CN204186819U - A kind of novel air-cooled antifriction-bearing housing - Google Patents

Abstract

The utility model discloses a novel air-cooled rolling bearing box, which comprises a box body and a rotating shaft passing through a tube cavity inside the box body. The tube cavity is provided with a rolling bearing, the outer ring of the rolling bearing is stuck on the wall surface of the tube cavity, and the inner ring is set on On the rotating shaft, it is characterized in that: the casing is provided with sealing end caps at the inlet and outlet ends of the tube cavity respectively, the rotating shaft protrudes from the sealing end caps, and at least one end of the part of the rotating shaft extending out of the casing is installed with a Fan blades; the external structure of the box includes a basic box wall and more than one layer of cooling sleeves arranged on the periphery of the basic box wall, between the cooling sleeve and the basic box wall, or between the inner and outer cooling sleeves A certain distance is left between them to form a heat dissipation passage, and the heat dissipation passage is arranged along the axial direction of the rotating shaft. The support sleeve and the basic box wall, or the support members of the inner and outer heat dissipation sleeves are arranged in the heat dissipation passage. The bearing box of the utility model has the advantages of good sealing and heat dissipation, high cooling efficiency, energy saving and no pollution.

Description

A New Air-cooled Rolling Bearing Box

technical field

The utility model relates to the mechanical field, in particular to an air-cooled rolling bearing box .

Background technique

Rolling bearing housings are widely used in rotating machinery such as fans, pumps, motors, and gearboxes. Because the rotation of the rolling bearing will generate a lot of heat, in order to avoid the damage of the rolling bearing due to excessive temperature, a special cooling device is required to cool the rolling bearing. The cooling method of the conventional rolling bearing box is natural air cooling or water cooling, and the bearing box is welded with structural steel or cast with cast iron. The effect of natural air cooling is not good, and water cooling will cause secondary pollution to water sources and requires the use of a large amount of water. In many areas of our country, water resources are scarce, and the cost of using water cooling is very high.

Utility model content

The technical purpose of the utility model is to provide a new resource-saving air-cooled rolling bearing box aiming at the deficiencies in the prior art. The technical solution provided by the utility model is:

A new type of air-cooled rolling bearing box, including a box body and a rotating shaft passing through the inner tube cavity of the box body, a rolling bearing is arranged in the tube cavity, the outer ring of the rolling bearing is stuck on the wall surface of the tube cavity, and the inner ring is sleeved on the rotating shaft. It is characterized by:

The box body is provided with sealing end covers at the inlet and outlet ends of the tube cavity respectively, and the rotating shaft protrudes from the sealing end covers, and at least one end of the part of the rotating shaft extending out of the box body is equipped with a fan blade;

The external structure of the box includes a basic box wall and more than one layer of cooling sleeves arranged on the periphery of the basic box wall. The distance forms a heat dissipation channel, which is arranged along the axial direction of the rotating shaft, and the heat dissipation channel is provided with supporting members supporting the heat dissipation sleeve and the basic box wall, or the inner and outer heat dissipation sleeves.

When the rolling bearing in the bearing box is working, a lot of heat will be generated, and the heat will be transferred to the bearing box and diffused into the air. The fan blades set on the rotating shaft rotate with the rotation of the rotating shaft itself to generate wind force, and take away the heat in the bearing box, heat dissipation channel or the surrounding air, and there is no need to set additional power equipment to drive the fan blades.

Further improvements to the above technical content also include:

The surface of the basic box wall, the inner surface and/or the outer surface of the heat dissipation sleeve are provided with a plurality of heat dissipation ribs protruding from the surface to further increase the heat dissipation area of the box wall.

The cooling ribs extend along the axial direction of the rotating shaft.

The radial section of the heat dissipating ribs is preferably configured as a triangular structure with rounded corners.

The heat dissipation ribs are equidistantly distributed, and the heat dissipation rib spacing of the heat dissipation sleeve is greater than the heat dissipation rib spacing on the foundation box wall. Correspondingly, the heat dissipation rib spacing of the outer heat dissipation sleeve can also be set to be greater than the heat dissipation rib spacing of the inner heat dissipation sleeve.

The base box wall and the heat dissipation sleeve are concentric structures centered on the central axis of the rotating shaft, so that the box can dissipate heat evenly.

A step is provided on the shaft of the rotating shaft, one side of the rolling bearing abuts against the side step surface of the step, and the other side of the rolling bearing is limited by a lock nut fixed on the rotating shaft.

If the front and rear ends of the rotating shaft are provided with fan blades, the side of the fan blades facing the box is set as the air inlet side, and the side facing away from the box is set as the air outlet side.

The diameter of the fan blade covers the heat dissipation channel farthest from the rotating shaft, and the diameter of the fan blade refers to the distance from the farthest point on the blade to the central axis of the rotating shaft.

A platform base is provided at the bottom of the box, and the outermost heat dissipation sleeve is integrally formed with the platform base. The box body can be installed and fixed through the platform base.

The beneficial effects of the utility model:

The rolling bearing box of the utility model is equipped with fan blades on the rotating shaft, and uses the rotation of the rotating shaft to create an air flow to quickly take away the heat on the surface of the bearing box and in the heat dissipation channel, so as to avoid damage to the rolling bearing due to excessive temperature, and no additional fan is required. Cooling equipment saves energy, has no pollution to the environment, and has a novel and effective heat dissipation structure design, high cooling efficiency, and is easy to implement.

Description of drawings

Fig. 1 is the utility model axial sectional structure schematic diagram;

Fig. 2 is a radial cross-sectional view of the utility model.

Detailed ways

In order to further clarify the technical scheme and technical purpose of the utility model, the utility model will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

A new type of air-cooled rolling bearing box as shown in Figures 1 and 2 includes a box body 6, a rotating shaft 5, a rolling bearing 3, a sealing end cover 2 and a fan blade 1.

The casing 6 is provided with a lumen, and the rotating shaft 5 passes through the lumen, and the rolling bearing 3 is installed in the lumen, and the rolling bearing 3 is sleeved on the rotating shaft 5 .

The part of the rotating shaft 5 located in the box body 6 includes shaft sections of different diameters, and a step is formed between adjacent shaft sections of different diameters, and one side of the rolling bearing 3 abuts against the side step surface of the step On the upper side, the other side of the rolling bearing 3 is limited by the lock nut 4 fixed on the rotating shaft 5, as shown in FIG. 1 . The outer ring of the rolling bearing 3 is stuck on the wall of the lumen, and the inner ring is sleeved on the rotating shaft 5 .

The sealing end cap 2 is arranged at the inlet and outlet ends of the lumen, and the rotating shaft 5 protrudes from the sealing end cap 2, and the sealing end cap 2 is used to close the space between the rotating shaft 5 and the box body. The left end of the rotating shaft 5 extending out of the casing 6 is provided with several fan blades 1, and the fan blades 1 rotate with the rotating shaft 5 to produce wind power.

The external structure of the box body 6 includes a basic box wall 10 and a heat dissipation sleeve 9 arranged on the periphery of the basic box wall 10. A certain distance is left between the heat dissipation sleeve 9 and the basic box wall 10 to form a heat dissipation channel 7. The heat dissipation channel 7 is arranged along the axial direction of the rotating shaft, and a supporting member supporting the heat dissipation sleeve 9 and the base box wall 10 is arranged in the heat dissipation channel 7 .

The surface of the basic box wall 10 and the outer surface of the heat dissipation sleeve 9 are provided with a plurality of regularly arranged heat dissipation ribs 8 protruding from the surface. The cooling ribs 8 extend along the axial direction of the rotating shaft 5 . As shown in FIG. 2 , the radial cross-section of the cooling ribs 8 is a triangular structure with rounded corners.

The base box wall 10 and the heat dissipation sleeve 9 are concentric structures centered on the central axis of the rotating shaft 5, as shown in FIG. . Further, the increased heat dissipation area of the basic box wall 10 is controlled at least 60% by adding heat dissipation ribs, and the heat dissipation area increased by the heat dissipation sleeve 9 through the heat dissipation ribs is controlled at least 40%, thereby achieving a better air cooling effect .

In order to smoothly take away the hot air in the heat dissipation passage 7, the diameter specification of the fan blade 1 should be such that it can cover the entire heat dissipation passage.

The bottom of the box body 6 is provided with a platform base, the heat dissipation sleeve 9 is integrally formed with the platform base, and the platform base is provided with mounting holes.

The box body 6 can be welded by structural steel, cast iron, or cast or forged aluminum alloy. Since the heat transfer performance of aluminum alloy is better than that of structural steel and cast iron, it is preferable to use aluminum alloy to make the bearing housing, and the cooling effect will be better.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model There will be various changes and improvements in the new model. The scope of protection required by the utility model is defined by the appended claims, description and their equivalents.

Claims (10)

1. A new type of air-cooled rolling bearing box, including a box body (6) and a rotating shaft (5) passing through the inner lumen of the box body (6), and a rolling bearing (3) is arranged in the lumen, and the rolling bearing (3) The outer ring is stuck on the wall of the lumen, and the inner ring is sleeved on the rotating shaft (5), which is characterized in that: The box body (6) is provided with sealing end caps (2) at the inlet and outlet ends of the lumen respectively, the rotating shaft (5) protrudes from the sealing end cap (2), and the rotating shaft (5) extends out of the box At least one end of the part outside the body (6) is equipped with a fan blade (1); The external structure of the box (6) includes a basic box wall (10) and more than one layer of heat dissipation sleeves (9) arranged on the periphery of the base box wall (10), and the heat dissipation sleeve (9) and the base box A certain distance is left between the walls (10) or between the inner and outer heat dissipation sleeves (9) to form a heat dissipation channel (7). The heat dissipation channel (7) is arranged along the axial direction of the rotating shaft. The heat dissipation channel (7) There are support members for supporting the heat dissipation sleeve (9) and the base box wall (10), or the inner and outer heat dissipation sleeves (9). 2. A new type of air-cooled rolling bearing box according to claim 1, characterized in that, there are multiple a cooling rib (8) protruding from its surface. 3. A new type of air-cooled rolling bearing box according to claim 2, characterized in that the heat dissipation ribs (8) extend along the axial direction of the rotating shaft (5). 4. A new type of air-cooled rolling bearing housing according to claim 3, characterized in that the radial section of the heat dissipation rib (8) is a triangular structure with rounded corners. 5. A new type of air-cooled rolling bearing box according to claim 2, 3 or 4, characterized in that the heat dissipation ribs (8) are equidistantly distributed, and the heat dissipation rib spacing of the heat dissipation sleeve (9) is larger than that of the basic box Spacing of fins on wall (10). 6. A new type of air-cooled rolling bearing box according to claim 5, characterized in that the base box wall (10) and the heat dissipation sleeve (9) are concentric with the central axis of the rotating shaft (5) structure. 7. A new type of air-cooled rolling bearing box according to claim 1, characterized in that a step is provided on the shaft of the rotating shaft (5), and one side of the rolling bearing (3) abuts against the stop On the side step surface of the step, the other side of the rolling bearing (3) is limited by a lock nut (4) fixed on the rotating shaft (5). 8. A new type of air-cooled rolling bearing box according to claim 1, characterized in that the front and rear ends of the shaft are provided with fan blades (1), and the fan blades (1) face the box One side of the body (6) is the air inlet surface, and the side facing away from the box body (6) is the air outlet surface. 9. A new type of air-cooled rolling bearing box according to any one of claims 1-4, 7 or 8, characterized in that the diameter of the fan blade (1) covers the most distance from the rotating shaft (5). Distant cooling channels. 10. A new type of air-cooled rolling bearing box according to any one of claims 1-4, 7 or 8, characterized in that, the bottom of the box (6) is provided with a platform base, and the outermost heat dissipation sleeve The tube is integrally formed with the platform base.