CN109027476B - Oil inlet structure - Google Patents

Abstract

The utility model relates to an oil circuit sealing technical field provides an oil feed structure, and this oil feed structure includes: flange bush, fuel sprayer, oil pipe joint and elastic component. The flange bushing comprises a bushing body and a flange, and the first end of the bushing body is sleeved in an opening of a hollow rotating shaft in an interference manner; the oil nozzle comprises a spray head and an annular seat, and the spray head is movably sleeved at the second end of the sleeve body; the oil pipe joint comprises a first connecting end and a second connecting end which are communicated, the first connecting end is connected with an oil pipe, the second connecting end is in sliding sealing sleeve joint on the annular seat, and a limiting boss is arranged in the oil pipe joint; the elastic piece is positioned between the limiting boss and the annular seat and used for tightly attaching the annular seat to the flange. The oil inlet structure provided by the disclosure can realize axial sealing through the matching of the spray head and the sleeve body, and can also realize end face sealing between the annular seat and the flange through the pretightening force of the elastic piece.

Description

Oil inlet structure

Technical Field

The utility model relates to an oil circuit sealing technical field especially relates to an oil feed structure.

Background

In some oil feed arrangements, it is desirable to transfer oil from a stationary oil tube into a rotating hollow rotating shaft. For example, in the lubricating structure of the intermediate bearing, the intermediate bearing has inherent difficulty in lubrication due to the installation characteristics of the intermediate bearing, and at present, the lubricating oil of the intermediate bearing needs to enter the intermediate bearing through the axle center oil hole, so that the lubricating oil in the oil pipe can be transmitted into the axle center oil hole of the intermediate bearing through the oil inlet structure.

In the correlation technique, the oil inlet structure can include a fuel sprayer, and the fuel sprayer can include shower nozzle and annular seat, and annular seat and oil pipe sealing connection are provided with along axially extended screw thread arch on the shower nozzle, and slip the cup joint in hollow rotating shaft. When the hollow rotating shaft rotates, an axial sealing structure is formed between the spray head and the hollow rotating shaft.

However, in the related art, the oil jet can seal oil only in the axial direction, and oil is still liable to leak from the radial gap between the oil jet and the hollow rotary shaft.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

BRIEF SUMMARY OF THE PRESENT DISCLOSURE

The purpose of this disclosure is to provide an oil feed structure, and then overcome to a certain extent at least in the correlation technique, the technical problem that oil still easily leaks from the radial clearance of fuel sprayer and hollow rotating shaft.

According to an aspect of the present disclosure, there is provided an oil feed structure, including: flange bush, fuel sprayer, oil pipe joint and elastic component. The flange bushing comprises a bushing body and a flange, and the first end of the bushing body is sleeved in an opening of a hollow rotating shaft in an interference manner; the oil nozzle comprises a spray head and an annular seat, and the spray head is movably sleeved at the second end of the sleeve body so as to form an axial sealing structure; the oil pipe joint comprises a first connecting end and a second connecting end which are communicated, the second connecting end is connected with an oil pipe, the first connecting end is connected to the annular seat in a sliding sealing and sealing mode, and a limiting boss is arranged in the oil pipe joint; the elastic piece is positioned between the limiting boss and the annular seat and used for tightly attaching the annular seat to the flange.

In an exemplary embodiment of the disclosure, the first connection end includes a first annular cavity, the second connection end includes a second annular cavity, the first annular cavity diameter is larger than the second annular cavity diameter, and the limiting boss is formed at the connection position of the first annular cavity and the second annular cavity.

In an exemplary embodiment of the present disclosure, further comprising: switching oil pipe, first sealing washer and second sealing washer. The first end of the transfer oil pipe is sleeved in the annular seat, and the second end of the transfer oil pipe is sleeved in the second annular cavity; the first sealing ring is sleeved between the adapter oil pipe and the annular seat; and the second sealing ring is sleeved between the adapter oil pipe and the second annular cavity.

In an exemplary embodiment of the disclosure, an inner wall of the annular seat is provided with a first annular boss, an inner wall of the second annular cavity is provided with a second annular boss, and the transfer oil pipe is located between the first annular boss and the second annular boss.

In an exemplary embodiment of the disclosure, the first annular cavity inner wall is provided with a third annular boss, and the oil jet is located between the flange bushing and the third annular boss.

In an exemplary embodiment of the disclosure, an anti-rotation structure is provided between the annular seat and the tubing joint for preventing relative rotation of the annular seat and the tubing joint.

In an exemplary embodiment of the disclosure, the anti-rotation structure includes a limit groove extending axially along the outer surface of the annular seat and a limit protrusion located on the inner wall of the first annular cavity, and the limit groove and the limit protrusion are installed in a matching manner.

In an exemplary embodiment of the present disclosure, the annular seat face is provided with a dynamic pressure groove on a side facing the flange bushing.

In an exemplary embodiment of the present disclosure, the elastic member is a spring, and the spring is sleeved outside the transfer oil pipe;

the outer surface of the switching oil pipe is provided with a bulge, and the bulge is positioned in the spring.

In an exemplary embodiment of the present disclosure, the material of the flange bushing includes brass; the material of the oil nozzle comprises graphite.

The utility model provides an oil feed structure, this oil feed structure includes: flange bush, fuel sprayer, oil pipe joint and elastic component. The flange bushing comprises a bushing body and a flange, and the first end of the bushing body is sleeved in an opening of a hollow rotating shaft in an interference manner; the oil nozzle comprises a spray head and an annular seat, and the spray head is movably sleeved at the second end of the sleeve body; the oil pipe joint comprises a first connecting end and a second connecting end which are communicated, the second connecting end is connected with an oil pipe, the first connecting end is connected to the annular seat in a sliding sealing and sealing mode, and a limiting boss is arranged in the oil pipe joint; the elastic piece is positioned between the limiting boss and the annular seat and used for tightly attaching the annular seat to the flange. On the one hand, the oil inlet structure provided by the disclosure can realize axial sealing through the matching of the spray head and the sleeve body and can also realize end face sealing between the annular seat and the flange through the pretightening force of the elastic piece. On the other hand, the oil inlet structure is simple in structure and low in cost

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

FIG. 1 is an axial cross-sectional view of an exemplary embodiment of an oil feed structure of the present disclosure;

FIG. 2 is a schematic structural view of an exemplary embodiment of an oil feed structure of the present disclosure;

FIG. 3 is a side view of an annular seat in an exemplary embodiment of an oil feed structure of the present disclosure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". Other relative terms, such as "high," "low," "top," "bottom," "left," "right," and the like are also intended to have similar meanings. When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.

The terms "a," "an," "the," and the like are used to denote the presence of one or more elements/components/parts; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.

The present exemplary embodiment first provides an oil feeding structure, as shown in fig. 1 and 2, fig. 1 is an axial sectional view of an exemplary embodiment of the oil feeding structure of the present disclosure; FIG. 2 is a schematic diagram of an exemplary embodiment of an oil feed structure according to the present disclosure. This oil feed structure includes: flange bush 1, fuel sprayer 2, oil pipe joint 3 and elastic component 4. The flange bushing 1 comprises a sleeve body 11 and a flange 12, wherein a first end of the sleeve body 11 is sleeved in an opening of a hollow rotating shaft 5 in an interference manner; the oil nozzle 2 comprises a spray head 21 and an annular seat 22, and the spray head 21 is movably sleeved at the second end of the sleeve body 11 so as to form an axial sealing structure; the oil pipe joint 3 comprises a first connecting end 31 and a second connecting end 32 which are communicated, the second connecting end 32 is connected with an oil pipe 6, the first connecting end 31 is connected to the annular seat 22 in a sliding and sealing manner, and a limiting boss 7 is arranged in the oil pipe joint 3; the elastic element 4 is positioned between the limiting boss 7 and the annular seat 22 and is used for tightly attaching the annular seat 22 to the flange 12.

The utility model provides an oil feed structure, this oil feed structure includes: flange bush, fuel sprayer, oil pipe joint and elastic component. The flange bushing comprises a bushing body and a flange, and the first end of the bushing body is sleeved in an opening of a hollow rotating shaft in an interference manner; the oil nozzle comprises a spray head and an annular seat, and the spray head is movably sleeved at the second end of the sleeve body; the oil pipe joint comprises a first connecting end and a second connecting end which are communicated, the second connecting end is connected with an oil pipe, the first connecting end is connected to the annular seat in a sliding sealing and sealing mode, and a limiting boss is arranged in the oil pipe joint; the elastic piece is positioned between the limiting boss and the annular seat and used for tightly attaching the annular seat to the flange. On one hand, the oil inlet structure provided by the disclosure can realize axial sealing through the matching of the spray head and the sleeve body and can also realize end face sealing between the annular seat and the flange through the pretightening force of the elastic piece; on the other hand, this oil feed structure simple structure, cost are lower.

In the exemplary embodiment, an alternative manner of the spray head 21 movably sleeved on the second end of the sleeve body 11 to form the axial sealing structure may be that a threaded protrusion extending along the axial direction may be disposed on the spray head 21, and when the sleeve body 11 rotates along with the hollow rotating shaft, the threaded protrusion may block oil from moving in the axial direction.

In the exemplary embodiment, one structure of the limiting boss 7 may be that the first connecting end 31 may include a first annular cavity, the second connecting end 32 may include a second annular cavity, the first annular cavity has a diameter larger than that of the second annular cavity, a junction of the first annular cavity and the second annular cavity may form the limiting boss 7, and the limiting boss 7 is an annular boss. It should be understood that in other exemplary embodiments, the limiting projection may be formed in more ways, for example, the limiting projection may be a plurality of projections formed on a circumference of the inner cavity of the oil pipe structure.

In the exemplary embodiment, since the second connection end 32 is slidably sleeved on the annular seat 22, oil leakage is easily caused between the second connection end 32 and the annular seat 22. In this exemplary embodiment, as shown in fig. 1 and 2, the oil inlet structure may further include: the adapter oil pipe, the first seal ring 91, and the second seal ring 92. The first end of the transfer oil pipe is sleeved in the annular seat 22, and the second end of the transfer oil pipe is sleeved in the second annular cavity; the first sealing ring 91 is sleeved between the adapter oil pipe and the annular seat 22; a second seal ring 92 is sleeved between the adapter tubing and the second annular cavity. Wherein, the transfer oil pipe can be respectively provided with annular grooves 81 and 82, the first sealing ring 91 is sleeved on the annular groove 81, and the second sealing ring 92 is sleeved on the annular groove 82. The second connection end 32 can be slidably and sealingly sleeved on the annular seat 22 by arranging the adapter oil pipe, the first sealing ring 91 and the second sealing ring 92.

In the exemplary embodiment, as shown in fig. 1, the inner wall of the annular seat 22 may be provided with a first annular boss 221, the inner wall of the second annular cavity may be provided with a second annular boss 321, and the transfer oil pipe may be located between the first annular boss 221 and the second annular boss 321. The first annular ledge 221 may be implemented by providing a different inner diameter within the inner cavity of the annular seat 22, and the second annular ledge 321 may likewise be implemented by providing a different inner diameter within the second annular cavity. This arrangement traps the transfer tubing between the first annular land 221 and the second annular land 321, thereby preventing the transfer tubing from escaping the seal with the annular seat 22 or the second annular cavity.

In the exemplary embodiment, the first annular cavity inner wall may be provided with a third annular boss 311, and the oil jet 2 may be located between the flange bushing 1 and the third annular boss 311. The third annular boss 311 may limit the oil jet 2 to move to the second annular chamber side of the first annular chamber, so that damage to the elastic member due to the oil jet 2 excessively pressing the elastic member may be avoided.

In order to avoid the rotation of the oil pipe joint 3 with the flange bushing in the present exemplary embodiment, as shown in fig. 2, an anti-rotation structure may be provided between the annular seat 22 and the oil pipe joint 3, and the anti-rotation structure is used for preventing the relative rotation between the annular seat 22 and the oil pipe joint 3. In the exemplary embodiment, the anti-rotation structure may be selected in such a way that the anti-rotation structure may include a limiting groove 222 extending axially along the outer surface of the annular seat 22 and a limiting protrusion 312 located on the inner wall of the first annular cavity, and the limiting groove 222 is installed in cooperation with the limiting protrusion 312. It should be understood that in other exemplary embodiments, more anti-rotation structures may be selected, for example, the anti-rotation structure may be a splined structure, and such are within the scope of the present disclosure.

In the exemplary embodiment, the elastic member 4 may be a spring, and the spring housing may be disposed outside the transfer oil pipe; the outer surface of the adapter oil pipe can be further provided with a protrusion 83, and the protrusion 83 is located in the spring. The spring may be fixed on the protrusion 83 so as to avoid displacement of the spring.

In the present exemplary embodiment, the flange bushing 1 is sealed in contact with the oil jet 2. When the hollow rotary shaft 5 rotates, the flange bush 1 comes into frictional contact with the oil jet 2. In order to reduce the influence of friction on the parts and prolong the service life of the parts. The flange bushing 1 may be composed of brass; the oil jet 2 may be composed of graphite. The brass has stronger wear resistance, and the graphite has a lubricating effect, so that the damage of friction to the flange bush 1 and the oil nozzle 2 is reduced. In other exemplary embodiments, the contact portion of the flange bushing 1 with the oil jet 2 may be composed of brass, and the other portion may be composed of other materials; similarly, the contact portion of the oil jet 2 with the flange bushing 1 is made of graphite, and the other portion may be made of other materials.

In the exemplary embodiment, as shown in fig. 3, a side view of an annular seat in one exemplary embodiment of an oil feeding structure of the present disclosure is shown. The side of the annular seat 22 facing the flange bushing 1 may be provided with dynamic pressure grooves 223. When the flange bushing rotates relative to the annular seat, gas around the annular seat is sucked into the dynamic pressure groove along the circumferential direction of the annular seat and faces the center from the outer diameter, so that the gas is compressed to increase the pressure, and a gas film with a certain thickness is formed between the flange of the flange bushing and the annular seat. The air film may block oil from flowing out through the gap between the flange and the annular seat. The arrangement can avoid contact friction between the flange and the annular seat, thereby prolonging the service life of the device.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments, and the features discussed in connection with the embodiments are interchangeable, if possible. In the above description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the embodiments of the disclosure may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.

Claims (10)

1. The utility model provides an oil feed structure, its characterized in that includes:

the flange bushing comprises a bushing body and a flange, and the first end of the bushing body is sleeved in an opening of a hollow rotating shaft in an interference manner;

the oil spray nozzle comprises a spray head and an annular seat, and the spray head is movably sleeved at the second end of the sleeve body so as to form an axial sealing structure;

the oil pipe joint comprises a first connecting end and a second connecting end which are communicated, the second connecting end is connected with an oil pipe, the first connecting end is connected to the annular seat in a sliding sealing and sealing mode, and a limiting boss is arranged in the oil pipe joint;

and the elastic piece is positioned between the limiting boss and the annular seat and is used for tightly attaching the annular seat to the flange.

2. The oil feed structure of claim 1, wherein the first connection end comprises a first annular cavity, the second connection end comprises a second annular cavity, the diameter of the first annular cavity is larger than that of the second annular cavity, and the limiting boss is formed at the connection position of the first annular cavity and the second annular cavity.

3. The oil feed structure of claim 2, further comprising:

the first end of the transfer oil pipe is sleeved in the annular seat, and the second end of the transfer oil pipe is sleeved in the second annular cavity;

the first sealing ring is sleeved between the transfer oil pipe and the annular seat;

and the second sealing ring is sleeved between the transfer oil pipe and the second annular cavity.

4. The oil feed structure according to claim 3,

the inner wall of the annular seat is provided with a first annular boss, the inner wall of the second annular cavity is provided with a second annular boss, and the switching oil pipe is located between the first annular boss and the second annular boss.

5. The oil feed structure according to claim 2,

and a third annular boss is arranged on the inner wall of the first annular cavity, and the oil spray nozzle is positioned between the flange bushing and the third annular boss.

6. The oil feed structure according to claim 2,

and an anti-rotation structure is arranged between the annular seat and the oil pipe joint and is used for preventing the annular seat and the oil pipe joint from rotating relatively.

7. The oil feed structure according to claim 6,

the anti-rotation structure comprises a limiting groove and a limiting bulge, the limiting groove extends axially along the outer surface of the annular seat, the limiting bulge is located on the inner wall of the first annular cavity, and the limiting groove is matched with the limiting bulge.

8. The oil feed structure according to claim 1,

one side of the annular seat facing the flange bushing is provided with a dynamic pressure groove.

9. The oil inlet structure of claim 3, wherein the elastic member is a spring, and the spring is sleeved outside the transfer oil pipe;

the outer surface of the switching oil pipe is provided with a bulge, and the bulge is positioned in the spring.

10. The oil feed structure according to claim 1,

the material of the flange bushing comprises brass;

the material of the oil nozzle comprises graphite.

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