A multifunctional bearing, bearing housing, and assembly method thereof

Abstract

This invention relates to the fields of bearings and assembly technology in metallurgy, continuous casting, and roller conveyors, and particularly to a multifunctional bearing and bearing housing for continuous casting machine rollers, and its assembly method. It includes an inner ring, an outer ring, a cage, rollers, a bearing housing, and an end cover. It also includes a bellows seal I, a bellows seal II, a dynamic seal stator I, a dynamic seal stator II, and two dynamic seals. The dynamic seal stator I is installed at one end of the outer wall of the inner ring, and is installed inside the dynamic seal stator I. The dynamic seal stator II is installed at the other end of the outer wall of the inner ring, and is installed inside the dynamic seal stator II. The large end of the bellows seal I is connected to the outer ring, and the small end is connected to the dynamic seal stator I. The large end of the bellows seal II is connected to the outer ring, and the small end is connected to the dynamic seal stator II. The end cover and bearing housing are provided with corresponding cooling water holes. It has a dynamic seal water supply function and a flexible self-sealing function; the process is simplified, the cost is low, and the operation is reliable, reducing or eliminating contamination from bearing grease.

Description

Technical Field

[0001] This invention relates to the fields of bearings and assembly technology in metallurgy, continuous casting, and roller conveyors, and particularly to a multifunctional bearing and bearing housing for continuous casting machine rollers and its assembly method. Background Technology

[0002] The rollers and their supporting bearings of the continuous casting machine directly bear the heat conduction and radiation from the high-temperature cast billet. The rollers and their supporting bearings in the secondary cooling chamber are also subject to the effects of dust-laden high-temperature steam and water mist. Currently, the traditional approach is to cool the inside of the rollers with water, use centralized lubrication for the bearings, and connect external cooling water to the inside of the rollers through a rotary joint for cooling.

[0003] Due to the extremely harsh working environment, rotary joints are prone to damage and have a short service life. The harsh working conditions and the limited lifespan of the rotary joint prevent cooling water from entering the rollers, reducing roller lifespan and increasing cooling water consumption and maintenance costs. Furthermore, the centralized lubrication system involves periodically and quantitatively adding grease to the bearings; some grease exits the bearing housing and enters the flushing water system, causing water pollution and clogging of the cooling nozzles. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention provides a multifunctional bearing, bearing housing, and assembly method thereof. In addition to the functions of a traditional bearing, it adds dynamic sealing water supply and flexible self-sealing functions; the process is simplified, the cost is low, the operation is reliable, and it can reduce or eliminate pollution from bearing grease.

[0005] To achieve the above objectives, the present invention employs the following technical solution:

[0006] A multifunctional bearing and bearing housing includes an inner ring, an outer ring, a cage, rollers, a bearing housing, and an end cover. The outer ring is installed inside the bearing housing, the inner ring is installed inside the outer ring, the cage is installed between the inner and outer rings, the rollers are embedded in the cage, and the end cover covers the end of the bearing housing. It also includes a bellows seal I, a bellows seal II, a dynamic seal stator I, a dynamic seal stator II, and two dynamic seals. The dynamic seal stator I is installed at one end of the outer wall of the inner ring and is installed inside the dynamic seal stator I. The dynamic seal stator II is installed at the other end of the outer wall of the inner ring and is installed inside the dynamic seal stator II. The large end of the bellows seal I is connected to the outer ring, and the small end is connected to the dynamic seal stator I. The large end of the bellows seal II is connected to the outer ring, and the small end is connected to the dynamic seal stator II. The end cover and the bearing housing are provided with corresponding cooling water holes.

[0007] The inner ring is longer than the outer ring, and the shape of the middle area is the same as that of a standard bearing inner ring. The cylindrical outer end area is respectively matched with dynamic seal stator I, dynamic seal I and dynamic seal stator II, dynamic seal II, to serve as a dynamic seal rotor. Its inner diameter is provided with an O-ring III sealing groove, and the O-ring III is placed in the O-ring III sealing groove.

[0008] The corrugated seal I is a steel-framed rubber ring with a corrugated axial cross-section. The large end of the corrugated seal I is interference-fitted and bonded to the outer ring, and the small end of the corrugated seal I is interference-fitted and bonded to the dynamic seal stator I.

[0009] The corrugated seal II is a steel-framed rubber ring with a corrugated axial cross-section. The large end of the corrugated seal II is interference-fitted and bonded to the outer ring, and the small end of the corrugated seal II is interference-fitted and bonded to the dynamic seal stator II.

[0010] The bearing housing is provided with roller cooling water holes at the bottom, with one or two holes; the bearing housing and the dynamic seal stator I are provided with an O-ring I sealing groove, and the O-ring I is placed in the O-ring I sealing groove.

[0011] The inner end face of the end cover is provided with cooling water holes, the number of which is the same as the number of cooling water holes in the bearing housing; when there is one cooling water hole, one end of the cooling water hole is connected to the cooling water hole in the bearing housing, and the other end of the cooling water hole is connected to the inner cavity of the end cover.

[0012] The inner end face of the end cover is provided with cooling water holes, the number of which is the same as the number of cooling water holes in the bearing housing; when there are two cooling water holes, one end of one cooling water hole is connected to the water inlet hole of the bearing housing, and the other end is connected to the external roller core tube through the central hole; one end of the other cooling water hole is connected to the water return hole of the bearing housing, and the other end is connected to the inner cavity of the end cover.

[0013] An O-ring II sealing groove is provided at the junction of the end cover and the dynamic seal stator II, and the O-ring II is placed in the O-ring II sealing groove; an anti-rotation blind hole is provided at the junction of the end cover and the dynamic seal stator II.

[0014] It also includes anti-rotation pin I and anti-rotation pin II. The dynamic seal stator I, the dynamic seal stator II, the bearing housing and the end cover are provided with anti-rotation holes. One end of anti-rotation pin I is inserted into the anti-rotation hole of the dynamic seal stator I, and the other end of anti-rotation pin I is inserted into the anti-rotation hole of the bearing housing. One end of anti-rotation pin II is inserted into the anti-rotation hole of the dynamic seal stator II, and the other end of anti-rotation pin II is inserted into the anti-rotation hole of the end cover.

[0015] An assembly method for a multifunctional bearing and bearing housing specifically includes the following steps:

[0016] 1) The inner ring, outer ring, cage, and rollers are assembled together to form a traditional bearing body structure;

[0017] 2) Interlock and bond the small end of the corrugated seal I to the dynamic seal stator I; place the dynamic seal I into the sealing groove of the dynamic seal stator I;

[0018] 3) Interlock and bond the small end of the corrugated seal II to the dynamic seal stator II; place the dynamic seal II into the sealing groove of the dynamic seal stator II;

[0019] 4) The large end of the corrugated seal I, the dynamic seal stator I, and the dynamic seal I assembly is interference-fitted and bonded to the outer ring end face, while the small end of the assembly is assembled with the inner ring.

[0020] 5) The large end of the bellows seal II, the dynamic seal stator II, and the dynamic seal II assembly is interference-fitted and bonded to the outer ring end face, while the small end of the assembly is assembled with the inner ring.

[0021] 6) Insert the anti-rotation pin I into the anti-rotation hole of the bearing housing and weld it firmly to the outside;

[0022] 7) Place O-ring I into the O-ring I sealing groove in the bearing housing;

[0023] 8) Place the inner ring, outer ring, cage, rollers, bellows seal I, dynamic seal stator I, dynamic seal I, bellows seal II, dynamic seal stator II and dynamic seal II assembly into the bearing housing, anti-rotation pin I and O-ring I assembly; when placing, dynamic seal stator I is at the front end and dynamic seal stator II is at the rear end;

[0024] 9) Place O-ring II into the sealing groove of O-ring II on the end cap, and place anti-rotation pin II into the anti-rotation hole on the end cap;

[0025] 10) Assemble the end cap, O-ring II and anti-rotation pin II into the bearing housing and fasten them with bolts;

[0026] 11) Place the O-ring III into the sealing groove of the inner O-ring III.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. The present invention is provided with dynamic sealing stator I, dynamic sealing stator II, dynamic seal I and dynamic seal II, and the end cover and bearing housing are provided with corresponding cooling water holes, thereby realizing the dynamic seal water supply function. There is no need to set up a rotary joint. It has the advantages of simple process, reliable operation, improved roller service life and reduced roller operating costs.

[0029] 2. The bellows seal I, bellows seal II, dynamic seal stator I, dynamic seal stator II, inner ring and outer ring of the present invention form a self-sealing environment. The present invention has a flexible self-sealing function. The bearing grease is sealed in the self-sealing environment, eliminating the need to add grease to the bearing at regular intervals and in fixed quantities. This avoids grease from entering the slag flushing water system from the bearing housing, causing water pollution and clogging of the cooling nozzles, and reduces or eliminates pollution caused by bearing grease. Attached Figure Description

[0030] Figure 1 This is a front view of the multifunctional bearing and bearing housing assembly of the present invention;

[0031] Figure 2 yes Figure 1 AA cross-section view;

[0032] Figure 3 This is a front view of the bearing housing of the present invention;

[0033] Figure 4 yes Figure 3 BB cross-section;

[0034] Figure 5 yes Figure 3 CC cross-section;

[0035] Figure 6 This is a front view of the end cap of the present invention;

[0036] Figure 7 yes Figure 6 DD cross-section;

[0037] Figure 8 yes Figure 6 EE cross-section.

[0038] In the diagram: 1-Inner ring; 2-Outer ring; 3-Cage; 4-Roller; 5-Belling seal I; 6-Belling seal II; 7-Dynamic seal stator I; 8-Dynamic seal stator II; 9-Bearing housing; 10-End cover; 11-Anti-rotation pin I; 12-Anti-rotation pin II; 13-Dynamic seal I; 14-Dynamic seal II; 15-O-ring I; 16-O-ring II; 17-O-ring III; 18-Bolt. Detailed Implementation

[0039] The following detailed description of specific embodiments of the present invention is not intended to limit the scope of the invention:

[0040] Example:

[0041] like Figure 1 , Figure 2As shown, a multifunctional bearing and bearing housing are composed of an inner ring 1, an outer ring 2, a cage 3, a roller 4, a bellows seal I 5, a bellows seal II 6, a dynamic seal stator I 7, a dynamic seal stator II 8, a bearing housing 9, an end cover 10, an anti-rotation pin I 11, an anti-rotation pin II 12, a dynamic seal I 13, a dynamic seal II 14, an O-ring I 15, an O-ring II 16, an O-ring III 17, and a bolt 18.

[0042] The inner ring 1 is placed inside the outer ring 2, and the cage 3 is placed between the inner ring 1 and the outer ring 2. The roller 4 is embedded in the cage 3. The large end of the bellows seal I 5 is interference-fitted and bonded to the outer ring 2, and the small end of the bellows seal I 5 is interference-fitted and bonded to the dynamic seal stator I 7; the large end of the bellows seal II 6 is interference-fitted and bonded to the outer ring 2, and the small end of the bellows seal II 6 is interference-fitted and bonded to the dynamic seal stator II 8.

[0043] The dynamic seal stator I7 is fitted with the outer diameter of the inner ring 1; the dynamic seal stator II8 is fitted with the outer diameter of the inner ring 1. The inner diameter of the bearing housing 9 is fitted with the outer diameter of the outer ring 2; the end cover 10 is connected to the bearing housing 9 by bolts 18, and the inner center hole of the end cover 10 is connected to the outer roller core tube.

[0044] One end of anti-rotation pin I11 is inserted into the anti-rotation hole of dynamic seal stator I7, and the other end of anti-rotation pin I11 is inserted into the anti-rotation hole of bearing housing 9; one end of anti-rotation pin II12 is inserted into the anti-rotation hole of dynamic seal stator II8, and the other end of anti-rotation pin II12 is inserted into the anti-rotation hole of end cover 10.

[0045] Dynamic seal I13 is located in the sealing groove of dynamic seal stator I7 and is a rubber sealing ring, preferably using a step seal type; dynamic seal II14 is located in the sealing groove of dynamic seal stator II8 and is a rubber sealing ring, preferably using a step seal type; O-ring I15 is located in the sealing groove of bearing housing 9; O-ring II16 is located in the sealing groove of end cover 10; O-ring III17 is located in the sealing groove of inner ring 1.

[0046] The inner ring 1 is longer than the outer ring 2, and the shape of the middle area is the same as that of the standard bearing inner ring. The cylindrical outer end area mates with dynamic seal stator I7, dynamic seal I13 and dynamic seal stator II8, dynamic seal II14 respectively. The inner diameter is provided with O-ring III sealing groove.

[0047] The corrugated seal I5 is a steel-framed rubber ring with a corrugated axial cross-section. The large end of the corrugated seal I5 is interference-fitted and bonded to the outer ring 2, and the small end of the corrugated seal I5 is interference-fitted and bonded to the dynamic seal stator I7.

[0048] The corrugated seal II6 is a steel-framed rubber ring with a corrugated axial cross-section. The large end of the corrugated seal II6 is interference-fitted and bonded to the outer ring 2, and the small end of the corrugated seal II6 is interference-fitted and bonded to the dynamic seal stator II8.

[0049] See Figure 3 , Figure 4 , Figure 5 The bearing housing 9 is equipped with cooling water holes at the bottom, with one or two holes; the bearing housing 9 and the dynamic seal stator I 7 are provided with O-ring I sealing grooves.

[0050] See Figure 6 , Figure 7 , Figure 8 The inner end face of the end cover 10 is provided with cooling water holes, the number of which is the same as that of the bearing housing 9; when there is one cooling water hole, one end of the cooling water hole is connected to the cooling water hole of the bearing housing 9, and the other end of the cooling water hole is connected to the inner cavity of the end cover 10.

[0051] When there are two cooling water holes, one end of one cooling water hole is connected to the water inlet hole of the bearing housing 9, and the other end is connected to the external roller core tube through the central hole; one end of the other cooling water hole is connected to the water return hole of the bearing housing 9, and the other end is connected to the inner cavity of the end cover 10; an O-ring II sealing groove is provided at the mating surface between the end cover 10 and the dynamic seal stator II 8; an anti-rotation blind hole is provided at the mating surface between the end cover 10 and the dynamic seal stator II 8.

[0052] like Figure 1-8 As shown, an assembly method for a multifunctional bearing and bearing housing specifically includes the following steps:

[0053] 1) The inner ring 1, outer ring 2, cage 3 and roller 4 are assembled together according to the traditional method to form the body structure of the traditional bearing.

[0054] 2) Interference fit and bond the small end of the corrugated seal I5 to the dynamic seal stator I7; place the dynamic seal I13 into the sealing groove of the dynamic seal stator I7.

[0055] 3) Interference fit and bond the small end of the corrugated seal II6 to the dynamic seal stator II8; place the dynamic seal II14 into the sealing groove of the dynamic seal stator II8.

[0056] 4) The large end of the corrugated seal I, the dynamic seal stator I, and the dynamic seal I assembly is interference-fitted and bonded to the outer ring end face, while the small end of the assembly is assembled with the inner ring.

[0057] 5) Interference fit and bond the large end of the corrugated seal II, dynamic seal stator II and dynamic seal II assembly to the outer ring end face, and at the same time assemble the small end of the assembly with the inner ring.

[0058] 6) Insert the anti-rotation pin I11 into the anti-rotation hole of the bearing housing 9 and weld it firmly to the outside.

[0059] 7) Place the O-ring I15 into the sealing groove of bearing housing 9.

[0060] 8) Place the assembly of inner ring 1, outer ring 2, cage 3, roller 4, bellows seal I 5, dynamic seal stator I 7, dynamic seal I 13, bellows seal II 6, dynamic seal stator II 8, and dynamic seal II 14 into the assembly of bearing housing 9, anti-rotation pin I 11, and O-ring I 15; when placing, dynamic seal stator I 7 should be at the front end, and dynamic seal stator II 8 should be at the rear end.

[0061] 9) Place the O-ring II16 into the sealing groove of the end cap 10; place the anti-rotation pin II12 into the anti-rotation hole of the end cap 10.

[0062] 10) Assemble the end cap 10, O-ring II 16 and anti-rotation pin II 12 with the bearing housing 9 and fasten them with bolts 18.

[0063] 11) Place the O-ring Ⅲ17 into the sealing groove of the inner ring 1.

[0064] This invention achieves dynamic sealing water supply without the need for rotary joints, offering advantages such as simplified process, reliable operation, increased roller lifespan, and reduced roller operating costs. Furthermore, this invention features a flexible self-sealing function, enclosing the bearing grease in a self-sealing environment. This eliminates the need for timed and quantitative grease replenishment, preventing grease from entering the slag flushing water system from the bearing housing, thus avoiding water contamination and clogging of cooling nozzles, and reducing or eliminating pollution from bearing grease.

[0065] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for assembling a bearing and a bearing housing, characterized in that, The bearing and bearing housing include an inner ring, an outer ring, a cage, rollers, a bearing housing, and an end cover. The outer ring is installed inside the bearing housing, the inner ring is installed inside the outer ring, the cage is installed between the inner and outer rings, the rollers are embedded in the cage, and the end cover covers the end of the bearing housing. The bearing is characterized by further including a bellows seal I, a bellows seal II, a dynamic seal stator I, a dynamic seal stator II, and two dynamic seals. The dynamic seal stator I is installed at one end of the outer wall of the inner ring and is installed inside the dynamic seal stator I. The dynamic seal stator II is installed at the other end of the outer wall of the inner ring and is installed inside the dynamic seal stator II. The large end of the bellows seal I is connected to the outer ring, and the small end is connected to the dynamic seal stator I. The large end of the bellows seal II is connected to the outer ring, and the small end is connected to the dynamic seal stator II. The end cover and the bearing housing are provided with corresponding cooling water holes. The inner ring is longer than the outer ring. The inner ring is cylindrical, and the shape of the middle area of ​​the cylindrical shape is the same as that of a standard bearing inner ring. The outer end area of ​​the cylindrical shape mates with dynamic seal stator I, dynamic seal I and dynamic seal stator II, dynamic seal II, respectively, to function as a dynamic seal rotor. The inner diameter of the inner ring is provided with an O-ring III sealing groove, and the O-ring III is placed in the O-ring III sealing groove. The corrugated seal I is a steel-framed rubber ring with a corrugated axial cross-section. The large end of the corrugated seal I is interference-fitted and bonded to the outer ring, and the small end of the corrugated seal I is interference-fitted and bonded to the dynamic seal stator I. The corrugated seal II is a steel-framed rubber ring with a corrugated axial cross-section. The large end of the corrugated seal II is interference-fitted and bonded to the outer ring, and the small end of the corrugated seal II is interference-fitted and bonded to the dynamic seal stator II. The bearing housing and the dynamic seal stator I are provided with an O-ring I sealing groove, and the O-ring I is placed in the O-ring I sealing groove; An O-ring II sealing groove is provided at the junction of the end cover and the dynamic seal stator II, and the O-ring II is placed in the O-ring II sealing groove; an anti-rotation blind hole is provided at the junction of the end cover and the dynamic seal stator II. It also includes anti-rotation pin I and anti-rotation pin II. The dynamic seal stator I, the dynamic seal stator II, the bearing housing and the end cover are provided with anti-rotation holes. One end of anti-rotation pin I is inserted into the anti-rotation hole of the dynamic seal stator I, and the other end of anti-rotation pin I is inserted into the anti-rotation hole of the bearing housing. One end of anti-rotation pin II is inserted into the anti-rotation hole of the dynamic seal stator II, and the other end of anti-rotation pin II is inserted into the anti-rotation hole of the end cover. Specifically, the steps include the following: 1) The inner ring, outer ring, cage, and rollers are assembled together to form a traditional bearing body structure; 2) Interlock and bond the small end of the corrugated seal I to the dynamic seal stator I; place the dynamic seal I into the sealing groove of the dynamic seal stator I; 3) Interference fit and bond the small end of the corrugated seal II to the dynamic seal stator II; place the dynamic seal II into the sealing groove of the dynamic seal stator II; 4) The large end of the bellows seal I, the dynamic seal stator I, and the dynamic seal I assembly is interference-fitted and bonded to the outer ring end face, while the small end of the assembly is assembled with the inner ring. 5) The large end of the bellows seal II, the dynamic seal stator II, and the dynamic seal II assembly is interference-fitted and bonded to the outer ring end face, while the small end of the assembly is assembled with the inner ring. 6) Insert the anti-rotation pin I into the anti-rotation hole of the bearing housing and weld it firmly to the outside; 7) Place O-ring I into the O-ring I sealing groove in the bearing housing; 8) Place the inner ring, outer ring, cage, rollers, bellows seal I, dynamic seal stator I, dynamic seal I, bellows seal II, dynamic seal stator II and dynamic seal II assembly into the bearing housing, anti-rotation pin I and O-ring I assembly; when placing, dynamic seal stator I is at the front end and dynamic seal stator II is at the rear end; 9) Place O-ring II into the sealing groove of O-ring II on the end cap, and place anti-rotation pin II into the anti-rotation hole on the end cap; 10) Assemble the end cap, O-ring II, and anti-rotation pin II into the bearing housing and fasten them with bolts; 11) Place the O-ring III into the sealing groove of the inner O-ring III.

2. The assembly method of a bearing and bearing housing according to claim 1, characterized in that, The bearing housing is equipped with roller cooling water holes at the bottom, with one or two holes in total; The inner end face of the end cap is provided with cooling water holes, the number of which is the same as the number of cooling water holes of the rollers in the bearing housing; When there is one cooling water hole, one end of the cooling water hole is connected to the roller cooling water hole of the bearing housing, and the other end of the cooling water hole is connected to the inner cavity of the end cover. When there are two cooling water holes, one end of one cooling water hole is connected to the water inlet hole of the bearing housing, and the other end is connected to the outer roller core tube through the central hole; one end of the other cooling water hole is connected to the water return hole of the bearing housing, and the other end is connected to the inner cavity of the end cover.

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