A slip ring and rotor lead cable mounting structure

Abstract

The application relates to a slip ring and rotor lead-out cable mounting structure, which comprises an insulating sleeve arranged on a rotating shaft, a plurality of slip rings arranged on the insulating sleeve, an adjustable supporting ring arranged between the slip rings and the rotating shaft, a plurality of first guide rods evenly inserted on the supporting ring along the axial direction, a plurality of second guide rods arranged on the slip rings along the axial direction, and the first guide rods and the second guide rods are provided with conductive cores and insulating layers covering the outer surfaces of the conductive cores, and the two ends of the first guide rods are electrically connected with the second guide rods and rotor lead-out wires respectively. The application changes the traditional method of punching and threading in the rotating shaft, avoids the hidden troubles and the inconvenience in the process caused by the drilling in the rotating shaft, is simple to operate, is reliable in connection, and the adjustable supporting ring can adjust the angle and position of the installation according to the positions of the rotor lead-out wires and the slip rings.

Description

Technical Field

[0001] This invention relates to the field of generator technology, specifically to a slip ring and rotor lead cable installation structure. Background Technology

[0002] The generator rotor winding is connected to the slip ring via leads. The original slip ring lead structure was a shaft-surface lead connection structure. The generator rotor winding was led out to the motor shaft surface through an L-shaped lead connector mounted on the iron core, then bent 90 degrees and led axially to the shaft end face, where it was connected to the slip ring. However, the rigidity of the cable during bending made the lead connector connection difficult and inconvenient.

[0003] To overcome this defect, a shaft center hole lead wire structure was developed. This structure involves creating a cable lead wire hole in the motor shaft where the slip ring is assembled, and also creating a cable insertion hole on the shaft surface. The rotor winding lead wire passes through this insertion hole into the lead wire hole. After exiting the shaft end, the lead wire must be bent further to connect to the slip ring terminal. Because the rotor winding lead wire is relatively thick, the on-site wiring operation—bending it 90 degrees after exiting the shaft end to connect it to the slip ring terminal—is particularly difficult. Furthermore, the drilling process on the shaft is complex, alters the shaft structure, causes stress deviations, and affects the shaft's service life. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a slip ring and rotor lead cable mounting structure for connecting slip rings and rotor lead cables.

[0005] To achieve the above objectives, this invention provides the following technical solution: a slip ring and rotor lead cable installation structure, comprising an insulating sleeve mounted on a rotating shaft, a set of slip rings mounted on the insulating sleeve, an adjustable support ring positioned between the rotating shaft and the slip rings and the rotor, a plurality of first guide rods evenly inserted along the axial direction on the support ring, and a plurality of second guide rods mounted along the axial direction on the slip ring. The first and second guide rods have conductive cores and insulating layers covering the outer surface of the conductive cores. The two ends of the first guide rods are electrically connected to the second guide rods and the rotor lead cable, respectively. A plurality of through holes are radially arranged on the support ring, and pressure blocks corresponding to the cross-sections of the through holes are slidably fitted inside the through holes. An adjusting sleeve is threaded onto the outer side of the support ring, and a chamfered bevel is provided on the inner side of the adjusting sleeve near the pressure block. The end of the pressure block away from the axis is also provided with a bevel, and the bevel of the pressure block and the bevel of the adjusting sleeve form a wedge structure.

[0006] The slip ring is snapped onto the insulating sleeve. Multiple sets of second guide rods are installed on the slip ring. An adjustable support ring is installed between the slip ring and the rotor. Multiple first guide rods are evenly inserted into the support ring. The rotor lead wires are electrically connected to the slip ring via the first and second guide rods. This method changes the traditional method of drilling holes inside the shaft for wire threading, avoiding potential malfunctions and process inconveniences caused by drilling inside the shaft. It is simple to operate, has a reliable connection, and the adjustable support ring allows for adjustment of the installation angle and position according to the position of the rotor lead wires and the slip ring. The support ring and the shaft have a clearance fit, facilitating adjustment of the support ring during installation. This allows the first guide rods inserted into the support ring to electrically connect with the second guide rods on the slip ring. After adjusting the position of the support ring, the adjusting sleeve on the outside of the support ring is rotated. Under the action of the threaded engagement, the adjusting sleeve moves towards the pressure block. The inner side of the adjusting sleeve near the pressure block is provided with a chamfered bevel, and the end of the pressure block away from the axis is also provided with a bevel. The bevel of the pressure block and the bevel of the adjusting sleeve form a wedge structure. During the movement, the pressure block is moved towards the axis of the rotating shaft by the force applied by the adjusting sleeve. After moving to a certain extent, it locks with the rotating shaft. At this time, the support ring is installed and set on the rotating shaft to form a self-locking mechanism. This method can easily adjust the position of the first guide rod inserted on the support ring so that the first guide rod corresponds to the second guide rod on the slip ring. This facilitates installation and subsequent maintenance. It is simple to manufacture and easy to operate, has strong applicability, ensures the structural integrity of the rotating shaft, extends its service life, and prevents the rotor lead wire from breaking due to friction with the hole wall of the rotating shaft opening.

[0007] Preferably, the second guide rod is provided with three types of slip rings: three slip rings, two slip rings, and three slip rings, with the same number of second guide rods evenly distributed. A terminal is provided at the end of the second guide rod closest to the rotor lead wire. A retaining ring is provided between the slip ring and the terminal of the second guide rod. A threaded head is provided on the conductive core at the end of the second guide rod away from the retaining ring. A nut and a washer are provided on the threaded head. The washer is placed on the slip ring. The second guide rod is electrically connected to the slip ring through the threaded head on the conductive core, as well as the nut and washer.

[0008] Different second guide rods are electrically connected to slip rings at different positions. The connection between the second guide rod and the slip ring uses a threaded head, washer, and nut. A conductive core is set inside the second guide rod, and a threaded head is set on the conductive core. A retaining ring is set on the second guide rod away from the threaded head and is connected to the second guide rod. Under the combined action of the nut, threaded head, and retaining ring, the second guide rod inserted into the slip ring is more secure, which not only ensures the energizing performance of the second guide rod, but also prevents the second guide rod from shaking violently during use and affecting its use. It is easy to install, simple to manufacture, and has a reliable connection.

[0009] Preferably, a groove is provided at the end of the pressure block away from the adjusting sleeve, and a threaded hole communicating with the through hole is provided at the end of the support ring near the groove. The diameter of the threaded hole is smaller than the width of the groove, and a support bolt is provided in the threaded hole. The end of the support bolt passes through the threaded hole and is located in the groove.

[0010] The support ring has a threaded hole that communicates with the through hole at one end near the slide groove. A support bolt is installed on the threaded hole. The diameter of both the threaded hole and the support bolt is smaller than the width of the slide groove on the pressure block. The support bolt passes through the threaded hole and is inserted into the slide groove. The support bolt inserted into the slide groove prevents the support ring from falling off the pressure block during installation and ensures that the slider can be used normally.

[0011] Preferably, the first guide rod conductive core is provided with terminals at both ends, and the second guide rod and rotor lead wire are provided with terminals. The first guide rod conductive core is electrically connected to the second guide rod and rotor lead wire through the terminals.

[0012] The first conductor rod has terminals at both ends, which are electrically connected to the second conductor rod and the rotor lead wire, facilitating the connection of the first conductor rod.

[0013] Preferably, the end of the first guide rod near the rotor is electrically connected to the first lead wire via a connector, and the first lead wire is electrically connected to the rotor lead wire via a connector.

[0014] When the rotor lead wire is not long enough to bend, a first lead wire is electrically connected between the first guide rod and the rotor lead wire to protect the electronic lead wire. In case of failure, the first lead wire can be replaced without disassembling the rotor, which facilitates maintenance and extends the service life of the rotor and rotor lead wire.

[0015] Preferably, the end of the first guide rod near the slip ring is electrically connected to the second lead through a connector, and the second lead is electrically connected to the second guide rod through a connector.

[0016] The positions of the second guide rods inserted on different slip rings vary. When the second guide rod and the first guide rod cannot be collinear, the second guide rod is electrically connected to the first guide rod through the second lead wire to ensure the electrical connection between the first guide rod and the second guide rod.

[0017] Preferably, the connector includes copper wire lugs, which are interconnected by conductive bolts and conductive nuts.

[0018] Using copper lug wires as connectors reduces costs, ensures a secure connection that is less prone to detachment, facilitates easy connection and operation, and also makes subsequent maintenance and replacement convenient.

[0019] Compared with the prior art, the advantages of this invention are as follows: the slip ring is snapped onto the insulating sleeve, multiple sets of second guide rods are provided on the slip ring, an adjustable support ring is provided between the slip ring and the rotor, multiple first guide rods are evenly inserted into the support ring, and the rotor lead wire is electrically connected to the slip ring through the first and second guide rods. This changes the traditional method of drilling holes inside the shaft to thread the wire, avoiding the potential for failure and inconvenience caused by drilling holes inside the shaft. It is simple to operate, has a reliable connection, prevents wear caused by the lead wire being drilled inside the shaft, ensures the structural integrity of the shaft, reduces the need for drilling holes and slots on the shaft, and extends the shaft's lifespan. The adjustable support ring can adjust the installation angle and position according to the position of the rotor lead wire and the slip ring. The support ring and the shaft are... The clearance fit facilitates adjustment of the support ring during installation. The adjusting sleeve has a chamfered bevel at the end near the pressure block, while the pressure block has a bevel at the end away from the axis. The bevels of the pressure block and the adjusting sleeve form a wedge structure. Rotating the adjusting sleeve via a threaded connection causes the pressure block to move towards the center line of the rotating shaft and engage with it, creating a self-locking mechanism to prevent movement of the support ring during use. The second guide rod has a threaded head on its conductive core. This threaded head, along with a washer and nut, electrically connects the second guide rod to the slip ring, ensuring a convenient, secure, and reliable connection. Using copper lug wire as the connector reduces costs, provides a secure connection that is less prone to detachment, and facilitates easy operation, maintenance, and replacement. Attached Figure Description

[0020] Appendix Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Appendix Figure 2 This is a front view of the present invention;

[0022] Appendix Figure 3 This is a schematic cross-sectional view of the present invention;

[0023] Appendix Figure 4 This is a schematic diagram of the cross-sectional structure of the present invention;

[0024] Appendix Figure 5 Appendix to this invention Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0025] Appendix Figure 6 Appendix to this invention Figure 3 Enlarged schematic diagram of the structure at point B;

[0026] Appendix Figure 7 Appendix to this invention Figure 4 Enlarged schematic diagram of the structure at point C.

[0027] The following are the labels in the attached diagram: 1. Shaft; 2. Slip ring; 3. Terminal; 4. First guide rod; 5. Insulating sleeve; 6. Support ring; 7. Adjusting sleeve; 8. Pressure block; 9. Support bolt; 10. Threaded hole; 11. First lead wire; 12. Washer; 13. Slide groove; 14. Rotor lead wire; 15. Through hole; 16. Second guide rod; 17. Second lead wire; 18. Retaining ring; 19. Threaded head; 20. Copper wire lug; 21. Conductive bolt; 22. Conductive nut; 23. Nut. Detailed Implementation

[0028] The invention will be further described below with reference to specific embodiments, such as... Figures 1-7As shown, a slip ring and rotor lead cable installation structure includes an insulating sleeve 5 mounted on a rotating shaft 1, a set of slip rings 2 mounted on the insulating sleeve 5, an adjustable support ring 6 positioned between the slip rings 2 and the rotor on the rotating shaft 1, a plurality of first guide rods 4 evenly inserted along the axial direction on the support ring 6, a plurality of second guide rods 16 mounted along the axial direction on the slip rings 2, the first guide rods 4 and the second guide rods 16 having conductive cores and insulating layers covering the outer surface of the conductive cores, the two ends of the first guide rods 4 being electrically connected to the second guide rods 16 and the rotor lead cable 14 respectively, a plurality of through holes 15 radially mounted on the support ring 6, pressure blocks 8 corresponding to the cross-section of the through holes 15 slidingly mounted inside the through holes 15, an adjusting sleeve 7 threadedly mounted on the outer side of the support ring 6, the inner side of the adjusting sleeve 7 near the pressure block 8 having a chamfered bevel, the end of the pressure block 8 away from the axis having a bevel, the bevel of the pressure block 8 and the bevel of the adjusting sleeve 7 forming a wedge structure. The slip ring 2 is snapped onto the insulating sleeve 5. Multiple sets of second guide rods 16 are installed on the slip ring 2. An adjustable support ring 6 is installed between the slip ring 2 and the rotor. Multiple first guide rods 4 are evenly inserted into the support ring 6. The rotor lead wire 14 is electrically connected to the slip ring 2 through the first guide rods 4 and the second guide rods 16. This method changes the traditional method of drilling holes inside the rotating shaft 1 to thread the wire, avoiding potential faults and inconveniences caused by drilling inside the rotating shaft 1. It is simple to operate and has a reliable connection. The adjustable support ring 6 can adjust the installation angle and position according to the position of the rotor lead wire 14 and the slip ring 2. The support ring 6 and the rotating shaft 1 have a clearance fit, facilitating adjustment of the support ring 6 during installation. This allows the first guide rods 4 inserted into the support ring 6 to be electrically connected to the second guide rods 16 on the slip ring 2. After adjusting the position of the support ring 6, the adjusting sleeve 7 on the outside of the support ring 6 is rotated. The adjusting sleeve 7 moves towards the pressure block 8 under the action of the threaded engagement. The inner end of the adjusting sleeve 7 near the pressure block 8 is provided with a chamfered bevel, and the end of the pressure block 8 away from the axis is provided with a bevel. The bevel of the pressure block 8 and the bevel of the adjusting sleeve 7 form a wedge structure. During the movement, the pressure block 8 is moved towards the axis of the rotating shaft 1 by the force applied by the adjusting sleeve 7. After moving to a certain extent, it is locked with the rotating shaft 1. At this time, the support ring 6 is installed and set on the rotating shaft 1 to form a self-locking mechanism. This method can easily adjust the position of the first guide rod 4 inserted on the support ring 6 so that the first guide rod 4 corresponds to the second guide rod 16 on the slip ring 2. It is convenient for installation and subsequent maintenance. It is simple to manufacture and easy to operate, has strong applicability, ensures the structural integrity of the rotating shaft 1, extends the service life, and at the same time prevents the rotor lead wire 14 from breaking due to friction with the hole wall of the rotating shaft 1.

[0029] The second guide rod 16 is divided into three types: one with three layers of slip rings 2, one with two layers of slip rings 2, and one with three layers of slip rings 2, with the same number of the three types evenly arranged. A terminal 3 is provided at the end of the second guide rod 16 near the rotor lead wire 14. A retaining ring 18 is provided between the slip ring 2 and the terminal 3 of the second guide rod 16. A threaded head 19 is provided on the conductive core at the end of the second guide rod 16 away from the retaining ring 18. A nut 23 and a washer 12 are provided on the threaded head 19. The washer 12 is provided on the slip ring 2. The second guide rod 16 is electrically connected to the slip ring 2 through the threaded head 19 on the conductive core, the nut 23, and the washer 12. Different second guide rods 16 are electrically connected to slip rings 2 at different positions. The connection between the second guide rod 16 and the slip ring 2 is achieved by using a threaded head 19, a washer 12, and a nut 23. A conductive core is provided inside the second guide rod 16, and a threaded head 19 is provided on the conductive core. A retaining ring 18 is provided on the second guide rod 16 away from the threaded head 19. The retaining ring 18 is connected to the second guide rod 16. Under the combined action of the nut 23, the threaded head 19, and the retaining ring 18, the second guide rod 16 inserted into the slip ring 2 is more secure. This ensures the electrical performance of the second guide rod 16 and prevents the second guide rod 16 from shaking violently during use, which would affect its use. It is easy to install, simple to manufacture, and has a reliable connection.

[0030] A groove 13 is provided at the end of the pressure block 8 away from the adjusting sleeve 7. A threaded hole 10 communicating with the through hole 15 is provided at the end of the support ring 6 near the groove 13. The diameter of the threaded hole 10 is smaller than the width of the groove 13. A support bolt 9 is installed in the threaded hole 10, with the end of the support bolt 9 passing through the threaded hole 10 and located in the groove 13. The support ring 6 has a threaded hole 10 communicating with the through hole 15 at the end near the groove 13. A support bolt 9 is installed on the threaded hole 10. The diameters of both the threaded hole 10 and the support bolt 9 are smaller than the width of the groove 13 on the pressure block 8. The support bolt 9 passes through the threaded hole 10 and is inserted into the groove 13. The support bolt 9 inserted into the groove 13 prevents the pressure block 8 from falling off during the installation of the support ring 6, ensuring that the slider can be used normally.

[0031] The first guide rod 4 has terminals 3 at both ends of its conductive core. The second guide rod 16 and the rotor lead 14 also have terminals 3. The conductive core of the first guide rod 4 is electrically connected to the second guide rod 16 and the rotor lead 14 via the terminals 3. The terminals 3 at both ends of the first guide rod 4 facilitate the connection of the first conductive rod.

[0032] The end of the first guide rod 4 closest to the rotor is electrically connected to the first lead 11 via a connector 3. The first lead 11 is also electrically connected to the rotor lead 14 via connector 3. When the rotor lead 14 is too short to bend, the first lead 11 is electrically connected between the first guide rod 4 and the rotor lead 14, protecting the electronic lead. In case of a fault, the first lead 11 can be replaced without disassembling the rotor, facilitating maintenance and extending the service life of the rotor and rotor lead 14.

[0033] The end of the first guide rod 4 closest to the slip ring 2 is electrically connected to the second lead 17 via a connector 3. The second lead 17 is electrically connected to the second guide rod 16 via the connector 3. The positions of the second guide rod 16 inserted on different slip rings 2 vary. When the second guide rod 16 and the first guide rod 4 are not collinear, the second guide rod 16 is electrically connected to the first guide rod 4 via the second lead 17 to ensure the electrical connection between the first guide rod 4 and the second guide rod 16.

[0034] The connector 3 includes copper wire lugs 20, which are interconnected by conductive bolts 21 and conductive nuts 22. Using copper wire lugs as connector 3 reduces costs, provides a secure connection that is less prone to detachment, facilitates easy connection and operation, and also makes subsequent maintenance and replacement convenient.

[0035] Working principle: An adjustable support ring 6 is installed on the rotating shaft 1 between the slip ring 2 and the rotor. Multiple first guide rods 4 are inserted into the support ring 6, and multiple second guide rods 16 are inserted into the slip ring 2. The rotor lead wire 14 is electrically connected to the slip ring 2 through the first guide rods 4 and the second guide rods 16, changing the traditional connection method of drilling holes in the rotating shaft 1 for wire threading. The clearance fit between the support ring 6 and the rotating shaft 1 allows for easy adjustment of the installation position and angle of the support ring 6, thereby adjusting the position of the first guide rods 4 and facilitating the electrical connection between the first guide rods 4 and the second guide rods 16. The pressure block 8 and the adjusting sleeve 7 on the support ring 6 are connected by an inclined plane to form a wedge mechanism. Rotating the adjusting sleeve 7 causes the pressure block 8 to press against the rotating shaft 1 under the action of the adjusting sleeve 7, preventing relative displacement between the support shaft and the rotating shaft 1 during use. The adjusting sleeve 7 and the support shaft are connected by a... The threaded connection forms a self-locking mechanism. A threaded head 19 is provided on the conductive core of the second guide rod 16. The second guide rod 16 is electrically connected to the slip ring 2 through the interaction of the threaded head 19, washer 12, and nut 23. A retaining ring 18 is provided at the end of the second guide rod 16 furthest from the threaded head 19. The interaction of the retaining ring 18, nut 23, and threaded head 19 makes the connection between the second guide rod 16 and the slip ring 2 more secure. A first lead wire 11 is electrically connected between the first guide rod 4 and the rotor lead wire 14, and a second lead wire 17 is electrically connected between the first guide rod 4 and the second guide rod 16. The first lead wire 11 and the second lead wire 17 allow for more flexible connection positions, expanding the applicability of this structure. Furthermore, the connection method uses copper wire lugs 20, resulting in a more reliable connection, reduced operating costs, and easier disassembly and maintenance after prolonged use.

[0036] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined in this application.

Claims

1. A slip ring and rotor lead cable mounting structure, comprising an insulating sleeve (5) disposed on a rotating shaft (1), wherein a set of slip rings (2) are disposed on the insulating sleeve (5), characterized in that: An adjustable support ring (6) is provided between the rotating shaft (1) and the slip ring (2) and the rotor. Multiple first guide rods (4) are evenly inserted on the support ring (6) along the axial direction. Multiple sets of second guide rods (16) are provided on the slip ring (2) along the axial direction. The first guide rod (4) and the second guide rod (16) have conductive cores and insulating layers covering the outer surface of the conductive cores. The two ends of the first guide rod (4) are electrically connected to the second guide rod (16) and the rotor lead wire (14), respectively. Multiple through holes (15) are radially provided on the support ring (6). A pressure block (8) corresponding to the cross-section of the through hole (15) slides in the through hole (15). An adjusting sleeve (7) is provided on the outside of the support ring (6) by a thread. A chamfered bevel is provided on the inner side of the adjusting sleeve (7) near the pressure block (8). The end of the pressure block (8) away from the axis is set as a bevel. The bevel of the pressure block (8) and the bevel of the adjusting sleeve (7) form a wedge structure.

2. The installation structure for a slip ring and rotor lead cable according to claim 1, characterized in that: The second guide rod (16) is divided into three types: one with three slip rings (2), one with two slip rings (2), and one with three slip rings (2), and the number of the three types of second guide rods (16) is the same and evenly arranged. A terminal (3) is provided at the end of the second guide rod (16) near the rotor lead wire (14). A retaining ring (18) is provided between the slip ring (2) and the terminal (3) of the second guide rod (16). A threaded head (19) is provided on the conductive core at the end of the second guide rod (16) away from the retaining ring (18). A nut (23) and a washer (12) are provided on the threaded head (19). The washer (12) is provided on the slip ring (2). The second guide rod (16) is electrically connected to the slip ring (2) through the threaded head (19) on the conductive core, the nut (23), and the washer (12).

3. The installation structure for a slip ring and rotor lead cable according to claim 1, characterized in that: The pressure block (8) is provided with a groove (13) at the end away from the adjusting sleeve (7). The support ring (6) is provided with a threaded hole (10) communicating with the through hole (15) at the end near the groove (13). The diameter of the threaded hole (10) is smaller than the width of the groove (13). A support bolt (9) is provided in the threaded hole (10). The end of the support bolt (9) passes through the threaded hole (10) and is located in the groove (13).

4. The installation structure for a slip ring and rotor lead cable according to claim 1, characterized in that: The first guide rod (4) has terminals (3) at both ends of its conductive core, and the second guide rod (16) and rotor lead wire (14) are also provided with terminals (3). The first guide rod (4) is electrically connected to the second guide rod (16) and rotor lead wire (14) through the terminals (3).

5. The installation structure for a slip ring and rotor lead cable according to claim 4, characterized in that: The first guide rod (4) is electrically connected to the first lead (11) at one end near the rotor via a connector (3), and the first lead (11) is electrically connected to the rotor lead (14) via a connector (3).

6. The installation structure for a slip ring and rotor lead cable according to claim 1, characterized in that: The end of the first guide rod (4) near the slip ring (2) is electrically connected to the second lead (17) through the connector (3), and the second lead (17) is electrically connected to the second guide rod (16) through the connector (3).

7. The installation structure for a slip ring and rotor lead-out cable according to claim 2 or 4, characterized in that: The connector (3) includes a copper wire lug (20), which is connected to each other by a conductive bolt (21) and a conductive nut (22).

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