CN216407687U

CN216407687U - Pressure relief mechanism and transmission thereof

Info

Publication number: CN216407687U
Application number: CN202122237947.2U
Authority: CN
Inventors: 肖福禄; 吴刚
Original assignee: Chongqing Jianan Industry And Trade Co ltd
Current assignee: Chongqing Jianan Industry And Trade Co ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-04-29
Anticipated expiration: 2031-09-15

Abstract

The utility model provides a pressure relief mechanism and a transmission thereof, and relates to the technical field of transmissions, the pressure relief mechanism comprises a body, a sealing assembly and a joint fixedly connected to the body, wherein a first channel and a second channel which are vertical and through are respectively arranged in the body and the joint, two ends of the second channel are respectively communicated with the outside and the first channel, and the sealing assembly is vertically and elastically connected to the inside of the joint through an elastic piece and used for separating the first channel from the second channel; it has solved the problem that easily pollutes the derailleur casing during pressure release among the prior art.

Description

Pressure relief mechanism and transmission thereof

Technical Field

The utility model relates to the technical field of transmissions, in particular to a pressure relief mechanism and a transmission thereof.

Background

An automatic pressure relief device is mostly arranged on the speed changer to prevent the speed changer from working normally due to overlarge air pressure in an inner cavity of the speed changer; the pure mechanical automatic pressure relief device is still widely applied due to the fact that the pure mechanical automatic pressure relief device is reliable in operation and low in cost, the structure of the pure mechanical automatic pressure relief device in the prior art is not reasonable enough, high-pressure gas containing oil stains in the transmission is directly sprayed out to the shell of the transmission through a pressure relief opening of the pressure relief device, the oil stains are prone to being stuck on the shell of the transmission to cause pollution when the oil stains are cooled, and the experience of a user is poor.

SUMMERY OF THE UTILITY MODEL

In view of the shortcomings in the prior art, a first object of the present invention is to provide a pressure relief mechanism, which solves the problem of the prior art that the transmission housing is easily polluted during pressure relief.

According to an embodiment of the utility model, the pressure relief mechanism comprises a body, a sealing assembly and a joint fixedly connected to the body, wherein a first channel and a second channel which are vertical and through are respectively arranged in the body and the joint, two ends of the second channel are respectively communicated with the outside and the first channel, and the sealing assembly is vertically and elastically connected to the inside of the joint through an elastic piece and used for separating the first channel from the second channel.

Compared with the prior art, the utility model has the following beneficial effects: install this mechanism earlier during the use on the casing of derailleur so that the inner chamber and the first passageway of derailleur are linked together, because seal assembly passes through the vertical elastic connection of elastic component in the joint, the elasticity that this gas can overcome the elastic component when the gas pressure in the derailleur is too big upwards jack-up seal assembly, seal assembly loses sealed effect this moment, gas passes through first passageway and second passageway in proper order and finally discharges to the external world, the casing of derailleur can be kept away from to the final escape orifice of gas to the vertical setting of first passageway and second passageway, avoid the casing of gas pollution derailleur.

A second object of the present invention is to provide a transmission that solves the problem of the prior art that the transmission case is easily contaminated when pressure is relieved.

According to an embodiment of the present invention, a transmission is provided with the above pressure relief mechanism.

Compared with the prior art, the utility model has the following beneficial effects: through install above-mentioned pressure relief mechanism on the derailleur, the casing that gaseous can be vertically upwards kept away from the derailleur is discharged, and the effectual pollution of avoiding gaseous to the derailleur casing.

Drawings

FIG. 1 is a schematic structural diagram of a pressure relief mechanism according to an embodiment of the utility model;

FIG. 2 is a schematic view of a pressure relief mechanism with a pipeline removed according to an embodiment of the present invention;

fig. 3 is a schematic view of the internal structure of fig. 2.

In the above drawings: 1. a body; 101. a polished rod segment; 102. a screw section; 103. a first channel; 2. a nut; 3. a seal ring; 4. a gasket; 5. a spring; 6. a joint; 601. an upper connecting portion; 602. a lower connecting portion; 603. a second channel; 7. a pipeline.

Detailed Description

The technical solution of the present invention is further explained with reference to the drawings and the embodiments.

As shown in fig. 2 and 3, a pressure relief mechanism includes a body 1, a sealing assembly and a joint 6 fixedly connected to the body 1, wherein a first channel 103 and a second channel 603 which are vertical and through are respectively arranged in the body 1 and the joint 6, two ends of the second channel 603 are respectively communicated with the outside and the first channel 103, the sealing assembly is vertically and elastically connected to the joint 6 through an elastic member and is used for blocking the first channel 103 and the second channel 603; specifically, in this embodiment, the first channel 103 and the second channel 603 are both cylindrical, and the inner diameter of the first channel 103 is smaller than that of the second channel 603, so that the gas in the transmission can be conveniently pushed up by the first channel 103 and then released through the second channel 603.

Install this mechanism earlier during the use on the casing of derailleur so that the inner chamber and the first passageway 103 of derailleur are linked together, because seal assembly passes through the vertical elastic connection of elastic component in connecting 6, this gas can overcome the elasticity of elastic component and upwards jack-up seal assembly when the gas pressure in the derailleur is too big, seal assembly loses sealed effect this moment, gas passes through first passageway 103 and second passageway 603 in proper order and finally discharges to the external world, the casing of derailleur is kept away from to the final escape orifice that first passageway 103 and second passageway 603 vertical setting can make gas, and then avoid gas to pollute it.

As shown in fig. 2 and fig. 3, an embodiment of the present invention provides a pressure relief mechanism, where the body 1 includes a polish rod section 101 and a screw rod section 102 that are fixedly connected to each other, in this embodiment, the screw rod section 102 and the polish rod section 101 are integrally formed, the screw rod section 102 is provided with an external thread, and a casing of the transmission is provided with an internal thread matching with the external thread, the polish rod section 101 is sleeved and fixedly connected with a nut 2, and the nut 2 is arranged to facilitate an operator to rotate the body 1 to screw the screw rod section 102 into the casing of the transmission; the bottom end of the joint 6 is sleeved and fixedly connected outside the polished rod section 101, specifically, the inner diameter of the joint 6 is in interference fit with the outer diameter of the polished rod section 101, and in order to further fix the joint 6 and the polished rod section firmly, a conventional hoop and the like can be arranged on the joint 6 for reinforcement; in addition, the nut 2 realizes the positioning of the joint 6, and the bottom end of the joint 6 abuts against the upper end face of the nut 2, namely, the overlapping length of the joint 6 and the polished rod section 101 meets the installation requirement, so that the joint 6 and the polished rod section 101 are ensured to be reliably connected.

As shown in fig. 2 and 3, the embodiment of the present invention provides a pressure relief mechanism, the sealing assembly includes a sealing ring 3 and a disc-shaped gasket 4, the elastic member includes a spring 5, and a bottom end of the elastic member abuts against a top end of the gasket 4 to press the sealing ring 3; the sealing assembly is selected from a conventional gasket 4 and a sealing ring 3, the gasket 4 is convenient to obtain and reliable in sealing, the spring 5 can press the gasket 4 downwards by means of self elasticity so that the sealing ring 3 is attached to the inner wall of the joint 6 to realize sealing, and the gasket 4 can be jacked upwards to automatically relieve pressure when the air pressure in the transmission is too high; of course, the structure of the sealing assembly is not limited to the above-mentioned one, and it is also possible to set the bottom end of the second channel 603 as a V-shaped closing-in and set the sealing assembly as a truncated cone (not shown in the figure) matching with the V-shaped closing-in, where the larger end of the truncated cone is connected to the bottom end of the spring 5, the spring 5 presses the truncated cone at the V-shaped closing-in, and the side surface of the truncated cone and the side wall of the V-shaped closing-in can also achieve sealing and smooth pressure relief.

As shown in fig. 2 and fig. 3, an embodiment of the present invention provides a pressure relief mechanism, where the joint 6 includes an upper connecting portion 601 and a lower connecting portion 602, both of which are tubular and fixedly connected, in this embodiment, the upper connecting portion 601 and the lower connecting portion 602 are integrally formed tube heads, an inner diameter of the upper connecting portion 601 is smaller than an inner diameter of the lower connecting portion 602 and the upper connecting portion and the lower connecting portion are coaxial, and two ends of the spring 5 respectively abut against a bottom end of the upper connecting portion 601 and a top end of the gasket 4; by adopting the scheme, the lower connecting part 602 provides a larger mounting space for the spring 5 and the sealing assembly, and a step surface is formed at the joint of the upper connecting part 601 and the lower connecting part 602 and used for limiting the top end of the spring 5; of course, the installation manner of the spring 5 and the sealing assembly is not limited to the above-mentioned one, for example, the top of the polished rod segment 101 is closed and an annular limiting table (not shown in the figure) is arranged in the polished rod segment, the top end and the bottom end of the sealing ring 3 respectively abut against the bottom end of the gasket 4 and the top end of the limiting table, and the two ends of the spring 5 respectively abut against the closed end of the polished rod segment 101 and the top end of the gasket 4; it should be noted that, in this embodiment, the spring 5 is installed in the polished rod section 101 before the top end of the polished rod section 101 is closed by using the disk-riveting machine, and the closed end of the polished rod section 101 limits the top end of the spring 5; with the above arrangement, the spring 5 is directly disposed in the polished rod segment 101, which shortens the overall length of the mechanism and simplifies the structure of the joint 6.

As shown in fig. 1 and 2, in the pressure relief mechanism according to the embodiment of the present invention, an outer ring of the upper connection portion 601 is fixedly provided with a barb-shaped boss, the boss is sleeved and fixedly connected with a pipeline 7 communicated with the outside, specifically, an inner wall of the pipeline 7 is provided with a barb matched with the boss, the barb and the boss are mutually hooked to each other, so that the pipeline 7 is not easy to loosen, and it should be understood that the pipeline 7 or the boss should have a certain flexible deformation capability so as to smoothly connect the two; the line 7 further conducts the gas away from the transmission housing, avoiding contamination thereof.

The embodiment of the utility model provides a transmission, wherein the transmission (not shown in the figure) is provided with the pressure relief mechanism, and particularly, a connecting port with internal threads is processed on the transmission, and the screw section 102 is directly connected to the connecting port in a threaded manner, so that the two can be installed; the gas can be vertically upwards far away from the shell of the transmission and discharged, and the pollution of the gas to the shell of the transmission is effectively avoided.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. A pressure relief mechanism, characterized by: the sealing device comprises a body (1), a sealing assembly and a joint (6) fixedly connected to the body (1), wherein a first vertical channel (103) and a second channel (603) which are communicated with each other are arranged in the body (1) and the joint (6) respectively, two ends of the second channel (603) are communicated with the outside and the first channel (103), and the sealing assembly is connected in the joint (6) through an elastic piece in a vertical elastic mode and used for separating the first channel (103) from the second channel (603).

2. A pressure relief mechanism as claimed in claim 1, wherein: the body (1) comprises an upper and a lower fixedly connected polished rod section (101) and a screw rod section (102), the polished rod section (101) is sleeved with a fixedly connected nut (2), and the bottom end of the joint (6) is sleeved with a fixedly connected nut outside the polished rod section (101).

3. A pressure relief mechanism as claimed in claim 2, wherein: the sealing assembly comprises a sealing ring (3) and a gasket (4), the elastic piece comprises a spring (5) and the bottom end of the elastic piece is abutted against the top end of the gasket (4) so as to compress the sealing ring (3).

4. A pressure relief mechanism as claimed in claim 3, wherein: the top of polished rod section (101) closes up and is equipped with annular spacing platform in it, the top and the bottom of sealing washer (3) are contradicted respectively the bottom of gasket (4) and on the top of spacing platform, the both ends of spring (5) are supported respectively and are leaned on the department of closing up of polished rod section (101) and on the top of gasket (4).

5. A pressure relief mechanism as claimed in claim 3, wherein: the connector (6) comprises an upper connecting part (601) and a lower connecting part (602) which are both tubular and fixedly connected, the inner diameter of the upper connecting part (601) is smaller than that of the lower connecting part (602) and the upper connecting part and the lower connecting part are coaxial, and two ends of the spring (5) are respectively abutted to the bottom end of the upper connecting part (601) and the top end of the gasket (4).

6. The pressure relief mechanism of claim 5, wherein: the outer ring of the upper connecting part (601) is fixedly provided with a barb-shaped boss, and the boss is sleeved with and fixedly connected with a pipeline (7) communicated with the outside.

7. A transmission, characterized by: the transmission having mounted thereon a pressure relief mechanism as claimed in claim 1.