Motor insulation structure

Abstract

The utility model discloses a motor insulation structure, which relates to the technical field of brushless motors and comprises a motor base, a stator, a rotor and a shell, the stator is arranged at the top of the motor base and in the middle of the top of the motor base, the shell is arranged on the outer ring of the stator, a plurality of permanent magnets are arranged on the inner ring of the stator, and the permanent magnets are arranged on the outer ring of the motor base. The top of the rotor is provided with an insulating separator plate, the periphery of the rotor is provided with a winding group, and the rotor is provided with a fixing assembly used for rapidly fixing the winding group. According to the utility model, through the arrangement of the sliding blocks, the arc-shaped blocks and the insulating partition plates, the winding groups can be conveniently mounted and dismounted, when a single winding group breaks down, the single winding group can be independently maintained or replaced, and through the arrangement of the heat dissipation ribs which are in direct contact with the shell, the heat dissipation area is increased, and the heat dissipation efficiency is improved. Heat generated in the operation process of the motor can be quickly dissipated, and the insulation effect of the rotor is enhanced through the insulation partition plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technology field, concretely is a motor insulation structure. BACKGROUND

[0002] The motor rotor is the rotating part in the motor, and is the core component for energy conversion of the motor. The motor rotor interacts with the stator (the stationary part in the motor) to generate a rotating magnetic field, thereby realizing the conversion between electric energy and mechanical energy. The motor rotor insulation is not only the insulation of a single component, but also a complete system composed of multiple levels, multiple insulation materials and structures. This system needs to be able to withstand the electric stress, thermal stress and mechanical stress generated during the operation of the motor, and maintain good insulation performance throughout the life cycle of the motor.

[0003] At present, the winding group of the rotor is fixedly connected with the rotor on the existing insulation structure of the motor rotor, and cannot be disassembled. This leads to the fact that when a single winding group is damaged or fails, such as turn-to-turn short circuit, wire breakage, insulation aging breakdown and the like, even if the other winding groups are still intact, the damaged winding group cannot be replaced or repaired alone. In this case, in order to repair the motor, the entire rotor assembly must be completely discarded, even if the rotor body and the other winding groups still have use value. SUMMARY

[0004] The utility model aims at providing a motor insulation structure to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A motor insulation structure comprises:

[0007] A machine base;

[0008] A stator is arranged on the top of the machine base;

[0009] A rotor is arranged in the middle of the top of the machine base;

[0010] Further comprising an outer shell, the outer shell is installed on the outer ring of the stator, the inner ring of the stator is installed with a plurality of permanent magnets, the top of the rotor is installed with an insulation partition plate, the periphery of the rotor is provided with a winding group, and the rotor is provided with a fixing assembly for quickly fixing the winding group.

[0011] On the basis of the above technical scheme, the utility model further provides the following optional technical scheme:

[0012] In an optional scheme, the fixing assembly comprises sliding grooves and arc grooves, the sliding grooves are arranged on the outer ring of the rotor, the arc grooves are arranged on the inner ring of the rotor, the sliding grooves are slidably connected with sliding blocks, the sliding blocks are arranged on one side of the winding group, the arc grooves are slidably connected with arc blocks, the arc blocks are arranged on one side of the sliding blocks, the insulating partition plate is provided with a spacing plate at the bottom end, the spacing plate is provided with a positioning column at the bottom end, the first screw is arranged around the top of the insulating partition plate, and the threaded end of the first screw is arranged in the rotor.

[0013] In an optional scheme, the shell is provided with a heat dissipation assembly for dissipating heat of the motor.

[0014] In an optional scheme, the heat dissipation assembly comprises two fixing plates, the fixing plates are arranged on the outer ring of the shell, the heat dissipation ribs are arranged between the two fixing plates, the second screw is arranged around the top of the shell, the fixing plates are screw-connected to the second screw, and the threaded end of the second screw is screw-connected to the base.

[0015] In an optional scheme, the sliding grooves and the arc grooves are both provided with insulating paper.

[0016] In an optional scheme, the sliding block is provided with a clamping groove corresponding to the position of the positioning column.

[0017] In an optional scheme, the winding group, the sliding block and the arc block are all provided with rounded corners.

[0018] In an optional scheme, the surface of the winding group is coated with insulating paint.

[0019] Compared with the prior art, the utility model has the advantages that:

[0020] The sliding block, the arc block and the insulating partition plate are arranged, the winding group is convenient to install and disassemble, when a single winding group fails, the single winding group can be independently maintained or replaced, the heat dissipation ribs are arranged to directly contact the shell, the heat dissipation area is increased, the heat generated during the operation of the motor can be quickly dissipated, and the insulation effect of the rotor is improved through the insulating partition plate. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic view of the utility model.

[0022] Figure 2 It is a test local partial structural schematic view of the utility model.

[0023] Figure 3 It is a local partial structural schematic view of the utility model.

[0024] Wherein: 100, base; 200, stator; 300, rotor; 401, shell; 402, permanent magnet; 403, insulation partition; 404, winding group; 501, sliding groove; 502, arc-shaped groove; 503, sliding block; 504, arc-shaped block; 505, spacing plate; 506, positioning column; 507, first screw; 601, fixed plate; 602, heat dissipation rib; 603, second screw; 701, clamping groove. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples.

[0026] In one embodiment, as shown in Figures 1-3 A motor insulation structure, comprising: base 100, stator 200, rotor 300 and shell 401, the stator 200 is arranged at the top of the base 100, the rotor 300 is arranged at the middle of the top of the base 100, the shell 401 is installed at the outer ring of the stator 200, the inner ring of the stator 200 is installed with a plurality of permanent magnets 402, the top of the rotor 300 is installed with an insulation partition 403, the periphery of the rotor 300 is provided with a winding group 404, the rotor 300 is provided with a fixing assembly for quickly fixing the winding group 404, the insulation performance of the whole is improved by the insulation partition 403.

[0027] In one embodiment, as shown in Figure 2 and Figure 3As shown, the fixing assembly comprises a plurality of sliding grooves 501 and a plurality of arc grooves 502, the sliding grooves 501 are arranged on the outer ring of the rotor 300, the arc grooves 502 are arranged on the inner ring of the rotor 300, the inner part of the sliding groove 501 is slidably connected with a sliding block 503, the sliding block 503 is installed on one side of the winding set 404, the inner part of the arc groove 502 is slidably connected with an arc block 504, the arc block 504 is installed on one side of the sliding block 503, the bottom end of the insulating partition plate 403 is installed with a spacing plate 505, the bottom end of the spacing plate 505 is installed with a positioning column 506, the periphery of the top of the insulating partition plate 403 is installed with a first screw 507, the threaded end of the first screw 507 is installed in the inner part of the rotor 300; during installation, first, the sliding block 503 and the arc block 504 on the winding set 404 are aligned with the sliding groove 501 and the arc groove 502 respectively, then the winding set 404 is pressed downward, driving the sliding block 503 and the arc block 504 to move synchronously and be clamped into the grooves, then the insulating partition plate 403 is placed on the top of the rotor 300, and the spacing plate 505 and the positioning column 506 are aligned with the sliding block 503, then the first screw 507 is installed between the insulating partition plate 403 and the rotor 300, so that the winding set 404 can be fixed.

[0028] In one embodiment, as shown in Figure 1 The heat dissipation assembly comprises two fixing plates 601, the fixing plates 601 are sleeved on the outer wall of the shell 401, a heat dissipation rib 602 is installed between the two fixing plates 601, a second screw 603 is installed around the top of the shell 401, the fixing plate 601 is threadedly connected with the second screw 603, and the threaded end of the second screw 603 is threadedly connected with the base 100; by sleeving the fixing plate 601 and the heat dissipation rib 602 on the outer wall of the shell 401, and then fixing the second screw 603 on the shell 401, the fixing plate 601 and the base 100, the fixing plate 601 can be fixed, so that the heat dissipation rib 602 on the fixing plate 601 directly contacts the shell 401, and heat dissipation is facilitated.

[0029] In one embodiment, as shown in Figure 1 The inner parts of the sliding groove 501 and the arc groove 502 are placed with insulating paper; the occurrence of conduction is avoided.

[0030] In one embodiment, as shown in Figure 1 The sliding block 503 is provided with a clamping groove 701 corresponding in position to the positioning column 506; the positioning column 506 is clamped into the inner part of the clamping groove 701, so that positioning is facilitated.

[0031] In one embodiment, as shown in Figure 3As shown, the tips of the winding group 404, the sliding block 503, and the arc block 504 are all rounded; sharp corners and burrs cause electric field concentration, which can easily lead to discharge and breakdown.

[0032] In one embodiment, such as Figure 1 As shown, the surface of the winding assembly 404 is coated with insulating varnish, allowing the insulating varnish to fully penetrate into all parts of the winding, forming a dense insulating protective layer.

[0033] The above embodiment discloses a motor insulation structure. During installation, firstly, insulating varnish is applied to the surface of the winding assembly 404. Insulating paper is placed in the sliding groove 501 and the arc-shaped groove 502 to ensure effective insulation. Then, the sliding block 503 and the arc-shaped block 504 on the winding assembly 404 are aligned with the sliding groove 501 and the arc-shaped groove 502, respectively. Next, the winding assembly 404 is pressed downwards, causing the sliding block 503 and the arc-shaped block 504 to move synchronously and engage in the grooves. Finally, the insulating partition 403 is placed on top of the rotor 300, and the partition plate 505... Align the sliding block 503 with the positioning post 506, and then install the first screw 507 between the insulating partition 403 and the rotor 300 to fix the winding assembly 404. Then install the stator 200 and the outer shell 401. Subsequently, the fixing plate 601 and the heat dissipation fins 602 can be sleeved on the outer wall of the outer shell 401. Then fix the second screw 603 on the outer shell 401, the fixing plate 601 and the base 100 to fix the fixing plate 601, so that the heat dissipation fins 602 on the fixing plate 601 directly contact the outer shell 401 for heat dissipation.

[0034] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electric machine insulation structure, comprising: a machine base (100); a stator (200) arranged on the top of the machine base (100); a rotor (300) arranged in the middle of the top of the machine base (100); characterized in that it further comprises a shell (401) mounted on the outer ring of the stator (200), a plurality of permanent magnets (402) mounted on the inner ring of the stator (200), an insulation partition plate (403) mounted on the top of the rotor (300), a winding group (404) arranged around the rotor (300), and a fixing assembly arranged on the rotor (300) for quickly fixing the winding group (404).

2. An electrical machine insulation structure according to claim 1, wherein The fixing assembly comprises a plurality of sliding grooves (501) and a plurality of arc grooves (502), the sliding grooves (501) are arranged on the outer ring of the rotor (300), the arc grooves (502) are arranged on the inner ring of the rotor (300), a sliding block (503) is slidably connected inside the sliding groove (501), the sliding block (503) is mounted on one side of the winding group (404), an arc block (504) is slidably connected inside the arc groove (502), the arc block (504) is mounted on one side of the sliding block (503), a spacing plate (505) is mounted at the bottom end of the insulation partition plate (403), a positioning column (506) is mounted at the bottom end of the spacing plate (505), a first screw (507) is mounted around the top of the insulation partition plate (403), and the threaded end of the first screw (507) is mounted inside the rotor (300).

3. An electrical machine insulation structure according to claim 1, wherein The shell (401) is provided with a heat dissipation assembly for heat dissipation of the electric machine.

4. An electrical machine insulation structure according to claim 3, wherein The heat dissipation assembly comprises two fixing plates (601) sleeved on the outer ring of the shell (401), a heat dissipation rib (602) mounted between the two fixing plates (601), a second screw (603) mounted around the top of the shell (401), the fixing plates (601) threadedly connected to the second screw (603), and the threaded end of the second screw (603) threadedly connected to the machine base (100).

5. An electrical machine insulation structure according to claim 2, wherein The interiors of the sliding grooves (501) and the arc grooves (502) are both placed with insulation paper.

6. An electrical machine insulation structure according to claim 2, wherein The sliding block (503) is provided with a clamping groove (701) corresponding to the position of the positioning column (506).

7. An electrical machine insulation structure according to claim 2, wherein The tips of the winding group (404), the sliding block (503) and the arc block (504) are all rounded.

8. An electrical machine insulation structure according to claim 1, wherein The surface of the winding group (404) is coated with insulation paint.

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