CN2233333Y

CN2233333Y - Pressure exhaust automobile hydraulic operating mechanism

Info

Publication number: CN2233333Y
Application number: CN 95222897
Authority: CN
Inventors: 廖昱
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-10-16
Filing date: 1995-10-16
Publication date: 1996-08-21
Anticipated expiration: 2005-10-16

Abstract

The utility model relates to an automobile hydraulic operation mechanism capable of pressurization and exhaustion. An oil storage tank of an automobile clutch and an oil storage tank of a hydraulic brake are designed anew, a pressurization gas nipple is designed on the utility model, and a hydraulic system becomes a pressurization type. When the hydraulic system which air enters can not operate normally, an aerator of a tire of an automobile or an outer source is used, compressed air is led to the oil storage tank, the air in the system is exhausted in a forcible way, and the mechanism is recovered normally. The utility model has the advantages of simple structure, easy operation method and good exhaust effect. In addition, the utility model relieves maintenance personnel's labor intensity and perfects the hydraulic control technique of the automobile.

Description

The automobile hydraulic steering unit of exhaust can pressurize

The utility model is used for the automobile that power-transfer clutch adopts hydraulic gear to handle, and the automobile that adopts hydraulic brake mechanism.

Automobile if in the clutch fluid pressing system air is arranged, can cause clutch operating system work mal after adopting the power-transfer clutch of hydraulic gear manipulation, and the power-transfer clutch effective travel is not enough, and power-transfer clutch lost efficacy, and can't separate.Automobile can not normally be started to walk, gear shift and make, and has had a strong impact on running car.There is air also can make automobile brake malfunctioning in the same hydraulic braking system for automobile, has a strong impact on ride safety of automobile.So in the clutch fluid pressing system, and in the hydraulic brake system,, must carry out exhaust once air is arranged.In autoclutch hydraulic efficiency pressure system and the hydraulic brake system air is arranged, this situation is very general, for example: filling during synthetic brake fluid in hydraulic efficiency pressure system for the first time (annotate: the autoclutch hydraulic efficiency pressure system, filling also be the synthetic brake fluid of the different trades mark.This synthetic brake fluid requires to adopt not highly volatile plant oil in theory, and forbid to adopt mineral oils, but in fact all have volatility, be existing homemade synthetic brake fluid by it, its volatility is more serious.And the synthetic brake fluid of import is on the high side); When the synthetic brake fluid long-term use evaporates into gas in the hydraulic tubing under the situation of being heated; When hydraulic tubing has leakage; Under the situations such as replacing synthetic brake fluid, all air admission can be arranged in the hydraulic efficiency pressure system.Therefore exhaust work often carries out in the automotive use process.

Car production producer they the establishment operator's hand book in, the method for all having enrolled the clutch hydraulic pressure system exhaust.Here make a copy of a Dong Feng Motor Corporation, in " east wind EQ1092 series goods carrying vehicle operator's hand book " 6-12 page or leaf of publishing in 1993, clutch hydraulic pressure system exhaust method: " 1. earlier will fill it up with 719 synthetic brake fluids in the power-transfer clutch storage tanker; 2. take off the dust cap in clutch slave cylinder (in the change-speed box left side), unscrew the bleeder screw of wheel cylinder, end with the plastic pipe of the same bore of bleeder screw exhaust nozzle is inserted in the tube that braking liquid is housed, stepping on clutch pedal back and forth, promptly there is bubble from tube, to discharge, after do not have bubble to discharge, treadle effort increases, tighten bleeder screw, take off plastic pipe." please noting: this handbook requires vehicle maintenance and repair personnel " stepping on clutch pedal back and forth ", " not discharging up to there being bubble "." back and forth " be two words in handbook, and in the manipulation of physical, because clutch master cylinder exhaust gas pressure under natural atmosphere pressure is limited, and the existing clutch fluid pressing system means of not pressurizeing, clutch hydraulic pressure maneuvering system as shown in Figure 1 is exactly the clutch hydraulic pressure maneuvering system that east wind EQ1092F goods carrying vehicle adopts, often this " back and forth " is exactly half an hour, even one hour, and maintainer otherwise the stepping on clutch pedal that stops can imagine that labour intensity is very big.Also there is same problem when in the same hydraulic braking system for automobile air being arranged.

The purpose of this utility model provides a kind of automobile hydraulic steering unit of the exhaust of pressurizeing, in car hydraulics, advance air, when power-transfer clutch and misfunctioning of brake, can feed pressurized air, air in the hydraulic efficiency pressure system is discharged by force, thereby reduce the exhaust required time, alleviate maintainer's labour intensity, make the automobile hydraulic manipulation technology more perfect.

The purpose of this utility model is achieved in that power-transfer clutch storage tanker in the redesign clutch fluid pressing system, and covering at storage tanker increases the pressurization valve, but makes the power-transfer clutch storage tanker become the adding pressure type storage tanker.Perhaps with this power-transfer clutch store oil cover that the pressurization valve is arranged as driver's tool, each adopts the automobile of clutch hydraulic pressure steering unit dispensing, when the needs exhaust former store oil cover is changed.The bore of pressurization valve is identical with the bore of automobile tyre inflation mouth, (this device is made up of the inflated hose of getting in air valve, the driver's tool on the air tank in the auto brake system, the air tank so just can to utilize the Tire Inflation System of automobile self, with the pressurized air utilization get air valve directly from air tank, take out be inflation of tire), for the clutch hydraulic pressure system exhaust provides high pressure, after pressurized air is fed the power-transfer clutch storage tanker, just the air in the clutch fluid pressing system is discharged by force, thereby remove the stepping on clutch pedal during without exhaust.For hydraulic brake system, it also is redesign braking liquid storage tanker, cover increase pressurization valve at storage tanker, but make the braking liquid storage tanker become the adding pressure type storage tanker, but must adopt the external compression air source that high pressure is provided during exhaust, because after automobile adopts hydraulic braking, just do not have Tire Inflation System to have utilized.

The utility model is compared the advantage that has with original automobile hydraulic maneuvering system: good exhaust effect, the exhaust efficiency height is laborsaving, and is easy and simple to handle.Just original hydraulic system is made local improvement, do not increase system, and only utilized the system of automobile to have.Manufacturing cost is compared several not exhaling after improving with original system increases, and does not influence other performance.In experiment, when feeding after air pressure is the pressurized air of 6.5x100KPa, the pressurized air in the 5 second internal clutch hydraulic efficiency pressure systems is just by emptying, and the power-transfer clutch ash is multiple normal.The good effect that the utlity model has is: perfect automobile hydraulic manipulation technology has overcome the deficiency of original technology.

The drawing of accompanying drawing is described as follows: Fig. 1 is the spatial structure sketch of the clutch hydraulic pressure steering unit of existing east wind EQ1092 series goods carrying vehicle employing; Fig. 2 is the spatial structure sketch of the autoclutch hydraulic control mechanism of the exhaust of pressurizeing of the present utility model; But Fig. 3 is an adding pressure type power-transfer clutch storage tanker cap assembly set-up diagram in the utility model; Fig. 4 is the front view and the cut away left side view of power-transfer clutch storage tanker sealing cushion for cover in the utility model; Fig. 5 is the part front view and the part sectional view of power-transfer clutch store oil cover in the utility model; Fig. 6 is that the master of power-transfer clutch storage tanker dust cap in the utility model looks full sectional view.

Specific embodiments of the present utility model following (is example with the clutch hydraulic pressure steering unit): redesign power-transfer clutch store oil cover, its structure and shape are as shown in Figure 5, the lid central authorities projection valve that pressurizes exactly, it and store oil cover all are plastic products, and be that a compression molding is an integral body, it is the passage of 1mm that there is a diameter in pressurization valve central authorities, except the pressurization valve that increases, the planform of store oil cover is constant, that is to say consistent with existing autoclutch store oil cover.Shown in Figure 3 is power-transfer clutch storage tanker cap assembly, and the part that wherein is labeled as " 7 " is exactly a store oil cover main body, convenient for describing later on, is called " part 7 "; The part that is labeled as " 6 " is that the rubber dust cap is called " part 6 "; The part that is labeled as " 8 " is that rubber gasket is called " part 8 ".Shown in Figure 4 is the concrete detail drawing of part 8 parts, and the effect of this rubber gasket (part 8) in entire mechanism is: the assurance pressurized air is not rushed down leakage when feeding pressurized with compressed air, thereby guarantees to have enough air pressure with the air exhaustion in the clutch fluid pressing system.It is the aperture of 0.5mm that there are 6 diameters in part 8 central authorities, and its effect is to make high pressure air directly not blow to the hydraulic pressure pasta when feeding pressurized with compressed air, prevents the synthetic brake fluid atomizing, guarantees to exert pressure evenly.Shown in Figure 6 is the concrete detail drawing of part 6 parts, the effect of this rubber dust cap is when not needing emptying gas in using at ordinary times, be worn on the pressurization valve of power-transfer clutch store oil cover and prevent that dust from entering the clutch fluid pressing system, two diameters are arranged at rubber dust cap top is the aperture of 1mm, as shown in Figure 6, its effect is to guarantee that power-transfer clutch storage tanker liquid level communicates with atmosphere, prevents to occur in the hydraulic efficiency pressure system negative pressure of vacuum.When needs emptying gas, this rubber dust cap is taken off, put inflated hose and both can.Shown in Figure 2 is spatial structure sketch of the present utility model, and what wherein be labeled as " 2 " is that clutch master cylinder is called " part 2 "; What be labeled as " 3 " is that clutch slave cylinder is called " part 3 "; Be labeled as " 5 " but be that the adding pressure type power-transfer clutch storage tanker that has in the utility model of the valve that pressurizes is called " part 5 "; What be labeled as " 4 " is that air tank in the Tire Inflation System is called " part 4 "; What be labeled as " 9 " is that inflated hose is called " part 9 "; What be labeled as " 10 " is that the air valve of getting in the Tire Inflation System is called " part 10 ".But by adding pressure type power-transfer clutch storage tanker " part 5 ", clutch master cylinder " part 2 ", clutch slave cylinder " part 3 " but constituted the autoclutch hydraulic control mechanism of adding pressure type exhaust of the present utility model.Between " part 5 " and " part 2 ", be the clutch fluid pressuring oil pipe between " part 2 " and " part 3 ", clutch slave cylinder " part 3 " center projections partly is a bleeder screw.Can not there be air to exist in the hydraulic plumbing system of autoclutch hydraulic control mechanism requirement power-transfer clutch oil pipe, clutch master cylinder, clutch slave cylinder, formation.By air tank " part 4 ", inflated hose " part 9 ", what get that air valve " part 10 " constitutes is Tire Inflation System.Admission port shown in getting on the air valve in the accompanying drawing 2, compressed-air actuated source is the air compressor on the automotive engine, the air pressure in the air tank can detect with the indoor air-pressure gauge of vehicle drive.Direct employing is with more convenient when certainly external air source being arranged.

The using method of the utility model (the clutch hydraulic pressure steering unit with the exhaust of can pressurizeing is an example), promptly adopt by (in the automotive use handbook) behind the utility model, the method for exhausting of autoclutch hydraulic efficiency pressure system just can be described below: 1, will fill it up with 719 synthetic brake fluids in the power-transfer clutch storage tanker earlier; 2, take off the dust cap in clutch slave cylinder (in the change-speed box left side), unscrew the bleeder screw of wheel cylinder, an end with the plastic pipe of the same bore of bleeder screw exhaust nozzle is enclosed within on the bleeder screw, the other end is inserted in the tube that braking liquid is housed.3, the blanking cover of getting air valve in the Tire Inflation System is backed out, again inflation of tire flexible pipe one end is docked with getting air valve, tighten joint; Inspection sees that air-pressure gauge remains between the 4x100KPa-6.5x100KPa air tank internal gas pressure, and as inadequately, fire an engine makes compressor operating, air tank inflation beginning; As too high, should exit.4, take off dust cap on the power-transfer clutch store oil cover pressurization valve, again the inflated hose other end is enclosed within on the pressurization valve, feed pressurized air 2-5 second, tighten bleeder screw, the examination pedal of clutch, not enough as treadle effort, feed pressurized air once more, when treadle effort is enough, takes off plastic pipe, inflated hose, put dust cap.Notice: 1. air pressure can not be too high, and inflationtime can not be of a specified duration excessively, in case blow the power-transfer clutch storage tanker quick-fried.2. if any the external compression air source, can directly adopt, can be more convenient.

For hydraulic braking system for automobile, its principle and using method and autoclutch hydraulic control mechanism are similar, then must adopt the external compression air source when only being to use, because after the automobile employing hydraulic braking, just do not have Tire Inflation System to have utilized.

Claims

A kind of automobile hydraulic steering unit of the exhaust of pressurizeing, but by the adding pressure type storage tanker, hydraulic total pump, the hydraulic pressure wheel cylinder, and hydraulic tubing constitutes, it is characterized in that: redesigned the storage tanker in the automobile hydraulic mechanism, covering at storage tanker has increased the pressurization valve, but make storage tanker become the adding pressure type storage tanker, also can the store oil cover of pressurization valve be arranged as driver's tool with this, each adopts the automobile of hydraulic control mechanism dispensing, when the needs exhaust, former store oil cover is changed, but thereby make whole automobile hydraulic steering unit become adding pressure type, the bore of pressurization valve is identical with the bore of automobile tyre inflation mouth, so just can utilize the Tire Inflation System of automobile self, for the clutch hydraulic pressure system exhaust provides high pressure, in the automobile hydraulic steering unit, air is arranged, cause hydraulic pressure wheel cylinder effective travel not enough, when making the hydraulic control mechanism cisco unity malfunction, pressurized air is fed storage tanker, exert pressure, just the air in the hydraulic efficiency pressure system is discharged by force to hydraulic circuit.