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Round manhole end socket scribing method

A head and hole line technology, which is applied in the field of round manhole head marking, can solve the problems of complicated operation and low precision of round manholes, and achieve the effect of accurate marking and convenient operation

Inactive Publication Date: 2015-05-20
QINGDAO XUSHENG HEAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the marking method of circular manhole head is complicated to operate and has low accuracy.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0017] a. Mark the height line of the head: take the inner circle of the head as the benchmark, draw the height line from the inner surface with a powder line, a steel ruler, and a compasses, and lead it to the outer surface of the head;

[0018] b. Drawing the head manhole line: After the height line is drawn, divide it into four equal parts according to the arc length of the circle, draw the cross line to intersect the center of the head, and then draw the manhole gas secant line;

[0019] c. Marking the axial or radial or perpendicular to the axial horizontal gauge tubes, semi-balanced container tube holes and other small tube holes on the head: after the annular groove of the head is processed, redraw based on the end face The four-phase line of the head, and set out on the platform, lead the small pipe hole line to the head, and mark the phase line and pipe hole;

[0020] d. Draw the manhole, drop pipe hole, water supply pipe hole and other pipe hole lines that form a cer...

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PUM

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Abstract

The invention discloses a round manhole end socket scribing method. The round manhole end socket scribing method includes the operating steps of scribing the altitude line of an end socket, scribing the line of a manhole of the end socket, scribing the lines of a horizontal gauge tube, a balance container tube hole and other small tube holes in the axial or radial direction of the end socket or perpendicular to the axial direction, and scribing the lines of the manhole, a descending tube hole, a water feeding tube hole and other tube holes, wherein certain angles are formed between the centerline of the end socket and the manhole, the descending tube hole, the water feeding tube hole and the other tube holes. Neither platform nor scribing block is needed for scribing the altitude line of the end socket, only simple scribing tools such as chalk lines, steel rulers and compasses are needed, operation is convenient, and scribing is accurate.

Description

[0001] technical field [0002] The invention belongs to a head marking method, in particular to a method for marking a circular manhole head. [0003] Background technique [0004] At present, the marking method of circular manhole head is complicated to operate and has low precision. [0005] Contents of the invention [0006] In order to overcome the above-mentioned defects in the prior art, the object of the present invention is to provide a method for marking a round manhole head, which is easy to operate. [0007] The method for marking the circular manhole head provided by the present invention has the following steps: [0008] a. Mark the height line of the head: take the inner circle of the head as the benchmark, draw the height line from the inner surface with a powder line, a steel ruler, and a compasses, and lead it to the outer surface of the head; [0009] b. Drawing the head manhole line: After the height line is drawn, divide it into four equal parts a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25H7/00B25H7/04
CPCB25H7/04
Inventor 杜学梅
Owner QINGDAO XUSHENG HEAD
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