CN202614170U

CN202614170U - Straightness measuring instrument

Info

Publication number: CN202614170U
Application number: CN 201220283987
Authority: CN
Inventors: 杨延华; 李懿; 刘兴良; 户艳; 张孝林; 杨好学
Original assignee: Xian Aeronautical University
Current assignee: Xian Aeronautical University
Priority date: 2012-06-16
Filing date: 2012-06-16
Publication date: 2012-12-19
Anticipated expiration: 2022-06-16

Abstract

The utility model discloses a straightness measuring instrument. The straightness measuring instrument comprises a first clip, a second clip, a measuring wire coil which is arranged on the first clip and a supporting frame which is arranged on the second clip, wherein a through hole is formed on the upper part of the supporting frame; the measuring wire coil comprises a base, a shell, a shaft, a coiling drum, a coiled spring and a measuring wire; the base is fixed on the first clip; the shell is arranged on the base; the shaft penetrates through the shell and is fixed on the shell; the coiled spring is sleeved on the shaft; the coiling drum is sleeved on the coiled spring; one end of the coiled spring is fixed on the shaft, and the other end of the coiled spring is fixed on the coiling drum; the measuring wire is wound on the coiling drum; one end of the measuring wire is led out of the shell and passes through the through hole; and the lead-out end of the measuring wire is connected with a wire pendant. The straightness measuring instrument has a simple structure and is reasonably designed and convenient to use and operate; and measuring operation can be finished by only one person, so that labor is reduced.

Description

Straightness measuring instrument

Technical field

The utility model relates to a kind of measurement apparatus, especially relates to a kind of straightness measuring instrument that steel pipe is directly spent that is used to measure.

Background technology

When steel pipe's production, API 5L standard code: specification should have suitable straight degree less than the steel pipe of A25, A level and the B level of 4-1/2.In the prior art, the casual inspection mode is all adopted in the detection that all steel pipes are directly spent, and requires straight line depart from and surpasses 0.2% of steel pipe length.Adopt the cord of a tension or the other end that the end of tinsel along the steel pipe side surface from steel pipe is pulled to steel pipe during measurement, measure the cord of tension or the ultimate range of tinsel to steel pipe side surface then.Measuring the straight degree of steel pipe now mainly is that manual work is measured, and strains cord or tinsel at the pipe end two ends by two people, and the 3rd people measures maximum deviation between cord or the tinsel and the steel pipe of tension.This metering system needs labor intensive more, under the situation that personnel lack, can't accomplish.

The utility model content

The purpose of the utility model is to overcome above-mentioned deficiency of the prior art, and a kind of straightness measuring instrument is provided, and it is simple in structure, reasonable in design and use easy to operately, as long as a people just can accomplish surveying work, has reduced manpower.

For realizing above-mentioned purpose, the technical scheme that the utility model adopts is: a kind of straightness measuring instrument is characterized in that: comprise first clamp and second clamp, and be installed in the measurement coil of wire on the first clamp and be installed in the bracing frame on the second clamp; The top of support frame as described above has through hole, and said slotted line volume comprises base, housing, axle, winding roll, wind spring and slotted line, and said base is fixed on the first clamp; Said housing is installed on the base; Said axle passes housing and is fixed on the housing, and said wind spring is enclosed within on the axle, and said winding roll is enclosed within on the wind spring; One end of said wind spring is fixed on the axle, and the other end of said wind spring is fixed on the winding roll; Said slotted line is wrapped on the winding roll, and a wherein end of said slotted line is drawn housing and passed through hole, and the exit of said slotted line connects wired bob.

Above-mentioned straightness measuring instrument is characterized in that: said both sides of going up and being positioned at winding roll all are equipped with the spiral disk cover.

Above-mentioned straightness measuring instrument is characterized in that: said line weighs down is shaped as annular.

Above-mentioned straightness measuring instrument is characterized in that: said slotted line is tinsel or plastic cord.

Above-mentioned straightness measuring instrument is characterized in that: support frame as described above be shaped as inverted T-shape, support frame as described above is fixed on the second clamp.

The utility model compared with prior art has the following advantages:

1, simple in structure, reasonable in design and to make use cost low.

2, use is easy to operate, as long as a people just can accomplish surveying work, has reduced manpower.

Through accompanying drawing and embodiment, the utility model is done further detailed description below.

Description of drawings

Fig. 1 is the one-piece construction synoptic diagram of the utility model.

Description of reference numerals:

1-first clamp; 2-second clamp; 3-bracing frame;

4-base; 5-housing; 6-slotted line;

7-axle; 8-spiral disk cover; 9-wind spring;

10-line weighs down; 11-through hole; 12-winding roll.

Embodiment

As shown in Figure 1, the utility model comprises first clamp 1 and second clamp 2, and is installed in the measurement coil of wire on the first clamp 1 and is installed in the bracing frame 3 on the second clamp 2; The top of support frame as described above 3 has through hole 11, and said slotted line volume comprises base 4, housing 5, axle 7, winding roll 12, wind spring 9 and slotted line 6, and said base 4 is fixed on the first clamp 1; Said housing 5 is installed on the base 4; Said axle 7 passes housing 5 and is fixed on the housing 5, and said wind spring 9 is enclosed within on the axle 7, and said winding roll 12 is enclosed within on the wind spring 9; One end of said wind spring 9 is fixed on the axle 7, and the other end of said wind spring 9 is fixed on the winding roll 12; Said slotted line 6 is wrapped on the winding roll 12, and a wherein end of said slotted line 6 is drawn housing 5 and passed through hole 11, and the exit of said slotted line 6 connects wired bob 10.

As shown in Figure 1, in the present embodiment, on the said the axle 7 and both sides that are positioned at winding roll 12 all are equipped with spiral disk cover 8, and the setting of winding roll 12 is in order to prevent that slotted line 6 is under landing on the winding roll.

As shown in Figure 1, in the present embodiment, said line weighs down 10 the annular that is shaped as.

In the present embodiment, said slotted line 6 is tinsel or plastic cord.

As shown in Figure 1, in the present embodiment, support frame as described above 3 be shaped as inverted T-shape, support frame as described above 3 is fixed on the second clamp 2.

During use; First clamp 1 is clipped in an end of steel pipe to be measured; Second clamp 2 is clipped in the other end of steel pipe to be measured, supports the slotted line 6 that from winding roll 12, wins over by bracing frame 3, and it is tension when measuring that line bob 10 can make slotted line 6; Tension when wind spring 9 can make slotted line 6 use, the time spent does not regain rapidly.Because slotted line 6 and the distance between the base 4 of tension are fixed values,, just can be easy to calculate the straight degree deviation value of steel pipe to be measured as long as measure the distance of slotted line 6 and steel tube surface to be measured when therefore measuring.

The above; It only is the preferred embodiment of the utility model; Be not that the utility model is done any restriction; Every according to the utility model technical spirit to any simple modification, change and equivalent structure transformation that above embodiment did, all still belong in the protection domain of the utility model technical scheme.

Claims

1. a straightness measuring instrument is characterized in that: comprise first clamp (1) and second clamp (2), and be installed in the measurement coil of wire on the first clamp (1) and be installed in the bracing frame (3) on the second clamp (2); The top of support frame as described above (3) has through hole (11); Said slotted line volume comprises base (4), housing (5), axle (7), winding roll (12), wind spring (9) and slotted line (6); Said base (4) is fixed on the first clamp (1), and said housing (5) is installed on the base (4), and said axle (7) passes housing (5) and is fixed on the housing (5); Said wind spring (9) is enclosed within on the axle (7); Said winding roll (12) is enclosed within on the wind spring (9), and an end of said wind spring (9) is fixed on the axle (7), and the other end of said wind spring (9) is fixed on the winding roll (12); Said slotted line (6) is wrapped on the winding roll (12), and a wherein end of said slotted line (6) is drawn housing (5) and passed through hole (11), and the exit of said slotted line (6) connects wired bob (10).

2. according to the described straightness measuring instrument of claim 1, it is characterized in that: said axle (7) is gone up and the both sides that are positioned at winding roll (12) all are equipped with spiral disk cover (8).

3. according to claim 1 or 2 described straightness measuring instruments, it is characterized in that: said line weighs down the annular that is shaped as of (10).

4. according to claim 1 or 2 described straightness measuring instruments, it is characterized in that: said slotted line (6) is tinsel or plastic cord.

5. according to claim 1 or 2 described straightness measuring instruments, it is characterized in that: support frame as described above (3) be shaped as inverted T-shape, support frame as described above (3) is fixed on the second clamp (2).