CN115157929B

CN115157929B - Non-pneumatic tire with automatically recovered multistage cross skeleton structure

Info

Publication number: CN115157929B
Application number: CN202210939448.4A
Authority: CN
Inventors: 王琮文; 郇勇; 肖驰; 代玉静; 李钰
Original assignee: Institute of Mechanics of CAS
Current assignee: Institute of Mechanics of CAS
Priority date: 2022-08-05
Filing date: 2022-08-05
Publication date: 2023-09-19
Anticipated expiration: 2042-08-05
Also published as: CN115157929A

Abstract

The invention relates to the technical field of tires, and discloses a non-pneumatic tire with an automatic recovery multi-stage cross framework structure, which comprises a tread and a tire bead, wherein the front surface of the tire bead is fixedly connected with a driving shaft, the outer wall of the driving shaft is sleeved with a sinking compensator, and the outer wall of one side of the driving shaft is fixedly connected with equal-width bayonets. This non-pneumatic tire with automatic multistage cross skeleton texture that restores through setting up arch and restore area and flexible supporting belt, the arch that has special structure restores the area, utilize its structural feature can roll the interval at the tire, for the position that does not receive the rolling provides extra support tension ingeniously, help tire quick recovery radial compression deformation, prevent that the tire from appearing radius when high-speed rotation is less and less, tread deformation uneven scheduling problem, flexible supporting belt with bionic structure, it has the structure of plant blade, including arc outside profile and the inside support bar of leaf vein form, make this region like plant blade, have stronger deformability resilience when having certain flexibility, the hardness is soft and economical.

Description

Non-pneumatic tire with automatically recovered multistage cross skeleton structure

Technical Field

The invention relates to the technical field of tires, in particular to a non-pneumatic tire with an automatic recovery multi-stage crossed framework structure.

Background

Compared with a pneumatic tire, the non-pneumatic tire is safe and convenient to use, so that the non-pneumatic tire is a focus of research and development of technologies of a plurality of well-known tire manufacturers, the principle is mainly that filling gas is replaced by an inner space structure or a solid elastic material, so that the support effect of a carrier is realized, however, as the filling material of the non-pneumatic tire is a high polymer material such as rubber, the inherent viscoelasticity of the non-pneumatic tire leads to the general poor resilience of the outer diameter of the non-pneumatic tire in rolling circulation, the outer diameter of the non-pneumatic tire is obviously reduced after multiple rolling circulation, the non-pneumatic tire is difficult to recover in a short time, the material becomes more and more 'stiff', the elasticity is poor, and the buffering performance is reduced.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a non-pneumatic tire with an automatic recovery multi-stage crossed framework structure, which has the advantages that an arch recovery belt helps the tire to recover radial compression deformation quickly, and a flexible supporting belt has stronger deformation recovery capability, and solves the problems in the background art.

The invention provides the following technical scheme: the utility model provides a non-pneumatic tire with automatic multistage cross skeleton texture that restores, includes tread and tire bead, the positive fixedly connected with drive shaft of tire bead, the outer wall of drive shaft has cup jointed the subsidence compensator, the outer wall fixedly connected with equal width bayonet socket of drive shaft one side, the one end rotation of subsidence compensator is connected with equal width curve structure, the other end fixedly connected with connecting bearing of subsidence compensator, the positive of subsidence compensator is equipped with the Lai's triangle geometric center, the inner wall fixedly connected with arch of tread restores the area, the inner wall fixedly connected with flexible supporting band of arch restores the area.

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

1. this non-pneumatic tire with automatic multistage cross skeleton texture that restores through setting up arch and restore area and flexible supporting belt, the arch that has special structure restores the area, utilize its structural feature can roll the interval at the tire, for the position that does not receive the rolling provides extra support tension ingeniously, help tire quick recovery radial compression deformation, prevent that the tire from appearing radius when high-speed rotation is less and less, tread deformation uneven scheduling problem, flexible supporting belt with bionic structure, it has the structure of plant blade, including arc outside profile and the inside support bar of leaf vein form, make this region like plant blade, have stronger deformability resilience when having certain flexibility, the hardness is soft and economical.

2. The non-pneumatic tire with the automatic recovery multi-stage crossed framework structure is provided with a sinking compensator, wherein the sinking compensator is connected with a tire bead, and the other end of the non-pneumatic tire is of a structure with an equal-width curve section; the center of the sinking compensator is provided with a through hole for the driving shaft to pass through, so that the characteristic of stability in rolling of an equal-width curve is skillfully utilized, the carrier jolt caused by rapid change of the sinking amount when the tire encounters an uneven road surface can be reduced, and the stability of the carrier in running is improved.

Drawings

FIG. 1 is a schematic illustration of a non-pneumatic tire having an automatically-healing multi-stage cross-carcass structure in accordance with the present invention;

FIG. 2 is a schematic diagram of the working principle of a non-pneumatic tire with an automatically recovered multi-stage cross-carcass structure according to the present invention;

FIG. 3 is a schematic view of a vertical section of a heave compensator according to the invention;

fig. 4 is a schematic diagram of the working principle of a lyocell triangle part in a heave compensator according to the present invention.

In the figure: 1. a tread; 2. a bead; 3. an arched restoring belt; 4. a flexible support belt; 5. a dip compensator; 51. an equal width curve structure; 52. connecting a bearing; 53. the geometric center of the Lai Luo triangle; 6. a drive shaft; 7. a bayonet with equal width.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-4, a non-pneumatic tire with an automatic recovery multi-stage cross-frame structure comprises a tread 1 and a tire bead 2, wherein the tread 1 is of an endless belt-shaped rubber structure, the outer surface is provided with a tread 1 pattern, the tire bead 2 is of a rigid structure, is positioned at the center of the tire and is connected with a driving shaft of a carrier, the front surface of the tire bead 2 is fixedly connected with the driving shaft 6, the outer wall of the driving shaft 6 is sleeved with a sinking compensator 5, one end of the sinking compensator 5 is provided with a ball bearing, is connected with the tire bead 2, the other end of the sinking compensator 5 is of a structure with an equal width curve section, the center of the sinking compensator 5 is provided with a through hole for the driving shaft 6 to pass through, the outer wall at one side of the driving shaft 6 is fixedly connected with an equal width bayonet 7, and the equal width bayonet 7 is fixed at the axle of the carrier, the limiting function is performed on the equal-width curve structure 51, a through hole is formed in the centers of the equal-width bayonet 7 and the sinking compensator 5, a certain gap is reserved between the hole and the driving rod 6, the diameter of the hole on the left side of the equal-width bayonet 7 in the figure is larger, a reserved space is reserved for shaking generated in the driving rod 6 in the running process of a carrier, one end of the sinking compensator 5 is rotationally connected with the equal-width curve structure 51, the equal-width curve structure 51 is positioned at one end of the sinking compensator 5 and is positioned in the equal-width bayonet 7, the equal-width curve structure 51 can rotate around a longitudinal axis, the cross section of the equal-width curve structure 51 is a Lailo triangle, and the triangle is characterized in that: it is placed between two parallel lines so as to be tangential to them, and whenever it is still within them, it is always tangential to them, no matter how the graph moves. By utilizing the characteristics, the inner side profile of the equal-width bayonet 7 is a round corner regular quadrangle, the equal-width curve structure 51 can be just put in the equal-width bayonet, each side can be tangent to the inner wall of the equal-width bayonet 7, the other end of the sinking compensator 5 is fixedly connected with a connecting bearing 52, the connecting bearing 52 is positioned at the other end of the sinking compensator 5 and is connected with the tire bead 2 in a ball bearing way, the front surface of the sinking compensator 5 is provided with a Lai triangle geometric center 53, the inner wall of the tire tread 1 is fixedly connected with an arch restoration belt 3, the arch restoration belt 3 is positioned between the tire tread 1 and the tire bead 2 and is close to the side of the tire tread 1, the arch frameworks are formed by a plurality of arch frameworks, the arch frameworks are uniformly distributed in a ring shape along the inner side of the tire tread 1, a certain stagger exists among the frameworks, the inner wall fixedly connected with flexible supporting belt 4 of arch recovery area 3, flexible supporting belt 4 is located between tread 1 and the tire bead 2, be close to the tire bead 2 side, the structural rigidity of flexible supporting belt 4 is slightly greater than arch recovery area, be used for under the prerequisite that keeps certain structural form, evenly transmit the carrier weight to arch recovery area from tire bead 2, reduce the stress concentration level of skeleton intersection department, flexible supporting belt 4 has a plurality of basic constitution units that do not intersect each other, be annular evenly distributed around tire bead 2, its shape adopts bionical blade form structure, the stable characteristic of plant blade shape has been imitated, by the outer profile of arch and the inside support of leaf vein form are constituteed, wherein the outer profile of arch can balance the external force that receives well, the inside support of leaf vein form can provide good support for the structure.

As shown in fig. 2, 3 arch frameworks a, B and C of the arch-shaped restoring band 3 and the arc segments of the tread 1 connected with the same are extracted, wherein the arch framework B is positioned at the middle position, and the load from the tire bead 2 acts on the arch top of the framework B during the running process of the tire; the skeletons a, C are symmetrically distributed on both sides of the skeleton B, and if the tire rolls, the arrow directed right downward in the drawing indicates the pressure from the bead 2, the arrow directed right upward indicates the pressure from the ground, and the skeleton B is flattened due to the compression in the vertical direction, so that it is stretched in the horizontal direction, that is, the two "feet" of the skeleton B will generate an outward thrust to the tread 1, so that this part is stretched outward to achieve the effect of shape recovery, and at the same time, the pressure in the vertical direction will compress the skeletons a and C on both sides, the "feet" at the far ends of these two skeletons will also be stretched outward to further stretch the tread 1, so that during the rolling of the tire, the arch skeleton constituting the shape recovery belt 3 will circulate the above-mentioned process, and is not limited by the rolling direction.

As shown in fig. 4, the shape of the equal width curve structure 51 is a leo triangle, the equal width bayonet 7 is a geometric shape matching with the equal width curve structure 51, the inner wall of the equal width bayonet 7 is designed into a round square shape, the leo triangle geometric center 53, when the equal width curve structure 51 rotates in the equal width bayonet 7, the leo triangle geometric center 53 will follow the figure4, the circular track drawn by the broken line moves, the outer surface of the equal-width curve structure 51 and the inner surface of the equal-width bayonet 7 are both free of enough lubricating oil, and meanwhile, in order to reduce stress concentration at the sharp angle of the equal-width curve structure 51 and improve service life, the sharp angle can be ground into a round angle, the maximum sinking amount of the non-pneumatic tire with the automatic recovery multi-stage crossed framework structure is set as D, the diameter of the circular broken line track in fig. 4 needs to be equal to the maximum sinking amount D, and the side length D of the Lai triangle and the maximum sinking amount D of the tire are related by the following relation:

at this time, the requirement of the sinking compensator 5 can be met, the carrier provided with the non-pneumatic tire with the automatic recovery multi-stage crossed framework structure encounters a rugged road surface in the running process, the tire rapidly and radially sinks, then the sinking compensator 5 is driven to be downward together due to the connection effect of the connecting bearing 52 in fig. 3, under the effect, the equal-width curve structure 51 rotates in the equal-width bayonet 7, at the moment, the Lai triangle geometric center 53 of the Lai triangle moves downwards for a certain distance along the dotted line track shown in fig. 4, but the process has no influence on the equal-width bayonet 7 due to the geometric characteristic of the Lai triangle, and the carrier still keeps stable, so that the shock feeling of the carrier can be reduced, and the comfort is improved.

When the tire is used, firstly, the structural rigidity of the flexible supporting belt 4 is slightly larger than that of the arched restoring belt in the moving process, so that the weight of the carrier is uniformly transferred to the arched restoring belt from the tire bead 2 on the premise of keeping a certain structural form, the stress concentration level at the crossing part of the framework is reduced, the external force born by the arched external profile can be well balanced, the internal support of the vein can provide good support for the structure, the arched restoring belt 3 is provided with 3 arched frameworks A, B and C, the arched frameworks B are positioned at the middle positions, the load from the tire bead 2 acts on the arched top of the frameworks B in the running process of the tire, the frameworks A and C are symmetrically distributed on the two sides of the frameworks B, and the frameworks B can be flattened due to compression in the vertical direction, so that the frameworks B are stretched in the horizontal direction, namely, the two feet of the frameworks B can generate outward thrust on the tire tread 1, and the parts are outwards spread, and the shape restoring effect is achieved. Meanwhile, the vertical pressure can compress the frameworks A and C at the two sides, the feet at the far ends of the two frameworks can extend outwards, the tread 1 is further stretched, and the arch frameworks forming the shape restoring belt 3 can circulate in the process of rolling the tire and are not limited by the rolling direction.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The non-pneumatic tire with the automatic restoration multi-stage crossed framework structure is characterized by comprising a tire tread (1) and tire beads (2), wherein the front surface of each tire bead (2) is fixedly connected with a driving shaft (6), the outer wall of each driving shaft (6) is sleeved with a sinking compensator (5), the outer wall of one side of each driving shaft (6) is fixedly connected with an equal-width bayonet (7), one end of each sinking compensator (5) is rotationally connected with an equal-width curve structure (51), the other end of each sinking compensator (5) is fixedly connected with a connecting bearing (52), the front surface of each sinking compensator (5) is provided with a Lai-delta geometric center (53), the inner wall of each tire tread (1) is fixedly connected with an arched restoration belt (3), the inner wall of each arched restoration belt (3) is fixedly connected with a flexible supporting belt (4), each arched restoration belt (3) is positioned between each tire tread (1) and each tire bead (2), the side of each tire tread (1) is close to the corresponding to one side of each tire tread (1), the frameworks are distributed annularly, each framework is uniformly distributed in an arch shape, and a certain arch shape exists between the frameworks, and the inner walls (3) are fixedly connected with the tire bead (4) between the tire treads (2); the structural rigidity of the flexible supporting belt (4) is slightly larger than that of the arched restoring belt, so that the weight of the carrier is uniformly transferred from the tire bead (2) to the arched restoring belt on the premise of keeping a certain structural form, the stress concentration level at the crossing part of the framework is reduced, the flexible supporting belt (4) is provided with a plurality of basic composition units which are not crossed with each other, the flexible supporting belt is uniformly distributed in a ring shape around the tire bead (2), the shape of the flexible supporting belt adopts a bionic blade-shaped structure, the characteristic of stable shape of plant blades is simulated, and the flexible supporting belt is composed of an arched outer contour and a blade-shaped inner support; the arch skeleton (3) is respectively connected with the tops of basic constituent units of every two adjacent flexible supporting belts (4).