CN217544296U

CN217544296U - High-pressure sealed sine and cosine rotary transformer

Info

Publication number: CN217544296U
Application number: CN202123378069.2U
Authority: CN
Inventors: 李瑞成; 陈皓; 孟豪; 余轩
Original assignee: Avic Shaanxi Dongfang Aviation Instrument Co ltd
Current assignee: Avic Shaanxi Dongfang Aviation Instrument Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-10-04
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses a high-pressure sealed sine and cosine resolver, including casing subassembly, rotor subassembly and cage, the casing subassembly comprises shell, ring change coil winding and stator subassembly, stator subassembly is formed by the combination of front end stator stromatolite and rear end stator stromatolite, and front end stator stromatolite and rear end stator stromatolite all symmetrically set up on ring change coil winding both sides, front end stator stromatolite, ring change coil winding and rear end stator stromatolite all set up inside the stator bush; the isolation cover is arranged between the rotor assembly and the stator assembly, so that potential corrosive damage of an external hydraulic medium to the stator assembly and a non-metal component of a product is avoided, the aims of high-pressure sealing, stable output performance and reliable quality of the sine-cosine resolver in a hydraulic environment are fulfilled, the safety of the device is improved, and the service life of the device is prolonged.

Description

High-pressure sealed sine and cosine rotary transformer

Technical Field

The utility model relates to a rotary transformer technical field especially relates to a high-pressure seal's sine and cosine rotary transformer.

Background

The rotary transformer is widely applied to a servo system, a hydraulic driving system and a follow-up system as an axial angle sensor, and in order to improve the reliability and the accuracy of the hydraulic driving system of aviation and navigation weaponry during working, a sine-cosine rotary transformer is generally used.

In the practical use process, the sealing structure of the existing sine and cosine resolver is mostly set to adopt the sealing mode of an O-shaped sealing ring or an end face sealing gasket for a product butt joint interface and an electric signal output interface. The rotor with the electric coil driven by an output shaft or an input shaft works, hydraulic medium is stored in a product for a long time, the product is more complex along with the hydraulic medium, nonmetal components in the sensor with the structure are easy to be influenced by the hydraulic medium, potential hazards of unstable performance exist, the safety of the device is not strong, and therefore the high-pressure sealed sine-cosine rotary transformer is provided.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a high-pressure seal's sine and cosine resolver through the cage that sets up, has restrained the influence of hydraulic medium to the inside non-metallic spare part of product, has avoided along with the problem that hydraulic medium complicacy, product reliability reduce more, has improved the security of device.

In order to solve the technical problem, the utility model provides a following technical scheme: a kind of high-pressure hermetic sine and cosine rotary transformer, including body assembly and rotor assembly, characterized by that: the shell assembly comprises a shell, a stator assembly and a ring-changing coil winding, wherein the stator assembly is formed by combining a front-end stator lamination and a rear-end stator lamination, the front-end stator lamination and the rear-end stator lamination are symmetrically arranged on two sides of the ring-changing coil winding, the front-end stator lamination, the ring-changing coil winding and the rear-end stator lamination are arranged inside a stator bushing, the rotor assembly is formed by a rotor shaft, a first half rotor, a rotor lamination and a second half rotor, the rotor lamination and the second half rotor are sleeved with rotor lamination bushings, and the rotor lamination bushings are in pin joint with the rear end of the rotor shaft; an isolation cover is arranged between the rotor assembly and the stator assembly, the front end of the isolation cover is open, the rear end of the isolation cover is closed, and the wall of the circumferential cover is uniform; the rotor assembly is arranged inside the isolation cover; the front end of the isolation cover is welded and fixed with the shell; gaps are reserved between the inner hole of the stator component and the isolation cover as well as between the excircle of the rotor component and the isolation cover.

As a preferred technical scheme of the utility model, the wall thickness of the isolation cover is 0.2-0.25mm; the unilateral clearance between the inner hole of the stator component and the isolation cover is 0.08-0.1mm; the unilateral clearance between the excircle of the rotor assembly and the isolation cover is 0.1-0.12mm.

As a preferred technical scheme of the utility model, the rotor stromatolite sets up for the slope, the inclination of front end stator stromatolite and rear end stator stromatolite and rotor stromatolite mutually supports.

As an optimized technical scheme of the utility model, the inside non-metallic spare part that does not have of rotor subassembly.

As an optimized technical scheme of the utility model, the rotor subassembly is coaxial with the central axis.

As a preferred technical scheme of the utility model, the cage is weak magnetism thin wall casing, and inner wall thickness is even.

As an optimal technical scheme of the utility model, ring becomes coil winding rear end and is provided with the excitation lead wire, stator stromatolite rear end is provided with the output lead wire.

As a preferred technical scheme of the utility model, the wire hole has been seted up on the top of shell.

Compared with the prior art, the utility model discloses the beneficial effect that can reach is:

by arranging the isolation cover between the stator assembly and the rotor assembly, potential corrosive hazards of external hydraulic medium to the stator assembly and non-metal components of the product are avoided. The high-pressure sealing, stable output performance and reliable quality of the sine-cosine resolver in a hydraulic environment are achieved, the safety of the device is improved, and the service life of the device is prolonged.

Drawings

Fig. 1 is a schematic view of the three-dimensional structure of the present invention.

Fig. 2 is a front sectional view of the present invention.

Fig. 3 is a schematic view of the front view cross-sectional structure of the stator assembly of the present invention.

Fig. 4 is a schematic view of a front sectional structure of the housing assembly of the present invention.

Fig. 5 is a schematic view of a front cross-sectional structure of the rotor assembly of the present invention.

Fig. 6 is a schematic view of the front cross-sectional structure of the isolation cover of the present invention.

Wherein: 1. a housing assembly; 2. a rotor assembly; 3. an isolation cover; 4. a housing; 5. a stator assembly; 6. a front end stator lamination; 7. a toroidal coil winding; 8. a back-end stator lamination; 9. a stator liner; 10. a rotor shaft; 11. a first half rotor; 12. laminating the rotor; 13. a second half rotor; 14. a rotor lamination liner; 15. a wire outlet hole; 16. an output lead; 17. and exciting the lead.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further described with reference to the following embodiments.

Example (b):

referring to fig. 1-6, a high-pressure sealed sine-cosine resolver includes a housing assembly 1, a rotor assembly 2 and a shielding case 3, where the housing assembly 1 is composed of a casing 4, a stator assembly 5 and a toroidal coil winding 7. The stator assembly 5 is formed by combining a front-end stator lamination 6 and a rear-end stator lamination 8, and the front-end stator lamination 6 and the rear-end stator lamination 8 are symmetrically arranged on both sides of the toroidal coil winding 7. The front end stator stack 6, the toroidal coil winding 7 and the back end stator stack 8 are all arranged inside a stator liner 9. The rotor assembly 2 consists of a rotor shaft 10, a first rotor half 11, a rotor stack 12 and a second rotor half 13. The rotor lamination 12 and the second half rotor 13 are sleeved with a rotor lamination bushing 14, and the rotor lamination bushing 14 is pinned with the rear end of the rotor shaft 10. A cage 3 is provided between the rotor assembly 2 and the stator assembly 5. The front end of the isolation cover 3 is open, and the rear end is closed. The isolation cover 3 is a weak magnetic thin-wall shell, and the circumferential cover wall is uniform.

As shown in fig. 5, the isolation cover 3 integrally wraps the rotor assembly 2 in the cover, and the front end of the isolation cover 3 is welded with the shell 4. The shell 4 is designed with a shield stop step to ensure the bearing strength of the front end of the shield 3. The rotor assembly 2 is placed inside the cage 3. The front end of the isolation cover 3 is welded and fixed with the shell 4. Gaps are reserved between the inner hole of the stator assembly 5 and the isolation cover 3 and between the outer circle of the rotor assembly 2 and the isolation cover 3. The unilateral gap between the inner hole of the stator assembly 5 and the isolation cover 3 is 0.08-0.1mm. The unilateral clearance between the excircle of the rotor component 2 and the isolation cover 3 is 0.1-0.12mm. The wall thickness of the isolation cover 3 is 0.2-0.25mm, and the pressure of the rotor lamination bushing is 14 MPa. The rotor assembly 2 and the stator assembly 5 are separated by the isolation cover 3, so that the stator assembly 5 and internal non-metal components thereof are protected from potential damage and influence caused by corrosion interference of external hydraulic media. When the rotor assembly 2 is made of a pure metal material, the shield 3 has complete corrosion protection and high-pressure sealing performance. When the rotor assembly 2 is made of a non-metallic material, although the rotor assembly 2 may be corroded, the cage 3 can play a role of complete high-pressure sealing for the stator assembly 5, and the service life is still prolonged compared with the case that both the rotor assembly 2 and the stator assembly 5 are corroded.

As shown in fig. 3, the housing assembly 1 is composed of a casing 4, a stator assembly 5, and a toroidal coil winding 7. The stator assembly 5 is comprised of a front end stator stack 6 and a back end stator stack 8. The front-end stator lamination 6 and the rear-end stator lamination 8 are formed by pressing a certain number of stator laminations, and two groups of sine windings and cosine windings which are perpendicular to each other are embedded in lamination slots and used as signal output coils of the rotary transformer. The ring-change coil winding 7 is used as an input coil for connecting excitation, and an excitation lead 17 arranged on the ring-change coil winding 7 is led out through a coil inserting groove arranged on the rear-end stator lamination 8. The toroidal coil winding 7 and the sine and cosine output windings on the stator assembly 5 form a toroidal transformer, the front-end stator lamination 6, the toroidal coil winding 7 and the rear-end stator lamination 8 are sequentially pressed into a stator lining 9 with good magnetic conductivity after being coated with glue, and the stator assembly 5 is pressed into the shell 4 after being coated with the glue to form the shell assembly 1.

As shown in fig. 4, the rotor assembly 2 is composed of a rotor shaft 10, a first half rotor 11, a rotor lamination 12 and a second half rotor 13, the non-magnetic first half rotor 11, the rotor lamination 12 and the second half rotor 13 are glued and pressed into a rotor lamination bushing 14, and are pinned with the rear end of the rotor shaft 10 through the rotor lamination bushing 14 to ensure that the rotor lamination 12 cooperates with the alternating magnetic field of the stator assembly 5, and the excitation voltage input from the outside of the resolver is transmitted to the output winding on the stator assembly 5 through electromagnetic coupling.

In other embodiments, the rotor lamination 12 is inclined, and the inclination angles of the front stator lamination 6 and the rear stator lamination 8 and the rotor lamination 12 are matched with each other.

Through the design, the inclined rotor lamination 12 can be matched with the front end stator lamination 6 and the rear end stator lamination 8 in a coordinated mode to form a magnetic circuit, the annular transformer coil winding 7 and the stator assembly 5 form an annular transformer, and the auxiliary annular transformer coil winding 7 is in electromagnetic coupling.

In other embodiments, the rotor assembly 2 is devoid of non-metallic components therein.

Through the design, potential harm of corrosion interference of the hydraulic medium on the rotor assembly is avoided, and the corrosion interference resistance of the hydraulic medium is improved.

In other embodiments, the rotor assembly 2 is coaxial with the central axis.

Through this design, avoid rotor subassembly 2 in the rotation process with the cage 3 the problem of wearing and tearing emergence.

In other embodiments, the back end of the toroidal coil winding 7 is provided with an excitation lead 17 and the back end of the back stator lamination 8 is provided with an output lead 16.

In other embodiments, the top of the housing 4 is provided with an outlet 15.

Claims

1. A high-pressure sealed sine-cosine resolver comprises a shell assembly (1) and a rotor assembly (2), and is characterized in that: the shell assembly (1) comprises a shell (4), a stator assembly (5) and a ring-changing coil winding (7), wherein the stator assembly (5) is formed by combining a front-end stator lamination (6) and a rear-end stator lamination (8), the front-end stator lamination (6) and the rear-end stator lamination (8) are symmetrically arranged on two sides of the ring-changing coil winding (7), the front-end stator lamination (6), the ring-changing coil winding (7) and the rear-end stator lamination (8) are arranged inside a stator bushing (9), the rotor assembly (2) is formed by a rotor shaft (10), a first semi-rotor (11), a rotor lamination (12) and a second semi-rotor (13), the surfaces of the rotor lamination (12) and the second semi-rotor (13) are sleeved with a rotor lamination bushing (14), and the rotor lamination bushing (14) is in pin joint with the rear end of the rotor shaft (10); a separation cover (3) is arranged between the rotor assembly (2) and the stator assembly (5), the front end of the separation cover (3) is open, the rear end of the separation cover is closed, and the wall of the circumferential cover is uniform; the rotor assembly (2) is arranged inside the isolation cover (3); the front end of the isolation cover (3) is welded and fixed with the shell (4); gaps are reserved between the inner hole of the stator assembly (5) and the isolation cover (3) and between the outer circle of the rotor assembly (2) and the isolation cover (3).

2. A high pressure sealed sin-cos resolver according to claim 1, wherein: the wall thickness of the isolation cover (3) is 0.2-0.25mm; the unilateral clearance between the inner hole of the stator component (5) and the isolation cover (3) is 0.08-0.1mm; the unilateral clearance between the excircle of the rotor component (2) and the isolation cover (3) is 0.1-0.12mm.

3. A high-pressure sealed sine and cosine resolver as claimed in claim 1, wherein: the rotor lamination (12) is arranged in an inclined mode, and the inclined angles of the front-end stator lamination (6), the rear-end stator lamination (8) and the rotor lamination (12) are matched with each other.

4. A high-pressure sealed sine and cosine resolver as claimed in claim 1, wherein: the rotor component (2) is free of non-metal components.

5. A high pressure sealed sin-cos resolver according to claim 1, wherein: the rotor assembly (2) is coaxial with the central axis.

6. A high pressure sealed sin-cos resolver according to claim 1, wherein: the isolation cover (3) is a weak-magnetism thin-wall shell, and the thickness of the inner wall of the shell is uniform.

7. A high pressure sealed sin-cos resolver according to claim 1, wherein: an excitation lead (17) is arranged at the rear end of the annular transformer coil winding (7), and an output lead (16) is arranged at the rear end of the stator lamination (8).

8. A high pressure sealed sin-cos resolver according to claim 1, wherein: the top end of the shell (4) is provided with a wire outlet hole (15).