CN220204611U

CN220204611U - Waterproof vent plug of gearbox and gearbox

Info

Publication number: CN220204611U
Application number: CN202321432145.XU
Authority: CN
Inventors: 邵柏川; 祝亚民
Original assignee: Special Vehicle Technology Center of Hubei Aerospace Technology Research Institute; Hubei Sanjiang Space Wanshan Special Vehicle Co Ltd
Current assignee: Special Vehicle Technology Center of Hubei Aerospace Technology Research Institute; Hubei Sanjiang Space Wanshan Special Vehicle Co Ltd
Priority date: 2023-06-06
Filing date: 2023-06-06
Publication date: 2023-12-19
Anticipated expiration: 2033-06-06

Abstract

The embodiment of the application relates to the field of gearboxes, in particular to a waterproof vent plug of a gearbox and the gearbox, wherein the waterproof vent plug comprises: a vent plug body; the transition joint is internally hollow and provided with a channel, one end of the transition joint is connected with the gearbox main body, and the other end of the transition joint is connected with the vent plug main body; the visor sets up on transition joint, and the visor covers the vent plug main part and establishes, and the open end of visor and transition joint's outer wall connection, increases the distance of vent plug main part relative to the gearbox main part through transition joint, covers the gap of being connected between vent plug main part and the transition joint simultaneously through the visor, effectively avoids water to get into the gearbox main part from the vent plug main part in, has effectively reduced the possibility that water got into the gearbox main part in the carwash process, and then effectively avoids the transmission lubricating oil to get into water, produces the influence to the part in the gearbox main part.

Description

Waterproof vent plug of gearbox and gearbox

Technical Field

The embodiment of the application relates to the field of gearboxes, in particular to a waterproof vent plug of a gearbox and the gearbox.

Background

The hydraulic mechanical speed changer mainly comprises a hydraulic torque converter and a mechanical speed changer, and the main functions of the hydraulic mechanical speed changer are to adjust the torque and the rotating speed output by an engine so as to adapt to the running requirements of an automobile under different working conditions. The torque converter adopts hydraulic transmission, and can automatically and steplessly change the transmission ratio and the torque ratio in a certain range according to the running resistance of the vehicle; the transmission further adjusts the torque and the rotating speed output by the torque converter by arranging a multi-gear mode, and the output range is enlarged.

In the related art, when a chassis is washed, the side face of a breather plug of a transmission is washed, water enters the main box of the transmission from the breather plug, so that under the condition that the transmission is normally ventilated after water is mixed into lubricating oil of the transmission, the water content of the lubricating oil of the transmission is not more than 0.03%, an emulsifying phenomenon is avoided, when the lubricating oil of the transmission is fed, the water and the lubricating oil form emulsion under the severe stirring of a gear of the transmission, after the lubricating oil is emulsified, aggregation is formed at a high-low grade switching air valve, so that the high-low grade switching air valve cannot be lubricated by oil mist, a top bead is easy to appear in a rust phenomenon, the top bead corrosion clamping stagnation of the high-low grade switching air valve can appear along with further aggravation of corrosion, even the top bead falls off, and the function of the high-low grade switching air valve is lost.

Disclosure of Invention

The embodiment of the application provides a waterproof vent plug of a gearbox and the gearbox, and aims to solve the problem that water easily enters the gearbox from the vent plug when a chassis is washed.

A first aspect of the present embodiments provides a waterproof vent plug for a gearbox, the waterproof vent plug comprising:

a vent plug body;

the transition joint is internally provided with a channel in a hollow way, one end of the transition joint is connected with the gearbox main body, and the other end of the transition joint is connected with the vent plug main body;

the protection cover is arranged on the transition joint, the ventilation plug main body is covered by the protection cover, and the opening end of the protection cover is connected with the outer wall of the transition joint.

Optionally, a first sealing gasket used for being in sealing connection with the gearbox main body and a second sealing gasket used for being in sealing connection with the vent plug main body are respectively arranged at two ends of the transition joint.

Optionally, the transition joint is detachably connected with the gearbox main body, the vent plug main body and the protective cover.

Optionally, one end of the transition joint is provided with a connecting section matched with the mounting hole on the gearbox main body, an external thread is arranged on the outer wall of the connecting section, and an internal thread for the threaded connection of the vent plug main body is arranged on the inner wall of the passage at the other end of the transition joint.

Optionally, the outer diameter of the connection section is the same as the outer diameter of the vent plug body end.

Optionally, the protection cover is connected with the transition joint through a connecting pin, and a plurality of groups of adapting connecting holes are formed in the protection cover and the transition joint.

Optionally, a gap is left between the protective cover and the transition joint.

A second aspect of an embodiment of the present application provides a gearbox comprising a waterproof vent plug as described in any one of the preceding claims.

The beneficial effects are that:

the utility model provides a waterproof breather plug of gearbox and gearbox, through setting up the transition joint between gearbox main part and breather plug main part, the passageway in the breather plug main part passes through in the transition joint and the gearbox main part in the course of the work, thereby make the breather plug main part normally work, wash from the breather plug main part side of derailleur when carrying out chassis washing, distance increase relative to the gearbox main part through the transition joint with the breather plug main part, cover the junction gap between breather plug main part and the transition joint through the visor simultaneously, effectively avoid water to get into in the gearbox main part from the breather plug main part, effectively reduced the possibility that the in-process water of washing got into the gearbox main part, and then effectively avoid the derailleur lubricating oil to get into water, the part in the gearbox main part produces the influence.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments of the present application will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Figure 1 is a schematic illustration of a waterproof vent plug according to one embodiment of the present application.

Reference numerals illustrate: 1. a vent plug body; 2. a transition joint; 21. a channel; 3. a protective cover; 4. a first gasket; 5. a second gasket; 6. a connecting pin; 61. and a connection hole.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The breather plug is positioned on the upper surface of the main gearbox, the mounting height is lower than that of the upper surface of the main gearbox body, when the chassis is washed, water is easy to enter the gearbox from the breather plug by flushing from the side surface of the breather plug, so that water is mixed into the gearbox lubricating oil, the lubricating oil does not contain water or has extremely low water content, the damage to the usability of the oil is extremely low, and the oil performance degradation evaluation index of the lubricating oil used in general machinery prescribes that if the water content exceeds 0.1%, the performance degradation of the lubricating oil cannot be continuously used, new oil needs to be replaced, and the water content of the gearbox lubricating oil does not exceed 0.03% under the condition of normal ventilation of the gearbox, so that the emulsification phenomenon does not occur.

However, when the transmission lubricating oil is fed with water, the water can react with the lubricating oil to generate acid, colloid and fatlute, the acid value is increased, the oil is deteriorated, the water can also separate out additives in the oil, the water and the lubricating oil form emulsion under the severe stirring of the transmission gear, after the lubricating oil is emulsified, the emulsion can cause metal corrosion, and aggregation is formed at the high-low grade switching air valve, so that the high-low grade switching air valve cannot obtain oil mist lubrication, a top bead corrosion phenomenon is caused, the top bead corrosion clamping stagnation of the high-low grade switching air valve is easy to occur along with the further aggravation of corrosion, even the top bead falls off, and the function of the high-low grade switching air valve is lost.

In view of this, the embodiment of the application provides a waterproof vent plug of a gearbox and the gearbox.

A first aspect of the present embodiments provides a waterproof vent plug for a gearbox, referring to fig. 1, the waterproof vent plug includes:

a vent plug body 1; the vent plug main body 1 is of a model which is matched with the vent hole of the gearbox main body in the direction, namely, the vent plug main body 1 can be directly arranged on the gearbox main body to play a role in exhausting.

The transition joint 2 is internally provided with a channel 21 in a hollow manner, one end of the transition joint 2 is connected with the gearbox main body, and the other end of the transition joint 2 is connected with the vent plug main body 1;

the transition joint 2 adopts corrosion-resistant metal material to make, and the cavity passageway 21 of transition joint 2 is exhaust passage 21 promptly, and ventilation plug main part 1 and transition joint 2 coaxial line connection communicate with the gearbox main part through passageway 21 in the transition joint 2 to make ventilation plug main part 1 can play the carminative effect, through setting up the transition joint 2 with ventilation plug main part 1 for the high too high of derailleur simultaneously, reduce the condition that water got into ventilation plug main part 1.

The protection cover 3 is arranged on the transition joint 2, the protection cover 3 covers the vent plug main body 1, and the opening end of the protection cover 3 is connected with the outer wall of the transition joint 2.

The cavity for holding vent plug main part 1 in the visor 3, the internal diameter of visor 3 open end is greater than the maximum diameter of vent plug main part 1 and transition joint 2, is connected back with vent plug main part 1 and transition joint 2, establishes visor 3 cover on vent plug main part 1, then with visor 3 with transition joint 2 be connected can, wherein, visor 3 can be the metal material, also can be the plastics material to improve corrosion-resistant effect.

Through setting up transition joint 2 between gearbox main part and breather plug main part 1, the breather plug main part 1 communicates in the passage 21 and the gearbox main part in the course of the work in through transition joint 2, thereby make breather plug main part 1 normal operating, wash from the breather plug main part 1 side of derailleur when carrying out chassis washing, distance increase for the gearbox main part with breather plug main part 1 through transition joint 2, cover the junction gap between breather plug main part 1 and transition joint 2 simultaneously through visor 3, effectively avoid water from breather plug main part 1 entering the gearbox main part in, effectively reduced the possibility that the in-process water got into the gearbox main part of washing, and then effectively avoid derailleur lubricating oil to intake, the part in the gearbox main part produces the influence.

Based on the waterproof vent plug, the present application provides examples of some specific embodiments, and on the premise of not contradicting each other, each example can be arbitrarily combined to form a new waterproof vent plug of a gearbox main body, and it should be understood that, for the new waterproof vent plug of a gearbox formed by combining any examples, all fall into the protection scope of the present application.

In some embodiments, both ends of the transition joint 2 are respectively provided with a first gasket 4 for sealing connection with the gearbox body and a second gasket 5 for sealing connection with the breather plug body 1.

The first sealing gasket 4 is sleeved on the vent plug main body 1, and after the vent plug main body 1 is connected with the transition joint 2, a gap between the vent plug main body 1 and the transition joint 2 is plugged through the first sealing gasket 4, so that the air tightness between the vent plug main body 1 and the transition joint 2 is improved, and meanwhile, water is prevented from entering from the gap between the vent plug main body 1 and the transition joint 2.

The second sealing gasket 5 is sleeved on one end of the transition joint 2, connected with the gearbox main body, and after the transition joint 2 is connected with the gearbox main body, a gap between the transition joint 2 and the gearbox main body is plugged through the second sealing end, so that leakage of gas from the gap between the transition joint 2 and the gearbox main body is avoided, water is prevented from entering, and the tightness between the transition joint 2 and the gearbox main body is further improved.

In some embodiments, the transition joint 2 is detachably connected to the gearbox body, the vent plug body 1 and the protective cover 3.

Specifically, one end of the transition joint 2 is provided with a connecting section matched with a mounting hole in the gearbox main body, an external thread is arranged on the outer wall of the connecting section, and an internal thread for the threaded connection of the vent plug main body 1 is arranged on the inner wall of a channel 21 at the other end of the transition joint 2.

During installation, become integrative with ventilation plug main part 1 and transition joint 2 threaded connection, then directly with the connection that transition joint 2 can accomplish transition joint 2 with threaded connection on the gearbox main part, make installation or change process convenient and fast more, effectively improved the practicality of this application.

According to the different types of the gearbox main body and the vent plug main body 1, the connection modes of the two ends of the transition joint 2 can be other modes, for example, when the vent plug main body 1 is connected with the gearbox main body in a plugging mode, the two ends of the transition joint 2 are connected with the vent plug main body and the gearbox in a plugging mode in an adaptive mode.

In some embodiments, the outer diameter of the connection section is the same as the outer diameter of the end of the vent plug body 1.

In the related art, the vent plug main body 1 is often directly installed on the gearbox main body, so the transition joint 2 is arranged to be in a model matched with the vent plug main body 1 and the gearbox, on the existing basis, the transition joint 2 is directly connected between the vent plug main body 1 and the gearbox main body, the modification of the existing device can be completed, the waterproof vent plug in the embodiment is formed, the direct modification of the existing device is realized, the vent plug main body 1 is not required to be replaced or the gearbox main body is modified, and the applicability of the application is greatly improved.

The protection cover 3 is connected with the transition joint 2 through a connecting pin 6, and a plurality of groups of adaptive connecting holes 61 are formed in the protection cover 3 and the transition joint 2.

Specifically, in this embodiment, at least two groups of connection holes 61 are formed, the connection pins 6 are pins, the connection holes 61 include a through hole formed in the protective cover 3 and adapted to the connection pins 6, and a threaded hole formed in the transition joint 2 along a radial direction of the connection holes, when the protective cover 3 is connected to the transition joint 2, the through hole coincides with the threaded hole, and the protective cover 3 can be fixed on the transition joint 2 by screwing the connection pins 6 in the connection holes 61.

In other embodiments, the protection cover 3 may be directly connected to the transition joint 2 by fastening or screwing, for example, an external thread is formed on the outer wall of the transition joint 2, and an adapted internal thread is formed on the inner wall of the protection cover 3, so that the protection cover 3 is directly screwed on the transition joint 2, and the connection process is more convenient.

Specifically, a gap is left between the protective cover 3 and the transition joint 2.

The protection cover 3 is not in sealing connection with the transition joint 2, and when the protection cover 3 is connected with the transition joint 2, a gap exists between the edge of the protection cover 3 and the transition joint 2, so that the vent plug main body 1 in the protection cover 3 can normally perform exhaust work in the working process, and a vent groove can be formed in the inner wall of the protection cover 3, or the size of the protection cover 3 is slightly larger than that of the transition joint 2.

A second aspect of the present application provides a gearbox comprising a gearbox body, further comprising a waterproof vent plug provided by embodiments.

It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.

It should also be noted that, in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and to simplify the description, but do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Moreover, relational terms such as "first" and "second" may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions, or order, and without necessarily being construed as indicating or implying any relative importance. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or terminal device comprising the element.

The foregoing has outlined rather broadly the more detailed description of the present application, and the detailed description of the principles and embodiments herein may be better understood as being a limitation on the present application. Also, various modifications in the details and application scope may be made by those skilled in the art in light of this disclosure, and all such modifications and variations are not required to be exhaustive or are intended to be within the scope of the disclosure.

Claims

1. A waterproof vent plug for a gearbox, the waterproof vent plug comprising:

a vent plug body (1);

the transition joint (2) is internally provided with a channel (21) in a hollow mode, one end of the transition joint (2) is connected with the gearbox main body, and the other end of the transition joint is connected with the vent plug main body (1);

the protection cover (3), the protection cover (3) is arranged on the transition joint (2), the protection cover (3) covers the ventilation plug main body (1), and the opening end of the protection cover (3) is connected with the outer wall of the transition joint (2).

2. The waterproof venting plug according to claim 1, characterized in that both ends of the transition joint (2) are provided with a first sealing gasket (4) for sealing connection with the gearbox body and a second sealing gasket (5) for sealing connection with the venting plug body (1), respectively.

3. The waterproof venting plug according to claim 1, characterized in that the transition joint (2) is detachably connected to the gearbox body, the venting plug body (1) and the protective cover (3).

4. The waterproof ventilation plug according to claim 2, wherein one end of the transition joint (2) is provided with a connecting section matched with a mounting hole in the gearbox main body, an external thread is formed on the outer wall of the connecting section, and an internal thread for the threaded connection of the ventilation plug main body (1) is formed on the inner wall of a channel (21) at the other end of the transition joint (2).

5. A waterproof vent-plug according to claim 4, wherein the outer diameter of the connecting section is the same as the outer diameter of the end of the vent-plug body (1).

6. The waterproof ventilation plug according to claim 1, wherein the protection cover (3) is connected with the transition joint (2) through a connecting pin (6), and a plurality of groups of matched connecting holes (61) are formed in the protection cover (3) and the transition joint (2).

7. The waterproof venting plug according to claim 1, characterized in that a gap is left between the protective cover (3) and the transition joint (2).

8. A gearbox comprising a waterproof breather plug according to any one of claims 1 to 7.