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A reference frame in which the time coordinate defines proper time for all co-moving observers is called "synchronous". It is built by choosing some constant time hypersurface as an origin, such that has in every point a normal along the time line (lies inside the light cone with an apex in that point); all interval elements on this hypersurface are space-like. A family of geodesics normal to this hypersurface are drawn and defined as the time coordinates with a beginning at the hypersurface.
Block forming machine stripping synchronizing device
The utility model relates to a kind of block forming machine demolding synchronous devices, including synchronous gear, synchronous frame and two parallelly arranged synchronous shafts, both ends of each the synchronous shaft are equipped with synchronous gear, and the same side end of two synchronous shafts is connected by synchronous frame, the synchronous frame includes adjusting frame, connecting rod, demolding ejector rod and two parallelly arranged racks, the tooth surface of two racks is oppositely arranged, and two racks are respectively engaged with the synchronous gear on corresponding synchronous shaft, the connecting rod is connected in the lower end of two racks, the demolding ejector rod is connected in the upper end of two racks, the position of the rack on connecting rod and demolding ejector rod is adjustable, and the both ends of adjusting frame are equipped with adjusting bolt in pairs, and the adjusting bolt of the both ends of adjusting frame is respectively abutted on the outside of two racks. The block forming machine demolding synchronous device of the utility model can ensure the engagement of rack and gear by adjusting.
Owner:QUANGONG MACHINERY