Curve measuring instrument

Abstract

The utility model provides a curve measuring instrument and relates to the technical field of measurement. The curve measuring instrument comprises a long-arm handle, a long rotating arm, a distance measurement disc, a dial disc, a pointer sleeve, round jackscrew nuts, a pointer, a short rotating arm, a rotating shaft, gaskets and a long and short rotating arm supporting cross beam. The curve measuring instrument is characterized in that the long rotating arm is connected with the short rotating arm through the long and short rotating arm supporting cross beam, and the long rotating arm, the long and short rotating arm supporting cross beam and the short rotating arm are connected to form an 'h' shape. The dial disc is arranged on the outer edge of one side of the distance measurement disc. The rotating shaft perpendicular to the round face of the distance measurement disc is installed at the centers of the long rotating arm and the distance measurement disc. One end of the rotating shaft is fixed on the long rotating arm through the gasket and the round jackscrew nut, and the pointer sleeve is sleeved at the other end of the rotating shaft and is fixed on the short rotating arm through the gasket and the round jackscrew nut. One end of the pointer is connected with pointer sleeve. The distance measurement disc is made of an abrasion-resisting hard rubber and plastic material. The curve measuring instrument has the advantages of being small in size and convenient to carry and use.

Description

technical field [0001] The curve measuring instrument relates to the field of measurement technology. Background technique [0002] In actual measurement, it is mostly a photoelectric length measuring instrument, such as drainage ditches, ramps and detours. However, laser measurement can only measure the distance between two points, and it is difficult to measure the length of any curve. The remaining box rulers and tapes have limited lengths, and the length of the curve is limited by the stretching of the tape during measurement, so it is also difficult to accurately measure the length of any curve. It is not convenient for field operation. The prior art of the roller type curve measuring instrument, such as Chinese patent CN202420437U, is a three-wheel sliding vehicle, and the device is complicated and bulky, and it is inconvenient to carry and use. Contents of the invention [0003] In view of the deficiencies in the existing technology, for example, when measuring t...

AI Technical Summary

Problems solved by technology

The length of other box rulers and tapes is limited, and the length of the curve is limited by the stretching of the tape when measuring, and it is difficult to accurately measure the length of any curve

Not easy to operate in the field

The existing technology of the roller type curve measuring instrument, such as the Chinese patent CN202420437U, is a three-wheel sliding vehicle, and the device is complicated and bulky, and it is inconvenient to carry and use.

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