Double-layer semi-sealed electric transmission driving mechanism

Abstract

The invention discloses a double-layer semi-sealed electric transmission driving mechanism, which comprises a driving system, an electric transmission system and a semi-sealed system, and is characterized in that the driving system comprises a motor, a speed reducer, a driving shaft, a bearing assembly, a front end cover and a butt flange; the electric transmission system comprises an electric connector, a wire and a conductive slip ring; the semi-sealing system comprises a shell, a rear end cover, a motor end cover, a sealing cover, a sealing electric connector, a sealing flange, a first sealing ring assembly and a second sealing ring assembly. The shell, the rear end cover, the motor end cover and the first sealing ring assembly achieve a first-layer semi-sealing structure. The sealing cover, the sealing electric connector, the sealing flange and the second sealing ring assembly form a second-layer semi-sealing structure, a double-layer semi-sealing structure is formed, and cabin sealing is achieved. The double-layer semi-sealed electric transmission driving mechanism is simple in structure, sealing of the driving mechanism is achieved, meanwhile, through the double-layer sealing design, the leakage rate of gas in a cabin is reduced, and sealing reliability is ensured.

Description

Technical Field

[0001] The invention relates to a space power transmission drive mechanism, in particular to a double-layer semi-sealed power transmission drive mechanism. Background Art

[0002] The spacecraft cabin is in a vacuum environment, but the cabin needs to maintain atmospheric pressure. At present, the electric transmission drive mechanisms used in space payloads are all non-sealed designs. Non-sealed electric transmission drive mechanisms cannot ensure the cabin is sealed, which will make it impossible for astronauts to survive inside the spacecraft, affecting the safety of astronauts' activities. Summary of the invention

[0003] In order to solve the above problems, the present invention discloses a double-layer semi-sealed electric transmission drive mechanism, which can not only solve the problem of sealing the entire aircraft, but also realize the needs of driving the solar wing to rotate and transmit electric energy.

[0004] The specific technical solutions of the present invention are as follows:

[0005] A double-layer semi-sealed electric transmission drive mechanism, the drive mechanism comprising: a drive system, an electric transmission system, and a semi-sealed system, wherein:

[0006] The drive system includes a motor, a reducer, a drive shaft, a bearing assembly, a front end cover, and a docking flange, wherein the motor is connected to the reducer, and the drive torque generated by the motor is decelerated by the reducer to achieve torque amplification; the drive shaft is connected to the docking flange, and the docking flange is connected to various loads to transmit the drive torque to the load to achieve rotational motion of the load;

[0007] The electric transmission system includes an electric connector, a conductor, and a conductive slip ring, which are used to realize the transmission of electric power and signals;

[0008] The semi-sealed system includes a shell, a rear end cover, a motor end cover, a sealing cover, a sealed electrical connector, a sealing flange, a first sealing ring assembly, and a second sealing ring assembly, wherein the shell, the rear end cover, the motor end cover, and the first sealing ring assembly realize a first-layer semi-sealed structure; the sealing cover, the sealed electrical connector, the sealing flange, and the second sealing ring assembly realize a second-layer semi-sealed structure, and the first-layer sealing structure and the second-layer semi-sealed structure form a double-layer semi-sealed structure for realizing cabin sealing.

[0009] Preferably, the first sealing ring assembly includes sealing ring 1, sealing ring 2, and sealing ring 3, wherein:

[0010] The sealing ring 1 is installed between the housing and the rear end cover;

[0011] The second sealing ring is installed between the rear end cover and the motor end cover;

[0012] The sealing ring three is installed between the motor end cover and the motor.

[0013] Preferably, the second sealing ring assembly includes sealing ring four, sealing ring five, and sealing ring six, wherein:

[0014] The sealing ring 4 is installed between the housing and the sealing cover;

[0015] The sealing ring 5 is installed between the sealing cover and the sealed electrical connector;

[0016] The sealing ring 6 is installed between the sealing cover and the sealing flange.

[0017] Preferably, the motor is a semi-sealed motor, which is mounted on the motor end cover.

[0018] Preferably, the electrical connector comprises a non-sealed electrical connector and a sealed electrical connector, wherein: the non-sealed electrical connector is mounted on the docking flange; and the sealed electrical connector is mounted on the sealing cover.

[0019] Preferably, one end of the rotating end of the conductive slip ring is connected to the output end of the reducer, and the other end is connected to the driving shaft; the fixed end of the conductive slip ring is fixedly connected to the housing.

[0020] Preferably, the rear end cover is installed at the rear end of the shell, and the motor end cover and the reducer are installed on the rear end cover.

[0021] Preferably, the sealing flange is mounted on the sealing cover.

[0022] Preferably, the inner ring of the bearing assembly is connected to the drive shaft, and the outer ring is connected to the front end cover.

[0023] Preferably, the front end cover is installed at the front end of the shell.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] (1) The double-layer semi-sealed electric transmission drive mechanism of the present invention has a simple structure. The sealing ring is installed between the shell and the rear end cover, between the rear end cover and the motor end cover, between the motor end cover and the motor, between the shell and the sealing cover, between the sealing cover and the sealed electric connector, and between the sealing cover and the sealing flange, thereby achieving the sealing of the drive mechanism.

[0026] (2) The double-layer semi-sealed electric transmission drive mechanism of the present invention reduces the leakage rate of gas in the cabin through a double-layer sealing design, provides an atmospheric pressure environment for astronauts to move in the cabin, and ensures the reliability of the seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions disclosed in the present invention, the following briefly introduces the drawings required to be used in some embodiments disclosed in the present invention. Obviously, the drawings described below are only drawings of some embodiments disclosed in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not limitations on the actual size of the products involved in the embodiments disclosed in the present invention, the actual process of the method, etc.

[0028] Figure 1 It is a structural schematic diagram of a double-layer semi-sealed electric transmission drive mechanism provided by the present invention.

[0029] The accompanying drawings are marked as follows: 1. docking flange; 2. non-sealed electrical connector; 3. front end cover; 4. bearing assembly; 5. drive shaft; 6. conductive slip ring; 7. housing; 8. reducer; 9. rear end cover; 10. sealing ring one; 11. sealing ring four; 12. sealing ring two; 13. motor end cover; 14. sealing ring three; 15. motor; 16. sealing cover; 17. sealing ring five; 18. sealing ring six; 19. sealing flange; 20. sealed electrical connector.

[0030] Figure 2 The figure is an appearance diagram of a double-layer semi-sealed electric transmission drive mechanism provided by the present invention. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] like Figure 1 As shown, the present invention provides a double-layer semi-sealed electric transmission drive mechanism, comprising: a drive system, an electric transmission system, and a semi-sealed system, wherein:

[0033] The drive system includes a motor 15, a reducer 8, a drive shaft 5, a bearing assembly 4, a front end cover 3, and a docking flange 1, wherein the motor 15 is connected to the reducer 8, and the drive torque generated by the motor 15 is decelerated by the reducer 8 to achieve torque amplification; the drive shaft 5 is connected to the docking flange 1, and the docking flange 1 is connected to various loads to transmit the drive torque to the load to achieve the rotational motion of the load;

[0034] The electrical transmission system includes an electrical connector, a conductor, and a conductive slip ring 6, which are used to realize the transmission of electrical power and signals;

[0035] The semi-sealed system includes a shell 7, a rear end cover 9, a motor end cover 13, a sealing cover 16, a sealed electrical connector 20, a sealing flange 19, a first sealing ring assembly, and a second sealing ring assembly, wherein the shell 7, the rear end cover 9, the motor end cover 13, and the first sealing ring assembly realize a first-layer semi-sealed structure; the sealing cover 16, the sealed electrical connector 20, the sealing flange 19, and the second sealing ring assembly realize a second-layer semi-sealed structure, and the first-layer sealing structure and the second-layer semi-sealed structure form a double-layer semi-sealed structure for realizing cabin sealing.

[0036] The first sealing ring assembly includes a sealing ring 10, a sealing ring 2 12, and a sealing ring 3 14, wherein: the sealing ring 10 is installed between the housing 7 and the rear end cover 9; the sealing ring 2 12 is installed between the rear end cover 9 and the motor end cover 13; the sealing ring 3 14 is installed between the motor end cover 13 and the motor 15.

[0037] The second sealing ring assembly includes a sealing ring 4 11, a sealing ring 5 17, and a sealing ring 6 18, wherein:

[0038] The sealing ring 9 11 is installed between the housing 7 and the sealing cover 16;

[0039] The sealing ring 5 17 is installed between the sealing cover 16 and the sealed electrical connector 20;

[0040] The sealing ring 6 18 is installed between the sealing cover 16 and the sealing flange 19.

[0041] The motor 15 is a semi-sealed motor and is installed on the motor end cover 13 .

[0042] The electrical connector comprises a non-sealed electrical connector 2 and a sealed electrical connector 20, wherein:

[0043] The non-sealed electrical connector 2 is mounted on the docking flange 1;

[0044] The sealed electrical connector 20 is mounted on the sealing cover 16 .

[0045] One end of the rotating end of the conductive slip ring 6 is connected to the output end of the reducer 8 , and the other end is connected to the driving shaft 5 ; the fixed end of the conductive slip ring 6 is fixedly connected to the housing 7 .

[0046] The rear end cover 9 is installed at the rear end of the housing 7 , and the motor end cover 13 and the reducer 8 are installed on the rear end cover 9 .

[0047] The sealing flange 19 is installed on the sealing cover 16 .

[0048] The inner ring of the bearing assembly 4 is connected to the drive shaft 5 , and the outer ring is connected to the front end cover 3 .

[0049] The front end cover 3 is installed at the front end of the housing 7 .

[0050] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention using the above disclosed contents without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the contents of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A double-layer semi-sealed electric transmission drive mechanism, characterized in that: The driving mechanism comprises: a driving system, an electric transmission system, and a semi-sealed system, wherein: The drive system comprises a motor (15), a reducer (8), a drive shaft (5), a bearing assembly (4), a front end cover (3), and a docking flange (1); the motor (15) is connected to the reducer (8), and the drive torque generated by the motor (15) is decelerated by the reducer (8) to achieve torque amplification; the drive shaft (5) is connected to the docking flange (1), and the docking flange (1) is connected to various loads to transmit the drive torque to the load to achieve rotational motion of the load; The electric transmission system comprises an electric connector, a conductor, and a conductive slip ring (6), and is used to realize the transmission of electric power and signals; The semi-sealed system comprises a shell (7), a rear end cover (9), a motor end cover (13), a sealing cover (16), a sealed electric connector (20), a sealing flange (19), a first sealing ring assembly, and a second sealing ring assembly, wherein the shell (7), the rear end cover (9), the motor end cover (13), and the first sealing ring assembly realize a first-layer semi-sealed structure; the sealing cover (16), the sealed electric connector (20), the sealing flange (19), and the second sealing ring assembly realize a second-layer semi-sealed structure, and the first-layer sealing structure and the second-layer semi-sealed structure form a double-layer semi-sealed structure for realizing cabin sealing.

2. A double-layer semi-sealed electric transmission drive mechanism according to claim 1, characterized in that: The first sealing ring assembly comprises a sealing ring 1 (10), a sealing ring 2 (12), and a sealing ring 3 (14), wherein: The sealing ring 1 (10) is installed between the housing (7) and the rear end cover (9); The second sealing ring (12) is installed between the rear end cover (9) and the motor end cover (13); The sealing ring three (14) is installed between the motor end cover (13) and the motor (15).

3. A double-layer semi-sealed electric transmission drive mechanism according to claim 1, characterized in that: The second sealing ring assembly comprises a sealing ring four (11), a sealing ring five (17), and a sealing ring six (18), wherein: The sealing ring 4 (11) is installed between the housing (7) and the sealing cover (16); The sealing ring 5 (17) is installed between the sealing cover (16) and the sealed electrical connector (20); The sealing ring six (18) is installed between the sealing cover (16) and the sealing flange (19).

4. A double-layer semi-sealed electric transmission drive mechanism according to claim 1, characterized in that: The motor (15) is a semi-sealed motor and is mounted on the motor end cover (13).

5. A double-layer semi-sealed electric transmission drive mechanism according to claim 1, characterized in that: The electrical connector comprises a non-sealed electrical connector (2) and a sealed electrical connector (20), wherein: The non-sealed electrical connector (2) is mounted on the docking flange (1); The sealed electrical connector (20) is mounted on the sealed cover (16).

6. A double-layer semi-sealed electric transmission drive mechanism according to claim 1, characterized in that: One end of the rotating end of the conductive slip ring (6) is connected to the output end of the reducer (8), and the other end is connected to the drive shaft (5); the fixed end of the conductive slip ring (6) is fixedly connected to the housing (7).

7. A double-layer semi-sealed electric transmission drive mechanism according to claim 1, characterized in that: The rear end cover (9) is installed at the rear end of the housing (7), and the motor end cover (13) and the reducer (8) are installed on the rear end cover (9).

8. A double-layer semi-sealed electric transmission drive mechanism according to claim 1, characterized in that: The sealing flange (19) is mounted on the sealing cover (16).

9. A double-layer semi-sealed electric transmission drive mechanism according to claim 1, characterized in that: The inner ring of the bearing assembly (4) is connected to the drive shaft (5), and the outer ring is connected to the front end cover (3).

10. The double-layer semi-sealed electric transmission drive mechanism according to claim 1, characterized in that: The front end cover (3) is mounted on the front end of the housing (7).

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