Servo speed measurement unit structure with magnetic damper

Abstract

The utility model discloses a servo tachometer unit structure with a magnetic damper, and belongs to the technical field of aviation brake structures. Comprising a stator assembly (1), a rotor assembly (2), a damper assembly (3), a damper iron core (4), a pin (5) and a bearing (6). When the servo tachometer unit works, the rotor assembly 2 runs at a high speed, the rotor assembly 2 belongs to a conductor in a magnetic field of the stator assembly, the conductor cuts magnetic induction lines and generates induction current when moving, and the induction current generates ampere force opposite to the original moving direction of the conductor in a magnetic field provided by the damper assembly 3. Deceleration and stable control of the conductor, namely the rotor assembly 2, are realized; when the servo tachometer unit works, the rotor assembly rotates at a high speed, the magnetic damper provides a reverse magnetic field for the rotor assembly, deceleration and stable control over the rotor assembly are achieved, and the servo tachometer unit stops rotating quickly during high-speed work and works more efficiently.

Description

TECHNICAL FIELD

[0001] The utility model discloses a novel servo speed measuring unit structure with magnetic damper belongs to aviation brake structure technical field. BACKGROUND

[0002] The servo speed measuring unit for aviation belongs to the speed feedback element of high speed operation in positive and reverse directions, when the speed measuring machine is high speed operation, the inertia of rotor assembly is big, cannot stop the conversion of next direction fast, cannot realize stable control, so for this kind of high speed feedback element, need to adopt the magnetic damping design structure for the big rotor assembly of fast, stable braking inertia SUMMARY

[0003] The utility model discloses a purpose is: design a kind of high speed operation's speed measuring machine with magnetic damper can realize fast stable speed measuring machine, make servo speed measuring unit can work efficiently.

[0004] The utility model discloses a technical scheme is: a kind of servo speed measuring unit structure with magnetic damper, including stator assembly 1, rotor assembly 2, damper assembly 3, damper core 4, pin 5 and bearing 6;Stator assembly 1 is cooperated together with rotor assembly 2 using bearing 6, damper assembly 3 is cooperated together with stator assembly 1 using screw, damper core 4 is fixed together with rotor assembly 2 by pin 5.

[0005] The stator assembly 1 includes motor embedded wire assembly and motor housing and generator embedded wire assembly and generator housing, motor embedded wire assembly is pressed into motor housing, generator embedded wire assembly is pressed into generator housing, then generator housing and motor housing are laser welded

[0006] The rotor assembly 2 includes shaft, cast aluminum assembly and shaft sleeve, the shaft is pressed into the cast aluminum assembly, and then the shaft sleeve is fastened.

[0007] Damper assembly 3 includes flange plate and magnetic steel, the magnetic steel is adhered to the inner side of the flange plate with adhesive. After heat treatment, the magnetic steel has the following magnetic properties:

[0008] Br≮7500 Gauss;

[0009] Hc≮600 Gauss;

[0010] [BH]max≮1.6×10 6 Gauss·Oersted.

[0011] As shown in the drawing, the damper core 4 has a sheet structure, and the two ends are symmetrically milled flat, and pin holes are arranged on the two sides of the milled flat ends. Figure 3 The damper core 4 is made of soft magnetic alloy.

[0012]

[0013] ​The servo speed measuring machine set has the advantages that the rotor assembly 2 rotates at high speed during the operation of the servo speed measuring machine set, the rotor assembly 2 is a conductor in the magnetic field of the stator assembly, the conductor cuts the magnetic induction lines and generates induced current when moving, the induced current generates an Ampere force in the magnetic field provided by the damper assembly 3, the Ampere force is opposite to the original moving direction of the conductor, and the speed of the rotor assembly 2 is reduced and controlled stably; the rotor assembly rotates at high speed during the operation of the servo speed measuring machine set, the magnetic damper provides a reverse magnetic field for the rotor assembly, the speed of the rotor assembly is reduced and controlled stably, the servo speed measuring machine set is quickly stopped during high-speed operation, and the servo speed measuring machine set works more efficiently. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] Figure 2 It is a structural schematic view of the damper assembly 3;

[0016] Figure 3 It is a structural schematic view of the damper core 4 and an A-A sectional view.

[0017] Among them: 1 - stator assembly, 2 - rotor assembly, 3 - damper assembly, 4 - damper core, 5 - pin, 6 - bearing, 7 - flange, 8 - magnetic steel DETAILED DESCRIPTION

[0018] The utility model is further described below in connection with the drawings:

[0019] As Figure 1 Shown, a kind of servo speed measuring machine set structure with magnetic damper, including stator assembly 1, rotor assembly 2, damper assembly 3, damper core 4, pin 5 and bearing 6;Stator assembly 1 is cooperated together with rotor assembly 2 using bearing 6, damper assembly 3 is cooperated together with stator assembly 1 using screw, damper core 4 is fixed together with rotor assembly 2 by pin 5.

[0020] The stator assembly 1 includes a motor coil assembly and a motor housing, as well as a generator coil assembly and a generator housing. The motor coil assembly is pressed into the motor housing, and the generator coil assembly is pressed into the generator housing. Then, the generator housing and the motor housing are laser welded

[0021] The rotor assembly 2 includes a shaft, an aluminum alloy assembly and a shaft sleeve. The shaft is pressed into the aluminum alloy assembly, and then the shaft sleeve is fastened.

[0022] As Figure 2 Shown, damper assembly 3 includes flange 7 and magnetic steel 8, and the magnetic steel is adhered to the inner side of the flange with an adhesive. After heat treatment, the magnetic steel has the following magnetic properties:

[0023] Br≮7500 Gauss;

[0024] Hc≮600 Gauss;

[0025] [BH]max≮1.6×10 6 Gauss·Oersted.

[0026] As Figure 3 shown, the damper core 4 is in a sheet structure, and symmetrically provided with pin holes at both ends.

[0027] The damper core 4 is made of soft magnetic alloy.

[0028] When the servo speed measuring unit works, the rotor assembly 2 rotates at high speed, and the rotor assembly 2 is a conductor in the magnetic field of the stator assembly. When the conductor moves, it cuts the magnetic induction lines and generates an induced current. The induced current generates an Ampere force in the magnetic field provided by the damper assembly 3, which is opposite to the original movement direction of the conductor, thereby achieving the speed reduction and stable control of the conductor, i.e. the rotor assembly 2.

[0029] When the servo speed measuring unit works, the rotor assembly rotates at high speed, and the magnetic damper provides a reverse magnetic field for the rotor assembly, thereby achieving the speed reduction and stable control of the rotor assembly, so that the servo speed measuring unit can quickly stop rotating and work more efficiently at high speed.

Claims

1. A servo tachometer generator unit structure with magnetic damper, characterized by, It comprises a stator assembly (1), a rotor assembly (2), a damper assembly (3), a damper core (4), a pin (5) and a bearing (6); the stator assembly (1) is combined with the rotor assembly (2) by the bearing (6), the damper assembly (3) is combined with the stator assembly (1) by screws, and the damper core (4) is fixed with the rotor assembly (2) by the pin (5).

2. The servo tachometer generator set structure with magnetic dampers according to claim 1, characterized in that, The stator assembly (1) comprises a motor coil assembly and a motor shell and a generator coil assembly and a generator shell, the motor coil assembly is pressed into the motor shell, the generator coil assembly is pressed into the generator shell, and then the generator shell and the motor shell are laser welded.

3. The servo tachometer generator set structure with magnetic dampers according to claim 1, characterized in that, The rotor assembly (2) comprises a shaft, an aluminum casting assembly and a shaft sleeve, the shaft is pressed into the aluminum casting assembly, and then the shaft sleeve is fastened.

4. The servo tachometer generator set structure with magnetic dampers according to claim 1, characterized in that, The damper assembly (3) comprises a flange and a magnetic steel, the magnetic steel is adhered to the inner side of the flange by an adhesive; after heat treatment, the magnetic steel has the following magnetic properties: Br≮7500 Gauss; Hc≮600 Gauss; [BH]max≈ 1.6 x 10 6 Gauss Oersted.

5. The servo tachometer generator set structure with magnetic dampers according to claim 1, characterized in that, The damper core (4) has a sheet structure, and the two ends are symmetrically milled flat, and pin holes are arranged on the two sides of the milled flat ends.

6. The servo tachometer motor assembly with magnetic dampener according to claim 1, wherein The damper core (4) is made of soft magnetic alloy.

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