CN214118750U

CN214118750U - Double-layer shaft sleeve

Info

Publication number: CN214118750U
Application number: CN202023022287.8U
Authority: CN
Inventors: 何鸿斌; 马志伟; 高文娟
Original assignee: Hefei Bolin Advanced Materials Co ltd
Current assignee: Hefei Bolin Advanced Materials Co ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-09-03
Anticipated expiration: 2030-12-14

Abstract

The utility model provides a double-layer shaft sleeve, which comprises an outer shaft sleeve and an inner core sleeve coaxially sleeved in the outer shaft sleeve, wherein the outer wall of the outer shaft sleeve is coaxially provided with an outer oil groove, the inner wall of the outer shaft sleeve is coaxially provided with an inner oil groove, the outer oil groove and the inner oil groove are connected and communicated through an oil filling hole, the inner core sleeve is provided with an oil filling hole communicated with the inner oil groove, and the inner wall of the inner core sleeve is uniformly provided with a plurality of oil storage holes; the utility model discloses it is two-layer with the inner core cover to divide into outer axle sleeve, can set firmly the inner core cover in outer axle sleeve after putting into oil storage cave processing, on the one hand, carry out external processing outside being independent of outer axle sleeve with the oil storage cave, the processing mode that makes the oil storage cave has more the flexibility, and improve production efficiency, on the other hand, the restriction to oil storage cave shape structure has been released, the oil storage cave can be regular circular, the rhombus, rectangle etc., also can be 8 font oil grooves, fishbone form oil groove etc., provide multiple possibility for the oil storage cave.

Description

Double-layer shaft sleeve

Technical Field

The utility model relates to a lubricated field of bearing, concretely relates to double-deck axle sleeve.

Background

The shaft sleeve is a component of a bearing, the bearing is used as an important part matched with a rotating shaft and is widely applied to a plurality of mechanical devices, in order to ensure good lubrication between the bearing and the rotating shaft, an oil storage groove and an oil hole communicated with an inner hole are usually processed on the excircle of the shaft sleeve of the bearing, lubricating oil is injected into the oil storage groove and enters the inner hole of the shaft sleeve through the oil hole, and the lubricating oil is stored and distributed through a plurality of oil storage holes in the inner wall of the shaft sleeve to lubricate the rotating shaft.

At present, the processing methods of shaft sleeve oil storage holes on the market are generally two types: one is to make a special cutter to machine and shape; one is formed by rolling a convex structure which is complementary with the oil storage hole on the shaft; wherein, first processing method, the cutter is worn and torn easily, and the cost is higher, and is inefficient, and second kind processing method step is loaded down with trivial details, need through the shaping of relapseing the roll-in many times, and is higher to equipment required precision, consequently, the utility model discloses it is necessary to provide a flexible double-deck axle sleeve of oil storage cave processing.

SUMMERY OF THE UTILITY MODEL

For solving prior art's not enough, the utility model aims at providing a double-deck axle sleeve, it divide into outer axle sleeve and inner core cover two-layerly, can set firmly the inner core cover in outer axle sleeve after putting into oil storage cave processing again on the inner core cover, makes the processing mode in oil storage cave more the flexibility on the one hand, and on the other hand has been opened the restriction to oil storage cave shape structure, provides multiple possibility for the oil storage cave.

In order to achieve the technical purpose, the utility model adopts the following technical scheme.

The utility model provides a double-deck axle sleeve, includes outer axle sleeve, interior oil groove has been seted up to the inner wall of outer axle sleeve, and the oil filler point with interior oil groove switch-on is seted up to the outer wall of outer axle sleeve, the coaxial inner core cover that has set firmly in the outer axle sleeve, set up the inlet port with interior oil groove switch-on the inner core cover, the oil storage cave has been seted up to the inside of inner core cover.

As a further improvement of the utility model, the inner oil groove is of an annular groove structure.

As a further improvement, the outside of outer axle sleeve set up the outer oil groove that is the ring channel structure, put through each other through the oil filler point between outer oil groove and the interior oil groove.

As a further improvement of the utility model, at least two oil holes are arranged along the circumferential direction of the outer oil groove;

at least two oil inlet holes are formed in the circumferential direction of the outer oil groove; the lubricating grease filling device has the advantages that the lubricating grease filling device is provided with the plurality of oil filling holes and the oil inlet holes, and the lubricating grease filling efficiency into the oil storage holes can be improved.

As a further improvement of the utility model, the inner wall of the inner core sleeve is at least provided with two oil storage holes; the significance lies in that the oil storage capacity of the oil storage hole is improved.

As a further improvement of the utility model, the whole area of the oil storage hole accounts for 15 to 25 percent of the surface area of the inner wall of the inner core sleeve; the lubricating grease has the significance that the shaft sleeve bearing can be lubricated for a long time by supplementing the lubricating grease once;

as a further improvement of the utility model, the inner wall of the inner core sleeve is coated with an antifriction and wear-resistant layer for reducing the friction coefficient and improving the wear resistance; the inner core sleeve has the advantages that the friction coefficient of the inner wall of the inner core sleeve can be effectively reduced and the wear resistance of the inner wall of the inner core sleeve can be improved by the antifriction wear-resistant layer arranged on the inner wall of the inner core sleeve, so that the service life of the inner core sleeve is prolonged.

Compared with the prior art, the utility model beneficial effect lie in:

1. the utility model discloses divide into outer axle sleeve and inner core cover two-layerly, can set firmly the inner core cover in the outer axle sleeve after putting into the processing of oil storage cave, on the one hand, carry out external processing outside being independent of outer axle sleeve with the oil storage cave, make the processing mode of oil storage cave more flexible, for example can once only stamping forming through the punch press, then through the edge rolling, rigid coupling, the shaping inner core cover of taking the oil cave of formation, production efficiency has greatly improved, on the other hand, the restriction to oil storage cave shape structure has been relieved, the oil storage cave can be regular circle, the rhombus, rectangle etc. also can be 8 font oil grooves, fishbone oil groove etc. provides multiple possibility for the oil storage cave;

2. when the lubricating grease in the oil storage hole is about to be consumed, the lubricating grease can sequentially flow to a position between the inner core sleeve and the bearing through the outer oil groove, the oil filling hole, the inner oil groove and the oil inlet hole, then along with the rotation of the bearing, the lubricating grease can permeate into the oil storage hole, after a period of time, the lubricating grease is stored in the oil storage hole again, and the lubricating grease is more convenient to supplement;

3. the whole area of the oil storage cavity accounts for 15-25% of the surface area of the inner wall of the inner core sleeve, and the shaft sleeve bearing can be lubricated for a long time by supplementing lubricating grease once;

4. the antifriction and wear-resistant layer arranged on the inner wall of the inner core sleeve can effectively reduce the friction coefficient of the inner wall of the inner core sleeve and improve the wear-resistant performance of the inner wall of the inner core sleeve, thereby prolonging the service life of the inner core sleeve.

Drawings

Fig. 1 is a sectional view of the present invention.

Fig. 2 is a schematic perspective view of the outer sleeve according to the present invention.

Fig. 3 is a schematic perspective view of the inner core cover of the present invention.

The reference numbers in the figures are:

1. an outer sleeve; 11. an outer oil groove; 12. an inner oil groove; 13. an oil filler hole;

2. an inner core sleeve; 21. oil storage holes; 22. an oil inlet hole.

Detailed Description

To facilitate an understanding of the present invention, the present invention will be described more fully with reference to the following specific embodiments.

As shown in fig. 1-3, a double-layer shaft sleeve comprises an outer shaft sleeve 1 and an inner core sleeve 2, wherein the outer shaft sleeve 1 and the inner core sleeve 2 are both of a cylindrical structure with two open ends, and the inner core sleeve 2 is coaxially and fixedly sleeved in the outer shaft sleeve 1.

As shown in fig. 2, the outer wall middle part of the outer shaft sleeve 1 coaxially provided with an outer oil groove 11 in an annular structure, the inner wall middle part of the outer shaft sleeve 1 coaxially provided with an inner oil groove 12 in an annular structure, the outer oil groove 11 and the inner oil groove 12 are connected and communicated through an oil filling hole 13, and the oil filling hole 13 is provided with a plurality of along the circumferential direction array of the outer oil groove 11.

As shown in fig. 3, the inner core sleeve 2 is provided with an oil inlet 22 penetrating through the wall thickness thereof, the oil inlet 22 is communicated with the inner oil groove 12 formed in the inner wall of the outer shaft sleeve 1, and the oil inlet 22 is provided with a plurality of oil inlets along the circumferential direction of the inner oil groove 12.

The inner wall of the inner core sleeve 2 is evenly provided with a plurality of oil storage holes 21.

Preferably, the oil storage cavity 21 may have a groove structure or a through hole structure.

Preferably, the whole area of the oil storage cavity 21 accounts for 15 to 25 percent of the surface area of the inner wall of the inner core sleeve 2.

Preferably, the inner core sleeve 2 can be a seamless core sleeve or a seam core sleeve formed by rolling.

Preferably, the inner wall of the inner core sleeve 2 is coated with an antifriction and wear-resistant layer, and the antifriction and wear-resistant layer is used for reducing the friction coefficient of the inner wall of the inner core sleeve 2 and improving the wear resistance of the inner wall of the inner core sleeve 2.

The utility model discloses during the use, at first at the inside coating lubricating grease at inner core cover 2 for there is lubricating grease in the oil storage cave 21, install this axle sleeve on the bearing again, when the lubricating grease in the oil storage cave 21 of this axle sleeve is about to consume totally, lubricating grease loops through the outer oil groove 11 that sets up in 1 outer wall of outer axle sleeve, oil filler point 13, set up in 1 inside inner oil groove 12 of outer axle sleeve, oil inlet 22 flows to between inner core cover 2 and the bearing, then, along with the rotation of bearing, lubricating grease can be to the infiltration in the oil storage cave 21, after a period, there is lubricating grease in the oil storage cave 21 promptly again.

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a double-deck axle sleeve, includes outer axle sleeve, interior oil groove has been seted up to the inner wall of outer axle sleeve, and the oil filler point with interior oil groove switch-on is seted up to the outer wall of outer axle sleeve, its characterized in that, the coaxial inner core cover that has set firmly in the outer axle sleeve, the oil inlet hole with interior oil groove switch-on is seted up on the inner core cover, and the oil storage cave has been seted up to the inside of inner core cover.

2. The double-layer bushing as claimed in claim 1, wherein said internal oil groove is formed in a ring-shaped groove structure.

3. The double-layer shaft sleeve according to claim 2, wherein an outer oil groove in a ring groove structure is formed in the outer portion of the outer shaft sleeve, and the outer oil groove and the inner oil groove are communicated with each other through an oil filling hole.

4. The double-layer shaft sleeve as claimed in claim 3, wherein at least two oil holes are formed along the circumferential direction of the outer oil groove;

and at least two oil inlet holes are formed along the circumferential direction of the outer oil groove.

5. The double-layer shaft sleeve as claimed in claim 1, wherein the inner wall of the inner core sleeve is provided with at least two oil storage holes.

6. The double-layered shaft sleeve according to claim 5, wherein the entire area of the oil reservoir occupies 15 to 25% of the surface area of the inner wall of the inner core sleeve.

7. The double-layer shaft sleeve according to claim 1, wherein the inner wall of the inner core sleeve is coated with a friction reducing and wear resisting layer for reducing a friction coefficient and improving wear resistance.