Supporting roller bearing device

Abstract

The utility model relates to a back-up roll bearing device in the field of metallurgical mechanical equipment, which comprises a device body, and the device body comprises a roller; the surface of the roller is coated with a protective layer; receiving discs are symmetrically mounted on the two sides in the roller; a main shaft is arranged on the receiving disc in a penetrating mode, and end socket devices are installed at the ends of the two sides of the main shaft. The clearance adjusting device is improved and designed, so that the stability of the device is improved; the design of the coating protection layer is improved to isolate high temperature, and the heat resistance and wear resistance of the device are improved; an oil injection hole is improved to facilitate repeated oil injection; the sealing mode is optimized, foreign matter is prevented from entering the bearing, meanwhile, leakage of lubricating oil is avoided, the sealing performance and reliability of the back-up roll bearing device are improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of metallurgical mechanical equipment, in particular to a backup roll bearing device. Background Art

[0002] In industrial production such as steel rolling, the backup roll bearing device is one of the key components of a rolling mill. During the rolling process of the rolling mill, wear, scratches, and fatigue layers and other defects will occur between the backup roll and the bearing, which directly affects the stability of the rolling mill, the smooth operation of the production line, production consumption, and product quality. It is necessary to regularly disassemble the bearing seats at both ends of the backup roll for correction; with the development of industrial production, higher requirements are put forward for rolling mill equipment, rolling technology, roll manufacturing, and use technology. However, some existing backup roll bearing devices have some deficiencies. During the operation of the rolling mill, axial forces and axial impacts will be generated on each roll, and the large impact force will cause parts to deform and damage, and even burn out the bearing, affecting normal production; the lubrication conditions have a great influence on the working performance of the bearing. There is no oil injection hole, and the lubrication effect will be significantly reduced after long-term use, affecting the service life and causing bearing damage; the working environment is harsh, and higher requirements are placed on the sealing performance of the bearing. Summary of the Utility Model

[0003] To overcome the above defects, the utility model provides a backup roll bearing device, which solves the problems raised in the above background art. The clearance adjustment device is improved in design to improve the stability of the device; the coating protection layer is improved in design to isolate high temperature, increasing the heat resistance and wear resistance of the device; the oil injection hole is improved in design for repeated oil injection; the sealing method is optimized to prevent foreign objects from entering the bearing and avoid oil leakage at the same time, improving the sealing performance, reliability, and service life of the backup roll bearing device.

[0004] To achieve the above object, the utility model provides a backup roll bearing device, including a device body, and the device body includes a drum; a protection layer is coated on the surface of the drum; receiving plates are symmetrically installed on both sides inside the drum; a main shaft penetrates through the receiving plates, and sealing head devices are installed on both ends of the main shaft.

[0005] When the utility model works, receiving plates are symmetrically installed on both sides inside a roller with two layers of rubber materials, namely an inner protective layer and an outer protective layer, coated on its surface. A main shaft penetrates through the receiving plates, and sealing head devices are installed on both ends of the main shaft. By rotating an adjusting nut, the clearance adjusting device is axially and radially moved on a bearing seat to clamp the bearing seat and the end of the main shaft, avoiding the phenomenon of "axial shifting" during production. The bearing seat is fixedly installed on a sealing cover, and a side sealing cover and an end cover are respectively installed on the inner and outer sides of the sealing cover. The side sealing cover and the end cover are fixed to the sealing cover by screws to achieve the sealing of the entire end periphery. Lubricating oil enters the cavity through an oil injection hole on the sealing cover, and a sealing component seals the oil injection hole, enabling repeated oil injection. The oil seal device is generally in a "sawtooth shape" angled downward and is fitted on the outer side of the side sealing cover, which can effectively prevent the lubricating oil from overflowing from the cavity and enhance the sealing effect. If the lubricating oil in the cavity fails or is unqualified, the oil seal device can be disassembled to quickly replace and discharge the lubricating oil.

[0006] The beneficial effects of the utility model are as follows. The utility model provides a support roll bearing device. The utility model improves and designs the clearance adjusting device, enhancing the stability of the device; improves and designs the coated protective layer to isolate high temperature, increasing the heat resistance and wear resistance of the device; improves and designs the oil injection hole for repeated oil injection; optimizes the sealing method to prevent foreign objects from entering the bearing and avoid the leakage of lubricating oil, improving the sealing performance, reliability, and service life of the support roll bearing device.

[0007] As a further improvement of the utility model, to ensure good sealing performance of the device and improve the reliability of the device; the sealing head device includes a bearing seat and a clearance adjusting component arranged on the bearing seat; the bearing seat is fixedly installed on the sealing cover; a side sealing cover and an end cover are respectively installed on the inner and outer sides of the sealing cover. The side sealing cover and the end cover are fixed to the sealing cover by screws to achieve the sealing of the entire end periphery; an oil injection hole and a sealing component are also arranged on the sealing cover. Lubricating oil enters the cavity through the oil injection hole to achieve repeated oil injection, and the sealing component seals the oil injection hole.

[0008] As a further improvement of the utility model, to avoid the leakage of lubricating oil and optimize the sealing method of the device; an oil seal device is cooperatively arranged on the side sealing cover. The oil seal device is generally in a "sawtooth shape" angled downward and is fitted on the outer side of the side sealing cover, which can effectively prevent the lubricating oil from overflowing from the cavity and enhance the sealing effect; the oil seal device can be disassembled separately, facilitating the replacement and discharge of the failed and unqualified lubricating oil in the cavity.

[0009] As a further improvement of the present utility model, in order to avoid the occurrence of the "axial shift" phenomenon and improve the stability of the device; the clearance adjustment assembly includes a clearance adjustment device and an adjustment nut arranged in cooperation with the clearance adjustment device; by rotating the adjustment nut, the clearance adjustment device is axially and radially moved on the bearing seat to realize the clamping of the bearing seat and the spindle end, avoiding the generation of the "axial shift" phenomenon during the production process and improving the stability of the device.

[0010] As a further improvement of the present utility model, in order to effectively isolate the external working environment from the device and extend the service life of the device; and to increase the heat resistance and wear resistance of the device; the protective layer coated on the surface of the drum includes two layers of rubber materials, namely an inner protective layer and an outer protective layer. This protective layer can form an effective isolation to prevent objects from directly contacting the drum, increasing the heat resistance and wear resistance of the device, extending the service life of the device, and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] For the convenience of those skilled in the art to understand, the present utility model will be further described below in conjunction with the drawings:

[0012] Figure 1 is a sectional view of the present utility model.

[0013] Figure 2 is the Figure 1 enlarged sectional view of part A in the present utility model.

[0014] Wherein, 1 is the head device, 2 is the drum, 3 is the adapter plate, 4 is the main shaft, 5 is the outer protective layer, 6 is the inner protective layer, 7 is the sealing assembly, 8 is the oil seal device, 9 is the bearing seat, 10 is the sealing cover, 11 is the screw, 12 is the adjustment nut, 13 is the clearance adjustment device, 14 is the end cover, and 15 is the side sealing cover. SPECIFIC EMBODIMENTS

[0015] As Figure 1-2As shown in the figure, to achieve the above object, the present utility model provides a support roll bearing device, including a device body, wherein the device body includes a roller 2; a protective layer is coated on the surface of the roller 2; receiving plates 3 are symmetrically installed on both sides inside the roller 2; a main shaft 4 is penetratingly arranged on the receiving plates 3, and sealing head devices 1 are installed on both ends of the main shaft 4; the sealing head device 1 includes a bearing seat 9 and a clearance adjusting assembly arranged on the bearing seat 9; the bearing seat 9 is fixedly installed on a sealing cover 10; side sealing covers 15 and end covers 14 are respectively installed on the inner and outer sides of the sealing cover 10, and the side sealing covers 15 and end covers 14 are fixed to the sealing cover 10 by screws 11 to achieve the sealing of the entire end periphery; an oil injection hole and a sealing assembly 7 are further arranged on the sealing cover 10, lubricating oil enters the cavity from the oil injection hole to achieve repeated oil injection, and the sealing assembly 7 seals the oil injection hole; an oil seal device 8 is cooperatively arranged on the side sealing cover 15, and the oil seal device 8 is generally in a "sawtooth shape" with an angle downward and is fitted on the outer side of the side sealing cover 15, which can effectively prevent the lubricating oil from overflowing from the cavity and enhance the sealing effect; the oil seal device 8 can be disassembled separately to facilitate the replacement and discharge of the ineffective and unqualified lubricating oil in the cavity; the clearance adjusting assembly includes a clearance adjusting device 13 and an adjusting nut 12 arranged in cooperation with the clearance adjusting device 13; by rotating the adjusting nut 12, the clearance adjusting device 13 is axially and radially moved on the bearing seat 9 to achieve the clamping of the bearing seat 9 and the end of the main shaft 4, avoiding the occurrence of the "shaft stringing" phenomenon during the production process and improving the stability of the device; the protective layer coated on the surface of the roller 2 includes two layers of rubber materials, an inner protective layer 6 and an outer protective layer 5, which can form an effective isolation to prevent objects from directly contacting the roller 2, increase the heat resistance and wear resistance of the device, extend the service life of the device, and save production costs.

[0016] When the present utility model works, receiving plates 3 are symmetrically installed on both sides inside the roller 2 coated with two layers of rubber materials, an inner protective layer 6 and an outer protective layer 5 on the surface, the main shaft 4 is penetratingly arranged on the receiving plates 3, and sealing head devices 1 are installed on both ends of the main shaft 4; by rotating the adjusting nut 12, the clearance adjusting device 13 is axially and radially moved on the bearing seat 9 to achieve the clamping of the bearing seat 9 and the end of the main shaft 4, avoiding the occurrence of the "shaft stringing" phenomenon during the production process; the bearing seat 9 is fixedly installed on the sealing cover 10, side sealing covers 15 and end covers 14 are respectively installed on the inner and outer sides of the sealing cover 10, and the side sealing covers 15 and end covers 14 are fixed to the sealing cover 10 by screws 11 to achieve the sealing of the entire end periphery; lubricating oil enters the cavity from the oil injection hole on the sealing cover 10, and the sealing assembly 7 seals the oil injection hole to achieve repeated oil injection; the oil seal device 8 is generally in a "sawtooth shape" with an angle downward and is fitted on the outer side of the side sealing cover 15, which can effectively prevent the lubricating oil from overflowing from the cavity and enhance the sealing effect. If the lubricating oil in the cavity fails or is unqualified, by disassembling the oil seal device 8, the lubricating oil can be quickly replaced and discharged.

[0017] The above are only the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements should also be regarded as within the protection scope of the present utility model.

Claims

1. A support roller bearing device, comprising a device body, characterized in that: The device body comprises a roller (2); the surface of the roller (2) is coated with a protective layer; receiving plates (3) are symmetrically installed on both sides of the roller (2); a main shaft (4) is provided through the receiving plate (3), and a head device (1) is installed on both ends of the main shaft (4); the head device (1) comprises a bearing seat (9) and a clearance adjustment component arranged on the bearing seat (9); the bearing seat (9) is fixedly installed on the sealing cover (10); side sealing covers (15) and end covers (14) are installed on the inner and outer sides of the sealing cover (10), respectively, and the side sealing covers (15) and the end covers (14) are connected to the sealing cover (10) ) is fixed by screws (11) to achieve sealing of the entire end head periphery; the sealing cover (10) is also provided with an oil filling hole and a sealing assembly (7), and lubricating oil enters the cavity from the oil filling hole to achieve repeated oil filling, and the sealing assembly (7) seals the oil filling hole; the side sealing cover (15) is provided with an oil sealing device (8), the oil sealing device (8) is generally in a "serrated" shape with an angle downward and is embedded in the outer side of the side sealing cover (15), which can effectively prevent the lubricating oil from overflowing from the cavity and enhance the sealing effect; the oil sealing device (8) can be removed separately, so that the failed and unqualified lubricating oil in the cavity can be replaced and discharged.

2. A support roller bearing device according to claim 1, characterized in that: The clearance adjustment assembly comprises a clearance adjustment device (13) and an adjustment nut (12) arranged to cooperate with the clearance adjustment device (13); the adjustment nut (12) is rotated to adjust the clearance adjustment device (13) to move axially and radially on the bearing seat (9), thereby achieving clamping of the bearing seat (9) and the end of the main shaft (4), avoiding the occurrence of a "shaft stringing" phenomenon during the production process, and improving the stability of the device.

3. A support roller bearing device according to claim 1, characterized in that: The protective layer coated on the surface of the roller (2) comprises two layers of rubber, an inner protective layer (6) and an outer protective layer (5). The protective layer can form an effective isolation to prevent objects from directly contacting the roller (2), thereby increasing the heat resistance and wear resistance of the device, extending the service life of the device, and saving production costs.

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