CN108928191A - Central air-charging and air-discharging system and double type tire for double type tire - Google Patents

Central air-charging and air-discharging system and double type tire for double type tire Download PDF

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Publication number
CN108928191A
CN108928191A CN201810946325.7A CN201810946325A CN108928191A CN 108928191 A CN108928191 A CN 108928191A CN 201810946325 A CN201810946325 A CN 201810946325A CN 108928191 A CN108928191 A CN 108928191A
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CN
China
Prior art keywords
air
radial
valve body
tire
sealed valve
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CN201810946325.7A
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Chinese (zh)
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CN108928191B (en
Inventor
杜伟
路奎松
王威
李金龙
高尊化
李明
沈芳
王秀芳
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Beijing North Chuang Cheng Vehicle Technology Development Co Ltd
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Beijing North Chuang Cheng Vehicle Technology Development Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/001Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)

Abstract

The invention discloses a kind of central air-charging and air-discharging system for double type tire and double type tires, the central air-charging and air-discharging system includes rotary valve, inflation axis, oil-gas sealing device, inflation axis is axially arranged with the first air inlet and the second air inlet, and that inflates axis is radially provided with the first radial air inlet hole being connected to respectively with the first air inlet, the second air inlet, the second radial air inlet hole;The radial direction of rotary valve is respectively equipped with the first radial venthole and the second radial venthole;Oil-gas sealing device is located between rotary valve and inflation axis, forms air cavity between oil-gas sealing device and rotary valve, inflation axis;First air inlet, the second air inlet are respectively communicated with the first radial venthole, the second radial venthole by the air cavity, and the first radial venthole and the second radial venthole pass through the first air supply pipe, the first tire in the second air supply pipe connection double type tire, the second tire respectively.High reliablity of the present invention, it is versatile, inflation/deflation individually can be carried out to each tire.

Description

Central air-charging and air-discharging system and double type tire for double type tire
Technical field
The present invention relates to central tire inflation/deflation technical field more particularly to a kind of central inflation/deflations for double type tire System and double type tire.
Background technique
The truck of heavily loaded military vehicle and large-tonnage, in order to improve single bridge bearing capacity and traveling safety, mostly Using the structure of double type tire.
Vehicle center tyre air-charging and air-discharging system be one kind can while the car is driving or stop when at any time detection and The system for adjusting tire pressure is by this when automobile is in the more complicated road traveling such as desert, grassland, marsh, miriness System can adjust tire pressure in real time.When automobile is in preferable road traveling, vehicle mobility it is more demanding, at this time using should The blowing pressure of tire can be improved in system, reduces the energy loss that tire deforms generation during the motion.Tire pressure mentions Gao Hou, car speed are accordingly just improved, and the temperature that tire generates during exercise is accordingly reduced, and tire uses the longevity Life extends.When road traveling of the automobile in height fluctuating, what the controllable velocity of automobile was subjected to by driver and passenger and vehicle Vibration and impact are limited, and in order to obtain preferable driver comfort, can use the system suitably reduces tire pressure, are improved The cushioning ability of tire.When automobile the soft surfaces such as marsh, meadow when driving, tire pressure can be reduced by the system, The appropriate contact area for increasing tire, reduces the sinkage of tire, improves the adhesion property of tire, so as to increase considerably Tractive force improves the passability of automobile.Therefore, Center Tyre Inflation/Deflation System is wheeled military offroad vehicle and some special vehicles Indispensable configuration.
The central air-charging and air-discharging system of current double type tire mostly uses the same oil gas seal apparatus, when any tire When failure, two tires all be can not work normally.
Therefore it provides a kind of high reliablity, double type wheel versatile, that two tires are independent of each other during inflation/deflation Tire central air-charging and air-discharging system becomes this field urgent problem to be solved.
Summary of the invention
The object of the present invention is to provide a kind of high reliablity, the versatile central inflation/deflation system for double type tire System individually can carry out inflation/deflation to each tire, and two tires are independent of each other during inflation/deflation.
One aspect of the present invention provides a kind of central air-charging and air-discharging system for double type tire, including rotary valve, fills Gas axis, oil-gas sealing device, the inflation axis are axially arranged with the first air inlet and the second air inlet, the radial direction of the inflation axis Equipped with the first radial air inlet hole, the second radial air inlet hole being connected to respectively with first air inlet, the second air inlet;The rotation The radial direction of rotary valve body is respectively equipped with the first radial venthole and the second radial venthole;The oil-gas sealing device is located at the rotation Between rotary valve body and the inflation axis, air cavity is formed between the oil-gas sealing device and the rotary valve, the inflation axis; First air inlet, the second air inlet are respectively communicated with the described first radial venthole, the second radial ventilation by the air cavity Hole, the described first radial venthole and the second radial venthole pass through the first air supply pipe, the second air supply pipe connection double type wheel respectively First tire, the second tire in tire.
Another aspect of the present invention provides a kind of double type tire, including first tire, the second tire, knuckle, wheel side And above-mentioned central air-charging and air-discharging system, the knuckle are placed on the outside on the wheel side, the central air-charging and air-discharging system fills The inner wall of gas axis is installed on the outer wall on the wheel side.
Using the central air-charging and air-discharging system and double type tire of aforementioned aspect of the present invention, can independently be filled for single tire It deflates, even if one of tyre explosion or damage, the normal use of another ipsilateral tire will not be influenced, may be used also Think intact tire inflation/deflation, have stronger versatility, greatly improve vehicle under battlefield or limiting condition can By property.
Detailed description of the invention
For the above and other advantages and features that the present invention is further explained, with reference to the accompanying drawing to of the invention specific Embodiment is described in further detail.The attached drawing together with following detailed description include in the present specification and Form a part of this specification.The element of function and structure having the same is denoted with the same reference numerals.It should be appreciated that These attached drawings only describe typical case of the invention, and are not to be taken as the restriction to the scope of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the central air-charging and air-discharging system of an embodiment of the present invention;
Fig. 2 is in Fig. 1 be first tire inflation oil-gas sealing device partial enlarged view;
Fig. 3 is in Fig. 1 be the second tyre inflating oil-gas sealing device partial enlarged view;
Fig. 4 is the schematic diagram of the section structure that axis is inflated in Fig. 1;
Fig. 5 is the schematic diagram of the first sealed valve body in Fig. 2, Fig. 3;
Fig. 6 is the schematic diagram of the second sealed valve body in Fig. 2, Fig. 3;
Fig. 7 is the schematic diagram of third sealed valve body in Fig. 2, Fig. 3.
Wherein, in Fig. 1-Fig. 7:
First tire 1;First air supply pipe 2;Knuckle 3;Oil-gas sealing device 4;Inflate axis 5;Take turns side 6;Rotary valve 7; First thrust bearing 8;Second thrust bearing 9;Second air supply pipe 10;Second tire 11;First air inlet 12;First oil sealing 13; First sealing gland 14;First sealed valve body 15;End cap 16;First O-ring 17;Second air inlet 18;Second O-ring 19;Second is close Seal valve body 20;Third O-ring 21;Third sealed valve body 22;4th O-ring 23;Third oil sealing 24;Third sealing gland 25;Left side Two sealing glands 26;The second sealing gland of right side 27;First radial venthole 28;Second radial venthole 29;Second oil pocket 30;Second air cavity 31;First air cavity 32;First oil pocket 33;First radial slot 34;Second radial slot 35.
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, below in conjunction with attached drawing to this hair It is bright to be further detailed.
Fig. 1-Fig. 7 is please referred to, Fig. 1 is a kind of structural representation for central air-charging and air-discharging system that an embodiment of the present invention provides Figure;Fig. 2 is in Fig. 1 be first tire inflation oil-gas sealing device partial enlarged view;It is that the second tire fills that Fig. 3, which is in Fig. 1, The partial enlarged view of the oil-gas sealing device of gas;Fig. 4 is the schematic diagram of the section structure that axis is inflated in Fig. 1;Fig. 5 is in Fig. 2, Fig. 3 The schematic diagram of first sealed valve body;Fig. 6 is the schematic diagram of the second sealed valve body in Fig. 2, Fig. 3;Fig. 7 is that third is close in Fig. 2, Fig. 3 Seal the schematic diagram of valve body.
As shown in Figure 1, the central air-charging and air-discharging system for double type tire of one embodiment of the present invention includes rotary valve Body 7, inflation axis 5, oil-gas sealing device 4, rotary valve 7 and inflation axis 5 can be annular in shape.Double type wheel in present embodiment Tire includes first tire 1, the second tire 11, knuckle 3, wheel side 6, and the knuckle 3 is placed on the outside on the wheel side 6.Specifically Embodiment in, rotary valve 7 can be sleeved on knuckle 3 and wheel side 6 on, rotary valve 7 be sleeved on inflation axis 5 outside, There is the space for installing oil-gas sealing device 4 between rotary valve 7 and inflation axis 5.
As shown in figure 4, the inflation axis 5 is axially arranged with the first air inlet 12 and the second air inlet 18, the inflation axis 5 Be radially provided with the first radial air inlet hole being connected to respectively with first air inlet 12, the second air inlet 18, second it is radial into Stomata.
As shown in Figures 2 and 3, it is radial to be respectively equipped with the first radial venthole 28 and second for the radial direction of the rotary valve 7 Venthole 29;The oil-gas sealing device 4 is located at the space between the rotary valve 7 and the inflation axis 5, and the oil gas is close Air cavity is formed between seal apparatus 4 and the rotary valve 7, the inflation axis 5;First air inlet 12, the second air inlet 18 The described first radial venthole 29 of radial venthole 28, second, the described first radial venthole are respectively communicated with by the air cavity 28 with the second radial venthole 29 respectively by the first air supply pipe 2, the second air supply pipe 10 be connected to double type tire first tire 1, Second tire 11.
High pressure gas can pass through air cavity from the first air inlet 12 on inflation axis 5, the first radial air inlet hole, using rotation The first radial venthole 28, the first air supply pipe 2 on rotary valve body 7 enter first tire 1, inflate for first tire 1;High pressure gas Air cavity can be passed through from the second air inlet 18 on inflation axis 5, the second radial air inlet hole, using second on rotary valve 7 Radial venthole 29, the second air supply pipe 10 enter the second tire 11, inflate for the second tire 11.
Central air-charging and air-discharging system provided by the invention can be used in double type tire, can be single tire independence inflation/deflation, Even if one of tyre explosion or damage do not interfere with the normal use of another ipsilateral tire, can also be Good tire inflation/deflation has stronger versatility, greatly improves reliability of the vehicle under battlefield or limiting condition.
In preferred scheme, as shown in Figure 2 and Figure 3, rotary valve 7 is sleeved on knuckle 3, the oil-gas sealing device 4 Including the first sealed valve body 15 in a ring, the second sealed valve body 20, third sealed valve body 22 set gradually from outside to inside, such as Shown in Fig. 5, Fig. 6, Fig. 7, the first sealed valve body 15, the second sealed valve body 20, third sealed valve body 22 are annular in shape, the first sealing Valve body 15, the second sealed valve body 20, third sealed valve body 22 are coaxially placed on rotary valve 7 and inflate in the space between axis 5.
The axially external and inside of first sealed valve body 15 is respectively equipped with the first oil sealing 13, the first sealing gland 14, and first The outside of sealed valve body 15 is the first oil pocket 33, and the first oil sealing 13 can prevent the lubricating oil in the first oil pocket 33 from entering the first gas In chamber 32, the axial sides of second sealed valve body 20 are equipped with the second sealing gland, i.e. the second sealing gland 26 of left side and right side second Sealing gland 27 forms the first air cavity 32, the third between right side the second sealing gland 27 and the first sealing gland 14 of second sealed valve body 20 The axial inner side and outer side of sealed valve body 22 is respectively equipped with third sealing gland 25 and third oil sealing 24, third sealing gland 25 and the second sealing The second air cavity 31 is formed between the second sealing gland of left side 26 of valve body 20, the left side of the third sealed valve body 22 is the second oil pocket 30, third oil sealing 24 is used to prevent the lubricating oil in the second oil pocket 30 from entering in the second air cavity 31.
It is first sealing gland 14, the second sealing gland of the left side 26, the second sealing gland of right side 27, the third sealing gland 25, described First oil sealing 13, the third oil sealing 24 lip fit in it is described inflation axis 5 outer wall (namely inflation axis 5 outer circle table Face), and rotated relative to inflation axis 5.First sealing gland 14, the second sealing gland of left side 26, the second sealing gland of right side 27, the third Sealing gland 25, first oil sealing 13, the third oil sealing 24 are rotary dynamic seal.
In preferred scheme, first sealing gland 14, the second sealing gland of left side 26, the second sealing gland of right side 27, the third gas Envelope 25, first oil sealing 13, the third oil sealing 24 are made of polytetrafluoroethylene material, and polytetrafluoroethylene material, which has, to rub The features such as wiping low coefficient, corrosion-resistant, high temperature resistant, improves its adaptability to various limit adverse circumstances.
In further embodiment, as shown in Fig. 2, Fig. 3, Fig. 5, Fig. 6, first sealed valve body 15, the second sealed valve body 20 radial direction is respectively equipped with the first radial slot 34, the second radial slot 35, and first radial slot 34, second radial slot 35 divide It is not connected to the described first radial venthole 29 of radial venthole 28, second.
The second air cavity 31 between inflation axis 5, the second sealed valve body 20, third sealed valve body 22 and rotary valve 7 is full of Lead to the high pressure gas of second tire 11.It inflates between axis 5, the second sealed valve body 20, the first sealed valve body 15 and rotary valve 7 The first air cavity 32 in be filled with the high pressure gas for leading to first tire 1.
High pressure gas is by the first air inlet 12 on inflation axis 5, into the first air cavity 32, then passes through the first sealed valve body 15 the first radial slot 34, the first radial hole on rotary valve 7 and the first air supply pipe 2, eventually arrives in first tire 1.
High pressure gas is by the second air inlet 18 on inflation axis 5, into the second air cavity 31, then the second sealed valve body 20 The second radial hole and the second air supply pipe 10 on second radial slot 35, rotary valve 7, eventually arrive in the second tire 11.
The knuckle 3 and the wheel between 6 along the wheel while 6 axial directions the first thrust is successively arranged by inside to outside Bearing 8, the second thrust bearing 9 lean on to the outboard end of second thrust bearing 9 inner end of the inflation axis 5.
It is full of in the second oil pocket 30 between knuckle 3, rotary valve 7, the second thrust bearing 9 and third sealed valve body 22 Lubricating oil.
It further include for close to first sealed valve body 15, second sealed valve body 20, third in preferred scheme The end cap 16 that envelope valve body 22 is positioned, the end cap 16 are located at the outside of first sealed valve body 15.End cap 16 and first First oil pocket 33 is formed between sealed valve body 15.
When the wheels turn, end cap 16, rotary valve 7, the first sealed valve body 15, second sealed valve body 20, third The outer ring of sealed valve body 22, the first air supply pipe 2, the second air supply pipe 10, knuckle 3, the first thrust bearing 8, the second thrust bearing 9 Follow the axis rotation of first tire 1, the second tire 11 together around wheel side 6 and inflation axis 5.
In preferred scheme, first sealed valve body 15, second sealed valve body 20, the third sealed valve body 22 Radial outer side and the rotary valve 7 between be equipped be respectively equipped with the one 0 type circle 17, the second O-ring 19, third O-ring 21, the first O-ring 17, the second O-ring 19, third O-ring 21 each serve as sealing function.
First O-ring 17, the second O-ring 19, third O-ring 21 are static seal, wherein the 3rd 0 type circle 21 be in order to Prevent the air-fuel mixture between the second oil pocket 30 and the second air cavity 31, the 2nd 0 type circle 19 is the second air cavity 31 and in order to prevent High pressure gas leakage in one air cavity 32 is ganged up, and the one 0 type circle 17 is in order to prevent in the first air cavity 32 and the first oil pocket 33 Air-fuel mixture.
In preferred scheme, the radially inner side of first sealed valve body 15 is equipped with the first internal channel, first sealing gland 14, the first oil sealing 13 is installed in first internal channel;The radially inner side of second sealed valve body 20 is equipped in second Groove, second sealing gland are mounted in second internal channel, and the radially inner side of the third sealed valve body 22 is equipped with third Internal channel, the third sealing gland 25, third oil sealing 24 are installed in the third internal channel.
In addition, above-mentioned oil-gas sealing device uses modular mentality of designing, it is close by the first sealed valve body 15, second It seals valve body 20, third sealed valve body 22 and corresponding sealing element to constitute, 0 type circle therein and the oil sealing of dynamic sealing, sealing gland all may be used To use identical model, interchangeability and versatility are improved, it is easy to repair, and also structure is simple, occupies little space.
The present invention also provides a kind of double type tires comprising above-mentioned central air-charging and air-discharging system and first tire 1, Two tires 11, knuckle 3, wheel side 6, the knuckle 3 are placed on the outside on the wheel side 6, the also described central air-charging and air-discharging system The inner wall of inflation axis 5 is installed on the outer wall on the wheel side 6.
In preferred scheme, the knuckle 3 and the wheel between 6 along the wheel while 6 axial directions by inside to outside according to Secondary to be equipped with the first thrust bearing 8, the second thrust bearing 9, the outboard end of second thrust bearing 9 is against the inflation axis 5 Inner end.
In preferred scheme, as shown in Figure 1, Figure 2, Figure 3 shows, one end inner sleeve of the rotary valve 7 is loaded on the steering On the lateral wall of section 3, the 4th O-ring 23 is equipped between the knuckle 3 and the rotary valve 7.
It is full of in the second oil pocket 30 between knuckle 3, rotary valve 7, the second thrust bearing 9 and third sealed valve body 22 Lubricating oil, the 4th O-ring 23 is static seal, prevents the lubricating oil in the second oil pocket 30 between rotary valve 7 and knuckle 3 It overflows in gap.
It is above that certain exemplary embodiments of the invention are only described by way of explanation, undoubtedly, for ability The those of ordinary skill in domain without departing from the spirit and scope of the present invention can be with a variety of different modes to institute The embodiment of description is modified.Therefore, above-mentioned attached drawing and description are regarded as illustrative in nature, and should not be construed as to the present invention The limitation of claims.

Claims (10)

1. a kind of central air-charging and air-discharging system for double type tire, which is characterized in that close including rotary valve, inflation axis, oil gas Seal apparatus, the inflation axis are axially arranged with the first air inlet and the second air inlet, the inflation axis be radially provided with respectively with The first radial air inlet hole, the second radial air inlet hole that first air inlet, the second air inlet are connected to;The diameter of the rotary valve To being respectively equipped with the first radial venthole and the second radial venthole;The oil-gas sealing device is located at the rotary valve and institute It states between inflation axis, forms air cavity between the oil-gas sealing device and the rotary valve, the inflation axis;Described first into Port, the second air inlet are respectively communicated with the described first radial venthole, the second radial venthole by the air cavity, and described first Radial venthole and the second radial venthole pass through the first air supply pipe respectively, the second air supply pipe is connected to the first round in double type tire Tire, the second tire.
2. central air-charging and air-discharging system according to claim 1, which is characterized in that the oil-gas sealing device include by outside to The first sealed valve body in a ring, the second sealed valve body, the third sealed valve body inside set gradually, first sealed valve body Axially external and inside is respectively equipped with the first oil sealing, the first sealing gland, and the axial sides of second sealed valve body are equipped with second The inner side and outer side of sealing gland, the third sealed valve body axial direction is respectively equipped with third sealing gland and third oil sealing;First sealing gland, Second sealing gland, the third sealing gland, first oil sealing, the third oil sealing lip fit in the inflation axis Outer wall.
3. central air-charging and air-discharging system according to claim 2, which is characterized in that first sealed valve body, the second sealing The radial direction of valve body is respectively equipped with the first radial slot, the second radial slot, and first radial slot, second radial slot are respectively communicated with Described first radial venthole, the second radial venthole.
4. central air-charging and air-discharging system according to claim 2 or 3, which is characterized in that first sealed valve body, described Two sealed valve bodies, the third sealed valve body radial outer side and the rotary valve between be equipped with that be respectively equipped with first O-shaped Circle, the second O-ring, third O-ring.
5. the central air-charging and air-discharging system according to any one of claim 2-4, which is characterized in that first sealing gland, institute The second sealing gland, the third sealing gland, first oil sealing, the third oil sealing is stated to be made of polytetrafluoroethylene material.
6. the central air-charging and air-discharging system according to any one of claim 2-5, which is characterized in that first sealed valve body Radially inner side be equipped with the first internal channel, first sealing gland, the first oil sealing are installed in first internal channel;Described The radially inner side of two sealed valve bodies is equipped with the second internal channel, and second sealing gland is mounted in second internal channel, and described the The radially inner side of three sealed valve bodies is equipped with third internal channel, and the third sealing gland, third oil sealing are installed in the third septal fossula In slot.
7. the central air-charging and air-discharging system according to any one of claim 2-6, which is characterized in that further include for described The end cap that first sealed valve body, second sealed valve body, third sealed valve body are positioned, the end cap are located at described first The outside of sealed valve body.
8. a kind of double type tire, including first tire, the second tire, knuckle, wheel any one of side and claim 1-7 institute The central air-charging and air-discharging system stated, the knuckle are placed on the outside on the wheel side, the inflation axis of the central air-charging and air-discharging system Inner wall is installed on the outer wall on the wheel side.
9. double type tire according to claim 8, which is characterized in that along the wheel between the knuckle and the wheel side Side axis are successively arranged the first thrust bearing, the second thrust bearing, the outboard end of second thrust bearing to by inside to outside Against the inner end of the inflation axis.
10. double type tire according to claim 8, which is characterized in that one end inner sleeve of the rotary valve is loaded on institute It states on the lateral wall of knuckle, the 4th O-ring is equipped between the knuckle and the rotary valve.
CN201810946325.7A 2018-08-17 2018-08-17 Central inflation and deflation system for double-type tire and double-type tire Active CN108928191B (en)

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Application Number Priority Date Filing Date Title
CN201810946325.7A CN108928191B (en) 2018-08-17 2018-08-17 Central inflation and deflation system for double-type tire and double-type tire

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Application Number Priority Date Filing Date Title
CN201810946325.7A CN108928191B (en) 2018-08-17 2018-08-17 Central inflation and deflation system for double-type tire and double-type tire

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CN108928191B CN108928191B (en) 2024-03-12

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4765358A (en) * 1986-09-02 1988-08-23 The Goodyear Tire & Rubber Company Inflation valve for a dual chamber tire
EP0588595A1 (en) * 1992-09-15 1994-03-23 Oshkosh Truck Corporation Combined original and retrofit central tire inflation system
US5313995A (en) * 1987-06-29 1994-05-24 Eaton Corporation Central tire inflation system
CN2578119Y (en) * 2002-08-13 2003-10-08 李晓雷 Double cavity longitudinally assembled safety wheel
CN102019820A (en) * 2009-09-22 2011-04-20 中国北方车辆研究所 Gas circuit structure for central gas charging and discharging system
CN104736356A (en) * 2012-05-16 2015-06-24 哈金森有限公司 Dual wheels with internal air passageways
CN107128133A (en) * 2017-05-25 2017-09-05 武汉元丰汽车技术发展有限公司 Double-channel rotatable sealing device assembly
CN208774434U (en) * 2018-08-17 2019-04-23 北京北方创成车辆技术发展有限公司 Central air-charging and air-discharging system and double type tire for double type tire

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4765358A (en) * 1986-09-02 1988-08-23 The Goodyear Tire & Rubber Company Inflation valve for a dual chamber tire
US5313995A (en) * 1987-06-29 1994-05-24 Eaton Corporation Central tire inflation system
EP0588595A1 (en) * 1992-09-15 1994-03-23 Oshkosh Truck Corporation Combined original and retrofit central tire inflation system
CN2578119Y (en) * 2002-08-13 2003-10-08 李晓雷 Double cavity longitudinally assembled safety wheel
CN102019820A (en) * 2009-09-22 2011-04-20 中国北方车辆研究所 Gas circuit structure for central gas charging and discharging system
CN104736356A (en) * 2012-05-16 2015-06-24 哈金森有限公司 Dual wheels with internal air passageways
CN107128133A (en) * 2017-05-25 2017-09-05 武汉元丰汽车技术发展有限公司 Double-channel rotatable sealing device assembly
CN208774434U (en) * 2018-08-17 2019-04-23 北京北方创成车辆技术发展有限公司 Central air-charging and air-discharging system and double type tire for double type tire

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