CN211668449U - High-precision profile detection device for steel rail - Google Patents
High-precision profile detection device for steel rail Download PDFInfo
- Publication number
- CN211668449U CN211668449U CN201922120513.7U CN201922120513U CN211668449U CN 211668449 U CN211668449 U CN 211668449U CN 201922120513 U CN201922120513 U CN 201922120513U CN 211668449 U CN211668449 U CN 211668449U
- Authority
- CN
- China
- Prior art keywords
- measured object
- laser
- laser range
- optical platform
- linear motion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a rail high accuracy profile detection device, including optical platform, linear motion unit, measured object support, laser rangefinder frame and laser range finder. A linear motion unit is arranged in the middle of the optical platform along the front and back directions of the optical platform; the linear motion unit is provided with a measured object bracket. The measured object is placed on the measured object support, and the measured object is driven by the linear motion unit to move back and forth. The laser ranging frame is a portal frame, and the upright columns on two sides are fixed on the left side and the right side of the optical platform; the laser range finder is installed on the laser range finding frame, a closed visual field range is formed by adjusting the angle of a laser emitting end of each laser range finder, and a measured object can be accurately measured only in the visual field range formed by the laser range finding sensor. The laser range finder hits the measured object surface with laser, gathers the image simultaneously to after being handled by the host computer, realize full-scale measurement, deviation warning, data storage, function such as problem backtracking.
Description
Technical Field
The utility model belongs to the technical field of instrument and meter, a rail high accuracy profile detection device is related to.
Background
Rails are the main components of railway transportation systems, which are used to guide rolling stock forward while withstanding the tremendous stresses of the wheels. Along with the development of railway technology, the quality of the steel rail is more and more emphasized, and whether the parameters such as the appearance size of the steel rail meet the standards or not influences the safety, the stability, the comfort level and the speed of railway operation, so that the appearance geometric dimension of the steel rail is strictly controlled, relevant profile detection is carried out when the steel rail leaves a factory, and the problem that the steel rail is put into use is avoided.
The production of the high-speed railway steel rails is completed through multiple metallurgical processes such as smelting, steelmaking, continuous casting, rolling and the like, when a continuous casting square billet enters a rolling mill and leaves the rolling mill in the rolling process, the rolling mill is stressed unevenly, the outline dimension of the steel rails is easy to deform, the length of each steel rail finished product is 100m, and the steel rails can meet the use standard (the deviation requirements of rail height, rail width, rail waist thickness, rail head width, rail foot height and the like are +/-0.6 mm) only when being welded to 500m after leaving a factory, so that the welded part of each steel rail is a serious disaster area with outline dimension defects. The defects of the outline size of the steel rail are often found in the installation process, and the welding cost and the transportation cost cause that the problem steel rail is changed into scrap steel to be treated on site, thereby bringing huge loss to the country and steel enterprises.
In the metallurgical production process of the steel rail, the quality of the steel rail is restricted by a plurality of links, and the geometric deformation of a roller (long-term abrasion) in the rolling procedure can directly influence the outline dimension deviation of the steel rail. In order to ensure that the size of the steel rail meets the use requirement, a manual detection method is the main detection means at present, and the method depends on the defects of high labor intensity, low detection efficiency and the like of an experienced worker for detection by adopting a template ruler, so that the research of a high-precision steel rail movement and detection device is particularly necessary.
Disclosure of Invention
To the problem, the utility model provides a rail high accuracy profile detection device. The utility model discloses rail high accuracy profile detection device can realize that the full profile dimension of rail detects, detects precision 0.08mm under the low-speed motion condition.
The utility model discloses rail high accuracy profile detection device, including optical platform, linear motion unit, measured object support, laser rangefinder frame and laser range finder.
A linear motion unit is arranged in the middle of the optical platform along the front and back directions of the optical platform; the linear motion unit is provided with a measured object bracket.
The measured object is placed on the measured object support, and the measured object is driven by the linear motion unit to move back and forth. The laser ranging frame is a portal frame, and the upright columns on two sides are fixed on the left side and the right side of the optical platform; the laser range finder is installed on the laser range finding frame, a closed visual field range is formed by adjusting the angle of a laser emitting end of each laser range finder, and a measured object can be accurately measured only in the visual field range formed by the laser range finding sensor.
The laser range finder hits the measured object surface with laser, gathers the image simultaneously to after being handled by the host computer, realize full-scale measurement, deviation warning, data storage, problem backtrack, functions such as stable performance.
The utility model has the advantages that:
1. the utility model discloses rail high accuracy profile detection device can realize non-contact's rail section profile size measurement.
The utility model discloses rail high accuracy profile detection device, reciprocating motion all around through high accuracy linear motion unit drives rail axial motion, realizes the full size profile measurement at rail key position.
3. The utility model discloses rail high accuracy profile detection device, testing result pass through post processing, realize functions such as deviation warning, data storage, problem backtracking.
Drawings
FIG. 1 is a schematic structural view of the high-precision profile detection device for steel rails of the present invention;
FIG. 2 is a schematic view of the installation mode of the measured object in the high-precision profile detection device for steel rails of the present invention;
FIG. 3 is a schematic view of the laser measuring unit structure and installation in the high-precision profile measuring device for steel rail of the present invention;
FIG. 4 is a schematic view of the universal adjusting mechanism in the high-precision profile detection device for steel rails of the present invention;
FIG. 5 is a schematic top view of the universal adjusting mechanism of the high-precision profile detection device for steel rails of the present invention;
fig. 6 is the utility model discloses universal adjustment mechanism adjustment mode schematic diagram among rail high accuracy profile detection device.
In the figure:
1-optical platform 2-linear motion unit 3-measured object support
4-laser ranging frame 5-laser ranging unit 501-bracket
502-turntable 503-laser range finder 504-connecting rod
504 a-first connecting rod 504 b-second connecting rod 505-fine adjustment mechanism
505 a-base 505 b-fine adjustment plate 505 c-adjusting screw
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The utility model discloses rail high accuracy profile detection device, including optical platform 1, linear motion unit 2, measured object support 3, laser rangefinder frame 4 and laser rangefinder unit 5, as shown in fig. 1.
The length of the left table board and the right table board of the optical platform 1 is 600mm, the length of the front table board and the length of the rear table board are 900mm, and the optical platform is supported by a support and horizontally arranged.
The linear motion unit 2 is composed of a displacement table, a screw, a grating ruler and a stepping motor, for example, a scholar photoelectric device 7STA 8400. The maximum speed of the linear motion unit is 20cm/s, the maximum stroke is 50cm, and the repeated positioning precision can reach +/-0.01 mm. Wherein, the two ends of the screw rod are connected with bearing seats arranged at the front and the rear of the optical platform. The displacement table is in threaded connection with the lead screw, and two ends of the displacement table are in sliding connection with the left side and the right side of the lead screw and arranged between the guide rails on the optical platform. The stepping motor is arranged on the optical platform through a bracket, and the output shaft is coaxially connected with the end part of the lead screw. The stepping motor is controlled to move forwards, backwards and stop through the stepping motor, and then the screw rod is controlled to rotate, so that the displacement table can move along the axial direction of the screw rod. The grating ruler is arranged on the displacement platform, so that the scale of the grating ruler changes when the displacement platform moves.
The measured object support 3 is fixedly arranged on a displacement table of the linear motion unit 2, and the top of the measured object support 3 is used for fixedly arranging an object to be measured, so that the measured object support 3 and the measured object arranged on the measured object support are controlled to move along the front-back direction through the linear motion unit 2. The two measured object supports 3 are respectively arranged at the front end part and the rear end part of the displacement table, so that the front edge and the rear edge of the measured object are respectively arranged in the front measured object support 3 and the rear measured object support 3, the measured object can be completely exposed in the visual field range of the laser ranging unit 4, and the full-profile detection of the measured object is realized, as shown in fig. 2.
The number of the laser ranging units 5 is 4 or 6; 4 laser ranging units 5 are respectively arranged above and below the left and right upright posts of the laser ranging frame 4; 6 laser ranging units 5 are respectively arranged above, in the middle and below the left and right upright posts of the laser ranging frame 4; because the size and the precision requirement of the measured object are different, in order to completely detect the size of the measured object, the proper number of laser ranging units 5 are selected according to the visual field, the position and the angle of the single laser ranging unit 5. Therefore, a closed visual field range is formed by adjusting the angles of the laser emitting ends of the laser ranging units 5, and the measured object can be accurately measured only in the visual field range formed by the laser ranging sensors.
The specific installation mode of the laser ranging unit is as follows:
as shown in fig. 3, each laser ranging unit 5 includes a support 501, a turntable 502, a laser rangefinder 503, a connecting rod 504, and a universal adjustment mechanism 505. The support 501 is L-shaped, a longitudinal edge of the support 501 is connected with the column in a sliding fit manner, and a threaded hole is formed in the longitudinal edge and used for installing a jacking screw, so that jacking fixation between the support 501 and the column is realized.
The connecting rods 504 include a first connecting rod 504a and a second connecting rod 504 b; the end of the first connecting rod 504a is fixed on the horizontal edge of the L-shaped bracket, the front end of the first connecting rod 504a extends forward to the front of the laser ranging frame 4, and the end is provided with a 360-degree rotating platform. The second connecting rod 504b is arranged parallel to the laser ranging frame 4, the end of the second connecting rod is connected with the 360-degree rotating platform, and the front end of the second connecting rod is provided with a fine adjustment mechanism 505.
As shown in fig. 4 and 5, the universal adjusting mechanism 505 includes a base 505a, an adjusting plate 505b, and an adjusting screw 505 c. The base 505a is fixed to the back of the laser range finder 503, and has a screw hole formed in the circumferential direction. The outer edge of the adjusting plate 505b is circumferentially provided with a through hole corresponding to the position of the threaded hole on the base 505a, the diameter of the through hole is larger than that of the adjusting screw 505c, and the adjusting screw 505c penetrates through the through hole to be in threaded connection with the threaded hole on the base 505a in the circumferential direction.
The bottom surface of the fixing base 505a is fixedly mounted on the back of the laser range finder 503, and the middle of the top surface is designed with a ball groove, and is connected with a ball head designed at the front end of the second connecting rod 504b in a ball hinge manner. The middle part of the fine adjustment plate 505b is provided with a hole which is sleeved on the front end of the second connecting rod 504b and is welded and fixed with the second connecting rod 504b, thereby realizing the installation of the laser range finder 503.
By the above mounting manner, the entire laser range finder 503 is positioned in front of the laser range finder frame 4. The laser range finder 503 can rotate in the vertical direction by a 360-degree rotating table; through loosening and tightening the screws in the universal adjusting mechanism 505, the included angle between the base 505a and the fine adjustment plate 505b can be finely adjusted, as shown in fig. 6, so that the fine adjustment of the rotation of the laser range finder 503 in the front-back direction can be further realized.
The utility model discloses rail high accuracy profile detection device can realize that the full profile dimension of rail detects under the motion condition, detects precision 0.08mm, and its working process is as follows:
when leaving the factory, the length of the finished steel rail is 100m, in order to facilitate the verification process, a 30cm steel rail is used as a measured object and placed on the measured object support 3, and the angles of the laser emitting ends of the laser ranging units 5 are adjusted, so that the measured object is in the visual field range formed by the laser ranging units. And then the upper computer controls the driving motor to move, so that the linear motion unit 2 simulates the actual production environment of the field to drive the object to be measured to move (the speed is less than 20cm/s), the laser range finder 503 shoots laser on the surface of the object to be measured, and the double cameras in the laser range finder 503 simultaneously acquire images. Laser range finder 503 passes through ethernet switch connection host computer, receives the image that laser range finder 503 gathered by the host computer, accomplishes post processing after handling the image, realizes functions such as full-scale measurement, deviation are reminded, data storage, problem backtrack.
Claims (4)
1. The utility model provides a rail high accuracy profile detection device which characterized in that: the device comprises an optical platform, a linear motion unit, a measured object bracket, a laser ranging frame and a laser range finder;
the optical platform is horizontally arranged and supported by the bracket; the middle part of the optical platform is provided with a linear motion unit along the front and back directions of the optical platform; the linear motion unit is provided with a measured object bracket;
the laser ranging frame is provided with a top beam and two side upright columns, and the two side upright columns are fixed on the left side and the right side of the optical platform; and the laser range finder is arranged on the laser range finding frame.
2. A high-accuracy profile detecting device for a steel rail according to claim 1, wherein: the laser range finder is connected with the laser range finding frame through a bracket, a rotary table, a connecting rod and a universal adjusting mechanism; wherein, the bracket is fixed on the laser ranging frame; the connecting rod is divided into two sections which are connected through a rotary table; the tail end of the connecting rod is connected with the laser range finder through the universal regulator.
3. A rail high accuracy profile detection apparatus as claimed in claim 2, wherein: the bracket is connected with the laser ranging frame in a sliding way and fixed by a jacking screw.
4. A high-accuracy profile detecting device for a steel rail according to claim 1, wherein: the two measured object supports are respectively arranged at the front end part and the rear end part of the displacement table and respectively support two ends of a measured object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922120513.7U CN211668449U (en) | 2019-11-28 | 2019-11-28 | High-precision profile detection device for steel rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922120513.7U CN211668449U (en) | 2019-11-28 | 2019-11-28 | High-precision profile detection device for steel rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211668449U true CN211668449U (en) | 2020-10-13 |
Family
ID=72732919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922120513.7U Active CN211668449U (en) | 2019-11-28 | 2019-11-28 | High-precision profile detection device for steel rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211668449U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607094A (en) * | 2021-10-11 | 2021-11-05 | 中国铁建电气化局集团第二工程有限公司 | Contact net slope laser measuring device and method |
| CN114113107A (en) * | 2021-11-18 | 2022-03-01 | 万岩铁路装备(成都)有限责任公司 | 360-degree rail damage identification system and method based on laser scanning |
| CN114749520A (en) * | 2022-04-21 | 2022-07-15 | 合肥工业大学 | Non-contact detection system for bidirectional straightener |
-
2019
- 2019-11-28 CN CN201922120513.7U patent/CN211668449U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607094A (en) * | 2021-10-11 | 2021-11-05 | 中国铁建电气化局集团第二工程有限公司 | Contact net slope laser measuring device and method |
| CN114113107A (en) * | 2021-11-18 | 2022-03-01 | 万岩铁路装备(成都)有限责任公司 | 360-degree rail damage identification system and method based on laser scanning |
| CN114113107B (en) * | 2021-11-18 | 2024-01-23 | 万岩铁路装备(成都)有限责任公司 | 360-degree rail damage identification system and method based on laser scanning |
| CN114749520A (en) * | 2022-04-21 | 2022-07-15 | 合肥工业大学 | Non-contact detection system for bidirectional straightener |
| CN114749520B (en) * | 2022-04-21 | 2024-03-19 | 合肥工业大学 | Non-contact detection system for bidirectional straightener |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211668449U (en) | High-precision profile detection device for steel rail | |
| CN102901450B (en) | Measuring device and shaft body detection equipment | |
| CN102679904B (en) | Measurement method and measurement instrument of revolution body part | |
| CN106872104A (en) | It is a kind of for tuning for Controllable Pitch Propeller blade center of gravity measurement and the compound platform of amendment | |
| CN203298725U (en) | Silicon rod geometric dimension measuring instrument | |
| CN107339967B (en) | Roundness measuring instrument | |
| CN110895133A (en) | Automobile glass spherical surface detection device and detection method thereof | |
| CN208450245U (en) | A kind of sheet metal component bending angle on-line detecting system | |
| CN207180613U (en) | Non-contact type bearing lasso external diameter measuring device | |
| CN219551475U (en) | Hub comprehensive dimension measuring machine | |
| CN103292702B (en) | A kind of silicon rod physical dimension measuring instrument | |
| CN117091517A (en) | Wall thickness measuring device and method for small-inner-diameter large-length cylinder structure | |
| CN111175674A (en) | High-precision magnetic field measuring equipment | |
| CN206772495U (en) | It is a kind of to be used for tuning for Controllable Pitch Propeller blade center of gravity measurement and the compound platform of amendment | |
| CN206832155U (en) | Bar appearance detection apparatus and bar appearance detection system | |
| CN206140917U (en) | 3D printing apparatus Z shafting all | |
| CN102183219B (en) | On-line detection device for torsion resistance of steel rail | |
| CN209945303U (en) | Automatic detection device for position degree of wheel bolt hole | |
| CN207650120U (en) | Surface defects detection equipment | |
| CN112197729A (en) | Plastic pipe material detection equipment | |
| CN201583257U (en) | Laser measurement device for sharp edge of aviatic precision part | |
| CN206177258U (en) | Flat straightness measuring device's rail brackets | |
| CN206038203U (en) | Skid force detection device | |
| CN211477031U (en) | Automobile glass spherical surface detection device | |
| CN213887656U (en) | Detection and repair equipment for large roller box of wide and thick plate straightener |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |