CN112747107B - Pressure pumping structure and pressure pumping method for speed reducer - Google Patents
Pressure pumping structure and pressure pumping method for speed reducer Download PDFInfo
- Publication number
- CN112747107B CN112747107B CN202011594879.9A CN202011594879A CN112747107B CN 112747107 B CN112747107 B CN 112747107B CN 202011594879 A CN202011594879 A CN 202011594879A CN 112747107 B CN112747107 B CN 112747107B
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- speed reducer
- connecting device
- shell
- vacuum
- air inlet
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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
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention provides a pressure pumping structure for a speed reducer, which comprises: the vacuum pumping pump is used for pumping pressure to the speed reducer; the connecting device is detachably connected with the speed reducer and the vacuum pumping pump, and is provided with an air inlet which can be opened and closed, wherein the air inlet can be communicated with an inner cavity of the speed reducer and the vacuum pumping pump and is used for enabling air in the inner cavity of the speed reducer to be discharged outwards through the air inlet and the vacuum pumping pump after the vacuum pumping pump is started. The invention realizes the work of the vacuum pump on the speed reducer through the connecting device, so that the internal pressure of the speed reducer is always smaller than the external pressure, the oil leakage of the speed reducer caused by pressure is prevented, and the stable pressure in the speed reducer can be ensured after the vacuum pump stops working. In addition, this take out and press structure not receive the position restriction, can all go on in any position of speed reducer, only need bore the screw hole promptly at the relevant position of speed reducer, can be through assembling speed reducer and evacuation pump together convenient to use fast.
Description
Technical Field
The invention relates to the field of speed reducers, in particular to a pressure pumping structure and a pressure pumping method for a speed reducer.
Background
The speed reducer is a device which is widely applied in industry, and is often used as a speed reduction transmission device between a prime mover and a working machine to play a role in matching rotating speed and transmitting torque.
The reduction gear is sealed through skeleton seal and sealed glue mostly, uses at the reduction gear for a long time, and the reduction gear inner chamber leads to pressure to rise because of the temperature rise, and because keep the friction state for a long time between skeleton seal and the axle, in case skeleton seal damages, sealed problem to reach the easy oil seepage that takes place, not only can cause economic loss, more can arouse the trouble when the oil leak is serious, leads to the emergence of equipment accident.
Disclosure of Invention
The invention aims to provide a pressure pumping structure and a pressure pumping method for a speed reducer, which are convenient to use and can prevent the speed reducer from oil leakage caused by pressure.
In order to solve the technical problems, the invention adopts the following technical scheme:
a pumping structure for a speed reducer, comprising:
the vacuum pumping pump is used for pumping pressure to the speed reducer;
the connecting device is detachably connected with the speed reducer and the vacuum pumping pump, and is provided with an air inlet which can be opened and closed, wherein the air inlet can be communicated with an inner cavity of the speed reducer and the vacuum pumping pump and is used for enabling air in the inner cavity of the speed reducer to be discharged outwards through the air inlet and the vacuum pumping pump after the vacuum pumping pump is started.
Preferably, the connecting device comprises a core bar and a shell, the shell is of a cylindrical structure, an air inlet is formed in the lower portion of the shell, the core bar is arranged in an inner cavity of the shell, a sealing portion used for sealing the air inlet of the shell is arranged at the bottom of the shell, and when the connecting device is connected between the vacuum pump and the speed reducer, the sealing portion is located above the air inlet.
Preferably, the core bar includes a main body portion, the main body portion is in a rod shape, an axis of the main body portion extends along an axial direction of the housing, the connecting device further includes an internal stopper, the internal stopper is disposed in an inner cavity of the housing, the internal stopper is provided with a vent hole for air circulation and an axial hole for the core bar to penetrate through, a compression spring is disposed between the internal stopper and the sealing portion, and the compression spring is sleeved on an outer periphery of the main body portion.
Preferably, the connecting device further comprises a limiting structure for limiting the core rod.
Preferably, the shell is provided with a plurality of lifting grooves and a clamping groove communicated with the lifting grooves, the clamping groove is located on the outer side of the lifting grooves, the core bar further comprises a plurality of limiting parts connected with the main body part, and the limiting parts are plate-shaped, extend in the horizontal direction and can move up and down in the lifting grooves.
Preferably, the main body extends upwards, and part of the main body protrudes out of the limiting part.
The invention also provides a pressure extraction method for the speed reducer, which comprises the following steps:
s1: exposing the air inlet of the connecting device, and communicating the inner cavity of the speed reducer with the vacuum pump through the connecting device;
s2: starting a vacuum pumping pump to enable gas in the inner cavity of the speed reducer to be discharged outwards through the connecting device and the vacuum pumping pump;
s3: and after the pressure of the inner cavity of the speed reducer reaches a desired value, the connecting device is disassembled from the vacuum pump, and the air inlet of the connecting device is sealed.
Preferably, in S1, the core bar is lifted by an external force, so that the core bar moves to the joint of the lifting groove and the clamping groove, and then the core bar is rotated, so that the core bar moves from the lifting groove to the clamping groove and is limited by the clamping groove, so as to expose the air inlet of the housing; the external thread of the shell of the connecting device is respectively connected with the speed reducer and the vacuum pump.
Preferably, in S3, after the pressure in the inner cavity of the speed reducer reaches a desired value, the connecting device is detached from the vacuum pump, and the core rod is rotated in the reverse direction to move the core rod from the clamping groove to the lifting groove. Because the spring is in a compression state at the moment, the spring enables the core rod to reset downwards through the elastic deformation of the spring, so that the air inlet of the shell is sealed.
According to the technical scheme, the invention has at least the following advantages and positive effects:
the invention realizes the work of the vacuum pump on the speed reducer through the connecting device, so that the internal pressure of the speed reducer is always smaller than the external pressure, the oil leakage of the speed reducer caused by pressure is prevented, and the stable pressure in the speed reducer can be ensured after the vacuum pump stops working. In addition, this take out and press structure not receive the position restriction, can all go on in any position of speed reducer, only need bore the screw hole promptly at the relevant position of speed reducer, can be through assembling speed reducer and evacuation pump together convenient to use fast.
Drawings
Fig. 1 is a schematic structural diagram of a pumping structure for a speed reducer according to the present invention.
Fig. 2 is a schematic structural view of the pumping structure for a speed reducer according to the present invention in a use state.
The reference numerals are explained below:
1. a core bar; 11. a sealing part; 12. a main body portion; 13. a limiting part; 2. a housing; 21. a lifting groove; 22. a card slot; 3. an internal stop; 4. a speed reducer;
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below in the specification. It is to be understood that the invention is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the invention and the description and drawings are to be regarded as illustrative in nature and not as restrictive.
Referring to fig. 1 and 2, the present invention provides a pressure reduction structure for a speed reducer, including a vacuum pump (not shown) and a connection device, where the vacuum pump is communicated with an inner cavity of the speed reducer 4 through the connection device, so that after the vacuum pump is started, gas in the inner cavity of the speed reducer 4 is discharged outwards through the connection device and the vacuum pump in sequence, so as to reduce the air pressure in the inner cavity of the speed reducer 4. Because the external pressure is greater than the internal pressure of the speed reducer 4, after the speed reducer 4 works, even if the internal pressure is increased due to temperature rise, the internal pressure of the speed reducer 4 is always smaller than the external pressure, and the phenomenon that the oil leakage of the speed reducer 4 is caused due to pressure is prevented.
The connection device in this embodiment comprises a core rod 1, a housing 2 and an internal stop 3.
The shell 2 is roughly of a cylindrical structure and is provided with an air channel used for communicating the vacuumizing pump with the speed reducer 4, an upper external thread and a lower external thread are formed on the outer peripheral wall of the shell 2, and the shell 2 is connected with the speed reducer 4 and the vacuumizing pump through the upper external thread and the lower external thread respectively, so that the shell 2 and the vacuumizing pump can be quickly assembled and disassembled.
Both ends opening about casing 2, the air inlet is established to the lower extreme promptly, and the operation mouth is established to the upper end, air inlet and operation mouth all with the inner chamber intercommunication of casing 2.
The shell 2 is also provided with a plurality of lifting grooves 21 and clamping grooves 22 corresponding to the lifting grooves 21; the lifting groove 21 penetrates through the peripheral wall of the shell 2 and is located above the upper external thread, and the clamping groove 22 is communicated with the lifting groove 21 and is located on the outer side of the lifting groove 21.
The internal stopper 3 is fixedly installed in the inner cavity of the housing 2 with a predetermined distance between the bottom wall thereof and the bottom wall of the housing 2. The inner block 3 is provided with a vent hole along the axial direction of the shell 2 in a penetrating way, so that the gas at the lower part of the inner cavity of the shell 2 can be diffused outwards after passing through the inner block 3. The middle part of the inner stop block 3 is also provided with a shaft hole in a penetrating way.
The core bar 1 is of a multi-section structure and comprises a sealing part 11, a main body part 12 and a plurality of limiting parts 13 which are sequentially connected from bottom to top, wherein the sealing part 11 is of a disc-shaped structure and is positioned below the internal stop 3 and used for sealing an air inlet of the shell 2; the main body part 12 is rod-shaped and is arranged in a shaft hole of the internal block 3 in a penetrating way, a compression spring is sleeved on the periphery of the main body part 12, and the compression spring is positioned between the sealing part 11 and the internal block 3; the limiting portion 13 is of a plate-shaped structure, extends in the horizontal direction and corresponds to the lifting grooves 21 one by one, and in a natural state, the limiting portion 13 penetrates through the lifting grooves 21, so that the limiting portion can move up and down in the vertical direction. In order to lift the core bar 1 conveniently, the main body part 12 is partially positioned above the limiting part 13, and an operator can lift the main body part 12 protruding out of the limiting part 13 through the operation opening, so that the core bar 1 rises along the lifting groove 21.
In this embodiment, before the evacuation pump is communicated with the inner cavity of the speed reducer 4 through the connection device, the core rod 1 may be lifted by an external force, so that the core rod 1 moves to the butt joint of the lifting groove 21 and the clamping groove 22, and then the core rod 1 is rotated, so that the core rod 1 moves from the lifting groove 21 to the clamping groove 22 and is limited by the clamping groove 22, so as to expose the air inlet of the casing 2, and then the inner cavity of the speed reducer 4 is communicated with the evacuation pump through a threaded connection. After the vacuum pump is started, gas in the inner cavity of the speed reducer 4 is exhausted outwards through the connecting device and the vacuum pump, so that the internal pressure of the speed reducer 4 is reduced. After the pressure in the inner cavity of the speed reducer 4 reaches a desired value, the connecting device is disassembled from the vacuum pump, and the core rod 1 is rotated reversely, so that the core rod 1 moves from the clamping groove 22 to the lifting groove 21. Since the spring is in a compressed state, the spring returns the core rod 1 downward by its elastic deformation to seal the air inlet of the housing 2.
The invention realizes the work of the vacuum pump on the speed reducer 4 through the connecting device, so that the internal pressure of the speed reducer 4 is always smaller than the external pressure, the oil leakage of the speed reducer 4 caused by pressure is prevented, and the stable pressure in the speed reducer 4 can be ensured after the vacuum pump stops working. In addition, this take out and press structure not receive the position restriction, can all go on in the any position of speed reducer 4, only need bore the screw hole promptly in the relevant position of speed reducer 4, can be through assembling speed reducer 4 and evacuation pump together convenient to use fast.
While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (5)
1. A take out and press structure for speed reducer, its characterized in that includes:
the vacuum pumping pump is used for pumping pressure to the speed reducer;
the connecting device is detachably connected with the speed reducer and the vacuum-pumping pump, is provided with an air inlet which can be opened and closed, can be communicated with an inner cavity of the speed reducer and the vacuum-pumping pump, and is used for enabling air in the inner cavity of the speed reducer to be discharged outwards through the air inlet and the vacuum-pumping pump in sequence after the vacuum-pumping pump is started;
the connecting device comprises a core rod and a shell, the shell is of a cylindrical structure, an air inlet is formed in the lower portion of the shell, the core rod is arranged in an inner cavity of the shell, a sealing portion used for sealing the air inlet of the shell is arranged at the bottom of the core rod, and when the connecting device is connected between the vacuum pumping pump and the speed reducer, the sealing portion is located above the air inlet;
the connecting device comprises a shell, a core rod and a connecting device, wherein the core rod comprises a main body part which is in a rod shape, the axis of the main body part extends along the axial direction of the shell, the connecting device also comprises an internal stop block, the internal stop block is arranged in the inner cavity of the shell and is provided with a vent hole for air circulation and a shaft hole for the core rod to penetrate through, a compression spring is arranged between the internal stop block and the sealing part, and the compression spring is sleeved on the periphery of the main body part;
the connecting device also comprises a limiting structure for limiting the core rod;
the core bar comprises a shell, a plurality of lifting grooves and a clamping groove, wherein the shell is provided with the plurality of lifting grooves, the clamping groove is communicated with the lifting grooves, the clamping groove is positioned on the outer side of the lifting grooves, the core bar further comprises a plurality of limiting parts connected with the main body part, the limiting parts are plate-shaped, extend along the horizontal direction and can perform lifting motion in the lifting grooves.
2. The pumping structure for a speed reducer according to claim 1, wherein the main body extends upward and partially protrudes from the limiting portion.
3. A pumping method for a reducer, characterized in that a connecting device according to any one of claims 1-2 is used, the method comprising the steps of:
s1: exposing the air inlet of the connecting device, and communicating the inner cavity of the speed reducer with the vacuum pump through the connecting device;
s2: starting a vacuum pumping pump to enable gas in the inner cavity of the speed reducer to be discharged outwards through the connecting device and the vacuum pumping pump;
s3: and after the pressure of the inner cavity of the speed reducer reaches a desired value, the connecting device is disassembled from the vacuum pump, and the air inlet of the connecting device is sealed.
4. The decompression method for the speed reducer according to claim 3, wherein in S1, the core bar is lifted by an external force to move to the butt joint of the lifting groove and the clamping groove, and then the core bar is rotated to move from the lifting groove to the clamping groove and is limited by the clamping groove to expose the air inlet of the shell; the external thread of the shell of the connecting device is respectively connected with the speed reducer and the vacuum pump.
5. The pressure extraction method for the speed reducer according to claim 4, wherein in S3, after the pressure in the inner cavity of the speed reducer reaches a desired value, the connecting device is detached from the vacuum extraction pump, and the core rod is rotated in the reverse direction to move the core rod from the clamping groove to the lifting groove; because the spring is in a compression state at the moment, the spring enables the core rod to reset downwards through the elastic deformation of the spring, so that the air inlet of the shell is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011594879.9A CN112747107B (en) | 2020-12-28 | 2020-12-28 | Pressure pumping structure and pressure pumping method for speed reducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011594879.9A CN112747107B (en) | 2020-12-28 | 2020-12-28 | Pressure pumping structure and pressure pumping method for speed reducer |
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| Publication Number | Publication Date |
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| CN112747107A CN112747107A (en) | 2021-05-04 |
| CN112747107B true CN112747107B (en) | 2022-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011594879.9A Active CN112747107B (en) | 2020-12-28 | 2020-12-28 | Pressure pumping structure and pressure pumping method for speed reducer |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| BE586633A (en) * | 1959-12-14 | 1960-05-03 | ||
| DE10303419A1 (en) * | 2003-01-29 | 2004-08-26 | Voith Turbo Gmbh & Co. Kg | Structure unit e.g. transmission, has flow-path connected between gap part and low pressure area in casing and guided through shaft flange to rotate with shaft which passes through termination part of flow path |
| CN103277495A (en) * | 2013-06-17 | 2013-09-04 | 太重（天津）滨海重型机械有限公司 | Low-pressure anti-seepage device of gearbox |
| CN206054724U (en) * | 2016-08-31 | 2017-03-29 | 河南蒲瑞精密机械有限公司 | A kind of negative pressure sealing device for housing of confined space |
| CN106856655A (en) * | 2017-01-07 | 2017-06-16 | 深圳市路远智能装备有限公司 | A kind of intelligent paste machine suction nozzle rod vacuum seal structure |
| CN108426084A (en) * | 2018-05-18 | 2018-08-21 | 南通东方船用设备制造有限公司 | Single-acting air spring pressure balance type actuator |
| CN208764135U (en) * | 2017-12-12 | 2019-04-19 | 西安汉仁精密机械有限公司 | A kind of bar air bearing support and sealing structure |
| CN109869511A (en) * | 2019-03-25 | 2019-06-11 | 浙江德宏汽车电子电器股份有限公司 | A kind of vacuum pump exhaust tube structure |
| CN210461685U (en) * | 2019-08-26 | 2020-05-05 | 苏州佳伟通环保科技有限公司 | Exhaust-gas treatment equipment that sealing performance is good |
| CN210978517U (en) * | 2019-12-02 | 2020-07-10 | 合肥蜀泰精密机械设备有限公司 | CF ultrahigh vacuum sealing device |
| CN111425615A (en) * | 2020-03-17 | 2020-07-17 | 常州捷佳创精密机械有限公司 | Valve assembly and vacuum pumping device |
| CN111473103A (en) * | 2020-04-28 | 2020-07-31 | 东莞利得机电有限公司 | Speed reducer assembling method and speed reducer assembling device |
| CN111765275A (en) * | 2020-06-22 | 2020-10-13 | 浙江凯立特真空科技有限公司 | Gas ballast valve for vacuum pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DD103154A5 (en) * | 1973-03-05 | 1974-01-12 |
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2020
- 2020-12-28 CN CN202011594879.9A patent/CN112747107B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| BE586633A (en) * | 1959-12-14 | 1960-05-03 | ||
| DE10303419A1 (en) * | 2003-01-29 | 2004-08-26 | Voith Turbo Gmbh & Co. Kg | Structure unit e.g. transmission, has flow-path connected between gap part and low pressure area in casing and guided through shaft flange to rotate with shaft which passes through termination part of flow path |
| CN103277495A (en) * | 2013-06-17 | 2013-09-04 | 太重（天津）滨海重型机械有限公司 | Low-pressure anti-seepage device of gearbox |
| CN206054724U (en) * | 2016-08-31 | 2017-03-29 | 河南蒲瑞精密机械有限公司 | A kind of negative pressure sealing device for housing of confined space |
| CN106856655A (en) * | 2017-01-07 | 2017-06-16 | 深圳市路远智能装备有限公司 | A kind of intelligent paste machine suction nozzle rod vacuum seal structure |
| CN208764135U (en) * | 2017-12-12 | 2019-04-19 | 西安汉仁精密机械有限公司 | A kind of bar air bearing support and sealing structure |
| CN108426084A (en) * | 2018-05-18 | 2018-08-21 | 南通东方船用设备制造有限公司 | Single-acting air spring pressure balance type actuator |
| CN109869511A (en) * | 2019-03-25 | 2019-06-11 | 浙江德宏汽车电子电器股份有限公司 | A kind of vacuum pump exhaust tube structure |
| CN210461685U (en) * | 2019-08-26 | 2020-05-05 | 苏州佳伟通环保科技有限公司 | Exhaust-gas treatment equipment that sealing performance is good |
| CN210978517U (en) * | 2019-12-02 | 2020-07-10 | 合肥蜀泰精密机械设备有限公司 | CF ultrahigh vacuum sealing device |
| CN111425615A (en) * | 2020-03-17 | 2020-07-17 | 常州捷佳创精密机械有限公司 | Valve assembly and vacuum pumping device |
| CN111473103A (en) * | 2020-04-28 | 2020-07-31 | 东莞利得机电有限公司 | Speed reducer assembling method and speed reducer assembling device |
| CN111765275A (en) * | 2020-06-22 | 2020-10-13 | 浙江凯立特真空科技有限公司 | Gas ballast valve for vacuum pump |
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|---|---|
| CN112747107A (en) | 2021-05-04 |
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