CN212304975U - Rear end cover of generator - Google Patents
Rear end cover of generator Download PDFInfo
- Publication number
- CN212304975U CN212304975U CN202020817997.0U CN202020817997U CN212304975U CN 212304975 U CN212304975 U CN 212304975U CN 202020817997 U CN202020817997 U CN 202020817997U CN 212304975 U CN212304975 U CN 212304975U
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- China
- Prior art keywords
- rear end
- end cover
- cover body
- generator
- boss
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 21
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Motor Or Generator Frames (AREA)
Abstract
The utility model provides a generator rear end cover, which comprises a rear end cover body; the front end of the rear end cover body is provided with an inner circle spigot; the rear end face of the rear end cover body is provided with at least two penetrating holes, and a rib plate is formed between every two adjacent penetrating holes; a boss extending backwards is arranged at the central position of the rear end face of the rear end cover body; the inner part of the boss is provided with a stepped through hole to form a bearing chamber; the inner wall of the bearing chamber is inwards sunken to form an axial limiting and accommodating groove for installing the bearing with the outer ring provided with the radial stop piece, so that the bearing is prevented from running out of the outer ring in a hot state.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a generator accessory technical field, especially a generator rear end cap.
[ background of the invention ]
The rear end cover of the generator is an integral aluminum alloy die casting which is a very important part in the generator and mainly plays a role in supporting the rear end of the rotor, wherein the bearing is arranged in a bearing chamber of the rear end cover and supports and fixes the stator together with the front end cover, the rotor is driven by a diesel engine or a gasoline engine to run at high speed, the rotating speed can reach 3000 revolutions per minute or 3600 revolutions per minute, vibration exists in the running process, and when the generator works for a long time, the bearing chamber generates a thermal expansion phenomenon along with the rise of the temperature of the machine and can be guided to the bearing to run out of an outer ring, because the coefficient of thermal expansion of the aluminum alloy material is larger than that of the bearing steel material.
Wherein, bearing race's meaning: that is, as the temperature of the machine rises, the bearing chamber thermally expands, which causes a gap between the bearing outer ring and the bearing chamber, thereby causing the bearing outer ring to move relative to the bearing chamber.
[ Utility model ] content
The to-be-solved technical problem of the utility model lies in providing a generator rear end cap, has spacing recess for the installation outer lane has the bearing of radial stop spare, prevents that the bearing from running the outer lane under the hot attitude.
The utility model discloses a realize like this: a generator rear end cover comprises a rear end cover body;
the front end of the rear end cover body is provided with an inner circle spigot;
the rear end face of the rear end cover body is provided with at least two penetrating holes, and a rib plate is formed between every two adjacent penetrating holes;
a boss extending backwards is arranged at the central position of the rear end face of the rear end cover body; the inner part of the boss is provided with a stepped through hole to form a bearing chamber; the inner wall of the bearing chamber is inwards sunken to form an axial limiting accommodating groove.
Furthermore, the left side and the right side of the boss are respectively provided with a convex column, and the centers of the two convex columns are respectively provided with a screw hole.
Furthermore, end cover feet are arranged on the lower portion of the side wall of the rear end cover body, and two vertical through holes are formed in two end portions of each end cover foot.
Furthermore, four symmetrical hanging corners are arranged on the outer side wall of the front end of the rear end cover body, and a hanging corner hole is formed in each hanging corner.
Furthermore, axial reinforcing ribs are arranged on the inner wall of the rear end cover body and correspond to the four hanging corners.
Furthermore, the rear end of the rear end cover body is provided with an outer circle spigot.
Furthermore, the number of the penetrating holes is four, the penetrating holes are evenly distributed on the circumference, and each penetrating hole is in a fan shape.
Furthermore, reinforcing rib plates are arranged between the boss and the four rib plates, and each reinforcing rib plate is connected to the boss and the rib plate.
Furthermore, the limiting accommodating groove is positioned on the central line of the rib plate corresponding to the bearing chamber.
Further, the diameter of the inner round spigot is 225 mm.
The utility model has the advantages that: the utility model relates to a generator rear end cover, which comprises a rear end cover body; the front end of the rear end cover body is provided with an inner circle spigot; the rear end face of the rear end cover body is provided with at least two penetrating holes, and a rib plate is formed between every two adjacent penetrating holes; a boss extending backwards is arranged at the central position of the rear end face of the rear end cover body; the inner part of the boss is provided with a stepped through hole to form a bearing chamber; the inner wall of the bearing chamber is inwards sunken to form an axial limiting and accommodating groove for installing the bearing with the outer ring provided with the radial stop piece, so that the bearing is prevented from running out of the outer ring in a hot state.
[ description of the drawings ]
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a front perspective view of a generator rear end cover according to the present invention.
Fig. 2 is a rear perspective view of a generator rear end cover according to the present invention.
Fig. 3 is a schematic view of an installation effect of a rear end cover of a generator according to the present invention.
Description of reference numerals:
a generator rear end cap 100;
a rear end cap body 1;
an inner circular seam allowance 11, the diameter D of which is the diameter of the inner circular seam allowance;
through the holes 12 of the plastic film are formed,
the rib plate 13 is provided with screw holes 131-132-133;
the boss 14, the bearing chamber 141, the limit accommodating groove 1411;
a boss 15, a screw hole 151;
hanging corners 17, hanging corner holes 171;
an outer spigot 19;
a reinforcing rib plate 20;
bearing 201, radial stop 2011, rear cover bolt 202, motor rear cover 203, rotor core 204, rotating shaft 205, stator bolt 206, stator core 207 and front end cover 208.
[ detailed description ] embodiments
In the description of the present invention, it should be understood that the description indicating the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model discloses the general concept of implementation as follows:
(1) an axial retaining receiving groove 1411 is provided in the bearing compartment 141 for receiving the bearing 201 with a radial stop on the outer race to prevent the bearing 201 from running out of the outer race in the hot state.
(2) The rear end cover body 1 is provided with the rib plate 13, the reinforcing rib plate 20 and the axial reinforcing rib 18, so that the strength of the generator rear end cover 100 is increased.
Please refer to fig. 1 to 3.
The utility model relates to a generator rear end cover 100, which comprises a rear end cover body 1;
the front end of the rear end cover body 1 is provided with an inner circle spigot 11 for positioning and mounting a generator stator; in a specific embodiment, the diameter is 225 mm.
The rear end face of the rear end cover body 1 is provided with at least two penetrating holes 12, the penetrating holes 12 are used for heat dissipation, rib plates 13 are formed between every two adjacent penetrating holes 12, the strength is enhanced, and the rear end cover body is used for mounting parts such as a wiring board, a voltage regulator and a carbon brush holder;
a boss 14 extending backwards is arranged at the central position of the rear end face of the rear end cover body 1; the inner part of the boss is a stepped through hole to form a bearing chamber 141; the inner wall of the bearing chamber 141 is recessed inward to form an axial retaining receiving groove 1411. The bearing chamber 141 is used for mounting a bearing, wherein the limiting and accommodating groove 1411 is used for mounting the bearing 201 with the radial stop 2011 on the outer ring, so that the radial stop 2011 of the bearing is limited by the limiting and accommodating groove 1411 in a thermal expansion state, and the bearing is prevented from running out of the outer ring in the thermal expansion state.
The left side and the right side of the boss 14 are respectively provided with a convex column 15, and the centers of the two convex columns 15 are respectively provided with a screw hole 151 for fixing the motor rear cover 203.
The lower part of the side wall of the rear end cover body 1 is provided with end cover feet 16, and two end parts of the end cover feet 16 are respectively provided with a vertical through hole 161. The end cover feet 16 play a role in supporting the rear end of the motor, and the through holes 161 are used for penetrating locking bolts to install and fix the rear end cover of the generator.
Four symmetrical hanging corners 17 are arranged on the outer side wall of the front end of the rear end cover body 1, and a hanging corner hole 171 is formed in each of the four hanging corners 17 and used for a stator bolt to penetrate through and be locked with the front end cover to fasten a stator core.
And axial reinforcing ribs 18 are arranged on the inner wall of the rear end cover body 1 and correspond to the four hanging corners 17, so that the strength is enhanced.
The rear end of the rear end cover body 1 is provided with an excircle spigot 19 for radial and axial positioning of the motor rear cover.
The number of the penetrating holes 12 is four, the penetrating holes are evenly distributed on the circumference, and each penetrating hole 12 is fan-shaped.
Reinforcing rib plates 20 are arranged between the boss 14 and the four rib plates 13 to reinforce the strength, and each reinforcing rib plate 20 is connected with the boss 14 and the rib plate 13.
The limiting accommodating groove 1411 is located on a center line of the rib plate 13 corresponding to the bearing chamber 141, so that the influence of the opening of the limiting accommodating groove 1411 on the strength of the rear end cover of the generator is reduced, because the strength is stronger at the position than other parts in the circumferential direction.
The diameter D of the inner circular seam allowance 11 is 225 mm. In a specific embodiment, the stator core is used for installing a generator with the outer diameter of 225mm of the stator core, and a rear end cover is provided for the generator.
In a specific embodiment, the four rib plates 13 of the rear end cover body 1 are further provided with mounting screw holes (131, 132, 133) for mounting parts such as a wiring board, a voltage regulator, a carbon brush holder, and the like, respectively, and in a specific implementation, the positions and sizes of the mounting screw holes (131, 132, 133) are set according to the shapes and sizes of the parts such as the wiring board, the voltage regulator, the carbon brush holder, and the like.
As shown in fig. 3, it is a schematic view of the installation effect of the rear end cover 100 of the power generator according to the present invention.
Wherein,
the bearing 201 is embedded in the bearing chamber 141, and a radial stop 2011 at the outer ring of the bearing 201 is embedded in the limit accommodating groove 1411;
the motor rear cover 203 is locked into the screw hole 151 by a rear cover bolt 202, and the motor rear cover 203 is fixed;
the assembled rotor core 204, stator core 207 and rotating shaft 205 are installed in the front end cover 208 and the generator rear end cover 100; the stator core 207 is embedded in the inner circular seam allowance 11;
the generator rear end cover 100 and the front end cover 208 are locked and fixed by the stator bolts 206.
Although specific embodiments of the present invention have been described, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the claims appended hereto.
Claims (10)
1. A generator rear end cover is characterized in that: comprises a rear end cover body;
the front end of the rear end cover body is provided with an inner circle spigot;
the rear end face of the rear end cover body is provided with at least two penetrating holes, and a rib plate is formed between every two adjacent penetrating holes;
a boss extending backwards is arranged at the central position of the rear end face of the rear end cover body; the inner part of the boss is provided with a stepped through hole to form a bearing chamber; the inner wall of the bearing chamber is inwards sunken to form an axial limiting accommodating groove.
2. A generator rear end cap in accordance with claim 1, wherein: the left side and the right side of the boss are respectively provided with a convex column, and the centers of the two convex columns are respectively provided with a screw hole.
3. A generator rear end cap in accordance with claim 1, wherein: the rear end cover comprises a rear end cover body and is characterized in that end cover bottom feet are arranged on the lower portion of the side wall of the rear end cover body, and vertical through holes are formed in two end portions of each end cover bottom foot.
4. A generator rear end cap in accordance with claim 1, wherein: four symmetrical hanging corners are arranged on the outer side wall of the front end of the rear end cover body, and a hanging corner hole is formed in each hanging corner.
5. A generator rear end cap according to claim 4, wherein: and axial reinforcing ribs are arranged on the inner wall of the rear end cover body and correspond to the four hanging corners.
6. A generator rear end cap in accordance with claim 1, wherein: the rear end of the rear end cover body is provided with an excircle spigot.
7. A generator rear end cap in accordance with claim 1, wherein: the number of the penetrating holes is four, the penetrating holes are evenly distributed on the circumference, and each penetrating hole is fan-shaped.
8. A generator rear end cap according to claim 7, wherein: reinforcing rib plates are arranged between the boss and the four rib plates, and each reinforcing rib plate is connected with the boss and the rib plate.
9. A generator rear end cap in accordance with claim 1, wherein: the limiting accommodating groove is positioned on the central line of the rib plate corresponding to the bearing chamber.
10. A generator rear end cap in accordance with claim 1, wherein: the diameter of the inner circle spigot is 225 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020817997.0U CN212304975U (en) | 2020-05-15 | 2020-05-15 | Rear end cover of generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020817997.0U CN212304975U (en) | 2020-05-15 | 2020-05-15 | Rear end cover of generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212304975U true CN212304975U (en) | 2021-01-05 |
Family
ID=73968519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020817997.0U Active CN212304975U (en) | 2020-05-15 | 2020-05-15 | Rear end cover of generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212304975U (en) |
-
2020
- 2020-05-15 CN CN202020817997.0U patent/CN212304975U/en active Active
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