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公开(公告)号：US20100101888A1
公开(公告)日：2010-04-29
申请号：US12523937
申请日：2008-01-22
IPC分类号： B62D5/09
CPC分类号： B62D1/22 , B62D5/09 , B62D12/00 , E02F9/2228 , E02F9/225 , E02F9/2285
摘要： [Problem] To provide a steering system for a construction vehicle, which is suited not only for traveling on general roadways but also for work at construction sites and can perform high-reliability steering control.[Solution] A steering system for a construction vehicle is provided with a directional control valve 5 for controlling a flow of pressure oil to body-articulating hydraulic cylinders 2 that perform steering and also with a steering-wheel-operated signal generation means 6 for outputting by operation of a steering wheel 7a a pilot signal to the directional control valve 5 for switching the valve 5. The steering system is also provided with a lever-operated signal generation means for producing by operation of a lever 10a a pilot signal to switch the directional control valve 5, said lever-operated signal generation means including pressure-proportional solenoid valves 12a,12b or the like, selector valves 13a,13b switchable to permit selectively outputting the pilot signal from one of the signal generation means to the directional control valve 5, and an automated switching means for switching the selector valves 13a,13b such that upon operation of the steering wheel 7a, the pilot signal from the steering-wheel-operated signal generation means 6 can be preferentially outputted to the directional control valve 5.
摘要翻译： [问题]提供一种用于施工车辆的转向系统，其不仅适用于在一般道路上行驶，而且适用于在施工现场的工作，并且可以执行高可靠性的转向控制。 [解决方案]用于施工车辆的转向系统设置有用于控制压力油流向执行转向的身体关节液压缸2的方向控制阀5以及用于输出的方向盘操作信号产生装置6 方向盘7a通过操作方向控制阀5的导向信号来切换阀5.转向系统还设置有杆操作信号产生装置，用于通过杆10a的操作产生一个导向信号，以切换 方向控制阀5，所述杠杆操作信号发生装置包括比例电磁阀12a，12b等，切换阀13a，13b可切换到允许选择性地将导频信号从信号发生装置之一输出到方向控制阀 以及用于切换选择阀13a，13b的自动切换装置，使得在方向盘7a操作时，导频信号 从方向盘操作信号发生装置6可以优先输出到方向控制阀5。
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公开(公告)号：US07913801B2
公开(公告)日：2011-03-29
申请号：US12523937
申请日：2008-01-22
IPC分类号： B62D5/04
CPC分类号： B62D1/22 , B62D5/09 , B62D12/00 , E02F9/2228 , E02F9/225 , E02F9/2285
摘要： To provide a steering system for a construction vehicle, which is suited not only for traveling on general roadways but also for work at construction sites and can perform high-reliability steering control.A steering system for a construction vehicle is provided with a directional control valve 5 for controlling a flow of pressure oil to body-articulating hydraulic cylinders 2 that perform steering and also with a steering-wheel-operated signal generation means 6 for outputting by operation of a steering wheel 7a a pilot signal to the directional control valve 5 for switching the valve 5. The steering system is also provided with a lever-operated signal generation means for producing by operation of a lever 10a a pilot signal to switch the directional control valve 5, said lever-operated signal generation means including pressure-proportional solenoid valves 12a,12b or the like, selector valves 13a,13b switchable to permit selectively outputting the pilot signal from one of the signal generation means to the directional control valve 5, and an automated switching means for switching the selector valves 13a,13b such that upon operation of the steering wheel 7a, the pilot signal from the steering-wheel-operated signal generation means 6 can be preferentially outputted to the directional control valve 5.
摘要翻译： 提供一种适用于工程车辆的转向系统，不仅适用于一般道路行驶，而且适用于施工现场的工作，还可进行高可靠性的转向控制。 用于施工车辆的转向系统设置有用于控制压力油流向执行转向的身体关节液压缸2的方向控制阀5，以及用于通过操作输出的方向盘操作信号产生装置6输出 方向盘7a向方向控制阀5提供用于切换阀5的导向信号。转向系统还设置有操作杆操作信号产生装置，用于通过操作杆10a产生一个导向信号以切换方向控制阀 如图5所示，所述杠杆操作信号发生装置包括比例电磁阀12a，12b等，切换阀13a，13b可切换以允许选择性地将信号从信号发生装置中的一个输出到方向控制阀5;以及 用于切换选择阀13a，13b的自动切换装置，使得在方向盘7a操作时，来自s的导频信号 可以将方向盘操作信号发生装置6优先输出到方向控制阀5。
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公开(公告)号：US09341198B2
公开(公告)日：2016-05-17
申请号：US14118141
申请日：2012-05-17
申请人： Tsuyoshi Nakamura , Kazunori Nakamura , Yasuo Okano , Kouji Ishikawa , Kensuke Sato , Hiroyuki Azuma , Mitsuhiko Kanehama , Yusuke Kajita
发明人： Tsuyoshi Nakamura , Kazunori Nakamura , Yasuo Okano , Kouji Ishikawa , Kensuke Sato , Hiroyuki Azuma , Mitsuhiko Kanehama , Yusuke Kajita
CPC分类号： F15B15/20 , E02F9/123 , E02F9/2217 , E02F9/2242 , E02F9/2285 , E02F9/2292 , E02F9/2296
摘要： A hydraulic drive device for a hydraulic excavator, includes: a first hydraulic pump; a first boom directional control valve and a second arm directional control valve which are connected in parallel to the first pump; a second hydraulic pump; and a second boom directional control valve and a first arm directional control valve which are connected in parallel to the second pump; wherein: the hydraulic drive device also includes: a third hydraulic pump; a third boom directional control valve connected to the third pump and controlling the flow of pressure oil supplied to a boom cylinder; and a third arm directional control valve connected in tandem with the third boom directional control valve and controlling the flow of pressure oil supplied to an arm cylinder.
摘要翻译： 一种用于液压挖掘机的液压驱动装置，包括：第一液压泵; 与第一泵并联连接的第一起重臂方向控制阀和第二臂方向控制阀; 第二液压泵; 以及与第二泵并联连接的第二起重臂方向控制阀和第一臂方向控制阀; 其中：液压驱动装置还包括：第三液压泵; 连接到第三泵的第三起重臂方向控制阀，并控制供应到动臂缸的压力油的流动; 以及与第三动臂方向控制阀串联连接的第三臂方向控制阀，并控制供给到手臂缸的压力油的流动。
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公开(公告)号：US08160778B2
公开(公告)日：2012-04-17
申请号：US12377393
申请日：2007-12-26
IPC分类号： B62D5/28
CPC分类号： B62D12/00 , B62D5/065 , B62D5/075 , B62D5/09 , E02F9/225 , E02F9/2253 , E02F9/2285 , E02F9/2296
摘要： A hydraulic steering unit 5 generates a control pressure corresponding to the rotational quantity and rotational direction of the steering wheel 109 on the basis of pressurized oil of a pilot pump 13. Signals of pressure sensors 6a and 6b used to detect the control pressure, and a signal of a front operation detection unit 31, are inputted into a controller 132. A controller 32 and solenoid valves 33a and 33b control a stroke of a steering valve 4 so that the stroke becomes larger with increase in control pressure detected by each of the pressure sensors 6a and 6b. In addition, when the operation of a front work device is detected, the controller 32 and the solenoid valves 33a and 33b control the stroke of the steering valve 4 so that the stroke becomes larger than that provided when the operation of the front work device is not detected.
摘要翻译： 液压转向单元5基于先导泵13的加压油产生与方向盘109的旋转量和旋转方向对应的控制压力。用于检测控制压力的压力传感器6a和6b的信号，以及 前部操作检测单元31的信号被输入到控制器132中。控制器32和电磁阀33a和33b控制转向阀4的行程，使得随着每个压力检测到的控制压力的增加，行程变大 传感器6a和6b。 此外，当检测到前工作装置的操作时，控制器32和电磁阀33a和33b控制转向阀4的行程，使得行程变得大于当前工作装置的操作是 没有检测到。
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公开(公告)号：US20090255750A1
公开(公告)日：2009-10-15
申请号：US12303288
申请日：2007-12-07
摘要： A priority valve 7 is disposed between a hydraulic pump 2 and a steering valve 4 and is used to supply priority steering cylinders 103a and 103b with pressurized oil discharged from the hydraulic pump 2 by controlling the differential pressure across a meter-in hydraulic line of the steering valve 4 such that the differential pressure is kept at a target value. A pressure sensor 31 for detecting the load pressures of the steering cylinders 103a and 103b is provided. On the basis of the detected load pressures, the target value set for the priority valve 7 is modified by devices including a controller 32, a solenoid valve 33, a pilot hydraulic line 29, and a pressure receiving unit 24c of the priority valve 7. The above configuration enables suppression of a shock occurring at the start of turning of the steering wheel.
摘要翻译： 优先阀7设置在液压泵2和转向阀4之间，并且用于通过控制液压泵2的流入液压管路中的压差来向液压泵2排出的加压油供应优先转向缸103a和103b。 转向阀4使差压保持在目标值。 设置有用于检测转向缸103a，103b的负载压力的压力传感器31。 基于检测到的负载压力，通过包括优先阀7的控制器32，电磁阀33，先导液压管路29和压力接收单元24c的装置来改变对优先阀7设定的目标值。 上述结构能够抑制在方向盘转动开始时发生的冲击。
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公开(公告)号：US20140090369A1
公开(公告)日：2014-04-03
申请号：US14118141
申请日：2012-05-17
申请人： Tsuyoshi Nakamura , Kazunori Nakamura , Yasuo Okano , Kouji Ishikawa , Kensuke Sato , Hiroyuki Azuma , Mitsuhiko Kanehama , Yusuke Kajita
发明人： Tsuyoshi Nakamura , Kazunori Nakamura , Yasuo Okano , Kouji Ishikawa , Kensuke Sato , Hiroyuki Azuma , Mitsuhiko Kanehama , Yusuke Kajita
IPC分类号： F15B15/20
CPC分类号： F15B15/20 , E02F9/123 , E02F9/2217 , E02F9/2242 , E02F9/2285 , E02F9/2292 , E02F9/2296
摘要： A hydraulic drive device for a hydraulic excavator, includes: a first hydraulic pump; a first boom directional control valve and a second arm directional control valve which are connected in parallel to the first pump; a second hydraulic pump; and a second boom directional control valve and a first arm directional control valve which are connected in parallel to the second pump; wherein: the hydraulic drive device also includes: a third hydraulic pump; a third boom directional control valve connected to the third pump and controlling the flow of pressure oil supplied to a boom cylinder; and a third arm directional control valve connected in tandem with the third boom directional control valve and controlling the flow of pressure oil supplied to an arm cylinder.
摘要翻译： 一种用于液压挖掘机的液压驱动装置，包括：第一液压泵; 与第一泵并联连接的第一起重臂方向控制阀和第二臂方向控制阀; 第二液压泵; 以及与第二泵并联连接的第二起重臂方向控制阀和第一臂方向控制阀; 其中：液压驱动装置还包括：第三液压泵; 连接到第三泵的第三起重臂方向控制阀，并控制供应到动臂缸的压力油的流动; 以及与第三动臂方向控制阀串联连接的第三臂方向控制阀，并控制供给到手臂缸的压力油的流动。
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公开(公告)号：US07891458B2
公开(公告)日：2011-02-22
申请号：US12303288
申请日：2007-12-07
IPC分类号： B62D5/06
摘要： A priority valve 7 is disposed between a hydraulic pump 2 and a steering valve 4 and is used to supply priority steering cylinders 103a and 103b with pressurized oil discharged from the hydraulic pump 2 by controlling the differential pressure across a meter-in hydraulic line of the steering valve 4 such that the differential pressure is kept at a target value. A pressure sensor 31 for detecting the load pressures of the steering cylinders 103a and 103b is provided. On the basis of the detected load pressures, the target value set for the priority valve 7 is modified by devices including a controller 32, a solenoid valve 33, a pilot hydraulic line 29, and a pressure receiving unit 24c of the priority valve 7. The above configuration enables suppression of a shock occurring at the start of turning of the steering wheel.
摘要翻译： 优先阀7设置在液压泵2和转向阀4之间，并且用于通过控制液压泵2的流入液压管路中的压差来向液压泵2排出的加压油供应优先转向缸103a和103b。 转向阀4使差压保持在目标值。 设置有用于检测转向缸103a，103b的负载压力的压力传感器31。 基于检测到的负载压力，通过包括优先阀7的控制器32，电磁阀33，先导液压管路29和压力接收单元24c的装置来改变对优先阀7设定的目标值。 上述结构能够抑制在方向盘转动开始时发生的冲击。
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公开(公告)号：US20100228439A1
公开(公告)日：2010-09-09
申请号：US12377393
申请日：2007-12-26
CPC分类号： B62D12/00 , B62D5/065 , B62D5/075 , B62D5/09 , E02F9/225 , E02F9/2253 , E02F9/2285 , E02F9/2296
摘要： A hydraulic steering unit 5 generates a control pressure corresponding to the rotational quantity and rotational direction of the steering wheel 109 on the basis of pressurized oil of a pilot pump 13. Signals of pressure sensors 6a and 6b used to detect the control pressure, and a signal of a front operation detection unit 31, are inputted into a controller 132. A controller 32 and solenoid valves 33a and 33b control a stroke of a steering valve 4 so that the stroke becomes larger with increase in control pressure detected by each of the pressure sensors 6a and 6b. In addition when the operation of a front work device is detected, the controller 32 and the solenoid valves 33a and 33b control the stroke of the steering valve 4 so that the stroke becomes larger than that provided when the operation of the front work device is not detected.
摘要翻译： 液压转向单元5基于先导泵13的加压油产生与方向盘109的旋转量和旋转方向对应的控制压力。用于检测控制压力的压力传感器6a和6b的信号，以及 前部操作检测单元31的信号被输入到控制器132中。控制器32和电磁阀33a和33b控制转向阀4的行程，使得随着每个压力检测到的控制压力的增加，行程变大 传感器6a和6b。 此外，当检测到前工作装置的操作时，控制器32和电磁阀33a和33b控制转向阀4的行程，使得行程变得大于前工作装置的操作时提供的行程 检测到。
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公开(公告)号：US20130319787A1
公开(公告)日：2013-12-05
申请号：US13991471
申请日：2012-01-19
IPC分类号： E02F9/08
CPC分类号： E02F9/0866 , B60K13/04 , B60W2300/17 , F01N13/1816 , F01N13/1822 , F01N2530/22 , F01N2590/08
摘要： On an upper revolving structure, an engine having an exhaust port is mounted. In the midway portion of the exhaust pipe connecting the exhaust port of the engine and an exhaust gas post-treatment device, a first bellows pipe and a second bellows pipe are arranged through a connecting pipe having an L-shaped bending portion. In this case, the first bellows pipe and the second bellows pipe are arranged so as to have a positional relationship in which axis lines thereof (X1-X1, Z1-Z1) cross each other. That is, the first bellows pipe is arranged in a horizontal direction so that its axis line (X1-X1) extends in the left-right direction of the upper revolving structure. The second bellows pipe is arranged so that its axis line (Z1-Z1) matches the vertical direction of the upper revolving structure.
摘要翻译： 在上部旋转结构上安装具有排气口的发动机。 在连接发动机排气口的排气管的中途部分和废气后处理装置之间，通过具有L形弯曲部分的连接管布置第一波纹管和第二波纹管。 在这种情况下，第一波纹管和第二波纹管配置成具有其轴线（X1-X1，Z1-Z1）彼此交叉的位置关系。 也就是说，第一波纹管沿水平方向布置，使得其轴线（X1-X1）沿上旋转结构的左右方向延伸。 第二波纹管配置成使其轴线（Z1-Z1）与上部旋转体的垂直方向一致。
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公开(公告)号：US20130294876A1
公开(公告)日：2013-11-07
申请号：US13979580
申请日：2012-01-10
CPC分类号： E02F9/0866 , E02F3/30 , E02F9/0883 , F01N2340/04 , F01N2590/08 , F01N2610/02 , F01N2610/14
摘要： To provide a construct ion machine in which the temperature of a battery and aqueous urea within an aqueous urea tank can be prevented from rising and high stability can be secured in the vehicle body.A small turning type hydraulic excavator (1) including: a counterweight (6) disposed at the rear of a turning upperstructure (3) provided with a front work machine (4) in the front thereof; an engine (5a) disposed within an engine room (5) in front of the counterweight (6); a heat exchanger (15) exchanging heat with the engine (5a); a fan (16) introducing outside air from an intake port (5b) formed in the exterior of the engine room (5) into the engine room (5) to cool the heat exchanger (15); a tail pipe (20) disposed on the exterior of the engine room (5); an aqueous urea tank (12) storing aqueous urea that purifies the exhaust gas discharged from the engine (5a); and batteries (13a, 13b) supplying electric power to the engine (5a), wherein: both the aqueous urea tank (12) and the batteries (13a, 13b) are disposed on an upstream side of the heat exchanger (15) in a flow direction of the outside air.
摘要翻译： 为了提供能够防止尿素水箱内的电池和尿素的温度升高的结构离子机，能够确保车体的高稳定性。 一种小型转动式液压挖掘机（1），包括：设置在其前面设置有前工作机械（4）的车削上部结构（3）的后部的配重（6） 配置在配重（6）前面的发动机室（5）内的发动机（5a）; 与发动机（5a）进行热交换的热交换器（15）; 将形成在所述发动机室（5）的外部的进气口（5b）的外部空气引入所述发动机室（5）以冷却所述热交换器（15）的风扇（16）; 设置在所述发动机室（5）的外部的尾管（20）; 储存尿素的尿素水箱（12），其净化从所述发动机（5a）排出的废气; 以及向发动机（5a）供给电力的电池（13a，13b），其中：所述尿素水箱（12）和所述电池（13a，13b）都在所述热交换器（15）的上游侧配置在 外部空气的流动方向。
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