CN101634549A - Oil well drill rod straightness detecting device and detecting method thereof - Google Patents
Oil well drill rod straightness detecting device and detecting method thereof Download PDFInfo
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- CN101634549A CN101634549A CN200910305922A CN200910305922A CN101634549A CN 101634549 A CN101634549 A CN 101634549A CN 200910305922 A CN200910305922 A CN 200910305922A CN 200910305922 A CN200910305922 A CN 200910305922A CN 101634549 A CN101634549 A CN 101634549A
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Abstract
The invention relates to an oil well drill rod straightness detecting device and a detecting method thereof in the technical field of manufacture of oil well drill rods. The oil well drill rod straightness detecting device comprises a detecting frame, a sensor, a transmission rotating wheel, a support pin, a phase angle detector and two detector drive devices, wherein the detecting frame is suspended by the support pin; the sensor, the phase angle detector and the two detector drive devices are movably arranged on the detecting frame respectively; the detector drive devices are symmetrically arranged at both sides of the detecting frame respectively; the phase angle detector is fixedly arranged on the detector drive device and is in contact with an oil well drill rod to be detected; the transmission rotating wheel is positioned below the oil well drill rod to be detected; the transmission rotating wheel, the sensor, the phase angle detector and the two detector drive devices are respectively connected to a detecting terminal. Compared with the prior art, the invention can automatically detect a dazzling and straightening blind of the oil well drill rod and a plurality of parameters of the chord height of 1.5 m simultaneously and have high detecting speed, detecting precision and automation level.
Description
Technical field
What the present invention relates to is the pick-up unit and the detection method in a kind of drill pipe of oil well manufacturing technology field, specifically is a kind of based on oil well drill rod straightness detecting device and the detection method thereof of multiparameter noncontact with flowing mode.
Background technology
Along with the growth continuously and healthily of China's economy, petroleum resources residing strategic position in national economy is day by day appeared suddenly.Except actively raising the petroleum resources from international crude oil market, China has also strengthened the exploitation of domestic petroleum resource and exploration.The weldless steel tube Zhao oil well pipe of petroleum industry special use (including: drill string member (drill pipe of oil well, drill collar etc.) and sleeve pipe) pipe is the basic goods and materials of petroleum industry.At present, the drilling well drilling depth has reached more than the ten thousand metres, and this has higher requirement to drill pipe of oil well, particularly the requirement of straight degree.The big drill pipe of oil well of straight degree deviation makes error constantly add up with oil well depth, causes it until huge centrifugal force and fractures, and the oil well that will cause being worth tens million of units and even more than one hundred million units is scrapped.According to " API Std drill pipe of oil well standard (APISPEC 5D) ", the detection of drill pipe of oil well degree of eccentricity required be: the maximum eccentricity of measuring in the terminal 5～6inch scope of distance thickening with mounting rule should not surpass 0.093inch (2.3622mm).For steel pipe manufacturing enterprise, all essential detections such as the two ends upset end of drill pipe of oil well (rolling head), two ends straightening blind area, two ends 1.5m action.
Find by prior art documents: " API Std drill pipe of oil well standard (APISPEC 5D) " advises with mounting the detection of drill pipe of oil well degree of eccentricity and realizes.Drill pipe of oil well is in the rotation testing process, because swing roller motion is asynchronous and factor such as surface abrasion, can causes the beat of drill pipe of oil well or beats.The advantage of mounting rule then is itself to ride in the drill pipe of oil well surface, with the synchronous beat of drill pipe of oil well or beat, the beat or the caused error of beating can be rejected from testing result like this.But mounting rule are by artificial hand-held, are the Mechanical Contact formula, once can only detect a cross section, and detection efficiency is lower, and it is bigger to detect error, can't realize on-line Full detection.
Find by retrieval again: Xue Ting, scholars such as Yang schoolmate are at University Of Tianjin's journal, publish an article on 2003 03 phases, the optimal design and the demarcation of Visual Sensors Measuring Linearity of Steel Pipe have been introduced, its method is: respectively arrange 5 laser vision sensors respectively in the 1m of the two ends of weldless steel tube, the simultaneously-measured scheme of segmentation, send a branch of optical plane by semiconductor laser LD, it is with after weldless steel tube cuts mutually, form an elliptic arc at the steel pipe outer round surface, receive the image of each elliptic arc by ccd video camera, the machine realtime graphic is handled and is tried to achieve each elliptic arc center coordinate in world coordinate system as calculated.Under computer control, making hydraulic gear drive steel pipe contacts with an end positioning switch, this moment, positioning switch sent the measurement pulse signal to computing machine, through the time-delay about 1min, after treating that steel pipe is stable, should 5 vision sensors of end by computer control, the elliptic arc image when gathering 5 optical planes fast and cutting mutually with steel pipe.Thereafter, the computer control hydraulic gear drives steel pipe and moves to the other end, and gathers the measuring-signal of 5 sensors of this end.Last computing machine is handled 10 width of cloth images, and through aforementioned algorithm, obtains the straightness error of steel pipe.This method is to take optical plane that 5 laser instruments send at the elliptic arc image that steel tube surface forms by CCD, determines the linearity of the measuring section of surveying then by image processing and analyzing.The deficiency of this method is: steel pipe is to be under the quiescent conditions, does not have the data in one week of detection of dynamic steel pipe to judge the tube bending situation, and the phase position of bending point and axial location.
Summary of the invention
The present invention is directed to the prior art above shortcomings, provide a kind of oil well drill rod straightness detecting device and detection method thereof, comprehensive, the full automatic detections of a plurality of parameters such as two ends rolling head (two ends upset end), the two ends straightening blind area of realization drill pipe of oil well, two ends 1.5m action.
The present invention is achieved by the following technical solutions:
The present invention relates to oil well drill rod straightness detecting device comprises: testing stand, sensor, the transmission runner, feet, phasing degree detecting device and two detector drive devices, wherein: testing stand is provided with by the feet suspention, sensor, phasing degree detecting device and two detector drive devices are movably set on the testing stand respectively, the detector drive device is symmetricly set in the both sides of testing stand respectively, the phasing degree detecting device is fixedly set on the detector drive device and with drill pipe of oil well to be measured and contacts, the transmission runner is positioned at drill pipe of oil well to be measured below, transmission runner, sensor, phasing degree detecting device and two detector drive devices are connected to sense terminals respectively.
Described testing stand is long tubular construction.
Described transmission runner comprises: be arranged at swiveling wheel and vertical transmission runner below the drill pipe of oil well to be measured respectively, wherein: the rotation centerline of some groups of swiveling wheels is parallel with the center line of drill pipe of oil well to be measured, the axle center of some groups of vertical transmission runners is vertical with the center line of drill pipe of oil well to be measured, and swiveling wheel and vertical transmission runner are connected to sense terminals respectively and rotate or move axially to drive drill pipe of oil well circumference rotation to be measured.
Described feet comprises: screw rod, sleeve and back up pad, and wherein: sleeve is fixedlyed connected with back up pad, and back up pad is fixedly set in outside the testing stand, and an end of screw rod is fixedlyed connected with testing stand, and the other end of screw rod and sleeve flexibly connect.
Described sensor comprises: some groups of laser displacement sensors, the thick fine positioning sensor of left end laser and the thick fine positioning sensors of right-hand member laser, wherein: some groups of laser displacement sensors are fixedly set in the downside of testing stand, thick fine positioning sensor of left end laser and the thick fine positioning sensor of right-hand member laser are fixedly set in two ends, the left and right sides downside of testing stand respectively, and laser displacement sensor, the thick fine positioning sensor of left end laser and the thick fine positioning sensor of right-hand member laser are connected to sense terminals respectively.
Described detector drive device comprises: rolling bearing, vee-block, the vee-block web joint, orienting sleeve, guide pole, the guide pole web joint, cylinder piston rod, cylinder and cylinder block, wherein: the rolling bearing rotation is arranged at the lower end of vee-block and contacts with drill pipe of oil well to be measured, orienting sleeve is fixedly set on the testing stand, guide pole is movably set in the orienting sleeve, the lower end of the guide pole in vee-block and the orienting sleeve is connected by the vee-block web joint, the upper end of guide pole is connected with the guide pole web joint, the guide pole web joint is connected with cylinder piston rod, and cylinder is fixedly set on the testing stand by cylinder block.
Described phasing degree detecting device comprises: rotary encoder, pinch roller, slide block and spring, wherein: slide block and detector drive device flexibly connect, rotary encoder is fixedly set in the slide block, pinch roller is fixedly connected with the turning axle of rotary encoder and contact with drill pipe of oil well to be measured, the output terminal of rotary encoder is connected with sense terminals, one end of spring is fixedlyed connected with slide block, and the other end of spring contacts with the detector drive device, and spring applies downward thrust to slide block.
The present invention relates to the detection method of above-mentioned oil well drill rod straightness detecting device, may further comprise the steps:
The first step, all vertical transmission runners upwards lift drill pipe of oil well simultaneously and drive drill pipe of oil well and are moved to the left, the left end that moves to testing stand when drill pipe of oil well by the thick fine positioning sensor of left end laser to after stop to move, all vertical transmission runners move down, and this moment, drill pipe of oil well 7 was laid on the swiveling wheel;
Second step, cylinder action on the detector drive device, cylinder piston rod drives the guide pole web joint, guide pole, the vee-block web joint, vee-block, rolling bearing, and the phasing degree detecting device moves down, when the rolling bearing in the vee-block touches drill pipe of oil well, cylinder piston rod also moves down continuing, owing to can not move down after rolling bearing touches drill pipe of oil well, under the effect of reacting force, testing stand is lifted, piston arrives cylinder in cylinder bottom, at this moment, the Up Highway UHW keeping parallelism state of testing stand and drill pipe of oil well body.
The 3rd step, swiveling wheel begin rotation, the rotation of driving drill pipe of oil well, because the pinch roller in the detecting device of phasing degree is pressed on the drill pipe of oil well, so pinch roller rotates with drilling rod, and driven rotary scrambler rotation, the output of rotary encoder is connected to the control system terminal, is used to detect the phasing degree of drill pipe of oil well; Meanwhile, some groups of laser displacement sensors are started working in the sensor, detect and the corresponding some groups of data in drill pipe of oil well phasing degree, handle amount of bow and the 1.5m action just obtained a drill pipe of oil well left end rolling jerk value, straightening blind area through Computer Analysis.
The 4th step, cylinder move upward, testing stand resets, all vertical transmission runners upwards lift drill pipe of oil well simultaneously and drive drill pipe of oil well and continue to be moved to the left, the right-hand member that is moved to testing stand when the drill pipe of oil well right-hand member by the thick fine positioning sensor of right-hand member laser then, stop to move, all vertical transmission runners move down, and this moment, drill pipe of oil well 7 was laid on the swiveling wheel.
Repeating above-mentioned second step to the 4th step all measures until the amount of bow of the right-hand member of a whole piece drill pipe of oil well rolling jerk value, straightening blind area and 1.5m action and finishes.
Compared with prior art the present invention can detect drill pipe of oil well rolling head, straightening blind area, a plurality of parameters of 1.5m action simultaneously automatically, and detection speed is fast, accuracy of detection is high, automaticity is high.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is phasing degree of the present invention detecting device and detector drive apparatus structure synoptic diagram.
Fig. 3 is a transmission runner diagrammatic cross-section.
Fig. 4 is the embodiment synoptic diagram.
Embodiment
Below embodiments of the invention are elaborated, present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As Fig. 1, Fig. 2 and shown in Figure 3, present embodiment comprises: testing stand 1, sensor 2, transmission runner 3, feet 4, phasing degree detecting device 5 and two detector drive devices 6, wherein: testing stand 1 is provided with by feet 4 suspentions, sensor 2 is fixedly installed on the downside of testing stand 1, phasing degree detecting device 5 and two detector drive devices 6 are movably set in respectively on the testing stand 1, detector drive device 6 is arranged at the symmetric position at testing stand 1 center respectively, phasing degree detecting device 5 is fixedly set on the detector drive device 6 and with drill pipe of oil well 7 to be measured and contacts, transmission runner 3 is positioned at drill pipe of oil well to be measured 7 belows, transmission runner 3, sensor 2, phasing degree detecting device 5 and two detector drive devices 6 are connected to sense terminals respectively.
Described testing stand 1 is a rectangle structure.
Described sensor 2 comprises: some groups of laser displacement sensors 8, the thick fine positioning sensor 9 of left end laser and the thick fine positioning sensors 10 of right-hand member laser, wherein: some groups of laser displacement sensors 8 are fixedly set in the downside of testing stand 1, thick fine positioning sensor 9 of left end laser and the thick fine positioning sensor 10 of right-hand member laser are fixedly set in two ends, the left and right sides downside of testing stand 1 respectively, and laser displacement sensor 8, the thick fine positioning sensor 9 of left end laser and the thick fine positioning sensor 10 of right-hand member laser are connected to sense terminals respectively.
As shown in Figure 3, described transmission runner 3 comprises: be arranged at swiveling wheel 11 and vertical transmission runner 12 below the drill pipe of oil well to be measured 7 respectively, wherein: the rotation centerline of some groups of swiveling wheels 11 is parallel with the center line of drill pipe of oil well 7 to be measured, the axle center of some groups of vertical transmission runners 12 is vertical with the center line of drill pipe of oil well 7 to be measured, and swiveling wheel 11 and vertical transmission runner 12 are connected to sense terminals respectively and rotate or move axially to drive drill pipe of oil well 7 circumference rotation to be measured.
Described feet 4 comprises: screw rod 13, sleeve 14 and back up pad 15, wherein: sleeve 14 is fixedlyed connected with back up pad 15, back up pad 15 is fixedly set in outside the testing stand 1, and an end of screw rod 13 is fixedlyed connected with testing stand 1, and the other end of screw rod 13 and sleeve 14 flexibly connect.
As depicted in figs. 1 and 2, described phasing degree detecting device 5 comprises: rotary encoder 16, pinch roller 17, slide block 18 and spring 19, wherein: slide block 18 flexibly connects with detector drive device 6, rotary encoder 16 is fixedly set in the slide block 18, pinch roller 17 is fixedly connected with the turning axle of rotary encoder 16 and contact with drill pipe of oil well 7 to be measured, the output terminal of rotary encoder 16 is connected with sense terminals, one end of spring 19 is fixedlyed connected with slide block 18, the other end of spring 19 contacts with detector drive device 6, and spring 19 applies downward thrust to slide block 18.
As depicted in figs. 1 and 2, described detector drive device 6 comprises: rolling bearing 20, vee-block 21, vee-block web joint 22, orienting sleeve 23, guide pole 24, guide pole web joint 25, cylinder piston rod 26, cylinder 27 and cylinder block 28, wherein: rolling bearing 20 rotations are arranged at the lower end of vee-block 21 and contact with drill pipe of oil well 7 to be measured, orienting sleeve 23 is fixedly set on the testing stand 1, guide pole 24 is movably set in the orienting sleeve 23, the lower end of the guide pole 24 in vee-block 21 and the orienting sleeve 23 is connected by vee-block web joint 22, the upper end of guide pole 24 is connected with guide pole web joint 25, guide pole web joint 25 is connected with cylinder piston rod 26, and cylinder 27 is fixedly set on the testing stand 1 by cylinder block 28.
As shown in Figure 4, present embodiment specifically detects step and comprises:
At first detect a rolling jerk value, the amount of bow of straightening blind area, the 1.5m action of drilling rod left end, it is as follows that it detects step:
The first step, all vertical transmission runners 12 upwards lift drill pipe of oil well 7 simultaneously and drive drill pipe of oil well 7 and are moved to the left, after being detected by the thick fine positioning sensor 9 of left end laser, the left end that moves to testing stand 1 when drill pipe of oil well 7 stops to move, all vertical transmission runners 12 move down, and this moment, drill pipe of oil well 7 was laid on the swiveling wheel 11;
Second step, cylinder 27 actions on the detector drive device 6, cylinder piston rod 26 drives guide pole web joint 25, guide pole 24, vee-block web joint 22, vee-block 21, rolling bearing 20, and phasing degree detecting device 5 moves down, when the rolling bearing in the vee-block 21 20 touches drill pipe of oil well 7, cylinder piston rod 26 also moves down continuing, owing to can not move down after rolling bearing 20 touches drill pipe of oil well 7, under the effect of reacting force, testing stand 1 is lifted, piston arrives cylinder 27 in cylinder 27 bottom, at this moment, the Up Highway UHW keeping parallelism state of testing stand 1 and drill pipe of oil well 7 bodys.
The 3rd step, swiveling wheel 11 begin rotation, drive drill pipe of oil well 7 rotations, because the pinch roller 17 in the phasing degree detecting device 5 is pressed on the drill pipe of oil well 7, so pinch roller rotates with drilling rod, and driven rotary scrambler 16 rotations, the output of rotary encoder 16 is connected to the control system terminal, is used to detect the phasing degree of drill pipe of oil well 7; Meanwhile, some groups of laser displacement sensors 8 are started working in the sensor 2, detect and the corresponding some groups of data in drill pipe of oil well 7 phasing degree, handle amount of bow and the 1.5m action just obtained drill pipe of oil well 7 a left ends rolling jerk value, straightening blind area through Computer Analysis.
The 4th step, cylinder 27 move upward, testing stand 1 resets, all vertical transmission runners 12 upwards lift drill pipe of oil well 7 simultaneously and drive drill pipe of oil well 7 and continue to be moved to the left, the right-hand member that is moved to testing stand 1 when drill pipe of oil well 7 right-hand members by the thick fine positioning sensor of right-hand member laser then, stop to move, all vertical transmission runners 12 move down, and this moment, drill pipe of oil well 7 was laid on the swiveling wheel 11.
Repeat second, third, the 4th step, this has just finished amount of bow and the 1.5m action of drill pipe of oil well 7 a right-hand members rolling jerk value, straightening blind area.Thereby finished the detection of whole drill pipe of oil well.
Present embodiment is finished detection simultaneously automatically, and detection speed, precision and automaticity are all than conventional art height.
Claims (7)
1. oil well drill rod straightness detecting device, it is characterized in that, comprise: testing stand, sensor, the transmission runner, feet, phasing degree detecting device and two detector drive devices, wherein: testing stand is provided with by the feet suspention, sensor, phasing degree detecting device and two detector drive devices are movably set on the testing stand respectively, the detector drive device is arranged at the symmetric position at testing stand center respectively, the phasing degree detecting device is fixedly set on the detector drive device and with drill pipe of oil well to be measured and contacts, the transmission runner is positioned at drill pipe of oil well to be measured below, transmission runner, sensor, phasing degree detecting device and two detector drive devices are connected to sense terminals respectively.
2. oil well drill rod straightness detecting device according to claim 1, it is characterized in that, described transmission runner comprises: be arranged at swiveling wheel and vertical transmission runner below the drill pipe of oil well to be measured respectively, wherein: the rotation centerline of some groups of swiveling wheels is parallel with the center line of drill pipe of oil well to be measured, the axle center of some groups of vertical transmission runners is vertical with the center line of drill pipe of oil well to be measured, and swiveling wheel and vertical transmission runner are connected to sense terminals respectively and rotate or move axially to drive drill pipe of oil well circumference rotation to be measured.
3. oil well drill rod straightness detecting device according to claim 1, it is characterized in that, described feet comprises: screw rod, sleeve and back up pad, wherein: sleeve is fixedlyed connected with back up pad, back up pad is fixedly set in outside the testing stand, one end of screw rod is fixedlyed connected with testing stand, and the other end of screw rod and sleeve flexibly connect.
4. oil well drill rod straightness detecting device according to claim 1, it is characterized in that, described sensor comprises: some groups of laser displacement sensors, thick fine positioning sensor of left end laser and the thick fine positioning sensor of right-hand member laser, wherein: some groups of laser displacement sensors are fixedly set in the downside of testing stand, thick fine positioning sensor of left end laser and the thick fine positioning sensor of right-hand member laser are fixedly set in two ends, the left and right sides downside of testing stand, laser displacement sensor respectively, thick fine positioning sensor of left end laser and the thick fine positioning sensor of right-hand member laser are connected to sense terminals respectively.
5. oil well drill rod straightness detecting device according to claim 1, it is characterized in that, described detector drive device comprises: rolling bearing, vee-block, the vee-block web joint, orienting sleeve, guide pole, the guide pole web joint, cylinder piston rod, cylinder and cylinder block, wherein: the rolling bearing rotation is arranged at the lower end of vee-block and contacts with drill pipe of oil well to be measured, orienting sleeve is fixedly set on the testing stand, guide pole is movably set in the orienting sleeve, the lower end of the guide pole in vee-block and the orienting sleeve is connected by the vee-block web joint, the upper end of guide pole is connected with the guide pole web joint, the guide pole web joint is connected with cylinder piston rod, and cylinder is fixedly set on the testing stand by cylinder block.
6. oil well drill rod straightness detecting device according to claim 1, it is characterized in that, described phasing degree detecting device comprises: rotary encoder, pinch roller, slide block and spring, wherein: slide block and detector drive device flexibly connect, rotary encoder is fixedly set in the slide block, pinch roller is fixedly connected with the turning axle of rotary encoder and contact with drill pipe of oil well to be measured, the output terminal of rotary encoder is connected with sense terminals, one end of spring is fixedlyed connected with slide block, the other end of spring contacts with the detector drive device, and spring applies downward thrust to slide block.
7. the detection method of an oil well drill rod straightness detecting device according to claim 1 is characterized in that, may further comprise the steps:
The first step, all vertical transmission runners upwards lift drill pipe of oil well simultaneously and drive drill pipe of oil well and are moved to the left, the left end that moves to testing stand when drill pipe of oil well by the thick fine positioning sensor of left end laser to after stop to move, all vertical transmission runners move down, and this moment, drill pipe of oil well was laid on the swiveling wheel;
Second step, cylinder action on the detector drive device, cylinder piston rod drives the guide pole web joint, guide pole, the vee-block web joint, vee-block, rolling bearing, and the phasing degree detecting device moves down, when the rolling bearing in the vee-block touches drill pipe of oil well, cylinder piston rod also moves down continuing, owing to can not move down after rolling bearing touches drill pipe of oil well, under the effect of reacting force, testing stand is lifted, piston arrives cylinder in cylinder bottom, at this moment, the Up Highway UHW keeping parallelism state of testing stand and drill pipe of oil well body;
The 3rd step, swiveling wheel begin rotation, the rotation of driving drill pipe of oil well, because the pinch roller in the detecting device of phasing degree is pressed on the drill pipe of oil well, so pinch roller rotates with drilling rod, and driven rotary scrambler rotation, the output of rotary encoder is connected to the control system terminal, is used to detect the phasing degree of drill pipe of oil well; Meanwhile, some groups of laser displacement sensors are started working in the sensor, detect and the corresponding some groups of data in drill pipe of oil well phasing degree, handle amount of bow and the 1.5m action just obtained a drill pipe of oil well left end rolling jerk value, straightening blind area through Computer Analysis;
The 4th step, cylinder move upward, testing stand resets, all vertical transmission runners upwards lift drill pipe of oil well simultaneously and drive drill pipe of oil well and continue to be moved to the left, the right-hand member that is moved to testing stand when the drill pipe of oil well right-hand member by the thick fine positioning sensor of right-hand member laser then, stop to move, all vertical transmission runners move down, and this moment, drill pipe of oil well was laid on the swiveling wheel;
Repeating above-mentioned second step to the 4th step all measures until the amount of bow of the right-hand member of a whole piece drill pipe of oil well rolling jerk value, straightening blind area and 1.5m action and finishes.
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| CN101769726A (en) * | 2010-02-12 | 2010-07-07 | 上海交通大学 | Welded pipe end straightness online detection device |
| CN101769727A (en) * | 2010-02-21 | 2010-07-07 | 上海交通大学 | Online automatic detection system of local straight degree of circular-section workpiece |
| CN102335682A (en) * | 2010-07-28 | 2012-02-01 | 宝山钢铁股份有限公司 | Online detecting and straightening equipment and method of straightness of pipe end of drill pipe |
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| CN103245280A (en) * | 2013-05-20 | 2013-08-14 | 无锡市钻通工程机械有限公司 | Drill stem straightness detection device |
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| FI83565C (en) * | 1989-06-26 | 1991-07-25 | Imatran Voima Oy | Method and apparatus for measuring alignment state |
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| CN101226379B (en) * | 2008-01-17 | 2010-06-23 | 上海交通大学 | Control system for automatic detecting and aligning drilling rod straight degree together |
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| CN101769726A (en) * | 2010-02-12 | 2010-07-07 | 上海交通大学 | Welded pipe end straightness online detection device |
| CN101769726B (en) * | 2010-02-12 | 2011-03-23 | 上海交通大学 | Welded pipe end straightness online detection device |
| CN101769727A (en) * | 2010-02-21 | 2010-07-07 | 上海交通大学 | Online automatic detection system of local straight degree of circular-section workpiece |
| CN102335682A (en) * | 2010-07-28 | 2012-02-01 | 宝山钢铁股份有限公司 | Online detecting and straightening equipment and method of straightness of pipe end of drill pipe |
| CN102335682B (en) * | 2010-07-28 | 2013-06-19 | 宝山钢铁股份有限公司 | Online detecting and straightening equipment and method of straightness of pipe end of drill pipe |
| CN102706314A (en) * | 2012-06-01 | 2012-10-03 | 内蒙古一机集团大地石油机械有限责任公司 | Automatic linearity detecting and straightening equipment for end of sucker rod |
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| CN103616006A (en) * | 2013-12-16 | 2014-03-05 | 天津英利新能源有限公司 | Straightness detection device |
| CN106607341A (en) * | 2016-12-21 | 2017-05-03 | 大连德迈仕精密科技股份有限公司 | Shaft part double-flat-position automatic detecting equipment |
| CN106607342A (en) * | 2016-12-21 | 2017-05-03 | 大连德迈仕精密科技股份有限公司 | Device for detecting flat position of shaft workpiece |
| CN106824812A (en) * | 2016-12-21 | 2017-06-13 | 大连德迈仕精密科技股份有限公司 | A kind of axial workpiece automatic checkout equipment |
| CN106607341B (en) * | 2016-12-21 | 2018-11-23 | 大连德迈仕精密科技股份有限公司 | A kind of double flat position automatic checkout equipments of shaft-like workpiece |
| CN106824812B (en) * | 2016-12-21 | 2019-01-22 | 大连德迈仕精密科技股份有限公司 | A kind of axial workpiece automatic checkout equipment |
| CN107816964A (en) * | 2017-11-03 | 2018-03-20 | 宁波康强电子股份有限公司 | A kind of special-shaped copper material lateral bending automatic detection device and its detection method |
| CN107816964B (en) * | 2017-11-03 | 2023-12-15 | 宁波康强电子股份有限公司 | Automatic detection device and detection method for side bending of special-shaped copper material |
| CN108375360A (en) * | 2018-02-26 | 2018-08-07 | 山东雷帕得汽车技术股份有限公司 | A kind of online chord length detection device of leaf spring |
| WO2021189734A1 (en) * | 2020-03-26 | 2021-09-30 | 宝山钢铁股份有限公司 | Method and device for measuring straightness of pipe end of steel pipe |
| CN111457826A (en) * | 2020-03-31 | 2020-07-28 | 鞍钢股份有限公司 | Rapid angle checking method for straightening machine |
| CN113324511A (en) * | 2021-05-14 | 2021-08-31 | 江苏徐工工程机械研究院有限公司 | Device and method for detecting straightness of drill rod |
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