JPS5930607B2 - Bearing roller for chain - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bearing roller for a chino used in a place where magnetic force acts, such as a magnetic crane.

Generally, when a conveyed object is loaded or unloaded from a conveyor cheno using a magnetic crane, the rotating member of the cheno's bearing, that is, the roller, becomes magnetized due to the influence of the magnetic crane, and the surrounding iron powder is attracted to the seal part of the bearing, and this adsorption occurs. There is a drawback in that the iron powder that has been removed enters the inside of the roller as the roller rotates, causing malfunction of the roller.

The object of the present invention is to obtain a bearing in which iron powder is not adsorbed to the seal portion of the bearing roller implemented in such a magnetic crane, and in which iron powder does not enter the inside of the bearing roller.

According to the present invention, in a bearing roller for a cheno, which is used where a magnetic force acts and has a rotating element interposed between an inner ring and an outer ring, each of the opposing surfaces of the inner ring and outer ring is made of a non-magnetic material. Seal members are provided, and the seal members are provided with a gap from each other,
Further, a dustproof ring is provided on the opposing surfaces of these seal members.

Therefore, since the inner ring and the outer ring are separated by the seal member and the dustproof ring, there is no possibility of iron powder getting mixed into the grease or leaking of the grease, and there is a gap between the two seal members. Therefore, there is no problem in relative movement, and there is no wear on the sealing member.
This will be explained based on the figure.

Reference numerals 1, 1, . . . each indicate a single chino, 2 a mounting plate for the chino, 3.4 a ring plate, and a pin 5 is inserted between each ring plate 3.4.

On the other hand, a roller A that freely rotates with respect to the pin 5 is pivotally supported on the pin 5 at an intermediate portion between the ring plates 3 and 4.

Particularly, as shown in FIG. 3, the roller A includes an inner ring 6 fixed to the pin 5, a rotating element or roller 7 fitted rotatably into the inner ring 6, and the rollers 7 extending outward from the pin 5, as shown in FIG. It is composed of an outer ring 8 that is loosely fitted to the roller 7 so that it can rotate freely, and the inner wall 8 of the outer ring 8 is formed on both sides of the roller 7.
A seal member 9 is provided toward the outer circumferential wall 6a of the inner ring 6.

Since the end portion 9a of the seal member 9 is extended so as to come into sliding contact with the outer circumferential wall 6a of the inner ring 6, it plays a role such as dustproofing.

The seal member 9 is generally made of a drawn thin iron plate or the like.

Further, the inner ring 6, rollers 7, outer ring 8, etc. are usually made of high carbon chromium steel and are easily magnetized.

Therefore, iron powder such as scale powder and glider powder is likely to be adsorbed at portion B in FIG.

In addition, an appropriate gap α is formed between the inner ring 6 and the end 9a of the sealing member due to the design, and since this part moves relative to each other, when the inner ring 6 and the outer ring 8 are magnetized, they are attracted to the part B. As the outer ring 8 rotates, iron powder enters the interior through the gap α.
It mixes with grease and severely deteriorates the lubricating function of the grease.

Therefore, the present invention replaces the conventional roller A shown in FIG.
This is the roller C shown in the figure.

The roller C embodying the present invention will be described below with reference to FIG.

In FIG. 4, the positional relationship among the pin 5, the inner ring 6, the rotating element, that is, the roller γ, and the outer ring 8 of the roller C is exactly the same as in the conventional example.

According to this invention 1, the thrust ring 13° 13 is fixed to the outer peripheral walls 6a, 6a of the inner ring 6, and the outer walls 13a, 13a of the thrust ring 13° 13 and the inner wall 8 of the outer ring 8 are fixed.
a.

8a is a sealing member 10°10.11 made of a non-magnetic material such as austenitic steel, brass, polymeric material, etc.
11 are opposed to each other and protrude in an abbreviated shape and are fixed.

A dustproof ring 12 made of a highly elastic material such as rubber is interposed between the opposing parts of the seal members 10 and 11 as necessary, and as shown in the figure, the opposing seal members 10 and 11 are interposed as necessary.
．． A gap is formed between 11.

In this configuration, the seal members 10 are attached to the inner wall 8a of the outer ring and the outer wall 13a of the thrust ring 13, respectively.
Since 11 is made of a non-magnetic material, even if the outer ring 8 and inner ring 6 are magnetized by the strong magnetic force of the magnetic crane, the seal members 10 and 11 will not be magnetized, and therefore iron powder etc. will be attracted to the seal member. Never.

Therefore, iron powder and the like do not pass through the gap between the seal members 10 and 11 and enter the vicinity of the rollers 7.

In this embodiment, since a dustproof ring 12 made of an elastic material is further interposed between the sealing members, the sealing effect becomes even more reliable.

As described above, this invention provides a sealing member made of a non-magnetic material at the opposing parts of the inner ring and outer ring that constitute the bearing roller of the chino, so it can withstand the strong magnetic force when using a magnetic crane. Regardless, the sealing member is not magnetized and no iron powder or the like is allowed to enter the interior of the sealing member.

Therefore, the life of the bearing roller can be dramatically extended without damaging the rollers and inner and outer rings with iron powder. Also, since the structure of the roller is exactly the same as that of the conventional roller except for the sealing member, the conventional roller can be used as is. can do.

[Brief explanation of drawings]

Figure 1 is a side view of a conventional conveyor ceno, Figure 2 is Figure 1 ■
3 is an enlarged sectional view of the bearing roller portion of FIG. 2, and FIG. 4 is an enlarged sectional view of the bearing roller portion corresponding to FIG. 3 in which the present invention is implemented. 1.1... Cheno, 2... Mounting plate, 3, 4... Link plate, 5... Pin, 6... Inner ring, 6a...
・Outer peripheral wall of the inner ring, γ... Roller, 8... Outer ring, 8a.
...Inner wall of outer ring, 9...Seal member (conventional example), 9a
... end of sealing member, 10, 11 ... sealing member (this invention), 12 ... dustproof ring, 13 ... thrust ring, 13a ... outer wall of thrust ring, A.
...Roller of conventional example, C...Roller of this invention, α°
°゛Gap.

Claims (1)

[Claims] 1. In a bearing roller for a cheno, which is used where magnetic force acts and has a rotating element interposed between an inner ring and an outer ring, a sealing member made of a non-magnetic material is provided on the opposing surfaces of the inner ring and outer ring, respectively. A bearing roller for a cheno, characterized in that the sealing members are provided with a gap between them, and a dustproof ring is provided on the opposing surface of the sealing members.