To provide an unmanned carrier car capable of constantly grounding four caster wheels on a travelling road surface and keeping tightening pressure of a chain constant.
This unmanned carrier device has an upper part frame 17 fixed on a load carrying platform to load a load material, a driving part 12 arranged below the upper part frame 17 and having a driving wheel 11 and a lower part frame 16 fixed on the driving part 12 and is devised to constantly ground the caster wheels mounted on the load carrying platform on the travelling road surface by maintaining the load carrying platform horizontal by interposing a compression coil spring 18 and interposing a connecting mechanism 20 between the upper part frame 17 and the lower part frame 16.
COPYRIGHT: (C)2007,JPO&INPIT
| JP2007210405A | 2007-08-23 | |||
| JPS5938176A | 1984-03-01 | |||
| JPH02182539A | 1990-07-17 | |||
| JPS63138275A | 1988-06-10 | |||
| JPH01125706A | 1989-05-18 | |||
| JP2000142012A | 2000-05-23 | |||
| JPS6490809A | 1989-04-07 | |||
| JPS63297165A | 1988-12-05 | |||
| JP2000279461A | 2000-10-10 |
Tadahiro Mitsuishi
Yasuyuki Tanaka
Hiroshi Matsumoto
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