CN219245585U - Device for vibration test of airplane wheel speed sensor - Google Patents
Device for vibration test of airplane wheel speed sensor Download PDFInfo
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- CN219245585U CN219245585U CN202223150156.7U CN202223150156U CN219245585U CN 219245585 U CN219245585 U CN 219245585U CN 202223150156 U CN202223150156 U CN 202223150156U CN 219245585 U CN219245585 U CN 219245585U
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Abstract
The utility model provides a device for vibration test of an airplane wheel speed sensor, which belongs to the technical field of airplane brake control system test, and comprises: the control box is electrically connected with a power supply, a wheel speed sensor and a motor; the mounting plate is fixed on the vibration test bed, and the product seat, the motor seat and the protective cover are fixed on the mounting plate; the driving head is fixed with a motor shaft of the motor, and one side of the driving head is connected with an elastic joint of the wheel speed sensor; the protective cover covers the driving head; a motor is fixed on one side end surface of the motor seat; the utility model can drive the wheel speed sensor, the wheel speed sensor works, has output signals, can completely simulate the vibration working condition of the aircraft in the whole process of taking off, running and landing, has more sufficient vibration test verification of the wheel speed sensor, and can comprehensively check the working performance of the wheel speed sensor under vibration.
Description
Technical Field
The utility model belongs to the technical field of airplane brake control system tests, and particularly relates to a device for vibration test of an airplane wheel speed sensor.
Background
The wheel speed sensor is an important component of an aircraft brake control system, is arranged in a main landing gear wheel shaft and is used for detecting the wheel speed; in the normal braking process of the aircraft, the wheel speed sensor generates a voltage signal proportional to the wheel speed and provides the voltage signal for the brake control unit, and the brake control unit regulates the braking pressure of the system to perform anti-skid braking according to the acquired wheel speed and pedal command signals, so that the aircraft is ensured to be braked stably and safely. During landing and taxiing of an aircraft, the stability of the wheel speed sensor is affected by vibration caused by impact load due to uneven airport runway. Therefore, vibration testing of the wheel speed sensor is required.
At present, a vibrating table is often adopted to drive a wheel speed sensor to vibrate, the wheel speed sensor cannot be driven, the wheel speed sensor does not work, and no output signal is generated, so that the vibration working condition of the aircraft in the whole process of taking off, running and landing cannot be completely simulated, the vibration test of the wheel speed sensor is insufficient, and the working performance of the wheel speed sensor under vibration cannot be comprehensively checked.
Disclosure of Invention
In order to solve the technical problem that the vibration test process can not drive the airplane wheel speed sensor and detect the working performance of the airplane wheel speed sensor in the related art, the utility model provides a device for the vibration test of the airplane wheel speed sensor, which comprises:
an apparatus for vibration testing of an aircraft wheel speed sensor, the apparatus being secured to a vibration test stand, the apparatus comprising: control box, mounting plate, product seat, driving head, protective cover, motor seat and motor,
the control box is electrically connected with a power supply, a wheel speed sensor and a motor; the mounting plate is fixed on the vibration test bed, and the product seat, the motor seat and the protective cover are fixed on the mounting plate; the driving head is fixed with a motor shaft of the motor, and one side of the driving head is connected with an elastic joint of the wheel speed sensor; the protective cover covers the driving head; the motor is fixed on the end face of one side of the motor seat.
Optionally, a plurality of first mounting holes are distributed on the outermost ring of the mounting plate and are used for fixing the mounting plate on the vibration test bed; the left side of the inside is provided with a plurality of second mounting holes which are vertically symmetrically distributed and used for fixing the product seat on the mounting plate; the inside right side is upper and lower symmetric distribution and has a plurality of third mounting holes for fix the motor cabinet above the mounting panel.
Optionally, the whole product seat is arch-shaped, the top of the product seat is provided with a round hole, the dimension of the round hole is consistent with the outline dimension of the airplane wheel speed sensor, and a plurality of mounting holes are uniformly distributed on the end surface of one side in the radial direction; the bottom surface is a mounting flat plate, and a plurality of mounting holes are uniformly distributed on two sides of the mounting flat plate.
Optionally, the whole hollow axle sleeve structure that is of driving head is equipped with the keyway in inside for it is fixed with the motor shaft of motor, and driving head one side is equipped with two transmission driving levers, and the central line symmetric distribution of transmission driving lever about the keyway, the cross-section of transmission driving lever are fan-shaped, and transmission driving lever terminal surface is equipped with the installation and guides the chamfer, is used for linking to each other with quick-witted wheel speed sensor's elastic joint.
Optionally, the whole protective cover is arch-shaped, and the upper half part is semicircular; the bottom both sides symmetry distributes a plurality of mounting holes for fix the shield lid on the mounting panel.
Optionally, the whole motor base is arch-shaped, the top is provided with a stepped bushing circular hole, and a plurality of countersunk threaded holes are uniformly distributed on the end surface of one side along the radial direction and are used for installing and fixing the motor; the bottom surface is an installation flat board, and a plurality of fourth mounting holes are uniformly distributed on two sides and are used for fixing the motor base on the installation plate.
Optionally, the middle part of the product seat is a rectangular through hole.
Optionally, the middle part of the motor base is a rectangular through hole.
The utility model has the advantages that:
the utility model provides a device for vibration test of an airplane wheel speed sensor, which comprises: the device comprises a control box, a mounting plate, a product seat, a driving head, a protective cover, a motor seat and a motor, wherein the motor rotates and drives a wheel speed sensor to rotate through the driving head; when the vibration test bed works, the simulation of the vibration condition of the wheel speed sensor in the aircraft landing and braking process can be realized, meanwhile, the touch screen display of the control box can display the information required by the motor rotating speed, the output waveform, the amplitude, the frequency and the like of the wheel speed sensor in real time, and the performance test and the monitoring of the wheel speed sensor in the vibration process are realized. The utility model can drive the wheel speed sensor, the wheel speed sensor works, has output signals, can completely simulate the vibration working condition of the aircraft in the whole process of taking off, running and landing, has more sufficient vibration test verification of the wheel speed sensor, and can comprehensively check the working performance of the wheel speed sensor under vibration.
Drawings
FIG. 1 is a schematic diagram of a device for vibration testing of an aircraft wheel speed sensor according to the present utility model;
FIG. 2 is a schematic diagram of the working principle of the control box provided by the utility model;
FIG. 3 is a schematic view of a mounting plate provided by the present utility model;
FIG. 4 is a schematic view of a product holder provided by the present utility model;
FIG. 5 is a schematic view of a drive head provided by the present utility model;
FIG. 6 is a schematic view of a protective cover provided by the present utility model;
fig. 7 is a schematic diagram of a motor base provided by the utility model.
Detailed Description
The utility model is described in further detail below with reference to specific embodiments and figures.
With the development of civil aircraft, the landing speed and weight of the aircraft are gradually increased, the safety problem in the landing process is increasingly outstanding, the requirements on the performance and reliability of a braking system are also increasingly high, the output stability of a wheel speed sensor in the landing process directly influences the skid resistance and the safety braking of the aircraft, and the life safety of passengers is related. Meanwhile, the standard vibration test of chapter 8 of RTCA/DO-160G airborne equipment environmental conditions and test procedures requires that the product work normally and ensure performance during the vibration process.
The present embodiment provides an apparatus for vibration testing of a wheel speed sensor of an aircraft, the apparatus being fixed to a vibration test stand 10, as shown in fig. 1, the apparatus comprising: control box 1, mounting panel 3, product seat 5, drive head 6, shield cover 7, motor cabinet 8 and motor 9.
The control box 1 is electrically connected with a power supply, the control box 1 is electrically connected with a wheel speed sensor 4, and the control box 1 is electrically connected with a motor 9 through a cable 2; the mounting plate 3 is fixed on the vibration test stand 10, and the product seat 5, the motor seat 8 and the protective cover 7 are fixed on the mounting plate 3; the driving head 6 is fixed with a motor shaft of the motor 9, and one side of the driving head 6 is connected with an elastic joint of the wheel speed sensor 4; the protective cover 7 covers the drive head 6; the motor 9 is fixed on one side end surface of the motor seat 8.
The product seat 5 is used for installing and fixing the wheel speed sensor 4 and simulating the main landing gear wheel shaft of the airplane.
The driving head 6 is used for realizing connection between the motor 9 and the wheel speed sensor 4, converting motor rotation into wheel speed sensor rotation, and simulating the rotation working condition of the wheel speed sensor of the airplane wheel.
The motor mount 8 is used for mounting and fixing the motor 9.
The protective cover 7 plays a role in safety protection, prevents people from being injured due to the fact that the driving head 6 flies out, and can obviously observe the rotation condition of the wheel speed sensor.
Specifically, as shown in fig. 3, 4 first mounting holes are distributed on the outermost ring of the mounting plate 3 for fixing the mounting plate 3 on the vibration test stand 10; 4 second mounting holes are symmetrically distributed on the left side of the inside in an up-down manner and are used for fixing the product seat 5 on the mounting plate 3; the right side of the inside is provided with 6 third mounting holes which are vertically symmetrically distributed and used for fixing the motor base 8 on the mounting plate 3.
The product seat 5 is shown in fig. 4, is integrally arch-shaped, and has a round hole at the top, wherein the size of the round hole is consistent with the outline size of the airplane wheel speed sensor 4, 6 mounting holes are uniformly distributed on the end surface of one side in the radial direction, and when the product seat is mounted, the airplane wheel speed sensor 4 is placed in the round hole at the top and is fixed through radial bolts; the middle part is a rectangular through hole and has the main function of reducing weight; the bottom surface is a mounting plate, and two sides respectively evenly distributed 2 mounting holes are used for fixing the product seat 5 on the mounting plate 3.
The driving head 6 is in the form of a hollow shaft sleeve as shown in fig. 5, a key slot is arranged in the driving head 6 and is used for being fixed with a motor shaft of the motor 9, two transmission deflector rods are arranged on one side of the driving head 6 and symmetrically distributed relative to the central line of the key slot, the section of the transmission deflector rods is fan-shaped, and the end face of the transmission deflector rods is provided with an installation guide chamfer for being connected with an elastic joint of the wheel speed sensor 4.
The protective cover 7 is shown in fig. 6, is in an arch shape as a whole, and the upper half part of the protective cover is semicircular, so that the protective cover plays a role in safety protection, prevents external foreign matters from entering the drive head 6 and affecting the normal operation of the motor 9 due to the fact that the drive head 6 flies out, and can obviously observe the rotation condition of the wheel speed sensor 4; and 2 fourth mounting holes are symmetrically distributed on two sides of the bottom and are used for fixing the protective cover 7 on the mounting plate 3.
The motor base 8 is shown in fig. 7, is integrally arch-shaped, is provided with a stepped bushing circular hole at the top, and is provided with 4 countersunk threaded holes uniformly distributed along the radial direction on one side end surface for mounting and fixing a motor 9; the middle part is a rectangular through hole and has the main function of reducing weight; the bottom surface is an installation flat board, and 3 fifth mounting holes are uniformly distributed on two sides respectively and are used for fixing the motor base 8 on the installation plate 3.
As shown in FIG. 2, the control box mainly realizes the functions of motor rotation speed control, motor rotation speed, waveform output by a wheel speed sensor of the to-be-tested machine, frequency real-time display, test parameter setting input and the like. The control box 1 consists of a case, an AC-DC power supply, a motor control unit, a display control unit, a plug, a cable and the like.
Wherein, the chassis realizes the encapsulation of the control part components; the AC-DC power supply converts 220V into motor working voltage, and supplies power to the wheel speed sensor and other equipment; the motor control unit consists of a motor driver and a speed regulation control module, wherein the motor driver realizes direct control of the motor, and comprises rotating speed control, abnormal work protection and the like, and the speed regulation control module adopts an analog circuit for design, so that analog control of the motor driver is realized.
The display control unit consists of a CPU and a touch screen display, wherein the CPU realizes instruction control and operation data processing, and the touch screen display realizes real-time display of input of motor control parameters, motor rotation speed, output waveform and frequency of a wheel speed sensor to be tested. The CPU adopts an embedded architecture, the CPU carries out configuration and speed regulation control on the motor driver through a bus, and the CPU reads man-machine interaction information through a touch screen display to complete motor rotation speed information configuration, motor configuration information setting, motor driver parameter setting, motor operation (shutdown, startup, forward and reverse rotation) operation and the like; the CPU completes the data interaction of the output rotating speed of the motor through a bus, and reads the frequency and the output waveform of the sensing output signal to be detected; the CPU displays data and waveforms in real time through the bus and the touch screen display.
The plug and the cable realize the connection of the electric connection of the internal constituent units of the control box, the connection of an external power supply, the connection of an external motor and a sensor to be tested, and the cable is a shielding protection cable.
The motor is controlled by the control box, mainly realizes the rotation of the wheel speed sensor of the driving machine, selects the vibration-resistant motor, has the advantages of vibration resistance, stable starting voltage, small volume, large torsion, low noise, long service life, high efficiency and accurate precision, and can realize the random adjustment in the rotating speed range.
In the preparation stage of the vibration test of the wheel speed sensor 4, as shown in fig. 1, a motor 9 is fixed on the motor seat 8 through a countersunk threaded hole in the motor seat 8 by using countersunk screws, then the motor seat 8 is fixed on the mounting plate 3, then the driving head 6 is fixed on the rotating shaft of the motor 9 by using flat keys and radial set screws, then the wheel speed sensor 4 is installed in the product seat 5, after the elastic connector of the wheel speed sensor 4 and the driving head 7 are in matched connection, the wheel speed sensor 4 is fixed on the product seat 5 by using bolts, slotted nuts and cotter pins, then the product seat 5 is fixed on the mounting plate 3, and finally the mounting plate 3 is fixed on the vibration test stand 10.
The control box 1 is connected with a power supply, the control box 1 is connected with a wheel speed sensor 4 and a motor 9 by using a cable 2 in a circuit, the power supply is connected, the control box 1 is started, the corresponding motor rotating speed and the power supply required by a product 4 to be tested are set through touch screen operation, a program is started, and the motor 9 starts to rotate as required and drives the wheel speed sensor 4 to rotate through a driving head 7; when the vibration test stand 10 works, the simulation of the vibration condition of the airplane wheel speed sensor in the landing and braking process of the airplane can be realized, meanwhile, the touch screen display of the control box 1 can display the information required by the rotating speed of the motor 9, the waveform, the amplitude, the frequency and the like of the output of the airplane wheel speed sensor 4 in real time, and the performance test and the monitoring of the product to be tested in the vibration process are realized.
The foregoing has outlined rather broadly the more detailed description of the utility model in order that the detailed description thereof that follows may be better understood, and in order that the present utility model may be better understood. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. In addition, the utility model is not fully described in the conventional technology.
Claims (8)
1. An apparatus for vibration testing of an aircraft wheel speed sensor, the apparatus being secured to a vibration test stand (10), the apparatus comprising: a control box (1), a mounting plate (3), a product seat (5), a driving head (6), a protective cover (7), a motor seat (8) and a motor (9),
the control box (1) is electrically connected with a power supply, a wheel speed sensor (4) and a motor (9); the mounting plate (3) is fixed on the vibration test bed (10), and the product seat (5), the motor seat (8) and the protective cover (7) are fixed on the mounting plate (3); the driving head (6) is fixed with a motor shaft of the motor (9), and one side of the driving head (6) is connected with an elastic joint of the wheel speed sensor (4); the protective cover (7) covers the driving head (6); the motor (9) is fixed on one side end surface of the motor seat (8).
2. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
the outermost ring of the mounting plate (3) is distributed with a plurality of first mounting holes for fixing the mounting plate (3) on the vibration test stand (10); the left side of the inside is provided with a plurality of second mounting holes which are vertically and symmetrically distributed and used for fixing the product seat (5) on the mounting plate (3); the right side of the inside is provided with a plurality of third mounting holes which are used for fixing the motor base (8) on the mounting plate (3) in an up-down symmetrical mode.
3. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
the whole product seat (5) is arch-shaped, the top of the product seat is provided with a round hole, the dimension of the round hole is consistent with the outline dimension of the airplane wheel speed sensor (4), and a plurality of mounting holes are uniformly distributed on the end surface of one side in the radial direction; the bottom surface is a mounting flat plate, and a plurality of mounting holes are uniformly distributed on two sides of the mounting flat plate.
4. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
the whole hollow shaft sleeve structure that is of driving head (6), inside be equipped with the keyway for it is fixed with the motor shaft of motor (9), driving head (6) one side is equipped with two transmission driving levers, and the central line symmetric distribution of transmission driving lever about the keyway, the cross-section of transmission driving lever are fan-shaped, and transmission driving lever terminal surface is equipped with the installation and guides the chamfer, is used for linking to each other with the elastic joint of quick-witted wheel speed sensor (4).
5. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
the whole protective cover (7) is arch-shaped, and the upper half part is semicircular; a plurality of fourth mounting holes for fixing the protective cover (7) on the mounting plate (3) are symmetrically distributed on two sides of the bottom.
6. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
the motor base (8) is integrally arch-shaped, the top is provided with a stepped bushing circular hole, and a plurality of countersunk threaded holes are uniformly distributed on the end surface of one side along the radial direction and are used for installing and fixing a motor (9); the bottom surface is an installation flat plate, and a plurality of fifth installation holes for fixing the motor base (8) on the installation plate (3) are uniformly distributed on two sides of the installation flat plate.
7. The apparatus of claim 3, wherein the device comprises a plurality of sensors,
the middle part of the product seat (5) is a rectangular through hole.
8. The apparatus of claim 6, wherein the device comprises a plurality of sensors,
the middle part of the motor base (8) is a rectangular through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223150156.7U CN219245585U (en) | 2022-11-27 | 2022-11-27 | Device for vibration test of airplane wheel speed sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223150156.7U CN219245585U (en) | 2022-11-27 | 2022-11-27 | Device for vibration test of airplane wheel speed sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219245585U true CN219245585U (en) | 2023-06-23 |
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ID=86808342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223150156.7U Active CN219245585U (en) | 2022-11-27 | 2022-11-27 | Device for vibration test of airplane wheel speed sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219245585U (en) |
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2022
- 2022-11-27 CN CN202223150156.7U patent/CN219245585U/en active Active
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