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公开(公告)号：US12117024B2
公开(公告)日：2024-10-15
申请号：US16500667
申请日：2018-05-31
申请人： ClearMotion, Inc.
发明人： Clive Tucker , Joseph Thomas Belter
IPC分类号： F15B13/02 , B60G17/044 , F15B7/00
CPC分类号： F15B13/027 , B60G17/044 , F15B7/006 , F15B2211/20561 , F15B2211/27 , F15B2211/3051 , F15B2211/3058 , F15B2211/50527 , F15B2211/625 , F15B2211/7053
摘要： Disclosed herein are various embodiments of a hydraulic actuator that includes one or more check valves having a dynamically varying cracking pressure. In certain embodiments, a hydraulic actuator may be configured to vary the cracking pressure of a check valve based on an operating condition of a pump of the hydraulic actuator. The check valve may be located along a bypass path in the hydraulic actuator, thereby allowing for fluid flow to bypass a pump of the hydraulic actuator by passing through the check valve. The use of such hydraulic actuators is contemplated in, for example, an active suspension system of a vehicle. Additionally, various embodiments of suitable check valves are disclosed. Additionally, methods are disclosed for operation of the check valve and the hydraulic actuator.
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2.发明授权公开(公告)号：US12066038B2
公开(公告)日：2024-08-20
申请号：US18200498
申请日：2023-05-22
发明人： Valerio Casadei , Cosimo Frascella
IPC分类号： F15B13/04 , A01F15/07 , A01F15/08 , B65B27/12 , B65B13/18 , B65B57/00 , E02F9/22 , F15B15/14 , F15B21/08
CPC分类号： F15B13/0401 , A01F15/07 , A01F15/0883 , B65B27/12 , B65B13/18 , B65B57/00 , E02F9/2289 , F15B2013/0412 , F15B13/0416 , F15B15/14 , F15B21/08 , F15B21/085 , F15B21/087 , F15B2211/27 , F15B2211/50563 , F15B2211/632 , F15B2211/6323 , F15B2211/6326 , F15B2211/7053
摘要： A baler connectable to a tractor for providing round bales comprises: a frame supported on a wheel axle; a chamber, for receiving crops and for housing a formed bale, the chamber having a fixed, predetermined size; a tailgate connected to the frame and movable between a closed position and an open position; a conveying assembly which has a first portion provided in the frame and a second portion provided in the tailgate; a cylinder-piston actuator, which includes a closing chamber and moves the tailgate from the open position to the closed position; a binder, configured for binding the formed bale with a fastening element; a pressure sensor for detecting a control signal representative of a pressure inside the closing chamber of the cylinder-piston actuator; a control unit, configured to generate an alert signal as a function of the control signal.
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公开(公告)号：US12054918B2
公开(公告)日：2024-08-06
申请号：US17908956
申请日：2021-10-18
CPC分类号： E02F9/2228 , E02F9/2004 , E02F9/2203 , E02F9/2217 , E02F9/2246 , F15B1/04 , F15B13/02 , E02F9/2282 , F15B21/087 , F15B21/14 , F15B2211/20523 , F15B2211/20546 , F15B2211/30565 , F15B2211/426 , F15B2211/6346 , F15B2211/6651 , F15B2211/7053 , F15B2211/88
摘要： The present invention provides a construction machine equipped with a pressure accumulation device that accumulates return oil from an actuator, and that can implement both improvement in fuel efficiency with enhancement in workability. To achieve the foregoing, a controller sets an actuator upper limit output power that is an upper limit for an output power of the actuator according to a work mode selected by a work mode selection device, and controls a first control valve and a second control valve such that a sum of an output power of a hydraulic pump and an output power of the pressure accumulation device does not exceed the actuator upper limit output power.
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公开(公告)号：US12018705B2
公开(公告)日：2024-06-25
申请号：US17518841
申请日：2021-11-04
申请人： Deere & Company
IPC分类号： F15B13/02 , A01B63/00 , A01B63/108 , F15B1/26 , A01B63/10 , A01D41/127 , A01D41/14 , F15B1/02 , F15B11/08 , F15B13/04 , F15B13/044
CPC分类号： F15B13/021 , A01B63/008 , A01B63/108 , F15B1/26 , A01B63/10 , A01D41/127 , A01D41/141 , A01D41/145 , F15B1/02 , F15B11/08 , F15B13/0401 , F15B13/044 , F15B2211/30565 , F15B2211/3058 , F15B2211/3127 , F15B2211/426 , F15B2211/526 , F15B2211/625 , F15B2211/7053 , F15B2211/75 , F15B2211/76
摘要： A header assembly for an agricultural harvesting machine comprises a first frame assembly, a second frame assembly that supports a cutter, and is movable relative to the first frame assembly, a float cylinder coupled between the first frame assembly and the second frame assembly, an accumulator, a controllable reservoir, and fluidic circuitry. The fluidic circuitry comprises a first conduit forming a first fluid path that provides a flow of pressurized fluid under pressure to the float cylinder, so the float cylinder exerts a float force on the second frame assembly, a valve mechanism that is actuatable to inhibit fluid flow along the first fluid path between the accumulator and the float cylinder, a second conduit forming a second fluid path fluidically coupled to the controllable reservoir, the controllable reservoir being controllable to add fluid to the float cylinder.
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公开(公告)号：US11808012B2
公开(公告)日：2023-11-07
申请号：US17637550
申请日：2019-08-27
IPC分类号： E02F9/22 , F15B11/044 , F15B11/04 , E21D9/10 , F15B11/10
CPC分类号： E02F9/226 , E02F9/2296 , E21D9/1026 , F15B11/0413 , F15B11/0445 , F15B11/10 , F15B2211/20546 , F15B2211/5059 , F15B2211/50581 , F15B2211/6313 , F15B2211/7053
摘要： A hydraulic system, mining machine and method of controlling a hydraulic actuator. The hydraulic system (HS) is provided with a control valve (23) for controlling movement direction and speed of a hydraulic actuator (HA) connected to the system. Generated force of the hydraulic actuator is controlled independently relative to the control valve by means of counterbalance valves (Cb1, Cb2) and servo valves (Sv1, Sv2) controlling their opening pressure. The counterbalance valves and the servo valves operate as a meter-out control assembly which controls flow of hydraulic fluid discharged from working pressure spaces (16a, 16b) of the hydraulic actuator. The disclosed system may be implemented to control a mining boom (3) of a mining machine (1).
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公开(公告)号：US11644098B2
公开(公告)日：2023-05-09
申请号：US17124492
申请日：2020-12-17
申请人： Kubota Corporation
发明人： Yuji Fukuda , Kazuyoshi Arii , Ryohei Sumiyoshi
IPC分类号： E02F9/22 , F15B11/00 , F16H61/4035 , F16H61/44 , F15B11/20 , F16H61/423 , F16H61/433 , F16H61/4157 , B60K17/10
CPC分类号： F16H61/4035 , E02F9/2285 , F15B11/20 , F16H61/44 , B60K17/10 , F15B11/003 , F15B2211/20576 , F15B2211/3058 , F15B2211/30505 , F15B2211/30525 , F15B2211/329 , F15B2211/355 , F15B2211/613 , F15B2211/6355 , F15B2211/7053 , F15B2211/7058 , F15B2211/71 , F15B2211/7741 , F15B2211/782 , F16H61/4157 , F16H61/423 , F16H61/433
摘要： A hydraulic system of a work machine includes a first hydraulic device to operate in a first operation mode while pressure of hydraulic oil supplied from a hydraulic pump via a first oil passage is equal to or higher than a first pressure threshold. The hydraulic oil in the first oil passage is to be discharged via a second oil passage. A pilot check valve is provided in the second oil passage and has a pilot port to receive a pilot pressure of the hydraulic oil. The pilot check valve is closed to stop discharging the hydraulic oil in the first oil passage through the second oil passage while the pilot pressure is lower than the fourth pressure threshold. The pilot check valve is opened while the pilot pressure is higher than or equal to the fourth pressure threshold. The first hydraulic device is a ride control device.
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公开(公告)号：US20190203444A1
公开(公告)日：2019-07-04
申请号：US16302318
申请日：2017-05-17
申请人： FLUTRON AB
发明人： Stig Stenlund
IPC分类号： E02F9/22 , E02F9/26 , F15B11/17 , F15B21/14 , F15B11/046 , F15B11/042
CPC分类号： E02F9/2203 , E02F9/2228 , E02F9/2235 , E02F9/2267 , E02F9/2271 , E02F9/2292 , E02F9/2296 , E02F9/26 , F15B11/0426 , F15B11/046 , F15B11/17 , F15B15/202 , F15B21/14 , F15B2211/20507 , F15B2211/20515 , F15B2211/20546 , F15B2211/20576 , F15B2211/2656 , F15B2211/30565 , F15B2211/31582 , F15B2211/6306 , F15B2211/6309 , F15B2211/633 , F15B2211/6333 , F15B2211/6336 , F15B2211/6346 , F15B2211/6652 , F15B2211/6654 , F15B2211/7053 , F15B2211/7058 , F15B2211/7135 , F15B2211/75 , F15B2211/755 , F15B2211/7656 , F15B2211/78 , F15B2211/88
摘要： A operator supporting electrohydraulic drive and control system based on, position sensors (8) (9), a electronic control unite ECU (2), a recovery, storing and re-use system for energy, and with actuator (3) (4) and the drive control valve (6) (7) bolted together in one (3+6) (4+7) unite and with the valve (6) (7) independently of the ECU (2) is controlling effective use of pump capacity and recovery of energy and with control of speed for low speeds, or prevented speed by valves (6) (7) or pump (10) (10a) (11) (11a) displacement and for higher speed with control of deplacement of pumps and motors and with valves (6) (7) at the same time controlled to be fully open.
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公开(公告)号：US20190186105A1
公开(公告)日：2019-06-20
申请号：US16328054
申请日：2017-05-09
发明人： Shinya IMURA , Hiroaki AMANO , Shinji NISHIKAWA , Masafumi HITA
CPC分类号： E02F9/2228 , E02F3/32 , E02F3/425 , E02F3/435 , E02F9/2004 , E02F9/22 , E02F9/2267 , E02F9/2271 , E02F9/2285 , E02F9/2296 , F15B11/16 , F15B2211/20523 , F15B2211/351 , F15B2211/353 , F15B2211/6346 , F15B2211/7053 , F15B2211/71 , F15B2211/78
摘要： A work machine includes directional control valves 43 and 44 each controlling a direction and a flow rate of a pressurized fluid supplied to each a boom cylinder 32 and a bucket cylinder 36; operation amount sensors 51a, 52a, and 52b detecting operation amounts of operation devices 51 and 52; a variable flow control valve 45 that can restrict the flow rate of the pressurized fluid in a meter-in passage of the directional control valve 44 related to the bucket cylinder 36; and a controller 60 controlling the variable flow control valve on the basis of the detection results by the operation amounts from the operation amount sensors, and the controller changes over an action mode to any one of a normal mode for restricting the flow rate of the pressurized fluid by the variable flow control valve and a responsiveness priority mode for not restricting the flow rate of the pressurized fluid by the variable flow control valve in response to the detection results of the operation amounts of the plurality of operation devices. It is thereby possible to enhance responsiveness in an action that requires responsiveness such as an action in which an operation amount of an operation lever frequently changes in a short period of time and to suppress a decline in work efficiency.
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公开(公告)号：US20180258962A1
公开(公告)日：2018-09-13
申请号：US15760766
申请日：2016-01-21
发明人： Yuichi Taguchi
CPC分类号： F15B11/04 , B02C1/02 , E02F3/965 , E02F9/2203 , E02F9/2217 , E04G23/082 , F15B1/265 , F15B9/10 , F15B11/22 , F15B15/221 , F15B2211/7053 , F15B2211/7128 , F15B2211/75 , F15B2211/755 , F15B2211/775
摘要： A cylinder acceleration mechanism includes a buffer tank that supplies and discharges oil to and from a bottom-side line that is connected to a bottom-side chamber of an actuating cylinder, and an inversion lever having an intermediate fulcrum as a rotation axis. The buffer tank includes a buffer chamber with a variable capacity achieved by a seal lid moving back and forth inside of a case, and extends and reduces a length of a coupling rod provided to the seal lid and projects from the case. A bottom-side branching line branched from the bottom-side line is connected to the buffer chamber. The actuating rod of the actuating cylinder and the coupling rod of the buffer tank are coupled to respective ends of the inversion lever. The actuating rod and the coupling rod extend and retract alternately with respect to each other as the inversion lever turns.
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公开(公告)号：US10041513B2
公开(公告)日：2018-08-07
申请号：US15507742
申请日：2015-09-01
申请人： BÖHNER-EH GMBH
发明人： Christian Böhner
CPC分类号： F15B15/1476 , F15B1/024 , F15B11/10 , F15B15/1409 , F15B15/18 , F15B20/00 , F15B20/004 , F15B2211/20561 , F15B2211/27 , F15B2211/41581 , F15B2211/63 , F15B2211/7053 , F15B2211/7055 , F15B2211/8752
摘要： The invention relates to a hydraulic device for driving an actuator to be hydraulically controlled or actuated, comprising a motor arranged in a motor housing, a compensating tank (31) for accommodating hydraulic fluid, and a hydraulic pump, which is arranged in a pump housing and driven by the motor, wherein the hydraulic pump is designed in such a way that the hydraulic pump permits conveyance of hydraulic fluid in two directions, namely in the forward direction and in the backward direction.
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