Oil distribution seal assembly and oil distributor

Abstract

The present disclosure provides an oil distribution sealing assembly and an oil distributor, and belongs to the technical field of ship propulsion. The oil distribution sealing assembly comprises an oil distribution ring, an oil distribution stub 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, and the other end of the oil distribution cylinder is covered by the oil distribution end cover. 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. The end face of the inner flange close to the oil distribution end cover and the end face of the oil distribution end cover close to the inner flange are both provided with a sealing layer. One end of the oil distribution stub is inserted into the oil distribution cylinder. The one end of the oil distribution stub is provided with an outer flange. The outer flange is located in a cavity surrounded by the inner flange, the oil distribution cylinder and the oil distribution end cover. The two ends of the outer flange respectively abut against the end face of the inner flange and the oil distribution end cover. The present disclosure can simplify the step of repairing the sealing layer and reduce the maintenance difficulty of the oil distribution sealing assembly.

Description

Technical Field

[0001] This disclosure relates to the field of marine propulsion technology, and in particular to an oil distribution sealing assembly and an oil distributor. Background Technology

[0002] The distributor is the core component of the controllable pitch propeller propulsion system, serving as the mechanism for distributing high and low pressure hydraulic oil to the controllable pitch propeller. When the distributor is operating, hydraulic oil is injected into the pitch cylinder of the controllable pitch propeller through its injection port, causing the piston inside the cylinder to reciprocate and thus change the pitch of the controllable pitch propeller in either forward or reverse direction. The most important component of the distributor is the oil distribution sealing assembly, which is a high-speed rotating, high-pressure sealing pair.

[0003] In related technologies, the oil distribution sealing assembly includes an oil distribution ring and an oil distribution short post, with the short post coaxially inserted into the inner bore of the oil distribution ring. The short post has two axially extending oil holes, which are respectively connected to the forward and reverse oil chambers of the pitch control propeller's pitch cylinder. The oil distribution ring has two annular oil chambers, which are connected to the two oil holes via radial holes on the short post. These annular oil chambers are then connected to the hydraulic system via oil inlets.

[0004] To prevent oil leakage from the annular oil chamber through the gap between the inner hole of the distribution ring and the outer wall of the distribution pin, a sealing layer is usually installed between them. However, during operation, the distribution pin and the distribution ring rotate relative to each other. With prolonged use, the sealing layer gradually wears down, leading to a deterioration in the seal between the distribution ring and the distribution pin. Disassembling and reassembling the oil distribution sealing assembly to repair the sealing layer is a cumbersome process. Therefore, the maintenance of the oil distribution sealing assembly is quite difficult. Summary of the Invention

[0005] This disclosure provides an oil distribution sealing assembly and an oil distributor, which simplifies the steps for repairing the sealing layer and reduces the maintenance difficulty of the oil distribution sealing assembly. The technical solution is as follows:

[0006] This disclosure provides an oil distribution sealing assembly, which includes an oil distribution ring, an oil distribution short column, and an adjusting shim. The oil distribution ring includes an oil distribution cylinder and an oil distribution end cap. One end of the oil distribution cylinder has an inner flange, and the oil distribution end cap covers the other end of the oil distribution cylinder. The adjusting shim is sandwiched between the end face of the oil distribution end cap and the other end of the oil distribution cylinder, and the oil distribution end cap is detachably connected to the oil distribution cylinder. The end face of the inner flange near the oil distribution end cap and the end face of the oil distribution end cap near the inner flange are both provided with sealing layers. One end of the oil distribution short column is inserted into the oil distribution cylinder, and one end of the oil distribution short column has an outer flange. The outer flange is located in the cavity formed by the inner flange, the oil distribution cylinder, and the oil distribution end cap, and both ends of the outer flange abut against the end face of the inner flange and the oil distribution end cap, respectively.

[0007] In one implementation of this disclosure, an annular cavity is provided between the outer flange and the oil distribution cylinder, and the outer wall surface of the oil distribution cylinder is provided with a radially extending lubricating oil port and an oil discharge port, both of which are connected to the annular cavity.

[0008] In another implementation of the present disclosure, the end face of the inner flange near the oil distribution end cap and the end face of the oil distribution end cap near the inner flange are both provided with grooves, and the sealing layer is located on the end face of the inner flange near the oil distribution end cap and extends into the groove.

[0009] In another implementation of the present disclosure, the sealing layer is a Babbitt alloy layer.

[0010] In another implementation of the present disclosure, the thickness of the sealing layer is 2 mm to 3 mm.

[0011] In another implementation of this disclosure, the distance between the end face of the inner flange near the oil distribution end cap and the end face of the outer flange is 0.03 mm to 0.06 mm; the distance between the end face of the oil distribution end cap near the inner flange and the end face of the outer flange is 0.03 mm to 0.06 mm.

[0012] In another implementation of this embodiment, the other end face of the oil distribution cylinder has an annular protrusion, the annular protrusion is coaxially connected to the oil distribution cylinder, and the end face of the oil distribution end cap near the oil distribution cylinder is provided with an annular groove that mates with the annular protrusion; the annular protrusion is located in the annular groove, the adjusting shim is annular, and the adjusting shim is located between the end face of the annular protrusion and the bottom of the annular groove.

[0013] In another implementation of the present disclosure, the oil distribution short column has two first oil passages extending from one end to the other, and the oil distribution end cap has a second oil passage corresponding to each of the first oil passages. The second oil passage axially penetrates the oil distribution end cap and is connected to the corresponding first oil passage.

[0014] In another implementation of this disclosure, two second oil passages are parallel and spaced apart, and the central axis of one second oil passage coincides with the central axis of the oil distribution end cap; the end face of the oil distribution end cap near the oil distribution short column has an annular countersunk hole, the radius of the annular countersunk hole is the same as the distance between the central axes of the two second oil passages, and one end of the other second oil passage is connected to the annular countersunk hole.

[0015] This disclosure provides an oil distributor that includes the oil distribution sealing assembly as described above.

[0016] The beneficial effects of the technical solutions provided in this disclosure include at least the following:

[0017] This embodiment of the oil distribution sealing assembly provides an oil distribution ring comprising an oil distribution cylinder and an oil distribution end cap. One end of the oil distribution cylinder has an inner flange, and the oil distribution end cap is fitted onto the other end of the oil distribution cylinder, thus forming a cavity. One end of a short oil distribution post is inserted into the oil distribution cylinder, and the outer flange of the short oil distribution post is located in the cavity, with the end face of the outer flange abutting against the end face of the inner flange and the oil distribution end cap. A sealing layer is provided on the end face of the inner flange and the end face of the oil distribution end cap; therefore, when the outer flange rotates relative to the oil distribution cylinder, an effective sealing effect is achieved.

[0018] Furthermore, after the sealing layer is worn, the gap between the end face of the inner flange and the end face of the oil distribution cap can be reduced by replacing the adjusting shim with a thinner one, thereby compensating for the thickness of the worn sealing layer, so that the end faces of the inner flange and the oil distribution cap can maintain a sliding seal with the end face of the outer flange.

[0019] Since there is no need to repair the sealing layer, and the distribution ring is disassembled into a distribution cylinder and a distribution end cap, maintenance only requires replacing the adjusting shims of different thicknesses by removing the distribution end cap; the distribution ring does not need to be completely removed from the distributor. Therefore, the steps for repairing the sealing layer are effectively simplified, and the maintenance difficulty of the distribution sealing assembly is reduced. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a structural schematic diagram of an oil distribution and sealing assembly provided by related technologies;

[0022] Figure 2 This is a schematic diagram of the structure of an oil distribution and sealing assembly provided in an embodiment of this disclosure;

[0023] Figure 3 This is a schematic diagram of the structure of an oil distribution ring provided in an embodiment of this disclosure;

[0024] Figure 4 This is a side view of an oil distribution ring provided in an embodiment of this disclosure.

[0025] The markings in the diagram are explained as follows:

[0026] 10. Oil distribution ring;

[0027] 11. Oil distribution cylinder; 111. Inner flange; 112. Lubricating oil port; 113. Oil discharge port; 114. Annular protrusion;

[0028] 12. Oil distribution end cap; 120. Second oil passage; 121. Annular groove; 122. Annular countersunk hole;

[0029] 20. Oil distribution short column; 200. First oil circuit;

[0030] 21. Outer flange;

[0031] 30. Adjust the shims;

[0032] 40. Annular cavity;

[0033] 51. Sealing layer; 52. Groove;

[0034] 60. Screws. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0036] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” “top,” and “bottom,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0037] Figure 1 This is a structural schematic diagram of an oil distribution and sealing assembly provided by related technologies. For example... Figure 1 As shown, the oil distribution sealing assembly includes an oil distribution ring 10 and an oil distribution short column 20.

[0038] The oil distribution stub 20 is connected to the oil pipe in the controllable pitch propeller's central shaft system and rotates with the propeller. An oil hole A is drilled inside the oil distribution stub 20. (The text abruptly ends here.) Figure 1As shown, the two oil holes A of the oil distribution short column 20 are connected to the forward and reverse oil chambers of the pitch cylinder through the inner and outer cavities of the inner oil pipe of the shaft, respectively.

[0039] like Figure 1 As shown, the two oil holes of the distribution short column 20 are also drilled in the radial direction so that the two oil holes A can communicate with the two annular oil chambers B of the distribution ring 10. The distribution ring 10 is also drilled with two oil injection holes that are respectively connected to the two annular oil chambers B. The two oil injection ports are respectively connected to the hydraulic system, and hydraulic oil is injected into the annular oil chambers of the distribution ring 10 through the hydraulic system.

[0040] Since the distributor short column 20 rotates together with the propeller, while the distributor ring 10 and the hydraulic system are stationary relative to the hull, the distributor short column 20 and the distributor ring 10 will rotate relative to each other.

[0041] like Figure 1 As shown, a sealing layer 51 is provided in the area where the inner wall and end faces of the distribution ring 10 mate with the outer wall and inner end faces of the distribution short column 20. The distribution short column 20 and the distribution ring 10 undergo sliding friction under the immersion of hydraulic oil, forming a distribution sealing pair.

[0042] However, with prolonged use of the distributor, the sealing layer 51 on the distributor ring 10 will gradually wear down, eventually leading to an excessive gap between the distributor short column 20 and the distributor ring 10, resulting in excessive hydraulic oil leakage. This prevents the controllable pitch propeller from functioning properly. In this case, the distributor ring 10 must be removed to repair the sealing layer 51 and machined, a process that is quite tedious and difficult to maintain.

[0043] Therefore, this disclosure provides an oil distribution sealing assembly. Figure 2 This is a schematic diagram of the structure of an oil distribution and sealing assembly provided in an embodiment of this disclosure. Figure 2 As shown, the oil distribution sealing assembly includes: an oil distribution ring 10, an oil distribution short column 20, and an adjusting shim 30.

[0044] like Figure 2 As shown, 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 placed over the other end of the oil distribution cylinder 11. An adjusting shim 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 to the oil distribution cylinder 11. Both the end face of the inner flange 111 near the oil distribution end cap 12 and the end face of the oil distribution end cap 12 near the inner flange 111 are provided with sealing layers 51.

[0045] like Figure 2 As shown, one end of the oil distribution short column 20 is inserted into the oil distribution cylinder 11. One end of the oil distribution short column 20 is provided with an outer flange 21, which is located in the cavity formed by the inner flange 111, the oil distribution cylinder 11, and the oil distribution end cap 12.

[0046] The inner diameter of the inner flange 111 is smaller than the outer diameter of the outer flange 21. When the outer flange 21 is placed in the cavity formed by the inner flange 111, the oil distribution cylinder 11, and the oil distribution end cap 12, the two ends of the outer flange 21 can abut against the end face of the inner flange 111 and the oil distribution end cap 12 respectively, so as to prevent the outer flange 21 from sliding out of the cavity.

[0047] This embodiment of the oil distribution sealing assembly provides an oil distribution ring 10 including an oil distribution cylinder 11 and an oil distribution end cap 12. One end of the oil distribution cylinder 11 has an inner flange 111, and the oil distribution end cap 12 is fitted onto the other end of the oil distribution cylinder 11, thus forming a cavity. One end of an oil distribution short column 20 is inserted into the oil distribution cylinder 11, and the outer flange 21 of the oil distribution short column 20 is located in the cavity, and the outer flange 21 of the oil distribution short column 20 abuts against the end face of the inner flange 111 and the oil distribution end cap 12. A sealing layer 51 is provided on the end face of the inner flange 111 and the end face of the oil distribution end cap 12. Therefore, when the outer flange 21 rotates relative to the oil distribution cylinder 11, an effective sealing effect can be formed.

[0048] Furthermore, after the sealing layer 51 is worn, the gap between the end face of the inner flange 111 and the end face of the oil distribution end cap 12 can be reduced by replacing the adjusting shim 30 with a thinner one, thereby compensating for the thickness of the worn sealing layer 51, so that the end faces of the inner flange 111 and the oil distribution end cap 12 can maintain a sliding seal with the end face of the outer flange 21.

[0049] Since there is no need to repair the sealing layer 51, and the oil distribution ring 10 is disassembled into the oil distribution cylinder 11 and the oil distribution end cap 12, maintenance only requires replacing the adjusting shims 30 of different thicknesses with the oil distribution end cap 12, without completely removing the oil distribution ring 10 from the oil distributor. Therefore, the steps for repairing the sealing layer 51 can be effectively simplified, and the maintenance difficulty of the oil distribution sealing assembly can be reduced.

[0050] Optionally, such as Figure 2 As shown, there is an annular cavity 40 between the outer flange 21 and the oil distribution cylinder 11. The outer wall surface of the oil distribution cylinder 11 is provided with a radially extending lubricating oil port 112 and an oil discharge port 113, both of which are connected to the annular cavity 40.

[0051] In this embodiment, the outer diameter of the outer flange 21 is smaller than the inner diameter of the oil distribution cylinder 11, so that an annular cavity 40 is formed between the outer flange 21 and the oil distribution cylinder 11. Simultaneously, a lubricating oil port 112 is provided on the outer wall of the oil distribution cylinder 11, which communicates with the annular cavity 40. Lubricating oil is injected through the lubricating oil port 112, forming an oil film on the surfaces where the outer flange 21 and the inner flange 111 abut, and on the surfaces where the outer flange 21 and the oil distribution end cap 12 abut. This allows the outer flange 21 to rotate more easily relative to the oil distribution ring 10 while ensuring a sealing effect between the outer flange 21 and the oil distribution ring 10.

[0052] An oil discharge port 113 is provided on the outer wall of the oil distribution cylinder 11. The oil discharge port 113 is connected to the annular cavity 40, so that excess lubricating oil in the annular cavity 40 can be discharged through the oil discharge port 113.

[0053] Furthermore, when the sealing layer 51 between the outer flange 21 and the oil distribution end cap 12 fails, the annular cavity 40 can also temporarily store some of the leaked hydraulic oil and drain the hydraulic oil from the oil discharge port 113, thereby improving the sealing performance of the outer flange 21 and the oil distribution ring 10.

[0054] Figure 3 This is a schematic diagram of the structure of an oil distribution ring 10 provided in an embodiment of this disclosure. Figure 2 , 3 As shown, the inner flange 111 near the oil distribution end cap 12 and the oil distribution end cap 12 near the inner flange 111 are both provided with grooves 52. The sealing layer 51 is located on the inner flange 111 near the oil distribution end cap 12 and extends into the groove 52.

[0055] By providing a groove 52 on the end face 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 in the inner flange 111, thus preventing the sealing layer 51 from easily detaching from the surface of the inner flange 111 and improving reliability.

[0056] By providing a groove 52 on the end face of the oil distribution end cap 12 near the inner flange 111, the sealing layer 51 extends into the groove 52, so that the sealing layer 51 is partially embedded in the oil distribution end cap 12, thus preventing the sealing layer 51 from easily detaching from the end face of the oil distribution end cap 12 and improving reliability.

[0057] For example, the sealing layer 51 is a Babbitt alloy layer.

[0058] Babbitt metal is a low-melting-point bearing alloy with hard particle phases distributed in a soft matrix. Babbitt metal has anti-friction properties, making it easier for the inner flange 111 and the sealing ring to rotate relative to each other, and improving the wear resistance of the sealing layer 51.

[0059] For example, Babbitt metal may include 3% to 15% antimony, 2% to 6% copper, less than 1% cadmium, and the balance tin.

[0060] Optionally, the thickness of the sealing layer 51 is 2 mm to 3 mm.

[0061] By setting the thickness of the sealing layer 51 within the aforementioned range, it is possible to avoid the sealing layer 51 being too thick, which would excessively compress the outer flange 21 and the inner flange 111, as well as the gap between the outer flange 21 and the oil distribution end cap 12, making it difficult for the outer flange 21 to rotate within the oil distribution ring 10. It also avoids the sealing layer 51 being too thin, which would prevent the sealing layer 51 from achieving a sealing effect.

[0062] For example, the thickness of the sealing layer 51 may be 2.5 mm.

[0063] For example, the distance between the end face of the inner flange 111 near the oil distribution end cap 12 and the end face of the outer flange 21 is 0.03 mm to 0.06 mm.

[0064] For example, the distance between the end face of the inner flange 111 near the oil distribution end cap 12 and the end face of the outer flange 21 is 0.05 mm.

[0065] 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 0.03 mm to 0.06 mm.

[0066] 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 0.05 mm.

[0067] By setting the distance between the end face of the inner flange 111 near the oil distribution end cap 12 and the end face of the outer flange 21 within the aforementioned range, when hydraulic oil leaks into the gap between the inner flange 111 and the oil distribution ring 10, a portion of the hydraulic oil is allowed to leak through the gap. The leakage amount is controlled by controlling the size of the gap, ensuring that the hydraulic power provided by the hydraulic device can meet the design requirements of the pitch change time and pitch change pressure of the controllable pitch propeller. At the same time, the oil distribution ring 10 moves together with the piston of the pitch change cylinder in the axial direction, and the piston stroke of the cylinder can be fed back through the axial position of the oil distribution ring 10.

[0068] Optionally, such as Figure 2 , 3 As shown, the end face of the other end of the oil distribution cylinder 11 has an annular protrusion 114, which is coaxially connected to the oil distribution cylinder 11. The end face of the oil distribution end cap 12 near the oil distribution cylinder 11 is provided with an annular groove 121 that mates with the annular protrusion 114.

[0069] The annular protrusion 114 has the same outer diameter as the oil distribution cylinder 11, while its inner diameter is larger than that of the oil distribution cylinder 11. That is, the annular protrusion 114 is located on the peripheral edge of the end of the oil distribution cylinder 11. Correspondingly, the annular groove 121 is also located on the peripheral edge of the end face of the oil distribution end cap 12.

[0070] By setting the annular protrusion 114 and the annular groove 121 to cooperate, the oil distribution cylinder 11 and the oil distribution end cap 12 are snapped together, so that the oil distribution cylinder 11 and the oil distribution end cap 12 can be quickly positioned during assembly.

[0071] like Figure 2 , 3 As shown, the annular protrusion 114 is located inside the annular groove 121, and the adjusting shim 30 is annular, located between the end face of the annular protrusion 114 and the bottom of the annular groove 121.

[0072] In the above implementation, the adjusting shim 30 is set to be annular, so that the adjusting shim 30 can be installed exactly in the annular groove 121, thereby reducing the overall distance between the annular protrusion 114 and the annular groove 121.

[0073] For example, the adjusting shim 30 can be a rubber pad. The rubber pad has good abrasion resistance, which helps to maintain the distance between the end face of the annular protrusion 114 and the bottom of the annular groove 121.

[0074] Optionally, such as Figure 2 As shown, the oil distribution sealing assembly also includes a screw 60, an annular groove 121 has a through hole that passes through the oil distribution end cap 12, and an annular protrusion 114 has a screw hole corresponding to the through hole. The screw 60 passes through the through hole, the adjusting shim 30 and the screw hole in sequence.

[0075] For example, such as Figure 2 As shown, the oil distribution end cap 12 includes an end cap and a connecting shaft that are coaxially connected. The outer diameter of the end cap is larger than the outer diameter of the connecting shaft, and the axial length of the end cap is smaller than the axial length of the connecting shaft.

[0076] In the above implementation, the oil distribution cylinder 11 and the oil distribution end cap 12 are detachably connected by screws 60. Since screws 60 are easy to install and remove, it is also convenient to replace the adjusting shim 30.

[0077] Optionally, such as Figure 2 As shown, the oil distribution short column 20 has two first oil passages 200 extending from one end to the other, and the oil distribution end cap 12 has a second oil passage 120 corresponding to the first oil passages 200. The second oil passage 120 axially penetrates the oil distribution end cap 12 and is connected to the corresponding first oil passage 200.

[0078] The second oil passage 120 on the distributor end cap 12 is used to connect to the hydraulic system to inject hydraulic oil into the distributor. That is, it is an oil passage that injects hydraulic oil from the outside into the distributor.

[0079] The second oil passage 120 extends from one end of the oil distribution end cap 12 to the other end, that is, the second oil passage 120 passes through the oil distribution end cap 12 and is coaxially connected with the corresponding first oil passage 200 in the oil distribution short column 20, so that the injected hydraulic oil can enter the first oil passage 200, and the first oil passage 200 is connected to the pitch cylinder. Therefore, the purpose of injecting hydraulic oil into the oil distribution ring 10 to drive the pitch cylinder to move is achieved.

[0080] For example, such as Figure 2 As shown, the orifice diameter at the end of the second oil passage 120 near the distribution column 20 is larger than the total orifice diameter of the first oil passage 200. This enlargement of the orifice diameter at the end of the second oil passage 120 that connects to the first oil passage 200 facilitates the injection of hydraulic oil into the first oil passage 200, mitigating the problem of hydraulic oil leakage caused by the mismatch between the orifice diameters of the second and first oil passages.

[0081] Figure 4 This is a side view of an oil distribution ring 10 provided in an embodiment of this disclosure. (See image below.) Figure 3 , 4 As shown, two second oil passages 120 are parallel and spaced apart, and the central axis of one second oil passage 120 coincides with the central axis of the oil distribution end cap 12.

[0082] like Figure 3 , 4 As shown, the end face of the oil distribution end cap 12 near the oil distribution short column 20 has an annular countersunk hole 122. The radius of the annular countersunk hole 122 is the same as the distance between the central axes of the two second oil passages 120. One end of the other second oil passage 120 is connected to the annular countersunk hole 122.

[0083] In this way, when the oil distribution short column 20 rotates together with the controllable pitch propeller shaft during operation, the end of the first oil passage 200, which is offset from the oil distribution short column 200, is always inside the annular countersunk hole 122 during rotation. That is, the first oil passage 200 is always opposite to the annular countersunk hole 122, thereby ensuring that the hydraulic oil in the second oil passage 120 can be smoothly delivered to the first oil passage 200 during the rotation of the oil distribution short column 20.

[0084] This disclosure provides an oil distributor that includes an oil distribution sealing assembly as described above.

[0085] The oil distribution ring 10 of the oil distribution sealing assembly includes an oil distribution cylinder 11 and an oil distribution end cap 12. One end of the oil distribution cylinder 11 has an inner flange 111, and the oil distribution end cap 12 is fitted onto the other end of the oil distribution cylinder 11, thus forming a cavity. One end of the oil distribution short column 20 is inserted into the oil distribution cylinder 11, and the outer flange 21 of the oil distribution short column 20 is located in the cavity, and the outer flange 21 of the oil distribution short column 20 abuts against the end face of the inner flange 111 and the oil distribution end cap 12. A sealing layer 51 is provided on the end face of the inner flange 111 and the end face of the oil distribution end cap 12. Therefore, when the outer flange 21 rotates relative to the oil distribution cylinder 11, an effective sealing effect can be formed.

[0086] Furthermore, after the sealing layer 51 is worn, the gap between the end face of the inner flange 111 and the end face of the oil distribution end cap 12 can be reduced by replacing the adjusting shim 30 with a thinner one, thereby compensating for the thickness of the worn sealing layer 51, so that the end faces of the inner flange 111 and the oil distribution end cap 12 can maintain a sliding seal with the end face of the outer flange 21.

[0087] Since there is no need to repair the sealing layer 51, and the oil distribution ring 10 is disassembled into the oil distribution cylinder 11 and the oil distribution end cap 12, maintenance only requires replacing the adjusting shims 30 of different thicknesses with the oil distribution end cap 12, without completely removing the oil distribution ring 10 from the oil distributor. Therefore, the steps for repairing the sealing layer 51 can be effectively simplified, and the maintenance difficulty of the oil distribution sealing assembly can be reduced.

[0088] The above is not intended to limit this disclosure in any way. Although this disclosure has been disclosed above through embodiments, it is not intended to limit this disclosure. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this disclosure. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this disclosure without departing from the content of the technical solution of this disclosure shall still fall within the scope of the technical solution of this disclosure.

Claims

1. An oil distribution and sealing assembly, characterized in that, The oil distribution sealing assembly includes: an oil distribution ring (10), an oil distribution short column (20), and an adjusting shim (30); 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). The oil distribution end cap (12) covers the other end of the oil distribution cylinder (11). The adjusting shim (30) is sandwiched between the end face of the oil distribution end cap (12) and the other end of the oil distribution cylinder (11). The oil distribution end cap (12) is detachably connected to the oil distribution cylinder (11). The end face of the inner flange (111) near the oil distribution end cap (12) and the end face of the oil distribution end cap (12) near the inner flange (111) are both provided with a sealing layer (51). One end of the oil distribution short column (20) is inserted into the oil distribution cylinder (11). One end of the oil distribution short column (20) is provided with an outer flange (21). The outer flange (21) is located in the cavity formed by the inner flange (111), the oil distribution cylinder (11), and the oil distribution end cap (12). The two ends of the outer flange (21) abut against the end face of the inner flange (111) and the oil distribution end cap (12), respectively.

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

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

4. The oil distribution and sealing assembly according to claim 3, characterized in that, The sealing layer (51) is a Babbitt alloy layer.

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

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

7. The oil distribution sealing assembly according to any one of claims 1 to 5, characterized in that, The other end of the oil distribution cylinder (11) has an annular protrusion (114), which is coaxially connected to the oil distribution cylinder (11). The oil distribution end cap (12) has an annular groove (121) that mates with the annular protrusion (114) on the end face near the oil distribution cylinder (11). The annular protrusion (114) is located within the annular groove (121), and the adjusting shim (30) is annular, located between the end face of the annular protrusion (114) and the bottom of the annular groove (121).

8. The oil distribution sealing assembly according to any one of claims 1 to 5, characterized in that, The oil distribution short column (20) has two first oil passages (200) extending from one end to the other end, and the oil distribution end cap (12) has a second oil passage (120) corresponding to the first oil passages (200) one by one. The second oil passage (120) axially penetrates the oil distribution end cap (12) and is connected to the corresponding first oil passage (200).

9. The oil distribution and sealing assembly according to claim 8, characterized in that, The two second oil passages (120) are parallel and spaced apart, and the central axis of one of the second oil passages (120) coincides with the central axis of the oil distribution end cap (12); The oil distribution end cap (12) has an annular countersunk hole (122) on the end face near the oil distribution short column (20). The radius of the annular countersunk hole (122) is the same as the distance between the central axes of the two second oil passages (120). One end of the other second oil passage (120) is connected to the annular countersunk hole (122).

10. An oil distributor, characterized in that, The oil distributor includes the oil distribution sealing assembly as described in any one of claims 1 to 9.

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