发明名称 |
RAILCAR DAMPING DEVICE |
摘要 |
A railcar damping device includes: a tank storing a liquid; a first opening/closing valve provided in a first passage connecting a rod side chamber and a piston side chamber, which are defined by a piston, to be capable of opening and closing the first passage; a second opening/closing valve provided in a second passage connecting the piston side chamber and the tank to be capable of opening and closing the second passage; a pump that is driven to rotate at a predetermined normal rotation speed in order to supply the liquid from the tank to the rod side chamber; and a temperature determination unit that determines a temperature of the liquid supplied to the actuator, wherein a rotation speed of the pump is reduced below a normal rotation speed when the temperature determination unit determines that the temperature of the liquid is lower than a predetermined temperature. |
申请公布号 |
US2014196628(A1) |
申请公布日期 |
2014.07.17 |
申请号 |
US201214127916 |
申请日期 |
2012.06.19 |
申请人 |
Ogawa Takayuki;Aoki Jun;Uchida Masaru;Yabuki Chie |
发明人 |
Ogawa Takayuki;Aoki Jun;Uchida Masaru;Yabuki Chie |
分类号 |
B61F5/24 |
主分类号 |
B61F5/24 |
代理机构 |
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代理人 |
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主权项 |
1. A railcar damping device that suppresses vibration of a vehicle body by controlling an actuator,
wherein the actuator comprises: a cylinder coupled to one of a truck and a vehicle body of a railcar; a piston inserted into the cylinder to be free to slide; a rod inserted into the cylinder and coupled to the piston and the other of the truck and the vehicle body; and a rod side chamber and a piston side chamber defined within the cylinder by the piston, wherein the railcar damping device comprises: a tank that is configured to store a liquid that is supplied to and discharged from the cylinder; a first opening/closing valve provided in a first passage connecting the rod side chamber to the piston side chamber to be capable of opening and closing the first passage; a second opening/closing valve provided in a second passage connecting the piston side chamber to the tank to be capable of opening and closing the second passage; a pump that is configured to be driven to rotate at a predetermined normal rotation speed in order to supply the liquid from the tank to the rod side chamber; and a temperature determination unit that is configured to determine a temperature of the liquid supplied to the actuator, wherein a rotation speed of the pump is reduced below the normal rotation speed when the temperature determination unit determines that the temperature of the liquid is lower than a predetermined temperature. |
地址 |
Sagamihara-shi JP |