Auxiliary device for rotor pole installation and positioning of medium and large synchronous motors

Abstract

This application relates to the technical field of synchronous motors, and particularly to an auxiliary device for installing and positioning the rotor poles of a medium and large-sized synchronous motor. The auxiliary device for installing and positioning the rotor poles of the medium and large-sized synchronous motor includes a motor support block and an insulating plate. On both sides of the motor support block, there are contact surfaces for pressing the insulating plate. The motor support block is provided with mounting holes, and support bolts are inserted into the mounting holes. One end face of the insulating plate is provided with a force-receiving part. On both sides of the motor support block, there are force-applying members that can form a horizontal or obliquely upward thrust on the force-receiving part. During installation, the force-applying members first apply an outward pushing force to the force-receiving parts of the two insulating plates, and then the contact surfaces come into contact with and press the insulating plates. This application has the advantage of preventing the motor support block from damaging the pole support plate of the insulating plate during the installation process.

Description

Technical Field

[0001] The present application relates to the technical field of synchronous motors, and particularly relates to an auxiliary device for installing and positioning the rotor poles of a medium and large-sized synchronous motor. Background Art

[0002] With the continuous progress of industrial automation and power electronics technology, medium and large-sized motors are increasingly widely used in various mechanical equipment. During the design and manufacturing process of medium and large-sized motors, ensuring the stable operation and long-term reliability of the motors is crucial. The motor support block pressing the insulating plate is an important part of the internal insulation system of the motor. Its main function is to support and fix the insulating 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 Figure 1 shown. Both sides of the support block 10 are respectively pressed against an insulating pressing plate 20, and the support block 10 is fixed and locked in place by bolts. However, during the actual installation process, it is necessary to first place the insulating pressing plate 20. At this time, the insulating pressing plate 20 will be in the lowest position under the action of gravity, and then the support block 10 is installed. During the installation process of the support block 10, the support block 10 will gradually press against the insulating pressing plates 20 on both sides, and as the support block 10 is tightened, the insulating pressing 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 pressing plate 20 is designed as a conical structure, which makes it very easy to damage the pole support plate 30 during the process of the end of the insulating pressing plate 20 pressing against the pole support plate 30. Summary of the Invention

[0004] In order to avoid the insulating plate damaging the pole support plate during the installation of the motor support block, the present application provides an auxiliary device for installing and positioning the rotor poles of a medium and large-sized synchronous motor.

[0005] An auxiliary device for installing and positioning the rotor poles of a medium and large-sized synchronous motor provided by the present application adopts the following technical solution:

[0006] An auxiliary device for installing and positioning the rotor poles of a medium and large-sized synchronous motor includes a motor support block and an insulating plate. Both sides of the motor support block are provided with contact surfaces for pressing the insulating plate. The motor support block is provided with mounting holes, and support block bolts are inserted into the mounting holes. One end face of the insulating plate is provided with a force-receiving portion. Both sides of the motor support block are provided with force-applying members that can form a horizontal or obliquely upward thrust on the force-receiving portion. During installation, the force-applying members first apply an outward pushing force to the force-receiving portions of the two insulating plates, and then the contact surfaces come into contact with and press the insulating plates; the force-receiving portion is provided with an abutting surface. In the installed state, the abutting surface is vertically arranged or is inclined with the upper end facing the motor support block, and the surface of the force-receiving portion opposite to the abutting surface is inclined with the lower end facing the motor support block.

[0007] In one embodiment: a jack communicating with the mounting hole is provided on the side surface of the motor support block, the force applying member is a push rod slidably mounted in the jack, and the length of the push rod is greater than the depth of the jack.

[0008] In one embodiment: the push rod is an elastic telescopic rod.

[0009] In one embodiment: the force applying member is an elastic pin mounted on the side surface of the motor support block.

[0010] In one embodiment: the force applying member is an elastic sheet.

[0011] In one embodiment: the elastic sheet is L-shaped and is rotatably or swingably mounted on the motor support block at the bending position.

[0012] In one embodiment: a through hole is provided at the bending position of the elastic sheet, the elastic sheet is mounted on the motor support block through a mounting bolt, and the elastic sheet can swing on the mounting bolt.

[0013] In one embodiment: a mounting surface opposite to the abutting surface is provided on the motor support block, the force applying member is mounted on the mounting surface, and when the two insulating plates are in the lowest position, there is a gap between the mounting surface and the abutting surface when the motor support block is installed.

[0014] In one embodiment: a counterbore is provided at the upper end of the mounting hole, and an elastic member is mounted in the counterbore.

[0015] In one embodiment: at least one ventilation hole is provided on the motor support block, and the ventilation hole is perpendicular to the mounting hole.

[0016] To sum up, 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 open to the two sides by the force applying member first, so that the insulating plates are pushed to a higher position, the lower ends of the insulating plates are separated from the pole support plate, and finally the abutting surface of the motor support block contacts and presses the insulating plates. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the existing positioning auxiliary device;

[0018] Figure 2 is a schematic structural diagram of the positioning auxiliary device in the first embodiment;

[0019] Figure 3 is a schematic structural diagram of the motor support block in the first embodiment;

[0020] Figure 4 is a sectional view of the positioning auxiliary device in the first embodiment;

[0021] Figure 5 It is a cross-sectional view of the positioning assistance device in the second embodiment;

[0022] Figure 6 It is a cross-sectional view of the positioning assistance device in the third embodiment;

[0023] Figure 7 It is a schematic structural view of the positioning assistance device in the fourth embodiment;

[0024] Figure 8 It is a cross-sectional view of the positioning assistance device in the fourth embodiment.

[0025] In the figure, 100 is a motor support block; 110 is a contact surface; 120 is a mounting hole; 130 is a counterbore; 140 is a ventilation hole; 150 is a mounting surface; 200 is an insulating plate; 210 is a stressed part; 211 is an abutting surface; 212 is a guiding structure; 300 is a support block bolt; 400 is an elastic member; 500 is a force-applying member; 600 is a gasket. Detailed implementation manners

[0026] The following further describes the present application in detail with reference to the accompanying drawings.

[0027] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0028] Embodiment 1: A positioning and installation assistance device for the rotor poles of a medium and large synchronous motor, as Figure 2 shown, includes a motor support block 100 and an insulating plate 200. The motor support block 100 has an inverted conical structure, and there are two insulating plates 200, which are respectively located on both sides of the motor support block 100 and abut against it.

[0029] Referring to Figure 2 and 3 , contact surfaces 110 for pressing the insulating plate 200 are formed on both sides of the motor support block 100. Mounting holes 120 are provided on the motor support block 100. The mounting holes 120 are arranged vertically and there are two of them. The mounting holes 120 are used for inserting the support block bolts 300.

[0030] At least one ventilation hole 140 is provided on the motor support block 100. The ventilation hole 140 is perpendicular to the mounting hole 120. In this embodiment, there are two ventilation holes 140.

[0031] A counterbore 130 is provided at the top of the mounting hole 120. The diameter of the counterbore 130 is larger than that of the mounting hole 120, as Figure 4As shown, an elastic member 400 is disposed in the counterbore 130. The elastic member 400 can be a spring or a disc spring. In this embodiment, a disc spring is taken as an example. Among them, in order to make the force on the motor support block 100 more uniform, a gasket 600 is connected between the two support block bolts 300, and the gasket 600 is located between the elastic member 400 and the nut of the motor support block 100.

[0032] One end face of the insulating plate 200 is provided with a force-receiving portion 210. The force-receiving portion 210 is located at the top of the insulating plate 200 and is arranged toward the motor support block 100. A contact surface 211 is provided on the force-receiving portion 210. A slope or an arc chamfer is provided at the top of the contact surface 211 to form a guiding structure 212. In this embodiment, an arc chamfer is taken as an example. In the installed state, the contact surface 211 is arranged vertically or is inclined upward with the upper end toward the motor support block 100. In this embodiment, it is arranged vertically.

[0033] As Figure 3 and 4 As shown, on both sides of the motor support block 100, there are force-applying members 500 that can form a horizontal or obliquely upward thrust on the force-receiving portion 210. Among them, 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 contact surface 211. The mounting surface 150 is preferably a vertical surface. And, during installation, if the two insulating plates 200 are at the lowest position, there is a gap between the mounting surface 150 of the motor support block 100 and the contact surface 211 on the force-receiving portion 210 during installation. This setting facilitates the installation of the motor support block 100 on the one hand, and on the other hand, avoids the situation that when installing the motor support block 100, excessive force acts on the force-receiving portion 210, resulting in the tilting of the insulating plate 200 or the jamming of the motor support block 100, etc., which may cause the installation to fail.

[0034] In this embodiment, the force-applying member 500 is an elastic pin installed on the side surface 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 through a bolt.

[0035] In addition, when the elastic pin is in an unloaded state, it protrudes from the mounting surface 150, and the protruding height is greater than the maximum distance between the mounting surface 150 and the contact surface 211. Among them, the maximum distance between the mounting surface 150 and the contact surface 211 refers to the average value of the distances between the two insulating plates 200 and the opposite mounting surface 150 when the two insulating plates 200 are both at the highest position.

[0036] Working principle:

[0037] 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 bolts 300 on the motor support block 100 to align the support block bolts 300 with the threaded holes, and then tighten the support block bolts 300 until the gasket 600 abuts against the elastic member 400.

[0038] 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 application member 500 contacts the guiding structure 212 and contracts under the guidance of the guiding structure 212 until the force application member 500 abuts against the abutting surface 211 of the force receiving portion 210. At this time, the force application member 500 will apply an outward pushing force to the force receiving portions 210 of the two insulating plates 200. Under the outward pushing force, the two insulating plates 200 are pushed upward to the highest position.

[0039] After that, continue to rotate the support block bolt 300 until the abutting surface 110 of the motor support block 100 contacts the insulating plate 200, and then tighten the support block bolt 300.

[0040] Example 2: As Figure 5 shown, the difference from Example 1 is that in this example, the mounting surface 150 of the motor support block 100 is provided with a jack communicating with the mounting hole 120, the force application member 500 is a push rod slidably mounted in the jack, and the length of the push rod is greater than the depth of the jack.

[0041] In addition, it should be noted that in other embodiments, the push rod can also be set as an elastic telescopic rod.

[0042] And, a guiding surface is provided at one end of the push rod facing the support block bolt 300. Preferably, the cross-section of the push rod is a right-angled quadrilateral structure. At the same time, after the support block bolt 300 is installed, the protruding height of the push rod on the mounting surface 150 is less than or equal to the maximum distance between the mounting surface 150 and the abutting surface 211.

[0043] Working principle:

[0044] First, place the two insulating plates 200 well, and then place the motor support block 100 between the two insulating plates 200. At this time, the push rod is received in the jack, so that the motor support block 100 will not interfere with the force receiving portion 210.

[0045] Then install the elastic member 400 and the support block bolt 300 on the motor support block 100. When installing the support block bolt 300, the push rod will be pushed outwards. Therefore, at this time, the motor support block 100 needs to be suspended and not in contact with the insulating plate 200. During this process, the push rod is pushed out and will contact the abutting surface 211 and push the insulating plate 200 to move upward along 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.

[0046] Example 3: As Figure 6As shown, the difference from Embodiment 1 is that in this embodiment, the force - applying member 500 is an elastic sheet fixedly installed at the lower end on the mounting surface 150, and the upper end of the elastic sheet warps outwards from the mounting surface 150. Among them, the left side in the figure shows the state when the elastic sheet contacts the abutting surface 211 and deforms under force, and the right side shows the natural state when the elastic sheet does not contact the abutting surface 211.

[0047] Embodiment 4: As Figure 7 shown, the difference from Embodiment 3 is that in this embodiment, the elastic sheet is L - shaped and is rotatably or swingably installed at the bending part on the motor support block 100.

[0048] Specifically, a through - hole is provided at the bending part of the elastic sheet, and the elastic sheet is installed on the motor support block 100 through a mounting bolt. 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.

[0049] In addition, the length of the elastic sheet above the mounting bolt is greater than the length below, so that in the natural state of the elastic sheet, referring to Figure 7 the left - hand structure in the figure, the upper end of the elastic sheet is turned outwards by gravity. In this way, when the motor support block 100 is installed, the lower part of the elastic sheet can directly enter between the mounting surface 150 and the abutting surface 211 without interfering with the force - receiving part 210.

[0050] When the upper part of the elastic sheet contacts the force - receiving part 210, a seesaw effect will be formed, that is, the lower part of the elastic sheet will abut against the abutting surface 211 and form an obliquely upward thrust. In this way, it is easier to push the insulating plate 200 upwards, and finally form Figure 7 the right - hand structure in the figure, that is, the structure after the elastic sheet abuts against the abutting surface 211.

[0051] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this 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 abutting surfaces (110) are in contact and pressed against the insulating plates (200); The force-bearing portion (210) is provided with an abutting surface (211). In the installed state, the abutting surface (211) is arranged vertically or tilted with the upper end facing the motor support block (100), and the side of the force-bearing portion (210) opposite to the abutting surface (211) is tilted with the lower end facing the motor support block (100).

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 magnetic 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 motor support block (100) is provided with a mounting surface (150) opposite to the abutment surface (211); 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, a gap is formed between the mounting surface (150) and the abutment surface (211) of the motor support block (100) during installation.

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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