CN2510369Y - Dynamic measuring device for thickness of wheel rim - Google Patents
Dynamic measuring device for thickness of wheel rim Download PDFInfo
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- CN2510369Y CN2510369Y CN 01271141 CN01271141U CN2510369Y CN 2510369 Y CN2510369 Y CN 2510369Y CN 01271141 CN01271141 CN 01271141 CN 01271141 U CN01271141 U CN 01271141U CN 2510369 Y CN2510369 Y CN 2510369Y
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- thickness
- measurement
- wheel rim
- sensor
- wheel
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Abstract
The utility model discloses a wheel flange thickness dynamic measurement device which is used for on-line measurement of the wheel flange thickness during the movement. The device comprises a four-bar mechanism (1), a flange thickness measurement unit (2) and a signal processing unit (3). The four-bar mechanism (1) is fixed together with a rail (4) to form a parallelogram mechanism. The flange thickness measurement unit (2) is made up of sensors which are fixed on upper plate (5) of the four-bar mechanism. The signal processing unit mainly collects the data of the sensor and processes the data, and then obtains the wheel flange thickness or the variable quantity of the thickness. The measurement of the device has nothing to do with a plurality of factors such as velocity and weight of the train, quality of the rail and so on, which greatly increases the accuracy of the measurement and transfers the passive repair into the status repair.
Description
(1) technical field
The utility model relates to a kind of train wheel flange thickness measurement mechanism, is specially adapted to the flange thickness of the wheel in the motion is carried out on-line measurement.
(2) background technology
Wheel is the critical movements parts that are related to train operating safety, the precision of its physical dimension directly has influence on the cooperation of wheel track and the traffic safety of train, the wheel physical dimension is overproof, can influence the wheel track matching relationship when particularly flange thickness is overproof, cause derail, cause great train accident, so carry out wheel periodic inspection system in China.In other words, wheel must be delivered to car depot after a period of time or carshop overhauls in operation on the railway.The simple mechanical measurement utensil of the most of employing of the ways and means of existing inspection vehicle wheel rim thickness is as wheel the 3rd, the 4th detector.The major defect of these method of measurement and means is: efficiency of measurement is extremely low, and survey precision is low, and result of a measurement is subjected to the influence of survey crew big, can not satisfy the requirement of China railways development.The eighties in 20th century, China has carried out the research of wheel physical dimension self-measuring, its main principle of measurement is: wheel is propped up with carriage, and allow its rotation, measure various physical dimensions with multiple touch sensor, comprising flange thickness [Bai Fusheng, wheel is to the development and the application thereof of automatic detecting machine, " rolling stock technology ", 1997 the 6th phases], the major defect of this method of measurement is a contact type measurement, because wheel surface is irregular and coarse, the as easy as rolling off a log damage that causes touch sensor brings bigger problem to practical application.Simultaneously, this method can only be used for the self-measuring of workshop wheel diameters, can not be used in the on-line measurement of train movement process realization to the wheel geometric parameter.Along with the development of China's train technology, the improving constantly of train speed, the various abrasion of wheel, particularly wheeling edge wearing is accelerated significantly, and the mode of the various physical dimensions of periodic inspection wheel will no longer satisfy the needs of China railways development.Development wheel geometrical parameter dynamic measurement method, technology and equipment are realized the on-line measurement to the wheel geometric parameter in the train walking process, become passive repairing to state and repair, and can satisfy the needs of China railways fast development.In taking turns to the geometric parameter self-measuring, the most difficult measurement of flange thickness, wheel track cooperates and the traffic safety of vehicle and the wheeling edge wearing state is directly connected to.The research to the wheel geometrical parameter dynamic measurement abroad starts from the nineties, Russia, Japan, Germany, France, Romania, the U.S. etc. successively set up dissimilar dynamic measurement systems at present, can train low speed (＜when 8Km/h) exercising the crucial geometric parameter of wheel is carried out dynamic measurement, comprising measurement to flange thickness, its measured error is 0.2mm, and the speed of train is less than 8Km/h during measurement.Summary is got up, and the method for at present external dynamic measurement wheel geometric parameter has: 1) ultrasonic measurement is main, is equipped with other sensor; 2) special light sources combines with the CCD shooting; 3) disconnected rail adds [Malins such as optical measurement, the detection technique of wheel tread shape geometric parameter, " external railway vehicle ", 1998 the 6th phases: 40～42], [Romania, wheel profile abrasion automatic detection system, " external railway vehicle ", the 4th phase of nineteen ninety-five: 53～57], but the major defect of these method of measurement is the measuring mechanism complexity, gauge reference target is difficult for determining that the measurement mechanism that has need be transformed existing rail, should not promote the use of in China when measuring wheel rim.Domestic method and the technology of still not having the dynamic measurement flange thickness at present.
(3) summary of the invention
To be solved in the utility modelly be, provide a kind of survey precision high wheel rim measurer for thickness, and can realize that wheel variation to its flange thickness or thickness in advancing carries out dynamic measurement.
Wheel rim thickness dynamic measurement device is made of four-bar linkage, flange thickness measuring unit and signal processing unit.It is characterized in that: described four-bar linkage and rail are fixed together, and form a parallel-crank mechanism; Described flange thickness measuring unit is made of sensor, and this sensor is fixed on the upper flat plate of four-bar linkage.The data of the main pick-up transducers of signal processing unit, and data are handled, the variable quantity of wheel rim thickness or thickness obtained.
The beneficial effects of the utility model are: one, adopt four-bar linkage, and the sensor in the flange thickness measuring unit is fixed on the upper flat plate of parallelogram, the distance that sensor measurement is put the wheel rim summit is a standard value, identical with the benchmark of actual measurement flange thickness, simultaneously measurement point can not change because of the variation of wheel tread pattern, has avoided using method such as shooting to seek the measured error that gauge reference target is brought, and has improved the survey precision of flange thickness greatly; They are two years old, because flat board, pole etc. have formed parallel-crank mechanism with rail, make wheel rim thickness dynamic measurement device and rail form an integral body, irrelevant with the magnitude of vibrations of train, thereby it is irrelevant with many factors such as quality of the speed of train, weight, rail, overcome the shortcoming that result of a measurement in the existing method is subjected to these parameter influences, greatly improved the accuracy of measuring.
(4) description of drawings
Fig. 1 wheel rim thickness dynamic measurement device front view
Fig. 2 uses the wheel rim thickness dynamic measurement device lateral plan of optical fibre displacement sensor
Fig. 3 uses the wheel rim thickness dynamic measurement device partial view of laser displacement sensor
Fig. 4 uses the wheel rim thickness dynamic measurement device lateral plan of ultrasonic thickness measurement sensor
Among the figure: 1 is that four-bar linkage, 2 is that flange thickness measuring unit, 3 is that signal processing unit, 4 is that rail, 5 is that upper flat plate, 6 is that pole, 7 is a spring, 8,9 is that bearing, 10 is pressing plate, 11 is that wheel, 12 is displacement pickup, 13 is laser displacement sensor, and 14 is that ultrasonic thickness transducer, 15 is that catadioptre, 16 is mirror unit.
(5) specific embodiment
The utility model is described in further detail for the contrast accompanying drawing: wheel rim thickness dynamic measurement device (Fig. 1) is made of four-bar linkage 1, flange thickness measuring unit 2 and signal processing unit 3.
Described four-bar linkage is made up of upper flat plate 5, pole 6, rail 4, spring 7, bearing 8; The two ends of upper flat plate 5 are hinged with an end of two poles 6 respectively, and the other end of pole 6 is hinged with the bearing 8 that is fixed on the rail 4 respectively, and rail 4 becomes a limit of parallel-crank mechanism; One end of spring 7 links to each other with a certain pole 6 or dull and stereotyped 5, the other end of spring 7 links to each other with bearing 9 on being fixed on rail, the power of making progress for whole parallel-crank mechanism, make upper flat plate when train movement, contact with the wheel rim top of wheel 11 all the time, pressing plate 10 is fixed on the bearing 8, and the superior displacement that limits four-bar linkage is put.
The sensor 12 (Fig. 2) of described flange thickness measuring unit, adopt two optical fibre displacement sensors, this optical fibre displacement sensor is fixed on the last plane of four-bar linkage upper flat plate 5, and the distance of optical fibre displacement sensor measurement point from the last plane of flat board is 16mm.Reach wheel rim both sides respectively from the light of two optical fibre displacement sensors emission from wheel rim summit 16mm, the light of returning from this scattering reaches optical fibre displacement sensor once more, obtain the distance of each optical fibre displacement sensor thus respectively, obtain the variation of the thickness or the thickness of wheel rim thus to wheel rim one side 16mm place; The sensor of described flange thickness measuring unit, can also adopt two laser displacement sensors 13 (Fig. 3), one of this laser displacement sensor 13 is fixed on the last plane of four-bar linkage upper plate 5, the distance of laser displacement sensor 13 measurement points from the last plane of flat board is 16mm, another laser displacement sensor is fixed on the dull and stereotyped lower plane, the light that sends passes the hole of upper flat plate 5, and laser measurement is got on the measurement point of wheel rim through catadioptre 15, catadioptre 15 is fixed together with mirror unit 16, and is fixed together by screw thread or other connection modes and upper flat plate 5.According to the similar principle of measurement of optical fibre displacement sensor, the thickness of wheel rim or the variation of thickness when these two laser displacement sensors can be measured wheel by upper flat plate 5; The sensor of described flange thickness measuring unit also can adopt ultrasonic thickness transducer 14.Ultrasonic thickness transducer 14 ultrasonic waves transmitted are coupled on the wheel rim by water column or other liquid during measurement, directly measure the thickness of 16mm place wheel rim.
Principle of measurement of the present utility model is summarized as follows: when the wheel rim of wheel 11 of motion is pressed on the upper flat plate 5 of parallel-crank mechanism 1, make upper flat plate 5 translations, when wheel movement, dull and stereotyped therewith all the time 5 contacts of the wheel rim of this wheel 11, optical fibre displacement sensor in the flange thickness measuring unit or laser displacement sensor or ultrasonic thickness sensor, can measure the variable quantity of the flange thickness at above 16mm place, wheel rim summit, by comparison measurement or demarcation in advance, can obtain gauge or its variable quantity of wheel rim.
In the above-mentioned measurement scheme that the utility model proposes, the measuring surface of parallel-crank mechanism upper flat plate and the collimation of rail surface guarantee by artificial adjustment.
The sensitivity of this measurement device wheel rim variation in thickness is 0.05mm, and measured error is less than 0.2mm.The flange thickness of all existing dissimilar wheels of energy measurement, measurement mechanism speed-adaptive scope is 0-30 kmh
-1, applicable to realizing on the line, the flange thickness of all wheels is carried out on-line measurement under the train low cruise condition; Also applicable in the workshop, the flange thickness of single wheel is carried out dynamic measurement.
The utility model can also adopt the parallel-crank mechanism parallel-crank mechanism of round guide groove (as have) of other form to replace above parallel-crank mechanism, can obtain identical effect, but structure is comparatively complicated; Parallel-crank mechanism can adopt other force application mechanism (as hydraulic pressure) to replace spring, or adopts the superior displacement of other forms of restriction four-bar linkage to put, and does not change the character of measurement, can obtain similar result; The articulated manner of the pole of parallel-crank mechanism and flat board and pole and bearing can replace the bearing hinge connection mode with the articulated manner (as the running-fit between axle and the hole) of other form, can play identical effect; In four-bar linkage, can adopt pull bar to replace pressing plate to limit the four-bar linkage position, can get same effect.
Claims (4)
1. wheel rim thickness dynamic measurement device, this device comprises: four-bar linkage (1), flange thickness measuring unit (2) and signal processing unit (3), it is characterized in that: described four-bar linkage (1) is fixed together with rail (4), forms a parallel-crank mechanism; Described flange thickness measuring unit (2) is made of sensor (12), and this sensor is fixed on the upper flat plate (5) of four-bar linkage.
2. wheel rim thickness dynamic measurement device according to claim 1, it is characterized in that: the sensor (12) of described flange thickness measuring unit (2) adopts two optical fibre displacement sensors, this optical fibre displacement sensor is fixed on the upper flat plate (5) of four-bar linkage, and the distance of optical fibre displacement sensor measurement point from the last plane of upper flat plate (5) is 16mm.
3. wheel rim thickness dynamic measurement device according to claim 1, it is characterized in that: the sensor (12) of described flange thickness measuring unit (2), can also adopt two laser displacement sensors (13), this laser displacement sensor (13) is fixed on the upper flat plate (5) of four-bar linkage, and the distance of laser displacement sensor (13) measurement point from the last plane of flat board is 16mm.
4. wheel rim thickness dynamic measurement device according to claim 1, it is characterized in that: the sensor (12) of described flange thickness measuring unit (2), also can adopt ultrasonic thickness transducer (14), ultrasonic thickness transducer (14) ultrasonic waves transmitted is coupled on the wheel rim by water column or other liquid, directly measures the thickness of 16mm place wheel rim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01271141 CN2510369Y (en) | 2001-11-21 | 2001-11-21 | Dynamic measuring device for thickness of wheel rim |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01271141 CN2510369Y (en) | 2001-11-21 | 2001-11-21 | Dynamic measuring device for thickness of wheel rim |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2510369Y true CN2510369Y (en) | 2002-09-11 |
Family
ID=33676634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01271141 Expired - Fee Related CN2510369Y (en) | 2001-11-21 | 2001-11-21 | Dynamic measuring device for thickness of wheel rim |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2510369Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108891444A (en) * | 2018-06-27 | 2018-11-27 | 马鞍山市雷狮轨道交通装备有限公司 | A kind of device and method of on-line dynamic measurement train wheel geometric parameter |
| CN109017871A (en) * | 2018-06-27 | 2018-12-18 | 马鞍山市雷狮轨道交通装备有限公司 | A kind of device and method of on-line dynamic measurement train wheel geometric parameter |
| CN115790399A (en) * | 2023-01-13 | 2023-03-14 | 北京航天计量测试技术研究所 | Warhead length measuring method based on double displacement sensors |
-
2001
- 2001-11-21 CN CN 01271141 patent/CN2510369Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108891444A (en) * | 2018-06-27 | 2018-11-27 | 马鞍山市雷狮轨道交通装备有限公司 | A kind of device and method of on-line dynamic measurement train wheel geometric parameter |
| CN109017871A (en) * | 2018-06-27 | 2018-12-18 | 马鞍山市雷狮轨道交通装备有限公司 | A kind of device and method of on-line dynamic measurement train wheel geometric parameter |
| CN109017871B (en) * | 2018-06-27 | 2020-12-25 | 马鞍山市雷狮轨道交通装备有限公司 | Device and method for dynamically measuring geometric parameters of train wheels on line |
| CN115790399A (en) * | 2023-01-13 | 2023-03-14 | 北京航天计量测试技术研究所 | Warhead length measuring method based on double displacement sensors |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |