CN109406821B - Variable-reluctance wheel speed sensor - Google Patents
Variable-reluctance wheel speed sensor Download PDFInfo
- Publication number
- CN109406821B CN109406821B CN201811090722.5A CN201811090722A CN109406821B CN 109406821 B CN109406821 B CN 109406821B CN 201811090722 A CN201811090722 A CN 201811090722A CN 109406821 B CN109406821 B CN 109406821B
- Authority
- CN
- China
- Prior art keywords
- rod
- magnetic
- gear
- speed sensor
- wheel speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a variable magnetic resistance type wheel speed sensor which comprises a shell, wherein a cavity with an opening at one end is formed in the side wall of one side of the shell, a rod part of a gear with a rod extends into the cavity and penetrates through a magnetic sleeve, the outer surface of part of the outer surface of the magnetic sleeve is matched with the inner surface of the cavity, two rolling bearings are arranged between the inner surface of the magnetic sleeve and the outer surface of the rod part of the gear with the rod, and a bushing is arranged on the outer surface of the rod part of the gear with the rod between; a spring is arranged between the bushing and the magnetic sleeve; the tail end of the rod part of the belt rod gear is connected with a fluted disc, and the upper half part of the fluted disc is provided with rectangular teeth; a hole extending downwards from the top is formed in the shell along the vertical direction, and the axis of the hole corresponds to the position of the rectangular tooth of the fluted disc; a coil assembly is arranged in the hole, and a permanent magnetic alloy coaxial with the coil assembly is arranged above the coil assembly; the shell is also provided with a socket which can prevent the airplane wheel from locking.
Description
Technical Field
The invention belongs to the field of electromagnetic anti-skid brake systems of trainers, and relates to a variable magnetic resistance type wheel speed sensor.
Background
With the continuous development of the aviation industry, various brake system accessories which have important influence on the safety of the airplane are more and more important, and at present, almost all airplanes are provided with an airplane wheel speed sensor. The wheel speed sensor is an important component of the braking system and is used for detecting the wheel speed and generating a frequency signal which is proportional to the wheel speed and is provided to the braking control box. The pressure of a brake system is controlled by the brake control box according to the speed of the airplane wheel, so that the occurrence of unallowed sliding during braking is prevented, and the requirement on the running distance of takeoff and landing of the airplane is met. Therefore, the quality of the wheel speed sensor directly influences the quality of the airplane brake system.
Disclosure of Invention
Object of the Invention
In order to solve the above problems, the present invention provides a variable reluctance wheel speed sensor, which can prevent the wheel from locking.
Technical solution of the invention
In order to achieve the purpose, the invention adopts the following technical scheme:
a variable magnetic resistance type wheel speed sensor comprises a shell, wherein a cavity with an opening at one end is formed in the side wall of one side of the shell, a rod part of a gear with a rod extends into the cavity and penetrates through a magnetic conductive sleeve, the outer surface of part of the outer surface of the magnetic conductive sleeve is matched with the inner surface of the cavity, two rolling bearings are arranged between the inner surface of the magnetic conductive sleeve and the outer surface of the rod part of the gear with the rod, and a lining is arranged on the outer surface of the rod part of the gear with; a spring is arranged between the bushing and the magnetic sleeve; the tail end of the rod part of the belt rod gear is connected with a fluted disc, and the upper half part of the fluted disc is provided with rectangular teeth; a hole extending downwards from the top is formed in the shell along the vertical direction, and the axis of the hole corresponds to the position of the rectangular tooth of the fluted disc; a coil assembly is arranged in the hole, and a permanent magnetic alloy coaxial with the coil assembly is arranged above the coil assembly; the shell is also provided with a socket.
Preferably, the fluted disc is made of high-permeability magnetic materials.
Preferably, the magnetic sleeve and the cavity of the shell are sealed through a sealing ring.
Preferably, in order to ensure that the toothed disc and the gear on the wheel are correctly meshed, the toothed disc and the rod part of the toothed disc are in key connection, and the toothed disc is provided with a special gasket for locking the toothed disc.
Preferably, in order to prevent the magnetic field from closing the loop and cannot induce the magnetic field intensity change when the wheel gear rotates, the shell is made of a non-magnetic conductive material.
Preferably, in order to improve the magnetic field intensity, the permanent magnetic alloy and the coil assembly form a magnetic field, and when the fluted disc rotates to cut magnetic lines of force, a sinusoidal alternating-current voltage signal is output.
Preferably, in order to ensure the accuracy of the output signal and the interference between the fluted disc and the coil assembly, the clearance between the rectangular teeth of the fluted disc and the coil assembly is 0-0.1 mm.
THE ADVANTAGES OF THE PRESENT INVENTION
The invention has the advantages that:
the wheel speed sensor is driven by the wheel to rotate through the belt rod gear, the rectangular teeth of the fluted disc and the permanent magnetic alloy are aligned or deviated alternately to cause the magnetic resistance in a magnetic circuit to be changed periodically, so that the coil outputs sinusoidal induction voltage for converting the speed of the wheel into sinusoidal alternating current voltage information and transmitting the sinusoidal alternating current voltage information to the electromagnetic anti-skid brake system control box, and the control box controls the pressure of the brake system according to voltage signals to prevent the wheel from being locked.
Drawings
Fig. 1 is a schematic structural diagram of a variable reluctance wheel speed sensor according to the present invention.
In the figure: 1-gear with rod, 2-gasket, 3-rolling bearing, 4-spring, 5-sealing ring, 6-bushing, 7-magnetic conductive sleeve, 8-fluted disc, 9-special gasket, 10-key, 11-shell, 12-coil component, 13-permanent magnetic alloy and 14-socket.
Detailed Description
The detailed description of the embodiments of the present invention is provided in conjunction with the summary of the invention and the accompanying drawings.
A variable magnetic resistance type wheel speed sensor comprises a shell 11, wherein a cavity with an opening at the left end is formed in the side wall of the left side of the shell 11, a rod part of a gear with a rod 1 extends into the cavity and penetrates through a magnetic conductive sleeve 7, part of the outer surface of the magnetic conductive sleeve 7 is matched with the inner surface of the cavity, two rolling bearings 3 are arranged between the inner surface of the magnetic conductive sleeve 7 and the outer surface of the rod part of the gear with a rod 1, the two rolling bearings 3 are positioned by the inner surface of the magnetic conductive sleeve 7, and a lining 6 is arranged between the two rolling bearings 3 and on the; a spring 4 is arranged between the bush 6 and the magnetic conductive sleeve 7, one end of the spring 4 is contacted with the rolling bearing 3, and the other end is contacted with the inner surface of the magnetic conductive sleeve 7; the tail end of the rod part of the gear 1 with the rod is connected with a fluted disc 8, the upper half part of the fluted disc 8 is provided with rectangular teeth, a gap of 0-0.1 mm is formed between the outer edges of the rectangular teeth and the lower surface of the coil assembly 12, and the tail end of the fluted disc 8 is provided with a special gasket 9; a hole extending downwards from the top is formed in the shell 11 along the vertical direction, and the axis of the hole corresponds to the position of the rectangular teeth of the fluted disc 8 and is communicated with the inner surface of the shell 11; a coil assembly 12 is arranged in the hole, a permanent magnetic alloy 13 which is coaxial with the coil assembly 12 is arranged above the coil assembly 12, and the outer part of the permanent magnetic alloy 13 is sealed by a shell; a socket 14 is also provided on the housing 11. The fluted disc 8 is made of high-permeability magnetic materials. The magnetic sleeve 7 and the cavity of the shell 11 are sealed through a sealing ring 5. The fluted disc 8 and the rod part of the gear with the rod 1 are connected through keys.
The working principle is as follows:
the rectangular teeth of the fluted disc 8 are aligned with or deviate from the permanent magnetic alloy 13 to cause the magnetic resistance in a magnetic circuit to be periodically changed, so that the coil in the coil assembly 12 outputs sinusoidal induction voltage for converting the speed of the airplane wheel into sinusoidal alternating voltage information and transmitting the sinusoidal alternating voltage information to the electromagnetic anti-skid braking system control box, and the control box controls the pressure of the braking system according to the voltage signal to prevent the airplane wheel from being locked.
Claims (6)
1. A variable magnetic resistance type wheel speed sensor is characterized by comprising a shell (11), wherein a cavity with an opening at one end is formed in the side wall of one side of the shell (11), the rod part of a gear (1) with a rod extends into the cavity and penetrates through a magnetic sleeve (7), part of the outer surface of the magnetic sleeve (7) is matched with the inner surface of the cavity, two rolling bearings (3) are arranged between the inner surface of the magnetic sleeve (7) and the outer surface of the rod part of the gear (1) with the rod, and a lining (6) is arranged on the outer surface of the rod part of the gear (1) with the rod between the two rolling bearings (3); a spring (4) is arranged between the bushing (6) and the magnetic sleeve (7); the tail end of the rod part of the belt rod gear (1) is connected with a fluted disc (8), and rectangular teeth are arranged at the upper half part of the fluted disc (8); a hole extending downwards from the top is formed in the shell (11) along the vertical direction, and the axis of the hole corresponds to the position of the rectangular teeth of the fluted disc (8); a coil component (12) is arranged in the hole, and a permanent magnet alloy (13) which is coaxial with the coil component (12) is arranged above the coil component (12); a socket (14) is also arranged on the shell (11); the permanent magnetic alloy (13) and the coil assembly (12) form a magnetic field, and when the fluted disc (8) rotates to cut magnetic lines, a sinusoidal alternating-current voltage signal is output.
2. The variable reluctance wheel speed sensor according to claim 1, wherein the toothed disc (8) is made of a highly magnetic conductive material.
3. The variable reluctance wheel speed sensor according to claim 1, wherein the magnetic conductive sleeve (7) and the cavity of the housing (11) are sealed by a sealing ring (5).
4. The variable reluctance wheel speed sensor according to claim 1, wherein the toothed disc (8) and the rod portion of the rod gear (1) are connected by a key, and the toothed disc (8) is provided with a special washer (9) for locking the toothed disc (8).
5. A variable reluctance wheel speed sensor as claimed in claim 1, wherein the housing (11) is made of a non-magnetically conductive material.
6. The variable reluctance wheel speed sensor according to claim 1, wherein the clearance between the rectangular teeth of the toothed disc (8) and the coil block (12) is 0 to 0.1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811090722.5A CN109406821B (en) | 2018-09-18 | 2018-09-18 | Variable-reluctance wheel speed sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811090722.5A CN109406821B (en) | 2018-09-18 | 2018-09-18 | Variable-reluctance wheel speed sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109406821A CN109406821A (en) | 2019-03-01 |
| CN109406821B true CN109406821B (en) | 2020-12-18 |
Family
ID=65465038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811090722.5A Active CN109406821B (en) | 2018-09-18 | 2018-09-18 | Variable-reluctance wheel speed sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109406821B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5291130A (en) * | 1993-01-25 | 1994-03-01 | Eaton Corporation | Vehicle wheel speed sensor employing an adaptable rotor cap |
| CN102495228A (en) * | 2011-11-22 | 2012-06-13 | 西安航空制动科技有限公司 | Permanent-magnet type airplane wheel speed sensor |
| CN102565449A (en) * | 2012-01-05 | 2012-07-11 | 西安航空制动科技有限公司 | Double-section type four-redundancy airplane wheel velocity sensor |
| CN104198753A (en) * | 2014-08-25 | 2014-12-10 | 贵州新安航空机械有限责任公司 | Permanent magnet type dual-redundancy machine wheel speed sensor |
| CN204719065U (en) * | 2015-06-16 | 2015-10-21 | 西安航空制动科技有限公司 | A kind of water proof type speed pickup |
-
2018
- 2018-09-18 CN CN201811090722.5A patent/CN109406821B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5291130A (en) * | 1993-01-25 | 1994-03-01 | Eaton Corporation | Vehicle wheel speed sensor employing an adaptable rotor cap |
| CN102495228A (en) * | 2011-11-22 | 2012-06-13 | 西安航空制动科技有限公司 | Permanent-magnet type airplane wheel speed sensor |
| CN102565449A (en) * | 2012-01-05 | 2012-07-11 | 西安航空制动科技有限公司 | Double-section type four-redundancy airplane wheel velocity sensor |
| CN104198753A (en) * | 2014-08-25 | 2014-12-10 | 贵州新安航空机械有限责任公司 | Permanent magnet type dual-redundancy machine wheel speed sensor |
| CN204719065U (en) * | 2015-06-16 | 2015-10-21 | 西安航空制动科技有限公司 | A kind of water proof type speed pickup |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109406821A (en) | 2019-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5488287A (en) | Method of producing electrical energy by means of generators and use of the method in vehicles with anti-skid systems | |
| CN104698212B (en) | Multichannel Hall revolution speed transducer | |
| US3683219A (en) | Measurement-sensing device for determining a rotational speed or rotational speed change, preferably of vehicle wheels | |
| US20040100251A1 (en) | Active magnetic field sensor, use thereof, method and device | |
| CN109406821B (en) | Variable-reluctance wheel speed sensor | |
| CN205027774U (en) | Wheel speed measuring device based on vehicle semi -axis | |
| CN101392800A (en) | Assembly forming a roller bearing equipped with an information gathering system | |
| CN204832234U (en) | Hall magnetic induction type wheel speedtransmitter | |
| CN104897922A (en) | Non-contact Hall magnetic induction-type airplane wheel speed sensor | |
| US9718539B2 (en) | Aircraft landing gear | |
| CN201242550Y (en) | Electromagnetical automobile wheel speed sensor | |
| CN203941183U (en) | Six passage locomotive shaft-end speed probes | |
| CN205860978U (en) | A kind of multichannel differential transformer displacement transducer | |
| CN201965143U (en) | Hall ABS (anti-lock brake system) sensor | |
| CN204422562U (en) | New A BS wheel speed sensors | |
| CN203126837U (en) | Steering wheel steering angle sensor device | |
| CN202661476U (en) | Velocity sensor and traction motor rotor velocity measuring system | |
| US10960864B2 (en) | Dual speed and position wheel transducer | |
| CN104198753A (en) | Permanent magnet type dual-redundancy machine wheel speed sensor | |
| CN208588392U (en) | A kind of magnetic encoder | |
| CN107576295B (en) | High-speed linear displacement sensing detection device for motor rotor | |
| CN104251657A (en) | Displacement sensor | |
| CN208190463U (en) | A kind of compact-sized high precision velocity feedback hub motor | |
| CN106224446A (en) | Automobile direction sensor and automobile | |
| CN205426945U (en) | Aviation speed sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |