| 摘要 |
The present invention increases an allowable maximum weight of an object to be loaded on a conveyance device using a carriage including an object support base movable vertically controlled by cam rails on the floor side without increasing the weight of the conveyance carriage itself, and is characterized in that the object support base 11 is supported movably vertically on a conveyance carriage 1 via a crosslink mechanism 10, the crosslink mechanism 10 is provided with an elevating cam follower roller 32 which moves up and down in conjunction with standing and falling movements of the crosslink mechanism 10, and in a conveyance carriage traveling path, a cam rail 50 which pushes up the elevating cam follower roller 32 is provided, wherein an urging means 45 which urges the object support base 11 upward is provided, and an urging force of the urging means 45 is set so as to move up the object support base 11 when no object is loaded on the object support base 11, however, when an object is loaded on the object support base 11, to allow the object support base 11 to lower according to the load of the object.
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