System for monitoring mechanical tolerance and method thereof

The invention relates to a system for monitoring mechanical tolerance and a method thereof. The system is used for monitoring mechanical tolerance of an insulator chain and its connection fitting. The system is disposed on a horizontal plane and comprises a reinforced concrete foundation (1) at the ground level and a reinforced concrete foundation (1) fixing neck (2). A tension extending chain (7), a hydraulic tensile machine (4) and a anchor device (3) are connected in order, wherein the hydraulic tensile machine (4), a tension sensor (8) and a measuring and control device (9) are connected in order. The method provided by the invention comprises the following steps: (1) placing an insulator chain to be tested and a fitting into a testing system; (2) connecting the anchor device (3), the test insulator chain (5), a connection fitting (6), the tension extending chain (7) and the hydraulic tensile machine (4) in order; and (3) carrying out a tolerance test. The anchor device can be installed on the neck so as