Bearing units and seals
A technology of a bearing device and a sealing device, applied in the field of bearing devices, can solve problems such as damage to the roller 90
Active Publication Date: 2020-10-16
JTEKT CORP
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
If, for example, the bearing device 99 is continuously used in this state, the roller 90 may be damaged from this corroded portion as the starting point.
Method used
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Embodiment Construction
[0029] Embodiments of the present invention will be described below based on drawings. figure 1 is a cross-sectional view of an example of a bearing device including a main body having a seal structure according to a first embodiment of the present invention. This bearing arrangement 7 supports the rolls 3 for driving the continuous casting machines used in the steelmaking process. The roller 3 has a small-diameter shaft portion 4 at the center and large-diameter portions 5 on both axial sides thereof in an integral manner, and is club-shaped. Since the small-diameter shaft portion 4 has a smaller diameter than the large-diameter portion 5, an annular recess is formed between the small-diameter shaft portion 4 and each of the paired large-diameter portions 5, 5, and the bearing means 7 is arranged in this annular recess. Hereinafter, the boundary between the small-diameter shaft portion 4 and the large-diameter portion 5 will also be referred to as the neck portion 3 a of t...
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Abstract
Supplied with bearing unit and seal unit. The bearing device (7) comprises: a bearing main body (10), an inner ring (11) having a small-diameter shaft portion (4) fitted to the club roller (3) from the outside, a cylindrical outer ring part (12), a cylindrical The roller (13) and the shaft housing (14); and the sealing structure body (30) preventing water from entering from the outside. The sealing structure body (30) has: a labyrinth ring (31), a part of which fits into a recessed circumferential groove (6) formed in the large diameter portion (5) of the roller (3) to form a labyrinth gap; and A liner (51), attached to the axial side (16) of the inner ring (11), contacts a part of the roller (3) and prevents the ingress of water from the outside between the inner ring (11) and the roller (3) part. Sealing means are in the axial side to prevent water from entering the part from the outside, bearing means enable the roller to rotate relative to the shaft housing, the sealing means comprise: a main body part attached to an attachment formed in the axial side Groove; contact portion, on the roll side of the body portion, capable of contacting a portion of the roll.
Description
technical field [0001] The present invention relates to a bearing device that supports a pestle-shaped roll in such a manner that the roll is rotatable, and to a sealing device provided in this bearing device. Note that the pestle shape here means a cylindrical shape with a narrowed center. Background technique [0002] For drive rolls of continuous casting machines used in the steelmaking process, such as in Figure 11 As shown in , in order to suppress the deflection of the club roller caused by the heavy load, a configuration in which the small-diameter shaft portion 91 is supported at the center of the roller 90 by a bearing device 99 is adopted. In order to obtain such a configuration, each of the inner ring 95 , the outer ring member 94 , the shaft housing 93 and the like provided in the bearing device 99 has a structure capable of being separated into two. [0003] Coolant is poured on the bearing unit 99 for the continuous casting machine. Therefore, in order to pr...
Claims
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Patent Timeline
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IPC IPC(8): F16C33/78F16C33/80
CPCF16C33/7809F16C33/7826F16C33/783F16C33/80F16C2322/00F16C19/26B22D11/1287F16C13/02F16C33/76
Inventor 杉孝时丸野航
Owner JTEKT CORP