Variable size type frame device for box culvert production

摘要

Abstract Topic Being suited for the production of the box culvert where size differsIs the variable size type frame device is offered. SolutionsInside lower part of firing base 1d in well letter condition rectangular metal tubingSlide tube 2a and 2b which become the ri on, in the lower two steps the taking sticking and the rackTo the base periphery edge the steel sheet which provides the notch of 8 places which are dented CarryIn both aperture edge of upper limbs, slide tube 2a and 2b, under slidingTo provide the roller 3a which touches to the surface, from both aperture edge in the Tip suraido tube 2a and the roller which touches to the 2b inside surface taking sura which sticksTo interpose idoba 3, slide tube 2 of slide bar 3a, from 2b in the part which projects, burake which rises verticallytsuto 4 in taking sticking and the Tip die body of box culvertFramework 5 the slide bar 2 which installs the taking sticking and bracket 4a, way 2b can appear frequently from slide tube 2a and 2b,It does, socket 6 on the steel sheet where outside molding box 4 provides the notchThe pushing it can overpower, from four side facing toward inside. That it will produceWith the size of the box culvert which it does, outside molding box 5 takingThe slide bar 3 which sticks, dent of the notch is taken in and out,The structure which can correspond to the box culvert of the te and optional sizeIt makes structure.