专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明公开

EP4199701A1 ADAPTIVE CONTROL OF A HYDRAULIC TIMBER GRIP ON A TIMBER HANDLING DEVICE 审中-实审
公开(公告)号：EP4199701A1
公开(公告)日：2023-06-28
申请号：EP21858705.3
申请日：2021-08-17
申请人： Komatsu Forest AB
发明人： MÄKI, Fredrik , LARSSON, Jonas
IPC分类号： A01G23/00 , B66C1/58 , B66C3/16 , F15B11/024

52. 发明公开

EP4127327A1 APPARATUS FOR USE ON CONSTRUCTION OR WORKSITE MACHINES, FOR EXAMPLE AN EXCAVATOR 有权
公开(公告)号：EP4127327A1
公开(公告)日：2023-02-08
申请号：EP21721998.9
申请日：2021-03-26
申请人： Elmaco AS
发明人： HAUGHOM, Per Olav
IPC分类号： E02F3/43 , B60L50/15 , E02F9/20 , E02F9/22 , F15B11/024

53. 发明公开

EP4089289A1 HYDRAULIC MACHINE 审中-实审
公开(公告)号：EP4089289A1
公开(公告)日：2022-11-16
申请号：EP22171832.3
申请日：2022-05-05
申请人： Volvo Construction Equipment AB
发明人： JUNG, Taerang , JOO, Sangkyu , AHN, Hoenghwan , YUN, Seonggeun , LEE, Seunghyun , LEE, Byoungho
IPC分类号： F15B1/02 , F15B11/024 , F15B21/14 , E02F9/22 , F15B1/033 , F15B21/08
摘要： A hydraulic machine. A boom actuator includes a large chamber and a small chamber. A recovery unit receives fluid discharged from the large chamber and then recovers energy. A recovery line connects the large chamber and the recovery unit. An accumulator is connected to a first point on the recovery line. A discharge valve is disposed on the recovery line between the first point and the recovery unit. A first sensor measures a pressure in the accumulator. A controller controls opening and closing of the discharge valve. The controller performs anti-bouncing control of: determining a target pressure in the accumulator corresponding to a load pressure applied to fluid in the large chamber by a load according to a predetermined correspondence; and controlling the opening and closing of the discharge valve such that the pressure in the accumulator measured by the first sensor reaches the target pressure.

54. 发明授权

EP3770444B1 ANORDNUNG MIT EINEM PNEUMATISCHEN ODER HYDRAULISCHEN KOLBENSTANGENZYLINDER 有权
公开(公告)号：EP3770444B1
公开(公告)日：2022-08-31
申请号：EP19187867.7
申请日：2019-07-23
发明人： Tellen, Marc
IPC分类号： F15B11/024 , F15B11/028 , F15B11/036 , F15B20/00 , F15B15/17 , F15B15/20

55. 发明授权

EP3597933B1 DRIVE METHOD AND DRIVE DEVICE FOR FLUID PRESSURE CYLINDER 有权
公开(公告)号：EP3597933B1
公开(公告)日：2022-02-23
申请号：EP18867312.3
申请日：2018-07-25
发明人： ITO, Satoru , TSUCHIYA, Gen , ISHIKAWA, Masayuki , YAJIMA, Hisashi , KANAZAWA, Takehiko
IPC分类号： F15B11/064 , F15B11/024 , F15B11/048

56. 发明公开

EP3770445A1 PNEUMATISCHER ODER HYDRAULISCHER KOLBENSTANGENZYLINDER 有权
公开(公告)号：EP3770445A1
公开(公告)日：2021-01-27
申请号：EP19187881.8
申请日：2019-07-23
申请人： BEUMER Group GmbH & Co. KG
发明人： Tellen, Marc
IPC分类号： F15B11/024 , F15B11/028 , F15B11/036 , F15B15/17 , F15B15/20 , F15B20/00
摘要： Die Erfindung betrifft einen pneumatischen oder hydraulischen Kolbenstangenzylinder (1) mit einem Zylinder (2) und einem darin in dessen Längsrichtung verstellbaren Kolben (3), der mit einer aus dem Zylinder (2) herausragenden Kolbenstange (4) gekoppelt ist und ein in dem Zylinder (2) aufgenommenes Volumen in eine erste Druckkammer (5), durch die sich die Kolbenstange (4) erstreckt, und eine zweite Druckkammer (6) unterteilt, wobei die Druckkammern (5, 6) über einen Bypass (7) fluidisch miteinander verbunden sind und jeweils einen Druckanschluss (15) aufweisen, der in einer Zylinderwandung des Zylinders ausgebildet sein kann und über den die Druckkammern (5, 6) mit einem Fluiddruck beaufschlagbar sind, und wobei eine erste Seite (8) des Kolbens (3) die erste Druckkammer (5) und eine der ersten Seite (8) gegenüber angeordnete zweite Seite (9), die eine im Vergleich zu der ersten Seite (8) größere Fläche aufweist, die zweite Druckkammer (6) begrenzt, dadurch gekennzeichnet, dass die erste und die zweite Druckkammer (5, 6) über eine an die Druckanschlüsse (15) der Druckkammern (5, 6) angeschlossene Bypassleitung (10, 14) des Bypasses (7) fluidisch miteinander verbunden sind.

57. 发明公开

EP3517789A1 HYDRAULIC ENERGY RECOVERY DEVICE FOR WORK MACHINE 有权
公开(公告)号：EP3517789A1
公开(公告)日：2019-07-31
申请号：EP16913636.3
申请日：2016-09-23
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： HIJIKATA, Seiji , ISHIKAWA, Kouji , IMURA, Shinya
IPC分类号： F15B21/14 , E02F9/22 , F15B11/00 , F15B11/024
摘要： A hydraulic energy regeneration system for a work machine for boosting a pressure of a return hydraulic fluid of a hydraulic cylinder and regenerating the hydraulic fluid, prevents a bottom pressure from reaching an overload relief set pressure and suppresses a changeover shock to ensure favorable operability.
The hydraulic energy regeneration system for the work machine, includes: a communication pressure boost passage that can boost a pressure of a discharge-side hydraulic fluid by communicating a discharge side and a suction side of the hydraulic cylinder with each other during an own weight fall of a driven body; a communication pressure boost valve that is disposed in the communication pressure boost passage and that can regulate one of or both of a pressure and a flow rate of the communication pressure boost passage; a reuse-side line and a reuse control valve or a regeneration-side line and a regeneration control valve that can regenerate a hydraulic fluid discharged from the hydraulic cylinder during the own weight fall of the driven body; and a controller. The controller is configured to reduce an opening degree of the communication pressure boost valve in response to an increase of the discharge-side pressure of the hydraulic cylinder right after the discharge-side pressure reaches a preset high load set pressure, and gradually reduces the opening degree of the communication pressure boost valve with passage of time.

58. 发明授权

EP2947211B1 FLOW CONTROL DEVICE AND FLOW CONTROL METHOD FOR CONSTRUCTION MACHINE 有权
公开(公告)号：EP2947211B1
公开(公告)日：2018-09-26
申请号：EP13871736.8
申请日：2013-01-18
申请人： Volvo Construction Equipment AB
发明人： JOUNG, Hea-Gyoon , KIM, Sung-Gon
IPC分类号： E02F9/22 , F02D29/04 , F15B11/024 , F15B13/06
CPC分类号： F15B11/024 , E02F9/2217 , E02F9/2225 , E02F9/2228 , E02F9/2282 , E02F9/2296 , F15B13/026 , F15B13/027 , F15B2211/20546 , F15B2211/3133 , F15B2211/505
摘要： Disclosed are a flow control device and a flow control method for a construction machine for preventing the loss of fluid exhausted from a hydraulic pump when a boom and an arm of an excavator are operated in combination. The flow control device for a construction machine according to the present invention includes: an engine; a variable capacity hydraulic pump connected to the engine; a first hydraulic cylinder and a second hydraulic cylinder connected to the hydraulic pump; a first control valve disposed in a center bypass channel of the hydraulic pump, the first control valve, in neutral, returning the fluid exhausted from the hydraulic pump to a hydraulic tank and, when switched, controlling the driving, stopping, and direction change of the first hydraulic cylinder; a second control valve disposed downstream of the center bypass channel of the hydraulic pump, the second control valve, in neutral, returning the fluid exhausted from the hydraulic pump to the hydraulic tank and, when switched, controlling the driving, stopping, and direction change of the second hydraulic cylinder; a regeneration fluid channel for supplementing and reusing fluid returned to the hydraulic tank during a compression stroke of the first hydraulic cylinder, and a regeneration valve disposed in the regeneration fluid channel; and a pressure-compensated flow control valve which is disposed in a meter-in fluid channel of a spool of the first control valve and limits the quantity of working fluid supplied from the hydraulic pump to the first hydraulic cylinder when the first hydraulic cylinder and the second hydraulic cylinder are operated in combination.

59. 发明授权

EP3112696B8 CONTROL CIRCUIT FOR A PNEUMATICALLY ACTUATED VEHICLE DOOR 有权转让
公开(公告)号：EP3112696B8
公开(公告)日：2018-06-27
申请号：EP15175242.5
申请日：2015-07-03
申请人： IVECO FRANCE S.A.S.
发明人： VRASPIR, Milos
IPC分类号： F15B11/024 , F15B13/02 , F15B13/10 , F15B20/00 , E05F15/49
CPC分类号： F15B13/10 , E05F15/49 , E05F15/565 , F15B11/024 , F15B13/021 , F15B20/00 , F15B2011/0243 , F15B2211/6313 , F15B2211/8603
摘要： Control circuit for a pneumatically controlled vehicle door comprising a double-acting pneumatic cylinder (9) operable to open and close said door and having a first chamber (10) and a second chamber (11), a main pneumatic control block (5) having a first working port (7) and a second working port (8), a fist line (12) connected to the first chamber (10) of the cylinder (9) and constituting a release line in a given movement direction of the cylinder (9) corresponding to a first movement direction of the door, and a second line (13) connected to the second chamber (11) of the cylinder (9) and constituting a filling line in said movement direction; circuit (1) comprises a safety device (42) configured to connect the first line (12) to the first working port (7) in normal operation and to connect the first line (12) to the second line (13) in response to a control signal identifying that the door is blocked by an obstacle in said first direction of movement of the door.

60. 发明公开

EP3315792A1 HYDRAULIC DRIVE DEVICE AND METHOD FOR CONTROLLING SAME 审中-公开
标题翻译：液压驱动装置及其控制方法
公开(公告)号：EP3315792A1
公开(公告)日：2018-05-02
申请号：EP16814100.0
申请日：2016-05-30
申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
发明人： EGUCHI, Toru , NISHIDA, Yoshiharu , KANEI, Naofumi , FUJIWARA, Hideto
IPC分类号： F15B11/024 , F15B11/02
CPC分类号： F15B11/024 , F15B11/02 , F15B11/10 , F15B13/0401 , F15B2013/041 , F15B2211/6313 , F15B2211/6653 , F15B2211/7054
摘要： Provided is a hydraulic drive device, wherein the hydraulic drive device is provided with: a cylinder (101); a rod (103); a piston (102); a hydraulic pump (107); a tank (113); a valve (106) that can be switched between a positive state of connecting the hydraulic pump (107) and a head chamber (101h) and connecting a rod chamber (101r) and the tank (113), and a negative state of connecting the hydraulic pump (107) and the rod chamber (101r) and connecting the head chamber (101h) and the tank (113); and a confluence channel (114) at which, when the valve (106) is in the positive state, at least a portion of hydraulic oil going from the rod chamber (101r) to the tank (113) is merged into hydraulic oil going from the hydraulic pump (107) to the head chamber (101h).
摘要翻译：本发明提供一种液压驱动装置，其中液压驱动装置具备：缸体（101）; 杆（103）; 活塞（102）; 一个液压泵（107）; 一个罐（113）; 能够在连接液压泵107和头部室101h并且连接杆室101r和罐113的正状态与连接该液压泵107的负状态之间切换的阀106，液压泵107和杆腔101r连接，并连接头腔101h和罐113; 和合流通道（114），当阀（106）处于正压状态时，至少一部分从杆腔（101r）流向油箱（113）的液压油合并成从液压泵（107）连接到头室（101h）。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式