CN100577485C - Electrically controlled trailer brake valve - Google Patents
Electrically controlled trailer brake valve Download PDFInfo
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- CN100577485C CN100577485C CN200510043373A CN200510043373A CN100577485C CN 100577485 C CN100577485 C CN 100577485C CN 200510043373 A CN200510043373 A CN 200510043373A CN 200510043373 A CN200510043373 A CN 200510043373A CN 100577485 C CN100577485 C CN 100577485C
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Abstract
The present invention provides an electric control brake valve for a trailer, which comprises a double pipeline type brake valve and an electromagnetic control valve, wherein the electromagnetic control valve is fixedly connected with the double pipeline type brake valve. The present invention is characterized in that the present invention is additionally provided with a load sensor; the output end of the load sensor is connected with a power supply end of the load sensor; two air passages are arranged on the side wall of the double pipeline type brake valve body; a vacuum prevention chamber and the electromagnetic control valve are communicated by the gas outlet passage; an output cavity D and the electromagnetic control valve are communicated by the gas inlet passage. The load sensor is used for sensing whether the trailer has heavy load or not. During empty load brake, the output ratio of the brake valve is controlled about 1 to 1, and thus, the present invention solves the problem of the locking and tail whipping phenomena of the trailer caused by high brake force, decreases the wearing capacity of trailer tyres, and ensures the traveling brake safety in empty load of the automobile. During heavy load brake, the present invention can output unequal brake force with the increased pressure force of 30% to 50%, enhance brake time in dot brake or half brake, guarantee traveling brake safety in heavy load of the automobile, automatically adjust brake pneumatic pressure, and have the advantages of high sensitivity, good operating performance and good stability. This invention provides a braking valve for electric control trailer, which includes dual circuit braking valve and other fixing connection electromagnetic control valves, characterized in that it has a charging transformer, the output end of the valve connects with the power end of the charging transformer, the outer of the valve at the dual circuit braking valve opens two gas channel, one interconnects the gas channel of the vacuum volume shelter E and the electromagnetic control valve, the other interconnects the gas channel of the output volume D and the electromagnetic control valve. This invention induces if the trailer overloads by load transformer, when empty load braking, the output ratio of the braking valve is about 1 to 1, which solves the problem that the trailer locks and breaks caused by high braking power, and decreases the abrasion of the trailer' s tyre, and ensures the security of running braking when the car is empty; when braking with burden, it can make the output pressure power increase by 30%-50%, and improve the braking time of dot braking or half braking , and ensure the security of running braking, and adjust the braking pressure automatically.
Description
Technical field
The invention provides a kind of electrically controlled trailer brake valve, belong to the automobile brake technical field.
Background technology
Along with China's express highway backbone network basically forms, large-tonnage, goods carrying vehicle and long wheelbase superimposed trailer, trailer with obvious ton-kilomiter cost advantage also increase year by year.Its wheelbase increases, and brake piping also extends accordingly, and to the long wheelbase vehicle of running at high speed, reflection time lag, the braking force deficiency of air braking system remain subject matter.At the problems referred to above, existing improved at present technology report, as Chinese patent communique invention disclosed patent in 22 days February nineteen ninety-five: the auto trailer brake application magnet valve, the patent No.: 93231149, August 15 calendar year 2001 the invention disclosed patent: the auto trailer electric-control auxiliary brake device, the patent No.: 00250157, October 3 calendar year 2001 the invention disclosed patent: the dual circuit trailer braking valve, the patent No.: on March 3rd, 00256834 and 2005 the invention disclosed patent: new type pressurized multiple-effect dual circuit trailer braking valve, the patent No.: 200420000417.X, its common same design defect that exists is: only pay attention to how solving braking time lag, braking is felt like jelly, brake asynchronous, reduce problems such as stopping distance, after having ignored the braking force raising, the trailer locking that causes because of braking force is too high at unloaded glancing impact and fall tail existing to, and increased the Tyte Wear amount of trailer.Also too early because of the trailer braking protection valve time, influenced car load in the adhesion condition between unloaded glancing impact tire and the ground and stability of under various deceleration situations, braking and service brake safety.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can overcome above-mentioned defective, automatically regulate the electrically controlled trailer brake valve of braking pressure, highly sensitive, excellent working performance, good stability.Its technology contents is:
Comprise dual circuit brake valve and captive joint solenoid electric valve with it, it is characterized in that: set up load transducer, its mouth is carried the power end of lotus sensor, on the valve body side ancient piece of jade, round, flat and with a hole in its centre of dual circuit brake valve, offer two air flues, article one, be communicated with the gas off-take of vacuum chamber prevention E and solenoid electric valve, another is communicated with the inlet channel of output cavity D and solenoid electric valve.
Described electrically controlled trailer brake valve, solenoid electric valve adopts the normal opened type solenoid electric valve, comprise the solenoid valve seat of captiveing joint with valve body, afterbody has the permanent seat that the hollow valve rod of exhaust duct and suit and screw thread are fixed on the valve rod afterbody, wherein have mutual disconnected gas off-take and inlet channel in the solenoid valve seat, the head end of valve rod is captiveed joint with solenoid valve seat, fixed valve plug and movable valve plug are installed in the valve rod successively, the centre of fixed valve plug and cylindrical both sides are provided with vertical air flue, and the air flue of the head end of the vertical air flue in the middle of being positioned on inlet channel and body wall connected output cavity D, movable valve plug is clamped between the tail end of fixed valve plug and hollow valve rod, its two ends are equipped with sealing surface corresponding to the vertical air flue that is positioned at the centre of fixed valve plug and the exhaust duct of hollow valve rod afterbody, movable valve plug cylindrical one side is provided with vertical air flue, the contiguous fixed valve plug end of movable valve plug is provided with the hole, be provided with the push rod of pocketed springs in the hole, when the solenoid electric valve no power, the head end of push rod leans out the movable valve plug end face and fixed valve plug contacts, gapped between movable valve plug and the fixed valve plug end face, the exhaust duct sealing of the sealing surface of movable valve plug other end and hollow valve rod afterbody, logical vacuum chamber prevention E is successively through air flue, gas off-take in the solenoid valve seat, vertical air flue of fixed valve plug cylindrical both sides, the middle air flue of fixed valve plug, inlet channel in the solenoid valve seat, another air flue on the body wall is connected output cavity D, when solenoid electric valve is switched on, the head end withdrawal movable valve plug end face of push rod, seal between movable valve plug and the fixed valve plug end face, logical vacuum chamber prevention E is successively through air flue, gas off-take in the solenoid valve seat, vertical air flue of fixed valve plug cylindrical, vertical air flue of movable valve plug cylindrical, the exhaust duct of hollow valve rod afterbody connects atmosphere.
Described electrically controlled trailer brake valve, solenoid electric valve is the normally closed solenoid electric valve, comprise the solenoid valve seat of captiveing joint with valve body, afterbody has the permanent seat that the hollow valve rod of exhaust duct and suit and screw thread are fixed on the valve rod afterbody, wherein have mutual disconnected gas off-take and inlet channel in the solenoid valve seat, fixed valve plug and movable valve plug are installed in the valve rod successively, the centre of fixed valve plug and cylindrical both sides are provided with vertical air flue, and the head end of the vertical air flue in the middle of being positioned at is successively through inlet channel, air flue in the body wall is connected output cavity D, movable valve plug is clamped between the tail end of fixed valve plug and hollow valve rod, its two ends are equipped with sealing surface corresponding to the vertical air flue of the centre of fixed valve plug and the exhaust duct of hollow valve rod afterbody, the cylindrical of movable valve plug is set with spring, movable valve plug cylindrical one side is provided with vertical air flue, when the solenoid electric valve no power, movable valve plug is sealing under the effect of spring force and between the fixed valve plug end face, logical vacuum chamber prevention E is successively through air flue, gas off-take in the solenoid valve seat, vertical air flue of fixed valve plug cylindrical, the vertical air flue of movable valve plug cylindrical and the exhaust duct of hollow valve rod afterbody connect atmosphere, when solenoid electric valve is switched on, movable valve plug overcomes spring force and the fixed valve plug end face breaks away from, the exhaust duct sealing of the sealing surface of movable valve plug other end and hollow valve rod afterbody, logical vacuum chamber prevention E is successively through air flue, gas off-take in the solenoid valve seat, vertical air flue of fixed valve plug cylindrical both sides, the central longitudinal of fixed valve plug is to air flue, inlet channel in the solenoid valve seat, another air flue on the body wall is connected output cavity D.
Described electrically controlled trailer brake valve, dual circuit brake valve comprises valve body and from up to down is installed in the interior relay piston of valve body successively, two-diameter piston and emergency piston assembly, wherein the diameter ladder of two-diameter piston successively decreases, its stepped outer wall and valve seal constitute vacuum chamber prevention E, relay piston correspondence and valve body, the upper surface of two-diameter piston constitutes control chamber C and control chamber G respectively, constitute output cavity D between the lower surface of two-diameter piston and the emergency piston assembly, and valve body is corresponding to control chamber C, control chamber G is provided with admission port, be provided with the hand brake valve admission port corresponding to output cavity D, the emergency piston assembly comprises into valve seat, sealing, valve spring, valve, emergency piston, wherein the outer ancient piece of jade, round, flat and with a hole in its centre notch cuttype of emergency piston is outwards outstanding, its upper surface and valve body constitute hand brake valve control chamber B through seal ring, and its lower surface and valve body constitute source of the gas chamber A through seal ring.
Described electrically controlled trailer brake valve, dual circuit brake valve comprises valve body and from up to down is installed in the interior two-diameter piston of valve body successively, emergency piston assembly and diaphragm, wherein the diameter ladder of two-diameter piston successively decreases, its stepped outer wall and valve seal constitute vacuum chamber prevention E, its upper surface and valve body constitute control chamber C, its lower surface and emergency piston assembly constitute output cavity D, the lower surface of emergency piston assembly and valve body form source of the gas chamber A, the upper surface of diaphragm and valve body constitute hand brake valve control chamber B, its lower surface and valve body constitute control chamber G, and valve body is corresponding to control chamber C, control chamber G is provided with admission port, is provided with the hand brake valve admission port corresponding to control chamber B.The emergency piston assembly comprises into valve seat, sealing surface, valve spring, valve, emergency piston, wherein the outer ancient piece of jade, round, flat and with a hole in its centre notch cuttype of emergency piston is outwards outstanding seals through seal ring with valve body, its lower surface and valve body constitute source of the gas chamber A through seal ring, and diaphragm is fixed on the valve seat through the nut suit.
Described electrically controlled trailer brake valve, in each parts assembling place that constitutes source of the gas chamber A, control chamber B, control chamber C, output cavity D, vacuum chamber prevention E, control chamber G, and offer the inlet channel that is communicated with solenoid electric valve, the both sides of gas off-take on the valve body side ancient piece of jade, round, flat and with a hole in its centre, be provided with seal ring.
Described electrically controlled trailer brake valve, the sensing element of load transducer adopts elastic rod, contacts with suspension.
Described electrically controlled trailer brake valve, the exhaust duct of valve body end terminal and hollow valve rod afterbody exhaust duct is provided with the noise reduction dust boot.
Its principle of work is:
(1), solenoid electric valve is the normal opened type solenoid electric valve.When vehicle is in the Parking state, the air receiver atmospheric pressure of trailer braking valve enters emergency piston source of the gas chamber A from the admission port of trailer braking valve, moving on the emergency piston assembly under the effect of atmospheric pressure, open valve, source of the gas chamber A atmospheric pressure enters into output cavity D and exports from air extractor duct, and this moment, vehicle was in the braking during standstill state.Chaufeur was opened hand brake valve when vehicle was prepared to start to walk to travel, and hand brake valve air extractor duct pressure enters into the top of trailer braking valve emergency piston (diaphragm).Promote emergency piston (diaphragm) and move down under the application force of hand brake valve output pressure power, make the valve Exhaust Open, the pressure exhaust to atmosphere of output cavity D is removed braking during standstill.The sensing element of load transducer contacts with suspension when vehicle is in driving states, and under a certain size load, sensing element has definite position, promptly passes through the directly deflection of the distortion decision sensing element of the suspension system of reflection axle load size.(1) unloaded glancing impact, the deflection of suspension is little, and sensing element is not stressed, and electromagnetic valve is not worked, and the push rod head end that the contiguous fixed valve plug end of movable valve plug is set with spring leans out the movable valve plug end face and fixed valve plug contacts, and between fixed valve plug and the movable valve plug certain clearance is arranged.The control air pressure in the upper and lower chamber of master cylinder enters in control chamber C, the G of trailer braking valve simultaneously, and promotion two-diameter piston and relay piston (perhaps diaphragm) move down opens valve.The atmospheric pressure of source of the gas chamber A enters into output cavity D and exports from air extractor duct, a part enters in the vacuum chamber prevention E by vertical air flue of the gap between middle air flue, fixed valve plug and the movable valve plug of the inlet channel in the solenoid valve seat, fixed valve plug, fixed valve plug cylindrical both sides successively by the air flue on the output cavity D sidewall, make the upper and lower end face air pressure balance of two-diameter piston, export than being controlled at about 1: 1 service brake safety when having improved the automobile zero load.(2) heavily loaded glancing impact: the deflection of suspension increases, sensing element distortion, the signal control normally open type magnetic valve work that load transducer is gathered according to sensing element.The control air pressure in the upper and lower chamber of master cylinder enters in control chamber C, the G of trailer braking valve simultaneously, and promotion two-diameter piston and relay piston (perhaps diaphragm) move down opens valve.The atmospheric pressure of source of the gas chamber A enters into output cavity D and exports from air extractor duct, and a part enters the middle air flue of fixed valve plug successively by the inlet channel in the solenoid valve seat by the air flue on the output cavity D sidewall.Because this moment, electromagnetic valve was in energising work, movable valve plug overcomes the application force and the sealing of fixed valve plug sealing surface of push rod and push rod spring under the effect of electromagnetic force, sealed the gas circuit that the air pressure of output cavity D enters vacuum chamber prevention, gas off-take in solenoid valve seat of the exhausr port sealing surface disengaging of the other end of movable valve plug and valve stem end simultaneously, the atmospheric pressure that makes vacuum chamber prevention E, air flue, movable valve plug cylindrical air flue and the electromagnetic valve exhausr port of fixed valve plug cylindrical both sides communicate with atmosphere.This moment two-diameter piston last operative end surface greater than descending operative end surface, the pressure ratio of so just having amplified control chamber and output cavity has increased two-diameter piston to open valve clearance and time, makes the atmospheric pressure of output cavity D be higher than the atmospheric pressure of the control chamber of master cylinder.Service brake safety when the braking force that output pressure increase 30%-50% is not waited has improved the automobile heavy duty.The control air pressure of the relay piston of trailer braking valve and two-diameter piston upper surface (or lower surface of diaphragm) is from total pump exhaust inlet exhaust to atmosphere during brake off, relay piston moves simultaneously up and down, the valve Exhaust Open, the air pressure of output cavity D is from valve exhausr port exhaust to atmosphere.And no matter any brake piping sudden failure in the upper and lower chamber of master cylinder can both ensure the braking force of trailer, ensures the service brake safety.
(2), solenoid electric valve is the normally closed solenoid electric valve.(1) unloaded glancing impact, the deflection of suspension is little, sensing element is not stressed, but load transducer control solenoid electric valve energising work, the movable valve plug of solenoid electric valve overcomes the application force of pull back spring and the exhausr port sealing of valve stem end under the effect of electromagnetic force, produce the gap between fixed valve plug and the movable valve plug.The control air pressure in the upper and lower chamber of master cylinder enters in control chamber C, the G of trailer braking valve simultaneously, and promotion two-diameter piston and relay piston (perhaps diaphragm) move down opens valve.The atmospheric pressure of source of the gas chamber A enters into output cavity D and exports from air extractor duct, another air flue on vertical air flue of a part by the gap between middle air flue, fixed valve plug and the movable valve plug of the inlet channel of the air flue on the output cavity D sidewall in solenoid valve seat, fixed valve plug, fixed valve plug cylindrical both sides, gas off-take, the body wall enters in the vacuum chamber prevention E, make the upper and lower end face air pressure balance of two-diameter piston, export than being controlled at about 1: 1 service brake safety when having improved the automobile zero load.(2) heavily loaded glancing impact: the deflection of suspension increases, the sensing element distortion, and load transducer is according to the circuit of the signal cut solenoid electric valve of sensing element collection.The control air pressure in the upper and lower chamber of master cylinder enters in control chamber C, the G of trailer braking valve simultaneously, and promotion two-diameter piston and relay piston (perhaps diaphragm) move down opens valve.A part enters the middle air flue of fixed valve plug successively by the air flue on the output cavity D sidewall by the inlet channel in the solenoid valve seat.Because this moment, solenoid electric valve was in the no power state, movable valve plug seals the sealing surface of fixed valve plug under the spring force application force of spring, sealed the gas circuit that master cylinder cavity of resorption control air pressure enters vacuum chamber prevention E, the exhausr port of the other end of movable valve plug and valve stem end breaks away from simultaneously, and gas off-take, the air flue of fixed valve plug cylindrical both sides, the cylindrical air flue of movable valve plug and the exhausr port of valve stem end of atmospheric pressure in solenoid valve seat of vacuum chamber prevention E communicated with atmosphere.This moment two-diameter piston last operative end surface greater than under operative end surface, the pressure ratio of so just having amplified control chamber and output cavity has increased two-diameter piston and has opened valve clearance and time, makes the atmospheric pressure of output cavity D be higher than the atmospheric pressure of the control chamber of master cylinder.Service brake safety when the braking force that output pressure increase 30%-50% is not waited has improved the automobile heavy duty.The control air pressure of the upper surface of the relay piston of trailer braking valve and two-diameter piston during brake off (or lower surface of diaphragm) is from total pump exhaust inlet exhaust to atmosphere, relay piston moves simultaneously up and down, the valve Exhaust Open, the air pressure of output cavity D is from valve exhausr port exhaust to atmosphere.And no matter any brake piping sudden failure in the upper and lower chamber of master cylinder can both ensure the braking force of trailer, ensures the service brake safety.
Whether the present invention compared with prior art, heavily loaded by load transducer induction trailer.Unloaded glancing impact, the output ratio of brake activation valve is controlled at about 1: 1, has solved the trailer locking that causes because of braking force is too high and has fallen the tail phenomenon, has reduced the Tyte Wear amount of trailer, has ensured service brake safety when automobile is unloaded; The heavy duty glancing impact can make output pressure power increase the braking force that 30%-50% does not wait, the braking time when improving some braking or semi-brake, service brake safety when having improved the automobile heavy duty.Overcome prior art because of the trailer braking protection valve time too early, influenced the defective of car load in the adhesion condition between unloaded glancing impact tire and the ground and stability of under various deceleration situations, braking and service brake safety, and can automatically regulate braking pressure, highly sensitive, excellent working performance, good stability.
Description of drawings
Fig. 1 be dual circuit brake valve among the present invention birds-eye view and with the interconnecting wiring diagram of solenoid electric valve, load transducer;
Fig. 2 is the A-A section-drawing of dual circuit brake valve and solenoid electric valve thereof among the embodiment shown in Figure 1;
Fig. 3 is the part B-B section-drawing of dual circuit brake valve among the embodiment shown in Figure 1;
Fig. 4 is the A-A section-drawing of dual circuit brake valve and solenoid electric valve thereof in another embodiment of the present invention.
1, dual circuit brake valve 2, solenoid electric valve 3, binding post 4, electric wire 5, load transducer 6, sensing element pull back spring 7, air extractor duct 8,9,16,17 admission ports 10, relay piston 11, two- diameter piston 12,23,24 air flues 13, seal ring 14, valve seat 15, sealing surface 18, emergency piston 19, valve spring 20, valve 21, valve body 22,32 exhaust ducts 25, solenoid valve seat 26, inlet channel 27, fixed valve plug 28, vertical air flue 29, coil 30, movable valve plug 31, valve rod 33, dust boot 34, retentive base 36,41 springs 37, push rod 38, pressing plate 39, screw 40, gas off-take 41, diaphragm 42, nut
The specific embodiment
In the embodiment shown in Fig. 1～3: solenoid electric valve 2 adopts the normal opened type solenoid electric valve to captive joint with dual circuit brake valve 1, and the sensing element 6 of load transducer 5 adopts elastic rod, contacts the power end of its output termination solenoid electric valve 2 with suspension.Relay piston 10 from up to down is installed in the valve body 21 of dual circuit brake valve 1 successively, two-diameter piston 11 and emergency piston assembly, wherein the diameter ladder of two-diameter piston 11 successively decreases, its stepped outer wall and valve body 21 sealings constitute vacuum chamber prevention E, relay piston 10 corresponding and valve bodies 21, the upper surface of two-diameter piston 11 constitutes control chamber C and control chamber G respectively, constitute output cavity D between the lower surface of two-diameter piston 11 and the emergency piston assembly, and valve body 21 is corresponding to control chamber C, control chamber G is provided with admission port 17,9, be provided with hand brake valve admission port 16 corresponding to output cavity D, the emergency piston assembly comprises into valve seat 14, sealing surface 15, valve spring 19, valve 20, emergency piston 18, wherein the outer ancient piece of jade, round, flat and with a hole in its centre notch cuttype of emergency piston 18 is outwards outstanding, its upper surface and valve body 21 constitute hand brake valve control chamber B through seal ring 13, and its lower surface and valve body 21 constitute source of the gas chamber A through seal ring 13.Offer air flue 23 and air flue 24 on valve body 21 side ancient piece of jade, round, flat and with a hole in its centres, wherein air flue 24 is communicated with the gas off-take 40 of vacuum chamber prevention E and solenoid electric valve 2, and air flue 23 is communicated with the inlet channel 26 of output cavity D and solenoid electric valve 2.Solenoid electric valve 2 comprises the solenoid valve seat 25 of captiveing joint with valve body 21, afterbody has the permanent seat 34 that the hollow valve rod 31 of exhaust duct and suit and screw thread are fixed on valve rod 31 afterbodys, wherein have mutual disconnected gas off-take 40 and inlet channel 26 in the solenoid valve seat 25, the head end of valve rod 31 is captiveed joint with solenoid valve seat 25, fixed valve plug 27 and movable valve plug 30 are installed in the valve rod 31 successively, the centre of fixed valve plug 27 and cylindrical both sides are provided with vertical air flue 28, and central longitudinal is connected output cavity D to the air flue 23 of head end on inlet channel 26 and valve body 21 sidewalls of air flue 28, movable valve plug 30 is clamped between the tail end of fixed valve plug 27 and hollow valve rod 31, its two ends are equipped with sealing surface 35 corresponding to the central longitudinal of fixed valve plug 27 to the exhaust duct 32 of air flue 28 and hollow valve rod 31 afterbodys, movable valve plug 30 cylindricals one side is provided with vertical air flue 28, movable valve plug 30 contiguous fixed valve plug 27 ends are provided with the hole, be provided with the push rod 37 of pocketed springs 36 in the hole, when solenoid electric valve 2 no powers, the head end of push rod 37 leans out movable valve plug 30 end faces and fixed valve plug 27 contacts, gapped between movable valve plug 30 and fixed valve plug 27 end faces, the sealing surface 35 of movable valve plug 30 other ends and 32 sealings of the exhaust duct of hollow valve rod 31 afterbodys, vacuum chamber prevention E is successively through air flue 24, gas off-take 40 in the solenoid valve seat 25, vertical air flue 28 of fixed valve plug 27 cylindrical both sides, the central longitudinal of fixed valve plug 27 is to air flue 28, inlet channel 26 in the solenoid valve seat 25, another air flue 23 on valve body 21 sidewalls is connected output cavity D, when solenoid electric valve 2 energisings, head end withdrawal movable valve plug 30 end faces of push rod 37, seal between movable valve plug 30 and fixed valve plug 27 end faces, vacuum chamber prevention E is successively through air flue 24, gas off-take 40 in the solenoid valve seat 25, vertical air flue 28 of fixed valve plug 27 cylindricals, vertical air flue 28 of movable valve plug 30 cylindricals, the exhaust duct 32 of hollow valve rod 31 afterbodys connects atmosphere.In each parts assembling place that constitutes source of the gas chamber A, control chamber B, control chamber C, output cavity D, vacuum chamber prevention E, control chamber G, and offer the inlet channel 26 that is communicated with solenoid electric valve 2, the both sides of gas off-take 40 on the valve body 21 side ancient piece of jade, round, flat and with a hole in its centres, be provided with seal ring 13.
At a same substantially embodiment of embodiment shown in Figure 4, just solenoid electric valve 2 is the normally closed solenoid electric valve, dual circuit brake valve comprises valve body 21 and from up to down is installed in two-diameter piston 11 in the valve body 21 successively, emergency piston assembly and diaphragm 41, wherein the diameter ladder of two-diameter piston 11 successively decreases, its stepped outer wall and valve body 21 sealings constitute vacuum chamber prevention E, its upper surface and valve body 21 constitute control chamber C, its lower surface and emergency piston assembly constitute output cavity D, the outer ancient piece of jade, round, flat and with a hole in its centre notch cuttype of emergency piston 18 is outwards outstanding in the emergency piston assembly seals through seal ring 13 with valve body 21, its lower surface and valve body 21 constitute source of the gas chamber A through seal ring 13, the upper surface of diaphragm 41 and valve body 21 constitute hand brake valve control chamber B, its lower surface and valve body 21 constitute control chamber G, and valve body 21 is corresponding to control chamber C, control chamber G is provided with admission port 17,9, be provided with hand brake valve admission port 16 corresponding to control chamber B.Offer air flue 23 and air flue 24 on valve body 21 side ancient piece of jade, round, flat and with a hole in its centres, wherein air flue 24 is communicated with the gas off-take 40 of vacuum chamber prevention E and solenoid electric valve 2, and air flue 23 is communicated with the inlet channel 26 of output cavity D and solenoid electric valve 2.Solenoid electric valve 2 comprises the solenoid valve seat 25 of captiveing joint with valve body 21, afterbody has the permanent seat 34 that the hollow valve rod 31 of exhaust duct 32 and suit and screw thread are fixed on valve rod 31 afterbodys, wherein have mutual disconnected gas off-take 40 and inlet channel 26 in the solenoid valve seat 25, fixed valve plug 27 and movable valve plug 30 are installed in the valve rod 31 successively, the centre of fixed valve plug 27 and cylindrical both sides are provided with vertical air flue 28, and central longitudinal to the head end of air flue 28 successively through inlet channel 26, air flue 23 in valve body 21 sidewalls is connected output cavity D, movable valve plug 30 is clamped between the tail end of fixed valve plug 27 and hollow valve rod 31, its two ends are equipped with sealing surface 35 corresponding to the central longitudinal of fixed valve plug 27 to the exhaust duct 32 of air flue 28 and hollow valve rod 31 afterbodys, the cylindrical of movable valve plug 30 is set with spring 41, movable valve plug 30 cylindricals one side is provided with vertical air flue 28, when solenoid electric valve 2 no powers, movable valve plug 30 is sealing under the effect of spring force and between fixed valve plug 27 end faces, logical vacuum chamber prevention E is successively through air flue 24, gas off-take 40 in the solenoid valve seat 25, vertical air flue 28 of fixed valve plug 27 cylindricals, the exhaust duct 32 of vertical air flue 28 of movable valve plug 30 cylindricals and hollow valve rod 31 afterbodys connects atmosphere, when solenoid electric valve 2 energisings, movable valve plug 30 overcomes spring force and fixed valve plug 27 end faces break away from, the sealing surface 35 of movable valve plug 30 other ends and 32 sealings of the exhaust duct of hollow valve rod 31 afterbodys, logical vacuum chamber prevention E is successively through air flue 24, gas off-take 40 in the solenoid valve seat 25, vertical air flue 28 of fixed valve plug 27 cylindrical both sides, the central longitudinal of fixed valve plug 27 is to air flue 28, inlet channel 26 in the solenoid valve seat 25, another air flue 23 on valve body 21 sidewalls is connected output cavity D.
Claims (10)
1, a kind of electrically controlled trailer brake valve, comprise dual circuit brake valve (1) and captive joint solenoid electric valve (2) with it, it is characterized in that: set up load transducer (5), the power end of its output termination solenoid electric valve (2), on valve body (21) the side ancient piece of jade, round, flat and with a hole in its centre of dual circuit brake valve (1), offer two air flues (23), (24), article one, be communicated with the gas off-take (40) of vacuum chamber prevention (E) and solenoid electric valve (2), another is communicated with the inlet channel (26) of output cavity (D) and solenoid electric valve (2).
2, electrically controlled trailer brake valve as claimed in claim 1, it is characterized in that: solenoid electric valve (2) adopts the normal opened type solenoid electric valve, comprise the solenoid valve seat (25) of captiveing joint with the valve body (21) of dual circuit brake valve (1), afterbody has the permanent seat (34) that the hollow valve rod (31) of exhaust duct (32) and suit and screw thread are fixed on valve rod (31) afterbody, wherein have mutual disconnected gas off-take (40) and inlet channel (26) in the solenoid valve seat (25), the head end of valve rod (31) is captiveed joint with solenoid valve seat (25), fixed valve plug (27) and movable valve plug (30) are installed in the valve rod (31) successively, the centre of fixed valve plug (27) and cylindrical both sides are provided with vertical air flue (28), and the air flue (23) of the head end of the vertical air flue (28) in the middle of being positioned on inlet channel (26) and valve body (21) sidewall connected output cavity (D), movable valve plug (30) is clamped between the tail end of fixed valve plug (27) and hollow valve rod (31), its two ends are equipped with sealing surface (35) corresponding to the vertical air flue (28) that is positioned at the centre of fixed valve plug (27) and the exhaust duct (32) of hollow valve rod (31) afterbody, movable valve plug (30) cylindrical one side is provided with vertical air flue (28), the contiguous fixed valve plug of movable valve plug (30) (27) end is provided with the hole, be provided with the push rod (37) of pocketed springs (36) in the hole, when solenoid electric valve (2) no power, the head end of push rod (37) leans out movable valve plug (30) end face and fixed valve plug (27) contacts, gapped between movable valve plug (30) and fixed valve plug (27) end face, the sealing surface (35) of movable valve plug (30) other end seals with the exhaust duct (32) of hollow valve rod (31) afterbody, logical vacuum chamber prevention (E) is successively through air flue (24), gas off-take (40) in the solenoid valve seat (25), vertical air flue (28) of fixed valve plug (27) cylindrical both sides, the central longitudinal of fixed valve plug (27) is to air flue (28), inlet channel (26) in the solenoid valve seat (25), another air flue (23) on valve body (21) sidewall is connected output cavity (D), when solenoid electric valve (2) is switched on, head end withdrawal movable valve plug (30) end face of push rod (37), seal between movable valve plug (30) and fixed valve plug (27) end face, logical vacuum chamber prevention (E) is successively through air flue (24), gas off-take (40) in the solenoid valve seat (25), vertical air flue (28) of fixed valve plug (27) cylindrical, vertical air flue (28) of movable valve plug (30) cylindrical, the exhaust duct (32) of hollow valve rod (31) afterbody connects atmosphere.
3, electrically controlled trailer brake valve as claimed in claim 1, it is characterized in that: solenoid electric valve (2) is the normally closed solenoid electric valve, comprise the solenoid valve seat (25) of captiveing joint with valve body (21), afterbody has the permanent seat (34) that the hollow valve rod (31) of exhaust duct (32) and suit and screw thread are fixed on valve rod (31) afterbody, wherein have mutual disconnected gas off-take (40) and inlet channel (26) in the solenoid valve seat (25), fixed valve plug (27) and movable valve plug (30) are installed in the valve rod (31) successively, the centre of fixed valve plug (27) and cylindrical both sides are provided with vertical air flue (28), and the head end of the vertical air flue (28) in the middle of being positioned at is successively through inlet channel (26), air flue (23) in valve body (21) sidewall is connected output cavity (D), movable valve plug (30) is clamped between the tail end of fixed valve plug (27) and hollow valve rod (31), its two ends are equipped with sealing surface (35) corresponding to the vertical air flue (28) of the centre of fixed valve plug (27) and the exhaust duct (32) of hollow valve rod (31) afterbody, the cylindrical of movable valve plug (30) is set with spring (41), movable valve plug (30) cylindrical one side is provided with vertical air flue (28), when solenoid electric valve (2) no power, movable valve plug (30) is sealing under the effect of spring force and between fixed valve plug (27) end face, logical vacuum chamber prevention (E) is successively through air flue (24), gas off-take (40) in the solenoid valve seat (25), vertical air flue (28) of fixed valve plug (27) cylindrical, the exhaust duct (32) of vertical air flue (28) of movable valve plug (30) cylindrical and hollow valve rod (31) afterbody connects atmosphere, when solenoid electric valve (2) is switched on, movable valve plug (30) overcomes spring force and fixed valve plug (27) end face breaks away from, the sealing surface (35) of movable valve plug (30) other end seals with the exhaust duct (32) of hollow valve rod (31) afterbody, and logical vacuum chamber prevention (E) is successively through air flue (24), gas off-take (40) in the solenoid valve seat (25), vertical air flue (28) of fixed valve plug (27) cylindrical both sides, the central longitudinal of fixed valve plug (27) is to air flue (28), inlet channel (26) in the solenoid valve seat (25), another air flue (23) on the body wall is connected output cavity (D).
4, electrically controlled trailer brake valve as claimed in claim 1, it is characterized in that: dual circuit brake valve comprises valve body (21) and from up to down is installed in the interior relay piston (10) of valve body (21) successively, two-diameter piston (11) and emergency piston assembly, wherein the diameter ladder of two-diameter piston (11) successively decreases, its stepped outer wall and valve body (21) sealing constitute vacuum chamber prevention (E), corresponding and the valve body (21) of relay piston (10), the upper surface of two-diameter piston (11) constitutes control chamber (C) and control chamber (G) respectively, constitute output cavity (D) between the lower surface of two-diameter piston (11) and the emergency piston assembly, and valve body (21) is corresponding to control chamber (C), control chamber (G) is provided with admission port (17), (9), be provided with hand brake valve admission port (16) corresponding to output cavity (D), the outer ancient piece of jade, round, flat and with a hole in its centre of emergency piston assembly forms hand brake valve control chamber (B) and source of the gas chamber (A) with valve body (21) respectively.
5, electrically controlled trailer brake valve as claimed in claim 4, it is characterized in that: the emergency piston assembly comprises into valve seat (14), sealing surface (15), valve spring (19), valve (20), emergency piston (18), wherein the outer ancient piece of jade, round, flat and with a hole in its centre notch cuttype of emergency piston (18) is outwards outstanding, its upper surface and valve body (21) constitute hand brake valve control chamber (B) through seal ring (13), and its lower surface and valve body (21) constitute source of the gas chamber (A) through seal ring (13).
6, electrically controlled trailer brake valve as claimed in claim 1, it is characterized in that: dual circuit brake valve comprises valve body (21) and from up to down is installed in the interior two-diameter piston (11) of valve body (21) successively, emergency piston assembly and diaphragm (41), wherein the diameter ladder of two-diameter piston (11) successively decreases, its stepped outer wall and valve body (21) sealing constitute vacuum chamber prevention (E), its upper surface and valve body (21) constitute control chamber (C), its lower surface and emergency piston assembly constitute output cavity (D), the lower surface of emergency piston assembly and valve body (21) form source of the gas chamber (A), wherein the upper surface of diaphragm (41) and valve body (21) constitute hand brake valve control chamber (B), its lower surface and valve body (21) constitute control chamber (G), and valve body (21) is corresponding to control chamber (C), control chamber (G) is provided with admission port (17), (9), be provided with hand brake valve admission port (16) corresponding to control chamber (B).
7, electrically controlled trailer brake valve as claimed in claim 6, it is characterized in that: the emergency piston assembly comprises into valve seat (14), sealing surface (15), valve spring (19), valve (20), emergency piston (18), wherein the outer ancient piece of jade, round, flat and with a hole in its centre notch cuttype of emergency piston (18) is outwards outstanding seals through seal ring (13) with valve body (21), its lower surface and valve body (21) constitute source of the gas chamber (A) through seal ring (13), and diaphragm (41) is fixed on the valve seat (14) through nut (42) suit.
8, as claim 4 or 6 described electrically controlled trailer brake valves, it is characterized in that: in each parts assembling place that constitutes source of the gas chamber (A), control chamber (B), control chamber (C), output cavity (D), vacuum chamber prevention (E), control chamber (G), and offer the inlet channel (26) that is communicated with solenoid electric valve (2), the both sides of gas off-take (40) on valve body (21) the side ancient piece of jade, round, flat and with a hole in its centre, be provided with seal ring (13).
9, electrically controlled trailer brake valve as claimed in claim 1 is characterized in that: the sensing element (6) of load transducer (5) adopts elastic rod, contacts with suspension.
10, as claim 1 or 2 or 3 described electrically controlled trailer brake valves, it is characterized in that: the exhaust duct (22) of valve body (21) end terminal and hollow valve rod (31) afterbody exhaust duct (32) is provided with noise reduction dust boot (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510043373A CN100577485C (en) | 2005-04-20 | 2005-04-20 | Electrically controlled trailer brake valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510043373A CN100577485C (en) | 2005-04-20 | 2005-04-20 | Electrically controlled trailer brake valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1699097A CN1699097A (en) | 2005-11-23 |
| CN100577485C true CN100577485C (en) | 2010-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510043373A Expired - Fee Related CN100577485C (en) | 2005-04-20 | 2005-04-20 | Electrically controlled trailer brake valve |
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| Country | Link |
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| CN (1) | CN100577485C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5302504B2 (en) * | 2006-12-01 | 2013-10-02 | ナブテスコ株式会社 | Multi-protection valve |
| CN102358276B (en) * | 2011-07-20 | 2014-05-14 | 瑞立集团瑞安汽车零部件有限公司 | Integrated antilock brake system (ABS) regulator, vehicle air brake system and vehicle |
| CN104477159B (en) * | 2014-11-28 | 2017-07-28 | 王汉峰 | Pressure automatic switch combined type brake valve |
| CN107901901B (en) * | 2017-12-05 | 2023-10-17 | 南京九鑫汽车部件科技有限公司 | Multifunctional regulating emergency brake valve |
| CN108146414B (en) * | 2018-01-05 | 2023-06-27 | 温州瑞立科密汽车电子有限公司 | Electronic parking valve with proportional output and control method |
| CN108407789B (en) * | 2018-05-16 | 2024-01-09 | 吉林大学 | Automatic emergency air pressure braking device |
| CN109466529A (en) * | 2018-12-17 | 2019-03-15 | 南阳理工学院 | Agricultural traction engine trailer diaphragm type air brake valve device |
-
2005
- 2005-04-20 CN CN200510043373A patent/CN100577485C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1699097A (en) | 2005-11-23 |
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