Vacuum roller bearing external structure

Abstract

A vacuum roller bearing external structure relates to the technical field of vacuum roller supporting structures and comprises a vacuum roller, a connecting sleeve is coaxially and fixedly connected to the end of the vacuum roller, a connector connected with the interior of the vacuum roller is coaxially arranged in the connecting sleeve, and the outer end of the connector extends out of the connecting sleeve; a first external bearing is connected to the outer wall of the connector, a second external bearing is connected to the outer wall of the connecting sleeve, and a driving structure is further arranged on the connecting sleeve. The problems that in the prior art, a vacuum roller bearing is located inside to play a supporting role, an external motor drives the whole rigid face to rotate, the situation that the bearing is internally arranged and is prone to aging and abrasion and not easy to replace due to too high temperature exists, the whole roller body needs to be detached during maintenance, and operation is inconvenient are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum roller support structures, in particular to an external bearing structure of a vacuum roller. Background Art

[0002] The vacuum roll is a crucial component of the paper machine's press structure. Existing vacuum rolls typically consist of an outer roll body and a vacuum box. The outer roll body is equipped with journals on either side, and the vacuum box is built into the outer roll body. The support shafts at both ends of the vacuum box are supported on the journals via bearing blocks. One end of the drive-side journal is connected to a drive mechanism, allowing the outer roll body to rotate while the vacuum box remains stationary relative to the outer roll body. Because the drive-side journal is connected to the drive mechanism, the drive-side bearing block experiences severe vibrations due to the driving force. This can lead to lubricant leakage from the bearing block, resulting in poor lubrication and a reduced service life.

[0003] The prior art discloses a patent with the publication number CN204152974U. This solution effectively prevents lubricating oil leakage from the bearing seat, ensuring lubrication and extending service life. It comprises an inner bearing cap, an outer bearing cap, and a bearing. The inner bearing cap is mounted on the shaft neck and has a mounting slot in which the bearing is mounted. The outer bearing cap has a flange for mounting the bearing. The outer and inner bearing caps are secured together by bolts. The patent also includes a sleeve that mates with the inner ring of the bearing. The support shaft of the vacuum box is inserted into the sleeve. The outer end of the sleeve has an internal toothed portion, and the outer side of the outer bearing cap has an external toothed portion. The internal and external toothed portions mesh to form a labyrinth structure. The oil inlet of the labyrinth structure is sealed and connected via a skeleton oil seal.

[0004] The existing devices including the above patents have gradually exposed the shortcomings of the existing technology as they are used, mainly in the following aspects:

[0005] The existing vacuum roller bearings are located inside and play a supporting role. The external motor drives the entire rigid surface to rotate. The bearings are prone to aging, wear, and difficulty in replacement due to excessive temperatures. The entire roller body needs to be disassembled for maintenance, which is inconvenient to operate.

[0006] In summary, the existing technology has obvious inconveniences and defects in actual use, so it is necessary to improve it. Utility Model Content

[0007] In response to the defects in the existing technology, the utility model provides an external structure for the vacuum roller bearing to solve the problem that the vacuum roller bearing in the traditional technology is located inside to play a supporting role, and the external motor drives the entire rigid surface to rotate. The internal bearing has the problem of excessive temperature, easy aging, easy wear, and difficult replacement. The entire roller body needs to be disassembled for maintenance, which is inconvenient to operate.

[0008] To achieve the above purpose, the present invention provides the following technical solutions:

[0009] The vacuum roller bearing external structure includes a vacuum roller, a connecting sleeve coaxially fixed to the end of the vacuum roller, a connecting head coaxially provided in the connecting sleeve and connected to the interior of the vacuum roller, and an outer end portion of the connecting head protruding from the connecting sleeve;

[0010] The outer wall of the connector is connected to a first external bearing, and the outer wall of the connector sleeve is connected to a second external bearing.

[0011] The connecting sleeve is also provided with a driving structure.

[0012] As an optimized solution, a first bearing bracket supporting the first external bearing is fixedly provided on the connecting head.

[0013] As an optimized solution, a second bearing bracket supporting the second external bearing is fixedly provided on the connecting sleeve.

[0014] As an optimized solution, the driving structure includes a driven gear fixedly connected to the connecting sleeve, and the driven gear is connected to a driving gear.

[0015] As an optimized solution, a power input shaft is fixedly connected to the center of the driving gear.

[0016] As an optimized solution, the outer sleeve of the connecting sleeve is covered with a shield that covers the second external bearing, the driven gear and the driving gear.

[0017] As an optimized solution, a first labyrinth sealing structure is provided between the end of the second external bearing facing the vacuum roller and the connecting sleeve.

[0018] As an optimized solution, a support bearing is provided between the end of the shield close to the first external bearing and the connecting sleeve.

[0019] As an optimized solution, a second labyrinth sealing structure is provided between the end of the support bearing facing the first external bearing and the connecting sleeve.

[0020] As an optimized solution, one end of the shield close to the second outboard bearing is fixedly connected to the second bearing bracket.

[0021] As an optimized solution, two bearings supporting the power input shaft are arranged side by side in the shield.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] This solution is an external bearing solution. The power input shaft is connected to the reducer to drive the entire rigid surface to rotate. The first and second external bearings are all external, making maintenance and replacement of bearings more convenient. There is no need to disassemble the entire roller body when repairing and replacing bearings, thereby reducing maintenance time and cost, improving production efficiency, and avoiding contamination of the paper surface during maintenance and oiling.

[0024] The external bearing supports the weight of the vacuum roller, ensuring its stability and reliability at high-speed rotation;

[0025] The external bearing guides the rotation of the vacuum roller, reducing vibration and noise during rotation and improving operation accuracy;

[0026] The low friction characteristics of the external bearing can reduce the energy loss of the vacuum roller during rotation and improve the operating efficiency of the equipment;

[0027] By reducing wear on the vacuum roll, the bearings help extend the service life of the vacuum roll and its associated equipment;

[0028] The stability of the external bearing ensures that the vacuum roller can work continuously and stably during the production process, thereby improving the overall production efficiency;

[0029] The outboard bearing design of the vacuum roll allows for easy maintenance and replacement, helping to reduce maintenance costs and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0031] Figure 1 It is a structural diagram of the present utility model.

[0032] In the figure: 1-vacuum roller; 2-connecting sleeve; 3-connecting head; 4-first external bearing; 5-second external bearing; 6-first bearing bracket; 7-second bearing bracket; 8-protective cover; 9-first labyrinth sealing structure; 10-second labyrinth sealing structure; 11-support bearing; 12-driven gear; 13-driving gear; 14-power input shaft. DETAILED DESCRIPTION

[0033] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0034] like Figure 1 As shown, the external structure of the vacuum roller bearing includes a vacuum roller 1, a connecting sleeve 2 is coaxially fixed to the end of the vacuum roller 1, a connecting head 3 connected to the interior of the vacuum roller 1 is coaxially provided inside the connecting sleeve 2, and the outer end of the connecting head 3 extends out of the connecting sleeve 2;

[0035] The outer wall of the connector 3 is connected to a first external bearing 4, and the outer wall of the connector sleeve 2 is connected to a second external bearing 5.

[0036] The connecting sleeve 2 is also provided with a driving structure.

[0037] A first bearing bracket 6 supporting the first external bearing 4 is fixedly provided on the connecting head 3 .

[0038] A second bearing bracket 7 supporting the second outboard bearing 5 is fixedly provided on the connecting sleeve 2 .

[0039] The driving structure includes a driven gear 12 fixed to the connecting sleeve 2 , and a driving gear 13 is connected to the driven gear 12 .

[0040] A power input shaft 14 is fixedly connected to the center of the driving gear 13 .

[0041] The outer portion of the connecting sleeve 2 is covered with a shield 8 which covers the second external bearing 5 , the driven gear 12 and the driving gear 13 .

[0042] A first labyrinth sealing structure 9 is provided between the end of the second external bearing 5 facing the vacuum roller 1 and the connecting sleeve 2 .

[0043] A support bearing 11 is provided between the end of the shield 8 close to the first external bearing 4 and the connecting sleeve 2 .

[0044] A second labyrinth sealing structure 10 is provided between the connecting sleeve 2 and one end of the support bearing 11 facing the first outboard bearing 4 .

[0045] One end of the shield 8 close to the second outboard bearing 5 is fixedly connected to the second bearing bracket 7 .

[0046] Two bearings supporting the power input shaft 14 are arranged side by side in the shield 8 .

[0047] The working principle of this device is:

[0048] This solution is an external bearing solution. The power input shaft 14 is connected to the reducer to drive the entire rigid surface to rotate. The first external bearing 4 and the second external bearing 5 are all outside, making it more convenient to maintain and replace the bearings. When repairing and replacing bearings, there is no need to disassemble the entire roller body, thereby reducing maintenance time and cost, improving production efficiency, and avoiding contamination of the paper surface during maintenance and oiling.

[0049] The external bearing supports the weight of the vacuum roller 1, ensuring its stability and reliability during high-speed rotation;

[0050] The external bearing guides the rotation of the vacuum roller 1, reducing vibration and noise during rotation and improving operation accuracy;

[0051] The low friction characteristics of the external bearing can reduce the energy loss of the vacuum roller 1 during the rotation process and improve the operating efficiency of the equipment;

[0052] By reducing wear on the vacuum roll 1, the bearings help extend the service life of the vacuum roll 1 and its associated equipment;

[0053] The stability of the external bearing ensures that the vacuum roller 1 can work continuously and stably during the production process, thereby improving the overall production efficiency;

[0054] The external bearing design of the vacuum roller 1 is easy to maintain and replace, which helps to reduce maintenance costs and time.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A vacuum roller bearing external structure, comprising a vacuum roller (1), wherein a connecting sleeve (2) is coaxially fixed to the end of the vacuum roller (1), a connecting head (3) connected to the interior of the vacuum roller (1) is coaxially provided in the connecting sleeve (2), and the outer end of the connecting head (3) extends out of the connecting sleeve (2); characterized in that: The outer wall of the connecting head (3) is connected to a first external bearing (4), and the outer wall of the connecting sleeve (2) is connected to a second external bearing (5). The connecting sleeve (2) is also provided with a driving structure.

2. The vacuum roller bearing external structure according to claim 1, characterized in that: A first bearing bracket (6) supporting the first external bearing (4) is fixedly provided on the connecting head (3).

3. The vacuum roller bearing external structure according to claim 1, characterized in that: A second bearing bracket (7) supporting the second external bearing (5) is fixedly provided on the connecting sleeve (2).

4. The vacuum roller bearing external structure according to claim 3, characterized in that: The driving structure comprises a driven gear (12) fixedly connected to the connecting sleeve (2), and a driving gear (13) is connected to the driven gear (12).

5. The vacuum roller bearing external structure according to claim 4, characterized in that: A power input shaft (14) is fixedly connected to the center of the driving gear (13).

6. The vacuum roller bearing external structure according to claim 4, characterized in that: The outer sleeve of the connecting sleeve (2) is provided with a protective cover (8) covering the second external bearing (5), the driven gear (12) and the driving gear (13).

7. The vacuum roller bearing external structure according to claim 6, characterized in that: A first labyrinth sealing structure (9) is provided between the end of the second external bearing (5) facing the vacuum roller (1) and the connecting sleeve (2).

8. The vacuum roller bearing external structure according to claim 6, characterized in that: A support bearing (11) is provided between the end of the shield (8) close to the first external bearing (4) and the connecting sleeve (2).

9. The vacuum roller bearing external structure according to claim 8, characterized in that: A second labyrinth sealing structure (10) is provided between one end of the support bearing (11) facing the first external bearing (4) and the connecting sleeve (2).

10. The vacuum roller bearing external structure according to claim 6, characterized in that: One end of the shield (8) close to the second external bearing (5) is fixedly connected to the second bearing bracket (7).

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