Accurate large-diameter pipe inner diameter measuring scale

A technology of large-diameter tubes and precise measuring rulers, which is applied in the direction of mechanical diameter measurement, etc., can solve the problems of low accuracy of results, inconvenient diameter finding, and inaccurate results, etc., to achieve simple and convenient diameters, enhance link stability, and convert The effect is simple and convenient

CN108180811AInactive Publication Date: 2018-06-19SUZHOU FANGZHENG ENG TECH DEV TESTING
6 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-06-19
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses an accurate large-diameter pipe inner diameter measuring scale which comprises a measured pipe and a main measuring stick, wherein an extension bar is clamped on the top of themain measuring stick; the top of the extension bar is linked with a spring type displacement sensor; the upper surface of the spring type displacement sensor is mutually attached to the inner surfacewall of the measured pipe; the surface of the main measuring stick is positioned below a radial supporting leg adjusting center and connected with a radial supporting leg angle fixing plate by virtueof a radial angle fixing bolt; an outer surface on the other side of the main measuring stick is rotationally connected with an axial supporting leg adjusting center; and the surface of the main measuring stick is positioned above the axial supporting leg adjusting center and connected with an axial supporting leg angle fixing plate by virtue of an axial angle fixing bolt. According to the measuring scale disclosed by the invention, the main measuring stick and the inner surface wall of the measured pipe are subjected to zero-error contact from the radial direction and the axial direction, sothat stable installation of the measuring scale is ensured, and the measurement accuracy of the measuring scale is increased.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of pipe fitting measurement, in particular to a precision measuring ruler for the inner diameter of a large-diameter pipe. Background technique

[0002] Large-diameter pipe fittings usually refer to pipe fittings with a diameter above DN250. Large-diameter pipe fittings mainly include large-diameter elbows, large-diameter flanges, large-diameter reducers, large-diameter official caps, etc., large-diameter pipes (such as concrete pipes, copper The control of the inner diameter of steel pipes, etc.) is related to the installation and construction of pipe fittings, and is an important control index of pipe fittings.

[0003] At present, the measuring tools used in the inspection mainly include inner micrometer and precision π ruler. Since the true diameter of the pipe diameter cannot be found when using the inner micrometer to measure, it is troublesome to find a point during the measurement process, and the ac...

Examples

Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0022] refer to Figure 1-3 , a large-diameter pipe inner diameter precision measuring ruler, including a measured pipe fitting 1 and a main ruler 4, the top of the main ruler 4 is clamped with an extension rod 3, and the top of the extension rod 3 is connected with a spring-type displacement sensor 2, and the spring The upper surface of the displacement sensor 2 and the inner surface wall of the measured pipe 1 are attached to each other, and the outer surface of one side of the main ruler 4 is rotatably connected with the radial support foot adjustment center 5, and the two sides of the radial support foot adjustment center 5 rotate symmetrically Two radial support...