CN108859619B - Automobile tire safety device and parameter setting method thereof - Google Patents
Automobile tire safety device and parameter setting method thereof Download PDFInfo
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- CN108859619B CN108859619B CN201810754784.5A CN201810754784A CN108859619B CN 108859619 B CN108859619 B CN 108859619B CN 201810754784 A CN201810754784 A CN 201810754784A CN 108859619 B CN108859619 B CN 108859619B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
- B60C17/04—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency
- B60C17/06—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency resilient
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Abstract
An automobile tire safety device and a parameter setting method thereof belong to the technical field of automobile tire explosion prevention. The purpose is in order to solve the problem that the current automobile tire safety device is little in the range of applicable motorcycle type. The outer diameter of the outer layer of the device is equal to the inner diameter of a tire, and the inner diameter of the inner layer is equal to the nominal diameter of a wheel rim; each layer is provided with through hexagonal holes along the radial direction of the tire, the hexagonal holes of each layer are arranged in a honeycomb shape, the hexagonal holes on the three layers are in one-to-one correspondence, the corresponding three hexagonal holes are communicated, and the side length of each hole on each surface from outside to inside is gradually reduced. The parameter setting method of the device comprises the following steps: and setting the outer surface structure parameters of the outer layer, and setting the surface structure parameters of the middle layer and the inner layer according to the outer surface structure parameters of the outer layer. The automobile tire safety device designed by the method has the advantages of wide applicable automobile types, convenient installation, convenient automobile maintenance, no influence on the comfort and the stability of automobile running, and effective reduction of traffic accidents caused by sudden tire burst in high-speed running.
Description
Technical Field
The invention belongs to the technical field of automobile tire explosion prevention, and particularly relates to an automobile tire safety device and a manufacturing technology thereof.
Background
With the rapid popularization of automobiles and the rapid development of highways, the tire burst of automobiles in high-speed running becomes a great important factor influencing traffic safety, and the accidents of vehicle damage and human death caused by the sudden tire burst in high-speed running in China account for 49.4 percent of all the accidents of highway traffic accidents every year according to statistics. Sudden tire burst of a high-speed running automobile is unpredictable and difficult to control, and becomes a first killer and a hidden killer during high-speed running. Because the accident of tire burst is accidental and unpredictable, once the driver of the tire burst happens, the driver often becomes scary and mishandling because of inexperience, so that the result of the accident is not obvious, and the death rate of the accident of tire burst is close to 90%.
At present, the number of products of the automobile equipped with the run flat tire on the market is small, wherein most of the equipped automobiles are high-end automobile types. The design of the domestic anti-explosion device has a plurality of defects, the applicability is not strong, and the repair and maintenance are inconvenient.
Disclosure of Invention
The invention aims to solve the problem that the existing automobile tire safety device is small in applicable automobile type range, and provides an automobile tire safety device and a parameter setting method thereof.
The invention relates to an automobile tire safety device, which comprises an outer layer, a middle layer and an inner layer which are concentrically arranged from outside to inside in sequence, wherein,
the outer diameter of the outer layer is equal to the inner diameter of the tire, and the inner diameter of the inner layer is equal to the nominal diameter of the rim;
the outer layer, the middle layer and the inner layer are all provided with through hexagonal holes along the radial direction of the tire, the hexagonal holes in each layer are arranged in a honeycomb shape, the hexagonal holes in the outer layer, the middle layer and the inner layer correspond to one another, three corresponding hexagonal holes are communicated, and the side length of the hexagonal hole in the outer layer outer surface is greater than that of the hexagonal hole in the outer layer inner surface, that of the hexagonal hole in the middle layer outer surface is greater than that of the hexagonal hole in the inner layer outer surface, that of the hexagonal hole in the inner layer outer surface is greater than that of the hexagonal hole in the inner layer inner surface.
The parameter setting method of the device comprises the following steps:
step 21, setting the maximum number of the hexagonal holes on the outer surface of the outer layer along the axial direction of the tire: n is 2-10;
Step 23, setting a hexagonal hole on the outer surface of the outer layer, which is closest to the end face of the automobile tire safety device, wherein the distance from the edge of the hexagonal hole to the end face of the automobile tire safety device is as follows: a is b-10 mm;
step 24, setting the vertical distance of two adjacent hexagonal holes on the outer surface of the outer layer along the outer circumference direction of the outer layer: d is bmm;
step 25, preliminarily calculating the side length of the hexagonal hole on the outer surface of the outer layer:
in the formula IwRounding to reserve a decimal number in mm, wherein B is the axial net size of the rim in mm;
step 26, primarily calculating the arc length between two adjacent hexagonal holes on the outer surface of the outer layer in the same circumferential direction:
wherein D is the inner diameter of the tire in mm;
step 27, calculating the number of rows of hexagonal holes on the outer surface of the outer layer in the circumferential direction:
in the formula, nlRounding to get the whole unit column;
step 28, calculating a final value of the arc length between two adjacent hexagonal holes on the outer surface of the outer layer in the same circumferential direction:
step 29, calculating the final value of the vertical distance of two adjacent hexagonal holes on the outer surface of the outer layer along the outer circumference direction of the outer layer:
step 210, calculating the final distance from the edge of the hexagonal hole closest to the end face of the automobile tire safety device on the outer surface of the outer layer to the end face of the automobile tire safety device:
step 3, setting surface structure parameters of the middle layer and the inner layer, and specifically comprising the following steps:
step 31, setting the distance between the corresponding edges of the hexagon on the outer surface of the middle layer and the hexagon on the inner surface of the outer layer: c is 1 to bmm;
step 32, setting the distance between the corresponding edges of the hexagon on the inner surface of the middle layer and the hexagon on the outer surface of the inner layer: c-6 mm;
step 33, checking whether the set c and e values satisfy the following conditions:
if not, resetting the values of c and e until the condition is met;
Step 35, setting the side length of the hexagon on the outer surface of the middle layer: lzsn＝lzsw-2ctan30°；
Step 36, setting the side length of the hexagon on the inner surface of the middle layer: lzxw＝lzsn-2ctan30°；
Step 37, setting the side length of the hexagon on the outer surface of the inner layer: lzxn＝lzxw-2etan30°；
Step 38, setting the side length of the hexagon on the inner surface of the inner layer: lnd＝lzxn-2etan30°。
According to the loading condition of sudden tire burst of a high-speed running automobile, the automobile tire safety device is sequentially divided into an outer layer, a middle layer and an inner layer from an outer circle to an inner circle by combining the bearing characteristic of a porous structure; preliminarily determining the outer surface structure parameters of the outer layer according to the inner diameter of the tire and the size of the rim, and deducing the structure parameters of other layers on the basis of the outer surface structure parameters of the outer layer; the automobile tire safety device designed according to the method is wide in applicable vehicle type, convenient and fast to install, convenient for automobile maintenance and repair, free of influence on the comfort and stability of automobile running, and capable of effectively reducing traffic accidents caused by sudden tire burst in high-speed running.
Drawings
Fig. 1 is a sectional view of a vehicle tire safety device according to a first embodiment; wherein, 1 is an outer circle, 2 is an inner circle, 3 is an outer layer, 4 is an intermediate layer, and 5 is an inner layer;
FIG. 2 is an enlarged view of the hexagonal holes in the outer, middle and inner layers of FIG. 1; wherein 6 is the outer layer outer surface, 7 is the outer layer inner surface hexagon, 8 is the intermediate layer outer surface, 9 is the intermediate layer outer surface hexagon, 10 is the intermediate layer inner surface hexagon, 11 is the intermediate layer inner surface, 12 is the inner layer outer surface hexagon, and 13 is the inner layer inner surface;
fig. 3 is a schematic view of the overall structure of the automobile tire safety device according to the first embodiment.
Detailed Description
The first embodiment is as follows: the present embodiment is described with reference to fig. 1 to 3, and a vehicle tire safety device according to the present embodiment includes an outer layer, an intermediate layer, and an inner layer, which are concentrically disposed in sequence from outside to inside,
the outer diameter of the outer layer is equal to the inner diameter of the tire, and the inner diameter of the inner layer is equal to the nominal diameter of the rim;
the outer layer, the middle layer and the inner layer are all provided with through hexagonal holes along the radial direction of the tire, the hexagonal holes in each layer are arranged in a honeycomb shape, the hexagonal holes in the outer layer, the middle layer and the inner layer correspond to one another, three corresponding hexagonal holes are communicated, and the side length of the hexagonal hole in the outer layer outer surface is greater than that of the hexagonal hole in the outer layer inner surface, that of the hexagonal hole in the middle layer outer surface is greater than that of the hexagonal hole in the inner layer outer surface, that of the hexagonal hole in the inner layer outer surface is greater than that of the hexagonal hole in the inner layer inner surface.
As shown in FIG. 2, the hexagon is preferably a regular hexagon, each hexagonal hole is integrally tapered, the outer end surface is slightly larger than the inner end surface, and the three communicating hexagonal holes are coaxial and are integrally tapered. The outer layer, the middle layer and the inner layer can be of an integrated structure and are manufactured by adopting a mold.
The specific structure of the outer layer is as follows:
maximum number of hexagonal holes on outer surface of outer layer: n is 2-10;
the distance between two adjacent hexagonal holes on the outer surface of the outer layer along the axial direction of the tire is as follows: b is 2-6 mm;
the length of the hexagonal hole is as follows:
wherein a is b-10 mm, lwRounding to reserve a decimal number in mm, wherein B is the axial net size of the rim in mm;
the number of rows of hexagonal holes in the circumferential direction of the outer surface of the outer layer is as follows:
wherein the content of the first and second substances,
d is the inner diameter of the tire in mm, nlRounding to get the whole unit column;
the arc length between two adjacent hexagonal holes on the outer surface of the outer layer in the same circumferential direction is as follows:
the vertical distance of two adjacent hexagonal holes on the outer surface of the outer layer along the circumferential direction is as follows:
the distance from the edge of a hexagonal hole closest to the end face of the automobile tire safety device on the outer surface of the outer layer to the end face of the automobile tire safety device is as follows:
the length of the hexagonal hole on the inner surface of the outer layer is as follows: lzsw＝lw-2ctan30 °, wherein c isDistance between the corresponding sides of the hexagon on the outer surface of the middle layer and the hexagon on the inner surface of the outer layer: c is 1 to bmm.
The specific structure of the intermediate layer is as follows:
distance between the corresponding sides of the hexagon on the inner surface of the middle layer and the hexagon on the outer surface of the inner layer: c-6 mm;
c. the value of e satisfies:
the length of the hexagonal hole on the outer surface of the middle layer is as follows: lzsn＝lzsw-2ctan30°；
The length of the hexagonal hole on the inner surface of the middle layer is as follows: lzxw＝lzsn-2ctan30°。
The specific structure of the inner layer is as follows:
the length of the edge of the hexagonal hole on the outer surface of the inner layer is as follows: lzxn＝lzxw-2etan30°；
The length of the edge of the hexagonal hole on the inner surface of the inner layer is as follows: lnd＝lzxn-2etan30°。
As shown in fig. 1 and 2, the inner surface of the outer layer overlaps the outer surface of the intermediate layer, and the inner surface of the intermediate layer overlaps the outer surface of the inner layer.
When the automobile tire safety device is used, the automobile tire safety device is directly sleeved on a rim, and the inner surface of the inner layer of the automobile tire safety device is directly contacted with the outer surface of the rim.
In the automobile tire safety device according to the embodiment, the outer surface structure parameters are determined according to the inner diameter of the tire and the size of the rim, and the intermediate layer and inner layer surface structure parameters are calculated based on the outer surface structure parameters of the outer layer, so that the automobile tire safety device is not limited by the automobile type, the size of the tire and the size of the rim, and the application range is wider.
The second embodiment is as follows: the present embodiment is described with reference to fig. 1 to 3, and the present embodiment is a method for setting parameters of an automobile tire safety device according to a first embodiment, including the steps of:
step 21, setting the maximum number of the hexagonal holes on the outer surface of the outer layer along the axial direction of the tire: n is 2-10;
Step 23, setting a hexagonal hole on the outer surface of the outer layer, which is closest to the end face of the automobile tire safety device, wherein the distance from the edge of the hexagonal hole to the end face of the automobile tire safety device is as follows: a is b-10 mm;
step 24, setting the vertical distance of two adjacent hexagonal holes on the outer surface of the outer layer along the outer circumference direction of the outer layer: d is bmm;
step 25, preliminarily calculating the side length of the hexagonal hole on the outer surface of the outer layer:
in the formula IwRounding to reserve a decimal number in mm, wherein B is the axial net size of the rim in mm;
step 26, primarily calculating the arc length between two adjacent hexagonal holes on the outer surface of the outer layer in the same circumferential direction:
wherein D is the inner diameter of the tire in mm;
step 27, calculating the number of rows of hexagonal holes on the outer surface of the outer layer in the circumferential direction:
in the formula, nlRounding to get the whole unit column;
step 28, calculating a final value of the arc length between two adjacent hexagonal holes on the outer surface of the outer layer in the same circumferential direction:
step 29, calculating the final value of the vertical distance of two adjacent hexagonal holes on the outer surface of the outer layer along the outer circumference direction of the outer layer:
step 210, calculating a hexagonal hole closest to the end face of the automobile tire safety device on the outer surface of the outer layer, wherein the final distance from the edge of the hexagonal hole to the end face of the automobile tire safety device is as follows:
step 3, setting surface structure parameters of the middle layer and the inner layer, and specifically comprising the following steps:
step 31, setting the distance between the hexagon of the outer surface of the middle layer and the hexagon of the inner surface of the outer layer: c is 1 to bmm;
step 32, setting the distance between the corresponding edges of the hexagon in the inner surface of the middle layer and the outer surface of the inner layer: c-6 mm;
step 33, checking whether the set c and e values satisfy the following conditions:
if not, resetting the values of c and e until the condition is met;
Step 35, setting the side length of the hexagon on the outer surface of the middle layer: lzsn＝lzsw-2ctan30°；
Step 36, setting the side length of the hexagon on the inner surface of the middle layer: lzxw＝lzsn-2ctan30°；
Step 37, setting the side length of the hexagon on the outer surface of the inner layer: lzxn＝lzxw-2etan30°；
Step 38, setting the side length of the hexagon on the inner surface of the inner layer: lnd＝lzxn-2etan30°。
In the method, the ratio of the radial length of each layer of the outer layer, the middle layer and the inner layer is 2:1:1, and the radial direction refers to the radial direction of the tire.
In the method, the cross sections of the holes in the outer layer, the middle layer and the inner layer are all regular hexagons.
The automobile tire safety device designed according to the method has the characteristic that the elasticity is exponentially reduced from the outer layer to the inner layer, so that the automobile tire safety device cannot influence the comfort of automobile running in the normal running process. When the automobile runs at high speed and suddenly blows out, the outer layer of the automobile tire safety device with high elasticity mainly plays a role in absorbing inertial impact, the middle layer not only absorbs the inertial impact but also plays a role in supporting, and the inner layer mainly plays a role in supporting the automobile.
The automobile tire safety device designed by the method can guarantee that the stability of the automobile body is kept and the automobile does not turn over when the automobile running at 120km/h suddenly blows out, and can support the automobile to continue running for 50km after the automobile blows out. After the automobile tire safety device is used after one-time tire burst, if the outer layer of the automobile tire safety device does not have large-area collapse or serious abrasion, the automobile tire safety device can be repeatedly used after detection.
The automobile tire safety device designed by the method can be suitable for all vehicles except special vehicles and trucks,
the method provided in the present embodiment is used to set parameters of a tire safety device for an automobile.
Setting conditions:
the tire parameters used for the tire safety device of an automobile are as follows: the internal diameter of the tyre is 540mm, the nominal diameter of the rim is 300mm, and the axial clear dimension of the rim is 150 mm.
Setting:
step 21, setting the maximum number of the outer surface axial hexagonal holes: n is 4;
step 23, setting the distance from the hexagonal hole on the outer surface of the outer layer to the end face of the automobile tire safety device: a is 3 mm;
step 24, setting the vertical distance in the circumferential direction of the hexagonal hole on the outer surface of the outer layer: d is 3 mm;
step 25, preliminarily calculating the side length of the hexagonal hole on the outer surface of the outer layer:
in the formula IwThe result of reserving one decimal for rounding, the rim axial clear dimension B is 50 mm;
step 26, primarily calculating the arc length between the hexagonal holes on the outer surface of the outer layer in the same circumferential direction:
wherein, the inner diameter D of the tire is 540 mm;
step 27, calculating the number of rows of hexagonal holes on the outer surface of the outer layer in the circumferential direction:
in the formula, nlRounding to the rounded result;
step 28, calculating the final value of the arc length between the hexagonal holes on the outer surface of the outer layer in the same circumferential direction:
step 29, calculating a final value of the vertical distance in the circumferential direction of the hexagonal hole on the outer surface of the outer layer:
step 210, calculating a final value of the distance from the hexagonal hole on the outer surface of the outer layer to the end surface of the tire support:
step 3, setting surface structure parameters of the middle layer and the inner layer:
step 31, setting the distance between the corresponding edges of the hexagon on the outer surface of the middle layer and the hexagon on the inner surface of the outer layer: c is 1 mm; step 32, setting the distance between the corresponding edges of the hexagon on the inner surface of the middle layer and the hexagon on the outer surface of the inner layer: e is 2 mm; step 33, checking whether the set values of c and e satisfy the condition:
the checking result is as follows: 27.75>17, 11.08<19.5, i.e. the values of c, e satisfy the above conditions.
step 35, setting the side length of the hexagon on the outer surface of the middle layer:
step 36, setting the side length of the hexagon on the inner surface of the middle layer:
step 37, setting the side length of the hexagon on the outer surface of the inner layer:
step 38, setting the side length of the hexagon on the inner surface of the inner layer:
the ratio of the radial lengths of the outer layer, the middle layer and the inner layer is 2:1:1, wherein the radial length of the outer layer is 120mm, the radial length of the middle layer is 60mm, and the radial length of the inner layer is 60 mm.
The cross sections of the holes in the outer layer, the middle layer and the inner layer are all regular hexagons.
All the structural parameters of the automobile tire safety device obtained by the method are as follows:
TABLE 1 summary table of structural parameters of automobile tire safety device
Wherein, the outer surface hexagon of intermediate level is outer surface hexagon, and the hexagon is intermediate level outer surface hexagon in the outer surface of intermediate level, and the outer surface hexagon of intermediate level is intermediate level inner surface hexagon, and the hexagon is inner surface hexagon in the inner surface of intermediate level.
Claims (8)
1. A safety device for automobile tires is characterized by comprising an outer layer, a middle layer and an inner layer which are concentrically arranged from outside to inside in sequence,
the outer diameter of the outer layer is equal to the inner diameter of the tire, and the inner diameter of the inner layer is equal to the nominal diameter of the rim;
the outer layer, the middle layer and the inner layer are all provided with through hexagonal holes along the radial direction of the tire, the hexagonal holes of each layer are arranged in a honeycomb shape, the hexagonal holes on the outer layer, the middle layer and the inner layer are in one-to-one correspondence, three corresponding hexagonal holes are communicated, and the side length of the hexagonal hole on the outer surface of the outer layer is greater than that of the hexagonal hole on the inner surface of the outer layer is greater than that of the hexagonal hole on the outer surface of the middle layer is greater than that of the hexagonal hole on the inner surface of the inner layer;
the specific structure of the outer layer is as follows:
maximum number of hexagonal holes on outer surface of outer layer: n is 2-10;
the distance between two adjacent hexagonal holes on the outer surface of the outer layer along the axial direction of the tire is as follows: b is 2-6 mm;
the length of the hexagonal hole is as follows:
wherein a is b-10 mm, lwRounding to reserve a decimal number in mm, wherein B is the axial net size of the rim in mm;
the number of rows of hexagonal holes in the circumferential direction of the outer surface of the outer layer is as follows:
wherein the content of the first and second substances,
d is the inner diameter of the tire in mm, nlRounding to get the whole unit column;
the arc length between two adjacent hexagonal holes on the outer surface of the outer layer in the same circumferential direction is as follows:
the vertical distance of two adjacent hexagonal holes on the outer surface of the outer layer along the circumferential direction is as follows:
the distance from the edge of a hexagonal hole closest to the end face of the automobile tire safety device on the outer surface of the outer layer to the end face of the automobile tire safety device is as follows:
the length of the hexagonal hole on the inner surface of the outer layer is as follows: lzsw＝lw-2ctan30 °, where c is the distance between the hexagon on the outer surface of the middle layer and the corresponding side of the hexagon on the inner surface of the outer layer: c is 1 to bmm.
2. The safety device for vehicle tires according to claim 1, characterized in that the hexagon is a regular hexagon.
3. The automobile tire safety device according to claim 1, wherein the specific structure of the intermediate layer is as follows:
distance between the corresponding sides of the hexagon on the inner surface of the middle layer and the hexagon on the outer surface of the inner layer: c-6 mm;
c. the value of e satisfies:
the length of the hexagonal hole on the outer surface of the middle layer is as follows: lzsn＝lzsw-2ctan30°；
The length of the hexagonal hole on the inner surface of the middle layer is as follows: lzxw＝lzsn-2ctan30°。
4. A vehicle tyre safety device according to claim 3, characterised in that the inner layer is of the following specific construction:
the length of the edge of the hexagonal hole on the outer surface of the inner layer is as follows: lzxn＝lzxw-2etan30°；
Inner layerThe length of the inner surface hexagonal hole is as follows: lnd＝lzxn-2etan30°。
5. The safety device for automobile tires according to claim 1, characterized in that the outer layer, the intermediate layer and the inner layer are of an integral structure.
6. A parameter setting method of an automobile tire safety device is characterized by comprising the following steps:
step 1, sequentially dividing an automobile tire safety device into three layers from outside to inside, namely an outer layer, a middle layer and an inner layer, wherein the outer diameter of the outer layer is equal to the inner diameter of a tire, and the inner diameter of the inner layer is equal to the nominal diameter of a rim;
step 2, setting the structural parameters of the outer surface of the outer layer, and specifically comprising the following steps:
step 21, setting the maximum number of the hexagonal holes on the outer surface of the outer layer along the axial direction of the tire: n is 2-10;
step 22, setting the distance between two adjacent hexagonal holes on the outer surface of the outer layer along the axial direction of the tire: b is 2-6 mm
Step 23, setting a hexagonal hole on the outer surface of the outer layer, which is closest to the end face of the automobile tire safety device, wherein the distance from the edge of the hexagonal hole to the end face of the automobile tire safety device is as follows: a is b-10 mm;
step 24, setting the vertical distance of two adjacent hexagonal holes on the outer surface of the outer layer along the outer circumference direction of the outer layer: d is bmm;
step 25, preliminarily calculating the side length of the hexagonal hole on the outer surface of the outer layer:
in the formula IwRounding to reserve a decimal number in mm, wherein B is the axial net size of the rim in mm;
step 26, primarily calculating the arc length between two adjacent hexagonal holes on the outer surface of the outer layer in the same circumferential direction:
wherein D is the inner diameter of the tire in mm;
step 27, calculating the number of rows of hexagonal holes on the outer surface of the outer layer in the circumferential direction:
in the formula, nlRounding to get the whole unit column;
step 28, calculating a final value of the arc length between two adjacent hexagonal holes on the outer surface of the outer layer in the same circumferential direction:
step 29, calculating the final value of the vertical distance of two adjacent hexagonal holes on the outer surface of the outer layer along the outer circumference direction of the outer layer:
step 210, calculating the final distance from the edge of the hexagonal hole closest to the end face of the automobile tire safety device on the outer surface of the outer layer to the end face of the automobile tire safety device:
step 3, setting surface structure parameters of the middle layer and the inner layer, and specifically comprising the following steps:
step 31, setting the distance between the corresponding edges of the hexagon on the outer surface of the middle layer and the hexagon on the inner surface of the outer layer: c is 1 to bmm;
step 32, setting the distance between the corresponding edges of the hexagon on the inner surface of the middle layer and the hexagon on the outer surface of the inner layer: c-6 mm;
step 33, checking whether the set c and e values satisfy the following conditions:
if not, resetting the values of c and e until the condition is met;
step 34, setting the side length of the hexagon on the inner surface of the outer layer: lzsw＝lw-2ctan30°；
Step 35, setting the side length of the hexagon on the outer surface of the middle layer: lzsn＝lzsw-2ctan30°；
Step 36, setting the side length of the hexagon on the inner surface of the middle layer: lzxw＝lzsn-2ctan30°；
Step 37, setting the side length of the hexagon on the outer surface of the inner layer: lzxn＝lzxw-2etan30°；
Step 38, setting the side length of the hexagon on the inner surface of the inner layer: lnd＝lzxn-2etan30°。
7. The method of claim 6, wherein the outer layer, the intermediate layer and the inner layer each have a radial length ratio of 2:1:1, the radial direction being the tire radial direction.
8. The method of claim 6 or 7, wherein the cross-sections of the holes in the outer layer, the intermediate layer and the inner layer are all regular hexagons.
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| CN202319747U (en) * | 2011-09-22 | 2012-07-11 | 吕国才 | Anti-explosion charging-free wheel inner tube |
| CN103587355A (en) * | 2013-06-20 | 2014-02-19 | 厦门连科工业有限公司 | Solid tyre structure |
| CN105882319A (en) * | 2014-10-07 | 2016-08-24 | 邵再禹 | Method for designing honeycomb-shaped non-pneumatic tyre |
| CN204915128U (en) * | 2015-09-11 | 2015-12-30 | 黑龙江工程学院 | Circumference length of side geometric proportion honeycomb tire |
| CN108081872A (en) * | 2018-01-24 | 2018-05-29 | 南京理工大学 | Non-inflatable tyre based on indent hexagon negative poisson's ratio support construction |
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