Exhaust device of gearbox

Abstract

The utility model discloses an exhaust device of a gearbox, which belongs to the technical field of gearboxes and comprises an exhaust pipe, a support ring is arranged on the inner wall of the exhaust pipe, a plurality of arc-shaped inclined holes are arranged on the side surface of the exhaust pipe and above the support ring, an inner threaded hole is arranged at the top of an inner cavity of the exhaust pipe, and the inner threaded hole is communicated with the support ring. The inner side of the inner threaded hole is in threaded connection with an outer threaded pipe in a sleeved mode. According to the gearbox, when the air pressure in the gearbox is kept at normal pressure, the elastic force of the spring is utilized to drive the piston plate to block the inner side of the arc-shaped inclined hole, meanwhile, the outer side of the arc-shaped inclined hole is protected through the filter screen ring, water vapor and dust in the outside air are prevented from entering the gearbox, and when the temperature in the gearbox rises and the pressure is increased, the piston plate is driven to block the inner side of the arc-shaped inclined hole. And the air pressure overcomes the elastic force of the spring to push the piston plate to move upwards, so that the air in the exhaust pipe is exhausted from the arc-shaped inclined hole, the function of exhausting the air in the gearbox is realized, and the practicability of the gearbox exhaust device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, and more particularly to an exhaust device for a gearbox. Background Art

[0002] A transmission is a mechanism used to change the speed and torque of the engine. It can change the transmission ratio between the output and input shafts in a fixed or step-by-step manner. A transmission consists of a speed change mechanism and a steering mechanism. Some vehicles also have a power take-off mechanism. To prevent excessive pressure caused by temperature rise in the transmission, an exhaust device is required.

[0003] After searching, the utility model patent with publication number CN220748991U discloses an exhaust device of a gearbox, including a threaded connection nozzle of an exhaust hole, the end of the threaded connection nozzle of the exhaust hole is connected and fixedly installed with a lap ring seat, and the end face of the lap ring seat close to the threaded connection nozzle of the exhaust hole is bonded with a sealing gasket body; the device provides support for the steering support shaft by setting a bracket mechanism, and then supports and connects the anti-blocking and dirt-blocking sleeve for steering through the bearing, so that the entire exhaust channel can flow from the circular through-hole channel between the anti-blocking and dirt-blocking sleeve and the dirt-blocking lining, and rapid exhaust and pressure relief can be achieved through the exhaust through-holes at the end of the exhaust end pipe and the pipe wall, and the external anti-blocking and dirt-blocking sleeve provides anti-fouling isolation without blocking the gas channel, thereby achieving the effect of facilitating the provision of dirt isolation protection to the outside of the exhaust hole structure, achieving the effect of ensuring exhaust and pressure relief, and thus helping to ensure the service life of parts in the gearbox.

[0004] However, the above patent still has the following shortcomings: although it can effectively prevent external pollution from entering the gearbox, the interior of the gearbox is still connected to the outside, and moisture and dust in the external air can still easily enter the gearbox, which is not practical. To this end, we propose an exhaust device for a gearbox. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide an exhaust device for a gearbox.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions:

[0007] A gearbox exhaust device comprises an exhaust pipe, wherein the inner wall of the exhaust pipe is provided with a support ring, a plurality of arc-shaped inclined holes are opened on the side of the exhaust pipe and above the support ring, an internal threaded hole is provided on the top of the inner cavity of the exhaust pipe, an external threaded pipe is sleeved on the inner thread of the internal threaded hole, the top end of the external threaded pipe extends to the top of the exhaust pipe and is fixedly connected to a top cover, the bottom surface of the top cover is fixedly connected to a spring, the bottom end of the spring extends to the inner cavity of the exhaust pipe and is fixedly connected to a piston plate, the bottom surface of the piston plate and the top surface of the support ring are in contact with each other, the side surface of the piston plate and the inner wall of the exhaust pipe are in contact with each other, a filter ring is fixedly sleeved on the outside of the exhaust pipe and located outside the arc-shaped inclined hole, and a protective mechanism is provided on the top of the top cover.

[0008] As a preferred solution of the present utility model, the protective mechanism includes a rotating base column fixedly connected to the top surface of the top cover, a rotating sleeve is rotatably connected to the rotating base column, a plurality of blowing plates are provided at the bottom of the inner cavity of the rotating sleeve, and a plurality of brushes are provided at the bottom of the inner cavity of the rotating sleeve, and the ends of the brushes are in contact with the outer side of the filter ring.

[0009] As a preferred solution of the present invention, the bottom surface of the top cover is fixedly connected to a telescopic square tube, the inner cavity of the telescopic square tube is movably sleeved with a telescopic square column, and the bottom end of the telescopic square column is connected to the top surface of the piston plate.

[0010] As a preferred solution of the present invention, an external thread groove is provided on the outer side of the bottom end of the exhaust pipe, and a hexagonal column is fixedly sleeved on the outer side of the exhaust pipe.

[0011] As a preferred solution of the present invention, a pull block is fixedly connected to the top surface of the rotating base column.

[0012] As a preferred solution of the present invention, an air guide slope is provided at the bottom of the support ring.

[0013] As a preferred solution of the present invention, the inner wall of the telescopic square tube and the side surface of the telescopic square column are in contact with each other.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) In the present invention, when the air pressure in the gearbox is kept at normal pressure, the elastic force of the spring is used to drive the piston plate to block the inner side of the arc-shaped inclined hole, and at the same time, the outer side of the arc-shaped inclined hole is protected by the filter ring to prevent water vapor and dust in the external air from entering the gearbox. When the temperature inside the gearbox rises and the pressure increases, the air pressure overcomes the elastic force of the spring and pushes the piston plate upward, so that the gas in the exhaust pipe is discharged from the arc-shaped inclined hole, thereby realizing the function of discharging the gas in the gearbox.

[0016] (2) In the present invention, when the gas is discharged from the arc-shaped inclined hole, the air flow is used to blow the blowing plate on the inner side of the rotating sleeve, and the blowing plate is used to drive the rotating sleeve to rotate, and the outer side of the filter ring is cleaned by the brush on the inner side of the rotating sleeve, thereby cleaning the dust on the outer side of the filter ring, ensuring the filtering protection effect of the filter ring, and having good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is an exploded view of the overall structure of the utility model;

[0019] Figure 3 It is a cross-sectional schematic diagram of the utility model;

[0020] Figure 4 This is a structural diagram of the arc-shaped inclined hole of the utility model;

[0021] Figure 5 It is a cross-sectional schematic diagram of the exhaust pipe of the present invention.

[0022] Description of the numbers in the figure:

[0023] 1. Exhaust pipe; 2. Support ring; 3. Arc-shaped inclined hole; 4. Filter ring; 5. Internal thread hole; 6. External thread pipe; 7. Top cover; 8. Spring; 9. Piston plate; 10. Protective mechanism; 11. External thread groove; 12. Air guide slope; 13. Rotating base column; 14. Rotating sleeve; 15. Blowing plate; 16. Brush; 17. Hexagonal column; 18. Pull block; 19. Telescopic square tube; 20. Telescopic square column. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0027] Example:

[0028] See also Figure 1-5 , an exhaust device of a gearbox comprises an exhaust pipe 1, the inner wall of the exhaust pipe 1 is provided with a support ring 2, a plurality of arc-shaped oblique holes 3 are opened on the side of the exhaust pipe 1 and above the support ring 2, an internal threaded hole 5 is provided on the top of the inner cavity of the exhaust pipe 1, an external threaded tube 6 is threadedly sleeved on the inner side of the internal threaded hole 5, the top of the external threaded tube 6 extends to the top of the exhaust pipe 1 and is fixedly connected to a top cover 7, the bottom surface of the top cover 7 is fixedly connected to a spring 8, the bottom end of the spring 8 extends to the inner cavity of the exhaust pipe 1 and is fixedly connected to a piston plate 9, the bottom surface of the piston plate 9 is in contact with the top surface of the support ring 2, the side surface of the piston plate 9 is in contact with the inner wall of the exhaust pipe 1, the outside of the exhaust pipe 1 and located outside the arc-shaped oblique hole 3 is fixedly sleeved with a filter ring 4, and the top of the top cover 7 is provided with a protective mechanism 10.

[0029] For details, please refer to Figures 1 to 4 The protective mechanism 10 includes a rotating base column 13 fixedly connected to the top surface of the top cover 7, a rotating sleeve 14 is rotatably connected to the rotating base column 13, a plurality of blowing plates 15 are provided at the bottom of the inner cavity of the rotating sleeve 14, and a plurality of brushes 16 are provided at the bottom of the inner cavity of the rotating sleeve 14, and the end of the brush 16 is in contact with the outer side of the filter ring 4.

[0030] In this embodiment, the gas discharged from the arc-shaped inclined hole 3 is used to blow the blowing plate 15, and the blowing plate 15 drives the rotating sleeve 14 to rotate, so that the rotating sleeve 14 drives the brush 16 to rotate, and the brush 16 is used to clean the dust on the side of the filter ring 4.

[0031] For details, please refer to Figure 3 The bottom surface of the top cover 7 is fixedly connected with a telescopic square tube 19, and the inner cavity of the telescopic square tube 19 is movably sleeved with a telescopic square column 20, and the bottom end of the telescopic square column 20 is connected to the top surface of the piston plate 9.

[0032] In this embodiment, the piston plate 9 is limited by the cooperation of the telescopic square tube 19 and the telescopic square column 20 , so that the piston plate 9 can only move up and down in the inner cavity of the exhaust pipe 1 .

[0033] For details, please refer to Figure 3 An external thread groove 11 is provided on the outer side of the bottom end of the exhaust pipe 1, and a hexagonal column 17 is fixedly sleeved on the outer side of the exhaust pipe 1.

[0034] In this embodiment, the external thread groove 11 is connected to the threaded exhaust hole on the gearbox, and the depth of the bottom end of the exhaust pipe 1 inserted into the gearbox is limited by the hexagonal column 17. At the same time, the hexagonal column 17 is used to facilitate the rotation of the exhaust pipe 1.

[0035] For details, please refer to Figure 3 The top surface of the rotating base column 13 is fixedly connected with a pull block 18.

[0036] In this embodiment, the top cover 7 and the external threaded tube 6 are rotated by the lever block 18 to ensure that the external threaded tube 6 can be removed from the internal threaded hole 5 at the top of the exhaust pipe 1, and at the same time, the external threaded tube 6 can be screwed into the internal threaded hole 5.

[0037] For details, please refer to Figure 5 An air guide slope 12 is provided at the bottom of the support ring 2.

[0038] In this embodiment, the gas guiding slope 12 is used to guide the gas.

[0039] For details, please refer to Figure 3 The inner wall of the telescopic square tube 19 and the side surface of the telescopic square column 20 are in contact with each other.

[0040] In this embodiment, the stability of the telescopic square column 20 in the telescopic square tube 19 is ensured.

[0041] Working principle: When in use, the exhaust pipe 1 is installed on the gearbox through the external thread groove 11 and the threaded exhaust hole on the gearbox. At the same time, the filter ring 4 is used to prevent external dust from entering the arc-shaped inclined hole 3. At the same time, the elastic force of the spring 8 is used to drive the piston plate 9 to block the inner side of the arc-shaped inclined hole 3. When the temperature inside the gearbox rises and the pressure becomes higher, the air pressure overcomes the elastic force of the spring 8 to push the piston plate 9 upward, so that the piston plate 9 no longer blocks the arc-shaped inclined hole 3 on the side of the exhaust pipe 1, so that the gas in the exhaust pipe 1 is discharged from the arc-shaped inclined hole 3. At the same time, the gas discharged from the arc-shaped inclined hole 3 is blown to the blowing plate 15 on the inside of the rotating sleeve 14, thereby driving the rotating sleeve 14 to rotate. The rotation of the rotating sleeve 14 drives the brush 16 to rotate synchronously, and the brush 16 is used to clean the dust on the outside of the filter ring 4.

[0042] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and improved ideas of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An exhaust device for a gearbox, comprising an exhaust pipe (1), characterized in that: The inner wall of the exhaust pipe (1) is provided with a support ring (2), and a plurality of arc-shaped oblique holes (3) are provided on the side of the exhaust pipe (1) and above the support ring (2). The top of the inner cavity of the exhaust pipe (1) is provided with an internal threaded hole (5), and the inner side thread of the internal threaded hole (5) is connected with an external threaded pipe (6). The top end of the external threaded pipe (6) extends to the top of the exhaust pipe (1) and is fixedly connected with a top cover (7). The bottom surface of the top cover (7) is fixed. A spring (8) is fixedly connected, the bottom end of the spring (8) extends to the inner cavity of the exhaust pipe (1) and is fixedly connected to a piston plate (9), the bottom surface of the piston plate (9) is in contact with the top surface of the support ring (2), the side surface of the piston plate (9) is in contact with the inner wall of the exhaust pipe (1), the outside of the exhaust pipe (1) and located outside the arc-shaped inclined hole (3) is fixedly sleeved with a filter ring (4), and a protective mechanism (10) is provided on the top of the top cover (7).

2. The exhaust device of a gearbox according to claim 1, characterized in that: The protective mechanism (10) comprises a rotating base column (13) fixedly connected to the top surface of the top cover (7); a rotating sleeve (14) is rotatably connected to the rotating base column (13); a plurality of blowing plates (15) are provided at the bottom of the inner cavity of the rotating sleeve (14); a plurality of brushes (16) are provided at the bottom of the inner cavity of the rotating sleeve (14); and the ends of the brushes (16) are in contact with the outer side of the filter mesh ring (4).

3. The exhaust device of a gearbox according to claim 1, characterized in that: The bottom surface of the top cover (7) is fixedly connected to a telescopic square tube (19), the inner cavity of the telescopic square tube (19) is movably sleeved with a telescopic square column (20), and the bottom end of the telescopic square column (20) is connected to the top surface of the piston plate (9).

4. The exhaust device of a gearbox according to claim 1, characterized in that: An external thread groove (11) is provided on the outer side of the bottom end of the exhaust pipe (1), and a hexagonal column (17) is fixedly sleeved on the outer side of the exhaust pipe (1).

5. The exhaust device of a gearbox according to claim 2, characterized in that: The top surface of the rotating base column (13) is fixedly connected with a pull block (18).

6. The exhaust device of a gearbox according to claim 1, characterized in that: An air guide slope (12) is provided at the bottom of the support ring (2).

7. The exhaust device of a gearbox according to claim 3, characterized in that: The inner wall of the telescopic square tube (19) and the side surface of the telescopic square column (20) are in contact with each other.

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