JPS5868552A - Oil seal mechanism of bearing section - Google Patents

Abstract

PURPOSE:To mount and demount the titled mechanism easily, and to improve durability by forming a groove section to one side surface of an oil seal member and a trough to the other side surface while setting up a lip section at the inside diameter side and an elastic ring member at the outside diameter side. CONSTITUTION:The shaft section 10a of a roll 10 is supported by a bearing 12 in a bearing housing 11, and the oil seal members 1 are symmetrically disposed at the both sides of the bearing 12. In this case, the groove sections 2 indented extending over the half or more of the width of said sealing members 1 are formed to one side surfaces of the members 1, and the trough sections 8 are oppositely shaped at both sides of the deep section of the groove section 2 in the other side surfaces. The stepped lip sections 5, intermediate sections thereof have concave sections 6, and the lip sections 7 for sealing dust are disposed at the inside diameter sides of the sealing members 1. Contact surfaces 4 joined into the bearing housing 11 are formed at the outside diameter sides, and the elastic ring members 3 are buried while notch sections, diameters thereof can be reduced, are shaped to the members 3.

Description

[Detailed Description of the Invention] It is an object of the present invention to provide a novel oil seal mechanism that accurately seals oil in the roll bearings of rolling mills, continuous casting machines, etc., is easy to install and remove, and is highly durable. That is.

The use of oil seals for bearings such as rolls has been widely practiced. That is, in such a bearing part, it is essential to ensure sufficient lubricity using oil in order to achieve smooth rotation and to improve the durability of the rolls and other parts.

However, the oil seal members conventionally used as this type of oil seal member are
It is placed between the housing and the housing and then press-fitted using a jig with a hammer or press using methods such as one-sided pushing, tilting, and partial tapping.If the oil is not tightly press-fitted in this way, oil leakage will be prevented. difficult to do. However, such strong press-fitting using a hammer, press, etc. requires a considerable number of man-hours, and has the disadvantage that impact force is transmitted to the machine parts, which may cause failure of the machine itself. It is not easy to take out the damaged parts, and in order to take them out for inspection, cleaning, or repair, a special jig and operating force are required than when driving. Therefore, when taking out the oil seal member, it is necessary to There are many things that can cause damage (
However, it is generally difficult and uneconomical to use the device repeatedly once it has been installed. Rolls such as those mentioned above are often exposed to the rolling stock, and even if they are cold rolled, they generate heat due to rolling, and the rolling mechanism requires strong processing force and driving force. It is preferable to have a butterfly made of metal or other shell members adhered to it rather than just a rubber one, in order to form a stable setting relationship, but such a conventional one has a heat resistance that is preferable for the adhesive used for adhesion. Under high temperature conditions such as those mentioned above, adhesive strength may be lost or the product may deteriorate and the sealing member and shell member may separate, and at least the desired adhesive strength may not be achieved under strong operating conditions. In any case, this would result in unavoidable drawbacks without achieving desirable durability.

The present invention was devised through research to improve the disadvantages and shortcomings of the conventional methods as described above. Specifically, a specific embodiment of the present invention will be described with reference to the attached drawings.As an example, as shown in FIG. , oil seal members 1.1 having a cross-sectional structure as shown in FIG. 3 are symmetrically arranged on both sides of the bearing 120,
The oil seal member 1 is made of a material such as rubber or soft alloy resin, and has a deep groove @2 extending over at least half of the width of the oil seal member 10 on the inner surface facing the bearing 12. It is a 5 elastic ring-shaped member, with a recess 6 formed in the middle at a position corresponding to the groove 2 described above on the inner diameter side, a stepped lip s't-ah, and a shaft portion on the outer side. 10 is arc-jointed to form a dust lip 7 that seals out intrusion of sludge-like dust mixed with cooling water, etc., and a contact surface 4 attached to the inner surface of the bearing I housing 11 on the outer diameter side. is formed.

Further, on the outer surface of the oil seal member 1, valleys 8.8 are provided so that the grooves 8.8 are located at the inner depths of 11182 as described above.
The cough oil cooling member 1 has a t-shaped structure suitable for appropriately expanding and contracting its thickness in the radial direction, but there is also an elastic material such as a steel wire near the contact surface 4 mentioned above. A ring member 3 is embedded, and the elastic ring member 3
As shown in FIG. 2, the notch St shadow is formed in a part,
A recessed hole 9 & is also formed in the stock oil seal member 1 itself at a portion corresponding to the notch 9.

Furthermore, the present invention is relatively compact, and can be appropriately installed on both sides of the center of a bearing such as the bearing 12 as shown in Figure N1, and in some cases, there is a possibility of dust intrusion. A dust seal member 15 can also be used in the high part. That is, this dust cool member 15 has a concave #122t formed on its outer surface, similar to the groove 2 of the oil seal member 1, and also embeds the elastic ring member 23 and has a notch or concave hole shaped like a #122t. f
This is also the same as in the oil seal member 1.

Further, in the oil seal member 1 as described above, a recess 14 having an inner diameter of 1lIK is provided in the groove 2,
The elastic ring member 3 or 2 is attached to the recess 14 as appropriate.
3, the sealing action of the stepped lip 5 can be reinforced by attaching a Yuzen ring material 13 which is partially cut out. That is, the elastic ring material 3 is appropriately expanded in diameter and installed in the recess 14, and the stepped lip 5 portion is effectively pressed by the restoring action from the expanded diameter state. Regarding the elastic ring member 3, there is a notch 9 as described above.
By fitting it into the bearing housing 11 in a reduced diameter state using the concave hole 9a, the springback can strengthen the pressure contact between the contact surface 40 and the inner surface of the shank 11, thereby achieving a stable setting. can.

The above-mentioned sharpener according to the present invention can be properly installed in the no-uji puffer fish 11 and can be stably fixed by the action of the contact surface 4 and the elastic ring member 30, and moreover, it is possible to use effective oil in the stepped lip 5 portion. The sealing function part, that is, this stepped lip 5 portion can sufficiently expand the diameter in the radial direction by the groove part 2, and furthermore, the groove part 2
Together with the deep part of the shaft and the valley part 8.8, a substantially average pressure contact force is obtained on the shaft part 10m, and a stable and accurate sealing relationship is formed even against shaft eccentricity and runout, and it is also possible to form a stable and accurate sealing relationship even against shaft eccentricity and runout. The spout 7 prevents dust from entering from this part, and is provided inside to reinforce the oil sealing effect of the stepped sliding part. The nine recesses 6 formed between the stepped lips 5 and 50 act as a kerosene reservoir, that is, the stepped lip 5 retains oil in the core portion and provides a desirable lubricating effect even under conditions where the supply of grease etc. is interrupted. to prevent wear of the stepped lip 5 portion.

In addition, regarding the specific settings, the shaft part 10 and the housing 11
For lifting platforms where there is a large distance between the
8 to ensure an effective setting sealing relationship even under conditions where the internal oil pressure is large.

The sharpener according to the present invention as described above allows the oil seal member 10 to expand and contract considerably in the radial direction (thickness direction), and the conventional press-fitting operation using an I-mmer or press is completely unnecessary. , simple fingertip operation or Dryno 4
- Smooth installation and removal with easy operation force like the head
It is possible to remove the parts from the contact surface 4 and the elastic ring member 3. It properly engages with the housing 11 to form a stable sealing relationship, and furthermore, the stepped lip 5 has a linear connection to the shaft portion 10m and has sufficient lubricity due to the oil sump action in the recess 6. Since it can be secured, there is less wear and tear.
As mentioned above, it is easy to install and remove, and there is no damage.It is possible to use it repeatedly. No special adhesive is required for the next product, and even if adhesive is used, it is covered and preserved with oil cool member 1, so it can be used in NL and hot rolling machines with appropriate heat resistance. It is stable and has long durability even on lifting platforms operated under high temperature and harsh conditions such as Therefore, it is an invention with great industrial effects.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show embodiments of the present invention, and FIG. 1 is a cross-sectional view of the bearing oil seal mechanism according to the present invention. FIG. 2 is a partial cutaway of the oil seal member. The front view and FIG. 3 show the cross-sectional view. However, in these drawings, 1 is an oil seal member,
2 is the groove, 3 is the buried elastic ring member, 4d
Contact surface, 5 is a stepped lip, 6 is a recess between them, T is a lip for dust sealing, 8 is a trough, 9 is a notch, 9
aa hole, 10 is roll, 10aFi its shaft, 11F
The i-bearing housing is a 12tl bearing, 13 is an elastic ring material, and 14 is a recess. Patent applicant: Mutsubishi Rubber Co., Ltd. Inventor: Michi Kitawaki
Masao Naka@/ll1 1' σ −

Claims (1)

[Claims] (1) The shaft is installed in the bearing housing, and all bearing members such as bearings are interposed to support the rotatable shaft, and the oil A- supplied to the bearing member interposed part is sealed with an oil seal member. 5, wherein a groove is integrally molded to surround the shaft portion and is recessed on one side of the oil run member over half the width thereof, and the other side is provided with a groove deep into the groove. A stepped lip portion having a concave portion in the middle and a lip portion for dust cooling are provided on the inner diameter side of the oil seal member. What is claimed is: 1. A bearing oil seal mechanism, characterized in that an abutment surface for joining inside a bearing housing is formed on the radial side, an elastic ring member is mounted on the radial side, and a notch is formed in the elastic ring member. () A recessed portion for mounting an elastic ring material is formed in the stepped lip portion of the groove portion of the oil seal member. The bearing oil seal mechanism according to item 111 of the scope of the permissible requirements, wherein the bearing part oil seal mechanism is provided with a guard ring for receiving the back side of the oil seal member.