A lightweight transmission

Abstract

This utility model belongs to the field of gearbox technology and discloses a lightweight gearbox, including a gearbox housing. An exhaust pipe is fixedly installed at the top of the gearbox housing. A return spring is fixedly connected to the upper inner wall of the exhaust pipe. A sealing plate is fixedly connected to the bottom end of the return spring. The outer surface of the sealing plate is slidably sleeved with the inner surface of the exhaust pipe. A groove is formed at the bottom end of the sealing plate. The groove is cylindrical. A guide plug is fixedly connected to the lower inner wall of the groove. A plurality of exhaust holes are formed on the outer surface of the exhaust pipe. Sealing rings are embedded in the outer surfaces of the sealing plate corresponding to the plurality of exhaust holes. By setting an exhaust pipe, when the internal pressure of the gearbox increases, the sealing plate overcomes the spring force and moves upward to open the exhaust holes, realizing rapid pressure relief. When the pressure decreases, the spring pushes the sealing plate to return to the original position and close the exhaust holes, preventing contaminants from entering and effectively ensuring the stable operation of the gearbox.

Description

Technical Field

[0001] This utility model belongs to the field of gearbox technology, specifically a lightweight gearbox. Background Technology

[0002] The gearbox bracket is an important component in the car chassis. It is generally used to connect and fix the gearbox assembly and the suspension rubber support, absorb the energy of vibration transmitted by the whole vehicle, and prevent the vibration of the whole vehicle from being transmitted to the powertrain. At the same time, it can also prevent the vibration of the powertrain from being transmitted to the whole vehicle, which can lead to problems such as excessive vehicle shaking.

[0003] Meanwhile, the patent specification with application number CN211398496U discloses a lightweight gearbox housing, "including several weight-reducing grooves cast on the non-load-bearing surface of the housing, wherein the cross-section of the weight-reducing grooves is set as a regular hexagon. This utility model, by casting multiple weight-reducing grooves on the non-load-bearing surface of the housing and setting the cross-section of the weight-reducing grooves as a regular hexagon, because the regular hexagonal structure has a stronger load-bearing capacity under the same stress conditions, better fatigue resistance, is not easy to deform and is not easy to break, so this regular hexagonal structure of weight-reducing grooves can not only increase the surface area of ​​the housing and increase the heat dissipation performance, but also achieve the purpose of reducing the weight of the housing";

[0004] In the current use of transmissions, most of the exhaust functions are not perfect and cannot automatically adjust the opening and closing according to the internal pressure. This can easily lead to untimely exhaust under high temperature and high pressure, or backflow of external pollutants when stationary. Secondly, most do not integrate oil-gas separation function, and the oil-gas mixture is discharged directly, which not only wastes oil, but also pollutes the environment.

[0005] Therefore, a lightweight transmission is proposed to address the above problems. Utility Model Content

[0006] To address the problems mentioned in the background section, this invention provides a lightweight transmission that effectively ensures stable operation of the transmission and achieves efficient oil-gas separation, avoiding oil waste and environmental pollution, and overcoming the shortcomings of existing technologies that lack separation functionality.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a lightweight gearbox, including a gearbox housing, an exhaust pipe fixedly installed at the top of the gearbox housing, a return spring fixedly connected to the upper inner wall of the exhaust pipe, a sealing plate fixedly connected to the bottom end of the return spring, the outer surface of the sealing plate slidingly sleeved with the inner surface of the exhaust pipe, a groove formed at the bottom end of the sealing plate, the groove being cylindrical, a guide plug fixedly connected to the lower inner wall of the groove, a plurality of exhaust holes formed on the outer surface of the exhaust pipe, and sealing rings embedded in the outer surfaces of the sealing plate corresponding to the plurality of exhaust holes.

[0008] Preferably, the flow guide plug is frustum-shaped, and the outer surface of the flow guide plug is coated with a lubricating layer.

[0009] Preferably, the lower inner wall edge of the groove is arc-shaped, and the inner diameter of the groove is larger than the maximum outer diameter of the guide plug.

[0010] Preferably, a plurality of sliders are fixedly connected to the outer surface of the sealing plate, and the inner surface of the exhaust pipe is fitted with a groove for use by the plurality of sliders.

[0011] Preferably, the gearbox housing is made of aluminum alloy, the exhaust pipe is made of carbon fiber composite material, and the return spring is made of beryllium bronze.

[0012] Preferably, a filter frame is movably fitted onto the outer surface of the exhaust pipe, and a filter screen is provided on the inner surface of the filter frame.

[0013] Preferably, the bottom end of the filter frame is provided with a fixing ring, the inner surface of the fixing ring is fixedly connected to the outer surface of the exhaust pipe, and the top end of the fixing ring is coated with magnetic coating. The filter frame is made of iron.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. By setting up an exhaust pipe, under the elastic reset action of the reset spring, when the internal pressure of the gearbox increases, the sealing plate overcomes the spring force and moves upward to open the exhaust port, achieving rapid pressure relief. When the pressure decreases, the spring pushes the sealing plate to reset and close the exhaust port, preventing contaminants from entering and effectively ensuring the stable operation of the gearbox.

[0016] 2. By setting a groove and a guide plug, when the oil-gas mixture enters the groove, the oil flows back quickly into the gearbox housing along the annular gap and the conical surface of the guide plug under the guidance of gravity, the arc-shaped wall, and the guide plug, while the gas is discharged through the exhaust hole, thus achieving efficient oil-gas separation, avoiding oil waste and environmental pollution, and making up for the lack of separation function in the prior art. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the exhaust pipe of this utility model;

[0020] Figure 4 This is a schematic diagram of the sealing plate and flow guide plug structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the filter frame and fixing ring structure of this utility model.

[0022] In the diagram: 1. Gearbox housing;

[0023] 2. Exhaust pipe; 21. Return spring;

[0024] 22. Slide rail; 221. Slider;

[0025] 23. Sealing plate; 231. Groove; 232. Flow guide plug;

[0026] 24. Sealing ring; 25. Vent hole;

[0027] 3. Filter frame; 4. Filter screen; 5. Fixing ring. Detailed Implementation

[0028] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 1 to 5 As shown, this utility model provides a lightweight gearbox, including a gearbox housing 1. An exhaust pipe 2 is fixedly installed at the top of the gearbox housing 1. A return spring 21 is fixedly connected to the upper inner wall of the exhaust pipe 2. A sealing plate 23 is fixedly connected to the bottom end of the return spring 21. The outer surface of the sealing plate 23 is slidably sleeved with the inner surface of the exhaust pipe 2. A groove 231 is formed at the bottom end of the sealing plate 23. The groove 231 is cylindrical. A guide plug 232 is fixedly connected to the lower inner wall of the groove 231. A plurality of exhaust holes 25 are formed on the outer surface of the exhaust pipe 2. Sealing rings 24 are embedded in the outer surfaces of the sealing plate 23 corresponding to the plurality of exhaust holes 25. Through the automatic opening and closing structure of the return spring 21 and the sealing plate 23, the opening and closing of the exhaust holes 25 can be automatically adjusted according to the internal pressure change of the gearbox. This can not only exhaust in time under high temperature and high pressure, but also prevent external pollutants from flowing back in when stationary, thereby improving sealing performance and reliability.

[0030] Specifically, the guide plug 232 is frustum-shaped, and the outer surface of the guide plug 232 is coated with a lubricating layer. The frustum-shaped guide plug 232, together with the lubricating layer, can reduce the oil flow resistance, allowing the oil in the oil-gas mixture to flow back to the gearbox housing 1 more smoothly along the surface of the guide plug 232, thereby improving the oil-gas separation efficiency.

[0031] like Figures 1 to 5As shown, the lower inner wall edge of the groove 231 is arc-shaped, and the inner diameter of the groove 231 is larger than the maximum outer diameter of the guide plug 232. The arc-shaped edge and the annular gap design can utilize gravity and curved surface guidance to assist the oil in flowing back along the inner wall of the groove 231, further enhancing the oil-gas separation effect and reducing oil waste and environmental pollution.

[0032] Furthermore, a number of sliders 221 are fixedly connected to the outer surface of the sealing plate 23, and the inner surface of the exhaust pipe 2 is fitted with a groove 22 for the sliders 221. The cooperation between the sliders 221 and the groove 22 can limit the movement trajectory of the sealing plate 23, prevent it from deviating or getting stuck during sliding, and ensure that the opening and closing action of the exhaust port 25 is stable and reliable.

[0033] like Figures 1 to 5 As shown, the gearbox housing 1 is made of aluminum alloy, the exhaust pipe 2 is made of carbon fiber composite material, and the return spring 21 is made of beryllium bronze. By selecting lightweight materials, the overall weight of the gearbox is effectively reduced while ensuring structural strength, which meets the lightweight design requirements of modern vehicles and improves fuel economy and power performance.

[0034] It is worth noting that a filter frame 3 is movably sleeved on the outer surface of the exhaust pipe 2, and a filter screen 4 is provided on the inner surface of the filter frame 3. The filter screen 4 can intercept impurity particles in the exhaust gas, prevent them from entering the atmosphere, further reduce environmental pollution, and at the same time prevent foreign objects from entering the exhaust port 25 and sliding into the gearbox housing 1.

[0035] like Figures 1 to 5 As shown, the bottom of the filter frame 3 is provided with a fixing ring 5. The inner surface of the fixing ring 5 is fixedly connected to the outer surface of the exhaust pipe 2, and the top of the fixing ring 5 is coated with magnetic coating. The filter frame 3 is made of iron. The cooperation between the magnetic fixing ring 5 and the iron filter frame 3 makes it easy to quickly disassemble and install the filter frame 3, and facilitates the cleaning or replacement of the filter screen 4 in the later stage, thus improving the convenience of maintenance.

[0036] Working principle and process: When the gearbox operates and generates high temperature and pressure, the internal gas pressure pushes the sealing plate 23 upward against the elastic force of the return spring 21, opening the exhaust port 25 and releasing the gas. At the same time, the oil-gas mixture enters the groove 231. Under the guidance of the guide plug 232 and the arc-shaped inner wall of the groove 231, the oil flows back into the gearbox housing 1 along the annular gap and the surface of the guide plug 232, achieving oil-gas separation. When the internal pressure decreases, the return spring 21 pushes the sealing plate 23 to reset, and the sealing ring 24 tightly engages with the exhaust port 25 to prevent external contaminants from entering.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lightweight transmission, comprising a transmission housing (1), characterized in that: An exhaust pipe (2) is fixedly installed at the top of the gearbox housing (1). A return spring (21) is fixedly connected to the upper inner wall of the exhaust pipe (2). A sealing plate (23) is fixedly connected to the bottom end of the return spring (21). The outer surface of the sealing plate (23) is slidably sleeved with the inner surface of the exhaust pipe (2). A groove (231) is opened at the bottom end of the sealing plate (23). The groove (231) is cylindrical. A guide plug (232) is fixedly connected to the lower inner wall of the groove (231). A plurality of exhaust holes (25) are opened on the outer surface of the exhaust pipe (2). A sealing ring (24) is embedded in the outer surface of the sealing plate (23) corresponding to the plurality of exhaust holes (25).

2. The lightweight transmission according to claim 1, characterized in that: The flow guide plug (232) is frustum-shaped, and the outer surface of the flow guide plug (232) is coated with a lubricating layer.

3. A lightweight transmission according to claim 1, characterized in that: The lower inner wall edge of the groove (231) is arc-shaped, and the inner diameter of the groove (231) is larger than the maximum outer diameter of the guide plug (232).

4. A lightweight transmission according to claim 1, characterized in that: The outer surface of the sealing plate (23) is fixedly connected with several sliders (221), and the inner surface of the exhaust pipe (2) is fitted with a groove (22) for the several sliders (221).

5. A lightweight transmission according to claim 1, characterized in that: The gearbox housing (1) is made of aluminum alloy, the exhaust pipe (2) is made of carbon fiber composite material, and the return spring (21) is made of beryllium bronze.

6. A lightweight transmission according to claim 1, characterized in that: The outer surface of the exhaust pipe (2) is movably fitted with a filter frame (3), and the inner surface of the filter frame (3) is provided with a filter screen (4).

7. A lightweight transmission according to claim 6, characterized in that: The bottom end of the filter frame (3) is provided with a fixing ring (5), the inner surface of the fixing ring (5) is fixedly connected to the outer surface of the exhaust pipe (2), and the top end of the fixing ring (5) is coated with magnetic coating. The filter frame (3) is made of iron.

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