CN204719065U - A kind of water proof type speed pickup - Google Patents
A kind of water proof type speed pickup Download PDFInfo
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- CN204719065U CN204719065U CN201520415305.9U CN201520415305U CN204719065U CN 204719065 U CN204719065 U CN 204719065U CN 201520415305 U CN201520415305 U CN 201520415305U CN 204719065 U CN204719065 U CN 204719065U
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Abstract
A kind of water proof type speed pickup, ring gear is arranged at the bottom of the hole in housing large diameter hole, and the runner of rotor assembly is arranged in the endoporus of magnetic conductor; The rotating shaft of rotor assembly is arranged on by bearing in the axis hole in housing large diameter hole; Rear end cap is arranged on the rear end of housing.Coil block is arranged in the endoporus of magnetic conductor.Room temperature vulcanized silicone rubber is filled between rear end cap and cover plate.Electric connector is fixed on the outer face of rear end cap; Pull-fork assembly is arranged in rotating shaft.Described turning axle ring set in rotating shaft, and between housing and front end end cover; Described electric connector adopts waterproof electrical connector.The utility model is sealed by solution rotation axis seal and afterbody connector place and is used waterproof electrical connector, achieve speed pickup waterproof, not loss of function after air speed sensor is used under water, and still can carry out antiskid brake control by normal acquisition rate signal under terrestrial environment, thus ensure that aircraft application is in amphibious environment.
Description
Technical field
The present invention relates to Aircraft Anti-skid Break Control field, specifically a kind of water proof type speed pickup.
Background technology
Along with electronic anti-skid braking system technical research application reaches its maturity, this system all installed by current most of aircraft, speed pickup is as a vitals of electronic anti-skid braking system, for the sinusoidal alternating voltage signal that control enclosure provides frequency to be directly proportional to wheel angular velocity, wheel speed is detected for anti-skid brake system (ABS), as can be seen here, can speed pickup adapt to particular surroundings, to the normal work important of electronic anti-skid braking system under respective environment.
The speed pickup of ordinary electronic anti-skid brake system (ABS) generally only has simple hermetically-sealed construction, this sensor realizes simple sealing by sulphurated siliastic, dust ring, metal helix, interference fit crimping etc., possess resistance to sand dust to a certain degree, wet-heat resisting, the resistance to ability of drenching with rain, but in particular circumstances, still there will be because hermetically-sealed construction deficiency causes internal fault, affect the normal work of speed pickup.By retrieving patent documentation both domestic and external and paper database, find that the publication number of having obtained the authorization is the patent of invention of CN102495228A " a kind of permanent-magnet type airplane wheel speed sensor ", only used simple wiper seal coil structures, general electric connector and revolute axes configuration in the present invention, though have certain humidity environment capacity, in underwater particular surroundings, still request for utilization cannot be met.
Summary of the invention
Under overcoming the particular surroundings that exists in prior art, because hermetically-sealed construction defect causes internal wiring fault, affect the deficiency that speed pickup normally works, the present invention proposes a kind of water proof type speed pickup.
The present invention includes housing, ring gear, magnetic conductor, rotor assembly, coil block, pull-fork assembly, room temperature vulcanized silicone rubber and electric connector.Wherein: ring gear is arranged at the bottom of the hole in housing large diameter hole.The runner of rotor assembly is arranged in the endoporus of magnetic conductor; The rotating shaft of rotor assembly is arranged on by bearing in the axis hole in housing large diameter hole; Rear end cap is arranged on the rear end of housing, presses on the cover board fixed bearing block and bearing.Magnetic conductor is arranged in housing, and is positioned at the side of ring gear.Coil block is arranged in the endoporus of magnetic conductor.Room temperature vulcanized silicone rubber is filled between rear end cap and cover plate.Electric connector is fixed on the outer face of rear end cap; Pull-fork assembly is arranged in rotating shaft.
The present invention also comprises turning axle O-ring seal; Described turning axle ring set in rotating shaft, and between housing and front end end cover; Described electric connector adopts waterproof electrical connector.Described housing is identical with the external diameter of described turning axle O-ring seal for the aperture of installing port, rotating shaft one end.
Rotor assembly of the present invention is joined together by runner and axle, and drive unit axle is connected with on shift fork and wheel is meshed.Stator is-ring gear, and rotor assembly is-fluted disc, has a small―gap suture between tooth top.In coil block press-in magnetic conductor, magnetic conductor is enclosed within runner and prevents radial direction and axially-movable by register pin, bearing, bearing seat and cover plate, coil adopts two remaining, can input dual signal.Rotate together with rotor assembly when axle rotates under wheel drives, along with rotor assembly tooth and the relative of ring gear tooth with stagger, between cog magnetic resistance constantly changes, cause the change of magnetic flux, the magnetic flux of change responds to generation sine voltage signal on coil block, and the frequency of sinusoidal signal is directly proportional with wheel velocity of rotation.Rear end cap is fixed on housing by screw thread.
During work, external power source is sensor power, as long as wheel rotates, the sensor be arranged on wheel just can produce the output signal be directly proportional to wheel speed, in order to meet remaining requirement, coil adopt two-wire around, achieve the redundancy design of product, when speed pickup is by wheel driven rotary, ring gear is aimed at the rectangular teeth on rotor assembly, depart from and alternately occur, cause the magnetic resistance cyclical variation in closed magnetic circuit, magnetic flux in magnetic circuit also synchronously changes thereupon, so the induced voltage that the near sinusoidal that generation one is identical with magnetic resistance change rate frequency on coil changes, obtaining is directly proportional to wheel rotating speed has the frequency signal of certain voltage.
Compare with common speed pickup, the present invention has following characteristics: sealed by solution rotation axis seal and afterbody connector place and used waterproof electrical connector, reach the demand of speed pickup waterproof, underwater environment does not affect its electric output performance, not loss of function after air speed sensor is used under water, and still can carry out antiskid brake control by normal acquisition rate signal under terrestrial environment, thus ensure that aircraft application is in amphibious environment.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of water proof type speed pickup.
In figure:
1. housing; 2. ring gear; 3. bearing seat; 4. cover plate; 5. rear end cap; 6. magnetic conductor; 7. front end end cover; 8. rotor assembly; 9. coil block; 10. pull-fork assembly; 11. room temperature vulcanized silicone rubbers; 12. keys; 13. waterproof electrical connectors; 14. turning axle O-ring seals; 15. O-ring seals; 16. clutch shaft bearings; 17. second bearings.
Embodiment
The present embodiment is a kind of water proof type speed pickup for certain system.
The present embodiment comprises housing 1, ring gear 2, bearing seat 3, cover plate 4, rear end cap 5, magnetic conductor 6, front end end cover 7, rotor assembly 8, coil block 9, pull-fork assembly 10, room temperature vulcanized silicone rubber 11, key 12, waterproof electrical connector 13, turning axle O-ring seal 14, O-ring seal 15, clutch shaft bearing 16 and the second bearing 17.
Housing 1 is the carrier of the present embodiment.Ring gear 2 is arranged at the bottom of the hole in housing 1 large diameter hole.The runner 19 of rotor assembly 8 is arranged in the endoporus of magnetic conductor 6, and the top of runner 19 is fixed by the clutch shaft bearing 16 be arranged in bearing seat 3; The rotating shaft 18 of rotor assembly 8 is arranged in the axis hole in housing 1 large diameter hole by the second bearing 17; Rear end cap 5 is arranged on the rear end of housing 1, is pressed in fixed bearing block 3 and clutch shaft bearing 16 on cover plate 4.Magnetic conductor 6 is arranged in housing 1, and is positioned at the side of ring gear 2.Coil block 9 is arranged in the endoporus of magnetic conductor 6.Room temperature vulcanized silicone rubber 11 is filled between rear end cap 5 and cover plate 4.Waterproof electrical connector 13 is fixed by screws on the outer face of rear end cap 5.O-ring seal 15 is housed between rear end cap 5 and housing 1, there is water-proof function.
Rotor assembly 8 is made up of rotating shaft 18 and runner 19, and rotating shaft 18 is positioned at runner 19 one end, and is linked together by Laser Welding (LBW) and runner 19.Tooth on runner 19 excircle and the tooth on ring gear internal circular surfaces match, by producing magnetic resistance change rate during dislocation at the bottom of tooth top tooth.The rotating shaft 18 of rotor assembly 8 successively through the second bearing 17, housing 1, turning axle O-ring seal 14 and front end end cover 7, and is fixed by screw and pull-fork assembly 10.Equal interference fit between the internal circular surfaces of housing 1 and the outer round surface of the second bearing 17.In the present embodiment, the external diameter on runner 19 top is identical with the internal diameter of clutch shaft bearing 16; The excircle of this runner 19 is evenly equipped with 50 teeth.The external diameter of rotating shaft 18 is identical with the internal diameter of the second bearing 17.
Ring gear 2 is annular element.50 teeth are had at the internal circular surfaces of described ring gear.
When ring gear 2 cooperatively interacts with runner 19, between the tooth top surface of described ring gear 2 and the tooth top surface of runner 19, have the gap of 0.1mm, and when the initial position that ring gear 2 and runner 19 cooperatively interact, the tooth top of ring gear 2 is relative with the tooth top of runner 19.When runner 19 rotates, along with ring gear 2 and the change of runner 19 relative position, the magnetic gap between ring gear 2 and runner 19 forms the change that convex-concave is staggered.
Coil block 9 is made up of coil former 20, fluoroplastic wire 21, enameled wire 22, insulation spacer 23 and para tape 24, first on coil former 20, be coated with W30-4 paint adhere to insulation spacer 23 and para tape 24, by after reserved for enameled wire 22 top about 150mm by winder around on coil former 20.Coiling is complete, and fluoroplastic wire 21 is divested 3 ~ 4mm, and is undertaken stranded by former twisted state.Enameled wire 22 top and end fine sandpaper are removed insulating lacquer layer, is wrapped in fluoroplastic wire 21 end respectively by the hand of spiral, weld with solder HISnPb50-2.Postwelding is clean with washes of absolute alcohol, is coated with W30-4 paint.Insulate with para tape 24 pairs of coil skins, be coated with W30-4 paint between para tape and coil, and tighten with ramie line.Vacuum paint dipping or often around 1 layer of even brush W30-04 paint, ramie line is tightened rear brush one deck W30-4 and painted, and finally dries.
Magnetic conductor 6 is circular shell.The external diameter of magnetic conductor 6 is identical with the internal diameter of housing 1; The internal diameter of magnetic conductor 6 is identical with the external diameter of coil block 9.Magnetic conductor 6 is arranged in housing 1 endoporus, and is located by key 12.
Housing 1 is hollow solid of revolution.The endoporus of described housing 1 rear end is stepped.The internal thread of the endoporus of this housing 1 rear end matches with the external thread of rear end cap 5.The aperture of the endoporus of this housing 1 rear end is identical with the external diameter of magnetic conductor 6, bearing seat 3, second bearing 17 respectively.In the aperture of housing 1 front end, have turning axle O-ring seal 14, turning axle O-ring seal 14 is turning axle Combined sealing circle, has rotary seal water-proof function.
Rear end cap 5 is hollow solid of revolution, and outer round surface has the screw thread for coordinating with housing 1 rear end; Through hole is had, for installing waterproof electrical connector 13 in the centre of rear end cap 5.
Front end end cover 7 is hollow solid of revolution, and cylindrical path is identical with the aperture of housing 1 front end endoporus, is arranged on housing 1 front end by screw; The through hole that the rotating shaft 18 of rotor assembly 8 is passed is had in the centre of front end end cover 7.
Pull-fork assembly 10 is rectangular plate-like, and have circular boss in the geometric center that this pull-fork assembly one is surperficial, there is through hole at the center of this boss, and the central axis of this through hole is in the surface of pull-fork assembly.Described through-hole inner surface has spline, for coordinating with rotating shaft.Aperture place, described through hole one end is the taper surface extended out, the cone match in this taper surface and rotating shaft.Described pull-fork assembly rectangular slab two minor faces have " U " shape groove, should coordinate with the pulling axis on wheel by " U " shape groove.
First the second bearing 17 is pressed in housing 1 during assembling, then the rotating shaft 18 of rotor assembly 8 is passed from the second bearing 17, housing 1 mesopore and turning axle O-ring seal 14.Rotating shaft 18, in outside, is connected with pull-fork assembly 10 by screw, produces to move axially to be screwed in rotating shaft 18 with packing ring and screw and locked for preventing rotor assembly 8.
After rotor assembly 8 installs, with depression bar by 1 to the stop of vertical for ring gear 2 slowly press-in housing.Be encased in magnetic conductor 6 by coil block 9 again, ring gear 2 is pushed down in magnetic conductor 6 one end, for avoiding magnetic conductor 6 to rotate, being contained in by key 12 in magnetic conductor groove and housing 1 groove and carrying out stop.For avoiding magnetic conductor 6 to move axially, have the clutch shaft bearing 16 of bearing seat 3 to be arranged on the runner 19 of rotor assembly 8 in cover, bearing seat 3 compresses magnetic conductor 6.Cover plate 4 is pressed on bearing seat 3, prevents clutch shaft bearing 16 from moving axially.Rear end cap 5 to be screwed on housing 1 and holddown plate 4, first O-ring seal 15 to be enclosed within before rear end cap 5 is screwed in housing 1 in the seal groove of rear end cap 5 and to make in order, draw leaded for institute from rear end cap 5 hole, drawing wire adopts crimping mode to be connected with waterproof electrical connector 13, waterproof electrical connector 13 is fixed by screws on rear end cap 5, before installation waterproof electrical connector 13, fill room temperature vulcanized silicone rubber 11 in hole.
The water proof type speed pickup course of work is, when the gear train be connected with pull-fork assembly 10 rotates, pull-fork assembly 10 transmission is driven to rotate together, the rotor assembly 8 be simultaneously connected with pull-fork assembly 10 also rotates thereupon, tooth on rotor assembly 8 is aimed at the rectangular teeth on ring gear 2, depart from and alternately occur, cause the magnetic resistance cyclical variation in closed magnetic circuit, magnetic flux in magnetic circuit also synchronously changes thereupon, so the induced voltage that the near sinusoidal that generation one is identical with magnetic resistance change rate frequency on coil changes, obtaining is directly proportional to wheel rotating speed has the frequency signal of certain voltage.
Claims (2)
1. a water proof type speed pickup, comprises housing, ring gear, magnetic conductor, rotor assembly, coil block, pull-fork assembly, room temperature vulcanized silicone rubber and electric connector; Wherein: ring gear is arranged at the bottom of the hole in housing large diameter hole; The runner of rotor assembly is arranged in the endoporus of magnetic conductor; The rotating shaft of rotor assembly is arranged on by bearing in the axis hole in housing large diameter hole; Rear end cap is arranged on the rear end of housing, presses on the cover board fixed bearing block and bearing; Magnetic conductor is arranged in housing, and is positioned at the side of ring gear; Coil block is arranged in the endoporus of magnetic conductor; Room temperature vulcanized silicone rubber is filled between rear end cap and cover plate; Electric connector is fixed on the outer face of rear end cap; Pull-fork assembly is arranged in rotating shaft;
It is characterized in that, comprise turning axle O-ring seal; Described turning axle ring set in rotating shaft, and between housing and front end end cover; Described electric connector adopts waterproof electrical connector.
2. water proof type speed pickup as claimed in claim 1, it is characterized in that, described housing is identical with the external diameter of described turning axle O-ring seal for the aperture of installing port, rotating shaft one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520415305.9U CN204719065U (en) | 2015-06-16 | 2015-06-16 | A kind of water proof type speed pickup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520415305.9U CN204719065U (en) | 2015-06-16 | 2015-06-16 | A kind of water proof type speed pickup |
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| CN204719065U true CN204719065U (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520415305.9U Active CN204719065U (en) | 2015-06-16 | 2015-06-16 | A kind of water proof type speed pickup |
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| CN (1) | CN204719065U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037307A (en) * | 2017-12-14 | 2018-05-15 | 中国航空工业集团公司上海航空测控技术研究所 | Triplex redundance rotation-speed measuring device based on magneto-electronic theory |
| CN108405034A (en) * | 2018-04-17 | 2018-08-17 | 武汉轻工大学 | Measurement sensor and self feed back automation compensation hulling machine |
| CN108730425A (en) * | 2018-05-07 | 2018-11-02 | 西安航空制动科技有限公司 | A kind of planetary structure for wheel spin-up transducer |
| CN108722534A (en) * | 2018-04-17 | 2018-11-02 | 武汉轻工大学 | Measurement sensor and self feed back automation compensation hulling machine |
| CN109406821A (en) * | 2018-09-18 | 2019-03-01 | 贵州新安航空机械有限责任公司 | A kind of variable reluctance wheel speed sensors |
| CN109425562A (en) * | 2017-08-22 | 2019-03-05 | 中国科学院长春光学精密机械与物理研究所 | A kind of laser particle analyzer and its application for oil field reinjection water suspended matter partial size on-line monitoring |
| CN111537761A (en) * | 2020-05-29 | 2020-08-14 | 西安航空制动科技有限公司 | Electromagnetic double-toothed ring engine speed sensor |
-
2015
- 2015-06-16 CN CN201520415305.9U patent/CN204719065U/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109425562A (en) * | 2017-08-22 | 2019-03-05 | 中国科学院长春光学精密机械与物理研究所 | A kind of laser particle analyzer and its application for oil field reinjection water suspended matter partial size on-line monitoring |
| CN108037307A (en) * | 2017-12-14 | 2018-05-15 | 中国航空工业集团公司上海航空测控技术研究所 | Triplex redundance rotation-speed measuring device based on magneto-electronic theory |
| CN108037307B (en) * | 2017-12-14 | 2024-02-13 | 中国航空工业集团公司上海航空测控技术研究所 | Three-redundancy rotating speed measuring device based on magnetoelectric principle |
| CN108722534B (en) * | 2018-04-17 | 2023-09-26 | 武汉轻工大学 | Measurement sensor and self-feedback automatic compensation rice huller |
| CN108405034A (en) * | 2018-04-17 | 2018-08-17 | 武汉轻工大学 | Measurement sensor and self feed back automation compensation hulling machine |
| CN108722534A (en) * | 2018-04-17 | 2018-11-02 | 武汉轻工大学 | Measurement sensor and self feed back automation compensation hulling machine |
| CN108405034B (en) * | 2018-04-17 | 2023-09-01 | 武汉轻工大学 | Measurement sensor and self-feedback automatic compensation rice huller |
| CN108730425A (en) * | 2018-05-07 | 2018-11-02 | 西安航空制动科技有限公司 | A kind of planetary structure for wheel spin-up transducer |
| CN108730425B (en) * | 2018-05-07 | 2021-12-03 | 西安航空制动科技有限公司 | Planetary structure for airplane wheel speed sensor |
| CN109406821A (en) * | 2018-09-18 | 2019-03-01 | 贵州新安航空机械有限责任公司 | A kind of variable reluctance wheel speed sensors |
| CN109406821B (en) * | 2018-09-18 | 2020-12-18 | 贵州新安航空机械有限责任公司 | Variable-reluctance wheel speed sensor |
| CN111537761A (en) * | 2020-05-29 | 2020-08-14 | 西安航空制动科技有限公司 | Electromagnetic double-toothed ring engine speed sensor |
| CN111537761B (en) * | 2020-05-29 | 2023-06-30 | 西安航空制动科技有限公司 | Electromagnetic type double-toothed ring machine wheel speed sensor |
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