A split fixing device for motor rotating rectifier

Abstract

This utility model discloses a separate fixing device for a rotating rectifier in a motor, belonging to the technical field of motor equipment. It includes a rotor body with a cylindrical inner cavity. Two arc-shaped inner grooves are symmetrically formed on the upper end of the rotor body, each containing a rotating rectifier assembly. A limiting mechanism includes a threaded rod rotatably connected between the top and bottom of the cylindrical inner cavity. The upper end of the threaded rod penetrates the top of the cylindrical inner cavity and extends to the upper end of the rotor body. A pressure plate is threaded onto the threaded rod. This device addresses usability issues by incorporating a limiting mechanism. By rotating the threaded rod, the pressure plate and two circular limiting blocks can be moved, simultaneously and conveniently fixing both rotating rectifier assemblies. Compared to traditional multi-bolt fixing, this reduces the workload of fixing and subsequent maintenance.

Description

Technical Field

[0001] This utility model relates to the field of motor equipment technology, and in particular to a separate fixing device for a motor rotary rectifier. Background Technology

[0002] The motor rotary rectifier is the core component of the brushless excitation system. Its function is to convert the three-phase AC power generated by the AC exciter into DC power, and provide excitation current to the rotor winding of the synchronous motor, thereby realizing the brushless operation of the motor. Traditional motor rotary rectifiers are usually fixed to the rotor with multiple bolts. This method requires tightening multiple bolts sequentially during installation, which undoubtedly consumes a lot of time and manpower, reducing actual production efficiency. Moreover, the disassembly process is also complicated when the rotary rectifier malfunctions or requires regular maintenance. Therefore, to solve this problem, we need to consider designing a separate fixing device for motor rotary rectifiers. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a separate fixing device for a motor rotary rectifier. In terms of usage, it is equipped with a limiting mechanism. By rotating the threaded rod to drive the pressure plate and two circular limiting blocks, the two rotary rectifier components can be conveniently fixed at the same time. Compared with the traditional multi-bolt fixing, it reduces the workload of fixing and subsequent maintenance.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A separate fixing device for a rotating rectifier of an electric motor includes a rotor body with a cylindrical inner cavity inside. Two arc-shaped inner grooves are symmetrically formed at the upper end of the rotor body, and a rotating rectifier assembly is disposed within each of the two arc-shaped inner grooves. A limiting mechanism includes a threaded rod rotatably connected between the top and bottom of the cylindrical inner cavity. The upper end of the threaded rod penetrates the top of the cylindrical inner cavity and extends to the upper end of the rotor body. A pressure plate is threaded onto the threaded rod, and two circular limiting blocks are symmetrically fixedly connected to the lower end of the pressure plate.

[0005] Preferably, two guide rods are fixedly connected between the inner top and inner bottom of the cylindrical cavity, and both guide rods pass through the pressure plate and are slidably connected to the pressure plate.

[0006] Preferably, the upper end of the threaded rod is provided with a cross groove.

[0007] Preferably, the rotary rectifier assembly includes an arc-shaped positioning block disposed in an arc-shaped inner groove, an arc-shaped fixing plate fixedly connected to the inner side of the arc-shaped positioning block, a circular limiting groove opened at the upper end of the arc-shaped fixing plate, and a rotary rectifier body fixedly connected to the upper end of the arc-shaped positioning block.

[0008] Preferably, the inner sides of both arc-shaped positioning blocks are in contact with the inner wall of the corresponding arc-shaped inner groove.

[0009] Preferably, the lower end of the pressure plate is attached to the upper end of the two arc-shaped fixing plates, and the two circular limiting blocks are slidably connected to the inner wall of the corresponding circular limiting groove.

[0010] Compared with the prior art, the advantages of this utility model are as follows: A limiting mechanism is installed. By placing the two rotating rectifier assemblies into their respective arc-shaped inner grooves and moving them towards each other, the rotating threaded rod drives the pressure plate downward, causing two circular limiting blocks to insert into their corresponding circular limiting slots. This allows for convenient and quick fixing and limiting of the two rotating rectifier assemblies, as well as subsequent disassembly and maintenance. The entire fixing process is convenient and efficient. Only one threaded rod needs to be rotated to fix the two rotating rectifier assemblies at the same time. Compared with the traditional multi-bolt fixing method, this significantly reduces the workload of installation and subsequent maintenance, and effectively improves the actual operating efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a separate fixing device for a motor rotary rectifier proposed in this utility model; Figure 2 for Figure 1 A sectional view; Figure 3 for Figure 2 A schematic diagram of the structure after removing the two rotating rectifier components; Figure 4 This is a schematic diagram of the structure of two rotating rectifier assemblies.

[0012] In the figure: 1 rotor body, 2 cylindrical inner cavity, 3 arc-shaped inner groove, 4 threaded rod, 5 pressure plate, 6 circular limit block, 7 guide rod, 8 cross groove, 9 arc-shaped positioning block, 10 arc-shaped fixing plate, 11 circular limit groove, 12 rotating rectifier body. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] Reference Figures 1-4A separate fixed device for a rotating rectifier for an electric motor includes a rotor body 1, which is usually mounted on the shaft of the motor and can rotate in the magnetic field generated by the stator. A cylindrical inner cavity 2 is provided inside the rotor body 1, and two arc-shaped inner grooves 3 are symmetrically provided on the upper end of the rotor body 1. A rotating rectifier assembly is provided in each of the two arc-shaped inner grooves 3. The system also includes a limiting mechanism, which includes a threaded rod 4 rotatably connected between the top and bottom of the cylindrical inner cavity 2. The upper end of the threaded rod 4 passes through the top of the cylindrical inner cavity 2 (with a bearing installed at the penetration point) and extends to the upper end of the rotor body 1. A cross groove 8 is provided at the upper end of the threaded rod 4, allowing the operator to control the rotation of the threaded rod 4 using tools. A pressure plate 5 is threadedly connected to the threaded rod 4. The lower end of the pressure plate 5 is in contact with the upper ends of two arc-shaped fixing plates 10. Two circular limiting blocks 6 are symmetrically fixedly connected to the lower end of the pressure plate 5. Both circular limiting blocks 6 are slidably connected to the inner wall of the corresponding circular limiting groove 11. By rotating the threaded rod 4, the pressure plate 5 is moved down and in contact with the two arc-shaped fixing plates 10, so that the two circular limiting blocks 6 move down and are inserted into the corresponding circular limiting groove 11, thereby achieving the fixed limiting of the two rotating rectifier components. Two guide rods 7 are fixedly connected between the top and bottom of the cylindrical inner cavity 2. Both guide rods 7 pass through the pressure plate 5 and are slidably connected to the pressure plate 5. The rotary rectifier assembly includes an arc-shaped positioning block 9 disposed within an arc-shaped inner groove 3. The inner side of the arc-shaped positioning block 9 is in contact with the inner wall of the arc-shaped inner groove 3 to ensure pre-positioning before fixing. An arc-shaped fixing plate 10 is fixedly connected to the inner side of the arc-shaped positioning block 9. A circular limiting groove 11 is opened at the upper end of the arc-shaped fixing plate 10. A rotary rectifier body 12 is fixedly connected to the upper end of the arc-shaped positioning block 9. This is existing technology, which can convert the three-phase AC power generated by the AC exciter into DC power to provide excitation current for the rotor winding of the synchronous motor.

[0015] In this utility model, in the initial state, the upper end of the pressure plate 5 is attached to the inner top of the cylindrical inner cavity 2. When used for the first time, the two rotary rectifier assemblies are first placed in the arc-shaped inner grooves 3 on the left and right sides of the rotor body 1, and then the two rotary rectifier assemblies are controlled to move towards each other, so that the two arc-shaped fixing plates 10 are inserted into the cylindrical inner cavity 2 until the inner side of the two arc-shaped positioning blocks 9 is attached to the inner wall of the corresponding arc-shaped inner groove 3. This ensures that the two circular limiting grooves 11 are aligned with the corresponding circular limiting blocks 6, so as to achieve the pre-positioning before the fixing operation. After the above positioning operation is completed, the staff uses a tool to insert into the cross groove 8 at the upper end of the threaded rod 4, and then controls the tool to drive the threaded rod 4 to rotate, causing the pressure plate 5 to move downward. As the pressure plate 5 moves downward, the two circular limiting blocks 6 also move downward and are respectively inserted into the circular limiting grooves 11 at the upper end of the corresponding arc-shaped fixing plates 10, until the lower end of the pressure plate 5 is tightly attached to the upper end of the two arc-shaped fixing plates 10. In this way, the two rotating rectifier assemblies can be fixed and limited on the rotor body 1. When it is necessary to disassemble the two rotating rectifier assemblies in the future, simply rotate the threaded rod 4 in the opposite direction to drive the pressure plate 5 to move upward, so that the two circular limiting blocks 6 can be completely removed from the corresponding circular limiting grooves 11, and the two rotating rectifier assemblies can be removed. The whole fixing process is relatively convenient. Compared with the traditional multi-bolt fixing, only one threaded rod 4 needs to be rotated to fix the two rotating rectifier assemblies, and the subsequent disassembly is also more convenient, reducing the actual installation and maintenance workload.

[0016] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A motor commutator split mount characterized by, include: The rotor body (1) has a cylindrical inner cavity (2) inside. The upper end of the rotor body (1) has two arc-shaped inner grooves (3) symmetrically opened on the left and right. A rotary rectifier assembly is provided in each of the two arc-shaped inner grooves (3). The limiting mechanism includes a threaded rod (4) rotatably connected between the top and bottom of the cylindrical inner cavity (2). The upper end of the threaded rod (4) passes through the top of the cylindrical inner cavity (2) and extends to the upper end of the rotor body (1). A pressure plate (5) is threadedly connected to the threaded rod (4). Two circular limiting blocks (6) are symmetrically fixed to the lower end of the pressure plate (5).

2. A split mount for a motor commutator, as described in claim 1, wherein: Two guide rods (7) are fixedly connected between the inner top and inner bottom of the cylindrical inner cavity (2). Both guide rods (7) pass through the pressure plate (5) and are slidably connected to the pressure plate (5).

3. A split mount for a motor commutator, as described in claim 1, wherein: The upper end of the threaded rod (4) is provided with a cross groove (8).

4. A split mount for a motor commutator, as described in claim 1, wherein: The rotary rectifier assembly includes an arc-shaped positioning block (9) disposed in an arc-shaped inner groove (3), an arc-shaped fixing plate (10) is fixedly connected to the inner side of the arc-shaped positioning block (9), a circular limiting groove (11) is opened at the upper end of the arc-shaped fixing plate (10), and a rotary rectifier body (12) is fixedly connected to the upper end of the arc-shaped positioning block (9).

5. A split mount for a motor commutator, as described in claim 4, wherein: The inner sides of the two arc-shaped positioning blocks (9) are in contact with the inner wall of the corresponding arc-shaped inner groove (3).

6. A split mount for a motor commutator, as described in claim 4, wherein: The lower end of the pressure plate (5) is attached to the upper end of the two arc-shaped fixing plates (10), and the two circular limiting blocks (6) are slidably connected to the inner wall of the corresponding circular limiting groove (11).

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