Flange end cover permanent magnet motor bearing temperature measurement and oil injection and discharge structure
By designing a single-layer integrated flange end cap and adopting a temperature measurement line and oil injection and discharge pipe structure, the problems of high cost and insufficient drilling of deep holes of vertical permanent magnet motors are solved, and low-cost and high-efficiency temperature monitoring is achieved and grease management, which improves the strength of the motor end cap.
Patent Information
- Application Number
- CN202323312281.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-06
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2033-12-06
AI Technical Summary
When measuring the temperature and filling the oil, the flange end cover of the existing vertical permanent magnet motors is low in temperature and injecting and discharging the oil. Due to the high cost and difficulty of drilling deep holes, the end covers of low-speed and high-torque motors are insufficient, which cannot meet the actual needs.
A flange end cap permanent magnet motor bearing temperature measurement and oil discharge structure is designed, and a single-layer integrated flange end cap is adopted. By setting cylindrical rings, bosses, reinforcement ribs, and temperature measurement and discharge lines on the end cap body Holes, oil injection pipe grooves and oil drain pipe grooves use temperature measurement lines, temperature measurement probes, oil injection pipes and oil drain pipes for temperature monitoring and grease injection and discharge, replacing the traditional deep-hole structure.
It reduces production costs, improves production efficiency, and increases the strength of the end cap through the reinforcement structure, meeting the needs of low-speed and high-torque motors.
Smart Images
Figure CN222301600U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of permanent magnet motors, and in particular relates to a temperature measuring and oil filling and draining structure for a flange end cover permanent magnet motor bearing. Background Art
[0002] In recent years, with the continuous development of rare earth permanent magnet technology, permanent magnet synchronous motors have become more and more ideal drive motors for modern industrial sectors. Permanent magnet synchronous motors can be used in conjunction with variable frequency speed regulation devices, and have the advantages of excellent speed regulation performance, good energy saving effect, low maintenance, and a wide range of applications. They are now widely used in household appliances, textiles, papermaking, printing, cement, coal, metallurgy and other industries.
[0003] There are two installation methods for permanent magnet motors: horizontal and vertical. For vertical motors, the output end cover is often connected to the fixed support by a flange. Since the fixed support blocks the temperature measurement cable and the oil injection and drainage pipe, it is necessary to drill radial deep holes on the outer circle of the end cover to assist in temperature measurement and oil injection and drainage. However, due to the high cost and difficulty of drilling deep holes, conventional motors use double-layer flanges and middle reinforcement to avoid this. But for low-speed, high-torque permanent magnet motors, this type of end cover is often not strong enough to meet actual needs. Summary of the invention
[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a flange end cover permanent magnet motor bearing temperature measurement and oil injection and discharge structure.
[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a flange end cover permanent magnet motor bearing temperature measurement and oil injection and discharge structure, including a flange end cover, a bearing temperature measurement structure and an oil injection and discharge structure, the flange end cover includes an end cover body, a cylindrical ring, a first boss, a second boss, a first reinforcing rib, a second reinforcing rib, a temperature measurement wiring hole, an oil injection pipe groove, an oil discharge pipe groove, an end cover oil injection hole and an end cover oil discharge hole;
[0006] The end cover body is a circular flat plate with an axial hole in the center and cylindrical rings around the axial hole. The cylindrical ring is provided with an end cover oil filling hole and an end cover oil draining hole. A first boss is provided on the inner plane of the end cover body outside the cylindrical ring, and first reinforcing ribs are evenly distributed circumferentially between the inner circular surface of the first boss and the outer circular surface of the cylindrical ring, and a temperature measurement wiring hole is provided on the end cover body outside the first boss; a second boss is provided on the outer plane of the end cover body, and second reinforcing ribs are evenly distributed circumferentially at the root of the inner circular surface of the second boss, and an oil filling pipe groove and an oil draining pipe groove are provided on the second boss.
[0007] As a further preferred embodiment of the present invention, the first boss is distributed in a circular ring in the middle of the inner plane of the end cover body, and the outer circular surface of the first boss and the inner plane of the end cover body form a first stop to connect the housing.
[0008] As a further preferred embodiment of the present invention, a second stop for connecting to a fixed support is provided on the outer side of the outer plane of the second boss.
[0009] As a further preferred embodiment of the present invention, the temperature measurement wiring hole is distributed between the outer cylindrical surface of the casing and the second stopper, and is opened axially outward from the inner plane of the end cover body.
[0010] As a further preferred embodiment of the present invention, the oil filling groove and the oil draining groove are radially opened inward from the outer cylindrical surface of the end cover and pass through the second boss, and the end cover oil filling hole and the end cover oil draining hole are axially opened on the cylindrical ring and pass through the inner and outer planes of the end cover.
[0011] As a further preferred embodiment of the present invention, the bearing temperature measurement structure includes a temperature measuring wire, a temperature measuring probe, a temperature measuring threaded hole, a bearing outer cover and a temperature measuring wire hole. The temperature measuring threaded hole is provided on the bearing outer cover. One end of the temperature measuring probe is installed in the temperature measuring threaded hole through an external thread, and the other end is connected to the temperature measuring wire. The temperature measuring wire is arranged radially outward along the outer plane of the end cover body and is led out from the temperature measuring wire hole.
[0012] As a further preferred embodiment of the present scheme, the oil injection and discharge structure comprises an oil injection pipe groove, an oil discharge pipe groove, an oil injection pipe, an oil discharge pipe, a bearing inner cover, a bearing outer cover, a bearing outer cover oil injection hole, a bearing outer cover oil discharge hole, an end cover oil injection hole, an end cover oil discharge hole, a bearing, a shaft and a bearing chamber, the oil injection pipe and the oil discharge pipe pass through the oil injection pipe groove and the oil discharge pipe groove respectively, and are radially inwardly installed in the bearing outer cover oil injection hole and the bearing outer cover oil discharge hole respectively, the bearing outer cover oil injection hole and the bearing outer cover oil discharge hole are arranged on the bearing outer cover, and the bearing outer cover oil injection hole and the bearing outer cover oil discharge hole are right-angled cylindrical holes, one end of which is respectively connected to the oil injection pipe and the oil discharge pipe, and the other end is respectively connected to the end cover oil injection hole and the end cover oil discharge hole, the end cover oil injection hole and the end cover oil discharge hole are connected to the bearing chamber, and the internal cavity wrapped by the bearing inner cover, the bearing outer cover, the end cover circular ring column, the bearing and the shaft constitutes the bearing chamber.
[0013] As a further preferred embodiment of the present invention, the end cover body is a casting or a steel plate welded part, the outer side of the end cover body is the motor shaft extension end, and the inner side of the end cover body is the motor non-shaft extension end.
[0014] As a further preferred embodiment of the present invention, the temperature measurement wiring hole does not pass through the second stop, and the size and depth of the hole are determined according to the actual wiring.
[0015] As a further preferred embodiment of the present invention, the oil filling hole and the oil drain hole of the bearing outer cover are threaded holes, which are respectively connected to the oil filling pipe and the oil drain pipe through threads; the oil filling pipe groove and the oil drain pipe groove are groove structures or hole structures, and the sizes are determined according to the sizes of the oil filling and drain pipes.
[0016] The beneficial effects of the utility model are:
[0017] On the one hand, by adopting the technical solution of the utility model, the bearing temperature measuring probe passes through the temperature measuring wiring hole of the end cover to the motor shaft extension end, and is installed on the bearing outer cover through threads to monitor the bearing temperature. This replaces the traditional solution of drilling deep holes in the outer circle of the flange end cover to place the temperature measuring probe for temperature measurement, thereby reducing production costs and improving production efficiency.
[0018] On the other hand, by adopting the technical solution of the utility model, the bearing grease flows into the bearing chamber through the oil filling pipe, the bearing outer cover oil filling hole and the end cover oil filling hole in turn to lubricate the bearing. When there is excess grease in the bearing chamber, it flows out through the end cover oil drain hole, the bearing outer cover oil drain hole and the oil drain pipe in turn. The utility model thickens the outer edge of the end cover to raise the installation stop of the motor fixing bracket, reserves the position of the oil filling and drain pipe grooves, and uses the oil filling and drain pipes to replace the traditional flange end cover deep holes, thereby reducing production costs and improving production efficiency. At the same time, the flange end cover adopted by the utility model is a single-layer integrated type, which can effectively improve the strength of the end cover compared to the traditional double-layer middle reinforcement solution.
[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic cross-sectional view of the end cover of the utility model with an AA section;
[0021] Figure 2 This is the overall view of the C-direction motor of the utility model;
[0022] Figure 3 This is a schematic diagram of the overall structure of the temperature measurement of the motor bearing with BB cross section of the utility model;
[0023] Figure 4 This is a schematic diagram of the overall structure of oil injection and drainage of an AA-section motor of the utility model.
[0024] Markings in the figure are: 1. second reinforcing rib; 2. second stopper; 3. second boss; 4. end cover body; 5. first stopper; 6. first boss; 7. first reinforcing rib; 8. cylindrical ring; 9. end cover oil filling hole; 10. end cover oil drain hole; 11. oil filling pipe groove; 12. oil filling pipe; 13. temperature measuring wire hole; 14. temperature measuring wire; 15. temperature measuring probe; 16. temperature measuring threaded hole; 17. oil drain pipe; 18. oil drain pipe groove; 19. bearing outer cover; 20. bearing inner cover; 21. bearing outer cover oil drain hole; 22. bearing outer cover oil filling hole; 23. bearing; 24. shaft; 25. bearing chamber. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] like Figure 1 and 2 As shown, a flange end cover permanent magnet motor bearing temperature measurement and oil injection and discharge structure includes a flange end cover, a bearing temperature measurement structure and an oil injection and discharge structure. The flange end cover includes an end cover body 4, a cylindrical ring 8, a first boss 6, a second boss 3, a first stop 5, a second stop 2, a first reinforcing rib 7, a second reinforcing rib 1, a temperature measurement wiring hole 13, an oil injection pipe groove 11, an oil discharge pipe groove 18, an end cover oil injection hole 9, an end cover oil discharge hole 10, etc. The end cover body 4 is a circular flat plate with an axial hole in the center and a cylindrical ring 8 around the axial hole. The first boss 6 is distributed in a circular shape in the middle of the inner plane of the end cover body 4. The outer cylindrical surface of the first boss 6 and the inner plane of the end cover body 4 constitute a first stop 5 to connect the casing. The first reinforcing ribs 7 are evenly distributed circumferentially between the inner cylindrical surface of the first boss 6 and the outer cylindrical surface of the cylindrical ring 8. The second boss 3 is distributed in a circular shape on the outside of the outer plane of the end cover body 4. The second stop 2 is located on the outside of the outer plane of the second boss 3 and is connected to a fixed support. The second reinforcing ribs 1 are evenly distributed circumferentially at the root of the inner cylindrical surface of the second boss 3. The temperature measurement wiring hole 13 is distributed between the outer cylindrical surface of the casing and the second stop 2, and is axially opened outward from the inner plane of the end cover body 4. The oil filling pipe groove 11 and the oil drain pipe groove 18 are radially opened inward from the outer cylindrical surface of the end cover and pass through the second boss 3. The end cover oil filling hole 9 and the end cover oil drain hole 10 are axially opened on the cylindrical ring 8 and pass through the inner and outer planes.
[0027] like Figure 3 As shown, the bearing temperature measurement structure includes a temperature measuring line 14, a temperature measuring probe 15, a temperature measuring threaded hole 16, a bearing outer cover 19, a temperature measuring wire hole 13, etc. One end of the temperature measuring probe 15 is installed in the temperature measuring threaded hole 16 through an external thread, and the other end is connected to the temperature measuring line 14. The temperature measuring line 14 is arranged radially outward along the outer plane of the end cover body 4 and is led out from the temperature measuring wire hole 13.
[0028] like Figure 4As shown, the oil filling and draining structure includes an oil filling pipe groove 11, an oil drain pipe groove 18, an oil filling pipe 12, an oil drain pipe 17, a bearing inner cover 20, a bearing outer cover 19, a bearing outer cover oil filling hole 22, a bearing outer cover oil drain hole 21, an end cover oil filling hole 9, an end cover oil drain hole 10, a bearing 23, a shaft 24, a bearing chamber 25, etc. The oil filling and draining pipes 12 and 17 pass through the oil filling and draining pipe grooves 11 and 18 and are radially inwardly installed in the bearing outer cover oil filling and draining holes 22 and 21 respectively. The oil drain holes 22 and 21 are right-angled cylindrical holes, one end of which is located on the outer circumferential surface of the bearing outer cover 19 and is respectively connected to the oil injection and drain pipes 12 and 17, and the other end is located on the inner plane of the bearing outer cover 19 and is respectively connected to the end cover oil injection and drain holes 9 and 10. The bearing inner and outer covers 20 and 19 are respectively connected to the inner and outer planes of the end cover circular ring column 8 by bolts. The internal cavity wrapped by the bearing inner and outer covers 20 and 19, the end cover cylindrical ring 8, the bearing 23 and the shaft 24 constitutes a bearing chamber 25.
[0029] In this embodiment, the flange end cover is round or square, and the material is a casting or a steel plate welded part.
[0030] In this embodiment, the outer side of the flange end cover is the shaft extension end of the motor, and the inner side of the flange end cover is the non-shaft extension end of the motor.
[0031] In this embodiment, the temperature measurement wiring hole 13 should avoid passing through the second stop 2 of the end cover, and the size and depth of the hole are determined according to the actual wiring.
[0032] In this embodiment, the oil injection and discharge holes 22 and 21 on the outer circumferential surface of the bearing outer cover 19 are threaded holes, which are connected to the oil injection and discharge pipes 12 and 17 respectively through threads.
[0033] In this embodiment, the oil injection and discharge pipe grooves 11 and 18 can be a groove structure or a hole structure, and the size of the groove (hole) is determined according to the size of the oil injection and discharge pipes 12 and 17.
[0034] In summary, the beneficial effects of the utility model are:
[0035] On the one hand, by adopting the technical solution of the utility model, the bearing temperature probe 15 passes through the temperature measurement wiring hole 13 of the end cover to reach the motor shaft extension end, and is installed on the bearing outer cover 19 through threads to monitor the bearing temperature, replacing the traditional solution of drilling deep holes in the outer circle of the flange end cover to place the temperature probe for temperature measurement, thereby reducing production costs and improving production efficiency.
[0036] On the other hand, by adopting the technical solution of the utility model, the bearing grease flows into the bearing chamber 25 through the oil filling pipe 12, the bearing outer cover oil filling hole 22 and the end cover oil filling hole 9 in turn to lubricate the bearing 23. When the grease in the bearing chamber 25 is excessive, it flows out through the end cover oil drain hole 10, the bearing outer cover oil drain hole 21 and the oil drain pipe 17 in turn. The utility model thickens the outer edge of the end cover to lift the motor fixing bracket installation stop 2, reserves the positions of the injection and drain pipe grooves 11 and 18, and uses the injection and drain pipes 12 and 17 to replace the traditional flange end cover deep holes, thereby reducing production costs and improving production efficiency. At the same time, the flange end cover adopted by the utility model is a single-layer integrated type, which can effectively improve the strength of the end cover compared to the traditional double-layer middle reinforcement solution.
[0037] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the above embodiments do not limit the protection scope of the utility model in any form, and all technical solutions obtained by equivalent replacement and the like fall within the protection scope of the utility model.
[0038] The parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art.
Claims
1. A flange end cover permanent magnet motor bearing temperature measurement and oil injection and discharge structure, comprising a flange end cover, a bearing temperature measurement structure and an oil injection and discharge structure, characterized in that: The flange end cover comprises an end cover body (4), a cylindrical ring (8), a first boss (6), a second boss (3), a first reinforcing rib (7), a second reinforcing rib (1), a temperature measurement cable hole (13), an oil filling pipe groove (11), an oil drain pipe groove (18), an end cover oil filling hole (9) and an end cover oil drain hole (10); The end cover body (4) is a circular flat plate, the center of which is provided with an axial hole, and a cylindrical ring (8) is provided around the axial hole. The cylindrical ring (8) is provided with an end cover oil filling hole (9) and an end cover oil drain hole (10). A first boss (6) is provided on the inner plane of the end cover body (4) outside the cylindrical ring (8), and first reinforcing ribs (7) are evenly distributed circumferentially between the inner circular surface of the first boss (6) and the outer circular surface of the cylindrical ring (8), and a temperature measurement wiring hole (13) is provided on the end cover body (4) outside the first boss (6); a second boss (3) is provided on the outer plane of the end cover body (4), and second reinforcing ribs (1) are evenly distributed circumferentially at the root of the inner circular surface of the second boss (3), and an oil filling pipe groove (11) and an oil drain pipe groove (18) are provided on the second boss (3).
2. A flange end cover permanent magnet motor bearing temperature measurement and oil injection and discharge structure according to claim 1, characterized in that: The first boss (6) is distributed in a circular ring in the middle of the inner plane of the end cover body (4); the outer circular surface of the first boss (6) and the inner plane of the end cover body (4) form a first stop (5) for connecting to the housing.
3. The flange end cover permanent magnet motor bearing temperature measurement and oil injection and discharge structure according to claim 1 is characterized in that: A second stop (2) for connecting to a fixed support is provided on the outer side of the outer plane of the second boss (3).
4. A flange end cover permanent magnet motor bearing temperature measurement and oil injection and discharge structure according to claim 3, characterized in that: The temperature measurement wiring hole (13) is distributed between the outer cylindrical surface of the casing and the second stop (2), and is opened axially outward from the inner plane of the end cover body (4).
5. The flange end cover permanent magnet motor bearing temperature measurement and oil injection and discharge structure according to claim 1 is characterized in that: The oil filling pipe groove (11) and the oil drain pipe groove (18) are radially opened inward from the outer cylindrical surface of the end cover and penetrate the second boss (3); the end cover oil filling hole (9) and the end cover oil drain hole (10) are axially opened on the cylindrical ring (8) and penetrate the inner and outer planes of the end cover.
6. The flange end cover permanent magnet motor bearing temperature measurement and oil injection and discharge structure according to claim 1 is characterized in that: The bearing temperature measurement structure comprises a temperature measuring wire (14), a temperature measuring probe (15), a temperature measuring threaded hole (16), a bearing outer cover (19) and a temperature measuring wire hole (13); the temperature measuring threaded hole (16) is arranged on the bearing outer cover (19); one end of the temperature measuring probe (15) is installed in the temperature measuring threaded hole (16) through an external thread, and the other end is connected to the temperature measuring wire (14); the temperature measuring wire (14) is arranged radially outward along the outer plane of the end cover body (4) and is led out from the temperature measuring wire hole (13).
7. The flange end cover permanent magnet motor bearing temperature measurement and oil injection and discharge structure according to claim 1 is characterized in that: The oil injection and discharge structure comprises an oil injection pipe groove (11), an oil discharge pipe groove (18), an oil injection pipe (12), an oil discharge pipe (17), a bearing inner cover (20), a bearing outer cover (19), a bearing outer cover oil injection hole (22), a bearing outer cover oil discharge hole (21), an end cover oil injection hole (9), an end cover oil discharge hole (10), a bearing (23), a shaft (24) and a bearing chamber (25). The oil injection pipe (12) and the oil discharge pipe (17) respectively pass through the oil injection pipe groove (11) and the oil discharge pipe groove (18), and are respectively installed radially inwardly in the bearing outer cover oil injection hole (22) and the bearing outer cover oil discharge hole (21). The bearing outer cover The oil filling hole (22) and the bearing outer cover oil drain hole (21) are arranged on the bearing outer cover (19), and the bearing outer cover oil filling hole (22) and the bearing outer cover oil drain hole (21) are right-angle cylindrical holes, one end of which is respectively connected to the oil filling pipe (12) and the oil drain pipe (17), and the other end is respectively connected to the end cover oil filling hole (9) and the end cover oil drain hole (10), the end cover oil filling hole (9) and the end cover oil drain hole (10) are communicated with the bearing chamber (25), and the internal cavity surrounded by the bearing inner cover (20), the bearing outer cover (19), the cylindrical ring (8), the bearing (23) and the shaft (24) constitutes the bearing chamber (25).
8. The flange end cover permanent magnet motor bearing temperature measurement and oil injection and discharge structure according to claim 1 is characterized in that: The end cover body (4) is a casting or a steel plate welded part; the outer side of the end cover body (4) is the motor shaft extension end, and the inner side of the end cover body (4) is the motor non-shaft extension end.
9. The flange end cover permanent magnet motor bearing temperature measurement and oil injection and discharge structure according to claim 1 is characterized in that: The temperature measurement cable hole (13) does not pass through the second stop (2).
10. The flange end cover permanent magnet motor bearing temperature measurement and oil injection and discharge structure according to claim 7, characterized in that: The bearing outer cover oil filling hole (22) and the bearing outer cover oil drain hole (21) are threaded holes, respectively connected to the oil filling pipe (12) and the oil drain pipe (17) through threads; the oil filling pipe groove (11) and the oil drain pipe groove (18) are groove structures or hole structures.