CN210536376U - Support structure for hooping winding end of tower-shaped coil of rotor - Google Patents

Abstract

The utility model discloses a bearing structure that is used for rotor tower-shaped coil winding tip to beat hoop has solved current three-phase brushless synchronous generator rotor coil tip and has beaten hoop and cause winding interelectrode line and heavy line intersection to appear damaged problem easily. The winding end part annular support frame (2) is sleeved with an insulating support ring (3), the outer circle surface of the insulating support ring is respectively provided with an interelectrode connecting wire embedding arc-shaped groove (11), an interheavy connecting wire embedding arc-shaped groove (12), an anode lead embedding arc-shaped groove (13) and a cathode lead embedding arc-shaped groove (14), the interelectrode connecting wire (6) is embedded into the interelectrode connecting wire embedding arc-shaped groove, an interheavy connecting wire (7) is embedded into the interheavy connecting wire embedding arc-shaped groove (12), coil anode leads (8) are respectively embedded into respective lead embedding arc-shaped grooves, and the outer circle of a winding end part (4) is hooped with a winding end part outer circle fixing hoop (5). So that the hoop stress of the winding end part is uniform.

Description

Support structure for hooping winding end of tower-shaped coil of rotor

Technical Field

The utility model relates to an excitation winding of embedding on middle-size and small-size three-phase brushless synchronous generator rotor core, in particular to hoop the bearing structure who handles to excitation winding's winding overhang.

Background

An excitation winding is embedded in a rotor iron core of a small and medium-sized three-phase brushless synchronous generator and mainly used for generating an air gap magnetic field of the generator, the excitation winding is composed of a concentric heavy coil and an inter-pole connecting line, the concentric heavy coil is generally three to six, and the heavy coil is formed by winding flat copper wires; the tower-shaped coils are embedded into the rotor core slots to form a magnetic pole, the number of the tower-shaped coils embedded into the rotor is generally set corresponding to the magnetic pole of the rotor, the tower-shaped coils embedded into the rotor wire embedding slots are sequentially connected in series end to end, and two pole leads are led out after the tower-shaped coils are connected in series to be connected with an exciter. The rotor wire embedding of the tower-shaped coil is carried out according to the following steps: embedding a first rewinding group of a tower-shaped coil into a corresponding groove on a rotor core, arranging a connection line between two rewinds of the first rewinding group at the outer side of the end face of the rotor core, then embedding a second rewinding group, arranging the connection line between two rewinds of the second rewinding group at the outer side of the end face of the rotor core, welding and connecting the connection line between two rewinds of the first rewinding group and the second rewinding group together, and carrying out insulation treatment; according to the method, embedding and connecting of the multiple windings of the tower-shaped coil are sequentially completed, and finally, the wire embedding work of the tower-shaped coil is completed; after the coil inserting of the rotor coil is finished, the end part of the first rewinding group is arranged on the outer side of the end surface of the iron core, the second rewinding group is arranged on the outer side of the end part of the first rewinding group, the end parts of the last rewinding groups sequentially extend outwards along the direction departing from the end surface of the iron core, a winding end part coil frame is fixedly arranged on a rotor shaft on the inner side of the winding end part, a U-shaped steel hoop is fixedly arranged on the coil frame respectively, the coil end part of each rewinding group is fixed with the coil frame through the U-shaped steel hoop, so that the winding end part is prevented from being loosened and broken under the action of centrifugal force when the rotor rotates at high speed, after the coil inserting of the rotor coil is finished, the outer circle of the winding end part is subjected to hoop processing, the winding end parts are fixed into a whole, so as to resist the action of centrifugal force, and because the inter-pole connecting lines and the inter-weight connecting lines are mutually staggered on the, The wiring arrangement is uneven and neat, when hoop-forming is carried out on the excircle of the end part of the winding, hoop-forming pressure can be applied to the direction of a rotating shaft of the motor, the phenomena that inter-pole connection lines, heavy inter-pole connection lines and lead wire intersections are easy to damage, and inter-turn short circuit is directly caused, and meanwhile, when a bottom hoop is formed on a non-weft tape site, collapse of some winding end parts is often caused, so that a ventilation duct of a rotor is blocked, and the temperature rise of the motor is influenced.

Disclosure of Invention

The utility model provides a bearing structure that is used for rotor tower-shaped coil winding tip to beat hoop has solved current three-phase brushless synchronous generator rotor coil tip and has beaten hoop and cause winding interelectrode line and heavy line intersection to appear damaged technical problem easily.

The utility model discloses a solve above technical problem through following technical scheme:

a supporting structure for hooping the winding end of tower-shaped rotor coil is composed of a rotary shaft, a rotor coil consisting of serially connected tower-shaped coils, serially connected tower-shaped coils consisting of concentric multiple windings, inter-electrode connecting lines between tower-shaped coils, multiple connecting lines between multiple windings, positive and negative coil leads, an annular winding end supporter fixed to rotary shaft, an U-shaped fixture for fixing the multiple windings, an insulating supporting ring sleeved on said annular winding end supporter, arc slots embedded in the inter-electrode connecting lines and arc slots embedded in the inter-electrode connecting lines, and a supporting ring for fixing the inter-electrode connecting lines and U-shaped fixture The positive electrode lead is embedded into the arc-shaped groove, the negative electrode lead is embedded into the arc-shaped groove, the interelectrode connecting wire is embedded into the interelectrode connecting wire embedded into the arc-shaped groove, the inter-heavy connecting wire is embedded into the inter-heavy connecting wire embedded into the arc-shaped groove, the coil positive electrode lead is embedded into the positive electrode lead embedded into the arc-shaped groove, the coil negative electrode lead is embedded into the negative electrode lead embedded into the arc-shaped groove, and a winding end part excircle fixing hoop is hooped on an excircle of the winding end.

The depth of the interelectrode connecting wire embedded into the arc-shaped groove is the same as the height of the interelectrode connecting wire, the depth of the anode lead embedded into the arc-shaped groove is the same as the height of the anode lead of the coil, and the depth of the cathode lead embedded into the arc-shaped groove is the same as the height of the cathode lead of the coil.

The utility model discloses compare with traditional rotor winding embedding coil former, can make interelectrode line, line and lead wire imbed effectively between heavily, the line does not occupy tip electromagnetic wire space with the lead wire, tip electromagnetic wire evenly distributed makes the inboard arc surface of whole winding head level and smooth, when hooping, whole winding head is evenly supported by the insulating ring, it is even to make winding head hoop atress, thereby avoided turn-to-turn short circuit phenomenon and tip radial ventilation way to occupy the phenomenon and take place, and can accomplish the tip hoop back outward appearance pleasing to the eye.

Drawings

Fig. 1 is a schematic view of a support structure for a rotor tower-shaped coil winding end portion according to the present invention;

fig. 2 is a schematic structural diagram of the insulating support ring 3 of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

a supporting structure for hooping the winding end part of a tower-shaped coil of a rotor comprises a rotating shaft 1, a rotor coil and a winding end part outer circle fixing hoop 5, wherein the rotor coil is formed by serially connecting tower-shaped coils, the tower-shaped coils are formed by serially connecting concentric heavy windings, interelectrode connecting wires 6 are arranged among the tower-shaped coils, the heavy windings are provided with the heavy connecting wires 7, the rotor coil is provided with a coil anode lead 8 and a coil cathode lead 9, the rotating shaft 1 is fixedly provided with a winding end part annular supporting frame 2, the winding end part annular supporting frame 2 is fixedly provided with an interelectrode winding fixing U-shaped clamp 10, the winding end part 4 of the heavy winding is arranged in the heavy winding fixing U-shaped clamp 10, the winding end part annular supporting frame 2 is sleeved with an insulating supporting ring 3, and the surface of the outer circle of the insulating supporting ring 3 is respectively provided with an interelectrode connecting wire embedding arc-shaped groove 11, The inter-pole connecting wire is embedded into the arc-shaped groove 12, the anode lead is embedded into the arc-shaped groove 13 and the cathode lead is embedded into the arc-shaped groove 14, the inter-pole connecting wire 6 is embedded into the inter-pole connecting wire embedded into the arc-shaped groove 11, the inter-pole connecting wire 7 is embedded into the inter-pole connecting wire embedded into the arc-shaped groove 12, the coil anode lead 8 is embedded into the anode lead embedded into the arc-shaped groove 13, the coil cathode lead 9 is embedded into the cathode lead embedded into the arc-shaped groove 14, and the winding end part outer circle fixing hoop 5 is hooped on the outer circle of the.

The depth of the inter-pole connecting wire embedded into the arc-shaped groove 11 is the same as the height of the inter-pole connecting wire 6, the depth of the inter-pole connecting wire embedded into the arc-shaped groove 12 is the same as the height of the inter-pole connecting wire 7, the depth of the anode lead embedded into the arc-shaped groove 13 is the same as the height of the anode lead 8 of the coil, and the depth of the cathode lead embedded into the arc-shaped groove 14 is the same as the height of the cathode lead 9 of the coil.

Claims (2)

1. A supporting structure for hooping a winding end part of a tower-shaped coil of a rotor comprises a rotating shaft (1), a rotor coil and a winding end part excircle fixing hoop (5), wherein the rotor coil is formed by serially connecting tower-shaped coils, the tower-shaped coils are formed by serially connecting concentric heavy windings, interelectrode connecting wires (6) are arranged among the tower-shaped coils, the heavy windings are provided with the heavy connections (7), the rotor coil is provided with a coil anode lead (8) and a coil cathode lead (9), the rotating shaft (1) is fixedly provided with a winding end part annular supporting frame (2), the winding end part annular supporting frame (2) is fixedly provided with a heavy winding fixing U-shaped clamp (10), and a winding end part (4) of the heavy winding is arranged in the heavy winding fixing U-shaped clamp (10), and is characterized in that an insulating supporting ring (3) is sleeved on the winding end part annular supporting frame (2), the outer circle surface of the insulating support ring (3) is respectively provided with an interelectrode connecting wire embedding arc-shaped groove (11), an interelectrode connecting wire embedding arc-shaped groove (12), an anode lead embedding arc-shaped groove (13) and a cathode lead embedding arc-shaped groove (14), the interelectrode connecting wire (6) is embedded in the interelectrode connecting wire embedding arc-shaped groove (11), the interelectrode connecting wire (7) is embedded in the interelectrode connecting wire embedding arc-shaped groove (12), a coil anode lead (8) is embedded in the anode lead embedding arc-shaped groove (13), a coil cathode lead (9) is embedded in the cathode lead embedding arc-shaped groove (14), and a winding end outer circle fixing hoop (5) is hooped on the outer circle of the winding end (4).

2. The supporting structure for rotor tower-shaped coil winding end hoop fastening according to claim 1, wherein the depth of the inter-pole connecting wire embedded into the arc-shaped groove (11) is the same as the height of the inter-pole connecting wire (6), the depth of the inter-pole connecting wire embedded into the arc-shaped groove (12) is the same as the height of the inter-pole connecting wire (7), the depth of the positive lead embedded into the arc-shaped groove (13) is the same as the height of the coil positive lead (8), and the depth of the negative lead embedded into the arc-shaped groove (14) is the same as the height of the coil negative lead (9).

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