Embedded ball hinge device for axial pressure test
An axial compression test and embedded technology, which is applied in the direction of measuring devices, testing of mechanical components, testing of machine/structural components, etc., can solve problems such as potential safety hazards
Pending Publication Date: 2020-06-19
TIANJIN UNIV
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Problems solved by technology
The spherical hinge device can realize the free rotation of the component in all directions. It is an ideal spherical hinge support. However, contact force is used between the upper hemispherical hinge and the lower hemispherical hinge, and between the spherical hinge and the component. When the component is in an unstable state , there will be a safety hazard
Method used
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Embodiment Construction
[0030] Such as Figure 1-11 The shown embedded ball joint device for axial compression test includes steel ball 2, and the bottom of steel ball 2 is closely attached to ball seat 7, the upper surface of ball seat 7 is a spherical surface that fits with steel ball 2, and the ball seat 7 maintains tangential and smooth contact with the steel ball 2, and the bottom of the ball seat 7 is fixedly connected with an end plate 8, and the end plate 8 and the ball seat 7 are fixedly connected by welding. A lower ball groove 4 and an upper ball groove 3 are arranged on the top of the end plate 8 around the steel ball 2 from bottom to top. A sleeve 1 is fixedly connected above the steel ball 2, and components are inserted into the sleeve 1 for axial compression testing. The sleeve 1 and the steel ball 2 are fixedly connected by welding. A partition 9 is provided inside the casing 1 tangent to the steel ball 2 , and the cross-sectional shape of the casing 1 can be rectangular, circular, L...
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The invention provides an embedded ball hinge device for an axial pressure test, which comprises a steel ball. A ball seat is clung to the bottom of the steel ball; the upper surface of the ball seatis a ball surface matched with the steel ball; the bottom of the ball seat is fixedly connected with an end plate; a lower ball groove and an upper ball groove are sequentially formed in the upper portion of the end plate around the steel ball from bottom to top; a sleeve is fixedly connected to the upper portion of the steel ball; a partition plate tangent to the steel ball is arranged in the sleeve; the centroid of the section of the sleeve is located on the central axis of the ball seat; and the upper ball groove, the lower ball groove and a locking nut are fixedly connected through a stud.The steel ball can universally rotate in the groove when axial pressure is loaded, so that the steel ball can be replaced according to test requirements, and a lubricating agent can be supplemented in time.
Description
technical field [0001] The present invention relates to the technical field of axial compression test of steel components, and more particularly relates to an embedded spherical joint device for axial compression test. Background technique [0002] The axial compression test of steel members is one of the important test types in the basic research of steel structures. For the axial compression test, both ends of the member need to simulate hinge joints. At present, the commonly used hinge simulation devices mainly include three types of devices: single-knife-edge hinge, double-knife-edge hinge and universal spherical hinge. [0003] The single knife-edge hinge can realize the free rotation of the component around a single direction, realizing the hinge constraint of the component in one direction; the double knife-edge hinge can realize the free rotation of the component around two orthogonal directions, and realize the hinge constraint of the component in two orthogonal di...
Claims
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IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 刘红波于磊陈志华贾莉周婷
Owner TIANJIN UNIV