KR100384386B1 - Pillow block bearing - Google Patents

Abstract

PURPOSE: A pillow block bearing made of engineering plastic is provided to maximize the effect of bearing by installing a separate bearing disc in the pillow block bearing in order to mount a ball bearing unit utilizing the bearing disc. CONSTITUTION: A bearing unit case(11) is provided at an inner peripheral portion of a bearing hole(1) in a bearing body. A bearing disc(15) is fixed to the bearing unit case(11). The bearing disc(15) has an oil supply hole(4') communicated with a first oil supply hole(4). A bearing unit(12) having a bush(10), a ball bearing(13) equipped with balls(16), and a bearing case(14) is fixed to a roller shaft(1'). A second oil supply hole(4") is formed in the bearing case(14) of the bearing unit(12) and the second oil supply hole(4") is communicated with the first oil supply hole(4) and the oil supply hole(4').

Description

Pillow Block Bearings {PILLOW BLOCK BEARING}

The present invention relates to a pillow-type block bearing for rotating a roller shaft of a heavy-duty roller such as a large steel plate, and in particular, a bearing supporting a bearing in a pillow-type block bearing made of engineering plastic or super-engineering plastic, which is the patent application of the present inventor. In the pillow-type block bearing penetrated by the annular demand for oil supply, the nipple for oil supply, and the oil injection hole, a bearing unit consisting of a separate bush, a ball bearing with a ball and a bearing case is mounted so as to rotate flexibly in contact with the bearing disc. It relates to a pillow block bearing.

Pillow block bearings equipped with steel plate transporting rollers are generally bearings with only ball bearings in the block, or have high strength made of engineering plastics or super-engineering plastics as in the case of the applicant's prior patent No. 127248. There is a pillow-type block bearing in which oil is injected into the bearing hole of a bearing body made of a plastic material with good lubrication. However, in the former case, the roller shaft, the ball, and the block are all made of metal such as stainless steel, so that rotation is performed. As a result, the wear and tear of bearings, roller shafts and balls are easily worn and loosened. Therefore, bearings or block bearings have to be changed frequently, resulting in costly loss and reduced working efficiency. In order to put the iron plate on the roller If the roller and the block bearing are severely impacted by the steel plate during the process, the metal block bearing may be cracked, destroyed, or deformed, making it impossible to use, so it is inconvenient and inconvenient to replace the new block bearing frequently. There was this.

In the latter case, the material is made of high-strength plastic and the bearing hole is smooth, so it has excellent lubricity. In addition, if the oil is supplied to it, the rotational force of the shaft is better and it does not rust. Not only this weakness, but the bearing hole itself acts as a bearing, so when pressed under heavy load, the bearing function, that is, lubricity was weakened.

The present invention is made of a plastic material as disclosed in the prior patent of the present inventors to improve the defects of the pillow-type block bearing made of a metal material composed of the conventional ball bearing as described above, or the pillow-type block bearing which is made of plastic and supplied with oil. And a separate bearing disc in the existing pillow-type block bearing that supplies oil by the oil supply nipple, and then another ball bearing unit installed through the bearing disc to allow the bearing to maximize the bearing effect. It will be described in detail with reference to the accompanying drawings as to provide a type block bearing as follows.

1 is an overall perspective view of a pillow block bearing of the present invention.

Figure 2 is a cross-sectional view taken along the line AA 'of Figure 1;

3 is a cross-sectional view taken along the line CC 'of FIG.

Figure 4 (a) is a perspective view showing the oil supply nipple and the oil injection hole in Figure 1;

Figure 4 (b) is a cross-sectional view showing the oil injection hole and the annular demand portion in FIG.

Explanation of symbols on the main parts of the drawings

One ; Bearing hole 1 '; Ruler axis 2; Annular requirement 3; Nipples 4,4 ', 4 "for oil supply; oil injection hole 5; spring-type hinge 6; cap 7; fastening hole 8; support arm 10; bearing bush 11; bearing unit case 12; bearing unit 13; ball bearing 14; Bearing case 15; bearing disc 16; ball

It is formed by using engineering plastics such as monomer casting nylon (MC Nylon) or super-engineering plastics (hereinafter referred to as super-enpla) as raw materials, and bearing materials (including ultra high molecular weight polyethylene). The annular demand (2) is recirculated to the inner surface of 1) and the annular demand (2) is inclined communication with the oil supply nipple (3) by the oil injection hole (4) and the spring type at the upper end of the oil supply nipple (3) In the conventional pillow-type block bearing with a cap 6 connected by a hinge 5, the oil injection hole 4 and the bearing unit case 11 formed on the inner circumferential surface of the bearing hole 1 of the bearing body are attached. A separate lubricious bearing disk 15 having an oil injection hole 4 'penetrated therethrough is fixedly mounted to the bearing unit case 11, and then there is a bearing bush 10 and a ball therein. 16 built-in ball pillow A bearing unit 12 composed of a ring 13 and a bearing case 14 is pressed by a bushing 10 for bearing to a roller shaft 1 'for heavy load conveying, or a pair of buried keys and a groove coupling method (not shown) Oil) so as to be fixed to the bearing case 14 of the bearing unit 12 and the ball 16 of the ball bearing 13 in a straight line with the oil injection holes 4 and 4 '. It is a pillow-type block bearing comprised by laying up the injection hole 4 ".

Reference numeral 7 denotes a rectangular fastening hole, 8 denotes bearing support arms 8 on both sides.

As described above, in the present invention, the pillow-type block bearing is known to have excellent strength, elastic modulus, heat resistance, high level impact resistance, abrasion resistance, friction resistance, creep resistance, heat resistance, durability, chemical resistance, and molding processability. Since it is made of the same material as Enpla, corrosion resistance, impact resistance, and durability are excellent, and the bearing unit 12 is fixed together with the roller shaft 1 'and the bush 10 to rotate, and then ball bearings from the oil supply nipple (3). When the oil injection holes 4, 4 ', 4 "penetrated to the ball 16 of (13) coincide with each other, the oil is injected into the ball 16 of the ball bearing 13 through the oil injection holes. Since the bearing unit 12 is rotated in contact with the bearing disk having good lubricity, the bearing unit 12 is excellent in smoothness and lubricity and thus serves as an excellent bearing with little frictional resistance. When the pillow block bearing of the present invention is applied to a roller shaft in order to transport heavy loads, the bearing unit 12 and the bush of the pillow block bearing of the present invention are connected to the shaft 1 'of the heavy load conveying roller. 10) or by inserting various keys such as buried keys on the roller shaft 1 'and forming grooves on the bushes (not shown here), and operating the rollers, the abrasion resistance of the block bearing body is maintained even at high impact. The bearing unit 12 is fixed to the bearing unit case 11 together with the characteristics of impact resistance, heat resistance, durability and corrosion resistance, so that the sliding unit can smoothly slide while being in contact with the bearing disk 15 having good lubricity. The ball 16 embedded in the ball bearing 13 supplies oil between the bearing case 14 of the bearing unit 12 and the bearing disk 15 while storing and rotating oil, thereby providing lubricity and smoothness. As the degree is further increased, the roller shaft 1 'is rotated very smoothly with little friction by the bearing unit 12.

In the present invention, the pillow block bearing is made of a material such as Enplan or Super Enpla which is extremely excellent in impact resistance, abrasion resistance, heat resistance and corrosion resistance, and a separate ball bearing unit 12 is mounted inside the bearing hole and oil Since oil is supplied through the supply pipes 4, 4 ', and 4 ", it has excellent effects such as impact resistance, abrasion resistance, heat resistance, and corrosion resistance and lubricity, and thus, the rotational force is extremely good.

Claims (1)

It is molded from engineering plastics such as monomer casting nylon (MC Nylon) or super-engineering plastics including ultra high molecular weight polyethylene, and the annular demands (2) are encircled on the inner surface of the bearing hole (1). The request (2) is inclinedly communicated with the oil supply nipple (3) by the oil injection hole (4), and the cap (6) attached to the upper end of the oil supply nipple (3) by a spring hinge (5) is attached. In the pillow block bearing, a separate oil injection hole 4 'is formed in the bearing unit case 11 formed on the inner circumferential surface of the bearing hole 1 of the bearing body so as to coincide with the oil injection hole 4; The bearing disk 15 having good lubricity is fixed to the bearing unit case 11, and then the bearing bush 10, the ball bearing 13 and the bearing case in which the ball 16 is built, 14) bearing The knit 12 is fixedly mounted on the roller shaft 1 ′ by the bearing bush 10 by a bearing bush 10 or by a combination of a buried key and a groove (not shown), and the bearing unit 12 The oil injection hole (4 ") is installed so as to penetrate in a straight line with the oil injection hole (4) (4 ') to the bearing case (14) of the ball bearing 13 and the ball (16) One pillow block bearing.