Wiring structure of wound rotor of large-scale synchronous motor

Abstract

The invention relates to a large-scale synchronous motor wound rotor wiring structure, and relates to the technical field of motor rotor wiring, the large-scale synchronous motor wound rotor wiring structure comprises a motor rotor main body, the outer side of the motor rotor main body is provided with a plurality of groups of damping rings, the inner center position of the motor rotor main body is provided with a rotor iron core, and the rotor iron core is provided with a plurality of groups of rotor magnetic poles. The rotor iron core is connected with a pole coil outgoing line wiring device and a pole coil wiring device, a coil connecting sheet is connected between the rotor winding and the pole coil outgoing line wiring device, and a damping ring wiring device is connected between two adjacent groups of damping rings; according to the invention, a traditional wiring structure of hard copper bar welding is changed, wiring efficiency and maintenance convenience are greatly improved, flexible connection is realized by adopting the inter-electrode connection device, the risk of breakage in welding connection is eliminated, and the condition that the wiring position of the rotor is broken in rotation is avoided through the flexible connection structure of the outgoing line.

Description

Technical Field

[0001] The present application relates to the technical field of motor rotor connection, and in particular to a large synchronous motor winding rotor connection structure. Background Art

[0002] Traditional winding rotor wiring mostly uses hard copper busbar welding. Although this connection method has high conductivity and low cost, it is easy to cause solder joint fatigue or even breakage due to factors such as vibration and temperature changes during long-term operation, which in turn causes problems such as failure and shutdown.

[0003] In order to improve the safety and stability of motors, the industry generally adopts the following technical means to improve the wiring structure: First, by increasing the number of solder joints, trying to prolong the service life by dispersing stress, but this method increases production costs and is difficult to fundamentally solve the problem; second, using silver-based alloys for brazing, although it improves welding strength and corrosion resistance, but the cost is high, and the risk of short circuit cannot be completely avoided; third, by introducing additional reinforcement measures, such as using metal clamps to fix copper bars, to reduce the impact of vibration, but this increases the complexity of the system and may also affect the heat dissipation effect;

[0004] Although the above measures can alleviate the problems of welded joints to a certain extent, they are still based on the improvement of welding technology in essence, so they still face a series of challenges in practical application, including but not limited to high cost, difficult maintenance, low safety factor, etc. In addition, the thermal stress generated during welding may also cause the performance of materials to deteriorate, thereby reducing the working efficiency and life of the entire motor.

[0005] Therefore, in view of the above-mentioned related technical problems, a large synchronous motor winding rotor connection structure is proposed. Summary of the invention

[0006] In order to improve the above problems, the present application provides a large synchronous motor winding rotor connection structure.

[0007] The present application provides a large synchronous motor winding rotor connection structure, which adopts the following technical solution:

[0008] A large synchronous motor winding rotor connection structure, comprising a motor rotor body, a plurality of damping rings are arranged on the outside of the motor rotor body, a rotor core is arranged at the center of the motor rotor body, and a rotor shaft is connected inside the rotor core, a plurality of rotor poles are arranged on the rotor core, and the plurality of rotor poles are arranged in a ring shape with the rotor shaft as the axis, and a rotor winding is wound around the rotor poles;

[0009] Among them, the rotor core is connected with a pole coil lead-out wire wiring device and a pole coil wiring device, and a coil connecting plate is connected between the rotor winding and the pole coil lead-out wire wiring device, a lead-out cable is connected between the pole coil lead-out wire wiring device and the rotor shaft, and a damping ring wiring device is connected between two adjacent groups of damping rings; the motor rotor body is connected to a large motor, and rotates with the motor stator through the rotor core and the rotor poles, and the motor rotor body drives the rotor shaft to rotate during the rotation process, and the rotor winding is wound and connected to each rotor pole through the damping ring wiring device and the pole coil wiring device, and the rotor winding is connected to the lead-out cable and the brush slip ring on the rotor shaft through the pole coil lead-out wire wiring device, and the rotor winding uses the damping ring to make the motor run more stably.

[0010] Preferably, a cable clamp is provided at the connection between the lead-out cable and the rotor shaft, the lead-out cable and the coil connecting plate are connected in a connecting wiring device, the pole coil lead-out wiring device includes a connecting wiring device and a wiring fixing device, and the connecting wiring device is connected to the rotor core by bolts, and one end of the lead-out cable is connected to the connecting wiring device by a wiring fixing device.

[0011] By adopting the above technical solution, the pole coil lead-out wiring device can be quickly connected to the rotor core by bolts, the wiring fixture is a flexible connection device, and the lead-out cable is connected to the connection wiring device through the wiring fixture, and the connection position and direction of the lead-out cable are limited and fixed by the cable clamp.

[0012] Preferably, a connecting gasket is provided between the wiring fixture and the connecting wiring device, and a telescopic spring is connected between the connecting gasket and the connecting wiring device and between the connecting gasket and the wiring fixture. A clamping bolt is connected to one side of the wiring fixture, and one end of the clamping bolt clamps the lead-out cable in the wiring fixture.

[0013] By adopting the above technical solution, the connection wiring device and the wiring fixing device are flexibly connected through the connecting gasket, and the connection gasket and the connection wiring device as well as the connection gasket and the wiring fixing device are telescopically extended and folded and rotated at a certain angle through telescopic springs, and the lead-out cable is clamped and fixed in the wiring fixing device by the clamping bolt.

[0014] Preferably, the rotor poles at both ends of the rotor core located on the same vertical line are connected by cable winding, the damping ring is short-circuited and connected with a damping rod, a pole pressure plate is connected between the damping ring and the motor rotor body, and a pole punching sheet is connected between the two groups of pole pressure plates located on the same straight line.

[0015] By adopting the above technical solution, the damping rod is used to eliminate the vibration between the rotor windings, two groups of adjacent damping rings are connected by the damping connecting plates on the damping ring wiring device, and the damping ring wiring device is connected to the rotor core through the damping connecting plates, the pole punchings are used to generate magnetic fields, thereby driving the motor to operate normally, and the pole pressure plates are used to press the pole punchings and the rotor windings.

[0016] Preferably, the damping ring wiring device includes a magnetic pole installation positioning auxiliary device and a damping connecting plate, and the cross-sectional shape of the damping connecting plate is an inverted equilateral trapezoid with an open upper end, the damping connecting plate is connected to the motor rotor body by bolts, and the damping connecting plate is connected to the damping ring by bolts.

[0017] By adopting the above technical solution, the pole installation positioning auxiliary device is used to assist the installation and connection of the damping ring wiring device, the damping connecting plate is used to realize the quick connection between the damping ring wiring device and the rotor core through bolts, and the damping connecting plate is used to realize the quick connection with the damping ring through bolts.

[0018] Preferably, the pole installation and positioning auxiliary device includes a pole support block bolt and a support block, and the pole support block bolt passes through the support block and is connected to the motor rotor body, insulating gaskets are provided on both sides of the support block, and the side of the insulating gasket away from the support block is in contact with the rotor winding.

[0019] By adopting the above technical solution, the pole installation positioning auxiliary device is quickly fixedly connected with the support block and the motor rotor body through the pole support block bolts, and the two adjacent damping rings are connected with the damping connecting plate through bolts. The damping connecting plate is made of copper material, which is a soft metal, so that a flexible connection is achieved through the damping connecting plate, and the support block is separated from the rotor winding by an insulating gasket.

[0020] Preferably, a flexible pad is provided between the pole support block bolt and the support block, and a double-hole stop pad is provided between the flexible pad and the pole support block bolt, a butterfly spring is provided at the connection between the support block and the pole support block bolt, and a spring washer is provided between the butterfly spring and the support block.

[0021] By adopting the above technical scheme, the pole installation positioning auxiliary device realizes a rapid fixed connection with the support block and the motor rotor body through the pole support block bolts, and when the pole support block bolts are connected, a double-hole stop pad is used to prevent the pole support block bolts from loosening during connection, and a flexible pad is provided between the pole support block bolts and the support block. The pole support block bolts can be moved up and down within a certain range through butterfly springs and spring washers, thereby realizing a flexible connection between the pole installation positioning auxiliary device and the damping ring wiring device and the motor rotor body.

[0022] Preferably, a pole coil connecting plate is provided in the pole coil wiring device, and two adjacent groups of the rotor windings are connected via the pole coil connecting plate, a fixing bolt is connected between the pole coil connecting plate and the rotor core, and two groups of limit nuts symmetrical with the pole coil connecting plate as the axis of symmetry are provided on the fixing bolt.

[0023] By adopting the above technical solution, the pole coil connecting piece is made of copper material, which is a soft metal, so that the rotor winding can be flexibly connected through the pole coil connecting piece. Two adjacent groups of rotor windings are connected through the pole coil connecting piece on the pole coil wiring device, and the pole coil connecting piece is fixedly connected to the rotor core by fixing bolts, and the movement of the pole coil connecting piece is limited by two groups of limit nuts.

[0024] Preferably, an interpole connecting plate is connected between two adjacent groups of the pole coil wiring devices, and the interpole connecting plate is "W"-shaped, and two groups of cable connecting holes are provided on the interpole connecting plate, the cables of the two adjacent groups of the pole coil wiring devices are respectively connected to the cable connecting holes, and a connecting plate is connected between the interpole connecting plate and the rotor core, and the connecting plate is connected to the rotor core by bolts.

[0025] By adopting the above technical solution, the inter-pole connecting plates are also made of copper material, which is a soft metal, so that the two sets of pole coil wiring devices can achieve flexible connection between the poles through the inter-pole connecting plates, and the inter-pole connecting plates are connected to adjacent cables through cable connecting holes, and the inter-pole connecting plates are connected to the rotor core through connecting plates.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. Compared with the prior art, this large synchronous motor winding rotor connection structure changes the traditional hard copper bar welding connection structure and greatly improves the connection efficiency and maintenance convenience. The two sets of pole coil connection devices realize flexible connection between poles through the inter-pole connecting plate. The two adjacent sets of rotor windings are connected through the pole coil connecting plate on the pole coil connection device, and the pole coil connecting plate is fixedly connected to the rotor core through fixing bolts. The pole coil connecting plate is made of copper material, which is a soft metal, so that the rotor winding can be flexibly connected through the pole coil connecting plate.

[0028] 2. Compared with the prior art, the winding rotor wiring structure of a large synchronous motor adopts an inter-pole connection device to achieve flexible connection, eliminating the risk of breakage in welding connection. Two groups of adjacent damping rings are connected through the damping connecting piece on the damping ring wiring device, and the damping ring wiring device is connected to the rotor core through the damping connecting piece. The damping connecting piece realizes the rapid connection between the damping ring wiring device and the rotor core through the connecting bolt and the connecting sleeve, and the flexible buffer gasket is fixedly connected to the outside of the connecting bolt by a fixing nut, and the damping connecting piece is made of copper material, which is soft. Metal, thereby achieving flexible connection through the damping connecting plate, the pole installation positioning auxiliary device is quickly fixedly connected with the support block and the motor rotor body through the pole support block bolts, and the pole support block bolts are connected through a double-hole stop pad to prevent the pole support block bolts from loosening during connection, and the pole support block bolts and the flexible pad between the support block, and the pole support block bolts can be moved up and down within a certain range through butterfly springs and spring washers, thereby achieving flexible connection between the pole installation positioning auxiliary device and the damping ring wiring device and the motor rotor body.

[0029] 3. Compared with the prior art, this large synchronous motor winding rotor wiring structure avoids the situation that the rotor breaks at the wiring during rotation through the flexible connection structure of the lead-out wire. The pole coil lead-out wire wiring device can be quickly connected to the rotor core by bolts. The wiring fixture is a flexible connection device, and the lead-out cable is connected to the connecting wiring device through the wiring fixture. The connecting wiring device and the wiring fixture are flexibly connected through a connecting gasket, and the connecting gasket and the connecting wiring device, as well as the connecting gasket and the wiring fixture, are telescopic and retractable through a telescopic spring, as well as folding and rotating at a certain angle. The connection position and direction of the lead-out cable can be limited and fixed by a cable clamp, and the lead-out cable is clamped and fixed in the wiring fixture by a clamping bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of a side section of the main body of the present application;

[0031] Figure 2 A schematic diagram of the structure of the main body of the present application from a top view;

[0032] Figure 3 This is a schematic diagram of the structure of the rotor core of the present application when viewed from above;

[0033] Figure 4 This is a schematic structural diagram of the side cross-section of the rotor magnetic pole of the present application;

[0034] Figure 5 This is a schematic diagram of the structure of one end of the rotor magnetic pole of the present application;

[0035] Figure 6 This is a schematic diagram of the structure of the pole coil lead wire connection device of the present application;

[0036] Figure 7 This is a schematic structural diagram of a side section of the wiring fixture of the present application;

[0037] Figure 8 It is a schematic structural diagram of the side section of the damping ring wiring device of the present application;

[0038] Fig. 9 This is a schematic diagram of the structure of the rotor magnetic pole of the present application;

[0039] Fig.10 This is a schematic diagram of the structure of the damping ring wiring device of the present application;

[0040] Fig.11 This is a schematic diagram of the structure of the magnetic pole installation positioning auxiliary device of the present application;

[0041] Fig.12 It is a structural schematic diagram of the magnetic pole coil connection device of the present application;

[0042] Fig.13 This is a schematic diagram of the structure of the inter-electrode connecting piece of the present application.

[0043] The accompanying drawings are marked as follows: 1, motor rotor body; 2, rotor core; 3, rotor shaft; 4, pole coil lead-out wiring device; 41, connection wiring device; 42, coil connecting piece; 43, wiring fixing device; 431, connection gasket; 432, telescopic spring; 433, clamping bolt; 5, lead-out cable; 51, cable clamp block; 6, damping ring wiring device; 61, pole installation positioning auxiliary device; 611, pole support block bolt; 612, double-hole stop pad; 613, flexible pad; 614, insulating pad; 615, support block; 616, butterfly spring; 617, spring washer; 62, damping ring; 63, damping rod; 64, pole punching plate; 65, pole pressure plate; 66, damping connecting plate; 7, rotor pole; 71, rotor winding; 8, pole coil wiring device; 81, pole coil connecting plate; 82, fixing bolt; 821, limit nut; 9, inter-pole connecting plate; 91, connecting plate; 92, cable connection hole. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] The following is combined with Figure 1-Figure 13 , further details of this application are given.

[0046] A large synchronous motor winding rotor connection structure, referring to Figure 1 and Figure 2 as well as Figure 3 and Figure 4 , comprising a motor rotor body 1, a plurality of damping rings 62 are arranged on the outer side of the motor rotor body 1, a rotor core 2 is arranged at the inner center of the motor rotor body 1, and a rotor shaft 3 is connected to the rotor core 2, a plurality of rotor poles 7 are arranged on the rotor core 2, and the plurality of rotor poles 7 are arranged in a ring shape with the rotor shaft 3 as the axis, and a rotor winding 71 is wound and connected to the rotor pole 7;

[0047] Among them, the rotor core 2 is connected with a pole coil lead-out wiring device 4 and a pole coil wiring device 8, and a coil connecting piece 42 is connected between the rotor winding 71 and the pole coil lead-out wiring device 4, a lead-out cable 5 is connected between the pole coil lead-out wiring device 4 and the rotor shaft 3, and a damping ring wiring device 6 is connected between two adjacent groups of damping rings 62; the motor rotor body 1 is connected in a large motor, and rotates with the motor stator through the rotor core 2 and the rotor pole 7, and the motor rotor body 1 drives the rotor shaft 3 to rotate during the rotation process, and the rotor winding 71 is wound and connected to each rotor pole 7 through the damping ring wiring device 6 and the pole coil wiring device 8, and the rotor winding 71 is connected to the lead-out cable 5 and the brush slip ring on the rotor shaft 3 through the pole coil lead-out wiring device 4, and the rotor winding 71 makes the motor run more stably through the damping ring 62.

[0048] Reference Figure 5 and Figure 6 A cable clamp block 51 is provided at the connection between the lead-out cable 5 and the rotor shaft 3, the lead-out cable 5 and the coil connecting piece 42 are connected in the connecting wiring device 41, the pole coil lead-out wiring device 4 includes a connecting wiring device 41 and a wiring fixture 43, and the connecting wiring device 41 is connected to the rotor core 2 by bolts, and one end of the lead-out cable 5 is connected to the connecting wiring device 41 by the wiring fixture 43; the pole coil lead-out wiring device 4 can be quickly connected to the rotor core 2 by bolts, the wiring fixture 43 is a flexible connecting device, and the lead-out cable 5 is connected to the connecting wiring device 41 by the wiring fixture 43, and the connection position and direction of the lead-out cable 5 are limited and fixed by the cable clamp block 51.

[0049] Reference Figure 6 and Figure 7A connecting gasket 431 is provided between the wiring fixture 43 and the connecting wiring device 41, and a telescopic spring 432 is connected between the connecting gasket 431 and the connecting wiring device 41, and between the connecting gasket 431 and the wiring fixture 43. A clamping bolt 433 is connected to one side of the wiring fixture 43, and one end of the clamping bolt 433 clamps the lead-out cable 5 in the wiring fixture 43; the connecting wiring device 41 and the wiring fixture 43 are flexibly connected through the connecting gasket 431, and the connecting gasket 431 and the connecting wiring device 41, as well as the connecting gasket 431 and the wiring fixture 43, are telescopically and folded and rotated at a certain angle through the telescopic spring 432, and the lead-out cable 5 is clamped and fixed in the wiring fixture 43 by the clamping bolt 433.

[0050] Reference Figure 8 and Fig.10 The rotor poles 7 at both ends of the rotor core 2 on the same vertical line are connected by cable winding, the damping ring 62 is short-circuited and connected with a damping rod 63, a magnetic pole pressure plate 65 is connected between the damping ring 62 and the motor rotor body 1, and a magnetic pole punching 64 is connected between the two groups of magnetic pole pressure plates 65 located on the same straight line; the damping rod 63 is used to eliminate the vibration between the rotor windings 71, two adjacent groups of damping rings 62 are connected by the damping connecting plate 66 on the damping ring wiring device 6, and the damping ring wiring device 6 is connected to the rotor core 2 through the damping connecting plate 66, the magnetic pole punching 64 is used to generate a magnetic field, thereby driving the motor to operate normally, and the magnetic pole pressure plate 65 is used to press the magnetic pole punching 64 and the rotor winding 71.

[0051] Reference Figure 8 and Fig.10 The damping ring wiring device 6 includes a magnetic pole installation and positioning auxiliary device 61 and a damping connecting piece 66, and the cross-sectional shape of the damping connecting piece 66 is an inverted equilateral trapezoid with an open upper end, the damping connecting piece 66 is connected to the motor rotor body 1 by bolts, and the damping connecting piece 66 is connected to the damping ring 62 by bolts; the magnetic pole installation and positioning auxiliary device 61 is used to assist the installation and connection of the damping ring wiring device 6, the damping connecting piece 66 is used to realize the quick connection between the damping ring wiring device 6 and the rotor core 2 by bolts, and the damping connecting piece 66 is used to realize the quick connection with the damping ring 62 by bolts.

[0052] Reference Fig.11The pole installation positioning auxiliary device 61 includes a pole support block bolt 611 and a support block 615, and the pole support block bolt 611 passes through the support block 615 and is connected to the motor rotor body 1. Insulating gaskets 614 are provided on both sides of the support block 615, and the side of the insulating gasket 614 away from the support block 615 is in contact with the rotor winding 71; the pole installation positioning auxiliary device 61 is quickly fixedly connected with the support block 615 and the motor rotor body 1 through the pole support block bolt 611, and two groups of adjacent damping rings 62 are connected with the damping connecting plate 66 through bolts, and the damping connecting plate 66 is made of copper material, which is a soft metal, so that a flexible connection is achieved through the damping connecting plate 66, and the support block 615 is separated from the rotor winding 71 by the insulating gasket 614.

[0053] Reference Fig.11 A flexible pad 613 is arranged between the pole support block bolt 611 and the support block 615, and a double-hole stop pad 612 is arranged between the flexible pad 613 and the pole support block bolt 611, a butterfly spring 616 is arranged at the connection between the support block 615 and the pole support block bolt 611, and a spring washer 617 is arranged between the butterfly spring 616 and the support block 615; when the pole support block bolt 611 is connected, the double-hole stop pad 612 is used to prevent the pole support block bolt 611 from loosening during connection, and the flexible pad 613 between the pole support block bolt 611 and the support block 615, and the pole support block bolt 611 can realize the pole support block bolt 611 to move up and down within a certain range through the butterfly spring 616 and the spring washer 617, thereby realizing the flexible connection between the pole installation positioning auxiliary device 61 and the damping ring wiring device 6 and the motor rotor body 1.

[0054] Reference Fig.12 A pole coil connecting piece 81 is provided in the pole coil wiring device 8, and two adjacent groups of rotor windings 71 are connected through the pole coil connecting piece 81, a fixing bolt 82 is connected between the pole coil connecting piece 81 and the rotor core 2, and two groups of limiting nuts 821 symmetrically arranged with the pole coil connecting piece 81 as the symmetry axis are provided on the fixing bolt 82; the pole coil connecting piece 81 is made of copper material, which is a soft metal, so that the rotor winding 71 can be flexibly connected through the pole coil connecting piece 81, and two adjacent groups of rotor windings 71 are connected through the pole coil connecting piece 81 on the pole coil wiring device 8, and the pole coil connecting piece 81 is fixedly connected to the rotor core 2 through the fixing bolt 82, and the movement of the pole coil connecting piece 81 is limited by the two groups of limiting nuts 821.

[0055] Reference Fig.12 and Fig.13An interpolar connecting piece 9 is connected between two adjacent groups of pole coil wiring devices 8, and the interpolar connecting piece 9 is "W"-shaped, and two groups of cable connection holes 92 are provided on the interpolar connecting piece 9, and the cables of the two adjacent groups of pole coil wiring devices 8 are respectively connected to the cable connection holes 92, and a connecting plate 91 is connected between the interpolar connecting piece 9 and the rotor core 2, and the connecting plate 91 is connected to the rotor core 2 through bolts; the interpolar connecting piece 9 is also made of copper material, which is a soft metal, so that the two groups of pole coil wiring devices 8 can realize flexible connection between poles through the interpolar connecting piece 9, and the interpolar connecting piece 9 is used to connect adjacent cables through the cable connection holes 92, and the interpolar connecting piece 9 is connected to the rotor core 2 through the connecting plate 91.

[0056] The working process of the present application is as follows: the motor rotor body 1 is connected to the large motor, and rotates with the motor stator through the rotor core 2 and the rotor pole 7, and the motor rotor body 1 drives the rotor shaft 3 to rotate during the rotation, and the rotor winding 71 is wound and connected to each rotor pole 7 through the damping ring wiring device 6 and the pole coil wiring device 8, and the rotor winding 71 is connected to the lead-out cable 5 and the brush slip ring on the rotor shaft 3 through the pole coil lead-out wire wiring device 4, and the rotor winding 71 makes the motor run more stably through the damping ring 62;

[0057] Two groups of adjacent damping rings 62 are connected through the damping connecting piece 66 on the damping ring wiring device 6, and the damping ring wiring device 6 is connected to the rotor core 2 through the damping connecting piece 66. The damping connecting piece 66 is connected to the damping ring 62 through the connecting bolt to realize the quick connection between the damping ring wiring device 6 and the rotor core 2, and the flexible buffer gasket 642 is fixedly connected to the outer side of the connecting bolt through the fixing nut 641, and the vibration generated by the movement of the fixing nut 641 is absorbed by the flexible buffer gasket 642, and the damping rod 63 is used to eliminate the vibration between the rotor windings 71, and the damping connecting piece 66 is made of copper material, which is a soft metal, so that the flexible connection is realized through the damping connecting piece 66;

[0058] The rotor winding 71 is wound and connected to each rotor pole 7 through the damping ring wiring device 6 and the pole coil wiring device 8, and the rotor winding 71 is connected to the lead-out cable 5 and the brush slip ring on the rotor shaft 3 through the pole coil lead-out wire wiring device 4. Two adjacent groups of rotor windings 71 are connected through the pole coil connecting piece 81 on the pole coil wiring device 8, and the pole coil connecting piece 81 is fixedly connected to the rotor core 2 through the fixing bolt 82, and the movement of the pole coil connecting piece 81 is limited by two groups of limiting nuts 821, and the pole coil connecting piece 81 is made of copper material, which is a soft metal, so that the rotor winding 71 can be flexibly connected through the pole coil connecting piece 81;

[0059] The pole coil lead-out wiring device 4 can be quickly connected to the rotor core 2 by bolts, the wiring fixture 43 is a flexible connection device, and the lead-out cable 5 is connected to the connection wiring device 41 through the wiring fixture 43, the connection wiring device 41 and the wiring fixture 43 are flexibly connected through the connecting gasket 431, and the connecting gasket 431 and the connection wiring device 41 as well as the connecting gasket 431 and the wiring fixture 43 are telescopic and folded and rotated at a certain angle through the telescopic spring 432, and the connection position and direction of the lead-out cable 5 can be limited and fixed by the cable clamp 51, and the lead-out cable 5 is clamped and fixed in the wiring fixture 43 by the clamping bolt 433.

[0060] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any 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 large synchronous motor winding rotor connection structure, comprising a motor rotor body (1), characterized in that: A plurality of groups of damping rings (62) are arranged on the outside of the motor rotor body (1), a rotor core (2) is arranged at the center of the motor rotor body (1), and a rotor shaft (3) is connected to the rotor core (2), a plurality of groups of rotor magnetic poles (7) are arranged on the rotor core (2), and the plurality of groups of rotor magnetic poles (7) are arranged in a ring shape with the rotor shaft (3) as the axis, and a rotor winding (71) is wound around the rotor magnetic poles (7); The rotor core (2) is connected to a magnetic pole coil lead-out wiring device (4) and a magnetic pole coil wiring device (8), a coil connecting piece (42) is connected between the rotor winding (71) and the magnetic pole coil lead-out wiring device (4), a lead-out cable (5) is connected between the magnetic pole coil lead-out wiring device (4) and the rotor shaft (3), and a damping ring wiring device (6) is connected between two adjacent groups of damping rings (62).

2. A large synchronous motor winding rotor connection structure according to claim 1, characterized in that: A cable clamp (51) is provided at the connection between the lead-out cable (5) and the rotor shaft (3); the lead-out cable (5) and the coil connecting piece (42) are connected in a connection wiring device (41); the pole coil lead-out wiring device (4) comprises a connection wiring device (41) and a wiring fixing device (43); the connection wiring device (41) is connected to the rotor core (2) by bolts; and one end of the lead-out cable (5) is connected to the connection wiring device (41) by the wiring fixing device (43).

3. A large synchronous motor winding rotor connection structure according to claim 2, characterized in that: A connecting gasket (431) is provided between the wiring fixture (43) and the connecting wiring device (41), and a telescopic spring (432) is connected between the connecting gasket (431) and the connecting wiring device (41) and between the connecting gasket (431) and the wiring fixture (43). A clamping bolt (433) is connected to one side of the wiring fixture (43), and one end of the clamping bolt (433) clamps the lead-out cable (5) on the wiring fixture (43).

4. A large synchronous motor winding rotor connection structure according to claim 1, characterized in that: The rotor poles (7) at both ends of the rotor core (2) located on the same vertical line are connected by cable winding, the damping ring (62) is short-circuited and connected with a damping rod (63), a magnetic pole pressure plate (65) is connected between the damping ring (62) and the motor rotor body (1), and a magnetic pole punching sheet (64) is connected between two groups of the magnetic pole pressure plates (65) located on the same straight line.

5. A large synchronous motor winding rotor connection structure according to claim 4, characterized in that: The damping ring wiring device (6) comprises a magnetic pole installation positioning auxiliary device (61) and a damping connecting piece (66), and the cross-sectional shape of the damping connecting piece (66) is an inverted equilateral trapezoid with an open upper end, the damping connecting piece (66) is connected to the motor rotor body (1) by bolts, and the damping connecting piece (66) is connected to the damping ring (62) by bolts.

6. A large synchronous motor winding rotor connection structure according to claim 5, characterized in that: The magnetic pole installation positioning auxiliary device (61) comprises a magnetic pole support block bolt (611) and a support block (615), wherein the magnetic pole support block bolt (611) passes through the support block (615) and is connected to the motor rotor body (1), insulating gaskets (614) are provided on both sides of the support block (615), and a side of the insulating gasket (614) away from the support block (615) is in contact with the rotor winding (71).

7. A large synchronous motor winding rotor connection structure according to claim 6, characterized in that: A flexible pad (613) is provided between the pole support block bolt (611) and the support block (615), and a double-hole stop pad (612) is provided between the flexible pad (613) and the pole support block bolt (611). A butterfly spring (616) is provided at the connection between the support block (615) and the pole support block bolt (611), and a spring washer (617) is provided between the butterfly spring (616) and the support block (615).

8. A large synchronous motor winding rotor connection structure according to claim 1, characterized in that: A pole coil connection sheet (81) is provided in the pole coil connection device (8), and two adjacent groups of rotor windings (71) are connected via the pole coil connection sheet (81). A fixing bolt (82) is connected between the pole coil connection sheet (81) and the rotor core (2), and two groups of limit nuts (821) are provided on the fixing bolt (82) and are symmetrical with the pole coil connection sheet (81) as a symmetry axis.

9. A large synchronous motor winding rotor connection structure according to claim 8, characterized in that: An inter-pole connecting piece (9) is connected between two adjacent groups of the magnetic pole coil wiring devices (8), and the inter-pole connecting piece (9) is "W"-shaped, and two groups of cable connection holes (92) are provided on the inter-pole connecting piece (9), and the cables of the two adjacent groups of the magnetic pole coil wiring devices (8) are respectively connected to the cable connection holes (92), and a connecting plate (91) is connected between the inter-pole connecting piece (9) and the rotor core (2), and the connecting plate (91) is connected to the rotor core (2) by bolts.

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