| 摘要 |
PURPOSE:To prevent reliably oblique motion and damage of end fringes of an upper and lower endless belt, by a method wherein parts having difference in level against which the end fringes of the upper and lower endless belts abut are formed on the top and bottom of elemental chains each constituting a slat chain. CONSTITUTION:The front and rear of an elemental chain 20 are provided respectively with pin holes 20a, 20b, the front of the next elemental chain 20' is inserted into the rear of the elemental chain 20 and endless slat chains 60, 70 are formed by inserting pins 24 in order. A spacer 21 possessing a thickness corresponding almost to a board thickness of a boardlike molded body is fitted unitarily to the outside of a main body part of the each elemental chain 20 and external circumferential surface of end parts of endless belts 4, 5 perform sliding contact with the top and bottom. On the one hand, the outside of the elemental chain 20 is constituted so that end fringes of the endless belts 4, 5 abut against the same and a part 23 having difference in level is formed. Consequently, even if the endless belts 4, 5 are apt to move obliquely, oblique motion is not performed by being controlled with the part 23 having the difference in level. |
