A brushless generator lubrication device

Abstract

The utility model discloses a kind of brushless generator lubricating device, including motor shell, motor front cover, motor rear cover and bearing assembly, the motor front cover, motor rear cover is respectively installed at the front and rear ends of motor shell, the bearing assembly includes motor spindle and bearing, the motor spindle is rotatably connected with motor front cover and motor rear cover by bearing, the inside of the motor front cover and motor rear cover is uniformly provided with the bearing mounting cavity for installing bearing, first flow limiting pipe is provided on the motor front cover and is communicated with bearing mounting cavity, second flow limiting pipe is provided on the motor rear cover and is communicated with bearing mounting cavity, another end of first flow limiting pipe and second flow limiting pipe is connected with oil tank, the bottom of bearing mounting cavity is connected with first oil drain pipe and second oil drain pipe.The utility model realizes the effective lubrication and heat dissipation of brushless generator bearing and transmission component, effectively reduce the temperature of bearing and transmission component, prolong the service life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of brushless generator technology, specifically to a brushless generator lubrication device. Background Technology

[0002] When brushless generators operate at high speeds, the bearings and transmission components generate a large amount of heat due to friction. Traditional grease lubrication methods are ineffective at dissipating this heat, easily leading to grease failure, accelerated bearing wear, and even demagnetization and coil aging. Furthermore, existing lubrication systems often rely on manual lubrication, resulting in frequent maintenance and the risk of oil leaks. For example, in brushless generators used in micro turbojet engines, traditional grease-lubricated bearings can only maintain their operation for a few minutes at speeds of 100,000 rpm before failing. Utility Model Content

[0003] The purpose of this utility model is to provide a solution to the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a brushless generator lubrication device, comprising a motor housing, a front cover, a rear cover, and a bearing assembly. The front cover and rear cover are respectively installed at the front and rear ends of the motor housing. The bearing assembly includes a motor spindle and bearings. The motor spindle is rotatably connected to the front cover and rear cover via the bearings. Both the front cover and rear cover have bearing mounting cavities for mounting the bearings. The front cover has a first flow-limiting pipe communicating with the bearing mounting cavity, and the rear cover has a second flow-limiting pipe communicating with the bearing mounting cavity. The other ends of the first and second flow-limiting pipes are connected to an oil storage tank. The bottom of the bearing mounting cavity is connected to a first oil drain pipe and a second oil drain pipe. The other ends of the first and second oil drain pipes are connected to an oil collection trough, which is connected to the oil storage tank via a circulation pump.

[0005] Preferably, a temperature sensor is embedded in the bearing mounting cavity, and a temperature control module is connected to the temperature sensor.

[0006] Preferably, valves are installed on the first and second flow limiting tubes, and the temperature control module controls the opening degree of the valves of the first and second flow limiting tubes.

[0007] Preferably, the oil collection trough is fixedly installed at the bottom of the motor housing, and a cooling fan is installed inside the oil collection trough, with the cooling fan located at the bottom of the oil collection trough.

[0008] Preferably, the bottom of the oil collection tank is fixedly provided with evenly distributed heat dissipation fins, and the cooling fan is located on one side of the heat dissipation fins.

[0009] Preferably, the oil storage tank is installed on the top of the motor housing, the circulating pump is installed on the oil storage tank, and a filter screen is installed inside the oil storage tank.

[0010] Preferably, the oil tank is provided with a lubricating oil filling port.

[0011] Preferably, a sealing device is provided on the motor spindle. The sealing device includes a stationary ring and a rotating ring. The stationary ring is installed on the front cover or rear cover of the motor, and the rotating ring is installed on the motor spindle. A sealing gap is formed between the stationary ring and the rotating ring to effectively prevent lubricating oil leakage.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This invention achieves effective lubrication and heat dissipation for the bearings and transmission components of a brushless generator. The device utilizes an oil reservoir to store lubricating oil, which is then introduced into the bearing mounting cavity through a first and second flow-limiting pipe to lubricate the bearing. Simultaneously, the lubricating oil in the bearing mounting cavity flows into an oil collection tank through a first and second oil drain pipe. After being cooled by a cooling fan and heat dissipation fins, the lubricating oil in the collection tank is pumped back into the oil reservoir by a circulating pump, forming a circulating lubrication system. This circulating lubrication method not only improves lubrication efficiency but also effectively reduces the temperature of the bearings and transmission components, extending the service life of the equipment.

[0014] 2. This invention also embeds a temperature sensor within the bearing mounting cavity and controls the valve openings of the first and second flow-limiting tubes via a temperature control module, achieving intelligent regulation of the lubricating oil. When the bearing temperature rises, the temperature control module automatically increases the valve opening, increasing the lubricating oil flow to improve heat dissipation. Conversely, when the bearing temperature decreases, the temperature control module decreases the valve opening, reducing the lubricating oil flow. This intelligent regulation method not only improves the automation level of the equipment but also further enhances its stability and reliability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the oil collection tank structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the oil storage tank structure of this utility model.

[0018] In the diagram: 1. Motor housing; 2. Motor front cover; 3. Motor rear cover; 4. Bearing assembly; 5. Motor spindle; 6. Bearing mounting cavity; 7. First flow restrictor; 8. Second flow restrictor; 9. First oil drain pipe; 10. Second oil drain pipe; 11. Oil collection tank; 12. Circulation pump; 13. Oil reservoir; 14. Temperature sensor; 15. Valve; 16. Cooling fan; 17. Heat dissipation fins; 18. Filter screen; 19. Lubricating oil filling port. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 This utility model provides a technical solution for a brushless generator lubrication device, comprising a motor housing 1, a front motor cover 2, a rear motor cover 3, and a bearing assembly 4. The front motor cover 2 and the rear motor cover 3 are respectively installed at the front and rear ends of the motor housing 1. The bearing assembly 4 includes a motor spindle 5 and bearings. The motor spindle 5 is rotatably connected to the front motor cover 2 and the rear motor cover 3 through the bearings. Both the front motor cover 2 and the rear motor cover 3 have bearing mounting cavities 6 for mounting bearings inside. The front motor cover 2 is provided with a first flow limiting pipe 7 communicating with the bearing mounting cavity 6. The rear motor cover 3 is provided with a second flow limiting pipe 8 communicating with the bearing mounting cavity 6. The other ends of the first flow limiting pipe 7 and the second flow limiting pipe 8 are connected to an oil storage tank 13. The bottom of the bearing mounting cavity 6 is connected to a first oil drain pipe 9 and a second oil drain pipe 10. The other ends of the first oil drain pipe 9 and the second oil drain pipe 10 are connected to an oil collection trough 11. The oil collection trough 11 is connected to the oil storage tank 13 through a circulation pump 12.

[0021] Furthermore, a temperature sensor 14 is embedded in the bearing mounting cavity 6, and a temperature control module is connected to the temperature sensor 14.

[0022] In this embodiment, the temperature control module is used to monitor the temperature inside the bearing mounting cavity 6 in real time. The temperature control module is connected to the oil reservoir 13. When the temperature rises abnormally, the temperature control module can control the oil reservoir 13 to release an appropriate amount of lubricating oil into the bearing mounting cavity 6 to enhance the lubrication effect and help dissipate heat, thereby further protecting the bearing assembly 4 from high temperature damage.

[0023] Furthermore, valves 15 are installed on the first flow limiting tube 7 and the second flow limiting tube 8, and the temperature control module controls the opening degree of valves 15 on the first flow limiting tube 7 and the second flow limiting tube 8.

[0024] In this embodiment, the temperature control module can flexibly adjust the flow rate of lubricating oil from the oil reservoir 13 into the bearing mounting cavity 6 by controlling the opening of valve 15. When the bearing assembly 4 is in normal working condition, valve 15 maintains a moderate opening to ensure a stable and adequate supply of lubricating oil, maintaining good lubrication of the bearing. When the temperature inside the bearing mounting cavity 6 rises abnormally, the temperature control module responds quickly, increasing the opening of valve 15 to increase the flow rate of lubricating oil, thereby enhancing the lubrication effect and heat dissipation capacity, effectively preventing the bearing assembly 4 from being damaged due to overheating. This intelligent flow control mechanism not only improves lubrication efficiency but also enhances the reliability and stability of the brushless generator lubrication device.

[0025] Furthermore, the oil collection tank 11 is fixedly installed at the bottom of the motor housing 1, and a cooling fan 16 is installed inside the oil collection tank 11. The cooling fan 16 is located at the bottom of the oil collection tank 11, and uniformly distributed heat dissipation fins 17 are fixedly provided at the bottom of the oil collection tank 11. The cooling fan 16 is located on one side of the heat dissipation fins 17.

[0026] In this embodiment, the operation of the cooling fan 16 is connected to the temperature control module. When the temperature inside the bearing mounting cavity 6 rises, the temperature control module can activate the cooling fan 16 to accelerate airflow and remove heat from the oil collection groove 11 and the heat dissipation fins 17, thereby achieving rapid heat dissipation. The uniform distribution of the heat dissipation fins 17 not only increases the heat dissipation area but also improves the heat dissipation efficiency. This design enables the brushless generator lubrication device to respond quickly and effectively reduce the temperature when facing high-temperature challenges, ensuring the stable operation of the bearing assembly 4 and the entire generator system.

[0027] Furthermore, the oil storage tank 13 is installed on the top of the motor housing 1, the circulating pump 12 is installed on the oil storage tank 13, a filter screen 18 is installed inside the oil storage tank 13, and a lubricating oil filling port 19 is provided on the oil storage tank 13.

[0028] In this embodiment, the filter screen 18 effectively intercepts impurities and particulate matter in the lubricating oil, ensuring the cleanliness of the lubricating oil and extending the service life of the bearing assembly 4. The design of the lubricating oil filling port 19 allows users to easily add lubricating oil, keeping the oil level in the oil tank 13 sufficient and ensuring the normal operation of the lubrication system.

[0029] Furthermore, a sealing device is provided on the motor spindle 5. The sealing device includes a stationary ring and a rotating ring. The stationary ring is installed on the front cover 2 or the rear cover 3 of the motor, and the rotating ring is installed on the motor spindle 5. A sealing gap is formed between the stationary ring and the rotating ring to effectively prevent lubricating oil leakage.

[0030] Working Principle: During operation, lubricating oil in the oil reservoir 13 enters the bearing mounting cavity 6 of the motor front cover 2 and the motor rear cover 3 to lubricate the bearing assembly 4. As the bearing assembly 4 rotates, some lubricating oil flows back to the oil collection tank 11 through the first oil drain pipe 9 and the second oil drain pipe 10. The cooling fan 16 and heat dissipation fins 17 in the oil collection tank 11 work together to cool the returning lubricating oil and lower its temperature. The cooled lubricating oil is then pumped back to the oil reservoir 13 by the circulation pump 12, forming a lubricating oil circulation. The temperature control module monitors the temperature inside the bearing mounting cavity 6 in real time and adjusts the opening of the valves 15 on the first flow limiting pipe 7 and the second flow limiting pipe 8 according to temperature changes, thereby controlling the flow rate of lubricating oil and ensuring that the bearing assembly 4 receives sufficient lubrication and heat dissipation. At the same time, the sealing device effectively prevents lubricating oil leakage and ensures the stable operation of the lubrication system.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A brushless generator lubrication device, comprising a motor housing (1), a motor front cover (2), a motor rear cover (3), and a bearing assembly (4), characterized in that: The motor front cover (2) and motor rear cover (3) are respectively installed at the front and rear ends of the motor housing (1). The bearing assembly (4) includes a motor spindle (5) and bearings. The motor spindle (5) is rotatably connected to the motor front cover (2) and motor rear cover (3) through the bearings. Both the motor front cover (2) and motor rear cover (3) are provided with bearing mounting cavities (6) for installing bearings. The motor front cover (2) is provided with a first flow limiting tube (7) that communicates with the bearing mounting cavity (6). The motor rear cover (3) is provided with a second flow limiting pipe (8) that communicates with the bearing mounting cavity (6). The other end of the first flow limiting pipe (7) and the second flow limiting pipe (8) is connected to an oil storage tank (13). The bottom of the bearing mounting cavity (6) is connected to a first oil drain pipe (9) and a second oil drain pipe (10). The other end of the first oil drain pipe (9) and the second oil drain pipe (10) is connected to an oil collection trough (11). The oil collection trough (11) is connected to the oil storage tank (13) through a circulation pump (12).

2. The brushless generator lubrication device according to claim 1, characterized in that, A temperature sensor (14) is embedded in the bearing mounting cavity (6), and a temperature control module is connected to the temperature sensor (14).

3. The brushless generator lubrication device according to claim 2, characterized in that, Valves (15) are installed on the first flow limiting tube (7) and the second flow limiting tube (8), and the temperature control module controls the opening degree of the valves (15) of the first flow limiting tube (7) and the second flow limiting tube (8).

4. The brushless generator lubrication device according to claim 1, characterized in that, The oil collection tank (11) is fixedly installed at the bottom of the motor housing (1), and a cooling fan (16) is installed inside the oil collection tank (11). The cooling fan (16) is located at the bottom of the oil collection tank (11).

5. A brushless generator lubrication device according to claim 4, characterized in that, The bottom of the oil collection tank (11) is fixedly provided with uniformly distributed heat dissipation fins (17), and the cooling fan (16) is located on one side of the heat dissipation fins (17).

6. The brushless generator lubrication device according to claim 5, characterized in that, The oil storage tank (13) is installed on the top of the motor housing (1), the circulating pump (12) is installed on the oil storage tank (13), and a filter screen (18) is installed inside the oil storage tank (13).

7. A brushless generator lubrication device according to claim 6, characterized in that, The oil storage tank (13) is provided with a lubricating oil filling port (19).

8. The brushless generator lubrication device according to claim 1, characterized in that, A sealing device is provided on the motor spindle (5). The sealing device includes a stationary ring and a rotating ring. The stationary ring is installed on the front cover (2) or the rear cover (3) of the motor, and the rotating ring is installed on the motor spindle (5). A sealing gap is formed between the stationary ring and the rotating ring to effectively prevent lubricating oil leakage.

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