Bole pitch measurement apparatus

Abstract

The invention relates to a bole pitch measurement apparatus comprising a starting end hole plug (1), a reading end hole plug (2) and a ruler (3). The apparatus is characterized in that the upper portion of the starting end hole plug (1) has a cylindrical structure; and a clamp groove is formed in the top at the radial direction. The upper portion of the reading end hole plug (2) has a semi-cone-shaped structure; and a pointer (9) is formed at the tip point of the top of the cone. Annular circular truncated cones (4) are formed at the middle portions of the starting end hole plug (1) and the reading end hole plug (2); and the lower portions have the cone-shaped structures with the large upper portions and small lower portions. One end of the ruler (3) is arranged in the ruler clamp groove (5) of the starting end hole plug (1) and the other end is placed at the annular circular truncated cone (4) of the reading end hole plug (2). According to the invention, the structure is simple; the measurement precision is high; and the application range is wide. The measurement of the hole pitch is not influenced by the subjective judgment of the measurement screw, so that the pitch measurement becomes precise, visual and objective.

Description

technical field [0001] The invention relates to the field of steel structure manufacturing and processing, more specifically it is a bolt hole distance measuring device. Background technique [0002] At present, in the construction steel structure industry, for the measurement of the distance between the drilled bolt holes on the component, a steel tape is generally used to measure the distance from the edge of the hole to the edge of another hole. This method is greatly affected by the subjective judgment of the surveyor. The measurement accuracy is low. [0003] Chinese invention patent application "A device for measuring the distance between bolt holes" (publication number: CN62679846A) discloses a device for measuring the distance between bolt holes, including two hole plugs and a ruler, which are used to directly detect the hole distance, but there is no Setting the mark corresponding to the center of the bolt hole requires human eyes to judge the position of the cente...

AI Technical Summary

Problems solved by technology

[0002] At present, in the construction steel structure industry, for the measurement of the distance between the drilled bolt holes on the component, a steel tape is generally used to measure the distance from the edge of the hole to the edge of another hole. This method is greatly affected by the subjective judgment of the surveyor. low measurement accuracy

[0003] Chinese invention patent application "A device for measuring the distance between bolt holes" (publication number: CN62679846A) discloses a device for measuring the distance between bolt holes, including two hole plugs and a ruler, which are used to directly detect the hole distance, but there is no Setting the mark corresponding to the center of the bolt hole requires human eyes to judge the position of the center of the bolt hole, resulting in large measurement errors and low measurement accuracy; in addition, the bottom of the hole plug is a cylindrical structure, which is only suitable for fixed-size The distance measurement of the bolt hole, the scope of application is small

Images