CN117963120A - Oil distributing sealing assembly and oil distributor - Google Patents

Abstract

The disclosure provides an oil distribution sealing assembly and an oil distributor, and belongs to the technical field of ship propulsion. The oil distribution seal assembly includes: an oil distribution ring, an oil distribution short column and an adjusting gasket; the oil distribution ring comprises an oil distribution cylinder and an oil distribution end cover, one end of the oil distribution cylinder is provided with an inner flange, the oil distribution end cover is covered at the other end of the oil distribution cylinder, the adjusting gasket is clamped between the end face of the oil distribution end cover and the other end of the oil distribution cylinder, the oil distribution end cover is detachably connected with the oil distribution cylinder, and the end face, close to the oil distribution end cover, of the inner flange and the end face, close to the inner flange, of the oil distribution end cover are provided with sealing layers; one end of the oil distribution short column is inserted and mounted in the oil distribution cylinder, one end of the oil distribution short column is provided with an outer flange, the outer flange is positioned in a cavity surrounded by the inner flange, the oil distribution cylinder and the oil distribution end cover, and two ends of the outer flange are respectively propped against the end face of the inner flange and the oil distribution end cover. The method can simplify the step of repairing the sealing layer and reduce the maintenance difficulty of the oil distribution sealing assembly.

Description

Oil distributing sealing assembly and oil distributor

Technical Field

The disclosure relates to the technical field of ship propulsion, in particular to an oil distribution sealing assembly and an oil distributor.

Background

The oil distributor is a core component of a controllable pitch propeller propulsion system and is a distributing mechanism of high-low pressure hydraulic oil of a controllable pitch propeller device. When the oil distributor works, oil is injected into the variable-pitch oil cylinder of the adjustable pitch propeller through the oil injection port of the oil distributor, so that the piston in the variable-pitch oil cylinder is pushed to reciprocate to realize the forward or reverse variable pitch of the adjustable pitch propeller. The most important component in the oil distributor is an oil distributing sealing component, which is a high-pressure sealing pair rotating at high speed.

In the related art, the oil distribution seal assembly comprises an oil distribution ring and an oil distribution stub, and the oil distribution stub is coaxially inserted into an inner hole of the oil distribution ring. The inside of the oil distribution short column is provided with two axially extending oil holes which are respectively connected with a forward oil cavity and a reverse oil cavity of the variable-pitch oil cylinder of the adjustable pitch propeller. The oil distribution ring is provided with two annular oil cavities which are respectively communicated with the two oil holes through radial holes on the oil distribution short column, and the annular oil cavities are connected with the hydraulic system through oil filling ports.

In order to avoid leakage of oil in the annular oil cavity from the gap between the inner hole of the oil distribution ring and the outer wall of the oil distribution short column, a sealing layer is usually arranged between the inner hole of the oil distribution ring and the outer wall of the oil distribution short column. However, when the oil distributor is in operation, the oil distribution stub and the oil distribution ring will rotate relative to each other. With the long-term use of the oil distributor, the sealing layer is gradually worn, so that the tightness between the oil distributing ring and the oil distributing short column is poor, the oil distributing sealing component is disassembled and assembled again, and the process of repairing the sealing layer is complicated. Therefore, the maintenance difficulty of the oil distribution sealing assembly is high.

Disclosure of Invention

The embodiment of the disclosure provides an oil distribution sealing assembly and an oil distributor, which can simplify the step of repairing a sealing layer and reduce the maintenance difficulty of the oil distribution sealing assembly. The technical scheme is as follows:

embodiments of the present disclosure provide an oil distribution seal assembly comprising: an oil distribution ring, an oil distribution short column and an adjusting gasket; the oil distribution ring comprises an oil distribution cylinder and an oil distribution end cover, one end of the oil distribution cylinder is provided with an inner flange, the oil distribution end cover is covered on the other end of the oil distribution cylinder, the adjusting gasket is clamped between the end face of the oil distribution end cover and the other end of the oil distribution cylinder, the oil distribution end cover is detachably connected with the oil distribution cylinder, and sealing layers are arranged on the end face, close to the oil distribution end cover, of the inner flange and the end face, close to the inner flange, of the oil distribution end cover; one end of the oil distribution short column is inserted into the oil distribution cylinder, one end of the oil distribution short column is provided with an outer flange, the outer flange is positioned in a cavity surrounded by the inner flange, the oil distribution cylinder and the oil distribution end cover, and two ends of the outer flange are respectively propped against the end face of the inner flange and the oil distribution end cover.

In one implementation manner of the embodiment of the disclosure, an annular cavity is formed between the outer flange and the oil distribution cylinder, and a lubricating oil port and an oil discharge port which extend radially are formed in the outer wall surface of the oil distribution cylinder and are communicated with the annular cavity.

In another implementation manner of the embodiment of the disclosure, grooves are formed in the end face, close to the oil distribution end cover, of the inner flange and the end face, close to the inner flange, of the oil distribution end cover, and the sealing layer is located on the end face, close to the oil distribution end cover, of the inner flange and extends into the grooves.

In another implementation of the disclosed embodiments, the sealing layer is a babbitt layer.

In another implementation of the embodiments of the present disclosure, the sealing layer has a thickness of 2mm to 3mm.

In another implementation manner of the embodiment of the disclosure, a distance between an end surface of the inner flange, which is close to the oil distribution end cover, and an end surface of the outer flange is 0.03mm to 0.06mm; the distance between the end face of the oil distribution end cover, which is close to the inner flange, and the end face of the outer flange is 0.03mm to 0.06mm.

In another implementation manner of the embodiment of the disclosure, an annular protrusion is arranged on the end surface of the other end of the oil distribution cylinder, the annular protrusion is coaxially connected with the oil distribution cylinder, and an annular groove matched with the annular protrusion is arranged on the end surface of the oil distribution end cover, which is close to the oil distribution cylinder; the annular bulge is positioned in the annular groove, the adjusting gasket is annular, and the adjusting gasket is positioned between the end face of the annular bulge and the bottom of the annular groove.

In another implementation manner of the embodiment of the disclosure, the oil distribution short column is provided with two first oil ways extending from one end to the other end, the oil distribution end cover is provided with second oil ways corresponding to the first oil ways one by one, the second oil ways axially penetrate through the oil distribution end cover, and the second oil ways are communicated with the corresponding first oil ways.

In another implementation manner of the embodiment of the disclosure, two second oil paths are spaced in parallel, and a central axis of one second oil path coincides with a central axis of the oil distribution end cover; the end face, close to the oil distribution short column, of the oil distribution end cover is provided with an annular counter bore, the radius of the annular counter bore is the same as the distance between the central axes of the two second oil ways, and one end of the other second oil way is communicated with the annular counter bore.

Embodiments of the present disclosure provide an oil dispenser that includes an oil dispensing seal assembly as previously described.

The technical scheme provided by the embodiment of the disclosure has the beneficial effects that at least:

The embodiment of the disclosure provides an oil distribution ring of an oil distribution sealing assembly, which comprises an oil distribution cylinder and an oil distribution end cover, wherein one end of the oil distribution cylinder is provided with an inner flange, the oil distribution end cover is arranged at the other end of the oil distribution cylinder, thus the oil distribution cylinder and the oil distribution end cover form a cavity, one end of an oil distribution short column is inserted into the oil distribution cylinder, an outer flange of the oil distribution short column is positioned in the cavity, and the outer flange of the oil distribution short column is propped against the end face of the inner flange and the oil distribution end cover. And the end face of the inner flange and the end face of the oil distribution end cover are provided with sealing layers, so that an effective sealing effect can be formed when the outer flange rotates relative to the oil distribution cylinder.

After the sealing layer is worn, the distance between the end face of the inner flange and the end face of the oil distribution end cover can be reduced by replacing the adjusting gasket with smaller thickness, so that the worn thickness of the sealing layer can be compensated, and the end face of the inner flange and the end face of the oil distribution end cover can keep sliding sealing with the end face of the outer flange.

Because the sealing layer is not required to be repaired, the oil distribution ring is split into the oil distribution cylinder and the oil distribution end cover, and when in maintenance, the oil distribution end cover is only required to be disassembled to replace the adjusting gaskets with different thicknesses, and the oil distribution ring is not required to be completely removed from the oil distributor. Therefore, the step of repairing the sealing layer can be effectively simplified, and the maintenance difficulty of the oil distribution sealing assembly is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic illustration of a related art oil distribution seal assembly;

FIG. 2 is a schematic illustration of a configuration of an oil distribution seal assembly provided by an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of an oil distribution ring according to an embodiment of the present disclosure;

Fig. 4 is a side view of an oil distribution ring provided by an embodiment of the present disclosure.

The various labels in the figures are described below:

10. oil ring;

11. An oil preparing cylinder; 111. an inner flange; 112. a lubrication oil port; 113. an oil discharge port; 114. an annular protrusion;

12. an oil distribution end cover; 120. a second oil path; 121. an annular groove; 122. an annular counter bore;

20. an oil distribution short column; 200. a first oil passage;

21. an outer flange;

30. adjusting the gasket;

40. An annular cavity;

51. A sealing layer; 52. a groove;

60. and (5) a screw.

Detailed Description

For the purposes of clarity, technical solutions and advantages of the present disclosure, the following further details the embodiments of the present disclosure with reference to the accompanying drawings.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," "third," and the like in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", "top", "bottom" and the like are used only to indicate relative positional relationships, which may be changed accordingly when the absolute position of the object to be described is changed.

Fig. 1 is a schematic structural view of an oil distribution seal assembly provided in the related art. As shown in fig. 1, the oil distribution seal assembly includes an oil distribution ring 10 and an oil distribution stub 20.

The oil distribution stub 20 is connected to the oil pipe in the central shaft of the pitch control propeller and rotates with the propeller. The oil distribution stub 20 is internally drilled with an oil hole a. As shown in fig. 1, two oil holes a of the oil distribution short column 20 are respectively connected with a forward oil cavity and a reverse oil cavity of the variable-pitch oil cylinder through inner and outer cavities of an oil pipe in the shaft.

As shown in fig. 1, the two oil holes of the oil distribution stub 20 are also bored in the radial direction so that the two oil holes a can communicate with the two annular oil chambers B of the oil distribution ring 10. The oil distributing ring 10 is also drilled with two oil filling holes which are respectively communicated with the two annular oil cavities B, the two oil filling holes are respectively connected with a hydraulic system, and hydraulic oil is filled into the annular oil cavities of the oil distributing ring 10 through the hydraulic system.

Since the oil distribution stub 20 rotates with the propeller and the oil distribution ring 10 and the hydraulic system are stationary with respect to the hull, the oil distribution stub 20 and the oil distribution ring 10 will rotate relative to each other.

As shown in fig. 1, the inner wall and both end surfaces of the oil distribution ring 10 and the outer wall and inner end surfaces of the oil distribution stub 20 are provided with sealing layers 51 in regions where they are fitted to each other. The oil distribution short column 20 and the oil distribution ring 10 generate sliding friction under the soaking of hydraulic oil, and an oil distribution sealing pair can be formed.

However, with long-term use of the dispenser, the sealing layer 51 on the oil distribution ring 10 gradually wears, eventually resulting in an excessive gap between the oil distribution stub 20 and the oil distribution ring 10, resulting in an excessive leakage of hydraulic oil. So that the controllable pitch propeller cannot realize normal functions, the repair seal layer 51 must be removed from the oil distributing ring 10 and processed, and this step is complicated and difficult to maintain.

To this end, embodiments of the present disclosure provide an oil distribution seal assembly. Fig. 2 is a schematic structural view of an oil distribution seal assembly provided in an embodiment of the present disclosure. As shown in fig. 2, the oil distribution seal assembly includes: oil distribution ring 10, oil distribution stub 20 and tuning washer 30.

As shown in fig. 2, the oil distribution ring 10 includes an oil distribution cylinder 11 and an oil distribution end cap 12, one end of the oil distribution cylinder 11 is provided with an inner flange 111, and the oil distribution end cap 12 is provided to cover the other end of the oil distribution cylinder 11. The adjusting gasket 30 is sandwiched between the end face of the oil distribution end cap 12 and the other end of the oil distribution cylinder 11, and the oil distribution end cap 12 is detachably connected with the oil distribution cylinder 11, and the end face of the inner flange 111 close to the oil distribution end cap 12 and the end face of the oil distribution end cap 12 close to the inner flange 111 are both provided with sealing layers 51.

As shown in fig. 2, one end of the oil distribution stub 20 is inserted into the oil distribution cylinder 11, one end of the oil distribution stub 20 is provided with an outer flange 21, and the outer flange 21 is located in a cavity enclosed by the inner flange 111, the oil distribution cylinder 11 and the oil distribution end cover 12.

Wherein, the inner diameter of the inner flange 111 is smaller than the outer diameter of the outer flange 21, so that when the outer flange 21 is arranged in the cavity surrounded by the inner flange 111, the oil distribution cylinder 11 and the oil distribution end cover 12, two ends of the outer flange 21 can respectively abut against the end face of the inner flange 111 and the oil distribution end cover 12, so as to prevent the outer flange 21 from sliding out of the cavity.

The embodiment of the disclosure provides an oil distribution ring 10 of an oil distribution sealing assembly, which comprises an oil distribution cylinder 11 and an oil distribution end cover 12, wherein one end of the oil distribution cylinder 11 is provided with an inner flange 111, the oil distribution end cover 12 is covered and assembled at the other end of the oil distribution cylinder 11, thus the oil distribution cylinder 11 and the oil distribution end cover 12 form a cavity, one end of an oil distribution short column 20 is inserted and assembled in the oil distribution cylinder 11, an outer flange 21 of the oil distribution short column 20 is positioned in the cavity, and the outer flange 21 of the oil distribution short column 20 is propped against the end face of the inner flange 111 and the oil distribution end cover 12. Since the seal layer 51 is provided on the end surface of the inner flange 111 and the end surface of the oil distribution cap 12, an effective seal effect can be obtained when the outer flange 21 rotates with respect to the oil distribution cylinder 11.

After the seal layer 51 is worn, the worn thickness of the seal layer 51 may be compensated by changing the smaller thickness adjustment gasket 30 so that the distance between the end face of the inner flange 111 and the end face of the oil distribution end cap 12 is reduced, so that the end face of the inner flange 111 and the end face of the oil distribution end cap 12 can maintain a sliding seal with the end face of the outer flange 21.

Since the sealing layer 51 is not required to be repaired, and the oil distribution ring 10 is split into the oil distribution cylinder 11 and the oil distribution end cover 12, the oil distribution end cover 12 is only required to be disassembled and the adjusting gaskets 30 with different thicknesses are required to be replaced during maintenance, and the oil distribution ring 10 is not required to be completely removed from the oil distributor. Therefore, the step of repairing the seal layer 51 can be effectively simplified, and the maintenance difficulty of the oil distribution seal assembly can be reduced.

Optionally, as shown in fig. 2, an annular cavity 40 is formed between the outer flange 21 and the oil distributing barrel 11, a lubricating oil port 112 and an oil discharging port 113 extending radially are formed on the outer wall surface of the oil distributing barrel 11, and the lubricating oil port 112 and the oil discharging port 113 are communicated with the annular cavity 40.

In the disclosed embodiment, the outer diameter of the outer flange 21 is smaller than the inner diameter of the dispensing cartridge 11 such that an annular cavity 40 is formed between the outer flange 21 and the dispensing cartridge 11. Meanwhile, a lubrication oil port 112 is further formed in the outer wall surface of the oil distribution cylinder 11, and the lubrication oil port 112 is communicated with the annular cavity 40, so that lubricating oil is injected through the lubrication oil port 112, an oil film can be formed on the surface of the outer flange 21, which is abutted against the inner flange 111, and the surface of the outer flange 21, which is abutted against the oil distribution end cover 12, so that the outer flange 21 can rotate more easily relative to the oil distribution ring 10, and the sealing effect of the outer flange 21 and the oil distribution ring 10 can be ensured.

An oil discharge port 113 is also provided on the outer wall surface of the oil distribution cylinder 11, and the oil discharge port 113 is communicated with the annular cavity 40, so that excessive lubricating oil in the annular cavity 40 can be discharged through the oil discharge port 113.

In addition, when the sealing layer 51 between the outer flange 21 and the oil distribution end cover 12 fails, the annular cavity 40 can temporarily store part of leaked hydraulic oil and drain the hydraulic oil from the oil discharge port 113, so that the tightness of the outer flange 21 and the oil distribution ring 10 is improved.

Fig. 3 is a schematic structural view of an oil distribution ring 10 according to an embodiment of the present disclosure. As shown in fig. 2 and 3, the end surface of the inner flange 111 near the oil distribution end cover 12 and the end surface of the oil distribution end cover 12 near the inner flange 111 are both provided with grooves 52, the sealing layer 51 is located on the end surface of the inner flange 111 near the oil distribution end cover 12, and the sealing layer 51 extends into the grooves 52.

By providing the groove 52 on the end surface of the inner flange 111 near the oil distribution end cap 12, the sealing layer 51 extends into the groove 52, so that the sealing layer 51 is partially embedded into the inner flange 111, the sealing layer 51 is prevented from easily separating from the surface of the inner flange 111, and the reliability is improved.

By providing the groove 52 on the end face of the oil distribution end cover 12 near the inner flange 111, the sealing layer 51 extends into the groove 52, so that the sealing layer 51 is partially embedded into the oil distribution end cover 12, the sealing layer 51 is prevented from easily separating from the end face of the oil distribution end cover 12, and reliability is improved.

Illustratively, the sealing layer 51 is a babbitt layer.

Wherein, the Babbitt metal is a low-melting point bearing alloy with hard particle phases distributed on a soft substrate. The babbitt alloy has antifriction properties, facilitates relative rotation of the inner flange 111 and the seal ring, and enhances wear resistance of the seal layer 51.

For example, the babbitt alloy may include 3% to 15% antimony, 2% to 6% copper, less than 1% cadmium, and the balance tin by mass.

Alternatively, the thickness of the sealing layer 51 is 2mm to 3mm.

By setting the thickness of the seal layer 51 within the above range, it is possible to avoid excessive thickness of the seal layer 51, which would excessively compress the outer flange 21 and the inner flange 111, and the gap between the outer flange 21 and the oil distribution end cap 12, so that the outer flange 21 is not easily rotated in the oil distribution ring 10. It is also possible to avoid that the thickness of the sealing layer 51 is too thin, which may cause the sealing layer 51 to fail in sealing effect.

Illustratively, the thickness of the sealing layer 51 may be 2.5mm.

Illustratively, the end face of the inner flange 111 adjacent the oil distribution end cap 12 is spaced from the end face of the outer flange 21 by a distance of 0.03mm to 0.06mm.

For example, the distance between the end face of the inner flange 111 adjacent to the oil distribution end cap 12 and the end face of the outer flange 21 is 0.05mm.

Illustratively, the oil distribution end cap 12 has a spacing of 0.03mm to 0.06mm from the end face of the outer flange 21 proximate the inner flange 111.

For example, the distance between the end face of the oil distribution end cap 12 near the inner flange 111 and the end face of the outer flange 21 is 0.05mm.

By setting the distance between the end face of the inner flange 111, which is close to the oil distribution end cover 12, and the end face of the outer flange 21 within the above range, when hydraulic oil leaks into the gap between the inner flange 111 and the oil distribution ring 10, a part of hydraulic oil can be allowed to leak from the gap, the leakage amount is controlled by controlling the size of the gap, and the hydraulic power provided by the hydraulic device is ensured to meet the requirements of the pitch time and the pitch pressure design value of the pitch control propeller. Meanwhile, the oil distributing ring 10 moves together with the piston of the variable-pitch oil cylinder in the axial direction, and the stroke of the oil cylinder piston can be fed back through the axial position of the oil distributing ring 10.

Alternatively, as shown in fig. 2 and 3, the end face of the other end of the oil distributing cylinder 11 is provided with an annular protrusion 114, the annular protrusion 114 is coaxially connected with the oil distributing cylinder 11, and the end face of the oil distributing end cover 12, which is close to the oil distributing cylinder 11, is provided with an annular groove 121 matched with the annular protrusion 114.

Wherein, the outer diameter of the annular bulge 114 is the same as the outer diameter of the oil distributing cylinder 11, and the inner diameter of the annular bulge 114 is larger than the inner diameter of the oil distributing cylinder 11. I.e. the annular protrusion 114 is provided at the peripheral edge of the end of the dispensing cartridge 11. Accordingly, an annular groove 121 is also provided at the peripheral edge of the end face of the oil distribution end cap 12.

By arranging the annular protrusion 114 to be matched with the annular groove 121, the oil distribution cylinder 11 and the oil distribution end cover 12 are clamped together, so that the oil distribution cylinder 11 and the oil distribution end cover 12 can be quickly positioned during assembly.

As shown in fig. 2 and 3, the annular protrusion 114 is located in the annular groove 121, the adjusting washer 30 is annular, and the adjusting washer 30 is located between the end surface of the annular protrusion 114 and the bottom of the annular groove 121.

In the above-described implementation, the tuning washer 30 is provided in a ring shape such that the tuning washer 30 can be just fitted into the annular groove 121 to reduce the interval between the annular protrusion 114 and the annular groove 121 as a whole.

Illustratively, the adjustment shim 30 may be a rubber pad. The rubber pad has good wear resistance, and is advantageous in maintaining the interval between the end surface of the annular protrusion 114 and the bottom of the annular groove 121.

Optionally, as shown in fig. 2, the oil distribution seal assembly further includes a screw 60, the annular groove 121 has a through hole penetrating the oil distribution end cap 12, the annular protrusion 114 has a screw hole corresponding to the through hole, and the screw 60 is connected to the screw hole through the through hole and the adjustment gasket 30 in sequence.

Illustratively, as shown in FIG. 2, the oil distribution end cap 12 includes an end cap and a connecting shaft coaxially connected, the end cap having an outer diameter greater than the outer diameter of the connecting shaft and an axial length less than the axial length of the connecting shaft.

In the above implementation manner, the oil distribution cylinder 11 and the oil distribution end cover 12 are detachably connected by using the screw 60, and the screw 60 is convenient to disassemble and assemble, so that the adjusting gasket 30 is also convenient to replace.

Alternatively, as shown in fig. 2, the oil distribution stub 20 has two first oil passages 200 extending from one end to the other, the oil distribution end cap 12 has second oil passages 120 in one-to-one correspondence with the first oil passages 200, the second oil passages 120 axially penetrate the oil distribution end cap 12, and the second oil passages 120 communicate with the corresponding first oil passages 200.

The second oil passage 120 on the oil distribution end cap 12 is an oil passage for connecting with a hydraulic system to inject hydraulic oil into the oil distributor. I.e. an oil path for injecting hydraulic oil from the outside into the oil distributor.

The second oil path 120 extends from one end of the oil distribution end cover 12 to the other end, that is, the second oil path 120 penetrates through the oil distribution end cover 12 and is in coaxial butt joint with the corresponding first oil path 200 in the oil distribution short column 20, so that the injected hydraulic oil can enter the first oil path 200, and the first oil path 200 is communicated with the distance-changing oil cylinder, and therefore the purpose of injecting the hydraulic oil into the oil distribution ring 10 to drive the distance-changing oil cylinder to act is achieved.

Illustratively, as shown in fig. 2, the aperture of the end of the second oil passage 120 near the oil distribution stub 20 is larger than the aperture of the second oil passage 120, and the aperture of the end of the second oil passage 120 near the oil distribution stub 20 is also larger than the aperture of the first oil passage 200. Thus, the aperture of one end of the second oil path 120 butted with the first oil path 200 is enlarged, which is beneficial to injecting hydraulic oil into the first oil path 200, and the problem of leakage of hydraulic oil due to unmatched aperture of the second oil path 120 and aperture of the first oil path 200 is solved.

Fig. 4 is a side view of an oil distribution ring 10 provided by an embodiment of the present disclosure. As shown in fig. 3 and 4, two second oil passages 120 are spaced in parallel, and the central axis of one second oil passage 120 coincides with the central axis of the oil distribution end cover 12.

As shown in fig. 3 and 4, the end face of the oil distribution end cover 12, which is close to the oil distribution short column 20, is provided with an annular counter bore 122, the radius of the annular counter bore 122 is the same as the distance between the central axes of the two second oil passages 120, and one end of the other second oil passage 120 is communicated with the annular counter bore 122.

Thus, when the oil distribution short column 20 rotates along with the shaft of the adjustable pitch propeller in the working process, the end part of the first oil way 200 deviating from the oil distribution short column 20 is always in the annular counter bore 122 in the rotating process, namely, the first oil way 200 is always opposite to the annular counter bore 122, so that the hydraulic oil in the second oil way 120 can be smoothly conveyed into the first oil way 200 in the rotating process of the oil distribution short column 20.

Embodiments of the present disclosure provide an oil dispenser that includes an oil dispensing seal assembly as previously described.

The oil distributing ring 10 of the oil distributing sealing assembly comprises an oil distributing cylinder 11 and an oil distributing end cover 12, one end of the oil distributing cylinder 11 is provided with an inner flange 111, the oil distributing end cover 12 is covered on the other end of the oil distributing cylinder 11, thus the oil distributing cylinder 11 and the oil distributing end cover 12 form a cavity, one end of an oil distributing short column 20 is inserted into the oil distributing cylinder 11, an outer flange 21 of the oil distributing short column 20 is positioned in the cavity, and the outer flange 21 of the oil distributing short column 20 is propped against the end face of the inner flange 111 and the oil distributing end cover 12. Since the seal layer 51 is provided on the end surface of the inner flange 111 and the end surface of the oil distribution cap 12, an effective seal effect can be obtained when the outer flange 21 rotates with respect to the oil distribution cylinder 11.

After the seal layer 51 is worn, the worn thickness of the seal layer 51 may be compensated by changing the smaller thickness adjustment gasket 30 so that the distance between the end face of the inner flange 111 and the end face of the oil distribution end cap 12 is reduced, so that the end face of the inner flange 111 and the end face of the oil distribution end cap 12 can maintain a sliding seal with the end face of the outer flange 21.

Since the sealing layer 51 is not required to be repaired, and the oil distribution ring 10 is split into the oil distribution cylinder 11 and the oil distribution end cover 12, the oil distribution end cover 12 is only required to be disassembled and the adjusting gaskets 30 with different thicknesses are required to be replaced during maintenance, and the oil distribution ring 10 is not required to be completely removed from the oil distributor. Therefore, the step of repairing the seal layer 51 can be effectively simplified, and the maintenance difficulty of the oil distribution seal assembly can be reduced.

The foregoing disclosure is not intended to be limited to any form of embodiment, but is not intended to limit the disclosure, and any simple modification, equivalent changes and adaptations of the embodiments according to the technical principles of the disclosure are intended to be within the scope of the disclosure, as long as the modifications or equivalent embodiments are possible using the technical principles of the disclosure without departing from the scope of the disclosure.

Claims (10)

1. An oil distribution seal assembly, comprising: an oil distribution ring (10), an oil distribution short column (20) and an adjusting gasket (30);

The oil distribution ring (10) comprises an oil distribution cylinder (11) and an oil distribution end cover (12), an inner flange (111) is arranged at one end of the oil distribution cylinder (11), the oil distribution end cover (12) is arranged at the other end of the oil distribution cylinder (11) in a covering mode, the adjusting gasket (30) is clamped between the end face of the oil distribution end cover (12) and the other end of the oil distribution cylinder (11), the oil distribution end cover (12) is detachably connected with the oil distribution cylinder (11), and sealing layers (51) are arranged on the end face, close to the oil distribution end cover (12), of the inner flange (111) and the end face, close to the inner flange (111), of the oil distribution end cover (12);

one end of the oil distribution short column (20) is inserted into the oil distribution cylinder (11), an outer flange (21) is arranged at one end of the oil distribution short column (20), the outer flange (21) is positioned in a cavity surrounded by the inner flange (111), the oil distribution cylinder (11) and the oil distribution end cover (12), and two ends of the outer flange (21) are respectively propped against the end face of the inner flange (111) and the oil distribution end cover (12).

2. The oil distribution sealing assembly according to claim 1, characterized in that an annular cavity (40) is formed between the outer flange (21) and the oil distribution cylinder (11), a radially extending lubricating oil port (112) and an oil discharge port (113) are formed on the outer wall surface of the oil distribution cylinder (11), and the lubricating oil port (112) and the oil discharge port (113) are communicated with the annular cavity (40).

3. The oil distribution seal assembly according to claim 1, characterized in that the end face of the inner flange (111) close to the oil distribution end cap (12) and the end face of the oil distribution end cap (12) close to the inner flange (111) are both provided with grooves (52), and the sealing layer (51) is located at the end face of the inner flange (111) close to the oil distribution end cap (12) and extends into the grooves (52).

4. A dosing oil seal assembly according to claim 3, characterized in that the sealing layer (51) is a babbitt layer.

5. An oil distribution seal assembly according to claim 1, characterized in that the thickness of the sealing layer (51) is 2mm to 3mm.

6. The oil distribution seal assembly according to any of claims 1 to 5, characterized in that the distance between the end face of the inner flange (111) adjacent to the oil distribution end cap (12) and the end face of the outer flange (21) is 0.03mm to 0.06mm;

The distance between the end face of the oil distribution end cover (12) close to the inner flange (111) and the end face of the outer flange (21) is 0.03mm to 0.06mm.

7. The oil distribution seal assembly according to any one of claims 1 to 5, characterized in that an end face of the other end of the oil distribution cylinder (11) is provided with an annular protrusion (114), the annular protrusion (114) is coaxially connected with the oil distribution cylinder (11), and an annular groove (121) matched with the annular protrusion (114) is arranged on the end face of the oil distribution end cover (12) close to the oil distribution cylinder (11);

the annular bulge (114) is positioned in the annular groove (121), the adjusting gasket (30) is annular, and the adjusting gasket (30) is positioned between the end face of the annular bulge (114) and the bottom of the annular groove (121).

8. The oil distribution seal assembly according to any one of claims 1 to 5, wherein the oil distribution stub (20) has two first oil passages (200) extending from one end to the other end, the oil distribution end cap (12) has second oil passages (120) in one-to-one correspondence with the first oil passages (200), the second oil passages (120) axially extend through the oil distribution end cap (12), the second oil passages (120) communicating with the corresponding first oil passages (200).

9. The oil distribution seal assembly of claim 8, wherein two of said second oil passages (120) are spaced in parallel, the central axis of one of said second oil passages (120) coinciding with the central axis of said oil distribution end cap (12);

The end face, close to the oil distribution short column (20), of the oil distribution end cover (12) is provided with an annular counter bore (122), the radius of the annular counter bore (122) is the same as the distance between the central axes of the two second oil ways (120), and one end of the other second oil way (120) is communicated with the annular counter bore (122).

10. An oil dispenser comprising an oil dispensing seal assembly according to any one of claims 1 to 9.