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1. 发明公开

EP3939929A1 EXPANSION DEVICE AND CRANE 审中-实审
公开(公告)号：EP3939929A1
公开(公告)日：2022-01-19
申请号：EP19918549.7
申请日：2019-03-14
申请人： TADANO LTD.
发明人： KAWABUCHI, Naoto , KITAYAMA, Hiroshi , MASUDA, Naotaka , WADA, Hisanori , KAWANO, Takashi
IPC分类号： B66C23/693
摘要： This expansion device is an expansion device that expands and contracts an expandable boom having a first boom element and a second boom element which expandably overlap, the expansion device including: a first hydraulic source that discharges a first working fluid; an expandable cylinder that has a fixed part and a movable part movable with respect to the fixed part, is operated on the basis of supply of the first working fluid, and moves the first boom element with respect to the second boom element in a stretching direction; a second hydraulic source that is provided to the movable part, discharges the second working fluid, and is a separate hydraulic source from the first hydraulic source; a first connecting mechanism that is provided to the movable part, is operated based on supply of the second working fluid, and switches between a connected state and a disconnected state of the first boom element and the movable part; and a second connecting mechanism that is provided to the movable part, is operated based on supplying the second working fluid, and switches between a connected state and a disconnected state of the first boom element and the second boom element.

2. 发明公开

EP3828123A1 INFORMING DEVICE, WORK VEHICLE, AND INFORMING METHOD 审中-实审
公开(公告)号：EP3828123A1
公开(公告)日：2021-06-02
申请号：EP19841431.0
申请日：2019-07-23
申请人： TADANO LTD.
发明人： FUKUMORI, Yasuhiro , KAWABUCHI, Naoto , YOSHIDA, Naofumi , MIYOSHI, Masato , OHARA, Kei , TAKAHASHI, Hidenobu , NAGATA, Reya , TAKAHASHI, Masafumi
IPC分类号： B66C23/94
摘要： An informing device is an informing device mounted on a work vehicle that includes a lower base body, and a swivel body swivelably provided at the lower base body. The informing device includes a first detection unit that detects the actual amount of rotation of a drive device which swivels the swivel body or a driven part driven by the drive device, and a notification unit that issues a notification regarding information corresponding to the amount of rotation detected by the first detection unit.

3. 发明公开

EP3424868A1 EXPANSION/CONTRACTION MECHANISM 有权
公开(公告)号：EP3424868A1
公开(公告)日：2019-01-09
申请号：EP17760168.9
申请日：2017-03-03
申请人： Tadano Ltd.
发明人： KAWABUCHI, Naoto , KAWANO, Takashi
IPC分类号： B66C23/693
摘要： An expansion/contraction mechanism includes a telescopic cylinder, boom fixing means, cylinder-boom connecting means, and a hydraulic-pressure supply unit, and telescopes a plurality of booms except a base boom stage by stage by telescoping the telescopic cylinder. The hydraulic-pressure supply unit includes a pneumatic-pressure source, a selector valve which selects a destination of air provided from the pneumatic-pressure source, a first pneumatic path through which first air sent from the selector valve circulates, a second pneumatic path through which second air sent from the selector valve circulates, a first pneumatic-to-hydraulic conversion unit which converts a pneumatic pressure provided by the first air to a hydraulic pressure and supplies the hydraulic pressure to a first hydraulic cylinder, and a second pneumatic-to-hydraulic conversion unit which converts a pneumatic pressure provided by the second air to a hydraulic pressure and supplies the hydraulic pressure to a second hydraulic cylinder. The pneumatic-pressure source and the selector valve are placed on a fixing-unit side of the telescopic cylinder, and the first and second pneumatic-to-hydraulic conversion units are placed on a movable-portion side of the telescopic cylinder.

4. 发明公开

EP3061718A1 TELESCOPIC BOOM EXTENSION DEVICE 有权
标题翻译：伸缩臂伸缩装置
公开(公告)号：EP3061718A1
公开(公告)日：2016-08-31
申请号：EP16155964.6
申请日：2016-02-16
申请人： Tadano Ltd.
发明人： KAWABUCHI, Naoto , KAWANO, Takashi
IPC分类号： B66C23/22 , B66C23/70
CPC分类号： B66C23/705 , B66C23/22
摘要： A telescopic boom extension device (10) includes a driving mechanism. The driving mechanism that drives B pins (26-30) and a C pin (34) includes a hydraulic supply part (18) and a drive source generation part (19). The drive source generation part generates a predetermined hydraulic pressure at the hydraulic supply part based on a pneumatic pressure. The hydraulic supply part has an accumulator and AOHs and supplies a hydraulic pressure to a cylinder-boom coupling mechanism (15) and an inter-boom fixing mechanism (16). The drive source generation part uses a pneumatic supply part (41) to send compressed air to the hydraulic supply part.
摘要翻译：伸缩臂杆延伸装置（10）包括驱动机构。驱动B销（26-30）和C销（34）的驱动机构包括液压供给部（18）和驱动源生成部（19）。驱动源生成部基于气压在液压供给部产生规定的液压。液压供给部具有蓄压器和AOHs，并且向液压缸动臂连结机构15和动臂间固定机构16供给液压。驱动源生成部分使用气动供应部分（41）将压缩空气发送到液压供应部分。

5. 发明公开

EP4253304A1 WORK MACHINE 审中-实审
公开(公告)号：EP4253304A1
公开(公告)日：2023-10-04
申请号：EP21897856.7
申请日：2021-11-18
申请人： TADANO LTD.
发明人： FUKUMORI, Yasuhiro , KAWABUCHI, Naoto
IPC分类号： B66C23/693
摘要： This work machine comprises: a first hydraulic cylinder and a second hydraulic cylinder that telescope a telescopic boom on the basis of hydraulic oil supply and discharge, a switching valve that is disposed on a pressure relief circuit for connecting the first hydraulic cylinder and the second hydraulic cylinder to a tank, and a control unit that causes the switching valve to connect the first hydraulic cylinder to the tank and releases the pressure in the first hydraulic cylinder when contracting or extending the second hydraulic cylinder in a condition in which the first hydraulic cylinder is contracted.

6. 发明公开

EP3434913A1 HYDRAULIC SYSTEM 有权
公开(公告)号：EP3434913A1
公开(公告)日：2019-01-30
申请号：EP17770411.1
申请日：2017-03-24
申请人： Tadano Ltd.
发明人： KAWABUCHI, Naoto , YOSHIDA, Naofumi , MASUDA, Naotaka , FUKUMORI, Yasuhiro
IPC分类号： F15B20/00 , B66C15/00
摘要： Provided is a hydraulic system with which an operator can safely perform work during an emergency operation even in the event that an electromagnetic proportional valve itself has failed.
This hydraulic system is provided with a hydraulic pump, a control valve, and a pilot pressure supply unit. The pilot pressure supply unit has: an electromagnetic proportional valve that has a detent-type emergency manual operation function with which a pilot oil passage can be opened manually and generates pilot pressure for a control valve; a controller that controls the degree of opening of the electromagnetic proportional valve in accordance with the operation of an operation lever; and a pilot pressure switching unit that switches the oil pressure state of the pilot pressure supply unit between an on-loading state and an unloading state. The pilot pressure switching unit performs control to implement the unloading state when the electromagnetic proportional valve is being opened manually and performs control to implement the on-loading state after the electromagnetic proportional valve has been opened manually.

7. 发明公开

EP3053869A1 TELESCOPIC BOOM EXTENSION DEVICE 有权
标题翻译： TELESKOPISCHEAUSLEGERVERLÄNGERUNGSVORRICHTUNG
公开(公告)号：EP3053869A1
公开(公告)日：2016-08-10
申请号：EP16153385.6
申请日：2016-01-29
申请人： Tadano Ltd.
发明人： KAWABUCHI, Naoto , KAWANO, Takashi
IPC分类号： B66C23/70
CPC分类号： B66C23/705
摘要： A telescopic boom extension device (10) includes a cylinder-boom coupling mechanism (15), an inter-boom fixing mechanism (16), and a driving mechanism (17) that drives the foregoing two. The driving mechanism has a hydraulic supply part (18) and a drive source generation part (19). The hydraulic supply part includes an AOH and is provided at a cylinder tube of a telescopic boom (13). The hydraulic supply part supplies operating oil selectively to actuators driving a B pin and a C pin. The drive source generation part includes an air hose (57) and supplies compressed air to the AOH. The air hose is wound around a hose reel in an unrollable manner.
摘要翻译：伸缩臂延伸装置（10）包括气缸臂联动机构（15），叉臂间固定机构（16）和驱动上述两者的驱动机构（17）。驱动机构具有液压供给部（18）和驱动源生成部（19）。液压供给部包括AOH，设置在伸缩臂（13）的筒管内。液压供给部件选择性地向驱动B销和C销的致动器供给工作油。驱动源产生部分包括空气软管（57）并将压缩空气供给到AOH。空气软管以无法展开的方式缠绕在软管卷盘上。

8. 发明授权

EP3258339B1 ACTUATOR CONTROL DEVICE AND WORK VEHICLE 有权
公开(公告)号：EP3258339B1
公开(公告)日：2019-08-21
申请号：EP15882017.5
申请日：2015-09-29
申请人： Tadano Ltd.
发明人： KAWABUCHI, Naoto , YOSHIDA, Naofumi , MASUDA, Naotaka , FUKUMORI, Yasuhiro
IPC分类号： G05G7/04 , B66C13/20 , F15B11/02 , E02F9/22 , F15B19/00 , F15B21/08

9. 发明授权

EP3053869B1 TELESCOPIC BOOM EXTENSION DEVICE 有权
公开(公告)号：EP3053869B1
公开(公告)日：2018-08-01
申请号：EP16153385.6
申请日：2016-01-29
申请人： Tadano Ltd.
发明人： KAWABUCHI, Naoto , KAWANO, Takashi
IPC分类号： B66C23/70
CPC分类号： B66C23/705
摘要： A telescopic boom extension device (10) includes a cylinder-boom coupling mechanism (15), an inter-boom fixing mechanism (16), and a driving mechanism (17) that drives the foregoing two. The driving mechanism has a hydraulic supply part (18) and a drive source generation part (19). The hydraulic supply part includes an AOH and is provided at a cylinder tube of a telescopic boom (13). The hydraulic supply part supplies operating oil selectively to actuators driving a B pin and a C pin. The drive source generation part includes an air hose (57) and supplies compressed air to the AOH. The air hose is wound around a hose reel in an unrollable manner.

10. 发明公开

EP3805143A1 CRANE 审中-实审
公开(公告)号：EP3805143A1
公开(公告)日：2021-04-14
申请号：EP19812444.8
申请日：2019-05-27
申请人： TADANO LTD.
发明人： KAWABUCHI, Naoto , WADA, Hisanori , MASUDA, Naotaka
IPC分类号： B66C23/693 , B66C23/42
摘要： This crane is provided with: a telescopic boom that can be extended; an extension device for extending the telescopic boom; a hydraulic pressure source provided in the extension device; a cylinder connection mechanism connected to the hydraulic pressure source and switching between the states of connection and non-connection with the telescopic boom on the basis of the supply and discharge of hydraulic oil; a first oil path for connecting the hydraulic pressure source and the cylinder connection mechanism; a first valve that is provided on the first oil path and switches the supply and discharge state of the hydraulic oil with respect to the cylinder connection mechanism; and a second oil path that bypasses the first valve and connects the hydraulic pressure source and the cylinder connection mechanism.

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