Bearing easy to assemble

Abstract

The bearing easy to assemble comprises an outer ring assembly, an inner ring, a metal end cover and a plurality of rollers, the outer ring assembly is formed by clamping a first semi-ring and a second semi-ring, the first semi-ring is integrally connected with a first semi-ring, the second semi-ring is integrally connected with a second semi-ring, and the first semi-ring and the second semi-ring are provided with a plurality of rolling grooves. The inner ring is rotationally arranged in the rotating cavity and is in rolling fit with the roller, a mounting groove for accommodating the metal end cover is formed in the side part of the retainer structure between the first half ring and the second half ring, the first half ring and the second half ring are provided with a plurality of clamping columns, the metal end cover is provided with a plurality of clamping grooves, and when the metal end cover is mounted in the mounting groove, the clamping columns are in clamping fit with the corresponding clamping grooves. The outer wall of the metal end cover is in interference fit with the side wall of the mounting groove; a lubricating channel is formed in the retainer structure in the circumferential direction, and a sealing gasket made of polytetrafluoroethylene materials is embedded in the metal end cover. The bearing is easy to assemble, and the rollers are not easy to deform in the bearing assembling process.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing technical field, especially easy to assemble bearing. BACKGROUND

[0002] Bearing is an important spare part in contemporary mechanical equipment, its main function is supporting mechanical rotating body, reducing its friction coefficient in the movement process, and ensuring its rotation precision, and the roller bearing is one kind of rolling bearing, mainly by outer ring, inner ring, roller, retainer and sealing end cover five parts constitute, the common roller bearing its inner ring and outer ring adopt integral molding ring structure, when assembling, need first put the predetermined number of rollers into the gap between the inner ring and the outer ring, then through special tool, each roller is evenly distributed between the inner ring and the outer ring, finally, the retainer is accurately installed between the inner ring and the outer ring to realize the retention and positioning of the roller, but the roller and the retainer of the roller bearing with this structure need special tools for assembling, the operation is more troublesome, and because the gap between the inner ring and the outer ring is small, the roller is prone to deformation when being pressed into the inner ring and the outer ring, which needs to be improved. SUMMARY

[0003] The utility model discloses a kind of bearings of easy to assemble, with the effect that easy to assemble, roller is not prone to deformation in the process of bearing assembly.

[0004] The above technical purpose of the utility model is realized by the following technical scheme: a kind of bearings of easy to assemble, including outer ring assembly, inner ring, metal end cover and several rollers, the outer ring assembly is formed by the first half ring and the second half ring by clamping structure clamping, the inner wall of the first half ring is concentric and integrally connected with the first half ring, the inner wall of the second half ring is concentric and integrally connected with the second half ring, the first half ring and the second half ring are clamped to form annular retainer structure;

[0005] Rotary cavity is formed between the first half ring and the second half ring, the first half ring, the second half ring are spaced apart and provided with a plurality of rolling grooves communicating with the rotary cavity along the circumference, the axial opening of the rolling groove penetrates the side wall corresponding to the first half ring and the second half ring, the roller is rotatably arranged in the corresponding rolling groove and partially exposed in the rotary cavity, and the inner ring is rotatably arranged in the rotary cavity and in rolling cooperation with the roller.

[0006] Installation groove for accommodating the metal end cover is formed between the first half ring and the second half ring on the side of the retainer structure, the metal end cover is in stop cooperation with the inner ring, the first half ring and the second half ring are provided with a plurality of clamping columns, the metal end cover is provided with a plurality of clamping grooves, when the metal end cover is installed in the installation groove, the clamping column is clamped and matched with the corresponding clamping groove, and the outer wall of the metal end cover is in interference fit with the side wall of the installation groove.

[0007] The retaining cage structure is provided with a lubricating channel in the circumferential direction, the lubricating channel is communicated with the rolling groove, and the metal end cover is embedded with a sealing gasket made of polytetrafluoroethylene material, and the sealing gasket is in sealing cooperation with the lubricating channel.

[0008] By adopting the above technical scheme, the plurality of rollers are axially inserted into the corresponding rolling grooves of the first half ring and the second half ring during assembly, then the inner ring is placed between the first half ring and the second half ring, and then the first half ring and the second half ring are clamped into the outer ring assembly by using the clamping structure, so that the first half ring and the second half ring are spliced into the annular retaining cage structure, and then the lubricant is applied to the rollers and the lubricating channel, and finally the metal end cover provided with the sealing gasket is pressed into the mounting groove of the bearing by using the clamping effect of the clamping column and the clamping groove, so that the sealing gasket seals the lubricant in the lubricating channel and the rolling groove, and the interference fit between the outer wall of the metal end cover and the side wall of the mounting groove improves the connection firmness among the metal end cover, the first half ring and the second half ring, effectively preventing the first half ring and the second half ring from separating from each other, and the rollers are directly assembled on the retaining cage structure through the rolling grooves during assembly, avoiding the deformation of the rollers during assembly, and the inner ring is directly clamped in the rotating cavity formed between the first half ring and the second half ring, avoiding the misalignment of the rollers during assembly, and the first half ring and the first half ring are integrally formed, and the second half ring and the second half ring are integrally formed, which can reduce the assembly error between the outer ring assembly and the retaining cage structure, improve the simplicity and accuracy of assembly, and the sealing gasket made of polytetrafluoroethylene can effectively prevent the leakage of lubricant and the intrusion of external pollutants into the bearing, thereby prolonging the service life of the bearing.

[0009] The clamping structure comprises a plurality of clamping blocks and clamping grooves, the clamping blocks are integrally connected to the two ends of the first half ring, the clamping grooves are formed in the two end faces of the second half ring, and the clamping blocks are in clamping cooperation with the corresponding clamping grooves.

[0010] By adopting the above technical scheme, the first half ring and the second half ring can be quickly clamped and fixed to form the outer ring assembly.

[0011] The inner wall of the first half ring and the second half ring is integrally provided with a circular arc guide rib in the circumferential direction, the outer wall of the inner ring is provided with an annular guide groove in the circumferential direction, and the circular arc guide rib is in guide cooperation with the annular guide groove.

[0012] By adopting the above technical scheme, the axial limiting effect of the circular arc guide rib on the annular guide groove can effectively prevent the axial deviation of the inner ring relative to the outer ring assembly.

[0013] The further setting of the utility model discloses: a plurality of rolling grooves are symmetrically arranged on the two sides of the corresponding first half ring and second half ring.

[0014] Through the above technical scheme, the rollers are symmetrically arranged in the corresponding rolling grooves on the two sides of the retainer structure, so that the uniformity of stress distribution during the rotation of the inner ring relative to the outer ring assembly can be improved.

[0015] The further setting of the utility model discloses: the one end of the roller near the arc guide rib is integrally provided with a first hemispherical convex part, the first half ring and the second half ring are provided with a first hemispherical groove communicating with the rolling groove, and the first hemispherical convex part is rotationally matched with the first hemispherical groove.

[0016] Through the above technical scheme, the rollers can reduce the contact area with the first half ring or the second half ring through the first hemispherical convex part, so that the rotation smoothness of the rollers is improved, and the smoothness of the rotation of the inner ring relative to the outer ring assembly is further improved.

[0017] The further setting of the utility model discloses: the one end of the roller near the metal end cover is integrally provided with a second hemispherical convex part, the metal end cover is provided with a second hemispherical groove corresponding to the second hemispherical convex part, and the second hemispherical convex part is rotationally matched with the second hemispherical groove.

[0018] Through the above technical scheme, the contact rotation of the second hemispherical convex part and the second hemispherical groove can reduce the contact area between the rollers and the metal end cover, so that the rotation smoothness of the rollers is improved.

[0019] The further setting of the utility model discloses: a plurality of communication grooves are formed in the first half ring and the second half ring, and the lubricating channel is communicated with the corresponding rolling groove through the communication groove.

[0020] The further setting of the utility model discloses: the axial opening depth of the plurality of communication grooves and the rolling grooves in the first half ring and the second half ring is equal to the axial opening depth of the lubricating channel.

[0021] Through the above technical scheme, the depth of the rolling groove, the communication groove and the lubricating channel is consistent, so that the lubricant can flow between adjacent rolling grooves without resistance, the lubricity of the rollers in each rolling groove is ensured to be consistent, and the stress concentration risk is reduced.

[0022] In summary, the utility model has the following beneficial effects:

[0023] The first half ring and the second half ring are integrally formed, the first half ring and the second half ring are clamped and fixed by the clamping structure during assembly, the first half ring and the second half ring are jointed to form the retainer structure, the inner ring is rotatably arranged in the rotating cavity between the first half ring and the second half ring, the assembly error between the outer ring assembly and the retainer structure is reduced, the assembly convenience and accuracy are improved, then the metal end cover is arranged on the two sides of the bearing by the clamping effect of the clamping column and the clamping groove, the interference fit between the outer wall of the metal end cover and the side wall of the mounting groove improves the connection firmness between the metal end cover, the first half ring and the second half ring, and effectively prevents the separation of the first half ring and the second half ring; during the assembly process, the roller is directly assembled on the retainer structure through the rolling groove, and the inner ring is directly clamped in the rotating cavity formed between the first half ring and the second half ring, so that the dislocation and deformation of the roller during assembly can be avoided; the lubricating channel is arranged on the retainer structure in the circumferential direction and is communicated with the rolling groove, uniform lubrication of the rollers is realized, in addition, the sealing gasket made of polytetrafluoroethylene material is embedded on the metal end cover, and the sealing gasket made of polytetrafluoroethylene can effectively prevent the leakage of lubricant and the invasion of external pollutants into the bearing, thereby prolonging the service life of the bearing. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the overall assembly view of the utility model.

[0025] Figure 2 It is the explosion view of the utility model.

[0026] Figure 3 It is the utility model Figure 2 A region of the partial enlarged view in the utility model.

[0027] Figure 4 It is the overall explosion view of the utility model.

[0028] Figure 5 It is the sectional view of the utility model Figure 1 .

[0029] In the drawing: 1, outer ring assembly; 11, mounting groove; 2, first half ring; 3, second half ring; 4, retainer structure; 41, rotating cavity; 42, rolling groove; 43, clamping column; 44, lubricating channel; 45, communication groove; 46, circular arc guide rib; 47, first half ball groove; 5, first half ring; 51, clamping block; 6, second half ring; 61, clamping groove; 7, inner ring; 71, annular guide groove; 8, roller; 81, first half ball convex part; 82, second half ball convex part; 9, metal end cover; 90, embedding groove; 91, clamping groove; 92, sealing gasket; 93, second half ball groove. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the accompanying drawings.

[0031] An easy-to-assemble bearing, such as Figures 1-4 As shown, the assembly includes an outer ring assembly 1, an inner ring 7, a metal end cap 9, and several rollers 8. The outer ring assembly 1 is formed by snapping together a first half-ring 2 and a second half-ring 3. A first half-ring 5 is concentrically and integrally connected to the inner wall of the first half-ring 2, and a second half-ring 6 is concentrically and integrally connected to the inner wall of the second half-ring 3. The first half-ring 5 and the second half-ring 6 are snapped together to form an annular retainer structure 4. In this embodiment, the contact surface of the first half-ring 5 and the second half-ring 6 is set as a plane; a rotating cavity 41 is formed between the first half-ring 5 and the second half-ring 6. The first half-ring 5 and the second half-ring 6 are circumferentially spaced with several rolling grooves 42 that communicate with the rotating cavities 41. The axial openings of the rolling grooves 42 penetrate the sidewalls of the corresponding first half-ring 5 and second half-ring 6. Rollers 8 are rotatably disposed in the corresponding rolling grooves 42 and partially exposed in the rotating cavities 41. The inner ring 7 is rotatably disposed in the rotating cavities 41 and rolls with the rollers 8. A mounting groove 11 for accommodating a metal end cap 9 is formed on the side of the cage structure 4 between the first half-ring 2 and the second half-ring 3. The metal end cap 9 is stopped by the inner ring 7. The first half-ring 5 and the second half-ring 6 are provided with a number of locking posts 43, and the metal end cap 9 is provided with a number of locking slots 91. The metal end cap 9 is pressed into the mounting groove 11 by a press or other device to achieve the assembly of the metal end cap 9. When the metal end cap 9 is installed in the mounting groove 11, the locking posts 43 are tightly engaged with the corresponding locking slots 91, and the outer wall of the metal end cap 9 is interference-fitted with the side wall of the mounting groove 11. The cage structure 4 is provided with a lubrication channel 44 along the circumference, and the lubrication channel 44 is connected to the rolling groove 42. The metal end cap 9 faces the cage structure 4. A groove 90 is provided on the side, and a sealing gasket 92 is embedded in the groove 90. The sealing gasket 92 is made of polytetrafluoroethylene and is used to seal the lubricant in the lubrication channel 44. The snap-fit ​​structure includes several snap-fit ​​blocks 51 and snap-fit ​​grooves 61. The snap-fit ​​blocks 51 are integrally connected to both ends of the first half ring 5, and the snap-fit ​​grooves 61 are opened on both ends of the second half ring 6. The snap-fit ​​blocks 51 and the corresponding snap-fit ​​grooves 61 are snapped together, so that the first half ring 2 and the second half ring 3 can be quickly snapped together to form the outer ring assembly 1.

[0032] like Figures 2-5As shown, the inner wall of the first half ring 5 and the second half ring 6 is integrally provided with a circular arc guide rib 46 in the circumferential direction, and the outer wall of the inner ring 7 is provided with an annular guide groove 71 in the circumferential direction. The circular arc guide rib 46 is guided and matched with the annular guide groove 71. By using the axial limiting action of the circular arc guide rib 46 on the annular guide groove 71, the axial deviation of the inner ring 7 relative to the outer ring assembly 1 can be effectively prevented. A plurality of rolling grooves 42 are symmetrically arranged on both sides of the corresponding first half ring 5 and second half ring 6, and a plurality of rolling grooves 42 are arranged on both sides of the circular arc guide rib 46, so that the rollers 8 are symmetrically arranged in the corresponding rolling grooves 42 on both sides of the retainer structure 4. The uniformity of stress distribution during the rotation of the inner ring 7 relative to the outer ring assembly 1 can be improved. The end of the roller 8 close to the circular arc guide rib 46 is integrally provided with a first hemispherical protrusion 81. The first half ring 5 and the second half ring 6 are provided with a first hemispherical groove 47 communicating with the rolling groove 42. The first hemispherical protrusion 81 is rotationally matched with the first hemispherical groove 47. The first hemispherical protrusion 81 can reduce the contact area between the roller 8 and the first half ring 5 or the second half ring 6, thereby improving the smoothness of the rotation of the roller 8, and further improving the smoothness of the rotation of the inner ring 7 relative to the outer ring assembly 1.

[0033] As shown in the figure, Figures 3-5 The end of the roller 8 close to the metal end cover 9 is integrally provided with a second hemispherical protrusion 82. The metal end cover 9 is provided with a second hemispherical groove 93 corresponding to the second hemispherical protrusion 82. The second hemispherical protrusion 82 is rotationally matched with the second hemispherical groove 93. By using the contact rotation of the second hemispherical protrusion 82 and the second hemispherical groove 93, the contact area between the roller 8 and the metal end cover 9 can be reduced, thereby improving the smoothness of the rotation of the roller 8. A plurality of communication grooves 45 are provided on the first half ring 5 and the second half ring 6. The lubricating channel 44 is communicated with the corresponding rolling groove 42 through the communication groove 45. The axial opening depth of the plurality of communication grooves 45 and the rolling grooves 42 on the first half ring 5 and the second half ring 6 is equal to the axial opening depth of the lubricating channel 44. The axial opening depth in the embodiment refers to the groove hole depth opened in the axial direction of the bearing. The axial depth of the rolling groove 42, the communication groove 45 and the lubricating channel 44 is consistent, which can ensure that the lubricant flows between adjacent rolling grooves 42 without resistance, ensure the lubricity of the roller 8 in each rolling groove, and reduce the risk of stress concentration.

[0034] The utility model discloses a basic working principle is: first half circle 2 and second half circle 3 are formed through the clamping structure clamping and form the outer ring subassembly 1, the inner wall of first half circle 2 concentric and integrally connected with first half ring 5, the inner wall of second half circle 3 concentric and integrally connected with second half ring 6, first half ring 5 and second half ring 6 clamping form annular cage structure 4, the rotation cavity 41 is formed between first half ring 5 and second half ring 6, a plurality of rolling grooves 42 are set up on first half ring 5, second half ring 6, the inner ring 7 rotates and is established in the rotation cavity 41 and is rolled with the roller 8, and the installation groove 11 that accommodates the metal end cover 9 is formed between first half circle 2 and second half circle 3 in the side portion of cage structure 4, when the metal end cover 9 is installed in the installation groove 11, the clamping post 43 is tightly matched with the corresponding clamping groove 91, and the metal end cover 9 outer wall and the sidewall interference fit of installation groove 11, the lubrication passage 44 is opened along the circumferential direction of cage structure 4, and the lubrication passage 44 is communicated with rolling groove 42, and the sealing washer 92 made of polytetrafluoroethylene material is embedded on the metal end cover 9, when assembling, first a plurality of rollers 8 are axially inserted into the corresponding rolling groove 42 of first half ring 5 and second half ring 6, then the inner ring 7 is placed between first half circle 2 and second half circle 3, then the first half circle 2 and second half circle 3 are clamped into the outer ring subassembly 1 by the clamping structure, and first half ring 5 and second half ring 6 are spliced into annular cage structure 4, then the lubricant is applied to the roller 8 and the lubrication passage 44, finally, by the clamping effect of the clamping post 43 and the clamping groove 91, the metal end cover 9 with the sealing washer 92 is pressed into the installation groove 11 of the bearing, so that the sealing washer 92 seals the lubricant in the lubrication passage 44 and the rolling groove 42, and the interference fit between the outer wall of the metal end cover 9 and the sidewall of the installation groove 11 improves the connection firmness between the metal end cover 9, the first half circle 2 and the second half circle 3, effectively prevents the first half circle 2 and the second half circle 3 from separating from each other, and the roller 8 is directly assembled on the cage structure 4 through the rolling groove 42 during assembly, avoiding deformation of the roller 8 during assembly, and the inner ring 7 is directly clamped in the rotation cavity 41 formed between the first half circle 2 and the second half circle 3, avoiding misalignment of the roller 8 during assembly, and the first half circle 2 and the first half ring 5 are integrally formed, and the second half circle 3 and the second half ring 6 are integrally formed, which can reduce the assembly error between the outer ring subassembly 1 and the cage structure 4, improve the assembly simplicity and accuracy, and the sealing washer 92 made of polytetrafluoroethylene can effectively prevent lubricant leakage and external contaminants from entering the bearing, thereby prolonging the service life of the bearing.

[0035] The above only is the preferred implementation of the utility model, therefore, the equivalent change or modification of the structure, features and principle that is made according to the patent application range of the utility model is included in the patent application range of the utility model.

Claims

1. A bearing easy to assemble comprising an outer ring assembly (1), an inner ring (7), a metal end cap (9) and a number of rollers (8), characterized in that: The outer ring assembly (1) is formed by clamping the first half ring (2) and the second half ring (3) through the clamping structure, the inner wall of the first half ring (2) is integrally connected with the first half ring (5) concentrically, the inner wall of the second half ring (3) is integrally connected with the second half ring (6) concentrically, and the first half ring (5) and the second half ring (6) are clamped to form a ring-shaped retainer structure (4). The first half ring (5) and the second half ring (6) form a rotating cavity (41) therebetween, the first half ring (5) and the second half ring (6) are provided with a plurality of rolling grooves (42) communicating with the rotating cavity (41) at intervals in the circumferential direction, the axial openings of the rolling grooves (42) penetrate the side walls corresponding to the first half ring (5) and the second half ring (6), the roller (8) is rotatably arranged corresponding to the rolling groove (42) and partially exposed in the rotating cavity (41), and the inner ring (7) is rotatably arranged in the rotating cavity (41) and is in rolling cooperation with the roller (8). The first half ring (2) and the second half ring (3) form a mounting groove (11) for accommodating the metal end cover (9) on the side of the retainer structure (4), the metal end cover (9) is in stop cooperation with the inner ring (7), the first half ring (5) and the second half ring (6) are provided with a plurality of clamping columns (43), the metal end cover (9) is provided with a plurality of clamping grooves (91), when the metal end cover (9) is mounted in the mounting groove (11), the clamping column (43) is clamped in cooperation with the corresponding clamping groove (91), and the outer wall of the metal end cover (9) is in interference cooperation with the side wall of the mounting groove (11). The retainer structure (4) is provided with a lubricating channel (44) in the circumferential direction, the lubricating channel (44) communicates with the rolling groove (42), and the metal end cover (9) is embedded with a sealing gasket (92) made of polytetrafluoroethylene material, and the sealing gasket (92) is in sealing cooperation with the lubricating channel (44).

2. A bearing easy to assemble according to claim 1, characterized in that: The clamping structure comprises a plurality of clamping blocks (51) and clamping grooves (61), the clamping blocks (51) are integrally connected to the two ends of the first half ring (5), the clamping grooves (61) are formed in the two end faces of the second half ring (6), and the clamping blocks (51) are clamped in cooperation with the corresponding clamping grooves (61).

3. A bearing easy to assemble according to claim 1, characterized in that: The inner wall of the first half ring (5) and the second half ring (6) is integrally provided with a circular arc guide rib (46) in the circumferential direction, the outer wall of the inner ring (7) is provided with a ring-shaped guide groove (71) in the circumferential direction, and the circular arc guide rib (46) is in guide cooperation with the ring-shaped guide groove (71).

4. A bearing easy to assemble according to claim 1, characterized in that: A plurality of rolling grooves (42) are symmetrically arranged on both sides of the first half ring (5) and the second half ring (6).

5. A bearing easy to assemble according to claim 3, characterized in that: The roller (8) is integrally provided with a first hemispherical protrusion (81) at one end close to the circular arc guide rib (46), the first half ring (5) and the second half ring (6) are provided with a first hemispherical groove (47) communicating with the rolling groove (42), and the first hemispherical protrusion (81) is in rotational cooperation with the first hemispherical groove (47).

6. A bearing easy to assemble according to claim 1, characterized in that: The roller (8) is integrally provided with a second hemispherical convex part (82) at one end close to a metal end cover (9), the metal end cover (9) is provided with a second hemispherical groove (93) corresponding to the second hemispherical convex part (82), and the second hemispherical convex part (82) is rotationally matched with the second hemispherical groove (93).

7. A bearing easy to assemble according to claim 1, characterized in that: A plurality of communication grooves (45) are formed in the first half ring (5) and the second half ring (6), and the lubricating channel (44) and the corresponding rolling groove (42) are communicated through the communication grooves (45).

8. A bearing easy to assemble according to claim 7, characterized in that: The axial opening depth of the plurality of communication grooves (45) and the rolling grooves (42) on the first half ring (5) and the second half ring (6) is equal to the axial opening depth of the lubricating channel (44).

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