CN214465575U - Single-row outer-ring-free bearing with side clamp spring - Google Patents

Abstract

The utility model relates to a single-row no outer lane bearing with side jump ring, including the inner circle, set up round outer raceway on the inner circle, arrange a plurality of cylindrical roller in the outer raceway; the two side snap springs are respectively positioned at two sides of the cylindrical roller; the side clamp spring is suitable for being clamped with the inner hole of the gear and is blocked on the end face of the cylindrical roller so as to limit the axial movement of the cylindrical roller. It has collocated the side jump ring of two brand-new designs, and the joint that the side jump ring can be stable is at the planetary gear inner wall to keep off to connect cylindrical roller, make planetary gear can carry out high-speed stable operation on the planet carrier, and possess stronger axial impact force.

Description

Single-row outer-ring-free bearing with side clamp spring

Technical Field

The utility model relates to a bearing field, concretely relates to take single-row of side jump ring to do not have outer lane bearing.

Background

Prior patent application, patent application No.: 2021203654718, patent application name: the outer ring-free bearing, the planetary reduction mechanism and the planetary gear installation method are characterized in that in the outer ring-free bearing applied in the prior patent, the outer ring-free bearing is installed in the inner ring of the gear in a combined mode of a clamp spring and two retainer rings.

The no outer lane bearing of prior application belongs to the biserial bearing, when arranging with the gear, realizes the complex through "jump ring + two retaining rings", if planetary gear need install through single no outer lane bearing, just need take "two jump rings + two retaining rings" and realize having assembled, promptly, cylindrical roller one side sets up a jump ring and retaining ring, and the opposite side also is a jump ring + retaining ring.

The applicant currently develops a single-row outer-ring-free bearing, and the gear needs to be stably and reliably mounted on the cantilever beam through the single-row outer-ring-free bearing.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, and the single-row outer-ring-free bearing with the side clamp spring is provided to solve the problem that a planetary gear cannot be installed on a planet carrier through the single-row outer-ring-free bearing in a planetary reducer.

The utility model provides a technical scheme that its technical problem adopted is:

the single-row outer ring-free bearing with the side clamp spring comprises

The inner ring is provided with a circle of outer raceway, and a plurality of cylindrical rollers are arranged in the outer raceway;

the two side snap springs are respectively positioned at two sides of the cylindrical roller;

the side clamp spring is suitable for being clamped with the inner hole of the gear and is blocked on the end face of the cylindrical roller so as to limit the axial movement of the cylindrical roller.

Further, the side clamp spring comprises a clamp spring body and a retainer ring body, the clamp spring body and the retainer ring body are both of C-shaped structures, and the retainer ring body is integrally formed on the left side or the right side of the clamp spring body;

the radial dimension of jump ring body is greater than the radial dimension of retaining ring body to make the outside joint portion that is used for with the downthehole joint of gear that forms of jump ring body, a side end face that deviates from the retaining ring body on the jump ring body forms and is used for connecing the fitting surface with cylinder roller complex fender.

Further, an included angle alpha is formed between the retainer ring body and the clamp spring body, and the included angle alpha is 70-80 degrees.

Furthermore, the blocking and connecting matching surface of the clamp spring body is a concave conical surface, and the end part of the cylindrical roller forms a contact curved surface to be in rolling contact matching with the concave conical surface.

Further, the curvature radius R of the contact curved surface, the diameter D of the cylindrical roller; and R is (8-12) D.

The bearing device further comprises an outer sleeve, wherein a bearing hole and a clamp spring hole are formed in the outer sleeve;

the inner ring and each cylindrical roller are positioned in the bearing hole, and the two side clamp springs are clamped in the clamp spring holes.

Furthermore, the side clamp spring is made of spring steel.

The utility model has the advantages that:

the utility model provides a single-row does not have outer lane bearing, its side jump ring of having collocated two brand-new designs, the joint that the side jump ring can be stable is at the planetary gear inner wall to keep off to cylindrical roller and connect, make planetary gear can carry out high-speed stable operation on the planet carrier, and possess stronger axial impact force.

The utility model discloses a single-row does not have outer lane bearing, simple to operate is swift, save the outer lane, and the cost is reduced.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

FIG. 1 is a schematic view of a single row of outer race free bearings packaged within a housing;

FIG. 2 is a schematic view of a side clamp spring;

FIG. 3 is a schematic view of a cylindrical roller;

FIG. 4 is an assembly view of the planet gears with a single row of outer race free bearings;

2, a side clamp spring 21, a clamp spring body 22 and a retainer ring body;

31. an inner ring 32, a cylindrical roller 33 and an outer sleeve;

4. planet gear, 41, side draw-in groove.

Detailed Description

The invention will now be further described with reference to the accompanying drawings. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.

As shown in figures 1 to 3, a single-row outer-ring-free bearing with side clamp springs comprises

The roller bearing comprises an inner ring 31, wherein a circle of outer raceway is formed in the inner ring 31, and a plurality of cylindrical rollers 32 are arranged in the outer raceway;

the two side clamp springs 2 are respectively positioned at two sides of the cylindrical roller 32;

the side clamp spring 2 is suitable for being clamped with an inner hole of the gear and is blocked on the end face of the cylindrical roller 32 so as to limit the axial movement of the cylindrical roller 32.

Specifically, as an optional implementation manner in this embodiment, as shown in fig. 2, the side-edge clamp spring 2 includes a clamp spring body 21 and a retainer ring body 22, the clamp spring body 21 and the retainer ring body 22 are both in a C-shaped structure, and the retainer ring body 22 is integrally formed on the left side or the right side of the clamp spring body 21;

the radial dimension of jump ring body 21 is greater than the radial dimension of retaining ring body 22 to make the outside joint portion that is used for with the downthehole joint of gear that forms of jump ring body 21, a side terminal surface that deviates from retaining ring body 22 on the jump ring body 21 forms and is used for contacting the fitting surface with cylindrical roller 32 complex fender.

Specifically, as an optional implementation manner in this embodiment, an included angle α is formed between the retainer ring body 22 and the circlip body 21, and the included angle α is 70 to 80 °.

The existence of the included angle alpha can ensure that the retainer ring body 22 can be more stably tensioned in the axial direction of the planetary gear 4 after being clamped with the clamping groove of the planetary gear 4, and the side clamp spring 2 is prevented from being loosened in the axial direction.

Specifically, as an optional implementation manner in this embodiment, the blocking matching surface of the snap spring body 21 is a concave conical surface, and the end of the cylindrical roller 32 forms a contact curved surface to be in rolling contact with the concave conical surface.

The concave conical surface is matched with a contact curved surface on the cylindrical roller 32, so that the contact stress between the side clamp spring 2 and the cylindrical roller 32 can be reduced, and the service life of the side clamp spring 2 is prolonged.

Specifically, as an optional implementation manner in this embodiment, the radius of curvature R of the contact curved surface, the diameter D of the cylindrical roller 32; and R is (8-12) D.

R is preferably 10 times the diameter D of the cylindrical roller 3232.

Specifically, as an optional implementation manner in this embodiment, the device further includes an outer sleeve 33, and a bearing hole and a clamp spring hole are formed in the outer sleeve 33;

the inner ring 31 and each cylindrical roller 32 are located in the bearing hole, and the two side clamp springs 2 are clamped in the clamp spring holes.

The outer sleeve 33 is mainly used for packaging the outer-ring-free bearing, the bearing can be packed and transported after the outer sleeve 33 is sleeved, the C-shaped side clamp spring 2 is tightly tensioned in the clamp spring hole of the outer sleeve 33, and the diameter of the clamp spring hole is increased to be larger than that of the bearing hole due to the fact that the side clamp spring 2 is a step clamp spring and the free outer diameter of the step clamp spring is large, and therefore tensioning force borne by the outer sleeve 33 is reduced.

In this embodiment, the outer casing 33 is made of a plastic material, which can reduce the packaging cost.

Specifically, as an optional implementation manner in this embodiment, the side-edge clamp spring 2 is made of spring steel.

As shown in fig. 4, two side draw-in grooves 41 are seted up to 4 holes of planetary gear, the single-row does not have outer lane bearing and installs on the cantilever beam of planet carrier, two side jump rings 2 and planetary gear 4's side draw-in groove 41 looks joint, each cylindrical roller 32 is restricted between two side jump rings 2, inner circle 31 is restricted by an elasticity jump ring on the cantilever beam, prevent that inner circle 31 from moving on the cantilever beam, after planetary gear 4 is restricted axial displacement, planetary gear 4 is rotatory to drive two side jump rings 2 and is rotatory together, because the wearability and the shock resistance that side jump ring 2 possessed, make planetary gear 4 can high-speed stable operation when the operation, planetary gear 4 has been realized installing on the planet carrier through the single-row does not have outer lane bearing.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (7)

1. A single-row outer ring-free bearing with a side clamp spring is characterized by comprising

The inner ring is provided with a circle of outer raceway, and a plurality of cylindrical rollers are arranged in the outer raceway;

the two side snap springs are respectively positioned at two sides of the cylindrical roller;

the side clamp spring is suitable for being clamped with the inner hole of the gear and is blocked on the end face of the cylindrical roller so as to limit the axial movement of the cylindrical roller.

2. The single-row outer-ring-free bearing with the side clamp springs as claimed in claim 1,

the side clamp spring comprises a clamp spring body and a retainer ring body, the clamp spring body and the retainer ring body are both of C-shaped structures, and the retainer ring body is integrally formed on the left side or the right side of the clamp spring body;

the radial dimension of jump ring body is greater than the radial dimension of retaining ring body to make the outside joint portion that is used for with the downthehole joint of gear that forms of jump ring body, a side end face that deviates from the retaining ring body on the jump ring body forms and is used for connecing the fitting surface with cylinder roller complex fender.

3. The single-row outer-ring-free bearing with the side clamp springs as claimed in claim 2,

an included angle alpha is formed between the retainer ring body and the clamp spring body, and the included angle alpha is 70-80 degrees.

4. The single-row outer-ring-free bearing with the side clamp springs as claimed in claim 2,

the blocking and connecting matching surface of the clamp spring body is an inner concave conical surface, and the end part of the cylindrical roller forms a contact curved surface to be in rolling contact matching with the inner concave conical surface.

5. The single-row outer-ring-free bearing with the side clamp springs as claimed in claim 4,

the curvature radius R of the contact curved surface and the diameter D of the cylindrical roller; and R is (8-12) D.

6. The single-row outer-ring-free bearing with the side clamp springs as claimed in claim 2, further comprising an outer sleeve, wherein bearing holes and clamp spring holes are formed in the outer sleeve;

the inner ring and each cylindrical roller are positioned in the bearing hole, and the two side clamp springs are clamped in the clamp spring holes.

7. The single-row outer-ring-free bearing with the side clamp springs as claimed in claim 2, wherein the side clamp springs are made of spring steel.

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