How to make a centering rod for measuring

Abstract

The invention discloses a manufacturing method of a centering rod for measuring. A centering rod bottom tip, a carbon fiber tube with decimeter scales, a fixing clamp with a round level bubble, a locking system, an aluminum alloy round pipe with scales, a connector, an air pressure adjusting piston are manufactured. The centering rod bottom tip is connected with the bottom of the carbon fiber tube with the decimeter scales, the fixing clamp with the round level bubble is arranged at the upper end of the carbon fiber tube with the decimeter scales and is used for fixing the locking system, the aluminum alloy round tube with scales is inserted into the hollow carbon fiber tube with the decimeter scales by the locking system, the connector is arranged at the upper end of the aluminum alloy round tube with the scales, and the air pressure piston is arranged at the lower end of the aluminum alloy round tube with the scales. The centering rod for measuring can fast, conveniently and firmly fix an inner tube and an outer tube of the centering rod together, the inner tube can be fixed at any position and the centering rod is convenient and fast to stretch and retract.

Description

technical field [0001] The invention relates to a manufacturing method of a commonly used device in surveying and mapping engineering, in particular to a manufacturing method of a measuring centering rod capable of quickly locking the height and conveniently stretching and shrinking. Background technique [0002] At present, with the continuous development of the Global Positioning System (GPS) technology, the use of GPS receivers in the field of surveying and mapping is becoming more and more extensive. The measurement centering pole is a must for the use of GPS receivers for survey work and the use of prisms for total stations. tool. At present, the centering rod on the market is generally composed of an inner tube and an outer tube. The inner tube is installed in the outer tube, and the upper end of the outer tube is provided with a clamping device, which is used to clamp or fix the inner tube to a certain height, so as to realize Positioning of the inner tube. At prese...

AI Technical Summary

Problems solved by technology

However, when the height of the centering pole needs to be changed, this method is cumbersome and inconvenient to use

In addition, the current centering rods do not consider the influence of the two steps of pulling out and retracting the inner tube

Some use the method of adding a plastic piston at the bottom of the inner tube. When the inner tube is pulled out, it is difficult to pull out and get in due to the influence of air pressure; some do not consider the influence of air pressure at all, although the extraction is not affected. , but the top of the centering rod is often connected with measuring instruments and equipment. Once it is put in, it will fall in a manner equivalent to free fall, so that there will be a large collision between the inner tube and the bottom of the outer tube (some manufacturers place rubber balls at the bottom) To achieve a certain buffer), this will have a certain impact on the equipment and even sometimes hurt the operator

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