CN112460237A - Ventilation device for speed reducer - Google Patents
Ventilation device for speed reducer Download PDFInfo
- Publication number
- CN112460237A CN112460237A CN202011483432.4A CN202011483432A CN112460237A CN 112460237 A CN112460237 A CN 112460237A CN 202011483432 A CN202011483432 A CN 202011483432A CN 112460237 A CN112460237 A CN 112460237A
- Authority
- CN
- China
- Prior art keywords
- speed reducer
- shell
- housing
- sealing gasket
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention proposes a breather device for a retarder comprising a housing (10) communicating with the interior of the retarder, one end of the shell (10) close to the speed reducer is provided with a movable sealing gasket (20), the other end of the shell (10) is provided with a ventilation cap (50), a spring (30) is arranged between the sealing gasket (20) and the vent cap (50), a vent hole (40) which is communicated with the inside and the outside is arranged at one end of the shell (10) close to the vent cap (50), when the internal pressure of the speed reducer is higher than the external pressure, the pressure inside the speed reducer pushes the sealing gasket (20) to move inwards, so that the spring (30) is compressed, when the gasket (20) is moved to the inside of the vent hole (40) of the case, the inside of the case (10) is communicated with the outside atmosphere, the internal pressure of the speed reducer is removed, so that the phenomenon that internal parts of the speed reducer are damaged or oil leakage occurs due to the fact that the internal pressure of the speed reducer is too high can be avoided. The invention also has the characteristics of simple structure, low manufacturing cost, simple and convenient and quick assembly and the like.
Description
Technical Field
The invention relates to a speed reducer, in particular to a ventilating device for the speed reducer, which can quickly release the pressure in a speed reducer body.
Background
Various reduction mechanisms are widely used in the field of machinery. In order to avoid the influence on the normal operation of the speed reducer due to overhigh pressure in the speed reducer, the speed reducer is generally provided with the ventilating device which is used for communicating the inside of the speed reducer with the outside atmosphere when the gas pressure in the speed reducer body is overhigh, so that the internal pressure of the speed reducer is reduced, and the phenomenon that the internal parts of the speed reducer are damaged or oil leakage occurs due to overhigh pressure in the speed reducer is avoided. The existing ventilation device for the speed reducer is always in a state of being communicated with the atmosphere in the using process, so that impurities can easily enter the inside of the speed reducer body, the speed reducer is damaged, and particularly in some places with severe environments, the internal structure of the speed reducer can be damaged in an accelerated manner. In fact, the breather does not need to be normally open, and only needs to be exhausted after the pressure of the gas in the reduction gearbox rises to a certain value.
Disclosure of Invention
The invention aims to solve the problems and provides the ventilating device for the speed reducer, which can quickly release the pressure in the speed reducer body, has simple structure and low manufacturing cost, and is simple and quick to assemble.
In order to achieve the above object, the present invention provides a venting device for a decelerator, the device includes a housing communicated with the inside of the decelerator, a movable sealing gasket is provided at one end of the housing near the decelerator, a venting cap is provided at the other end of the housing, a spring is provided between the sealing gasket and the venting cap, and a vent hole communicated with the inside and the outside is provided at one end of the housing near the venting cap, so that when the internal pressure of the decelerator is higher than the external pressure, the pressure inside the decelerator pushes the sealing gasket to move inwards, the spring is compressed, and when the sealing gasket moves to the inner side of the vent hole of the housing, the inside of the housing is communicated with the outside atmosphere, and the internal pressure.
The vent cap is fixedly connected to the free end part of the shell. The shell is a cylindrical body and is connected with the speed reducer through an external thread arranged at one end. The vent hole is a section of arc-shaped hole arranged along the circumferential direction of the shell. A gap which can enable the sealing gasket to move in the shell is arranged between the sealing gasket and the inner wall of the shell.
The invention effectively solves the problems of the ventilation structure of the traditional speed reducer. The automatic ventilation structure of the speed reducer is arranged, so that when the internal pressure of the speed reducer is too high, the sealing gasket and the spring in the ventilation device shell communicated with the speed reducer are driven to move by the internal pressure of the speed reducer, the vent hole is opened, and the speed reducer body is communicated with the external atmosphere, so that the internal pressure of the speed reducer can be quickly released, and the phenomenon that internal parts of the speed reducer are damaged or oil leakage occurs due to the fact that the internal pressure of the speed reducer is too high is avoided. The invention also has the characteristics of simple structure, reliable work, low manufacturing cost, simple and convenient and quick assembly and the like.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The following examples are further illustrative and supplementary to the present invention and do not limit the present invention in any way.
Referring to fig. 1, the venting device for a decelerator according to the present invention includes a housing 10, a packing 20, a spring 30, a vent hole 40, and a vent cap 50.
As shown in fig. 1, the housing 10 is a cylindrical body, and has an external thread at an end portion thereof connected to a speed reducer (not shown), and the housing 10 is connected to the speed reducer through the external thread thereof so as to communicate with the inside of the speed reducer.
The gasket 20 may be a known gas gasket, which is disposed at one end of the housing 10 close to the speed reducer and can move in the housing 10 under the pressure inside the speed reducer, and a gap is formed between the gasket 20 and the inner wall of the housing 10 to allow the gasket 20 to move in the housing 10 in the left-right direction.
The vent cap 50 is a cylinder with one end closed and the other end open, and is fixedly connected to the free end of the housing 10 by interference fit, and the end of the open end is located outside the vent hole 40.
The end, far away from the end connected with the speed reducer, of the shell 10 is provided with a vent hole 40, the vent hole 40 is an arc-shaped hole arranged along the circumferential direction of the shell 10, and the length and the width of the vent hole are determined according to design requirements. When the gasket 20 moves inside the vent hole 40 of the case 10 by the internal gas pressure of the decelerator, the vent hole communicates the inside of the decelerator body with the external atmosphere through the case 10.
The spring 30 is a compression spring, is disposed between the gasket 20 and the vent cap 50, and is always in a compressed state when being subjected to the internal gas pressure of the speed reducer, and restores the gasket 20 by an elastic force after the internal gas pressure of the speed reducer is released.
When the ventilating device for the speed reducer is assembled, the sealing gasket 20 and the spring 30 are sequentially arranged in the shell 10, then the ventilating cap 50 is sleeved and fixed at the end part of the shell 10, and finally the whole shell 10 is screwed into the speed reducer body through the threads at the end part.
The working principle of the invention is as follows:
when the internal pressure of the decelerator is greater than the external pressure, the internal pressure of the decelerator pushes the packing 20 to move inward, so that the spring 30 is compressed, and when the packing 20 moves to the inside of the vent hole 40 of the case 10, the inside of the case is communicated with the external atmosphere, so that the internal pressure of the decelerator is removed.
While the invention has been described with reference to the above embodiments, the scope of the invention is not limited thereto, and the above components may be replaced with similar or equivalent elements known to those skilled in the art without departing from the spirit of the invention.
Claims (5)
1. The ventilation device for the speed reducer is characterized by comprising a shell (10) communicated with the inside of the speed reducer, a movable sealing gasket (20) is arranged at one end, close to the speed reducer, of the shell (10), a ventilation cap (50) is arranged at the other end of the shell (10), a spring (30) is arranged between the sealing gasket (20) and the ventilation cap (50), an inner ventilation hole (40) and an outer ventilation hole (40) which are communicated are arranged at one end, close to the ventilation cap (50), of the shell (10), so that when the internal pressure of the speed reducer is higher than the external pressure, the pressure inside the speed reducer pushes the sealing gasket (20) to move inwards, the spring (30) is compressed, and when the sealing gasket (20) moves to the inner side of the ventilation hole (40) of the shell, the inside of the shell (10) is communicated with the outside.
2. The venting device for decelerator according to claim 1, wherein the venting cap (50) is a cylinder closed at one end and open at the other end, and is fixed to the free end of the housing (10).
3. Breather device for a retarder according to claim 1, characterised in that the housing (10) is a cylinder, which is connected to the retarder by means of an external thread provided at one end.
4. The breather device for a speed reducer according to claim 3, wherein the breather hole (40) is an arc-shaped hole provided in a circumferential direction of the housing (10).
5. The breather device for a decelerator according to claim 1, wherein the packing (20) has a gap between the inner wall of the housing (10) to allow the packing (20) to move within the housing (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011483432.4A CN112460237A (en) | 2020-12-16 | 2020-12-16 | Ventilation device for speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011483432.4A CN112460237A (en) | 2020-12-16 | 2020-12-16 | Ventilation device for speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112460237A true CN112460237A (en) | 2021-03-09 |
Family
ID=74804329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011483432.4A Pending CN112460237A (en) | 2020-12-16 | 2020-12-16 | Ventilation device for speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112460237A (en) |
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2020
- 2020-12-16 CN CN202011483432.4A patent/CN112460237A/en active Pending
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |