公开(公告)号：EP4039892A1

公开(公告)日：2022-08-10

申请号：EP20871610.0

申请日：2020-09-29

Applicant: Hitachi Construction Machinery Co., Ltd.

Inventor： AKITA, Tarou ,  KOBAYASHI, Takahiro ,  NARAZAKI, Akihiro ,  ITO, Masamichi

IPC: E02F9/22

Abstract: When an operation amount of an operation lever 1a or 1b corresponding to a boom cylinder 5 is equal to or smaller than an operation amount of an operation lever 1a or 1b corresponding to an arm cylinder 6, an estimated velocity of the arm cylinder used for region limiting control is computed on the basis of a first condition defining, in advance, a relation between the operation amount of the operation lever 1a or 1b and the estimated velocity of the arm cylinder 6. When the operation amount of the operation lever 1a or 1b corresponding to the boom cylinder 5 is larger than the operation amount of the operation lever 1a or 1b corresponding to the arm cylinder 6, the estimated velocity of the arm cylinder 6 used for the region limiting control is computed as a velocity higher than the estimated velocity of the arm cylinder 6 computed on the basis of the first condition. The behavior of a work device can thereby be stabilized.

公开(公告)号：EP2287030A1

公开(公告)日：2011-02-23

申请号：EP09750420.3

申请日：2009-03-19

Applicant: Hitachi Construction Machinery Co., Ltd

Inventor： KAMATA, Hiroyuki ,  KOBAYASHI, Takahiro ,  ABE, Toshihiro

IPC: B60K13/04 ,  B60K5/12 ,  E02F9/16 ,  F01N7/08 ,  F01N7/14 ,  F02B77/11 ,  F16F15/08

CPC classification number: E02F9/0866 ,  B60K5/1208 ,  B60K13/04 ,  E02F9/00 ,  F01N13/1816 ,  F01N13/1822 ,  F01N2560/08

Abstract: An engine (8) is mounted to a vehicle body by means of vibration isolating mounts (8E), and a support member (15) is mounted to the engine (8). Vibration isolating members (20) are provided between this support member (15) and a mounting bracket (17) mounted to an exhaust gas treatment device (16). Accordingly, even in cases where the engine (8) has generated high-frequency vibrations, these vibrations can be damped by the vibration isolating mounts (8E) and the vibration isolating members (20). In consequence, treatment members constituting the exhaust gas treatment device (16), such as a catalyst, a filter, and a sensor, can be protected from the vibrations of the engine (8). In addition, as the exhaust gas treatment device (16) is provided with the mounting bracket (17), the vibration isolating members (20) can be reliably mounted to the exhaust gas treatment device (16) by means of the mounting bracket (17).

Abstract translation: 发动机（8）借助隔振安装件（8E）安装到车体上，并且支撑构件（15）安装到发动机（8）。 在该支承部件15与安装在废气处理装置16上的安装托架17之间设有防振部件20。 因此，即使在发动机（8）产生高频振动的情况下，这些振动也能够通过防振支架（8E）和防振部件（20）而被缓冲。 其结果是，能够防止构成废气处理装置16的催化剂，过滤器，传感器等处理构件受到发动机8的振动的影响。 另外，由于排气处理装置（16）具备安装托架（17），所以能够通过安装托架（17）将防振部件（20）可靠地安装到排气处理装置（16） ）。