Compression creep tester

The invention relates to a compression creep tester mainly used for the compression creep test of a rigid polyurethane foaming plastic. The tester is characterized by mainly comprising a high temperature tank (1) and three compression creep testing machines (2), wherein the compression creep testing machines comprise sample frames (3), stand columns (4), clamps (5), displacement sensors (6), scale pans (7), guide pillars (8) and pressure heads (9), wherein the sample frames (3) are composed of bases (3.1), braces (3.2) and support plates (3.3), the support plates (3.3) and the bases (3.1) are arranged up and down, and are connected with each other through the braces (3.2); the stand columns (4) are fixed on the support plates (3.3); the guide pillars (8) penetrate through the support plates (3.3), the top ends of the guide pillars (8) are connected with the scale pans (7), and the bottom ends of the guide pillars are connected with the pressure heads (9). The tester has the advantages of short test period, hi