A brushless motor bearing box device that is easy to disassemble and assemble

Abstract

In order to solve the problems of optimizing the fan transmission system, reducing the complexity of maintenance, and making the structure as compact as possible while saving costs, the present invention proposes a brushless motor bearing box device that is easy to disassemble and assemble, which directly connects the bearing box, the brushless permanent magnet motor and the fan impeller through an integrally formed fan main shaft, including a brushless permanent magnet motor and a bearing box, the fan main shaft is installed on the bearing box, passes through the bearing box, and is connected with the motor cone sleeve and the rotor in sequence; the fan main shaft transmits the torque to the fan impeller through the first keyway device, thereby driving the fan impeller to rotate and work accordingly; the inner hole of the motor cone sleeve is provided with a tapered surface, and the tapered surface cooperates with the tapered surface of the fan main shaft, which facilitates the precise positioning and installation and disassembly of the motor and the main shaft, and the motor cone sleeve is sleeved on the fan main shaft, and the fan main shaft is driven to rotate through the second keyway device provided in the inner hole. In order to facilitate disassembly and assembly, the impeller end bearing is designed to be 1‑2 models larger than the motor end bearing.

Description

Technical Field

[0001] The invention relates to the technical field of high-efficiency brushless permanent magnet technology, and more specifically to a brushless motor bearing box device that is easy to disassemble and assemble. Background Art

[0002] As a general-purpose machine with large quantity and wide application, fans generally have direct motor connection, direct coupling connection, and belt drive connection. The belt drive connection method is to indirectly connect the fan and the motor through a belt and a pulley, which will cause friction between the pulley and the belt. The energy loss caused by frictional heat and the slippage of the belt after fatigue elongation will seriously affect the efficiency. The direct motor connection has reduced energy consumption compared to the belt drive connection method, but for large-sized fans, the strength of the impeller supported by the motor bearing and the motor base alone will be insufficient, and the lubrication and cooling of the motor bearing will be insufficient. For the coupling connection, the efficiency will also be reduced due to the problem of concentricity. Therefore, it is very important to optimize the fan drive system, reduce the complexity of maintenance, and make the structure as compact as possible while saving costs. Summary of the invention

[0003] In view of this, in order to solve the problem of optimizing the fan transmission system, reducing the complexity of maintenance, making the structure as compact as possible and saving costs, the present invention proposes a brushless motor bearing box device that is easy to disassemble and assemble, and directly connects the bearing box body 4, the brushless permanent magnet motor 1 and the fan impeller 5 through an integrally formed fan main shaft 6, including a brushless permanent magnet motor 1 and a bearing box body 4, the fan main shaft 6 is installed on the bearing box body 4, passes through the bearing box body 4, and is connected to the motor cone sleeve 15 and the rotor 13 in sequence; the fan main shaft 6 passes through the first A keyway device 51 transmits torque to the fan impeller 5, thereby driving the fan impeller 5 to rotate; the inner hole of the motor cone sleeve 15 is provided with a tapered surface, the tapered surface matches the tapered surface of the fan main shaft 6 and the diameter of the inner hole is consistent with the diameter of the fan main shaft 6. This design facilitates the disassembly and assembly of the motor and the fan main shaft 6. The motor cone sleeve 15 is sleeved on the fan main shaft 6, and the fan main shaft 6 is driven to rotate through the second keyway device 17 provided in the inner hole; in order to facilitate disassembly and assembly, the impeller end bearing is designed to be 1-2 models larger than the motor end bearing.

[0004] A brushless motor bearing box device that is easy to disassemble and assemble, comprising a brushless permanent magnet motor 1, a fan main shaft 6 and a bearing box body 4, characterized in that: the brushless motor is composed of a motor housing 11 and a driving device, the driving device is located inside the motor housing 11, and the driving device comprises: a motor cone sleeve 15, a rotor 13 and a stator coil 14, the outside of the motor cone sleeve 15 is connected to the rotor 13, the outer ring of the rotor 13 is provided with a stator coil 14, the stator coil 14 is electrically connected to an external power supply 12, and the inner hole of the motor cone sleeve 15 is provided with a second keyway device 17 and a cone sleeve cone surface 16 The fan main shaft 6 is an integrally formed shaft. The input shaft of the fan main shaft 6 passes through the interior of the brushless permanent magnet motor 1 and is connected to the second keyway device 17 of the inner hole of the motor cone sleeve 15 inside the brushless permanent magnet motor 1. The conical surface of the fan main shaft 6 is precisely matched with the conical surface 16 of the cone sleeve. The bearing housing 4 is a through-cavity structure, and the through-cavity is filled with lubricating oil. The output end of the fan main shaft 6 passes through the middle through-cavity of the bearing housing 4 and is connected to the fan impeller 5. After the stator coil 14 is energized, the rotor 13, the motor cone sleeve 15 and the fan main shaft 6 are driven to rotate to realize the rotation of the fan impeller 5.

[0005] Furthermore, the diameter of the inner hole of the motor cone sleeve 15 is the same as the diameter of the fan main shaft 6 .

[0006] Furthermore, a circular nut 2 and a circular retaining ring 3 are provided on one end surface of the motor cone sleeve 15 , and the two ends of the motor cone sleeve 15 are fixed to the fan main shaft 6 through the cooperation of the circular nut 2 and the circular retaining ring 3 .

[0007] Furthermore, a fan 7 is connected to the end of the fan main shaft 6 close to the brushless motor. The fan 7 is connected to the fan main shaft 6 via a third keyway device 71. The fan 7 is driven to rotate by the fan main shaft 6 to cool the brushless motor.

[0008] Furthermore, a wind shield 8 is sleeved on the outside of the fan 7, and one end of the wind shield 8 close to the brushless motor is fixedly connected to the motor housing 11 to form a wind shield, which increases the air flow and prevents dust from entering the brushless motor.

[0009] Furthermore, a left cover plate 41 and a right cover plate 42 are provided at both ends of the bearing box 4. The end of the motor housing 11 away from the wind cover 8 is connected to the left cover plate 41 by nuts or bolts, and the right cover plate 42 is connected to the box by nuts or bolts to position the bearing, thereby realizing axial positioning of the fan main shaft 6.

[0010] Furthermore, a first sealing ring 45 is provided at the connection between the left cover plate 41 and the bearing housing 4, and a second sealing ring 46 is provided at the connection between the right cover plate 42 and the bearing housing 4, so as to prevent the lubricating oil of the bearing housing 4 from overflowing and play a sealing role.

[0011] Furthermore, an oil seal is provided at the connection between the right cover plate 42 and the fan main shaft 6, and the lubricating oil seal is designed to prevent the lubricating oil from leaking.

[0012] Furthermore, the output end of the fan main shaft 6 is connected to the fan impeller 5 through a first keyway device 51 .

[0013] Furthermore, the bearing housing 4 is an integrally formed structure, and the thickness of the four corners of the bearing housing 4 is greater than the thickness of the four planes of the bearing housing 4, so that the force that the bearing housing 4 can withstand is increased and the weight is light. The bearing housing 4 is also provided with an oil filling port 44 and a window 43. Through the cooperation of the window 43 and the oil filling port 44, the lower part of the bearing of the fan main shaft 6 is immersed in the lubricating oil.

[0014] Beneficial effects of the present invention: The present invention proposes a brushless motor bearing box device that is easy to disassemble and assemble, which directly connects the bearing box body 4, the brushless permanent magnet motor 1 and the fan impeller 5 through an integrally formed fan main shaft 6, including a brushless permanent magnet motor 1 and a bearing box body 4, the fan main shaft 6 is installed on the bearing box body 4, passes through the bearing box body 4, and is connected with the motor taper sleeve 15 and the rotor 13 in sequence; the fan main shaft 6 transmits the torque to the fan impeller 5 through the first keyway device 51, thereby driving the fan impeller 5 to rotate and work accordingly; the inner hole of the motor taper sleeve 15 is provided with a tapered surface, the tapered surface cooperates with the tapered surface of the fan main shaft 6 and the diameter of the inner hole is consistent with the diameter of the fan main shaft 6, this design facilitates the disassembly and assembly of the motor and the fan main shaft 6, the motor taper sleeve 15 is sleeved on the fan main shaft 6, and the fan main shaft 6 is driven to rotate by the second keyway device 17 provided in the inner hole; in order to facilitate disassembly and assembly, the impeller end bearing is designed to be 1-2 models larger than the motor end bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The cross-sectional structure diagram of the brushless motor bearing box device that is easy to disassemble and assemble of the present invention.

[0016] Figure 2 The present invention is a schematic diagram of a partial cross-sectional structure of a brushless motor bearing box device that is easy to disassemble and assemble.

[0017] Main component symbols

[0018]

[0019]

[0020] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0021] like Figure 1 As shown, it is a structural schematic diagram of the brushless motor bearing box device that is easy to disassemble and assemble according to the present invention; Figure 2The figure is a partial cross-sectional structural schematic diagram of the brushless motor bearing box device that is easy to disassemble and assemble according to the present invention.

[0022] A brushless motor bearing box device that is easy to disassemble and assemble, comprising a brushless permanent magnet motor 1, a fan main shaft 6 and a bearing box body 4, characterized in that: the brushless motor is composed of a motor housing 11 and a driving device, the driving device is located inside the motor housing 11, and the driving device comprises: a motor cone sleeve 15, a rotor 13 and a stator coil 14, the outside of the motor cone sleeve 15 is connected to the rotor 13, the outer ring of the rotor 13 is provided with a stator coil 14, the stator coil 14 is electrically connected to an external power supply 12, and the inner hole of the motor cone sleeve 15 is provided with a second keyway device 17 and a cone sleeve cone surface 16 The fan main shaft 6 is an integrally formed shaft. The input shaft of the fan main shaft 6 passes through the interior of the brushless permanent magnet motor 1 and is connected to the second keyway device 17 of the inner hole of the motor cone sleeve 15 inside the brushless permanent magnet motor 1. The conical surface of the fan main shaft 6 is precisely matched with the conical surface 16 of the cone sleeve. The bearing housing 4 is a through-cavity structure, and the through-cavity is filled with lubricating oil. The output end of the fan main shaft 6 passes through the middle through-cavity of the bearing housing 4 and is connected to the fan impeller 5. After the stator coil 14 is energized, the rotor 13, the motor cone sleeve 15 and the fan main shaft 6 are driven to rotate to realize the rotation of the fan impeller 5.

[0023] The diameter of the inner hole of the motor cone sleeve 15 is the same as the diameter of the fan main shaft 6 .

[0024] A circular nut 2 and a circular retaining ring 3 are provided on one end surface of the motor cone sleeve 15 , and the two ends of the motor cone sleeve 15 are fixed to the fan main shaft 6 through the cooperation of the circular nut 2 and the circular retaining ring 3 .

[0025] The end of the fan main shaft 6 close to the brushless motor is connected to a fan 7, and the fan 7 is connected to the fan main shaft 6 through a third keyway device 71. The fan 7 is driven to rotate by the fan main shaft 6 to cool the brushless motor.

[0026] The fan 7 is also sleeved with a wind shield 8 on the outside, and one end of the wind shield 8 close to the brushless motor is fixedly connected to the motor housing 11 to form a wind shield, which increases the air flow and prevents dust from entering the brushless motor.

[0027] The bearing box body 4 is provided with a left cover plate 41 and a right cover plate 42 at both ends. The end of the motor housing 11 away from the wind cover 8 is connected to the left cover plate 41 by nuts or bolts, and the right cover plate 42 is connected to the box body by nuts or bolts to position the bearing, thereby realizing axial positioning of the fan main shaft 6.

[0028] A first sealing ring 45 is provided at the connection between the left cover plate 41 and the bearing housing 4, and a second sealing ring 46 is provided at the connection between the right cover plate 42 and the bearing housing 4, which play a sealing role in preventing the lubricating oil of the bearing housing 4 from overflowing.

[0029] An oil seal is also provided at the connection between the right cover plate 42 and the fan main shaft 6, and the lubricating oil seal is designed to prevent the lubricating oil from leaking.

[0030] The output end of the fan main shaft 6 is connected to the fan impeller 5 through a first keyway device 51 .

[0031] The bearing housing 4 is an integrally formed structure, and the thickness of the four corners of the bearing housing 4 is greater than the thickness of the four planes of the bearing housing 4, so that the force that the bearing housing 4 can withstand is increased and the weight is light. The bearing housing 4 is also provided with an oil filling port 44 and a window 43. Through the cooperation of the window 43 and the oil filling port 44, the lower part of the bearing of the fan main shaft 6 is immersed in the lubricating oil.

[0032] Beneficial effects of the present invention: The present invention proposes a brushless motor bearing box device that is easy to disassemble and assemble, which directly connects the bearing box body 4, the brushless permanent magnet motor 1 and the fan impeller 5 through an integrally formed fan main shaft 6, including a brushless permanent magnet motor 1 and a bearing box body 4, the fan main shaft 6 is installed on the bearing box body 4, passes through the bearing box body 4, and is connected with the motor taper sleeve 15 and the rotor 13 in sequence; the fan main shaft 6 transmits the torque to the fan impeller 5 through the first keyway device 51, thereby driving the fan impeller 5 to rotate and work accordingly; the inner hole of the motor taper sleeve 15 is provided with a tapered surface, the tapered surface cooperates with the tapered surface of the fan main shaft 6 and the diameter of the inner hole is consistent with the diameter of the fan main shaft 6, this design facilitates the disassembly and assembly of the motor and the fan main shaft 6, the motor taper sleeve 15 is sleeved on the fan main shaft 6, and the fan main shaft 6 is driven to rotate by the second keyway device 17 provided in the inner hole; in order to facilitate disassembly and assembly, the impeller end bearing is designed to be 1-2 models larger than the motor end bearing.

[0033] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A brushless motor bearing box device that is easy to disassemble and assemble, comprising a brushless permanent magnet motor (1), a fan main shaft (6) and a bearing box body (4), characterized in that: The brushless motor is composed of a motor housing (11) and a driving device, wherein the driving device is located inside the motor housing (11), and comprises: a motor cone sleeve (15), a rotor (13) and a stator coil (14). The outside of the motor cone sleeve (15) is connected to the rotor (13), the outer ring of the rotor (13) is provided with a stator coil (14), the stator coil (14) is electrically connected to an external power supply (12), the inner hole of the motor cone sleeve (15) is provided with a second keyway device (17) and a cone sleeve conical surface (16), the fan main shaft (6) is an integrally formed shaft, the input shaft of the fan main shaft (6) passes through the inside of the brushless permanent magnet motor (1) and is connected to the second keyway device (17) of the inner hole of the motor cone sleeve (15) inside the brushless permanent magnet motor (1), the cone surface of the fan main shaft (6) is precisely matched with the cone sleeve conical surface (16), and the bearing The housing (4) is a through-cavity structure, and lubricating oil is filled in the through-cavity. The output end of the fan main shaft (6) passes through the middle through-cavity of the bearing housing (4) and is connected to the fan impeller (5). When the stator coil (14) is energized, the rotor (13), the motor cone sleeve (15) and the fan main shaft (6) are driven to rotate to realize the rotation of the fan impeller (5). The diameter of the inner hole of the motor cone sleeve (15) is the same as the diameter of the fan main shaft (6). The end of the fan main shaft (6) close to the brushless motor is connected to the fan (7), and the fan (7) and the fan main shaft (6) are connected through a third keyway device (71). The two ends of the bearing housing (4) are provided with a left cover plate (41) and a right cover plate (42). The end of the motor housing (11) away from the wind cover (8) is connected to the left cover plate (41) through nuts or bolts, and the right cover plate (42) is connected to the housing through nuts or bolts.

2. The brushless motor bearing box device that is easy to disassemble and assemble as claimed in claim 1, characterized in that: One end surface of the motor cone sleeve (15) is provided with a circular nut (2) and a circular retaining ring (3), and the two ends of the motor cone sleeve (15) are fixed to the fan main shaft (6) through the cooperation of the circular nut (2) and the circular retaining ring (3).

3. The brushless motor bearing box device that is easy to disassemble and assemble as claimed in claim 1, characterized in that: The fan (7) is also sleeved with a wind cover (8) on its exterior, and one end of the wind cover (8) close to the brushless motor is fixedly connected to the motor housing (11).

4. The brushless motor bearing box device that is easy to disassemble and assemble as claimed in claim 1, characterized in that: A first sealing ring (45) is provided at the connection between the left cover plate (41) and the bearing housing (4), and a second sealing ring (46) is provided at the connection between the right cover plate (42) and the bearing housing (4).

5. The brushless motor bearing box device that is easy to disassemble and assemble as claimed in claim 1, characterized in that: An oil seal is also provided at the connection between the right cover plate (42) and the fan main shaft (6).

6. The brushless motor bearing box device that is easy to disassemble and assemble as claimed in claim 1, characterized in that: The output end of the fan main shaft (6) is connected to the fan impeller (5) via a first keyway device (51).

7. The brushless motor bearing box device that is easy to disassemble and assemble as claimed in claim 1, characterized in that: The bearing housing (4) is an integrally formed structure. The thickness of the four corners of the bearing housing (4) is greater than the thickness of the four planes of the bearing housing (4), so that the bearing housing (4) can withstand increased forces and has a light weight. The bearing housing (4) is also provided with an oil filling port (44) and a viewing window (43). The viewing window (43) and the oil filling port (44) cooperate to allow the lower part of the bearing of the fan main shaft (6) to be immersed in lubricating oil.

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