Vertical roll device

Abstract

The vertical roll device comprises a main shaft and a vertical roll, the main shaft is located in the vertical roll, an upper tapered roller bearing and a lower tapered roller bearing are installed between the outer side of the main shaft and the upper portion of the inner wall of the vertical roll, and a cylindrical roller bearing is installed between the outer side of the main shaft and the lower portion of the inner wall of the vertical roll. An upper flange cover is installed at the upper joint of the main shaft and the vertical roll, a lower flange cover is installed at the lower joint of the main shaft and the vertical roll, and a locking nut is further installed at the lower end of the vertical roll. The transmission path of force is external force, the vertical roll, the lower tapered roller bearing and the main shaft, when the vertical roll is subjected to upward external force, the force does not need to pass through the lower flange cover but is directly transmitted to the lower tapered roller bearing, a connecting bolt of the lower flange cover does not bear the external force, and the vertical roll, the lower flange cover and the outer ring of the cylindrical roller bearing form internal force; therefore, the damage frequency of the vertical roll caused by bolt failure is greatly reduced.

Description

Technical Field

[0001] The present application relates to the field of vertical roller devices, and in particular to a vertical roller device. Background Art

[0002] When the current vertical roller device is in use, when the surface of the vertical roller is subjected to an upward force applied by the outside world, the vertical roller has an upward movement trend. The upper flange cover and the vertical roller are connected by bolts and also have an upward movement trend. The inner and outer rings of the lower tapered roller bearing are subjected to compression force, and the inner and outer rings of the upper tapered roller bearing are subjected to tension force. Therefore, the force transmission path is external force → vertical roller → lower flange cover → lower tapered roller bearing → main shaft. From this, the three major reasons for the failure of the vertical roller device can be determined: 1. The connecting bolts are broken; 2. The bolt holes are crushed, resulting in fastening failure; 3. The clearance between the inner and outer rings of the bearings is too small, which aggravates wear and reduces service life. Utility Model Content

[0003] In order to solve the problem that the connecting bolts of the vertical roller device are easily broken and the bolt holes are crushed during use, resulting in fastening failure, too small clearance between the inner and outer rings of the bearing, aggravated wear and reduced service life, the present application provides a vertical roller device.

[0004] The vertical roller device provided in this application adopts the following technical solution:

[0005] It includes a main shaft and a vertical roller. The main shaft is located inside the vertical roller. An upper tapered roller bearing and a lower tapered roller bearing are installed between the outer side of the main shaft and the upper part of the inner wall of the vertical roller. A cylindrical roller bearing is installed between the outer side of the main shaft and the lower part of the inner wall of the vertical roller. An upper flange cover is installed at the upper connection between the main shaft and the vertical roller, and a lower flange cover is installed at the lower connection between the main shaft and the vertical roller. A locking nut is also installed at the lower end of the vertical roller.

[0006] By adopting the above technical solution, by installing a cylindrical roller bearing on the side of the main shaft, the cylindrical roller bearing does not bear axial force during use, the inner and outer rings of the lower tapered roller bearing are subjected to compression force, and the inner and outer rings of the upper tapered roller bearing are subjected to tension force, thereby improving the overall stability.

[0007] Preferably, the upper tapered roller bearing and the lower tapered roller bearing are located at the inner upper portion of the vertical roller, and the upper tapered roller bearing and the lower tapered roller bearing are installed in parallel up and down.

[0008] By adopting the above technical solution, the tapered roller bearing and the outer ring of the lower tapered roller bearing are clearance-fitted with the vertical roller, and are hammer-fitted, which can improve the overall tightness of the connection.

[0009] Preferably, the inner rings of the upper tapered roller bearing, the lower tapered roller bearing and the cylindrical roller bearing and the outer wall of the main shaft are connected by a shrink fitting process.

[0010] By adopting the above technical solution, the inner rings of the upper and lower tapered roller bearings are interference fit with the main shaft and are installed by a heat-fitting process, which can improve the stability of the overall connection.

[0011] Preferably, the lower portion of the lower tapered roller bearing does not contact the cylindrical roller bearing.

[0012] By adopting the above technical solution, when the lower part of the lower tapered roller bearing and the cylindrical roller bearing are working, the two will not affect each other, thereby improving the overall use effect.

[0013] Preferably, a first gasket is installed between the surface of the upper flange cover and the upper tapered roller bearing.

[0014] By adopting the above technical solution, the first gasket ensures the tightness between the surface of the upper flange cover and the upper tapered roller bearing, while ensuring the stability of the upper tapered roller bearing.

[0015] Preferably, a second gasket is installed between the surface of the lower flange cover and the cylindrical roller bearing.

[0016] By adopting the above technical solution, the second gasket ensures the tightness between the surface of the lower flange cover and the cylindrical roller bearing, and also ensures the stability of the cylindrical roller bearing.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. In this application, the cylindrical roller bearing does not bear axial force, the inner and outer rings of the lower tapered roller bearing are subject to compression force, and the inner and outer rings of the upper tapered roller bearing are subject to tension force. Therefore, the force transmission path is external force, vertical roller, lower tapered roller bearing, and main shaft. When the vertical roller is subjected to upward external force, the force does not need to pass through the lower flange cover, but is directly transmitted to the lower tapered roller bearing. The connecting bolts of the lower flange cover are not subjected to external force. The vertical roller, the lower flange cover and the outer ring of the cylindrical roller bearing form an internal force, which is unrelated to the external force, greatly reducing the frequency of vertical roller damage due to bolt failure.

[0019] 2. This application ensures the tightness between the surface of the upper flange cover and the upper tapered roller bearing and the stability of the upper tapered roller bearing through the first gasket, and ensures the tightness between the surface of the lower flange cover and the cylindrical roller bearing and the stability of the cylindrical roller bearing through the second gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a vertical roller device according to an embodiment of the present application;

[0021] Figure 2 This is an enlarged structural diagram of part A of a vertical roller device according to an embodiment of the present application;

[0022] Figure 3 Fig. 1 is a schematic view of the prior art structure of a vertical roller device according to an embodiment of the present application;

[0023] Fig. 1 is a schematic view of the prior art structure of a vertical roller device according to an embodiment of the present application; Fig. 2 is a schematic view of the prior art structure of a vertical roller device according to an embodiment of the present application; Fig. 3 is a schematic view of the prior art structure of a vertical roller device according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] The above and other aspects of the present application will become more apparent by describing in detail the embodiments thereof with reference to the attached drawings in which: Figure 1-3 The present application will be described in further detail.

[0025] The vertical roller device according to an embodiment of the present application includes a main shaft 4 and a vertical roller 3, the main shaft 4 is located inside the vertical roller 3, an upper tapered roller bearing 2 and a lower tapered roller bearing 5 are installed between the outer side of the main shaft 4 and the upper part of the inner wall of the vertical roller 3, a cylindrical roller bearing 6 is installed between the outer side of the main shaft 4 and the lower part of the inner wall of the vertical roller 3, an upper flange cover 1 is installed at the upper part of the connection between the main shaft 4 and the vertical roller 3, a lower flange cover 7 is installed at the lower part of the connection between the main shaft 4 and the vertical roller 3, a locking nut 8 is further installed at the lower end of the vertical roller 3, the cylindrical roller bearing 6 does not bear axial force, the inner and outer rings of the lower tapered roller bearing 5 bear compressive force, the inner and outer rings of the upper tapered roller bearing 2 bear tensile force, so the force transmission path is external force→vertical roller 3→lower tapered roller bearing 5→main shaft 4.

[0026] Please refer to Figure 1 When the vertical roller 3 is subjected to upward external force, the force does not need to pass through the lower flange cover 7, but is directly transmitted to the lower tapered roller bearing 5, the connecting bolts of the lower flange cover 7 do not bear external force, the vertical roller 3, the lower flange cover 7 and the outer ring of the cylindrical roller bearing 6 form internal force, which is irrelevant to external force, greatly reducing the frequency of vertical roller damage caused by bolt failure.

[0027] Please refer to Figure 1 The upper tapered roller bearing 2 and the lower tapered roller bearing 5 are located on the inner side of the upper part of the vertical roller 3, and the upper tapered roller bearing 2 and the lower tapered roller bearing 5 are installed in an upper and lower parallel manner, the inner rings of the upper tapered roller bearing 2 and the lower tapered roller bearing 5 and the outer wall of the main shaft 4 are connected by a hot mounting process, and the lower part of the lower tapered roller bearing 5 and the cylindrical roller bearing 6 are not in contact.

[0028] Please refer to Figure 2 The first gasket 9 is installed between the surface of the upper flange cover 1 and the upper tapered roller bearing 2, and the second gasket 10 is installed between the surface of the lower flange cover 7 and the cylindrical roller bearing 6.

[0029] The implementation principle of the vertical roller device is that the upper and lower tapered roller bearings 2 and 5 are gap-fitted with the vertical roller 3, and are knocked into place, and the inner rings of the upper and lower tapered roller bearings 2 and 5 are shrink-fitted with the main shaft 4, and are installed by hot mounting process.

[0030] During installation, first, the main shaft 4 is inverted, and the inner rings of the upper tapered roller bearing 2, the lower tapered roller bearing 5, the positioning sleeve, and the cylindrical roller bearing 6 are hot-mounted at one time, and after cooling, the locking nuts 8 are fastened.

[0031] The vertical roller 3 is sequentially placed into the outer ring of the cylindrical roller bearing 6 and the second gasket 10, the lower flange cover 7 is fastened by bolts, and then the whole is turned over by 180° so that the lower flange cover 7 faces downward; the outer ring of the lower tapered roller bearing 5 and the spacer ring are sequentially placed inside the vertical roller 3, the assembled main shaft 4 is vertically inserted until the outer ring of the lower tapered roller bearing 5 contacts the roller; then the outer ring of the upper tapered roller bearing 2 is mounted, the distance from the outer ring of the upper tapered roller bearing 2 to the step is measured to configure the first gasket 9, the gap between the inner and outer rings of the upper tapered roller bearing 2 is ensured, and finally the upper flange cover 1 is fastened.

[0032] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A vertical roller device, characterized in that: The invention comprises a main shaft (4) and a vertical roller (3), wherein the main shaft (4) is located inside the vertical roller (3), an upper tapered roller bearing (2) and a lower tapered roller bearing (5) are installed between the outer side of the main shaft (4) and the upper part of the inner wall of the vertical roller (3), a cylindrical roller bearing (6) is installed between the outer side of the main shaft (4) and the lower part of the inner wall of the vertical roller (3), an upper flange cover (1) is installed at the upper connection between the main shaft (4) and the vertical roller (3), a lower flange cover (7) is installed at the lower connection between the main shaft (4) and the vertical roller (3), and a locking nut (8) is also installed at the lower end of the vertical roller (3).

2. The vertical roller device according to claim 1, characterized in that: The upper tapered roller bearing (2) and the lower tapered roller bearing (5) are located on the inner upper part of the vertical roller (3), and the upper tapered roller bearing (2) and the lower tapered roller bearing (5) are installed in parallel up and down.

3. The vertical roller device according to claim 2, characterized in that: The inner rings of the upper tapered roller bearing (2), the lower tapered roller bearing (5), and the cylindrical roller bearing (6) are connected to the outer wall of the main shaft (4) through a thermal assembly process.

4. The vertical roller device according to claim 3, characterized in that: There is no contact between the lower portion of the lower tapered roller bearing (5) and the cylindrical roller bearing (6).

5. The vertical roller device according to claim 1, characterized in that: A first gasket (9) is installed between the surface of the upper flange cover (1) and the upper tapered roller bearing (2).

6. The vertical roller device according to claim 1, characterized in that: A second gasket (10) is installed between the surface of the lower flange cover (7) and the cylindrical roller bearing (6).

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