A bearing pillar welded retainer washer capable of resisting welding distortion

Abstract

The application discloses a bearing support post welding retainer washer capable of resisting welding deformation, which comprises a washer body, a large reinforcing ring, a small reinforcing ring and a reinforcing structure; the large reinforcing ring is located on the outer circular edge of the side of the washer body facing the support post, and the small reinforcing ring is located on the inner circular edge of the side of the washer body facing the support post; the outer diameter of the large reinforcing ring is equal to the outer diameter of the washer body, and the inner diameter of the small reinforcing ring is equal to the inner diameter of the washer body; and the reinforcing structure is located on the side of the washer body away from the support post. The application is provided with the reinforcing ring and the reinforcing structure on the two sides respectively, the reinforcing ring and the reinforcing structure are distributed alternately on the two sides, the structural strength of the washer is greatly improved, the deformation stress during welding of the support post and the washer can be effectively resisted, the welding deformation of the whole and the local part of the washer is inhibited, the overall flatness of the two side end faces of the support post welding retainer is ensured, the adverse friction between the roller and the washer is greatly reduced, and the service performance and the service life of the support post welding retainer bearing are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of bearing design and manufacturing, and particularly relates to a bearing pillar welded retainer washer capable of resisting welding deformation. BACKGROUND

[0002] The pillar welded retainer is a component for bearings serving under heavy load conditions. After the pillars pass through the hollow rollers, the two ends of the pillars are welded with the washers on both sides to form an integral pillar welded retainer. The welded retainer plays a role in bearing the rollers and constraining the rollers. Compared with ordinary bearing retainers, the pillar welded retainer can greatly reduce the spacing between the rollers and rollers, and more rollers can be installed in a limited space, thus improving the load-carrying capacity of the bearing.

[0003] However, bearings under heavy load conditions will be subjected to large load and high frequency radial impact. Therefore, the pillar welded retainer often adopts a welding method to connect the pillars and the washers on both sides. Welding can improve the bonding strength between the pillars and the retainer, so that it can still maintain stable connection under the action of impact and protect the service performance of the bearing. However, the welding process will inevitably introduce welding stress, which will inevitably cause welding deformation. In addition, with the development of equipment such as mining machinery, higher requirements are put forward for the load of the pillar welded retainer bearing. The bearing including the pillar welded retainer needs to bear higher load, so higher requirements are put forward for the welding strength of the pillar welded retainer. The above requirements require deeper and wider welding seams to support, but this brings the problem of greater welding deformation. That is, when the pillars of the pillar welded retainer are welded with the washers on both sides, the whole or part of the washer is deformed, which causes the flatness of the washers on both sides of the pillar welded retainer to deteriorate, causing the retainer and the roller to produce adverse friction, affecting the use performance of the bearing.

[0004] Among the problems of the pillar welded retainer, the existing patents mainly improve the welding strength. For example, Chinese patent CN201620116985.9 mentions a shallow welding pool rolling mill bearing retainer. The patent sets a welding chamfer on the pillar, sets the depth of the welding pool to 3-4 mm, and sets the slope of the welding pool to 45-50°. This method can improve the welding efficiency, reduce the defects such as bubbles and shrinkage holes generated by welding, improve the load-carrying capacity of the pillar, and at the same time, save the amount of welding rod used. However, this patent does not focus on the deformation problem of the retainers on both sides of the washer during welding.

[0005] In addition, a height difference is formed at the assembly position of the gasket and the pillar to fill the solder, which can increase the welding strength. As disclosed in Chinese Patent CN202310695567.4, the welding end of the pillar is designed to be lower than the gasket by 2.2-3.0 mm, and the through hole on the gasket is designed to have an angle of 45-50° and a chamfer with a height of 4-4.5 mm. The above design increases the welding contact area of the pillar and the gasket, and improves the strength and reliability of the welding part. However, the above patent does not consider the welding deformation of the gaskets on both sides of the retainer during welding.

[0006] In addition to the above patents, some studies have optimized welding parameters to improve the bonding strength of the pillar and the gasket to improve the welding strength.

[0007] In summary, the main problem considered in the existing bearing pillar retainer welding is how to strengthen the welding strength, ignoring the welding deformation of the gaskets on both sides of the retainer during welding. Welding deformation can cause adverse friction between the gasket and the roller, affecting the performance of the bearing and reducing the service life of the bearing. SUMMARY

[0008] The present application aims to provide a bearing pillar welded retainer gasket that can resist welding deformation. By providing a deformation-resistant reinforcing structure on the inner and outer sides of the gaskets on both sides of the welded pillar retainer, the overall deformation and local deformation of the pillar welded retainer during welding are resisted, and adverse friction between the gasket and the roller is avoided, ensuring the performance of the bearing.

[0009] To achieve the above goal, the technical solutions of the present application are as follows:

[0010] A bearing pillar welded retainer gasket that can resist welding deformation, comprising a gasket body, a large reinforcing ring, a small reinforcing ring, and a reinforcing structure.

[0011] The large reinforcing ring is located on the outer circular edge of the gasket body towards the pillar side, and the small reinforcing ring is located on the inner circular edge of the gasket body towards the pillar side. The outer diameter of the large reinforcing ring is equal to the outer diameter of the gasket body, and the inner diameter of the small reinforcing ring is equal to the inner diameter of the gasket body. The reinforcing structure is located on the side of the gasket body away from the pillar.

[0012] Further, the cross section of the large reinforcing ring and the small reinforcing ring is rectangular, and the ring width is 10-25 mm and the ring height is 4-8 mm.

[0013] Further, when the distance between the pillar through holes on the gasket is large, the reinforcing structure is arranged as a hemispherical reinforcing mound, the reinforcing mound is concentric with the pillar through holes on the gasket, the pillar through holes penetrate the reinforcing mound, and the diameter of the circle formed by the reinforcing mound and the gasket is larger than the distance between the large reinforcing ring and the small reinforcing ring, and the reinforcing mound is arranged in a staggered manner on both sides of the gasket. The hemispherical reinforcing mound is 8-15 mm higher than the plane of the gasket.

[0014] Further, the connecting ribs are arranged between the hemispherical reinforcing mounds, the connecting ribs are in the shape of a circular arc, the cross section of the connecting rib is a semicircle, and the diameter is 3-5 mm.

[0015] Further, when the distance between the pillar through holes on the gasket is small, the reinforcing structure is arranged as a frustum reinforcing ring, the frustum reinforcing ring completely covers the pillar through holes which are uniformly distributed along the circumference, the pillar through holes are enveloped in the middle of the frustum reinforcing ring, and the pillar through holes penetrate the frustum reinforcing ring; the cross section of the frustum reinforcing ring is in the shape of a cone, the length of the lower base of the cone is larger than the distance between the large reinforcing ring and the small reinforcing ring, and the frustum reinforcing ring is arranged in a staggered manner on both sides of the gasket. The length of the upper base of the cone is 20-50 mm larger than the diameter of the pillar through hole, and the height of the cone is 8-15 mm.

[0016] Further, the pillar penetrates the rollers and is assembled with the pillar through holes on the left gasket and the right gasket, the welding position of the pillar and the gasket converges on the top of the reinforcing structure to form a welding spot, and the rollers contact the large reinforcing ring and the small reinforcing ring of the gasket.

[0017] The present application has the following breakthroughs and beneficial effects:

[0018] The present application has the following breakthroughs and beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a side view of the side of the present application facing the pillar.

[0020] Figure 2 It is a side view of the side of the present application facing away from the pillar.

[0021] Figure 3 It is an A-A cross-sectional view of Figure 2 .

[0022] Figure 4 It is a B-B cross-sectional view of Figure 2 .

[0023] Figure 5 A side view of the back pillar side of another gasket of the present application.

[0024] Figure 6 A-A sectional view of Figure 5

[0025] Figure 7 A sectional view of the pillar welded cage and roller assembly in the present application.

[0026] In the figure: 1, large reinforcing ring; 2, small reinforcing ring; 3, pillar through hole; 4, reinforcing pile; 5, connecting rib; 6, conical reinforcing ring; 7, right gasket; 8, left gasket; 9, welding point; 10, pillar; 11, roller. DETAILED DESCRIPTION

[0027] In order to further help understand a detachable pillar cage for a large heavy load bearing, the present application will be described in detail below in conjunction with the examples.

[0028] Example 1 (when the distance between the pillar through holes on the gasket is large):

[0029] A bearing pillar welded cage gasket capable of resisting welding deformation, comprising a gasket body, a large reinforcing ring 1, a small reinforcing ring 2 and a reinforcing structure;

[0030] The large reinforcing ring 1 is located on the outer circular edge of the gasket body towards the pillar 10 side, and the small reinforcing ring 2 is located on the inner circular edge of the gasket body towards the pillar 10 side; the outer diameter of the large reinforcing ring 1 is equal to the outer diameter of the gasket body, and the inner diameter of the small reinforcing ring 2 is equal to the inner diameter of the gasket body; the reinforcing structure is located on the side of the gasket body away from the pillar 10.

[0031] Further, the cross section of the large reinforcing ring 1 and the small reinforcing ring 2 is rectangular, the ring width is 15 mm, and the ring height is 5 mm.

[0032] Further, the reinforcing structure is provided as a hemispherical reinforcing pile, the reinforcing pile 4 is concentric with the pillar through hole 3 on the gasket, the pillar through hole 3 penetrates the reinforcing pile 4, the diameter of the circle formed by the reinforcing pile 4 and the gasket is greater than the distance between the large reinforcing ring 1 and the small reinforcing ring 2, and the reinforcing pile 4 and the large reinforcing ring 1 and the small reinforcing ring 2 are staggered on both sides of the gasket. The hemispherical reinforcing pile is 10 mm higher than the gasket plane.

[0033] Further, connecting ribs 5 are provided between the hemispherical reinforcing piles, the connecting ribs 5 are circular arc shapes, the cross section of the connecting ribs 5 is a semicircle, and the diameter is 4 mm.

[0034] ​Further, the pillar 10 passes through the roller 11 and is assembled with the pillar through hole 3 on the left washer 8 and the right washer 7, the welding position of the pillar 10 and the washer converges on the top of the reinforcing structure to form the welding spot 9; the roller 11 contacts the large reinforcing ring 1 and the small reinforcing ring 2 of the washer.

[0035] Embodiment 2 (small distance between the pillar through hole on the washer):

[0036] A bearing pillar welded retainer washer capable of resisting welding deformation, comprising a washer body, a large reinforcing ring 1, a small reinforcing ring 2 and a reinforcing structure;

[0037] The large reinforcing ring 1 is located on the outer circular edge of the washer body on the side facing the pillar 10, and the small reinforcing ring 2 is located on the inner circular edge of the washer body on the side facing the pillar 10; the outer diameter of the large reinforcing ring 1 is equal to the outer diameter of the washer body, and the inner diameter of the small reinforcing ring 2 is equal to the inner diameter of the washer body; the reinforcing structure is located on the side of the washer body away from the pillar 10.

[0038] Further, the cross section of the large reinforcing ring 1 and the small reinforcing ring 2 is rectangular, the ring width is 15 mm, and the ring height is 5 mm.

[0039] Further, the reinforcing structure is set as a frustum reinforcing ring 6, the frustum reinforcing ring 6 completely covers the pillar through hole 3 uniformly distributed along the circumference, the pillar through hole 3 is enveloped in the middle of the frustum reinforcing ring 6, and the pillar through hole 3 passes through the frustum reinforcing ring 6; the cross section of the frustum reinforcing ring 6 is conical, the length of the lower base of the frustum is greater than the distance between the large reinforcing ring 1 and the small reinforcing ring 2, and the frustum reinforcing ring 6 and the large reinforcing ring 1 and the small reinforcing ring 2 are staggered on both sides of the washer. The length of the upper base of the frustum is 35 mm greater than the diameter of the pillar through hole 3, and the height of the frustum is 10 mm.

[0040] The above shows the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A bearing support welded cage washer resistant to welding deformation, characterized in that: It includes the washer body, the large reinforcing ring (1), the small reinforcing ring (2), and the reinforcing structure; The large reinforcing ring (1) is located on the outer edge of the washer body facing the support (10), and the small reinforcing ring (2) is located on the inner edge of the washer body facing the support (10). The outer diameter of the large reinforcing ring (1) is the same as the outer diameter of the washer body, and the inner diameter of the small reinforcing ring (2) is the same as the inner diameter of the washer body. The reinforcing structure is located on the side of the washer body facing away from the support (10).

2. The bearing support welded cage washer resistant to welding deformation according to claim 1, characterized in that: The cross-sections of the large reinforcing ring (1) and the small reinforcing ring (2) are both rectangular, with a ring width of 10~25 mm and a ring height of 4~8 mm.

3. The bearing support welded cage washer resistant to welding deformation according to claim 1, characterized in that: When the spacing of the support through holes (3) on the washer is large, the reinforcing structure is set as a hemispherical reinforcing stack. The reinforcing stack (4) is concentric with the support through holes (3) on the washer. The support through holes (3) penetrate the reinforcing stack (4). The diameter of the circle formed by the reinforcing stack (4) and the washer is greater than the spacing between the large reinforcing ring (1) and the small reinforcing ring (2). They are staggered on both sides of the washer. The spherical reinforcing stack is 8~15 mm higher than the plane of the washer.

4. The bearing support welded cage washer resistant to welding deformation according to claim 3, characterized in that: Connecting ribs (5) are provided between the hemispherical reinforcing stacks. The connecting ribs (5) are arc-shaped, and the cross-section of the connecting ribs (5) is semi-circular with a diameter of 3~5 mm.

5. A bearing support welded cage washer resistant to welding deformation according to claim 1, characterized in that: When the spacing of the support through holes (3) on the washer is small, the reinforcing structure is set as a frustum reinforcing ring (6). The frustum reinforcing ring (6) completely covers the support through holes (3) evenly distributed along the circumference, and the support through holes (3) are enveloped in the middle of the frustum reinforcing ring (6). The support through holes (3) pass through the frustum reinforcing ring (6). The cross section of the frustum reinforcing ring (6) is conical. The length of the bottom of the frustum is greater than the spacing between the large reinforcing ring (1) and the small reinforcing ring (2), forming an alternating arrangement on both sides of the washer. The length of the bottom of the frustum is 20~50 mm larger than the diameter of the support through hole (3), and the height of the frustum is 8~15 mm.

6. The bearing support welded cage washer resistant to welding deformation according to claim 1, characterized in that: The support (10) passes through the roller (11) and is assembled with the support through hole (3) on the left washer (8) and the right washer (7) respectively. The welding position of the support (10) and the washer intersects on the top of the reinforcing structure to form a weld point (9). The roller (11) contacts the large reinforcing ring (1) and the small reinforcing ring (2) of the washer.

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