CN201110752Y

CN201110752Y - Steel tube end inside gauge

Info

Publication number: CN201110752Y
Application number: CNU2007200983291U
Authority: CN
Inventors: 段英才; 李强; 张惠萍
Original assignee: Tianjin Pipe Group Corp
Current assignee: Tianjin Pipe Group Corp
Priority date: 2007-12-06
Filing date: 2007-12-06
Publication date: 2008-09-03
Anticipated expiration: 2017-12-06

Abstract

The utility model provides a pipe end bore gauge of steel pipes, which comprises a concave gauge body with bilateral portions having symmetrical shapes, external surfaces of bilateral portions of the gauge body are provided with a curved plane of measurement, a hollow circular handle is arranged in the back of the gauge body by screw threads, the plane of measurement axially has certain grade of slope which is an inclination of 5 degrees to 10 degrees, a standard upper graduation line, a standard nominal value graduation line and a standard lower limit graduation line are sequentially disposed on the plane of measurement. The pipe end bore gauge of steel pipes has the advantages that the pipe end bore gauge of steel pipes can quickly detect whether a steel pipe bore diameter is eligible or not without reading number when used, does not need separating detecting parts and is convenient for quick usage of on-line measurement, further the handle of the bore gauge is away from pipe bodies, thereby greatly reducing possibility of injuring operators. The bore gauge can not only measure a bore diameter of a steel pipe with above normal standard maximum value, but measure a bore diameter of a steel pipe with above normal standard minimum value and improve measuring reliability.

Description

The pipe end inside calliper

Technical field

The utility model relates to a kind of measurer of measuring the steel tube end part diameter, particularly a kind of pipe end pipe end inside calliper that is applicable to online quick measurement steel pipe.

Background technology

On extensive, at a high speed pipe production line, require whether conformance with standard of the online quick judgement tube product internal diameter of reviewer, and do not need to measure one by one concrete numerical value.But what existing measurement pipe end internal diameter used is that dial bore gage rule or vernier caliper measurement go out concrete numerical value, compares with standard-required, judges whether satisfy standard-required again.This metering system is longer measuring period, can not satisfy the requirement of existing quick rhythm of production.This in addition measuring method can only be measured the several points on the pipe end circumference, can not carry out the measurement on the whole circumference, can't solve fast on-line measurement pipe end internal diameter, can not guarantee the control fully to the steel pipe's production quality.

Summary of the invention

For solving the technical matters of fast on-line measurement pipe end internal diameter, the purpose of this utility model provides the logical no-go gage of a kind of pipe end internal diameter, is beneficial to solve the online quick measurement internal diameter problem of pipe end, improves the precision of measuring simultaneously.

For achieving the above object, the technical solution adopted in the utility model provides a kind of pipe end inside calliper, wherein: these rule include the rule body that is female shapes of two side portions shape symmetry, the outside surface of two side portions at rule body 2 is provided with curved measurement face, at the back middle part of described rule body by the open circles handle that has been threaded.Described measurement face has certain gradient in the axial direction, and the gradient of described measurement face is 5 ° of-10 ° of pitch angle.Be provided with upper limit scale mark, the standard nominal value scale mark of standard, three scale marks of lower limit scale mark of standard on described measurement face successively, the maximal value that the distance between the upper limit scale mark of standard and the standard nominal value scale mark equals standard-required is the upper limit of standard; It is standard value that distance between the lower limit scale mark of standard nominal value scale mark and standard equals the standard nominal value; The minimum value that distance between the lower limit scale mark of standard and the described measurement face port equals standard-required is the lower limit of standard.

Whether effect of the present utility model is that this pipe end inside calliper does not need reading just can measure pipe diameter apace in use qualified, do not need measured piece is separated, and is convenient to on-line measurement and fast uses.And this inside calliper handle is away from body, and the possibility that operating personnel are damaged reduces greatly.This inside calliper can not only be measured overproof peaked pipe diameter, and can measure the pipe diameter of overproof minimum value, has improved the measurement reliability.

Description of drawings

Fig. 1 is a pipe end inside calliper front view of the present utility model;

Fig. 2 is a pipe end inside calliper side view of the present utility model.

Among the figure:

1, the upper limit scale of handle 2, rule body 3, standard

4, the lower limit scale of standard nominal value scale 5, standard

Embodiment

Reaching embodiment in conjunction with the accompanying drawings is illustrated pipe end inside calliper structure of the present utility model.

As shown in Figure 1, 2, pipe end inside calliper structure of the present utility model is, these rule include the rule body 2 that is female shapes of two side portions shape symmetry, the outside surface of two side portions at rule body 2 is provided with curved measurement face, at the back middle part of described rule body 2 by the open circles handle 1 that has been threaded.Why be made as hollow handle, its objective is that the handled easily personnel use in order to alleviate the weight of these rule.Described measurement face has certain gradient in the axial direction, and the gradient of described measurement face is 5 ° of-10 ° of pitch angle.Be provided with upper limit scale mark 3, the standard nominal value scale mark 4 of standard, 5 three scale marks of lower limit scale mark of standard on described measurement face successively, the maximal value that the distance between the upper limit scale mark 3 of standard and the standard nominal value scale mark 4 equals standard-required is the upper limit of standard; It is standard value that distance between the lower limit scale mark 5 of standard nominal value scale mark 4 and standard equals the standard nominal value.The minimum value that distance between the lower limit scale mark 5 of standard and the described measurement face port equals standard-required is the lower limit of standard.Distance between the measurement face of the utilization scale is measured judgement to the pipe end internal diameter rapidly and exactly.

When pipe end inside calliper of the present utility model uses, hold round shaft 1, along steel shaft to the tested position of contact pipe end, when these rule body can not pass through pipe end, if pipe end does not reach scale mark 5, the overproof lower limit of pipe diameter is described, judge that then internal diameter does not meet standard; If pipe end does not reach scale mark 4, but surpass scale mark 5, illustrated that pipe diameter is less than normal, but in critical field, then judged the internal diameter conformance with standard; If pipe end does not reach scale mark 3, but surpass scale mark 4, illustrated that pipe diameter is bigger than normal, but in critical field, then judged the internal diameter conformance with standard; If pipe end surpasses scale mark 3, illustrate that pipe diameter is excessive, the promptly overproof upper limit judges that then internal diameter does not meet standard.

Claims

1, a kind of pipe end inside calliper, it is characterized in that: these rule include the rule body (2) that is female shapes of two side portions shape symmetry, outside surface in the two side portions of advising bodies (2) is provided with curved measurement face, described measurement face has certain gradient in the axial direction, be provided with upper limit scale mark (3), the standard nominal value scale mark (4) of standard, (5) three scale marks of lower limit scale mark of standard on described measurement face successively, the upper limit scale mark (3) of standard and the distance between the standard nominal value scale mark (4) equal the upper limit of standard; Distance between the lower limit scale mark (5) of standard nominal value scale mark (4) and standard equals the standard nominal value; The lower limit scale mark (5) of standard and the distance between the described measurement face port equal the lower limit of standard; Be connected with a round shaft (1) at the back middle part of described rule body (2).

2, according to the described pipe end inside calliper of claim 1, it is characterized in that: the gradient of described measurement face is 5 ° of-10 ° of pitch angle.

3, pipe end inside calliper according to claim 1 is characterized in that: described handle (1) is the open circles handle.