CN216625402U

CN216625402U - Self-sealing high-speed rotor assembly structure

Info

Publication number: CN216625402U
Application number: CN202220066887.4U
Authority: CN
Inventors: 陈锋; 朱秦叶; 吴雄
Original assignee: Suzhou Tie Jin Science & Technology Corp ltd
Current assignee: Suzhou Tie Jin Science & Technology Corp ltd
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-05-27
Anticipated expiration: 2032-01-11

Abstract

The application relates to a self sealss high speed rotor subassembly structure, include: a rotating shaft having a near water end; the bearing group comprises two bearings which are sleeved on the rotating shaft at intervals; the sealing device is arranged on one side of the bearing group close to the near water end; the shaft sleeve is sleeved outside the bearing group and the sealing device, a glue inlet is formed in the shaft sleeve, and a glue storage groove communicated with the glue inlet is formed in the inner wall, sleeved on the bearing, of the shaft sleeve; and glue filled in the glue storage groove. This application provides the pretightning force loading between the bearing through the rubber coated mode, sets up on the axle sleeve and stores up gluey groove and advance gluey mouth, pours into glue through advancing gluey mouth toward storing up gluey inslot into glue, makes bearing inner race and axle sleeve pass through glue fixed, improves the stability of bearing pretension to improve the stability and the reliability of rotor work, increase of service life, this rotor simple structure is convenient for assemble and processing simultaneously.

Description

Self-sealing high-speed rotor assembly structure

Technical Field

The utility model relates to a self-sealing high-speed rotor assembly structure, and belongs to the technical field of mechanical transmission parts.

Background

Along with the continuous improvement of living standard, intelligent equipment such as dust catcher, sweeper gradually gets into the family, can be provided with the motor among this type of intelligent equipment usually, and the rotor is the important component structure in the motor, is the rotator by the bearing support. The structure of the existing rotor generally comprises a rotating shaft, bearings, pre-tightening springs and bushings, wherein the bearings are usually arranged on the rotating shaft in pairs at intervals, the pre-tightening springs provide pre-tightening force between the bearings, and the bushings are sleeved outside the bearings. However, the stability of the pretension of the existing rotor structure is poor, due to the vibration influence of the working of the rotor, the spring is always in dynamic change, the variation range of the pretightening force is relatively large, so that the working state of the bearing changes in a considerable range, and the problem of poor running stability of the rotor is easily caused.

Disclosure of Invention

Therefore, the utility model aims to provide a self-sealing high-speed rotor assembly structure which is simple in structure, convenient to assemble and high in stability.

In order to achieve the purpose, the utility model provides the following technical scheme: a self sealing high speed rotor assembly structure comprising:

a rotating shaft having a near water end;

the bearing group comprises two bearings which are sleeved on the rotating shaft at intervals;

the sealing device is arranged on one side of the bearing group close to the near water end;

the shaft sleeve is sleeved outside the bearing group and the sealing device, a glue inlet is formed in the shaft sleeve, and a glue storage groove communicated with the glue inlet is formed in the inner wall, sleeved on the bearing, of the shaft sleeve; and

and the glue is filled in the glue storage groove.

Further, the sealing device comprises two limiting parts arranged on the inner wall of the shaft sleeve and a sealing ring arranged between the two limiting parts, a gap is formed between the limiting parts and the rotating shaft, and a sealing part is arranged in the gap.

Furthermore, the limiting part is a magnetic pole, the sealing ring is a permanent magnet ring, the sealing part is magnetic fluid, and the magnetic pole, the permanent magnet ring and the rotating shaft form a magnetic loop.

Furthermore, the shaft sleeve is also provided with a thread for adjustment.

Further, the shaft sleeve is made of aluminum alloy.

The utility model has the beneficial effects that: this application realizes the pretightning force loading between the bearing through the rubber coated mode, sets up on the axle sleeve and stores up gluey groove and advance gluey mouth, accomplishes the back at the assembly, pours into glue through advancing gluey mouth toward storing up gluey inslot into, makes bearing inner race and axle sleeve pass through glue fixedly. The rotor is simple in structure and convenient to assemble and process, and compared with the prior art, the stability of bearing pre-tightening is improved, so that the working stability and reliability of the rotor are improved, and the service life is prolonged.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

Fig. 1 is a schematic cross-sectional structure view of a self-sealing high-speed rotor assembly structure according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, a self-sealing high-speed rotor assembly structure according to an embodiment of the present invention includes a rotating shaft 1, a bearing set (not numbered), a sealing device 3, a shaft sleeve 4, and glue (not shown). The shaft 1 has a proximal end 11. The bearing group comprises two bearings 2 which are sleeved on the rotating shaft 1 at intervals. The sealing device 3 is arranged on one side of the bearing group close to the near water end 11. The shaft sleeve 4 is sleeved outside the bearing group and the sealing device 3, a glue inlet 41 is formed in the shaft sleeve 4, and a glue storage groove 42 communicated with the glue inlet 41 is formed in the inner wall, sleeved on the bearing 2, of the shaft sleeve 4. The glue is filled in the glue storage groove 42. The pre-tightening force loading between the bearings 2 is provided in a gluing mode, the glue storage groove 42 and the glue inlet 41 are arranged on the shaft sleeve 4, and glue enters the glue storage groove 42 through the glue inlet 41 so that the outer ring of the bearing 2 is fixed with the shaft sleeve 4 through the glue, the pre-tightening stability of the bearings 2 is improved, the working stability and reliability of the rotor are improved, the service life is prolonged, and meanwhile, the rotor is simple in structure and convenient to assemble and process.

It should be noted that, the self-sealing high-speed rotor assembly structure of the application can be applied to motors of cleaning equipment such as a sweeper or a dust collector, and because the cleaning equipment can contact water inevitably when in use, in order to avoid the damage of the internal motor caused by the contact water, the internal motor needs to be subjected to waterproof treatment, and by arranging the sealing device 3, the internal bearing 2 can be prevented from contacting the water, so that the service life of the bearing 2 is prolonged, and the service life of the motor is prolonged. The pretightening force of the bearing 2 is a force which is pre-added before the bearing is subjected to working load and is used for enhancing the reliability and tightness of connection so as to prevent gaps or relative slippage from occurring between the connecting pieces after the bearing is subjected to the load, and the pretightening force is loaded in a gluing mode, so that the operation is convenient, and the fixation reliability of the bearing 2 can be ensured. The rotating shaft 1 is a shaft which is used for connecting main parts of a product and is used for bearing bending moment and torque in rotating work. The shaft sleeve 4 is a cylindrical mechanical part sleeved on the bearing 2, mainly plays a role in fixing and axial positioning, can generate vibration when the bearing 2 rotates, and can fix the bearing 2 by the shaft sleeve 4 so as not to shift due to vibration during operation, so that the rotor structure is more stable.

In the present embodiment, the sealing device 3 includes two limiting members 31 disposed on the inner wall of the shaft sleeve 4 and a sealing ring 32 disposed between the two limiting members 31, a gap (not numbered) is provided between the limiting members 31 and the rotating shaft 1, and a sealing member 33 is disposed in the gap. Specifically, the limiting member 31 is a magnetic pole, the sealing ring 32 is a permanent magnet ring, the sealing member 33 is a magnetic fluid, and the magnetic pole 31, the permanent magnet ring 32 and the rotating shaft 1 form a magnetic loop. Under the action of the magnetic field generated by the permanent magnet ring 32, the magnetic fluid 33 arranged in the gap between the rotating shaft 1 and the magnetic pole 31 is concentrated to form an O-shaped ring, and the gap between the rotating shaft 1 and the magnetic pole 31 is blocked to achieve the purpose of sealing. It should be noted that the magnetic fluid 33 is a colloidal solution, which is also called magnetic liquid, ferrofluid or magnetic liquid, and has both the fluidity of liquid and the magnetism of solid magnetic material. The colloidal liquid is a stable colloidal liquid formed by mixing magnetic solid particles with the diameter of nanometer level (less than 10 nanometers), base carrier liquid and surfactant. The magnetic fluid 33 has no magnetic attraction force in a static state, and exhibits magnetism when an external magnetic field is applied. Of course, in other embodiments, the sealing device 3 may also adopt other sealing forms, specifically, a rubber ring seal or a decompression seal, etc., which are not limited herein.

The sleeve 4 is also provided with an adjusting thread 5. It should be noted that, the adjusting thread 5 is used in cooperation with an adjusting ring (not shown), and the adjusting ring is provided with a thread matching with the adjusting thread 5, and when in use, the adjusting ring is sleeved on the adjusting thread 5, and is rotated according to actual requirements to adjust the pre-tightening force applied to the bearing 2, so that the stability of the bearing 2 is improved, and the stability and reliability of the rotor are further improved. The adjusting ring is known in the art, and the structure and principle thereof are well known to those skilled in the art, and will not be described herein.

In the present embodiment, the sleeve 4 is an aluminum alloy. The aluminum alloy is an alloy which takes aluminum as a base and is added with a certain amount of other alloying elements, is one of light metal materials, has higher strength, specific strength close to that of high alloy steel, specific rigidity superior to that of steel, good casting performance and plastic processing performance, good electric conduction and heat conduction performance, good corrosion resistance and weldability, no toxicity, easy recovery and the like. The safety factor of use and the life of rotor are further promoted, the follow-up change of being convenient for is retrieved simultaneously, saves the resource, reduce cost. Of course, in other embodiments, the shaft sleeve 4 may also be made of other materials, and may specifically be made of high-quality carbon steel, which is not limited herein.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. A self-sealing high speed rotor assembly structure, comprising:

a rotating shaft having a near water end;

and the glue is filled in the glue storage groove.

2. The self-sealing high-speed rotor assembly structure as claimed in claim 1, wherein the sealing means comprises two stoppers disposed on the inner wall of the shaft sleeve and a sealing ring disposed between the two stoppers, and a gap is formed between the stoppers and the rotating shaft, and a sealing member is disposed in the gap.

3. The self-sealing high-speed rotor assembly structure as claimed in claim 2, wherein the limiting member is a magnetic pole, the sealing ring is a permanent magnet ring, the sealing member is a magnetic fluid, and the magnetic pole, the permanent magnet ring and the rotating shaft form a magnetic circuit.

4. The self sealing high speed rotor assembly structure as claimed in claim 1, wherein the sleeve is further provided with adjustment threads.

5. The self sealing high speed rotor assembly structure as claimed in claim 1, wherein said bushing is an aluminum alloy.