A high-strength bearing housing

Abstract

This invention discloses a high-strength bearing housing, relating to the field of bearing housing technology. It includes an isolation boss, one end of which is fixedly fitted with a corrosion-resistant protective layer made of corrosion-resistant material. Reinforcing side plates, which enclose the corrosion-resistant protective layer, are fixedly fitted at both ends of the protective layer. Fastening rods, which are securely connected to the reinforcing side plates, are fixedly fitted inside the reinforcing side plates. The advantages of this invention are: by adding an isolation boss to the surface of the bearing housing, the corrosion-resistant protective layer is supported, forming a corrosion-resistant protective structure on the outside of the bearing housing. Simultaneously, the isolation cavity supported by the isolation boss forms a second layer of protection, reducing direct contact between corrosive substances and the bearing housing. Furthermore, the reinforcing side plates form a closed protective space within the corrosion-resistant protective layer, covering and protecting the bearing housing, making it less susceptible to corrosion from complex environments and improving the overall strength of the bearing housing.

Description

Technical Field

[0001] This utility model relates to the field of bearing housing technology, and in particular to a high-strength bearing housing. Background Technology

[0002] In the field of mechanical transmission, the bearing housing is a key structural component that encloses and secures the bearing. By providing rigid support and positioning, it ensures the bearing maintains stable operation under conditions such as high-speed rotation and load impact. It is widely used in automotive engines, wind power equipment, and precision machine tools. The bearing housing must possess both high strength (tensile strength ≥ 600 MPa) and structural stability to withstand the radial and axial loads transmitted by the bearing, preventing problems such as abnormal bearing clearance and increased vibration and noise caused by deformation, which directly affect the overall operating accuracy and service life of the machine.

[0003] However, due to the complexity of the working environment, the surface of existing bearing housings is prone to moisture, dust, or the adhesion of corrosive debris, resulting in low corrosion resistance and easy rusting or corrosion by the medium. Utility Model Content

[0004] Therefore, the purpose of this utility model is to propose a high-strength bearing housing to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, one embodiment of this utility model provides a high-strength bearing housing, including a bearing seat hole for accommodating the bearing. A housing base for mounting and fixing is provided around the circumference of the bearing seat hole. A plurality of supporting isolation bosses are provided on the surface of the housing base. A corrosion-resistant protective layer made of corrosion-resistant material is fixedly installed at one end of each isolation boss. Reinforcing side plates for sealing are fixedly installed at both ends of the corrosion-resistant protective layer. A fastening tie rod for fastening is fixedly installed inside the reinforcing side plate. A sealing strip for connecting and sealing is provided at the connection between the reinforcing side plate and the corrosion-resistant protective layer. A fastening support rod made of elastic material is provided inside the sealing strip.

[0006] Preferably, either of the above embodiments has a bearing housing hole with shoulders at both ends to protect the bearing, and the housing base has a planar boss at both ends for mounting, with mounting bolt holes for mounting bolts inside the planar boss.

[0007] The above technical solution is adopted: the shoulders at both ends of the bearing housing bore fit against the end face of the bearing outer ring, restricting the axial movement of the bearing, and forming a protective barrier to prevent external dust and liquid from entering the bearing mating surface. The flat bosses at both ends of the housing base (CrMo material, heat treated) serve as the installation reference. The internal mounting bolt holes are connected to the equipment frame through high-strength bolts to ensure the overall positioning accuracy of the housing and to transfer the radial load borne by the bearing to the frame.

[0008] Preferably, in any of the above embodiments, the isolation boss is fixedly installed on the surface of the outer shell base, the size of the corrosion-resistant protective layer is larger than the size of the outer shell base, the two ends of the corrosion-resistant protective layer are provided with connecting posts that are inserted into the mounting bolt holes, and the two ends of the corrosion-resistant protective layer are provided with sealing connection grooves for fixing the sealing strip.

[0009] The above technical solution is adopted as follows: the isolation boss (integratedly cast with the outer shell base) is vertically distributed on the surface of the outer shell base, and its top is welded and fixed to the corrosion-resistant protective layer (316L stainless steel plate) to form an isolation cavity of a certain height. The air layer blocks the direct contact between the corrosive medium (such as acid and alkali mist, water vapor) and the outer shell base. The size of the protective layer is larger than the outer shell base to form a fully enclosed structure. The connecting columns at both ends are inserted into the mounting bolt holes to enhance the connection stability between the protective layer and the base. The sealing connecting groove is used to position the sealing strip to ensure the sealing of the edge of the protective layer.

[0010] Preferably, in any of the above embodiments, the reinforcing side plate is bonded to both sides of the outer shell base, the interior of the reinforcing side plate is provided with a connecting groove for fixing and fastening the tie rod, and the middle of the reinforcing side plate is provided with a through hole that matches the bearing seat hole.

[0011] The above technical solution is adopted: the reinforced side plate (Q355 steel, galvanized surface) is bonded to both sides of the housing base with epoxy resin adhesive, forming a "sandwich" structure with the base, which improves the overall bending strength of the housing. The internal connecting groove accurately accommodates the fastening tie rod, ensuring that the force axis of the tie rod is perpendicular to the side plate. The central through hole is coaxial with the bearing seat hole, avoiding interference with the installation and operation of the bearing. At the same time, it provides auxiliary support for the outer ring of the bearing and disperses local stress.

[0012] Preferably, in any of the above embodiments, the fastening rod includes a fastening sleeve for support, a fastening spring for pulling, and a fastening insert for fastening compression. The fastening sleeve is engaged inside the reinforced side plate on one side, and a fastening spring is fixedly installed inside the fastening sleeve. One end of the fastening spring is fixedly installed with a fastening insert that moves inside the fastening sleeve, and the fastening insert is engaged inside the reinforced side plate on the other side.

[0013] The above technical solution is adopted: the fastening sleeve rod (45 steel, surface hardened) is interference-fitted into the connecting groove of one side of the reinforced side plate. The internal fastening spring is pre-compressed to generate pre-tightening force, which pushes the fastening insert rod (material same as the sleeve rod) into the connecting groove (interference fit) of the other side of the reinforced side plate. Through the continuous elastic force of the spring, the two sides of the reinforced side plate are tightly attached to the shell base, which offsets the deformation of the shell under stress, ensures the rigidity of the "base-side plate" combination structure, and avoids structural fatigue caused by resonance.

[0014] Preferably, in any of the above embodiments, the sealing strip is engaged inside the corrosion-resistant protective layer, and the interior of the sealing strip has an installation groove for accommodating the fastening rubber plate.

[0015] The above technical solution is adopted: the sealing strip (made of butyl rubber) is interference-fitted into the sealing connection groove of the corrosion-resistant protective layer. Its cross-section is U-shaped, wrapping the connection edge between the protective layer and the reinforced side plate. The rubber elastic deformation fills the assembly gap, preventing corrosive media from entering the isolation cavity along the gap. The internal installation groove provides installation space for the fastening rubber plate, ensuring that the sealing strip is always under compression.

[0016] Preferably, in any of the above embodiments, the fastening rubber plate includes two supporting fixing plates and a compression rubber pad made of elastic material. The two fixing plates are respectively glued to both sides of the mounting groove, and the compression rubber pad is fixedly installed between the two fixing plates.

[0017] The above technical solution is adopted: the fixing pieces (polyoxymethylene material) are glued to both sides of the mounting groove of the sealing strip. Their surfaces are tightly attached to the inner wall of the groove, providing rigid support for the compression pad (silicone rubber). The pad is in a slightly compressed state under natural conditions. When the temperature changes cause the components to expand and contract, the elastic deformation compensates for the gap changes between the sealing strip and the protective layer and the side plate, continuously maintaining the sealing pressure and ensuring that the sealing performance does not decrease after long-term use.

[0018] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0019] 1. An isolation boss is added to the surface of the bearing housing to support the corrosion-resistant protective layer, forming a corrosion-resistant protective structure on the outside of the bearing housing. At the same time, the isolation cavity supported by the isolation boss forms a second layer of protection, reducing direct contact between corrosive substances and the bearing housing. The reinforced side plate forms a closed protective space in the corrosion-resistant protective layer to cover and protect the bearing housing, making the bearing housing less susceptible to corrosion from complex environments and improving the overall strength of the bearing housing.

[0020] 2. A sealing strip that is fastened to the corrosion-resistant protective layer is installed inside the reinforced side plate, and a fastening support rod is installed inside the sealing strip to compress and support it. The elasticity inside the fastening support rod is used to further enhance the tightness of the sealing strip and ensure the stability of the seal.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure according to an embodiment of the present utility model;

[0024] Figure 2 This is a partial front view structural schematic diagram according to an embodiment of the present utility model;

[0025] Figure 3 This is a structural schematic diagram of the reinforced side plate according to an embodiment of the present utility model;

[0026] Figure 4 This is a cross-sectional structural diagram of the fastening support rod according to an embodiment of the present utility model;

[0027] Figure 5 This is a cross-sectional structural diagram of the corrosion-resistant protective layer according to an embodiment of the present invention;

[0028] Among them: 1-bearing seat hole, 2-outer shell base, 3-isolation boss, 4-corrosion resistant protective layer, 5-reinforced side plate, 6-fastening tie rod, 61-fastening sleeve rod, 62-fastening spring, 63-fastening insert rod, 7-sealing strip, 8-fastening support rod, 81-fixing plate, 82-compression rubber pad, 9-connecting column, 10-through hole. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0030] like Figure 1-5As shown, a high-strength bearing housing according to an embodiment of the present invention includes a bearing seat hole 1 for accommodating the bearing, a housing base 2 for mounting and fixing is provided around the circumference of the bearing seat hole 1, a plurality of supporting isolation bosses 3 are provided on the surface of the housing base 2, a corrosion-resistant protective layer 4 made of corrosion-resistant material is fixedly installed at one end of the isolation bosses 3, a reinforcing side plate 5 for sealing is fixedly installed at both ends of the corrosion-resistant protective layer 4, a fastening tie rod 6 for fastening is fixedly installed inside the reinforcing side plate 5, a sealing strip 7 for connecting and sealing is provided at the connection between the reinforcing side plate 5 and the corrosion-resistant protective layer 4, and a fastening support rod 8 made of elastic material is provided inside the sealing strip 7.

[0031] Preferably, the bearing housing hole 1 has shoulders at both ends to protect the bearing, and the housing base 2 has flat bosses at both ends for mounting. The flat bosses have mounting bolt holes for mounting bolts inside.

[0032] The above technical solution is adopted: the shoulders at both ends of the bearing housing hole 1 fit with the end face of the bearing outer ring, which restricts the axial movement of the bearing and forms a protective barrier to prevent external dust and liquid from entering the bearing mating surface. The flat bosses at both ends of the housing base 2 (42CrMo material, heat treated) serve as the installation reference. The internal mounting bolt holes are connected to the equipment frame through high-strength bolts (8.8 grade) to ensure the overall positioning accuracy of the housing and to transfer the radial load borne by the bearing to the frame.

[0033] Preferably, in any of the above schemes, the isolation boss 3 is fixedly installed on the surface of the outer shell base 2, the size of the corrosion-resistant protective layer 4 is larger than the size of the outer shell base 2, the two ends of the corrosion-resistant protective layer 4 are provided with connecting posts 9 that are inserted into the mounting bolt holes, and the two ends of the corrosion-resistant protective layer 4 are provided with sealing connection grooves for fixing the sealing strip 7.

[0034] The above technical solution is adopted: the isolation boss 3 (integratedly cast with the outer shell base 2) is vertically distributed on the surface of the outer shell base, and its top is welded and fixed to the corrosion-resistant protective layer 4 (316L stainless steel plate) to form an isolation cavity of a certain height. The air layer blocks the direct contact between the corrosive medium (such as acid and alkali mist, water vapor) and the outer shell base. The size of the protective layer is larger than the outer shell base to form a fully enclosed structure. The connecting columns 9 at both ends are inserted into the mounting bolt holes to enhance the connection stability between the protective layer and the base. The sealing connecting groove is used to position the sealing strip 7 to ensure the sealing of the edge of the protective layer.

[0035] Preferably, in any of the above solutions, the reinforcing side plate 5 is bonded to both sides of the outer shell base 2, the interior of the reinforcing side plate 5 is provided with a connecting groove for fixing and fastening the tie rod 6, and the middle of the reinforcing side plate 5 is provided with a through hole 10 that matches the bearing seat hole 1.

[0036] The above technical solution is adopted: the reinforced side plate 5 (Q355 steel, galvanized surface) is bonded to both sides of the housing base 2 with epoxy resin adhesive, forming a "sandwich" structure with the base, which improves the overall bending strength of the housing. The internal connecting groove accurately accommodates the fastening tie rod 6, ensuring that the force axis of the tie rod is perpendicular to the side plate. The central through hole 10 is coaxial with the bearing seat hole 1, avoiding interference with the installation and operation of the bearing, while providing auxiliary support for the outer ring of the bearing and dispersing local stress.

[0037] Preferably, in any of the above embodiments, the fastening rod 6 includes a fastening sleeve 61 for support, a fastening spring 62 for pulling, and a fastening insert 63 for fastening compression. The fastening sleeve 61 is engaged inside the reinforcing side plate 5 on one side. The fastening spring 62 is fixedly installed inside the fastening sleeve 61. One end of the fastening spring 62 is fixedly installed with the fastening insert 63, which moves inside the fastening sleeve 61. The fastening insert 63 is engaged inside the reinforcing side plate 5 on the other side.

[0038] The above technical solution is adopted: the fastening sleeve rod 61 (45 steel, surface hardened) is interference-fitted into the connecting groove of one side of the reinforced side plate 5. The internal fastening spring 62 is pre-compressed to generate a pre-tightening force, which pushes the fastening insert rod 63 (material same as the sleeve rod) into the connecting groove of the other side of the reinforced side plate (interference fit). Through the continuous elastic force of the spring, the two sides of the reinforced side plate 5 are tightly attached to the outer shell base 2, which offsets the deformation of the outer shell under stress, ensures the rigidity of the "base-side plate" combination structure, and avoids structural fatigue caused by resonance.

[0039] Preferably, in any of the above embodiments, the sealing strip 7 is engaged inside the corrosion-resistant protective layer 4, and the sealing strip 7 has an installation groove for accommodating the fastening rubber plate 8.

[0040] The above technical solution is adopted: the sealing strip 7 (butyl rubber material) is interference-fitted into the sealing connection groove of the corrosion-resistant protective layer 4. Its cross-section is U-shaped, wrapping the connection edge between the protective layer and the reinforced side plate 5. The assembly gap is filled by the elastic deformation of the rubber to prevent corrosive media from entering the isolation cavity along the gap. The internal installation groove provides installation space for the fastening rubber plate 8 to ensure that the sealing strip is always under compression.

[0041] Preferably, the fastening plate 8 includes two supporting fixing plates 81 and a compression pad 82 made of elastic material. The two fixing plates 81 are respectively glued to both sides of the mounting groove, and the compression pad 82 is fixedly installed between the two fixing plates 81.

[0042] The above technical solution is adopted: the fixing piece 81 (polyoxymethylene material) is glued to both sides of the mounting groove of the sealing strip 7, and its surface is tightly attached to the inner wall of the groove, providing rigid support for the compression pad 82 (silicone rubber). The pad is in a slightly compressed state under natural conditions. When the temperature changes cause the component to expand and contract, the elastic deformation compensates for the gap changes between the sealing strip and the protective layer and the side plate, continuously maintaining the sealing pressure and ensuring that the sealing performance does not decrease after long-term use.

[0043] The working principle of this high-strength bearing housing is as follows:

[0044] The bearing is installed in the bearing housing hole 1, and its two ends of the shaft shoulder form axial limit and protection for the bearing. The housing base 2 is fixed to the equipment frame through the mounting bolt holes of the flat boss, and the load borne by the bearing is transferred to the frame. The isolation boss 3 on the surface of the housing base 2 supports the corrosion-resistant protective layer 4, forming an isolation cavity to reduce contact with corrosive media. The connecting columns 9 at both ends of the protective layer are inserted into the mounting bolt holes to strengthen the fixation. At the same time, its size covers the housing base to form full coverage protection. The reinforcing side plate 5 is attached to both sides of the housing base. The pre-tightening connection is achieved by the fastening sleeve 61, fastening spring 62 and fastening insert 63 of the fastening tie rod 6. The spring force makes the side plate fit tightly against the base, improving the overall structural strength. The central through hole 10 cooperates with the bearing housing hole 1 to avoid interference. The connection between the reinforcing side plate and the corrosion-resistant protective layer is sealed by the sealing strip 7. The fastening rubber plate 8 in the sealing strip uses the fixing piece 81 to support the compression rubber gasket 82. The elastic deformation of the rubber gasket compensates for the gap and enhances the sealing stability. All the structures work together to form a high-strength and corrosion-resistant bearing protection system.

[0045] Compared with the prior art, the present invention has the following advantages:

[0046] 1. An isolation boss 3 is added to the surface of the bearing housing. The isolation boss 3 supports the corrosion-resistant protective layer 4, so that the corrosion-resistant protective layer 4 forms a corrosion-resistant protective structure on the outside of the bearing housing. At the same time, the isolation cavity supported by the isolation boss 3 forms a second layer of protection, reducing the direct contact between corrosive substances and the bearing housing. The reinforced side plate 5 forms a closed protective space in the corrosion-resistant protective layer 4 to cover and protect the bearing housing, making the bearing housing less susceptible to corrosion by complex environments and improving the overall strength of the bearing housing.

[0047] 2. A sealing strip 7 that is fastened to the corrosion-resistant protective layer 4 is installed inside the reinforced side plate 5, and a fastening support rod 8 that is squeezed and supported inside the sealing strip 7 is installed inside the sealing strip 7. The elasticity inside the fastening support rod 8 is used to further enhance the tightness of the sealing strip 7 and ensure the stability of the seal.

Claims

1. A high-strength bearing housing, comprising a bearing seat hole (1) for accommodating a bearing, wherein a housing base (2) for mounting and fixing is provided around the circumference of the bearing seat hole (1), characterized in that: The surface of the outer shell base (2) is provided with a number of supporting isolation bosses (3). One end of the isolation boss (3) is fixedly installed with a corrosion-resistant protective layer (4) made of corrosion-resistant material. Both ends of the corrosion-resistant protective layer (4) are fixedly installed with reinforcing side plates (5) to seal it. The inside of the reinforcing side plate (5) is fixedly installed with a fastening rod (6) to fasten it. The connection between the reinforcing side plate (5) and the corrosion-resistant protective layer (4) is provided with a sealing strip (7) to seal it. The inside of the sealing strip (7) is provided with a fastening rubber plate (8) to support and compress it.

2. The high-strength bearing housing as described in claim 1, characterized in that: The bearing seat hole (1) has shoulders at both ends to protect the bearing, and the outer casing base (2) has planar bosses at both ends for installation. The planar bosses have mounting bolt holes for mounting bolts inside.

3. A high-strength bearing housing as described in claim 2, characterized in that: The isolation boss (3) is fixedly installed on the surface of the outer shell base (2). The size of the corrosion-resistant protective layer (4) is larger than the size of the outer shell base (2). The two ends of the corrosion-resistant protective layer (4) are provided with connecting posts (9) that are inserted into the mounting bolt holes. The two ends of the corrosion-resistant protective layer (4) are provided with sealing connection grooves for fixing sealing strips (7).

4. A high-strength bearing housing as described in claim 3, characterized in that: The reinforced side plate (5) is bonded to both sides of the outer shell base (2). The interior of the reinforced side plate (5) is provided with a connecting groove for fixing and fastening the tie rod (6). The middle part of the reinforced side plate (5) is provided with a through hole (10) that matches the bearing seat hole (1).

5. A high-strength bearing housing as described in claim 4, characterized in that: The fastening rod (6) includes a fastening sleeve (61) for support, a fastening spring (62) for pulling, and a fastening insert (63) for fastening compression. The fastening sleeve (61) is engaged inside one side of the reinforced side plate (5). The fastening spring (62) is fixedly installed inside the fastening sleeve (61). One end of the fastening spring (62) is fixedly installed with a fastening insert (63) that moves inside the fastening sleeve (61). The fastening insert (63) is engaged inside the other side of the reinforced side plate (5).

6. A high-strength bearing housing as described in claim 5, characterized in that: The sealing strip (7) is engaged inside the corrosion-resistant protective layer (4), and the inside of the sealing strip (7) is provided with an installation slot for accommodating the fastening rubber plate (8).

7. A high-strength bearing housing as described in claim 6, characterized in that: The fastening plate (8) includes two supporting fixing plates (81) and a compression pad (82) made of elastic material. The two fixing plates (81) are respectively glued to both sides of the mounting groove, and the compression pad (82) is fixedly installed between the two fixing plates (81).

Images