JPH078627U - Bearing oil scattering cover - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a grease splash cover for a bearing, which is characterized in that the manufacturing cost is low and the maintenance is easy in a lubricant grease splash prevention structure on a steel plate. In a bearing structure using a plummer block, a rotating ring attached to a shaft and a cover covering the rotating ring are provided, and a seal material is rotatably mounted in a gap between the cover and the shaft. Oil and grease scattering cover for bearings.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bearing structure of a high-speed rotating machine, and more particularly, to improvement of leakage prevention of lubricating oil and grease in the bearing.

[0002]

[Prior art]

 In equipment for continuously annealing and cleaning 0.1 to 0.4 mm tin size steel sheets, it is common to pass them at a high speed of 800 to 1200 m / min to improve productivity. Therefore, the rotation speed of the plate passing roll also rises to about 1200 rotations / minute, and the oil and grease leaking from the bearing is scattered outside the bearing. In addition, the treated steel sheet is used for foodstuffs such as canned foods and drinking water, so that it is a fact that cleanliness is strictly required. Therefore, the adhesion to the steel plate due to the scattering of oils and fats causes a serious problem in terms of quality. In other words, it is natural to consider that the bearing structure will not scatter oil and fat, and maintenance cost and equipment cost will increase unless maintenance is easy and equipment cost is low.

As conventional techniques, for example, there are those disclosed in Japanese Utility Model Laid-Open No. 3-75363 and Japanese Utility Model Laid-Open No. 2-121624. Japanese Utility Model Laid-Open No. 3-75363 is characterized in that a roll shaft portion 10 as shown in FIG. 2 is provided with a male screw portion 11, and a fixed cover 12 surrounding the outer peripheral portion of the male screw portion 11 is attached. In addition, Japanese Utility Model Laid-Open No. 2-121624 discloses that an outer portion of an elastic seal 14 whose inner diameter portion is pressed against the outer diameter surface of an inner ring of a bearing 13 as shown in FIGS. 14 is a seal member for bearing sealing in which a labyrinth gap is formed around the insertion portion of 14. Originally, it was made as a non-greasy type, but as a result, it has the feature of having less external leakage.

[0004]

[Problems to be solved by the device]

 However, these conventional techniques are still not perfect and have problems. For example, in Jitsukaihei 3-75363, since the structure and assembly are complicated and the cost is high, it is unsuitable for continuous annealing equipment with many rolls, because it requires a large capital investment and maintenance cost. . Further, in No. 2-121624, the bearing cost is high and it is difficult to maintain the seal material due to wear of the seal material. Therefore, it is also unsuitable for continuous annealing equipment. The present invention has been devised to solve the above problems, and its purpose is to reduce the manufacturing cost and to facilitate maintenance in a lubricant oil scattering prevention structure of a bearing using a plummer block. The purpose is to propose a grease scattering cover for the bearing, which is characterized by the above.

[0005]

[Means for Solving the Problems]

 The present invention relates to a bearing structure using a plummer block 1 as shown in FIG. 1, in which a rotary ring 4 is attached to a shaft, a cover for covering the rotary ring is installed, and a sealing material is provided in a gap between the cover and the shaft. It is characterized by being attached rotatably.

[0006]

[Action]

 Description will be given below according to the example illustrated in FIG. The lubricating oil / oil leaked from the oil seal 3 for the plummer block 1 is scattered by the rotating force of the rotating ring 4 in the semi-radial direction, and at the same time prevents the lubricating oil / oil from flowing to the roll side along the shaft. You can

The cover 5 receives the scattered lubricating oil and fat and prevents the lubricating oil and fat from scattering outside the cover 5. At the same time, the lubricating oil and fat is made to flow down to the lower oil and fat receiving pan 8 by the drainage port 7. Further, the lubricating oil and fat that jumps over the rotating ring 4 and leaks to the roll side can be prevented from being scattered by the sealing material 6.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to FIG. The cover 5 is supported by a bracket attached to the mounting bolt for the plummer block 1, and is attached so as to wrap (dimension X) with the plummer block 1. Further, the cover 5 is of a half-split type, and maintenance of the rotary ring 4 and the sealing material 6 can be easily performed only by removing the upper cover.

The rotating ring 4 is of a half-split type, and is attached by being sandwiched by a screw on the roll shaft portion 9 ′. The sealing material 6 in the gap between the cover 5 and the roll shaft portion 9'prevents a small amount of lubricating oil and fat that jumps over the rotating ring 4 from scattering along the roll shaft portion 9'to the roll side. The seal material 6 is preferably an oil seal, felt or the like. The oil and fat accumulated in the cover 5 can be discharged to the oil and fat receiving pan 8 through the grease discharging port 7.

[0010]

[Effect of device]

 This structure can solve the quality problems of lubricant oil and fat adhesion to steel plates, which has been a problem in the past, and the simple structure facilitates maintenance, reduces manufacturing costs, and significantly improves productivity. It has an excellent effect.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a sectional view showing an example of a conventional device.

FIG. 3 is a cross-sectional view showing an example of another conventional device.

FIG. 4 is an enlarged view of a part of FIG.

[Explanation of symbols]

 1 Plummer block 2 Bearing 3 Oil seal 4 Rotating ring 5 Cover 6 Sealing material 7 Draining port 8 Oil and fat receiving pan 9'Roll shaft part 9 Roll 10 Roll shaft part 11 Roll shaft male screw part 12 Fixed cover 13 Bearing 14 Seal plate

Claims (1)

[Scope of utility model registration request] 1. A bearing structure using a plummer block, comprising a rotary ring attached to a shaft and a cover covering the rotary ring, and a seal member rotatably mounted in a gap between the cover and the shaft. A bearing oil and grease scattering cover.