CN213831236U

CN213831236U - Non-pneumatic tire

Info

Publication number: CN213831236U
Application number: CN202022699256.XU
Authority: CN
Inventors: 陈国珍
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-07-30
Anticipated expiration: 2030-11-19

Abstract

The utility model relates to an inflation-free tire relates to the field of tire, has solved when the cover tire is stabbed, injures the inner tube of a tyre, takes place the flat child's of gas leakage condition easily, and when the inner tube of a tyre inflates excessively, still takes place the condition of blowing out easily, just can continue to use after needing to repair the change, uses troublesome problem, and it includes that two casings support casing supporting part, a crown of a tyre child crown buffering portion and a root of a tyre, the root of a tyre supports casing supporting part, crown of a tyre crown buffering portion, casing support casing supporting part and connects gradually and form airtight cavity with the casing. The tire has the advantages that the tire is not easy to shrink and burst when in use, and the use is more convenient.

Description

Non-pneumatic tire

Technical Field

The present application relates to the field of tires, and more particularly, to an inflation-free tire.

Background

The tyre is a generic name of tyre, is usually made of wear-resistant rubber material, and is divided into a solid tyre and an inflatable tyre, wherein the inflatable tyre consists of an inner tyre and an outer tyre.

In the related art, a conventional pneumatic tire for vehicles is composed of an outer tube and a closed-type circular-ring-shaped pneumatic inner tube. In the installation state when in use, the inner tube is wrapped by the outer tube and is embedded on the rim by inflation to form a wheel assembly.

In view of the above-mentioned related arts, the inventor believes that when the outer tube is punctured or damaged, the flat tube is likely to be deflated, and when the inner tube is excessively inflated, the flat tube is also likely to be punctured, and the flat tube needs to be repaired and replaced before being used, which is troublesome in use.

SUMMERY OF THE UTILITY MODEL

In order to prevent the tire from being flat or flat when in use, the application provides the non-pneumatic tire.

The application provides an exempt from pneumatic tire adopts following technical scheme:

the utility model provides an exempt from pneumatic tire, includes two casing supporting parts, a child crown buffer and a child root, the child root connects gradually with casing supporting part, child crown buffer, casing supporting part and forms airtight cavity.

Through adopting above-mentioned technical scheme, the tire provides the holding power by child root and casing when using, provides the buffer power by child crown buffer, has realized that the tire need not to inflate when using for the tire is difficult for taking place flat child and blowing out when using, and it is more convenient to use.

Optionally, still include at least one and inlay the support ring of locating in airtight cavity, the inside wall of support ring sets up with the lateral wall of child root is integrative, the lateral wall of support ring sets up with the inside wall of child crown buffer, with the bisector of the perpendicular child root of child root axis bisects at least one the support ring.

Through adopting above-mentioned technical scheme, the setting of support ring provides the support for the middle part of child hat buffer portion, has improved the buffer capacity of child hat buffer portion for the tire can bear bigger pressure, has shared the holding power of casing simultaneously, makes the casing be difficult for frequently warping and damage, has improved the life of tire.

Optionally, the number of the support rings is two.

Through adopting above-mentioned technical scheme, two support rings provide bigger holding power for a support ring for the child hat buffer, make the middle part of child hat buffer take place elastic deformation more easily when for a support ring simultaneously, provide the buffer capacity of tire child hat buffer.

Optionally, the openings of the two support rings on the side close to the tire root are smaller than the openings of the two support rings on the side far from the tire root.

Optionally, the openings of the two support rings on the side close to the tire root are larger than the openings of the two support rings on the side far from the tire root.

Optionally, the radial cross section of the support ring is arranged in a wave shape.

Optionally, the radial cross section of the support ring is arranged linearly.

Optionally, the number of the support rings is one, and the radial cross section of each support ring is linearly arranged.

In summary, the present application includes at least one of the following beneficial technical effects:

the inflation is not needed when the tire is used, so that the tire is not easy to shrink or burst when in use, and the use is more convenient.

Drawings

Fig. 1 is a schematic full-section view of a non-pneumatic tire according to example 1 of the present application.

Fig. 2 is an exploded schematic view of a die assembly of the compound extruder of example 1 of the present application.

Fig. 3 is a view in the direction a of the assembled die assembly of the compound extruder of example 1 of the present application.

Fig. 4 is a schematic full-section view of a non-pneumatic tire according to embodiment 2 of the present application.

Fig. 5 is a schematic full-section view of a non-pneumatic tire according to embodiment 3 of the present application.

Fig. 6 is a schematic full-section view of a non-pneumatic tire according to embodiment 4 of the present application.

Description of reference numerals: 11. a carcass support portion; 12. a crown cushion section; 13. a fetal root; 14. sealing the cavity; 15. and (3) supporting the ring.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

Example 1:

the embodiment of the application discloses a non-pneumatic tire. Referring to fig. 1, the non-pneumatic tire includes a carcass support 11, a crown cushion 12, and a bead root 13.

The number of the tire root 13 and the number of the tire crown buffer part 12 are both one, the number of the tire body supporting parts 11 is two, and the tire root 13, the tire body supporting parts 11, the tire crown buffer part 12 and the tire body supporting parts 11 are sequentially connected to form a closed cavity 14; the raw materials of the tyre root 13 and the tyre body supporting part 11 comprise 17.3-19.3 parts of natural rubber, 26.5-28.5 parts of synthetic rubber, 0.8-1.3 parts of coumarone, 0.5-0.9 part of sulfur, 1.6-2.1 parts of zinc oxide, 0.4-0.6 part of stearic acid, 0.9-1.3 parts of accelerator, 41.5-42.5 parts of carbon black, 3-7 parts of engine oil, 0.6-1 part of anti-aging agent and 0.2-0.4 part of paraffin; in the example, the natural rubber is 18.3 parts, the synthetic rubber is 27.5 parts, the coumarone is 1 part, the sulfur is 0.7 part, the zinc oxide is 1.8 parts, the stearic acid is 0.5 part, the accelerator is 1.1 part, the carbon black is 43 parts, the engine oil is 5 parts, the anti-aging agent is 0.8 part, and the paraffin is 0.3 part; wherein the synthetic rubber comprises butadiene styrene rubber 1502, synthetic rubber 1712 and butadiene rubber 9000, the butadiene styrene rubber 1502 is 7.2 parts, the synthetic rubber 1712 is 9.3 parts, and the butadiene rubber 9000 is 11 parts; the accelerant comprises CZ and DM, wherein CZ is 1 part, DM is 0.1 part; the carbon black comprises N330 and N220, wherein the N330 is 21.5 parts, and the N220 is 21.5 parts; the anti-aging agent comprises 4010, RD and CTU, wherein 4010.2 parts, RD 0.2 parts and CTU 0.4 parts; the hardness of the root 13 and the casing support 11 is 80 degrees to 90 degrees, and the hardness of the root 13 and the casing support 11 is 85 degrees in this embodiment, so as to provide the support force for the tire.

The raw materials of the crown buffer part 12 comprise 22.2-24.2 parts of natural rubber, 34.1-36.1 parts of synthetic rubber, 1-1.6 parts of coumarone, 0.6-1.1 parts of sulfur, 2-2.6 parts of zinc oxide, 0.5-0.9 part of stearic acid, 1-1.6 parts of accelerator, 25-30 parts of carbon black, 1-5 parts of engine oil, 1-1.4 parts of anti-aging agent and 0.2-0.6 part of paraffin; in the example, 23.2 parts of natural rubber, 35.1 parts of synthetic rubber, 1.2 parts of coumarone, 0.9 part of sulfur, 2.3 parts of zinc oxide, 0.7 part of stearic acid, 1.4 parts of accelerator, 27 parts of carbon black, 3 parts of engine oil, 1.1 parts of anti-aging agent and 0.4 part of paraffin wax; the synthetic rubber comprises styrene butadiene rubber 1502, synthetic rubber 1712 and butadiene rubber 9000, wherein the styrene butadiene rubber 1502 accounts for 9.2 parts, the synthetic rubber 1712 accounts for 11.9 parts, and the butadiene rubber 9000 accounts for 14 parts; the accelerant comprises CZ and DM, wherein CZ is 1.2 parts, and DM is 0.2 part; the anti-aging agent comprises 4010, RD and CTU, wherein the 4010 is 0.275 parts, the RD is 0.275 parts, and the CTU is 0.55 parts; the hardness of the crown buffer part 12 is 65-75 degrees, and the hardness of the crown buffer part 12 is 70 degrees in the embodiment, so that the crown buffer part 12 keeps enough wear resistance and elasticity, and the service life and the buffer capacity of the tire are improved.

The inflation-free tire also comprises at least one support ring 15, the support ring 15 is embedded in the closed cavity 14, the support ring 15 and the tire are concentrically arranged, the inner side wall of the support ring 15 and the outer side wall of the tire root 13 are integrally arranged, and the outer side wall of the support ring 15 and the inner side wall of the tire crown buffer part 12 are integrally arranged to provide supporting force and buffering force for the tire crown buffer part 12; the bisected surface of the tire root 13 perpendicular to the axis of the tire root 13 equally divides at least one supporting ring 15, so that the stress of the tire is balanced when in use; in this embodiment, the number of the support rings 15 is two, the radial cross section of the support ring 15 is linearly arranged, and the two support rings 15 are arranged obliquely outward from the bead 13 to the crown cushion portion 12.

The hardness of the support ring 15 is 80-90 degrees, and in the embodiment, the hardness of the support ring 15 is 85 degrees; the raw materials of the support ring 15 comprise 17.3-19.3 parts of natural rubber, 26.5-28.5 parts of synthetic rubber, 0.8-1.3 parts of coumarone, 0.5-0.9 part of sulfur, 1.6-2.1 parts of zinc oxide, 0.4-0.6 part of stearic acid, 0.9-1.3 parts of accelerator, 41.5-42.5 parts of carbon black, 3-7 parts of engine oil, 0.6-1 part of anti-aging agent and 0.2-0.4 part of paraffin; in the example, the natural rubber is 18.3 parts, the synthetic rubber is 27.5 parts, the coumarone is 1 part, the sulfur is 0.7 part, the zinc oxide is 1.8 parts, the stearic acid is 0.5 part, the accelerator is 1.1 part, the carbon black is 43 parts, the engine oil is 5 parts, the anti-aging agent is 0.8 part, and the paraffin is 0.3 part; wherein the synthetic rubber comprises butadiene styrene rubber 1502, synthetic rubber 1712 and butadiene rubber 9000, the butadiene styrene rubber 1502 is 7.2 parts, the synthetic rubber 1712 is 9.3 parts, and the butadiene rubber 9000 is 11 parts; the accelerant comprises CZ and DM, wherein CZ is 1 part, DM is 0.1 part; the carbon black comprises N330 and N220, wherein the N330 is 21.5 parts, and the N220 is 21.5 parts; the anti-aging agent comprises 4010, RD and CTU, wherein the 4010 is 0.2 part, the RD is 0.2 part, and the CTU is 0.4 part.

The embodiment of the application also discloses a processing technology of the inflation-free tire, which comprises the following steps,

s1, preparing a base 13 rubber material;

s2, preparing a tire crown buffer part 12 rubber material;

s3, extruding the rubber compound of the tire root 13 and the rubber compound of the tire crown buffer part 12 through an extruder to form a composite rubber pipe;

s4, cutting the composite rubber tube with a fixed length according to the diameter size of the tire, and butting the two ends of the composite rubber tube with the fixed length together to form an annular tire blank;

and S5, putting the annular tire blank into a tire mold for vulcanization, opening the mold after vulcanization, and taking out the finished tire product.

The rubber material of the tire root 13 is the same as the raw materials of the tire root 13 and the tire body supporting part 11, and the rubber material of the tire root 13 is used for extrusion molding of the tire root 13, the tire body supporting part 11 and the supporting ring 15; the tire crown buffer part 12 is made of the same rubber material as the tire crown buffer part 12, and the tire crown buffer part 12 is used for extruding the tire crown buffer part 12.

When the composite hose is extruded, a composite extruder, i.e., a double-material-channel composite extruder of the composite extruder in this embodiment, is used.

Referring to fig. 2 and 3, the die assembly 2 of the compound extruder includes a first die 21 and a second die 22, and both the first die 21 and the second die 22 are in a disc shape; a first forming hole 211 is formed in the first mold 21, the first forming hole 211 is used for extruding and forming strips of the tire root 13, the two tire roots 13 and the two support rings 15, the second mold 22 and the first mold 21 are arranged concentrically, a through second forming hole 221 is formed in the second mold 22, a forming block 212 is integrally formed at one end, close to the second mold 22, of the first mold 21, the forming block 212 penetrates through the second forming hole 221, and the forming block 212 and the second forming hole 221 are matched to form holes for extruding and forming the tire root 13, the two tire roots 13, the two support rings 15 and the one tire root 13; a trough 213 is arranged at one end of the first mold 21 close to the second mold 22, one end of the trough 213 penetrates through the outer side wall of the first mold 21, a distributing trough 214 is arranged at one end of the first mold 21 close to the second mold 22, the size of the distributing trough 214 is larger than that of the cross section of the crown buffer part 12, and the distributing trough 214 is communicated with the other end of the material channel, so that rubber can flow into the distributing trough 214 through the material channel and is extruded to form the crown buffer part 12 through a gap between the forming block 212 and the second forming hole 221; still integrative fender piece 215 that is equipped with on the first mould 21, fender piece 215 is located the branch silo 214 and is relative with the other end of material way, and the equal fender piece 215 of extension line of material way to make sizing material can evenly fill in branch silo 214 under the effect of fender piece 215 when the material says that to flow in branch silo 214, and then extrude the more even crown buffer 12 of shaping through the gap of shaping piece 212 and second shaping hole 221.

During extrusion, the first mold 21 and the second mold 22 are tightly attached, the molding block 212 is inserted into the second molding hole 221, one end of the first mold 21, which is far away from the second mold 22, is communicated with one material channel of the composite extruder, the trough 213 of the first mold 21 is communicated with the other material channel of the composite extruder, and then rubber materials corresponding to the two material channels are filled into the reciprocating composite extruder, so that the composite rubber pipe in the step S3 can be extruded.

Putting the annular tire blank into a tire mold for vulcanization, wherein the temperature in the tire mold is 150-160 ℃, the mold closing pressure is 16MPa, and the pressure maintaining pressure is 1.2-2 MPa.

The implementation principle of the processing technology of the inflation-free tire in the embodiment of the application is as follows: when the tire is used, the tire root 13 and the tire body supporting part 11 provide supporting force, and the tire crown buffering part 12 provides buffering force, so that the tire does not need to be inflated when in use, the tire is not easy to be shrunken and burst when in use, and the use is more convenient; the composite rubber tube is directly extruded by the composite extruder, the composite rubber tube with a fixed length is cut according to the diameter size of the tire, two ends of the composite rubber tube with the fixed length are butted together to form an annular tire blank, the annular tire blank is placed into a tire mold to be vulcanized, the mold is opened after vulcanization to take out a tire finished product, and the production efficiency of the inflation-free tire is improved.

Example 2:

referring to fig. 4, the difference from embodiment 1 is that the radial cross section of the support ring 15 is waved.

Example 3:

referring to fig. 5, the difference from embodiment 1 is that two support rings 15 are provided obliquely inward from the bead root 13 to the crown cushion portion 12.

Example 4:

referring to fig. 6, the difference from embodiment 3 is that the radial section of the support ring 15 is waved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A non-pneumatic tire characterized by: the tire comprises two tire body supporting parts (11), a tire crown buffering part (12) and a tire root (13), wherein the tire root (13), the tire body supporting parts (11), the tire crown buffering part (12) and the tire body supporting parts (11) are sequentially connected to form a closed cavity (14);

still include at least one support ring (15) of locating in airtight cavity (14), the inside wall of support ring (15) sets up with the lateral wall of child root (13) is integrative, the lateral wall of support ring (15) sets up with the inside wall of crown buffer (12) is integrative, with the bisector partition of child root (13) that child root (13) axis is perpendicular is at least one support ring (15).

2. A non-pneumatic tire as in claim 1, wherein: the number of the support rings (15) is two.

3. A non-pneumatic tire as in claim 2, wherein: the openings of the two support rings (15) close to the tire root (13) are smaller than the openings of the two support rings (15) far away from the tire root (13).

4. A non-pneumatic tire as in claim 2, wherein: the openings of the two support rings (15) on the side close to the tire root (13) are larger than the openings of the two support rings (15) on the side far away from the tire root (13).

5. An airless tire as set forth in any one of claims 1 to 4, wherein: the radial section of the support ring (15) is arranged in a wave shape.

6. An airless tire as set forth in any one of claims 1 to 4, wherein: the radial cross section of the support ring (15) is arranged linearly.

7. A non-pneumatic tire as in claim 1, wherein: the number of the support rings (15) is one, and the radial cross section of each support ring (15) is linearly arranged.