CN202255220U

CN202255220U - Snap gauge for pipe end of steel pipe

Info

Publication number: CN202255220U
Application number: CN2011202567704U
Authority: CN
Inventors: 齐林山
Original assignee: TIANJIN HAIHAO PETROLEUM MACHINERY MANUFACTURING CO LTD
Current assignee: TIANJIN HAIHAO PETROLEUM MACHINERY MANUFACTURING CO LTD
Priority date: 2011-07-20
Filing date: 2011-07-20
Publication date: 2012-05-30
Anticipated expiration: 2021-07-20

Abstract

The utility model discloses a snap gauge for a pipe end of a steel pipe. The snap gauge comprises a handle, a gauge body, standard upper limit scales, standard nominal value scales and standard lower limit scales, wherein the gauge body is a concave shape, wherein the shapes of the two sides of the concave shape are symmetrical; a cambered measurement plane is arranged on the inner surface of each of the two sides of the gauge body; the rear middle part of the gauge body is in threaded connection with the hollow circular handle; the measurement plane has an axial inclined angle of 10 DEG; and the standard upper limit scales, the standard nominal value scales and the standard lower limit scales are sequentially arranged on the measurement planes. The snap gauge for the pipe end of the steel pipe has the beneficial effects that when the snap gauge for the pipe end of the steel pipe is used, the external diameter of the steel pipe can be quickly measured whether to be qualified or not without reading, both a superstandard maximum steel pipe external diameter and a superstandard minimum steel pipe external diameter can be measured, the measurement reliability and the working efficiency are improved, and the snap gauge is convenient to use on line and quickly; moreover, the handle of the snap gauge is away from a pipe body, so that the snap gauge is more convenient to operate.

Description

A kind of pipe end outside calipers

Technical field

The utility model belongs to a kind of field of tool of measuring the steel tube end part diameter, especially relates to a kind of pipe end outside calipers.

Background technology

In existing technology, prepare to require the reviewer to judge fast whether the tube product external diameter is qualified before the warehouse-in at a large amount of steel pipes of producing; And do not need to measure one by one concrete numerical value; But what existing measurement outer diameter of steel pipes used is that vernier caliper measurement goes out concrete numerical value; Compare with standard-required again, judge whether satisfy standard-required.Exist this measurement can only measure the several points on the pipe end circumference, can not carry out the measurement on the whole circumference, can not guarantee control fully the steel pipe's production quality, and technical matters such as inefficiency.

Summary of the invention

The problem that the utility model will solve provides a kind of pipe end outside calipers, is particluarly suitable for line and measures pipe end external diameter problem fast, improves precision and work efficiency simultaneously.

For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: a kind of pipe end outside calipers; The lower limit scale that comprises handle, the upper limit scale of advising body, standard, standard nominal value scale, standard; The rule body is the spill of two side portions shape symmetry; Both sides inside surface at the rule body is provided with curved measurement face, in order to alleviate the weight of these rule, at the back middle part of said rule body through the open circles handle that has been threaded; Described measurement face is axially having certain gradient; The gradient of said measurement face is 10 ° of pitch angle, on said measurement face, is provided with upper limit scale, the standard nominal value scale of standard, three scale marks of lower limit scale of standard successively, and the distance between the lower limit scale mark of standard and the standard nominal value scale mark equals standard nominal value and standard value; Distance between the upper limit scale mark of standard nominal value scale mark and standard equals the maximal value of standard-required and the upper limit of standard, and the distance between the inner end of the lower limit scale mark of standard and described measurement face equals the lower limit of the minimum value and the standard of standard-required.

Advantage and the good effect that the utlity model has are: owing to adopt technique scheme, whether qualified, not only can measure overproof maximal value outer diameter of steel pipes if when using the pipe end outside calipers, not needing reading just can measure outer diameter of steel pipes fast; Also can measure overproof minimum value outer diameter of steel pipes; Improve measuring reliability, be convenient to online quick use, increase work efficiency; And this outside calipers handle is more convenient to operate away from body.

Description of drawings

Fig. 1 is the pipe end outside calipers front view of the utility model

Fig. 2 is a pipe end outside calipers side view

Fig. 3 is the partial enlarged drawing of A among Fig. 1

Among the figure:

1, the scale that rolls off the production line of handle 2, rule body 3, standard

4, upper limit scale 6, the measurement face of standard nominal value scale 5, standard

Embodiment

Like Fig. 1,2, shown in 3; A kind of pipe end outside calipers of the utility model; Comprise handle 1, rule body 2, the upper limit scale 3 of standard, standard nominal value scale 4, the scale 5 that rolls off the production line of standard, measurement face 6; Rule body 2 is the spill of both sides shape symmetry; Both sides inside surface at rule body 2 is provided with curved measurement face 6, in order to alleviate the weight of these rule, at the back middle part of said rule body through the open circles handle 1 that is threaded; Described measurement face 6 is axially having certain gradient; The gradient of described measurement face 6 is 10 °, on said measurement face 6, is provided with upper limit scale 5, the standard nominal value scale 4 of standard, 3 three scale marks of lower limit scale of standard successively, and the distance between the lower limit scale mark 3 of standard and the standard nominal value scale mark 4 equals standard nominal value and standard value; Distance between the upper limit scale 5 of standard nominal value scale mark 4 and standard equals the maximal value of standard-required and the upper limit of standard, and the distance between the inner end of the lower limit scale 3 of standard and described measurement face equals the lower limit of the minimum value and the standard of standard-required.

The course of work of this instance: when using the pipe end outside calipers, hold round shaft 1 along steel shaft to blocking the tested position of pipe end, when steel pipe is stuck in these rule body standard min scale mark below 3, the overproof lower limit of steel pipe is described then; Be judged to outer diameter of steel pipes and do not meet standard,, but surpassed the lower limit scale 3 of standard if pipe end does not reach standard nominal value scale 4; Explain that outer diameter of steel pipes is less than normal, but in critical field, judge that steel pipe meets the requirements; If steel pipe does not reach standard max scale 5, but surpassed standard nominal scale 4, explained that outer diameter of steel pipes is bigger than normal; But within standard, then judge the steel pipe conformance with standard, if pipe end does not reach the master scale upper limit 5; Explain that then outer diameter of steel pipes is excessive, the promptly overproof upper limit judges that then outer diameter of steel pipes does not meet standard.

More than the embodiment of the utility model is specified, but said content is merely the preferred embodiment of the utility model, can not be considered to be used to limit the practical range of the utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the utility model.

Claims

1. pipe end outside calipers; It is characterized in that: the scale that rolls off the production line that comprises handle, the upper limit scale of advising body, standard, standard nominal value scale, standard; The rule body is the spill of both sides shape symmetry; Both sides inside surface at the rule body is provided with curved measurement face; The middle part is through the round shaft that is threaded behind described rule body, and described measurement face is axially having constant slope, is provided with upper limit scale, the standard nominal value scale of standard, three scale marks of lower limit scale of standard successively at said measurement face ecto-entad.

2. pipe end outside calipers according to claim 1 is characterized in that: said handle is a hollow circular-tube.

3. pipe end outside calipers according to claim 1 is characterized in that: the gradient of said measurement face is 10 ° of pitch angle.