CN108775502B - Idle self-lubricating system and method for hydraulic retarder - Google Patents
Idle self-lubricating system and method for hydraulic retarder Download PDFInfo
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- CN108775502B CN108775502B CN201810636308.3A CN201810636308A CN108775502B CN 108775502 B CN108775502 B CN 108775502B CN 201810636308 A CN201810636308 A CN 201810636308A CN 108775502 B CN108775502 B CN 108775502B
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- oil
- way valve
- guide rod
- assembly
- hole
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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
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
- F16N7/40—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems in a closed circulation system
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
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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
- F16N—LUBRICATING
- F16N23/00—Special adaptations of check valves
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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
- F16N—LUBRICATING
- F16N2210/00—Applications
- F16N2210/14—Bearings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
- Braking Arrangements (AREA)
Abstract
The invention provides an idling self-lubricating system and method of a hydrodynamic retarder, comprising a working cavity formed by a shell assembly and a cover assembly, a stator assembly and a rotor assembly which are mutually matched and arranged in the working cavity, and a heat exchanger assembly, an oil pool, an oil inlet duct and a one-way valve which are arranged on the shell assembly; one end of the working cavity is respectively communicated with one end of the oil pool and one end of the heat exchanger assembly, and the other end of the working cavity is connected with the other end of the heat exchanger assembly through the one-way valve by the oil inlet channel; the guide rod inside the one-way valve is provided with a through hole communicated with the oil inlet end of the one-way valve, and the through hole is connected with the oil pool through a pipeline arranged on the shell assembly; when the check valve is opened, the guide rod moves, the outer wall of the guide rod blocks the pipeline, and when the check valve is closed, the guide rod is static, and the through hole is communicated with the pipeline. The problems that the oil seal and the bearing are lack of oil lubrication, rapid abrasion occurs, and the service life is shortened when the hydraulic retarder is not in operation are solved.
Description
Technical Field
The invention belongs to the field of retarders, and relates to an idling self-lubricating system and method of a hydraulic retarder.
Background
The hydraulic retarder is an important auxiliary braking device of the whole vehicle, and is promoted by national laws and regulations, and is widely popularized by companies and vast host factories, so that more and more users receive active contact from the passive, and the sales of the hydraulic retarder also spans in a leap way. Heavy trucks and passenger cars under 11 meters have also emerged as an important component of commercial vehicles with the potential for the need for hydrodynamic retarders.
When the hydraulic retarder is not operated, particularly in the vehicle condition of high rotating speed and long-time non-operation, the hydraulic retarder can ensure that an oil seal and a bearing are continuously lubricated by oil, and is also a key factor for judging whether the product is qualified or not. The problems of idle lubrication of the hydrodynamic retarder are generally solved by two methods at present.
1. The retarder is internally provided with a specific idle lubrication oil way. The internal oil duct of the hydraulic retarder can become more complex, and meanwhile, the volume of the hydraulic retarder can be increased, so that the yield of products can be greatly reduced, the internal oil duct can not be manufactured and machined at all, and even the internal oil duct cannot be matched with part of vehicle types due to the increase of the volume.
2. The idling lubrication is performed by a control program of the controller. The method has the advantages that the mechanical structure of the retarder is not required to be changed, the method is simple and easy to realize, but has the defects of higher sensitivity and higher standard for consistency of the control valve in the realization process, and meanwhile, a large amount of road test data aiming at a plurality of configuration vehicle types is required in the early stage, so that the lubrication can be realized through a program to obtain a good effect, otherwise, the idle lubrication cannot be realized, and therefore, the idle lubrication forms a series of problems such as whole vehicle braking and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an idling self-lubricating system and an idling self-lubricating method for a hydrodynamic retarder, which solve the problems that when the hydrodynamic retarder does not work, an oil seal and a bearing are rapidly worn out due to lack of oil lubrication, so that the service life is reduced.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
the idle self-lubricating system of the hydraulic retarder comprises a working cavity formed by a shell assembly and a cover assembly, a stator assembly and a rotor assembly which are arranged in the working cavity and are matched with each other, and a heat exchanger assembly, an oil pool, an oil inlet duct and a one-way valve which are arranged on the shell assembly;
one end of the working cavity is respectively communicated with one end of the oil pool and one end of the heat exchanger assembly, and the other end of the working cavity is connected with the other end of the heat exchanger assembly through the one-way valve by the oil inlet channel;
the guide rod inside the one-way valve is provided with a through hole communicated with the oil inlet end of the one-way valve, and the through hole is connected with the oil pool through a pipeline arranged on the shell assembly;
when the check valve is opened, the guide rod moves, the outer wall of the guide rod blocks the pipeline, and when the check valve is closed, the guide rod is static, and the through hole is communicated with the pipeline.
Preferably, when the hydraulic retarder works, the one-way valve is opened, and one end of the working cavity is communicated with the other end of the working cavity through the heat exchanger assembly, the valve of the one-way valve and the oil inlet channel in sequence to form a cooling circulation loop.
Preferably, when the hydraulic retarder idles, one end of the working cavity is communicated with the other end of the working cavity through the heat exchanger assembly, the through hole of the one-way valve and the oil pool in sequence to form a cooling circulation loop.
Preferably, the outside of the guide rod is sleeved with a return spring, and a counter bore is arranged on the valve body of the one-way valve corresponding to the guide rod along the compression direction of the spring.
Further, when the hydraulic retarder works, the one-way valve is opened, the guide rod is displaced to the limit, the head of the guide rod is inserted into the counter bore to be matched, and the pipeline is blocked; when the hydraulic retarder idles, the one-way valve is closed, the guide rod is static and separated from the counter bore, and the through hole is communicated with the pipeline.
Preferably, the through hole is arranged to penetrate axially along the guide rod.
Preferably, the diameter of the through hole is 6mm-6.5mm.
When the hydraulic retarder idles, the rotor assembly rotates at a high speed to stir air in the working cavity, negative pressure is formed in the working cavity, the negative pressure drives oil in the oil pool to enter an oil seal and a bearing for lubrication, part of the oil enters a one-way valve after entering a heat exchanger assembly for cooling, the guide rod does not displace, the oil enters a pipeline through a through hole, and the oil flows into the oil pool from the pipeline to form a circulation loop.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the guide rod in the check valve is provided with the through hole, when the check valve is closed, the through hole is connected with the oil pool through the pipeline, the oil pool is sequentially connected with the working cavity, the heat exchanger assembly and the check valve, the check valve is connected with the working cavity through the oil inlet channel, when the hydraulic retarder idles, the negative pressure is smaller, and the oil can not push the guide rod to enter the oil inlet channel for circulation, so that the oil flows into the oil pool through the through hole and the pipeline, a circulation loop is formed, the power is enough to form the oil to lubricate the oil seal and the bearing continuously, the working life of the retarder is prolonged, and the reliability of the retarder is increased.
Further, through set up the counter bore on the check valve body of guide bar along the spring compression direction, when hydraulic retarber during operation, high pressure oil liquid enters into the check valve, when compressing the guide bar to compression extreme position, guide bar and counter bore are in the cooperation state, and the junction of counter bore and pipeline is blocked by the shutoff, makes high pressure fluid can not flow into in the oil bath through the pipeline, has guaranteed hydraulic retarber during operation, and whole endless leakproofness can not influence hydraulic retarber's normal work.
Further, the diameter of the through hole is set to be 6mm-6.5mm, so that the situation that the through hole cannot push the guide rod when the hydraulic retarder works due to overlarge oil liquid is guaranteed, and the situation that the oil liquid passes through the through hole to form backlog due to overlarge oil liquid is avoided when the retarder idles due to overlarge oil liquid.
Drawings
Fig. 1 is a cross-sectional view of a hydrodynamic retarder according to the invention.
Fig. 2 is a partial left side view of the present invention.
Fig. 3 is an enlarged view of a portion of the check valve of the present invention.
Wherein: 1-a housing assembly; 2-stator assembly; 3-rotor assembly; 4-a cap assembly; a 5-heat exchanger; 6-an oil pool; 7-an oil inlet duct; 8-a one-way valve; 9-a guide rod; 10-through holes; 11-counter bore; 12-pipeline.
Detailed Description
The invention is described in further detail below with reference to the attached drawing figures:
as shown in fig. 1, the idling lubrication system of the hydrodynamic retarder mainly comprises a shell assembly 1, a stator assembly 2, a rotor assembly 3, a cover assembly 4, a heat exchanger assembly 5, an oil pool 6, an oil inlet channel 7 and a one-way valve 8. The oil pool 6 is sequentially communicated with the working cavity, the heat exchanger assembly 5 and the one-way valve 8, and the one-way valve 8 is connected with the working cavity through the oil inlet duct 7 to form a circulation loop in working; the housing assembly 1 and the cover assembly 4 form a working chamber, and space is provided for the rotor to work; the rotor assembly 3 is connected with an output shaft of the gearbox through a spline and rotates along with the output shaft; the heat exchanger assembly 5 dissipates heat of the working oil; the oil pool 6 stores working oil; the oil inlet duct 7 provides a passage for oil passing through the one-way valve 8 to enter between the stator and the rotor.
As shown in fig. 3, a through hole 10 communicated with the oil inlet end of the check valve 8 is arranged on the guide rod 9 inside the check valve 8, the through hole 10 is arranged in a penetrating manner along the axial direction of the guide rod 9, the diameter of the through hole 10 is 6mm-6.5mm, meanwhile, the through hole 10 is connected with the oil sump 6 through a pipeline 12 arranged on the shell assembly 1, a spring is sleeved on the circumferential surface of the guide rod 9, and a counter bore 11 is further arranged on the valve body of the check valve 8 corresponding to the guide rod 9 along the compression direction of the spring; when the hydraulic retarder works, high-pressure oil enters the one-way valve 8, the one-way valve 8 is opened when the guide rod 9 is pressurized and displaced to a compression limit, and the guide rod 9 is in plug-in fit with the counter bore 11, so that the head of the guide rod 9 is contacted with the bottom of the counter bore 11, the high-pressure oil cannot flow into the oil tank 6 through the through hole 10 and the pipeline 12, the tightness of the whole cycle is ensured when the hydraulic retarder works, and the normal work of the hydraulic retarder cannot be influenced. When the hydrodynamic retarder idles, the guide rod 9 is static and does not displace, the through hole 10 is communicated with the pipeline 12, and oil can directly enter the oil pool 6 through the through hole 10.
When the hydraulic retarder works, oil liquid after working from the working cavity is cooled by the heat exchanger and enters the one-way valve 8, at the moment, the oil pressure is high, the oil liquid pushes the guide rod 9, the guide rod 9 is displaced along the compression direction of the spring, one end of the guide rod 9 enters the counter bore 11, the guide rod 9 is matched with the counter bore 11 when being displaced to the limit, the head of the guide rod is used for sealing the pipeline 12, high-pressure oil liquid enters a space formed by the guide rod 9 and the inner wall of the one-way valve 8, as shown in fig. 2, the oil liquid directly enters the oil inlet channel 7 connected with the inner wall, and then enters the stator and the rotor again to generate braking force to form circulation.
According to the idling self-lubricating method of the hydraulic retarder, when the hydraulic retarder idles, the rotor assembly 3 rotates at a high speed to stir air in the working cavity, negative pressure is formed in the working cavity, the negative pressure drives oil in the oil tank 6 to enter an oil seal and a bearing for lubrication through respective corresponding oil inlet channels, part of the oil enters the heat exchanger assembly 5 for cooling and then enters the one-way valve 8, and because the pressure of the oil is smaller, the guide rod 9 cannot be pushed, so that the guide rod 9 does not displace, the oil enters the pipeline 12 through the through hole 10, flows into the oil tank 6 from the pipeline 12, and the negative pressure becomes single oil absorption from the oil tank; therefore, oil is continuously generated in the idle lubrication system to lubricate the oil seal and the bearing, the service life of the idle lubrication system is prolonged, and the reliability of the retarder is improved.
The above is only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (8)
1. The idling self-lubricating system of the hydrodynamic retarder is characterized by comprising a working cavity formed by a shell assembly (1) and a cover assembly (4), a stator assembly (2) and a rotor assembly (3) which are arranged in the working cavity and are matched with each other, and a heat exchanger assembly (5), an oil tank (6), an oil inlet channel (7) and a one-way valve (8) which are arranged on the shell assembly (1);
the oil pool (6) is sequentially communicated with the working cavity, the heat exchanger assembly (5) and the one-way valve (8), and the one-way valve (8) is connected with the working cavity through the oil inlet duct (7);
the guide rod (9) in the one-way valve (8) is provided with a through hole (10) communicated with the oil inlet end of the one-way valve (8), and the through hole (10) is connected with the oil pool (6) through a pipeline (12) arranged on the shell assembly (1);
when the one-way valve (8) is opened, the guide rod (9) moves, the outer wall of the guide rod (9) blocks the pipeline (12), and when the one-way valve (8) is closed, the guide rod (9) is static, and the through hole (10) is communicated with the pipeline (12).
2. The idling self-lubricating system of the hydraulic retarder according to claim 1, wherein when the hydraulic retarder works, the one-way valve (8) is opened, and one end of the working cavity is communicated with the other end of the working cavity sequentially through the heat exchanger assembly (5), the valve of the one-way valve (8) and the oil inlet channel (7) to form a cooling circulation loop.
3. The idling self-lubricating system of the hydraulic retarder according to claim 1, wherein when the hydraulic retarder is idling, one end of the working chamber is communicated with the other end of the working chamber sequentially through the heat exchanger assembly (5), the through hole of the one-way valve (8) and the oil pool (6) to form a cooling circulation loop.
4. The idling self-lubricating system of the hydrodynamic retarder according to claim 1, wherein the guide rod (9) is externally sleeved with a return spring, and a counter bore (11) is arranged on the valve body of the one-way valve (8) corresponding to the guide rod (9) along the compression direction of the spring.
5. An idling self-lubricating system of a hydrodynamic retarder according to claim 4, characterized in that when the hydrodynamic retarder is in operation, the non-return valve (8) is opened, the pilot rod (9) is displaced to a limit, the head of the pilot rod (9) is inserted into the counter bore (11) to cooperate, the pipe (12) is blocked; when the hydrodynamic retarder idles, the one-way valve (8) is closed, the guide rod (9) is static and separated from the counter bore (11), and the through hole (10) is communicated with the pipeline (12).
6. A hydrodynamic retarder idle self-lubrication system according to claim 1, characterized in that the through hole (10) is arranged axially through the guiding rod (9).
7. A hydrodynamic retarder idle self-lubrication system according to claim 1, characterized in that the through hole (10) has a diameter of 6mm-6.5mm.
8. The idling self-lubricating method of the hydraulic retarder based on the system of claim 1 is characterized in that when the hydraulic retarder idles, the rotor assembly (3) rotates at a high speed to stir air in the working cavity, negative pressure is formed in the working cavity, the negative pressure drives oil in the oil pool (6), oil enters an oil seal and a bearing to lubricate, part of the oil enters the heat exchanger assembly (5) to be cooled, then enters the check valve (8), the guide rod (9) does not displace, the oil enters the pipeline (12) through the through hole (10), and a circulation loop is formed by flowing the oil from the pipeline (12) into the oil pool (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810636308.3A CN108775502B (en) | 2018-06-20 | 2018-06-20 | Idle self-lubricating system and method for hydraulic retarder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810636308.3A CN108775502B (en) | 2018-06-20 | 2018-06-20 | Idle self-lubricating system and method for hydraulic retarder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108775502A CN108775502A (en) | 2018-11-09 |
| CN108775502B true CN108775502B (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810636308.3A Active CN108775502B (en) | 2018-06-20 | 2018-06-20 | Idle self-lubricating system and method for hydraulic retarder |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848291A (en) * | 2019-12-10 | 2020-02-28 | 长春中誉集团有限公司 | Front housing for hydraulic retarder |
| CN111594603B (en) * | 2020-06-12 | 2024-12-13 | 中车戚墅堰机车车辆工艺研究所股份有限公司 | Axial limiting structure and gear box |
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| CN108775502A (en) | 2018-11-09 |
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