CN219605853U - Bearing sealing device for heavy-load and low-speed rotating shaft - Google Patents
Bearing sealing device for heavy-load and low-speed rotating shaft Download PDFInfo
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- CN219605853U CN219605853U CN202320804904.4U CN202320804904U CN219605853U CN 219605853 U CN219605853 U CN 219605853U CN 202320804904 U CN202320804904 U CN 202320804904U CN 219605853 U CN219605853 U CN 219605853U
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Abstract
A shaft bearing seal for heavy duty, low speed applications comprising: the device comprises a rotary shaft component, a supporting shaft, an auxiliary supporting sleeve, a bearing, a framework seal, a flange cover, a positioning spacer bush, a limiting clamping plate, a base and the like; the installation inner hole of the rotary shaft part is a stepped hole with two symmetrical ends, the auxiliary supporting sleeve, the two sets of bearings, the framework seal and the flange cover are sequentially matched and installed in the outer large hole, and the flange cover is fixed on the side end surface of the rotary shaft part through flange fastening screws in the circumferential direction; the middle part of the supporting shaft and the middle pore of the rotary shaft part pass through in a large clearance without contact and are matched with the inner holes of the auxiliary supporting sleeve, the bearing and the positioning spacer sleeve and the O-shaped seal. The bearing sealing structure has strong functionality, double protection of the framework seal and the flange can completely prevent cutting fluid and other impurities outside the rotating shaft from invading, and the auxiliary supporting wheel pair plays a role in protecting the bearing from overload. All parts are convenient and quick to disassemble and install, and the requirements of poor working environment and high bearing capacity of low-speed rotation of the rotating shaft are met.
Description
Technical field:
the utility model belongs to the field of mechanical transmission, relates to a rotating shaft sealing device, and particularly relates to a rotating shaft bearing sealing device capable of bearing heavy load and low speed for a wet environment.
The background technology is as follows:
it is well known that bearing seals have a critical impact on the accuracy and service life of the bearing. Especially in some severe service conditions, such as wet cleaning equipment and wet processing equipment, the sealed structure and the mounting mode can play a decisive role in the use of the bearing and even the performance of the whole machine. Therefore, it is important to select a proper, well-matched bearing seal.
For some multi-station cleaning devices, such as: the conveying unit of the online wet processing special machine tool mostly adopts a single-drive stepping workpiece conveying mode. The stable working performance and the conveying precision of the conveying unit directly influence the transfer efficiency and the positioning precision of the workpieces among the stations. The supporting shafts playing a key role for the conveying unit are key components of the whole conveying unit, and the service performance of various actions such as lifting, falling, advancing, retreating and the like of the conveying unit is directly determined by the quality of the rotating supporting shaft bearings. The rotary supporting rotary shaft bearing of the conveying unit has the characteristics of large bearing capacity and relatively small rotating speed, and the rotary shaft is in swinging type rotation and is generally arranged at the bottom of a support of the equipment. Because the space of the installation part is limited, the cutting fluid is easy to spray and the impurities such as scrap iron, dust and the like attack, and a more severe working environment is formed. These adverse conditions have serious influence on the service life and working performance of the rotating shaft bearing, and also increase the difficulty in maintenance of the component.
Therefore, whether the design layout of the rotating shaft bearing and the design of the sealing structure can adapt to the adverse conditions of the working environment or not can protect the inner raceway of the bearing from being damaged, and the lubricating grease in the bearing is not polluted and deteriorated, so that a reliable rotating bearing function is provided for the rotating shaft part of the conveying unit, and the integral performance of the conveying unit is very important.
For the above reasons, it is fully necessary to provide a shaft bearing sealing device which is suitable for a wet environment, can withstand heavy load, has stable performance, and rotates at a low speed, according to the working characteristics of a conveying unit supporting a shaft.
The utility model comprises the following steps:
the utility model aims to provide the rotating shaft sealing device which is suitable for severe environments such as humidity and the like, can bear heavy load, ensures stable working performance, has a compact structure and is reliable to use and rotates at a low speed. The bearing is used for reliably using the bearing of the rotary rotating part of the conveying unit in the severe working environments such as wet processing and the like, and the problem that the whole working performance of the rotary mechanism of the conveying unit is reduced due to the whole fault of the rotary mechanism of the conveying unit caused by abnormal damage of the bearing part caused by the external environment is avoided.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a shaft bearing seal for heavy duty, low speed applications comprising: the device comprises a rotary shaft component, a supporting shaft, an auxiliary supporting sleeve, a bearing, an O-shaped seal, a framework seal, a flange cover, flange fastening screws, a positioning spacer bush, a right side base, a limiting clamping plate, a limiting fastening screw and a left side base; the installation inner hole of the rotary shaft part is a stepped hole with two symmetrical ends, the auxiliary supporting sleeve, the two sets of bearings, the framework seal and the flange cover are sequentially matched and installed in the outer large hole, and the flange cover is fixed on the side end surface of the rotary shaft part through six flange fastening screws in the circumferential direction; the middle part of the supporting shaft and the middle pore of the rotary shaft part pass through in a large clearance without contact and are matched with the inner holes of the auxiliary supporting sleeve, the bearing and the positioning spacer sleeve and the O-shaped seal.
And the two ends of the rotary shaft component are sequentially and symmetrically provided with an auxiliary supporting sleeve, a bearing, an O-shaped seal, a framework seal, a flange cover, a flange fastening screw and a positioning spacer.
The two ends of the supporting shaft are connected with the right base and the left base in a matched mode through mounting holes of the right base, and the supporting shaft is connected with the right base in a locating mode through a limiting clamping plate and a limiting fastening screw at the right end.
The O-shaped seal is arranged in an inner hole sealing groove of the positioning spacer, and the outer circle of the positioning spacer is matched with the inner hole of the framework seal and the inner hole of the flange cover.
One end face of the positioning spacer bush is positioned adjacent to the bearing inner ring, the other end face of the positioning spacer bush is adjacent to one side of the right base, and the right base and the left base are two parts which are bilaterally symmetrical and are supported by two ends of the supporting shaft.
The beneficial effects obtained by adopting the technical scheme are as follows: the utility model has compact structure and reasonable layout, and the supporting bearing and the bearing sealing piece are arranged in the installation hole of the rotary shaft part, which is different from the bearing seat arranged on the fixed base in the prior art, thus being convenient for the assembly and installation of the whole device and being applicable to the conditions of compact position of the bearing seat and narrow space inside the equipment. The bearing sealing structure has strong functionality, double protection of the framework seal and the flange can completely prevent cutting fluid and other impurities outside the rotating shaft from invading, and the auxiliary supporting wheel pair plays a role in protecting the bearing from overload. All parts are convenient and quick to disassemble and install, and the requirements of poor working environment and high bearing capacity of low-speed rotation of the rotating shaft are effectively met.
Description of the drawings:
FIG. 1 is a schematic view of a shaft bearing seal for heavy duty, low speed applications according to the present utility model.
In the figure: the device comprises a 1-rotary shaft part, a 2-support shaft, a 3-auxiliary support sleeve, a 4-bearing, a 5-O-ring seal, a 6-framework seal, a 7-flange cover, 8-flange fastening screws, 9-positioning spacers, a 10-right base, a 11-limiting clamping plate, a 12-limiting fastening screw and a 13-left base.
The specific embodiment is as follows:
the present utility model will be described in detail with reference to the accompanying drawings and examples, but it should be understood that the scope of the utility model is not limited by the specific embodiments.
As shown in fig. 1: a shaft bearing seal for heavy duty, low speed applications comprising: the device comprises a rotary shaft part 1, a supporting shaft 2, an auxiliary supporting sleeve 3, a bearing 4, an O-ring seal 5, a framework seal 6, a flange cover 7, a flange fastening screw 8, a positioning spacer 9, a right base 10, a limiting clamping plate 11, a limiting fastening screw 12 and a left base 13.
The installation inner hole of the rotary shaft part 1 of the device is a stepped hole with two symmetrical ends, the big hole on the outer side of the rotary shaft part 1 is sequentially matched with the auxiliary supporting sleeve 3, the bearing 4, the framework seal 6 and the flange cover 7 from inside to outside, the outer circle of the auxiliary supporting sleeve 3, the bearing 4 and the big hole on the outer side are in transition fit, and the flange cover 7 is fixed on the side end face of the rotary shaft part 1 through six flange fastening screws 8 in the circumferential direction; the intermediate hole of the rotary shaft member 1 and the gap provided in the intermediate portion of the support shaft 2 may pass through each other without interfering with each other.
The supporting shaft 2 is matched with the auxiliary supporting sleeve 3, the bearing 4, the inner hole of the positioning spacer 9 and the O-shaped seal 5, and the auxiliary supporting sleeve 3, the bearing 4, the O-shaped seal 5, the framework seal 6, the flange cover 7, the flange fastening screw 8 and the positioning spacer 9 are symmetrically arranged on the left and right. The two ends of the supporting shaft 2 are connected and installed in a matched mode with the mounting holes at the two ends of the right base 10 and the left base 13, and the limiting clamping plate 11 on the right side is clamped on the limiting groove of the supporting shaft 2. And the two limit fastening screws 12 are fastened on the side wall of the right base 10 to complete positioning connection of the support shaft 2, and the support shaft 2 is positioned axially and radially. The axial movement and rotation of the support shaft 2 are prevented when the rotary shaft part 1 rotates, so that the support shaft 2 and the right base 10 and the left base 13 form reliable connection with fixed positions, and the phenomenon that the bearing support part is separated due to the axial movement is eliminated, and the mounting holes of the right base 10 and the left base 13 are worn due to the radial rotation of the shaft. The non-contact part in the middle of the supporting shaft 2 adopts a stepped concave form, and the transition part adopts a large cone angle form, so that on one hand, the influence of resistance when the matched part passes through installation is reduced, and on the other hand, the installation and the improvement of the assembly efficiency are facilitated. The supporting shaft 2 and the auxiliary supporting sleeve 3 adopt a fit clearance of 0.2+0.05-0.05 mm, so that the supporting shaft 2 and the auxiliary supporting sleeve 3 can be ensured not to mutually rotate and not to interfere, and the supporting shaft 2 and the auxiliary supporting sleeve 3 can relatively slide and rotate to play an auxiliary supporting role after overload of the bearing exceeds a certain deformation, thereby playing a certain overload protection role on the bearing 4. The supporting shaft 2 adopts a connecting mode that the through shaft is connected relative to the two side half shaft supports, and has the advantages of large bearing capacity and convenient installation.
The O-shaped seal 5 is arranged in a sealing groove arranged in an inner hole of the positioning spacer 9, and the inner hole of the positioning spacer 9 is connected with the support shaft 2 in a matched mode through the O-shaped seal 5. One part of the outer circle of the positioning spacer bush 9 is matched with the inner hole of the framework seal 6, and the other part of the outer circle and the inner hole of the flange form a fit clearance of 0.2+0.03-0.03 mm; one end face of the positioning spacer bush 9 is positioned adjacent to the inner ring of the bearing 4, the other end face is adjacent to one side of the right base 10, the positioning spacer bush 9 is arranged in a neutral gear between the inner ring of the bearing 4 and the base 10, and a gap of 0.15+0.05-0.05 mm is reserved between the positioning spacer bush 9 and the right base 10. The axial direction of the whole rotary shaft part 1 is ensured to be in a free state, and the whole installation of the whole rotary shaft part 1 unit is convenient. When the whole rotary shaft part 1 rotates, the positioning spacer 9 and the support shaft 2 are in a static state, and the O-shaped seal 5 prevents external cutting fluid and particles from entering the bearing cavity along the shaft diameter surface of the support shaft 2 through the gaps of the positioning spacer 9 and the right base 10.
The inner hole sealing lip of the framework seal 6 is in sealing fit with the outer circle of the positioning spacer bush 9, and is in a relative rotation state with the support shaft 2 and the positioning spacer bush 9, so that the inside of the bearing cavity is protected from being dried and clean. The flange cover 7 with the seam allowance axially positions the framework seal 6, the bearing 4 and the auxiliary supporting sleeve 3; the clearance fit of the inner hole of the flange cover 7 and the outer ring of the positioning spacer 9 not only protects the internal framework seal 6, but also prevents larger particles and scrap iron from entering the damaged framework seal 6, and indirectly plays a double protection role on the internal bearing 4.
The right base 10 and the left base 13 are equipment bodies or fixed supports (not shown in the drawing) connected with the equipment, the right base 10 and the left base 13 are bilaterally symmetrical and are supported by two ends of the supporting shaft 2, two ends of the supporting shaft 2 are connected with mounting holes of the right base 10 and the left base 13 in a matched mode, and positioning connection is achieved through a limiting clamping plate 11 and a limiting fastening screw 12 at the right end.
When the whole rotating shaft bearing sealing device is installed, grease is coated on all installation matching surfaces, a proper amount of grease is added into a bearing cavity, and then the rotating shaft component 1, the auxiliary supporting sleeve 3, the bearing 4 and the framework seal 6 are connected and installed. And (3) the O-shaped seal 5 is arranged in an inner hole sealing groove of the positioning spacer bush 9, and the positioning spacer bush 9 is inserted into an inner hole of the framework seal 6 for matching installation. The positioning spacer bush 9 is positioned close to the inner ring of the bearing 4, then the inner hole of the flange cover 7 is sleeved into the outer circle of the positioning spacer bush 9 and positioned through the spigot, and the positioning connection is carried out by utilizing six flange fastening screws 8. After the bearing sealing parts on the two sides are installed, the whole assembly of the rotary shaft part 1 is vertically dropped between the bases 10 on the two sides. When the inner hole of the positioning spacer 9 is basically coincident with the mounting holes of the right base 10 and the left base 13, the supporting shaft 2 passes through the right positioning spacer 9 (the inner hole of the flange cover 7), the O-shaped seal 5 (the skeleton seal 6), the bearing 4, the auxiliary supporting sleeve 3, the middle hole of the rotating shaft part 1, the left auxiliary supporting sleeve 3, the bearing 4, the O-shaped seal 5 (the skeleton seal 6), the positioning spacer 9 (the inner hole of the flange cover 7) and the mounting holes of the left base 13 from the mounting Kong Yici of the right base 10, and when the supporting shaft 2 enters a proper position, the limiting clamping plate 11 is arranged in a clamping groove of the supporting shaft 2 and is connected to the right base 10 by using the limiting fastening screw 12.
The structural layout of the utility model is beneficial to the integral installation of the support shaft, the left base, the right base, the limit clamping plate and the limit fastening screw after the assembly of the rotary shaft component and the bearing sealing component, and has a larger technical advantage compared with the structural form of the bearing seat layout on the left base and the right base.
The heavy-load and low-speed rotating shaft bearing sealing device not only realizes the protection requirement of the bearing under heavy load, but also has the characteristics of simple maintenance and convenient installation and disassembly, and greatly prolongs the service life of the whole rotating shaft part unit.
The present utility model is not limited to the embodiments described in the foregoing, but all technical solutions and modifications that do not depart from the gist of the utility model are intended to fall within the scope of the utility model as defined in the claims.
Claims (5)
1. A shaft bearing seal for heavy duty, low speed applications comprising: the device comprises a rotary shaft component (1), a supporting shaft (2), an auxiliary supporting sleeve (3), a bearing (4), an O-shaped seal (5), a framework seal (6), a flange cover (7), flange fastening screws (8), a positioning spacer (9), a right base (10), a limiting clamping plate (11), a limiting fastening screw (12) and a left base (13); the method is characterized in that: the installation inner hole of the rotary shaft part (1) is a stepped hole with two symmetrical ends, the auxiliary supporting sleeve (3), the two sets of bearings (4), the framework seal (6) and the flange cover (7) are sequentially arranged in the outer large hole in a matched mode, and the flange cover (7) is fixed on the side end face of the rotary shaft part (1) through six flange fastening screws (8) in the circumferential direction; the middle part of the support shaft (2) and the middle pore of the rotary shaft part (1) pass through in a large clearance without contact, and are matched with the auxiliary support sleeve (3), the bearing (4), the inner hole of the positioning spacer sleeve (9) and the O-shaped seal (5).
2. A shaft bearing seal for heavy duty, low speed applications as in claim 1, wherein: two ends of the rotary shaft part (1) are sequentially symmetrically provided with an auxiliary supporting sleeve (3), a bearing (4), an O-shaped seal (5), a framework seal (6), a flange cover (7), a flange fastening screw (8) and a positioning spacer sleeve (9).
3. A shaft bearing seal for heavy duty, low speed applications as in claim 1, wherein: the two ends of the supporting shaft (2) are connected with the right base (10) and the left base (13) in a matched mode through mounting holes, and the limiting clamping plate (11) at the right end is connected with the limiting fastening screw (12) in a positioning mode.
4. A shaft bearing seal for heavy duty, low speed applications as in claim 1, wherein: the O-shaped seal (5) is arranged in an inner hole sealing groove of the positioning spacer bush (9), and the outer circle of the positioning spacer bush (9) is matched with the inner hole of the framework seal (6) and the inner hole of the flange cover (7).
5. A shaft bearing seal for heavy duty, low speed applications as in claim 1, wherein: one end face of the positioning spacer bush (9) is adjacently positioned with the inner ring of the bearing (4), the other end face is adjacently positioned with one side of the right base (10), and the right base (10) and the left base (13) are two parts which are bilaterally symmetrical and are supported by two ends of the supporting shaft (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320804904.4U CN219605853U (en) | 2023-04-12 | 2023-04-12 | Bearing sealing device for heavy-load and low-speed rotating shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320804904.4U CN219605853U (en) | 2023-04-12 | 2023-04-12 | Bearing sealing device for heavy-load and low-speed rotating shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219605853U true CN219605853U (en) | 2023-08-29 |
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ID=87744312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320804904.4U Active CN219605853U (en) | 2023-04-12 | 2023-04-12 | Bearing sealing device for heavy-load and low-speed rotating shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219605853U (en) |
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2023
- 2023-04-12 CN CN202320804904.4U patent/CN219605853U/en active Active
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