1results about How to "Play a limit function" patented technology

This invention belongs to the field of concrete product performance testing technology and discloses a building concrete performance testing device. Existing testing devices use a method of placing precast stairs horizontally for static load pressure testing. This method is only suitable for the initial screening of precast stairs and cannot truly reflect the actual load-bearing capacity of precast stairs. The technical solution of this invention includes a frame-shaped mounting frame with several support legs fixedly installed on the bottom surface of the mounting frame. Two V-shaped hinge frames are set inside the mounting frame. Each hinge frame consists of a hinge shaft and two hinge rods. A movable shaft is set inside the mounting frame, and an adjustment device for adjusting the included angle of the hinge frames is set on the movable shaft. This invention can be applied to the testing of stairs of different lengths within a certain range. This invention can keep the precast stairs in a horizontal state to complete the initial screening of precast stairs. This invention can adjust the step surface of the precast stairs to be horizontal, so that the test results directly correspond to the actual performance in use.