A flywheel assembly

Abstract

This utility model relates to the field of mechanical transmission technology and discloses a flywheel assembly, including a flywheel spindle, a flywheel body, and a sealing mechanism. The flywheel body is sleeved on the flywheel spindle and is connected to an external motor via a belt. The sealing mechanism includes a first end cap and a second end cap located on opposite axial sides of the flywheel body. The flywheel body of this utility model is connected to an external motor via a belt. The elasticity of the belt can initially block the direct transmission of the motor's own vibration to the flywheel body and subsequent transmission links. Simultaneously, the inertial characteristics of the flywheel body itself can buffer torque fluctuations transmitted by the motor, weakening vibration transmission and forming a dual protection of flywheel inertia buffering torque and belt elasticity isolating the vibration source. Furthermore, the closed chamber formed by the first end cap, the second end cap, and the flywheel body effectively prevents dust from the external environment from intruding into the transmission connection area, ensuring long-term operational stability.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, and in particular to a flywheel assembly. Background Technology

[0002] In the field of nanomaterial preparation, nanopowder mixing and modifying machines are key equipment for achieving powder surface modification and homogenization. Their operational stability directly affects the final properties of nanopowders. Due to the extremely small particle size and large specific surface area of ​​nanopowders, the requirements for the stability and uniformity of the mixing speed are extremely high. Excessive fluctuations in mixing speed can lead to powder agglomeration, uneven distribution of modifiers, and in severe cases, even damage to the nanoscale microstructure of the powder, affecting the product's yield. Traditional nanopowder mixing and modifying machines have many technical defects in their power transmission systems. The motor output torque is easily affected by fluctuations in grid voltage and load changes, and the existing transmission structure lacks effective inertial buffer components, resulting in frequent fluctuations in the mixing shaft speed, making it impossible to maintain constant shear force and mixing intensity. Simultaneously, the high-frequency vibration generated by the motor is directly transmitted to the mixing chamber through the transmission shaft, causing irregular movement of powder particles. Long-term vibration can also lead to loosening of equipment connecting parts and accelerated wear. Furthermore, powder dust is often present in the mixing environment, and traditional transmission components are easily infiltrated by dust, causing wear and jamming of moving parts such as bearings. Utility Model Content

[0003] The present invention aims to improve at least one technical problem in the prior art.

[0004] This utility model provides a flywheel assembly, including: Flywheel spindle; The flywheel body is sleeved on the flywheel spindle. The flywheel body forms a radially fixed transmission connection with the flywheel spindle through a radial bearing. The flywheel body is connected to an external motor through a belt. A sealing mechanism, comprising a first end cap and a second end cap, the first end cap and the second end cap being located on opposite axial sides of the flywheel body and respectively fitted onto the flywheel spindle, the flywheel body, the first end cap and the second end cap forming a closed chamber for sealing the radial bearing.

[0005] The beneficial effects of this utility model are as follows: The radial fixed transmission connection between the flywheel body and the flywheel spindle ensures the stability of power transmission, reduces speed fluctuations caused by loose connections or relative slippage, and helps maintain a constant speed in the subsequent transmission mechanism. The flywheel body is connected to an external motor via a belt, which utilizes the elasticity of the belt to initially block the direct transmission of the motor's own vibration to the flywheel body and subsequent transmission links. Simultaneously, the inertial characteristics of the flywheel body itself buffer the torque fluctuations transmitted by the motor, weakening vibration transmission and forming a dual protection of flywheel inertial torque buffering and belt elasticity isolating the vibration source. Furthermore, the closed chamber formed by the first end cover, the second end cover, and the flywheel body effectively prevents dust from the external environment from intruding into the transmission connection area, ensuring long-term operational stability.

[0006] As a further improvement to the above technical solution, the radial bearing includes a plurality of first radial bearings and a plurality of second radial bearings. The first radial bearings and the second radial bearings are respectively located at the two axial ends of the flywheel body sleeved on the flywheel spindle, and the first radial bearings and the second radial bearings are evenly distributed along the circumference of the flywheel spindle.

[0007] As a further improvement to the above technical solution, a plurality of first fixing holes are respectively opened on both sides of the flywheel body, and first through holes corresponding to the first fixing holes are respectively opened on the axial direction of the first end cover and the second end cover. The sealing mechanism also includes a first bolt, which passes through the first through hole and is threadedly connected to the first fixing hole.

[0008] As a further improvement to the above technical solution, sealing rings are respectively provided between the first end cover and the flywheel body and between the second end cover and the flywheel body, and the sealing rings are sleeved on the flywheel spindle.

[0009] As a further improvement to the above technical solution, the first end cap and the second end cap are respectively provided with annular grooves on the side facing the flywheel, and the sealing ring is embedded in the annular grooves.

[0010] As a further improvement to the above technical solution, the sealed cavity is filled with lubricating grease.

[0011] As a further improvement to the above technical solution, the flywheel body has a connecting part and a buffer part, the diameter of the connecting part is smaller than that of the buffer part, and the outer wall of the connecting part has a groove for mounting a belt.

[0012] As a further improvement to the above technical solution, the two side walls of the trench are inclined surfaces.

[0013] As a further improvement to the above technical solution, the flywheel assembly also includes an electromagnetic clutch, which is sleeved on the flywheel spindle. The electromagnetic clutch includes a housing fixedly connected to the second end cover. The flywheel spindle has a flat keyway corresponding to the position where the electromagnetic clutch is sleeved. The housing has a transmission sleeve adapted to the flat keyway. The outer side of the transmission sleeve is provided with an annular iron core, a conductive coil, and an axially movable armature. The side of the armature near the flywheel body is provided with a friction plate.

[0014] As a further improvement to the above technical solution, the housing has a plurality of second fixing holes on the side axially close to the second end cover, the second end cover has a second through hole corresponding to the second fixing hole on the axial direction, the sealing mechanism also includes a second bolt, the second bolt passes through the second through hole and is threadedly connected to the second fixing hole, and the flywheel body has a relief groove for avoiding the second bolt.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of a flywheel assembly according to one embodiment.

[0017] In the attached diagram: 100-flywheel spindle; 101-flat keyway; 200-flywheel body; 201-connecting part; 202-buffer part; 203-groove; 301-first end cover; 302-second end cover; 303-sealing ring; 401-first radial bearing; 402-second radial bearing; 500-first bolt; 600-electromagnetic clutch; 601-housing; 602-transmission sleeve; 700-second bolt. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] The following is combined with Figure 1 The embodiments of this utility model are described below.

[0022] This utility model embodiment provides a flywheel assembly, including: Flywheel spindle 100; The flywheel body 200 is sleeved on the flywheel spindle 100. The flywheel body 200 forms a radially fixed transmission connection with the flywheel spindle 100 through a radial bearing. The flywheel body 200 is connected to an external motor through a belt. A sealing mechanism is provided, comprising a first end cap 301 and a second end cap 302. The first end cap 301 and the second end cap 302 are located on opposite axial sides of the flywheel body 200 and are respectively fitted onto the flywheel spindle 100. The flywheel body 200, the first end cap 301, and the second end cap 302 together form a closed chamber for sealing the radial bearing.

[0023] In the flywheel assembly provided in this embodiment, the flywheel spindle 100 serves as the core shaft for power transmission, providing rotational support for the entire assembly. The flywheel body 200 is fitted onto the flywheel spindle 100, forming a radially fixed transmission connection. This ensures that the flywheel body 200 can synchronously drive the flywheel spindle 100 to rotate when it rotates. This connection method effectively transmits torque and avoids power loss caused by relative slippage. The flywheel body 200 is connected to an external motor via a belt on its outer surface. The motor's power is transmitted to the flywheel body 200 via the belt, and then the flywheel body 200 drives the flywheel spindle 100 to rotate, thereby driving the subsequent transmission mechanism (ultimately driving the stirring mechanism). This embodiment ensures the stability of power transmission through the radially fixed transmission connection between the flywheel body 200 and the flywheel spindle 100, reducing speed fluctuations caused by loose connections or relative slippage. At the same time, the inertial characteristics of the flywheel body 200 itself can buffer torque fluctuations transmitted by the motor, weaken vibration transmission, and reduce interference to the subsequent transmission mechanism.

[0024] In the flywheel assembly provided in this embodiment, the first end cap 301 and the second end cap 302 of the sealing mechanism are located on both axial sides of the flywheel body 200 and are both sleeved on the flywheel spindle 100. The closed chamber formed by the three completely seals the transmission connection area between the flywheel body 200 and the flywheel spindle 100, isolating this area from the external environment. The first end cap 301 and the second end cap 302 not only serve as axial limiters but also block the path of external dust and impurities into the transmission connection area through the sealing structure, protecting the structure (lubrication structure) of this area from contamination, reducing the risk of component wear, extending the service life of the assembly, and ensuring long-term operational stability.

[0025] Further, the radial bearing includes a plurality of first radial bearings 401 and a plurality of second radial bearings 402. The first radial bearings 401 and the second radial bearings 402 are respectively located at the two axial ends of the flywheel body 200 sleeved on the flywheel main shaft 100, and the first radial bearings 401 and the second radial bearings 402 are evenly distributed along the circumference of the flywheel main shaft 100.

[0026] In this embodiment, multiple first radial bearings 401 and second radial bearings 402 form multi-point support, which together realize the radial fixation and synchronous transmission of the flywheel body 200 and the flywheel spindle 100. This multi-bearing layout can not only provide radial constraint on the flywheel body 200 and the flywheel spindle 100 at both ends of the axial direction, but also transmit radial force evenly through distributed support points, avoiding structural deformation caused by localized force concentration on a single bearing.

[0027] Furthermore, the flywheel body 200 has several first fixing holes on both sides of its axial direction, and the first end cover 301 and the second end cover 302 have first through holes corresponding to the first fixing holes on their axial directions. The sealing mechanism also includes a first bolt 500, which passes through the first through hole and is threadedly connected to the first fixing hole.

[0028] In this embodiment, a plurality of first fixing holes are respectively opened on both axial end faces of the flywheel body 200. These first fixing holes are arranged in a circular array around the central axis of the flywheel body 200. Correspondingly, the first end cap 301 and the second end cap 302 are respectively opened in the axial direction with first through holes corresponding to the positions of the first fixing holes. During assembly, the first bolt 500 passes through the first through hole of the first end cap 301 and is threadedly connected to the first fixing hole on one side of the flywheel body 200. The second end cap 302 is connected in the same way, so as to achieve rigid fixation of the first end cap 301, the second end cap 302 and the flywheel body 200. At the same time, the evenly distributed bolt connection can disperse the torque and vibration generated when the flywheel body 200 rotates to multiple fixing points, reduce the stress load on a single connection part 201, reduce the risk of bolt loosening, and ensure the long-term stability of the connection between the sealing mechanism and the flywheel body 200.

[0029] Furthermore, sealing rings 303 are respectively provided between the first end cap 301 and the flywheel body 200 and between the second end cap 302 and the flywheel body 200, and the sealing rings 303 are sleeved on the flywheel spindle 100.

[0030] This embodiment further enhances the sealing performance of the enclosed chamber by setting sealing rings 303, which are sleeved on the flywheel spindle 100, between the first end cap 301, the second end cap 302, and the flywheel body 200. On the one hand, the sealing rings 303 can fill the tiny gaps between the end caps and the flywheel body 200 caused by machining errors, preventing external dust from entering the enclosed chamber. On the other hand, the structure sleeved on the flywheel spindle 100 can seal the gap between the end cap shaft hole and the spindle, forming an annular sealing barrier around the spindle, preventing dust from entering the transmission area along the spindle axis. This double sealing design can more effectively protect the transmission components (such as radial bearings) in the enclosed chamber from dust contamination. At the same time, if the enclosed chamber is filled with lubricating medium, it can reduce the leakage of lubricating medium and ensure the smoothness of the transmission process.

[0031] Furthermore, the first end cap 301 and the second end cap 302 are respectively provided with annular grooves on the side facing the flywheel, and the sealing ring 303 is embedded in the annular grooves.

[0032] In this embodiment, the annular groove extends circumferentially along the end cap and is concentrically positioned with the shaft hole of the end cap. The annular groove provides precise positioning and constraint for the sealing ring 303, avoiding the displacement and detachment problems caused by vibration, temperature changes, or assembly deviations in traditional non-positioning structures. This ensures that the sealing ring 303 is always in the preset sealing position between the mating surfaces of the end cap and the flywheel body 200, maintaining long-term stable sealing performance. Simultaneously, the groove's wrapping effect on the sealing ring 303 enhances its resistance to compression, reduces wear on the sealing ring 303 caused by relative vibration between the end cap and the flywheel body 200, and extends the service life of the seal. This structural design further improves the sealing reliability of the enclosed chamber.

[0033] Furthermore, the enclosed cavity is filled with lubricating grease.

[0034] In this embodiment, the grease filling the enclosed cavity can provide efficient lubrication to the transmission connection area (especially the radial bearing) between the flywheel body 200 and the flywheel spindle 100, reduce the friction coefficient between components, reduce energy loss and heat caused by friction, prevent components from wearing or deforming due to overheating, and extend the service life of transmission components.

[0035] Furthermore, the flywheel body 200 has a connecting portion 201 and a buffer portion 202. The diameter of the connecting portion 201 is smaller than that of the buffer portion 202. The outer wall of the connecting portion 201 has a groove 203 for mounting a belt.

[0036] In this embodiment, the buffer portion 202 of the flywheel body 200 has a larger diameter and a greater moment of inertia. It can effectively absorb and buffer the torque fluctuations transmitted by the motor by utilizing the inertial effect, reducing sudden changes in speed caused by unstable motor output, thereby stabilizing the rotational speed of the flywheel spindle 100. The connecting portion 201 has a smaller diameter and is provided with a groove 203, which not only adapts to the transmission size of the belt, but also reduces the contact area deviation between the belt and the connecting portion 201 by the smaller diameter, reducing the risk of belt slippage. At the same time, the structure of the large-diameter buffer portion 202 combined with the small-diameter connecting portion 201 makes the mass distribution of the flywheel body 200 more reasonable, the centrifugal force during rotation more balanced, reduces the additional vibration caused by mass eccentricity, further improves transmission stability, and ensures the uniformity of nanopowder modification.

[0037] Furthermore, the two side walls of the trench 203 are inclined surfaces.

[0038] In this embodiment, the two side walls of the groove 203 on the outer wall of the connecting part 201 are symmetrically arranged inclined surfaces, that is, the cross-section of the groove 203 is trapezoidal, and the two side walls gradually slope outward from the bottom of the groove to the opening, forming a structure that is wider at the outside and narrower at the inside. This design can increase the contact area with the belt, so that the tension transmitted by the belt is more evenly distributed on the side walls of the groove 203, improve the friction, effectively prevent the belt from slipping during high-speed transmission or load changes, ensure the stable transmission of motor power to the flywheel body 200, and reduce speed loss and fluctuations caused by slippage. In addition, the inclined surface structure facilitates the installation and removal of the belt.

[0039] Furthermore, the flywheel assembly also includes an electromagnetic clutch 600, which is sleeved on the flywheel spindle 100. The electromagnetic clutch 600 includes a housing 601 fixedly connected to the second end cover 302. The flywheel spindle 100 has a flat keyway 101 at the position where the electromagnetic clutch 600 is sleeved. The housing 601 has a transmission sleeve 602 adapted to the flat keyway 101. The outer side of the transmission sleeve 602 is provided with an annular iron core, a conductive coil, and an axially movable armature in sequence. The side of the armature near the flywheel body 200 is provided with a friction plate.

[0040] In this embodiment, a keyway 101 extending axially is provided on the flywheel spindle 100 corresponding to the position of the electromagnetic clutch 600. The inner ring of the transmission sleeve 602 inside the housing 601 is provided with a key tooth that matches the keyway 101. The transmission sleeve 602 and the flywheel spindle 100 are circumferentially fixed through the engagement of the key, ensuring that the two rotate synchronously. From the inside to the outside, the outer side of the transmission sleeve 602 is arranged with an annular iron core, a conductive coil and an armature. The annular iron core is fixed relative to the housing 601. The conductive coil is wound on the iron core. The armature can slide axially and maintain circumferential linkage with the transmission sleeve 602. A friction plate is fixed on the side of the armature facing the flywheel body 200. When the conductive coil is energized, the iron core generates an electromagnetic force to attract the armature to move towards the flywheel body 200, so that the friction plate is in contact with the end face of the flywheel body 200, realizing power transmission. When the power is off, the armature is reset, the friction plate is disengaged, and the power is cut off. The electromagnetic clutch 600 enables the flywheel assembly to have a quick clutch function. By controlling the contact or separation between the friction plate and the flywheel body 200 through the on and off of the conductive coil, the power can be switched on and off, which can reduce the speed regulation shock problem caused by the lag response of traditional mechanical clutches.

[0041] Furthermore, the housing 601 has a plurality of second fixing holes on the side axially close to the second end cover 302, and the second end cover 302 has a second through hole corresponding to the second fixing hole on the axial direction. The sealing mechanism also includes a second bolt 700, which passes through the second through hole and is threadedly connected to the second fixing hole. The flywheel body 200 has a relief groove for avoiding the second bolt 700.

[0042] In this embodiment, the electromagnetic clutch 600 has several second fixing holes on the end face of the housing 601 near the second end cover 302. These fixing holes are evenly distributed around the circumference of the housing 601 and form a circle, concentric with the central axis of the housing 601. Correspondingly, the second end cover 302 has second through holes that correspond one-to-one with the positions of the second fixing holes. The second through holes are also distributed in a circle around the circumference of the second end cover 302. During assembly, the second bolt 700 passes through the second through hole of the second end cover 302 and is threaded into the second fixing hole of the housing 601. The housing 601 and the second end cover 302 are rigidly fixed by the evenly distributed bolts. At the same time, a clearance groove is provided on the axial side of the flywheel body 200. This groove extends circumferentially and is positioned corresponding to the second bolt 700, ensuring that the end of the bolt or nut will not interfere with the rotating flywheel body 200 after the bolt is connected.

[0043] The preferred embodiments of the present invention have been described in detail above, but the present disclosure is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of the present disclosure.

Claims

1. A flywheel assembly, characterized in that, include: Flywheel spindle (100); The flywheel body (200) is sleeved on the flywheel spindle (100). The flywheel body (200) forms a radially fixed transmission connection with the flywheel spindle (100) through a radial bearing. The flywheel body (200) is connected to an external motor through a belt. The sealing mechanism includes a first end cap (301) and a second end cap (302). The first end cap (301) and the second end cap (302) are located on the axial sides of the flywheel body (200) and are respectively sleeved on the flywheel spindle (100). The flywheel body (200), the first end cap (301) and the second end cap (302) enclose and form a closed chamber for sealing the radial bearing.

2. The flywheel assembly according to claim 1, characterized in that, The radial bearing includes a plurality of first radial bearings (401) and a plurality of second radial bearings (402). The first radial bearings (401) and the second radial bearings (402) are respectively located at the two ends of the flywheel body (200) sleeved on the flywheel spindle (100), and the first radial bearings (401) and the second radial bearings (402) are evenly distributed along the circumference of the flywheel spindle (100).

3. The flywheel assembly according to claim 1, characterized in that, The flywheel body (200) has several first fixing holes on both sides of its axial direction. The first end cap (301) and the second end cap (302) have first through holes corresponding to the first fixing holes on their axial directions. The sealing mechanism also includes a first bolt (500), which passes through the first through hole and is threaded to the first fixing hole.

4. The flywheel assembly according to claim 1, characterized in that, A sealing ring (303) is provided between the first end cap (301) and the flywheel body (200) and between the second end cap (302) and the flywheel body (200), respectively, and the sealing ring (303) is sleeved on the flywheel spindle (100).

5. The flywheel assembly according to claim 4, characterized in that, The first end cap (301) and the second end cap (302) are respectively provided with annular grooves on the side facing the flywheel, and the sealing ring (303) is embedded in the annular groove.

6. The flywheel assembly according to claim 4, characterized in that, The enclosed cavity is filled with lubricating grease.

7. The flywheel assembly according to claim 1, characterized in that, The flywheel body (200) has a connecting part (201) and a buffer part (202). The diameter of the connecting part (201) is smaller than that of the buffer part (202). The outer wall of the connecting part (201) has a groove (203) for mounting a belt.

8. The flywheel assembly according to claim 7, characterized in that, The two side walls of the groove (203) are inclined surfaces.

9. The flywheel assembly according to claim 1, characterized in that, The flywheel assembly also includes an electromagnetic clutch (600), which is sleeved on the flywheel spindle (100). The electromagnetic clutch (600) includes a housing (601) fixedly connected to the second end cover (302). The flywheel spindle (100) has a flat keyway (101) at the position where the electromagnetic clutch (600) is sleeved. The housing (601) has a transmission sleeve (602) adapted to the flat keyway (101). The outer side of the transmission sleeve (602) is provided with an annular iron core, a conductive coil and an axially movable armature. The side of the armature near the flywheel body (200) is provided with a friction plate.

10. The flywheel assembly according to claim 9, characterized in that, The housing (601) has a plurality of second fixing holes on the side axially close to the second end cover (302). The second end cover (302) has a second through hole corresponding to the second fixing hole on the axial direction. The sealing mechanism also includes a second bolt (700). The second bolt (700) passes through the second through hole and is threadedly connected to the second fixing hole. The flywheel body (200) has a relief groove for avoiding the second bolt (700).

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