Retaining wall structure for preventing vent valve from spraying oil

Abstract

The utility model relates to the technical field of gearboxes, in particular to a retaining wall structure for preventing a vent valve from spraying oil. The device comprises a vent valve, and the vent valve is installed on the side portion, corresponding to a protrusion of a gearbox end cover, of a gearbox shell and faces the direction of a gear arranged in the gearbox shell. Oil retaining walls arranged in a splayed mode are arranged on the inner wall of the gearbox shell and comprise the retaining wall I and the retaining wall II which are both arranged in an arc shape, and the arc length of the retaining wall I is larger than that of the retaining wall II. The oil retaining walls which are arranged in a splayed mode are additionally arranged, no matter the gear rotates clockwise or anticlockwise, the arc-shaped retaining wall I can effectively block lubricating oil, most of the lubricating oil is accumulated on the outer side of the retaining wall I and falls down along the arc-shaped outer surface, the lubricating oil is prevented from splashing to the vent valve, and meanwhile the vent valve can smoothly release internal air pressure along the staggered notches between the retaining walls. The purpose of exhausting and decompressing is achieved.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, specifically to a baffle structure for preventing oil spraying from the vent valve. Background Technology

[0002] Conventional gearbox housings lack an oil baffle. When the gears rotate, oil inside the housing is splashed onto the inner wall. The vent valve is typically located on the outside of the housing, communicating with the inner wall, as shown in the gearbox vent sealing structure described in patent publication number CN204420061U. As gear speed increases, the pressure in the housing increases, and oil accumulates at the vent valve location. This oil can then be ejected through the vent valve, causing leakage. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a baffle structure to prevent oil spraying from the vent valve.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A baffle structure for preventing oil spraying from a vent valve includes a vent valve, which is installed on the side of the gearbox housing corresponding to the protrusion of the gearbox end cover and is oriented toward the gear inside the gearbox housing; an oil baffle with a figure-eight layout is provided on the inner wall of the gearbox housing, the oil baffle including baffle I and baffle II, both of which are arc-shaped, wherein the arc length of baffle I is greater than that of baffle II.

[0006] This technical solution adds an oil baffle wall, replacing it with a figure-eight shaped baffle wall I and baffle wall II. Regardless of whether the gear rotates clockwise or counterclockwise, the arc-shaped baffle wall I can block it, thus placing baffle wall II within the protection range of baffle wall I. This ensures that most of the lubricating oil is blocked onto the outer surface of baffle wall I, allowing the internal air pressure of the vent valve to be released smoothly. This effectively prevents oil from splashing onto the vent valve, avoiding oil spraying from the vent valve, and also achieves the purpose of venting and pressure reduction.

[0007] In addition, the baffle structure for preventing oil spraying from the vent valve proposed above according to this utility model may also have the following additional technical features:

[0008] According to one embodiment of the present invention, the oil baffle and the gearbox housing are integrally cast.

[0009] In this technical solution, the oil baffle is cast together with the gearbox housing, eliminating the need for machining and reducing processing difficulty.

[0010] According to one embodiment of this utility model, the oil baffle is divided into two types based on the rotation direction of the gear assembly:

[0011] When the gear rotates clockwise, retaining wall I is positioned above retaining wall II, forming a type A oil retaining wall structure;

[0012] When the gear rotates counterclockwise, retaining wall I is located below retaining wall II, forming a type B oil retaining wall structure.

[0013] In this technical solution, the gear rotates and agitates the lubricating oil. As the gear rotates, the lubricating oil is thrown out along the tangent. With the use of type A or type B oil baffle structure, the oil is blocked by baffle I and cannot enter the vent valve.

[0014] According to one embodiment of the present invention, a misaligned notch is provided between the retaining wall I and the retaining wall II, and the vent valve releases internal air pressure along the misaligned notch to prevent oil from splashing onto the vent valve from the gear.

[0015] In this technical solution, the internal air pressure is the pressure generated within the cavity of the gearbox housing as the gear speed increases. As the internal pressure increases, the excess pressure needs to be released through a vent valve connecting the cavity. Furthermore, the misalignment notch, protected by retaining walls I and II, will prevent oil from spraying out of the vent valve and thus avoid oil leakage.

[0016] According to one embodiment of the present invention, the retaining wall II is within the protection range of the retaining wall I.

[0017] In this technical solution, the arch formed by the curved bend of retaining wall I completely covers the area where retaining wall II is located, thus providing protection for retaining wall II from both sides.

[0018] According to one embodiment of the present invention, the lubricating oil thrown out by the gear during operation accumulates on the outside of the retaining wall I and falls naturally along its arc-shaped outer surface, thus preventing the lubricating oil from splashing onto the vent valve.

[0019] In this technical solution, the lubricating oil is thrown to the outside of the retaining wall I and flows naturally between the retaining wall I and the gear, and continues to be stirred in the cavity of the gearbox housing.

[0020] Compared with the prior art, this utility model has the following advantages:

[0021] The newly added figure-eight-shaped oil baffle can effectively block lubricating oil regardless of whether the gear rotates clockwise or counterclockwise. This allows most of the lubricating oil to accumulate on the outside of the baffle and fall along the curved outer surface, preventing it from splashing onto the vent valve. At the same time, the vent valve can smoothly release internal air pressure through the misaligned gaps between the baffles, achieving the purpose of exhaust and pressure reduction. Attached Figure Description

[0022] Figure 1 This is one of the structural schematic diagrams of this utility model.

[0023] Figure 2This is the second structural schematic diagram of this utility model.

[0024] In the diagram: 1. Gearbox end cover; 2. Gearbox housing; 3. Oil baffle; 31. Vent valve; 32. Baffle I; 33. Baffle II. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] like Figure 1 and Figure 2 As shown, this embodiment provides a baffle structure to prevent oil spraying from the vent valve, including a vent valve 31. The vent valve 31 is installed on the side of the gearbox housing 2 corresponding to the protrusion of the gearbox end cover, and is arranged in the direction of the gear inside the gearbox housing 2. An oil baffle 3 with a figure-eight layout is provided on the inner wall of the gearbox housing 2. The oil baffle 3 includes baffle I 32 and baffle II 33, both of which are arc-shaped. The arc length of baffle I 32 is greater than that of baffle II 33.

[0028] like Figure 1 and Figure 2 As shown, this technical solution adds an oil baffle wall 3, which is changed to a V-shaped arrangement of baffle wall I 32 and baffle wall II 33. Whether the gear rotates clockwise or counterclockwise, it can be blocked by the arc-shaped baffle wall I 32, thus placing baffle wall II 33 within the protection range of baffle wall I 32. This ensures that most of the lubricating oil is blocked to the outer surface of baffle wall I 32, allowing the internal air pressure of the vent valve 31 to be released smoothly. This effectively prevents oil from splashing onto the vent valve 31, avoiding oil spraying from the vent valve 31, and also achieves the purpose of venting and pressure reduction. The oil baffle wall 3 is located between the vent valve 31 and the gear.

[0029] In addition, the baffle structure for preventing oil spraying from the vent valve proposed above according to this utility model may also have the following additional technical features:

[0030] According to one embodiment of the present invention, the oil baffle 3 and the gearbox housing 2 are integrally cast.

[0031] In this technical solution, the oil baffle 3 is cast together with the gearbox housing 2, which does not require machining and does not increase the machining difficulty.

[0032] According to one embodiment of this utility model, the oil baffle 3 is divided into two types according to the rotation direction of the gear assembly:

[0033] When the gear rotates clockwise, retaining wall I 32 is positioned above retaining wall II 33, forming a type A oil retaining wall structure;

[0034] When the gear rotates counterclockwise, retaining wall I 32 is located below retaining wall II 33, forming a type B oil retaining wall structure.

[0035] In this technical solution, the gear rotates and agitates the lubricating oil. As the gear rotates, the lubricating oil is thrown out along the tangent. The oil is blocked by the A-type or B-type oil baffle 3 structure, and the oil cannot enter the vent valve 31.

[0036] According to one embodiment of the present invention, a misalignment notch is provided between the retaining wall I 32 and the retaining wall II 33, and the vent valve 31 releases internal air pressure along the misalignment notch, preventing the oil from the gear from splashing onto the vent valve 31.

[0037] In this technical solution, the internal air pressure is the pressure generated in the cavity of the gearbox housing 2 as the gear speed increases. As the internal pressure increases, the excess pressure needs to be released through the vent valve 31 that connects to the cavity. Furthermore, the misalignment notch is protected by the retaining walls I 32 and II 33, preventing oil leakage from the vent valve 31 and thus eliminating oil leakage problems.

[0038] According to one embodiment of the present invention, the retaining wall II 33 is within the protection range of the retaining wall I 32.

[0039] In this technical solution, the arch formed by the curved bend of retaining wall I 32 completely covers the area where retaining wall II 33 is located, thus providing protection for retaining wall II 33 from both sides.

[0040] According to one embodiment of the present invention, the lubricating oil thrown out by the gear during operation accumulates on the outside of the retaining wall I 32 and falls naturally along its arc-shaped outer surface, preventing the lubricating oil from splashing onto the vent valve 31.

[0041] In this technical solution, the lubricating oil is thrown to the outside of the baffle wall I32 and flows naturally between the baffle wall I32 and the gear, and continues to be stirred in the cavity of the gearbox housing 2.

[0042] The usage process of the above embodiments is as follows:

[0043] like Figure 1As shown, when the gear rotates clockwise, the A-type oil baffle 3 structure is used, with baffle I 32 positioned above baffle II 33. As the gear rotates clockwise, the lubricating oil is thrown out tangentially by the gear. Because baffle I 32 is positioned above and has a longer arc length, it can better intercept the thrown-out lubricating oil. After the lubricating oil impacts baffle I 32, most of it falls along the arc-shaped outer surface of baffle I 32 and returns to the gearbox housing 2 cavity to continue participating in the lubrication cycle. Meanwhile, the vent valve 31 releases internal air pressure through the misaligned notch between baffle I 32 and baffle II 33. Under the double protection of baffle I 32 and baffle II 33, lubricating oil cannot enter the vent valve 31, preventing oil spraying from the vent valve 31.

[0044] like Figure 2 As shown, when the gear rotates counterclockwise, the B-type oil baffle 3 structure is used, with baffle I 32 located below baffle II 33. As the gear rotates counterclockwise, the lubricating oil is also thrown out tangentially, with baffle I 32 playing a major blocking role below. After being intercepted by baffle I 32, the lubricating oil falls along its arc-shaped outer surface. The vent valve 31 releases pressure through a misaligned notch. Due to the reasonable arrangement of baffle I 32 and baffle II 33, lubricating oil will not enter the vent valve 31, ensuring normal venting of the vent valve 31 and preventing oil spraying.

[0045] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, it is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. A baffle structure for preventing oil from being sprayed by a breather valve, characterized by comprising: It includes a vent valve (31), which is installed on the side of the gearbox housing (2) corresponding to the gearbox end cover protrusion and is oriented toward the gear inside the gearbox housing (2); an oil baffle (3) with a figure-eight layout is provided on the inner wall of the gearbox housing (2), which includes baffle I (32) and baffle II (33), both of which are arc-shaped, wherein the arc length of baffle I (32) is greater than that of baffle II (33).

2. The baffle structure for preventing oil from being ejected from a breather valve according to claim 1, wherein The oil baffle (3) and the gearbox housing (2) are integrally cast.

3. The baffle structure for preventing oil from being ejected from a breather valve according to claim 1 or 2, wherein The oil baffle (3) is divided into two types according to the rotation direction of the gear assembly: When the gear rotates clockwise, the retaining wall I (32) is located above the retaining wall II (33), forming a type A oil retaining wall structure; When the gear rotates counterclockwise, the retaining wall I (32) is located below the retaining wall II (33), forming a type B oil retaining wall structure.

4. The baffle structure for preventing oil from being ejected from a breather valve according to claim 1, wherein A misalignment gap is provided between the retaining wall I (32) and the retaining wall II (33). The vent valve (31) releases internal air pressure along the misalignment gap, preventing the oil from the gear from splashing onto the vent valve (31).

5. The oil projection preventing bulkhead structure of the vent valve according to claim 1 or 4, wherein The retaining wall II (33) is within the protection range of retaining wall I (32).

6. The baffle structure for preventing oil from being ejected from a breather valve according to claim 5, wherein The lubricating oil thrown out by the gear during operation accumulates on the outside of the retaining wall I (32) and falls naturally along its arc-shaped outer surface to prevent the lubricating oil from splashing onto the vent valve (31).

Images