：2018-08-09
申请号：US15747359
申请日：2016-08-29
申请人： Young Gil KIM
发明人： Young Gil KIM
IPC分类号： E02F3/30 , F16H1/06 , E02F3/38 , E02F9/22 , E02F3/32 , F15B11/16
CPC分类号： E02F3/303 , E02F3/308 , E02F3/32 , E02F3/38 , E02F3/425 , E02F9/006 , E02F9/22 , E02F9/2267 , E02F9/2271 , F15B11/16 , F16H1/06
摘要： An excavator having a rotatable arm is disclosed. The excavator includes: a vehicle body configured to have a hydraulic pump; a boom connected to the vehicle body at one end thereof; a boom cylinder coupled between the vehicle body and the boom, and configured to receive hydraulic energy from the hydraulic pump and operate the boom; an arm connected to the other end of the boom; an arm cylinder coupled between the boom and the arm, and configured to receive hydraulic energy from the hydraulic pump and operate the arm; a bucket connected to an end of the arm; and a bucket cylinder coupled between the arm and the bucket, and configured to receive hydraulic energy from the hydraulic pump and operate the bucket. The arm includes: a first body, a second body, and a rotation module configured to enable the rotational movement of the second body.

86. 发明授权

US10029897B2 Control valve and system with primary and auxiliary function control 有权
公开(公告)号：US10029897B2
公开(公告)日：2018-07-24
申请号：US14700868
申请日：2015-04-30
申请人： Parker-Hannifin Corporation
发明人： Joshua Matthew Guarino , Brian Bernard Slattery
IPC分类号： F15B11/16 , B66F9/22 , F15B13/02 , F15B21/08 , B66F11/04 , F15B13/08
摘要： A method of controlling a hydraulic system having a hydraulic lift function and an auxiliary function includes disabling the hydraulic lift function and the auxiliary function by routing pump flow to tank and opening the lift function and auxiliary function to tank with a single valve; enabling the lift function by closing pump flow to the auxiliary function and routing pump flow to the lift function with the single valve; and enabling the auxiliary function by closing pump flow to the lift function and routing pump flow to the auxiliary function with the single valve.

87. 发明申请

US20180202468A1 VARIABLE HYDRAULIC PRESSURE RELIEF SYSTEMS AND METHODS FOR A MATERIAL HANDLING VEHICLE 审中-公开
公开(公告)号：US20180202468A1
公开(公告)日：2018-07-19
申请号：US15872466
申请日：2018-01-16
申请人： THE RAYMOND CORPORATION
发明人： ERIK C. TRACY
IPC分类号： F15B11/10 , F15B11/16 , F15B1/26 , B66F9/22
CPC分类号： F15B11/10 , B66F9/22 , F15B1/26 , F15B11/16 , F15B2211/55 , F15B2211/6336 , F15B2211/6653
摘要： A hydraulic control system for a material handling vehicle including one or more hydraulic actuators configured to raise and lower a fork assembly attached to a mast of the material handling vehicle is provided. The hydraulic control system is configured to provide multi-stage pressure relief based on a height of the fork assembly.

88. 发明授权

US09995318B2 Hybrid shovel and hybrid shovel control method 有权
公开(公告)号：US09995318B2
公开(公告)日：2018-06-12
申请号：US14700559
申请日：2015-04-30
申请人： SUMITOMO(S.H.I.) CONSTRUCTION MACHINERY CO., LTD.
发明人： Hideto Magaki , Kiminori Sano , Ryuji Shiratani
IPC分类号： F15B21/00 , F15B11/05 , F15B11/16 , F15B15/14
CPC分类号： F15B11/05 , B60K6/485 , B60K6/54 , B60W10/06 , B60W10/08 , B60W20/00 , B60W30/1884 , B60W2300/17 , B60W2510/0638 , B60W2710/083 , E02F3/32 , E02F9/2075 , E02F9/2221 , F15B11/161 , F15B15/14 , F15B2211/20515 , F15B2211/20523 , F15B2211/2053 , F15B2211/26 , Y02T10/6226 , Y02T10/6286
摘要： A hybrid shovel includes an engine that is controlled at a constant revolution speed, a motor generator that assists the engine, a control part that controls a drive of the motor generator, and a hydraulic pump that is driven by the engine. The control part causes the motor generator to assist the engine when a revolution speed of the engine is lower than the constant revolution speed due to a load of the hydraulic pump. The control part causes the motor generator to decrease an assist output to said engine before the revolution speed of the engine returns to the constant revolution speed.

89. 发明授权

US09932722B2 Shovel 有权
公开(公告)号：US09932722B2
公开(公告)日：2018-04-03
申请号：US14695194
申请日：2015-04-24
申请人： SUMITOMO HEAVY INDUSTRIES, LTD.
发明人： Chunnan Wu
IPC分类号： F15B21/14 , E02F9/22 , E02F9/12 , F15B1/02 , F15B11/16
CPC分类号： E02F9/2217 , E02F9/123 , F15B1/024 , F15B11/16 , F15B21/14 , F15B2201/411 , F15B2211/205 , F15B2211/212 , F15B2211/625 , F15B2211/7058 , F15B2211/88
摘要： A shovel may be provided with a main pump, hydraulic actuators including a swing hydraulic motor, a control valve that controls a flow of a working oil between the main pump and the hydraulic actuators, and two accumulators connected between the swing hydraulic motor and the control valve. The two accumulators can respectively release the working oil at an upstream of the main pump.

90. 发明授权

US09903097B2 Hydraulic circuit for construction machine 有权
公开(公告)号：US09903097B2
公开(公告)日：2018-02-27
申请号：US14536776
申请日：2014-11-10
申请人： SUMITOMO(S.H.I.) CONSTRUCTION MACHINERY CO., LTD.
发明人： Hirofumi Hashimoto
IPC分类号： F16K31/00 , E02F9/22 , F15B11/16 , F15B13/04 , F15B11/02
CPC分类号： E02F9/2228 , E02F9/2267 , E02F9/2282 , E02F9/2285 , E02F9/2292 , E02F9/2296 , F15B11/02 , F15B11/16 , F15B13/0402 , F15B2211/20576 , F15B2211/30525 , F15B2211/30565 , F15B2211/3116 , F15B2211/31582 , F15B2211/41554 , F15B2211/45 , F15B2211/7135 , F15B2211/7142 , F15B2211/78 , F15B2211/781
摘要： A hydraulic circuit for a construction machine including a direction control valve group including direction control valves provided in tandem to a center bypass passage, and a bleed-off valve provided to the center bypass passage downstream of the direction control valve group.

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