Spring ring type retainer, thrust roller bearing and assembling method

Abstract

The invention belongs to the technical field of bearing assemblies, and particularly relates to a spring ring type retainer, a thrust roller bearing and an assembling method. The spring ring type retainer comprises an annular retainer body, the retainer body is of an integral structure, a plurality of pockets used for assembling rollers are annularly and evenly formed in the retainer body, a fracture is formed in the retainer body, and the fracture is located in a retainer beam between every two adjacent pockets. The retainer body can deform under the action of external force, so that the two ends of the fracture are pulled close to each other and folded. According to the spring ring type retainer disclosed by the invention, the retainer body is provided with the fracture, so that the retainer can be quickly assembled and disassembled, and the maintenance and inspection of a bearing are facilitated. And the retainer is of an integral structure, the structure is simple, production is convenient, and the assembly space is small.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of bearing assembly, and particularly relates to a spring ring type retainer and thrust roller bearing and an assembling method. BACKGROUND

[0002] If the thrust roller bearing is full of rollers, a large amount of friction heat will be caused during high-speed operation, and then the bearing will be invalid. Therefore, the retainer needs to be assembled. However, the traditional retainer type thrust roller bearing has a complex structure, large assembly space and is difficult to disassemble and overhaul. SUMMARY

[0003] In view of the defects in the prior art, the application provides a spring ring type retainer and thrust roller bearing and an assembling method, which are mainly applied to the case of small space, low speed and single-direction axial thrust.

[0004] To achieve the above object, the application adopts the technical scheme of a spring ring type retainer, which comprises an annular retainer body, the retainer body is of an integral structure, a plurality of pockets for assembling rollers are uniformly arranged on the retainer body along the annular direction, the retainer body has a fracture, the fracture is located on a retainer beam between two adjacent pockets, and the retainer body can be deformed under external force to pull the two ends of the fracture close to each other and fold.

[0005] Further, the retainer is made of metal.

[0006] Further, the center line of the fracture is arranged along the radial direction of the retainer body.

[0007] Further, the fracture is located in the middle of the retainer beam.

[0008] The thrust roller bearing with the spring ring type retainer comprises a retainer, a shaft ring and the above-mentioned retainer, the retainer is assembled with rollers, and the retainer and the rollers are assembled between the retainer and the shaft ring.

[0009] Further, the inner edge of the upper surface of the retainer is provided with an annular retainer race groove, the inner side ring surface of the retainer race groove is matched with the outer peripheral surface of the retainer, the outer edge of the shaft ring is provided with an annular shaft ring race groove, the outer side ring surface of the shaft ring race groove is matched with the inner peripheral surface of the retainer, and the retainer and the rollers are assembled between the retainer race groove and the shaft ring race groove.

[0010] Further, the retainer is assembled between the retainer and the shaft ring in a free state without deformation or a slightly compressed state in which the two ends of the fracture are pulled close to each other.

[0011] The assembling method of the thrust roller bearing with the spring ring type retainer, the race is fixed, the outer diameter of the retainer is reduced by pulling the two ends of the retainer fracture to each other through external force, the retainer with the reduced outer diameter is installed into the raceway groove of the race, the axial position of the retainer is released, the rollers are assembled into the pockets of the retainer, and the collar is assembled above the retainer and the rollers.

[0012] The spring ring type retainer of the application can realize quick assembly and disassembly of the retainer through the fracture arranged on the retainer body, and the retainer is of integral structure, simple structure, convenient production and small assembly space. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a perspective view of the spring ring type retainer. Figure 2 It is a top view of the spring ring type retainer. Figure 3 It is Figure 2 It is an enlarged view of the fracture at A. Figure 4 It is a structure schematic view of the thrust roller bearing with the spring ring type retainer. Figure 5 It is an assembling flow chart of the thrust roller bearing with the spring ring type retainer. In the figure: 1, fracture, 2, pocket, 3, retainer beam. 01, retainer, 02, race, 03, collar, 04, roller. DETAILED DESCRIPTION

[0014] In order to make the structure and function of the application clearer, the technical solutions in the embodiments of the application will be described clearly and completely below by combining the drawings in the embodiments of the application.

[0015] Referring to the drawings, Figures 1-5 The spring ring type retainer comprises an annular retainer body, the retainer body is of integral structure, a plurality of pockets 2 for assembling rollers are uniformly arranged on the end face of the retainer body along the annular direction, the pockets 2 are penetrated through the retainer along the axial direction, the retainer body has a fracture 1, the fracture 1 is located on the retainer beam 3 between two adjacent pockets 2, the center line of the fracture 1 is arranged along the radial direction of the retainer body, and the retainer body can be deformed under the action of external force to pull the two ends of the fracture 1 to each other and close.

[0016] The actual size of the fracture is determined according to the working condition requirement and product specification. Figures 2-3 As shown in the drawings, the outer diameter of the retainer body in the embodiment is 555 mm, the inner diameter is 502 mm, and the width of the fracture is 10 mm.

[0017] In order to ensure the strength of the retainer beam at the fracture 1, the fracture 1 is located in the middle of the retainer beam 3.

[0018] The retainer can be made of metal material of QstE380TM or HR380F, and the metal has ductility to meet the deformation requirement of the retainer.

[0019] Further, the embodiment provides a thrust roller bearing with a spring ring type retainer, which comprises a race 02, a shaft ring 03 and the above-mentioned retainer 01, the retainer 01 is internally assembled with rollers 04, and the retainer 01 and the rollers 04 are assembled between the race 02 and the shaft ring 03.

[0020] An annular raceway groove is arranged on the inner edge of the upper surface of the race 02, the inner side ring surface of the raceway groove is matched with the outer peripheral surface of the retainer, the outer edge of the shaft ring 03 is provided with an annular shaft ring raceway groove, and the outer side ring surface of the shaft ring raceway groove is matched with the inner peripheral surface of the retainer, and the retainer 01 and the rollers 04 are assembled between the raceway groove and the shaft ring raceway groove.

[0021] In order to ensure the axial position of the retainer 01, the retainer 01 is assembled between the race 02 and the shaft ring 03 in a compressed state that the two ends of the fracture are pulled close to each other, so that the retainer 01 is slightly interference-fitted with the race 02.

[0022] In another embodiment, the retainer 01 is assembled between the race and the shaft ring in a free state without deformation.

[0023] The assembling method of the thrust roller bearing with the spring ring type retainer, the race is fixed, the spring type retainer has a fracture, the two ends of the retainer fracture are pulled close to each other by a tool to reduce the outer diameter of the retainer, then the retainer is installed into the raceway groove of the race, the axial position of the retainer is fixed, the rollers are assembled into the pockets of the retainer, and the shaft ring is covered above the retainer and the rollers.

[0024] It should be noted that the parts not described in the present application are prior art.

[0025] The above-mentioned is only the best embodiment of the present application. Apparently, the present application is not limited to the above-mentioned embodiment, and there are many variations. All the variations directly derived or thought by those skilled in the art from the disclosure of the present application should be considered as the protection scope of the present application.

Claims

1. A spring coil type cage, characterized in that: The cage includes an annular cage body, which is an integral structure. The cage body has several pockets evenly arranged along the annular shape for mounting rollers. The cage body has a break located on the cage beam between two adjacent pockets. The cage body can deform under external force, causing the two ends of the break to be pulled closer together and closed.

2. The spring coil retainer according to claim 1, characterized in that: The centerline of the fracture is arranged radially along the cage body.

3. The spring coil retainer according to claim 1, characterized in that: The fracture is located in the middle of the retaining beam.

4. The spring coil retainer according to claim 1, characterized in that: The cage is made of metal.

5. A thrust roller bearing with a spring ring cage, characterized in that: It includes a seat ring, a shaft ring, and a cage as described in any one of claims 1-4, wherein rollers are fitted inside the cage, and the cage and rollers are fitted between the seat ring and the shaft ring.

6. The thrust roller bearing with a spring-coil cage according to claim 5, characterized in that: The inner edge of the upper surface of the seat ring is provided with an annular seat ring raceway groove. The inner annular surface of the seat ring raceway groove mates with the outer peripheral surface of the cage. The outer edge of the shaft ring is provided with an annular shaft ring raceway groove. The outer annular surface of the shaft ring raceway groove mates with the inner peripheral surface of the cage. The bottom of the shaft ring raceway groove contacts the rolling surface of the roller. The cage and the roller are assembled between the seat ring raceway groove and the shaft ring raceway groove.

7. The thrust roller bearing with a spring-coil cage according to claim 5, characterized in that: The cage is assembled between the seat ring and the shaft ring in a free state without deformation or in a slightly compressed state where the two ends of the fracture are pulled close to each other.

8. The assembly method of the thrust roller bearing with a spring ring cage as described in claim 5, characterized in that: The cage is fixed, and the two ends of the cage break are pulled closer together by external force to reduce the outer diameter of the cage. The cage with the reduced outer diameter is installed into the raceway groove of the cage. The cage is released and its axial position is fixed. The roller is assembled into the pocket of the cage. The shaft ring is assembled above the cage and the roller.

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