CN212033972U

CN212033972U - Limiting tool for preventing short circuit of flat wire stator winding of alternating-current generator

Info

Publication number: CN212033972U
Application number: CN202020817371.XU
Authority: CN
Inventors: 季建; 张小兵
Original assignee: Chengdu Huachuan Electric Parts Co Ltd
Current assignee: Chengdu Huachuan Electric Parts Co Ltd
Priority date: 2020-05-17
Filing date: 2020-05-17
Publication date: 2020-11-27
Anticipated expiration: 2030-05-17

Abstract

The utility model relates to a spacing frock for preventing short circuit of alternator flat wire stator winding, including a plurality of spacer pins, and a locating ring for fixing the spacer pin, a compression ring for limiting the spacer pin, a plurality of spacer pin fixing holes which axially penetrate through the locating ring are arranged on the locating ring for fixing the spacer pin, each spacer pin is respectively fixed in the locating pin fixing hole and partially extends outwards, a spacing for stepping down the stator winding flat wire is left between the extending parts of adjacent spacer pins, axial penetrating stepping-down holes for leading-out wires of the stator winding to pass are correspondingly arranged on the locating ring and the compression ring, the sum of the spacing pin fixing holes and the stepping-down holes of the leading-out wires is equal to the number of the wire slots of the stator, the compression ring is fixedly connected with the locating ring through screws, so that the gaps between the winding coils of the flat wire stator wire slots are even, a safe distance is left between the coils, and the coils are, the percent of pass of the flat wire stator of the alternating-current generator is improved.

Description

Limiting tool for preventing short circuit of flat wire stator winding of alternating-current generator

Technical Field

The utility model relates to a frock, in particular to prevent spacing frock of alternator flat wire stator winding short circuit.

Background

The efficient generator is a generator which takes measures from the aspects of design, materials, process and the like, reduces loss and improves generating efficiency. The number of the stator slots of the alternating-current generator in the high-efficiency generator is large, and when the stator winding of the high-efficiency generator is formed in a winding mode, a gap of 1.5mm needs to be guaranteed between every two adjacent wire slots, but when the stator winding of the alternating-current generator is actually wound, gaps between coils are not uniform, if gaps between the coils are small during forming, the two adjacent coils are easy to touch to cause short circuit, even the stator winding is wound well and is not formed, some coils are conducted due to contact to cause short circuit of the coils, therefore, the alternating-current generator breaks down due to short circuit of the stator winding, and the stator winding can be burnt seriously.

Disclosure of Invention

The utility model aims at prior art not enough, provide a prevent spacing frock of alternator flat wire stator winding short circuit, it enables the gap between the winding coil of each wire casing of flat wire stator even, leaves safe distance for between the coil, prevents that the coil from taking place the short circuit, improves alternator flat wire stator's qualification rate.

The technical scheme of the utility model is that: the utility model provides a prevent spacing frock of alternator flat wire stator winding short circuit, includes a plurality of spacer pins to and be used for fixed spacer pin's holding ring, be used for the spacing clamping ring of holding pin, be used for setting up a plurality of spacer pin fixed orificess that run through the holding ring along the axial on the holding ring of fixed spacer pin, each spacer pin is fixed respectively in the holding pin fixed orifices and partly overhanging, leaves the interval of stepping down for the stator winding flat wire between the overhang of adjacent spacer pin, it is equipped with the hole of stepping down that the axial that supplies the stator winding lead-out wire to pass runs through to correspond on holding ring and the clamping ring, the holding pin fixed orifices and lead-out wire hole sum of stepping down equal the wire casing number of stator, the clamping ring passes through screw and holding ring fixed connection.

The clamping ring is provided with a screw mounting hole for penetrating a screw, and the positioning ring is provided with a threaded hole corresponding to the screw mounting hole of the clamping ring.

The threaded hole on the positioning ring is a stepped hole, the large-diameter hole at the upper section of the stepped hole is a threaded hole section, and the small-diameter hole at the lower section of the stepped hole is used for fixing the limiting pin.

The diameter of the limiting pin is the same as the width of the groove wall between two adjacent winding grooves on the stator.

The diameter of the limiting pin fixing hole is 1.5 mm.

The limiting pin is in interference fit in the limiting pin fixing hole.

And the inner hole wall of the abdicating hole of the leading-out wire of the positioning ring is provided with an arc chamfer.

Adopt above-mentioned technical scheme: the clamping ring is fixedly connected with the positioning ring through a screw, a plurality of limiting pin fixing holes penetrating through the positioning ring along the axial direction are formed in the positioning ring, each limiting pin is fixed in each limiting pin fixing hole, part of each limiting pin extends outwards, one end, fixed in each limiting pin fixing hole, of each limiting pin is limited through the clamping ring, and the limiting pins are prevented from falling off from the limiting pin fixing holes. And a space for yielding the stator winding flat wire is reserved between the outward extending parts of the adjacent limiting pins, so that two adjacent coil windings of the flat wire stator can be isolated by each limiting pin, namely, the size of a gap between the adjacent coil windings is the diameter of each limiting pin. The positioning ring and the compression ring are correspondingly provided with the yielding holes, so that the outgoing lines of the stator winding can penetrate out of the yielding holes, and the outgoing lines are prevented from interfering with the forming of the stator winding. And the sum of the limiting pin fixing holes and the yielding holes is equal to the number of the wire slots of the stator, so that uniform gaps are formed among the coil windings of the flat wire stator through the limiting pins and the yielding holes. When in use, when the flat wire stator winding of the alternating-current generator is wound in a wire slot, before the flat wire stator winding is formed, the outward extension parts of the limiting pins of the limiting tool are respectively inserted into the gaps among the coil windings at one end of the stator winding to be formed, so that uniform gaps are formed among the coil windings, the leading-out wires of the stator winding respectively penetrate out of the corresponding abdicating holes, so that the limiting tool is fixed at one end of the stator winding to be formed, then the flat wire stator winding is formed, because the coil windings are uniformly isolated by the limiting pins, the coil windings cannot touch in the forming process, after the forming of the stator winding is finished, the limiting device is taken out, a certain gap can be kept between the formed stator windings, therefore, the limiting tool can prevent the adjacent coil windings from touching when the stator winding is formed, therefore, the purpose of avoiding short circuit of each coil winding is achieved, and the production qualification rate of the flat wire stator is improved.

The threaded hole on the positioning ring is a stepped hole, the large-diameter hole at the upper section of the stepped hole is a threaded hole section, the small-diameter hole at the lower section of the stepped hole is used for fixing the limiting pin, the positioning ring is convenient to connect and fix with the compression ring through a threaded hole, the purpose of fixing the limiting pin can be realized, and the positioning ring is reasonable in design and simple to assemble.

The diameter of the limiting pin is the same as the width of the groove wall between two adjacent wire winding grooves on the stator, namely, the limiting pin can ensure that enough and uniform safety distance exists between the two adjacent wire winding grooves.

The limiting pin is in interference fit in the limiting pin fixing hole, and the limiting pin is simple to assemble and reliable in connection.

The inner hole wall of the abdicating hole of the leading-out wire of the positioning ring is provided with an arc chamfer, so that the leading-out wire is prevented from scraping with the inner hole wall of the abdicating hole when penetrating out of the abdicating hole.

The invention is further described with reference to the drawings and the specific embodiments.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the pressure ring of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

fig. 4 is a schematic structural view of the positioning ring of the present invention;

FIG. 5 is a cross-sectional view B-B of FIG. 4;

fig. 6 is an assembly diagram of the present invention with a flat wire stator.

Detailed Description

Referring to fig. 1 to 6, a limiting tool for preventing a short circuit of a flat wire stator winding of an alternating-current generator comprises a plurality of limiting pins 1, a positioning ring 2 for fixing the limiting pins and a pressing ring 3 for limiting the limiting pins. The clamping ring is characterized in that a screw mounting hole 3-1 is formed in the clamping ring 3 and used for allowing a screw 5 to pass through, a threaded hole 2-2 is formed in the positioning ring 2 corresponding to the screw mounting hole 3-1 of the clamping ring 3, the clamping ring 3 penetrates through the screw mounting hole 3-1 and the threaded hole 2-2 through the screw 5 and is fixedly connected with the positioning ring 2, and the positioning ring 2 and the clamping ring 3 are fixedly connected through the screw 5, so that the connection reliability can be guaranteed, and the clamping ring is convenient to assemble. The locating ring 2 for fixing the limiting pin is provided with a plurality of limiting pin fixing holes 2-1 which axially penetrate through the locating ring 2, each limiting pin 1 is respectively fixed in the limiting pin fixing holes 2-1, and part of each limiting pin 1 extends outwards, namely one end of each limiting pin 1 is fixed in each limiting pin fixing hole 2-1 to form limiting through a pressing ring 3, the limiting pin 1 is prevented from falling off from the limiting pin fixing hole 2-1, the other end of each limiting pin 1 extends out of each limiting pin fixing hole 2-1 to form an extending part, the limiting pins 1 are in interference fit in the limiting pin fixing holes 2-1, and the locating ring is simple to assemble and reliable in connection. And a space for avoiding the flat wire of the stator winding 6 is reserved between the outer extension parts of the adjacent limiting pins 1, so that the outer extension parts of the limiting pins 1 are inserted between the two adjacent coil windings of the flat wire stator, and the two adjacent coil windings are isolated by the limiting pins 1, namely, the size of a gap between the adjacent coil windings is the diameter of the limiting pin 1. The diameter of the limiting pin 1 is the same as the width of the groove wall between two adjacent winding grooves on the stator, the diameter of the limiting pin fixing hole 2-1 is 1.5mm, the limiting pin with the diameter of 1.5mm is adopted in the embodiment, and the limiting pin 1 can ensure that two adjacent wire grooves have enough and uniform safety distance, even if a uniform gap of 1.5mm is kept between two adjacent coil windings. The positioning ring 2 and the compression ring 3 are correspondingly provided with the yielding holes 4 for the outgoing lines of the stator winding to penetrate through in the axial direction, so that the outgoing lines of the stator winding 6 can penetrate out of the yielding holes 4, the outgoing lines are prevented from interfering the forming of the stator winding 6, and the forming of the stator winding 6 is facilitated. The inner hole wall of the abdicating hole 4 of the outgoing line of the positioning ring 2 is provided with an arc chamfer, so that the outgoing line is prevented from being scraped with the inner hole wall of the abdicating hole 4 when penetrating out of the abdicating hole 4, and the outgoing line is protected. The sum of the limiting pin fixing holes 2-1 and the outgoing line abdicating holes 4 is equal to the number of the wire slots of the stator, uniform gaps are formed between the coil windings of the flat wire stator through the limiting pins 1 and the abdicating holes 4, and in the actual production process, the limiting pin fixing holes 2-1 and the abdicating holes 4 in different numbers can be processed on the positioning ring 2 according to the actual number of the wire slots of the flat wire stator and the number of the outgoing lines.

In the embodiment, the threaded hole 2-2 on the positioning ring 2 is a stepped hole, the large-diameter hole at the upper section of the stepped hole is a threaded hole section and is used for being in threaded fit with the screw 5, the small-diameter hole at the lower section of the stepped hole is used for fixing the limiting pin, the positioning ring 2 can be connected and fixed with the compression ring 3 through the screw 5 through the threaded hole 2-2, the purpose of fixing the limiting pin 1 can also be achieved, and the positioning ring is reasonable in design and simple to assemble.

When the utility model is used, after the flat wire stator winding of the alternating-current generator is wound in the wire slot, when the winding is not formed, the overhang part of the limit pin 1 of the limit tool is inserted into the gap between the coil windings at one end of the stator winding 6 to be formed, the limit pin 1 can form a uniform gap between the coil windings, because the positioning ring 2 and the compression ring 3 are both in a ring shape, a worker can conveniently observe whether the limit pin 1 is inserted in place or not from the center holes of the positioning ring 2 and the compression ring 3 when using the tool, the assembly efficiency is improved, the leading-out wires of the stator winding 6 respectively penetrate out of the corresponding abdicating holes 4, thereby fixing the limit tool on one end of the stator winding 6 to be formed, then forming the flat wire stator winding, because the coil windings are uniformly isolated by the limit pin 1, the coil windings can not touch in the forming process, after the stator winding 6 is molded, the limiting device can be taken out, a certain gap is still kept between the molded stator windings 6, and an even and effective safe space can be formed between the molded flat wire stator windings. Therefore, when the stator winding 6 is formed, the limiting tool can be used for effectively preventing adjacent coil windings from touching, so that the purpose of avoiding short circuit of each coil winding is achieved, workers only need to fix the limiting tool and one end, needing to be formed, of the flat wire stator, the flat wire stator winding can be formed, the production efficiency of the flat wire stator can be improved, and the production yield of the flat wire stator can be greatly improved.

Claims

1. The utility model provides a prevent spacing frock of alternator flat wire stator winding short circuit which characterized in that: including a plurality of spacer pins (1) to and be used for holding ring (2), the clamping ring (3) that is used for the spacer pin spacing of fixed spacer pin, be used for setting up a plurality of spacer pin fixed orificess (2-1) that run through retaining ring (2) along the axial on retaining ring (2) for fixed spacer pin, each spacer pin (1) is fixed respectively in spacer pin fixed orifices (2-1) and partially overhanging, leaves the interval of stepping down for the stator winding ribbon line between the overhang of adjacent spacer pin (1), it is equipped with axial through's the hole of stepping down (4) that supplies the stator winding lead-out wire to pass to correspond on retaining ring (2) and clamping ring (3), spacer pin fixed orifices (2-1) and lead-out wire hole of stepping down (4) sum equal the wire casing number of stator, clamping ring (3) are through screw (5) and retaining ring (2) fixed connection.

2. The limiting tool for preventing the short circuit of the flat wire stator winding of the alternating-current generator according to claim 1, characterized in that: the clamping ring (3) is provided with a screw mounting hole (3-1) for penetrating a screw (5), and the positioning ring (2) is provided with a threaded hole (2-2) corresponding to the screw mounting hole (3-1) of the clamping ring (3).

3. The limiting tool for preventing the short circuit of the flat wire stator winding of the alternating-current generator according to claim 2, is characterized in that: the threaded hole (2-2) on the positioning ring (2) is a stepped hole, the large-diameter hole at the upper section of the stepped hole is a threaded hole section, and the small-diameter hole at the lower section of the stepped hole is used for fixing the limiting pin (1).

4. The limiting tool for preventing the short circuit of the flat wire stator winding of the alternating-current generator according to claim 3, characterized in that: the diameter of the limiting pin (1) is the same as the width of the groove wall between two adjacent winding grooves on the stator.

5. The limiting tool for preventing the short circuit of the flat wire stator winding of the alternating-current generator according to claim 1, characterized in that: the diameter of the limiting pin fixing hole (2-1) is 1.5 mm.

6. The limiting tool for preventing the short circuit of the flat wire stator winding of the alternating-current generator according to claim 1, characterized in that: the limiting pin (1) is in interference fit in the limiting pin fixing hole (2-1).

7. The limiting tool for preventing the short circuit of the flat wire stator winding of the alternating-current generator according to claim 1, characterized in that: and the inner hole wall of the leading-out wire abdicating hole (4) of the positioning ring (2) is provided with an arc chamfer.