Novel roller bearing seat

Abstract

The utility model relates to a novel roller bearing seat which comprises a bearing upper cover, a base and fastening bolts, the bearing upper cover and the base are connected through the fastening bolts, a shaft body is arranged between the bearing upper cover and the base in a penetrating mode, sealing structures are arranged among the shaft body, the bearing upper cover and the base, and the fastening bolts comprise the first fastening bolt and the second fastening bolt. An included angle is formed between the axis of the first fastening bolt and the vertical line. The bolt has the advantages that a traditional stress mode is changed, when the bolt bears external force, the external force can be decomposed into a composite form of shear force and tensile force, the bolt is stressed more evenly, damage caused by too large single stress is avoided, and the bearing capacity is remarkably improved.

Description

Technical Field

[0001] This application relates to the technical field of belt conveyors, and in particular to a novel roller bearing housing. Background Technology

[0002] In today's industrial development, belt conveyors, with their efficient and continuous conveying characteristics, are widely used in many industrial fields such as mining, metallurgy, building materials, chemicals, power, and food processing. As the core transmission component of a belt conveyor, the operating condition of the roller directly determines the stability and safety of the entire conveyor system. The bearing housing, as a key support structure for the roller, has a significant impact on its performance and lifespan.

[0003] Traditional roller bearing housings have end caps horizontally mounted on the housing body, bolted to the base. Tightening the bolts generates a reliable preload, firmly securing the end cap. In conventional industrial production environments, this structural design and material selection adequately met the operational requirements of belt conveyors. However, with the rapid advancement of modern industrial production towards high-capacity and high-speed conveying, the inherent limitations of traditional bearing housings are gradually becoming apparent when facing increasingly complex and demanding operating conditions.

[0004] In related technologies, bearing housing fastening bolts are generally installed horizontally or vertically. Under high loads and complex operating conditions, horizontally installed bolts are subjected to pure shear force, and the stress on the bolts is concentrated on both sides of the cross-section, making them prone to shearing. Vertically installed bolts are subjected to pure tensile force along the axial direction, often resulting in elongation or even breakage. In some high-intensity operations, belt conveyor failures caused by bearing housing load problems account for a relatively high proportion, seriously affecting the continuity of production. Utility Model Content

[0005] In view of the shortcomings of the existing technology, one of the objectives of this utility model is to provide a new type of roller bearing housing.

[0006] This application provides a novel roller bearing housing, which adopts the following technical solution:

[0007] A novel roller bearing housing includes a bearing cover, a base, and fastening bolts. The bearing cover and the base are connected by the fastening bolts. A shaft passes through the bearing cover and the base. A sealing structure is provided between the shaft, the bearing cover, and the base. The fastening bolts include a first fastening bolt, the axis of which forms an angle with a vertical line.

[0008] By adopting the above technical solution, the axis of the first fastening bolt forms an angle with the vertical line, which changes the traditional force mode. When the bolt is subjected to external force, it can decompose the external force into a composite form of shear force and tensile force, making the bolt more evenly stressed, avoiding damage due to excessive single stress, significantly improving the load-bearing capacity, ensuring stable operation under high load and complex working conditions, and reducing the risk of failure.

[0009] Preferably, the sealing structure includes two inner seals and two outer seals. The two inner seals are located on both sides of the bearing and are assembled on the bearing cover and base. The two outer seals are respectively installed on the side of the two inner seals away from the bearing. The outer seals are sleeved on the shaft body. An annular sealing groove is provided at the position where the outer seals abut against the shaft body, and an O-ring is provided in the annular sealing groove.

[0010] By adopting the above technical solution, a multi-layer sealing structure was constructed, enhancing the sealing performance of the bearing housing. The inner and outer seals work together to effectively prevent impurities from entering the bearing, thereby extending the bearing's service life. Simultaneously, the O-ring seal within the annular sealing groove further improves the sealing tightness, ensuring the normal operation of the equipment.

[0011] Preferably, the inner seal is connected to a second mounting block, and the fastening bolt further includes a second fastening bolt, which passes through the second mounting block and the base, and the axis of the second fastening bolt forms an angle with the vertical line.

[0012] By adopting the above technical solution, a second fastening bolt is added, which avoids stress concentration on a certain bolt or a certain connection part. Through this double fastening method, when the bearing housing is subjected to external force, the first fastening bolt and the second fastening bolt can jointly bear the load, which greatly improves the connection strength of the bearing housing and reduces the risk of structural damage caused by stress concentration.

[0013] Preferably, the angle between the axis of the fastening bolt and the vertical line is 15-60°.

[0014] By adopting the above technical solutions, the 15-60° inclination angle reduces the shear force, and at the same time, the tensile force on the bolt is also relatively reduced. This avoids the bolt being damaged due to excessive shear or tensile force, reduces the risk of shear breakage caused by shear overload, and reduces the risk of fracture caused by tensile stress concentration. Ultimately, it improves the connection strength of the bearing housing and the operational reliability of the belt conveyor.

[0015] Preferably, an expansion ring is provided between the shaft body and the inner seal and the outer seal. The expansion ring abuts against the shaft body, and an annular sealing groove is also provided on the side of the expansion ring near the shaft body. An O-ring is also provided in the annular sealing groove of the expansion ring.

[0016] By adopting the above technical solution, the expansion ring can be adaptively adjusted to a certain extent according to the actual size of the shaft, ensuring that the sealing structure fits tightly with the shaft. The fit of the O-ring seal in the annular sealing groove of the expansion ring further enhances the sealing performance of this local area, effectively preventing lubricating oil leakage and impurity intrusion, and improving the overall sealing effect and stability of the bearing housing.

[0017] Preferably, the inner seal forms a chamber at the end near the expansion ring, and a lip-shaped sealing ring is provided in the chamber.

[0018] By adopting the above technical solution, the lip seal can effectively block the lubricating medium inside the bearing housing, preventing leakage. At the same time, the lip seal's position close to the shaft makes the sealing effect more direct and efficient, further improving the sealing reliability of the bearing housing.

[0019] Preferably, the inner sealing element has an oil injection hole at the expansion ring, and an oil cavity is provided between the expansion ring, the inner sealing element and the lip seal ring, and the oil injection hole at the expansion ring is connected to the oil cavity.

[0020] By adopting the above technical solutions, the frictional loss between the rotating shaft and the seal is effectively reduced, the risk of seal failure caused by dry friction is reduced, and the lubricating film formed in the oil cavity can buffer mechanical vibration and carry away heat, thereby improving the reliability of the sealing system under high-speed or high-temperature conditions.

[0021] Preferably, the inner seal has two annular grooves at one end near the shaft, and the outer seal has two annular protrusions on the side near the inner seal. The annular grooves and the annular protrusions engage to form a labyrinth seal structure. The inner seal has an oil injection hole in the labyrinth, which connects to the gap between the inner seal and the outer seal.

[0022] By adopting the above technical solution, the oil injection hole at the labyrinth ensures timely and sufficient lubrication of the inner and outer seals, reducing the coefficient of friction between components, minimizing wear, and extending the service life of the equipment. Simultaneously, the oil injection design facilitates maintenance during equipment operation, improving the maintainability of the equipment.

[0023] Preferably, the bearing cover has an oil injection hole for the bearing, the oil injection hole for the bearing is connected to the bearing, and the inner seal has an oil drain hole near the base.

[0024] By adopting the above technical solution, the oil injection hole at the bearing can ensure lubrication at the bearing. When it is necessary to thoroughly clean the inside of the seal or replace the lubricating oil, the old oil and impurities are discharged from the oil drain hole by the pressure of the oil injection, so as to achieve the purpose of oil drainage and cleaning.

[0025] Preferably, the top of the inner seal is provided with a temperature measuring vibration hole, and a temperature sensor and a vibration sensor are installed in the temperature measuring vibration hole.

[0026] By adopting the above technical solutions, temperature and vibration sensors can monitor the operating status of the bearing housing in real time. The temperature sensor can promptly detect changes in the internal temperature of the bearing housing; if the temperature rises abnormally, it can provide early warning of potential equipment malfunctions. The vibration sensor can capture vibrations during equipment operation; by analyzing the vibration data, it can determine whether there are problems such as loose components or imbalances, which helps to achieve preventative maintenance, ensure stable equipment operation, and reduce the failure rate.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. By tilting the assembly, the axis of the fastening bolt forms an angle with the vertical line, which changes the traditional force mode. When the bolt is subjected to external force, it can decompose the external force into a composite form of shear force and tensile force, making the bolt more evenly stressed, avoiding damage due to excessive single stress, significantly improving the load-bearing capacity, ensuring stable operation under high load and complex working conditions, and reducing the risk of failure.

[0029] 2. By constructing a multi-layer sealing structure, the sealing performance of the bearing housing is enhanced. The inner and outer seals work together to effectively prevent impurities from entering the bearing, thereby extending the bearing's service life. At the same time, the O-ring seal in the annular sealing groove further improves the tightness of the seal, ensuring the normal operation of the equipment.

[0030] 3. By adding a second fastening bolt, stress concentration is avoided in a single bolt or connection point. Through this double fastening method, when the bearing housing is subjected to external forces, the first and second fastening bolts can share the load, greatly improving the connection strength of the bearing housing and reducing the risk of structural damage caused by stress concentration. Attached Figure Description

[0031] Figure 1 This is the front view of this utility model;

[0032] Figure 2 For along Figure 1 Sectional view of line AA in the middle;

[0033] Figure 3 for Figure 2 Enlarged view of section C;

[0034] Figure 4 For along Figure 1 Sectional view of the middle BB line;

[0035] Figure 5 This is a top view of the present invention.

[0036] Reference numerals: 00, shaft; 01, bearing; 1, bearing cover; 2, base; 3, fastening bolt; 31, first fastening bolt; 32, second fastening bolt; 4, first mounting block; 5, inner seal; 6, outer seal; 7, set screw; 8, annular sealing groove; 9, O-ring seal; 10, second mounting block; 11, expansion ring; 12, oil cavity; 13, lip seal; 14, oil injection hole at the expansion ring; 15, annular groove; 16, annular protrusion; 17, oil injection hole at the labyrinth; 18, oil injection hole at the bearing; 19, oil drain hole; 20, temperature measurement vibration hole. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail.

[0038] This application discloses a novel roller bearing housing.

[0039] Reference Figure 1 A novel roller bearing housing includes a bearing cover 1, a base 2, and multiple fastening bolts 3. The base 2 is mounted on a belt conveyor frame. The bearing cover 1 and the base 2 are assembled via the fastening bolts 3. After the bearing cover 1 and the base 2 are connected, they form an internal annular structure. The annular structure inside the bearing cover 1 and the base 2 is nested within the outer ring of the bearing. The bearing cover 1 and the bearing 01 are sealed together. A sealing structure is provided between the shaft, the bearing cover, and the base. The bearing cover 1 is a symmetrical structure, and its axis of symmetry forms an angle with a vertical line. The axis of the fastening bolts 3 is parallel to the axis of symmetry of the bearing cover 1, that is, the fastening bolts 3 are installed in an inclined position. This inclined installation method of the fastening bolts 3 changes the traditional vertical or horizontal force distribution mode of the fastening bolts 3, making the force on the fastening bolts 3 more balanced, avoiding damage due to single shear or tensile forces, and enhancing structural stability.

[0040] The bearing cover 1 has its axis of symmetry forming an angle with the vertical line. This transforms the single shear or tensile force borne by the bolt during traditional vertical or horizontal installation into a more balanced composite force mode. When the angle is less than 15°, the bolt still primarily bears shear force; when the angle is greater than 60°, the axial tensile force is too high. In this novel roller bearing housing disclosed in this embodiment, the axis of symmetry of the bearing cover 1 forms a 30° angle with the vertical line, enabling a more balanced composite of shear and tensile forces. The 30° angle reduces both shear and tensile forces, preventing the bolt from being damaged by excessive shear or tensile forces, reducing the risk of shear breakage due to shear overload, and reducing the risk of fracture caused by tensile stress concentration. Ultimately, this improves the connection strength of the bearing housing and the operational reliability of the belt conveyor.

[0041] The bearing cover 1 and the base 2 are connected by a first mounting block 4. The first mounting block 4 is located on the outer arc surface of the bearing cover 1. The fastening bolt 3 includes a first fastening bolt 31. The first fastening bolt 31 passes through the first mounting block 4 and is screwed into the interior of the base 2. The axis of the first fastening bolt 31 makes an angle of 30° with the vertical line to convert excessive shear force or tensile force into a balanced composite force, disperse stress and enhance structural stability.

[0042] Reference Figure 2 This embodiment discloses a novel roller bearing housing, which further includes two inner seals 5 and two outer seals 6. The two inner seals 5 are located on both sides of the bearing and are assembled with the bearing cover 1 and the base 2. The two outer seals 6 are respectively installed on the two inner seals 5. The inner seals 5 have a cylindrical structure, and the outer seals 6 have an annular structure. One end of the inner seal 5 is snapped into the bearing cover 1 and fixed with bolts, while the other end is snapped into the outer seal 6. The end of the outer seal 6 away from the inner seal 5 is movably sleeved on the shaft body 00. A set screw 7 is provided on one side of the outer seal 6 sleeved on the shaft body 00. By tightening the set screw 7, the outer seal 6 can be fixed to the outermost side of the entire sealing structure, ensuring that the entire sealing structure remains stable during equipment operation and achieving efficient sealing. When the shaft body 00 rotates, the outer seal 6 and the inner ring of the bearing 01 rotate synchronously with the shaft body 00, while the inner seals 5, the bearing cover 1, and the base 2 remain stationary.

[0043] Reference Figure 2 and Figure 4 An oil injection hole 18 is provided through the top of the bearing cover 1, which is directly connected to the bearing 01. The oil ensures that the rolling elements and raceways inside the bearing 01 can maintain good lubrication during operation. An oil drain hole 19 is provided near the base 2 of one of the inner seals 5. When it is necessary to thoroughly clean the inside of the seal or replace the lubricating oil, the old oil and impurities are discharged from the oil drain hole 19 by the pressure of the oil injection, so as to achieve the purpose of oil drainage and cleaning.

[0044] Reference Figure 3 The inner seal 5 has two annular grooves 15 at one end near the shaft 00, and the outer seal 6 has two annular protrusions 16 on the side near the inner seal 5. The inner seal 5 and the outer seal 6 are precisely engaged by the annular grooves 15 and the annular protrusions 16 to form a labyrinth seal structure. The inner seal 5 has an oil injection hole 17 in the labyrinth, which connects to the gap between the inner seal 5 and the outer seal 6. Oil is injected through the oil injection hole 17, which forms an oil film in this gap, providing lubrication for the relative movement between the inner seal 5 and the outer seal 6.

[0045] An expansion ring 11 is provided between the shaft body 00 and the inner seal 5 and the outer seal ring. The side of the expansion ring 11 away from the shaft body 00 abuts against the inner seal 5, and the side away from the bearing 01 abuts against the outer seal 6. The expansion ring 11, combined with the labyrinth structure of the inner seal 5 and the outer seal 6, increases the tortuous path of the labyrinth structure, which significantly improves the stability and leakage prevention of the sealing system.

[0046] The inner seal 5 forms a chamber near the expansion ring 11. A lip seal 13 is provided in the chamber. The lip seal 13 has a U-shaped cross section and the opening of the lip seal 13 faces away from the bearing 01. The lip seal 13 and the expansion ring 11 cooperate closely. The tight fit of the lip seal 13 further improves the sealing performance under pressure, prevents media leakage, and also prevents external impurities from entering.

[0047] The expansion ring 11, the inner seal 5, and the lip seal 13 together form an oil cavity 12. The oil cavity 12 plays a dual role in the sealing system, serving as a buffer and preventing impurities. An oil injection hole 14 for the expansion ring is provided on the inner seal 5, connecting to the oil cavity 12. Injecting oil through this hole ensures that the oil cavity 12 always maintains a suitable amount of lubricating oil, utilizing the fluidity and buffering properties of the oil to lubricate the relative movement between the expansion ring 11 and surrounding components.

[0048] An annular sealing groove 8 is provided at the position where the outer seal 6 and the expansion ring 11 abut against the shaft 00. An O-ring 9 is placed in the annular sealing groove 8. Due to its expandable or contractible properties, the O-ring 9 will tightly fit against the wall of the annular sealing groove 8 of the outer seal 6 and the expansion ring 11, as well as the surface of the shaft 00, when subjected to compressive force. A bolt hole is provided on the side of the outer seal 6 away from the shaft. Screws are installed in the bolt holes. By tightening the screws, the outer seal 6 can be fixed to the outermost side of the entire sealing structure, ensuring that the entire sealing structure remains stable during equipment operation and achieving efficient sealing.

[0049] Reference Figure 1The inner seal 5 is provided with a second mounting block 10, which is located on the plane side of the bearing cover 1. The fastening bolt 3 also includes a second fastening bolt 32, which passes through the second mounting block 10 and is screwed into the base 2. The axis of the second fastening bolt 32 makes an angle of 30° with the vertical line to convert excessive shear force or tensile force into a balanced composite force. The positioning support of the second mounting block 10 and the base 2 is used to disperse stress and improve the connection strength of the bearing seat. Together with the first fastening bolt 31 and the first mounting block 4, the stability of the sealing structure and the reliability of equipment operation are ensured.

[0050] Reference Figure 5 One of the inner seals 5 has a temperature measurement vibration hole 20 on its top. A temperature sensor and a vibration sensor are installed inside the temperature measurement vibration hole 20. The temperature sensor measures the temperature inside the bearing housing, and the vibration sensor senses the vibration of the bearing housing 01. Operators can determine whether the equipment is operating normally by understanding its temperature status or analyzing vibration data, preventing equipment failures caused by excessive temperature, and taking preventative maintenance measures to avoid escalation of the failure and ensure stable equipment operation.

[0051] The implementation principle of this application embodiment is as follows: During the assembly process of the novel roller bearing housing, the base 2 is first accurately installed on the belt conveyor frame, and then the bearing 01 is installed, ensuring that the bearing 01 is installed in place and rotates flexibly. Subsequently, the inner seals 5 located on both sides of the bearing 01 are installed, and the expansion ring 11 and lip seal 13 are installed at the same time. The expansion ring 11 is fixed with the O-ring seal 9. After the inner seals are installed, the outer seal 6 and the O-ring seal are installed on the shaft and pushed to the inner seal 5, and fixed with screws. After completing the above steps, multiple fastening bolts 3 are assembled into the mounting block at a 30° angle. Finally, the grease nipple is connected to ensure good sealing at each connection point.

[0052] During operation of the new roller bearing housing, the roller drives the bearing 01 to rotate as the belt conveyor runs. The main structure of the bearing housing stably supports the roller, and the fastening bolts 3 are assembled into the mounting block at a 30° angle, effectively bearing various forces from the roller. The sealing structure composed of the inner seal 5 and the outer seal 6 initially blocks impurities, and the lip seal ring 13 stabilizes the position of the inner seal 5 and the expansion ring 11, with the expansion ring 11 tightly fitting the shaft surface. Oil is injected into the bearing, labyrinth, and expansion ring to ensure sufficient lubrication of all parts, reduce wear, and maintain the stable operation of the entire bearing housing device. Operators can interpret the equipment temperature status presented by the data acquisition and analysis system through the temperature sensor and vibration sensor installed in the temperature measurement vibration port 20, and conduct in-depth analysis of the vibration data to accurately determine whether the equipment is in normal operating condition.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A novel roller bearing housing, comprising a bearing cover (1), a base (2), and fastening bolts (3), wherein the bearing cover (1) and the base (2) are connected by fastening bolts (3), a shaft (00) passes through the bearing cover (1) and the base (2), and a sealing structure is provided between the shaft (00), the bearing cover (1), and the base (2), characterized in that: The fastening bolt (3) includes a first fastening bolt (31), the axis of which forms an angle with the vertical line.

2. The novel roller bearing housing according to claim 1, characterized in that, The sealing structure includes two inner seals (5) and two outer seals (6). The two inner seals (5) are located on both sides of the bearing (01) and are assembled on the bearing cover (1) and the base (2). The two outer seals (6) are respectively installed on the side of the two inner seals (5) away from the bearing (01). The outer seals (6) are sleeved on the shaft (00). An annular sealing groove (8) is provided at the position where the outer seals (6) abut against the shaft (00). An O-ring (9) is provided in the annular sealing groove (8).

3. A novel roller bearing housing according to claim 2, characterized in that, The inner seal (5) is connected to the second mounting block (10), and the fastening bolt (3) also includes a second fastening bolt (32). The second fastening bolt (32) passes through the second mounting block (10) and the base (2). The axis of the second fastening bolt (32) forms an angle with the vertical line.

4. A novel roller bearing housing according to claim 3, characterized in that, The angle between the axis of the fastening bolt (3) and the vertical line is 15-60°.

5. A novel roller bearing housing according to claim 2, characterized in that, An expansion ring (11) is provided between the inner seal (5) and the outer seal. The expansion ring (11) abuts against the shaft (00). An annular sealing groove (8) is also provided on the side of the expansion ring (11) near the shaft (00). An O-ring (9) is also provided in the annular sealing groove (8) of the expansion ring (11).

6. A novel roller bearing housing according to claim 5, characterized in that, The inner seal (5) forms a chamber at one end near the expansion ring (11), and a lip seal (13) is provided in the chamber.

7. A novel roller bearing housing according to claim 6, characterized in that, The inner sealing element (5) has an oil injection hole (14) at the expansion ring, and an oil cavity (12) is provided between the expansion ring (11), the inner sealing element (5) and the lip seal (13), and the oil injection hole (14) at the expansion ring is connected to the oil cavity (12).

8. A novel roller bearing housing according to claim 2, characterized in that, The inner seal (5) has two annular grooves (15) at one end near the shaft (00), and the outer seal (6) has two annular protrusions (16) on one side near the inner seal (5). The annular grooves (15) and the annular protrusions (16) engage to form a labyrinth seal structure. The inner seal (5) has an oil injection hole (17) at the labyrinth, which connects to the gap between the inner seal (5) and the outer seal (6).

9. A novel roller bearing housing according to claim 2, characterized in that, The bearing cover (1) has an oil injection hole (18) for the bearing, which is connected to the bearing (01). The inner seal (5) has an oil drain hole (19) near the base (2).

10. A novel roller bearing housing according to claim 2, characterized in that, The inner seal (5) has a temperature measurement vibration hole (20) on its top, and a temperature sensor and a vibration sensor are installed in the temperature measurement vibration hole (20).

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