Pole-crossing connection structure of high-speed multi-pole and non-salient pole synchronous motor

Abstract

The invention relates to a high-speed multi-pole non-salient pole synchronous motor cross-pole connection structure, which is characterized in that a rotor coil (2) and a rotor outgoing line (3) are arranged on a rotating shaft (1), a lead groove (14) and a lead screw through hole (13) with threads are processed on the rotating shaft, and the rotor outgoing line (4) is connected from the rotor coil (2) and the opposite rotor coil (3); and the lead screw is connected with an insulated rear lead screw (7) mounted in the lead screw through hole (13) through the lead groove (14). According to the invention, the symmetry and structural strength of the motor are effectively improved, the motor can be normally applied under the condition of extremely high rotating speed, vibration caused by asymmetry of a motor cross-pole connecting structure under the condition of high rotating speed can be effectively solved, and the service life of the motor is prolonged. Problems, such as poor contact and complex assembly, existing in a traditional connection mode can be effectively solved, and the performance and reliability of the motor are improved.

Description

Technical Field

[0001] The invention relates to a cross-pole connection structure of a high-speed multi-pole hidden-pole synchronous motor. Background Art

[0002] In the field of motor manufacturing technology, the cross-pole connection structure of high-speed multi-pole hidden pole synchronous motors is an important issue. In the traditional cross-pole connection method of high-speed multi-pole hidden pole motors, the wires are crawled on the shaft. This cross-pole connection structure will directly affect the vibration of the motor and the maximum speed performance of the motor. When the motor speed is high and the vibration is large, it may cause poor contact and even damage to the motor. When the damage is serious, the parts that fix the crawling wires may splash. The traditional cross-pole connection method of high-speed multi-pole hidden pole motors greatly limits the increase in motor speed and greatly affects the stability of the motor. Therefore, how to realize the cross-pole connection structure of high-speed multi-pole hidden pole synchronous motors and improve the stability of the motor rotor and the service life of the motor is a problem that has been studied in the field of motor manufacturing technology. Summary of the invention

[0003] The purpose of the present invention is to realize a high-speed multi-pole hidden-pole synchronous motor cross-pole connection structure.

[0004] The technical scheme of the present invention is as follows: the rotor coil (2), the opposite rotor coil (3), the rotor lead wire (4), the slot wedge (5), the first insulating pad (6), the second insulating pad (15), the insulating rear lead screw (7), the threaded sleeve (8), the insulating sleeve (9), the connecting screw (10), the washer (11), and the limit bolt (12) are composed of the rotor coil (2) and the rotor lead wire (3) are installed on the rotating shaft (1), the rotating shaft is processed with a lead wire groove (14) and a threaded lead screw through hole (13), and the rotor lead wire (4) is connected to the insulating rear lead screw (7) installed in the lead screw through hole (13) after being connected from the rotor coil (2) and the opposite rotor coil (3).

[0005] 2. A high-speed multi-pole hidden-pole synchronous motor cross-pole connection structure according to 1, characterized in that: after the insulating rear lead screw (7) is inserted into the lead screw through hole (13), the insulating sleeve (9) is inserted into the insulating rear lead screw (7) from both ends of the lead screw through hole (13) to fix its position, and then the threaded sleeve (8) is screwed in to press the insulating sleeve (9).

[0006] 3. A high-speed multi-pole hidden-pole synchronous motor cross-pole connection structure according to 1, characterized in that: the rotor lead wire (3) is threadedly connected to the insulating rear lead screw (7) using a connecting screw (10) and a washer (11), and the rotor lead wire (3) is wrapped with a first insulating spacer (6) and a second insulating spacer (15); the slot wedge (5) is installed in the lead slot (14) and presses the rotor lead wire (4), the first insulating spacer (6), and the second insulating spacer (15), and the slot wedge (5) is fixed by a limit bolt (12).

[0007] The working principle and advantages of the present invention are as follows:

[0008] 1. The cross-pole connection structure of the high-speed multi-pole hidden-pole synchronous motor designed by the present invention adopts a connection method in which a lead screw through hole (13) is punched on the shaft and a lead screw (7) is assembled. In this method, the conductive rod has a higher structural strength than the lead in the traditional creeping wire connection method, and the rotating shaft has good symmetry, so that the center of mass and the rotation center coincide with each other. It can be used normally under extremely high speed conditions, and can effectively solve the vibration caused by the asymmetry of the motor cross-pole connection structure under high speed conditions and improve the service life of the motor.

[0009] 2. The high-speed multi-pole hidden-pole synchronous motor cross-pole connection structure of the present invention has good symmetry because it adopts a connection method in which a lead screw through hole (13) is drilled on the shaft to assemble the lead screw (7), and can effectively reduce the unilateral magnetic pull force fluctuation caused by the air gap change, thereby reducing the vibration of the motor caused by the unilateral magnetic pull force fluctuation.

[0010] 3. The high-speed multi-pole hidden-pole synchronous motor cross-pole connection structure of the present invention is a method of threading the rotor lead wire (3) and the insulated rear lead screw (7) with a connecting screw (10) and a washer (11). Compared with the traditional climbing wire method, the assembly process can be more standardized and the connection is more secure. The above design and assembly of the present invention can effectively solve many problems existing in the traditional connection method, such as poor contact, complex assembly and insufficient lead connection strength, and improve the performance and reliability of the motor.

[0011] 4. The cross-pole connection structure of the high-speed multi-pole hidden-pole synchronous motor of the present invention can ensure the reliable connection between the rotor coil and the rotor lead wire, thereby improving the stability and service life of the motor. Therefore, the present invention has broad application prospects and market demand in the fields of motor engineering, power electronics technology, and mechanical design. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A side sectional view of the present invention

[0013] Figure 2 This is a cross-sectional view of the rotating shaft B of the present invention

[0014] Figure 3 A sectional view of the present invention

[0015] Figure 4 A top view of the present invention DETAILED DESCRIPTION

[0016] like Figure 1 The cross-pole connection structure of a high-speed multi-pole hidden-pole synchronous motor shown in the figure is characterized by: comprising a rotating shaft 1, a rotor coil 2, an opposing rotor coil 3, a rotor lead wire 4, a slot wedge 5, a first insulating spacer 6, a second insulating spacer 15, an insulated rear lead screw 7, a threaded sleeve 8, an insulating sleeve 9, a connecting screw 10, a washer 11, and a limit bolt 12. The rotor coil 2 and the rotor lead wire 3 are installed on the rotating shaft 1, and a lead wire groove 14 and a lead screw through hole 13 with threads are processed on the rotating shaft. The rotor lead wire 4 is connected from the rotor coil 2 and the opposing rotor coil 3, and is connected to the insulated rear lead screw 7 installed in the lead screw through hole 13 through the lead wire groove 14;

[0017] like Figure 2 , Figure 4 As shown, the rotating shaft is processed with a lead wire groove 14 and a lead wire screw through hole 13 with threads;

[0018] like Figure 1 As shown, the rotor lead wire 4 is connected from the rotor coil 2 and the opposite rotor coil 3, and is connected to the insulating rear lead screw 7 installed in the lead screw through hole 13 through the lead groove 14; after the insulating rear lead screw 7 is inserted into the lead screw through hole 13, the insulating sleeve 9 is inserted into the insulating rear lead screw 7 from both ends of the lead screw through hole 13 to fix its position, and then the threaded sleeve 8 is screwed in to press the insulating sleeve 9; the rotor lead wire 3 is threadedly connected to the insulating rear lead screw 7 by a connecting screw 10 and a washer 11, and the rotor lead wire 3 is wrapped with a first insulating spacer 6 and a second insulating spacer 15;

[0019] like Figure 3 As shown, the slot wedge 5 is assembled in the lead slot 14 to press the rotor lead wire 4, the first insulating spacer 6, and the second insulating spacer 15, and the position of the slot wedge 5 is fixed by the limiting bolt 12.

Claims

1. A high-speed multi-pole hidden-pole synchronous motor cross-pole connection structure, characterized by: The invention comprises a rotating shaft (1), a rotor coil (2), an opposing rotor coil (3), a rotor lead wire (4), a slot wedge (5), a first insulating pad (6), a second insulating pad (15), an insulating rear lead screw (7), a threaded sleeve (8), an insulating sleeve (9), a connecting screw (10), a washer (11), and a limiting bolt (12). The rotor coil (2) and the rotor lead wire (3) are mounted on the rotating shaft (1). A lead wire groove (14) and a threaded lead screw through hole (13) are processed on the rotating shaft. The rotor lead wire (4) is connected from the rotor coil (2) and the opposing rotor coil (3) through the lead wire groove (14) and is connected to the insulating rear lead screw (7) installed in the lead screw through hole (13).

2. A high-speed multi-pole hidden-pole synchronous motor cross-pole connection structure according to claim 1, characterized in that: After the insulating rear lead screw (7) is inserted into the lead screw through hole (13), the insulating sleeve (9) is inserted into the insulating rear lead screw (7) from both ends of the lead screw through hole (13) to fix its position, and then the threaded sleeve (8) is screwed in to press the insulating sleeve (9).

3. The high-speed multi-pole hidden-pole synchronous motor cross-pole connection structure according to claim 1 is characterized by: The rotor lead wire (3) is threadedly connected to the insulating rear lead screw (7) by means of a connecting screw (10) and a washer (11); the rotor lead wire (3) is wrapped with a first insulating pad (6) and a second insulating pad (15); a slot wedge (5) is fitted in the lead wire slot (14) and presses the rotor lead wire (4), the first insulating pad (6) and the second insulating pad (15); a limiting bolt (12) is used to fix the slot wedge (5).

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