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公开(公告)号：EP3176124A4
公开(公告)日：2018-03-28
申请号：EP15827964
申请日：2015-07-23
发明人： MIYAZAKI KAZUYUKI , KURIHARA SHINGO
摘要： A crane comprises a boom (10) having a structure which allows the length of the boom to be changed, and a derricking mechanism (11) configured to rotate the boom (10) to raise and lower the boom with respect to a machine body, wherein: the derricking mechanism (11) includes a linking device (32) connecting one end of a guy line (30) to a distal end of the boom (10); the distal end (13) of the boom (10) has a back surface (21) which faces rearward and a ventral surface (22) which faces forward when the boom is in a vertical position; the linking device (32) includes a joint (36) connected to one end of the guy line (30), and a support device (38) provided on the distal end (13) to support the joint (36) so as to locate the joint (36) at a position away from the back surface (21) and opposite to the ventral surface(22); and the support device (38) includes a holding member (49) which holds the joint (36), the holding member (49) allowing the position of the joint to be selectively changed to a plurality of different positions in a first direction perpendicularly intersecting an axis of the boom and a rotary axis of the boom.
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公开(公告)号：EP2620556A4
公开(公告)日：2018-03-07
申请号：EP11826551
申请日：2011-09-06
发明人： YAMAZAKI YOICHIRO
IPC分类号： E02F9/20 , B60L1/00 , B60L7/10 , B60W20/00 , B60W30/18 , B66C23/86 , E02F9/12 , E02F9/22 , H01M10/46 , H01M16/00
CPC分类号： E02F9/2217 , B60L1/003 , B60L7/10 , B60L2200/40 , B60W20/00 , B60W30/18127 , B66C23/86 , E02F9/123 , E02F9/2075 , E02F9/2091 , E02F9/2095 , H01M10/46 , H01M16/00 , H01M2220/20 , Y02E60/12
摘要： Provided is a construction machine capable of effectively lowering a voltage between terminals of an energy storage unit for use in drive assistance and regeneration without involving an intolerable increase in cost and facility space. The construction machine includes: a work device operable on drive and regeneration sides; an operation device (16) which receives a manipulation and outputs an operation command concerning the work device; a hydraulic unit including a hydraulic motor (7) as a drive source to drive the work device; an electric unit including an electric motor (11) as a drive source and an energy storage unit (23) functioning as a power source for the electric motor (11) to assist driving of the work device by the hydraulic unit; a control device (24, 25) which makes the electric power of the energy storage unit assist the hydraulic unit when the operation device (16) is manipulated for the drive side, and makes the electric motor (11) generate regenerative electric power for supplying the regenerative electric power to the energy storage unit (23) as charging electric power when the operation device (16) is manipulated for the regeneration side; and a power-discharge command unit (26) which commands a discharge of the energy storage unit (23). In the case where the discharge command is issued, the control device (24, 25) operates the electric motor (11) to lower a voltage between terminals of the energy storage unit (23) when the operation device is manipulated for the drive side, and makes only the hydraulic unit decelerate or stop the work device when the operation device is manipulated for the regeneration side.
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公开(公告)号：EP2602491A4
公开(公告)日：2018-02-28
申请号：EP11814260
申请日：2011-07-28
发明人： SAOTOME YOSHIMI , OGUMA SHOTA
CPC分类号： E02F3/36 , E02F9/2239 , E02F9/2282 , E02F9/2285 , E02F9/2292 , F15B2211/20576 , F15B2211/3116
摘要： The present invention is directed to providing a construction machine capable of improving boom raising performance. The construction machine comprises: a lower propelling body (1); an upper slewing body (2); a working attachment (9) which includes a boom (3), an arm (4), a bucket (5), and three cylinders (6, 7, 8) for driving respective ones of the boom (3), arm (4) and bucket (5); two travel motors (10, 11); a slewing motor (12); a hydraulic actuator circuit; and first to third pumps (13 to 15). The hydraulic actuator circuit comprises: a first circuit (A) connected to one of the travel motors (10, 11) and the boom cylinder (6); a second circuit (B) connected to the other travel motor and the arm cylinder (7); and a third circuit (C) connected to the slewing motor (12), wherein the first to third circuits have a plurality of control valves (16 to 20) each associated with the hydraulic actuator. Each of the first to third pumps (13 to 15) discharges hydraulic fluid toward the respective first to third circuits (A to C). Each of the travel motors is disposed on an upstreammost side in the first and second circuits (A, B). The hydraulic actuator circuit includes a merging valve (22A), which has: a first position (P1) for unloading the hydraulic fluid discharged from the third pump (15) through the second circuit (B) when none of the hydraulic actuators other than the two travel motors (10, 11) is operated; a second position (P2) for merging hydraulic fluid discharged from the third pump (15) into each of the first and second circuits (A, B) when a simultaneous operation of the two travel motors (10, 11), and an operation of at least one of the remaining hydraulic actuators except for a boom raising operation which is an operation for raising the boom are performed; and a third position for merging hydraulic fluid discharged from the third pump (15) into the first circuit (A) while blocking the hydraulic fluid from the second circuit (B) when the boom raising operation is performed.
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公开(公告)号：EP2679735A4
公开(公告)日：2018-01-10
申请号：EP12750223
申请日：2012-01-31
发明人： OKA HIDEKAZU
CPC分类号： E02F3/435 , E02F3/30 , E02F9/2029 , E02F9/2203 , E02F9/2228 , E02F9/226 , E02F9/2282 , E02F9/2285 , F15B21/14 , F15B2211/3116 , F15B2211/329
摘要： Provided is a construction machine in which a rod-side pressure in a boom cylinder can be relieved without difficulty. The construction machine includes: a hydraulic pump 14; a working attachment including a boom, a boom cylinder 6, and another fluid-supplied cylinder; first and second operation devices 10, 11 for the boom cylinder 6 and the fluid-supplied cylinder; first and second control valves 12, 13; a flow-rate-limiting section 16; and an anti-cavitation circuit 17. The fluid-supplied cylinder is, for instance, an arm cylinder 7 closer to a leading end than the boom cylinder 6, receiving supply of hydraulic fluid from the hydraulic pump 14, together with the boom cylinder 6. A reaction force upon work accompanying extension of the fluid-supplied cylinder increases the rod-side pressure of the boom cylinder 6 and reduces a head-side pressure. The flow-rate-limiting section 16 limits a supply flow rate to a head-side fluid chamber 6a of the boom cylinder 6 from the hydraulic pump 14 only during a boom raising operation in a situation where the rod-side pressure of the boom cylinder 6 is higher than the head-side pressure thereof. The anti-cavitation circuit 17 replenishes hydraulic fluid from a tank T to the head-side fluid chamber 6a.
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公开(公告)号：EP3192928A4
公开(公告)日：2017-12-27
申请号：EP15857369
申请日：2015-10-21
发明人： KOJIMA YUKI , MIZOMOTO TAKASHI
IPC分类号： E02F3/38
摘要： Provided is an arm for a construction machine, including an arm top formed by casting, being easily produced with high dimensional accuracy. The arm includes an arm body 14 and an arm top 25. The arm top 25 is formed of left and right arm top pieces P1, P2 individually formed by casting and joined together. The left and right arm top pieces P1, P2 include first left and right bosses 28a, 28b constituting a fist connection section 28, second left and right bosses 29a, 29b constituting a second connection portion 29, and left and right projecting wall portions 30a, 30b constituting a connection wall 30 connecting the first and second connection portions 28, 29 to each other, respectively. The left and right arm top pieces P1, P2 are joined together by welding at respective opposing surfaces of the first left and right bosses 28a, 28b, those of the second left and right bosses 29a, 29b and those of the left and right projecting wall portions 30a, 30b, thereby forming the arm top 25.
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公开(公告)号：EP3144261A4
公开(公告)日：2017-12-27
申请号：EP15792377
申请日：2015-05-14
摘要： An upper body (30) includes a bearing seat surface (50) that is fixed by a bearing bolt to the upper surface of a swing bearing (5), a swing frame (40) that includes an intersecting side plate (42) intersecting the bearing seat surface (50) and is fixed to the bearing seat surface (50), and a force dispersing member (60). The force dispersing member (60) includes at least one vertical plate (63) extending in the up-down direction. The at least one vertical plate (63) is fixed to a region of the bearing seat surface (50) other than a force dispersion target region (55).
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7.发明公开
公开(公告)号：EP3190296A4
公开(公告)日：2017-08-23
申请号：EP15838826
申请日：2015-08-11
CPC分类号： F04B49/103 , F04B49/065 , F04B51/00 , F04B2201/1201 , F04B2205/05 , F04D15/0027 , F04D15/0088 , F15B19/005 , G01P5/14 , G01P13/00
摘要： A malfunction diagnosing device X1 that includes pistons M1 to M9 arranged in a circumferential direction and discharges oil with rotation in the circumferential direction comprises: a pressure sensor 30 for detecting a pressure value of oil discharged from a hydraulic pump in rotation; a speed sensor 40 for detecting a rotation phase of the hydraulic pump 2 at the time when a pressure value of oil is detected by the pressure sensor 30; a phase calculation part 50; and a rendering part 60 for rendering a model of a relationship between pressure values of oil detected by the pressure sensor 30 and rotation phases of the hydraulic pump 2 detected by the speed sensor 40 and the phase calculation part 50 to thereby obtain pulsating waveform data. This makes it possible to diagnose a malfunction of the hydraulic pump 2 without influence of a change in the rotation speed of the hydraulic pump 2.
摘要翻译： 包括沿圆周方向布置的活塞M1至M9并沿圆周方向旋转排放油的故障诊断装置X1包括：压力传感器30，用于检测从液压泵旋转排出的油的压力值; 速度传感器40，用于在压力传感器30检测到油的压力值时检测液压泵2的旋转相位; 相位计算部分50; 以及绘制部分60，用于绘制由压力传感器30检测到的油的压力值与由速度传感器40和相位计算部分50检测到的液压泵2的旋转相位之间的关系的模型，从而获得脉动波形数据。 这使得能够在不影响液压泵2的转速变化的情况下诊断液压泵2的故障。
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公开(公告)号：EP3135624A4
公开(公告)日：2017-04-19
申请号：EP15783912
申请日：2015-04-07
发明人： HIEKATA TAKASHI , KAWAI HIROAKI , YAMASHITA TOSHIRO , SASAI SHINTARO , HORI NAOTO , SHIMOMURA KOICHI
摘要： Provided is an electric winch device including an electric motor (14) that rotates a winch drum (12) in a hoisting direction during hoist of a target object, and generates regenerative electric power when a rotation of the winch drum (12) in a lowering direction during a freefall of the target object is transmitted to the electric motor, a transmission device (17) that transmits the rotation between the electric motor (14) and the winch drum (12), the transmission device having a variable transmission rate that is a rate of transmission of the rotation of the winch drum in the lowering direction during the freefall to the electric motor, a power calculating section (42) that calculates power of the target object by the freefall, and a control section (46) that controls an operation of the transmission device for changing the transmission rate. When the power calculated by the power calculating section (42) exceeds reference electric power set according to allowable electric power of the electric motor (14), the control section (46) causes the transmission device (17) to change the transmission rate of the rotation from the winch drum to the electric motor to a transmission rate at which the regenerative electric power generated by the electric motor is equal to or smaller than the reference electric power.
摘要翻译： 本发明提供一种电动绞盘装置，其包括在目标物体的起重机中使绞盘鼓（12）沿起重方向旋转的电动机（14），并且当绞盘鼓（12）的旋转处于降低状态时产生再生电力 在目标物体的自由落下时的方向被传送到电动机，传递装置（17），其在电动机（14）和绞盘鼓（12）之间传递旋转，传动装置具有可变的传播速率，即 在自由落体期间，向下降方向的绞盘鼓的旋转传递速率;计算自由落体的目标物体的功率的功率计算部（42）;以及控制部 用于改变传输速率的传输设备的操作。 当由功率计算部（42）计算的功率超过根据电动机（14）的容许电力设定的基准电力时，控制部（46）使发送装置（17） 从绞盘鼓向电动机的转速为电动机产生的再生电力等于或小于基准电力的传递速度。
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公开(公告)号：EP2202391A4
公开(公告)日：2016-10-05
申请号：EP08841353
申请日：2008-08-29
发明人： YOKOTA JUMPEI
CPC分类号： E02F9/0891 , B01D2251/2067 , B01D2257/402 , B01D2257/404 , B01D2257/702 , B01D2258/012 , B60K13/04 , B60Y2200/412 , E02F9/00 , E02F9/0866 , F01N3/035 , F01N13/08 , F01N2340/04 , F01N2590/08 , Y02C20/10
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公开(公告)号：EP2940315A4
公开(公告)日：2016-04-06
申请号：EP13869346
申请日：2013-12-20
发明人： GOTO NAOKI , UEDA KOJI , TAJIMA KAZUHARU
CPC分类号： E02F3/425 , E02F3/32 , E02F9/2235 , E02F9/2242 , E02F9/2267 , E02F9/2285 , E02F9/2292 , E02F9/2296 , F15B11/17 , F15B13/06 , F15B2211/20538 , F15B2211/20546 , F15B2211/20576 , F15B2211/30565 , F15B2211/31535 , F15B2211/411 , F15B2211/41509 , F15B2211/6313 , F15B2211/665 , F15B2211/71
摘要： A boom cylinder circuit (16) is provided with a boom control valve (24) for controlling supply and discharge of hydraulic oil to and from a boom cylinder (9), and a merge switching valve (25) operable to be switched between a supply position (P4) at which hydraulic oil is suppliable from a first hydraulic pump (14) to the boom control valve (24), and a blocking position (P5) at which a flow of hydraulic oil is blocked. A controller (23) switches the merge switching valve (25) to the blocking position (P5) when a combined operation of a boom lowering operation and an arm pushing operation is detected by pilot pressure sensors (20, 22), and switches the merge switching valve (25) to the supply position (P4) when only one of the boom lowering operation and the arm pushing operation is detected.
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