CN106015542A - Transmission oil pump capable of preventing pressure of transmission oil duct from being too high - Google Patents
Transmission oil pump capable of preventing pressure of transmission oil duct from being too high Download PDFInfo
- Publication number
- CN106015542A CN106015542A CN201610678117.4A CN201610678117A CN106015542A CN 106015542 A CN106015542 A CN 106015542A CN 201610678117 A CN201610678117 A CN 201610678117A CN 106015542 A CN106015542 A CN 106015542A
- Authority
- CN
- China
- Prior art keywords
- hole
- oil
- variator
- transmission
- valve opening
- 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
Links
Classifications
-
- 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
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0436—Pumps
-
- 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
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0441—Arrangements of pumps
Abstract
The invention provides a transmission oil pump capable of preventing the pressure of a transmission oil duct from being too high. The transmission oil pump comprises a cover plate, a pump body and a safety valve assembly installed on the pump body. The safety valve assembly comprises a screw plug, a spring and a steel ball. According to the technical scheme, due to the fact that the safety valve is arranged on the transmission oil pump, when a transmission is subjected to cold start and the oil duct pressure is too high, the over-high pressure in oil ducts can be discharged in time through the safety valve. The phenomena that the transmission is damaged and a sealing face leaks oil due to the fact that the pressure of the oil ducts is high during cold start of the transmission are reduced, and transmission reliability is improved.
Description
Technical field
The present invention relates to a kind of transmission oil pump, particularly variator itself and without relief valve but during oil duct hypertonia, unload the transmission oil pump of oil duct excess pressure the most in time when cold start-up.
Background technology
Existing transmission oil pump is typically mounted on front end cover assembly, including the pump housing, cover plate, external gear, the parts such as internal gear, transmission oil pump is driven by transmission main shaft and rotates, owing in variator, oil duct is various, the compact conformation of variator own can not arrange relief valve in every oil duct, but variator is in the environment of high and cold low temperature, transmission oil viscosity is the highest, oil pressure during significantly larger than transmission duty can be produced when transmission oil pump startup, if now each oil duct can not be reduced pressure, each sealing surface can produce the phenomenon of leakage of oil because bearing hydraulic oil, if can not get decompression for a long time, then variator can be caused critical component to damage by hydraulic oil effect, whole transmission failure is caused normally to work.
Summary of the invention
The technical problem to be solved in the present invention is to provide each oil duct of a kind of variator and does not arranges relief valve but can guarantee that the transmission oil pump that each oil duct pressure will not be too high when cold start-up.
In order to solve above-mentioned technical problem, the present invention adopts the following technical scheme that a kind of it can be avoided that the transmission oil pump of variator oil duct hypertonia, including cover plate, the pump housing and the relief valve assembly being arranged on the pump housing, described relief valve assembly includes plug screw, spring, steel ball.
In technique scheme, owing to being provided with relief valve on transmission oil pump, so when variator is in cold start-up during oil duct hypertonia, just can unload the excess pressure in oil duct in time by relief valve.Reduce variator and cause transmission failure and the phenomenon of sealing surface leakage of oil because of each oil duct pressure height during cold start-up, improve the reliability of variator.
In one embodiment, the side of the described pump housing is provided with a shoulder hole, and described shoulder hole ecto-entad is followed successively by screwed hole, valve opening, taper hole, oil-through hole, and the internal diameter of described valve opening is more than the internal diameter of oil-through hole, and described taper hole is positioned at the junction of valve opening and oil-through hole；Described steel ball and spring is arranged in described valve opening, and described plug screw is arranged in screwed hole, and described spring is between plug screw and steel ball and provides preload pressure, makes steel ball and taper hole contact internal walls cooperatively form sealing surface；Described oil-through hole connects with oil pump high pressure chest；The hole wall of described valve opening is provided with drain tap by taper hole, and described drain tap can be connected with variator oilcan.
Owing to oil-through hole is connected with transmission oil pump high pressure chest, and transmission oil pump high pressure chest is connected by the oil-out oil duct each with variator of transmission oil pump, and therefore each oil duct pressure is sufficiently close to the pressure at oil-through hole with variator.When during cold start-up, variator oil duct pressure reaches the unlatching pressure of transmission oil pump relief valve, steel ball is compression spring under the effect of hydraulic oil, the sealing surface between steel ball and taper hole is made to open, transmission oil in transmission oil pump high pressure chest can pass sequentially through the space between oil-through hole, steel ball and taper hole, relief valve drain tap is back to variator oilcan, the part transmission oil at transmission oil pump oil-out is released by relief valve, effectively reduce variator with the fuel delivery of transmission oil pump discharge under rotating speed, it is to avoid variator each oil duct hypertonia.
The further technical scheme of the present invention is: the hole wall of described valve opening is provided with damping leak by screwed hole, and described damping leak can be connected with variator oilcan.
Owing to being provided with damping leak at valve opening by screw thread nose end, so can effectively release some retention hydraulic oil in valve opening when relief valve is opened, avoid the hydraulic oil stored that steel ball compression spring is produced damping, it is ensured that to damp without any other in addition to spring force during steel ball compression spring.Substantially increase accuracy and the reliability of relief valve work, preferably ensure the normal work of relief valve.
Preferably, the hole wall of described valve opening is provided with two mutually perpendicular drain taps by taper hole.
Accompanying drawing explanation
Fig. 1 is the overall structure front view of the embodiment of the present invention；
Fig. 2 is the cross section structure schematic diagram of line A-A in Fig. 1；
Fig. 3 is the cross section structure schematic diagram of line B-B in Fig. 1；
Fig. 4 is the structural representation of the pump housing in Fig. 3 and shoulder hole.
Reference is:
1 cover plate 2 pump housing 3 plug screw
4 spring 5 steel ball 21 screwed holes
22 damping leaks
23 valve opening 24 oil leak hole
25 taper hole 26 oil-through holes
27 oil pump high pressure chests.
Detailed description of the invention
For the ease of the understanding of those skilled in the art, below in conjunction with embodiment, the present invention is further illustrated with accompanying drawing, the content that embodiment is mentioned not limitation of the invention.
In describing the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.In describing the invention, " multiple " are meant that two or more, unless otherwise expressly limited specifically.In describing the invention, it should be noted that, unless otherwise prescribed and limit, term " is installed ", " being connected ", " connection " should be interpreted broadly, such as, can be to be mechanically connected or electrical connection, can also be the connection of two element internals, can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, for the ordinary skill in the art, the concrete meaning of described term can be understood as the case may be.
As shown in Figures 1 to 3, the preferred embodiments of the present invention are: a kind of it can be avoided that the transmission oil pump of variator oil duct hypertonia, including cover plate 1, the pump housing 2 and the relief valve assembly being arranged on the pump housing 2, described relief valve assembly includes plug screw 3, spring 4, steel ball 5.
As shown in Figure 3,4, the side of the described pump housing 2 is provided with a shoulder hole, described shoulder hole ecto-entad is followed successively by screwed hole 21, valve opening 23, taper hole 25, oil-through hole 26, and the internal diameter of described valve opening 23 is more than the internal diameter of oil-through hole 26, and described taper hole 25 is positioned at the junction of valve opening 23 and oil-through hole 26；Steel ball 5 and spring 4 are arranged in described valve opening 23, and plug screw 3 is arranged in screwed hole 21, and spring 4 is between plug screw 3 and steel ball 5 and provides preload pressure, make steel ball 5 and taper hole 25 contact internal walls cooperatively form sealing surface；Described oil-through hole 26 connects with oil pump high pressure chest 27；The hole wall of described valve opening 23 is provided with two mutually perpendicular drain taps 24 by taper hole 25, and described drain tap 24 can be connected with variator oilcan.
Owing to oil-through hole 26 is connected with oil pump high pressure chest 27, and oil pump high pressure chest 27 is connected by the oil-out oil duct each with variator of transmission oil pump, and therefore each oil duct pressure is sufficiently close to the pressure at oil-through hole 26 with variator.When during cold start-up, variator oil duct pressure reaches the unlatching pressure of transmission oil pump relief valve, steel ball 5 is compression spring 4 under the effect of hydraulic oil, the sealing surface between steel ball 5 and taper hole 25 is made to open, transmission oil in oil pump high pressure chest 27 can pass sequentially through the space between oil-through hole 26, steel ball 5 and taper hole 25, drain tap 24 is back to variator oilcan, the part transmission oil at transmission oil pump oil-out is released by relief valve, effectively reduce variator with the fuel delivery of transmission oil pump discharge under rotating speed, it is to avoid variator each oil duct hypertonia.Reduce variator and cause transmission failure and the phenomenon of sealing surface leakage of oil because of each oil duct pressure height during cold start-up, improve the reliability of variator.
As shown in Figure 4, the hole wall of described valve opening 23 is by being provided with damping leak 22 at screwed hole 21, described damping leak 22 can be connected with variator oilcan.Such damping leak 22 is set and can effectively release some retention hydraulic oil in valve opening 23 when relief valve is opened, it is to avoid the hydraulic oil of delay produces damping to steel ball compression spring, it is ensured that damp without any other in addition to spring force during steel ball 5 compression spring 4.Substantially increase accuracy and the reliability of relief valve work, preferably ensure the normal work of relief valve.
Above-described embodiment is the present invention preferably implementation, and in addition, the present invention can realize with alternate manner, and on the premise of conceiving without departing from the technical program, any obvious replacement is all within protection scope of the present invention.
In order to allow those of ordinary skill in the art understand the present invention improvements relative to prior art more easily, some accompanying drawings of the present invention and description have been simplified, and for the sake of clarity, present specification is omitted some other elements, and those of ordinary skill in the art it is to be appreciated that these elements omitted also may make up present disclosure.
Claims (4)
1. one kind it can be avoided that the transmission oil pump of variator oil duct hypertonia, it is characterized in that: include cover plate (1), the pump housing (2) and the relief valve assembly being arranged on the pump housing (2), described relief valve assembly includes plug screw (3), spring (4), steel ball (5).
The most according to claim 1 it can be avoided that the transmission oil pump of variator oil duct hypertonia, it is characterized in that: the side of the described pump housing (2) is provided with a shoulder hole, described shoulder hole ecto-entad is followed successively by screwed hole (21), valve opening (23), taper hole (25), oil-through hole (26), the internal diameter of described valve opening (23) is more than the internal diameter of oil-through hole (26), and described taper hole (25) is positioned at the junction of valve opening (23) and oil-through hole (26)；Described steel ball (5) and spring (4) are arranged in described valve opening (23), described plug screw (3) is arranged in screwed hole (21), described spring (4) is positioned between plug screw (3) and steel ball (5) and provides preload pressure, makes steel ball (5) and taper hole (25) contact internal walls cooperatively form sealing surface；Described oil-through hole (26) connects with oil pump high pressure chest (27)；The hole wall of described valve opening (23) is provided with drain tap (24) by taper hole (25) place, and described drain tap (24) can be connected with variator oilcan.
The most according to claim 1 it can be avoided that the transmission oil pump of variator oil duct hypertonia, it is characterized in that: the hole wall of described valve opening (23) is provided with damping leak (22) by screwed hole (21) place, and described damping leak (22) can be connected with variator oilcan.
It is the most according to claim 1 and 2 it can be avoided that the transmission oil pump of variator oil duct hypertonia, it is characterised in that: the hole wall of described valve opening (23) is provided with two mutually perpendicular drain taps (24) by taper hole (25) place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610678117.4A CN106015542A (en) | 2016-08-17 | 2016-08-17 | Transmission oil pump capable of preventing pressure of transmission oil duct from being too high |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610678117.4A CN106015542A (en) | 2016-08-17 | 2016-08-17 | Transmission oil pump capable of preventing pressure of transmission oil duct from being too high |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106015542A true CN106015542A (en) | 2016-10-12 |
Family
ID=57128096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610678117.4A Pending CN106015542A (en) | 2016-08-17 | 2016-08-17 | Transmission oil pump capable of preventing pressure of transmission oil duct from being too high |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106015542A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240502A (en) * | 2017-12-06 | 2018-07-03 | 西安法士特汽车传动有限公司 | A kind of safety valve and its installation method and speed changer and motor vehicle based on the safety valve |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB243290A (en) * | 1925-08-25 | 1925-11-26 | Birmingham Small Arms Co Ltd | Improvements in or relating to screw oil pumps |
| CN2818850Y (en) * | 2005-09-14 | 2006-09-20 | 中国第一汽车集团公司 | Lubricating oil pump of gearbox |
| CN201547364U (en) * | 2009-11-06 | 2010-08-11 | 周重威 | Liquid-control flow valve for ultra-high-pressure double-pole pump |
| CN102052557A (en) * | 2010-11-13 | 2011-05-11 | 湖南机油泵股份有限公司 | Eccentrically-adjusted variable rotor oil pump |
| CN202452080U (en) * | 2012-01-12 | 2012-09-26 | 高淳县第二机油泵制造有限公司 | Oil pump |
| CN103939722A (en) * | 2014-04-10 | 2014-07-23 | 安徽全柴动力股份有限公司 | Novel rotor-type oil pump |
| CN203867888U (en) * | 2013-11-13 | 2014-10-08 | 瑞立集团瑞安汽车零部件有限公司 | Interference fit type safety valve |
| CN104964151A (en) * | 2015-07-03 | 2015-10-07 | 南京高德机械有限公司 | Diesel engine oil pump |
| CN204785474U (en) * | 2015-07-16 | 2015-11-18 | 东风商用车有限公司 | Transmission oil pump relief valve |
| CN205978384U (en) * | 2016-08-17 | 2017-02-22 | 湖南机油泵股份有限公司 | Can avoid transmission oil way hypertonia's transmission oil pump |
-
2016
- 2016-08-17 CN CN201610678117.4A patent/CN106015542A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB243290A (en) * | 1925-08-25 | 1925-11-26 | Birmingham Small Arms Co Ltd | Improvements in or relating to screw oil pumps |
| CN2818850Y (en) * | 2005-09-14 | 2006-09-20 | 中国第一汽车集团公司 | Lubricating oil pump of gearbox |
| CN201547364U (en) * | 2009-11-06 | 2010-08-11 | 周重威 | Liquid-control flow valve for ultra-high-pressure double-pole pump |
| CN102052557A (en) * | 2010-11-13 | 2011-05-11 | 湖南机油泵股份有限公司 | Eccentrically-adjusted variable rotor oil pump |
| CN202452080U (en) * | 2012-01-12 | 2012-09-26 | 高淳县第二机油泵制造有限公司 | Oil pump |
| CN203867888U (en) * | 2013-11-13 | 2014-10-08 | 瑞立集团瑞安汽车零部件有限公司 | Interference fit type safety valve |
| CN103939722A (en) * | 2014-04-10 | 2014-07-23 | 安徽全柴动力股份有限公司 | Novel rotor-type oil pump |
| CN104964151A (en) * | 2015-07-03 | 2015-10-07 | 南京高德机械有限公司 | Diesel engine oil pump |
| CN204785474U (en) * | 2015-07-16 | 2015-11-18 | 东风商用车有限公司 | Transmission oil pump relief valve |
| CN205978384U (en) * | 2016-08-17 | 2017-02-22 | 湖南机油泵股份有限公司 | Can avoid transmission oil way hypertonia's transmission oil pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240502A (en) * | 2017-12-06 | 2018-07-03 | 西安法士特汽车传动有限公司 | A kind of safety valve and its installation method and speed changer and motor vehicle based on the safety valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| BRPI0916595B1 (en) | oil-free screw compressor | |
| KR101836361B1 (en) | Exhaust-gas turbocharger | |
| CN108429384A (en) | The sealing structure at motor-shaft extending end | |
| CN106051443A (en) | Machine oil pump with idle gear | |
| CN106402629B (en) | Anti- clamping stagnation high voltage protective pressure limiting valve and lubricating oil pump | |
| CN103671995B (en) | Dual Piston axial flow regulates valve | |
| CN106015542A (en) | Transmission oil pump capable of preventing pressure of transmission oil duct from being too high | |
| US10094291B2 (en) | Gear pump intended, in particular, as a high pressure fuel pump | |
| CN106051442A (en) | Speed changer oil pump not prone to oil leakage | |
| CN205978384U (en) | Can avoid transmission oil way hypertonia's transmission oil pump | |
| CN203718353U (en) | Oil pump with pressure limiting valve | |
| CN102287261B (en) | Automatic condensed water drainage device of charge air cooler | |
| US10247105B2 (en) | Air turbine starter with lubrication valve | |
| CN205896656U (en) | Oil pump of relief valve is equipped with | |
| CN103644039B (en) | Engine motor oil pressure limiting pressure release oil return system | |
| CN205349900U (en) | Screw -in cartridge formula guide overflow valve | |
| CN103925077A (en) | Auxiliary power output structure of diesel engine | |
| CN202914825U (en) | Leakage-type pressure-limiting valve | |
| CN106439129A (en) | Anti-seizing low-pressure protection pressure-limiting valve and engine oil pump | |
| CN109027205B (en) | Lubricating oil distributor structure | |
| US20150167667A1 (en) | Oil pump device | |
| CN105370564A (en) | Gear pump front cover with overflow protecting function | |
| CN103759120B (en) | A kind of lubricating oil pump with pressure limiting valve | |
| CN200958680Y (en) | Lube-oil distributor | |
| CN203671213U (en) | Marine steam turbine support bearing lubricant feed display instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161012 |