CN210405018U - Pre-tightening device for stator coil of alternating current linear motor - Google Patents
Pre-tightening device for stator coil of alternating current linear motor Download PDFInfo
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- CN210405018U CN210405018U CN201921144281.2U CN201921144281U CN210405018U CN 210405018 U CN210405018 U CN 210405018U CN 201921144281 U CN201921144281 U CN 201921144281U CN 210405018 U CN210405018 U CN 210405018U
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- top board
- coil
- pull rod
- lower bolster
- stator coil
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Abstract
The utility model is suitable for a motor processing technology field provides a preloading device of alternating current linear electric motor stator coil, including top board, puller bolt, lower bolster and pull rod, the top board with the lower bolster sets up relatively, just the top board is located the top of lower bolster, install the perpendicular to on the top board a plurality of puller bolt and a plurality of the pull rod is connected top board and lower bolster through the pull rod, and top board swing joint pull rod, lower bolster fixed connection pull rod is fixed with a plurality of puller bolts that are used for compressing tightly the coil on the top board to can be through placing iron core and coil between top board and lower bolster, and hug closely the coil with the lower extreme of puller bolt, then through fastening top board in order to compress tightly the coil, convenient operation, the utility model discloses have and can reduce the gap between the coil interturn and between coil and iron core, The compressing effect is good.
Description
Technical Field
The utility model belongs to the technical field of motor processing, especially, relate to a pretensioning device of alternating current linear electric motor stator coil.
Background
In the manufacturing process of the coil, due to the existence of form and position tolerance, the coil cannot be completely matched with the size of the drawing, namely, after the coil is embedded into the iron core, the shape of the coil and the shape of the iron core groove cannot be 100% fitted. Gaps are created between the wires, the coil and the slot wedge. The gaps are filled with paint through paint dipping, small gaps can be filled, a part of paint can be lost when large gaps are baked, and the gaps still exist. When the motor works, the temperature is high, organic matters in the wire insulating material and the paint volatilize, and honeycomb-shaped gaps are formed inside the motor. The honeycomb gaps and gaps can reduce the integrated strength of the coil, influence the heat dissipation of the coil, cause the working temperature of the stator to be high, finally cause the coil to be loose, increase the turn length and the grounding probability of the coil and shorten the working life of the motor.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pretension device of alternating current linear electric motor stator coil aims at solving coil wire space gap big, the not enough problem of compactness of being connected of coil and iron core groove.
The utility model is realized in such a way that the pre-tightening device of the stator coil of the alternating current linear motor comprises an upper pressing plate, a jacking bolt, a lower backing plate and a pull rod;
the upper pressing plate and the lower backing plate are arranged oppositely, the upper pressing plate is located above the lower backing plate, the upper pressing plate is provided with a plurality of tightening bolts and a plurality of pull rods, the lower ends of the pull rods penetrate through the upper pressing plate and are fixedly connected with the lower backing plate, and the upper pressing plate is movably connected with the pull rods.
The utility model discloses still provide preferred, the lower extreme of the tight bolt in top passes the top board, just the lower extreme of the tight bolt in top is fixed with the cushion.
The utility model discloses still provide preferred, the lower extreme of pull rod is provided with the external screw thread, two fixation nut are installed to the lower extreme of pull rod, two fixation nut centre gripping respectively is in the both sides of lower bolster plate thickness direction.
The utility model discloses still provide preferred, be fixed with respectively on the top board with a plurality of the corresponding a plurality of sliding sleeves of pull rod, the sliding sleeve cover is established correspondingly the outside and the swing joint of pull rod the pull rod.
The utility model discloses it is preferred still to provide, be fixed with two splint that the symmetry set up on the lower surface of top board.
The utility model discloses it is preferred still to provide, the puller bolt detachable is fixed on the top board.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a preloading device of alternating current linear electric motor stator coil, through top board and the bottom plate that sets up through the pull rod connection, and top board swing joint pull rod, bottom plate fixed connection pull rod is fixed with a plurality of puller bolts that are used for compressing tightly the coil on the top board to can place between top board and bottom plate through with iron core and coil, and hug closely the coil with the lower extreme of puller bolt, then through fastening the top board in order to compress tightly the coil, convenient operation, the utility model discloses can compress tightly respectively a plurality of iron core inslot's coil, compress tightly effectually, reduce to minimum with the gap between the coil and between coil and the iron core, increase motor integration degree, reduce the grounding probability that the coil vibrates the initiation because of the electromagnetism, improve motor operation reliability.
Drawings
Fig. 1 is a schematic view of an overall structure of a pre-tightening device for a stator coil of an ac linear motor according to the present invention;
fig. 2 is an enlarged schematic view of detail a in fig. 1.
In the figure: 1-upper pressing plate, 2-puller bolt, 3-lower backing plate, 4-pull rod, 5-sliding sleeve, 6-clamping plate, 7-cushion block, 8-fixing nut, 9-iron core and 10-coil.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-2, the present invention provides a technical solution: a pre-tightening device for a stator coil of an alternating-current linear motor comprises an upper pressing plate 1, a jacking bolt 2, a lower backing plate 3 and a pull rod 4.
The upper pressing plate 1 and the lower backing plate 3 are arranged oppositely, the upper pressing plate 1 is located above the lower backing plate 3, a plurality of tightening bolts 2 and a plurality of pull rods 4 perpendicular to the upper pressing plate 1 are installed on the upper pressing plate 1, the lower ends of the pull rods 4 penetrate through the upper pressing plate 1 and are fixedly connected with the lower backing plate 3, and the upper pressing plate 1 is movably connected with the pull rods 4.
In the embodiment, the upper pressing plate 1 and the lower backing plate 3 are both horizontally arranged and are rectangular plates, the tightening bolts 2 are uniformly distributed on the upper pressing plate 1 in a matrix shape, the plurality of pull rods 4 are distributed on four edges of the upper pressing plate 1, four pull rods 4 are arranged on each long edge of the upper pressing plate 1, two pull rods 4 are arranged on each short edge of the upper pressing plate 1, when the coil 10 is pre-tightened, the coil 10 is embedded into a groove of an iron core 9, at the moment, a gap exists between a lead in the coil 10 and an upper layer coil 10 and between the coil 10 and a groove insulator, the upper pressing plate 1 is fixed with the lower backing plate 3 through the pull rods 4, the tightening bolts 2 are screwed on the upper pressing plate 1 to abut against the surface of the coil 10, the coil 10 is tightened by adjusting the tightening force, the gap in the coil 10 is eliminated, the iron core 9, the coil 10 and the device are integrally hung into an oven for heating, eliminate coil 10 internal stress, the gap is no longer kick-backed after the pretightning force is got rid of, and the cooling back is pulled down the frock, and the internal gap reduces to the minimum.
Further, the lower end of the puller bolt 2 penetrates through the upper pressure plate 1, and a cushion block 7 is fixed at the lower end of the puller bolt 2.
In this embodiment, the number of spacers 7 corresponds to the number of coils 10, and before tightening the jack bolt 2, the spacers 7 are placed on the surface of each coil 10, the jack bolt 2 is screwed on the upper platen 1, the spacers 7 on the surface of the coil 10 are pressed against each other, and the spacers 7 are pressed against the coil 10 by adjusting the tightening force.
Further, the lower extreme of pull rod 4 is provided with the external screw thread, and two fixation nuts 8 are installed to the lower extreme of pull rod 4, and two fixation nuts 8 centre gripping are in the both sides of the thickness direction of lower bolster 3 respectively.
In this embodiment, the nut 8 is used for fixing the pull rod 4, one nut 8 is previously installed on the pull rod 4 before the pull rod 4 passes through the lower backing plate 3, another nut 8 is installed on the portion of the pull rod 4 below the lower backing plate 3 after the pull rod 4 passes through the lower backing plate 3, and then the two nuts 8 are relatively tightened, so that the pull rod 4 is stably and fixedly installed on the lower backing plate 3.
Furthermore, a plurality of sliding sleeves 5 corresponding to the plurality of pull rods 4 are fixed on the upper pressure plate 1, and the sliding sleeves 5 are sleeved outside the corresponding pull rods 4 and movably connected with the pull rods 4.
In the present embodiment, the sliding sleeve 5 is used to stabilize the sliding of the upper platen 1, and the sliding sleeve 5 is fixed to the pull rod 4 by a thread on the outer surface of the pull rod 4.
Furthermore, two clamping plates 6 which are symmetrically arranged are fixed on the lower surface of the upper pressure plate 1.
In the present embodiment, the clamp plates 6 are used to clamp and fix the core 9 and are respectively located on both sides of the core 9.
Further, the jacking bolt 2 is detachably fixed on the upper pressure plate 1.
In the present embodiment, the upper platen 1 is provided with screw holes for attaching the jack bolts 2.
The utility model discloses a theory of operation and use flow: the utility model discloses install the back, when carrying out the pretension to coil 10, coil 10 imbeds the inslot of iron core 9, at this moment between the 10 inside wires of coil, between the lower floor coil 10, all there is the gap between coil 10 and the groove insulation, top board 1 is in the same place through pull rod 4 and lower bolster 3 are fixed, cushion 7 is stacked up on every coil 10 surface, top bolt 2 is screwed up at top board 1, the cushion 7 on coil 10 surface is withstood, screw up the power through the adjustment, compress tightly cushion 7, cushion 7 withstands tight coil 10 again, eliminate the inside gap of coil 10, with iron core 9, coil 10 with the utility model discloses wholly hang into outside oven heating, eliminate coil 10 internal stress, get rid of the back gap at the pretightning force and no longer kick-back, after the cooling, will the utility model discloses pull down, coil 10 and the inside gap of iron core 9 reduce to minimum.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The utility model provides a preloading device of AC linear electric motor stator coil which characterized in that: comprises an upper pressure plate (1), a puller bolt (2), a lower backing plate (3) and a pull rod (4);
the utility model discloses a tie-rod fixing device, including top board (1), lower bolster (3), top board (1) and pull rod (4), top board (1) with lower bolster (3) sets up relatively, just top board (1) is located the top of lower bolster (3), install the perpendicular to on top board (1) a plurality of top board (1) puller bolt (2) and a plurality of pull rod (4), the lower extreme of pull rod (4) passes top board (1) and fixed connection lower bolster (3), top board (1) swing joint pull rod (4).
2. The pre-tensioning device for the stator coil of the alternating current linear motor as claimed in claim 1, wherein: the lower end of the puller bolt (2) penetrates through the upper pressing plate (1), and a cushion block (7) is fixed at the lower end of the puller bolt (2).
3. The pre-tensioning device for the stator coil of the alternating current linear motor as claimed in claim 1, wherein: the lower extreme of pull rod (4) is provided with the external screw thread, two fixation nut (8) are installed to the lower extreme of pull rod (4), two fixation nut (8) centre gripping respectively is in the both sides of the thickness direction of lower bolster (3).
4. The pre-tensioning device for the stator coil of the alternating current linear motor as claimed in claim 1, wherein: a plurality of sliding sleeves (5) corresponding to the pull rods (4) are fixed on the upper pressing plate (1) respectively, and the sliding sleeves (5) are sleeved on the corresponding outer sides of the pull rods (4) and movably connected with the pull rods (4).
5. The pre-tensioning device for the stator coil of the alternating current linear motor as claimed in claim 1, wherein: two clamping plates (6) which are symmetrically arranged are fixed on the lower surface of the upper pressure plate (1).
6. The pre-tensioning device for the stator coil of the alternating current linear motor as claimed in claim 1, wherein: the tightening bolt (2) is detachably fixed on the upper pressure plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921144281.2U CN210405018U (en) | 2019-07-19 | 2019-07-19 | Pre-tightening device for stator coil of alternating current linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921144281.2U CN210405018U (en) | 2019-07-19 | 2019-07-19 | Pre-tightening device for stator coil of alternating current linear motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210405018U true CN210405018U (en) | 2020-04-24 |
Family
ID=70355523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921144281.2U Active CN210405018U (en) | 2019-07-19 | 2019-07-19 | Pre-tightening device for stator coil of alternating current linear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210405018U (en) |
-
2019
- 2019-07-19 CN CN201921144281.2U patent/CN210405018U/en active Active
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