CN102565449B - Double-section type four-redundancy airplane wheel velocity sensor - Google Patents

Double-section type four-redundancy airplane wheel velocity sensor Download PDF

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Publication number
CN102565449B
CN102565449B CN 201210002176 CN201210002176A CN102565449B CN 102565449 B CN102565449 B CN 102565449B CN 201210002176 CN201210002176 CN 201210002176 CN 201210002176 A CN201210002176 A CN 201210002176A CN 102565449 B CN102565449 B CN 102565449B
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CN
China
Prior art keywords
housing
bearing
axle
fluted disc
face
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Expired - Fee Related
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CN 201210002176
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Chinese (zh)
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CN102565449A (en
Inventor
何学工
马晓军
柯少昌
田广来
刘忠平
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Xian Aviation Brake Technology Co Ltd
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Xian Aviation Brake Technology Co Ltd
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Priority to CN 201210002176 priority Critical patent/CN102565449B/en
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Publication of CN102565449B publication Critical patent/CN102565449B/en
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Abstract

The invention provides a double-section type four-redundancy airplane wheel velocity sensor. A permanent magnet type sensor assembly is positioned at an inner gear ring of a casing and installed at a hole bottom of a big inside diameter hole of the casing; a dust ring, a spring and a bearing are positioned in a small inside diameter hole of the casing, and the bearing is installed at one end of the small inside diameter hole of the casing; a fluted disc of an excitation rotor assembly is installed in an inner hole of a gear ring; the end surface at one end of a magnetizer is contacted with one end surface of the gear ring, and the other end of the magnetizer is positioned at a bearing pedestal of a small bearing; a coil assembly is installed in an inner hole of the magnetizer; a magnetism isolating supporting ring is installed in a big sleeve; the big sleeve is installed in inner holes of the magnetism isolating supporting ring and the magnetism isolating bearing pedestal; and a small sleeve is fixed at the end socket of a shaft. The double-section type four-redundancy airplane wheel velocity sensor provided by the invention is flexible in control mode, quick in response, and convenient for collection and treatment of velocity signals, brings convenience for operation of a pilot, meets requirements of different braking systems for signal collection, has wide application range, long service life, high sensitivity, excellent output characteristic, stability and reliability, and has the advantages of compact structure, convenience for dismantling, simplicity of maintenance and low manufacturing cost.

Description

Double-joint type four remaining wheel spin-up transducers
Technical field
The present invention relates to the Aircraft Anti-skid Break Control field, specifically a kind of double-joint type four remaining wheel spin-up transducers.
Background technology
along with aircraft improves constantly security requirement, there is the anti-skid brake system (ABS) of material impact just to seem more and more important to aircraft safety, present nearly all aircraft has all been installed anti-skid brake system (ABS), wheel spin-up transducer is as a vitals of electronic anti-skid braking system, be used for experiencing the speed of wheel and produce the frequency signal that is directly proportional to the wheel rate signal, offer controller, what compared according to frequency signal and reference velocity by controller, determine whether braking, this shows, the quality of wheel spin-up transducer, normal operation important to brake system.
The speed pickup of tradition brake system is generally inertial sensor, mainly formed by flywheel, ball, lining, volute spring, push rod and rocking arm, pull bar, oil-feed needle-valve and the needle-valve of draining the oil, complex structure and without remaining, dynamic response is low, measuring accuracy is low, generally there is no remaining, only be used on the aircraft that the inertia anti-skid brake system (ABS) is housed.Excitation sensor or permanent magnet sensor generally are housed being equipped with on the aircraft of electronic anti-skid braking system, must have the external power supply powered products to work for the excitation sensor, can't satisfy under the aircraft powering-off state collection to speed.Though permanent magnet sensor does not need external power supply, owing to being subjected to the restriction of magnet steel restricted volume to have low speed amplitude problem on the low side, no matter which kind of sensor, also only can realize two remaining signals collecting, can not meet different brake system needs, range of application is less, and adaptability is relatively poor.
Summary of the invention
For overcoming the complicated difficult processing of the structure that exists in prior art, dynamic response is low, measuring accuracy is low, and product is without remaining, and range of application is less, and the deficiency that adaptability is relatively poor the present invention proposes a kind of double-joint type four remaining wheel spin-up transducers.
The present invention includes housing, shift fork, spring, bearing, ring gear, excitation rotor assembly, coil block, magnetic conductor, bearing seat, every magnetic axis bolster, permanent magnet sensor assembly, electric connector, p-m rotor assembly, large sleeve, magnetism isolating spacer ring, little bearing, small sleeve; The permanent magnet sensor assembly is positioned at housing, and is in housing electric connector one end is arranged, at the bottom of ring gear is arranged on the hole in housing large diameter hole; Dust ring, spring, bearing are positioned at the little inner diameter hole of housing, little inner diameter hole one end of housing that bearing is installed; The little internal diameter internal circular surfaces of the outer round surface of the outer round surface of bearing and housing and between equal interference fit; End face of bearing is pressed on the end face of ring gear, and another end face of bearing is pressed on spring; Elastic collar is stuck in the groove of little inner diameter hole one end of housing; The excitation rotor assembly is positioned at housing; And the fluted disc of this excitation rotor assembly is arranged in the endoporus of ring gear; Be arranged in the described fluted disc one end end face excitation rotor assembly axle brearing bore of packing into, the axle that is arranged in the described fluted disc other end endoporus of coil block of packing into is connected with axle on the p-m rotor assembly; The bearing seat of magnetic conductor, be arranged on successively in the endoporus of housing every magnetic axis bolster, magnetism isolating spacer ring and permanent magnet sensor assembly, be clearance fit between the large diameter internal circular surfaces of the outer round surface of above-mentioned each part and housing; Magnetic conductor one end end face contacts with an end face of ring gear; The magnetic conductor other end is positioned at the bearing seat place of little bearing; Coil block is packed in the endoporus of magnetic conductor; End face of bearing seat and an end contact of magnetic conductor; An end contact of another end face of bearing seat and magnetism isolating spacer ring; Described magnetism isolating spacer ring is arranged in large sleeve; Every end face of magnetic axis bolster and another end contact of magnetism isolating spacer ring; Every another end face of magnetic axis bolster and the end contact of permanent magnet sensor assembly; Large sleeve is arranged on the magnetism isolating spacer ring and in the endoporus of magnetic axis bolster; Electric connector is fixed on the outer face of permanent magnet sensor assembly; Shift fork is fixed on the termination of axle, and small sleeve is fixed on the termination of axle.
Described excitation rotor assembly comprises axle and fluted disc; Be evenly equipped with several teeth that matches with tooth on the ring gear internal circular surfaces on the card excircle of described fluted disc; Center in another card of fluted disc card is connected with axle.
On the internal diameter of the center pit of magnetic conductor and excitation rotor assembly, the external diameter of dish axle is identical; Have the ring groove of hookup wire coil assembly on the housing of described magnetic conductor.
Be evenly equipped with several teeth at the ring gear internal circular surfaces; Gapped between the tooth top surface of described ring gear and the tooth top surface of fluted disc, and when the initial position that ring gear and fluted disc cooperatively interact, the tooth top of ring gear is relative with the tooth top of fluted disc.
Maximum diameter of hole every magnetic axis bolster endoporus is identical with the maximum outside diameter of large sleeve, and the small-bore end is p-m rotor assembly via hole, and on cylindrical, symmetry has Wire channel in building.
The maximum diameter of hole of housing endoporus and ring gear, magnetic conductor, bearing seat, identical every the maximum outside diameter of magnetic axis bolster, magnetism isolating spacer ring and permanent magnet sensor assembly; The small-bore of the endoporus of this housing is identical with the external diameter of bearing; The ring flange that the end face that housing is adjacent with bearing is connected with the wheel axle for this housing; The inside surface that permanent magnet sensor assembly one end is installed in described housing has the line outlet groove with the housing shaft line parallel;
In axle and the scolder outlet cruciferous of fluted disc fixed connecting end; The circumferential surface of the axle other end is flank of thread, and has keyway on this flank of thread.
Rotor assembly of the present invention is joined together by axle and fluted disc, and the drive unit that is connected with shift fork by key on axle on the incorporating mill wheel is meshed.The fluted disc miner diameter end passes the coil block endoporus and is connected with axle on the p-m rotor assembly; Coil block and permanent magnet sensor assembly all adopt two redundancy designs, can export simultaneously four road signals.When rotating under wheel drives, axle rotates together with the excitation rotor assembly, along with fluted disc tooth on rotor and the relative of ring gear tooth with stagger, tooth asks that magnetic resistance constantly changes, cause the change of magnetic flux, the magnetic flux that changes is responded to the generation sine voltage signal on coil block, the frequency of sinusoidal signal is directly proportional with the wheel velocity of rotation.
Can provide sine voltage signal when the present invention has external power source at work, can play the effect of small-sized variable reluctance generator when being the sensor power supply without external power source, also can provide sine voltage signal.during work, as long as wheel rotates, the sensor that is arranged on wheel just can produce the output signal that is directly proportional to wheel speed, in order to satisfy the redundance requirement, coil block and magneto sensing coil assembly are two remainings, realized the redundance design of product, when speed pickup during by the wheel driven rotary, aim at the rectangular teeth on fluted disc on ring gear, depart from alternately and occur, cause the magnetic resistance cyclical variation in closed magnetic circuit, magnetic flux in magnetic circuit also synchronously changes thereupon, so produce the induced voltage that a near sinusoidal identical with the magnetic resistance change rate frequency changes on coil, obtain being directly proportional to the wheel rotating speed and have the frequency signal of certain voltage.
Because the present invention adopts redundance design, output signal is many, is convenient to realize that hyperchannel controls, and reliability is high, can satisfy different brake system to the collection of signal, long, highly sensitive, good output and reliable and stable of life-span applied widely.No matter it is the sensor power supply that the present invention has or not external power source, sensor all can be worked, and control mode is more flexible, and response is fast, is convenient to aircraft rate signal is gathered, processes, and the pilot can conveniently be operated; Be directly installed in the wheel end cap, need not wheel is done any change.Compact conformation of the present invention, convenient disassembly is safeguarded simply low cost of manufacture.
Description of drawings
Accompanying drawing 1 is the structural representation of double-joint type four remaining wheel spin-up transducers.
Accompanying drawing 2 is structural representations of housing.
Accompanying drawing 3 is structural representations of shift fork.
Accompanying drawing 4 is side views of accompanying drawing 3.
Accompanying drawing 5 is structural representations of excitation rotor assembly.
Accompanying drawing 6 is structural representations of magnetic conductor.
Accompanying drawing 7 is structural representations of coil block.
Accompanying drawing 8 is structural representations of bearing seat.
Accompanying drawing 9 is the structural representations every the magnetic axis bolster.Wherein:
1. housing 2. shift fork 3 nut 4 key 5 elastic collar 6 dust ring 7 spring 8 bearing 9 ring gear 10 excitation rotor assembly 11 coil block 12 magnetic conductor 13 bearing seats 14 are every the magnetic axis bolster 15 permanent magnet sensor assembly 16 electric connector 17 large sleeve 19 magnetism isolating spacer ring 20 half little bearing 22 small sleeve 23 axle 24 fluted disc 25 field coil skeleton 26 enameled wire 27 insulation film 28 fluoroplastic wires of round pin 21 of p-m rotor assembly 18
Embodiment
The present embodiment is a kind of wheel spin-up transducer for certain system.
The present embodiment comprises housing 1, shift fork 2, nut 3, key 4, elastic collar 5, dust ring 6, spring 7, bearing 8, ring gear 9, excitation rotor assembly 10, coil block 11, magnetic conductor 12, bearing seat 13, every magnetic axis bolster 14, permanent magnet sensor assembly 15, electric connector 16, p-m rotor assembly 17, large sleeve 18, magnetism isolating spacer ring 19, half round pin 20, little bearing 21, small sleeve 22.
As shown in Figure 2, housing 1 is the carrier of the present embodiment.Housing 1 is the hollow solid of revolution, and endoporus is stepped;
The maximum diameter of hole of housing 1 endoporus and ring gear 9, magnetic conductor 12, bearing seat 13, identical every the maximum outside diameter of magnetic axis bolster 14, magnetism isolating spacer ring 19 and permanent magnet sensor assembly 15.The small-bore of the endoporus of this housing 1 is identical with the external diameter of bearing 8.The ring flange that the end face that housing 1 is adjacent with bearing 8 is connected with the wheel axle for this housing 1.
The inside surface that permanent magnet sensor assembly 15 1 ends are installed in described housing has the line outlet groove with the housing shaft line parallel.Permanent magnet sensor assembly 15 is positioned at housing, and is in housing electric connector 16 1 ends, the rotating shaft of this permanent magnet sensor assembly 15 are arranged.
At the bottom of ring gear 9 is arranged on the hole in housing 1 large diameter hole.Dust ring 6, spring 7, bearing 8 are positioned at the little inner diameter hole of housing 1, little inner diameter hole one end of housing 1 that bearing 8 is installed.The little internal diameter internal circular surfaces of the outer round surface of the outer round surface of bearing 8 and housing 1 and between equal interference fit; 8 one end faces of bearing are pressed on the end face of ring gear 9, and another end face of bearing 8 is pressed on spring 7.Elastic collar 5 is stuck in the groove of little inner diameter hole one end of housing 1, and dust ring 6 and spring 7 are carried out axial location.Excitation rotor assembly 10 is positioned at housing.And the fluted disc 24 of this excitation rotor assembly 10 is arranged in the endoporus of ring gear 9; Be arranged in described fluted disc 24 1 end end face excitation rotor assembly axles 23 bearing 8 endoporus of packing into, the axle that is arranged in described fluted disc 24 other ends endoporus of coil block 11 of packing into is connected with axle on p-m rotor assembly 17.The bearing seat 13 of magnetic conductor 12, be arranged on successively in the endoporus of housing every magnetic axis bolster 14, magnetism isolating spacer ring 19 and permanent magnet sensor assembly 15, be clearance fit between the large diameter internal circular surfaces of the outer round surface of above-mentioned each part and housing 1.Magnetic conductor 12 1 end end faces contact with an end face of ring gear 9; Magnetic conductor 12 other ends are positioned at bearing seat 13 places of little bearing 21.Coil block 11 is packed in the endoporus of magnetic conductor 12.End face of bearing seat 13 and an end contact of magnetic conductor 12; An end contact of another end face of bearing seat 13 and magnetism isolating spacer ring 19.Described magnetism isolating spacer ring 19 is arranged in large sleeve 18.Every end face of magnetic axis bolster 14 and another end contact of magnetism isolating spacer ring 19; Every another end face of magnetic axis bolster 14 and the end contact of permanent magnet sensor assembly 15.Large sleeve 18 is arranged on magnetism isolating spacer ring 19 and in the endoporus of magnetic axis bolster 14.Electric connector 16 is fixed by screws on the outer face of permanent magnet sensor assembly 15.Shift fork 2 is fixed on the termination of axle 23 by key 4, small sleeve 22 is contained in the termination of axle 23, with half round pin 20 stop and locked with nut 3.
Shift fork 2 is " U " shape plate.An end at shift fork 2 has the via hole of axle 23 and the groove of mounting nuts 3.The width of " U " shape groove of described shift fork 2 and the diameter of the pulling axis on wheel adapt.
Described excitation rotor assembly 10 comprises axle 23 and fluted disc 24.Fluted disc 24 is "T"-shaped structure, is comprised of dish axle and card.Be evenly equipped with several teeth on the card excircle of described fluted disc 24, space width is 1.5mm, and the facewidth is 2mm, and tooth depth is 0.5mm; The quantity of described tooth requires definite according to system testing, in the present embodiment, the quantity of tooth is 50.Tooth on fluted disc 24 excircles and the tooth on the ring gear internal circular surfaces match, and produce magnetic resistance change rate by when dislocation at the bottom of the tooth top tooth.Described dish axle is positioned at the center of a card and mutually vertical with card; The shaft end head of this dish axle is connected with the axle of p-m rotor assembly 17.The blind hole that coupling shaft 23 is arranged at the center of another card of fluted disc 24 cards; The axle head of described axle 23 is packed in this blind hole and is affixed.
On the circumference of axle 23 and fluted disc 24 fixed connecting ends, radially through hole is arranged, at the end center of axle 23 and fluted disc 24 fixed connecting ends, axially extended blind hole is arranged, and this blind hole is communicated with radially through hole on fluted disc 24 circumference, consisted of criss-cross scolder and exported.Circumferential surface at axle 23 other ends is flank of thread, and has the mounting groove with key 4 on this flank of thread.
Magnetic conductor 12 is a hollow solid of revolution.On the internal diameter of the center pit of this magnetic conductor 12 and excitation rotor assembly 10, the external diameter of dish axle is identical.Have ring groove on the housing of described magnetic conductor 12, be used for hookup wire coil assembly 11.
Ring gear 9 is circular.Be evenly equipped with several teeth at ring gear 9 internal circular surfaces, the quantity of this tooth is identical with the number of teeth of fluted disc 24 in the excitation rotor assembly, and in the present embodiment, the quantity of tooth is 50.The spacing of described tooth is 1.5mm, and the facewidth is 2mm, and tooth depth is 0.5mm.When ring gear 9 and fluted disc 24 cooperatively interact, the gap of 0.1mm is arranged between the tooth top surface of the tooth top surface of described ring gear 9 and fluted disc 24, and when the initial position that ring gear 9 and fluted disc 24 cooperatively interact, the tooth top of ring gear 9 is relative with the tooth top of fluted disc 24.When fluted disc 24 rotated, along with the variation of ring gear 9 with fluted disc 24 relative positions, the magnetic gap between ring gear 9 and fluted disc 24 formed the variation that convex-concave is staggered.
Coil block 11 comprises field coil skeleton 25, enameled wire 26, insulation film 27 and fluoroplastic wire 28.Enameled wire 26 tops are reserved approximately after 150mm by winder on skeleton 25.Often add one deck insulation film 27 in the middle of the coast of paint envelope curve, wind the line complete, fluoroplastic wire 28 is divested 3~4mm, and undertaken stranded by former twisted state.Enameled wire top and end are removed the insulation enamelled coating with fine sandpaper, be wrapped in respectively fluoroplastic wire 28 ends by the hand of spiral, with scolder HLSnPbSb-0.8 welding.
Be a hollow solid of revolution every magnetic axis bolster 14, endoporus is stepped.The maximum diameter of hole of endoporus is identical with the maximum outside diameter of large sleeve 18, and the small-bore end is p-m rotor assembly 17 via holes, and on cylindrical, symmetry has groove, is used for threading.
First the axle 23 of excitation rotor assembly 10 is passed bearing 8, spring 7 dust ring 6 elastic collars 5 and housings 1 successively during assembling, and by 4 pairs of bearings 8 of key and housing 1 axial location, and then other parts are packed into successively.
the double-joint type four remaining wheel spin-up transducer courses of work are, when being connected the gear train rotation that connects with shift fork, driving shift fork 2 rotates together, the excitation rotor assembly 10 that connects of being connected with shift fork also rotates thereupon, also driving simultaneously p-m rotor assembly 17 rotates, on the one hand the fluted disc 24 on excitation rotor assembly 10 is aimed at the rectangular teeth on ring gear 9, depart from alternately and occur, cause the magnetic resistance cyclical variation in closed magnetic circuit, magnetic flux in magnetic circuit also synchronously changes thereupon, so produce the induced voltage that a near sinusoidal identical with the magnetic resistance change rate frequency changes on coil, obtain being directly proportional to the wheel rotating speed and have the frequency signal of certain voltage, while is with the rotation of p-m rotor assembly 17, also obtain the frequency signal that other one group of permanent magnet sensor assembly 15 produces.

Claims (7)

1. double-joint type four remaining wheel spin-up transducers, it is characterized in that, comprise housing, shift fork, dust ring, spring, bearing, ring gear, excitation rotor assembly, coil block, magnetic conductor, bearing seat, every magnetic axis bolster, permanent magnet sensor assembly, electric connector, p-m rotor assembly, large sleeve, magnetism isolating spacer ring, little bearing, small sleeve; The permanent magnet sensor assembly is positioned at housing, and is in housing electric connector one end is arranged, at the bottom of ring gear is arranged on the hole in housing large diameter hole; Dust ring, spring, bearing are positioned at the little inner diameter hole of housing, little inner diameter hole one end of housing that bearing is installed; Equal interference fit between the little internal diameter internal circular surfaces of the outer round surface of bearing and housing; End face of bearing is pressed on the end face of ring gear, and another end face of bearing is pressed on spring; Elastic collar is stuck in the groove of little inner diameter hole one end of housing; The excitation rotor assembly is positioned at housing; And the fluted disc of this excitation rotor assembly is arranged in the endoporus of ring gear; Be arranged in the described fluted disc one end end face excitation rotor assembly axle brearing bore of packing into, the axle that is arranged in the described fluted disc other end endoporus of coil block of packing into and is connected with axle on the p-m rotor assembly; The bearing seat of magnetic conductor, be arranged on successively in the endoporus of housing every magnetic axis bolster, magnetism isolating spacer ring and permanent magnet sensor assembly, be clearance fit between the large diameter internal circular surfaces of the outer round surface of above-mentioned each part and housing; Magnetic conductor one end end face contacts with an end face of ring gear; The magnetic conductor other end is positioned at the bearing seat place of little bearing; Coil block is packed in the endoporus of magnetic conductor; End face of bearing seat and an end contact of magnetic conductor; An end contact of another end face of bearing seat and magnetism isolating spacer ring; Described magnetism isolating spacer ring is arranged in large sleeve; Every end face of magnetic axis bolster and another end contact of magnetism isolating spacer ring; Every another end face of magnetic axis bolster and the end contact of permanent magnet sensor assembly; Large sleeve is arranged on the magnetism isolating spacer ring and in the endoporus of magnetic axis bolster; Electric connector is fixed on the outer face of permanent magnet sensor assembly; Shift fork is fixed on the termination of axle, and small sleeve is fixed on the termination of axle.
2. a kind of double-joint type four remaining wheel spin-up transducers as claimed in claim 1, is characterized in that, described excitation rotor assembly comprises axle and fluted disc; Be evenly equipped with several teeth that matches with tooth on the ring gear internal circular surfaces on the card excircle of described fluted disc; Center in another card of fluted disc card is connected with axle.
3. a kind of double-joint type four remaining wheel spin-up transducers as claimed in claim 1, is characterized in that, on the internal diameter of the center pit of magnetic conductor and excitation rotor assembly, the external diameter of dish axle is identical; Have the ring groove of hookup wire coil assembly on the housing of described magnetic conductor.
4. a kind of double-joint type four remaining wheel spin-up transducers as claimed in claim 1, is characterized in that, is evenly equipped with several teeth at the ring gear internal circular surfaces; Gapped between the tooth top surface of described ring gear and the tooth top surface of fluted disc, and when the initial position that ring gear and fluted disc cooperatively interact, the tooth top of ring gear is relative with the tooth top of fluted disc.
5. a kind of double-joint type four remaining wheel spin-up transducers as claimed in claim 1, is characterized in that, identical with the maximum outside diameter of large sleeve every the maximum diameter of hole of magnetic axis bolster endoporus, the small-bore end is p-m rotor assembly via hole, and on cylindrical, symmetry has Wire channel in building.
6. a kind of double-joint type four remaining wheel spin-up transducers as claimed in claim 1, is characterized in that the maximum diameter of hole of housing endoporus and ring gear, magnetic conductor, bearing seat, identical every the maximum outside diameter of magnetic axis bolster, magnetism isolating spacer ring and permanent magnet sensor assembly; The small-bore of the endoporus of this housing is identical with the external diameter of bearing; The ring flange that the end face that housing is adjacent with bearing is connected with the wheel axle for this housing; The inside surface that permanent magnet sensor assembly one end is installed in described housing has the line outlet groove with the housing shaft line parallel.
7. a kind of double-joint type four remaining wheel spin-up transducers as claimed in claim 2, is characterized in that, in axle and the scolder outlet cruciferous of fluted disc fixed connecting end; The circumferential surface of the axle other end is flank of thread, and has keyway on this flank of thread.
CN 201210002176 2012-01-05 2012-01-05 Double-section type four-redundancy airplane wheel velocity sensor Expired - Fee Related CN102565449B (en)

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CN 201210002176 CN102565449B (en) 2012-01-05 2012-01-05 Double-section type four-redundancy airplane wheel velocity sensor

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Application Number Priority Date Filing Date Title
CN 201210002176 CN102565449B (en) 2012-01-05 2012-01-05 Double-section type four-redundancy airplane wheel velocity sensor

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CN104897922B (en) * 2015-06-29 2017-12-05 贵州新安航空机械有限责任公司 A kind of contactless Hall magnetic induction type wheel spin-up transducer
CN105203791A (en) * 2015-09-24 2015-12-30 西安航空制动科技有限公司 Wrong-inserting preventing speed sensor
CN105841605A (en) * 2016-04-25 2016-08-10 北京青云航空仪表有限公司 Quad redundant angular displacement sensor
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
CN108761116B (en) * 2018-07-27 2024-04-19 西安航空制动科技有限公司 Speed sensor for hollow wheel
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
CN110186685A (en) * 2019-04-17 2019-08-30 重庆彤星科技有限公司 A kind of automobile engine dynamic date reading device

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