CN203363191U - Differential pressure type electromagnetic valve of large automobile tire central inflating and deflating module type control system - Google Patents

Differential pressure type electromagnetic valve of large automobile tire central inflating and deflating module type control system Download PDF

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Publication number
CN203363191U
CN203363191U CN 201320290104 CN201320290104U CN203363191U CN 203363191 U CN203363191 U CN 203363191U CN 201320290104 CN201320290104 CN 201320290104 CN 201320290104 U CN201320290104 U CN 201320290104U CN 203363191 U CN203363191 U CN 203363191U
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China
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valve
seat
rod
port
spring
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Expired - Fee Related
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CN 201320290104
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Chinese (zh)
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蒋洪雷
蒋友丁
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蒋洪雷
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Abstract

The utility model discloses a differential pressure type electromagnetic valve of a large automobile tire central inflating and deflating module type control system. A pressure sensor, a differential pressure type inlet valve, a differential pressure type vent valve and a plurality of differential pressure type bridge control valves are arranged on a base, an air inlet duct, an air outlet duct and bridge type air pipelines which are communicated with the bridge control valves respectively are arranged in the base, and the differential pressure type electromagnetic valve can be in the normally-closed condition or the normally-open condition. A valve seat is arranged in a concave cavity of the base. A valve rod, a valve plate, a spring seat and a bottom cover are arranged in the valve seat from top to bottom, and an assisting spring is arranged in the spring seat. The portion, above the upper end face of the valve seat, of the concave cavity is an air inlet cavity, the portion, below the upper end face of the valve seat, of the concave cavity is a working cavity, the diameter of the portion, extending out of an valve opening, of the upper portion of the valve rod is larger than the diameter of the valve opening, the diameter of the portion, inserted into the working cavity, of the lower portion of the valve rod is smaller than the diameter of the valve opening, and therefore differential pressure exists between the upper portion of the valve rod and the lower portion of the valve rod. The valve rod is connected with the spring seat, and the valve plate is arranged in the middle of the valve rod. No matter how the air pressure in the air inlet cavity or the air pressure in the working cavity changes, and no matter whether an electromagnetic coil works or not, the valve plate can be pushed to cover or uncover the valve opening under the pushing of the assisting spring so that the valve can return to the normally-closed state or the normally-open state.

Description

The differential solenoid valve of full-sized car central tire inflation/deflation modular type control system
Technical field
The utility model relates to the car accessories field, specifically refers to the differential solenoid valve of a kind of full-sized car central tire inflation/deflation modular type control system.
Background technique
Full-sized car all is equipped with air compressor usually, and the pressurized air of generation is mainly used in the purposes such as air-pressure brake, jettron car door.But, along with the continuous expansion of automobile purposes, pressurized air is widely used in already to tyre inflating.So the full-sized car of manufacturing in recent years all is equipped with Tire Inflation System as military trucks, large engineering vehicle, Container Transport load-carrying vehicle, has realized automatically tire being inflated at any time.Also occur the automated watch-keeping facility of gas charging system for this reason, can change the control wheel air pressure according to tire pressure and Weight Loaded, at some in particular cases, reduced tire pressure.For example tire pressure is too high while blowing out possibly; Automobile during by moorland, ice and snow, desert region tire easily skid when needing to increase tire and contacting with ground; Also have automobile need to enter large-scale cargo transport aircraft and hatch door insufficient height while being obstructed; Military vehicle enters large-scale landing ship Lower Hold and top upper deck when slightly low; When vehicle passes through highly lower bridge tunnel, culvert; During by compare Hua abrupt slope, ground etc.Now, if suitably venting reduces the tire height or suitably increases the surface of contact on tire and ground, above-mentioned difficulties just can overcome, and vehicle can pass through smoothly.But if the venting of tire appropriateness to be relied on to manual operation, the difficulty of its realization is really larger.Around this problem, the patented technology of existing many tire inflation/deflation controls aspect, can operate the inflation/deflation of realizing automobile tire at automobile cab now.As the patent No., be typically the patents such as 200510018654.8 " cross-country vehicle tire central authorities automatic inflatable/air control gear ", the patent No. 200720088085.9 " the central automatic inflatable/air control gear of a kind of medelling cross-country vehicle tire ", they have all solved control tire inflation/deflation problem really preferably.But find after further study, what the common defects of these patented technologies was that control valve opens and closes is two-position two-way solenoid valve, and its working principle is to rely on merely spring push (as Fig. 4) or air pressure to promote the valve block action that (as Fig. 5) realizes carrying out main valve.As the patent No., be relatively typically 200720087832.7 " a kind of automobile tyre central inflation-deflation relay valves " etc.The reliability of this class control valve is not fine in fact, if just in case situations such as " spring is malfunctioning ", " controlling air pressure lost efficacy " occurs, valve just can not recover normal state or original state, be difficult to guarantee that tire pressure changes or remains unchanged.For the existence of this possibility, the applicant has researched and developed a kind of utilization " draught head " for the control valve that valve running power the spring of take are booster action, really can reach " dual fail-safe " safe against all possibilities effect.
Summary of the invention
The utility model will carry out larger improvement to existing vehicle center tyre inflation/deflation control valve, reach just in case the original state of valve occurs can keep in " spring is malfunctioning " or situations such as " controlling air pressure lost efficacy ", guarantee the purpose of solenoid valve energy regular event.
The scheme that the utility model solves the problems of the technologies described above is: the differential solenoid valve of a kind of full-sized car central tire inflation/deflation modular type control system, pressure transducer, suction valve, bleed valve and some bridge control valves to be set on the modular type pedestal, the bridge-type air pipe line of establishing intake duct, air outlet flue and communicating with each bridge control valve in base interior.Described suction valve, bleed valve and bridge control valve are differential solenoid valve, and described differential solenoid valve sets gradually the execution main valve of electromagnetic coil, pilot valve and bottom from top to bottom.Described execution main valve structure is divided into two kinds of open type or normal close types.Described as the open type (see Fig. 2 or Fig. 1 left side analyse and observe place) normally of the execution main valve in the differential solenoid valve of bridge control valve, and as the normal close type (see Fig. 3 or Fig. 1 right side analyse and observe place) normally of the execution main valve in the differential solenoid valve of suction valve, bleed valve.It is, in the concave cavity of pedestal, valve seat is set that described open type is carried out main valve, is provided with successively from top to bottom the valve rod, valve block and the spring seat that controlled by guide piston in described valve seat, is provided with secondary spring in spring seat.Described valve seat is the jacketed type cylinder, and upper-end surface is provided with valve port, and valve seat is provided with bottom below lower end surface.Forming air-inlet cavity between valve seat upper-end surface and guide piston, is active chamber between the bottom surface of valve seat upper-end surface and bottom.Valve port is stretched out on described valve rod top, and its diameter is greater than valve port, and the diameter that valve rod enters the active chamber part is less than valve port, and valve rod is connected with following spring seat.Valve rod is provided with valve block in the bottom surface of stretching out the above major diameter of valve port part, and described valve block can be from the valve port draught excluder mouth that faces down.It is, in the concave cavity of modular type pedestal, valve seat is set equally that described normal close type is carried out main valve, is provided with successively from top to bottom the valve rod, valve block and the spring seat that controlled by guide piston in described valve seat, is provided with secondary spring in spring seat.Described valve seat is the jacketed type cylinder, and upper-end surface is provided with valve port, and valve seat is provided with bottom below lower end surface.Forming air-inlet cavity between upper-end surface and guide piston, is active chamber between the bottom surface of valve seat upper-end surface and bottom.Valve port is stretched out on described valve rod top, and diameter is greater than valve port, and the diameter that valve rod enters the active chamber part is less than valve port.Valve rod is connected with following spring seat, at valve rod and above the spring seat joint, is provided with valve block, described valve block can be from valve port draught excluder mouth facing up.
Described valve block is annular gasket, by tinsel and sheet rubber, is composited, and described tinsel is fixedly connected with valve rod or spring seat.
Be provided with the seal ring that becomes to be sealed and matched with intake duct, air outlet flue around the valve rod top of described execution main valve or bottom.
The utility model is useful: if be carried in suction valve, the air pressure of bleed valve or bridge control valve air-inlet cavity disappears, no matter open type or normal close type, owing to there being all the time pressure air to exist in the active chamber communicated with the automobile tire pipeline, perhaps air-inlet cavity still has in the situation of pressure, but because the valve rod upper diameter is greater than valve port and stem lower portion diameter, according to the relation of pressure size and lifting surface area, (in F=P * S---formula, F is pressure, P is pressure, S is compression area), the tyre inner pressure air pressure to the valve rod upper end or the two-part pressure in lower end exist all the time certain pressure poor, so valve rod still can be with moving valve plate to press to valve port, valve port is sealed or opens, making to carry out main valve restPoses.If after tyre explosion during without gas or tire internal pressure air pressure when low, be not enough to valve rod is promoted to operation, now also have the secondary spring pushing tow, also valve block can be pushed to valve port and make its sealing, make to carry out main valve and restPose, thereby reach the effect of " dual fail-safe ".The differential solenoid valve of the utility model also can singlely arrange, and also can be arranged to as required different normally open valves or normally close valve multiple combination form.
The accompanying drawing explanation
Fig. 1 is that master of the present utility model looks (broken section) figure;
Fig. 2 is the schematic diagram that the utility model open type is carried out main valve (analysing and observe);
Fig. 3 is the schematic diagram that the utility model normal close type is carried out main valve (analysing and observe);
Fig. 4 is the planimetric map of a kind of three bridge tube road control valves of the utility model;
Fig. 5 is that the spring controlled solenoid valve of a kind of simple dependence is carried out main valve (analysing and observe) schematic diagram;
Fig. 6 is that the solenoid valve that a kind of simple dependence air pressure is controlled is carried out main valve (analysing and observe) schematic diagram;
Each title and mark in figure: 1-electromagnetic coil, 2-pilot valve, 3-pedestal, 4-guide piston, 5-valve rod, 6-bottom, 7-valve block, 8-air outlet flue, 9-intake duct, 10-valve port, 11-valve seat, 12-spring seat, 13-secondary spring, 14-bridge control valve, 15-suction valve, 16-bleed valve, 17-pressure transducer.
Embodiment
As shown in Figures 1 to 4, the utility model is the differential solenoid valve of a kind of full-sized car central tire inflation/deflation modular type control system, and its principle is to utilize pressure reduction that pressure air exists up and down to valve rod to carry out the keying of control valve.It is that pressure transducer 17, suction valve 15, bleed valve 16 and some bridge control valves 14 are set on modular type pedestal 3, the bridge-type air pipe line of establishing intake duct 9, air outlet flue 8 in pedestal 3 inside and communicating with each bridge control valve.Suction valve 15, bleed valve 16 and bridge control valve 14 are differential solenoid valve, and its structure is divided into two kinds of open type or normal close types.Described as the open type (see Fig. 2 or Fig. 1 left side analyse and observe place) normally of the execution main valve in the differential solenoid valve of bridge control valve, and as the normal close type (see Fig. 3 or Fig. 1 right side analyse and observe place) normally of the execution main valve in the differential solenoid valve of suction valve 15, bleed valve 16.The execution main valve of described bridge control valve 14 is open type normally, it is, in the concave cavity of modular type pedestal 3, valve seat 11 is set that described open type is carried out main valve, be provided with successively from top to bottom the valve rod 5, valve block 7 and the spring seat 12 that controlled by guide piston 4 in valve seat 11, be provided with secondary spring 13 in spring seat 12.Valve seat 11 is the jacketed type cylinder, and upper-end surface is provided with valve port 10, and valve seat 11 lower end surfaces are provided with bottom 6, between upper-end surface and guide piston 4, forms air-inlet cavity, between the bottom surface of valve seat 11 upper-end surfaces and bottom 6, is active chamber.Valve port 10 is stretched out on valve rod 5 tops, its diameter is greater than valve port 10, and valve rod 5 bottoms enter the active chamber section diameter and are less than valve port 10, and valve rod 5 is connected with following spring seat 12, valve rod 5 is provided with valve block 7 in the bottom surface of stretching out valve port part more than 10, and valve block 7 can be from the valve port 10 draught excluder mouth 10 that faces down.And for the execution main valve of the differential solenoid valve of suction valve 15, bleed valve 16 normal close type normally, equally also, in the concave cavity of modular type pedestal 3, valve seat 11 is set, be provided with successively from top to bottom the valve rod 5, valve block 7 and the spring seat 12 that controlled by guide piston 4 in valve seat 11, be provided with secondary spring 13 in spring seat 12.Valve seat 11 is the jacketed type cylinder, and upper-end surface is provided with valve port 10, and valve seat 11 lower end surfaces are provided with bottom 6, between valve seat 11 upper-end surfaces and guide piston 4, forms air-inlet cavity, between the bottom surface of valve seat 11 upper-end surfaces and bottom 6, is active chamber.Valve port 10 is stretched out on valve rod 5 tops, and diameter is greater than valve port 10, and valve rod 5 bottoms enter the diameter of active chamber part and are less than valve port 10, valve rod 5 is connected with following spring seat 12, different from the bridge control valve 14 of open type just valve blocks 7 are located under the valve port 10 above the joint of valve rod 5 and spring seat 12, and valve block 7 can upwards seal valve port 10 under valve port 10.Be provided with and intake duct 9,8 one-tenth seal rings that are sealed and matched of air outlet flue around valve rod 5 tops of carrying out main valve or bottom, can when valve rod 5 action, seal intake duct 9 or air outlet flue 8.
Below this principle of products and running are described in detail: this product is still controlled by top electromagnetic coil 1 when opening/shutting valve, when operating console sends instruction, press control knob or central control desk and obtain pressure transducer 17 pressure information changing values, electromagnetic coil 1 running, open pilot valve 2, guide piston 4 promotes to carry out the main valve operation, suction valve 15 is opened, the pressure air of coming from air compressor enters intake duct 9 through air pipe line, be charged into automobile tire from the bridge control valve 14 of often opening, realize to tyre inflating.When inflation reaches certain pressure, pressure transducer 17 acquired informations, signal is passed to the pressure switch in control system, electromagnetic coil 1 oppositely operates, pilot valve 2 is closed, cancel to the exerting pressure of suction valve 15 valve rods 5, owing in the pipeline communicated with tire, thering is elevated pressures, make air-inlet cavity also there is equally elevated pressures, be pressed in the upper and lower two-part pressure difference of valve rod 5 and can easily valve block 7 be pressed to valve port 10 by its sealing.And the valve block 7 above the valve port 10 of the bridge control valve 14 of often opening is restPosed valve by jack-up equally.If just in case circuit cuts off the power supply midway, electromagnetic coil 2 is not worked, guide piston 4 can not promote to carry out the main valve operation, but owing to being provided with secondary spring 13 in valve rod 5, and because top has not had pressure, but between upper and lower, pressure reduction adds that the elastic force of secondary spring 13 is enough to valve rod 5 jack-up, valve port 10 is opened or sealed to band moving valve plate 7, can make equally Chang Kai or normally closed execution main valve restPose.
When needs are exitted, when pressure transducer 17 obtains pressure information, change, pilot valve 2 operations are opened in electromagnetic coil 1 energising, and guide piston 4 promotes to carry out main valve, bleed valve 16 is opened to bridge control valve 14, gas pipeline, the bleed valve 16 outside exhaust of tyre inner pressure air through often opening.If just in case circuit cuts off the power supply midway, electromagnetic coil 2 is not worked, guide piston 4 can not promote to carry out the main valve operation, but in pipeline, still have pressure to exist, there is pressure difference between valve rod is Shang Xia 5, adds that the elastic force of secondary spring 13 still can be by valve rod 5 jack-up, band moving valve plate 7 sealing valve ports 10, bleed valve 16 is restPosed, can prevent that after venting in tire, air continues to external leakage.
Even in the situation that bulging of tyre, the tire inner air and outer air becomes normal pressure, because valve rod 5 bottoms are provided with secondary spring 13, still can be by valve rod 5 jack-up, so valve rod 5 still can be with moving valve plate 7 sealings or open valve port 10, valve is restPosed, meanwhile intake duct 9 or air outlet flue 8 are sealed in good time or open.

Claims (3)

1. the differential solenoid valve of full-sized car central tire inflation/deflation modular type control system, that pressure transducer (17) is set on modular type pedestal (3), suction valve (15), bleed valve (16) and some bridge control valves (14), establish intake duct (9) in pedestal (3) inside, air outlet flue (8) and the bridge-type air pipe line communicated with each bridge control valve (14), described suction valve (15), bleed valve (16) and bridge control valve (14) are differential solenoid valve, described differential solenoid valve sets gradually electromagnetic coil (1) from top to bottom, pilot valve (2) and execution main valve, described execution main valve structure is divided into two kinds of normal close type or open types, the described execution main valve as bridge control valve (14) is generally open type, described as suction valve (15), the execution main valve of bleed valve (16) is generally normal close type, it is characterized in that it is that valve seat (11) is set in the concave cavity of pedestal (3) that described open type is carried out main valve, be provided with successively from top to bottom the valve rod (5) that controlled by guide piston (4) in described valve seat (11), valve block (7) and spring seat (12), be provided with secondary spring (13) in spring seat (12), described valve seat (11) is the jacketed type cylinder, upper-end surface is provided with valve port (10), valve seat (11) is provided with bottom (6) under lower end surface, upper-end surface and guide piston form air-inlet cavity between (4), between the bottom surface of valve seat (11) upper-end surface and bottom (6), it is active chamber, valve port (10) is stretched out on described valve rod (5) top, its diameter is greater than valve port (10), valve rod (5) enters the active chamber section diameter and is less than valve port (10), and be connected with spring seat (12), valve rod (5) is provided with valve block (7) in the major diameter part bottom surface of stretching out more than valve port (10), described valve block (7) can face down valve port (10) is sealed from valve port (10), it is that valve seat (11) is set in the concave cavity of pedestal (3) that described normal close type is carried out main valve, be provided with successively from top to bottom the valve rod (5) that controlled by guide piston (4) in described valve seat (11), valve block (7) and spring seat (12), be provided with secondary spring (13) in spring seat (12), described valve seat (11) is the jacketed type cylinder, upper-end surface is provided with valve port (10), valve seat (10) is provided with bottom (6) under lower end surface, upper-end surface and guide piston form air-inlet cavity between (4), between the following and bottom (6) in valve seat (10) upper-end surface, it is active chamber, valve port (10) is stretched out on described valve rod (5) top, and diameter is greater than valve port (10), the diameter that valve rod (5) enters the active chamber part is less than valve port (10), and be connected with spring seat (12), be provided with valve block (7) above joint at valve rod (5) and spring seat (12), described valve block (7) can seal valve port (10) facing up from valve port (10).
2. the differential solenoid valve of full-sized car central tire inflation/deflation modular type control system according to claim 1, the valve block (7) that it is characterized in that described execution main valve is annular gasket, by tinsel and sheet rubber, be composited, described tinsel is fixedly connected with valve rod (5) or spring seat (12)
3. the differential solenoid valve of full-sized car central tire inflation/deflation modular type control system according to claim 1, is characterized in that valve rod (5) top of described execution main valve or bottom are provided with the seal ring that becomes to be sealed and matched with intake duct (9), air outlet flue (8) on every side.
CN 201320290104 2013-05-12 2013-05-12 Differential pressure type electromagnetic valve of large automobile tire central inflating and deflating module type control system Expired - Fee Related CN203363191U (en)

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Application Number Priority Date Filing Date Title
CN 201320290104 CN203363191U (en) 2013-05-12 2013-05-12 Differential pressure type electromagnetic valve of large automobile tire central inflating and deflating module type control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320290104 CN203363191U (en) 2013-05-12 2013-05-12 Differential pressure type electromagnetic valve of large automobile tire central inflating and deflating module type control system

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10612723B2 (en) 2017-02-13 2020-04-07 Goodrich Corporation Solenoid valve for inflation system
US10612677B2 (en) 2017-02-13 2020-04-07 Goodrich Corporation Solenoid valve for inflation system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10612723B2 (en) 2017-02-13 2020-04-07 Goodrich Corporation Solenoid valve for inflation system
US10612677B2 (en) 2017-02-13 2020-04-07 Goodrich Corporation Solenoid valve for inflation system
US11092252B2 (en) 2017-02-13 2021-08-17 Goodrich Corporation Solenoid valve for inflation system

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131225

Termination date: 20170512

CF01 Termination of patent right due to non-payment of annual fee