CN115290002B - Device and method for quickly and accurately detecting shape and size of large-diameter multi-corrugated pipe - Google Patents
Device and method for quickly and accurately detecting shape and size of large-diameter multi-corrugated pipe Download PDFInfo
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- CN115290002B CN115290002B CN202211236747.8A CN202211236747A CN115290002B CN 115290002 B CN115290002 B CN 115290002B CN 202211236747 A CN202211236747 A CN 202211236747A CN 115290002 B CN115290002 B CN 115290002B
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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
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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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
Abstract
The invention relates to the technical field of corrugated pipe measurement and discloses a device and a method for quickly and accurately detecting the shape and size of a large-caliber multi-corrugated pipe, wherein the device comprises a detection box body with an opening at one side and a clamping travelling mechanism, the detection box body is provided with an inner cavity detection mechanism and an outer wall detection mechanism, the inner cavity detection mechanism comprises a detection assembly and a horizontally arranged hollow detection pipe, the detection assembly comprises a first photoelectric sensor which is hinged on the hollow detection pipe, and the deflection axis of the first photoelectric sensor is perpendicular to the axis of the hollow detection pipe; the outer wall detection mechanism comprises a cross beam and a second photoelectric sensor, the second photoelectric sensor is hinged to the cross beam, and the deflection axis of the second photoelectric sensor is perpendicular to the axis of the hollow detection tube. The detection range covers the inside of the concave corrugated section of the corrugated pipe by adjusting the detection angle for many times, so that the detection dead angle of the multi-wave corrugated pipe is eliminated to the great extent, the accurate measurement of the multi-wave corrugated pipe is realized, and the rigidity characteristic of the corrugated pipe is accurately obtained.
Description
Technical Field
The invention relates to the technical field of corrugated pipe measurement, in particular to a device and a method for quickly and accurately detecting the shape and the size of a large-diameter multi-corrugated pipe.
Background
The corrugated pipe is used as a functional elastic original piece, the influence of the size of the corrugated pipe on the rigidity of the corrugated pipe is very important, the size deviation is large, certain difficulty is caused to on-site assembly construction, the rigidity of the corrugated pipe can not meet the design requirement, the safe and stable operation of the corrugated pipe under the working condition is influenced, and the operation of the whole system is also influenced. If the corrugated pipe is large in rigidity, other parts of the system cannot pull or compress the corrugated pipe to displace, and the displacement cannot be absorbed, so that the larger the force of the system is, the collapse of the operating system can be caused; and the rigidity is smaller, the corrugated pipe cannot bear pressure and cannot meet the use requirement. Therefore, accurate measurement of dimensional deviation of the bellows is extremely important for determining the stiffness characteristics of the bellows. Due to structural particularity, especially large-caliber and multi-wave design, the corrugated pipe has more inwards concave corrugated sections and more visual dead angles and positions of detection dead angles, the shape and the size of the inside of the inwards concave corrugated sections cannot be detected by using a common measurement method, so that the measurement difficulty is high, the measurement efficiency is low, and the accurate measurement of the corrugated pipe is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a device and a method for quickly and accurately detecting the shape and the size of a large-diameter multi-wave corrugated pipe.
The purpose of the invention is realized by the following technical scheme: a rapid and accurate detection device for the shape and size of a large-caliber multi-corrugated pipe comprises a detection box body with an opening at one side, and further comprises a clamping travelling mechanism, an inner cavity detection mechanism and an outer wall detection mechanism, wherein the inner cavity detection mechanism and the outer wall detection mechanism are arranged in the detection box body;
the outer wall detection mechanism is provided with a plurality of, and is a plurality of outer wall detection mechanism round the circumference interval arrangement of cavity detection tube, outer wall detection mechanism includes crossbeam and second photoelectric sensor, the crossbeam with cavity detection tube parallel arrangement, second photoelectric sensor articulates on the crossbeam, the deflection axis of second photoelectric sensor perpendicular to the axis of cavity detection tube, the clamping running gear be used for loading the bellows along the axial displacement of cavity detection tube.
The effect of adopting the above technical scheme is that the clamping travelling mechanism drives the bellows to be measured to move along the axial path of the hollow detection tube, so that the bellows can run through the range covered by the first photoelectric sensor and the second photoelectric sensor, in the detection process, the deflection angles of the first photoelectric sensor and the second photoelectric sensor are adjusted for multiple times, after the measurement angle of the first photoelectric sensor is adjusted each time, the hollow detection tube needs to be moved, so that the bellows can run through the range covered by the first photoelectric sensor and the second photoelectric sensor in each detection, the detection range can be covered inside the concave corrugated section of the bellows by adjusting the detection angle, the detection dead angle of the multiwave bellows is eliminated to the greatest extent, the accurate measurement of the multiwave bellows is realized, the rigidity characteristic of the bellows under the size is accurately obtained, and the multiwave bellows is reasonably used.
In some embodiments, the detection assembly is provided in plurality, the detection assemblies are arranged at intervals along the axial direction of the hollow detection tube, each first photoelectric sensor is correspondingly provided with a deflection mechanism, the deflection mechanism comprises a hinge ball, a connecting rod and a telescopic rod, the hinge ball is hinged on the hollow detection tube, one end of the connecting rod is fixedly connected with the hinge ball, the other end of the connecting rod is provided with the first photoelectric sensor, a sliding rod is coaxially arranged in the hollow detection tube, the sliding rod moves along the axial direction of the hollow detection tube, one end of the telescopic rod is hinged on the hinge ball, and the other end of the telescopic rod is hinged on the sliding rod.
In some embodiments, a fixed pipe is coaxially arranged in the hollow detection pipe, one end of the fixed pipe is connected with the detection box body, the other end of the fixed pipe is slidably penetrated by a movable pipe, the movable pipe is connected with one end of the sliding rod, a first lead screw is arranged in the fixed pipe, the first lead screw is rotatably connected with the fixed pipe, the movable pipe is in threaded connection with the first lead screw, and one end of the first lead screw penetrates out of the detection box body and is in transmission connection with a first motor.
In some embodiments, the telescopic rod comprises a first rod and a second rod, one end of the first rod is hinged on the hinge ball, the other end of the first rod is slidably provided with the second rod, and one end of the second rod far away from the first rod is hinged on the sliding rod.
In some embodiments, the clamping travelling mechanism comprises a travelling base, a scissor type lifting structure and an installation top plate, one end of the bottom of the scissor type lifting structure is hinged to the travelling base, the other end of the bottom of the scissor type lifting structure is connected with the travelling base in a sliding mode, one end of the top of the scissor type lifting structure is hinged to the installation top plate, the other end of the top of the scissor type lifting structure is connected with the installation top plate in a sliding mode, and a fixed base and a sliding base are sequentially arranged on the installation top plate along the axial direction of the hollow detection tube.
In some embodiments, two sets of friction wheels are rotatably disposed on the fixed base and the sliding base, the two sets of friction wheels are disposed at intervals along a direction perpendicular to the hollow detection tube, a wheel shaft of each friction wheel is in transmission connection with an output shaft of a friction wheel motor, the friction wheels are located in the concave corrugations of the corrugated tube, and a pressure sensor is embedded in a side wall of each friction wheel.
In some embodiments, a screw groove is formed in the top of the mounting top plate, a second screw is arranged in the screw groove, the second screw is rotatably connected with the mounting top plate through a bearing, a sliding seat is matched with the second screw in a threaded manner, the sliding seat is matched with the screw groove in a sliding manner, the sliding seat is fixedly connected to the sliding seat, a screw motor is mounted on the mounting top plate, and one end of the second screw is in transmission connection with an output shaft of the screw motor through a coupler.
In some embodiments, a cross bar is slidably disposed on a side wall of the cross bar, the second photoelectric sensor is connected to the cross bar through an intermediate bar, the intermediate bar includes a third bar and a fourth bar, one end of the third bar is hinged to the cross bar, the other end of the third bar is slidably inserted through the fourth bar, the fourth bar is hinged to the cross bar through a pin, and the second photoelectric sensor is mounted at one end of the fourth bar, which is far away from the third bar.
In some embodiments, one end of the cross rod movably penetrates through the detection box body to be connected to the driving plate, an air cylinder is installed on the outer side of the detection box body, and an expansion shaft of the air cylinder is connected with the driving plate.
A method for rapidly and accurately detecting the shape and size of a large-caliber multi-wave corrugated pipe comprises the following steps:
s1, primarily installing a corrugated pipe; presetting the distance between a fixed base and a sliding base according to the length of the corrugated pipe to be detected, respectively installing two ends of the corrugated pipe on the fixed base and the sliding base, and embedding a friction wheel into concave corrugations of the corrugated pipe;
s2, accurately installing the corrugated pipe; moving the sliding base to naturally straighten the corrugated pipe, and detecting a straightening force through a pressure sensor on the friction wheel to avoid causing extra tension to the corrugated pipe to enable the corrugated pipe to be in a stretched straight state;
s3, adjusting the detection height of the corrugated pipe; the mounting top plate is driven to lift through the extension and contraction of the scissor-fork type lifting structure, so that the outer wall detection mechanism is positioned on the outer side of the corrugated pipe for detection, and the inner cavity detection mechanism is positioned in the inner cavity of the corrugated pipe for detection;
s4, bellows movement detection; the clamping travelling mechanism drives the corrugated pipe to be detected to enter the detection box body from the opening of the detection box body to detect the shape and the size; the deflection angle of the first photoelectric sensor and the second photoelectric sensor is changed for multiple times, the concave corrugated section of the corrugated pipe is detected, then the corrugated pipe is rotated to detect again, and the full-coverage detection of the multi-wave corrugated pipe is realized; the height position of the corrugated pipe can be changed through a scissor-type lifting structure, so that the first photoelectric sensor and the second photoelectric sensor are close to or far away from the concave corrugated section of the corrugated pipe, and the detection dead angle is eliminated;
s5, moving out the corrugated pipe;
s6, obtaining a detection value by using an averaging method; and averaging the numerical values detected by the plurality of first photoelectric sensors detecting the same point position to obtain the shape and the size of the inner cavity of the corrugated pipe, and averaging the numerical values detected by the plurality of second photoelectric sensors detecting the same point position to obtain the shape and the size of the inner cavity of the corrugated pipe.
The beneficial effects of the invention are:
1. the measurement angle of the first photoelectric sensor and the measurement angle of the second photoelectric sensor are adjusted, the measurement range is enlarged, the measurement height of the corrugated pipe is adjustable, the measurement distance is adjusted, the measurement range of the first photoelectric sensor and the measurement range of the second photoelectric sensor cover the inner concave corrugated section of the corrugated pipe, the detection dead angle of the multi-wave corrugated pipe is eliminated to the greatest extent, the multi-wave corrugated pipe is accurately measured, the rigidity characteristic of the corrugated pipe under the size is accurately obtained, and the multi-wave corrugated pipe is reasonably used.
2. The corrugated pipe can rotate on the clamping travelling mechanism, so that circumferential coverage measurement of the corrugated pipe is realized by rotating the corrugated pipe, and a full coverage effect is achieved.
Drawings
FIG. 1 is a perspective view of a rapid and accurate detection device for shape and size of a large-caliber multi-wave bellows according to the present invention;
FIG. 2 is a perspective view of the lumen detection mechanism of the present invention;
FIG. 3 is a schematic view of the internal structure of the lumen detection mechanism of the present invention;
FIG. 4 is an enlarged view taken at A in FIG. 3;
FIG. 5 is an enlarged view of FIG. 3 at B;
FIG. 6 is a schematic structural diagram of an outer wall detection mechanism according to the present invention;
FIG. 7 is an enlarged view at C of FIG. 6;
FIG. 8 is a front view of a device for rapidly and precisely detecting the shape and size of a large-diameter multi-bellows according to the present invention;
in the figure, 1-a detection box body, 2-a clamping travelling mechanism, 3-an inner cavity detection mechanism, 4-an outer wall detection mechanism, 5-a hollow detection tube, 6-a first photoelectric sensor, 7-a cross beam, 8-a second photoelectric sensor, 9-a hinging ball, 10-a connecting rod, 11-a telescopic rod, 12-a sliding rod, 13-a fixed tube, 14-a movable tube, 15-a first lead screw, 16-a first motor, 17-a first rod piece, 18-a second rod piece, 19-a travelling base, 20-a scissor type lifting structure, 21-a mounting top plate, 22-a fixed base, 23-a sliding base, 24-a friction wheel, 25-a friction wheel motor, 26-a lead screw groove, 27-a second lead screw, 28-a sliding base, 29-a lead screw motor, 30-a cross beam, 31-a third rod piece, 32-a fourth rod piece, 33-a driving disc and 34-a cylinder.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following descriptions.
In the first embodiment, as shown in fig. 1 to 8, a rapid and accurate detection device for the shape and size of a large-diameter multi-bellows comprises a detection box body 1 with an opening at one side, which provides a dark environment suitable for measurement to avoid the influence of an external chaotic light source on the measurement, a light source is additionally arranged in the detection box body 1 to meet the measurement requirement and ensure the acquisition quality, a clamping travelling mechanism 2, an inner cavity detection mechanism 3 and an outer wall detection mechanism 4 are further arranged in the detection box body 1, the inner cavity detection mechanism 3 and the outer wall detection mechanism 4 are both arranged in the detection box body 1, as shown in fig. 2, the inner cavity side detection mechanism 3 comprises a detection assembly and a horizontally arranged hollow detection tube 5, one end of the hollow detection tube 5 is fixedly arranged on the inner wall of the detection box body 1, the detection assembly is provided with a plurality of detection assemblies, the detection assemblies are uniformly distributed along the axial direction of the hollow detection tube 5, and the detection assemblies cover the axial direction of the bellows for measurement, the detection component comprises a plurality of first photoelectric sensors 6, the plurality of first photoelectric sensors 6 are uniformly distributed along the circumferential direction of the hollow detection tube 5, the plurality of first photoelectric sensors 6 of the same detection component measure the circumferential direction of the corrugated tube, the first photoelectric sensors 6 are hinged to the outer wall of the hollow detection tube 5, the deflection axis of the first photoelectric sensors 6 is perpendicular to the axis of the hollow detection tube 5, the measurement angle of the first photoelectric sensors 6 can be adjusted, so that the measurement light of the first photoelectric sensors is emitted to the inner wall of the corrugated tube in different inclination angles, the measurement light of the first photoelectric sensors 6 can enter the concave corrugated section of the corrugated tube to perform shape simulation and size measurement, the measurement precision is greatly improved, the rigidity characteristic of the corrugated tube under the shape and size can be accurately obtained, and the practical application of the corrugated tube is more accurate, the application can be more reasonable; the outer wall detection mechanisms 4 are arranged in a plurality of numbers, the outer wall detection mechanisms 4 are arranged at intervals around the circumference of the hollow detection pipe 5, and different positions in the circumferential direction of the corrugated pipe are detected through the outer wall detection mechanisms 4, so that circumferential coverage is realized; as shown in fig. 6 and 7, the outer wall detection mechanism 4 includes a cross beam 7 and a second photoelectric sensor 8, the cross beam 7 is arranged in parallel with the hollow detection tube 5, the second photoelectric sensor 8 is hinged on the cross beam 7, and a deflection axis of the second photoelectric sensor 8 is perpendicular to an axis of the hollow detection tube 5, wherein a plurality of second photoelectric sensors 8 are arranged in each outer wall detection mechanism 4, the plurality of second photoelectric sensors 8 are uniformly distributed along a length direction of the cross beam 7, the plurality of second photoelectric sensors 8 detect different axial positions of the corrugated tube, so as to achieve axial coverage of the corrugated tube, and secondly, a measurement angle of the second photoelectric sensor 8 is adjustable, so that measurement light emitted by the second photoelectric sensor 8 can enter an inward concave corrugated section of the outer wall of the corrugated tube, thereby more accurately simulating an external shape and a size of the multi-wave corrugated tube, and by comparing a measurement scale of the first photoelectric sensor 6 with a measurement scale of the second photoelectric sensor 8, a radial thickness of the corrugated tube can be obtained, thereby effectively reflecting a stiffness characteristic of the corrugated tube; the corrugated pipe detection device is characterized in that the corrugated pipe detection device is uniformly distributed along the axial direction of the hollow detection pipe 5, the clamping travelling mechanism 2 is used for loading the corrugated pipe to move along the axial direction of the hollow detection pipe 5, the clamping travelling mechanism 2 drives the corrugated pipe to be detected to move along the axial direction of the hollow detection pipe 5, the corrugated pipe is enabled to run out of the coverage range of the first photoelectric sensor 6 and the second photoelectric sensor 8, the deflection angle of the first photoelectric sensor 6 and the deflection angle of the second photoelectric sensor 8 are adjusted for multiple times in the detection process, after the measurement angle of the first photoelectric sensor 6 is adjusted for each time, the hollow detection pipe 5 needs to be moved, the corrugated pipe is enabled to run out of the coverage range of the first photoelectric sensor 6 and the second photoelectric sensor 8 in each detection, the detection range is enabled to cover the inner concave corrugated section of the corrugated pipe in a mode of adjusting the detection angle, the detection dead angle of the multiwave corrugated pipe is eliminated to the greatest extent, the accurate measurement of the multiwave corrugated pipe is realized, the rigidity characteristic of the corrugated pipe under the size is accurately obtained, and the multiwave corrugated pipe is reasonably applied.
In the second embodiment, on the basis of the first embodiment, referring to fig. 2 to 5, the deflection design for the first photoelectric sensor 6 is that a plurality of detection assemblies are arranged, the plurality of detection assemblies are arranged at intervals along the axial direction of the hollow detection tube 5, each first photoelectric sensor 6 is correspondingly provided with a deflection mechanism, the deflection mechanism comprises a hinged ball 9, a connecting rod 10 and a telescopic rod 11, as shown in fig. 4, the telescopic rod 11 comprises a first rod 17 and a second rod 18, one end of the first rod 17 is hinged on the hinged ball 9, the other end is slidably penetrated by the second rod 18, one end of the second rod 18 far away from the first rod 17 is hinged on the sliding rod 12, the hinged ball 9 is hinged on the hollow detection tube 5, one end of the connecting rod 10 is fixedly connected with the hinged ball 9, the other end is provided with a first photoelectric sensor 6, a sliding rod 12 is coaxially arranged in the hollow detection tube 5, the sliding rod 12 moves along the axial direction of the hollow detection tube 5, one end of a telescopic rod 11 is hinged on a hinge ball 9, the other end is hinged on the sliding rod 12, when the sliding rod 12 moves, the telescopic rod 11 drives the hinge ball 9 to deflect, the hinge ball 9 deflects to drive a connecting rod 10 to deflect, so that the first photoelectric sensor 6 on the connecting rod 10 is driven to deflect, the measurement angle of the first photoelectric sensor 6 is changed, the telescopic rod 11 has a telescopic function to adapt to the distance change of the connection part of the two ends of the telescopic rod 11, so that a deflection mechanism can smoothly drive the first photoelectric sensor 6 to deflect, the moving distances of the sliding rod 12 are different, and the deflection angles of the first photoelectric sensors 6 are also different; as shown in fig. 5, a fixed tube 13 is coaxially disposed in the hollow detection tube 5, one end of the fixed tube 13 is connected to the detection box 1, the other end of the fixed tube 13 slidably penetrates through a movable tube 14, the movable tube 14 is connected to one end of a sliding rod 12, a first lead screw 15 is disposed in the fixed tube 13, the first lead screw 15 is rotatably connected to the fixed tube 13, the movable tube 14 is in threaded connection with the first lead screw 15, one end of the first lead screw 15 penetrates out of the detection box 1 to be in transmission connection with a first motor 16, the first lead screw 15 is driven to rotate by the first motor 16, the movable tube 14 is slidably connected to the fixed tube 13, so that the rotational freedom of the movable tube 14 is limited, the movable tube 14 axially translates along the first lead screw 15, the sliding rod 12 is driven to axially move along the hollow detection tube 5, the moving direction of the sliding rod 12 is changed by forward and backward rotation of the first motor 16, so that the first photoelectric sensor 6 is deflected clockwise or counterclockwise, the deflection range of the first photoelectric sensor 6 is increased, and dead angle of measurement can be greatly eliminated.
Third embodiment, on the basis of the second embodiment, as shown in fig. 6 and 7, the deflection of the second photoelectric sensor 8 is designed such that a cross bar 30 is slidably disposed on a side wall of the cross bar 7, the second photoelectric sensor 8 is connected to the cross bar 30 through an intermediate bar, the intermediate bar includes a third bar 31 and a fourth bar 32, one end of the third bar 31 is hinged to the cross bar 30, the other end of the third bar slidably penetrates through the fourth bar 32, the fourth bar 32 is hinged to the cross bar 7 through a pin, the second photoelectric sensor 8 is mounted at an end of the fourth bar 32 away from the third bar 31, the curved bar structure of the first photoelectric sensor 8 is applied, the second photoelectric sensor 8 deflects through movement of the cross bar 30, one end of the cross bar 30 movably penetrates through the detection box 1 and is connected to the cross bar 33, an air cylinder 34 is mounted outside the detection box 1, a telescopic shaft of the air cylinder 34 drives a driving disc 33 to move through the air cylinder 34, the driving disc 33 simultaneously drives the cross bar 30 of the plurality of outer wall detection mechanisms to move, thereby implementing synchronous operation of the plurality of outer wall detection mechanisms, the cross bar 30 and the deflection of the intermediate bar and the deflection of the optical sensor are connected to the driving disc 33, thereby enabling the plurality of the second photoelectric sensor to change the deflection of the same average angle of the second photoelectric sensor 8, and reduce the detection error of the second photoelectric sensor, and the measurement.
In the fourth embodiment, as shown in fig. 1 and 8, the clamping traveling mechanism 2 in the first embodiment needs to have a lifting degree of freedom and also needs to be capable of driving the corrugated pipe to rotate, and therefore, the clamping traveling mechanism 2 is specially designed, specifically, the clamping traveling mechanism 2 includes a traveling base 19, a scissor-type lifting structure 20 and a mounting top plate 21, one end of the bottom of the scissor-type lifting structure 20 is hinged to the traveling base 19, the other end of the bottom of the scissor-type lifting structure 20 is slidably connected to the traveling base 19, one end of the top of the scissor-type lifting structure 20 is hinged to the mounting top plate 21, the other end of the top of the scissor-type lifting structure 20 is slidably connected to the mounting top plate 21, a fixed base 22 and a sliding machine base 23 are sequentially arranged on the mounting top plate 21 along the axial direction of the hollow detection tube 5, two scissor-type lifting structures 20 are arranged, and the two scissor-type lifting structures 20 are symmetrically arranged, the support has good support stability, the sliding ends at the bottoms of the two scissor type lifting structures 20 are connected through a support rod, the support rod is connected with a telescopic cylinder, the two scissor type lifting structures 20 are driven by the telescopic cylinder to extend or contract, the height adjustment of the installation top plate 21 is realized, the scissor type lifting structures have small volume and large telescopic range, the requirement of the measurement of the large-caliber corrugated pipe is met, two groups of friction wheels 24 are rotatably arranged on the fixed base 22 and the sliding base 23, the two groups of friction wheels 24 are arranged at intervals along the direction vertical to the hollow detection pipe 5, the wheel shaft of the friction wheel 24 is in transmission connection with the output shaft of a friction wheel motor 25, the friction wheel 24 is positioned in the concave corrugation of the corrugated pipe, a pressure sensor is embedded in the side wall of the friction wheel 24, the friction wheel 24 extends into the concave corrugation section of the corrugated pipe to contact with the outer wall of the corrugated pipe, and the friction wheel 24 is limited through the convex corrugation section of the corrugated pipe, the anti-dropping situation is that the friction wheel 24 adopts a rubber wheel with a larger friction wheel to avoid the slipping situation, so that the friction wheel 24 can stably drive the corrugated pipe to rotate, secondly, the friction wheel 24 extends into the concave corrugated section of the corrugated pipe, the straightening situation of the corrugated pipe can be detected through the pressure sensor, specifically, in order to ensure the measurement precision of the corrugated pipe, the corrugated pipe is in a natural straightening state, the measurement accuracy is ensured, the corrugated pipe is straightened through the movement of the sliding machine seat 23 without being deformed by the tensile force, whether the corrugated pipe is straightened in place or not is detected through the pressure sensor, the actual size of the corrugated pipe is prevented from being changed by the straightening excessively, in order to avoid the corrugated pipe from being stretched excessively, the sliding machine seat 23 adopts a lead screw transmission pair with higher precision, specifically, a lead screw groove 26 is formed in the top of the mounting top plate 21, a second lead screw 27 is arranged in the lead screw groove 26, the second lead screw 27 is rotatably connected with the mounting top plate 21 through a bearing, a sliding seat 28 is in threaded fit on the second lead screw 27, the sliding seat 28 is in sliding fit with the lead screw groove 26, the sliding seat 23 is fixedly connected with the sliding seat 28, a lead screw motor 29 is arranged on the mounting top plate 21, one end of the second lead screw 27 is in transmission connection with an output shaft of the lead screw motor 29 through a coupler, the lead screw motor 29 drives the second lead screw 27 to rotate, and the sliding seat 28 is in sliding fit in the lead screw groove 26, so that the rotation freedom degree of the sliding seat 28 is limited, the sliding seat 28 is enabled to translate along the axial direction of the second lead screw 27, the sliding seat 23 on the sliding seat is driven to move, and the corrugated pipe is stretched to a natural straightening state; during specific implementation, the guide bottom plate is arranged at the inner bottom of the detection box body, the two guide rails are arranged on the guide bottom plate in parallel, the travelling wheels at the bottom of the travelling base 19 are steel wheels, the steel wheels are matched on the guide rails in a rolling mode, and therefore the travelling direction of the clamping travelling mechanism 2 is limited, and the clamping travelling mechanism 2 can accurately move axially along the hollow detection tube 5.
In summary, the method for detecting the shape and size of the corrugated pipe by using the rapid and accurate detection device for the shape and size of the large-caliber multi-corrugated pipe comprises the following steps:
s1, primarily installing a corrugated pipe; presetting the distance between a fixed machine base 22 and a sliding machine base 23 according to the length of the corrugated pipe to be detected, respectively installing two end heads of the corrugated pipe on the fixed machine base 22 and the sliding machine base 23, and embedding a friction wheel 24 into the concave corrugation of the corrugated pipe;
s2, accurately installing the corrugated pipe; the sliding base 23 is moved to naturally straighten the corrugated pipe, and the straightening force is detected by a pressure sensor on the friction wheel 24, so that the corrugated pipe is prevented from being in a stretched straight state due to extra tension on the corrugated pipe;
s3, adjusting the detection height of the corrugated pipe; the scissor-type lifting structure 20 extends and contracts to drive the installation top plate 21 to lift, so that the outer wall detection mechanism 4 is positioned on the outer side of the corrugated pipe for detection, the inner cavity detection mechanism 3 is positioned in the inner cavity of the corrugated pipe for detection, and during initial adjustment, the axis of the corrugated pipe and the axis of the hollow detection pipe 5 are approximately positioned on the same horizontal plane according to the caliber of the corrugated pipe and the height of the hollow detection pipe 5;
s4, bellows movement detection; the clamping travelling mechanism drives the corrugated pipe to be detected to enter the detection box body 1 from the opening of the detection box body 1 for detecting the shape and the size; during primary detection, the first photoelectric sensor 6 and the second photoelectric sensor 8 are perpendicular to the corrugated pipe to emit detection light to perform shape simulation and size detection, so that a primary outline of the corrugated pipe is obtained primarily, then deflection angles of the first photoelectric sensor 6 and the second photoelectric sensor 8 are changed for multiple times, the concave corrugated section of the corrugated pipe is detected, when secondary detection is performed, the corrugated pipe is driven to move along the axial direction of the hollow detection pipe 5 through the clamping travelling mechanism, the axial area of the corrugated pipe is covered, after the detection is completed, the corrugated pipe is rotated to repeat the detection again, the circumferential coverage measurement of the corrugated pipe is realized, the coverage area of the corrugated pipe is greatly improved, and the accuracy of the measurement is improved; when the deflection angles of the first photoelectric sensor 6 and the second photoelectric sensor 8 are adjusted or partial positions of the first photoelectric sensor and the second photoelectric sensor are in the measurement dead angle, the height position of the corrugated pipe can be changed through the scissor-fork type lifting structure 20, so that the first photoelectric sensor 6 and the second photoelectric sensor 8 are close to or far away from the concave corrugated section of the corrugated pipe to eliminate the detection dead angle, and after the detection height of the corrugated pipe is changed, the lifting value of the corrugated pipe needs to be calculated on the measurement sizes of the first photoelectric sensor 6 and the second photoelectric sensor 8;
s5, moving out the corrugated pipe;
s6, obtaining a detection value by using an averaging method; and averaging the numerical values detected by the plurality of first photoelectric sensors 6 detecting the same point position to obtain the shape and the size of the inner cavity of the corrugated pipe, and averaging the numerical values detected by the plurality of second photoelectric sensors 8 detecting the same point position to obtain the shape and the size of the inner cavity of the corrugated pipe.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention; and those skilled in the art will appreciate that the benefits to be achieved by the present invention are only better than those achieved by current embodiments of the prior art under certain circumstances, rather than the best use directly in the industry.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and is not to be construed as limited to the exclusion of other embodiments, and that various other combinations, modifications, and environments may be used and modifications may be made within the scope of the concepts described herein, either by the above teachings or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The rapid and accurate detection device for the shape and size of the large-caliber multi-corrugated pipe comprises a detection box body (1) with an opening at one side, and is characterized by further comprising a clamping travelling mechanism (2), an inner cavity detection mechanism (3) and an outer wall detection mechanism (4), wherein the inner cavity detection mechanism (3) and the outer wall detection mechanism (4) are arranged in the detection box body (1), the inner cavity detection mechanism (3) comprises a detection assembly and a hollow detection pipe (5) which is horizontally arranged, one end of the hollow detection pipe (5) is fixedly arranged on the inner wall of the detection box body (1), the detection assembly comprises a plurality of first photoelectric sensors (6), the plurality of first photoelectric sensors (6) are uniformly distributed along the circumferential direction of the hollow detection pipe (5), the first photoelectric sensors (6) are hinged to the outer wall of the hollow detection pipe (5), and the axis of the first photoelectric sensors (6) is perpendicular to the axis of the hollow detection pipe (5);
the outer wall detection mechanisms (4) are arranged in a plurality of numbers, the outer wall detection mechanisms (4) are arranged around the hollow detection tube (5) at intervals in the circumferential direction, each outer wall detection mechanism (4) comprises a cross beam (7) and a second photoelectric sensor (8), the cross beams (7) and the hollow detection tube (5) are arranged in parallel, the second photoelectric sensors (8) are hinged to the cross beams (7), the deflection axes of the second photoelectric sensors (8) are perpendicular to the axis of the hollow detection tube (5), and the clamping travelling mechanism (2) is used for loading corrugated tubes to move along the axial direction of the hollow detection tube (5);
the detection assemblies are arranged at intervals along the axial direction of the hollow detection tube (5), each first photoelectric sensor (6) is correspondingly provided with a deflection mechanism, each deflection mechanism comprises a hinge ball (9), a connecting rod (10) and a telescopic rod (11), the hinge balls (9) are hinged on the hollow detection tube (5), one end of each connecting rod (10) is fixedly connected with the hinge ball (9), the other end of each connecting rod is provided with the first photoelectric sensor (6), a sliding rod (12) is coaxially arranged in the hollow detection tube (5), the sliding rod (12) moves along the axial direction of the hollow detection tube (5), one end of each telescopic rod (11) is hinged on the hinge ball (9), and the other end of each telescopic rod is hinged on the sliding rod (12);
a fixed pipe (13) is coaxially arranged in the hollow detection pipe (5), one end of the fixed pipe (13) is connected with the detection box body (1), the other end of the fixed pipe (13) is slidably penetrated with a movable pipe (14), the movable pipe (14) is connected with one end of the sliding rod (12), a first lead screw (15) is arranged in the fixed pipe (13), the first lead screw (15) is rotatably connected with the fixed pipe (13), the movable pipe (14) is in threaded connection with the first lead screw (15), and one end of the first lead screw (15) penetrates through the detection box body (1) to be in transmission connection with a first motor (16);
the lateral wall of crossbeam (7) slides and is provided with horizontal pole (30), second photoelectric sensor (8) through the intermediate lever with horizontal pole (30) are connected, the intermediate lever includes third member (31) and fourth rod spare (32), the one end of third member (31) with horizontal pole (30) are articulated, and fourth rod spare (32) are worn to be equipped with in the other end slides, fourth rod spare (32) through the round pin axle with crossbeam (7) are articulated, second photoelectric sensor (8) are installed fourth rod spare (32) are kept away from the one end of third member (31).
2. The device for rapidly and accurately detecting the shape and the size of the large-caliber multi-bellow bellows as claimed in claim 1, wherein the telescopic rod (11) comprises a first rod (17) and a second rod (18), one end of the first rod (17) is hinged on the hinge ball (9), the other end is slidably provided with the second rod (18), and one end of the second rod (18) far away from the first rod (17) is hinged on the sliding rod (12).
3. The large-caliber multi-corrugated-pipe shape and size rapid and accurate detection device according to claim 2, wherein the clamping travelling mechanism (2) comprises a travelling base (19), a scissor type lifting structure (20) and a mounting top plate (21), one end of the bottom of the scissor type lifting structure (20) is hinged to the travelling base (19), the other end of the bottom of the scissor type lifting structure (20) is connected with the travelling base (19) in a sliding mode, one end of the top of the scissor type lifting structure (20) is hinged to the mounting top plate (21), the other end of the top of the scissor type lifting structure (20) is connected with the mounting top plate (21) in a sliding mode, and a fixed base (22) and a sliding machine base (23) are sequentially arranged on the mounting top plate (21) along the axial direction of the hollow detection pipe (5).
4. The device for rapidly and accurately detecting the shape and the size of a large-caliber multi-corrugated pipe according to claim 3, wherein two sets of friction wheels (24) are rotatably arranged on the fixed base (22) and the sliding base (23), the two sets of friction wheels (24) are arranged at intervals along a direction perpendicular to the hollow detection pipe (5), a wheel shaft of each friction wheel (24) is in transmission connection with an output shaft of a friction wheel motor (25), the friction wheels (24) are positioned in concave corrugations of the corrugated pipe, and a pressure sensor is embedded in a side wall of each friction wheel (24).
5. The large-caliber multi-corrugated-pipe shape and size quick and accurate detection device according to claim 4, wherein a lead screw groove (26) is formed in the top of the installation top plate (21), a second lead screw (27) is arranged in the lead screw groove (26), the second lead screw (27) is rotatably connected with the installation top plate (21) through a bearing, a sliding seat (28) is matched with the upper thread of the second lead screw (27), the sliding seat (28) is matched with the lead screw groove (26) in a sliding manner, the sliding seat (23) is fixedly connected to the sliding seat (28), a lead screw motor (29) is installed on the installation top plate (21), and one end of the second lead screw (27) is in transmission connection with an output shaft of the lead screw motor (29) through a coupler.
6. The device for rapidly and accurately detecting the shape and the size of the large-caliber multi-corrugated pipe according to claim 5, wherein one end of the cross rod (30) movably penetrates out of the detection box body (1) to be connected to a driving plate (33), an air cylinder (34) is installed on the outer side of the detection box body (1), and an expansion shaft of the air cylinder (34) is connected with the driving plate (33).
7. The detection method of the large-caliber multi-wave corrugated pipe shape and size quick and accurate detection device according to any one of claims 4 to 6, characterized by comprising the following steps of:
s1, primarily installing a corrugated pipe; presetting the distance between a fixed machine base (22) and a sliding machine base (23) according to the length of the corrugated pipe to be detected, respectively installing two end heads of the corrugated pipe on the fixed machine base (22) and the sliding machine base (23), and embedding a friction wheel (24) into the concave corrugation of the corrugated pipe;
s2, accurately installing the corrugated pipe; the sliding base (23) is moved to naturally straighten the corrugated pipe, and the straightening force is detected by a pressure sensor on a friction wheel (24) to avoid causing extra tension to the corrugated pipe so that the corrugated pipe is in a stretched straight state;
s3, adjusting the detection height of the corrugated pipe; the mounting top plate (21) is driven to lift through the extension and contraction of the scissor-fork type lifting structure (20), so that the outer wall detection mechanism (4) is positioned at the outer side of the corrugated pipe for detection, and the inner cavity detection mechanism (3) is positioned in the inner cavity of the corrugated pipe for detection;
s4, bellows movement detection; the clamping travelling mechanism drives the corrugated pipe to be detected to enter the detection box body (1) from the opening of the detection box body (1) for detecting the shape and the size; the deflection angles of the first photoelectric sensor (6) and the second photoelectric sensor (8) are changed for multiple times, the concave corrugated section of the corrugated pipe is detected, then the corrugated pipe is rotated to detect again, and the full-coverage detection of the multi-wave corrugated pipe is realized; the height position of the corrugated pipe is changed through the scissor type lifting structure (20), so that the first photoelectric sensor (6) and the second photoelectric sensor (8) are close to or far away from the concave corrugated section of the corrugated pipe, and the detection dead angle is eliminated;
s5, moving out the corrugated pipe;
s6, obtaining a detection value by using an averaging method; and averaging the numerical values detected by the plurality of first photoelectric sensors (6) detecting the same point position to obtain the shape and the size of the inner cavity of the corrugated pipe, and averaging the numerical values detected by the plurality of second photoelectric sensors (8) detecting the same point position to obtain the shape and the size of the inner cavity of the corrugated pipe.
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| CN117029718B (en) * | 2023-07-24 | 2024-01-26 | 无锡市昊昊钢管有限公司 | Accurate steel pipe detection device |
| CN116660478B (en) * | 2023-07-26 | 2023-09-22 | 成都市特种设备检验检测研究院(成都市特种设备应急处置中心) | Automatic detection robot for heat exchange tube |
| CN117367355B (en) * | 2023-12-06 | 2024-04-02 | 绵阳奥力达科技有限公司 | Small-diameter inclined hole detection device of thermostat housing |
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