Integrated ventilation flow guide oil leakage prevention structure and gearbox

Abstract

The utility model relates to the technical field of gearbox oil leakage prevention, and discloses an integrated ventilation flow guide oil leakage prevention structure and a gearbox. A flow guide plug is coaxially arranged at the bottom of a ventilation plug, a ventilation plug air channel is formed in the ventilation plug, and a ventilation plug air hole is formed in the top of the ventilation plug; a ventilation plug oil baffle plate is arranged at the position, close to the flow guide plug, in the ventilation plug air channel, a flow guide assembly and a flow guide plug air channel are arranged in the flow guide plug, the flow guide plug air channel is communicated with the ventilation plug air channel, air circulation of the ventilation plug is not affected, blocking is not prone to occurring, and the flow guide assembly is used for blocking lubricating oil entering the ventilation plug and can effectively block the risk that the lubricating oil splashes and leaks oil. And installation and maintenance are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of gearbox oil leakage prevention, in particular to an integrated ventilation and flow guidance oil leakage prevention structure and a gearbox. Background Art

[0002] With the application of new energy products such as integrated hybrid transmissions and electric axles, the power input of the whole vehicle has also changed from the traditional engine to the motor end. The motor output has the characteristics of low torque, high speed and high efficiency, so the matching new energy gearbox is required to have the advantages of large speed ratio, high speed and stable performance. The gears and bearings in the new energy box have a higher speed, which is bound to cause more obvious changes in temperature and pressure in the gearbox, so it is necessary to install a larger specification (aperture) breather plug in the gearbox. High-speed gears cause more intense oil stirring and splashing in the gearbox. The combination of these two factors will cause the breather plug of new energy products to leak more easily, and oil leakage in the box will cause extremely bad effects and need to be solved urgently.

[0003] More and more commercial vehicles are equipped with new energy products such as integrated hybrid transmissions and electric axles, and the power input of the vehicle has also changed from the engine to the motor. Compared with the engine, the motor input has advantages in power, economy, NVH, etc. The motor output speed is generally in the range of 6000rpm to 12000rpm. High speed input requires the new energy transmission to have a larger speed ratio, and the gears and bearings to have high-speed motion performance.

[0004] Compared with traditional gearboxes, the high speed operation of the components in the new energy gearbox will inevitably cause more obvious changes in temperature and pressure in the gearbox, so a larger diameter vent plug is needed to adjust the pressure in the box. The gear speed of the new energy gearbox is higher, which causes more intense splashing of lubricating oil. Due to the simple structure of the transmission vent plug, it is very easy to cause the lubricating oil to fly out, and the oil leakage failure of the box body increases.

[0005] Some patents at home and abroad have made changes to the traditional gearbox vent plug oil leakage, and their structures are mostly to add more complex airways, or add parts, reduce the diameter of the air holes, etc. These changes can reduce the amount of oil leakage, but at the same time, the small aperture is easy to cause the vent plug to be congested, the airway is not smooth, and it cannot achieve its function of stabilizing the pressure in the box. Utility Model Content

[0006] In order to overcome the defects of the above-mentioned prior art, the purpose of the utility model is to provide an integrated ventilation, diversion and oil leakage prevention structure and a gearbox to solve the technical problems of congestion of the traditional gearbox vent plug, obstructed airway and inability to achieve stable pressure inside the box.

[0007] The utility model is realized by the following technical solutions:

[0008] An integrated ventilation, diversion and oil leakage prevention structure comprises a vent plug and a diversion plug, wherein the diversion plug is coaxially arranged at the bottom of the vent plug, a vent plug airway is arranged inside the vent plug, a vent plug air hole is arranged on the top of the vent plug, a vent plug oil baffle is arranged at a position close to the diversion plug in the vent plug airway, a diversion assembly and a diversion plug airway are arranged in the diversion plug, the diversion plug airway is connected to the vent plug airway, and the diversion assembly is used to block the lubricating oil entering the vent plug.

[0009] Preferably, the vent plug air holes of the vent plug sequentially form an air intake path along the vent plug air channel to the guide plug air channel.

[0010] Preferably, the lubricating oil path from the guide assembly to the vent plug oil baffle plate from bottom to top is a lubricating oil path, and the vent plug oil baffle plate corresponds to the position of the guide plug airway, and is used for secondary blocking of the lubricating oil from entering the vent plug.

[0011] Preferably, the guide plug comprises a guide plug cylinder, which is arranged in the bottom end hole of the vent plug, the guide component is fixed in the guide plug cylinder, and the guide plug airway is the gap between the inner wall of the guide plug cylinder and the guide component.

[0012] Furthermore, the outer diameter of the guide plug cylinder corresponds to the inner diameter of the bottom end of the vent plug.

[0013] Furthermore, the guide assembly includes a guide plug oil baffle, which is located at the center of the guide plug cylinder, and the edge of the guide plug oil baffle is connected to the inner wall of the guide plug cylinder through a plurality of guide plug oil baffle support members.

[0014] Furthermore, there are gaps between a plurality of guide plug and oil baffle plate support members, wherein the gaps are guide plug air passages.

[0015] Furthermore, the structure of the guide plug oil baffle is a conical structure, and the conical tip is arranged close to the vent plug.

[0016] A gearbox includes a new energy gearbox body, on which the above-mentioned integrated ventilation, diversion and oil leakage prevention structure is arranged.

[0017] Preferably, an oil stirring gear is provided in the new energy gearbox body, the top of the new energy gearbox body is fixedly connected to the operating shell by fixing bolts, the operating shell is provided with a vent hole, and the integrated ventilation, diversion and oil leakage prevention structure is assembled in the vent hole.

[0018] Compared with the prior art, the utility model has the following beneficial technical effects:

[0019] The utility model provides an integrated ventilation and diversion anti-oil leakage structure, in which a diversion plug is coaxially arranged at the bottom of the vent plug, a vent plug airway is arranged inside the vent plug, a vent plug air hole is arranged on the top of the vent plug, a vent plug oil baffle is arranged at a position close to the diversion plug in the vent plug airway, a diversion assembly and a diversion plug airway are arranged in the diversion plug, the diversion plug airway is connected with the vent plug airway, which does not affect the gas circulation of the vent plug and is not easy to be blocked. The diversion assembly is used to block the lubricating oil entering the vent plug, which can effectively prevent the risk of splashing and leakage of the lubricating oil and is easy to install and maintain.

[0020] Furthermore, the vent plug air holes of the vent plug sequentially form an air intake path along the vent plug air channel to the guide plug air channel, thereby ensuring the gas circulation of the vent plug.

[0021] Furthermore, the lubricating oil path from the guide assembly to the vent plug oil baffle plate is from bottom to top, and the vent plug oil baffle plate corresponds to the position of the guide plug airway, which is used to perform secondary blocking of the lubricating oil entering the vent plug, and can effectively prevent the risk of lubricating oil splashing and leaking.

[0022] Furthermore, the guide plug includes a guide plug cylinder, which is arranged in the bottom end hole of the vent plug, the guide assembly is fixed in the guide plug cylinder, and the guide plug airway is the gap between the inner wall of the guide plug cylinder and the guide assembly. The lubricating oil is blocked by the guide assembly to prevent the lubricating oil from splashing out of the guide plug, and the central airway diameter should ensure the air in and out.

[0023] Furthermore, the guide assembly includes a guide plug oil baffle plate, which is located at the center of the guide plug cylinder and effectively blocks the lubricating oil. The edge of the guide plug oil baffle plate is connected to the inner wall of the guide plug cylinder through a plurality of guide plug oil baffle plate supports. There are gaps between the plurality of guide plug oil baffle plate supports, wherein the gaps are guide plug airways, which do not affect the gas circulation of the vent plug and are not easily clogged.

[0024] The utility model provides a gearbox, in which an integrated ventilation, diversion and oil leakage prevention structure is arranged in the ventilation hole of the operating shell in the gearbox, thereby ensuring the ventilation requirements of new energy products such as hybrid power gearboxes and electric axles, while avoiding the problem of splashing and leakage of lubricating oil, and avoiding blockage caused by too small an aperture, and the installation and maintenance are simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of an integrated ventilation, flow guidance and oil leakage prevention structure of a gearbox in the utility model;

[0026] Figure 2 for Figure 1 A magnified schematic diagram of the integrated ventilation, diversion and oil leakage prevention structure;

[0027] Figure 3 This is a schematic diagram of the structure of the guide plug in the utility model;

[0028] Figure 4 This is a cross-sectional view of the guide plug in the utility model;

[0029] Figure 5 This is a schematic diagram of the interior of the vent plug in the utility model;

[0030] Figure 6 This is a rendering of the airway inside the vent plug in the utility model;

[0031] Figure 7 This is a diagram showing the oil blocking effect of the vent plug in the utility model.

[0032] In the figure: 1-vent plug; 2-guide plug; 3-operating housing; 4-fixing bolt; 5-new energy gearbox; 6-oil stirring gear; 11-vent plug air hole; 12-vent plug air duct; 13-vent plug oil baffle plate; 14-lubricating oil path; 15-intake path; 21-guide plug cylinder; 22-guide plug oil baffle plate support; 23-guide plug oil baffle plate; 24-guide plug air duct. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, products or devices.

[0035] The utility model is further described in detail below with reference to the accompanying drawings:

[0036] The utility model aims to provide an integrated ventilation, flow-guiding and oil-leakage-proof structure and a gearbox, so as to solve the technical problem that the ventilation plug of the traditional gearbox is blocked, the airway is not smooth, and the stable pressure inside the box cannot be achieved.

[0037] See also Figure 2 In one embodiment of the utility model, an integrated ventilation and diversion anti-leakage oil structure is provided, including a vent plug 1 and a diversion plug 2, wherein the diversion plug 2 is coaxially arranged at the bottom of the vent plug 1, a vent plug airway 12 is arranged inside the vent plug 1, a vent plug air hole 11 is arranged on the top of the vent plug 1, and a vent plug oil baffle 13 is arranged at a position near the diversion plug 2 in the vent plug airway 12, such as Figure 5 As shown, a guide assembly and a guide plug air passage 24 are provided in the guide plug 2 . The guide plug air passage 24 is communicated with the vent plug air passage 12 . The guide assembly is used to block the lubricating oil from entering the vent plug 2 .

[0038] Specifically, the vent plug air hole 11 of the vent plug 1 sequentially forms an air intake path 15 along the vent plug air passage 12 to the guide plug air passage 24, such as Figure 6 shown.

[0039] Specifically, the lubricating oil path 14 is formed from the guide assembly to the vent plug oil baffle plate 13 from bottom to top. Figure 7 As shown, the vent plug oil baffle 13 corresponds to the position of the guide plug airway 24 and is used to perform secondary blocking of the lubricating oil from entering the vent plug 2 .

[0040] Specifically, according to Figure 3 and Figure 4 As shown, the guide plug 2 includes a guide plug cylinder 21, which is arranged at the bottom end hole of the vent plug 1, the guide component is fixed in the guide plug cylinder 21, and the guide plug airway 24 is the gap between the inner wall of the guide plug cylinder 21 and the guide component.

[0041] The outer diameter of the guide plug cylinder 21 corresponds to the inner diameter of the bottom end of the vent plug 1 .

[0042] The guide assembly includes a guide plug oil baffle plate 23 , which is located at the center of the guide plug cylinder 21 , and the edge of the guide plug oil baffle plate 23 is connected to the inner wall of the guide plug cylinder 21 through a plurality of guide plug oil baffle plate supports 22 .

[0043] There are gaps between the guide plug oil baffle plate support members 22 , wherein the gaps are guide plug air passages 24 .

[0044] The structure of the guide plug oil baffle 23 is a conical structure, and the conical tip is arranged close to the vent plug 1 .

[0045] The conical oil baffle in the utility model conforms to the design principle of fluid mechanics and can effectively block the lubricating oil splashing upward. At the same time, the large-sized air passage of the guide plug cylinder 21 can ensure the air inlet and outlet, meeting the large ventilation volume requirements of the new energy gearbox.

[0046] The ventilation plug oil baffle plate 13 of the utility model cooperates with the guide plug 2 to more fully prevent the splashing of lubricating oil, thereby meeting the ventilation and oil leakage prevention requirements of new energy products.

[0047] In the utility model, the splashed lubricating oil is blocked by the guide plug oil baffle plate 23 of the guide plug 2 and the vent plug oil baffle plate 13, and the air can enter the vent plug 1 from the vent plug air hole 11 and freely enter and exit the vent plug air channel 12 and the guide plug air channel 24. The fluid flow channel design conforms to the principle of fluid mechanics, effectively blocks oil and is not easy to be blocked. Figure 6 and Figure 7 shown.

[0048] according to Figure 1 As shown, the utility model further provides a gearbox, including a new energy gearbox body 5, on which the above-mentioned integrated ventilation, flow guidance and oil leakage prevention structure is arranged.

[0049] Specifically, an oil stirring gear 6 is provided in the new energy gearbox body 5, and the top of the new energy gearbox body 5 is fixedly connected to the operating shell 3 by a fixing bolt 4. The operating shell 3 is provided with a vent hole, and the integrated ventilation, diversion and oil leakage prevention structure is assembled in the vent hole.

[0050] To sum up, the purpose of the utility model is to provide an integrated ventilation, diversion and oil leakage prevention structure and gearbox, which can avoid the problems of lubricating oil splashing, leakage and escape while effectively ensuring the ventilation requirements of new energy products such as hybrid gearboxes and electric axles, and at the same time avoid blockage caused by too small aperture, and is simple to install and maintain.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. An integrated ventilation, flow guidance and oil leakage prevention structure, characterized in that: The invention comprises a vent plug (1) and a guide plug (2), wherein the guide plug (2) is coaxially arranged at the bottom of the vent plug (1), a vent plug air passage (12) is arranged inside the vent plug (1), a vent plug air hole (11) is arranged at the top of the vent plug (1), a vent plug oil baffle (13) is arranged at a position close to the guide plug (2) in the vent plug air passage (12), a guide assembly and a guide plug air passage (24) are arranged in the guide plug (2), the guide plug air passage (24) is communicated with the vent plug air passage (12), and the guide assembly is used to block lubricating oil from entering the vent plug (1).

2. The integrated ventilation, flow guidance and oil leakage prevention structure according to claim 1, characterized in that: The vent plug air holes (11) of the vent plug (1) sequentially form an air intake path along the vent plug air channel (12) to the guide plug air channel (24).

3. The integrated ventilation, flow guidance and oil leakage prevention structure according to claim 1, characterized in that: The lubricating oil path (15) is formed from the guide assembly to the vent plug oil baffle (13) from bottom to top. The vent plug oil baffle (13) corresponds to the position of the guide plug airway (24) and is used to perform secondary blocking of the lubricating oil from entering the vent plug (1).

4. The integrated ventilation, flow guidance and oil leakage prevention structure according to claim 1, characterized in that: The flow guide plug (2) comprises a flow guide plug cylinder (21), the flow guide plug cylinder (21) is arranged at the bottom end hole of the vent plug (1), the flow guide component is fixed in the flow guide plug cylinder (21), and the flow guide plug airway (24) is the gap between the inner wall of the flow guide plug cylinder (21) and the flow guide component.

5. The integrated ventilation, flow guidance and oil leakage prevention structure according to claim 4, characterized in that: The outer diameter of the guide plug cylinder (21) corresponds to the inner diameter of the bottom end of the vent plug (1).

6. The integrated ventilation, flow guidance and oil leakage prevention structure according to claim 4, characterized in that: The flow guide assembly comprises a flow guide plug oil baffle plate (23), the flow guide plug oil baffle plate (23) is located at the center of the flow guide plug cylinder (21), and the edge of the flow guide plug oil baffle plate (23) is connected to the inner wall of the flow guide plug cylinder (21) through a plurality of flow guide plug oil baffle plate support members (22).

7. The integrated ventilation, flow guidance and oil leakage prevention structure according to claim 6, characterized in that: There are gaps between a plurality of guide plug oil baffle plate support members (22), wherein the gaps are guide plug air passages (24).

8. The integrated ventilation, flow guidance and oil leakage prevention structure according to claim 6, characterized in that: The structure of the guide plug oil baffle (23) is a conical structure, and the conical tip is arranged close to the vent plug (1).

9. A gearbox, characterized in that: It comprises a new energy gearbox body (5), on which an integrated ventilation, flow guidance and oil leakage prevention structure according to any one of claims 1 to 8 is arranged.

10. A gearbox according to claim 9, characterized in that: An oil stirring gear (6) is provided in the new energy transmission case (5); the top of the new energy transmission case (5) is fixedly connected to the operating case (3) via a fixing bolt (4); a vent hole is provided on the operating case (3); and the integrated ventilation, flow-guiding and oil leakage-proof structure is assembled in the vent hole.

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