CN103009929B - Anti-explosion automobile tire based on main-secondary tire structure - Google Patents

Abstract

The invention belongs to the technical field of automobile safety traffic, and relates to an automobile tire pressure adjusting technique which can be used for adjusting instable automobile tire pressure and effectively suppressing tire explosion accident. The anti-explosion automobile tire is mainly characterized in that a secondary tire air storage structure is added on the basis of a conventional automobile tire; when the running tire pressure is higher, the surplus air is discharged into the secondary tire through a one-way valve structure between the main tire and the secondary tire; and if the air pressure in the secondary tire achieves a certain upper limit value, the surplus air is discharged out of a tire system in a mode that the pressure of a one-way valve spring on the secondary tire self is overcome. When the running tire pressure is lower than the lowest safety traffic pressure, the air is supplemented and aerated into the main tire from the secondary tire through the one-way valve structure between the main tire and the secondary tire, so that the situation that the running tire works within a safety traffic tire pressure range is effectively ensured.

Description

A kind of explosion proof automobile tire based on major-minor tire structure

Technical field

The invention belongs to motor tire field, especially a kind of motor tire that adopts major-minor tire structure.

Background technology

For the explosion-proof self-checking device of tire, external relatively maturation is TPMS system at present.TPMS technology is mainly divided into indirect type TPMS and direct-type TPMS.Indirect type TPMS is mainly that the wheel speed sensors by automobile ABS carrys out the rotating speed difference between comparative tire, thereby reaches the object of monitoring tire pressure.But it cannot to two above tires, situation and the situation of speed over 100 kilometers/hour of deficency judge simultaneously.And direct-type monitoring tire pressure technology is mainly to utilize sensing transmitter directly to monitor tire pressure, and the mode by transmission over radio sends on reception telltale the pressure signal spying out.This system is mainly comprised of three parts: sensing transmitter, receptor and telltale.This three's the object that is used in conjunction with to reach dangerous air pressure automatic alarm.Because direct-type TPMS is better than indirect type TPMS in performance, so direct-type TPMS technology becomes dominant technology.

The domestic research for TPMS technology is still improved and the market starting stage in product, and the supporting market of industrialization starts not yet on a large scale, and one of the main reasons is that this systematic study cost is very high.No matter be in research and development field or in market segment so domestic, have to be developed.

Direct-type TPMS system strides forward to the third generation at present, its principal feature is to be based upon on the basis of second generation tire pressure monitoring system, consider the shortcoming of the short easy temperature influence of battery life, take passive monitoring, original lithium cell energy supply equipment is changed into and relies on internal mechanism for whole sensor provides the energy, have so undoubtedly considerable realistic meaning and economic implications.

But from subjective, direct-type TPMS device only limits to reflect in real time the pressure condition of tire.When tire pressure mal, just this message is passed to chaufeur, remind chaufeur to take to change accordingly tire inflation measure, do not carry out the real-time adjusting of tire pressure.

When pressure of tire is too high, not only cause blowing out while running at high speed, and normal driving is also interfered at ordinary times.For example, tire noise change is in the process of moving large; Tire can make vehicle body jumping frequency rate excessive in some fluctuating sections, and comfort declines; Too high tire pressure give turn to bring slim and graceful in, the tyre side while making to turn to also reduces to earth-grasping force, thereby causes too early understeer and produce threat.In addition, the most important thing is that too high tyre pressure can make the ground contact area of tire diminish, on the road surface of low adhesive ability, cause car brakeing effect to reduce.

And when pressure of tire is too low, not only the noise of tire still exists, and greatly reduce on driving performance.When chaufeur is being beaten fast bearing circle and turned, it is heavy that the weight of bearing circle becomes, and the speed of response of headstock latens slow, equally there will be understeer when curved.In addition, the most important thing is that oil consumption improves greatly.Therefore, must the tire pressure of tire be limited in Applicable scope actv., improve service life and the safety performance of tire, effectively prevent the generation of the accident of blowing out.

Summary of the invention

For this deficiency, this patent is from the angle of real-time adjusting knurl air pressure, adopt the version of major-minor tire twins, utilize check valve group between the two to carry out cooperating, automatic adjustment, thereby guarantee that main tire (tire travels) works under applicable tire pressure, thereby prevent the generation of the situation of blowing out.

The technical scheme of this patent is:

An explosion proof automobile tire based on major-minor tire structure, comprises main tire 1, wheel rim 2, secondary tire 3, check valve group 4, secondary tire check valve 5, between main tire 1 and secondary tire 3, is provided with check valve group 4, is provided with secondary tire check valve 5 on secondary tire; Described check valve group 4 comprises check valve group between the major-minor tire that two communication direction are contrary, and described secondary tire check valve 5 only can be by secondary tire 3 inside to outside unilaterally connected.

Further, secondary tire 3 is arranged on the inner side of the interior all wheel rims 2 of main tire 1.

Wherein, check valve group 4 technical schemes described in this patent are specially: comprise that valve body 14, the first spool 15, the second air flue 16, the second spring 17, the second spool 18, the first valve pocket top opening 19, the 3rd air flue 20, the first spring 21, pore 22, the first air flue 23, the first valve pocket 24, the second valve pocket 25 form

In described valve body 14, be provided with the first valve pocket 24 and the first air flue 23, the first valve pocket 24 is communicated with by the first valve pocket chamber top opening 19 with main tire 1, the first air flue 23 is communicated with respectively sidewall and the secondary tire 3 of the first valve pocket 24, in the first valve pocket 24, be provided with the first spool 15, the first spool 15 is connected with the first valve pocket 24 bottoms by the first spring 21, the first described spool 15 can endwisely slip along the first spring 21 the first valve pocket 24 is interior, the first air flue 23 is communicated with or closure with the first valve pocket top opening 19, the first valve pocket 24 bottoms are also provided with pore 22 makes the first valve pocket 24 be communicated with secondary tire 3, the first spool 15 makes pore 22 not be communicated with mutually with the first valve pocket top opening 19 with the first valve pocket 24 air-tight fit,

In the first described spool 15, be provided with the second valve pocket 25, the second valve pocket 25 sidewalls are communicated with the main tire end of the first spool 15 by the second air flue 16, the second valve pocket 25 tops, chamber are communicated with the secondary tire end of the first spool 15 by the 3rd air flue 20, at the bottom of the second valve pocket 25 chambeies, by the second spring 17, connect the second spool 18, the second described spool 18 can endwisely slip along the second spring 17 the second valve pocket 25 is interior, the second air flue 16 is communicated with or closed with the 3rd air flue 20.

Further, the secondary tire check valve 5 described in this patent is spring loaded check valve.

Wherein, secondary tire check valve 5 technical schemes described in this patent are specially: described secondary tire check valve 5 comprises air flue D6, secondary tire valve body 7, air flue A8, air flue B13, spool A9, valve gap 10, air flue C11, spring A12,

Described secondary tire valve body 7 is hollow structure, and one end is stretched in secondary tire 3, and the other end is provided with valve gap 10; The end face that secondary tire valve body 7 stretches in secondary tire 3 is provided with air flue D6, and valve gap 10 arranges air flue C11; Spool A9 and secondary tire valve body 7 inwalls are equipped with, air flue A8, air flue B13 are arranged on spool A9 both sides, described spring A12 two ends connect respectively spool A9 and valve gap 10, described spool A9 can endwisely slip along spring A12 secondary tire valve body 7 is interior, air flue D6 is communicated with or closed with air flue A8, air flue B13.

In this patent, setting parameter is as follows:

The elasticity modulus of described spring A (12)

The elasticity modulus of the second spring (17)

The elasticity modulus of the first spring (21)

The pre compressed magnitude of spring A (12)

The pre compressed magnitude of the second spring (17) $X_{170}\≥\frac{(P_{2\max }{S}_{182}-P_{1\max }{S}_{181})X_{17}}{(P_{1\max }-P_{1\min })S_{181}+(P_{2\min }-P_{2\max })S_{182}};$

The pre compressed magnitude of the first spring (21) $X_{210}\≥\frac{X_{21}(P_{1\min }{S}_{151}-P_{2\min }{S}_{152})}{(P_{1\max }-P_{1\min })S_{151}+(P_{2\min }-P_{2\max })S_{152}};$

Wherein:

P ₁it is the actual tire pressure of main tire (1);

P _1maxthe upper limit of standard tire pressure while being main tire (1) safety traffic;

P _1minthe lower limit of standard tire pressure while being main tire (1) safety traffic;

P ₂for the actual tire pressure of secondary tire (3);

P _2maxthe upper limit for secondary tire (3) work tire pressure;

P _2minlower limit for secondary tire (3) work tire pressure;

P _{2 (2)}in service condition for check valve group (4), work as P ₁=P _1mintime secondary tire real-time air pressure;

P _{2 (4)}in service condition for check valve group (4), work as P ₁=P _1maxtime secondary tire real-time air pressure;

X ₁₂for spring A (12) total compression amount and pre compressed magnitude X ₁₂₀poor;

X ₁₇be the second spring (17) total compression amount and pre compressed magnitude X ₁₇₀poor;

X ₂₁be the first spring (21) total compression amount and pre compressed magnitude X ₂₁₀poor;

S ₉for P ₂active area on spool A (9);

S ₁₅₁for P ₁active area on the first spool (15);

S ₁₅₂for P ₂active area on the first spool (15);

S ₁₈₁for P ₁active area on the second spool (18);

S ₁₈₂for P ₂active area on the second spool (18).

The present invention is mainly in the situation that pressure of tire (tire travels) is too high, its inner institute inflatable body is imported in secondary tire (accumulator unit) by unidirectional valve block structure, thereby guarantee the higher limit of tire pressure lower than safety tyre pressure of travelling of main tire (tire travels).And when secondary tire tire pressure reaches certain higher limit, the check valve itself carrying by secondary tire is again discharged tire system, actv. has been controlled the tire pressure upper limit of whole tire system; And when main tire tire pressure is too low, secondary tire plays certain tonifying Qi effect to main tire again, the tire pressure lower limit of tire tire pressure higher than safety traffic of having guaranteed to travel.So repeatedly, actv. guarantees tire pressure safety, reduces the generation of the accident of blowing out.

Accompanying drawing explanation

Fig. 1 is major-minor tire integral structure assembling schematic diagram of the present invention;

Fig. 2 is that in Fig. 1, A-A, to cutaway view, and comprises the part sectional view that assembles check valve group position;

Fig. 3 is that secondary tire carries one-way valve structures schematic diagram;

Fig. 4 is the check valve group schematic diagram of the assembling between major-minor tire.

In figure: 1, main tire, 2, wheel rim, 3, secondary tire, 4, check valve group, 5, secondary tire check valve, 6, air flue D, 7, secondary tire valve body, 8, air flue A, 9, spool A, 10, valve gap, 11, air flue C, 12, spring A, 13, air flue B, 14, valve body, the 15, first spool, 16, the second air flue, the 17, second spring, the 18, second spool, 19, the first valve pocket top opening, 20, the 3rd air flue, the 21, first spring, 22, pore, 23, the first air flue, 24, the first valve pocket, the 25, second valve pocket, the 19, first valve pocket top opening.

The specific embodiment

Embodiment 1:

Principle below in conjunction with structure and accompanying drawing explanation this patent:

The explosion proof automobile tire based on major-minor tire structure of this patent, comprises main tire 1, wheel rim 2, secondary tire 3, check valve group 4, secondary tire check valve 5, between main tire 1 and secondary tire 3, is provided with check valve group 4, is provided with secondary tire check valve 5 on secondary tire; Described check valve group 4 comprises check valve group between the major-minor tire that two communication direction are contrary, and described secondary tire check valve 5 only can be by secondary tire 3 inside to outside unilaterally connected.Further, secondary tire 3 is arranged on the inner side of the interior all wheel rims 2 of main tire 1.

As shown in Figure 1, main tire is the tire that travels, secondary tire structural arrangement is in wheel rim inner side, being close to wheel rim arranges in the form of a ring, between main tire and secondary tire, utilize check valve group to be connected, secondary tire itself carries check valve, by the setting of check valve group 4 and secondary tire check valve 5, keeps main tire, secondary tire tire pressure all the time in safe range.

As shown in Figure 2, it is mainly the A-A cutaway view of Fig. 1, and secondary tire axial width only accounts for 1/2 of wheel rim axial width, and near wheel rim disposed inboard, the cross section that represents check valve group by semi-sictional view is in addition for circular.

Embodiment 2:

For embodiment 1 further, check valve group 4 technical schemes described in this patent are specially: comprise that valve body 14, the first spool 15, the second air flue 16, the second spring 17, the second spool 18, the first valve pocket top opening 19, the 3rd air flue 20, the first spring 21, pore 22, the first air flue 23, the first valve pocket 24, the second valve pocket 25 form

In described valve body 14, be provided with the first valve pocket 24 and the first air flue 23, the first valve pocket 24 is communicated with by the first valve pocket chamber top opening 19 with main tire 1, the first air flue 23 is communicated with respectively sidewall and the secondary tire 3 of the first valve pocket 24, in the first valve pocket 24, be provided with the first spool 15, the first spool 15 is connected with the first valve pocket 24 bottoms by the first spring 21, the first described spool 15 can endwisely slip along the first spring 21 the first valve pocket 24 is interior, the first air flue 23 is communicated with or closure with the first valve pocket top opening 19, the first valve pocket 24 bottoms are also provided with pore 22 makes the first valve pocket 24 be communicated with secondary tire 3, the first spool 15 makes pore 22 not be communicated with mutually with the first valve pocket top opening 19 with the first valve pocket 24 air-tight fit,

In the first described spool 15, be provided with the second valve pocket 25, the second valve pocket 25 sidewalls are communicated with the main tire end of the first spool 15 by the second air flue 16, the second valve pocket 25 tops, chamber are communicated with the secondary tire end of the first spool 15 by the 3rd air flue 20, at the bottom of the second valve pocket 25 chambeies, by the second spring 17, connect the second spool 18, the second described spool 18 can endwisely slip along the second spring 17 the second valve pocket 25 is interior, the second air flue 16 is communicated with or closed with the 3rd air flue 20.

As shown in Figure 4, the function of main tire 1 is and realizes normally travelling of automobile, and its pressure is subject to operating mode impact.And secondary tire 3 tire that not travels, the temperature rise pressure variation impact while not being subject to travel, the reasonable operation pressure operating mode that its inflated condition is tire.Along with travelling of automobile, main tire 1 tire pressure can rise thereupon.When the air pressure of main tire 1 is during far above the air pressure of secondary tire 3, the first spool 15, under high pressure gas effect, overcomes the application force of the first spring 21, and gas enters secondary tire chamber, thereby effectively reduces main tire tire pressure.On the other hand, along with gas enters secondary tire, secondary air pressure has certain rising with respect to initial condition, if rise to the highest safety tyre pressure of system, unnecessary gas carries check valve by secondary tire and overflows major-minor tire system, has effectively limited the top pressure of system.When main tire tire pressure < safety traffic barometric minimum≤secondary tire tire pressure, secondary tire overcomes the application force of the second spring 17, and the second spool 18 is backed down, and main tire is played to certain tonifying Qi effect, thereby reaches the object of the main tire pressure of fine setting.

Embodiment 3:

Further, the secondary tire check valve 5 described in this patent is spring loaded check valve.

As shown in Figure 3, secondary tire check valve 5 technical schemes described in this patent are specially: described secondary tire check valve 5 comprises air flue D6, secondary tire valve body 7, air flue A8, air flue B13, spool A9, valve gap 10, air flue C11, spring A12,

Described secondary tire valve body 7 is hollow structure, and one end is stretched in secondary tire 3, and the other end is provided with valve gap 10; The end face that secondary tire valve body 7 stretches in secondary tire 3 is provided with air flue D6, and valve gap 10 arranges air flue C11; Spool A9 and secondary tire valve body 7 inwalls are equipped with, air flue A8, air flue B13 are arranged on spool A9 both sides, described spring A12 two ends connect respectively spool A9 and valve gap 10, described spool A9 can endwisely slip along spring A12 secondary tire valve body 7 is interior, air flue D6 is communicated with or closed with air flue A8, air flue B13.

The major cause of considering the accident of blowing out is that pressure of tire is unstable, and most cases be due to pressure of tire too high due to, so we are by separately add check valve on secondary tire 3, portion gas are discharged to the tire system of travelling, thereby prevents that tire system tire pressure is too high.

Embodiment 4:

The structure of this patent is when specific implementation, and parameter designing is as follows:

Parameter designing is mainly by each known parameters, to determine the designing requirement of elasticity modulus and the pre compressed magnitude of each check valve medi-spring.

Following parameter is by the obtainable parameter of structure actual measurement to this patent, or the parameter that can set according to daily experience, and principal parameter is as follows:

P ₁the actual tire pressure of-main tire 1;

P _1max, P _1minthe upper and lower bound of standard tire pressure during-main tire 1 safety traffic;

P ₂the actual tire pressure of-secondary tire 3;

P _2max, P _2minthe upper and lower bound of-secondary tire 3 standard operation tire pressures;

P _{2 (2)}in the service condition of-check valve group 4, work as P ₁=P _1mintime secondary tire real-time air pressure, and P _2min≤ P _{2 (2)}≤ P _2max;

P _{2 (4)}in the service condition of-check valve group 4, work as P ₁=P _1maxtime secondary tire real-time air pressure, and P _2min≤ P _{2 (4)}≤ P _2max;

X ₁₂-spring A12 is at total compression amount and the pre compressed magnitude X of this system ₁₂₀poor (being the maximum moving distance of spool A9);

X ₁₇the-the second spring 17 is at total compression amount and the pre compressed magnitude X of this system ₁₇₀poor (being the maximum moving distance of the second spool 18);

X ₂₁the-the first spring 21 is at total compression amount and the pre compressed magnitude X of this system ₂₁₀poor (being the maximum moving distance of the first spool 15);

S ₉-secondary air pressure P ₂active area on spool A9;

S ₁₅₁-main air pressure P ₁active area on the first spool 15;

S ₁₅₂-secondary air pressure P ₂active area on the first spool 15;

S ₁₈₁-main air pressure P ₁active area on the second spool 18;

S ₁₈₂-secondary air pressure P ₂active area on the second spool 18.

After above-mentioned parameter is determined, this patent can be realized the function of this patent easily by the following parameter of price modification, and parameter to be determined is as follows:

K ₁₂the elasticity modulus of-spring A12;

K ₁₇the elasticity modulus of the-the second spring 17;

K ₂₁the elasticity modulus of the-the first spring 21;

X ₁₂₀the pre compressed magnitude of-spring A12;

X ₁₇₀the pre compressed magnitude of the-the second spring 17;

X ₂₁₀the pre compressed magnitude of the-the first spring 21.

(note: P ₁, P ₂, P _{2 (2)}, P _{2 (4)}be relative atmospheric gas pressure)

One, the service condition of secondary tire check valve 5

(1) work as P ₂≤ P _2mintime, check valve 5 must be in closure state;

K ₁₂X ₁₂₀≥P _2minS ₉……………………………………………………………………………①

(2) work as P _2min<P ₂<P _2maxtime, the spool A9 in check valve 5 starts mobile, but spool A9 does not reach opening;

(3) work as P ₂=P _2maxtime, the spool A9 in check valve 5 is critical opening;

P _2maxS ₉＝K ₁₂(X ₁₂₀+X ₁₂)………………………………………………………………………②

(4) work as P ₂>P _2maxtime, check valve 5 is opened, and system is outwards discharged unnecessary gas always.

1. 2. simultaneous formula, tries to achieve:

$K_{12}\&le;\frac{(P_{2\max }-P_{2\min })S_9}{X_{12}}$

$X_{120}\&GreaterEqual;\frac{P_{2\min }{X}_{12}}{P_{2\max }-P_{2\min }}$

Two, the service condition of check valve group 4

(1) work as P ₁<P _1mintime, the first spool 15 is completely closed, and the second spool 18 is opened completely, and secondary tire 3 is to main tire 1 make-up gas;

(2) work as P ₁=P _1mintime,

The first spool 15 must be closure state:

P _1minS ₁₅₁≤K ₂₁X ₂₁₀+P ₂₍₂₎S ₁₅₂……………………………………………………………………………③

The second spool 18 must be critical opening:

K ₁₇(X ₁₇+X ₁₇₀)+P _1minS ₁₈₁＝P ₂₍₂₎S ₁₈₂……………………………………………………………………④

(3) work as P _1min<P ₁<P _1maxtime, the first spool 15 and the second spool 18 all can not opened, and main tire 1 tire pressure is within the scope of the safety tyre pressure that normally travels;

(4) work as P ₁=P _1maxtime,

The first spool 15 is in critical opening:

P _1maxS ₁₅₁＝K ₂₁(X ₂₁₀+X ₂₁)+P ₂₍₄₎S ₁₅₂………………………………………………………………………⑤

The second spool 18 is in complete closure state:

P ₂₍₄₎S ₁₈₂≤K ₁₇X ₁₇₀+P _1maxS ₁₈₁…………………………………………………………………………⑥

(5) work as P ₁>P _1maxtime, the first spool 15 is opened, and the second spool 18 is completely closed, and main tire 1 is to the unnecessary gas of secondary tire 3 discharge.

3. 5. simultaneous formula, tries to achieve:

$K_{21}\&le;$ $\frac{(P_{1\max }-P_{1\min })S_{151}+(P_{2\left(2\right)}-P_{2\left(4\right)})S_{152}}{X_{21}}$ …………………………………………………………⑦

$X_{210}\&GreaterEqual;$ $\frac{X_{21}{P}_{1\min }{S}_{151}-X_{21}{P}_{2\left(2\right)}{S}_{152}}{(P_{1\max }-P_{1\min })S_{151}+(P_{2\left(2\right)}-P_{2\left(4\right)})S_{152}}$ …………………………………………………………⑧

For inequality 7. and 8., because P _2min≤ P _{2 (2)}≤ P _2max, P _2min≤ P _{2 (4)}≤ P _2max

So $K_{21}\&le;{\left(\frac{(P_{1\max }-P_{1\min })S_{151}+(P_{2\left(2\right)}-P_{2\left(4\right)})S_{152}}{X_{21}}\right)}_{\min }=\frac{(P_{1\max }-P_{1\min })S_{151}}{X_{21}}$

$X_{210}\&GreaterEqual;{\left(\frac{X_{21}{P}_{1\min }{S}_{151}-X_{21}{P}_{2\left(2\right)}{S}_{152}}{(P_{1\max }-P_{1\min })S_{151}+(P_{2\left(2\right)}-P_{2\left(4\right)})S_{152}}\right)}_{\max }=\frac{X_{21}(P_{1\min }{S}_{151}-P_{2\min }{S}_{152})}{(P_{1\max }-P_{1\min })S_{151}+(P_{2\min }-P_{2\max })S_{152}}$

4. 6. simultaneous formula, tries to achieve:

$K_{17}\&le;$ $\frac{(P_{1\max }-P_{1\min })S_{181}+(P_{2\left(2\right)}-P_{2\left(4\right)})S_{182}}{X_{17}}$ …………………………………………………………⑨

$X_{170}\&GreaterEqual;$ $\frac{(P_{2\left(4\right)}{S}_{182}-P_{1\max }{S}_{181})X_{17}}{(P_{1\max }-P_{1\min })S_{181}+(P_{2\left(2\right)}+P_{2\left(4\right)})S_{182}}$ …………………………………………………………⑩

For inequality 9. and 10., because P _2min≤ P _{2 (2)}≤ P _2max, P _2min≤ P _{2 (4)}≤ P _2max

So $K_{17}\&le;{\left(\frac{(P_{1\max }-P_{1\min })S_{181}+(P_{2\left(2\right)}-P_{2\left(4\right)})S_{182}}{X_{17}}\right)}_{\min }=\frac{(P_{1\max }-P_{1\min })S_{181}}{X_{17}}$

$X_{170}\&GreaterEqual;{\left(\frac{(P_{2\left(4\right)}{S}_{182}-P_{1\max }{S}_{181})X_{17}}{(P_{1\max }-P_{1\min })S_{181}+(P_{2\left(2\right)}-P_{2\left(4\right)})S_{182}}\right)}_{\max }=\frac{(P_{2\max }{S}_{182}-P_{1\max }{S}_{181})X_{17}}{(P_{1\max }-P_{1\min })S_{181}+(P_{2\min }-P_{2\max })S_{182}}.$

Conclusion, each parameter value scope in this patent is:

K ₁₂： $K_{12}\&le;\frac{(P_{2\max }-P_{2\min })S_9}{X_{12}}$

K ₁₇： $K_{17}\&le;{\left(\frac{(P_{1\max }-P_{1\min })S_{181}+(P_{2\left(2\right)}-P_{2\left(4\right)})S_{182}}{X_{17}}\right)}_{\min }=\frac{(P_{1\max }-P_{1\min })S_{181}}{X_{17}}$

K ₂₁： $K_{21}\&le;{\left(\frac{(P_{1\max }-P_{1\min })S_{151}+(P_{2\left(2\right)}-P_{2\left(4\right)})S_{152}}{X_{21}}\right)}_{\min }=\frac{(P_{1\max }-P_{1\min })S_{151}}{X_{21}}$

X ₁₂₀： $X_{120}\&GreaterEqual;\frac{P_{2\min }{X}_{12}}{P_{2\max }-P_{2\min }}$

X ₁₇₀： $X_{170}\&GreaterEqual;{\left(\frac{(P_{2\left(4\right)}{S}_{182}-P_{1\max }{S}_{181})X_{17}}{(P_{1\max }-P_{1\min })S_{181}+(P_{2\left(2\right)}-P_{2\left(4\right)})S_{182}}\right)}_{\max }=\frac{(P_{2\max }{S}_{182}-P_{1\max }{S}_{181})X_{17}}{(P_{1\max }-P_{1\min })S_{181}+(P_{2\min }-P_{2\max })S_{182}}$

X ₂₁₀： $X_{210}\&GreaterEqual;{\left(\frac{X_{21}{P}_{1\min }{S}_{151}-X_{21}{P}_{2\left(2\right)}{S}_{152}}{(P_{1\max }-P_{1\min })S_{151}+(P_{2\left(2\right)}-P_{2\left(4\right)})S_{152}}\right)}_{\max }=\frac{X_{21}(P_{1\min }{S}_{151}-P_{2\min }{S}_{152})}{(P_{1\max }-P_{1\min })S_{151}+(P_{2\min }-P_{2\max })S_{152}}.$

Claims (4)

1. the explosion proof automobile tire based on major-minor tire structure, it is characterized in that: comprise main tire (1), wheel rim (2), secondary tire (3), check valve group (4), secondary tire check valve (5), between main tire (1) and secondary tire (3), be provided with check valve group (4), on secondary tire, be provided with secondary tire check valve (5); described check valve group (4) comprises check valve group between the major-minor tire that two communication direction are contrary, described secondary tire check valve (5) only can be inner to outside unilaterally connected by secondary tire (3), described secondary tire (3) is arranged on the inner side of all wheel rims (2) in main tire (1), described check valve group (4) comprises valve body (14), the first spool (15), the second air flue (16), the second spring (17), the second spool (18), the first valve pocket top opening (19), the 3rd air flue (20), the first spring (21), pore (22), the first air flue (23), the first valve pocket (24), the second valve pocket (25) forms

In described valve body (14), be provided with the first valve pocket (24) and the first air flue (23), the first valve pocket (24) is communicated with by the first valve pocket chamber top opening (19) with main tire (1), the first air flue (23) is communicated with respectively sidewall and the secondary tire (3) of the first valve pocket (24), in the first valve pocket (24), be provided with the first spool (15), the first spool (15) is connected with the first valve pocket (24) bottom by the first spring (21), described the first spool (15) can endwisely slip along the first spring (21) in the first valve pocket (24), the first air flue (23) is communicated with or closure with the first valve pocket top opening (19), the first valve pocket (24) bottom is also provided with pore (22) makes the first valve pocket (24) be communicated with secondary tire (3), the first spool (15) makes pore (22) not be communicated with mutually with the first valve pocket top opening (19) with the first valve pocket (24) air-tight fit,

In described the first spool (15), be provided with the second valve pocket (25), the second valve pocket (25) sidewall is communicated with the main tire end of the first spool (15) by the second air flue (16), top, the second valve pocket (25) chamber is communicated with the secondary tire end of the first spool (15) by the 3rd air flue (20), at the bottom of the second valve pocket (25) chamber, by the second spring (17), connect the second spool (18), described the second spool (18) can endwisely slip along the second spring (17) in the second valve pocket (25), the second air flue (16) is communicated with or closure with the 3rd air flue (20).

2. the explosion proof automobile tire based on major-minor tire structure according to claim 1, is characterized in that: described secondary tire check valve (5) is spring loaded check valve.

3. the explosion proof automobile tire based on major-minor tire structure according to claim 2, is characterized in that: described secondary tire check valve (5) comprises air flue D (6), secondary tire valve body (7), air flue A (8), air flue B (13), spool A (9), valve gap (10), air flue C (11), spring A (12);

Described secondary tire valve body (7) is hollow structure, and one end is stretched in secondary tire (3), and the other end is provided with valve gap (10); The end face that secondary tire valve body (7) stretches in secondary tire (3) is provided with air flue D (6), and valve gap (10) arranges air flue C (11); Spool A (9) is equipped with secondary tire valve body (7) inwall, air flue A (8), air flue B (13) are arranged on spool A (9) both sides, described spring A (12) two ends connect respectively spool A (9) and valve gap (10), described spool A (9) can endwisely slip along spring A (12) in secondary tire valve body (7), air flue D (6) is communicated with or closure with air flue A (8), air flue B (13).

4. the explosion proof automobile tire based on major-minor tire structure according to claim 3, is characterized in that:

The elasticity modulus of described spring A (12)

The elasticity modulus of the second spring (17)

The elasticity modulus of the first spring (21)

The pre compressed magnitude of spring A (12)

The pre compressed magnitude of the second spring (17) $X_{170}\&GreaterEqual;\frac{(P_{2\max }{S}_{182}-P_{1\max }{S}_{181})X_{17}}{(P_{1\max }-P_{1\min })S_{181}+(P_{2\min }-P_{2\max })S_{182}};$

The pre compressed magnitude of the first spring (21) $X_{210}\&GreaterEqual;\frac{X_{21}(P_{1\min }{S}_{151}-P_{2\min }{S}_{152})}{(P_{1\max }-P_{1\min })S_{151}+(P_{2\min }-P_{2\max })S_{152}};$

Wherein:

P ₁it is the actual tire pressure of main tire (1);

P _1maxthe upper limit of standard tire pressure while being main tire (1) safety traffic;

P _1minthe lower limit of standard tire pressure while being main tire (1) safety traffic;

P ₂for the actual tire pressure of secondary tire (3);

P _2maxthe upper limit for secondary tire (3) work tire pressure;

P _2minlower limit for secondary tire (3) work tire pressure;

P _{2 (2)}in service condition for check valve group (4), work as P ₁=P _1mintime secondary tire real-time air pressure;

P _{2 (4)}in service condition for check valve group (4), work as P ₁=P _1maxtime secondary tire real-time air pressure;

X ₁₂for spring A (12) total compression amount and pre compressed magnitude X ₁₂₀poor;

X ₁₇be the second spring (17) total compression amount and pre compressed magnitude X ₁₇₀poor;

X ₂₁be the first spring (21) total compression amount and pre compressed magnitude X ₂₁₀poor;

S ₉for P ₂active area on spool A (9);

S ₁₅₁for P ₁active area on the first spool (15);

S ₁₅₂for P ₂active area on the first spool (15);

S ₁₈₁for P ₁active area on the second spool (18);

S ₁₈₂for P ₂active area on the second spool (18).