Conehead sliding sleeve modified bearing

Abstract

The utility model relates to a conical head sliding sleeve modified bearing which comprises a seat ring, a retainer, a shaft ring and a roller, the shaft ring, the retainer and the seat ring are sequentially sleeved in a step shape from inside to outside and from top to bottom, and the seat ring, the retainer and the shaft ring are detachably connected; the seat ring is an annular body, and a raceway face is obliquely arranged on the inner side of the seat ring and is an inwards-concave spherical face. The retainer comprises a fixing ring and a plurality of fixing blocks, and the fixing blocks are arranged on the peripheral side of the fixing ring in a surrounding manner; a roller is arranged between every two fixed blocks in a sliding manner, the rollers are uniformly distributed around the retainer, and the side surface of each roller is a convex spherical surface; the outer side of the shaft washer is provided with an annular raceway recessed inwards, the top face of the raceway is recessed inwards in an arc shape, the side face of the roller is matched with the top face of the raceway and the raceway face, and the race and the shaft washer are in rolling connection through the roller. According to the utility model, on the basis of the conical bearing 29240, the height of the shaft washer, the height of the seat ring and the outer diameter are increased, so that the axial force resistance and the load resistance are improved, and the installation is simple.

Description

Technical Field

[0001] The utility model relates to the field of bearing manufacturing, in particular to a cone head sliding sleeve modified bearing. Background Art

[0002] At present, when the foil rolling mill is used for uncoiling, the coiling cone head sleeve bearing adopts the tapered bearing 29240, which can withstand extremely high axial loads and considerable radial loads, and has the largest rated load of all thrust bearings, which can make the bearing configuration more compact and have higher power density. By combining two or more spherical roller thrust bearings together, it can have a self-aligning function (allowing shaft misalignment) or a very rigid bearing, which can well meet the working requirements and has been widely used.

[0003] However, the disassembly and assembly of the bearing is time-consuming and labor-intensive, and is too complicated. In addition, the cone head of the bearing is pushed by a large axial force after being clamped, and the bearing is frequently damaged, resulting in certain economic losses. Summary of the invention

[0004] In order to solve the problem that the tapered bearing 29240 is complicated to disassemble and easy to be damaged, the utility model proposes a tapered head sliding sleeve modified bearing. On the basis of the tapered bearing 29240, the inner diameter size of the bearing shaft ring is kept unchanged, the shaft ring height, the seat ring height and the outer diameter are increased, and the size of the roller is increased at the same time.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A cone head sliding sleeve modified bearing comprises a seat ring, a retainer, a shaft ring and a roller, wherein the shaft ring, the retainer and the seat ring are sequentially sleeved from inside to outside and from top to bottom in a stepped manner, and the seat ring, the retainer and the shaft ring are detachably connected to facilitate assembly and use;

[0007] The seat ring is an annular body, and a raceway surface is inclinedly arranged on the inner side of the seat ring to facilitate the rolling of the roller. The raceway surface is a concave spherical surface and has a self-aligning function;

[0008] The retainer includes a fixed ring and a fixed block, and a plurality of fixed blocks are arranged around the circumference of the fixed ring to facilitate the isolation of the rollers;

[0009] A roller is slidably arranged between each two of the fixed blocks to ensure that the rollers do not collide with each other when moving. The rollers are evenly arranged around the cage, and the side surfaces of the rollers are convex spherical surfaces for carrying axial loads and radial loads and reducing friction generated during movement.

[0010] An inwardly recessed annular raceway is provided on the outer side of the shaft ring, the top surface of the raceway is recessed inwardly in an arc shape, the side surface of the roller is matched with the top surface and the raceway surface of the raceway to facilitate the movement of the roller, and the seat ring and the shaft ring are connected by roller rolling.

[0011] Furthermore, the inner diameter of the seat ring is 253mm, the upper deviation of the inner diameter is 0.04mm, the lower deviation is 0mm, the outer diameter of the seat ring is 320mm, the upper deviation of the outer diameter is 0mm, the lower deviation is 0.040mm, and the seat ring height is 33mm. The height and outer diameter are increased, thereby increasing the bearing's ability to resist axial force load.

[0012] Furthermore, the raceway surface is a spherical surface with a radius of 216.5 mm and a point 182 mm above the axis of the seat ring, with an upper deviation of 0.03 mm and a lower deviation of 0.40 mm as the center of the ball, and has a self-aligning function.

[0013] Furthermore, the fixing block is a trapezoidal structure, which is convenient for isolating the rollers.

[0014] Furthermore, the shaft ring is an annular body, the inner diameter of the shaft ring is 200mm, the upper deviation of the inner diameter is 0mm, the lower deviation is 0.030mm, the outer diameter of the shaft ring is 299mm, the upper deviation of the outer diameter is 0mm, the lower deviation is 0.50mm, and the height of the shaft ring is 57mm. By increasing its height, the bearing's ability to resist axial force load is increased.

[0015] Furthermore, a circular groove is coaxially opened on the plane of the shaft ring, the inner diameter of the circular groove is 267mm, the upper deviation of the inner diameter is 0mm, the lower deviation is 1.0mm, the outer diameter of the circular groove is 299mm, the upper deviation of the outer diameter is 0mm, the lower deviation is 0.50mm, and the depth of the circular groove is greater than or equal to 2mm, which is convenient for assembly during use.

[0016] Furthermore, the outer contours of the seat ring and the shaft ring are both provided with chamfers, and the chamfer height is greater than or equal to 2 mm, which facilitates the assembly of the bearing.

[0017] Furthermore, a plurality of oil passages are provided on the shaft ring, and the plurality of oil passages are symmetrically distributed along the central axis of the shaft ring, so as to facilitate the addition of lubricating oil to the bearing.

[0018] Furthermore, the oil channel passes through the shaft ring and is connected to the raceway. A plurality of liquid storage tanks are arranged in the middle of the oil channel to store lubricating oil. When the bearing is installed, the lubricating oil will enter the raceway.

[0019] Furthermore, a screw is provided at the top of the oil passage, and the top surface of the screw is parallel to the shaft ring to prevent leakage of lubricating oil.

[0020] Through the above technical solution, the beneficial effects of the utility model are:

[0021] The utility model increases the height of the shaft ring, the height of the seat ring, the outer diameter and the size of the roller, thereby increasing its load, increasing its service life and reducing economic losses. When the utility model is used in conjunction with other bearings, due to the increase in its size, it is not necessary to add a spacer ring between the two bearings, the installation process is simplified, the installation time is saved, and the work efficiency is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a top view of a cone head sliding sleeve modified bearing of the utility model.

[0023] Figure 2 The utility model is a cone head sliding sleeve modified bearing Figure 1 Sectional view at AA.

[0024] Figure 3 The utility model is a schematic diagram of a retainer of a cone head sliding sleeve modified bearing.

[0025] Figure 4 The utility model is a schematic diagram of a roller of a cone head sliding sleeve modified bearing.

[0026] The numbers in the accompanying drawings are: 1 is a seat ring, 2 is a shaft ring, 3 is a roller, 4 is a retaining frame, 5 is a fixing block, 6 is a fixing ring, 7 is a raceway surface, 8 is a raceway, 9 is an oil channel, and 10 is a screw. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0028] like Figure 1 to Figure 4 As shown, a tapered sleeve modified bearing includes a seat ring 1, a retaining frame 4, a shaft ring 2 and a roller 3. The shaft ring 2, the retaining frame 4 and the seat ring 1 are sequentially arranged in a stepped manner from inside to outside and from top to bottom. The seat ring 1, the retaining frame 4 and the shaft ring 2 are detachably connected to facilitate assembly when used.

[0029] The seat ring 1 is an annular body, the inner diameter of the seat ring 1 is 253mm, the upper deviation of the inner diameter is 0.04mm, the lower deviation is 0mm, the outer diameter of the seat ring 1 is 320mm, the upper deviation of the outer diameter is 0mm, the lower deviation is 0.040mm, and the height of the seat ring 1 is 33mm. Compared with the standard tapered bearing 29240, the height and outer diameter of the seat ring 1 are increased, so that the utility model increases the ability to resist axial force and load and increases the service life.

[0030] A raceway surface 7 is inclined on the inner side of the seat ring 1, and the raceway surface 7 is a concave spherical surface. Specifically, the raceway surface 7 is a spherical surface with a radius of 216.5 mm and a point 182 mm above the axis of the seat ring 1 with an upper deviation of 0.03 mm and a lower deviation of 0.40 mm as the sphere center, which plays a role in centering.

[0031] The retaining frame 4 includes a fixing ring 6 and a fixing block 5. A plurality of fixing blocks 5 are arranged around the fixing ring 6. Specifically, the fixing blocks 5 are of a trapezoidal structure and are used to separate the rollers 3 to prevent the rollers 3 from colliding.

[0032] A roller 3 is slidably arranged between every two fixed blocks 5 . The rollers 3 are evenly arranged around the retaining frame 4 to facilitate the movement of the rollers 3 and reduce friction. The side surface of the roller 3 is an outwardly convex spherical surface to facilitate the movement of the rollers 3 on the raceway surface 7 .

[0033] In order to make the roller 3 fit with the seat washer 1 and the shaft washer 2, the size of the roller 3 is increased compared with the roller in the tapered bearing 29240, so that the roller 3 can be used in conjunction with the seat washer 1 and the shaft washer 2.

[0034] The shaft washer 2 is an annular body with an inner diameter of 200mm, an upper deviation of the inner diameter of 0mm, and a lower deviation of 0.030mm. The outer diameter of the shaft washer 2 is 299mm, an upper deviation of the outer diameter of 0mm, and a lower deviation of 0.50mm. The height of the shaft washer 2 is 57mm. Compared with the standard tapered bearing 29240, the height of the shaft washer 2 is increased, which increases the bearing's ability to resist axial force and load. When used in conjunction with other bearings, a spacer ring may not be installed between the two bearings, simplifying the installation steps.

[0035] A circular groove is coaxially cut above the shaft ring 2. The inner diameter of the ring is 267mm, the upper deviation is 0mm, the lower deviation is 1.0mm, the outer diameter of the ring is 299mm, the upper deviation is 0mm, the lower deviation is 0.50mm, and the depth of the circular groove is greater than or equal to 2mm, which is convenient for assembly during use.

[0036] An inwardly recessed annular raceway 8 is provided on the outer side of the shaft ring 2, and the top surface of the raceway 8 is recessed inwardly in an arc shape. The side surface of the roller 3 is matched with the top surface of the raceway 8 and the raceway surface 7 to facilitate the movement of the roller 3. The seat ring 1 and the shaft ring 2 are rollingly connected through the roller 3 to reduce friction.

[0037] Preferably, two oil passages 9 are provided on the shaft ring 2, and the two oil passages 9 are symmetrically distributed along the central axis of the shaft ring 2, so that the lubricating oil can enter the raceway 8 evenly. The oil passage 9 runs through the shaft ring 2 and connects to the raceway 8. Two liquid reservoirs are provided in the middle of the oil passage 9 for storing the lubricating oil. When in use, the lubricating oil in the liquid reservoir will slowly flow into the raceway 8. A screw 10 is provided on the top of the oil passage 9, and the top surface of the screw 10 is parallel to the shaft ring. Lubricating oil is added to the oil passage 9, and the screw 10 is matched with the top thread of the oil passage 9 and installed on the top of the oil passage 9. The top of the oil passage 9 is sealed by the screw 10 to prevent the lubricating oil from leaking. The lubricating oil is stored in the liquid reservoir. When the bearing is in use, the lubricating oil will slowly enter the raceway 9 to reduce friction.

[0038] Preferably, the outer contours of the seat ring 1 and the shaft ring 2 are both provided with chamfers, and the chamfer height is greater than or equal to 2 mm, so as to avoid stress concentration and facilitate installation.

[0039] In actual application, first place the shaft ring 2 on the bearing seat, place the roller 3 between the fixing blocks 5 of the retainer 4, place the retainer 4 and the roller 3 on the seat ring 1, and finally place the shaft ring 2 and the retainer 4 in a close fit and clamp them on the bearing seat. If it is necessary to use with other bearings, there is no need to set a spacer between this application and other bearings, and they can be directly installed adjacent to each other.

[0040] Since the utility model increases the height of the shaft ring 2, the height of the seat ring 1, the outer diameter and the size of the roller 3, the load capacity of the utility model is also increased. The rated load of the utility model is:

[0041] Ca=1170KN

[0042] Coa=4550KN

[0043] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A cone head sliding sleeve modified bearing, characterized in that: The invention comprises a seat ring (1), a retaining frame (4), a shaft ring (2) and a roller (3), wherein the shaft ring (2), the retaining frame (4) and the seat ring (1) are arranged in a stepped manner from inside to outside and from top to bottom, and the seat ring (1), the retaining frame (4) and the shaft ring (2) are detachably connected; The seat ring (1) is an annular body, and a raceway surface (7) is obliquely arranged on the inner side of the seat ring (1), and the raceway surface (7) is a concave spherical surface; The retaining frame (4) comprises a fixing ring (6) and a fixing block (5), and a plurality of fixing blocks (5) are arranged around the circumference of the fixing ring (6); A roller (3) is slidably arranged between each two of the fixed blocks (5), the rollers (3) are evenly arranged around the retaining frame (4), and the side surfaces of the rollers (3) are convex spherical surfaces; The outer side of the shaft ring (2) is provided with an inwardly recessed annular raceway (8), the top surface of the raceway (8) is recessed inwardly in an arc shape, the side surface of the roller (3) is matched with the top surface of the raceway (8) and the raceway surface (7), and the seat ring (1) and the shaft ring (2) are connected in a rolling manner via the roller (3); The shaft ring (2) is provided with a plurality of oil passages (9), and the plurality of oil passages (9) are symmetrically distributed along the central axis of the shaft ring (2); The oil channel (9) passes through the shaft ring (2) and is connected to the raceway (8), and a plurality of liquid storage tanks are arranged in the middle of the oil channel (9).

2. A cone head sliding sleeve modified bearing according to claim 1, characterized in that: The inner diameter of the seat ring (1) is 253 mm, the upper deviation of the inner diameter is 0.04 mm, and the lower deviation is 0 mm. The outer diameter of the seat ring (1) is 320 mm, the upper deviation of the outer diameter is 0 mm, and the lower deviation is 0.040 mm. The height of the seat ring (1) is 33 mm.

3. The cone head sliding sleeve modified bearing according to claim 1, characterized in that: The raceway surface (7) is a spherical surface with a radius of 216.5 mm and a point 182 mm above the axis of the seat ring (1) with an upper deviation of 0.03 mm and a lower deviation of 0.40 mm as the center.

4. The cone head sliding sleeve modified bearing according to claim 1, characterized in that: The fixing block (5) is a trapezoidal structure.

5. The cone head sliding sleeve modified bearing according to claim 1, characterized in that: The shaft ring (2) is an annular body, the inner diameter of the shaft ring (2) is 200 mm, the upper deviation of the inner diameter is 0 mm, and the lower deviation is 0.030 mm; the outer diameter of the shaft ring (2) is 299 mm, the upper deviation of the outer diameter is 0 mm, and the lower deviation is 0.50 mm; the height of the shaft ring (2) is 57 mm.

6. The cone head sliding sleeve modified bearing according to claim 1, characterized in that: The upper plane of the shaft ring (2) is coaxially provided with a circular groove, the inner diameter of the circular groove is 267 mm, the upper deviation of the inner diameter is 0 mm, the lower deviation is 1.0 mm, the outer diameter of the circular groove is 299 mm, the upper deviation of the outer diameter is 0 mm, the lower deviation is 0.50 mm, and the depth of the circular groove is greater than or equal to 2 mm.

7. The cone head sliding sleeve modified bearing according to claim 1, characterized in that: The outer contours of the seat ring (1) and the shaft ring (2) are both provided with chamfers, and the chamfer height is greater than or equal to 2 mm.

8. The cone head sliding sleeve modified bearing according to claim 1, characterized in that: A screw (10) is provided at the top of the oil passage (9), and the top surface of the screw (10) is parallel to the shaft ring (2).

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