KR200238371Y1 - Cartridge of bearing housing for use in conveyor belt - Google Patents

Abstract

The present invention relates to a bearing housing cartridge. A bearing housing cartridge installed in a plurality of rollers used in a conveyor to smoothly rotate a roller to circulate a conveyor belt, includes a ball bearing and a ball bearing in a precision assembled prefabricated bearing housing. After fastening the sealing member and the rubber packing, and firmly fastening the snap ring on the outside to provide a simple structure and assembly, easy installation and low-cost bearing housing cartridge.

Description

Bearing Housing Cartridge {Cartridge of bearing housing for use in conveyor belt}

The present invention relates to a bearing housing cartridge. Specifically, in a bearing housing cartridge installed inside a roller used for a roller conveyor or a belt conveyor, the roller is rotated smoothly to circulate the conveyor belt. The present invention relates to a bearing housing cartridge that is simple in structure and assembly, easy to install, and inexpensive by fastening a ball ring, a sealing member, and a rubber packing to the inside thereof, and then fastening a snap ring to the outside thereof.

In general, a conveyor is a machine that continuously transports cargo, and is an important unloading and transporting device that has been actively introduced in warehouses and distribution centers in accordance with recent logistics rationalization measures. Is using.

There are various types of these conveyors and are selectively used according to the use, among which the most commonly used conveyors, belt conveyors and the like.

Roller conveyors are rollers and wheels in parallel in a conveying direction and are inclined or rotated by gears to move cargo, and are divided into manpower, gravity and power.

Belt conveyor is a unloading machine that continuously carries cargos by rotating and rotating a number of rollers that support the belt under the belt and installed on the belt cars installed at both ends of the frame. The belt is mainly made of rubber or steel. The material is used.

On the other hand, rollers in such a roller conveyor and belt conveyor is a very important factor, in particular, when used in the belt conveyor to arrange a plurality of rollers on the bottom surface of the belt conveyor to move the belt or prevent the belt from sagging and rotating it The belt is circulated to support and transport the cargo. The roller should be suitable for such functions, and it is easy to maintain and maintain, and it can be used for a long time, and also does not cause problems such as noise or vibration during operation. Should not.

In addition, the bearing housings are installed in the plurality of rollers, respectively, to support a shaft that performs rotational or linear motion, and when the shaft rotates while the shaft and the ball of the bearing come into contact with each other, the ball also rotates together. have.

At this time, the rotating shaft may take a load perpendicular to the shaft and in the shaft direction, and the bearing housing must ensure the rotational movement withstanding such a load.

However, the conventional bearing housing has a problem of high wear rate due to repeated rotation of the shaft and the bearing, and foreign matter such as dust into the bearing housing or grease inside the bearing leaks to the outside.

Therefore, in order to improve this, a structure has been developed to prevent foreign matter from entering the bearing housing or to prevent grease from flowing out of the bearing housing. However, these structures have a disadvantage in that installation is relatively complicated and expensive.

The present invention is designed to solve the above problems, the bearing housing cartridge of the present invention is installed on the conveyor used for the transport of cargo in the logistics management of various industrial sites, the bearing housing of the roller to support and circulate the belt It is an object of the present invention to provide a bearing housing cartridge which is simple and convenient to improve the cartridge structure, thereby reducing the production cost of the roller, extending the life of the product, and facilitating maintenance and repair.

Another object of the present invention is to prevent the outflow of grease filled in the ball bearings inside the bearing housing cartridge and the ingress of foreign matter into the bearing housing.

1 is an internal cross-sectional view showing a bearing housing cartridge according to a preferred embodiment of the present invention;

Figure 2 is a cross-sectional view showing a coupling state of the sealing member of the present invention

Figure 3 is an installation state of the roller is installed bearing housing cartridge of the present invention

<Code Description of Main Parts of Drawing>

1: bearing housing cartridge 2: bearing housing

3: ball bearing 4: sealing member

5: rubber packing 6: snap ring

7: ball 8: outer ring

9: inner ring 10: rib

11: passage 20: roller

21: roller tube 22: shaft

30: conveyor

Bearing housing cartridge according to the present invention to achieve the above object, in the bearing housing cartridge is installed on the roller to support and circulate the belt, the bearing housing cartridge, welded to both ends of the roller tube of the roller and the shaft penetrates Bearing housings installed; A ball bearing inserted into the bearing housing; A sealing member fastened to the outside of the ball bearing to prevent the outflow of grease and the inflow of foreign foreign matter; A rubber packing fixed to the outside of the sealing member to fix the sealing member and prevent grease leakage; And a snap ring fastened to the outside of the rubber packing to firmly fix the rubber packing.

According to another embodiment of the present invention, the bearing housing cartridge of the present invention, in the sealing member, a plurality of ribs formed on the inner surface to form a labyrinth structure by combining a plurality of sealing members facing each other to form a bent passage to be.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the bearing housing cartridge 1 of the present invention is installed on both ends of a plurality of rollers 20 which are installed on a belt conveyor or a roller conveyor to support and circulate the conveyor, and the plurality of rollers are cylindrical roller tubes. It is made of 21 and rotates with the rotation of the shaft 22 installed through the inside of the center is to circulate the conveyor.

1 shows a configuration of a bearing housing cartridge according to a preferred embodiment of the present invention. Referring to the drawings, the bearing housing cartridge of the present invention is composed of a bearing housing (2), a ball bearing (3), a sealing member (4), a rubber packing (5) and a snap ring (6).

The bearing housing 2 is a container surrounding the cartridge 1 of the present invention, which is drawn to form a cup in the center portion thereof.

The bearing housing is welded to both ends of the roller tube 21 of the roller 20, and the inner center of the bearing housing is installed through the shaft 22 so that the shaft rotates simultaneously with the rotation of the bearing housing.

The ball bearing 3 is inserted into the bearing housing around the shaft 22 to help smooth rotation of the roller tube 21. In order to reduce friction, a plurality of balls 7 are provided with the outer ring 8 and the inner ring ( 9) is rotated in the state sandwiched between, as the ball bearing rotates to rotate the shaft and at the same time the roller rotates.

The ball bearing (3) is strong against fatigue, repeated stress, it is preferable to use a material having high rigidity, high hardness and the like and abrasion resistance.

In addition, grease (grease) is injected into the ball bearing (3) and melts naturally as the temperature rises by the rotation of the roller to be supplied evenly to the ball bearing surface to reduce the frictional force as well as frequent wear of the ball bearing wears the ball bearing It prevents it.

The sealing member 4 is fastened to the outside of the ball bearing 3 inside the bearing housing around the shaft to block the outflow of grease filled in the ball bearing and the inflow of external foreign matter.

Such a sealing member has a non-contact labyrinth (labyrinth) structure as shown in FIG. 2, wherein two sealing members having a plurality of ribs 10 formed on an inner surface of a round cylindrical container are inserted and bent to each other. The passage 11 is formed, which prevents grease from leaking out from the gap between the bearing housing 2 and the shaft 22 or introduces foreign substances such as dust from the outside.

That is, the grease leaking from the ball bearing 3 to the outside is zigzag-shaped and receives a pressure drop every time it passes through the narrow passage 11 so that it does not easily escape to the outside. In addition, the high speed rotation performance of the roller 20 is improved due to the labyrinth structure.

The rubber packing 5 is fastened to the outside of the sealing member 4 of the bearing housing about a shaft to seal the ball bearing 3 and the sealing member 4 from being separated from the inside of the bearing housing 2, At this time, the inner diameter of the rubber packing is slightly smaller than the outer diameter of the shaft 22 so that the rubber packing is firmly fitted to the shaft on the outer surface of the sealing member, and further prevents the outflow of grease from the sealing member to further extend the life. do.

The snap ring 6 is an annular spring which is fastened to the outside of the rubber packing 5 of the bearing housing about the shaft and inserted into the shaft or shaft to prevent separation of the ball bearing and the sealing member and the rubber packing. Is fitted in the groove formed on the outer periphery of the shaft and has elasticity so that the shaft outer periphery is firmly tightened so that the support of the rubber packing is more firmly fixed.

An example of using the bearing housing cartridge of the present invention having the configuration as described above is as follows.

After the ball bearing 3 is installed inside the bearing housing 2 which has been processed, and the two sealing members 4 having a plurality of ribs 10 are coupled to each other in a labyrinth structure and fastened to the outside of the ball bearing, In addition, the rubber packing 5 is fastened to the outer side of the sealing member to firmly couple the ball bearing and the sealing member, and the snap ring 6 is fastened to the outer side of the rubber packing to fix the components more firmly so that the bearing housing cartridge ( Complete 1).

After manufacturing the rollers 20 by welding the combined bearing housing cartridges to both ends of the roller tube 21, respectively, the shaft 22 penetrates the center of the rollers and is installed on the belt conveyor 30. Fix it to the installation.

At this time, the ball bearing 3 rotates the shaft while supporting the weight of the shaft and the load applied to the shaft. When the motor (not shown) is driven, a plurality of balls 7 of the ball bearing are rotated while the shaft rotates. As the belt rotates as the roller rotates, the cargo on the belt conveyor is smoothly carried.

In addition, as the temperature of the grease filled in the ball bearing rises, the ball bearing is evenly distributed throughout the ball bearing surface. As a result, wear does not occur well even when the ball bearing is repeatedly operated, and since the sealing member has a lever structure, the ball bearing When the grease flows out from the zigzag passage 11, each time a pressure drop is received, it is not easily escaped, and foreign matter cannot enter the inside of the bearing housing 2 from the outside.

Although the bearing housing cartridge according to the present invention has been described with reference to the illustrated drawings, the present invention is not limited by the embodiments and drawings disclosed herein, and various modifications may be made by those skilled in the art within the technical scope of the present invention. Of course it can be done.

As described above, according to the bearing housing cartridge of the present invention, the structure of the roller bearing housing cartridge of the roller which is installed in the belt conveyor which is widely used for conveyance of cargo in various logistics management in the industrial field to support and circulate the belt is simplified. It is possible to reduce the production cost of the roller, to extend the service life of the product, and to maintain and repair it easily.

In addition, by using the sealing member and rubber packing of the labyrinth structure inside the bearing housing together, it is possible to reliably prevent the leakage of grease and infiltration of foreign matters in the bearing housing and shaft clearance, and also to assemble the bearing housing cartridge. Can be simplified.

Claims (2)

In the bearing housing cartridge which is installed on the conveyor to support and circulate the belt, A bearing housing (2) welded to both ends of the roller tube (21) of the roller (20) and having a shaft (22) installed therethrough; A ball bearing 3 inserted into the bearing housing; Sealing member (4) fastened to the outside of the ball bearing to prevent the outflow of grease and the inflow of foreign matter; A rubber packing (5) fastened to the outside of the sealing member to fix the sealing member and prevent grease leakage; And A bearing housing cartridge including a snap ring (6) fastened to the outside of the rubber packing to firmly fix the rubber packing. The method of claim 1, The sealing member (4) is a bearing housing cartridge, characterized in that a plurality of ribs 10 formed on the inner surface to form a labyrinth structure is formed by combining a plurality of sealing members facing each other to form a bent passage (11).