A detachable fixing device for a magnetic reluctance resolver

Abstract

The utility model discloses a kind of magnetoresistive rotary transformer detachable fixing device, including the fixed pedestal (1) being installed on motor, the rotary transformer (2) is embedded in fixed pedestal (1) inside, fixed pedestal (1) is equipped with the compression member of fixed rotary transformer (2) on, the compression member is the pressing plate (3) on the rotary transformer (2), the outer circle of the rotary transformer (2) is equipped with stator (4);Stator (4) can be fixed in fixed pedestal (1) using pressing plate (3), by adopting pressing plate (3) rotary transformer (2) is fixed in fixed pedestal (1) inside, fixed pedestal (1) is fixed on motor, operator can conveniently install rotary transformer (2) to motor main body, when needing maintenance or replacing rotary transformer (2), it can also be quickly disassembled, greatly improve work efficiency, reduce maintenance difficulty.

Description

Technical Field

[0001] This utility model belongs to the field of rotary transformer technology. Specifically, this utility model relates to a detachable fixing device for a reluctance rotary transformer. Background Technology

[0002] In motor systems, resolvers serve as important position and speed detection elements. The stability and removability of their installation have a critical impact on motor performance and maintenance. 2. With the continuous development of motor technology, higher requirements are being placed on the miniaturization, high performance, and maintainability of motors.

[0003] A patent application (patent number 201020510538.4, published on March 30, 2011) discloses a fixing device for a rotary transformer stator. The fixing device includes a fixing bracket and a pressure plate, with a space formed between the fixing bracket and the pressure plate for mounting the rotary transformer stator. Both the fixing bracket and the pressure plate have through holes to facilitate the mating of the rotary transformer stator and rotor. The fixing bracket and the pressure plate are fixedly connected. An extension is provided around the periphery of the fixing bracket, and the extension has mounting holes for mounting the fixing device. This rotary transformer stator fixing device places the rotary transformer stator in the mounting space formed by the fixing bracket and the pressure plate, and installs the rotary transformer stator to the desired position through the mounting holes on the fixing bracket. It eliminates the need for a motor end cover, thus making use and maintenance more convenient.

[0004] Currently, traditional motor resolver fixing methods have many shortcomings: ① The fixing method uses permanent connections, such as welding or strong adhesive, which makes disassembly extremely difficult when the resolver needs to be repaired, replaced, or the motor upgraded. This can even lead to damage to the resolver or other motor components, increasing maintenance and time costs; ② Although the fixing method uses detachable methods such as bolt connections, in actual operation, due to the space limitations of the resolver installation location and the unreasonable design of the fixing structure, the disassembly process is cumbersome, tools are difficult to use, and the resolver and motor are easily damaged by bumps during the disassembly process. Utility Model Content

[0005] The present invention aims to provide a detachable fixing device for a reluctance rotary transformer that is easy to install and disassemble.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a detachable fixing device for a reluctance rotary transformer, including a fixing base installed on a motor, the rotary transformer being embedded in the fixing base, and a clamping member for fixing the rotary transformer being provided on the fixing base, the clamping member being a pressure plate covering the rotary transformer.

[0007] The pressure plate is fan-shaped, and the rotary transformer is located at the center of the pressure plate.

[0008] The outer circumference of the rotary transformer is provided with a stator, the diameter of which is larger than the inner diameter of the pressure plate, and the diameter of the rotary transformer is smaller than the inner diameter of the pressure plate.

[0009] A positioning pin is provided between the stator and the fixed base, and a semi-circular groove is provided on the outer edge of the stator and the inner edge of the fixed base to cooperate with the positioning pin.

[0010] The bottom of the inner side of the fixed base is provided with a receiving ring located below the stator.

[0011] The fixed base is provided with a screw hole seat, and the screw hole seat is provided with a screw that cooperates with the screw hole seat and passes through the pressure plate.

[0012] The pressure plate is uniformly provided with arc-shaped mounting grooves, the screws pass through the mounting grooves, and the head diameter of the screws is greater than the width of the mounting grooves.

[0013] A spring washer is provided between the screw and the pressure plate.

[0014] The fixed base is provided with multiple arc-shaped grooves evenly distributed on it.

[0015] The technical advantages of this utility model are as follows: by using a pressure plate to fix the rotary transformer inside the fixed base, and the fixed base is fixed on the motor, the operator can easily install the rotary transformer onto the motor body. When it is necessary to repair or replace the rotary transformer, it can also be quickly disassembled, which greatly improves work efficiency and reduces maintenance difficulty. Attached Figure Description

[0016] This manual includes the following figures, which illustrate the following: Figure 1 This is a structural schematic diagram of a detachable fixing device for a reluctance rotary transformer according to the present invention. Figure 2 for Figure 1 A schematic diagram of the receiving ring of a detachable fixing device for a reluctance rotary transformer.

[0017] The markings in the diagram are: 1. Fixed base; 2. Rotary transformer; 3. Pressure plate; 4. Stator; 5. Locating pin; 6. Receiving ring; 7. Screw hole seat; 8. Screw; 9. Spring washer. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution, and to facilitate its implementation.

[0019] Please see Figure 1-2 A detachable fixing device for a reluctance rotary transformer includes a fixing base 1 mounted on a motor, a rotary transformer 2 embedded in the fixing base 1, and a clamping component for fixing the rotary transformer 2 on the fixing base 1, which is a pressure plate 3 covering the rotary transformer 2. By using the pressure plate 3 to fix the rotary transformer 2 inside the fixing base 1, and fixing the fixing base 1 to the motor, the operator can easily install the rotary transformer 2 onto the motor body. When it is necessary to repair or replace the rotary transformer 2, it can also be quickly disassembled, which greatly improves work efficiency and reduces maintenance difficulty.

[0020] The pressure plate 3 is fan-shaped, and the rotary transformer 2 is located at the center of the pressure plate 3. The fan-shaped pressure plate 3 can be set along the outer circle of the rotary transformer 2 and match the outer circle shape of the rotary transformer 2, so that the pressure plate 3 can better press the rotary transformer 2, and ensure that the outer side of the rotary transformer 2 is evenly stressed during pressing, reducing shaking. The fan-shaped pressure plate 3 retains a part of the notch to facilitate the subsequent insertion of the positioning structure.

[0021] The outer circle of the rotary transformer 2 is provided with a stator 4. The diameter of the stator 4 is larger than the inner diameter of the pressure plate 3, and the diameter of the rotary transformer 2 is smaller than the inner diameter of the pressure plate 3. The pressure plate 3 can be used to fix the stator 4 in the fixed base 1 to prevent the stator 4 and the rotary transformer 2 from falling off the fixed base 1.

[0022] A positioning pin 5 is provided between the stator 4 and the fixed base 1. The outer edge of the stator 4 and the inner edge of the fixed base 1 are provided with semi-circular grooves that cooperate with the positioning pin 5. The positioning pin 5 can accurately position the rotary transformer 2 in the circumference, prevent the rotary transformer 2 from rotating during motor operation, and ensure the accuracy and stability of the rotary transformer 2 detection.

[0023] The bottom of the inner side of the fixed base 1 is provided with a receiving ring 6 located below the stator 4; the receiving ring 6 can support the stator 4 and prevent the rotary transformer 2 from being directly pressed against the motor, causing damage to the rotary transformer 2.

[0024] The fixed base 1 is provided with a screw hole seat 7, and the screw hole seat 7 is provided with a screw 8 that cooperates with the screw hole seat 7 and passes through the pressure plate 3; the pressure plate 3 is fixed to the fixed base 1 by the screw 8.

[0025] The pressure plate 3 is evenly provided with arc-shaped mounting grooves, and the screw 8 passes through the mounting groove. The head diameter of the screw 8 is larger than the width of the mounting groove; the screw 8 can fix the pressure plate 3.

[0026] A spring washer 9 is provided between the screw 8 and the pressure plate 3; the spring washer 9 effectively prevents the pressure plate 3 from loosening when the motor vibrates, ensuring the fixed stability of the rotary transformer 2 during motor operation and improving the reliability of the motor system.

[0027] The fixed base 1 is provided with multiple arc-shaped grooves evenly; this makes it easy to fix the fixed base 1 to the motor with screws, and also gives the fixed base 1 a certain range of installation angles, which is convenient for installation.

[0028] Working principle: First, fix the mounting base 1 to the motor with screws. After fixing the mounting base 1, insert the rotary transformer 2 into the circular slot in the center of the mounting base 1, and align the stator 4 with the semi-circular slot on the mounting base 1, and insert the positioning pin 5. Then, press the pressure plate 3 onto the surface of the stator 4, so that the mounting groove on the surface of the pressure plate 3 corresponds to the screw hole seat 7. Then, screw the screw 8 into the screw hole seat 7 and put on the spring washer 9. The overall structure is simple, and the operator can easily install the rotary transformer 2 onto the motor body. When it is necessary to repair or replace the rotary transformer 2, it can also be quickly disassembled, which greatly improves work efficiency and reduces maintenance difficulty.

[0029] The technical advantages of this utility model are as follows: by using a pressure plate 3 to fix the rotary transformer 2 inside the fixed base 1, and the fixed base 1 is fixed on the motor, the operator can easily install the rotary transformer 2 onto the motor body. When it is necessary to repair or replace the rotary transformer 2, it can also be quickly disassembled, which greatly improves work efficiency and reduces maintenance difficulty.

[0030] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A detachable fixing device for a reluctance rotary transformer, characterized in that: Includes a fixed base (1) installed on the motor, the rotary transformer (2) is embedded in the fixed base (1), the fixed base (1) is provided with a clamping member for fixing the rotary transformer (2), the clamping member is a pressure plate (3) covering the rotary transformer (2).

2. The detachable fixing device for a reluctance rotary transformer according to claim 1, characterized in that: The pressure plate (3) is fan-shaped, and the rotary transformer (2) is located at the center of the pressure plate (3).

3. A detachable fixing device for a reluctance rotary transformer according to claim 1 or 2, characterized in that: The outer circle of the rotary transformer (2) is provided with a stator (4), the diameter of the stator (4) is greater than the inner diameter of the pressure plate (3), and the diameter of the rotary transformer (2) is smaller than the inner diameter of the pressure plate (3).

4. The detachable fixing device for a reluctance rotary transformer according to claim 3, characterized in that: A positioning pin (5) is provided between the stator (4) and the fixed base (1), and a semi-circular groove that cooperates with the positioning pin (5) is provided on the outer edge of the stator (4) and the inner edge of the fixed base (1).

5. A detachable fixing device for a reluctance rotary transformer according to claim 4, characterized in that: The bottom of the inner side of the fixed base (1) is provided with a receiving ring (6) located below the stator (4).

6. The detachable fixing device for a reluctance rotary transformer according to claim 1, characterized in that: The fixed base (1) is provided with a screw hole seat (7), and the screw hole seat (7) is provided with a screw (8) that cooperates with the screw hole seat (7) and passes through the pressure plate (3).

7. A detachable fixing device for a reluctance rotary transformer according to claim 6, characterized in that: The pressure plate (3) is uniformly provided with arc-shaped mounting grooves, and the screw (8) passes through the mounting groove. The head diameter of the screw (8) is greater than the width of the mounting groove.

8. A detachable fixing device for a reluctance rotary transformer according to claim 6 or 7, characterized in that: A spring washer (9) is provided between the screw (8) and the pressure plate (3).

9. A detachable fixing device for a reluctance rotary transformer according to claim 1, characterized in that: The fixed base (1) is provided with multiple arc-shaped grooves evenly distributed.

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