Fuel throttle valve motor assembly

Abstract

The utility model provides a fuel throttle valve motor assembly. The fuel throttle valve motor assembly comprises a motor body. A motor shell of the motor body is connected with a rear shell, one end of the rear shell is connected with a rear cover, and a motor shaft and an output shaft are arranged in the rear shell; one end of the motor shaft is connected with a motor rotary transformer and a brake, and one end of the output shaft is connected with a harmonic reducer, a unit rotary transformer and a non-contact trigger assembly. A second locking nut is arranged between the motor rotary transformer and the motor shaft, the rear end of the second locking nut is connected with the brake, and a third locking nut is arranged at the tail end of the brake. The motor shaft is connected with the output shaft through spur gear transmission, and the spur gear transmission comprises a first spur gear, a second spur gear and a third spur gear. The permanent magnet synchronous motor adopts the spur gear and the harmonic reducer for speed reduction and distance increase, the reduction ratio is large, and the transmission precision is high; the motor shaft is provided with a brake which can brake the motor assembly; the rotation angles of the motor shaft and the output shaft can be detected in real time, intermediate conversion links are reduced, the measurement precision of the rotation angles is greatly improved, and the accurate rotation angle precision can improve the control precision of a motor assembly.

Description

Technical Field

[0001] The utility model relates to a fuel throttle valve motor component, in particular to a fuel throttle valve motor component with zero axial clearance and anti-vibration and impact, belonging to the technical field of aerospace. Background Art

[0002] The fuel throttle valve motor assembly is required to have strong resistance to vibration and shock, and high output torque and measurement control accuracy. The current motor assembly has a high speed, and the axial clearance cannot be completely eliminated by adjusting the gasket, and the adjustment is difficult, resulting in large vibration noise during operation. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a fuel throttle valve motor assembly.

[0004] The utility model is realized through the following technical solutions.

[0005] The utility model provides a fuel throttle valve motor assembly, comprising a motor body; the motor housing of the motor body is connected to a rear housing, one end of the rear housing is connected to a rear cover, and a motor shaft and an output shaft are arranged in the rear housing; one end of the motor shaft is connected to a motor resolver and a brake, and one end of the output shaft is connected to a harmonic reducer, a unit resolver and a non-contact trigger assembly; a locking nut 2 is arranged between the motor resolver and the motor shaft, the rear end of the locking nut 2 is connected to the brake, and a locking nut 3 is arranged at the end of the brake; the motor shaft is connected to the output shaft through a spur gear transmission, and the spur gear transmission comprises a spur gear 1, a spur gear 2 and a spur gear 3.

[0006] The motor shaft is provided with three threads.

[0007] The motor shaft is connected to the rear housing via a locking nut.

[0008] The motor shaft is connected to the spur gear one through a flat key, and the spur gear three is connected to the output shaft through a flat key.

[0009] The spur gear 1 is connected to the rear housing through a locking nut 1, a bearing 1 and a stop washer.

[0010] The rear end of the locking nut 1 is connected to the rear cover through the bearing 2, and the rear end of the bearing 2 is connected to the motor resolver.

[0011] The spur gear one is provided with a weight-reducing hole, the spur gear three is provided with an inner hole, and one end of the spur gear three is provided with a plurality of bosses.

[0012] The inner hole and both ends of the spur gear 3 are provided with bearing holes, and the boss is connected to the harmonic reducer.

[0013] The spur gear one is meshed with the spur gear two, and the spur gear two is meshed with the spur gear three.

[0014] The unit resolver and the motor resolver are both rotary transformers.

[0015] The beneficial effects of the utility model are as follows: a spur gear plus a harmonic reducer is used to reduce speed and increase distance for a permanent magnet synchronous motor, the reduction ratio is large, and the transmission accuracy is high; the motor shaft is provided with a brake, which can brake the motor assembly; the rotation angle of the motor shaft and the output shaft can be detected in real time, the intermediate conversion links are reduced, and the measurement accuracy of the rotation angle is greatly improved; the precise rotation angle accuracy can improve the control accuracy of the motor assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the utility model;

[0018] Figure 3 yes Figure 1 The structural diagram of the spur gear 1;

[0019] Figure 4 yes Figure 1 The structural diagram of the middle spur gear three;

[0020] Figure 5 It is a structural schematic diagram of the non-contact trigger assembly of the utility model;

[0021] In the figure: 1-rear cover, 2-unit resolver, 3-brake, 4-locking nut three, 5-locking nut two, 6-motor resolver, 7-bearing two, 8-locking nut one, 9-spur gear one, 10-bearing one, 11-rear housing, 12-motor housing, 13-motor shaft, 14-spur gear two, 15-harmonic reducer housing, 16-harmonic reducer, 17-output shaft, 18-spur gear three, 19-non-contact trigger assembly. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0023] like Figure 1 and 2As shown, it mainly includes a motor resolver 6, a brake 3, a motor body, a spur gear transmission, a harmonic reducer 16, a unit resolver 2, etc. The motor housing 12 in the motor body is connected to the rear housing 11. The motor shaft 13 is characterized in that it is processed with three threads and is installed in the rear housing 11 through a bearing 2 7. The motor shaft 13 is connected to a spur gear 1 9 through a flat key. The spur gear 1 9, the bearing 10, the stop washer and the rear housing 11 are locked by a locking nut 1 8 to eliminate the axial clearance of the motor shaft 13. Since the motor shaft 13 has a high rotation speed, the vibration noise of the motor assembly is reduced by eliminating the axial clearance.

[0024] Furthermore, the rear end of the locking nut 1 8 is connected to the bearing 2 7, which is rotatably fitted on the rear cover 1. The rear end of the bearing 2 7 is then connected to the motor resolver 6. The motor resolver 6 and the motor shaft 13 are still eliminated through the locking nut 2 5 to eliminate the axial clearance.

[0025] Furthermore, a brake 3 is installed at the rear end of the locking nut 2 5 , and the end of the brake 3 is still axially eliminated through the locking nut 3 4 .

[0026] like Figure 3 As shown, a weight-reducing hole is processed inside the spur gear 1 9 to accommodate the locking nut 1 8 while reducing the weight; the spur gear 1 9 is meshed with the spur gear 2 14 , and the spur gear 2 14 is meshed with the spur gear 3 18 .

[0027] like Figure 4 As shown, the characteristic of the spur gear three 18 is that bearing holes are processed at both ends and the inner hole, and the spur gear three 18 is rotatably matched with the rear cover 1, the rear housing 11 and the output shaft 17 through the bearing two 7. One end of the spur gear three 18 has four rectangular bosses, which are connected to the harmonic reducer 16, and the harmonic reducer 16 is fixedly connected to the output shaft 17.

[0028] Furthermore, an organic resolver 2 is installed at one end of the output shaft 17 to detect the rotation angle of the output shaft 17 , and the axial clearance thereof is adjusted in the same manner as the motor shaft 13 .

[0029] like Figure 5 As shown, the output shaft 17 is provided with a non-contact trigger assembly 19, which can send out a trigger signal within any angle range by pre-installation adjustment and setting, and can power off and lock the motor assembly at any specified angle by cooperating with the brake 3.

[0030] The working process of the utility model is as follows: the motor shaft 13 drives the spur gear 1 9 to rotate, the spur gear 1 9 drives the spur gear 2 14 to rotate, the spur gear 2 14 drives the spur gear 3 18 to rotate, and the spur gear 3 18 then transmits the power to the harmonic reducer 16, the harmonic reducer 16 decelerates the power again and increases the torque before driving the output shaft 17 to rotate, the motor resolver 6 and the unit resolver 2 respectively detect the rotation angles of the motor shaft 13 and the output shaft 17 in real time, and the end of the motor shaft 13 is provided with a brake 3, which can brake the motor assembly in real time.

[0031] Preferably, both the motor shaft 13 and the output shaft 17 are equipped with a rotary transformer, which can detect the rotation angle of the motor shaft 13 and the output shaft 17 in real time, reducing the intermediate conversion links and greatly improving the measurement accuracy of the rotation angle. The precise rotation angle accuracy can improve the control accuracy of the motor assembly.

[0032] Preferably, the motor shaft 13 and the output shaft 17 are both processed with multiple threads, and the mounting structure is locked with a locking nut, thereby eliminating the axial clearance between the motor shaft 13 and the output shaft 17 and reducing the vibration noise of the motor assembly.

[0033] Preferably, the middle part of the rear cover 1 is provided with reinforcing ribs, and the rear housing 11, the motor housing 13 and the harmonic reducer housing 15 are fixed and supported by screws, which has the advantages of compact structure, good rigidity and resistance to vibration and impact.

Claims

1. A fuel throttle valve motor assembly, comprising a motor body, characterized in that: The motor housing (12) of the motor body is connected to the rear housing (11), one end of the rear housing (11) is connected to the rear cover (1), and a motor shaft (13) and an output shaft (17) are arranged in the rear housing (11); one end of the motor shaft (13) is connected to the motor resolver (6) and the brake (3), and one end of the output shaft (17) is connected to the harmonic reducer (16), the unit resolver (2) and the non-contact trigger component (19); a locking nut 2 (5) is arranged between the motor resolver (6) and the motor shaft (13), the rear end of the locking nut 2 (5) is connected to the brake (3), and the end of the brake (3) is provided with a locking nut 3 (4); the motor shaft (13) is connected to the output shaft (17) through a spur gear transmission, and the spur gear transmission comprises a spur gear 1 (9), a spur gear 2 (14) and a spur gear 3 (18).

2. The fuel throttle valve motor assembly according to claim 1, characterized in that: The motor shaft (13) is provided with three threads.

3. The fuel throttle valve motor assembly according to claim 1, characterized in that: The motor shaft (13) is connected to the rear housing (11) via a locking nut (8).

4. The fuel throttle valve motor assembly according to claim 1, characterized in that: The motor shaft (13) is connected to the spur gear one (9) via a flat key, and the spur gear three (18) is connected to the output shaft (17) via a flat key.

5. The fuel throttle valve motor assembly according to claim 4, characterized in that: The spur gear one (9) is connected to the rear housing (11) via a locking nut one (8), a bearing one (10) and a stop washer.

6. The fuel throttle valve motor assembly according to claim 5, characterized in that: The rear end of the locking nut 1 (8) is connected to the rear cover (1) through the bearing 2 (7), and the rear end of the bearing 2 (7) is connected to the motor resolver (6).

7. The fuel throttle valve motor assembly according to claim 1, characterized in that: The spur gear one (9) is provided with a weight-reducing hole, the spur gear three (18) is provided with an inner hole, and one end of the spur gear three (18) is provided with a plurality of bosses.

8. The fuel throttle valve motor assembly according to claim 7, characterized in that: The inner hole and both ends of the spur gear three (18) are provided with bearing holes, and the boss is connected to the harmonic reducer (16).

9. The fuel throttle valve motor assembly according to claim 1, characterized in that: The spur gear one (9) is meshed with the spur gear two (14), and the spur gear two (14) is meshed with the spur gear three (18).

10. The fuel throttle valve motor assembly according to claim 1, characterized in that: The unit resolver (2) and the motor resolver (6) are both rotary transformers.

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