Bearing and bearing steel sleeve fixing structure

Abstract

The application relates to the technical field of bearings and discloses a bearing and bearing steel sleeve fixing structure, which comprises a base, a cover plate and a bearing arranged between the base and the cover plate, the upper surface of the base and the bottom of the cover plate are both provided with mounting grooves in circular section, and the inner walls of the two mounting grooves are both fixedly connected with arc-shaped fixing plates. The bearing and bearing steel sleeve fixing structure is characterized in that the engagement design of the engaging ribs and the engaging grooves realizes the stable connection between the bearing and the arc-shaped fixing plates, compared with the traditional interference fit, the installation and dismounting are more convenient, professional equipment or knocking tools are not needed, the damage to the bearing and the steel sleeve is reduced, the falling or displacement of the bearing under the axial load is effectively prevented, and the stability and reliability of the fixing are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of bearings, in particular to a bearing and bearing steel sleeve fixing structure. BACKGROUND

[0002] A bearing is a device for supporting the relative motion of a mechanical shaft and a rotor and transmitting load, which is usually composed of an outer ring, an inner ring, rolling elements (such as balls or rollers), a retainer and a sealing cover.

[0003] When connecting the common bearing and fixing sleeve (bearing steel sleeve), the main connection mode is interference fit. During initial installation, the bearing is forcibly pressed into the bearing steel sleeve by means of professional press-fitting equipment by applying a large pressure, and the friction force generated between the two is relied on to realize fixation.

[0004] When the bearing needs to be overhauled, replaced or maintained, the bearing and the steel sleeve are tightly combined due to the interference fit, and when disassembling, a hammer or other tools are often used for knocking to try to loosen the bearing and take it out of the steel sleeve. The knocking method not only has a large operation difficulty, needs to consume a large amount of time and manpower, but also is easy to cause damage to the bearing and the steel sleeve, which may cause deformation or damage of the rolling elements such as balls and rollers inside the bearing, and at the same time may cause scratches, pits and other defects on the inner wall of the steel sleeve, thereby affecting the precision and running stability of the bearing and reducing the service life of the bearing. In addition, part of the bearing will be subjected to axial load, and the bearing may be detached or axially displaced.

[0005] At the same time, a large amount of heat will be generated during the rotation of the bearing. If the heat cannot be effectively dissipated in time, the working temperature of the bearing will continuously rise, and the high temperature will change the performance of the lubricating grease inside the bearing, reduce the lubricating effect and accelerate the wear of the bearing. CONTENT OF THE INVENTION

[0006] In view of the deficiencies of the prior art, the application provides a bearing and bearing steel sleeve fixing structure, which has the advantages of automaticity and solves the problems raised in the background art.

[0007] To achieve the above-mentioned purpose, the application provides the following technical scheme: a bearing and bearing steel sleeve fixing structure, comprising a base, a cover plate and a bearing arranged therebetween, the upper surface of the base and the bottom of the cover plate are both provided with an installation groove with a circular cross section, the inner walls of the two installation grooves are both fixedly connected with arc-shaped fixing pieces, the inner walls of the two arc-shaped fixing pieces are both provided with a group of integrally formed engagement ribs, the outer surface of the outer ring of the bearing is provided with a group of engagement grooves, and each engagement rib is engaged with the corresponding engagement groove. The inside of the base is provided with an arc-shaped air cavity, the arc-shaped air cavity is concentrically arranged with the mounting groove, the outer surface of the lowermost arc-shaped fixing sheet is provided with a set of integrally formed arc-shaped fins, each arc-shaped fin is fixedly embedded with the base, each arc-shaped fin extends to the inside of the arc-shaped air cavity, and one end is in close contact with the inner bottom wall of the arc-shaped air cavity, and the adjacent two arc-shaped fins form an air duct.

[0008] Further, the upper surface of the base is provided with two threaded holes, two bolts are arranged between the base and the cover plate, and the two bolts are respectively screwed with the corresponding threaded holes.

[0009] Through the above scheme, the threaded connection of the bolt and the threaded hole can quickly fix the cover plate on the base, realize the stable packaging of the bearing, facilitate disassembly, and be conducive to subsequent maintenance, replacement or maintenance operation of the bearing.

[0010] Further, a rubber gasket is arranged between each of the bolts and the cover plate.

[0011] Through the above scheme, the rubber gasket has elasticity and buffering performance, which can reduce the loosening of the bolt caused by bearing or mechanical vibration.

[0012] Further, the two side surfaces of the base are provided with a fixing lug integrally formed therewith.

[0013] Through the above scheme, the installation fixing point is provided for the whole bearing and bearing steel sleeve fixing structure, which facilitates the installation of the structure on other equipment or rack, and enhances the stability and convenience of the structure.

[0014] Further, the two ends of the arc-shaped air cavity are respectively provided with an air inlet, and the bottom of the base is provided with an air outlet groove penetrating to the middle of the arc-shaped air cavity.

[0015] Through the above scheme, a complete air flow channel is formed, external air can enter the air duct from the air inlet, flow through the arc-shaped fin and then be discharged from the air outlet, realizing the circulation of air flow, thereby effectively taking away the heat generated by the bearing, and further improving the heat dissipation efficiency.

[0016] Further, the bottom end of each of the two air inlets is provided with an axial flow fan.

[0017] Through the above scheme, the air flow can be actively powered, the flow speed of the air can be accelerated, more air can pass through the air duct, the heat dissipation effect can be enhanced, the heat generated by the bearing during operation can be discharged in time, and the bearing can be ensured to stably operate in a suitable temperature environment.

[0018] Further, a pressure sensor is arranged between the base and the cover plate, and the pressure sensor is fixedly installed with the base.

[0019] Through the above scheme, the pressure sensor is connected with the control system of the outside world, and the specific control logic is that when the pressure sensor detects that the pressure value between the cover plate and the base exceeds the preset normal range, the control system will issue an alarm signal to remind the operator to check whether the structure is loose or other abnormal conditions in time, through the setting of the pressure sensor, the connecting pressure between the cover plate and the base can be monitored, the stability and reliability of the bearing fixation are ensured, abnormal operation of the bearing caused by loose connection is avoided, and normal operation of the equipment is ensured.

[0020] Compared with the prior art, the technical scheme of the application has the following beneficial effects: The bearing and bearing steel sleeve fixing structure realizes stable connection between the bearing and the arc-shaped fixing sheet through the meshing design of the engagement ribs and the engagement grooves, is more convenient to install and disassemble compared with the traditional interference fit, does not need professional equipment or knocking tools, reduces damage to the bearing and the steel sleeve, effectively prevents the bearing from falling off or displacement under axial load, and improves the stability and reliability of fixation. Through the setting of the arc-shaped air cavity, the arc-shaped fin and the air duct, when the airflow passes through the air duct, the arc-shaped fin increases the heat dissipation area, so that the airflow fully contacts the fin, accelerates heat exchange and dissipation, effectively reduces the heat generated by the bearing rotation, avoids performance change of the lubricating grease caused by excessively high temperature, reduces bearing wear, and prolongs the service life. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a three-dimensional schematic view of the overall structure of the application Figure One ; Figure 2 is a front view of the overall structure of the application Figure 3 is a three-dimensional schematic view of the overall structure of the application Figure Two ; Figure 4 is a sectional view of the overall structure of the application Figure 5 is a base structure diagram of the application Figure 6 is a cover plate structure diagram of the application Figure 7 is an arc-shaped fin structure diagram of the application Figure 8 is a bearing structure diagram of the application Figure 9 is a sectional view of the base structure front view of the application Figure 10 is a sectional view of the base structure side view of the application

[0022] In the drawings: 1, base; 2, cover plate; 3, bearing; 4, mounting groove; 5, arc-shaped fixing piece; 6, interlocking rib; 7, interlocking groove; 8, arc-shaped air cavity; 9, arc-shaped fin; 10, threaded hole; 11, bolt; 12, rubber gasket; 13, fixing lug; 14, air inlet; 15, air outlet groove; 16, axial flow fan; 17, pressure sensor. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0024] Please refer to Figures 1-10 A bearing and bearing steel sleeve fixing structure in the embodiment includes a base 1, a cover plate 2 and a bearing 3 arranged therebetween. The upper surface of the base 1 and the bottom of the cover plate 2 are both provided with a mounting groove 4 with a circular cross section. The inner walls of the two mounting grooves 4 are both fixedly connected with arc-shaped fixing pieces 5. The inner walls of the two arc-shaped fixing pieces 5 are both provided with a set of integrally formed interlocking ribs 6. The outer surface of the outer ring of the bearing 3 is provided with a set of interlocking grooves 7. Each interlocking rib 6 is engaged with its corresponding interlocking groove 7. The engagement of the interlocking rib 6 and the interlocking groove 7 realizes the stable connection between the bearing 3 and the arc-shaped fixing piece 5. Compared with the traditional interference fit, this connection method is more convenient to install and disassemble without the need for professional press-fitting equipment or the use of knocking tools, reducing the damage to the bearing 3 and the steel sleeve. At the same time, it can effectively prevent the bearing 3 from falling off or axially displacing when subjected to axial load, improving the stability and reliability of the bearing 3 fixation. The two side surfaces of the base 1 are both provided with fixing lugs 13 integrally formed therewith, providing mounting and fixing points for the entire bearing 3 and bearing 3 steel sleeve fixing structure, facilitating the installation and fixation of the structure on other equipment or racks, and enhancing the stability of the structure and the convenience of installation.

[0025] The inner part of the base 1 is provided with an arc-shaped air cavity 8, which is concentrically arranged with the mounting groove 4. The outer surface of the lowermost arc-shaped fixing sheet 5 is provided with a set of integrally formed arc-shaped fins 9. Each arc-shaped fin 9 is fixedly embedded with the base 1. Each arc-shaped fin 9 extends to the inside of the arc-shaped air cavity 8 and is in close contact with the inner bottom wall of the arc-shaped air cavity 8 at one end. The adjacent two arc-shaped fins 9 form an air duct. The arc-shaped air cavity 8, the arc-shaped fin 9 and the air duct can increase the heat dissipation area when air flows through the air duct, so that the air flow is in full contact with the arc-shaped fin 9, thereby accelerating the exchange and dissipation of heat, effectively reducing the heat generated by the bearing 3 during rotation, avoiding changes in the performance of the lubricating grease due to excessive temperature, reducing the wear of the bearing 3, and prolonging the service life of the bearing 3.

[0026] The two ends of the arc-shaped air cavity 8 are respectively provided with an air inlet 14. The bottom of the base 1 is provided with an air outlet groove 15 penetrating to the middle part of the arc-shaped air cavity 8, forming a complete air flow channel. External air can enter the air duct from the air inlet 14 of the arc-shaped air cavity 8, flow through the arc-shaped fin 9 and then be discharged from the air outlet groove 15, realizing the circulation of air flow, thereby effectively taking away the heat generated by the bearing 3 and further improving the heat dissipation efficiency. The bottom end of each air inlet 14 is provided with an axial flow fan 16, which can actively provide power for the air flow, accelerate the flow speed of the air, make more air pass through the air duct, enhance the heat dissipation effect, and ensure that the heat generated by the bearing 3 during operation can be dissipated in time, so as to ensure that the bearing 3 can stably operate in a suitable temperature environment.

[0027] The upper surface of the base 1 is provided with two threaded holes 10. The base 1 and the cover plate 2 are provided with two bolts 11. The two bolts 11 are respectively screwed with the corresponding threaded holes 10. The threaded connection of the bolt 11 and the threaded hole 10 can quickly fix the cover plate 2 on the base 1, realize the stable packaging of the bearing 3, facilitate disassembly, and be conducive to subsequent maintenance, replacement or maintenance operation of the bearing 3. The rubber gasket 12 is provided between each bolt 11 and the cover plate 2. The rubber gasket 12 has elasticity and buffering performance, which can reduce the loosening of the bolt 11 caused by the vibration of the bearing 3 or the machine.

[0028] The base 1 and the cover plate 2 are provided with a pressure sensor 17. The pressure sensor 17 is fixedly installed with the base 1. The pressure sensor 17 is connected with the control system of the outside world. The specific control logic is that when the pressure sensor 17 detects that the pressure value between the cover plate 2 and the base 1 exceeds the preset normal range, the control system will issue an alarm signal to remind the operator to check whether there is loosening or other abnormal conditions in time. Through the setting of the pressure sensor 17, the connection pressure between the cover plate 2 and the base 1 can be monitored, the stability and reliability of the bearing 3 can be ensured, the abnormal operation of the bearing 3 caused by loosening can be avoided, and the normal operation of the equipment can be ensured.

[0029] The working principle of the above embodiment is that when the bearing 3 is installed, first, the base 1 is placed stably in a suitable working position, ensuring that the base 1 is horizontal and stable, the bearing 3 is placed in the installation groove 4 on the upper surface of the base 1, at this time the engagement groove 7 on the outer surface of the outer ring of the bearing 3 is opposite the integrally formed engagement rib 6 on the arc-shaped fixed piece 5 of the inner wall of the installation groove 4 of the base 1, the cover plate 2 is slowly placed above the base 1, the installation groove 4 at the bottom of the cover plate 2 is aligned with the bearing 3, and in the placement process, the engagement rib 6 on the arc-shaped fixed piece 5 of the inner wall of the installation groove 4 of the cover plate 2 is gradually opposite the engagement groove 7 on the outer surface of the outer ring of the bearing 3, as the cover plate 2 is pressed down, the engagement rib 6 and the engagement groove 7 are engaged with each other, compared with the traditional interference fit method, it is not necessary to use professional press-fitting equipment to apply a large pressure, and it also avoids the use of knocking tools, greatly reducing the damage to the bearing 3 and the steel sleeve, and effectively preventing the bearing 3 from falling off or axially displacing when subjected to axial load, improving the stability and reliability of the bearing 3 fixation.

[0030] Two threaded holes 10 are formed on the upper surface of the base 1, two bolts 11 are respectively inserted through the corresponding holes of the cover plate 2, and then screwed into the threaded holes 10, so that the cover plate 2 is quickly fixed on the base 1 through the threaded connection of the bolts 11 and the threaded holes 10, realizing the stable packaging of the bearing 3, heat will be generated during the rotation of the bearing 3, at this time, the external air enters the air duct from the air inlet 14 arranged at both ends of the two arc-shaped air cavities 8 under the action of natural flow or the axial flow fan 16, the axial flow fan 16 can actively provide power for the airflow to accelerate the flow speed of the air, so that more air quickly enters the air duct, the air entering the air duct flows through a group of integrally formed arc-shaped fins 9 on the outer surface of the lowermost arc-shaped fixed piece 5, the arc-shaped fins 9 extend into the arc-shaped air cavity 8 inside the base 1, and one end of the arc-shaped fins 9 is in close contact with the inner bottom wall of the arc-shaped air cavity 8, and the adjacent two arc-shaped fins 9 form an air duct, when the airflow flows through the arc-shaped fins 9, the arc-shaped fins 9 increase the heat dissipation area, so that the airflow and the fins are in full contact, thereby accelerating the exchange and dissipation of heat, and the air after heat exchange is discharged from the air outlet slot 15 penetrating to the middle of the arc-shaped air cavity 8 arranged at the bottom of the base 1.

[0031] A pressure sensor 17 is arranged between the base 1 and the cover plate 2, the pressure sensor 17 is fixedly installed on the base 1 and connected with the control system outside, and the pressure sensor 17 monitors the pressure value between the cover plate 2 and the base 1 in real time, when the pressure value between the cover plate 2 and the base 1 detected by the pressure sensor 17 exceeds the preset normal range, the control system will immediately issue an alarm signal to remind the operator to check whether there is looseness or other abnormal conditions in the structure in time.

[0032] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the enclosed claims. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the application can be varied in a multitude of ways. Such alterations, many of which will be apparent to those skilled in the art, can be based on current technology, and as such, this application should not be limited to the particular embodiments described herein, but should be understood to include all embodiments that are within the scope of the appended claims and their equivalents.

[0033] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the principles and spirits of the application, which can be limited only by the scope of the appended claims and their equivalents.

Claims

1. A bearing and bearing sleeve fixing structure, comprising a base (1), a cover plate (2), and a bearing (3) disposed between the two, characterized in that: The upper surface of the base (1) and the bottom of the cover plate (2) are provided with a circular cross-section mounting groove (4). The inner walls of the two mounting grooves (4) are fixedly connected with arc-shaped fixing pieces (5). The inner walls of the two arc-shaped fixing pieces (5) are provided with a set of integrally formed interlocking ribs (6). The outer surface of the outer ring of the bearing (3) is provided with a set of interlocking grooves (7). Each interlocking rib (6) engages with its corresponding interlocking groove (7). The base (1) has an arc-shaped air cavity (8) inside. The arc-shaped air cavity (8) is concentrically set with the mounting groove (4). The outer surface of the arc-shaped fixing piece (5) at the bottom is provided with a set of integrally formed arc-shaped fins (9). Each arc-shaped fin (9) is fixedly embedded in the base (1). Each arc-shaped fin (9) extends into the arc-shaped air cavity (8), and one end is in close contact with the inner bottom wall of the arc-shaped air cavity (8). The two adjacent arc-shaped fins (9) form an air duct.

2. The bearing and bearing sleeve fixing structure according to claim 1, characterized in that: The upper surface of the base (1) has two threaded holes (10), and two bolts (11) are provided between the base (1) and the cover plate (2). The two bolts (11) are threadedly connected to their corresponding threaded holes (10).

3. The bearing and bearing sleeve fixing structure according to claim 2, characterized in that: A rubber gasket (12) is provided between each of the bolts (11) and the cover plate (2).

4. The bearing and bearing sleeve fixing structure according to claim 1, characterized in that: The base (1) has fixed ears (13) integrally formed on both sides.

5. The bearing and bearing sleeve fixing structure according to claim 1, characterized in that: An air inlet (14) is provided at each end of the arc-shaped air cavity (8), and an air outlet groove (15) is provided at the bottom of the base (1) that extends through the middle of the arc-shaped air cavity (8).

6. The bearing and bearing sleeve fixing structure according to claim 5, characterized in that: An axial flow fan (16) is installed at the bottom of both air inlets (14).

7. The bearing and bearing sleeve fixing structure according to claim 1, characterized in that: A pressure sensor (17) is provided between the base (1) and the cover plate (2), and the pressure sensor (17) is fixedly installed with the base (1).

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