CN202661476U - Velocity sensor and traction motor rotor velocity measuring system - Google Patents
Velocity sensor and traction motor rotor velocity measuring system Download PDFInfo
- Publication number
- CN202661476U CN202661476U CN 201220168617 CN201220168617U CN202661476U CN 202661476 U CN202661476 U CN 202661476U CN 201220168617 CN201220168617 CN 201220168617 CN 201220168617 U CN201220168617 U CN 201220168617U CN 202661476 U CN202661476 U CN 202661476U
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- CN
- China
- Prior art keywords
- speed pickup
- transmission cable
- circuit board
- printed circuit
- shell
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model provides a velocity sensor, comprising a probe assembly, an elbow housing and a transmission cable, wherein the probe assembly comprises a printed circuit board, a positioning element and two hall components; the elbow housing comprises a housing head and a housing tail sleeve both of bent structure; the probe assembly is mounted on the housing head; the transmission cable penetrates through the elbow housing; and one end of the transmission cable is welded with the printed circuit board of the probe assembly, while the other end thereof extends to the outside of the elbow housing. The utility model also provides a traction motor rotor velocity measuring system employing the velocity sensor. The velocity sensor provided by the utility model is simple and reliable in structure and the contour dimension thereof is capable of meeting the mounting dimension requirement of the locomotive traction motor; and the traction motor rotor velocity measuring system employing the velocity sensor has high sensing sensitivity.
Description
Technical field
The utility model belongs to the traction electric machine rotor field of testing the speed, and relates in particular to a kind of speed pickup and a kind of traction electric machine rotor velocity-measuring system.
Background technology
On the rail vehicle, precision and the reliability of the rate signal that it collects depended in the control of automotive power to a great extent, and the rate signal that gathers comprises the variable quantity of present speed value and speed.All will relate to the acquisition problems of rate signal in the traction control of locomotive, wheel slip protection, Train Control, car door control procedure, it generally is to finish by many speed pickups.
At present the most frequently used speed pickup type is Hall-type binary channels speed pickup, and its principle is: the difference speed pickup cooperates with gear and is applicable to produce the two-way square-wave signal that is shifted, and produced simultaneously pulsed frequency is directly proportional with the gear rotational speed.Its sensing element is two magnetic bias Hall components and parts, joins with amplifier and short-circuit protection line driver.The structure of speed pickup commonly used as shown in Figure 1 at present, generally be to adopt to be 180 ° of angle design between their metal shell probe and the tail cover, metal shell is easy to processing on the one hand, has the design maximum space, also is beneficial to the installation between printed circuit board (PCB) and the transmission cable.And the traction electric machine of light rail locomotive because the down suction is less between its electric motor end cap and the bearing (ball) cover, adopts the speed pickup profile installation dimension of 180 ° of angle designs can't satisfy its installation requirement.
The utility model content
The utility model has solved prior art medium velocity sensor can not be applicable to the technical matters that the locomotive traction motor installation dimension requires.
The utility model provides a kind of speed pickup, comprises probe assembly, elbow shell and transmission cable; Described probe assembly comprises printed circuit board (PCB), keeper and 2 Hall components and parts; One end of described keeper is by slot and printed circuit board (PCB) clamping, and the other end is by connecting hole and the clamping of 2 Hall components and parts, and the metal pin of 2 Hall components and parts passes keeper and printed circuit board (PCB) welding;
Described elbow shell comprises case head and the shell tail cover of bending structure, and probe assembly is installed on case head, and transmission cable is arranged in the elbow shell; One end of transmission cable and the welding of the printed circuit board of probe assembly, the other end extends to the elbow housing exterior.
As further improvement of the utility model, the become one chip of structure of described Hall components and parts and magnet.
As further improvement of the utility model, the bending angle between case head and the shell tail cover is 90 °.
As further improvement of the utility model, be equipped with the hole for injecting glue for encapsulating between the inwall of the outer wall of described printed circuit board (PCB) and elbow shell and between the inwall of the outer wall of keeper and elbow shell.
As further improvement of the utility model, be filled with insulating heat-conductive glue by hole for injecting glue in the elbow shell.
As further improvement of the utility model, the heart yearn of described transmission cable is positioned at the center of elbow shell.
The utility model also provides a kind of traction electric machine rotor velocity-measuring system, comprises and the hard-wired speed pickup of locomotive traction motor; Wherein, the speed pickup that described speed pickup provides for the utility model, the case head of described speed pickup is alignd with the gear centre of locomotive traction motor.
The speed pickup that the utility model provides, simple and reliable for structure, have in addition the sensor outer housing of bending structure by employing, so that the physical dimension of the speed pickup that the utility model provides can satisfy the installation dimension requirement of light rail locomotive traction motor.
The traction electric machine rotor velocity-measuring system that the utility model provides by the speed pickup that adopts the utility model to provide, guarantees that simultaneously case head aligns the induction sensitivity of energy Effective Raise product with the gear centre of locomotive traction motor.
Description of drawings
The structural representation of the speed pickup that Fig. 1 provides for prior art.
The structural representation of the speed pickup that Fig. 2 provides for the utility model.
The structural representation of elbow shell in the speed pickup that Fig. 3 provides for the utility model.
The structural representation of the speed pickup housing tail cable that Fig. 4 provides for the utility model and stainless steel fixing sleeve, copper fixing sleeve.
The traction electric machine rotor velocity-measuring system structural representation that Fig. 5 provides for the utility model.
Wherein, 1---the Hall components and parts, 2---keeper, 3---printed circuit board (PCB), 4---hole for injecting glue, 5---the elbow shell, 6---transmission cable, 7---the gear of locomotive traction motor, 8---the stainless steel fixing sleeve, 9---the brass fixing sleeve; 51---case head, 52---shell tail cover.
Embodiment
Clearer for technical matters, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
As shown in Figure 2, the utility model provides a kind of speed pickup, comprises probe assembly, elbow shell 5 and transmission cable 6.Described probe assembly comprises printed circuit board (PCB) 3, keeper 2 and 2 Hall components and parts 1.One end of described keeper 2 is by slot and printed circuit board (PCB) 3 clampings, and the other end is by connecting hole and 2 Hall components and parts 1 clampings.Keeper 2 is provided with through hole, and the metal pin of 2 Hall components and parts 1 passes through hole and printed circuit board (PCB) 3 welding on the keeper 2.
As shown in Figure 3, described elbow shell 5 comprises case head 51 and the shell tail cover 52 of bending structure.Probe assembly is installed on case head 51.Transmission cable 6 is arranged in the elbow shell 5.One end of transmission cable 6 and 3 welding of the printed circuit board of probe assembly, the other end extends to the outside of elbow shell 5.Under the preferable case, such as Fig. 2 or shown in Figure 3, the bending angle between case head 51 and the shell tail cover 52 is 90 °.When bending angle is 90 ° between case head 51 and the shell tail cover 52, can maximizedly utilize the down suction between electric motor end cap and the bearing (ball) cover, therefore so that speed pickup of the present utility model is applicable to the traction electric machine of light rail locomotive; In addition, also be convenient to metal shell machining, and this moment, transmission cable 6 was installed with car body also the most suitable.
In the utility model, described Hall components and parts 1 for the become one chip of structure of magnet.By integrated design, can reduce chip and take up space, greatly reduce the difficulty of mounting process.
Shown in keeper 2 can adopt in the prior art various engineering plastics keepers commonly used, the one end is provided with slot, is used for clamping printed circuit board (PCB) 3, the other end is provided with connecting hole, is used for clamping Hall components and parts 1.Described elbow shell 5 can adopt stainless steel casing commonly used in the prior art.
In the utility model, be equipped with the hole for injecting glue 4 for encapsulating between the inwall of the outer wall of described printed circuit board (PCB) 3 and elbow shell 5 and between the inwall of the outer wall of keeper 2 and elbow shell 5, as shown in Figure 2.Can make insulating heat-conductive glue enter the 5 inner and curing of elbow shell by in described hole for injecting glue 4, pouring into insulating heat-conductive glue, guarantee sealing property, heat radiation, against shock and the Electro Magnetic Compatibility of product, improve machinery and the electric property of product.
As a kind of preferred implementation of the present utility model, as shown in Figure 2, the heart yearn of described transmission cable 6 is positioned at the center of elbow shell 5, can effectively guarantee the dielectric voltage withstand performance of speed pickup.As shown in Figure 4, described transmission cable 6 overlaps 52 places at the shell tail and is locked by stainless steel fixing sleeve 8 and brass fixing sleeve 9 interference fit.
Inventor of the present utility model finds, the speed pickup that the utility model provides is by adopting the structural design of elbow shell 5, not only can make speed pickup satisfy the less installation dimension requirement in down suction between electric motor end cap and the bearing (ball) cover, and this kind version so that transmission cable 6 when under car, installing fixedly and the car body bearing be in parastate, the jerk impact that is subject to when being convenient to transmission cable 6 at fixing on the bearing and making transmission cable 6 at locomotive operation is minimum.
After adopting the structural design of elbow shell 5, mainly be the impact that produces following 2 aspects: 1, printed circuit board (PCB) 3 is made: because the speed pickup that the utility model provides is short than the probe of conventional motor speed sensor, therefore printed circuit board (PCB) 3 can fracture into 2 sections when making, being installed in respectively probe and with the shell place of probe vertical; Also can be by reducing on the printed circuit board (PCB) 3 the components and parts volume or change the components and parts cabling, thus make the compacter length that can reduce printed circuit board (PCB) 3 of printed circuit board (PCB) 3 structures, to satisfy installation requirement.The utility model then is to solve its installation question by the structure that adopts latter's compact circuit plate.2, transmission cable 6 assembling: the heart yearn of transmission cable 6 is directly to be welded on the printed circuit board (PCB), then with 90 ° of elbow shell 5 bendings and extend to the outside, can realize by frock.Otherwise the heart yearn of transmission cable 6 is excessively near apart from the elbow shell 5 of metal, and the dielectric voltage withstand performance of product can not be guaranteed.
As shown in Figure 5, the utility model also provides a kind of traction electric machine rotor velocity-measuring system, comprises and the hard-wired speed pickup of locomotive traction motor; Wherein, the speed pickup that described speed pickup provides for the utility model, the Hall components and parts 1 of described speed pickup and gear 7 center-aligned of locomotive traction motor.The traction electric machine rotor velocity-measuring system that the utility model provides has higher induction sensitivity.Particularly, described speed pickup is fixedly installed on the electric motor end cap of locomotive traction motor by screw and securing member.
Compared with prior art, the speed pickup and the traction electric machine rotor velocity-measuring system that provide of the utility model also has the following advantages:
1, adopts shielding, one point earth, signal integration, clean power supply measure, can satisfy the requirement of high security, high reliability, high maintenance performance and electromagnetic compatibility (EMC) performance of rolling stock operation.
2, adopt the components and parts of paster encapsulation can effectively reduce the volume of sensor pcb 3 on the printed circuit board (PCB) 3, make the structure of sensor probe assembly compacter, volume is less, is convenient to the installation of speed pickup on locomotive traction motor.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. a speed pickup is characterized in that, described speed pickup comprises probe assembly, elbow shell and transmission cable; Described probe assembly comprises printed circuit board (PCB), keeper and 2 Hall components and parts; One end of described keeper is by slot and printed circuit board (PCB) clamping, and the other end is by connecting hole and the clamping of 2 Hall components and parts, and the metal pin of 2 Hall components and parts passes keeper and printed circuit board (PCB) welding;
Described elbow shell comprises case head and the shell tail cover of bending structure, and probe assembly is installed on case head, and transmission cable is arranged in the elbow shell; One end of transmission cable and the welding of the printed circuit board of probe assembly, the other end extends to the elbow housing exterior.
2. speed pickup according to claim 1 is characterized in that, described Hall components and parts for the become one chip of structure of magnet.
3. speed pickup according to claim 1 and 2 is characterized in that, the bending angle between case head and the shell tail cover is 90 °.
4. speed pickup according to claim 1 and 2 is characterized in that, is equipped with the hole for injecting glue for encapsulating between the inwall of the outer wall of described printed circuit board (PCB) and elbow shell and between the inwall of the outer wall of keeper and elbow shell.
5. speed pickup according to claim 4 is characterized in that, is filled with insulating heat-conductive glue by hole for injecting glue in the elbow shell.
6. speed pickup according to claim 1 and 2 is characterized in that, the heart yearn of described transmission cable is positioned at the center of elbow shell.
7. speed pickup according to claim 6 is characterized in that, transmission cable is locked by stainless steel fixing sleeve and brass fixing sleeve interference fit at shell tail cover place.
8. a traction electric machine rotor velocity-measuring system comprises and the hard-wired speed pickup of locomotive traction motor; It is characterized in that, described speed pickup is each described speed pickup of claim 1-7, and the case head of described speed pickup is alignd with the gear centre of locomotive traction motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220168617 CN202661476U (en) | 2012-04-20 | 2012-04-20 | Velocity sensor and traction motor rotor velocity measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220168617 CN202661476U (en) | 2012-04-20 | 2012-04-20 | Velocity sensor and traction motor rotor velocity measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202661476U true CN202661476U (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220168617 Expired - Fee Related CN202661476U (en) | 2012-04-20 | 2012-04-20 | Velocity sensor and traction motor rotor velocity measuring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202661476U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645547A (en) * | 2012-04-20 | 2012-08-22 | 株洲电力机车电机修造有限公司 | Speed sensor and speed-measuring system of traction motor rotor |
| WO2019119360A1 (en) * | 2017-12-21 | 2019-06-27 | Hamlin Electronics (Suzhou) Co. Ltd | Output speed sensor assembly |
| CN111487431A (en) * | 2020-06-03 | 2020-08-04 | 湖南联诚轨道装备有限公司 | Speed sensor |
-
2012
- 2012-04-20 CN CN 201220168617 patent/CN202661476U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645547A (en) * | 2012-04-20 | 2012-08-22 | 株洲电力机车电机修造有限公司 | Speed sensor and speed-measuring system of traction motor rotor |
| CN102645547B (en) * | 2012-04-20 | 2015-07-08 | 株洲电力机车电机修造有限公司 | Speed sensor and speed-measuring system of traction motor rotor |
| WO2019119360A1 (en) * | 2017-12-21 | 2019-06-27 | Hamlin Electronics (Suzhou) Co. Ltd | Output speed sensor assembly |
| CN111868532A (en) * | 2017-12-21 | 2020-10-30 | 哈姆林电子(苏州)有限公司 | Output speed sensor assembly |
| CN111487431A (en) * | 2020-06-03 | 2020-08-04 | 湖南联诚轨道装备有限公司 | Speed sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20150420 |
|
| EXPY | Termination of patent right or utility model |