CN2099047U - Power assistance of air-pressure brake for automobile wheels - Google Patents
Power assistance of air-pressure brake for automobile wheels Download PDFInfo
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- CN2099047U CN2099047U CN 91214078 CN91214078U CN2099047U CN 2099047 U CN2099047 U CN 2099047U CN 91214078 CN91214078 CN 91214078 CN 91214078 U CN91214078 U CN 91214078U CN 2099047 U CN2099047 U CN 2099047U
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Abstract
The utility model relates to a power assistance of an air-pressure brake for automobile wheels, which is provided with an electromagnetic valve comprising an air passage; the electromagnetic valve is provided with a left and a right valve bodies of an air-in and air-out opening; the left and the right valve bodies are communicated with the air passage; the left and the right valve bodies are fixedly connected into a whole; an electromagnetic coil is arranged in the left valve body; a push rod with holes can move left and right and is arranged in the electromagnetic coil; an air-out valve, an air-in valve and a spring of the air-in valve clamped between the air-in valve and an end cover with a hole are successively arranged in the valve body. Under the action of the push rod with a hole and the spring of the air-in valve, the valve-out valve and the air-in valve generate displacement; thus, the air passage is opened or closed; the switching on or the switching off of the electromagnetic valve is controlled by an electronic controller.
Description
The utility model relates to a kind of compression air brake formula anti-locking device for automotive wheel that can prevent compression air brake formula automobile glancing impact wheel lockup and sideslip.
As everyone knows, the height and the adhesion value between ground and wheel of the length of automobile brake distance and the size of braking force, initial velocity are closely related, and under the certain situation of braking force and initial velocity, adhesion value is big more, and stopping distance is short more.But locking phenomenon often appears in compression air brake formula automobile wheel in the process of braking easily, be that wheel stops operating, and slide on the ground, the localized hyperthermia that wheel is produced when sliding on the ground, make wheel and the ground-surface contact position part " desaturation " that is heated cause adhesion value to descend, the stopping distance that makes automobile is not the shortest.Accompanying drawing 1 has provided vertically, the side direction adhesion value is with the change curve of sliding ratio (being the different braking degree).As seen from the figure, vertically the OA section of adhesion value curve is bordering on straight line, and adhesion value increases rapidly with the increase of sliding ratio, when sliding ratio has peak adhesion coefficient φ P during for 15-20%, sliding ratio increases again, then adhesion value descends, and the vertical adhesion value φ S when sliding ratio S=100% is less, and braking force is not maximum, thereby stopping distance is not the shortest, and the side direction adhesion value is zero at this moment, and wheel is easy to break away, and can not guarantee the directional balance of braking.Desirable brake system should be able to prevent that wheel is by locking, automatically guarantee in sliding ratio is the scope of 15-20%, to work, can utilize peak adhesion coefficient φ P, obtain maximum braking force and the shortest stopping distance, and also have bigger side direction adhesion value this moment, can bear bigger side force and unlikely sideslip, to obtain the directional balance of good glancing impact.
The harmfulness of breakking away is very big, the sideslip of trailing wheel particularly, and harmfulness is more serious, and it not only aggravates Tyte Wear, but also may cause the collision of automobile, and the top is multiple and overturn.
Therefore the purpose of this utility model is to provide a kind of compression air brake formula anti-locking device for automotive wheel, it can cut off or connect the braking gas circuit automatically according to the rotating speed of wheel, can regulate arbitrarily it is worked in best sliding ratio scope, so the utility model can prevent effectively that wheel is by locking, thereby obtain maximum brake efficiency and the shortest stopping distance, and also have bigger side direction adhesion value this moment, bigger side force can be born and unlikely sideslip, the directional balance of good glancing impact can be obtained.
The utility model relates to a kind of compression air brake formula anti-locking device for automotive wheel, has electromagnetic valve, electromagnetic valve comprises the band air passage and has advancing of communicating with air passage, the left side of exhausr port, right valve barrel, a left side, right valve barrel is connected by attaching parts, magnet coil is arranged in the left valve barrel, having in the magnet coil can be left, right reciprocating push rod with holes, one end is housed in the air passage of right valve barrel successively is inserted in the interior blow off valve of air inlet valve, its inside have the air inlet valve of air extractor vent and be stuck in air inlet valve and the perforate end cap between inlet valve spring, under the effect of push rod with holes and inlet valve spring, blow off valve and air inlet valve will produce displacement, thereby open or close air passage, the energising of electromagnetic valve or outage are by electronic controller controls.
The distance of the left and right motion of above-mentioned push rod is controlled by seal ring and push rod spring, seal ring is enclosed within that its outside face matches with the air passage of right valve barrel on the push rod with holes, the right-hand member of seal ring is located by the step on the air passage, institute's perforate is pilot hole and the deflation hole that communicates with it on the push rod with holes, push rod spring is contained on the push rod with holes and opens in the pilot hole, the left end of push rod spring is by the location, left part of left valve barrel, and binding post also is equipped with in the left part, and binding post connects magnet coil by lead.
Above-mentioned perforate end cap is contained in the right-hand member of right valve barrel, and adopt with right valve barrel and to be threaded, the hole of being opened on the perforate end cap is an induction opening, communicate with the air flue of opening on the right valve barrel, the excrescence of making one with blow off valve be housed successively in the air extractor vent of air inlet valve, steel ball and inching valve spring, the with holes lid location of inching valve spring by matching with air inlet valve with holesly covers institute's perforate and communicates with air extractor vent on the air inlet valve.
Above-mentioned electronic controller comprises integrated package NE555, import preset voltage by the voltage division circuit that potential device W1 and resistance R 1 are formed to 2 pin of integrated package NE555, the preset voltage value is regulated by W1, import trigger voltage by the trigger circuit that micromotor G and resistance R 2 are formed to 2 pin of integrated package NE555, trigger voltage value is relevant with the speed of wheel, the voltage division circuit of being made up of potential device W2 is to the 5 pin input control voltages of integrated package NE555, the control magnitude of voltage is regulated by potential device W2, voltage stabilizer 7812 links to each other with 8 pin of integrated package NE5555, one end of voltage stabilizer 7812 connects direct supply by K switch, other end ground connection, also and be connected to cond C1,3 pin of integrated package NE555 are to the mouth outgoing current that is made of diode D1 and relay J on it.During electronic controller work, when trigger voltage ten presets input voltage＞control voltage, by the next power supply impassabitity integrated package NE555 of 8 pin of integrated package NE555, so relay J can not be worked, open the contact, and power supply is cut off to the circuit of electromagnetic valve, when trigger voltage ten presets input voltage＜control voltage, exported by 3 pin by the power supply that 8 pin of integrated package NE555 are next, relay coil obtains electric current and produces suction and the adhesive contact, makes the circuit connection of power supply to electromagnetic valve.
The utlity model has following advantage:
1, the traffic accident that takes place because of sideslip of annual automobile is many, if calculate by 1/1000 ratio, and 2000 yuan of automotive average losses, area, a Chengdu hundreds of thousands of car will lose hundreds of thousands of unit in 1 year.
2, installed and on average prolong 2000 kilometers per 100,000 kilometers of service life of tire of this device, 50 running cars just can be saved 6 cover tires for 100,000 kilometers so, and 1 overlaps tire by 500 yuan, can save 3000 yuan altogether.
3, productive costs of the present utility model can not be higher than 40.00 yuan, and it is lower to produce cost in enormous quantities.
4, simple in structure, easy for installation, the transformation and the new design that are easy to promote, be applicable to existing automobile of the utility model.
The change curve that Fig. 1 automobile longitudinal, side direction adhesion value change with sliding ratio.
Structural representation under Fig. 2 electromagnetic valve "on" position.
Structural representation under Fig. 3 electromagnetic valve off-position
The structural representation of Fig. 4 electronic controller
The scheme circuit of Fig. 5 electronic controller
Fig. 6 installation site of the present utility model block scheme.
An embodiment of the present utility model is as follows:
As accompanying drawing 2, shown in 3, electromagnetic valve 1 comprises a left side, right valve barrel 2,3, left valve barrel 2 is a cylinder, have through hole in it, the left part of left valve barrel 2 has and the extraneous hole that communicates, be deflation hole 4, right valve barrel 3 also is a cylinder, the inside of right valve barrel 3 has air passage 5 with the level, the right-hand member of right valve barrel 3 communicates with the external world and is admission port, it is the air passage outlet that the bottom has with the extraneous hole that communicates, a left side, right valve barrel 2,3 are fixed with one by screw 7, magnet coil 8 is housed in the left valve barrel 2, magnet coil 8 is made up of the cylindrical iron core coil outer with being wrapped in iron core, having in the magnet coil 8 can be left, right reciprocating push rod 9 with holes, institute's perforate is pilot hole 10 and deflation hole 11 on the push rod 9 with holes, push rod spring 12 is housed in the pilot hole 10, the left end of push rod spring 12 is by the location, left part of left valve barrel 2, the left part also is equipped with binding post 13 by nut, binding post 13 connects magnet coil 8 by lead, on push rod 9 with holes, be with seal ring 14, air passage 5 in the outside face of seal ring 14 and the right valve barrel 3 matches, the right-hand member of seal ring 14 is by the location of the step on the air passage 5, and push rod spring 12 and seal ring 14 are controlled push rod with holes 9 left sides, the distance of right motion.Push rod 9 with holes moves to left and will close air passage 5 and open deflation hole 11, moves to right and will close deflation hole and open air passage.One end is housed in the air passage 5 of right valve barrel 3 successively is inserted in the interior blow off valve 15 of air inlet valve, its inside have the air inlet valve 16 of air extractor vent and be stuck in air inlet valve 16 and perforate end cap 18 between inlet valve spring 19, under the effect of push rod 9 with holes and inlet valve spring 19, blow off valve 15 and air inlet valve 16 will produce displacement, thereby open or close air passage 5, perforate end cap 18 is contained in the right-hand member of right valve barrel 3, be threaded with right valve barrel 3 employings, the hole of being opened on the perforate end cap 18 is an induction opening 20, it communicates with the air flue of opening 5 on the right valve barrel 3, the excrescence 21 of making one with blow off valve 15 is housed in the air extractor vent 17 of air inlet valve 16 successively, steel ball 22 and inching valve spring 23, with holes lid 24 location of inching valve spring 23 by matching with air inlet valve 16, institute's perforate communicates with air extractor vent 17 on the air inlet valve 16 on the lid 24 with holes.
Shown in attached Figure 4 and 5, electronic controller 25 comprises integrated package 26, the voltage division circuit of being made up of potential device 27 and resistance 28 38 presets input voltage to the 2 pin input of integrated package 26, presetting input voltage value is regulated by potential device 27, import trigger voltage by the trigger circuit 39 that micromotor 29 and resistance 30 are formed to 2 pin of integrated package 26, trigger voltage value is relevant with the speed of wheel transmission, the voltage division circuit of being made up of potential device 31 40 is to 5 pin input control voltages of integrated package 26, the control magnitude of voltage is regulated by potential device 31, voltage stabilizer 32 joins with 8 pin of integrated package 26, one end of voltage stabilizer 32 is by switch 33 power connections 34, the other end ground connection of voltage stabilizer 32, on it and be connected to cond 35,3 pin of integrated package 26 are to the mouth outgoing current that is made of diode 36 and relay 37.Above-mentioned integrated package 26, potential device 27 and resistance 28, resistance 30, voltage stabilizer 32, cond 35, diode 36 and relay 37 are installed concentratedly in a box body 41, the lid 45 that matches is with it arranged at box body 41 tops, and switch 33, indicator lamp 42 also are housed on the lid 45, indicator lamp 42 is connected between voltage division circuit 40 and the relay 37, source terminal of electric power 46 also is housed on the lid 45, trigger voltage binding post 47 and output wiring terminal 48, output wiring terminal 48 is connected with the mouth of electronic controller by lead.
As shown in Figure 6, induction opening 20 on the electromagnetic valve 1 is connected by the master brake cylinder 43 of pipeline with compression air brake formula automobile, air passage outlet 6 is connected with the brake cylinder 44 of compression air brake formula automobile, the source terminal of electric power 46 of electronic controller 25 connects direct supply 34 by lead, output wiring terminal 48 connects binding post 13 on the electromagnetic valve 1 by lead, micromotor 29 is installed on the rotary part of automotive wheel, the fast trigger voltage height of wheel, the slow trigger voltage of wheel is low, and micromotor 29 is connected with trigger voltage binding post 47 and connecting resistance 30 by lead.When vehicle is made brake snub under steam, wheel is not by (trigger voltage＞control voltage) under the situation of locking, the relay 37 of electronic controller 25 is not worked, electromagnetic valve 1 no current, push rod 9 with holes is closed deflation hole 11 earlier under the effect of push rod spring 12, and then the pressure that overcomes the inching valve spring is pushed steel ball 22 open and is made air extractor vent 17 unimpeded, and then the pressure that overcomes inlet valve spring 19 is pushed air inlet valve 16 open, blow off valve 15, make the gas circuit unimpeded (referring to Fig. 3) of master brake cylinder 43 to brake cylinder 44, the braking degree of this moment depends on the operation of chaufeur fully.Work as emergency braking, during wheel locking soon, relay 37 work of (trigger voltage＜control voltage) electronic controller 25, electromagnetic valve obtains electric current, and push rod 9 with holes overcomes push rod spring 12 under the magnetic action of magnet coil 8 pressure retreats, and closes blow off valve 15 earlier and closes air inlet valve 16 again, and cut-out air extractor vent 17, then open row pore 11 is cut off (referring to Fig. 2) by master brake cylinder 43 to the gas circuit of brake cylinder 44, and the braking degree of this moment is controlled by electronic controller 25.Because the air pressure of brake cylinder 44 reduces, vehicle wheel rotational speed is accelerated (trigger voltage＞control voltage), relay 37 opens circuit, the magnetic force push rod 9 with holes that disappears is pushed steel ball 22 again open, this moment, master brake cylinder 43 had difference of pressure in the air chamber of the gas circuit of electromagnetic valve 1 and brake cylinder 44, have only when the air pressure of brake cylinder 44 and push rod spring 12 with power greater than master brake cylinder 43 air pressure and inlet valve spring 19 with power the time could and then push air inlet valve 16 open, if the suction quantity of pushing open behind the steel ball 22 just makes wheel decelerates to trigger voltage＜control voltage, push rod with holes just can not have been pushed air inlet valve 16 open again, it can only retreat closes air extractor vent 17, and push rod 9 with holes is just with this crank motion.Vehicle wheel rotational speed is higher than the controlling point just increases braking pressure, and vehicle wheel rotational speed is lower than the controlling point and just reduces braking pressure, and the rotating speed of wheel is worked within the limits prescribed.Braking is removed, this moment, vehicle wheel rotational speed was accelerated (trigger voltage＞control voltage), electromagnetic valve 1 no current, push rod 9 with holes is pushed steel ball 22 and air inlet valve 16 again open, make master brake cylinder 43 unimpeded to the gas circuit of brake cylinder 44, the air pressure of brake cylinder 44 is through the exhausr port exhaust to atmosphere of electromagnetic valve 1 by master brake cylinder 43, and braking is removed.
The utility model can also overcome automotive wheel effectively and skid, and its principle of work is as follows:
When the automobile off hind wheel skids, it is the off hind wheel high speed revolution, left rear wheel is motionless, at this moment chaufeur is being stepped on brake pedal, step on acceleration pedal again, the braking force of this moment is only had an effect (trigger voltage of off hind wheel＞control voltage) can not have an effect to left rear wheel (trigger voltage of left rear wheel＜control voltage) to off hind wheel, thereby the power major part of driving engine all distributes to left rear wheel, makes automobile roll the point of slippage smoothly away from.
Claims (5)
1, a kind of compression air brake formula anti-locking device for automotive wheel, has electromagnetic valve, it is characterized in that electromagnetic valve comprises the band air passage and has advancing of communicating with air passage, the left side of exhausr port, right valve barrel, a left side, right valve barrel is connected by attaching parts, magnet coil is arranged in the left valve barrel, having in the magnet coil can be left, right reciprocating push rod with holes, one end is housed in the air passage of right valve barrel successively is inserted in the interior blow off valve of air inlet valve, its inside have the air inlet valve of air extractor vent and be stuck in air inlet valve and the perforate end cap between inlet valve spring, under the effect of push rod with holes and inlet valve spring, blow off valve and air inlet valve will produce displacement, thereby open or close air passage, the energising of electromagnetic valve or outage are by electronic controller controls.
2, compression air brake formula anti-locking device for automotive wheel according to claim 1, it is characterized in that a described push rod left side, the distance of right motion is controlled by seal ring and push rod spring, seal ring is enclosed within that its outside face matches with the air passage of right valve barrel on the push rod with holes, the right-hand member of seal ring is located by the step on the air passage, institute's perforate is pilot hole and the deflation hole that communicates with it on the push rod with holes, push rod spring is contained on the push rod with holes and opens in the pilot hole, the left end of push rod spring is by the location, left part of left valve barrel, binding post also is equipped with in the left part, and binding post connects magnet coil by lead.
3, compression air brake formula anti-locking device for automotive wheel according to claim 1 and 2, it is characterized in that described perforate end cap is contained in the right-hand member of right valve barrel, and adopt with right valve barrel and to be threaded, the hole of being opened on the perforate end cap is an induction opening, communicate with the air flue of opening on the right valve barrel, the excrescence of making one with blow off valve is housed in the air extractor vent of air inlet valve successively, steel ball and inching valve spring, the with holes lid location of inching valve spring by matching with air inlet valve with holesly covers institute's perforate and communicates with air extractor vent on the air inlet valve.
4, compression air brake formula anti-locking device for automotive wheel according to claim 1 and 2, it is characterized in that described electronic controller comprises integrated package NE555, import preset voltage by the voltage division circuit that potential device W1 and resistance R 1 are formed to 2 pin of integrated package NE555, the pre-value magnitude of voltage is regulated by W1, import trigger voltage by the trigger circuit that micromotor G and resistance R 2 are formed to 2 pin of integrated package NE555, trigger voltage value is relevant with the speed of wheel, the voltage division circuit of being made up of potential device W2 is to the 5 pin input control voltages of integrated package NE555, the control magnitude of voltage is regulated by potential device W2, voltage stabilizer 7812 joins with 8 pin of integrated package NE555, one end of voltage stabilizer 7812 connects direct supply by K switch, other end ground connection, also and be connected to cond C1,3 pin of integrated package NE555 are to the mouth outgoing current that is made of diode D1 and relay J on it.
5, compression air brake formula anti-locking device for automotive wheel according to claim 3, it is characterized in that described electronic controller comprises integrated package NE555, import preset voltage by the voltage division circuit that potential device W1 and resistance R 1 are formed to 2 pin of integrated package NE555, the preset voltage value is regulated by W1, import trigger voltage by the trigger circuit that micromotor G and resistance R 2 are formed to 2 pin of integrated package NE555, trigger voltage value is relevant with the speed of wheel, the voltage division circuit of being made up of potential device W2 is to the 5 pin input control voltages of integrated package NE555, the control magnitude of voltage is regulated by potential device W2, voltage stabilizer 7812 links to each other with 8 pin of integrated package NE555, one end of voltage stabilizer 7812 connects direct supply by K switch, other end ground connection, also and be connected to cond C1,3 pin of integrated package NE555 are to the mouth outgoing current that is made of diode D1 and relay J on it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91214078 CN2099047U (en) | 1991-01-22 | 1991-01-22 | Power assistance of air-pressure brake for automobile wheels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91214078 CN2099047U (en) | 1991-01-22 | 1991-01-22 | Power assistance of air-pressure brake for automobile wheels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2099047U true CN2099047U (en) | 1992-03-18 |
Family
ID=4922322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91214078 Withdrawn CN2099047U (en) | 1991-01-22 | 1991-01-22 | Power assistance of air-pressure brake for automobile wheels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2099047U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501848A (en) * | 2011-11-03 | 2012-06-20 | 芜湖众发汽车制动系统有限公司 | Rear braking cylinder internally provided with proportional valve |
| CN110949352A (en) * | 2019-11-25 | 2020-04-03 | 山东管理学院 | Integrated electronic hydraulic brake booster unit |
-
1991
- 1991-01-22 CN CN 91214078 patent/CN2099047U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501848A (en) * | 2011-11-03 | 2012-06-20 | 芜湖众发汽车制动系统有限公司 | Rear braking cylinder internally provided with proportional valve |
| CN110949352A (en) * | 2019-11-25 | 2020-04-03 | 山东管理学院 | Integrated electronic hydraulic brake booster unit |
| CN110949352B (en) * | 2019-11-25 | 2021-10-29 | 山东管理学院 | Integrated electronic hydraulic brake booster unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |