Middle-large synchronous motor rotor magnetic pole installation positioning auxiliary device

Abstract

The invention relates to the technical field of synchronous motors, in particular to a middle-large size synchronous motor rotor magnetic pole installing and positioning auxiliary device which comprises a motor supporting block and an insulating plate, and the two sides of the motor supporting block are provided with abutting faces used for applying pressure to the insulating plate. A mounting hole is formed in the motor supporting block, a supporting block bolt is inserted into the mounting hole, a stress part is arranged on the end face of one end of each insulating plate, force applying pieces capable of forming horizontal or inclined upward thrust on the stress parts are arranged on the two sides of the motor supporting block, and during mounting, the force applying pieces apply outward pushing acting force to the stress parts of the two insulating plates firstly, and then the motor supporting block bolt is inserted into the motor supporting block bolt. The motor supporting block has the advantage that the situation that the insulating plate jacks the magnetic pole supporting plate in the installation process of the motor supporting block is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of synchronous motors, and in particular to a rotor pole installation and positioning auxiliary device for medium-to-large synchronous motors. Background Art

[0002] With the continuous advancement of industrial automation and power electronics technology, medium and large motors are increasingly used in various types of mechanical equipment. In the design and manufacturing process of medium and large motors, it is crucial to ensure the stable operation and long-term reliability of the motors. The motor support block and insulation plate are an important part of the motor's internal insulation system. Their main function is to support and fix the insulation material of the motor winding to prevent the winding from directly contacting the motor housing, thereby ensuring the safe operation of the motor.

[0003] The existing motor support block structure is as follows Figure 1 As shown, the two sides of the support block 10 are pressed against an insulating pressure plate 20 respectively, and the support block 10 is fixed and locked by bolts. However, in the actual installation process, it is necessary to first complete the placement of the insulating pressure plate 20. At this time, the insulating pressure plate 20 will be at the lowest position under the action of gravity, and then the support block 10 is installed. In the process of installing the support block 10, the support block 10 will gradually press against the insulating pressure plates 20 on both sides, and as the support block 10 is pressed, the insulating pressure plate 20 will also be forced to slide downward. In addition, in order to form a better ventilation effect, the bottom end of the insulating pressure plate 20 will be designed as a conical structure, which makes it very easy for the magnetic pole support plate 30 to be damaged when the end of the insulating pressure plate 20 presses against the magnetic pole support plate 30. Summary of the invention

[0004] In order to prevent the insulating plate from damaging the magnetic pole support plate during the installation of the motor support block, the present application provides a rotor magnetic pole installation and positioning auxiliary device for medium and large synchronous motors.

[0005] The present application provides a medium-to-large synchronous motor rotor magnetic pole installation and positioning auxiliary device, which adopts the following technical solution: A medium-to-large synchronous motor rotor pole installation and positioning auxiliary device includes a motor support block and an insulating plate. The motor support block is provided with a resistance surface on both sides for applying pressure to the insulating plate. The motor support block is provided with a mounting hole, and a support block bolt is inserted into the mounting hole. One end surface of the insulating plate is provided with a force-bearing portion. The motor support block is provided with force-applying members on both sides that can form horizontal or oblique upward thrust on the force-bearing portion. During installation, the force-applying members first apply an outward thrust to the force-bearing portions of the two insulating plates, and then the resistance surfaces contact and press the insulating plates.

[0006] In one of the embodiments: a plug hole connected to the mounting hole is provided on the side of the motor support block, and the force-applying member is a push rod slidably installed in the plug hole, and the length of the push rod is greater than the depth of the plug hole.

[0007] In one embodiment, the push rod is an elastic telescopic rod.

[0008] In one of the embodiments: the force applying member is an elastic pin installed on the side of the motor support block.

[0009] In one embodiment, the force applying member is an elastic sheet.

[0010] In one embodiment, the elastic sheet is L-shaped and is rotatably or swingably mounted on the motor support block at the bend.

[0011] In one of the embodiments: a through hole is provided at the bending portion of the elastic sheet, the elastic sheet is mounted on the motor support block by means of mounting bolts, and the elastic sheet can swing on the mounting bolts.

[0012] In one of the embodiments: a contact surface is provided on the force-bearing portion, and in the installed state, the contact surface is vertically arranged or inclined with the upper end toward the motor support block; a mounting surface opposite to the contact surface is provided on the motor support block, and the force-applying member is installed on the mounting surface, and when the two insulating plates are at the lowest position, a gap is provided between the mounting surface and the contact surface of the motor support block during installation.

[0013] In one of the embodiments: a countersunk hole is provided at the upper end of the mounting hole, and an elastic member is installed in the countersunk hole.

[0014] In one of the embodiments: at least one ventilation hole is provided on the motor support block, and the ventilation hole is arranged perpendicular to the mounting hole.

[0015] In summary, the present application has the following beneficial effects: through the setting of the force-applying member, when the motor support block is installed, the insulating plates on both sides can be pushed to both sides by the force-applying member, so that the insulating plates are pushed to a higher position, and the lower end of the insulating plates are separated from the pole support plate, and finally the contact surface of the motor support block is contacted and pressed against the insulating plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an existing positioning auxiliary device; Figure 2 is a schematic structural diagram of a positioning auxiliary device according to Embodiment 1; Figure 3 is a structural schematic diagram of the motor support block in the first embodiment; Figure 4 is a cross-sectional view of a positioning auxiliary device according to Embodiment 1; Figure 5 is a cross-sectional view of a positioning auxiliary device of Embodiment 2; Figure 6 is a cross-sectional view of a positioning auxiliary device of Embodiment 3; Figure 7is a schematic structural diagram of a positioning auxiliary device according to a fourth embodiment; Figure 8 It is a cross-sectional view of the positioning auxiliary device of embodiment 4.

[0017] In the figure, 100, motor support block; 110, abutment surface; 120, mounting hole; 130, countersunk hole; 140, ventilation hole; 150, mounting surface; 200, insulating plate; 210, force-bearing part; 211, abutment surface; 212, guide structure; 300, support block bolt; 400, elastic member; 500, force-applying member; 600, gasket. DETAILED DESCRIPTION

[0018] The present application is further described in detail below in conjunction with the accompanying drawings.

[0019] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0020] Embodiment 1: A medium-to-large synchronous motor rotor magnetic pole installation and positioning auxiliary device, such as Figure 2 As shown, it includes a motor support block 100 and an insulating plate 200 . The motor support block 100 is an inverted conical structure. Two insulating plates 200 are provided and are respectively located on both sides of the motor support block 100 .

[0021] Reference Figure 2 and 3 The motor support block 100 is provided with abutment surfaces 110 on both sides thereof for applying pressure to the insulating plate 200. The motor support block 100 is provided with mounting holes 120, which are arranged in the vertical direction and are provided with two mounting holes 120 for inserting the support block bolts 300.

[0022] At least one ventilation hole 140 is provided on the motor support block 100 . The ventilation hole 140 is vertically arranged with respect to the mounting hole 120 . In this embodiment, two ventilation holes 140 are provided.

[0023] A countersunk hole 130 is provided at the top of the mounting hole 120. The diameter of the countersunk hole 130 is larger than that of the mounting hole 120. Figure 4 As shown, an elastic member 400 is disposed in the counterbore 130. The elastic member 400 may be a spring or a disc spring. In this embodiment, a disc spring is used as an example. In order to make the motor support block 100 more evenly stressed, a washer 600 is connected between the two support block bolts 300. The washer 600 is located between the elastic member 400 and the nut of the motor support block 100.

[0024] A force-bearing portion 210 is provided on one end surface of the insulating plate 200. The force-bearing portion 210 is located at the top of the insulating plate 200 and is disposed toward the motor support block 100. An abutting surface 211 is provided on the force-bearing portion 210. A bevel or arc chamfer is provided on the top of the abutting surface 211 to form a guide structure 212. In this embodiment, the arc chamfer is taken as an example. In the installed state, the abutting surface 211 is vertically disposed or tilted toward the motor support block 100 at the upper end. In this embodiment, it is vertically disposed.

[0025] like Figure 3 and 4 As shown, the two sides of the motor support block 100 are provided with force applying members 500 that can form a horizontal or oblique upward thrust on the force bearing part 210, wherein the side surfaces at both ends of the motor support block 100 are concavely arranged, and the concave part forms a mounting surface 150 opposite to the abutting surface 211, and the mounting surface 150 is preferably a vertical surface. In addition, during installation, if the two insulating plates 200 are located at the lowest position, a gap is arranged between the mounting surface 150 of the motor support block 100 and the abutting surface 211 on the force bearing part 210 during installation. This arrangement facilitates the installation of the motor support block 100 on the one hand, and on the other hand, avoids excessive force acting on the force bearing part 210 during installation of the motor support block 100, which causes the insulating plate 200 to tilt or the motor support block 100 to be stuck, etc., resulting in installation failure.

[0026] In this embodiment, the force applying member 500 is an elastic pin installed on the side of the motor support block 100. A receiving hole is provided on the mounting surface 150, and the elastic pin is installed in the receiving hole by a bolt.

[0027] In addition, when the elastic pin is not subjected to force, it protrudes from the mounting surface 150, and the protruding height is greater than the maximum distance between the mounting surface 150 and the abutting surface 211. The maximum distance between the mounting surface 150 and the abutting surface 211 refers to the average value of the distance between the two insulating plates 200 and the relative mounting surface 150 when both insulating plates 200 are at the highest position.

[0028] Working principle: First, place the two insulating plates 200 , then place the motor support block 100 between the two insulating plates 200 , and install the elastic member 400 and the support block bolt 300 to the motor support block 100 , align the support block bolt 300 with the threaded hole, and then tighten the support block bolt 300 until the gasket 600 is against the elastic member 400 .

[0029] At this time, continue to rotate the support block bolt 300 to drive the motor support block 100 to move downward. During this process, the force-applying member 500 contacts the guide structure 212 and shrinks under the guidance of the guide structure 212 until the force-applying member 500 is abutted against the abutment surface 211 of the force-bearing part 210. At this time, the force-applying member 500 will apply an outward pushing force to the force-bearing part 210 of the two insulating plates 200, and under the outward pushing force, the two insulating plates 200 are pushed upward to the highest position.

[0030] Afterwards, the support block bolt 300 is continuously rotated until the abutting surface 110 of the motor support block 100 contacts the insulating plate 200 , and the support block bolt 300 is then tightened.

[0031] Example 2: Figure 5 As shown, the difference from Example 1 is that in this embodiment, the mounting surface 150 of the motor support block 100 is provided with a socket connected to the mounting hole 120, and the force applying member 500 is a push rod slidably installed in the socket, and the length of the push rod is greater than the depth of the socket.

[0032] In addition, it should be noted that in other embodiments, the push rod may also be configured as an elastic telescopic rod.

[0033] Furthermore, a guide surface is provided on one end of the push rod facing the support block bolt 300, and the cross section of the push rod is preferably a rectangular structure. At the same time, after the support block bolt 300 is installed, the protrusion height of the push rod on the installation surface 150 is less than or equal to the maximum distance between the installation surface 150 and the abutment surface 211.

[0034] Working principle: First, place the two insulating plates 200 , and then place the motor support block 100 between the two insulating plates 200 . At this time, the push rod is received in the insertion hole, so that the motor support block 100 will not interfere with the force-bearing portion 210 .

[0035] Then install the elastic member 400 and the support block bolt 300 to the motor support block 100. When installing the support block bolt 300, the push rod will be pushed outward. Therefore, at this time, the motor support block 100 needs to be suspended and cannot contact the insulating plate 200. In this process, the push rod will contact the abutment surface 211 and push the insulating plate 200 up in the inclined direction. When the support block bolt 300 passes through the motor support block 100, align the support block bolt 300 with the threaded hole, and then tighten the support block bolt 300.

[0036] Example 3: Figure 6 As shown, the difference from the first embodiment is that the force applying member 500 in this embodiment is an elastic sheet with a lower end fixedly mounted on the mounting surface 150, and the upper end of the elastic sheet is tilted outward from the mounting surface 150. The left side of the figure shows the state when the elastic sheet is in contact with the abutting surface 211 and deformed by force, and the right side shows the natural state when the elastic sheet is not in contact with the abutting surface 211.

[0037] Example 4: Figure 7 As shown, the difference from the third embodiment is that the elastic sheet in this embodiment is L-shaped and is rotatably or swingably mounted on the motor support block 100 at the bend.

[0038] Specifically, a through hole is provided at the bend of the elastic sheet, and the elastic sheet is installed on the motor support block 100 by means of mounting bolts. The through hole is larger than the outer diameter of the stud of the mounting bolt, and a gap is provided between the nut of the mounting bolt and the elastic sheet, so that the elastic sheet can swing on the mounting bolt.

[0039] In addition, the length of the elastic sheet above the mounting bolt is greater than the length below, so that the elastic sheet is in a natural state, see Figure 7 In the middle left structure, the upper end of the elastic sheet is flipped outward by gravity, so that when the motor support block 100 is installed, the lower part of the elastic sheet can directly enter between the installation surface 150 and the abutment surface 211 without interfering with the force-bearing part 210.

[0040] When the upper part of the elastic sheet contacts the force-bearing part 210, a seesaw effect is formed, that is, the lower part of the elastic sheet contacts the contact surface 211 and forms an oblique upward thrust, so that it is easier to push the insulating plate 200 upward, and finally form Figure 7 The middle right side structure is the structure after the elastic sheet abuts against the abutting surface 211 .

[0041] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A medium-to-large synchronous motor rotor magnetic pole installation and positioning auxiliary device, comprising a motor support block (100) and an insulating plate (200), wherein both sides of the motor support block (100) are provided with a resistance surface (110) for applying pressure to the insulating plate (200), and the motor support block (100) is provided with a mounting hole (120), and a support block bolt (300) is inserted into the mounting hole (120), wherein: A force-bearing portion (210) is provided on one end surface of the insulating plate (200), and force-applying members (500) capable of forming a horizontal or oblique upward thrust on the force-bearing portion (210) are provided on both sides of the motor support block (100). During installation, the force-applying members (500) first apply an outward thrust to the force-bearing portions (210) of the two insulating plates (200), and then the contact surfaces (110) are in contact and pressed against the insulating plates (200).

2. The auxiliary device for installing and positioning the rotor magnetic poles of a medium-to-large synchronous motor according to claim 1 is characterized in that: A plug hole connected to the mounting hole (120) is provided on the side of the motor support block (100); the force applying member (500) is a push rod slidably mounted in the plug hole; the length of the push rod is greater than the depth of the plug hole.

3. The auxiliary device for installing and positioning the rotor magnetic poles of a medium-to-large synchronous motor according to claim 2 is characterized in that: The push rod is an elastic telescopic rod.

4. The rotor magnetic pole installation and positioning auxiliary device for medium and large synchronous motors according to claim 1 is characterized in that: The force applying member (500) is an elastic pin installed on the side of the motor support block (100).

5. The auxiliary device for installing and positioning the rotor magnetic poles of a medium-to-large synchronous motor according to claim 1 is characterized in that: The force applying member (500) is an elastic sheet.

6. The auxiliary device for installing and positioning the rotor magnetic poles of a medium-to-large synchronous motor according to claim 5 is characterized in that: The elastic sheet is L-shaped and is rotatably or swingably mounted on the motor support block (100) at the bend.

7. The auxiliary device for installing and positioning the rotor magnetic poles of a medium-to-large synchronous motor according to claim 6 is characterized in that: A through hole is provided at the bending portion of the elastic sheet, the elastic sheet is mounted on the motor support block (100) via mounting bolts, and the elastic sheet can swing on the mounting bolts.

8. The rotor pole installation and positioning auxiliary device for medium-to-large synchronous motors according to any one of claims 1 to 7, characterized in that: The force-bearing portion (210) is provided with a contact surface (211), and in the installed state, the contact surface (211) is arranged vertically or inclined with the upper end facing the motor support block (100); the motor support block (100) is provided with a mounting surface (150) opposite to the contact surface (211), and the force-applying member (500) is mounted on the mounting surface (150), and when the two insulating plates (200) are located at the lowest position, the motor support block (100) is installed with a gap between the mounting surface (150) and the contact surface (211).

9. The rotor magnetic pole installation and positioning auxiliary device for medium and large synchronous motors according to claim 1 is characterized in that: A countersunk hole (130) is provided at the upper end of the mounting hole (120), and an elastic member (400) is installed in the countersunk hole (130).

10. The rotor magnetic pole installation and positioning auxiliary device for medium and large synchronous motors according to claim 1 is characterized in that: At least one ventilation hole (140) is provided on the motor support block (100), and the ventilation hole (140) is arranged perpendicular to the mounting hole (120).

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