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131. 发明授权

US254596A bowie 失效
公开(公告)号：US254596A
公开(公告)日：1882-03-07
申请号：US254596D
CPC分类号： F15B11/05 , G05D16/0661

132. 发明授权

US94891A Improvement in combined high and low-pressure engines 失效
公开(公告)号：US94891A
公开(公告)日：1869-09-14
申请号：US94891D
CPC分类号： F15B11/05 , E21C3/24

133. 发明授权

US12000412B2 Gas-powered drive system and operating method 有权
公开(公告)号：US12000412B2
公开(公告)日：2024-06-04
申请号：US18024789
申请日：2021-09-06
申请人： Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen Körperschaft des öffentlichen Rechts
发明人： Olivier Georg Reinertz , Katharina Schmitz
IPC分类号： F15B11/044 , F15B11/05 , F15B11/064 , F15B13/044
CPC分类号： F15B11/044 , F15B11/05 , F15B11/064 , F15B13/044 , F15B2211/526 , F15B2211/6653
摘要： A gas-powered drive system has a drive which includes a first chamber and a second chamber which are separated from one another by a piston. One of the chambers is connected to a gas source to drive the work element and the other chamber is connected via an exhaust air throttle to a gas sink by means of a reversing valve to movement of the piston. A control valve is assigned to the driving chamber through which the driving chamber can be filled with gas from the gas source. The opening cross-section of the control valve is set as a function of a control pressure.

134. 发明授权

US11920325B2 Construction machine 有权
公开(公告)号：US11920325B2
公开(公告)日：2024-03-05
申请号：US17289365
申请日：2019-12-13
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： Akira Kanazawa , Hidekazu Moriki , Takaaki Chiba , Shinya Imura
IPC分类号： E02F9/22 , F15B11/05 , F15B11/16 , F15B13/02 , F15B13/08
CPC分类号： E02F9/2228 , E02F9/2203 , E02F9/2285 , F15B11/05 , F15B11/161 , F15B13/025 , E02F9/22 , F15B13/086 , F15B2211/30535 , F15B2211/351 , F15B2211/45 , F15B2211/6336 , F15B2211/78
摘要： A construction machine is provided that can cause each hydraulic actuator to accurately operate according to operation by an operator in combined operation in which a hydraulic fluid of a hydraulic pump is subjected to flow dividing and is supplied to plural hydraulic actuators. A controller 10, in a case of determining that combined operation is being carried out, controls a regulator 7a in such a manner that the delivery flow rate of a hydraulic pump 7 becomes larger than the total target flow rate of plural hydraulic actuators 4a, 5a, and 6a, and controls the respective opening amounts of plural directional control valves 8a1, 8a3, and 8a5 in such a manner that the difference between the respective target flow rates of the plural hydraulic actuators and the respective inflow flow rates of the plural hydraulic actuators sensed by velocity sensors 12 to 14 becomes small.

135. 发明公开

US20230323901A1 HYDRAULIC DRIVE SYSTEM 审中-公开
公开(公告)号：US20230323901A1
公开(公告)日：2023-10-12
申请号：US18044332
申请日：2021-09-09
申请人： KAWASAKI JUKOGYO KABUSHIKI KAISHA
发明人： Tomomichi NOSE , Hayato KAWASAKI , Hideyasu MURAOKA , Nobuyuki KINOSHITA
IPC分类号： F15B11/042 , F15B11/044 , F15B11/05
CPC分类号： F15B11/042 , F15B11/044 , F15B11/05
摘要： This hydraulic drive system includes: first and second circuit systems; first and second hydraulic pumps; a merge valve that opens and closes a merge passage connecting the hydraulic pumps; an operation device that outputs an operation command corresponding to an amount of operation specifying an amount of actuation of first and second hydraulic actuators; and a control device that controls the merge valve according to the operation command from the operation device. The first circuit system includes: a first meter-in control valve that controls a meter-in flow rate of the working fluid that flows to the first hydraulic actuator; and a first meter-out control valve that controls a meter-out flow rate of the working fluid that is drained from the first hydraulic actuator into a tank. The control device controls an opening degree of the first meter-in control valve and an opening degree of the first meter-out control valve.

136. 发明授权

US10871177B2 Discharge pressure scale and lifting-lowering device having a discharge pressure scale of this type 有权
公开(公告)号：US10871177B2
公开(公告)日：2020-12-22
申请号：US16340799
申请日：2017-08-31
申请人： HYDAC FLUIDTECHNIK GMBH
发明人： Philipp Hilzendegen , Markus Bill , Maximilian Felix Hess
IPC分类号： F15B13/04 , F15B11/05 , F15B13/01 , F15B13/02 , G05D16/20 , F15B13/00
CPC分类号： F15B13/0417 , F15B11/05 , F15B13/01 , F15B13/026 , F15B13/0405 , G05D16/2024 , F15B2013/004 , F15B2211/3055 , F15B2211/40515 , F15B2211/40569 , F15B2211/41554 , F15B2211/41563 , F15B2211/41581 , F15B2211/426 , F15B2211/46 , F15B2211/465 , F15B2211/8606 , F15B2211/8613
摘要： A discharge pressure scale (30) includes a valve housing (41) having a functional connector (A), a return flow connector (T) and a user connector (28). A valve piston (52) is guided such that it moves longitudinally against the effect of an energy accumulator (42), moving from a respective opening or regulating position, against a valve seat (94), into a closed position. The user connector (28) and return flow connectors (T) are separated from one another. The fluid pressure present at the user connector (28) can be guided onto a pressure-active surface (A1*) of the valve piston (52) by a pressure compensation device (70) in such a way that it moves into its respective opening or regulating position in a pressure-compensated manner due to the force of the energy accumulator (42).

137. 发明授权

US10626578B2 Work machine 有权
公开(公告)号：US10626578B2
公开(公告)日：2020-04-21
申请号：US16081041
申请日：2017-02-28
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： Shiho Izumi , Ryuu Narikawa , Shuuichi Meguriya , Tarou Akita , Kouji Ishikawa
IPC分类号： E02F9/22 , F15B11/08 , E02F3/43 , F15B11/05 , F15B11/024 , E02F3/32 , E02F3/42 , F15B11/16 , F15B21/14
CPC分类号： E02F9/2203 , E02F3/32 , E02F3/425 , E02F3/43 , E02F3/435 , E02F9/2225 , F15B11/024 , F15B11/05 , F15B11/08 , F15B11/16 , F15B21/14 , F15B2211/205 , F15B2211/428 , F15B2211/526 , F15B2211/575 , F15B2211/6355 , F15B2211/6654 , F15B2211/67 , F15B2211/7054 , F15B2211/71
摘要： A work machine has a controller which has an area limiting control section correcting the pilot pressures of pilot lines, a regeneration control section adjusting the flow rate of the hydraulic fluid caused to flow from a tank side line of an arm cylinder into a pump side line thereof between zero and a predetermined upper limit value, and a regeneration control switching section that issues an order to the regeneration control section to set the predetermined upper limit value to a first set value when the function of the area limiting control section is invalid and that issues an order to the regeneration control section to set the predetermined upper limit value to a second set value that is smaller than the first set value when the function of the area limiting control section is effective.

138. 发明授权

US09447874B2 Hydraulic drive 有权
标题翻译：液压驱动
公开(公告)号：US09447874B2
公开(公告)日：2016-09-20
申请号：US12485338
申请日：2009-06-16
申请人： Simon Meier , Thomas Reisch
发明人： Simon Meier , Thomas Reisch
IPC分类号： F15B11/05 , F16H61/4026 , E02F9/12 , E02F9/22 , F16H61/4017 , F16H61/4035 , F16H59/68
CPC分类号： F16H61/4026 , E02F9/123 , E02F9/2228 , E02F9/2235 , E02F9/2296 , F15B11/05 , F15B2211/20546 , F15B2211/253 , F15B2211/40561 , F15B2211/4159 , F15B2211/428 , F15B2211/6054 , F15B2211/7058 , F16H61/4017 , F16H61/4035 , F16H2059/6861 , Y10T137/86493
摘要： The present invention relates to a hydraulic drive which comprises a hydraulic motor having a first hydraulic connector and a second hydraulic connector, wherein the pressure applied at the first hydraulic connector of the hydraulic motor and the pressure applied at the second hydraulic connector of the hydraulic motor are each separately adjustable.
摘要翻译：本发明涉及一种液压驱动装置，它包括具有第一液压连接器和第二液压连接器的液压马达，其中施加在液压马达的第一液压连接器处的压力和在液压马达的第二液压连接器处施加的压力分别可调。

139. 发明申请

US20120085946A1 Valve Device 有权
标题翻译：阀门装置
公开(公告)号：US20120085946A1
公开(公告)日：2012-04-12
申请号：US13378396
申请日：2010-06-23
申请人： Bo Andersson , Bertil Lundgren
发明人： Bo Andersson , Bertil Lundgren
IPC分类号： F16K31/12
CPC分类号： E02F9/2267 , E02F9/2232 , F15B11/05 , F15B11/055 , F15B13/0417 , F15B2211/20553 , F15B2211/30505 , F15B2211/30535 , F15B2211/5756 , F15B2211/6051 , F15B2211/6052 , F15B2211/654
摘要： The invention relates to a hydraulic valve device (1) including a high pressure connection (P′) and a low pressure connection (T′); at least one motor port connection (A′) that is connectable to a motor port (A) on a hydraulic motor (M), preferably a hydraulic cylinder; a flow control valve (F), which is arranged between the high pressure connection (P′) and the motor port connection (A′) and which includes a flow opening (18) that is adjustable between a fully closed position and a fully open position; and a pressure regulator (R) that is arranged between the high pressure connection (P′) and the flow regulating valve (F), wherein a regulator pressure (PR) that acts at a first connection point (3) between the pressure regulator (R) and the flow regulating valve (F) acts on the pressure regulator (R) via a first control conduit (4) to close the same. A second control conduit (5) including a first restrictor (6), is arranged to convey a load pressure (PL) that acts at the motor port connection (A′) from a second connection point (7) positioned between the flow regulating valve (F) and the motor port connection (A′) via the first restrictor (6) to a third connection point (8) at which a first control pressure (Pc) acts and which third connection point (8) is connected to the pressure regulator (R) to act on the same in the opening direction by means of said first control pressure (Pc), wherein the third connection point (8) is connected to the low pressure connection (T), via an adjustable second restrictor (9).
摘要翻译：本发明涉及一种包括高压连接（P'）和低压连接（T'）的液压阀装置（1）。至少一个可连接到液压马达（M）上的马达端口（A）的马达端口连接件（A'），优选为液压缸; 流量控制阀（F），其布置在高压连接（P'）和马达端口连接（A'）之间，并且包括流动开口（18），其可在完全关闭位置和完全打开位置; 以及配置在所述高压连接部（P'）和所述流量调节阀（F）之间的压力调节器（R），其特征在于，所述调压器压力（PR）作用在所述压力调节器 R）和流量调节阀（F）经由第一控制管道（4）作用在压力调节器（R）上以将其关闭。包括第一限流器（6）的第二控制管道（5）被布置成传送从位于流量调节阀（2）之间的第二连接点（7）起作用于马达端口连接（A'）的负载压力（PL）（F）和所述马达端口连接（A'）经由所述第一限制器（6）连接到第三连接点（8），在所述第三连接点处，第一控制压力（Pc）作用在所述第三连接点（8）调节器（R）通过所述第一控制压力（Pc）在打开方向上相同地工作，其中第三连接点（8）经由可调节的第二限制器（9）连接到低压连接件（T））。

140. 发明授权

US08109198B2 Hydraulic control apparatus 有权
标题翻译：液压控制装置
公开(公告)号：US08109198B2
公开(公告)日：2012-02-07
申请号：US12086042
申请日：2007-03-26
申请人： Takeharu Matsuzaki , Shigeto Nakajima , Takeshi Kobayashi
发明人： Takeharu Matsuzaki , Shigeto Nakajima , Takeshi Kobayashi
IPC分类号： F16K11/07
CPC分类号： F15B11/0413 , B66F9/22 , E02F9/2203 , E02F9/2225 , E02F9/2267 , F15B11/044 , F15B11/05 , F15B13/0402 , F15B2211/30545 , F15B2211/353 , F15B2211/40561 , F15B2211/47 , F15B2211/473 , F15B2211/7052 , Y10T137/87169
摘要： A hydraulic control apparatus 1 includes a switch valve 11, a valve support chamber 35, a flow control valve 12 movable within the valve support chamber 35, an on-off valve 13 movable within the communication path chamber 12a, and a valve control device 14. The flow control valve 12 has a communication path chamber 12a and a back pressure chamber 12d. The on-off valve 13 is capable of opening and shutting off a communication path X between a cylinder line 32 and a switch valve line 33. A restrictor is formed between the flow control valve 12 and a wall defining the valve support chamber 35. The restrictor connects the cylinder line 32 and the communication path chamber 12a to each other. The opening degree of the restrictor is changed in correspondence with movement of the flow control valve 12. When the switch valve 11 is located at the neutral position or the supply position, the valve control device 14 applies a fluid pressure in the cylinder line 32 to the back pressure chamber 12d for urging the on-off valve 13 in a direction for shutting off the communication path 12a. When the switch valve 11 is located at the drainage position, the valve control device 14 applies a pilot pressure lower than the fluid pressure in the cylinder line 32 to the back pressure chamber 12d, thereby moving the on-off valve 13 in a direction for opening the communication path X.
摘要翻译：液压控制装置1包括开关阀11，阀支撑室35，可在阀支撑室35内移动的流量控制阀12，可在连通路径室12a内移动的开关阀13以及阀控制装置14 流量控制阀12具有连通路径室12a和背压室12d。开关阀13能够打开和关闭气缸管线32和切换阀线路33之间的连通路径X.在流量控制阀12和限定阀支撑室35的壁之间形成限流器。限流器将气缸管线32和连通路径室12a彼此连接。限制器的开度根据流量控制阀12的移动而改变。当开关阀11位于中立位置或供给位置时，阀控制装置14将气缸管线32中的流体压力施加到用于在断开连通路径12a的方向上推压开关阀13的背压室12d。当切换阀11位于排水位置时，阀控制装置14将低于气缸管线32中的流体压力的先导压力施加到背压室12d，从而沿开关阀13向打开通信路径X.

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