CN117516394A - Device for measuring thickness of pipe by utilizing laser - Google Patents
Device for measuring thickness of pipe by utilizing laser Download PDFInfo
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- CN117516394A CN117516394A CN202410001711.4A CN202410001711A CN117516394A CN 117516394 A CN117516394 A CN 117516394A CN 202410001711 A CN202410001711 A CN 202410001711A CN 117516394 A CN117516394 A CN 117516394A
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- 230000007246 mechanism Effects 0.000 claims abstract description 110
- 238000006073 displacement reaction Methods 0.000 claims abstract description 96
- 238000013519 translation Methods 0.000 claims abstract description 35
- 238000005259 measurement Methods 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims description 10
- 230000003028 elevating effect Effects 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 description 10
- 230000033001 locomotion Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
- G01B11/12—Measuring arrangements characterised by the use of optical techniques for measuring diameters internal diameters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model relates to the field of laser measurement, and particularly discloses a device for measuring the thickness of a pipe by utilizing laser, which comprises a main body, wherein the main body comprises a translation mechanism, a lifting mechanism is arranged above the translation mechanism, a rotating mechanism is arranged above the lifting mechanism, the measuring mechanism comprises a measuring head fine-tuning mechanism and a C-shaped measuring head, the measuring head fine-tuning mechanism is connected with the rotating mechanism, the C-shaped measuring head comprises a measuring head support and a support cover plate, the measuring head support of the C-shaped measuring head is arranged on a measuring head mounting plate of the measuring head fine-tuning mechanism, a long shaft and a short shaft are arranged on the measuring head support of the C-shaped measuring head, a laser displacement sensor I and a laser displacement sensor II are arranged on the long shaft, a laser displacement sensor III and a reflecting prism are arranged on the short shaft, and the reflecting prism is positioned on a light path of the laser displacement sensor III. The utility model solves the technical problem that the existing tubular workpiece measuring tool is difficult to accurately measure the inner diameter and the outer diameter of a large tubular workpiece.
Description
Technical Field
The utility model relates to the field of laser measurement, in particular to a device for measuring the thickness of a pipe by utilizing laser.
Background
At present, non-contact laser measurement has been developed in the aspect of workpiece detection measurement, a laser transmitter emits visible red laser to the surface of a measured object through a lens, laser scattered by the surface of the object is received by an internal CCD linear camera through a receiver lens, and the CCD linear camera can observe light spots at different angles according to different distances. Based on this angle and the known distance between the laser and the camera, the digital signal processor can calculate the distance between the sensor and the object under test.
Chinese patent CN218724031U discloses a "pipe measuring device", the device comprises a device main body, a rotating mechanism and a measuring mechanism, the rotating mechanism is arranged on the device main body, the measuring mechanism is connected with the rotating mechanism, the rotating mechanism drives the measuring mechanism to rotate 360 degrees, the measuring mechanism comprises a first measuring sensor, a second measuring sensor and a clamping and fixing mechanism, the pipe is arranged in the middle of the clamping and fixing mechanism, and the pipe is fixed by the clamping and fixing mechanism; the utility model can automatically measure the pipe, has high automation degree, improves the measurement efficiency, and has more accurate measurement data, but is only suitable for measuring the pipe with small pipe diameter.
According to the principle, the laser measurement has great technical progress in measuring the inner diameter, the outer diameter and the wall thickness of the pipe, but has limitation on measuring and detecting the outer diameter, the inner diameter and the wall thickness of the large-diameter pipe parts, the size of the laser measurement instrument is generally smaller than the diameter of the large-diameter pipe, the inner diameter and the outer diameter of the large-diameter pipe parts cannot be measured at the same time, and the wall thickness of the pipe cannot be found in time when errors exist in the calculation process, so that a large-diameter measuring device for the inner diameter and the outer diameter of the large-diameter pipe workpiece laser capable of overcoming the problems is urgently needed.
Disclosure of Invention
The utility model aims to provide a device for measuring the thickness of a pipe by utilizing laser, which is used for solving the technical problem that the inner diameter and the outer diameter of a large-sized tubular workpiece are difficult to accurately measure by the existing tubular workpiece measuring tool.
The utility model is realized by the following technical scheme: the device for measuring the thickness of the pipe by utilizing the laser comprises a main body, wherein the main body comprises a translation mechanism, a lifting mechanism is arranged above the translation mechanism, a rotating mechanism is arranged above the lifting mechanism, the measuring mechanism comprises a measuring head fine-tuning mechanism and a C-shaped measuring head, the measuring head fine-tuning mechanism is connected with the rotating mechanism, the C-shaped measuring head comprises a measuring head bracket and a bracket cover plate, the measuring head bracket of the C-shaped measuring head is arranged on a measuring head mounting plate of the measuring head fine-tuning mechanism, a long shaft and a short shaft are arranged on the measuring head bracket of the C-shaped measuring head, a laser displacement sensor I and a laser displacement sensor II are arranged on the long shaft, a laser displacement sensor III and a reflecting prism are arranged on the short shaft, and the reflecting prism is positioned on a light path of the laser displacement sensor III;
when the device is used, the light path directions of the laser displacement sensor I and the laser displacement sensor II on the long shaft face the short shaft;
the light path of the laser displacement sensor III on the short axis is directed towards the long axis after passing through the reflecting prism, and coincides with the light path of the laser displacement sensor I.
The prior tubular workpiece measuring tool is difficult to accurately measure the inner diameter and the outer diameter of a large tubular workpiece, and the wall thickness of a pipe is also difficult to measure, the inner diameter and the outer diameter of the large tubular workpiece are measured by a small measuring mechanism, the wall thickness of the large tubular workpiece is calculated, the center line of the pipe to be measured is aligned with the rotation center of a rotating mechanism through a translation mechanism, a lifting mechanism and a measuring head fine-tuning mechanism, the position of a C-shaped measuring head is adjusted to be suitable for measuring the position of the pipe to be measured, the rotation of the C-shaped measuring head is controlled by the rotating mechanism to finish the measurement of the inner diameter and the outer diameter of the pipe to be measured, and the wall thickness of the pipe to be measured is calculated.
Further, the translation mechanism includes servo motor I and linear translation module I, linear translation module I includes slide and slider I, slider I is used for adjusting the position of measuring mechanism on the horizontal plane of tubular product central line extending direction that awaits measuring on the slide, can control the degree of depth that C shape measuring head stretched into tubular product that awaits measuring, the slide is installed in the slide top, linear translation module I still includes the slide rail, the slide is installed on the slide rail, the slide rail is installed on the bottom plate, the motion of slide on the slide rail is used for adjusting measuring mechanism in the position on the horizontal direction of perpendicular to tubular product central line that awaits measuring, make rotary mechanism's rotation center coincide in vertical direction with the tubular product central line that awaits measuring after the adjustment, slider I upper end in linear translation module I is provided with the loading board, still be connected through spacing chain between loading board and the slider I, spacing chain can prevent that slider I from deviating from the slide when sliding, servo motor I is connected with slider I, the motion on the slide is controlled slider I.
Further, elevating system installs on the loading board, elevating system includes jacking jar, lifting support and elevating platform, the elevating platform is installed in the lifting support top, the grating chi is installed to the elevating platform bottom, the grating chi is used for recording measuring mechanism's displacement in the horizontal direction, jacking jar and lifting support connection, the rising and the decline of control lifting support, the rising and the decline of elevating platform are controlled through the lifting support, adjustment measuring mechanism is in the ascending position of vertical direction, control rotary mechanism's rotation center and the coincidence of tubular product central line that awaits measuring in the horizontal direction.
Further, the rotating mechanism is installed at the top of the lifting support, a measuring head bottom plate is arranged between the rotating mechanism and the lifting table, a mounting frame is arranged on the measuring head bottom plate, the mounting frame is vertically installed on the measuring head bottom plate, a hollow rotating bottom plate is installed on one side of the mounting frame, a measuring head rotating plate is installed on the hollow rotating bottom plate, a communication slip ring and a servo motor II are installed on the other side of the mounting frame, the communication slip ring is located below an output shaft of the servo motor II, the communication slip ring supplies power for a laser displacement sensor in the C-shaped measuring head and transmits measuring signals in the rotating state of the C-shaped measuring head, the output shaft of the servo motor II penetrates through the mounting frame and the hollow rotating bottom plate and is connected with the measuring head rotating plate, a balancing weight is arranged at the bottom of the measuring head rotating plate, the output shaft of the servo motor II controls the measuring head rotating plate to drive the C-shaped measuring head to rotate by 360 degrees with the output shaft as a rotating center, and the balancing weight can prevent the measuring head rotating plate from unbalanced load in the rotating process.
Further, measuring head fine setting installs in measuring head rotor plate, measuring head fine setting includes straight line translation module II, servo motor III and measuring head mounting panel, straight line translation module II includes the lead screw, slide bar and slider II, slider II installs on lead screw and slide bar, measuring head mounting panel installs on slider II, servo motor III is connected with the lead screw, servo motor control lead screw is rotatory, through the rotatory adjustment measuring head mounting panel of lead screw at vertical direction removal, distance between control C shape measuring head and the rotation center, the swivel radius of adjustment C shape measuring head, adapt to the tubular product that awaits measuring of different diameters.
Further, the long shaft of the measuring head support is located at a position far away from the middle part of the measuring head rotating plate, the short shaft is located at a position close to the middle part of the measuring head rotating plate, the long shaft far end is provided with a laser displacement sensor I, the long shaft near end is provided with a laser displacement sensor II, the laser displacement sensor I and the laser displacement sensor II are used for measuring the distance between the outer wall of the pipe to be measured and the laser displacement sensor I and the laser displacement sensor II respectively, the outer diameter of the pipe to be measured can be obtained through calculation, data between the laser displacement sensor I and the laser displacement sensor II are compared, the accuracy of measured data can be verified, the short shaft near end is provided with a laser displacement sensor III, the far end is provided with a reflecting prism, the laser displacement sensor III is used for measuring the distance between the inner wall of the pipe to be measured and the laser displacement sensor III, and the inner diameter of the pipe to be measured can be obtained through calculation.
Further, the section of the reflecting prism is an isosceles right triangle, the surface of the long side of the reflecting prism is a reflecting surface, the incident angle alpha=45° between the reflecting surface and the light path of the laser displacement sensor III, the light path after reflection faces the pipe body to be detected, and finally the light path returns to the laser displacement sensor III through the reflecting surface.
Further, the opposite side of the main body is also provided with a pipe support, the top of the pipe support is provided with a V-shaped groove which is opened upwards, the V-shaped groove is internally provided with a pipe to be tested, the V-shaped groove can limit the center lines of the pipes to be tested with different diameters to coincide in the horizontal direction, and the center line of the pipe to be tested coincides with the rotation center of the rotating mechanism.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
1. according to the device for measuring the thickness of the pipe by using the laser, provided by the utility model, the rotating radius of the rotating mechanism can be adjusted through the measuring head fine adjustment mechanism, and the measurement and calculation of the inner diameter, the outer diameter and the wall thickness of the large pipe can be completed under the condition that the structure of the measuring mechanism is not changed;
2. according to the device for measuring the thickness of the pipe by using the laser, the C-shaped measuring head in the measuring mechanism can simultaneously measure the inner diameter and the outer diameter of the pipe by rotating, when the outer diameter is measured, the outer wall of the pipe to be measured can be verified to be flat by comparing the data measured by the laser displacement sensor I and the laser displacement sensor II, and the pipe to be measured is placed horizontally, so that the inner diameter and the outer diameter of the pipe to be measured are accurately measured;
3. according to the device for measuring the thickness of the pipe by using the laser, the laser displacement sensor III in the C-shaped measuring head is positioned on the short shaft and stretches into the pipe to be measured, the light path direction of the laser displacement sensor III is changed by the reflecting prism, the distance between the reflecting prism and the laser displacement sensor III exists, the inner diameter deeper can be measured, and the inner diameter is measured more accurately;
4. according to the device for measuring the thickness of the pipe by using the laser, provided by the utility model, the center line of the pipe to be measured is aligned with the rotation center of the rotating mechanism by controlling the translation mechanism, the lifting mechanism and the measuring head fine-tuning mechanism through the servo motor, the position of the C-shaped measuring head is adjusted to be suitable for measuring the position of the pipe to be measured, the adjustment process is time-saving and labor-saving, and the pipe measurement efficiency is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model. In the drawings:
FIG. 1 is a schematic diagram of a first embodiment of the present utility model;
FIG. 2 is a schematic diagram of a second embodiment of the present utility model;
FIG. 3 is a schematic diagram of the internal structure of the present utility model;
FIG. 4 is a schematic diagram of the internal structure of the second embodiment of the present utility model;
FIG. 5 is a schematic view of the structure of the C-shaped measuring head and the head trimming mechanism of the present utility model;
FIG. 6 is a schematic view of the optical path of a C-shaped measuring head of the present utility model;
FIG. 7 is an enlarged partial schematic view of the present utility model at A in FIG. 6;
FIG. 8 is a schematic diagram of the measurement principle of the present utility model;
in the drawings, the reference numerals and corresponding part names:
1-translation mechanism, 101-servo motor I, 102-linear translation module I, 1021-slide, 1022-slide I, 1023-slide, 1024-slide, 1025-base plate, 103-carrier plate, 104-limit chain, 2-lifting mechanism, 201-lifting electric cylinder, 202-lifting bracket, 203-lifting table, 204-grating ruler, 3-rotation mechanism, 301-measuring head base plate, 302-mounting bracket, 303-hollow rotation base plate, 304-communication slip ring, 305-servo motor II, 3051-output shaft, 306-measuring head rotation plate, 307-weight, 4-measuring head fine adjustment mechanism, 401-linear translation module II, 4011-lead screw, 4012-slide rod, 4013-slide II, 402-servo motor III, 403-measuring head mounting plate, 5-C-shaped measuring head, 501-measuring head bracket, 502-bracket cover plate, 503-laser displacement sensor I, 504-laser displacement sensor II, 505-laser displacement sensor III, 506-reflection prism, 507-long axis, 508-short axis, 6-measuring head fine adjustment mechanism, 401-linear translation module II, 4011-lead screw, 4012-slide bar, 4013-slide bracket, 503-pipe bracket, and pipe bracket to be measured.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model. It should be noted that the present utility model is already in a practical development and use stage.
In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the first embodiment, as shown in fig. 1 to 8, a device for measuring the thickness of a pipe by using laser comprises a main body, wherein the main body comprises a translation mechanism 1, a lifting mechanism is arranged above the translation mechanism 1, a rotating mechanism is arranged above the lifting mechanism, the measuring mechanism comprises a measuring head fine adjustment mechanism 4 and a C-shaped measuring head 5, the measuring head fine adjustment mechanism 4 is connected with the rotating mechanism, the C-shaped measuring head 5 comprises a measuring head support 501 and a support cover plate 502, the measuring head support 501 of the C-shaped measuring head 5 is arranged on a measuring head mounting plate 403 of the measuring head fine adjustment mechanism 4, a long shaft 507 and a short shaft 508 are arranged on the measuring head support 501 of the C-shaped measuring head 5, a laser displacement sensor I503 and a laser displacement sensor II 504 are arranged on the long shaft 507, a laser displacement sensor III 505 and a reflecting prism 506 are arranged on the short shaft 508, and the reflecting prism 506 is positioned on a light path of the laser displacement sensor III 505;
when in use, the light path directions of the laser displacement sensor I503 and the laser displacement sensor II 504 on the long axis 507 face the short axis 508;
the optical path of the laser displacement sensor III 505 on the short axis 508 passes through the reflecting prism 506, and then the optical path direction of the laser displacement sensor III is towards the long axis 507 and coincides with the optical path of the laser displacement sensor I503.
The translation mechanism 1 comprises a servo motor I101 and a linear translation module I102, the linear translation module I102 comprises a slideway 1021 and a sliding block I1022, the movement of the sliding block I1022 on the slideway 1021 is used for adjusting the position of the measurement mechanism on the horizontal plane of the extending direction of the central line of the pipe 602 to be measured, the depth of the C-shaped measurement head 5 extending into the pipe 602 to be measured can be controlled, the slideway 1021 is arranged above a sliding plate 1023, the linear translation module I102 also comprises a sliding rail 1024, the sliding plate 1023 is arranged on the sliding rail 1024, the sliding rail 1024 is arranged on a bottom plate 1025, the movement of the sliding plate 1023 on the sliding rail 1024 is used for adjusting the position of the measurement mechanism on the horizontal direction perpendicular to the central line of the pipe 602 to be measured, the rotation center of the rotation mechanism 3 coincides with the central line of the pipe 602 to be measured in the vertical direction, the upper end of the sliding block I1022 in the linear translation module I102 is provided with a bearing plate 103, the bearing plate 103 is also connected with the sliding block I1022 through a limiting chain 104, the limiting chain 104 can prevent the sliding block I1022 from falling out of the slideway 1021 when sliding, the servo motor I101 is connected with the sliding block I1022, the sliding block I1022 is controlled to move on the slideway 1021, the lifting mechanism 2 is arranged on the bearing plate 103, the lifting mechanism 2 comprises a lifting electric cylinder 201, a lifting support 202 and a lifting table 203, the lifting table 203 is arranged above the lifting support 202, a grating ruler 204 is arranged at the bottom of the lifting table 203, the grating ruler 204 is used for recording the displacement of the measuring mechanism in the horizontal direction, the lifting electric cylinder 201 is connected with the lifting support 202, the lifting and the falling of the lifting support 202 are controlled, the lifting and the falling of the lifting table 203 are controlled through the lifting support 202, the position of the measuring mechanism in the vertical direction is regulated, the rotation center line of the rotating mechanism 3 is controlled to coincide with the center line of the pipe 602 to be measured in the horizontal direction, the rotating mechanism 3 is arranged at the top of the lifting support 202, there is measuring head bottom plate 301 between rotary mechanism 3 and elevating platform 203, be equipped with mounting bracket 302 on the measuring head bottom plate 301, mounting bracket 302 perpendicular mounting is in measuring head bottom plate 301, hollow rotatory bottom plate 303 is installed to mounting bracket 302 one side, install measuring head rotor plate 306 on the hollow rotatory bottom plate 303, communication sliding ring 304 and servo motor II 305 are installed to mounting bracket 302 opposite side, communication sliding ring 304 is located servo motor II 305's output shaft 3051 below, communication sliding ring 304 is the laser displacement sensor power supply in the C shape measuring head 5 and does the transmission of measuring signal under C shape measuring head 5 rotation state, servo motor II 305's output shaft 3051 passes mounting bracket 302 and hollow rotatory bottom plate 303 and is connected with measuring head rotor plate 306, measuring head rotor plate 306 bottom is provided with balancing weight 307, servo motor II 305's output shaft 3051 control measuring head rotor plate 306 drives C shape measuring head 5 and takes output shaft 3051 to do 360 rotatory motion as the center of rotation, balancing weight 307 can prevent that measuring head rotor plate 306 from taking place the unbalance loading in the rotatory in the in-process.
The measuring head fine adjustment mechanism 4 is arranged on the measuring head rotating plate 306, the measuring head fine adjustment mechanism 4 comprises a linear translation module II 401, a servo motor III 402 and a measuring head mounting plate 403, the linear translation module II 401 comprises a screw rod 4011, a sliding rod 4012 and a sliding block II 4013, the sliding block II 4013 is arranged on the screw rod 4011 and the sliding rod 4012, the measuring head mounting plate 403 is arranged on the sliding block II 4013, the servo motor III 402 is connected with the screw rod 4011, the servo motor controls the screw rod 4011 to rotate, the measuring head mounting plate 403 is adjusted to move in the vertical direction through the rotation of the screw rod 4011, the distance between the C-shaped measuring head 5 and the rotation center is controlled, the rotation radius of the C-shaped measuring head 5 is adjusted, the long shaft 507 of the measuring head support 501 is positioned far away from the middle of the measuring head rotating plate 306 and is positioned near the middle of the measuring head rotating plate 306 and is suitable for pipes 602 to be measured with different diameters, the far end of the long shaft 507 is provided with a laser displacement sensor I503, the near end of the long shaft 507 is provided with a laser displacement sensor II 504, the laser displacement sensor I503 and the laser displacement sensor II 504 are used for measuring the distance between the outer wall of the pipe 602 to be measured and the laser displacement sensor I503 and the laser displacement sensor II 504 respectively, the outer diameter of the pipe 602 to be measured can be obtained through calculation, the data between the laser displacement sensor I503 and the laser displacement sensor II 504 are compared, the accuracy of the measured data can be verified, the near end of the short shaft 508 is provided with a laser displacement sensor III 505, the far end is provided with a reflecting prism 506, the laser displacement sensor III 505 is used for measuring the distance between the inner wall of the pipe 602 to be measured and the laser displacement sensor III 505, the inner diameter of the pipe 602 to be measured can be obtained through calculation, the section of the reflecting prism 506 is an isosceles right triangle, the surface where the long side is located is a reflecting surface, the incident angle alpha=45° between the reflecting surface and the optical path of the laser displacement sensor iii 505, the reflected optical path faces the pipe body to be measured, and finally returns to the laser displacement sensor iii 505 through the reflecting surface.
The opposite of the main body is also provided with a pipe bracket 6, the top of the pipe bracket 6 is provided with a V-shaped groove 601 which is opened upwards, a pipe 602 to be tested is placed in the V-shaped groove 601, the V-shaped groove 601 can limit the center lines of the pipe 602 to be tested with different diameters to coincide in the horizontal direction, and the center line of the pipe 602 to be tested coincides with the rotation center of the rotation mechanism 3.
When the device is used, firstly, the rotation center of the rotation mechanism is aligned with the center line of the pipe 602 to be measured, the pipe 602 to be measured is placed in the V-shaped groove 601, the area to be measured of the pipe 602 to be measured extends out of the V-shaped groove 601 to be close to the position of the measurement mechanism, the position of the sliding plate is adjusted on the sliding rail, so that the rotation center of the rotation mechanism coincides with the center line of the pipe 602 to be measured in the vertical direction, the position of the lifting table is adjusted through the lifting cylinder, the rotation center of the rotation mechanism coincides with the center line of the pipe 602 to be measured in the horizontal direction, and then the rotation center of the rotation mechanism coincides with the center line of the pipe 602 to be measured completely.
And secondly, adjusting the measuring head fine adjustment mechanism 4, controlling a screw rod 4011 through a servo motor III 402 to adjust the distance between the C-shaped measuring head 5 and the rotation center, and increasing or reducing the rotation radius of the C-shaped measuring head 5, wherein the pipe wall of the pipe 602 to be measured is positioned between a long shaft 507 and a short shaft 508 in the C-shaped measuring head 5 after adjustment.
Then, the sliding block I1022 is controlled by the servo motor I101 to slide on the slideway 1021 towards the pipe 602 to be measured, the short shaft 508 of the C-shaped measuring head 5 stretches into the pipe 602 to be measured, and then the movement is stopped, and the C-shaped measuring head 5 is not in direct contact with the pipe 602 to be measured.
Finally, the C-shaped measuring head 5 is started, whether the pipe 602 to be measured has a problem or not is detected through the laser displacement sensor I503 and the laser displacement sensor II 504 on the C-shaped measuring head 5, after the pipe 602 to be measured has no error in detection, the measuring head rotating plate 306 is controlled by the servo motor II 305 to drive the C-shaped measuring head 5 to do 360-degree rotation, measurement is completed, and measurement data are collected through the communication slip ring 304.
For the collected data, the rotation diameters of the laser displacement sensor I503, the laser displacement sensor II 504 and the laser displacement sensor III 505 are known, and the laser line distance of the laser displacement sensor I503 and the laser line distance of the laser displacement sensor III 505 passing through the reflecting prism 506 are both fixed values L0; the rotation diameters of the laser displacement sensor I503 and the laser displacement sensor II 504 are D0, and the rotation diameter of the laser displacement sensor III 505 is D1; during measurement, the distance between the laser displacement sensor I503 and the outer surface of the pipe is L1, the distance between the laser displacement sensor III 505 and the inner surface of the pipe is L2, and the thickness S of the pipe can be calculated by the following formula: s=l0-L1-L2;
when the C-shaped measuring head 5 rotates 180 degrees, the distance between the laser displacement sensor I503 and the outer surface of the pipe is L1', and the distance between the laser displacement sensor III 505 and the inner surface of the pipe is L2';
the outer diameter D of the pipe measured by the laser displacement sensor I503 can be calculated by the following formula: d=d0-L1'.
The same principle can obtain the outer diameter of the pipe at the measuring position of the laser displacement sensor II 504, compare the distance measured by the laser displacement sensor I503 and the laser displacement sensor II 504 with the calculated thickness of the pipe, judge whether the outer wall of the pipe 602 to be measured is flat or horizontally placed, and verify whether the data for measuring the inner diameter, the outer diameter and the thickness of the pipe 602 to be measured are accurate or not.
The inner diameter d of the pipe measured by the laser displacement sensor III 505 can be calculated by the following formula: d=d1+l2+l2'.
As a modification of the second embodiment, it can be understood that the short axis 508 of the C-shaped measuring head 5 is divided into two sections, the reflecting prism 506 is located at the reflecting section, the laser displacement sensor iii 505 is located at the measuring section, the reflecting section is provided with a connecting post, the connecting post stretches into the measuring section and is slidably connected with the measuring section, the short axis 508 is extended when the sliding post slides out, the reflecting point of the optical path of the laser displacement sensor iii 505 on the extended reflecting prism 506 corresponds to the laser displacement sensor ii 504, at this time, the optical path of the laser displacement sensor iii 505 coincides with the optical path of the laser displacement sensor ii 504 after being reflected, so that the wall thickness deeper of the pipe to be measured or the special-shaped pipe to be measured with different thicknesses of the end and the pipe can be measured, and the application range of the device can be increased.
As a modification of the third embodiment, it is understood that a pin is mounted at a right angle to the reflecting prism 506 on the short axis 508, and is connected to the measuring head support 501 at a right angle to the reflecting prism 506, the reflecting prism 506 can rotate around the right angle, and the optical path reflection direction of the laser displacement sensor iii 505 is adjusted, so that the inner diameter deeper can be measured.
In the fourth embodiment, as a modification of the first embodiment, it is understood that a sliding column with scales is arranged on the short axis 508 and the long axis 507 of the C-shaped measuring head 5, and the sliding column is in interference fit with the long axis 507, so that the distance between the short axis 508 and the long axis 507 of the C-shaped measuring head 5 is increased, and the measuring device can be used for measuring the pipe 602 with thicker wall thickness to be measured.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the utility model, and is not meant to limit the scope of the utility model, but to limit the utility model to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (8)
1. The utility model provides an utilize device of laser measurement tubular product thickness, includes the main part, installs measuring mechanism in the main part, and main part and measuring mechanism all include servo motor, its characterized in that: the main body comprises a translation mechanism (1), a lifting mechanism (2) is arranged above the translation mechanism (1), a rotating mechanism (3) is arranged above the lifting mechanism (2), the measuring mechanism comprises a measuring head fine adjustment mechanism (4) and a C-shaped measuring head (5), the measuring head fine adjustment mechanism (4) is connected with the rotating mechanism (3), the C-shaped measuring head (5) comprises a measuring head support (501) and a support cover plate (502), the measuring head support (501) of the C-shaped measuring head (5) is arranged on a measuring head mounting plate (403) of the measuring head fine adjustment mechanism (4), a long shaft (507) and a short shaft (508) are arranged on the measuring head support (501) of the C-shaped measuring head (5), a laser displacement sensor I (503) and a laser displacement sensor II (504) are arranged on the long shaft (507), a laser displacement sensor III (505) and a reflecting prism (506) are arranged on a short shaft (506), and the reflecting prism (506) is arranged on a light path of the laser displacement sensor III (505);
when the device is used, the light path directions of the laser displacement sensor I (503) and the laser displacement sensor II (504) on the long axis (507) face the short axis (508);
the light path of the laser displacement sensor III (505) on the short axis (508) faces the long axis (507) through the reflecting prism (506) and coincides with the light path of the laser displacement sensor I (503).
2. An apparatus for measuring a thickness of a pipe using a laser according to claim 1, wherein: translation mechanism (1) is including servo motor I (101) and sharp translation module I (102), sharp translation module I (102) are including slide (1021) and slider I (1022), slide (1021) are installed in slide (1023) top, sharp translation module I (102) still include slide rail (1024), slide (1023) are installed on slide rail (1024), slide rail (1024) are installed on bottom plate (1025), slider I (1022) upper end in sharp translation module I (102) is provided with loading board (103), still be connected through spacing chain (104) between loading board (103) and slider I (1022), servo motor I (101) are connected with slider I (1022).
3. An apparatus for measuring a thickness of a pipe using a laser according to claim 1, wherein: the lifting mechanism (2) is arranged on the bearing plate (103), the lifting mechanism (2) comprises a jacking electric cylinder (201), a lifting support (202) and a lifting table (203), the lifting table (203) is arranged above the lifting support (202), a grating ruler (204) is arranged at the bottom of the lifting table (203), and the jacking electric cylinder (201) is connected with the lifting support (202).
4. An apparatus for measuring a thickness of a pipe using a laser according to claim 1, wherein: the utility model discloses a measuring head rotating plate, including elevating bracket (202), elevating platform (203), rotary mechanism (3), measuring head bottom plate (301) are installed at elevating bracket (202), be equipped with mounting bracket (302) on the measuring head bottom plate, mounting bracket (302) are installed perpendicularly in measuring head bottom plate (301), hollow rotatory bottom plate (303) are installed to mounting bracket (302) one side, install measuring head rotor plate (306) on hollow rotatory bottom plate (303), communication sliding ring (304) and servo motor II (305) are installed to mounting bracket (302) opposite side, communication sliding ring (304) are located servo motor II (305) output shaft (3051) below, servo motor II (305) output shaft (3051) pass mounting bracket (302) and hollow rotatory bottom plate (303) and are connected with measuring head rotor plate (306), measuring head rotor plate (306) bottom is provided with balancing weight (307).
5. An apparatus for measuring a thickness of a pipe using a laser according to claim 1, wherein: the measuring head fine tuning mechanism (4) is arranged on the measuring head rotating plate (306), the measuring head fine tuning mechanism (4) comprises a linear translation module II (401), a servo motor III (402) and a measuring head mounting plate (403), the linear translation module II (401) comprises a screw rod (4011), a sliding rod (4012) and a sliding block II (4013), the sliding block II (4013) is arranged on the screw rod (4011) and the sliding rod (4012), the measuring head mounting plate (403) is arranged on the sliding block II (4013), and the servo motor III (402) is connected with the screw rod (4011).
6. An apparatus for measuring a thickness of a pipe using a laser according to claim 1, wherein: the long shaft (507) of the measuring head support (501) is located at a position far away from the middle of the measuring head rotating plate (306), the short shaft (508) is located at a position close to the middle of the measuring head rotating plate (306), a laser displacement sensor I (503) is arranged at the far end of the long shaft (507), a laser displacement sensor II (504) is arranged at the near end of the long shaft (507), a laser displacement sensor III (505) is arranged at the near end of the short shaft (508), and a reflecting prism (506) is arranged at the far end.
7. The apparatus for measuring thickness of pipe using laser according to claim 6, wherein: the section of the reflecting prism (506) is an isosceles right triangle, the surface of the long side of the reflecting prism is a reflecting surface, and the incident angle alpha=45° between the reflecting surface and the light path of the laser displacement sensor III (505).
8. An apparatus for measuring a thickness of a pipe using a laser according to claim 1, wherein: the main body is also provided with a pipe support (6) opposite to the main body, the top of the pipe support (6) is provided with a V-shaped groove (601) which is opened upwards, a pipe (602) to be measured is placed in the V-shaped groove (601), and the center line of the pipe (602) to be measured is coincident with the rotation center of the rotation mechanism (3).
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