Device and method for measuring diameter of underground pipe network

Abstract

The embodiment of the invention discloses a device and method for measuring the diameter of an underground pipe network. The device for measuring the diameter of the underground pipe network comprises a fixed rod, a measuring rod and telescopic rods. The fixed rod and the measuring rod are arranged perpendicular to each other, and the measuring rod is movably arranged at the central position of the fixed rod. The telescopic rods are arranged at the two ends of the fixed rod respectively, and the lengths of the two telescopic rods are the same. One end of each telescopic rod is movably connected with the fixed rod, a contact plate is arranged at the other end of each telescopic rod, and the contact plates are used for making contact with the inner wall of the underground pipe network. According to the device for measuring the diameter of the underground pipe network, an arch height measuring method can be used for measuring the diameter of the underground pipe network or the diameter of the underground pipe network can be measured directly. Moreover, the device for measuring the diameter of the underground pipe network is simple in structure, easy to carry and capable of guaranteeing small diameter measuring errors of the underground pipe network when the inside of a pipe is complex and the movement range is small.

Description

technical field [0001] The invention relates to the technical field of underground pipelines, in particular to an underground pipeline network diameter measuring device and a measuring method thereof. Background technique [0002] The size of the pipe diameter in the underground pipe network system is directly related to the transportation capacity of the underground pipe network. During the inspection or general survey of the underground pipe network system, it is necessary to measure the pipe diameter in the underground pipe network system. Usually, when measuring the diameter of an object, it can be measured directly with a steel ruler, or with a professional diameter measuring instrument. For example, measure from any point on the circle to the opposite arc, and move on the arc to measure The maximum value of is the diameter of the circle; if the measurement accuracy requirement is very low, you can use a steel ruler for measurement, and if the accuracy requirement is hi...

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Problems solved by technology

[0005] The embodiment of the present invention provides an underground pipe network diameter measuring device and its measuring method to solve the problem that the measuring equipment in the prior art is not easy to carry, and due to the complicated internal conditions of the pipe and the small range of activities, the inner diameter of the pipe to be measured is caused by big error problem

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