Oil injection and discharge structure of motor
By setting up oil injection pipes and oil discharge pipes for oil discharge plugs on the motor end cover and canceling the bearing outer cover, the problem of inconvenience in oil injection and discharge of the motor is solved, and the integrity and protection of the motor structure are improved.
Patent Information
- Application Number
- CN202422220407.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The existing motors have low machining accuracy on the bearing cover, resulting in uneven contact surfaces, affecting the protection level, and inconvenient oil injection and discharge operation.
The end cover of the motor is equipped with an oil injection pipe connecting the bearing chamber and an oil discharge pipe with built-in oil discharge plug rake. The outer cover of the bearing is cancelled and a double oil discharge plug rake combined structure is adopted to ensure the convenience of oil injection and discharge operation and protection.
Without changing the external structure of the motor, the integrity of the motor is improved, and the convenience and protection level of oil injection and discharge operations are improved.
Smart Images
Figure CN223066911U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of motor oil injection and drainage, and particularly relates to a motor oil injection and drainage structure. Background Art
[0002] On the road of industrial economic development, motors are indispensable important equipment. The bearings of motors are diversified in terms of oil injection and drainage structures. Medium-sized motors need to inject and drain oil on the bearing outer cover and end cover. When the motor is assembled, both sides of the bearing chamber of the end cover are closed at both ends by the bearing inner cover and the bearing outer cover respectively. When the protection level requirement of the motor is high, especially when the machining accuracy of the end face of the bearing outer cover is not high, the contact surface does not fit smoothly, resulting in a decrease in the protection level of the motor. Summary of the Invention
[0003] Object of the Invention: In order to overcome the deficiencies in the prior art, the utility model provides a motor oil injection and drainage structure. By setting an oil injection pipe communicating with the bearing chamber and an oil drainage pipe with an internal oil drainage plug rake, the integrity of the motor structure is improved, and the convenience of oil injection and drainage operations and the protection of the motor are enhanced.
[0004] Technical Solution: To achieve the above object, a motor oil injection and drainage structure of the utility model includes a motor. An oil injection pipe and an oil drainage pipe communicating with the bearing chamber of the motor are arranged on the end cover of the motor. A plug is installed at the pipe orifice of the oil drainage pipe, and at least one of the plugs is connected with an oil drainage rake located in the oil drainage pipe to form an oil drainage plug rake. The end of the oil drainage rake is bent to form an oil drainage rake hook located at the front end of the oil drainage plug rake.
[0005] Further, the oil injection pipe is vertically arranged and communicated at the top of the bearing chamber, and the oil drainage pipe is horizontally arranged and communicated at the bottom of the bearing chamber.
[0006] Further, the oil drainage pipe is integrally formed with the end cover, and the bearing chamber is communicated with the pipe body part of the oil drainage pipe.
[0007] Further, when plugs at both pipe orifices of the oil drainage pipe are connected with oil drainage rakes, a double-row oil drainage plug rake combination structure is formed. The lengths of the oil drainage rakes of the two oil drainage plug rakes in the double-row oil drainage plug rake combination structure are different, forming a long oil drainage plug rake and a short oil drainage plug rake respectively located at the two pipe orifices of the oil drainage pipe.
[0008] Further, the oil drainage rake hook forms an acute angle α with the main body of the rake of the oil drainage rake.
[0009] Further, the hook surface of the oil drainage rake hook is an inclined plane structure.
[0010] Further, the oil injection pipe is detachably installed through a threaded hole opened on the end cover to conduct the bearing chamber, and the oil injection pipe has a pluggable oil injection plug.
[0011] Further, the plug is a one - groove threaded plug structure thread - connected to the corresponding pipe orifice of the oil drain pipe.
[0012] Further, the plug of the oil drain plug rake is detachably installed with the oil drain rake.
[0013] Beneficial effects: Through the arrangement of the oil injection pipe connecting the bearing chamber and the oil drain pipe with an internal oil drain plug rake, without changing the external structure of the motor, the bearing outer cover is cancelled, improving the integrity of the motor structure, enhancing the convenience of oil injection and drainage operations, ensuring the protection level of the motor, and improving the protection performance of the motor. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] FIG Figure 1 is a schematic structural view of the motor of the present utility model from the axial perspective;
[0015] FIG Figure 2 is a schematic structural view of the oil drain plug rake. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0016] The following further describes the present utility model with reference to the drawings.
[0017] As shown in FIG Figure 1 and FIG Figure 2 A motor oil injection and drainage structure includes a motor 1. An oil injection pipe 4 and an oil drain pipe 5 are provided on the end cover 2 of the motor 1 and are connected to the bearing chamber 3 of the motor 1. A plug 6 is installed at the pipe orifice of the oil drain pipe 5. At least one plug 6 is connected to an oil drain rake 7 located in the oil drain pipe 5 to form an oil drain plug rake 8. The end of the oil drain rake 7 is bent to form an oil drain rake hook 9 at the front end of the oil drain plug rake 8. Through the arrangement of the oil injection pipe 2 connecting the bearing chamber 3 and the oil drain pipe 5 with an internal oil drain plug rake 6, without changing the external structure of the motor, the bearing outer cover is cancelled, improving the integrity of the motor structure, enhancing the convenience of oil injection and drainage operations, ensuring the protection level of the motor, and improving the protection performance of the motor.
[0018] Among them, the oil injection pipe 4 is detachably installed through a threaded hole opened on the end cover 2 to conduct the bearing chamber 3, and the oil injection pipe 4 has a pluggable oil injection plug 10. When injecting oil, the oil injection plug 10 is opened and oil is injected through the oil injection pipe 4. The grease is guided to the bearing chamber 3, and the excess grease is guided into the oil drain pipe 5. The plug 6 is a one - groove threaded plug structure thread - connected to the corresponding pipe orifice of the oil drain pipe 5. The oil drain rake hook 9 forms an acute angle α with the main body of the rake of the oil drain rake 7. When draining oil, the plug 6 is removed and used as a handle to operate the oil drain plug rake 8 to take out the grease in the oil drain pipe 5 through the oil drain rake hook 9.
[0019] As shown in FIG Figure 1As shown, the oil injection pipe 4 is vertically connected and arranged at the top of the bearing chamber 3, and the oil drain pipe 5 is horizontally connected and arranged at the bottom of the bearing chamber 3. The oil drain pipe 5 is integrally formed with the end cover 2, and the bearing chamber 3 is communicated with the pipe body part of the oil drain pipe 5. The pipe orifices at both ends of the oil drain pipe 5 can drain oil. Based on this, in the present utility model, when the plugs 6 at the two pipe orifices of the oil drain pipe 5 are both connected with the oil drain rakes 7, a double-row oil drain plug rake combination structure is formed. The lengths of the oil drain rakes 7 of the two oil drain plug rakes 8 of the double-row oil drain plug rake combination structure are different, forming a long oil drain plug rake 8a and a short oil drain plug rake 8b respectively located at the two pipe orifices of the oil drain pipe 5. Both the long oil drain plug rake 8a and the short oil drain plug rake 8b can perform the oil draining operation. In the deep part of the oil drain pipe 5 that the short oil drain plug rake 8b cannot reach, the long oil drain plug rake 8a can be used to extend into the oil drain pipe 5 to take out the grease, making the oil draining more thorough and the operation more convenient.
[0020] As shown in the attached Figure 2 figure, in order to ensure the convenience and smoothness of the oil scooping by the oil drain rake hook 9, the hook surface 90 of the oil drain rake hook 9 is an inclined plane structure.
[0021] In the present utility model, the plug 6 of the oil drain plug rake 8 and the oil drain rake 7 are detachably installed, which is convenient for assembly and maintenance. A slotted head 11 is provided on the plug 6, which is convenient for installing or disassembling the oil drain plug rake 8 relative to the oil drain pipe 5 by using a slotted head screwdriver.
[0022] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.
Claims
1. An oil injection and drainage structure for a motor, characterized in that: It includes a motor (1). An oil injection pipe (4) and an oil drain pipe (5) which are communicated through a bearing chamber (3) of the motor (1) are arranged on an end cover (2) of the motor (1). A plug (6) is installed at the pipe orifice of the oil drain pipe (5). At least one of the plugs (6) is connected with an oil drain rake (7) located in the oil drain pipe (5) to form an oil drain plug rake (8). The end of the oil drain rake (7) is bent to form an oil drain rake hook (9) located at the front end of the oil drain plug rake (8).
2. The oil injection and drainage structure of an electric motor according to claim 1, wherein: The oil injection pipe (4) is vertically arranged and communicated at the top of the bearing chamber (3), and the oil drain pipe (5) is horizontally arranged and communicated at the bottom of the bearing chamber (3).
3. The oil injection and drainage structure of an electric motor according to claim 2, characterized in that: The oil drain pipe (5) is integrally formed with the end cover (2), and the bearing chamber (3) is communicated with the pipe body part of the oil drain pipe (5).
4. The oil injection and drainage structure of an electric motor according to claim 3, wherein: When the plugs (6) at the two pipe orifices of the oil drain pipe (5) are both connected with the oil drain rakes (7), a double-row oil drain plug rake combined structure is formed. The lengths of the oil drain rakes (7) of the two oil drain plug rakes (8) of the double-row oil drain plug rake combined structure are different, forming a long oil drain plug rake (8a) and a short oil drain plug rake (8b) respectively located at the two pipe orifices of the oil drain pipe (5).
5. The oil injection and drainage structure of an electric motor according to claim 3, wherein: The oil drain rake hook (9) forms an acute angle α with the rake body main body of the oil drain rake (7).
6. The oil injection and drainage structure of an electric motor according to claim 5, characterized in that: The hook surface (90) of the oil drain rake hook (9) is of an inclined plane structure.
7. The oil injection and drainage structure of an electric motor according to claim 1, wherein: The oil injection pipe (4) is detachably installed through a threaded hole opened on the end cover (2) to conduct the bearing chamber (3), and the oil injection pipe (4) is provided with a pluggable oil injection plug (10).
8. The oil injection and drainage structure of an electric motor according to claim 1, wherein: The plug (6) is a one-slot threaded plug structure threadedly connected to the corresponding pipe orifice of the oil drain pipe (5).
9. The oil injection and drainage structure of an electric motor according to claim 1, characterized in that: The plug (6) of the oil drain plug rake (8) is detachably installed with the oil drain rake (7).