CN103009929A - 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 the 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 the TPMS system at present.The TPMS technology mainly is divided into indirect type TPMS and direct-type TPMS.Indirect type TPMS mainly is that the wheel speed sensors by automobile ABS comes the rotating speed difference between the comparative tire, thereby reaches the purpose of monitoring tire pressure.But it can't situation and the speed of deficency be judged above 100 kilometers/hour situation simultaneously to two above tires.And direct-type monitoring tire pressure technology mainly is to utilize sensing transmitter directly to monitor tire pressure, and the mode of the pressure signal that spies out by transmission over radio sent on the reception telltale.This system mainly is comprised of three parts: sensing transmitter, receptor and telltale.This three's the purpose 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.

Domestic research for the TPMS technology still is in product to be improved and the market starting stage, 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 so domestic be in the research and development field or in market segment, 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, change original lithium cell energy supply equipment into the dependence internal mechanism and provide the energy for whole sensor, considerable realistic meaning and economic implications are arranged so undoubtedly.

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

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

And cross when low when pressure of tire, not only the noise of tire still exists, and greatly reduces on driving performance.When chaufeur was 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 understeer can appear when curved.In addition, the most important thing is that oil consumption improves greatly.Therefore, must actv. the tire pressure of tire be limited in the Applicable scope, improves 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 the applicable tire pressure, thereby prevent the generation of the situation of blowing out.

The technical scheme of this patent is:

A kind of 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, is provided with check valve group 4 between main tire 1 and the secondary tire 3, is provided with secondary tire check valve 5 on the secondary tire; Described check valve group 4 comprises check valve group between the opposite major-minor tire of two communication direction, 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 main tire 1 interior all wheel rims 2.

Wherein, described check valve group 4 technical schemes of 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

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

Be provided with the second valve pocket 25 in described the first spool 15, the second valve pocket 25 sidewalls are communicated with the first spool 15 main tire ends by the second air flue 16, top, the second valve pocket 25 chambeies is communicated with the first spool 15 secondary tire ends by the 3rd air flue 20, connect the second spool 18 by the second spring 17 at the bottom of the second valve pocket 25 chambeies, described the second spool 18 can endwisely slip along the second spring 17 the second valve pocket 25 is interior, so that the second air flue 16 is communicated with the 3rd air flue 20 or closed.

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

Wherein, described secondary tire check valve 5 technical schemes of 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 an end stretches in the secondary tire 3, and the other end is provided with valve gap 10; The end face that secondary tire valve body 7 stretches in the 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, so that air flue D6 is communicated with air flue A8, air flue B13 or closed.

Setting parameter is as follows in this patent:

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 when being main tire (1) safety traffic;

P _1minThe lower limit of standard tire pressure when being main tire (1) safety traffic;

P ₂Be 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 the service condition for check valve group (4), work as P ₁=P _1minThe time secondary tire real-time air pressure;

P _{2 (4)}In the service condition for check valve group (4), work as P ₁=P _1maxThe time secondary tire real-time air pressure;

X ₁₂Be 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 ₉Be P ₂Active area on spool A (9);

S ₁₅₁Be P ₁Active area on the first spool (15);

S ₁₅₂Be P ₂Active area on the first spool (15);

S ₁₈₁Be P ₁Active area on the second spool (18);

S ₁₈₂Be P ₂Active area on spool (18).

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

Description of drawings

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

Fig. 2 is that A-A and comprises the part sectional view of assembling check valve group position to cutaway view among Fig. 1;

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

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

Among the 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 description of drawings 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, is provided with check valve group 4 between main tire 1 and the secondary tire 3, is provided with secondary tire check valve 5 on the secondary tire; Described check valve group 4 comprises check valve group between the opposite major-minor tire of two communication direction, 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 main tire 1 interior all wheel rims 2.

As shown in Figure 1, main tire is the tire that travels, secondary tire structural arrangement is inboard at wheel rim, being close to wheel rim arranges in the form of a ring, utilize the check valve group to be connected between main tire and the secondary tire, 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 to be in the safe range all the time.

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

Embodiment 2:

For embodiment 1 further, described check valve group 4 technical schemes of 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

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

Be provided with the second valve pocket 25 in described the first spool 15, the second valve pocket 25 sidewalls are communicated with the first spool 15 main tire ends by the second air flue 16, top, the second valve pocket 25 chambeies is communicated with the first spool 15 secondary tire ends by the 3rd air flue 20, connect the second spool 18 by the second spring 17 at the bottom of the second valve pocket 25 chambeies, described the second spool 18 can endwisely slip along the second spring 17 the second valve pocket 25 is interior, so that the second air flue 16 is communicated with the 3rd air flue 20 or closed.

As shown in Figure 4, the function of main tire 1 is and realizes that normally travelling of automobile, its pressure are subject to the operating mode impact.And secondary tire 3 is not the tire that travels, the temperature rise pressure variation impact when not being subject to travel, and its inflated condition is the reasonable operation pressure operating mode of tire.Along with travelling of automobile, main tire 1 tire pressure can rise thereupon.When the air pressure of main tire 1 during far above the air pressure of secondary tire 3, the first spool 15 overcomes the application force of the first spring 21 under the high pressure gas effect, 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, then 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 certain tonifying Qi effect, thereby reaches the purpose of the main tire pressure of fine setting.

Embodiment 3:

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

As shown in Figure 3, described secondary tire check valve 5 technical schemes of 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 an end stretches in the secondary tire 3, and the other end is provided with valve gap 10; The end face that secondary tire valve body 7 stretches in the 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, so that air flue D6 is communicated with air flue A8, air flue B13 or closed.

The major cause of considering the accident of blowing out is that pressure of tire is unstable, and most cases be since pressure of tire too high due to, so we are by adding in addition check valve on secondary tire 3, portion gas are discharged the tire system of travelling, thereby prevents that the 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 mainly is to determine the designing requirement of elasticity modulus and the pre compressed magnitude of each check valve medi-spring by each known parameters.

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 ₁-main tire 1 actual tire pressure;

P _1max, P _1minThe upper and lower bound of standard tire pressure during-main tire 1 safety traffic;

P ₂-secondary tire 3 actual tire pressures;

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 _1minThe time secondary tire real-time air pressure, and P _2minP _{2 (2)}≤ P _2max

P _{2 (4)}In the service condition of-check valve group 4, work as P ₁=P _1maxThe time 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 spool 18.

After above-mentioned parameter was 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.

(annotate: 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) works as P ₂≤ P _2minThe time, check valve 5 must be in closure state;

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

(2) work as P _2min＜P ₂＜P _2maxThe time, the spool A9 in the check valve 5 begins mobile, but spool A9 does not reach opening;

(3) work as P ₂=P _2maxThe time, the spool A9 in the check valve 5 is critical opening;

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

(4) work as P ₂P _2maxThe time, check valve 5 is opened, and unnecessary gas outwards discharges always in system.

1. 2. the simultaneous formula tries to achieve:

${\mathrm{<figure-callout\; id="12"\; label="K"\; filenames="121227181720.png"\; state="\{\{state\}\}">K</figure-callout>}}_{12}\&le;\frac{(P_{2\max }-P_{2\min })S_9}{{\mathrm{<figure-callout\; id="12"\; label="X"\; filenames="121227181720.png"\; state="\{\{state\}\}">X</figure-callout>}}_{12}}$

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

Two, the service condition of check valve group 4

(1) works as P ₁＜P _1minThe time, the first spool 15 is fully closed, and the second spool 18 is opened fully, and secondary tire 3 is to main tire 1 make-up gas;

(2) work as P ₁=P _1minThe time,

The first spool 15 must be closure state:

P _1minS ₁₅₁K 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 _1maxThe time, the first spool 15 and the second spool 18 all can not opened, and main tire 1 tire pressure is in the safety tyre pressure scope of normally travelling;

(4) work as P ₁=P _1maxThe time,

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 ₁P _1maxThe time, the first spool 15 is opened, and the second spool 18 is fully closed, and main tire 1 is to the unnecessary gas of secondary tire 3 dischargings.3. 5. the 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. the 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 the parameter value scope in this patent is:

$K_{12}:{\mathrm{<figure-callout\; id="12"\; label="K"\; filenames="121227181720.png"\; state="\{\{state\}\}">K</figure-callout>}}_{12}\&le;\frac{(P_{2\max }-P_{2\min })S_9}{{\mathrm{<figure-callout\; id="12"\; label="X"\; filenames="121227181720.png"\; state="\{\{state\}\}">X</figure-callout>}}_{12}}$

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

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

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

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

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

Claims (6)

1. 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), be provided with check valve group (4) between main tire (1) and the secondary tire (3), be provided with secondary tire check valve (5) on the secondary tire; Described check valve group (4) comprises check valve group between the opposite major-minor tire of two communication direction, and described secondary tire check valve (5) only can be inner to outside unilaterally connected by secondary tire (3).

2. the explosion proof automobile tire based on major-minor tire structure according to claim 1 is characterized in that: secondary tire (3) is arranged on the inner side of all wheel rims (2) in the main tire (1).

3. the explosion proof automobile tire based on major-minor tire structure according to claim 1, it is characterized in that: 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

Be provided with the first valve pocket (24) and the first air flue (23) in the described valve body (14), 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), be provided with the first spool (15) in the first valve pocket (24), 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), so that the first air flue (23) is communicated with the first valve pocket top opening (19) or closure, the first valve pocket (24) bottom also is provided with pore (22) makes the first valve pocket (24) be communicated with secondary tire (3), the first spool (15) with the first valve pocket (24) air-tight fit so that pore (22) be not communicated with mutually with the first valve pocket top opening (19);

Be provided with the second valve pocket (25) in described the first spool (15), 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), connect the second spool (18) by the second spring (17) at the bottom of the second valve pocket (25) chamber, described the second spool (18) can endwisely slip along the second spring (17) in the second valve pocket (25), so that the second air flue (16) is communicated with the 3rd air flue (20) or closure.

4. the explosion proof automobile tire based on major-minor tire structure according to claim 3, it is characterized in that: described secondary tire check valve (5) is the spring loaded check valve.

5. the explosion proof automobile tire based on major-minor tire structure according to claim 4, it 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 an end stretches in the secondary tire (3), and the other end is provided with valve gap (10); The end face that secondary tire valve body (7) stretches in the 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), so that air flue D (6) is communicated with air flue A (8), air flue B (13) or closure.

6. the explosion proof automobile tire based on major-minor tire structure according to claim 5 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)

The pre compressed magnitude of the first spring (21)

Wherein:

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

P _1maxThe upper limit of standard tire pressure when being main tire (1) safety traffic;

P _1minThe lower limit of standard tire pressure when being main tire (1) safety traffic;

P ₂Be 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 the service condition for check valve group (4), work as P ₁=P _1minThe time secondary tire real-time air pressure;

P _{2 (4)}In the service condition for check valve group (4), work as P ₁=P _1maxThe time secondary tire real-time air pressure;

X ₁₂Be 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 ₉Be P ₂Active area on spool A (9);

S ₁₅₁Be P ₁Active area on the first spool (15);

S ₁₅₂Be P ₂Active area on the first spool (15);

S ₁₈₁Be P ₁Active area on the second spool (18);

S ₁₈₂Be P ₂Active area on spool (18).

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