Used for anti-swing plate structure of aviation high-speed motor and its assembly tooling and shaping tooling

Abstract

The utility model discloses an anti-swing sheet structure for aviation high-speed motors, and relates to the technical field of aviation high-speed motors. It includes a main rotor triangle block, a main rotor core, and a main rotor winding coil; the main rotor triangle block is located in the main rotor core, and the main rotor triangle block includes a hollow triangle block and two support blocks; the pole shoe of the main rotor core is supported on a step between the hollow triangle block and the support block, and the main rotor winding coil is located between the side wall of the hollow triangle block and the main rotor core. The main rotor triangle block of the utility model is used in conjunction with a damping strip. When the main rotor core punching sheet breaks, because the distance B from the broken part of the pole shoe of the main rotor core to the support block is smaller than the distance A from the inner wall of the main rotor core to the hollow triangle block, the broken punching sheet will also be locked in the current position and will not fall out, thereby improving the reliability of the rotor. The utility model also relates to assembly tooling and shaping tooling for this anti-swing sheet structure for aviation high-speed motors.

Description

Technical Field

[0001] The utility model relates to an aviation high-speed motor, more specifically to an anti-swinging sheet structure for the aviation high-speed motor and an assembly tool and a shaping tool. Background Art

[0002] High-speed motors have high rotation speeds, high power density, and their geometric dimensions and weight are much smaller than those of medium- and low-speed motors with the same output power. They are widely used in the aviation industry.

[0003] High-speed motors have a main feature, namely, the high-speed rotation of the rotor, with a speed of up to tens of thousands of revolutions per minute and a circumferential speed of more than 200m / s; a copper excitation coil is installed on the rotor core, which exerts centrifugal pressure on the rotor pole shoes at high speeds. Under the dual effects of its own centrifugal force and the centrifugal pressure of the excitation coil, the rotor punching has the phenomenon of "flinging off" due to insufficient strength, which leads to motor failure; the simplest solution is to add a thin-walled sheath, that is, to add a layer of high-strength thin-walled sheath to the outer circle of the rotor core to protect the rotor core, but considering the motor air gap, heat dissipation, internal and external characteristics, volume and weight and other factors, it may not be possible to use a thin-walled sheath. Therefore, it is necessary to propose a non-thin-walled sheath anti-"flinging off" structure.

[0004] Therefore, it is necessary to develop an anti-swing plate structure, assembly tooling and shaping tooling for aviation high-speed motors. Utility Model Content

[0005] The first purpose of the utility model is to overcome the deficiencies of the above-mentioned background technology and to provide an anti-swing plate structure for aviation high-speed motors.

[0006] The second purpose of the utility model is to overcome the shortcomings of the above-mentioned background technology and provide an assembly tool for the anti-swing plate structure of the aviation high-speed motor.

[0007] The second purpose of the utility model is to provide an assembly tool for the anti-swing plate structure of an aviation high-speed motor.

[0008] The third purpose of the utility model is to provide a shaping tool for assembling the anti-swing plate structure of an aviation high-speed motor.

[0009] In order to achieve the above first purpose, the technical solution of the utility model is: for an anti-swing sheet structure of an aviation high-speed motor, characterized in that it includes a main rotor triangular block, a main rotor core and a main rotor winding coil; the main rotor triangular block is located in the main rotor core, and the main rotor triangular block includes a hollow triangular block and two support blocks symmetrically arranged on the top of the hollow triangular block;

[0010] The shaft shoulder at the left end of the main rotor triangular block engages with the boss of the first main rotor protection ring, and the shaft shoulder at the right end of the main rotor triangular block engages with the boss of the second main rotor protection ring;

[0011] The pole shoes of the main rotor core are supported on the steps between the hollow triangle block and the support block, the main rotor winding coil is located between the side wall of the hollow triangle block and the main rotor core, and the hollow triangle block supports the main rotor winding coil.

[0012] In the above technical solution, a wedge-shaped block is arranged between the main rotor winding coil and the bottom of the hollow triangle block and the main rotor core.

[0013] In the above technical solution, the main rotor winding coil is provided with an insulating layer.

[0014] In the above technical solution, a damping strip is arranged above the intersection of the pole shoe and the pole body of the main rotor core, and the distance B from the intersection of the pole shoe and the pole body of the main rotor core to the support block is smaller than the distance A from the inner wall of the main rotor core to the support block.

[0015] In the above technical solution, the gap between the bottom of the pole shoe of the main rotor core and the top of the hollow triangle block is ≥0.2 mm.

[0016] In order to achieve the above-mentioned second purpose, the technical solution of the utility model is: an assembly tool for the anti-swinging plate structure of an aviation high-speed motor, characterized in that it includes a base and a thin-walled sleeve, and the base is evenly provided with bosses matching the bottom structure of the main rotor core; the thin-walled sleeve is pressed onto the main rotor core by an interference fit.

[0017] In the above technical solution, the thin-walled sheath is formed by two thin-walled clamps fixed by bolts.

[0018] In the above technical solution, the bottom of the thin-walled sheath is positioned by a cylindrical pin on the base.

[0019] In order to achieve the above-mentioned third purpose, the technical solution of the utility model is: a shaping tool for the assembly tool of the anti-swinging piece structure of the aviation high-speed motor, characterized in that: it includes a triangular shaping block, a T-shaped shaping block and a punching plate, and the triangular shaping block has the same structure as the hollow triangular block; an air avoidance groove is arranged at the end of the punching plate; a plurality of waist-shaped grooves are spaced apart on the thin-walled sheath, and the waist-shaped grooves have two rows.

[0020] In the above technical solution, two waist-shaped grooves are arranged on the top of the triangular shaping block, and the width of the waist-shaped grooves is consistent with the width of the punching plate; the T-shaped shaping block is a T-shaped structure, and the end of the T-shaped shaping block is concave.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] 1) Since the main rotor triangular block of the utility model is used in conjunction with the damping strip, when the main rotor core punching sheet is broken, because the distance B from the broken part of the pole shoe of the main rotor core to the support block is smaller than the distance A from the inner wall of the main rotor core to the hollow triangular block, the broken punching sheet will also be locked in the current position and will not fall out, thereby improving the reliability of the rotor.

[0023] 2) The main rotor triangular block and the main rotor protection ring of the utility model engage with each other, which can reduce the force of the main rotor winding coil on the main rotor core pole shoe and reduce the risk of "throwing off".

[0024] 3) The utility model has an anti-swing plate design in terms of structure, avoids the use of a sheath, reduces the weight of the high-speed rotor, reduces the air gap between the stator and rotor, and improves the overload capacity. Even if a sheath is used, a thin-walled sheath can be used.

[0025] 4) The assembly tooling of the utility model can reduce the risk of damage to the main rotor core pole shoes due to factors such as processing and assembly.

[0026] 5) In order to facilitate the installation of the main rotor triangular block, the utility model designs a shaping tool; a waist-shaped groove is provided on the wall surface of the thin-walled sheath, so that the punching plate can pass through the thin-walled sheath to exert impact force on the triangular shaping block; the triangular shaping block is used in conjunction with the punching plate, and the triangular shaping block has the same triangular structure as the bottom of the main rotor triangular block, and is used to shape the main rotor winding coil; the width of the waist-shaped groove is consistent with the width of the punching plate, which can ensure that when the punching plate is struck, the punching plate will not fall out and damage the rotor winding coil or the main rotor core; the T-shaped shaping block is used in the area where the triangular shaping block cannot act, and the end of the T-shaped shaping block is designed to be a concave structure to avoid damage to the edge of the pole shoe of the main rotor core; the T-shaped structure of the T-shaped shaping block can avoid the unslotted area on the thin-walled sheath to meet the full-area shaping requirements for the main rotor winding coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the anti-swinging plate structure of the utility model.

[0028] Figure 2 for Figure 1 sectional view of .

[0029] Figure 3 for Figure 1 Enlarged view of point Ⅰ in the middle.

[0030] Figure 4 for Figure 2 Enlarged view of point II in the middle.

[0031] Figure 5 It is a structural schematic diagram of the assembly tooling of the utility model.

[0032] Figure 6 This is a schematic diagram of the structure when assembling the main rotor triangle block.

[0033] Figure 7 for Figure 6 Schematic diagram of the structure in the C direction.

[0034] Figure 8 It is a structural diagram of the triangular shaping block.

[0035] Fig. 9 for Figure 8 Schematic diagram of the structure in the D direction.

[0036] Fig.10 It is a structural schematic diagram of a T-shaped shaping block.

[0037] Fig.11 for Fig.10 Schematic diagram of the structure in the E direction.

[0038] Fig.12 It is the structural diagram of punching plate.

[0039] Fig.13 Schematic diagram of the structure of the thin-walled sheath.

[0040] Among them, 1-main rotor triangular block, 11-hollow triangular block, 12-support block, 13-shaft shoulder, 14-wedge block, 2-main rotor core, 21-first main rotor guard ring, 22-second main rotor guard ring, 23-damping strip, 3-main rotor winding coil, 31-insulating layer, 4-base, 41-boss, 42-cylindrical pin, 5-thin-walled sleeve, 51-waist-shaped groove, 52-thin-walled clamp, 53-bolt, 6-triangular shaping block, 61-waist-shaped sink groove, 7-T-shaped shaping block, 71-inner concave, 8-punch plate, 81-avoidance groove. DETAILED DESCRIPTION

[0041] The following is a detailed description of the implementation of the utility model in conjunction with the accompanying drawings, but they do not constitute a limitation of the utility model and are only used as examples. At the same time, the advantages of the utility model will become clearer and easier to understand through the description.

[0042] Referring to the attached drawings, it can be seen that the anti-swing plate structure for aviation high-speed motors is characterized in that it includes a main rotor triangular block 1, a main rotor core 2 and a main rotor winding coil 3; the main rotor triangular block 1 is located in the main rotor core 2, and the cross-section of the main rotor triangular block 1 is designed to be a double triangular structure. The main rotor triangular block 1 includes a hollow triangular block 11 and two support blocks 12 symmetrically arranged on the top of the hollow triangular block 11; reinforcing ribs 121 are arranged between the support blocks 12, and there are three reinforcing ribs 121; the support block 12 is a long, thin-walled part, and the reinforcing ribs 121 can effectively improve the rigidity of the support block 12.

[0043] The shaft shoulder 13 at the left end of the main rotor triangular block 1 engages with the boss of the first main rotor protection ring 21, and the shaft shoulder 13 at the right end of the main rotor triangular block 1 engages with the boss of the second main rotor protection ring 22;

[0044] The shoulders 13 on both sides of the main rotor triangular block 1 are engaged with the main rotor guard ring, which is an interference engagement method, that is, through interference, the first main rotor guard ring 21 and the second main rotor guard ring 22 apply a centripetal preload to the main rotor triangular block 1 to offset a part of the centrifugal force when the rotor rotates at high speed; when the rotor rotates at high speed, the centrifugal force of the main rotor winding coil 3 and the main rotor triangular block 1 itself can be transferred to the first main rotor guard ring 21 and the second main rotor guard ring 22 (using high-strength alloy steel) through the shoulders 13 on both sides of the main rotor triangular block 1, thereby reducing the pressure applied to the pole shoes of the main rotor core 2, thereby reducing the risk of punching sheet breakage; the main rotor triangular block 1 is designed as an upper and lower two-part structure, because it is at an angle of 30° (12 poles correspond to 30°, 8 poles correspond to 45°, and so on), it can also apply a certain centripetal force to the pole shoes and windings to offset a part of the centrifugal force when the rotor rotates at high speed.

[0045] In simple terms, this design is mainly to balance the stress of each part when the rotor assembly rotates at high speed. The material yield strength of the first main rotor guard ring 21 and the second main rotor guard ring 22 is much greater than that of the punching sheet material, so the force should be transferred to the main rotor guard ring as much as possible through structural design.

[0046] The pole shoes of the main rotor core 2 are supported on the steps between the hollow triangle block 11 and the support block 12 , the main rotor winding coil 3 is located between the side wall of the hollow triangle block 11 and the main rotor core 2 , and the hollow triangle block 11 supports the main rotor winding coil 3 .

[0047] A wedge block 14 is arranged between the main rotor winding coil 3 and the bottom of the hollow triangle block 11 and the main rotor core 2 .

[0048] The main rotor winding coil 3 is provided with an insulating layer 31 .

[0049] A damping strip 23 is provided above the intersection of the pole shoe and the pole body of the main rotor core 2 , and the distance B from the intersection of the pole shoe and the pole body of the main rotor core 2 to the support block 12 is smaller than the distance A from the inner wall of the main rotor core 2 to the support block 12 .

[0050] The main rotor punching sheets are formed by stamping or wire cutting or laser cutting, and the stacking sheets form the main rotor core 2. Due to processing errors, assembly and other factors, the inner flatness of the pole shoes of the main rotor core 2 is poor, showing an uneven phenomenon. When the main rotor triangle block 1 is assembled, the main rotor triangle block 1 will exert pressure on the protruding punching sheets in the main rotor core 2, thereby damaging the pole shoe root of the main rotor core 2 and reducing its structural strength. The inner wall of the pole shoe of the main rotor core 2 and the top of the triangular structure at the bottom of the main rotor triangle block 1 are designed to have a gap of ≥0.2mm; the gap between the bottom of the pole shoe of the main rotor core 2 and the top of the hollow triangle block 11 is ≥0.2mm to compensate for errors caused by processing and assembly.

[0051] The thin-walled sheath 5 is formed by two thin-walled clamps 52 fixed by bolts 53; it is easy to assemble and disassemble; the functions of the thin-walled sheath 5 are: 1) to protect the pole shoes and prevent the assemblers from applying inappropriate stress to the rotor pole shoes due to improper operation during the assembly process, which may cause hidden cracks at the root of the pole shoes (the intersection of the pole shoes and the pole body). The hidden cracks are not easy to detect in the early stage of assembly and are not convenient to inspect; 2) to apply centripetal preload force to the main rotor triangle block 1 (from the current actual test results, preload force is the key to realizing anti-swinging plate); 3) to ensure that the gap is ≥0.2mm.

[0052] The assembly tool for the anti-swing plate structure of the aviation high-speed motor is characterized by: comprising a base 4 and a thin-walled sheath 5, the base 4 is evenly provided with bosses 41 matching the bottom structure of the main rotor core 2; the thin-walled sheath 5 is pressed onto the main rotor core 2 by interference fit. Twelve bosses are evenly designed on the base 4 to match the structure on the main rotor core 2. Since the main rotor core 2 is completely symmetrical in structure, it can be considered that the position of the main rotor core 2 installed on the base 4 is fixed;

[0053] The thin-walled sheath 5 completely covers the main rotor core 2, thereby preventing the pole shoe roots of the main rotor core 2 from being damaged due to human factors during assembly.

[0054] The bottom of the thin-walled jacket 5 is positioned by a cylindrical pin 42 on the base 4 to ensure that the waist-shaped groove 51 opened on the wall of the thin-walled jacket 5 is aligned with the gap between the pole shoes on the main rotor core 2.

[0055] The shaping tool used for the assembly tool of the anti-swinging piece structure of the aviation high-speed motor is characterized by: comprising a triangular shaping block 6, a T-shaped shaping block 7 and a punching plate 8, wherein the triangular shaping block 6 has the same structure as the hollow triangular block 11; an air avoidance groove 81 is arranged at the end of the punching plate 8; a plurality of waist-shaped grooves 51 are spaced apart on the thin-walled sheath 5, and the waist-shaped grooves 51 have two rows.

[0056] The top of the triangular shaping block 6 is provided with two waist-shaped recesses 61 , and the width of the waist-shaped recesses 61 is consistent with the width of the punching plate 8 ; the T-shaped shaping block 7 is a T-shaped structure, and the end of the T-shaped shaping block 7 is concave 71 .

[0057] In actual use, when the main rotor triangular block 1 is assembled, the inner wall of the thin-walled sheath 5 has a limiting effect on the main rotor triangular block 1 .

[0058] First install the main rotor winding coil 3, then install the thin-walled sleeve 5, after shaping the main rotor winding coil 3 through the triangular shaping block 6, T-shaped shaping block 7, and punching plate 8, install the main rotor triangular block 1; then install the first main rotor protection ring 21 and the second main rotor protection ring 22, the shoulder 13 of the main rotor triangular block 1 and the boss structure of the first main rotor protection ring 21 and the second main rotor protection ring 22 are engaged with each other to fix the main rotor triangular block 1; finally remove the thin-walled sleeve 5.

[0059] The main rotor triangle block 1 and the main rotor protection ring adopt an interlocking design, which transfers the force of the main rotor triangle block 4 and the main rotor coil winding 3 on the pole shoes of the main rotor core 2 to the main rotor protection ring.

[0060] Other parts not described belong to the prior art.

Claims

1. Anti-swing plate structure for aviation high-speed motors, characterized by: The invention comprises a main rotor triangular block (1), a main rotor core (2) and a main rotor winding coil (3); the main rotor triangular block (1) is located in the main rotor core (2); the main rotor triangular block (1) comprises a hollow triangular block (11) and two support blocks (12) symmetrically arranged on the top of the hollow triangular block (11); The shaft shoulder (13) at the left end of the main rotor triangular block (1) engages with the boss of the first main rotor protection ring (21), and the shaft shoulder (13) at the right end of the main rotor triangular block (1) engages with the boss of the second main rotor protection ring (22); The pole shoes of the main rotor core (2) are supported on a step between the hollow triangular block (11) and the support block (12); the main rotor winding coil (3) is located between the side wall of the hollow triangular block (11) and the main rotor core (2); and the hollow triangular block (11) supports the main rotor winding coil (3).

2. The anti-swing plate structure for aviation high-speed motor according to claim 1 is characterized in that: A wedge-shaped block (14) is arranged between the main rotor winding coil (3) and the bottom of the hollow triangle block (11) and the main rotor iron core (2).

3. The anti-swing plate structure for aviation high-speed motor according to claim 2 is characterized in that: The main rotor winding coil (3) is provided with an insulating layer (31).

4. The anti-swing plate structure for aviation high-speed motor according to claim 3 is characterized in that: A damping strip (23) is provided above the intersection of the pole shoe and the pole body of the main rotor core (2), and the distance B from the intersection of the pole shoe and the pole body of the main rotor core (2) to the support block (12) is smaller than the distance A from the inner wall of the main rotor core (2) to the support block (12).

5. The anti-swing plate structure for aviation high-speed motor according to claim 4 is characterized in that: The gap between the bottom of the pole shoe of the main rotor core (2) and the top of the hollow triangle block (11) is ≥0.2 mm.

6. Assembly tooling for the anti-swing plate structure of aviation high-speed motors, characterized by: It comprises a base (4) and a thin-walled sleeve (5); the base (4) is evenly provided with bosses (41) matching the bottom structure of the main rotor core (2); the thin-walled sleeve (5) is press-fitted onto the main rotor core (2) in the form of an interference fit.

7. The assembly tool for the anti-swing plate structure of the aviation high-speed motor according to claim 6 is characterized in that: The thin-walled sheath (5) is formed by two thin-walled clamps (52) fixed by bolts (53).

8. The assembly tool for the anti-swing plate structure of the aviation high-speed motor according to claim 7 is characterized in that: The bottom of the thin-walled sheath (5) is positioned by a cylindrical pin (42) on the base (4).

9. The shaping tool used for the assembly tool of the anti-swing plate structure of the aviation high-speed motor is characterized by: The invention comprises a triangular shaping block (6), a T-shaped shaping block (7) and a punching plate (8), wherein the triangular shaping block (6) has the same structure as the hollow triangular block (11); an air avoidance groove (81) is arranged at the end of the punching plate (8); and a plurality of waist-shaped grooves (51) are arranged at intervals on the thin-walled protective sleeve (5), and the waist-shaped grooves (51) are arranged in two rows.

10. The shaping tool for the assembly tool of the anti-swing plate structure of the aviation high-speed motor according to claim 9, characterized in that: The top of the triangular shaping block (6) is provided with two waist-shaped recessed grooves (61), and the width of the waist-shaped recessed grooves (61) is consistent with the width of the punching plate (8); the T-shaped shaping block (7) is a T-shaped structure, and the end of the T-shaped shaping block (7) is concave (71).

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