CN106392187A - Position-based steel rail length measurement system and measurement method - Google Patents
Position-based steel rail length measurement system and measurement method Download PDFInfo
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- CN106392187A CN106392187A CN201610456036.XA CN201610456036A CN106392187A CN 106392187 A CN106392187 A CN 106392187A CN 201610456036 A CN201610456036 A CN 201610456036A CN 106392187 A CN106392187 A CN 106392187A
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- rail
- sawing
- data
- length
- steel rail
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D59/00—Accessories specially designed for sawing machines or sawing devices
- B23D59/001—Measuring or control devices, e.g. for automatic control of work feed pressure on band saw blade
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a position-based steel rail length measurement system and a measurement method. The system comprises rail end detection devices mounted on fixed supports on the two sides or the single side of a steel rail conveying roller way, a signal transmission line and a data display device. The vertical distance between a measuring field of each rail end detection device and the saw face, close to the steel rail preparing sawing end, of sawing equipment is the same as the standard specified length of a steel rail. The rail end detection devices are connected with the data display device through the signal transmission line. The measurement method comprises the steps that the position value x of the end face of the sawn end of the steel rail is measured in real time through the rail end detection devices, x, the standard specified length value a and the standard parameter b are added through the data display device, and the steel rail length y is obtained; and when y is within the steel rail specified length deviation range, direct sawing is carried out, and otherwise, sawing is carried out after the position of the steel rail is adjusted in real time to be within the specified length deviation range. According to the position-based steel rail length measurement system and the measurement method, the steel rail length value can be calibrated, precision detection of the steel rail length is achieved, data are displayed in real time, and stability and reliability are achieved.
Description
Technical field
The present invention relates to a kind of location-based rail length measuring system and measuring method, belong to rail length measurement technique field.
Background technology
The tolerance of rail length clearly requires in the rail standard of various countries, and the rail length variation meeting respective standard requires to be one of qualified essential condition of rail product.In actual production process, typically by equipped with the measurement wheel of encoder, grating, servomotor, the length of rail is measured, and by corresponding program, the deviation producing in measurement process is modified, carry out the sawing of rail when measuring length and being consistent with the sawing length of setting, the rail qualified to produce length；Using the sawing device comprising circular saw bit, sawing device is installed on rail and transports by roller-way for sawing.But, in actual use, deformed by measurement foot wheel abrasion, servomotor driven roller is worn and torn, and the impact of the factor such as grating and encoder fault leads to rail linear measure longimetry deviation, beyond the deviation range allowing, make the rail of production unqualified, and be difficult to find in time.
Content of the invention
The technical problem to be solved is to provide a kind of location-based rail length measuring system and measuring method, shown by the real-time measurement data of rail length, after being easy to adjustment sawing in time before railroad sawing, length is it is ensured that the length of rail is within the deviation range that standard specifies.
Solve above-mentioned technical problem technical scheme be：
A kind of location-based rail length measuring system, including sawing device, its improvements is：It also includes rail end detecting device, signal transmission line data display device, rail end detecting device is installed on rail and transports on roller-way both sides or the fixed support of one side, and the vertical range that its detection interval center line to sawing device prepares between the saw face at sawing end near rail is identical with the standard cut lengths of rail；Rail end detecting device is connected with data presentation device by signal transmission line.
A kind of above-mentioned location-based rail length measuring system, described rail end detecting device includes detecting element data process circuit；Described data presentation device includes data disaply moudle data processing module；Data processing circuit is connected with data processing module by signal transmission line.
A kind of above-mentioned location-based rail length measuring system, described detecting element is to be symmetrically arranged in rail to transport one group of infrared-emitting diode of roller-way both sides and one group of infrared receiving diode, the infrared ray of infrared-emitting diode and infrared receiving diode formation constitutes the detection interval of a horizontal plane,, in the center line of rail length direction, the vertical range that it is prepared near rail between the saw face at sawing end with sawing device is identical with the standard cut lengths of rail for the central axis of this detection interval.
A kind of measuring method of location-based rail length measuring system, comprises the following steps：
Step 1：Mounting rail end detecting device so as to detection interval center line to sawing device near rail prepare sawing end saw face between vertical range identical with the standard cut lengths of rail, using in this range data input data display device as standard value a；
Step 2：Rail end detecting device measures the position numerical value x of rail sawing end end face in real time, and x is transferred to data presentation device by signal transmission line；
Step 3：X is added by data presentation device with standard value a and calibration parameter b, obtains rail length value y=x+a+b, and shows after the process of y value in real time in data presentation device；The initial value of wherein calibration parameter b is 0；
Step 4：Directly initiate sawing device when numerical value y is within cut-length of rails deviation range and carry out sawing；The real-time adjustment location of rail when numerical value y exceeds cut-length of rails deviation range, makes rail prepare the length at sawing end to sawing end within the scope of standard cut lengths requires, then starts sawing device and carry out rail sawing；
Step 5：When result of calculation y that actual cut lengths L of rail and data presentation device after sawing show differs, operating personnel set calibration parameter b on data presentation device, and the computational methods of parameter b are b=L-y；
Step 6：Repeat step 4 and step 5, complete the scale sawing of every rail.
A kind of measuring method of above-mentioned location-based rail length measuring system, in described step 1 and step 2, rail end detecting device includes being symmetrically arranged in rail and transports one group of infrared-emitting diode of roller-way both sides and one group of infrared receiving diode, the infrared ray of infrared-emitting diode and infrared receiving diode formation constitutes the detection interval of a horizontal plane,, in the center line of rail length direction, the vertical range that it is prepared near rail between the saw face at sawing end with sawing device is identical with the standard cut lengths of rail for this detection interval central axis.
The present invention is based on following principle：
In Rail Production, rail finished product two ends are required for sawing, the cut lengths of finished product has the different lengths such as 100m, 25m, 12.5m to require, rail is by after sawing first knife, rail motion is driven by roller-way and pinch roll, stopping in the position needing sawing to next knife, carries out the second knife saw and cut, to complete the rail sawing of cut lengths.For ease of description, in definition sawing process, one end of rail sawing is sawing end, and the other end is to prepare sawing end, and whether the position preparing sawing end accurately directly affects whether rail length meets standard requirement.For the rail of different cut lengths, its sawing end be known to preparing the standard cut lengths at sawing end, the position of sawing device is fixed, so the position at detection sawing end just can accurately detect the cut lengths of rail after sawing.
On the basis of based on above-mentioned principle, the present invention transports mounting rail end detecting device on the fixed support of roller-way both sides in rail, and so as to detection interval center line (Measuring field) is to sawing device, the vertical range between the saw face at rail preparation sawing end is identical with the standard cut lengths of rail；Rail end detecting device can achieve the accurate measurement of the rail physical location at sawing end, and measurement data is sent to the data presentation device being arranged on operating desk by wired or wireless signal transmission line；Data presentation device data after processing after data processing module is to Measurement and Data Processing is shown on data disaply moudle in real time, operating personnel are contrasted according to data after this process and cut lengths deviation range, the position of rail was adjusted according to comparing result before railroad sawing, thus realize will sawing cut-length of rails within the deviation that standard cut lengths allows it is ensured that rail length meet relevant criterion requirement.
The rail length value that in the data processing module of data presentation device of the present invention, plug-in can show to it is calibrated, when rail end detecting device by installing, the factor such as temperature change affected to cause the rail length value of display that deviation occurs when, operating personnel can be calibrated to the data that it exports by plug-in, periodically rail end detecting device is calibrated during also allowing for using simultaneously.
The invention has the beneficial effects as follows：
Measuring principle of the present invention is simply ingenious, and measuring system is easily realized；The hardware in rail length measuring system in the present invention is conventional electric device, with low cost, and the programme-control of its signal transmission and display can be simple by chip microcontroller；The practical application of the present invention does not affect original rail length measuring system of production line, have a style of one's own, achieve the accurate detection of rail length, data shows in real time, reliable and stable, the product quality problem that invar rail length causes can effectively be prevented, improve the qualification rate of product, good economic benefit can be created for enterprise.
Brief description
Fig. 1 is one embodiment schematic diagram of rail length measuring system of the present invention；
Fig. 2 is the measurement procedure figure of Fig. 1 embodiment rail length measuring system；
Fig. 3 is rail end detecting device data display device connecting communication schematic diagram；
In figure mark is as follows：Rail end detecting device 1, signal transmission line 2, data presentation device 3, fixed support 4, rail transport roller-way 5, sawing device 6, rail 7.
Specific embodiment
Fig. 1 and Fig. 3 shows, a kind of location-based rail length measuring system of the present invention includes sawing device 6, rail end detecting device 1, signal transmission line 2 data display device 3；Sawing device 6 install rail transport roller-way 5 by, including circular saw bit；Rail end detecting device 1 is installed on rail and transports on the fixed support 4 of roller-way 5 both sides, and includings data processing circuit and detecting element, detecting element is to be symmetrically arranged in rail transport one group of infrared-emitting diode of roller-way 5 both sides and one group of infrared receiving diode；The infrared ray of infrared-emitting diode and infrared receiving diode formation constitutes the detection interval of a horizontal plane,, in the center line of rail length direction, the vertical range that it is prepared near rail with sawing device between the saw face of circular saw at sawing end is identical with the standard cut lengths of rail for this detection interval central axis；Data presentation device 3 includes data processing module data display module, the data processing circuit of rail end detecting device 1 is connected with the data processing module of data presentation device 3 by signal transmission line 2, to realize the data communication between rail end detecting device 1 data display device 3.
Detecting element in rail end detecting device 1 of the present invention can also be the single-lens reflex testing equipment of application ultrasonic wave or laser distance measuring principle, for example：Ultrasonic position sensor, CCD position-detection sensor；Signal transmission line 2 can be Wireline or radiolink.
With reference to Fig. 2, a kind of measuring method of location-based rail length measuring system of the present invention, comprise the following steps：
Step 1：Transport mounting rail end detecting device 1 on the fixed support 4 of roller-way 5 both sides in rail, one group of infrared-emitting diode of detecting element and one group of infrared receiving diode is made to be symmetrically arranged in the both sides that rail transports roller-way 5, and make rail end detecting device 1 detection interval center line to sawing device 6 circular saw bit near rail 7 prepare sawing end one side between vertical range identical with the standard cut lengths of rail 7, using in this range data input data display device 3 as standard value a；
Step 2：Infrared-emitting diode in rail end detecting device 1 and infrared receiving diode measure the position numerical value x of rail 7 sawing end end face in real time, and are transferred to data presentation device 3 by signal transmission line 2 after x is processed by data processing circuit；
Step 3：Data presentation device 3 receives numerical value x, is added x with standard value a and calibration parameter b by its data processing module, obtains the length value y=x+a+b of rail 7, and shows after the process of y value in real time on the data disaply moudle of data presentation device 3；The initial value of wherein calibration parameter b is 0；
Step 4：Directly initiate sawing device 6 when numerical value y is within rail 7 cut lengths deviation range and carry out sawing；The position of real-time adjustment rail 7 when numerical value y exceeds rail 7 cut lengths deviation range, makes rail 7 prepare the length at sawing end to sawing end within the scope of standard cut lengths requires, then starts the sawing that sawing device 6 carries out rail 7；
Step 5：Actual cut lengths L with rail 7 after tape measure sawing, when result of calculation y of L and data presentation device 3 display differs, operating personnel set calibration parameter b by plug-in in the data processing module in data presentation device 3, and the computational methods of parameter b are b=L-y；
Step 6：Repeat step 4 and step 5, complete the scale sawing of every rail 7.
Specify in iron mark TB/T3276-2011：The tolerance of 100m rail is ± 30mm, below with standard cut lengths as 100m（a=100m）Rail as a example, linear measure longimetry is carried out using rail length measuring system of the present invention, to further understand the present invention：
Step 1：Rail end detecting device 1 is installed on rail and transports on the fixed support 4 of roller-way 5 both sides, one group of infrared-emitting diode of detecting element and one group of infrared receiving diode is made to be symmetrically arranged in the both sides that rail transports roller-way 5, and make the vertical range that rail end detecting device 1 detection interval center line prepares to the circular saw bit of sawing device 6 near rail 7 between the one side at sawing end be 100m, using in this range data 100.000 input data display device 3 as standard value a, i.e. a=100.000；
Step 2：Data presentation device 3 is arranged in the operating table surface of sawing device 6；
Step 3：The position numerical value x that infrared-emitting diode in rail end detecting device 1 and infrared receiving diode measure rail 7 sawing end end face in real time is 0.021m, after processing by data processing circuit, by signal transmission line 2, this numerical value x is transferred to data presentation device 3；
Step 4：Data presentation device 3 receives numerical value x, by its data processing module by x and standard value a and calibration parameter b（Initial value is 0）It is added, obtains the length value y=x+a+b=0.021+100.000+0=100.021m of rail 7, and show after the process of y value in real time on the data disaply moudle of data presentation device 3；
Step 5：Due to numerical value y=100.021m, in tolerance（99.970mm～100.030mm）Within, operating personnel can directly operate sawing device 6 to carry out sawing；
Step 6：With actual cut lengths L=100.011m after tape measure rail 7 sawing, different from y value 100.021m, need to calibrate；Now operating personnel set calibration parameter b by plug-in in the data processing module of data presentation device 3, and the computational methods of parameter b are b=L-y=100.011-100.021=-0.010；
Step 7：Operating personnel's repeat step 5 and step 6, complete the scale sawing of whole one steel rail 7.
Claims (5)
1. a kind of location-based rail length measuring system, including sawing device（6）It is characterised in that：It also includes rail end detecting device（1）, signal transmission line（2）Data display device（3）, rail end detecting device（1）It is installed on rail and transport roller-way（5）Both sides or one side fixed support（4）On, the detection interval center line of rail end detecting device is to sawing device（6）Near rail（7）Preparation sawing end saw face between vertical range and rail（7）Standard cut lengths identical；Rail end detecting device（1）By signal transmission line（2）With data presentation device（3）Connect.
2. as claimed in claim 1 a kind of location-based rail length measuring system it is characterised in that：Described rail end detecting device（1）Including detecting element data process circuit；Described data presentation device（3）Including data disaply moudle data processing module；Data processing circuit passes through signal transmission line（2）It is connected with data processing module.
3. as claimed in claim 2 a kind of location-based rail length measuring system it is characterised in that：Described detecting element is to be symmetrically arranged in rail to transport roller-way（5）The infrared ray that one group of infrared-emitting diode of both sides and one group of infrared receiving diode, infrared-emitting diode and infrared receiving diode are formed constitutes the detection interval of a horizontal plane, and the central axis of this detection interval are in rail（7）The center line of length direction, itself and sawing device（6）Near rail（7）Prepare the vertical range between the saw face at sawing end and rail（7）Standard cut lengths identical.
4. a kind of measuring method of location-based rail length measuring system it is characterised in that：It comprises the following steps：
Step 1：Mounting rail end detecting device（1）So as to detection interval center line is to sawing device（6）Near rail（7）Prepare the vertical range between the saw face at sawing end and rail（7）Standard cut lengths identical, by this range data input data display device（3）Middle as standard value a；
Step 2：Rail end detecting device（1）Measurement rail in real time（7）The position numerical value x of sawing end end face, and x is passed through signal transmission line（2）It is transferred to data presentation device（3）；
Step 3：Data presentation device（3）X is added with standard value a and calibration parameter b, obtains rail（7）Length value y=x+a+b, and by y value process after in data presentation device（3）Show in real time；The initial value of wherein calibration parameter b is 0；
Step 4：When numerical value y is in rail（7）Sawing device is directly initiated when within the deviation range of cut lengths（6）Carry out sawing；When numerical value y exceeds rail（7）Real-time adjustment rail during cut lengths deviation range（7）Position, make rail（7）The length preparing sawing end to sawing end, within the scope of standard cut lengths requires, then starts sawing device（6）Carry out rail（7）Sawing；
Step 5：Rail after sawing（7）Result of calculation y that shows of actual cut lengths L and data presentation device when differing, operating personnel are in data presentation device（3）Upper setting calibration parameter b, the computational methods of parameter b are b=L-y；
Step 6：Repeat step 4 and step 5, complete every rail（7）Scale sawing.
5. as claimed in claim 4 a kind of measuring method of location-based rail length measuring system it is characterised in that：Rail end detecting device in described step 1 and step 2（1）Transport roller-way including being symmetrically arranged in rail（5）The infrared ray that one group of infrared-emitting diode of both sides and one group of infrared receiving diode, infrared-emitting diode and infrared receiving diode are formed constitutes the detection interval of a horizontal plane, and the central axis of this detection interval are in rail（7）The center line of length direction, itself and sawing device（6）Near rail（7）Prepare the vertical range between the saw face at sawing end and rail（7）Standard cut lengths identical.
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| CN201610456036.XA CN106392187B (en) | 2016-06-22 | 2016-06-22 | A kind of measuring method of location-based rail length measuring system |
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| CN201610456036.XA CN106392187B (en) | 2016-06-22 | 2016-06-22 | A kind of measuring method of location-based rail length measuring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645896A (en) * | 2019-08-22 | 2020-01-03 | 四川建筑职业技术学院 | Strip steel fiber strip length measuring method and measuring device |
| CN114083051A (en) * | 2021-12-01 | 2022-02-25 | 太原科技大学 | Steel plate fixed-length shearing system and method based on line structured light |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0534111A (en) * | 1991-07-30 | 1993-02-09 | Nireco Corp | End part detecting apparatus |
| CN1307225A (en) * | 2000-01-26 | 2001-08-08 | 信息产业部电子第27研究所 | Measurement method by outomatic laser legnth measuring instrument |
| CN1769845A (en) * | 2005-07-01 | 2006-05-10 | 中国人民解放军国防科学技术大学 | Method for detecting position and speed of object moving along track |
| CN101033946A (en) * | 2007-04-24 | 2007-09-12 | 杭州浙大精益机电技术工程有限公司 | Device for measuring length of steel pipe |
| CN101236426A (en) * | 2007-02-01 | 2008-08-06 | Abb有限公司 | A method for creating an optimal cutting plan for a strip-like material |
| CN203426337U (en) * | 2013-08-20 | 2014-02-12 | 申海生 | Anchor line length fixing correcting device |
| CN204354199U (en) * | 2014-12-03 | 2015-05-27 | 昌吉市绿源塑料包装有限公司 | Can automatic Debugging material length equipment |
| CN105136040A (en) * | 2015-07-24 | 2015-12-09 | 衡阳镭目科技有限责任公司 | Method of measuring cut-length of continuous casting slab and device |
-
2016
- 2016-06-22 CN CN201610456036.XA patent/CN106392187B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0534111A (en) * | 1991-07-30 | 1993-02-09 | Nireco Corp | End part detecting apparatus |
| CN1307225A (en) * | 2000-01-26 | 2001-08-08 | 信息产业部电子第27研究所 | Measurement method by outomatic laser legnth measuring instrument |
| CN1769845A (en) * | 2005-07-01 | 2006-05-10 | 中国人民解放军国防科学技术大学 | Method for detecting position and speed of object moving along track |
| CN101236426A (en) * | 2007-02-01 | 2008-08-06 | Abb有限公司 | A method for creating an optimal cutting plan for a strip-like material |
| CN101033946A (en) * | 2007-04-24 | 2007-09-12 | 杭州浙大精益机电技术工程有限公司 | Device for measuring length of steel pipe |
| CN203426337U (en) * | 2013-08-20 | 2014-02-12 | 申海生 | Anchor line length fixing correcting device |
| CN204354199U (en) * | 2014-12-03 | 2015-05-27 | 昌吉市绿源塑料包装有限公司 | Can automatic Debugging material length equipment |
| CN105136040A (en) * | 2015-07-24 | 2015-12-09 | 衡阳镭目科技有限责任公司 | Method of measuring cut-length of continuous casting slab and device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645896A (en) * | 2019-08-22 | 2020-01-03 | 四川建筑职业技术学院 | Strip steel fiber strip length measuring method and measuring device |
| CN114083051A (en) * | 2021-12-01 | 2022-02-25 | 太原科技大学 | Steel plate fixed-length shearing system and method based on line structured light |
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| CN106392187B (en) | 2017-10-17 |
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