CN203868190U - Hydraulic retarder provided with idle self-lubrication system - Google Patents

Hydraulic retarder provided with idle self-lubrication system Download PDF

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Publication number
CN203868190U
CN203868190U CN201420253913.XU CN201420253913U CN203868190U CN 203868190 U CN203868190 U CN 203868190U CN 201420253913 U CN201420253913 U CN 201420253913U CN 203868190 U CN203868190 U CN 203868190U
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CN
China
Prior art keywords
oil
retarder
communicated
stator
oil sump
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CN201420253913.XU
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Chinese (zh)
Inventor
王伟健
刘朋成
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陕西法士特齿轮有限责任公司
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Priority to CN201420253913.XU priority Critical patent/CN203868190U/en
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Publication of CN203868190U publication Critical patent/CN203868190U/en

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Abstract

The utility model provides a hydraulic retarder provided with an idle self-lubrication system. A work cavity is communicated with an oil tank through an idle lubrication valve; an oil inlet and an exhaust port are formed in a stator blade, the exhaust port in a stator is communicated with a float valve, a lower cavity of the oil tank is communicated with the oil inlet in the stator blade through a work cavity oil inlet channel, and an oil outlet in the stator is communicated with a heat exchanger which is communicated with the oil tank; a gas source is communicated with an upper cavity of the oil tank through an electromagnetic valve, a gas outlet is further formed in the electromagnetic valve, and part of gas in the work cavity is discharged through the float valve during working of the retarder; and after the retarder is shut down, gas above the oil tank is directly discharged through a gas outlet of the electromagnetic valve when working oil flows back to the oil tank from the working cavity, a large amount of oil in the work cavity rapidly flows back to the oil tank, the brake force of the retarder rapidly disappears, and extra power loss when an engine is speeded up is avoided.

Description

A kind of hydrodynamic retarder with idle running self lubricating system
Technical field
The utility model belongs to automotive field, relates to automobile-used hydrodynamic retarder, is specifically related to a kind of hydrodynamic retarder with idle running self lubricating system.
Background technique
Hydrodynamic retarder, as a kind of main complemental brake system, has been widely used in commercial car abroad.Hydrodynamic retarder is introduced into China already, in recent years, is accompanied by the more and more attention of China to road safety, and the appearance of associated safety regulation, and retarder is by increasing driver and the selected acceptance of car owner.Hydrodynamic retarder is made up of stator, rotor, hollow shaft, adpting flange, heat exchanger and oil sump etc.Retarder be by hollow shaft be connected with output shaft of gear-box, adpting flange is connected with transmission shaft, hollow shaft is connected by interior external splines again with flange plate.Gearbox drives hollow shaft to rotate while rotation, and then the method for drive adpting flange rotates.Hollow shaft is connected with rotor by connecting bolt.When carrying out when slow, control system is sent instruction, control control valve is opened, control gas the medium in oil sump (machine oil) is pressed into the active chamber between stator and rotor, because rotor is connected with vehicular transmission shaft by hollow shaft, adpting flange, and stator is fixed on the shell of retarder, rotor is rotated by output shaft of gear-box rotating band moving medium together.After high speed liquid flow impact stator, apply one and the rightabout active force of sense of rotation to rotor, this power slowly lowers rotating speed of transmission shaft.Along with rotating speed of transmission shaft declines, the speed of a motor vehicle also slows down, and produces retarded acting.In the time removing retarded acting, control system dead electricity, control valve is closed, and the gas that acts on upper end, grease chamber is excluded, and the liquid in active chamber is back to oil groove by oil pressure under the effect of centrifugal force, and retarder is deactivated.In addition while structurally ensureing active chamber without oil, do not have damping yet, ensure that retarder can not produce the many consume fuel of resistance in the time of Vehicle Driving Cycle.
Retarder, under above-mentioned working state, has been full of working medium-machine oil in the active chamber that rotor forms, and it not only plays a part to form braking force, plays the part such as oil sealing, bearing in lubricated retarder simultaneously, ensures the retarder effect in working life.But under the idle state of retarder, the parts such as oil sealing, bearing just cannot lubricate, go down for a long time and can wear and tear, and destroy, reduce the working life of retarder.If in the time that retarder is idle, the part such as oil sealing, bearing still can obtain lubricated just aobvious most important like this.For this problem, there are at present two kinds of solutions both at home and abroad.
One, specialized designs lubricating oil path in retarder, this method needs the power plant of extra promotion lubricating oil flow, this just needs independently oil pump or other device, the shortcoming of this method is that speed buffer structure becomes complexity, be unfavorable for manufacturing, increase cost simultaneously, reduced the competitiveness of product in market.
Two, excitation is lubricated.This method is certain program that writes in the controller of retarder, and in the time that people's inoperation retarder makes its work, buffer controller still sends instruction, makes to control gas and enters oil sump, and machine oil is pressed into active chamber and then goes lubrication oil seal and bearing.This method only need change the control program of retarder, and the structure of retarder is simple.But shortcoming is for you cannot reasonably judge the opportunity of sending instruction, and provides great control gas pressure.The control gas pressure providing is excessive, can make retarder produce larger braking force, and so not only increased extra power loss but also can allow the driver who is driving feel uneasiness, more have very in sleet road conditions, cause defective steering stabilizer, the accident of cutting somebody's hair.If the control gas pressure providing is too small, the fluid that enters active chamber is not enough, and oil sealing and bearing just can not well be lubricated, and does not reach the intention itself designing.
Three, Chinese patent application ZL201220560032.3 discloses a kind of for the hydraulic machine lubricated pressure valve that dallies, a kind of hydraulic machine idle running lubrication system is wherein disclosed, by idle running lubrication pressure valve, the pressure reduction that while utilizing hydraulic machine rotation, flow field produces is pressed into lubricant oil in active chamber from oil sump, lubricating rotary parts; This idle running lubrication system, in retarder working procedure, the air in source of the gas enters after oil sump and active chamber, gas unnecessary in active chamber is directly emptying from active chamber, now also there is some work medium to discharge with gas, cause working medium to run off and waste, cause motor by oil pollution simultaneously; Simultaneously in out-of-work moment of retarder, air in oil sump will be introduced into retarder active chamber then could be emptying, causes the fluid in active chamber to get back to fast in oil sump, and retarder oil return speed is slow, affect speed of a motor vehicle raising efficiency, affect driver driving travelling comfort.
Model utility content
The purpose of this utility model is to overcome prior art defect, and a kind of hydrodynamic retarder with idle running self lubricating system is provided, and solves the idle running lubrication problem of hydrodynamic retarder, has improved the oil return speed of retarder simultaneously.
For achieving the above object, the technological scheme that the utility model adopts is:
With a hydrodynamic retarder for idle running self lubricating system, comprise the active chamber, oil sump, heat exchanger, solenoid valve, source of the gas and the controller that are formed by stator and rotor; Active chamber is communicated with oil sump return opening through the lubricated valve that dallies, on stator vane, offer filler opening and relief opening, relief opening on stator communicates with float-controlled valve, the cavity of resorption of oil sump communicates with the filler opening on stator vane through active chamber oil inlet passage, on stator, also offer oil outlet, this oil outlet and heat exchanger communicate, and heat exchanger is communicated with oil sump; Source of the gas is communicated with oil sump epicoele through solenoid valve, and solenoid valve is also provided with air outlet, and when retarder is closed, the working gas entering in oil sump epicoele is discharged through the air outlet of solenoid valve.
Relief opening on described stator is communicated with centrifugal oil separator entrance through float-controlled valve, after collecting oily one-way valve, and oil sump epicoele is communicated with centrifugal oil separator entrance behind the air outlet of suction tude, solenoid valve, and centrifugal oil separator air outlet is emptying through baffler.
The heat exchanger one-way valve that prevents that fluid from refluxing is installed between described heat exchanger and oil sump.
The hydrodynamic retarder of band idle running self lubricating system of the present utility model, in the time that retarder dallies, closed electromagnetic valve, gas in source of the gas stops entering oil sump force feed liquid and enters retarder active chamber, due to the rotor rotation in retarder, the inside and outside pressure reduction that produces of active chamber, in oil sump, small part fluid will be pressed into active chamber, this part fluid is along with the stirring of active chamber Leaf is driven each rotary component, realize the component such as oil sealing, bearing lubricated, solved the idle running lubrication problem of hydrodynamic retarder; After retarder is closed, when work fluid flows back to oil sump from active chamber, the gas of oil sump top is directly discharged through solenoid valve air outlet, and a large amount of fluid of active chamber flow back into rapidly in oil sump, retarder braking force rapidly disappears, and avoids motor extra power loss of when speed-raising.
Further, the gas of discharging through the air outlet of the relief opening on stator and solenoid valve is discharged after centrifugal oil separator separates fluid, and fluid is collected reuse, avoids fluid loss to waste, and avoids motor etc. by oil pollution simultaneously.
Brief description of the drawings
Fig. 1: the fundamental diagram of hydrodynamic retarder;
Fig. 2: the idle running selflubricating schematic diagram of hydrodynamic retarder;
In figure: 1-stator; 2-heat exchanger inlets pipeline; 3-rotor; 4-heat exchanger; 5-heat exchanger one-way valve; 6-oil sump; 7-active chamber oil inlet passage; The lubricated valve of 8-idle running; 9-suction tude; 10-solenoid valve; 11-source of the gas; 12-float-controlled valve; 13-collect oily one-way valve; 14-centrifugal separaton.
Embodiment
Below in conjunction with accompanying drawing, the utility model is elaborated.
As shown in Figure 1, hydrodynamic retarder of the present utility model by active chamber, oil sump 6, heat exchanger 4, heat exchanger one-way valve 5, controller, solenoid valve 10, float-controlled valve 12, collect oily one-way valve 13, centrifugal separaton 14 forms.Wherein active chamber is by stator 1 and rotor 3 is contactless forms, and its effect is to provide space for working medium builds stable pressure in the time that retarder is worked.Active chamber oil outlet is communicated with oil sump 6 return openings through the lubricated valve 8 that dallies, stator and rotor are provided with the unequal blade of number in its radial direction respectively, on this external stator radial blade, offer filler opening and relief opening, relief opening on stator communicates with float-controlled valve 12, stator offers oil outlet, and this oil outlet and heat exchanger communicate and converge to oil sump.Oil sump 6 is used for storing the working medium of hydrodynamic retarder.Between the cavity of resorption of oil sump 6 and active chamber, be connected by active chamber oil inlet passage 7.Heat exchanger 4 is by oil duct and cooling fluid passage form from level to level.Heat exchanger entrance communicates with active chamber by heat exchanger inlets pipeline 2, and heat exchanger outlet communicates with oil sump 7 by heat exchanger one-way valve 5.The braking heat that cooling liquid absorbs retarder working medium is taken away and is dispelled the heat by the radiation system that pipeline finally takes car load to.Meanwhile, heat exchanger sends back to oil sump cooled fluid.Controller is connected with solenoid valve 10, and control retarder work and exit and enter the gas pressure in retarder, thus the braking torque of control retarder.Float-controlled valve 12 communicates with the relief opening on stator, relief opening on stator is communicated with centrifugal oil separator 14 entrances through float-controlled valve 12, after collecting oily one-way valve 13 and converging with the air outlet of solenoid valve 10, Oil in circulating gas liquid is through the separated recovery of centrifugal oil separator 14, and centrifugal oil separator 14 air outlets are emptying through baffler.
When hydrodynamic retarder work, controller sends instruction, retarder is got gas from source of the gas 11, gas enters solenoid valve 10 by pipeline, gas is after solenoid valve regulates, enter the epicoele of oil sump through suction tude 9 with new steady pressure, the work fluid in oil sump can enter in retarder active chamber through the inside oil duct of retarder itself under gas pressure.Owing to entering work fluid in active chamber, the gas in active chamber is discharged by baffler after float-controlled valve, centrifugal separaton 14.Now, the lubricated valve 8 of idle running is in closed condition, and lubricated valve 8 structures of idle running refer to patent ZL201220560032.3, and work fluid forms circulation and produces braking torque in active chamber.The oil outlet of the work fluid of active chamber on stator enters into cools down, and cooling complete fluid returns active chamber, thereby the braking moment that can continue to provide to the external world is provided.After retarder is closed, work fluid flows back to oil sump from active chamber, and the gas of oil sump top is discharged by baffler after centrifugal separaton through the air outlet of solenoid valve.
As shown in Figure 2, when retarder is not worked, when idle running, closed electromagnetic valve, the gas in source of the gas does not enter oil sump force feed liquid through solenoid valve and enters retarder active chamber.But due to the rotor rotation in retarder, the inside and outside pressure reduction that produces of active chamber, in oil sump, fluid will be pressed into active chamber by small part, and rotor rotating speed more high workload chamber inside and outside differential pressure is larger, and the fluid amount that enters active chamber is more.This part fluid is along with the stirring of active chamber Leaf is driven each rotary component, realize the component such as oil sealing, bearing lubricated, now, the lubricated valve of idle running is in open mode, then working medium returns to oil sump by the through hole of idle running valve body, forms lubricated circulation.Due to hydraulic machine racing speed, more high workload chamber inside and outside differential pressure is larger, and the working medium that sucks active chamber inside is also just more, makes full use of this characteristic, and this idle running self lubricating system meets the lubricating requirement under retarder different rotating speeds.
Retarder of the present utility model not only effectively solves the mask work of working medium and gas, can in the time that not working, well realize retarder again idle running selflubricating, and relatively simple for structure, be conducive to save hydrodynamic retarder cost and maintenance difficulty, increase the competitive ability of product in market.

Claims (3)

1. the hydrodynamic retarder with idle running self lubricating system, is characterized in that: comprise the active chamber, oil sump (6), heat exchanger (4), solenoid valve (10), source of the gas (11) and the controller that are made up of stator (1) and rotor (3); Active chamber is communicated with oil sump (6) return opening through the lubricated valve (8) that dallies, on stator (1) blade, offer filler opening and relief opening, relief opening on stator communicates with float-controlled valve (12), the cavity of resorption of oil sump (6) communicates with the filler opening on stator (1) blade through active chamber oil inlet passage (7), on stator, also offer oil outlet, this oil outlet and heat exchanger (4) communicate, and heat exchanger (4) is communicated with oil sump (6); Source of the gas (11) is communicated with oil sump epicoele through solenoid valve, and solenoid valve (10) is also provided with air outlet, and when retarder is closed, the working gas entering in oil sump epicoele is discharged through the air outlet of solenoid valve.
2. the hydrodynamic retarder of band idle running self lubricating system as claimed in claim 1, it is characterized in that: the relief opening on described stator is communicated with centrifugal oil separator (14) entrance through float-controlled valve (12), after collecting oily one-way valve (13), oil sump epicoele is communicated with centrifugal oil separator (14) entrance behind the air outlet of suction tude (9), solenoid valve (10), and centrifugal oil separator (14) air outlet is emptying through baffler.
3. the hydrodynamic retarder of band idle running self lubricating system as claimed in claim 1 or 2, is characterized in that: the heat exchanger one-way valve (5) that prevents that fluid from refluxing is installed between described heat exchanger (4) and oil sump (6).
CN201420253913.XU 2014-05-16 2014-05-16 Hydraulic retarder provided with idle self-lubrication system CN203868190U (en)

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104613106A (en) * 2015-02-15 2015-05-13 陕西法士特齿轮有限责任公司 Oil liquid circulation system of hydrodynamic retarder
CN105909960A (en) * 2016-06-21 2016-08-31 陕西法士特齿轮有限责任公司 Forced idling lubrication system of hydraulic retarder
CN109253188A (en) * 2018-11-01 2019-01-22 陕西法士特齿轮有限责任公司 A kind of integrated form Retarder
CN110056584A (en) * 2019-03-28 2019-07-26 江苏大学 A kind of heat recovery system and its control method of Retarder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104613106A (en) * 2015-02-15 2015-05-13 陕西法士特齿轮有限责任公司 Oil liquid circulation system of hydrodynamic retarder
CN105909960A (en) * 2016-06-21 2016-08-31 陕西法士特齿轮有限责任公司 Forced idling lubrication system of hydraulic retarder
CN109253188A (en) * 2018-11-01 2019-01-22 陕西法士特齿轮有限责任公司 A kind of integrated form Retarder
CN110056584A (en) * 2019-03-28 2019-07-26 江苏大学 A kind of heat recovery system and its control method of Retarder

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