Synchronous motor rotor outgoing line structure

Abstract

The utility model relates to the technical field of motor structure design, in particular to a synchronous motor rotor outgoing line structure. Comprising a Y-shaped wire embedding channel, a positive electrode lead-out wire unit and a negative electrode lead-out wire unit. The positive electrode lead-out wire unit and the negative electrode lead-out wire unit are embedded in the Y-shaped wire embedding channel; one end of the anode outgoing line unit is connected with the side surface of the excitation rotating shaft corresponding to the anode of the rotor winding, and the other end is connected with the anode of the collector ring or the rectifying disc; one end of the cathode leading-out wire unit is connected with the side surface of the excitation rotating shaft corresponding to the cathode of the rotor winding, and the other end is connected with the cathode of the collector ring or the rectification disc; the Y-shaped wire embedding channel is filled with pouring glue. Compared with the prior art, the technical scheme has the advantages that the overall structure is simplified, and the structure is more stable and reliable. In addition, the lead-out wire structure disclosed by the technical scheme is low in cost, simple in installation process and short in period.

Description

Technical Field

[0001] The utility model relates to the technical field of motor structure design, in particular to a synchronous motor rotor lead-out wire structure. Background Art

[0002] The direct current required for the synchronous motor to establish the rotor magnetic field needs to be transmitted from the excitation device collector ring to the rotor excitation winding through the rotor lead wire. Reliable connection of the rotor lead wire structure is the basis for safe and reliable operation of the motor.

[0003] At present, the rotor lead wire mainly includes the following structures:

[0004] 1) Conductive busbar structure. It is mainly composed of lead copper busbar, insulating wire clamp, conductive busbar, conductive fastening clamp, etc. The output of the positive and negative collector rings are respectively connected to the rotor coil through the lead copper busbar and the conductive busbar. In order to ensure that the lead copper busbar and the conductive busbar contact surface are reliably connected and conductive, the first fastening bolt + pressure plate is used for crimping. At the same time, considering the discharge distance requirements, the busbar is fixed to the end face of the shaft by insulating wire clamp. This structure is mainly suitable for vertical installation units such as water-generating units and horizontal installation (seat bearing) units. The excitation conduction is achieved by opening a lead groove on the surface of the shaft and laying a slot wedge, or by supporting the excitation busbar with many wire clamps on the surface of the shaft. This structure is only applicable to the internal collector ring structure, that is, the collector ring is located between the stator of the main motor and the excitation end bearing.

[0005] 2) Excitation cable structure. It is mainly composed of excitation cable, copper terminal and cable fixing block. The center hole of the excitation end shaft is processed, and an inclined hole penetrating the shaft surface is opened near the excitation winding. The excitation cable is laid in the hole, and copper terminals are crimped at both ends of the cable. The copper terminal at one end is connected to the excitation winding, and the other end is connected to the collector ring conductive rod. This structure is only suitable for low speed, small excitation current and small excitation cable.

[0006] 3) Conductive rod structure. It is mainly composed of lead copper busbar, lead screw, conductive screw, conductive rod assembly, etc. One end of the lead copper busbar is fixed to the end faces of the positive and negative collector rings respectively, and the other end is fixed to the conductive screw through the lead screw. The conductive screw and the conductive rod are screwed together through threads, and finally the conductive screw is radially fixed by the clamping nut. The conductive rod assembly consists of two halves of the conductive rod. The conductive rod is filled with an insulating plate, and the outer circle of the conductive rod is wrapped with insulation. It is processed to the required size after heat curing. This structure can meet the needs of high-speed and high-current application scenarios, but the production process is relatively complicated, the cycle is long, and the cost is high. Summary of the invention

[0007] The purpose of the utility model is to address the deficiencies of the above-mentioned prior art and to propose a synchronous motor rotor lead wire structure, which is as follows:

[0008] A synchronous motor rotor lead-out structure, characterized in that: it includes a Y-shaped buried wire channel, a positive lead-out unit and a negative lead-out unit; the Y-shaped buried wire channel includes a central channel, a positive pole ramp and a negative pole ramp; the central channel is opened from the end surface of the excitation shaft along the central axis of the excitation shaft; one end of the positive pole ramp is connected to the central channel, and the other end points to the positive pole of the rotor winding; one end of the negative pole ramp is connected to the central channel, and the other end points to the negative pole of the rotor winding; one end of the positive pole lead-out unit corresponds to the positive pole of the rotor winding , fixed on the side of the excitation shaft; the other end of the positive lead wire unit passes through the positive pole ramp and the center channel in sequence, and is fixed on the end face of the excitation shaft, and is connected to the positive pole of the collector ring or the positive pole of the rectifier disk; one end of the negative lead wire unit corresponds to the negative pole of the rotor winding and is fixed on the side of the excitation shaft; the other end of the negative lead wire unit passes through the negative pole ramp and the center channel in sequence, and is fixed on the end face of the excitation shaft, and is connected to the negative pole of the collector ring or the negative pole of the rectifier disk; the Y-shaped buried wire channel is filled with potting glue.

[0009] Preferably, the positive lead-out line unit and the negative lead-out line unit have the same structure, and both respectively include a first cable connector, a conductive busbar, an insulating wire clamp, a second cable connector and a plurality of excitation cables; the first cable connector is fixedly connected to the side of the excitation shaft; the conductive busbar is fixed to the end face of the excitation shaft through an insulating wire clamp, one end of the conductive busbar is connected to a collector ring or a rectifier disk, and the other end is connected to the second cable connector; all excitation cables are arranged in a Y-shaped buried wire channel, and both ends of all excitation cables pass through the Y-shaped buried wire channel and are respectively connected to the first cable connector and the second cable connector.

[0010] Preferably, the first cable connector comprises a first copper plate and the same number of DT-type copper terminals as the excitation cable; all DT-type copper terminals are brazed and fixed to the first copper plate, and a connector fixing hole is provided on the first copper plate.

[0011] Preferably, the second cable connector includes a busbar connection plate and the same number of cable connection rings as the excitation cables, and the cable connection rings are integrally formed with the busbar connection plate; a busbar connection hole is provided on the busbar connection plate.

[0012] Preferably, the conductive busbar is connected to the second cable connector via a fixing wire clamp; the fixing wire clamp comprises a first locking washer, a first fastening bolt and a locking pressure plate; the first fastening bolt passes through the first locking washer and the conductive busbar in sequence, and then passes through the busbar connecting hole on the second cable connector to be fastened to the locking pressure plate, so that the first locking washer, the conductive busbar, the busbar connecting plate and the locking pressure plate are tightly fitted in sequence.

[0013] Preferably, the second cable connector is made of copper plate.

[0014] Preferably, the insulating wire clamp includes a wire clamp base plate, a wire clamp cover plate, an insulating sleeve, a second locking washer and a second fastening bolt; the wire clamp base plate, the conductive busbar and the wire clamp cover plate are stacked in sequence on the end surface of the excitation shaft, and the insulating sleeve is vertically embedded in the wire clamp base plate, the conductive busbar and the wire clamp cover plate; the second fastening bolt passes through the second locking washer and the insulating sleeve in sequence, and is fastened to the excitation shaft, so that the second locking washer, the wire clamp cover plate, the conductive busbar, the wire clamp base plate and the excitation shaft are tightly fitted in sequence.

[0015] Preferably, the pouring glue is an AB component room temperature curing glue.

[0016] Beneficial technical effects brought by the utility model:

[0017] 1) The technical solution proposes a synchronous motor rotor lead-out wire structure, in which a Y-shaped buried wire channel is opened inside the excitation shaft for laying the lead-out wire unit. The Y-shaped buried wire channel is filled with a potting glue to fix the Y-shaped buried wire channel. Compared with the existing conductive busbar structure, the use of insulating wire clamps and wiring fastening clamps is greatly reduced, and the structure is simplified while being more stable and reliable.

[0018] 2) The technical solution proposes a synchronous motor rotor lead-out wire structure, which takes the excitation cable and the conductive busbar as the main components and can be installed by equipping an appropriate number of cable connectors, insulating wire clamps and fastening wire clamps. Compared with the existing conductive rod structure, it reduces the number of components and has a simpler structure.

[0019] 3) The synchronous motor rotor lead wire structure proposed in this technical solution is easy to manufacture and has a short production cycle. Specifically, compared with the installation process of the existing conductive rod structure (i.e., it is necessary to purchase the raw materials of the chromium bronze rod, divide it into two pieces, and then process it according to the requirements, silver-plated, and wrapped with insulation according to the insulation specifications, heat-baked and cured, and then processed to the required size, and the conductive rod structure has more and more complicated processes), the installation process of this technical solution only includes the production and installation of cable threading, glue filling, and other small parts, with a shorter procurement and production cycle and easier operation.

[0020] 4) Compared with the existing conductive rod structure, the material cost and production cost of this technical solution are greatly reduced.

[0021] 5) The synchronous motor rotor lead wire structure proposed in this technical solution has high reliability and wide application range. Specifically, compared with the existing excitation lead wire structure (limited by the minimum allowable bending radius of the excitation cable, it is only applicable to occasions with small excitation current and small cable cross-section, and there are problems such as unstable cable fixation), the entire lead wire structure of this technical solution is reliably fixed, and the number and size of the excitation cables can be adjusted according to the excitation current. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a synchronous motor rotor lead wire connected to a rectifier disk;

[0023] Figure 2 A schematic diagram of a synchronous motor rotor lead-out wire structure connected to a collector ring;

[0024] Figure 3 for Figure 1 and Figure 2 Schematic diagram of the end face structure of the excitation shaft in the middle K direction;

[0025] Figure 4 is a schematic diagram of the back structure of the first cable connector;

[0026] Figure 5 is a schematic diagram of the side structure of the first cable connector;

[0027] Figure 6 is a schematic diagram of the installation structure of the second cable connector and the fastening wire clamp;

[0028] Figure 7 This is a schematic diagram of the installation structure of the insulating wire clamp.

[0029] In the figure:

[0030] 1. Y-shaped buried wire channel; 1.1. Center channel; 1.2. Positive pole ramp; 1.3. Negative pole ramp; 2. Positive pole lead wire unit; 3. Negative pole lead wire unit; 4. Potting glue; 5. Rotor winding; 6. Excitation shaft; 6.1. End face; 7. Collector ring; 8. Rectifier disk; 9. First cable connector; 9.1. First copper plate; 9.2. DT type copper terminal; 9.3. Connector fixing hole; 9.4. Bolt; 10. Conductive busbar; 11 , insulating wire clamp; 11.1, wire clamp base plate; 11.2, wire clamp cover plate; 11.3, insulating sleeve; 11.4, second locking washer; 11.5, second fastening bolt; 12, second cable connector; 12.1, busbar connection plate; 12.2, cable connection ring; 12.3, busbar connection hole; 13, excitation cable; 14, fastening wire clamp; 14.1, first locking washer; 14.2, first fastening bolt; 14.3, locking pressure plate. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments.

[0032] Therefore, the following detailed description of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0033] Example 1

[0034] This embodiment discloses a synchronous motor rotor lead wire structure as a preferred implementation scheme of the utility model. Figure 1 As shown, it includes a Y-shaped buried wire channel 1, a positive lead wire unit 2 and a negative lead wire unit 3.

[0035] The Y-shaped buried wire channel 1 includes a central channel 1.1, a positive pole ramp 1.2 and a negative pole ramp 1.3; the central channel 1.1 is opened from the end face 6.1 of the excitation shaft 6 along the central axis of the excitation shaft 6; one end of the positive pole ramp 1.2 is connected to the central channel 1.1, and the other end points to the positive pole of the rotor winding 5; one end of the negative pole ramp 1.3 is connected to the central channel 1.1, and the other end points to the negative pole of the rotor winding 5.

[0036] One end of the positive lead wire unit 2 corresponds to the positive pole of the rotor winding 5 and is fixed to the side of the excitation shaft 6; the other end of the positive lead wire unit 2 passes through the positive pole ramp 1.2 and the center channel 1.1 in sequence, is fixed to the end face 6.1 of the excitation shaft 6, and is connected to the positive pole of the collector ring 7 or the positive pole of the rectifier disk 8.

[0037] One end of the negative lead wire unit 3 corresponds to the negative pole of the rotor winding 5 and is fixed to the side of the excitation shaft 6; the other end of the negative lead wire unit 3 passes through the negative pole ramp 1.3 and the center channel 1.1 in sequence, is fixed to the end face 6.1 of the excitation shaft 6, and is connected to the negative pole of the collector ring 7 or the negative pole of the rectifier disk 8.

[0038] The Y-shaped wire embedding channel 1 is filled with a perfusion glue 4 .

[0039] Example 2

[0040] This embodiment discloses a synchronous motor rotor lead wire structure as a preferred implementation scheme of the utility model. Figure 1 and Figure 2 As shown, it includes a Y-shaped buried wire channel 1, a positive lead wire unit 2 and a negative lead wire unit 3.

[0041] The Y-shaped buried wire channel 1 includes a central channel 1.1, a positive pole ramp 1.2 and a negative pole ramp 1.3; the central channel 1.1 is opened from the end face 6.1 of the excitation shaft 6 along the central axis of the excitation shaft 6; one end of the positive pole ramp 1.2 is connected to the central channel 1.1, and the other end points to the positive pole of the rotor winding 5; one end of the negative pole ramp 1.3 is connected to the central channel 1.1, and the other end points to the negative pole of the rotor winding 5.

[0042] One end of the positive lead wire unit 2 corresponds to the positive pole of the rotor winding 5 and is fixed to the side of the excitation shaft 6; the other end of the positive lead wire unit 2 passes through the positive pole ramp 1.2 and the center channel 1.1 in sequence, is fixed to the end face 6.1 of the excitation shaft 6, and is connected to the positive pole of the collector ring 7 or the positive pole of the rectifier disk 8.

[0043] One end of the negative lead wire unit 3 corresponds to the negative pole of the rotor winding 5 and is fixed to the side of the excitation shaft 6; the other end of the negative lead wire unit 3 passes through the negative pole ramp 1.3 and the center channel 1.1 in sequence, is fixed to the end face 6.1 of the excitation shaft 6, and is connected to the negative pole of the collector ring 7 or the negative pole of the rectifier disk 8.

[0044] The Y-shaped wire embedding channel 1 is filled with a perfusion glue 4 .

[0045] Furthermore, the positive lead-out unit 2 and the negative lead-out unit 3 have the same structure, and both include a first cable connector 9, a conductive busbar 10, an insulating wire clamp 11, a second cable connector 12, and a plurality of excitation cables 13. The first cable connector 9 is fixedly connected to the side of the excitation shaft 6; the conductive busbar 10 is fixed to the end face 6.1 of the excitation shaft 6 through the insulating wire clamp 11, one end of the conductive busbar 10 is connected to the collector ring 7 or the rectifier disk 8, and the other end is connected to the second cable connector 12. All excitation cables 13 are arranged in the Y-shaped buried wire channel 1, and both ends of all excitation cables 13 pass through the Y-shaped buried wire channel 1, and are respectively connected to the first cable connector 9 and the second cable connector 12.

[0046] Among them, silicone rubber insulated motor lead wires can be selected as excitation cables 13, and the number of excitation cables 13 is adjusted according to the size of the motor current. When there are multiple excitation cables 13 in both the positive lead wire unit 2 and the negative lead wire unit 3, before burying the excitation cables 13, in order to avoid two cables of the same coil being connected to the positive and negative poles at the same time or two cables connected to the positive pole being connected to different coils respectively, the cables must be clearly marked for construction, and a margin is left for the cable extension length to facilitate later trimming. In addition, before filling the potting glue 4, it is necessary to determine the arrangement of the excitation cables 13 in the central channel 1.1 according to the orientation of the positive and negative conductive busbars 10 on the rectifier disk 8 or the collector ring 7, and temporarily fix the excitation cables 13 with external tooling.

[0047] Example 3

[0048] This embodiment discloses a synchronous motor rotor lead wire structure as a preferred implementation scheme of the utility model. Figure 1 and Figure 2 As shown, it includes a Y-shaped buried wire channel 1, a positive lead wire unit 2 and a negative lead wire unit 3.

[0049] The Y-shaped buried wire channel 1 includes a central channel 1.1, a positive pole ramp 1.2 and a negative pole ramp 1.3; the central channel 1.1 is opened from the end face 6.1 of the excitation shaft 6 along the central axis of the excitation shaft 6; one end of the positive pole ramp 1.2 is connected to the central channel 1.1, and the other end points to the positive pole of the rotor winding 5; one end of the negative pole ramp 1.3 is connected to the central channel 1.1, and the other end points to the negative pole of the rotor winding 5.

[0050] One end of the positive lead wire unit 2 corresponds to the positive pole of the rotor winding 5 and is fixed to the side of the excitation shaft 6; the other end of the positive lead wire unit 2 passes through the positive pole ramp 1.2 and the center channel 1.1 in sequence, is fixed to the end face 6.1 of the excitation shaft 6, and is connected to the positive pole of the collector ring 7 or the positive pole of the rectifier disk 8.

[0051] One end of the negative lead wire unit 3 corresponds to the negative pole of the rotor winding 5 and is fixed to the side of the excitation shaft 6; the other end of the negative lead wire unit 3 passes through the negative pole ramp 1.3 and the center channel 1.1 in sequence, is fixed to the end face 6.1 of the excitation shaft 6, and is connected to the negative pole of the collector ring 7 or the negative pole of the rectifier disk 8.

[0052] The Y-shaped wire embedding channel 1 is filled with a perfusion glue 4 .

[0053] Furthermore, the positive lead-out unit 2 and the negative lead-out unit 3 have the same structure, and both include a first cable connector 9, a conductive busbar 10, an insulating wire clamp 11, a second cable connector 12, and a plurality of excitation cables 13. The first cable connector 9 is fixedly connected to the side of the excitation shaft 6; the conductive busbar 10 is fixed to the end face 6.1 of the excitation shaft 6 through the insulating wire clamp 11, one end of the conductive busbar 10 is connected to the collector ring 7 or the rectifier disk 8, and the other end is connected to the second cable connector 12. All excitation cables 13 are arranged in the Y-shaped buried wire channel 1, and both ends of all excitation cables 13 pass through the Y-shaped buried wire channel 1, and are respectively connected to the first cable connector 9 and the second cable connector 12.

[0054] Furthermore, the first cable connector 9 includes a first copper plate 9.1 and the same number of DT-type copper terminals 9.2 as the excitation cables 13; all DT-type copper terminals 9.2 are brazed and fixed to the first copper plate 9.1, and a connector fixing hole 9.3 is provided on the first copper plate 9.1. That is, when making the first cable connector 9, the number of excitation cables 13 is first determined, and then the same number of DT-type copper terminals 9.2 are brazed side by side with the first copper plate 9.1 as a whole, and finally the first cable connector 9 is tinned as a whole to improve its conductive performance. When installing the first cable connector 9, a bolt 9.4 can be used to pass through the connector fixing hole 9.3 to fix the first cable connector 9 as a whole to the side of the excitation shaft 6.

[0055] Example 4

[0056] This embodiment discloses a synchronous motor rotor lead wire structure as a preferred implementation scheme of the utility model. Figure 1 and Figure 2 As shown, it includes a Y-shaped buried wire channel 1, a positive lead wire unit 2 and a negative lead wire unit 3.

[0057] The Y-shaped buried wire channel 1 includes a central channel 1.1, a positive pole ramp 1.2 and a negative pole ramp 1.3; the central channel 1.1 is opened from the end face 6.1 of the excitation shaft 6 along the central axis of the excitation shaft 6; one end of the positive pole ramp 1.2 is connected to the central channel 1.1, and the other end points to the positive pole of the rotor winding 5; one end of the negative pole ramp 1.3 is connected to the central channel 1.1, and the other end points to the negative pole of the rotor winding 5.

[0058] One end of the positive lead wire unit 2 corresponds to the positive pole of the rotor winding 5 and is fixed to the side of the excitation shaft 6; the other end of the positive lead wire unit 2 passes through the positive pole ramp 1.2 and the center channel 1.1 in sequence, is fixed to the end face 6.1 of the excitation shaft 6, and is connected to the positive pole of the collector ring 7 or the positive pole of the rectifier disk 8.

[0059] One end of the negative lead wire unit 3 corresponds to the negative pole of the rotor winding 5 and is fixed to the side of the excitation shaft 6; the other end of the negative lead wire unit 3 passes through the negative pole ramp 1.3 and the center channel 1.1 in sequence, is fixed to the end face 6.1 of the excitation shaft 6, and is connected to the negative pole of the collector ring 7 or the negative pole of the rectifier disk 8.

[0060] The Y-shaped wire embedding channel 1 is filled with a perfusion glue 4 .

[0061] Furthermore, the positive lead-out unit 2 and the negative lead-out unit 3 have the same structure, and both include a first cable connector 9, a conductive busbar 10, an insulating wire clamp 11, a second cable connector 12, and a plurality of excitation cables 13. The first cable connector 9 is fixedly connected to the side of the excitation shaft 6; the conductive busbar 10 is fixed to the end face 6.1 of the excitation shaft 6 through the insulating wire clamp 11, one end of the conductive busbar 10 is connected to the collector ring 7 or the rectifier disk 8, and the other end is connected to the second cable connector 12. All excitation cables 13 are arranged in the Y-shaped buried wire channel 1, and both ends of all excitation cables 13 pass through the Y-shaped buried wire channel 1, and are respectively connected to the first cable connector 9 and the second cable connector 12.

[0062] Furthermore, the second cable connector 12 includes a busbar connector plate 12.1 and the same number of cable connector rings 12.2 as the number of excitation cables 13, and the cable connector rings 12.2 are integrally formed with the busbar connector plate 12.1; a busbar connection hole 12.3 is provided on the busbar connector plate 12.1. Based on this structure, when the second cable connector 12 is connected to the excitation cable 13, the wire cores of the excitation cable 13 can be inserted into the cable connector rings 12.2 one by one, and then the wire cores of the excitation cable 13 and the corresponding cable connector rings 12.2 are brazed into one with copper-based solder and silver solder.

[0063] Furthermore, the second cable connector 12 is made of a copper plate. Specifically, a copper plate is cut and bent to have a flat plate (i.e., busbar connection plate 12.1) and a ring (cable connection ring 12.2), and then a hole (busbar connection hole 12.3) is punched on the flat plate. After the second cable connector 12 is formed, the whole is tinned. Finally, the central axis of the busbar connection hole 12.3 is perpendicular to the central axis of the cable connection ring 12.2, and this structure meets the relative position conditions of the excitation cable 13 and the conductive busbar 10.

[0064] Example 5

[0065] This embodiment discloses a synchronous motor rotor lead wire structure as a preferred implementation scheme of the utility model. Figure 1 and Figure 2 As shown, it includes a Y-shaped buried wire channel 1, a positive lead wire unit 2 and a negative lead wire unit 3.

[0066] The Y-shaped buried wire channel 1 includes a central channel 1.1, a positive pole ramp 1.2 and a negative pole ramp 1.3; the central channel 1.1 is opened from the end face 6.1 of the excitation shaft 6 along the central axis of the excitation shaft 6; one end of the positive pole ramp 1.2 is connected to the central channel 1.1, and the other end points to the positive pole of the rotor winding 5; one end of the negative pole ramp 1.3 is connected to the central channel 1.1, and the other end points to the negative pole of the rotor winding 5.

[0067] One end of the positive lead wire unit 2 corresponds to the positive pole of the rotor winding 5 and is fixed to the side of the excitation shaft 6; the other end of the positive lead wire unit 2 passes through the positive pole ramp 1.2 and the center channel 1.1 in sequence, is fixed to the end face 6.1 of the excitation shaft 6, and is connected to the positive pole of the collector ring 7 or the positive pole of the rectifier disk 8.

[0068] One end of the negative lead wire unit 3 corresponds to the negative pole of the rotor winding 5 and is fixed to the side of the excitation shaft 6; the other end of the negative lead wire unit 3 passes through the negative pole ramp 1.3 and the center channel 1.1 in sequence, is fixed to the end face 6.1 of the excitation shaft 6, and is connected to the negative pole of the collector ring 7 or the negative pole of the rectifier disk 8.

[0069] The Y-shaped wire embedding channel 1 is filled with a perfusion glue 4 .

[0070] Furthermore, the positive lead-out unit 2 and the negative lead-out unit 3 have the same structure, and both include a first cable connector 9, a conductive busbar 10, an insulating wire clamp 11, a second cable connector 12, and a plurality of excitation cables 13. The first cable connector 9 is fixedly connected to the side of the excitation shaft 6; the conductive busbar 10 is fixed to the end face 6.1 of the excitation shaft 6 through the insulating wire clamp 11, one end of the conductive busbar 10 is connected to the collector ring 7 or the rectifier disk 8, and the other end is connected to the second cable connector 12. All excitation cables 13 are arranged in the Y-shaped buried wire channel 1, and both ends of all excitation cables 13 pass through the Y-shaped buried wire channel 1, and are respectively connected to the first cable connector 9 and the second cable connector 12.

[0071] Furthermore, the second cable connector 12 includes a busbar connecting plate 12.1 and the same number of cable connecting rings 12.2 as the number of excitation cables 13, and the cable connecting rings 12.2 and the busbar connecting plate 12.1 are integrally formed.

[0072] Furthermore, the conductive busbar 10 is made of copper busbar, and the bent part is required to be free of cracks, and the bent part is qualified by PT flaw detection according to JB4730 standard. In order to avoid damage to the conductive busbar 10, the conductive busbar 10 is connected to the second cable connector 12 through a fastening clamp 14. The fastening clamp 14 includes a first locking washer 14.1, a first fastening bolt 14.2 and a locking pressure plate 14.3; the first fastening bolt 14.2 passes through the first locking washer 14.1 and the conductive busbar 10 in turn, and then passes through the busbar connection hole 12.3 on the second cable connector 12, and is fastened to the locking pressure plate 14.3, so that the first locking washer 14.1, the conductive busbar 10, the busbar connection plate 12.1 and the locking pressure plate 14.3 are tightly fitted in turn.

[0073] In this way, when installing the conductive busbar 10, first adjust the position of the conductive busbar 10, then install and fix one end of the conductive busbar 10 to the collector ring 7 (collector ring) or the rectifier disk 8, and fix the other end to the second cable connector 12 at the end of the excitation cable 13 with a fastening wire clamp 14, and finally fix the conductive busbar 10 to the end face 6.1 of the excitation shaft 6 through the insulating wire clamp 11.

[0074] Example 6

[0075] This embodiment discloses a synchronous motor rotor lead wire structure as a preferred implementation scheme of the utility model. Figure 1 and Figure 2 As shown, it includes a Y-shaped buried wire channel 1, a positive lead wire unit 2 and a negative lead wire unit 3.

[0076] The Y-shaped buried wire channel 1 includes a central channel 1.1, a positive pole ramp 1.2 and a negative pole ramp 1.3; the central channel 1.1 is opened from the end face 6.1 of the excitation shaft 6 along the central axis of the excitation shaft 6; one end of the positive pole ramp 1.2 is connected to the central channel 1.1, and the other end points to the positive pole of the rotor winding 5; one end of the negative pole ramp 1.3 is connected to the central channel 1.1, and the other end points to the negative pole of the rotor winding 5.

[0077] One end of the positive lead wire unit 2 corresponds to the positive pole of the rotor winding 5 and is fixed to the side of the excitation shaft 6; the other end of the positive lead wire unit 2 passes through the positive pole ramp 1.2 and the center channel 1.1 in sequence, is fixed to the end face 6.1 of the excitation shaft 6, and is connected to the positive pole of the collector ring 7 or the positive pole of the rectifier disk 8.

[0078] One end of the negative lead wire unit 3 corresponds to the negative pole of the rotor winding 5 and is fixed to the side of the excitation shaft 6; the other end of the negative lead wire unit 3 passes through the negative pole ramp 1.3 and the center channel 1.1 in sequence, is fixed to the end face 6.1 of the excitation shaft 6, and is connected to the negative pole of the collector ring 7 or the negative pole of the rectifier disk 8.

[0079] The Y-shaped wire embedding channel 1 is filled with a potting glue 4. Preferably, the potting glue 4 is an AB component room temperature curing glue, and it can be ensured that it has thermal toughness and anti-aging properties after filling by simply adjusting the ratio.

[0080] Furthermore, the positive lead-out unit 2 and the negative lead-out unit 3 have the same structure, and both include a first cable connector 9, a conductive busbar 10, an insulating wire clamp 11, a second cable connector 12 and a plurality of excitation cables 13. The first cable connector 9 is fixedly connected to the side of the excitation shaft 6; the conductive busbar 10 is fixed to the end face 6.1 of the excitation shaft 6 by the insulating wire clamp 11, one end of the conductive busbar 10 is connected to the collector ring 7 or the rectifier disk 8, and the other end is connected to the second cable connector 12. All excitation cables 13 are arranged in the Y-shaped buried wire channel 1, and both ends of all excitation cables 13 pass through the Y-shaped buried wire channel 1, and are respectively connected to the first cable connector 9 and the second cable connector 12. Among them, the number of excitation cables 13 can be adjusted according to the size of the motor current. For example, the technical solution can set the number of excitation cables 13 to two, with a total of four positive and negative cables.

[0081] Furthermore, the first cable connector 9 includes a first copper plate 9.1 and the same number of DT-type copper terminals 9.2 as the excitation cable 13; all DT-type copper terminals 9.2 are brazed and fixed on the first copper plate 9.1, and a connector fixing hole 9.3 is provided on the first copper plate 9.1. In order to avoid the excitation cable 13 from being excessively bent when connected to the first cable connector 9, the DT-type copper terminal 9.2 is bent, and the bending angle is α, and the size of α can be adjusted according to the actual layout structure of the lead-out structure, such as the technical solution can make α=135°.

[0082] Furthermore, the second cable connector 12 includes a busbar connection plate 12.1 and the same number of cable connection rings 12.2 as the excitation cables 13, and the cable connection rings 12.2 are integrally formed with the busbar connection plate 12.1; the busbar connection plate 12.1 is provided with a busbar connection hole 12.3. More specifically, the second cable connector 12 is made of copper plate.

[0083] Based on the above structure, when installing the conductive busbar 10, first adjust the position of the conductive busbar 10, then install and fix one end of the conductive busbar 10 to the collector ring 7 (collector ring) or the rectifier disk 8, and fix the other end to the second cable connector 12 at the end of the excitation cable 13 with a fastening wire clamp 14, and finally fix the conductive busbar 10 to the end face 6.1 of the excitation shaft 6 through the insulating wire clamp 11.

[0084] Among them, the conductive busbar 10 is connected to the second cable connector 12 through a fastening clamp 14; the fastening clamp 14 includes a first locking washer 14.1, a first fastening bolt 14.2 and a locking pressure plate 14.3; the first fastening bolt 14.2 passes through the first locking washer 14.1 and the conductive busbar 10 in sequence, passes through the busbar connecting hole 12.3 on the second cable connector 12, and is fastened to the locking pressure plate 14.3, so that the first locking washer 14.1, the conductive busbar 10, the busbar connecting plate 12.1 and the locking pressure plate 14.3 are tightly fitted in sequence.

[0085] Furthermore, the insulating wire clamp 11 includes a wire clamp base plate 11.1, a wire clamp cover plate 11.2, an insulating sleeve 11.3, a second locking washer 11.4 and a second fastening bolt 11.5; the wire clamp base plate 11.1, the conductive busbar 10 and the wire clamp cover plate 11.2 are stacked on the end face 6.1 of the excitation shaft 6 in sequence, and the insulating sleeve 11.3 is vertically embedded in the wire clamp base plate 11.1, the conductive busbar 10 and the wire clamp cover plate 11.2; the second fastening bolt 11.5 passes through the second locking washer 11.4 and the insulating sleeve 11.3 in sequence, and is fastened to the excitation shaft 6, so that the second locking washer 11.4, the wire clamp cover plate 11.2, the conductive busbar 10, the wire clamp base plate 11.1 and the excitation shaft 6 are tightly fitted in sequence. Based on the structure of the insulating wire clamp 11 , it is possible to fix the conductive busbars 10 rows overhead to the end surface 6 . 1 of the excitation shaft 6 .

Claims

1. A synchronous motor rotor lead wire structure, characterized in that: It comprises a Y-shaped wire embedding channel (1), a positive electrode lead wire unit (2) and a negative electrode lead wire unit (3); The Y-shaped buried wire channel (1) comprises a central channel (1.1), a positive pole ramp (1.2) and a negative pole ramp (1.3); the central channel (1.1) is opened from the end surface (6.1) of the excitation shaft (6) along the central axis of the excitation shaft (6); one end of the positive pole ramp (1.2) is connected to the central channel (1.1), and the other end points to the positive pole of the rotor winding (5); one end of the negative pole ramp (1.3) is connected to the central channel (1.1), and the other end points to the negative pole of the rotor winding (5); One end of the positive lead wire unit (2) corresponds to the positive pole of the rotor winding (5) and is fixed to the side of the excitation shaft (6); the other end of the positive lead wire unit (2) passes through the positive pole ramp (1.2) and the central channel (1.1) in sequence, is fixed to the end surface (6.1) of the excitation shaft (6), and is connected to the positive pole of the collector ring (7) or the positive pole of the rectifier disk (8); One end of the negative lead wire unit (3) corresponds to the negative pole of the rotor winding (5) and is fixed to the side of the excitation shaft (6); the other end of the negative lead wire unit (3) passes through the negative pole ramp (1.3) and the central channel (1.1) in sequence, is fixed to the end surface (6.1) of the excitation shaft (6), and is connected to the negative pole of the collector ring (7) or the negative pole of the rectifier disk (8); The Y-shaped wire embedding channel (1) is filled with a perfusion glue (4).

2. A synchronous motor rotor lead wire structure as claimed in claim 1, characterized in that: The positive lead wire unit (2) and the negative lead wire unit (3) have the same structure, and both respectively comprise a first cable connector (9), a conductive busbar (10), an insulating wire clamp (11), a second cable connector (12), and a plurality of excitation cables (13); The first cable connector (9) is fixedly connected to the side of the excitation shaft (6); the conductive busbar (10) is fixed to the end face (6.1) of the excitation shaft (6) via an insulating wire clamp (11); one end of the conductive busbar (10) is connected to a collector ring (7) or a rectifier disk (8), and the other end is connected to a second cable connector (12); All the excitation cables (13) are arranged in the Y-shaped buried cable channel (1), and both ends of all the excitation cables (13) pass through the Y-shaped buried cable channel (1) and are respectively connected to the first cable connector (9) and the second cable connector (12).

3. A synchronous motor rotor lead wire structure as claimed in claim 2, characterized in that: The first cable joint (9) comprises a first copper plate (9.1) and the same number of DT-type copper terminals (9.2) as the number of excitation cables (13); all DT-type copper terminals (9.2) are brazed and fixed to the first copper plate (9.1), and a joint fixing hole (9.3) is provided on the first copper plate (9.1).

4. A synchronous motor rotor lead wire structure as claimed in claim 2, characterized in that: The second cable connector (12) comprises a busbar connection plate (12.1) and the same number of cable connection rings (12.2) as the number of excitation cables (13), wherein the cable connection rings (12.2) and the busbar connection plate (12.1) are integrally formed; and a busbar connection hole (12.3) is provided on the busbar connection plate (12.1).

5. A synchronous motor rotor lead wire structure as claimed in claim 4, characterized in that: The conductive busbar (10) is connected to the second cable connector (12) via a fastening clamp (14); the fastening clamp (14) comprises a first locking washer (14.1), a first fastening bolt (14.2) and a locking pressure plate (14.3); the first fastening bolt (14.2) passes through the first locking washer (14.1) and the conductive busbar (10) in sequence, and then passes through the busbar connection hole (12.3) on the second cable connector (12) to be fastened to the locking pressure plate (14.3), so that the first locking washer (14.1), the conductive busbar (10), the busbar connection plate (12.1) and the locking pressure plate (14.3) are tightly fitted in sequence.

6. A synchronous motor rotor lead wire structure as claimed in claim 4, characterized in that: The second cable connector (12) is made of a copper plate.

7. A synchronous motor rotor lead wire structure as claimed in claim 2, characterized in that: The insulating wire clamp (11) comprises a wire clamp base plate (11.1), a wire clamp cover plate (11.2), an insulating sleeve (11.3), a second locking washer (11.4) and a second fastening bolt (11.5); the wire clamp base plate (11.1), the conductive busbar (10) and the wire clamp cover plate (11.2) are sequentially stacked on the end surface (6.1) of the excitation shaft (6), and the insulating sleeve (11.3) is vertically embedded in the wire clamp base plate. (11.1), the conductive busbar (10) and the inside of the wire clamp cover plate (11.2); the second fastening bolt (11.5) passes through the second locking washer (11.4) and the insulating sleeve (11.3) in sequence, and is fastened to the excitation shaft (6), so that the second locking washer (11.4), the wire clamp cover plate (11.2), the conductive busbar (10), the wire clamp base plate (11.1) and the excitation shaft (6) are tightly fitted in sequence.

8. A synchronous motor rotor lead wire structure as claimed in claim 1, characterized in that: The pouring glue (4) is an AB component room temperature curing glue.

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