Large high load spherical hinge testing machine

Abstract

The invention relates to a large high-load ball joint tester, which comprises a frame-type pressure bearing rack, wherein a horizontally arranged lifting working platform capable of lifting in the vertical direction is arranged on the frame-type pressure bearing rack, and the lifting working platform is connected with a loading lifting driving mechanism; two symmetrically arranged support ball joint seats with support ball joints inside are arranged on the lifting working platform, and a test ball joint seat with a test ball joint inside positioned between the two support ball joint seats is arranged on the inner top wall of the frame-type pressure bearing rack. The tester also comprises a test spindle which can be inserted into the support ball joints and the test ball joint and is circumferentially and fixedly connected with the support ball joints and the test ball joint, and the back end of the test spindle is connected with a swing arm; the swing arm is connected with a swing driving mechanism which can drive the swing arm to swing in the vertical direction so as to drive the test spindle to swing back and forth along the axis direction of the test spindle. The large high-load ball joint tester provided by the invention has the advantage of strong practicality.

Description

technical field [0001] The invention belongs to the technical field of testing machines, and relates to a ball joint test for supporting nuclear steam generators, in particular to a large-scale high-load ball joint test machine. Background technique [0002] Large spherical joints have a wide range of engineering applications, harsh use environments, strong structural importance, and generally require oil-free lubrication, and their important performance indicators need to be determined through simulation experiments. [0003] For example, the ball joint used for nuclear steam generator support has a large load-carrying specific pressure and a high operating environment temperature. It requires oil-free lubrication, guarantees a service life of 60 years, and can cope with geological disasters such as earthquakes. As a key component for support, a special testing machine is needed to test the performance of the ball joint and ensure the quality of the ball joint. [0004] In...

AI Technical Summary

Problems solved by technology

[0004] In the past, the test equipment could not simulate complex working conditions, but foreign countries used the base plate grinding test to simply obtain the friction coefficient between the grinding surfaces of the ball joint to map the use status of the ball joint

This approach is relatively one-sided. The bearing friction of spherical surfaces is different from that of plane bearings, and cannot reflect the use status of spherical joints within 60 years under the guaranteed safety factor.

Moreover, there is no domestic equipment specially designed for the verification test of large-scale high-load spherical joints

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