阅读说明：本技术 一种仿生免充气轮胎 (Bionic inflation-free tire ) 是由 李红卫 吴长辉 顾培霜 薛伯勇 于 2021-01-26 设计创作，主要内容包括：本发明属于轮胎技术领域。针对现有的免充气轮胎存在的减震性能差、噪声大的问题,本发明提供一种仿生免充气轮胎,由外到内依次包括胎面、连接层、仿生缓冲结构及安装体,仿生缓冲结构包括仿猫科动物的后肢的Z形缓冲板、蜂窝状弹性体、第一外圈和第一内圈,Z形缓冲板、第一外圈和第一内圈之间的区域填充蜂窝状弹性体,自第一内圈至第一外圈蜂窝状弹性体的孔由小逐渐变大。通过Z形缓冲结构和菱形蜂窝结构,使轮胎既能够对大振动进行有效缓冲,又能够对小振动进行有效缓冲,打破风噪频率降低免充气轮胎风噪,避免单一结构自身由于强度不足导致发生永久形变的问题。(The invention belongs to the technical field of tires. The bionic inflation-free tire comprises a tire tread, a connecting layer, a bionic buffering structure and an installation body from outside to inside in sequence, wherein the bionic buffering structure comprises a Z-shaped buffering plate imitating hind limbs of a feline, a honeycomb-shaped elastic body, a first outer ring and a first inner ring, the honeycomb-shaped elastic body is filled in an area among the Z-shaped buffering plate, the first outer ring and the first inner ring, and holes from the first inner ring to the first outer ring are gradually enlarged. Through Z shape buffer structure and rhombus honeycomb, make the tire can enough effectively cushion big vibration, can effectively cushion again little vibration, break wind noise frequency and reduce and exempt from pneumatic tire wind noise, avoid single structure self because the not enough problem that leads to taking place permanent deformation of intensity.)

1. A bionic inflation-free tire is characterized by comprising a tire tread, a connecting layer, a bionic buffer structure and a mounting body from outside to inside in sequence, the surface of the tread, which is directly contacted with the ground, is provided with tire patterns, the tread is tightly connected with the bionic buffer structure through a connecting layer, the tire is fixedly connected with a vehicle through a mounting body, the bionic buffer structure comprises a Z-shaped buffer plate imitating hind limbs of a feline, a honeycomb-shaped elastomer, a first outer ring and a first inner ring, the Z-shaped buffer plates are radially distributed in an annular area between the first outer ring and the first inner ring, cellular elastic bodies are filled in the areas among the Z-shaped buffer plates, the first outer ring and the first inner ring, the holes from the first inner ring to the first outer ring are gradually enlarged, the tread, the connecting layer, the bionic buffer structure and the mounting body are tightly connected into a whole.

2. The bionic non-pneumatic tire as claimed in claim 1, wherein an adaptive buffer structure is further arranged between the bionic buffer structure and the mounting body, the adaptive buffer structure is composed of an I-shaped buffer plate, a second outer ring and a second inner ring, the I-shaped buffer plate is radially distributed in an annular region between the second outer ring and the second inner ring, the I-shaped buffer plate is arranged obliquely relative to the second inner ring, and the inclination direction of the I-shaped buffer plate is consistent with the inclination direction of the middle section of the Z-shaped buffer plate.

3. The biomimetic airless tire of claim 2, wherein the number of I-shaped bumper plates is the same as the number of Z-shaped bumper plates.

4. The bionic non-pneumatic tire as claimed in claim 1, wherein the Z-shaped buffer plate has an inner angle Ra2 close to the first outer ring of 5-120 degrees and an inner angle Ra3 close to the second outer ring of 5-120 degrees.

5. The bionic non-pneumatic tire as claimed in claim 1, wherein the Z-shaped buffer plate and the I-shaped buffer plate are both thermoplastic elastomers.

6. The biomimetic airless tire of claim 1, wherein the cellular elastomer is a diamond-shaped cellular elastomer.

7. The biomimetic airless tire defined in claim 1, wherein the tread is a nano rubber layer.

8. The bionic non-pneumatic tire as claimed in claim 2, wherein the thickness of the Z-shaped buffer plate is 0.5mm-20mm, and the distance from the inflection point of the Z-shaped buffer plate close to the first outer ring is 5-110 mm; the distance from the inflection point of the Z-shaped buffer plate close to the first inner ring to the second outer ring is 5-110 mm.

9. The bionic non-pneumatic tire as claimed in claim 2, wherein the thickness of the I-shaped buffer plate is 6-60mm, and the included angle of the I-shaped buffer plate relative to the tire circumference is 0-60 °.

Technical Field

The invention belongs to the technical field of tires, and particularly relates to a bionic inflation-free tire.

Background

The tires in common use for vehicles have long been pneumatic tires, and the superior cushioning properties and low rolling resistance characteristics of pneumatic tires have not been surpassed by other tires to date. However, the pneumatic tire requires regular maintenance of tire pressure, is prone to puncture and air leakage, and has serious tire burst consequences. The non-pneumatic tire, that is, the non-pneumatic tire, does not rely on air, and only uses the material and structure of the tire to realize the supporting and buffering performance, such as solid tire, spring tire, buffer tire, etc. However, the existing inflation-free tires generally have the defects of poor comfort performance, weak shock absorption capacity, large noise and high oil consumption, so that the inflation-free tires are difficult to popularize and apply in the field of civil tires.

The application number 201921964609.5 discloses a bionic non-pneumatic tire, which comprises a tire crown, a bionic spoke plate support body and a spoke plate inner ring, wherein the bionic spoke plate support body is designed to simulate a kangaroo lower limb structure. The bionic tire improves the damping characteristic of the non-pneumatic tire to a certain extent, but the damping effect is still far away from that of the pneumatic tire, and the noise, rolling resistance and comfort cannot meet the requirements of people.

Disclosure of Invention

Aiming at the problems of poor damping performance and high noise of the conventional non-pneumatic tire, the invention provides the bionic non-pneumatic tire, which can effectively buffer large vibration and small vibration through a Z-shaped buffer structure and a rhombic honeycomb structure, break wind noise frequency, reduce wind noise of the non-pneumatic tire and avoid the problem of permanent deformation of a single structure due to insufficient strength.

The invention is realized by the following technical scheme:

the utility model provides a bionical pneumatic tire of exempting from, by outer to interior tread, articularly connecting layer, bionical buffer structure and the installation body of including in proper order, be equipped with the tire decorative pattern on the face of tread direct and ground contact, the tread passes through articularly connecting layer zonulae occludens with bionical buffer structure, the tire is through installation body and vehicle fixed connection, bionical buffer structure includes Z shape buffer board, cellular elastomer, first outer lane and the first inner circle of imitative feline's hind limb, Z shape buffer board is radial distribution in the annular region between first outer lane and first inner circle, and cellular elastomer is filled in the region between Z shape buffer board, first outer lane and the first inner circle, and by little grow gradually in the hole from first inner circle to the cellular elastomer of first outer lane, zonulae occludens becomes a whole between tread, connecting layer, bionical buffer structure and the installation body.

Further, still set up self-adaptation buffer structure between bionic buffer structure and the installation body, self-adaptation buffer structure comprises I shape buffer board, second outer lane and second inner circle, I shape buffer board is radial distribution in the annular region between second outer lane and second inner circle, I shape buffer board sets up for the slant of second inner circle, and its incline direction is unanimous with the incline direction in Z shape buffer board middle section.

Further, the number of the I-shaped buffer plates is the same as that of the Z-shaped buffer plates.

Further, the inner angle of the Z-shaped buffer plate close to the first outer ring is 5-120 degrees, preferably 30-70 degrees, and more preferably 50-60 degrees; the inner angle near the second outer ring is 5-120 deg., preferably 30-70 deg., more preferably 40-50 deg

Furthermore, the Z-shaped buffer plate and the I-shaped buffer plate are both thermoplastic elastomers.

Further, the honeycomb elastomer is a rhombic honeycomb elastomer.

Further, the tire tread is a nanometer rubber layer.

Further, the thickness of the Z-shaped buffer plate is 0.5mm-20mm, preferably 5-15mm, and more preferably 8-12 mm; the distance from the inflection point of the Z-shaped buffer plate close to the first outer ring is 5-110mm, preferably 30-90mm, and more preferably 80 mm; the distance from the inflection point of the Z-shaped buffer plate close to the first inner ring to the second outer ring is 5-110mm, preferably 30-80mm, and more preferably 60 mm.

Further, the thickness of the I-shaped buffer plate is 1-30mm, preferably 5-25mm, more preferably 10-15mm, and the included angle of the I-shaped buffer plate with respect to the tire circumferential line is 0-60 °, preferably 20-40, more preferably 25 °.

Compared with the prior art, the invention has the beneficial effects that:

by combining the Z-shaped buffer structure and the honeycomb structure, the tire can effectively buffer large vibration and small vibration, so that the control performance of the tire is improved under the conditions of rapid turning, tunnel passing, concave-convex road surface and the like; secondly, the structural strength between the whole-circle Z-shaped buffer structures is enhanced, the problem that a single structure is permanently deformed due to insufficient strength is solved, and the radial rigidity and the circumferential rigidity of the non-pneumatic tire in a high-speed state are improved; thirdly, wind noise frequency is broken, and wind noise of the non-pneumatic tire is reduced.

Drawings

FIG. 1 is a perspective view of a bionic non-pneumatic tire of example 1;

FIG. 2 is a schematic side view of a bionic non-pneumatic tire of example 1;

FIG. 3 is a cross-sectional view A-A of the bionic non-pneumatic tire of example 1;

FIG. 4 is a schematic representation of a diamond honeycomb elastomer of example 1;

FIG. 5 is a perspective view of a bionic non-pneumatic tire of example 2;

FIG. 6 is a schematic side view of a bionic non-pneumatic tire of example 2;

FIG. 7 is a cross-sectional view taken along line A-A of the bionic non-pneumatic tire of example 2;

fig. 8 is a partial schematic view of the bionic non-pneumatic tire in the embodiment 2.

In the above figures: 1. a tread; 2. a connecting layer; 3. a Z-shaped buffer plate; 4. a diamond honeycomb elastomer; 41. a hollow region of a rhombohedral honeycomb elastomer; 5. a first outer race; 6. a first inner race; 7. an installation body; 8. an I-shaped buffer plate; 81. a hollow region between the I-shaped buffer plates; 9. a second outer race; 10. a second inner race.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments and the accompanying drawings.

Example 1

As shown in figure 1, the bionic inflation-free tire sequentially comprises a tire tread 1, a connecting layer 2, a bionic buffering structure and a mounting body 7 from outside to inside, and all the parts are tightly connected into a whole. The tread 1 is in direct contact with the ground and is provided with a tread pattern on its surface. The tread 1 is preferably a nano rubber layer. The connecting layer 2 is made of bonding materials and tightly connects the tire tread 1 with the bionic buffer structure. The mounting body 7 is a mounting piece of a tire, and the bionic tire is fixedly connected with a vehicle through the mounting body 7.

As shown in fig. 2, the bionic buffer structure is composed of a Z-shaped buffer plate 3 imitating hind limbs of a feline, a rhombic honeycomb-shaped elastic body 4, a first outer ring 5 and a first inner ring 6. The first outer ring 5 is tightly attached to the connecting layer 2, the first inner ring 6 is tightly attached to the mounting body 7, an annular area is formed between the first outer ring 5 and the first inner ring 6, and the Z-shaped buffer plate 3 is radially distributed in the annular area along the first inner ring 6. The area among the Z-shaped buffer plate 3, the first outer ring 5 and the first inner ring 6 is filled with the rhombic honeycomb-shaped elastic body 4. The Z-shaped buffer plate and the I-shaped buffer plate are both thermoplastic elastomers. The honeycomb size diagram of the rhombic honeycomb elastic body 4 is shown in fig. 4, the rhombic honeycomb slow elastic body 4 is composed of elastic sheets with different angles and different sizes, the size of the hole of the rhombic honeycomb elastic body is gradually increased from the first inner ring 6 to the first outer ring 5, and the density of the corresponding elastic body material is gradually decreased from the large. More preferably, the diamond-shaped cells have the same size in the tire radial direction, and the size in the tire circumferential direction is gradually increased from the first inner ring 6 to the first outer ring 5.

Z type buffer board 3 has good shock-absorbing capacity to great vibration and tire striking to can resume the shape fast, but to the little vibration because Z type buffer board 4 self structural strength's support requirement, shock-absorbing capacity is relatively poor, and can compensate this defect just through filling honeycomb buffering elastomer 4 between Z type buffer board 3. And the cellular elastomer with gradually changed hole sizes can keep the linear vibration absorption of the inflation-free tire and improve the comfort of the tire.

Compared with a single bionic buffer structure, the Z-shaped bionic buffer structure is combined with the honeycomb buffer structure design, and the wind noise frequency is broken during the driving of the non-pneumatic tire, so that the wind noise of the non-pneumatic tire is reduced. And the safety hazard caused by the inclusion of sundries during the running of the vehicle can be avoided.

The tire is particularly suitable for large-size tires with the size of 17 inches and above 17 inches. The large-size non-pneumatic tire is generally arranged on a vehicle with higher vehicle weight and performance, has large load and high speed level and needs to be assembled with a rim for use.

The production method comprises the following steps:

the bionic inflation-free tire is introduced into a special 3D printer for printing production through a tire three-dimensional model designed in a three-dimensional parameterization mode. The tire can also be produced by traditional tire equipment and a specially designed tire mold, and the specific procedures of the production are divided into tire buffer body forming, tread rubber material extruding and inflation-free tire bonding forming.

Example 2

As shown in fig. 5, the bionic inflation-free tire comprises a tread, a connecting layer, a bionic buffer structure, a self-adaptive buffer structure and an installation body from outside to inside in sequence. Compared with the embodiment 1, the bionic inflation-free tire is added with an adaptive buffer structure.

The tread, tie layer and adaptive cushioning structure are similar to those of example 1.

As shown in fig. 6, the adaptive damping structure is composed of an I-shaped damping plate 8, a second outer ring 9 and a second inner ring 10, the second outer ring 9 is tightly attached to the first inner ring 6, the second inner ring 10 is tightly attached to the mounting body 7, an annular region is formed between the second outer ring 9 and the second inner ring 10, the I-shaped damping plate 8 is radially distributed in the annular region along the second inner ring 10, the I-shaped damping plate 8 is obliquely arranged relative to the second inner ring 10, and the inclination direction of the I-shaped damping plate 8 is consistent with the inclination direction of the middle part of the Z-shaped damping plate 3.

Preferably, the number of the I-shaped buffer plates 8 is the same as that of the Z-shaped buffer plates 3, and preferably, all of the I-shaped buffer plates are made of elastomer materials. The Z-shaped buffer plates 3 correspond to the I-shaped buffer plates 8 one by one to form an M-shaped buffer structure, so that the buffer performance of the tire is further improved.

Preferably, the inner angle Ra2 of the Z-shaped baffle 3 adjacent to the first outer ring 5 is 55 °; the interior angle Ra3 adjacent the second outer turn 6 is 45 °. The thickness D of the Z-shaped buffer plate is 15mm, the distance D1 from the inflection point of the Z-shaped buffer plate close to the first outer ring is 80mm, the distance D2 from the inflection point of the Z-shaped buffer plate close to the first inner ring to the second outer ring is 60mm, the thickness W1 of the I-shaped buffer plate is 25mm, and the included angle Ra1 of the I-shaped buffer plate relative to the tire circumference is 25 degrees. In order to clearly show the structure, a plurality of complete Z-shaped buffer plates and I-shaped buffer plates are selected in FIG. 8, and the rhombic honeycomb elastic bodies and the rest Z-shaped buffer plates and I-shaped buffer plates are omitted.

The tire is particularly suitable for small-sized tires with the size below 17 inches. The small-size inflation-free tire has high requirement on comfort, and the bionic buffer structure and the self-adaptive buffer structure can improve the comfort of the small-size inflation-free tire and reduce the generation cost.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.