Protection device for vent plug of drive axle

Abstract

The utility model provides a protective device for a vent plug of a drive axle. The protective device comprises a first protective shell and a second protective shell fixedly connected with the first protective shell. Wherein one end of the first protective shell is provided with a base, and the base is provided with a first buckle type connector communicated with the interior of the first protective shell. The second protective shell is sleeved outside the first protective shell from the other end of the first protective shell, and a second buckle type connector communicated with the inside of the second protective shell is arranged on the side wall of the second protective shell. The vent plug is arranged in an inner space defined by the first protective shell and the second protective shell. According to the protection device, the vent plug is arranged in the protection shell, muddy water and dust can be effectively prevented from entering and covering the vent plug, and the problems that the vent plug is used for a long time, the ventilation function is invalid due to muddy water covering, then sealing of the drive axle is invalid, and oil leakage and oil leakage occur are solved. And the situation that the vent plug is exposed outside and is collided by an external object to be damaged can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vent plug protection, in particular to a vent plug protection device for a drive axle. Background Art

[0002] In real-world scenarios, the vent plugs on low-floor bus drive axles are located low to the ground, making them susceptible to mud and water in rainy and snowy weather. Over extended use, mud can accumulate on the vent valves, causing the springs to malfunction and the venting function to fail. This can lead to oil seepage and leakage in the drive axle, ultimately causing insufficient lubrication of components like gears and bearings, shortening their service life and causing premature failure. When the spring-loaded vent plugs are in operation, they cannot effectively prevent water from entering the drive axle. Water ingress can emulsify the lubricant, shortening the drive axle's service life.

[0003] In addition, the vent plugs in the prior art are usually exposed to the outside, which not only increases the possibility of water ingress, but also causes certain damage to the vent plugs due to the external environment, rendering the vent function ineffective, thereby causing oil seepage and leakage in the drive axle, and ultimately resulting in insufficient lubrication of components such as gears and bearings, shortening their service life and causing premature failure. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a drive axle vent plug protection device to solve the problem in the prior art that the vent plug is exposed to the outside, the vent plug is easily infiltrated with water and accumulates dust, which in turn causes vent failure and damage to the vent plug.

[0005] The utility model provides a drive axle air plug protection device, which includes: a first protective shell, a second protective shell fixedly connected to the first protective shell, wherein one end of the first protective shell has a base, and the base has a first snap-on joint connected to the interior of the first protective shell; the second protective shell is sleeved on the outside of the first protective shell from the other end, and a second snap-on joint connected to the interior of the second protective shell is provided on the side wall of the second protective shell; the air plug is arranged in the internal space enclosed by the first protective shell and the second protective shell.

[0006] Furthermore, a clamping structure is provided on both sides of the base of the first protective shell, and a block structure is provided on the side wall of the second protective shell corresponding to the clamping structure, and the block structure is clamped together with the clamping structure.

[0007] Furthermore, an inclined chamfer is provided at one end of the block structure close to the clamping structure.

[0008] The first sealing ring is arranged on the side of the base close to the second protective shell.

[0009] In the embodiment of the utility model, the internal space surrounded by the first protective shell and the second protective shell is communicated through the first and second buckle joints.

[0010] In the embodiment of the utility model, a fixing sleeve for inserting the air-permeable plug is fixedly arranged inside the first protective shell, the fixing sleeve is coaxially arranged with the first protective shell, one end of the fixing sleeve is fixed on the base, and the other end is open.

[0011] Further, the first buckle joint is coaxially arranged with the first protective shell and communicated into the fixing sleeve.

[0012] Further, the air-permeable plug has an annular boss on the side wall, and the annular boss is provided with a second sealing ring close to the fixing sleeve.

[0013] According to the above embodiment, the protective device provided by the utility model has at least the following benefits: the protective device sets the air-permeable plug inside the protective shell, which can effectively prevent mud and dust from entering and covering the air-permeable plug, solves the problem that the air-permeable function of the air-permeable plug is invalid due to mud covering after long-term use, and further causes the sealing failure of the drive axle, resulting in oil seepage and oil leakage. The premature failure of the drive axle caused by poor lubrication of parts such as gears and bearings is solved, the maintenance cost is reduced, and the service life of the drive axle is prolonged. In addition, the protective device can avoid the air-permeable plug being exposed to the outside and being damaged by external objects. Moreover, the protective box uses a buckle structure, so that the installation is more simple.

[0014] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the scope of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0015] The following drawings are part of the specification of the utility model, which illustrate the example embodiments of the utility model, and the accompanying drawings and the description of the specification are used to illustrate the principle of the utility model.

[0016] Figure 1 The explosion of the protective device for the air-permeable plug of the drive axle provided by the utility model Figure 1 .

[0017] Figure 2 The explosion of the protective device for the air-permeable plug of the drive axle provided by the utility model Figure 2 .

[0018] Figure 3 An assembly view of the drive axle breather plug protection device is provided.

[0019] Explanation of reference signs:

[0020] 1 - first protection housing, 2 - second protection housing, 3 - first snap joint, 4 - second snap joint, 5 - breather plug, 6 - first sealing ring, 7 - second sealing ring;

[0021] 11 - base, 12 - clamping structure, 13 - fixing sleeve;

[0022] 21 - clamping block structure. DETAILED DESCRIPTION

[0023] The detailed description of the various exemplary embodiments of the present application should not be considered to be limiting of the present application, but rather a description of certain embodiments of the present application, aspects, features and implementations thereof.

[0024] Many modifications and variations of the specific embodiments of the present application described herein can be made in light of the above teachings. Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. For example, the various examples of the present application can be combined in any way. The application is intended to be limited only by the claims.

[0025] The present application provides a drive axle breather plug protection device, as Figures 1-3 shown is the overall structure schematic diagram of the protection device. In the specific embodiments, the protection device comprises: a first protection housing 1, a second protection housing 2 fixedly connected with the first protection housing 1. Wherein, the first protection housing 1 has a base 11 at one end, and the base 11 has a first snap joint 3 communicating the inside of the first protection housing 1.

[0026] The second protection housing 2 is sleeved outside the first protection housing 1 from the other end thereof. And the second protection housing 2 is provided with a second snap joint 4 communicating the inside of the second protection housing 2 on the side wall.

[0027] The breather plug 5 is arranged in the internal space surrounded by the first protection housing 1 and the second protection housing 2.

[0028] The internal space surrounded by the first protection housing 1 and the second protection housing 2 is communicated through the first snap joint 3 and the second snap joint 4. That is, the gas can enter from the first snap joint 3, pass through the breather plug 5 and then flow out from the second snap joint 4.

[0029] In the embodiment of the present invention, the base 11 of the first protective housing 1 is provided with a clamping structure 12 on both sides, and the side walls of the second protective housing 2 are provided with a block structure 21 corresponding to the clamping structure 12. The block structure 21 cooperates with the clamping structure 12 to clamp. During the sliding connection between the first protective housing 1 and the second protective housing 2, the block structure 21 slides into the clamping structure 12 and clamps, thereby achieving a fixed connection between the first protective housing 1 and the second protective housing 2.

[0030] Furthermore, an end of the block structure 21 close to the clamp structure 12 is provided with an inclined chamfer to facilitate the block structure 21 to slide into the clamp structure 12 .

[0031] In an embodiment of the present invention, a first sealing ring 6 is provided on one side of the base 11 close to the second protective shell 2 to seal the first protective shell 1 and the second protective shell 2 after being fixedly connected, thereby reducing the risk of water and dust ingress.

[0032] In the specific implementation of the present invention, a fixing sleeve 13 for inserting the ventilation plug 5 is fixedly provided inside the first protective shell 1. The fixing sleeve 13 is coaxially arranged with the first protective shell 1. One end of the fixing sleeve 13 is fixed on the base 11, and the other end is open. The inner wall of the opening has a thread, and the outer wall of the connecting end of the ventilation plug 5 has a matching thread. The ventilation plug 5 and the fixing sleeve 13 are fixedly connected together through a threaded connection.

[0033] Furthermore, the first snap-on connector 3 is coaxially arranged with the first protective shell 1 and is connected to the fixing sleeve 13 , so that the incoming air flow can pass through the vent plug 5 .

[0034] Furthermore, an annular boss is provided on the side wall of the vent plug 5 , and a second sealing ring 7 is provided on the side of the annular boss close to the fixing sleeve 13 to seal the connection.

[0035] The above description is only an illustrative embodiment of the present invention. Without departing from the concept and principle of the present invention, any equivalent changes and modifications made by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A drive axle vent plug protection device, characterized in that: The protection device comprises: a first protection shell (1), and a second protection shell (2) fixedly connected to the first protection shell (1), wherein: One end of the first protective shell (1) has a base (11), and the base (11) has a first snap-on connector (3) communicating with the interior of the first protective shell (1); The second protective shell (2) is sleeved on the outside of the first protective shell (1) from the other end thereof, and a second snap-on connector (4) communicating with the interior of the second protective shell (2) is provided on the side wall of the second protective shell (2); The vent plug (5) is arranged in the internal space enclosed by the first protective shell (1) and the second protective shell (2).

2. The drive axle vent plug protection device according to claim 1, characterized in that: A clamping structure (12) is provided on both sides of the base (11) of the first protective shell (1), and a block structure (21) is provided on the side wall of the second protective shell (2) corresponding to the clamping structure (12), and the block structure (21) is tightly engaged with the clamping structure (12).

3. The drive axle vent plug protection device according to claim 2, characterized in that: An end of the clamping block structure (21) close to the clamping structure (12) is provided with an inclined chamfer.

4. The drive axle vent plug protection device according to claim 1, characterized in that: A first sealing ring (6) is provided on one side of the base (11) close to the second protective shell (2).

5. The drive axle vent plug protection device according to claim 1, characterized in that: The internal space enclosed by the first protective shell (1) and the second protective shell (2) is communicated via the first snap-on joint (3) and the second snap-on joint (4).

6. The drive axle vent plug protection device according to claim 5, characterized in that: A fixing sleeve (13) for inserting the vent plug (5) is fixedly provided inside the first protective shell (1); the fixing sleeve (13) is coaxially arranged with the first protective shell (1); one end of the fixing sleeve (13) is fixed to the base (11), and the other end is open.

7. The drive axle vent plug protection device according to claim 6, characterized in that: The first snap-on connector (3) is coaxially arranged with the first protective shell (1) and communicates with the interior of the fixing sleeve (13).

8. The drive axle vent plug protection device according to claim 6, characterized in that: The side wall of the vent plug (5) is provided with an annular boss, and a second sealing ring (7) is provided on the side of the annular boss close to the fixing sleeve (13).

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