阅读说明：本技术 一种组装在直驱立磨上的双向滚子组合轴承 (Bidirectional roller combined bearing assembled on direct-drive vertical mill ) 是由 张炳义 尚勤贵 冯桂宏 卞浩田 吴鹏 尚金铎 高敏 陈高敏 尚金鸽 于 2021-10-18 设计创作，主要内容包括：本发明公开了一种组装在直驱立磨上的双向滚子组合轴承,包括壳体、定子、转子和转筒,定子设置在壳体内部,转子设置在定子内侧,转筒设置在定子中,转筒的上端设置有磨盘,定子机构上端面设置有组合轴承的下静圈,磨盘机构的下端面固定有组合轴承的上动圈,下静圈固连的下静圈环的向心内侧与上动圈固连的上动圈环的向心外侧之间设有圆柱滚子,所述的上动圈下侧与下静圈上侧之间的锥形端面设有锥形滚道,锥形滚道内一周设有圆锥滚子；本发明采用独特结构,实现了径向与轴向双向载荷组合轴承,具有立磨使用的永磁直驱电机上下装配方便,双向承载、高刚性、高精度及高极限转速的特点,因此可广泛用于立磨,立车低速大扭传动领域。(The invention discloses a bidirectional roller combined bearing assembled on a direct-drive vertical mill, which comprises a shell, a stator, a rotor and a rotary drum, wherein the stator is arranged inside the shell, the rotor is arranged inside the stator, the rotary drum is arranged in the stator, the upper end of the rotary drum is provided with a grinding disc, the upper end surface of a stator mechanism is provided with a lower static ring of the combined bearing, the lower end surface of the grinding disc mechanism is fixedly provided with an upper moving ring of the combined bearing, a cylindrical roller is arranged between the centripetal inner side of a lower static ring fixedly connected with the lower static ring and the centripetal outer side of an upper moving ring fixedly connected with the upper moving ring, a tapered roller path is arranged on the tapered end surface between the lower side of the upper moving ring and the upper side of the lower static ring, and a tapered roller is arranged in the tapered roller path in one circle; the invention adopts a unique structure, realizes a radial and axial bidirectional load combined bearing, has the characteristics of convenient vertical assembly, bidirectional bearing, high rigidity, high precision and high limit rotating speed of the permanent magnet direct drive motor used for the vertical mill, and can be widely used in the fields of vertical mill and low-speed high-torque transmission of vertical lathes.)

1. The utility model provides an equipment is directly driving two-way roller combination bearing on standing to grind, includes casing, stator, rotor and rotary drum, and the stator setting is inside the casing, and stator mechanism is constituteed with the casing to the stator, and the rotor setting is inboard at the stator, and the rotary drum setting is in the stator, and the upper end of rotary drum is provided with the mill, and the mill mechanism, its characterized in that are constituteed to rotary drum and mill: the upper end face of the stator mechanism is provided with a lower static ring of the combined bearing, the lower end face of the grinding disc mechanism is fixed with an upper moving ring of the combined bearing, a cylindrical roller is arranged between the centripetal inner side of a lower static ring fixedly connected with the lower static ring and the centripetal outer side of an upper moving ring fixedly connected with the upper moving ring, a tapered roller path is arranged on the tapered end face between the lower side of the upper moving ring and the upper side of the lower static ring, and a tapered roller is arranged in the tapered roller path in one circle.

2. The bidirectional roller combined bearing assembled on the direct-drive vertical mill as claimed in claim 1, wherein: the tapered roller is provided with a retainer.

3. The bidirectional roller combined bearing assembled on the direct-drive vertical mill as claimed in claim 2, wherein: the retainer is made of brass or aluminum alloy.

4. The bidirectional roller combined bearing assembled on the direct-drive vertical mill as claimed in claim 1, wherein: the centripetal inner side of a lower static ring fixedly connected with a lower static ring is provided with a cylindrical roller between the centripetal outer sides of an upper moving ring fixedly connected with an upper moving ring, the cylindrical roller mainly bears the radial load of a rotor, the upper and lower assembly of the rotor is convenient, a nylon or brass isolating block with radian on two sides is additionally arranged in the middle of the cylindrical roller, and the centripetal inner side groove of the lower static ring is embedded.

5. The bidirectional roller combination bearing assembled on the direct-drive vertical mill as claimed in claim 4, wherein: and a chamfer is arranged at the part of the lower end of the upper moving ring and the initial assembly and combination of the cylindrical roller.

6. The bidirectional roller combined bearing assembled on the direct-drive vertical mill as claimed in claim 5, wherein: the upper moving coil is provided with a plurality of same mounting holes and is connected with the grinding disc through the mounting holes in a combined manner.

7. The bidirectional roller combined bearing assembled on the direct-drive vertical mill as claimed in claim 6, wherein: the upper moving coil and the lower static coil can be overturned to be assembled for use.

8. The bidirectional roller combined bearing assembled on the direct-drive vertical mill as claimed in claim 1, wherein: for a small direct-drive vertical mill with small volume and diameter, the bidirectional roller combined bearing can be assembled at the bottom of the shell.

Technical Field

The invention relates to the technical field of combined bearings, in particular to a bidirectional roller combined bearing assembled on a direct-drive vertical mill.

Background

At present, a bearing mainly comprises an inner ring, an outer ring, a rolling body and a retainer, is simple in structure and single in use performance, but not only needs to rotate accurately on some equipment, but also needs to bear axial and radial loads by the bearing, sometimes needs to bear overturning moment, and at the moment, the single bearing cannot be used.

The application range of the combined bearing is wider and wider, the use performance of the combined bearing is improved continuously, but at present, high-precision axial and radial combined bearings which are generally adopted at home and abroad mostly adopt cylindrical roller combination, a group of cylindrical roller combination is adopted in the radial direction, and bidirectional thrust cylindrical roller combination is adopted in the axial bearing. The structure can bear certain axial and radial loads, but certain sliding can be generated on the high-speed performance due to the influence of centrifugal force of the cylindrical roller in the operation process, the rotating precision of the cylindrical roller can be seriously influenced by the sliding, and the stable uniform bearing performance is difficult to ensure, so that the overall performance of the bearing is influenced. Chinese patent application No. 201010158281.5 discloses a radial roller and axial thrust tapered roller combination bearing, has solved the problem of rotation accuracy and stable bearing performance, but the quiet circle setting of this technique is between last movable coil and lower movable coil, all has tapered roller about the quiet circle promptly, in order to guarantee the assembly accuracy, need be fixed together with upper and lower movable coil and must not divide the piece before the installation. If the disclosed technology is applied to the assembly of permanent magnet direct-drive vertical mill products, inconvenience is brought to the vertical installation of the stator and the rotor, and the requirement in practical use cannot be met, so that an improved technology is urgently needed in the market to solve the problems.

Disclosure of Invention

The invention aims to overcome the existing defects, provides the bidirectional roller combined bearing assembled on the direct-drive vertical mill, has the characteristics of novel structural design, safety, reliability, long service life, high rigidity, high precision and convenience in installation of the permanent magnet motor rotor and the stator for the vertical mill, and can effectively solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an equipment is in directly driving two-way roller combination bearing who grinds immediately, includes casing, stator, rotor and rotary drum, and the stator setting is inside the casing, and stator mechanism is constituteed to stator and casing, and the rotor setting is inboard at the stator, and the rotary drum setting is in the stator, and the upper end of rotary drum is provided with the mill, and mill mechanism is constituteed with the mill to the rotary drum, stator mechanism up end is provided with combination bearing's lower quiet circle, and mill mechanism's lower terminal surface is fixed with combination bearing's last movable coil, and the lower quiet circle links firmly down the entad inboard of lower quiet circle ring and the entad outside of last movable coil ring that the last movable coil links firmly are equipped with cylindrical roller between the entad outside, last movable coil downside and the quiet circle upside down between the tapered end be equipped with tapered roller, a week is equipped with tapered roller in the tapered roller.

Furthermore, a retainer is arranged on the tapered roller.

Further, the holder is made of brass or an aluminum alloy.

Further, a cylindrical roller is arranged between the centripetal inner side of a lower static ring fixedly connected with a lower static ring and the centripetal outer side of an upper moving ring fixedly connected with an upper moving ring, the cylindrical roller is mainly used for bearing the radial load of a rotor, the upper and lower assembly of the rotor is facilitated, a nylon or brass isolating block with radian on two sides is additionally arranged in the middle of the cylindrical roller, and the centripetal inner side groove of the lower static ring is embedded.

Furthermore, a chamfer is arranged at the part of the lower end of the upper moving ring and the cylindrical roller which is initially assembled and combined.

Furthermore, the upper moving coil is provided with a plurality of same mounting holes and is connected with the grinding disc in a combined manner through the mounting holes, so that the mounting is convenient.

Furthermore, the upper movable ring and the lower fixed ring can be turned over and assembled for use.

Further, for a small direct-drive vertical mill with small size and diameter, the bidirectional roller combined bearing can be assembled at the bottom of the shell.

Compared with the prior art, the invention has the beneficial effects that:

the obvious effect is as follows:

the invention adopts the integrally combined radial and axial bidirectional load combined bearing, has the characteristics of combined bearing, high rigidity, high precision and high limit rotating speed, is convenient for the vertical assembly of the motor rotor, and ensures the vertical flexibility or does not twist the cylindrical roller during the assembly of the combined bearing.

2. The thrust tapered roller structurally ensures that the sliding friction of a product is reduced in heavy load work, the service life of the bearing is prolonged, and the maximum contact surface of the bearing is combined during bearing capacity, so that the bearing capacity of the product is improved.

3. The permanent magnet motor direct-drive vertical mill is applied to a permanent magnet motor direct-drive vertical mill, the permanent magnet motor direct-drive vertical mill product brings convenience for vertically installing the stator and the rotor, and stable operation is guaranteed under the condition that the stator and the rotor do not sweep the chamber.

Drawings

FIG. 1 is a schematic view of the upper moving coil and the lower stationary coil of the present invention;

FIG. 2 is a front isometric view of the present invention;

FIG. 3 is a schematic structural view of the present invention applied to a small direct-drive vertical mill;

FIG. 4 is an isometric view of the invention applied to a small direct-drive vertical mill.

In the figure: 1 lower static ring, 2 lower static ring, 3 stator, 4 rotor, 5 revolving drum, 6 shell, 7 retainer, 8 grinding disc, 9 upper moving ring, 10 cylindrical roller, 11 upper moving ring, 12 conical roller path, 13 conical roller.

Detailed Description

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The invention is described in detail with reference to the accompanying drawings, which provide a technical solution: a two-way roller combined bearing assembled on a direct-drive vertical mill, a stator 3 is arranged in a shell 6, the stator and the shell form a stator mechanism, a lower stationary ring 1 of the combined bearing is arranged on the upper end surface of the stator mechanism of a permanent magnet direct-drive motor, a grinding disc 8 is arranged on the upper end of a rotary drum 5, the rotary drum and the grinding disc form a grinding disc mechanism, an upper moving ring 11 of the combined bearing is fixed on the lower end surface of the grinding disc mechanism of the vertical mill, and a cylindrical roller 10 is arranged between the centripetal inner side of a lower stationary ring 2 fixedly connected with the lower stationary ring and the centripetal outer side of an upper moving ring 9 fixedly connected with the upper moving ring; the tapered end surface between the lower side of the upper moving ring and the upper side of the lower static ring is provided with a tapered raceway 12 surface, and a tapered roller is arranged in the tapered raceway surface in a circle.

The tapered rollers 13 are also provided with a retainer 7 made of brass or aluminum alloy.

A cylindrical roller is arranged between the centripetal inner side of a lower static ring fixedly connected with a lower static ring and the centripetal outer side of an upper moving ring fixedly connected with an upper moving ring, and the cylindrical roller is mainly used for bearing the radial load of the rotor; in order to facilitate the up-and-down assembly of the motor rotor, a nylon or brass isolating block with radian on two sides is additionally arranged in the middle of a roller and is embedded in a centripetal inner side groove of a lower static ring fixedly connected with a lower static ring; the upper and lower flexibility of the combined bearing during assembly is ensured or the cylindrical roller is not twisted, and the chamfering degree of the part of the lower end of the upper moving ring and the cylindrical roller which are initially assembled and combined is larger.

The upper end of the lower static ring and the outer side of the circumferential center end face of the lower static ring are both raceway surfaces and bear axial and radial loads transmitted by the rollers, and the lower end of the upper moving ring and the inner side of the circumferential center end face of the upper moving ring are both raceway surfaces and bear the axial and radial loads transmitted by the rollers.

The upper surface or the bottom surface of the circumference of the lower static ring is provided with a certain number of mounting holes which are fixed with the upper end surface of the motor stator mechanism; the upper surface or the side surface of the upper moving coil is provided with a certain number of mounting holes which are fixed with the grinding disc mechanism.

Compared with an upper moving coil, the bidirectional roller combined bearing also has a moving coil structure, the upper moving coil is fixedly connected with the upper moving coil by an upper moving coil ring and is screwed at the groove of a grinding disc mechanism after being embedded, the up-and-down flexibility of the combined bearing during assembly is ensured, the upper moving coil is mainly connected with a grinding disc of a working rotating part, and a certain gap is radially ensured between a motor stator and a rotor 4 to ensure that the chamber is not swept; the rotary drum is arranged in the stator, the upper end of the rotary drum is provided with a grinding disc 8, a tapered raceway surface is arranged on one circle of the lower end surface of the upper moving coil, and the upper moving coil is provided with a plurality of identical mounting holes and can be conveniently combined and connected with a grinding disc mechanism; the upper moving coil and the lower static coil can also be overturned for assembly and use, and can be appropriately screwed with the grinding disc mechanism and the stator mechanism according to the situation.

According to the bidirectional roller combined bearing, the axial roller path between the lower static ring and the upper moving ring is internally provided with the tapered roller and the retainer, the tapered roller path surface and the tapered roller path surface are in a logarithmic curve form, the generatrix of the tapered roller matched with the tapered roller path surface is also in a logarithmic curve structure, and the maximum contact bearing capacity of the tapered roller combined bearing and the roller path surface is ensured.

The retainer can guide the tapered rollers to be evenly distributed and stably rotate circumferentially, the retainer has two mounting modes, one mode is that the centers of the tapered rollers are provided with holes, the retainer and the tapered rollers are directly fixed together through pin shafts, and the retainer is supported by the tapered rollers. And secondly, the retainer is provided with a tapered roller pocket, and the tapered roller directly supports the retainer after being arranged in the retainer. The material of the retainer can be brass, aluminum alloy or steel pieces and the like according to different occasions and requirements.

According to the bidirectional roller combined bearing, the cylindrical roller is arranged between the centripetal inner side of the lower static ring fixedly connected with the lower static ring and the centripetal outer side of the upper dynamic ring fixedly connected with the upper dynamic ring and mainly bears the radial load of a rotor. In order to facilitate the upper and lower assembly of the motor rotor, a nylon or brass isolating block with radian on two sides is additionally arranged in the middle of the roller, and a cylindrical roller embedded in a centripetal inner side groove of a lower static ring fixedly connected with a lower static ring can be a full-complement arrangement roller group and can also be additionally arranged in the middle of the roller. In order to facilitate the vertical assembly of the motor rotor, ensure the vertical flexibility during the assembly of the combined bearing or prevent the cylindrical roller from being twisted, the chamfer angle of the part of the initial assembly combination of the lower end of the upper moving ring and the cylindrical roller is slightly larger.

When the bidirectional roller combined bearing is applied to the upper end part of a permanent magnet direct-drive motor stator of a vertical mill or the peripheral part of the lower surface of a vertical lathe disc of a large permanent magnet direct-drive vertical lathe, the lowest end of a vertical permanent magnet direct-drive motor rotor is provided with a positioning bearing.

When the bidirectional roller combined bearing is applied to the supporting positions of the lower end of the rotor and the base of the vertical mill permanent-magnet direct-drive motor, a buffer guide wheel supporting mechanism is arranged between the peripheral surface of the uppermost rotor of the permanent-magnet direct-drive motor and the stator so as to centralize a grinding disc of the vertical mill to stably operate under the condition of ensuring that the stator and the rotor do not sweep a chamber.

In the processing and manufacturing processes of the bidirectional roller combined bearing, the contact between the tapered roller path and the tapered roller adopts a logarithmic curve form, so that the maximum contact surface of the combined bearing during bearing capacity is ensured, and the bearing capacity of a product is improved.

While there have been shown and described what are at present considered the fundamental principles of the invention, its essential features and advantages, the invention further resides in various changes and modifications which fall within the scope of the invention as claimed.