CN215596374U

CN215596374U - Rotating shaft oiling sealing structure

Info

Publication number: CN215596374U
Application number: CN202121642275.7U
Authority: CN
Inventors: 刘景平; 胡小龙
Original assignee: Guangzhou Qinling Vehicle Technology Science & Tech Co ltd
Current assignee: Guangzhou Qinling Vehicle Technology Science & Tech Co ltd
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2022-01-21
Anticipated expiration: 2031-07-19

Abstract

The utility model discloses a rotary shaft oil injection sealing structure, aiming at conveniently injecting oil to a rotary shaft and having good sealing effect, and the technical scheme is as follows: a rotary shaft oiling sealing structure comprises a rotary shaft and a flange plate, wherein a bearing is arranged on the flange plate, the rotary shaft is rotatably connected with the flange plate through the bearing, a hollow boss extends out of the flange plate, a sealing module is arranged in the boss, and the rotary shaft is in sealing connection with the sealing module; the sealing module comprises two oil seals and an annular shaft sleeve positioned between the two oil seals, annular grooves are formed in the inner side and the outer side of the annular shaft sleeve and communicated with each other through a plurality of through holes, oil filling holes communicated with the annular grooves in the outer side of the annular shaft sleeve are formed in the bosses, oil inlet holes communicated with the annular grooves in the inner side of the annular shaft sleeve are formed in the rotating shaft, an oil passage loop communicated with an external oil cavity is formed in the rotating shaft, and the oil inlet holes are connected with the oil passage loop and belong to the technical field of mechanical transmission.

Description

Rotating shaft oiling sealing structure

Technical Field

The utility model belongs to the technical field of mechanical transmission, and particularly relates to a rotary shaft oil injection sealing structure.

Background

The rotating shaft of the existing clutch needs to be filled with oil for lubrication and heat dissipation, but the rotating speed of the rotating shaft is high during operation, and at the moment, oil is difficult to be filled into the shaft.

In view of the above situation, CN103697084B discloses a hydraulic viscous speed-regulating clutch for speed regulation of a fan, in which power of the hydraulic viscous speed-regulating clutch is input through a clutch outer hub with an input gear, power-transferring working oil is supplied through an input shaft end, control oil pushes a piston to move axially through a control oil passage on an installation plate, a friction pair gap is changed, an output rotation speed is regulated, and the working oil enters a friction pair through oil holes which are uniformly distributed in the circumferential direction and distributed in unequal diameters in the axial direction after entering through the input shaft end, so as to provide oil film bearing capacity and lubrication cooling. The clutch injects oil into the incoming shaft through the lubricating oil pipe joint, the sealing effect of the joint is difficult to guarantee, and the oil leakage condition is easy to occur.

Therefore, the technical problems to be solved by the application are as follows: how to provide a structure that conveniently gives the rotation axis oiling and sealed effectual.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a rotary shaft lard sealing structure which aims at conveniently filling oil to a rotary shaft and has a good sealing effect.

According to a first aspect of the utility model, a rotary shaft oil injection sealing structure is provided, which comprises a rotary shaft and a flange plate, wherein a bearing is arranged on the flange plate, the rotary shaft is rotatably connected with the flange plate through the bearing, a hollow boss extends out of the flange plate, a sealing module is arranged in the boss, and the rotary shaft is in sealing connection with the sealing module;

the sealing module comprises two oil seals and an annular shaft sleeve positioned between the two oil seals, annular grooves are formed in the inner side and the outer side of the annular shaft sleeve and communicated with each other through a plurality of through holes, oil filling holes communicated with the annular grooves in the outer side of the annular shaft sleeve are formed in the bosses, oil inlet holes communicated with the annular grooves in the inner side of the annular shaft sleeve are formed in the rotating shaft, an oil duct loop communicated with an external oil cavity is formed in the rotating shaft, and the oil inlet holes are connected with the oil duct loop.

In a specific embodiment of the utility model, the number of the sealing modules is two, an annular baffle plate is arranged between the two sealing modules, and the outer side of the annular baffle plate is fixedly connected with the inner wall of the boss.

In a specific embodiment of the utility model, two retainer ring grooves are formed in the boss, elastic retainer rings are arranged in the retainer ring grooves, and the two elastic retainer rings respectively press the two sealing modules onto the annular baffle.

In a particular embodiment of the utility model, a spacer ring is provided between the sealing module and the circlip.

In a specific embodiment of the present invention, the oil passage loop includes a first flow passage and a second flow passage that are not communicated with each other, and the first flow passage and the second flow passage correspond to the two sealing modules, respectively.

In a specific embodiment of the utility model, the oil filling hole is provided with an adapter for connecting a peripheral oil pipe, and the adapter is hermetically connected with the oil filling hole.

One of the above technical solutions of the present invention has at least one of the following advantages or beneficial effects:

the sealing module is arranged to inject oil to the rotating shaft, so that oil can be supplied to the clutch and can also be radiated by the rotating shaft.

Drawings

The utility model is further described below with reference to the accompanying drawings and examples;

FIG. 1 is a structural cross-sectional view of a first embodiment of the present invention;

fig. 2 is a perspective view of an annular boss according to a first embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, and may be, for example, a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other elements or indirectly connected through one or more other elements or in an interactive relationship between two elements.

The following disclosure provides many different embodiments, or examples, for implementing different aspects of the utility model.

Referring to fig. 1 and 2, in an embodiment of the present invention, a rotating shaft oiling sealing structure includes a rotating shaft 1 and a flange 2, a bearing 3 is disposed on the flange 2, the rotating shaft 1 is rotatably connected to the flange 2 through the bearing 3, a hollow boss 4 extends from the flange 2, a sealing module 5 is disposed in the boss 4, and the rotating shaft 1 is hermetically connected to the sealing module 5;

the sealing module 5 comprises two oil seals 51 and an annular shaft sleeve 52 located between the two oil seals 51, annular grooves 521 are formed in the inner side and the outer side of the annular shaft sleeve 52, the two annular grooves 521 are communicated through a plurality of through holes 522, an oil filling hole 41 communicated with the annular groove 521 in the outer side of the annular shaft sleeve 52 is formed in the boss 4, an oil inlet hole 11 communicated with the annular groove 521 in the inner side of the annular shaft sleeve 52 is formed in the rotating shaft 1, an oil passage loop 12 communicated with an external oil cavity is formed in the rotating shaft 1, and the oil inlet hole 11 is connected with the oil passage loop 12.

Come the oiling to rotation axis 1 through setting up sealed module 5, both can be the clutch fuel feeding, still can be for rotation axis 1 heat dissipation, generally speaking, to oil filler hole 41 oiling, oil can be full of the annular groove 521 in the annular axle sleeve 52 outside, the annular groove 521 of annular axle sleeve 52 inboard is flowed in to the rethread through-hole 522, oil duct return circuit 12 in the rotation axis 1 is imported through inlet port 11 on the rotation axis 1 after that, accomplish the oiling, and the both sides of annular axle sleeve 52 are equipped with oil blanket 51, ensure that oil can not reveal, it is sealed respond well, can not influence the rotation of rotation axis 1 yet.

Preferably, the number of the sealing modules 5 is two, an annular baffle 53 is arranged between the two sealing modules 5, the outer side of the annular baffle 53 is fixedly connected with the inner wall of the boss 4, the oil seals 51 of the two sealing modules 5 are pressed against each other due to elasticity when in contact, and may be inclined and further cannot be in sealing contact with the rotating shaft 1, so that sealing failure is caused, and oil leaks out, so that the annular baffle 53 is arranged to separate the oil seals 51 of the two modules, support the oil seals 51, and ensure the sealing effect.

In an embodiment of the present invention, two retainer grooves are formed in the boss 4, elastic retainers 54 are formed in the retainer grooves, the two elastic retainers 54 respectively press the two seal modules 5 against the annular baffle 53, and fix the two seal modules 5, so as to prevent the oil seal 51 and the annular shaft sleeve 52 from axially shifting on the rotating shaft 1, and prevent the sealing and the oil injection from being affected.

Preferably, a spacer ring 55 is provided between the seal module 5 and the circlip 54 to prevent the direct contact between the circlip 54 and the oil seal 51 from opening the oil seal 51 and thereby disabling the oil seal 51.

In an embodiment of the present invention, the oil passage circuit 12 includes a first flow passage 13 and a second flow passage 14 that are not communicated with each other, the first flow passage 13 and the second flow passage 14 correspond to the two sealing modules 5, respectively, and high pressure is required when supplying oil to the clutch, and is not required when injecting oil to the rotating shaft 1 for heat dissipation, so that two flow passages are provided, and different oil pressures can be used.

Preferably, be equipped with adapter 6 on the oil filler point 41, adapter 6 and oil filler point 41 sealing connection for the switching peripheral hardware oil pipe, the adaptability is stronger.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A rotary shaft oiling sealing structure comprises a rotary shaft and a flange plate, wherein a bearing is arranged on the flange plate, and the rotary shaft is rotatably connected with the flange plate through the bearing;

2. The rotary shaft oil injection sealing structure according to claim 1, wherein the number of the sealing modules is two, an annular baffle is arranged between the two sealing modules, and the outer side of the annular baffle is fixedly connected with the inner wall of the boss.

3. The rotary shaft oil injection sealing structure according to claim 2, wherein two retainer ring grooves are formed in the boss, elastic retainer rings are formed in the retainer ring grooves, and the two elastic retainer rings press the two sealing modules against the annular baffle respectively.

4. The rotary oiling seal structure of claim 3, wherein a spacer ring is provided between the seal module and the circlip.

5. The rotary oiling sealing structure of claim 2, wherein the oil passage circuit comprises a first flow passage and a second flow passage which are not communicated with each other, and the first flow passage and the second flow passage correspond to the two sealing modules respectively.

6. The rotating shaft oil injection sealing structure according to claim 1, wherein an adapter for connecting a peripheral oil pipe is arranged on the oil injection hole, and the adapter is hermetically connected with the oil injection hole.