End cover structure of three-phase asynchronous motor
By setting multiple sets of side heat dissipation ports and built-in filters on the end cover side of the three-phase asynchronous motor, combining the tight fit between the stability sleeve and the rotating shaft, as well as the fixed component design and heat dissipation fan configuration on the side of the end cover sleeve, the problem of difficulty in dissipating heat inside the motor is solved, achieving more efficient heat dissipation and longer service life.
Patent Information
- Application Number
- CN202421324508.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-06-12
AI Technical Summary
The internal heat dissipation speed of the end cover of the existing three-phase asynchronous motor is too slow, and due to the closed state, the internal and external air cannot flow, resulting in difficult internal heat dissipation of the motor in time, which can easily cause fever and faults and shorten the service life.
Design an end cap structure of a three-phase asynchronous motor, including setting up multiple sets of side heat dissipation ports on the sides of the end cap and a built-in filter to enhance air circulation; the stability sleeve is closely fitted with the shaft to improve the rotation stability of the shaft; fixing components are installed on the sides of the end cap sleeve to facilitate rapid disassembly and assembly; the heat dissipation fan is equipped with accelerating heat dissipation.
By enhancing the efficiency of air circulation and heat dissipation, the internal heat of the motor is effectively discharged, the service life of the motor is extended, the maintenance cost and time are reduced, and the working efficiency and reliability of the motor are improved.
Smart Images
Figure CN222654931U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of three-phase asynchronous motors, in particular to an end cover structure of a three-phase asynchronous motor. Background Art
[0002] With the rapid development of electrical automation, three-phase asynchronous motors are also being used more and more widely. Some motors are usually installed in a small sealed space. Since the air in the sealed space is not easy to flow, the motor is prone to heat up after running for a long time, and it will cause various faults. The existing three-phase asynchronous motor end cover has good sealing and is easy to process.
[0003] In the related art, the existing motor end cover usually adopts the method of setting heat dissipation strips for rapid heat exchange and heat dissipation. The heat dissipation speed is too slow, and because the end cover is in a closed state, the air cannot flow inside and outside, and the heat inside the motor is still difficult to be dissipated in time, which often causes the motor to burn out, greatly shortening the service life of the motor and causing great economic losses to users. For this reason, we propose an end cover structure for a three-phase asynchronous motor.
[0004] The above information disclosed in this Background section is only for understanding the background of the present inventive concept and therefore it may contain information that does not constitute prior art. Utility Model Content
[0005] The utility model aims to provide an end cover structure of a three-phase asynchronous motor, so as to solve the problem that the end cover proposed in the above-mentioned background technology adopts a heat dissipation strip to quickly dissipate heat through heat exchange, but the heat dissipation speed is too slow. Since the end cover is in a closed state, the air inside and outside cannot flow, and the heat inside the motor is still difficult to be dissipated in time, which often leads to the burning of the motor, greatly shortening the service life of the motor and causing great economic losses to users.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] An end cover structure of a three-phase asynchronous motor comprises an end cover, a side heat dissipation port, an end cover sleeve and a fixing seat, wherein a plurality of side heat dissipation ports are symmetrically provided on the side of the end cover, a filter screen is fixedly installed inside the side heat dissipation port, a stabilizing sleeve is installed at the central position inside the end cover, a connecting rod is symmetrically integrally formed on the side of the stabilizing sleeve, a side of the connecting rod away from the stabilizing sleeve is connected and fixed to the inner wall of the end cover, a through hole is provided inside the stabilizing sleeve, a rotating shaft is penetrated through the through hole, and the upper end of the stabilizing sleeve is inside the end cover. A connecting sleeve is fitted on the part, the lower end of the connecting sleeve is detachably connected to the rotating shaft, the upper end of the connecting sleeve is detachably connected and fixed to the transmission shaft, the upper end of the end cover is detachably installed with an end cover sleeve, a fixing seat is installed at the central position of the inner upper end of the end cover sleeve, and a plurality of connecting plates are symmetrically integrally formed on the side of the fixing seat, one end of the connecting plate away from the fixing seat is connected and fixed to the inner wall of the end cover sleeve, a movable sleeve is installed at the central position of the lower end of the fixing seat, and the upper end of the transmission shaft rotates in the movable sleeve.
[0008] In some embodiments, a plurality of side fixing assemblies are symmetrically installed on the lower end of the side surface of the end cover sleeve, and the side fixing assemblies include a fixing frame, a fixing rod and a spring, and one side of the fixing frame is welded and fixed on the side wall surface of the end cover sleeve.
[0009] In some embodiments, a fixing rod is provided through the fixing frame, and two sets of side fixing plates are symmetrically welded on the side of the fixing rod inside the fixing frame, and a spring is connected and fixedly provided on the side of the side fixing plate away from the end cover sleeve.
[0010] In some embodiments, one end of the spring away from the end cover sleeve is connected and fixed to the inner wall of the fixed frame, one end of the fixing rod away from the end cover sleeve is welded with a handle, and the other end of the fixing rod passes through the end cover sleeve and is clamped and connected to the side wall of the end cover.
[0011] In some embodiments, two sets of fixing plates are symmetrically welded and installed on the lower end of the side surface of the end cover, and fixing holes are opened on the fixing plates.
[0012] In some embodiments, a protective net is fixedly installed on the upper end of the end cover sleeve, mounting holes are opened on the side of the connecting sleeve at the corresponding positions of the rotating shaft and the transmission shaft, and multiple groups of cooling fans are symmetrically installed in the central position of the side of the connecting sleeve.
[0013] The beneficial effects of the utility model are:
[0014] By setting multiple sets of side heat dissipation vents on the side of the end cover and building in filters, not only the air circulation inside and outside the motor is enhanced and the internal heat of the motor is effectively discharged, but also the invasion of debris is prevented to protect the cleanliness and safety of the inside of the motor. The design of the stabilizing sleeve and the motor shaft tightly fitting improves the stability of the shaft during rotation, reduces vibration, and extends the service life of the motor. The fixed component design on the side of the end cover sleeve enables the end cover sleeve to be quickly disassembled and assembled, which greatly facilitates the maintenance and component replacement of the equipment and reduces maintenance costs and time. The connection between the fixed rod and the end cover is equipped with an anti-slip sleeve to increase the friction between the two and improve the stability of the overall structure. At the same time, the handle design at the end of the fixed rod and the boltless clamping connection method simplify the assembly process and improve the convenience of operation. The setting of the protective net provides effective physical protection for the inside of the motor while ensuring the unobstructed heat dissipation channel. The configuration of the cooling fan further accelerates the dissipation of heat, effectively controls the operating temperature of the motor, and improves the working efficiency and reliability of the motor. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic structural diagram of an end cover structure of a three-phase asynchronous motor proposed by the utility model;
[0016] Figure 2 This is a diagram showing the internal structure of an end cover of an end cover structure of a three-phase asynchronous motor proposed by the utility model;
[0017] Figure 3 A schematic diagram of an end cover sleeve structure of an end cover structure of a three-phase asynchronous motor proposed by the utility model;
[0018] Figure 4 A schematic diagram of a connecting sleeve structure of an end cover structure of a three-phase asynchronous motor proposed by the utility model;
[0019] Figure 5 The utility model provides a schematic diagram of the side fixing assembly structure of the end cover structure of a three-phase asynchronous motor.
[0020] In the figure: 1 is the end cover, 2 is the side heat dissipation port, 3 is the filter screen, 4 is the fixing plate, 5 is the fixing hole, 6 is the end cover sleeve, 7 is the connecting plate, 8 is the fixing seat, 9 is the side fixing assembly, 10 is the connecting rod, 11 is the stabilizing sleeve, 12 is the through hole, 13 is the protective net, 14 is the heat dissipation fan, 15 is the connecting sleeve, 16 is the mounting hole, 17 is the fixing rod, 18 is the fixing frame, 19 is the spring, 20 is the side fixing plate, and 21 is the handle. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0022] It should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and 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 therefore cannot be understood as a limitation on the utility model.
[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0024] Reference Figure 1 , 2 3. An end cover structure of a three-phase asynchronous motor, comprising an end cover 1, a side heat dissipation port 2, an end cover sleeve 6 and a fixing seat 8. A plurality of side heat dissipation ports 2 are symmetrically provided on the side of the end cover 1, a filter screen 3 is fixedly installed inside the side heat dissipation port 2, a stabilizing sleeve 11 is installed at the central position inside the end cover 1, a connecting rod 10 is symmetrically integrally formed on the side of the stabilizing sleeve 11, a side of the connecting rod 10 away from the stabilizing sleeve 11 is connected and fixed to the inner wall of the end cover 1, a through hole 12 is provided inside the stabilizing sleeve 11, a rotating shaft is penetrated through the through hole 12, a connecting sleeve 15 is fitted on the upper end of the stabilizing sleeve 11 inside the end cover 1, a lower end of the connecting sleeve 15 is detachably connected to the rotating shaft, and the connecting sleeve 1 The upper end of 5 is detachably connected and fixed to the transmission shaft, the upper end of the end cover 1 is detachably installed with an end cover sleeve 6, a fixing seat 8 is installed at the central position of the upper end of the inner part of the end cover sleeve 6, and the side of the fixing seat 8 is symmetrically integrally formed with multiple groups of connecting plates 7, one end of the connecting plate 7 away from the fixing seat 8 is connected and fixed to the inner wall of the end cover sleeve 6, and a movable sleeve is installed at the central position of the lower end of the fixing seat 8. The upper end of the transmission shaft rotates in the movable sleeve, and the air circulation inside and outside the motor is enhanced through the side heat dissipation port 2, which can effectively discharge the heat inside the motor, the inner wall of the stabilizing sleeve 11 is fitted with the motor shaft, and the stability of the shaft when rotating is improved. The filter screen 3 provided can effectively prevent debris from entering the motor.
[0025] When the embodiments of the present utility model are implemented, Figure 1 , 5As shown, a plurality of side fixing components 9 are symmetrically installed at the lower end of the side of the end cover sleeve 6. The side fixing components 9 include a fixing frame 18, a fixing rod 17 and a spring 19. One side of the fixing frame 17 is welded and fixed on the side wall of the end cover sleeve 6. Through the side fixing components 9, the end cover sleeve 6 can be quickly disassembled and assembled, which facilitates the maintenance and replacement of the end cover sleeve 6.
[0026] When the embodiments of the present utility model are implemented, Figure 1 , 5 As shown, a fixing rod 17 is provided through the fixing frame 18, and two groups of side fixing plates 20 are symmetrically welded inside the fixing frame 18 on the side of the fixing rod 17, and a spring 19 is connected and fixedly provided on the side of the side fixing plate 20 away from the end cover sleeve 6, and the end of the spring 19 away from the end cover sleeve 6 is connected and fixed to the inner wall of the fixing frame 18, and a handle 21 is welded on the end of the fixing rod 17 away from the end cover sleeve 6, and the other end of the fixing rod 17 passes through the end cover sleeve 6 and is connected to the side wall of the end cover 1, without bolts, and is easy to disassemble and assemble. An anti-slip sleeve is provided at the connecting part of the fixing rod 17 and the end cover 1, which effectively increases the friction between the fixing rod 17 and the end cover 1 and improves stability.
[0027] When the embodiments of the present utility model are implemented, Figure 1 , 3 As shown in Figure 4, two groups of fixing plates 4 are symmetrically welded and installed on the lower end of the side of the end cover 1, and fixing holes 5 are opened on the fixing plates 4. A protective net 13 is fixedly covered and installed on the upper end of the end cover sleeve 6. Mounting holes 16 are opened on the side of the connecting sleeve 15 at the corresponding positions of the rotating shaft and the transmission shaft. A plurality of cooling fans 14 are symmetrically installed in the central position of the side of the connecting sleeve 15. The protective net 13 is a wire protective net, which can effectively protect the inside of the motor while ensuring the heat dissipation effect. The cooling fan 14 rotates under the drive of the rotating shaft to quickly discharge the heat inside the motor, effectively reducing the internal temperature of the motor.
[0028] In this embodiment,
[0029] Start and run: When the motor starts, the shaft starts to rotate. Since the shaft passes through the through hole 12 of the stabilizing sleeve 11 and fits closely with the inner wall thereof, the stability during the rotation is ensured. Meanwhile, the connecting sleeve 15 is detachably connected with the shaft and the transmission shaft through the mounting hole 16 and bolts, thus realizing effective transmission of power.
[0030] Heat dissipation process: As the temperature inside the motor rises, the heat is naturally convected to the outside of the motor through the metal thermal conductivity of the stabilizing sleeve 11 and the end cover 1, as well as the design of the side heat dissipation port 2. The heat dissipation fan 14 is located in the center of the side of the connecting sleeve 15. As the shaft rotates, it accelerates the flow of surrounding air, further enhancing the heat dissipation effect. The hot air is discharged from the side heat dissipation port 2, and the cold air is replenished from the outside, forming an efficient cooling cycle.
[0031] Filtration and protection: When the motor is running, the external air enters through the side heat dissipation port 2, and first passes through the filter 3, effectively blocking dust and impurities from entering the motor, keeping the motor clean and reducing wear and failure.
[0032] Convenient maintenance: If the end cover 6 needs to be inspected or replaced, it can be easily and quickly disassembled and assembled through the side fixing assembly 9. The fixing rod 17 cooperates with the spring 19 and the handle 21, so that the installation and removal of the end cover 6 does not require tools, which is simple and quick, and the anti-slip sleeve on the fixing rod 17 enhances the stability of the connection;
[0033] Safety protection: The protective net 13 on the end cover sleeve 6 provides additional physical protection for the motor to prevent the intrusion of external objects, while not affecting the heat dissipation effect, ensuring the safety of the motor operation.
[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An end cover structure of a three-phase asynchronous motor, comprising an end cover (1), a side heat dissipation port (2), an end cover sleeve (6) and a fixing seat (8), characterized in that: The side of the end cover (1) is symmetrically provided with a plurality of side heat dissipation openings (2), a filter screen (3) is fixedly installed inside the side heat dissipation opening (2), a stabilizing sleeve (11) is installed at the central position inside the end cover (1), a connecting rod (10) is symmetrically integrally formed on the side of the stabilizing sleeve (11), the side of the connecting rod (10) away from the stabilizing sleeve (11) is connected and fixed to the inner wall of the end cover (1), a through hole (12) is provided inside the stabilizing sleeve (11), a rotating shaft is penetrated through the through hole (12), and a connecting sleeve is fitted on the upper end of the stabilizing sleeve (11) inside the end cover (1). (15), the lower end of the connecting sleeve (15) is detachably connected to the rotating shaft, the upper end of the connecting sleeve (15) is detachably connected and fixed to the transmission shaft, the upper end of the end cover (1) is detachably installed with an end cover sleeve (6), a fixing seat (8) is installed at the central position of the upper end of the inner part of the end cover sleeve (6), and the side of the fixing seat (8) is symmetrically integrally formed with multiple groups of connecting plates (7), one end of the connecting plate (7) away from the fixing seat (8) is connected and fixed to the inner wall of the end cover sleeve (6), and a movable sleeve is installed at the central position of the lower end of the fixing seat (8), and the upper end of the transmission shaft rotates in the movable sleeve.
2. The end cover structure of a three-phase asynchronous motor according to claim 1, characterized in that: A plurality of side fixing assemblies (9) are symmetrically mounted on the lower end of the side surface of the end cover sleeve (6), wherein the side fixing assemblies (9) comprise a fixing frame (18), a fixing rod (17) and a spring (19), and one side of the fixing frame (18) is welded and fixedly mounted on the side wall surface of the end cover sleeve (6).
3. The end cover structure of a three-phase asynchronous motor according to claim 2, characterized in that: A fixing rod (17) is provided through the fixing frame (18), and two groups of side fixing plates (20) are symmetrically welded on the side of the fixing rod (17) inside the fixing frame (18), and a spring (19) is connected and fixedly provided on the side of the side fixing plate (20) away from the end cover sleeve (6).
4. The end cover structure of a three-phase asynchronous motor according to claim 2, characterized in that: One end of the spring (19) away from the end cover sleeve (6) is connected and fixed to the inner wall of the fixing frame (18); one end of the fixing rod (17) away from the end cover sleeve (6) is welded with a handle (21); the other end of the fixing rod (17) penetrates the end cover sleeve (6) and is clamped and connected to the side wall of the end cover (1).
5. The end cover structure of a three-phase asynchronous motor according to claim 1, characterized in that: Two groups of fixing plates (4) are symmetrically welded and installed at the lower end of the side surface of the end cover (1), and fixing holes (5) are opened on the fixing plates (4).
6. The end cover structure of a three-phase asynchronous motor according to claim 1, characterized in that: A protective net (13) is fixedly mounted on the upper end of the end cover sleeve (6), mounting holes (16) are provided on the side of the connecting sleeve (15) at positions corresponding to the rotating shaft and the transmission shaft, and a plurality of cooling fans (14) are symmetrically mounted at the central position of the side of the connecting sleeve (15).