CN210041514U - Flame-proof generator - Google Patents
Flame-proof generator Download PDFInfo
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- CN210041514U CN210041514U CN201921276394.8U CN201921276394U CN210041514U CN 210041514 U CN210041514 U CN 210041514U CN 201921276394 U CN201921276394 U CN 201921276394U CN 210041514 U CN210041514 U CN 210041514U
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- end cover
- motor housing
- generator
- motor
- motor shell
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Abstract
A flame-proof generator comprises a motor shell with a port at one end and a rotor arranged in the motor shell, wherein an end cover is arranged in the port, and the outer wall of the end cover is connected with the inner wall of the motor shell in a flame-proof threaded fit manner; the rotor is provided with the pivot, pivot one end is installed in the shaft hole that the end cover set up, and the other end is installed in the shaft hole that motor housing set up. The external screw thread that the end cover of flame proof generator set up cooperatees with the internal thread that motor housing set up to in installing motor housing with the end cover, to motor housing's port closure, need not set up the bolt hole on motor housing's the terminal surface, thereby need not to occupy motor housing's space, reduced motor housing's wall thickness, and then reduced motor housing's external diameter, reduced the holistic volume of generator and occupy. Meanwhile, the motor shell can be ensured to have a larger inner diameter, the space in the motor shell has a certain volume, and the stator with a larger outer diameter can be accommodated, so that the performance parameters of the generator are increased.
Description
Technical Field
The utility model belongs to flame proof electrical equipment field especially relates to a flame proof generator.
Background
The explosion-proof generator is applied to underground flammable and explosive places, and meets the requirement of explosion-proof performance according to standard requirements.
The main structure of the explosion-proof generator comprises a shell, a stator, a rotor and an end cover. To load the stator into the housing, a port is provided at one end of the housing. After the stator is installed, an end cover is installed on the port, the stator is sealed in the shell, and an explosion-proof structure is arranged at a position where the inside of the motor is communicated with the external environment, so that explosion-proof is realized.
In order to fit the stator into the casing, the inner diameter of the casing port needs to be equal to or larger than the outer diameter of the stator, so that the inner diameter of the casing is large. Since the end cap needs to be fixed to the port of the casing by bolts, bolt holes need to be axially provided on the end face of the casing port. Because the casing needs have sufficient space to set up the screw hole, consequently the setting of screw hole occupies casing radial space, often makes end cover mounting flange external diameter be greater than casing external diameter size, has increased the holistic radial dimension of generator. The increase of the whole radial dimension of generator, in the narrow and small pit in space, increased the degree of difficulty that the installation of flame proof generator set up, if the size of whole shrink generator, though can reduce the installation degree of difficulty in the narrow and small space, but the design in the aspect of the motor performance has been sacrificed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses it is great to above-mentioned current flame proof generator volume, be difficult to at the narrow and small downhole installation setting in space, need sacrifice the problem of motor performance, provide a volume less and can guarantee the flame proof generator of performance maximize.
In order to achieve the above object, the utility model discloses a technical scheme be:
a flame-proof generator comprises a motor shell with a port at one end and a rotor arranged in the motor shell, wherein an end cover is arranged in the port, and the outer wall of the end cover is connected with the inner wall of the motor shell in a flame-proof threaded fit manner;
the rotor is provided with the pivot, pivot one end is installed in the shaft hole that the end cover set up, and the other end is installed in the shaft hole that motor housing set up.
Preferably, the front end of the end cover is supported against a stator fixedly arranged on the inner wall of the motor shell.
Preferably, the front end of the end cover is provided with a mounting groove into which one side of the rotor can extend.
Preferably, a stop ring is installed in the port, the outer wall of the stop ring is connected with the inner wall of the motor shell in a threaded fit mode, and the stop ring is attached to the end face of the rear side of the end cover in an abutting mode.
Preferably, the stop ring is provided with a mounting hole in which a bolt is mounted, and the bolt abuts against the end face of the rear side of the end cover.
Preferably, the stop ring is located in a receiving groove provided on a rear end face of the end cap.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
1. the external screw thread that the end cover of flame proof generator set up cooperatees with the internal thread that motor housing set up to in installing motor housing with the end cover, to motor housing's port closure, need not set up the bolt hole on motor housing's the terminal surface, thereby need not to occupy motor housing's space, reduced motor housing's wall thickness, and then reduced motor housing's external diameter, reduced the holistic volume of generator and occupy. Meanwhile, the motor shell can be ensured to have a larger inner diameter, the space in the motor shell has a certain volume, and the stator with a larger outer diameter can be accommodated, so that the performance parameters of the generator are increased.
2. The end cover is fixed in the motor shell, and the axial space of the generator cannot be occupied, so that the overall length of the generator is shortened, and the overall volume occupation of the generator is reduced.
3. The end cover is connected with the motor shell in a matched mode through the explosion-proof threads, so that the requirement on the explosion-proof performance of the explosion-proof generator is met while the end cover is fixed.
4. The end part of the end cover is propped against the stator, so that the stator can limit the loading position of the end cover. Because the axial length of rotor is greater than the stator, the mounting groove that the end cover set up can avoid the rotor to form the blocking to end cover axial screw in, makes the end cover can paste and lean on the stator.
5. The retaining ring of installation carries on spacingly to the end cover in the motor housing, prevents that the end cover from deviating from the motor housing, improves the fastness of its installation. The bolt is arranged on the stop ring and is propped against the end cover to generate axial pressure, so that the friction force on the threads is improved, the stop ring and the end cover are prevented from loosening, meanwhile, the friction force can be generated between the bolt and the end cover to block the rotation of the stop ring, and the firmness of the stop ring is improved.
6. The retaining ring sets up in the holding tank, prevents that the retaining ring from taking up the ascending space of generator axial, guarantees that generator overall length is less, reduces the generator volume and occupies.
Drawings
FIG. 1 is a partial cross-sectional structural view of the flame-proof generator of the present invention;
in the above figures: 1. a motor housing; 11. a port; 2. a rotor; 21. a rotating shaft; 3. an end cap; 31. a shaft hole; 32. mounting grooves; 33. accommodating grooves; 4. a stator; 5. a snap ring; 51. mounting holes; 6. and (4) bolts.
Detailed Description
The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the description of the present invention, it should be noted that the right side in fig. 1 is the front side, the left side is the rear side, the directions or positional relationships indicated by the terms "inner", "outer", "upper", "lower", "front", "rear", etc. are the positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in FIG. 1, the utility model provides a flame proof generator, including motor housing 1 and rotor 2.
The motor housing 1 is provided with a port 11 at one end so that the rotor 2 is loaded into the motor housing 1 through the port 11.
An end cover 3 is mounted in the port 11, and the end cover 3 closes the port 11, so that the rotor 2 is fixed in the motor housing 1.
The end cover 3 is positioned in the motor shell 1, and the outer wall of the end cover 3 is connected with the inner wall of the motor shell 1 in a threaded fit mode to fix the end cover 3.
The end cover 3 is fixed in the motor shell 1 instead of being fixed on the end surface of the motor shell 1, so that the end cover 3 does not occupy the space outside the motor shell 1, and the length of the explosion-proof generator is reduced; and bolt holes do not need to be arranged on the end surface of the motor shell 1, so that the motor shell 1 does not need to be thicker in wall thickness for arranging the bolt holes, and the outer diameter of the explosion-proof generator is reduced.
The reduction of the outer diameter and the length of the explosion-proof generator reduces the volume of the generator, thereby facilitating the installation and the setting in the underground with narrow space. Meanwhile, the motor shell can be ensured to have a larger inner diameter, the space in the motor shell has a certain volume, and the stator with a larger outer diameter can be accommodated, so that the performance parameters of the generator are increased.
The external threads arranged on the outer wall of the end cover 3 and the internal threads arranged on the inner wall of the motor shell 1 are all explosion-proof threads, so that the requirement of explosion-proof performance of an explosion-proof generator is met.
The rotor 2 is provided with a rotation shaft 21 for rotation.
The rotation shaft 21 is installed at one end in a shaft hole 31 provided in the end cover 3 and at the other end in a shaft hole provided in the motor housing 1, thereby achieving rotatable installation of the rotor 2.
In order to prevent the end cap 3 from being screwed too far and contacting the rotor 2, and rubbing against the rotating rotor 2, the front end of the end cap 3 abuts against the stator 4 fixed on the inner wall of the motor housing 1.
The stator 4 forms a convex structure on the inner wall of the motor housing 1 to limit the axial movement of the end cap 3.
Since the stator 4 is smaller in width than the rotor 2. In order to axially limit the end cover 3 by the stator 4 and prevent the rotor 2 from contacting the end cover 3, the front end of the end cover 3 is provided with a mounting groove 32 into which one side of the rotor 2 can extend.
When the end face of the end cover 3 contacts the stator 4, one side of the rotor 2 is positioned in the mounting groove 32 and can rotate in the space of the mounting groove 32.
In order to prevent the end cap 3 from loosening and coming out of the motor housing 1, a stop ring 5 is mounted in the port 11.
The outer wall of the stop ring 5 is connected with the inner wall of the motor shell 1 in a threaded fit mode, and the brake ring 5 is located on the rear side of the end cover 3 and attached to the end face of the rear side of the end cover 3.
The stop ring 5 fixed in the motor shell 1 axially limits the rear side of the end cover 3, prevents the end cover 3 from being separated from the motor shell 1 through the port 11, and keeps stable structure.
In order to improve the firmness of the installation and fixation of the snap ring 5, the snap ring 5 is provided with a bolt 6 in an installation hole 51, and the bolt 6 is pressed against the end surface of the rear side of the end cover 3.
The screwed bolt 6 generates axial pressure on the end cover 3, so that the thread friction force between the end cover 3 and the motor shell 1 is increased, the end cover 3 is difficult to rotate, and the firmness of the end cover 3 is improved.
The pressure generated by the bolt 6 to the end cover 3 is reacted to the stop ring 5, so that the friction force of the thread between the stop ring 5 and the motor shell 1 is increased, the stop ring 5 is difficult to rotate, and the firmness of the stop ring 5 is improved.
Further, the frictional force generated at the contact surface between the bolt 6 and the end cap 3 can prevent the rotation of the snap ring 5, thereby further improving the firmness of the snap ring 5.
In order to avoid the stop ring 5 occupying the space of the device, the stop ring 5 is located in the holding groove 33 provided on the end face of the rear side of the end cover 3, so that the stop ring 5 is hidden and installed, and the end face of the rear side of the stop ring 5 can be flush with the end face of the rear end of the motor housing 1 or be recessed into the motor housing 1.
Claims (6)
1. A flame-proof generator comprises a motor shell (1) with a port (11) at one end and a rotor (2) arranged in the motor shell (1), and is characterized in that an end cover (3) is arranged in the port (11), and the outer wall of the end cover (3) is connected with the inner wall of the motor shell (1) in a flame-proof threaded fit manner;
rotor (2) are provided with pivot (21), pivot (21) one end is installed in shaft hole (31) that end cover (3) set up, and the other end is installed in the shaft hole that motor housing (1) set up.
2. A flameproof generator according to claim 1, characterized in that the front end of the end cover (3) is supported against a stator (4) fixedly mounted on the inner wall of the motor housing (1).
3. A flameproof generator according to claim 2, characterized in that the front end of the end cover (3) is provided with a mounting groove (32) into which one side of the rotor (2) can extend.
4. The flameproof generator of claim 1, wherein a stop ring (5) is installed in the port (11), the outer wall of the stop ring (5) is connected with the inner wall of the motor shell (1) in a threaded fit manner, and the stop ring (5) abuts against the end face of the rear side of the end cover (3).
5. A flameproof generator according to claim 4, characterized in that the stop ring (5) is provided with mounting holes (51) in which bolts (6) are mounted, the bolts (6) bearing against the end face of the rear side of the end cover (3).
6. A flameproof generator according to claim 4, characterized in that the stop ring (5) is located in a receiving groove (33) provided on the rear end face of the end cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921276394.8U CN210041514U (en) | 2019-08-07 | 2019-08-07 | Flame-proof generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921276394.8U CN210041514U (en) | 2019-08-07 | 2019-08-07 | Flame-proof generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210041514U true CN210041514U (en) | 2020-02-07 |
Family
ID=69350808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921276394.8U Active CN210041514U (en) | 2019-08-07 | 2019-08-07 | Flame-proof generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210041514U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112234740A (en) * | 2020-09-22 | 2021-01-15 | 青岛中加特电气股份有限公司 | Fixing device for motor rotating shaft and motor thereof |
-
2019
- 2019-08-07 CN CN201921276394.8U patent/CN210041514U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112234740A (en) * | 2020-09-22 | 2021-01-15 | 青岛中加特电气股份有限公司 | Fixing device for motor rotating shaft and motor thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 3138, Shiji Avenue, Huangdao District, Qingdao, Shandong Province Patentee after: Qingdao zhonggate Electric Co., Ltd Address before: 266400 Century Avenue, Huangdao District, Qingdao, Shandong Province, No. 662 Patentee before: QINGDAO CCS VFD MOTOR Co.,Ltd. |
|
| CP03 | Change of name, title or address |