Construction machine
    2.
    发明申请
    Construction machine 审中-公开
    施工机械

    公开(公告)号:US20060225940A1

    公开(公告)日:2006-10-12

    申请号:US10555767

    申请日:2004-09-21

    IPC分类号: B60K28/00

    CPC分类号: B60Q1/0017 B60Q5/00 E02F9/24

    摘要: The present invention provides a construction machine adopting a structure that assures a predetermined sound pressure level along a forward direction relative to the construction machine and allows a warning horn to be miniaturized. Warning horns 12 and 13 are mounted in the vicinity of at least either a left headlamp 9 or a right headlamp 10 provided on the left side and the right side of a vehicle body 3 of the construction machine. The warning horns 12 and 13 are housed inside a bracket 11 used to mount the headlamp 9 or 10. The plurality of warning horns 12 and 13 are disposed on a single side toward the left headlamp 9 or the right headlamp 10. Since a front attachment 7 does not block the sound generated from the warning horns 12 and 13 and thus the warning sound can travel without hindrance along the forward direction, a predetermined sound pressure level is achieved with ease along the forward direction relative to the vehicle body 3.

    摘要翻译: 本发明提供一种施工机械,其采用相对于施工机械沿着向前方向确保预定声压级的结构,并且允许警告喇叭小型化。 警告喇叭12和13安装在设置在建筑机械的车身3的左侧和右侧的左前照灯9或右前照灯10的附近。 警告喇叭12和13容纳在用于安装前照灯9或10的支架11内。 多个警告喇叭12和13设置在朝向左前照灯9或右前照灯10的单侧上。 由于前部附件7不阻挡从警告喇叭12和13产生的声音,因此警告声音可以沿着向前方向无阻碍地行进,因此相对于车体沿着向前方向容易地实现预定的声压级 3。

    Process for producing glutaconic acid derivatives
    5.
    发明授权
    Process for producing glutaconic acid derivatives 失效
    生产戊烯酸衍生物的方法

    公开(公告)号:US4713461A

    公开(公告)日:1987-12-15

    申请号:US763784

    申请日:1985-08-08

    摘要: A useful intermediate, glutaconic acid ester derivative (III), is prepared by Michael-type condensation of thiazoleacetic acid derivative (I) with alkoxyacrylic acid derivative (II) in the presence of base. ##STR1## (wherein, R is amino or protected amino;R.sup.1 is an ester forming group;R.sup.2 is hydrogen, cyano, or esterified carboxy;R.sup.3 is hydrogen, cyano, or esterified carboxy; andR.sup.4 is lower alkyl or aralkyl).

    摘要翻译: 通过在碱存在下,将噻唑乙酸衍生物(I)与烷氧基丙烯酸衍生物(II)进行迈克尔型缩合制备有用的中间体戊烯酸酯衍生物(III)。 (III)(III)(III)(其中,R为氨基或被保护的氨基; R1为成酯基团; R2为氢,氰基或酯化羧基; R3为氢,氰基 或酯化的羧基;且R 4为低级烷基或芳烷基)。

    Control system for hydraulic pump
    7.
    发明授权
    Control system for hydraulic pump 失效
    液压泵控制系统

    公开(公告)号:US5170625A

    公开(公告)日:1992-12-15

    申请号:US601798

    申请日:1990-10-31

    摘要: A control system for a hydraulic pump in a hydraulic drive circuit includes at least one hydraulic pump whose displacement volume is variable, at least one hydraulic actuator driven by a hydraulic fluid delivered from the hydraulic pump, and a flow control valve connected between the hydraulic pump and the actuator for controlling a flow rate of the hydraulic fluid supplied to the actuator. In the control system, the target value of the differential pressure between the delivery pressure of the hydraulic pump and the load pressure of the actuator is preset, and the displacement volume is varied dependent on the deviation between the differential pressure and its target value for controlling a pump delivery rate so that the differential pressure is held at the target value. The control system further influences the change rate of the delivery pressure of the hydraulic pump with respect to the change in the displacement volume of the hydraulic pump, and determines a control gain (Ki) for the change rate of the displacement volume from the received value; and controls the displacement volume of the hydraulic pump in accordance with the control gain and the differential pressure deviation.

    摘要翻译: PCT No.PCT / JP90 / 00962 Sec。 371 1990年10月31日第 102(e)1990年10月31日PCT PCT 1990年7月27日PCT公布。 公开号WO91 / 02167 日本1991年2月21日。液压驱动电路中的液压泵的控制系统包括至少一个液压泵,其排量可变,由液压泵输送的液压流体驱动的至少一个液压致动器, 控制阀连接在液压泵和致动器之间,用于控制供应到致动器的液压流体的流量。 在控制系统中,预先设定液压泵的输出压力与执行机构的负荷压力之间的压力差的目标值,并根据差压与其控制目标值之间的偏差来改变排量 泵输送速率使得压差保持在目标值。 控制系统进一步影响液压泵的输送压力相对于液压泵的排量的变化的变化率,并根据接收值确定排量的变化率的控制增益(Ki) ; 并根据控制增益和差压偏差来控制液压泵的排量。