CN103163313B - A kind of drive method of locomotive shaft-end speed pickup - Google Patents
A kind of drive method of locomotive shaft-end speed pickup Download PDFInfo
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- CN103163313B CN103163313B CN201310028580.0A CN201310028580A CN103163313B CN 103163313 B CN103163313 B CN 103163313B CN 201310028580 A CN201310028580 A CN 201310028580A CN 103163313 B CN103163313 B CN 103163313B
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Abstract
The present invention is a kind of drive method of locomotive shaft-end speed pickup.Use the floating transmission principle reducing constraint degree of freedom, adopt Structure deformation friction-reducing measures, with transmission fork, adhesive magnet ring and roller sleeve transmission deflector rod structure, realize the reliable drive method under two degree of freedom larger amount of floating conditions and device.Comprise: transmission fork, adhesive magnet ring, transmission driving lever, roller sleeve, sensor axis, sensor.Transmission fork to be connected with locomotive shaft-end by fork handle and adhesive magnet ring and to move with locomotive axle, and the transmission driving lever of suit roller sleeve is arranged on the end of sensor axis and embeds in the shell-like fork lobe of transmission fork, is driven rotate with locomotive axle by transmission fork.Thus under the condition of high-power locomotive axle relative body generation axial float and diameter run-out, by the velocity of rotation reliable delivery of locomotive axle to sensor axis.Have employed three sections of coaxial structures in the sensor simultaneously, effectively improve running accuracy.
Description
Technical field
The present invention is a kind of drive method being applied to railway locomotive axle head light electricity velocity sensor.The electric power using axle head light electricity velocity sensor can be widely used in, the various vehicles of diesel locomotive with the locomotive shaft-end light electricity velocity sensor that the method and device are formed.Also applicability is widely had to the locomotive of various speed series and the high-speed railway locomotive that comes into operation at present.
Background technology
At present, Shaoshan series that China railways system is using and the Harmony various electric locomotive of series and the various diesel locomotive of Dongfeng series, in order to detect and effectively control the right rotating speed of locomotive power wheel, play maximum drive usefulness, generally at wheel, axle head light electricity velocity sensor is installed and used to axle head.Along with the raising of train running speed and security requirement, more and more higher requirement is proposed to axle head speed pickup reliability and serviceable life.
The problems such as it is weak that the axle head light electricity velocity sensor come into operation at present still exists reliability, and serviceable life is low, and maintenance and repair workload is large, and rate signal accuracy of detection is not enough.By the structure analysis to current axle head light electricity velocity sensor product, with known with research to a large amount of maintenance sensor fault phenomenon statistics, the main cause of current axle head speed pickup poor reliability is: the life-span of gear train and device is lower, damage amount is large, transmission is unreliable, and signal transmission precision is not enough.The present invention is exactly a kind of drive method of locomotive shaft-end speed pickup.
Summary of the invention
The object of this invention is to provide a kind of drive method of locomotive shaft-end speed pickup, the present invention is a kind of floating transmission principle using minimizing constraint degree of freedom, adopt Structure deformation friction-reducing measures, with transmission fork, adhesive magnet ring and roller transmission deflector rod structure, realize there is larger axis to the reliable drive method under play and radial beat eccentricity condition and device at locomotive axle.Comprise: transmission fork, adhesive magnet ring, transmission driving lever, roller sleeve, sensor axis, sensor.By adhesive magnet ring, see 2 in Fig. 2, and transmission fork handle is by transmission fork, sees 3 in Fig. 2, be connected with locomotive shaft-end, and by locomotive axle, see 1 in Fig. 2, velocity of rotation by with the transmission driving lever of roller sleeve, see 5 in Fig. 2, pass to sensor axis, see 6 in Fig. 2.Thus under the condition of high-power locomotive axle relative body generation axial float and diameter run-out, the velocity of rotation of locomotive axle is passed to sensor axis by reliable realization.Have employed the rotating shaft of three sections of concentric structures simultaneously in the sensor, effectively improve the running accuracy of sensor axis and code-disc.According to the drive method of a kind of locomotive shaft-end speed pickup of the present invention, transmission fork to be connected with locomotive shaft-end by fork handle and adhesive magnet ring and to move with locomotive axle, transmission driving lever is arranged on the end of sensor axis and embeds in the shell-like fork lobe of transmission fork, driven by transmission fork and rotate with locomotive axle, the rotating speed of locomotive axle is passed to sensor, the rotation of locomotive axle, with while locomotive axle generation axial float and diameter run-out, still can be passed to the sensor axis that can only rotate by transmission fork.After installing, sensor axis is not directly connected with locomotive axle, therefore locomotive shaft run-out only makes, between transmission fork and transmission driving lever, relative radial motion occurs, the axial float of locomotive axle only makes the relative transmission driving lever of transmission fork occur to slide to axial, transmission driving lever embeds among the fork lobe of transmission fork, can not mutually depart from rotation, therefore can by the rotation reliable delivery of locomotive axle to sensor axis.According to the present invention, transmission fork is pitched lobe by square section fork handle, circular forked standard and shell-like and is formed, and is connected, circular forked standard arranges ring-type concave station face in the square hole of the fork handle loading locomotive shaft-end of transmission fork with locomotive shaft-end, in order to load and fixing adhesive magnet ring, transmission fork entirety is manufactured by steel.According to the present invention, use the floating transmission principle reducing constraint degree of freedom, the shell-like fork lobe of transmission fork leaves enough diameter run-out spaces between internal diameter and sensor axis, the shell-like fork lobe of transmission fork leaves enough axially-movable spaces at length direction to transmission driving lever, the space of more than 24mm is left between transmission fork end face and sensor bearing lid, fork lobe number is 4, and leaves large radius arc chamfering at prong place, so that transmission driving lever loads smoothly.According to the present invention, adhesive magnet ring is made up of ndfeb magnetic material, is arranged in the ring-type concave station face of transmission forked standard, and height is concordant with transmission fork table top, by magnet ring, transmission fork and locomotive axle is carried out axial adhesive and is connected.According to the present invention, transmission driving lever diameter is less than sensor axis, and be that crosswise is installed and is connected by a radial hole and sensor axis end, and the length of transmission driving lever is greater than transmission fork and is set with the external diameter pitching lobe, and leaves the pre-allowance of enough diameter run-outs.According to the present invention, adopt Structure deformation friction-reducing measures, transmission driving lever is set with roller sleeve outward, forms the transmission driving lever with antifriction roller cover, the friction that slides axially between transmission fork and transmission driving lever is become rolling friction.According to the present invention, sensor axis and code-disc pivot flange are divided into two parts, be installed together with being threaded, do not make integrative-structure, code-disc bearing journal and bearing installation shaft neck grease are machined in a grinding, ensure the coaxial precision of three axle journals, reduce the radial beat eccentricity that code-disc rotates.According to the present invention, code-disc pivot flange end face arranges concave station face, ensure that the axial location of code-disc is on code-disc bearing journal.According to the drive method of a kind of locomotive shaft-end speed pickup of the present invention compared with the drive method of existing sensor, there is following advantage: one is reliable transmission, will, because of factors such as locomotive vibrations, cause the speed transmission between locomotive axle and sensor to interrupt; Two is that the life-span is long, because transmission driving lever overcoat has roller sleeve, changes sliding friction into rolling friction, decreases the wearing and tearing between relative motion part.Three is that speed transmitting accuracy is high.Under the condition that at locomotive axle relative sensors axle, larger diameter run-out and axial float can occur, reliable transmission rotary speed information.
Accompanying drawing explanation
Accompanying drawing illustrates concrete principle of the present invention and structure in conjunction with embodiment:
Accompanying drawing is sectional view and the part diagram of example device of the present invention.Number in the figure indicates parts.
Wherein:
Fig. 1 is the installation cut-open view of gearing.Wherein 1 is locomotive axle, and 2 is adhesive magnet rings, and 3 is transmission forks, and 4 is roller sleeve, and 5 is transmission driving levers, and 6 is sensor axis, and 7 is sensors.
Fig. 2 is that cut-open view installed by gearing and sensor.Wherein 1 is locomotive axle, and 2 is adhesive magnet rings, and 3 is transmission forks, and 4 is roller sleeve; 5 is transmission driving levers, and 6 is sensor axis, and 8 is Locomotive Bearing case lids, and 9 is cable protection bell and spigot joints; 10 is bearing glands, and 11 is sensor body, and 12 is linings, and 13 is code-disc support flanges; 14 is code-discs, and 15 is code-disc glands, and 16 is code-disc gland screws, and 17 is sender unit caps; 18 is photoelectric conversion modules, and 19 is bearings, and 20 is bearing nuts, and 21 is O-ring seals; 22 is split pins, and 23 is nuts, and 24 is transmission fork handle reeds.Fig. 3 is the part drawing of transmission fork structure.Fig. 4 is transmission driving lever component diagram.Fig. 5 is sensor axis part drawing.Fig. 6 is the mounting structure enlarged drawing of sensor axis, code-disc support flange, code-disc, code-disc gland.Fig. 7 is transmission fork and erecting tools figure.
Embodiment
With reference to accompanying drawing, illustrate a kind of embodiment of drive method of locomotive shaft-end speed pickup, the present invention uses the floating transmission principle reducing constraint degree of freedom, adopt Structure deformation friction-reducing measures, with transmission fork, adhesive magnet ring and transmission deflector rod structure, realize the method and apparatus of the high reliability transmission under two larger amount of floating conditions of degree of freedom.Comprise: transmission fork, adhesive magnet ring, transmission driving lever, roller sleeve, sensor axis, sensor.Transmission fork, is shown in 3 in Fig. 2, by adhesive magnet ring, sees 2 in Fig. 2, with transmission fork handle, transmission fork is connected with locomotive shaft-end, and by locomotive axle, sees 1 in Fig. 2, velocity of rotation have the transmission driving lever of roller sleeve by cover, see 5 in Fig. 2, pass to sensor axis, see 6 in Fig. 2.Thus under the condition of high-power locomotive axle relative body generation axial float and diameter run-out, the velocity of rotation of locomotive axle is passed to sensor axis by reliable realization.
The transmission fork concrete structure of embodiment is shown in Fig. 2 and Fig. 3, by fork handle, and circular forked standard and shell-like fork lobe composition.The cross section of fork handle is square, and surface arranges groove, in fork handle groove, install springs.Transmission fork is loaded in the square hole of locomotive shaft-end by fork handle, and is contacted with the square hole of locomotive shaft-end by the one group of springs be contained on transmission fork handle, and guarantee transmission fork center line and locomotive axle center line keep concentric and parallel substantially.And the circular forked standard of transmission fork arranges ring-type concave station face, the adhesive magnet ring that in-built ndfeb magnetic material makes, because transmission fork and locomotive axle are by black non-ferrous metal manufactures such as steel, so just transmission fork and locomotive shaft-end can be carried out reliably axially being connected by this adhesive magnet ring.Therefore the transmission fork after installing moves with locomotive axle.The shell-like fork lobe of transmission fork has 4 shift fork notches on circle cover, forms transmission fork lobe.And do not put the uncovered of larger chamfering radius at opening part, so that when sensor is installed, roller sleeve and transmission driving lever enter transmission fork notch smoothly.When speed pickup loads the bearing box cover of locomotive shaft-end, the roller sleeve of sensor and transmission driving lever just embed the notch of transmission fork lobe.When locomotive axle rotates, drive transmission driving lever and speed pickup axle with the synchronized rotation of locomotive axle by the notch of transmission fork lobe.Owing to all leaving enough spaces, so when locomotive axle drives the motion of transmission fork axial float, roller sleeve and transmission driving lever just relative transmission fork axially move in notch at transmission fork internal diameter direction and suit fork lobe notch length direction.Equally, when locomotive axle has diameter run-out campaign, roller sleeve and transmission driving lever just relative transmission fork do radial motion.The maximum outside diameter of transmission fork must be less than the sensor mounting hole footpath of Locomotive Bearing case lid, to ensure that transmission fork loads.The external diameter at transmission fork cover fork lobe place is 34mm, and internal diameter is 26mm, and between internal diameter and sensor axis, radial space is not less than 6mm, ensures radial floating amount.The notch length of transmission fork lobe should be greater than more than two times of the maximum axial shifting amount (being about 20mm) of locomotive axle, ensures that locomotive axle still can drive roller transmission driving lever reliable delivery to rotate when maximum axial play position.General axis to unidirectional floating space be not less than 20mm.For ensureing that locomotive axle transmission fork when axial float does not interfere with sensor, the space of more than 24mm between transmission fork end face and sensor bearing lid, should be left.Load locomotive shaft-end for ease of transmission fork smoothly from bearing cap bore, in transmission fork, leave installation threaded hole, with the threaded erecting tools of end belt, just transmission fork can be loaded smoothly or remove.
The adhesive magnet ring of embodiment is made up of ndfeb magnetic material, and thickness is not less than 4mm, is arranged in the ring-type concave station face of transmission forked standard, by fixed radial position, ring-type concave station face.Adhesive magnet ring is highly concordant with circular forked standard table top after installing, and the circular forked standard of transmission fork and locomotive axle end face is fitted, ensures axial adhesive strength of joint.
Fig. 2 and Fig. 4 be shown in by the transmission driving lever of embodiment, is an axial workpiece.It is equipped with the identical antifriction roller cover of two sections of geomeries with clearance fit.Roller sleeve, see 4 in Fig. 4, can rotate relative to transmission driving lever, the effect of roller sleeve is that the sliding friction between transmission driving lever and transmission fork is transformed into rolling friction, thus ensure when axial relative motion occurs locomotive axle, be rolling friction state between transmission fork lobe notch and transmission driving lever, ensure the dirigibility of motion, improve transmission life and reliability.Transmission driving lever clearance fit is arranged in the radial hole of sensor axis left part, forms crosswise drive mechanism.The length of transmission driving lever is greater than the external diameter of transmission fork suit fork lobe, and leaves the pre-allowance of enough diameter run-outs.The length of transmission driving lever is 54mm, is greater than transmission fork shell-like fork lobe external diameter 20mm, and when ensureing that locomotive axle has a 8mm radial beat eccentricity, transmission fork still can reliable delivery rotate.One end of transmission driving lever is the male flange structure being with flat side, in order to limit the axial location of roller sleeve pipe.The other end of transmission driving lever is helicitic texture, installs nut, sees 23 in Fig. 4, and construction opening pin nut and split pin after loading roller sleeve pipe, be shown in 22 in Fig. 4, ensures reliably to fix, prevent self falling in work.
In embodiment device busy process, transmission fork, transmission driving lever, roller sleeve, sensor axis etc. have the position of relative motion, adopt railway grease to carry out effectively lubricating.
In this embodiment, due to photoelectric code disk, see 14 in Fig. 2, grid be sewn on the manufacture of code-disc radial direction, radially arrange, thus code-disc rotate time radial beat eccentricity very large on the impact of tach signal precision.For ensureing the rotation precision of sensor axis, reduce code-disc diameter run-out, sensor axis is designed to the structure of Fig. 5, both the bearing journal of code-disc was arranged to special construction, see Fig. 6, the code-disc pivot flange of code-disc axial location is installed by engagement thread in addition, so just can be in the fabrication process, the two bearings mounted axle journals in place of sensor axis and an axle journal work in-process grinding of installing code-disc are completed, ensures the right alignment of three diameters of axle.And on code-disc pivot flange, concave station face is set, see Fig. 6, code-disc pivot flange can be made to install after to the axial support surface position of code-disc within the code-disc of sensor axis supports axle journal, ensure the reliability of the radial and axial supporting and location of code-disc.
The bearing of this embodiment sensor, is shown in 19 in Fig. 2, adopts double-deck bearing nut, sees 20 in Fig. 2, carry out axis and install fixing, and bearing nut adjusts bearing clearance thus.
Embodiment device is prevent the pollutant in Locomotive Bearing case from entering sensor, sensor axis pressure cap, see 10 in Fig. 2, inner sealing be made up of two-layer O-ring seal, outside is malthoid class dust-proof seal ring, inside is band spring rubber seal, sees 21 in Fig. 2, ensures the clean of sensor internal.
The sensor of embodiment is installed at locomotive shaft-end and is carried out in two steps, first by special installation tool, see 25 in Fig. 7, screw portion screw in transmission fork, and with erecting tools, transmission fork handle is loaded in the square hole of locomotive shaft-end, fit at guarantee transmission fork seat surface and locomotive axle end face, after the effective adhesive of adhesive magnet ring, erecting tools is screwed out.Then sensor body is loaded the sensor mounting hole that Locomotive Bearing covers, note transmission driving lever to aim at transmission fork lobe notch, and fix with four bolts.
Claims (7)
1. the drive method of a locomotive shaft-end speed pickup, comprise: transmission fork, adhesive magnet ring, transmission driving lever, roller sleeve, sensor axis, sensor, it is characterized in that, transmission fork to be connected with locomotive shaft-end by fork handle and adhesive magnet ring and to move with locomotive axle, transmission driving lever is arranged on the end of sensor axis and embeds in the shell-like fork lobe of transmission fork, driven by transmission fork and rotate with locomotive axle, adopt Structure deformation friction-reducing measures, transmission driving lever is set with roller sleeve outward, form the transmission driving lever with antifriction roller cover, sliding friction between transmission fork and transmission driving lever is become rolling friction, use the floating transmission principle reducing constraint degree of freedom, the shell-like fork lobe of transmission fork leaves enough diameter run-out spaces between internal diameter and sensor axis, the shell-like fork lobe of transmission fork leaves enough axially-movable spaces at length direction to transmission driving lever, enough spaces are left between transmission fork and sensor, transmission fork is with while locomotive axle generation axial float and diameter run-out, still the rotation of locomotive axle can be passed to the sensor axis that can only rotate.
2. the drive method of a kind of locomotive shaft-end speed pickup as claimed in claim 1, it is characterized in that, transmission fork is pitched lobe by square section fork handle, circular forked standard and shell-like and is formed, be connected with locomotive shaft-end in the square hole of the fork handle loading locomotive shaft-end of transmission fork, circular forked standard arranges ring-type concave station face, in order to load and fixing adhesive magnet ring, inside arranges installation screw, and transmission fork entirety is manufactured by steel.
3. the drive method of a kind of locomotive shaft-end speed pickup as claimed in claim 1, is characterized in that, the fork lobe number of shell-like fork lobe is 4, and leaves large radius arc chamfering at prong place, so that transmission driving lever loads smoothly.
4. the drive method of a kind of locomotive shaft-end speed pickup as claimed in claim 2, it is characterized in that, adhesive magnet ring is made up of ndfeb magnetic material, be arranged in the ring-type concave station face of the circular forked standard of transmission fork, height is concordant with the table top of circular forked standard, by adhesive magnet ring, transmission fork and locomotive axle is carried out axial adhesive and is connected.
5. the drive method of a kind of locomotive shaft-end speed pickup as claimed in claim 1, it is characterized in that, transmission driving lever diameter is less than sensor axis, and be that crosswise is installed and is connected by a radial hole and sensor axis end, the length of transmission driving lever is greater than the external diameter of transmission fork shell-like fork lobe, opens and leaves the pre-allowance of enough diameter run-outs.
6. the drive method of a kind of locomotive shaft-end speed pickup as claimed in claim 1, it is characterized in that, sensor axis and code-disc pivot flange are divided into two parts, be installed together with being threaded, do not make integrative-structure, code-disc bearing journal and the grinding of bearing installation shaft neck grease work in-process are completed, ensures the coaxial precision of three axle journals, reduce the radial beat eccentricity that code-disc rotates.
7. the drive method of a kind of locomotive shaft-end speed pickup as claimed in claim 6, is characterized in that, code-disc pivot flange is arranged concave station face, ensures that the axial location of code-disc is on code-disc bearing journal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310028580.0A CN103163313B (en) | 2013-01-16 | 2013-01-16 | A kind of drive method of locomotive shaft-end speed pickup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310028580.0A CN103163313B (en) | 2013-01-16 | 2013-01-16 | A kind of drive method of locomotive shaft-end speed pickup |
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| Publication Number | Publication Date |
|---|---|
| CN103163313A CN103163313A (en) | 2013-06-19 |
| CN103163313B true CN103163313B (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310028580.0A Expired - Fee Related CN103163313B (en) | 2013-01-16 | 2013-01-16 | A kind of drive method of locomotive shaft-end speed pickup |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103661470B (en) * | 2013-12-12 | 2016-08-03 | 中车北京二七机车有限公司 | Bogies for railway vehicles and rolling stock |
| CN104897094A (en) * | 2014-03-05 | 2015-09-09 | 鞍钢股份有限公司 | Large-scale motor axial endplay detection device and method |
| CN105136189B (en) * | 2014-06-03 | 2017-08-25 | 机科发展科技股份有限公司 | Safe antenna |
| CN106218321B (en) * | 2016-07-16 | 2018-08-31 | 宁波中车时代传感技术有限公司 | The locomotive shaft-end structure of six channel Hall revolution speed transducers can be installed additional |
| CN113376396B (en) * | 2021-07-05 | 2024-04-16 | 宁波中车时代传感技术有限公司 | Shaft end photoelectric speed sensor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201078755Y (en) * | 2007-04-18 | 2008-06-25 | 长沙南车电气设备有限公司 | Optoelectronic revolution speed transducer |
| CN201110860Y (en) * | 2007-12-25 | 2008-09-03 | 长沙南车电气设备有限公司 | High speed photoelectric rotating speed sensor |
| CN201262197Y (en) * | 2008-08-18 | 2009-06-24 | 石宝枢 | Three articulated bearing type gimbal joint |
-
2013
- 2013-01-16 CN CN201310028580.0A patent/CN103163313B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201078755Y (en) * | 2007-04-18 | 2008-06-25 | 长沙南车电气设备有限公司 | Optoelectronic revolution speed transducer |
| CN201110860Y (en) * | 2007-12-25 | 2008-09-03 | 长沙南车电气设备有限公司 | High speed photoelectric rotating speed sensor |
| CN201262197Y (en) * | 2008-08-18 | 2009-06-24 | 石宝枢 | Three articulated bearing type gimbal joint |
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| CN103163313A (en) | 2013-06-19 |
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