Clutch automatic exhaust system and method for exhausting thereof
The present invention relates to a kind of automobile clutch, specifically, relate to a kind of clutch automatic exhaust system and method for exhausting thereof.
Automobile clutch oil gas operation system is one of main operation system of automobile, and from forming configuration aspects, it is mainly comprised of clutch master cylinder, clutch slave cylinder, oil storage tank, bleeder screw, pipe joint and oil pipe.In automobile using process, in clutch oil gas operation system, usually can enter air, as: the dismounting of clutch, replacing; Seal leakage in each parts using process; The air not draining during oiling; Vapour lock producing in clutch work etc., these gases rest in clutch actuation system, can cause clutch separation not thorough, and then cause clutch to break down, and therefore, exhaust effect has just determined the rate of breakdown of clutch to a great extent.
At present, in existing clutch actuation system, bleeder screw is arranged on clutch slave cylinder, driver or maintenance man are by manually screwing aperiodically bleeder screw, just can be by inner Bas Discharged, thus the normal work of clutch actuation system guaranteed, avoid breaking down.But artificial exhaust bothers after all, time and effort consuming, and cannot realize timely exhaust, and potential safety hazard exists all the time, and Security is difficult to meet people's actual demand.Meanwhile, existing exhaust mode can be discharged intrasystem medium in the lump, so that can cause very large pollution to environment, is extremely unfavorable for environmental protection.In addition, an exhaust is difficult to drain, and expends a lot of driving mediums, increases user's maintenance cost.
Summary of the invention
The object of the present invention is to provide a kind of clutch automatic exhaust system, solve in prior art clutch and adopt artificial exhaust to take time and effort and Security is low, the feature of environmental protection is poor and the very low problem of the Economy of driving medium own.
To achieve these goals, the technical solution used in the present invention is as follows:
Clutch automatic exhaust system, comprise the clutch master cylinder and the clutch slave cylinder that are interconnected, and the liquid container being communicated with described clutch master cylinder, also be provided with the compensating tank being communicated with described liquid container by air conduit, with the electric oil pump being communicated with described clutch slave cylinder by a liquid-transport pipe-line, described compensating tank is also communicated with described electric oil pump by another liquid-transport pipe-line; Top at described compensating tank also offers vent.
Say exactly, for preventing liquid backflow, be provided with for replacing the connecting bolt of bleeder screw on described clutch slave cylinder, on this connecting bolt, safety check is installed, described electric oil pump is connected with this safety check by liquid-transport pipe-line.
Further, described safety check comprises the female valve body that arranges matching with described connecting bolt; Described connecting bolt inside is provided with central through bore, described valve inner is provided with heavy caliber through hole and the small-bore through hole being interconnected, one end near small-bore through hole in this heavy caliber through hole is provided with spool, and the other end is provided with the spring being connected with this spool.
Further, the path length of described spool is greater than the path length of described small-bore through hole, and is less than the path length of heavy caliber through hole.
Again further, on the sidewall of described liquid container, level sensor is installed, described compensating tank is also communicated with described liquid container by a conduit, and the one-way valve being connected with this level sensor is also installed on this conduit.
Preferably, the two ends of described air conduit connect respectively the sidewall upper of described liquid container and the sidewall upper of compensating tank, and the two ends of described conduit connect respectively the side wall lower ends of described liquid container and the side wall lower ends of compensating tank.
Preferably, described electric oil pump is communicated with the bottom of described compensating tank by liquid-transport pipe-line.
In addition, in order guaranteeing better, to prevent medium back flow, to the invention provides the cooperating structure of following two kinds of spools and valve body: (1) described spool is delivery valve structure, correspondingly, the junction surface of described heavy caliber through hole and small-bore through hole is vertical surface; (2) described spool is spherical structure, and correspondingly, the junction surface of described heavy caliber through hole and small-bore through hole is arc surface.By above-mentioned design, can guarantee well spool and the direct compatible degree of valve body, while guaranteeing that spool contacts with small-bore through hole, gapless exists, thereby thoroughly cuts off the approach of medium back flow.In addition, the most simply can also use solenoid valve to control.
Take the said equipment as basis, and the present invention also provides the method for exhausting of above-mentioned clutch automatic exhaust system, comprises the following steps:
(1), when air will enter clutch system and need exhaust, start electric oil pump;
(2) liquid in compensating tank, in the effect of electric oil pump, arrives the safety check on clutch slave cylinder by liquid-transport pipe-line, and washes valve ball open, enters clutch slave cylinder;
(3) liquid enters clutch master cylinder from the liquid entering hole of clutch slave cylinder, and then enters liquid container from clutch master cylinder, impels the liquid level in liquid container to rise;
(4) liquid level in liquid container rises, and under driving medium Action of Gravity Field, forces air to enter compensating tank from airway, and discharges from the vent at compensating tank top;
(5) until clutch energy normal exhaust or ato unit step on clutch can arrange smoothly into grade time, electric oil pump cuts out, whole hydraulic system air drains.
The present invention be take existing clutch actuation system as basis, do not changing on the basis of existing operation system, by setting up the equipment such as compensating tank and electric oil pump, utilize liquid in compensating tank by electric oil pump to the gas mineralization pressure in liquid container, master cylinder, wheel cylinder and pipeline, force air to enter compensating tank, and then discharge the principle of air, realized dexterously the automatic vent of clutch, not only simple to operate, and time saving and energy saving.
Compared with prior art, the present invention has following beneficial effect:
(1) the present invention is not changing under the prerequisite of existing clutch actuation system, compensating tank and electric oil pump have been set up, by pump into driving medium in original liquid container, force the air in clutch slave cylinder, clutch master cylinder, liquid container and pipeline to enter compensating tank, realize the automatic discharge of gas, in the self-bleeding while, do not affect the normal work of clutch actuation system, time saving and energy saving, easily and thoroughly, exhaust effect is very remarkable.
(2) MEDIA FLOW when the present invention normally works with clutch to the flow direction that pumps into medium in liquid container is to contrary, and MEDIA FLOW is through all parts of whole clutch actuation system, so the gas that enters clutch actuation system all parts can be got rid of completely, totally, thoroughly, fundamentally stopped the possibility that clutch breaks down, the safety and reliability of clutch actuation system is promoted greatly.
(3) the present invention is provided with safety check on connecting bolt, can effectively prevent medium back flow, guarantees that the medium in compensating tank enters liquid container smoothly, realizes safely and fast automatic vent, without manual operation.
(4) the present invention can discharge the gas that enters clutch actuation system within the shortest time (three minutes), in time, efficiently, safety, it has fundamentally changed exhaust mode and the venting principleand of existing clutch actuation system, for clutch actuation system, open up a brand-new exhaust approach, there is very great innovation meaning and social value.
(5) principle of the invention is simple, design ingenious, it is convenient to realize, handling safety, be applicable to all existing automobiles, the clutch of engineering machinery, hydraulic braking sytem list wheel cylinder, the hydraulic braking sytem of two wheel cylinders and various engineering machinery, can avoid the braking force imbalance problem thoroughly not causing because of hydraulic braking sytem exhaust, and the present invention only discharges air in exhaust process, without medium is discharged, thereby avoided being directly discharged to because of medium the environmental pollution that cause in rapair and maintenance place, and realized recycling of medium, effectively reduce user's maintenance cost, improved its economic value, be applicable to very much applying.
Accompanying drawing explanation
Fig. 1 is the present invention-embodiment 1 structural representation.
Fig. 2 is the present invention-embodiment 2 structural representation.
Fig. 3 is the present invention-embodiment 3 structural representation.
Fig. 4 is a kind of structural representation of safety check in the present invention.
Fig. 5 is the another kind of structural representation of safety check in the present invention.
In above-mentioned accompanying drawing, the component names that reference character is corresponding is as follows:
1-clutch master cylinder, 2-clutch slave cylinder, 3-liquid container, 4-compensating tank, 5-electric oil pump, 6-level sensor, 7-one-way valve, 8-safety check, 9-vent, 10-air conduit, 11-liquid-transport pipe-line, 12-connecting bolt, 13-valve body, 14-spool, 15-spring.
Below in conjunction with drawings and Examples, the invention will be further described, and embodiments of the present invention include but not limited to the following example.
As shown in Figure 1, it is example that the clutch actuation system of pneumatic brake type is take in this enforcement, comes that the present invention is described in detail.This clutch automatic exhaust system, mainly comprise clutch master cylinder 1, clutch slave cylinder 2, liquid container 3, compensating tank 4 and electric oil pump 5, wherein, compensating tank 4, electric oil pump 5, clutch slave cylinder 2, clutch master cylinder 1 and liquid container 3 are communicated with in turn by liquid-transport pipe-line 11, between liquid container 3 and compensating tank 4, by conduit, be communicated with, one-way valve 7 is installed on conduit, so, between each equipment, has just formed a media flow loop.Meanwhile, between liquid container 3 and compensating tank 4, be also provided with an air conduit 10, for the gas flow between liquid container and compensating tank.Consider that gas must rest on the top of liquid container 3, therefore air conduit 10 is also arranged between liquid container 3 tops and compensating tank 4 tops, and in like manner, vent 9 is arranged on the top of compensating tank 4, correspondingly, oil pump is communicated with the bottom of compensating tank 4 by liquid-transport pipe-line 11.So just make gas enter the top of compensating tank 4 from the top of liquid container 3, directly from vent 9, discharge, can not enter in the medium in compensating tank 4, guarantee the completeness of exhaust.The setting of vent 9, can provide great convenience for exhaust, repair shop, user or automobile making manufacturer, when repairing or change master cylinder, wheel cylinder, pipeline or during maintenance, can be realized and automatically be got rid of the air in whole system by this device, very convenient.
As shown in Fig. 4 or Fig. 5, in order to prevent that medium is back in compensating tank when clutch or hydraulic braking sytem are normally worked, on clutch slave cylinder 2, connecting bolt is installed, in order to replace bleeder screw of the prior art, and safety check 8 is installed on connecting bolt, clutch slave cylinder 2 connects liquid-transport pipe-line 11 by this safety check 8, is communicated with oil pump 5.Specifically, safety check mainly contains three kinds: ball valve, outlet valve and solenoid valve, during actual use, can choose any one kind of them, and by connecting bolt, be arranged on the bleeder screw position of clutch slave cylinder or brake cylinder.Safety check 8 mainly by valve body 13 and, spool 14 and spring 15 form; On connecting bolt 12, outside thread is set, inside establish central through bore, on valve body 13, be provided with internal thread, match with the outside thread on connecting bolt 12, on the central shaft of valve body 13, offer a through hole, one end bore is larger, and the other end bore is less, for convenience of description, be referred to as heavy caliber through hole and small-bore through hole.Spool 14 and spring 15 are arranged in heavy caliber through hole, and wherein spool 14 is near small-bore through hole, and the diameter of spool 14 is greater than the path length of small-bore through hole, are subject to the restriction of small-bore through hole, to prevent that it from coming off away from small-bore through hole.Spring 15 one end and spool 14 are fixing, and the other end is fixed on the madial wall of valve body 13, and spool 14 can move freely in heavy caliber through hole.When the medium in compensating tank 4 arrives safety check 8 place by liquid-transport pipe-line 11 under the effect of electric oil pump 5, spool is formed to impact force, make spool Compress Spring, spool moves to the direction of spring, now, heavy caliber through hole and small-bore through hole are interconnected, and medium enters clutch slave cylinder 2 by safety check 8; And when clutch or hydraulic braking sytem are normally worked, the impact force that driving medium produces towards small-bore through hole spool 14, under the effect of spring return function power, make spool support small-bore through hole simultaneously, passage between heavy caliber through hole and small-bore through hole is blocked, thereby reach the object that prevents medium back flow.
The level sensor 6 being arranged on liquid container 3 sidewalls is connected with supravasal one-way valve 7, and controls the switch of one-way valve.When driving medium in liquid container 3 is very few, level sensor 6 can automatically be controlled one-way valve 7 and supplement in time driving mediums; Medium in compensating tank 4, under the effect of oil pump 5, enters clutch slave cylinder 2 by liquid-transport pipe-line 11, and then reaches in liquid container 3 from clutch master cylinder 1; And because clutch master cylinder 1 and the link position of liquid container 3 are positioned at the bottom of liquid container 3, therefore, medium is inevitable enter liquid container from master cylinder 1, makes the liquid level in liquid container 3 increase; Be positioned at the air on liquid container 3 tops after being subject to the impact of liquid storage pot liquid increase, can only enter compensating tank 4 from air conduit 10, then from vent 9, discharge.Along with the lasting rising of liquid level in liquid container, when in liquid container, liquid level is higher than liquid level in compensating tank, unnecessary driving medium is just back to compensating tank by conduit.
The present invention need not change the clutch actuation system of existing automobile, only to increase on the basis of existing technology a small amount of equipment, can realize the automatic vent of clutch actuation system, convenient, simple, quick, safety, and in non-exhaust process, clutch actuation system is normally worked, and can not be affected, creative apparent.
As shown in Figure 2, the present embodiment be take hydraulic braking sytem list wheel cylinder vehicle, and as example, the present invention will be described, and itself and embodiment's 1 difference is, brake cylinder comprises front wheel cylinder and rear wheel cylinder, on front wheel cylinder and rear wheel cylinder, be respectively arranged with connecting bolt, safety check is all installed on connecting bolt; Braking overall pump is divided into master cylinder ante-chamber and master cylinder back cavity, and described front wheel cylinder is communicated with liquid container and master cylinder ante-chamber respectively, and then wheel cylinder is communicated with liquid container and master cylinder back cavity respectively.From oil pump liquid-transport pipe-line out, be connected with the safety check on rear wheel cylinder with wheel cylinder respectively, identical with embodiment 1 as for the setting between liquid container, compensating tank, oil pump, do not repeat them here.
The exhaust process of the present embodiment is identical with embodiment 1, oil pump is opened, medium in compensating tank through liquid-transport pipe-line be transported to front wheel cylinder and after wheel cylinder, enter respectively again ante-chamber and the back cavity of braking overall pump, then by two liquid-transport pipe-lines, enter liquid container, make the liquid level in liquid container increase, in media flow process, in each section of pipeline, front wheel cylinder, rear wheel cylinder and braking overall pump, gas all enters liquid container under the promotion of medium, and arrive the upper space of liquid container, finally by air conduit, enter compensating tank, from vent, discharge.
As shown in Figure 3, the present embodiment be take the two wheel cylinder vehicles of hydraulic braking sytem, and as example, the present invention will be described, its principle and exhaust process are all identical with embodiment 2, difference is only that brake cylinder is different, because brake cylinder belongs to prior art, the not design innovation point of this technology, and this technology does not need to change brake cylinder, therefore no longer repeats said process herein.
The present invention can be applied in hydraulic braking sytem equally, the automatic vent of attainment brake hydraulic pressure system.It should be noted that, by above-described embodiment, can find out, the present invention goes for various clutch actuation system, can both realize safely, conveniently, efficiently automatic vent, can't affect the normal work of clutch actuation system, its use value and market prospects are very high.
Above-described embodiment is only the preferred embodiments of the present invention, and not limiting the scope of the invention, adopts design principle of the present invention in every case, and carries out non-creativeness work on this basis and the variation made, within all should belonging to protection scope of the present invention.