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公开(公告)号：US10604385B2
公开(公告)日：2020-03-31
申请号：US16088542
申请日：2017-04-07
申请人： TADANO LTD.
发明人： Naotaka Masuda
IPC分类号： B66C13/20 , B66C13/56 , B66C23/86 , F15B11/042 , F15B11/044 , B66C23/00
摘要： The present invention is configured so that it is possible to select any one of a first mode in which a first adjustment valve 13 and a second adjustment valve 20 operate solely on the basis of manipulation of a main manipulation tool (turning lever 8i), a second mode in which the first adjustment valve 13 operates solely on the basis of manipulation of the main manipulation tool (8i) and the second adjustment valve 20 operates solely on the basis of manipulation of a secondary manipulation tool (brake pedal 8j), and a third mode in which the first adjustment valve 13 operates solely on the basis of manipulation of the main manipulation tool (8i) and the second adjustment valve 20 operates on the basis of manipulation of the secondary manipulation tool (8j) while operating on the basis of manipulation of the main manipulation tool (8i).
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公开(公告)号：US10359063B2
公开(公告)日：2019-07-23
申请号：US15528649
申请日：2015-01-19
发明人： Zenghai Shan , Zhengde Zhang , Xiaodong Hu , Haiyan Zhang , Conglin Yuan
摘要： A method and a system for recovering and utilizing crane operating energy and a crane includes converting by a first hydraulic power means hydraulic energy generated by a hydraulic actuator into mechanical energy of a transmission shaft; driving, by the transmission shaft, a second hydraulic power means to rotate so as to convert the mechanical energy of the transmission shaft into mechanical energy of the second hydraulic power means; filling, by the second hydraulic power means, pressurized oil into an accumulator so as to convert the mechanical energy of the second hydraulic power means into hydraulic energy for storage.
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公开(公告)号：US20190177130A1
公开(公告)日：2019-06-13
申请号：US16166380
申请日：2018-10-22
发明人： Takashi HAYASHI
摘要： An operation control apparatus for a crane for moving a suspended load in vertical and horizontal directions to a target position includes: a trajectory creating unit configured to create in advance a movement trajectory of the suspended load; a function creating unit configured to create a function indicating a relationship between a horizontal direction position and a height in the trajectory; a vertical direction command value updating unit configured to generate a vertical direction position command value by sequentially updating, in accordance with the horizontal direction position and based on the function, the vertical position at which the load should be present; a vertical direction control unit configured to generate a vertical direction speed command value based on the position command value; and a vertical direction driving unit configured to move the load in the vertical direction in accordance with the speed command value.
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公开(公告)号：US10287145B2
公开(公告)日：2019-05-14
申请号：US15212619
申请日：2016-07-18
发明人： Takahiro Iwazawa
摘要： A mobile crane includes a crane main body including a control valve which controls a supply flow rate of hydraulic oil to a main-body driving motor and a pilot-pressure control device which controls a pilot pressure supplied to the control valve. The pilot-pressure control device increases the pilot pressure at a first ratio according to an increase in an operation amount of an operation section when a counterweight carrier is an uncoupled state, increases the pilot pressure at a second ratio lower than the first ratio according to the increase in the operation amount when the counterweight carrier is a coupled state and a grounded state, and increases the pilot pressure at a third ratio higher than the second ratio and equal to or lower than the first ratio according to the increase in the operation amount when the counterweight carrier is the coupled state and an afloat state.
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公开(公告)号：US20190106300A1
公开(公告)日：2019-04-11
申请号：US16088528
申请日：2017-04-07
申请人： TADANO LTD.
摘要： A crane is disclosed, the crane includes detachable hydraulic cylinder including a head side oil chamber and a rod side oil chamber both to be connected to a control valve through a joint, in which a head side hydraulic detecting section and a rod side hydraulic detecting section are each provided to the hydraulic cylinder, and a connection state between the hydraulic cylinder and the control valve is determined based on a head side hydraulic pressure and a rod side hydraulic pressure in a period until a predetermined time elapses after supply of electric power to the head side hydraulic detecting section and the rod side hydraulic detecting section is started and an operation tool for hydraulic cylinder switches the control valve to a state of supplying hydraulic fluid to the hydraulic cylinder.
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公开(公告)号：US10196245B2
公开(公告)日：2019-02-05
申请号：US15186403
申请日：2016-06-17
发明人： Junfei Chai , Huapeng Cui , Hongmin Zhang , Lei Li , Cuiping Wang
摘要： An apparatus for a crane comprises a large-cavity pressure sensor, a small-cavity pressure sensor, a controller, a telescopic oil cylinder, and a telescopic oil cylinder regulator. The large-cavity pressure sensor can measure the oil pressure in a large cavity of the telescopic oil cylinder. The small cavity pressure sensor can measure the oil pressure in a small cavity of the telescopic oil cylinder. The controller can control an output electrical signal according to a large-cavity oil pressure fed back by the large-cavity pressure sensor and a small-cavity oil pressure fed back by the small-cavity pressure sensor, and, by means of the electrical signal, control a change of the amount of hydraulic oil flowing into and out of the large cavity and the small cavity of the telescopic oil cylinder so as to regulate the oil pressures in the large cavity and the small cavity.
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公开(公告)号：US10174484B2
公开(公告)日：2019-01-08
申请号：US15103447
申请日：2014-12-17
发明人： Choon Shik Joo
IPC分类号： F15B11/02 , E02F9/22 , E02F3/43 , E02F9/26 , B66C13/20 , F15B11/024 , F15B1/027 , F15B1/04 , F15B11/08 , F15B13/044
摘要： The present disclosure relates to a control circuit and a control method for boom energy regeneration, and the control circuit for boom energy regeneration includes: a control unit which controls a discharge amount control valve, such that the amount of oil, which is discharged from a head of a boom cylinder, is supplied to a regeneration device or a rod of the boom cylinder through a hydraulic regeneration line, and when the regeneration device has an abnormality, the amount of oil, which is discharged from the head of the boom cylinder, is supplied to the main control valve through a hydraulic discharge line.
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公开(公告)号：US20180258899A1
公开(公告)日：2018-09-13
申请号：US15761331
申请日：2016-10-25
申请人： TADANO LTD.
发明人： Takero IKIYAMA
CPC分类号： F02N11/0833 , B66C13/20 , B66C23/40 , B66C23/42 , B66C23/701 , B66C23/78 , B66C2700/0364 , B66C2700/0378 , F02D17/00 , F02D29/02 , F02N11/0818 , F02N11/0822
摘要： Provided are a work machine and engine stopping control device that make it possible to efficiently perform a setting operation related to crane work. When performing prescribed work, the work mode of a work device can be set, and it is determined whether or not the work device is in a setting state in which this work mode is being set. Due to this, when the work device is determined to be in the setting state, stopping of the engine is restricted even if an idling stop permission condition is met.
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公开(公告)号：US20180162701A1
公开(公告)日：2018-06-14
申请号：US15577706
申请日：2016-05-30
申请人： SCHWING GMBH
CPC分类号： B66C13/20 , B66C13/46 , E04G21/04 , E04G21/0436 , E04G21/0445 , E04G21/0463
摘要： The invention relates to a large manipulator (1), in particular a truck-mounted concrete pump, having a mast pedestal (3) which is rotatable about a vertical axis by means of a rotary drive and which is arranged on a chassis (2), having an articulated mast (4) which comprises two or more mast arms (5, 6, 7, 8), wherein the mast arms (5, 6, 7, 8) are connected, so as to be pivotable by means of in each case one pivoting drive, to the respectively adjacent mast pedestal (3) or mast arm (5, 6, 7, 8), having a control device, which actuates the drives, for the mast movement, and having a mast sensor arrangement for detecting the position of at least one point of the articulated mast (4) or a pivot angle (φ1, φ2, φ3, φ4) of at least one articulated joint. The large manipulator is characterized in that the control device (17) is designed to limit the speed of the mast movement on the basis of the output signal from the mast sensor arrangement. The invention also relates to a method for controlling the movement of an articulated mast (4) of a large manipulator (1), in particular of a truck-mounted concrete pump.
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公开(公告)号：US09988247B2
公开(公告)日：2018-06-05
申请号：US15212651
申请日：2016-07-18
发明人： Takahiro Iwazawa
摘要： A mobile crane includes a counterweight carrier capable of traveling following a movement of a crane main body, the counterweight carrier including a carrier main body on which a counterweight is loaded and a wheel unit attached to the carrier main body and including wheels, a wheel driving device configured to rotate the wheels to thereby cause the counterweight carrier to travel, a loadage detector configured to detect a weight loadage index value, which is an index value of weight of the counterweight loaded on the carrier main body, and a controller configured to cause the wheel driving device to change a driving force of the wheel driving device for rotating the wheels such that the driving force increases as the weight loadage index value detected by the loadage detector increases.
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