CN201373731Y - Gradient-cutting automatic measuring instrument at end of steel pipe - Google Patents
Gradient-cutting automatic measuring instrument at end of steel pipe Download PDFInfo
- Publication number
- CN201373731Y CN201373731Y CN200920106190U CN200920106190U CN201373731Y CN 201373731 Y CN201373731 Y CN 201373731Y CN 200920106190 U CN200920106190 U CN 200920106190U CN 200920106190 U CN200920106190 U CN 200920106190U CN 201373731 Y CN201373731 Y CN 201373731Y
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- China
- Prior art keywords
- measuring
- steel pipe
- gradient
- slide block
- measuring instrument
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- Expired - Lifetime
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Abstract
The utility model relates to a gradient-cutting automatic measuring instrument at the end of a steel pipe, which consists of two parts, namely a measuring device and a signal output device; two measuring probes are respectively connected with one end of two rigid springs; the measuring probes take the shape of a wedge and have smooth finish; the rigid springs have stiffness, wherein the other end of the two rigid springs is respectively fixed on a fixed rod of a bracket through pins, with the spacing equal to the diameter of the steel pipe. One end of two guide rails is respectively fixed on the fixed rod of the bracket through the pins for fixing the rig springs; a limit pin and a slide block are respectively arranged on the two guide rails; and the slide block and the measuring probes on the two guide rails are respectively connected by two driving slide rods which are respectively connected with two signal converters, wherein the signal converters are connected with a PC terminal through a data line. The measuring instrument solves the problem of inaccurate gradient cut when a conventional square is used to coordinate with a feeler gauge to measure the end surface of the steel pipe by hand. The measuring instrument also is characterized by accurate measurement, high efficiency, convenience, wide suitability and durability.
Description
Technical field
The utility model relates to a kind of end surface measurement technology, and particularly the steel pipe end face is cut the measurement of oblique parameter, is that a kind of steel pipe end face is cut oblique automatic measuring instrument.
Background technology
Be controlled in certain scope for making things convenient for the pipeline scene to lay pipe end should to be cut gradient, APISPEC 5L " pipeline steel tube standard " and each pipework technical conditions are cut gradient to the pipe end of steel pipe all strict regulation, therefore requires that in tube mill every steel pipe is carried out strictness and detects.Present domestic steel pipe's production producer generally adopts try square and clearance gauge, comes measuring tube end-grain cutting bevel cun by artificial method.In theory, pipe end is a face, has a lot of different oblique size values of cutting from different tube end diameter orientation measurements, judges that a pipe end cuts tiltedly whether qualifiedly, should measure its maximal value.But measure a value and can not determine that again pipe end cuts tiltedly whether qualifiedly, common way is: measure two values (twice measuring position should differ 90 °), ask the mean value of two measured values, be designated as mean value 1; And then use the same method and record two in different positions and cut oblique value, and ask its mean value, be designated as mean value 2.Relatively mean value 1 and mean value 2 select for use the higher limit of bigger mean value and standard code to compare, if mean value is lower than standard code, it is qualified then to declare; If exceeding the master gauge rule declares useless.Therefore, adopt the method measuring tube end-grain cutting gradient, inefficiency, and measurement point can not cover points all on the pipe end circumference, and measurement result is not representative.In addition, when the pipe end of factory's measurement spirally welded pipe is cut gradient, because the influence of pipe end hole enlargement and spiral weld can't be found the measuring basis face, thereby adopt the most original method of hanging down of hanging to measure, its drawback is accuracy, the inefficiency that can't guarantee measurement result.Therefore, this method measurement of steel pipe batch process check employing is infeasible.
The utility model content
The purpose of this utility model is to provide a kind of pipe end to cut the gradient automatic measuring instrument, solves the accurate problems of measurement that pipe end is cut gradient.This survey instrument is used for the detection that the cylindrical pressure vessel end face is cut gradient, also has favorable application and effect.
Pipe end described in the utility model is cut the gradient automatic measuring instrument and is made up of measurement mechanism and signal output apparatus two parts, the measurement mechanism horizontal positioned is made up of measuring sonde, hard spring, transmission slide bar, pin, support, spacer pin, slide block, guide rail; Signal output apparatus is made up of signal converter, data line and PC terminal.
Two measuring sondes are connected with an end of two hard springs respectively, measuring sonde is a wedge shape, has smooth finish, the hard spring has rigidity, the other end of two hard springs is separately fixed on the fixed bar of support by pin, spacing is identical with diameter of steel tube, two guide rail one ends are separately fixed on the fixed bar of support by the fixing pin of hard spring, on two guide rails spacer pin and slide block are set respectively, connect two slide block and measuring sondes on the guide rail respectively by two transmission slide bars, two transmission slide bars connect two signal converters respectively, and two signal converters are connected with the PC terminal by data line respectively.
By adjusting the pin position adjustment vertical range of measuring sonde up and down, the spacing of two probes is identical with diameter of steel tube about adjusting.
Two measuring sondes closely contact with pipe end up and down, and guarantee to pop one's head in up and down to realize pipe end is cut the synchro measure of gradient with the rotation of steel pipe.
Steel pipe is placed on the objective table that has a four rolling, guarantee objective table level as far as possible, four rolling is distributed in the both sides at steel pipe two ends, and 4 rollers rotate counterclockwise synchronously, rotational line speed is between 0.01-0.02m/s, to guarantee the slow rotation in steel pipe original place.
With moving of steel pipe, because producing corresponding compression deformation meeting on the hard spring, the variation of end surface inclination drives the transmission slide bar generation horizontal shift variation that is connected on the probe, the transmission slide bar has certain rigidity.The change in location of transmission slide bar drives the slide block that is placed on the guide rail and produces horizontal reciprocating movement, and the right side of slide block has a spacer pin identical with the reference position of slide block about adjusting.Guide rail is connected with rack mechanical, and certain rigidity is arranged, and there is good smooth finish on the surface, guarantees that slide block can free movement.
The synchronous shift signal that signal converter about being connected on the slide block will collect slide block changes into synchronous electric signal, and signal imports the PC terminal by data line.
The PC terminal is analyzed the electric signal that imports into: synchronization, the displacement of top shoe are d
1t, the displacement of sliding block is d
2t, calculate the synchronization displacement difference Δ dt=|d of slide block up and down
1t-d
2t|, Δ dt be this moment steel pipe end face a certain measuring position cut oblique value.The different moment obtain different steel pipe endface position and cut oblique measured value, select maximal value-Δ dtmax in numerous Δ dt, promptly are that the pipe end of this steel pipe is cut gradient.In PC terminal analysis system, set the pipe end of a standard code and cut oblique higher limit, in measuring process,, then to report to the police immediately if measured value exceeds standard, measuring process stops immediately, and this steel pipe can be declared useless.
Calibration before measuring: prepare a standard specimen pipe that caliber is less, and it is less that the pipe end of this standard specimen pipe is cut gradient, use traditional manual measurement method then, for example, try square cooperates the clearance gauge mensuration or hangs vertical mensuration, the several random sites of steel pipe end face are measured its pipe end cut gradient, and the maximal value of record measured value.Then, utilize pipe end to cut the gradient automatic measuring instrument, the standard specimen pipe tube end position that manual method was measured carries out pipe end and cuts gradient and measure, cut the initial position that oblique value is adjusted spacer pin with reference to the pipe end that manual method is measured, twice measured value is identical before and after making, reaches with this pipe end is cut the purpose that the gradient automatic measuring instrument is calibrated.
The steel pipe end face is cut oblique automatic measuring instrument, energy measurement steel pipe end face or cylindrical vessel end face cut gradient and direct reading measurement data.Solved well and used conventional try square to cooperate clearance gauge hand dipping steel pipe end face to cut the inaccurate problem of gradient, and have measure accurately, efficient, convenient, wide, the durable feature of applicability.
Description of drawings
Fig. 1 pipe end is cut gradient automatic measuring instrument structural representation.
Wherein: 1-measuring sonde, 2-hard spring, 3-transmission slide bar, 4-pin, 5-support, 6-spacer pin, 7-slide block, 8-guide rail, 9-signal converter, 10-data line, 11-PC machine terminal
Embodiment
With reference to the accompanying drawings pipe end described in the utility model being cut gradient automatic measuring instrument structure below is illustrated.
Pipe end described in the utility model is cut the gradient automatic measuring instrument and is made up of measurement mechanism and signal output apparatus two parts, the measurement mechanism horizontal positioned, measuring sonde 1, hard spring 2, transmission slide bar 3, pin 4, support 5, spacer pin 6, slide block 7, guide rail 8 are formed; Signal output apparatus is made up of signal converter 9, data line 10 and PC terminal 11.
Two measuring sondes 1 are connected with an end of two hard springs 2 respectively, measuring sonde 2 is a wedge shape, has smooth finish, hard spring 2 has rigidity, the other end of two hard springs 2 is separately fixed on the fixed bar of support 5 by pin 4, spacing is identical with diameter of steel tube, two guide rail one ends are separately fixed on the fixed bar of support 5 by the fixing pin 4 of hard spring 2, spacer pin 6 and slide block 7 are set respectively on two guide rails 8, connect two slide block 7 and measuring sondes 1 on the guide rail 8 respectively by two transmission slide bars 3, two transmission slide bars 3 connect 9, two signal converters of two signal converters 9 respectively and are connected with PC terminal 11 by data line 10.
Claims (1)
1. a pipe end is cut the gradient automatic measuring instrument, form by measurement mechanism and signal output apparatus two parts, and the measurement mechanism horizontal positioned, measuring sonde, hard spring, transmission slide bar, pin, support, spacer pin, slide block, guide rail are formed; Signal output apparatus is made up of signal converter, data line and PC terminal, it is characterized in that:
Two measuring sondes are connected with an end of two hard springs respectively, measuring sonde is a wedge shape, has smooth finish, the hard spring has rigidity, the other end of two hard springs is separately fixed on the fixed bar of support by pin, spacing is identical with diameter of steel tube, two guide rail one ends are separately fixed on the fixed bar of support by the fixing pin of hard spring, on two guide rails spacer pin and slide block are set respectively, connect two slide block and measuring sondes on the guide rail respectively by two transmission slide bars, two transmission slide bars connect two signal converters respectively, and two signal converters are connected with the PC terminal by data line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920106190U CN201373731Y (en) | 2009-03-13 | 2009-03-13 | Gradient-cutting automatic measuring instrument at end of steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920106190U CN201373731Y (en) | 2009-03-13 | 2009-03-13 | Gradient-cutting automatic measuring instrument at end of steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201373731Y true CN201373731Y (en) | 2009-12-30 |
Family
ID=41499816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920106190U Expired - Lifetime CN201373731Y (en) | 2009-03-13 | 2009-03-13 | Gradient-cutting automatic measuring instrument at end of steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201373731Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197357A (en) * | 2016-07-21 | 2016-12-07 | 赵艳丽 | Electric power steel tube inner hole fixing device |
| CN108274138A (en) * | 2017-12-29 | 2018-07-13 | 大族激光科技产业集团股份有限公司 | A kind of the cut-out detection device and method of tubing |
| CN112284318A (en) * | 2020-10-22 | 2021-01-29 | 广州文冲船厂有限责任公司 | Pipe fitting measuring device and measuring method |
-
2009
- 2009-03-13 CN CN200920106190U patent/CN201373731Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197357A (en) * | 2016-07-21 | 2016-12-07 | 赵艳丽 | Electric power steel tube inner hole fixing device |
| CN108274138A (en) * | 2017-12-29 | 2018-07-13 | 大族激光科技产业集团股份有限公司 | A kind of the cut-out detection device and method of tubing |
| CN112284318A (en) * | 2020-10-22 | 2021-01-29 | 广州文冲船厂有限责任公司 | Pipe fitting measuring device and measuring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091230 |