CN206306738U - Non-inflatable tyre - Google Patents

Abstract

The utility model proposes a kind of non-inflatable tyre, include rubber tread successively along tire radial direction ecto-entad, vulcanize integral base rubber with rubber tread, and the elastic support played a supportive role to rubber tread, elastic support includes the interior bearing ring being in contact with wheel rim, with the outer bearing ring of base portion glue laminating, and the midfoot support body between interior bearing ring and outer bearing ring；Midfoot support body includes the first supporter and the first axially extending bore that are distributed uniformly and circumferentially, wherein, the first supporter is arranged in order with the first axially extending bore from the inside bearing ring of outer bearing ring.Non-inflatable tyre of the present utility model, helps for tyre contact pressure to be uniformly discretely transferred to midfoot support body, makes ground connection footprint shape excellent, ground contact pressure distribution than more uniform, with good ground connection performance.

Description

Non-inflatable tyre

Technical field

The utility model belongs to tyre technology, more particularly to a kind of non-inflatable tyre.

Background technology

At present, the tire being currently in use, major part is all pneumatic tire, and pneumatic tire utilizes the height of inner pressure of tire contracting air The load of vehicle is pressed, with good riding comfort.But gas leakage is susceptible to when pneumatic tire is punctured, makes wheel Tire bearing capacity weakens, and can produce sharp wear or irregular wear to tire tread, when the blowing pressure is excessive in tire also Can blow out, influence vehicle driving safety.Therefore, develop a kind of with the non-solid of comfortableness, security and durability Non-inflatable tyre turns into the top priority of automobile and tyre industry.

Chinese patent CN104999862A discloses a kind of non-inflatable safety tyre, be followed successively by from inside to outside tyre surface, outer shroud, Supporter and inner ring, tyre surface bonding or vulcanize on outer shroud, and the supporter radially and is circumferentially arranged since outer shroud Between outer shroud and inner ring, circumferentially distributed multigroup vibration absorption unit and brace rod on the supporter, every group of vibration absorption unit by Two groups of shock-damping structure compositions, two groups of shock-damping structures are with radial direction for symmetry axis is axially arranged.But, vibration absorption unit is located in supporter Be not provided with circumferential ring body and outer shroud between can uniform discrete ground pressure through hole or supporting construction, when tire ground connection Ground pressure is small when position is located at damping hole site, and when tire ground connection position is located at shock relieve vent hole wall position, ground pressure is big, It is unfavorable for for ground pressure being transferred uniformly into supporter, the ground connection shape that impression is uneven and handling comfort is relatively low easily occurs Condition.

Therefore, a kind of non-inflatable tyre with good earth performance and uniform ground pressure is designed, is exempted from improving The handling safety and comfortableness of pneumatic tire, an urgent demand as tyre technology.

Utility model content

The utility model is uneven for above-mentioned existing non-inflatable tyre ground connection impression and handling comfort is relatively low Technical problem, proposes a kind of non-inflatable tyre with good earth performance and uniform ground pressure.

In order to achieve the above object, the technical solution adopted in the utility model is：

A kind of non-inflatable tyre, rubber tread is included along tire radial direction ecto-entad successively, and one is sulfided into rubber tread The base rubber of body, and the elastic support played a supportive role to rubber tread, elastic support include what is be in contact with wheel rim Interior bearing ring, the outer bearing ring with base portion glue laminating, and the midfoot support body between interior bearing ring and outer bearing ring；In Portion's supporter includes the first supporter and the first axially extending bore that are distributed uniformly and circumferentially, wherein, the first supporter and the One axially extending bore is arranged in order from the inside bearing ring of outer bearing ring.

Preferably, the axial cross section of the first supporter is shaped as arch, in arch tyre revolution is deviated to the cambered surface of string Axle；First axially extending bore include it is circumferential be alternately arranged successively four in through hole and six through hole, wherein, the axial direction of four side through holes is cut Face is the shape being in turn connected to form by two isometric line segments and two isometric circular arcs, and the axial cross section of six side through holes is by three The shape that Length discrepancy line segment and three Length discrepancy circular arcs are in turn connected to form.

Preferably, midfoot support body further includes the second supporter being distributed uniformly and circumferentially and the 3rd support Body, the second supporter is arranged in order with the 3rd supporter from the inside bearing ring of the first axially extending bore.

Preferably, the second supporter is one layer to three layers, the axial cross section of the second supporter is shaped as circular or side number Polygon more than or equal to 8, from the first axially extending bore to the direction of the 3rd supporter, axial cross section is circular to the second supporter Diameter is sequentially reduced, and/or axial cross section is that the polygonal length of side of the side number more than or equal to 8 is sequentially reduced.

Preferably, the axial cross section of the 3rd supporter is the isosceles trapezoid that two articles of waists have chamfering for camber line and lower base angle, Wherein the bottom of isosceles trapezoid is adjacent with interior bearing ring；Is circumferentially evenly arranged between second supporter of adjacent two layers Two axially extending bores, for three isometric line segments and three isometric circular arcs, alternately connection is constituted the axial cross section of the second axially extending bore successively Shape.

Preferably, the axial cross section of the 3rd supporter is arch, in arch to the cambered surface of string towards tire rotating shaft；Phase Between second supporter of adjacent two-layer, the second axially extending bore is provided between the second supporter and the 3rd supporter, second axially The axial cross section of through hole is circumferential equally distributed three isometric line segments and three isometric circular arc shapes that alternately connection is constituted successively Shape.

Preferably, it is 30-45 that second supporter adjacent with the first axially extending bore is circumferentially arranged；Second supporter It is staggered in radial directions between the 3rd supporter and between the second supporter of adjacent two layers.

Preferably, the first supporter, the first axially extending bore, the second supporter and the 3rd supporter axial direction include Axially centered isometrical section, the first reducer on the left of isometrical section of axial direction, and on the right side of isometrical section of axial direction Two reducers, isometrical section of circumferential center line overlaps with tire circumference center line, and the area of isometrical section of axial cross section is in axial direction Equal on direction, the area of the axial cross section of the first reducer increases successively from isometrical section to tire axial left surface, and second becomes The area of the axial cross section of footpath section increases successively from isometrical section to tire axial right flank.

Preferably, the first reducer sideline vertically and tire rotating shaft are into 1 ° of angle, the second reducer is vertically Sideline and tire rotating shaft into 1 ° of angle.

Preferably, outer bearing ring outside is provided with the first draw-in groove, the axial cross section of the first draw-in groove is shaped as down " convex " word Shape or indent " ten " font, wherein, the short side of inverted "convex" shape is towards tire rotating shaft；Set at base rubber and outer pressure-bearing ring combined face It is equipped with second draw-in groove corresponding with the first draw-in groove, the axial cross section of the second draw-in groove is positive "convex" shaped or evagination " ten " font, Wherein, the short side of positive "convex" shaped is towards tire rotating shaft；First draw-in groove and the second draw-in groove are along tire circumference equidistantly distributed.

Compared with prior art, advantage of the present utility model and good effect are：

1st, non-inflatable tyre of the present utility model, it is by the midfoot support body circumferential ring body adjacent with outer bearing ring First supporter and the first axially extending bore are set, help for tyre contact pressure to be uniformly discretely transferred to midfoot support body, Make ground connection footprint shape excellent, ground contact pressure distribution than more uniform, with good ground connection performance.

2nd, non-inflatable tyre of the present utility model, the second supporter set in its middle part supporter is multilayer, and axially The round diameter or polygonal side length in section are sequentially reduced from the first axially extending bore to the direction of the 3rd supporter, make second Deformation quantity of the support body in load bearing process is sequentially reduced by the first axially extending bore to the 3rd supporter direction, is not only facilitated in making Portion's supporter has good bearing capacity, can more improve the recoverable force ability and buffer capacity of midfoot support body.

3rd, non-inflatable tyre of the present utility model, outer bearing ring is that mechanical draw-in groove is connected with base rubber, makes tyre surface and base portion Glue is mounted on midfoot support body, enhances the ability of fitting of base rubber and midfoot support body, prevents tire from being travelled in high speed When midfoot support body and base rubber produce delamination, further improve the handling safety performance of tire.

4th, non-inflatable tyre of the present utility model, the first axially extending bore set in midfoot support body and second axially leads to Hole, makes tire produce rough air in the process of moving, is conducive at outer bearing ring ground connection and midfoot support body is because of deformation The heat Quick diffusing of generation is gone out, it is to avoid the temperature of tire is too high, and then improves the service life of tire.

Brief description of the drawings

Fig. 1 is the axial, cross-sectional view of the utility model non-inflatable tyre；

Fig. 2 is the partial perspective view of the utility model non-inflatable tyre；

Fig. 3 is the first embodiment local axial cross section of the 3rd supporter of the utility model non-inflatable tyre；

Fig. 4 is the second embodiment local axial cross section of the 3rd supporter of the utility model non-inflatable tyre；

Fig. 5 is the partial circumferential sectional drawing of the utility model non-inflatable tyre；

Fig. 6 is partial enlarged drawing at A in Fig. 5；

Fig. 7 is the first draw-in groove of the present utility model and the second draw-in groove first embodiment stereogram；

Fig. 8 is the first draw-in groove of the present utility model and the second draw-in groove second embodiment stereogram

Fig. 9 is the top surface designed arc-shaped appearance schematic diagram of the base rubber circumference section of the utility model non-inflatable tyre.

Above in each figure：1st, rubber tread；11st, tire shoulder inclined-plane；2nd, base rubber；21st, the second draw-in groove；3rd, elastic support； 4th, outer bearing ring；41st, the first draw-in groove；5th, midfoot support body；51st, the first supporter；52nd, the second supporter；53rd, the 3rd support Body；54th, the first axially extending bore；541st, four side through hole；542nd, six side through hole；55th, the second axially extending bore；6th, interior bearing ring；7th, etc. Footpath section；8th, the first reducer；9th, the second reducer.

Specific embodiment

Below, the utility model is specifically described by exemplary implementation method.It should be appreciated, however, that not having In the case of being further discussed below, element, body and feature in an implementation method can also be advantageously incorporated into other embodiment party In formula.

, it is necessary to explanation, the rotating shaft of tire is axial direction in accompanying drawing 1, and circumferencial direction is in description of the present utility model It is circumferential, along the direction of radius for radially；And along radius increase direction be it is outside, along radius reduction direction be inside；Axially Section is that, perpendicular to the section of tire rotating shaft, circumferential section was tire rotating shaft and perpendicular to the section of circumferencial direction, axially The top of section is the radial outer end face of axial section.Term " interior ", " outward ", " on ", D score, the side of the instruction such as "front", "rear" Position or position relationship are, based on the position relationship shown in accompanying drawing 1, to be for only for ease of description the utility model and simplify description, and Be not indicate or imply meaning device or element must have specific orientation, with specific azimuth configuration and operation, therefore It is not intended that to limitation of the present utility model.Additionally, term " first ", " second ", " the 3rd " are only used for describing purpose, without It is understood that to indicate or implying relative importance.

It is as shown in Figure 1-Figure 3 a kind of claimed non-inflatable tyre of the utility model, along tire radial direction ecto-entad Include rubber tread 1 successively, integral base rubber 2 is vulcanized with rubber tread 1, and rubber tread 1 is played a supportive role Elastic support 3, elastic support 3 includes the interior bearing ring 6 that is in contact with wheel rim, the outer bearing ring 4 fitted with base rubber 2, And the midfoot support body 5 between interior bearing ring 6 and outer bearing ring 4；Midfoot support body 5 includes along the circumferential direction uniform point First supporter 51 and the first axially extending bore 54 of cloth, wherein, the first supporter 51 and the first axially extending bore 54 are from outer bearing ring 4 Inside bearing ring 6 is arranged in order.

Non-inflatable tyre of the present utility model, is set by the midfoot support body circumferential ring body adjacent with outer bearing ring First supporter and the first axially extending bore, help for tyre contact pressure to be uniformly discretely transferred to midfoot support body, make to connect Ground footprint shape is excellent, and ground contact pressure distribution, with good ground connection performance, had both possessed the carrying of radial than more uniform Ability, can meet the requirement in terms of handling safety and comfortableness again.

Further, the axial cross section of the first supporter 51 is shaped as arch, in arch tire is deviated to the cambered surface of string Rotating shaft；Arch includes bad arch, semicircle and major segment.First axially extending bore 54 includes that circumferential four sides being alternately arranged successively lead to The side through hole 3242 of hole 541 and six, so that by tyre contact pressure by being transferred uniformly into midfoot support body 5 after two layer scatterings, Avoid tire ground pressure when the lead to the hole site of midfoot support body 5 is grounded small, when at the through-hole wall position of midfoot support body 5 Ground pressure is big, and footprint shape is excellent to be grounded tire, and ground contact pressure distribution, with good ground connection performance, enters than more uniform And there is good control stability and comfortableness；The first axially extending bore 54 can form air during tire running simultaneously Flowing, is conducive at the ground connection of outer bearing ring 4 and the deformation heat Quick diffusing of midfoot support body 5 is gone out.

Specifically, the axial cross section of four side through holes 541 is to be sequentially connected shape by two isometric line segments and two isometric circular arcs Into shape, the axial cross section of six side through holes 3242 is to be in turn connected to form by three Length discrepancy line segments and three Length discrepancy circular arcs Shape, four while through hole 541 area be less than six while through hole 3242 so that the earth contact pressure passed over from the first supporter 51 Power is transferred to the through hole inside midfoot support body 5 by different debunching actions, improves the difference to ground pressure debunching action Alienation and flexibility.

With continued reference to Fig. 1-Fig. 3, as shown in Figure 1-Figure 3, midfoot support body 5 further includes to be distributed uniformly and circumferentially The second supporter 52 and the 3rd supporter 53, the second supporter 52 inwardly holds with the 3rd supporter 53 from the first axially extending bore 54 Pressure ring 6 is arranged in order.The bearing capacity that the multilayer annular support body of midfoot support body 5 makes tire and has common pneumatic tire is eased up Rush characteristic energy.

Specifically, the second supporter 52 is one layer to three layers, and the axial cross section of the second supporter 52 is shaped as circular or side Polygon of the number more than or equal to 8, polygon of the circular or side number more than or equal to 8 forms through hole in axial direction, to improve middle part The shock-absorbing capacity and deformability of supporter 5.In order that the deformation of midfoot support body 5 is concentrated mainly on and the first axially extending bore 54 In the second adjacent supporter 52, the second supporter 52 axially cuts from the direction of the supporter 53 of the first axially extending bore 54 to the 3rd Face is that circular diameter is sequentially reduced, and/or axial cross section is that the polygonal length of side of the side number more than or equal to 8 is sequentially reduced, and is made Deformation quantity of second supporter 52 in load bearing process is sequentially reduced by the first axially extending bore 54 to the direction of the 3rd supporter 53, is entered And ensure tire being capable of quick-recovery soon after bearing strain.

Referring to Fig. 3, Fig. 3 is the first embodiment partial axial section of the 3rd supporter of the utility model non-inflatable tyre Figure.Shown in Fig. 3, the axial cross section of the 3rd supporter 53 is the isosceles trapezoid that two articles of waists have chamfering for camber line and lower base angle, wherein The bottom of isosceles trapezoid is adjacent with interior bearing ring 31.The via design of the 3rd supporter 53 further enhancing midfoot support body 5 elastic buffer ability and heat-sinking capability.

Further, the second axially extending bore 55, the second axially extending bore are provided between the second supporter 52 of adjacent two layers 55 axial cross section is circumferential equally distributed three isometric line segments and three isometric circular arc shapes that alternately connection is constituted successively. Second axially extending bore 55 can be by the second supporter 52 in the process of moving because the heat Quick diffusing that deformation is produced is gone out, it is to avoid The temperature of tire is too high, and then improves the service life of tire.

Referring to Fig. 4, Fig. 4 axially cuts for the first embodiment of the 3rd supporter of the utility model non-inflatable tyre is local Face figure.As shown in figure 4, tire specification is 155/65R13 in the present embodiment, and when the axial section of tire is higher than 96mm, tire Maximum section of passenger flow tire is become, in order to increase the intensity at the interior supporter of bearing ring 6 to the second 52, midfoot support body 5 is transmitted and is carried Lotus is more uniform, and the axial cross section of the 3rd supporter is arch, and the string institute of arch is to cambered surface towards tire rotating shaft.Meanwhile, second The second axially extending bore 55, the axial cross section of the second axially extending bore 55 are further provided between the supporter 53 of supporter 52 and the 3rd It is circumferential equally distributed three isometric line segments and three isometric circular arc shapes that alternately connection is constituted successively.Second axially extending bore 55 can mitigate the overall weight of maximum section of passenger flow tire, and be conducive to the deformation of midfoot support body 5 to radiate.

In order to the quality for being further ensured that tire is slim and graceful and the characteristic of uniform load, adjacent with the first axially extending bore 54 the It is 30-45 that the circle or polygon of two supporters 52 are circumferentially arranged；Meanwhile, in order that load hair in midfoot support body 5 Property transmission is dissipated, radially between the second supporter 52 and the 3rd supporter 53 and between the second supporter 52 of adjacent two layers Direction alternate, further improves the deformation buffer performance of midfoot support body 5, it is ensured that tire has excellent operation stabilization Property and comfortableness.

Referring to Fig. 5, Fig. 5 is the partial circumferential sectional drawing of the utility model non-inflatable tyre.As shown in figure 5, in Fig. 5 laterally Direction is tire rotor shaft direction, and vertical direction is tire circumferential direction.When tire lands, in order to improve along tire rotor shaft direction Between position part bearing capacity, the first supporter 51, the first axially extending bore 54, the second supporter 52 and the 3rd supporter 53 are The through hole of insertion in the axial direction, and include axially centered isometrical section 7 in axial direction, positioned at isometrical section 7 The first reducer 8 on the left of axial direction, and the second reducer 9 on the right side of isometrical section of 7 axial directions, isometrical section 7 of circumferential center line Overlapped with tire circumference center line, the area of isometrical section 7 of axial cross section is equal in the axial direction, the axle of the first reducer 8 Increase successively from isometrical section of 7 to tire axial left surface to the area in section, the area of the axial cross section of the second reducer 9 from etc. Footpath section 7 to tire axial right flank increases successively；Wherein, half of isometrical section of the axial length less than tire axial width.Deng The area of the axial cross section of footpath section 7 is less than the first reducer 8 and the second reducer 9, can not only strengthen tire positioned at rotating shaft side To the bearing capacity in centre position, and the ventilation area of tire axial left and right side can be increased, further be conducive to wheel Heat when tire deforms is distributed, and improves the control stability and service life of tire.

Specifically, the first reducer 8 sideline vertically and tire rotating shaft be into 1 ° of angle, and the second reducer 9 is vertically Sideline and tire rotating shaft into 1 ° of angle.Referring to Fig. 6, Fig. 6 is partial enlarged drawing at A in Fig. 5.It is the first supporter 51 in Fig. 6 The gradual change trend that second reducer 9 is in axial direction gone up, the first reducer 9 sideline vertically is shaped as α folders with tire rotating shaft Angle, in the present embodiment, α angles are 1 °.

Referring to Fig. 7, Fig. 7 is the first draw-in groove of the present utility model and the second draw-in groove first embodiment stereogram.Such as Fig. 7 institutes Show, the lateral surface of outer bearing ring 4 of non-inflatable tyre of the present utility model is provided with the first draw-in groove 41, and the axial direction of the first draw-in groove 41 is cut Face is shaped as pointing to the inverted "convex" shape of tire rotor shaft direction, and the short side of inverted "convex" shape is towards tire rotating shaft；Base rubber 2 with it is outer Be provided with the faying face of bearing ring 4 with corresponding second draw-in groove 21 of the first draw-in groove 41, the axial cross section of the second draw-in groove 21 is to point to The positive "convex" shaped of tire rotor shaft direction, the short side of positive "convex" shaped is towards tire rotating shaft；First draw-in groove 41 and the second draw-in groove 21 Axial length less than or equal to tire axial width, and along tire circumference equidistantly distributed.

Referring to Fig. 8, Fig. 8 is the first draw-in groove of the present utility model and the second draw-in groove second embodiment stereogram.Such as Fig. 8 institutes Show, the lateral surface of outer bearing ring 4 of non-inflatable tyre of the present utility model is provided with the first draw-in groove 41, and the axial direction of the first draw-in groove 41 is cut Face is shaped as pointing to indent " ten " font of tire rotor shaft direction；It is provided with and first at base rubber 2 and the faying face of outer bearing ring 4 Corresponding second draw-in groove 21 of draw-in groove 41, the axial cross section of the second draw-in groove 21 is evagination " ten " font for pointing to tire rotor shaft direction； The axial length of the first draw-in groove 41 and the second draw-in groove 21 is less than or equal to the axial width of tire, and equidistantly divides along tire is circumferential Cloth.

Non-inflatable tyre of the present utility model is combined rubber tread 1 by the first draw-in groove 41 and the tight of the second draw-in groove 21 It is mounted on elastic support 3 with base rubber 2, enhances the ability of fitting of base rubber 2 and supporter 3, this practicality can be made new The non-inflatable tyre of type is when fair speed (60km/h-85km/h) is travelled, it is to avoid slipping now occurs with base rubber 2 in supporter 3 As being further ensured that the safety of tire.

It should be noted that the first draw-in groove 41 and the second draw-in groove 21 used in the utility model be not limited to it is above-mentioned Cited inverted "convex" shape or indent " ten " font body, can also be other suitable cards well-known to those skilled in the art Groove.

Referring to Fig. 9, Fig. 9 is the circumferential top surface designed arc-shaped appearance schematic diagram of the base rubber 2 of the utility model non-inflatable tyre.As schemed Shown in 9, the circumferential top arc of base rubber 2 can be strengthened tire and integrally be connect using two sections of low tangent arc designs of middle part two ends high Ground performance, and increase the bond area of base rubber 2 and rubber tread 1.The two sections of circular arcs in the circumferential top of base rubber 2 are tangent, i.e. arc AB Tangent with arc BCD, arc BCD is tangent with arc DE, and arc AB is equal with the radius of arc DE, and the radius R1 of arc BCD is more than arc AB and arc DE Radius R2, arcuate midway point C points compared with ends A point and E points 1~3mm high, crown arc arc length be about tread length 60%~ 70%.

The axial top surface circular arc of rubber tread 1 is using the low two sections of tangent arcs design in middle part two ends high, and tread Highly it is 2~5mm, ground connection impression is presented oval or square when tire is grounded, contributes to reduction rubber tread to wear and tear.

With continued reference to Fig. 2, Fig. 2 is the partial perspective view of the utility model non-inflatable tyre.As shown in Figure 2, supporter 3 with The intermediate location of rubber tread 1 is formed with tire shoulder inclined-plane 11, and tire shoulder inclined-plane 11 is formed with axial direction with the horizontal plane where tire rotating shaft Inclination angle.If axial inclination is too small, it is unfavorable for that the power at the edge of midfoot support body 3, to the transmission of the middle part of rubber tread 1, easily causes rubber The impression of tyre surface 1 is being axially formed spindle shape；If axial inclination is excessive, the ground contact load of tire shoulder inclined-plane 11 is excessive, easily causes Tire shoulder deformity abrasion.In the present embodiment, the axial inclination on tire shoulder inclined-plane 11 is set to 45 °~75 °, the load of the transmission of supporter 3 Lotus to the middle part of rubber tread 1 is concentrated on during rubber tread 1, so as to improve ground connection performance.

The elastic support 3 of non-inflatable tyre of the present utility model is using having high intensity, high resiliency, resistance to flexion, heat-resisting The thermoplastic engineering plastic polyurethane once injection moulding of the performances such as oxidation, proportion is small, recoverable, production technology letter It is single, and possess the static state and dynamic performance requirements of pneumatic tire.The radial thickness of outer bearing ring 4 is 6-9mm, interior pressure-bearing simultaneously The radial thickness of ring 6 is 4-7mm, it is ensured that tire has good holding in the application of middle low speed passenger car and new-energy automobile Loading capability and handling safety, comfortableness.

Claims (10)

1. a kind of non-inflatable tyre, rubber tread (1) is included along tire radial direction ecto-entad successively, is vulcanized with rubber tread (1) Integral base rubber (2), and the elastic support (3) played a supportive role to rubber tread (1), it is characterised in that：Elasticity Supporter (3) includes the interior bearing ring (6) that is in contact with wheel rim, the outer bearing ring (4) fitted with base rubber (2), and is located at Midfoot support body (5) between interior bearing ring (6) and outer bearing ring (4)；Midfoot support body (5) includes along the circumferential direction uniform point First supporter (51) and the first axially extending bore (54) of cloth, wherein, the first supporter (51) is with the first axially extending bore (54) certainly Inwardly bearing ring (6) is arranged in order outer bearing ring (4).

2. non-inflatable tyre according to claim 1, it is characterised in that：The axial cross section of the first supporter (51) is shaped as Arch, in arch tire rotating shaft is deviated to the cambered surface of string；First axially extending bore (54) including it is circumferential be alternately arranged successively four The through hole (542) in through hole (541) and six, wherein, the axial cross section of four side through holes (541) is by two isometric line segments and two The shape that isometric circular arc is in turn connected to form, the axial cross section of six side through holes (542) be by three Length discrepancy line segments and three not The shape that isometric circular arc is in turn connected to form.

3. non-inflatable tyre according to claim 1, it is characterised in that：Midfoot support body (5) is further included circumferentially Equally distributed second supporter (52) in direction and the 3rd supporter (53), the second supporter (52) is with the 3rd supporter (53) certainly Inwardly bearing ring (6) is arranged in order first axially extending bore (54).

4. non-inflatable tyre according to claim 3, it is characterised in that：Second supporter (52) is one layer to three layers, the The axial cross section of two supporters (52) is shaped as polygon of the circular or side number more than or equal to 8, and the second supporter (52) is from first To the direction of the 3rd supporter (53), axial cross section is that circular diameter is sequentially reduced to axially extending bore (54), and/or axial cross section The polygonal length of side for side number more than or equal to 8 is sequentially reduced.

5. non-inflatable tyre according to claim 4, it is characterised in that：The axial cross section of the 3rd supporter (53) is two articles Waist is the isosceles trapezoid that there is chamfering at camber line and lower base angle, and the wherein bottom of isosceles trapezoid is adjacent with interior bearing ring (31)；It is adjacent The second axially extending bore (55), the axle of the second axially extending bore (55) are circumferentially evenly arranged between second supporter (52) of two-layer It is three isometric line segments and three isometric circular arc shapes that alternately connection is constituted successively to section.

6. non-inflatable tyre according to claim 4, it is characterised in that：The axial cross section of the 3rd supporter (53) is bow Shape, in arch to the cambered surface of string towards tire rotating shaft；Between second supporter (52) of adjacent two layers, the second supporter (52) The second axially extending bore (55) is provided between the 3rd supporter (53), the axial cross section of the second axially extending bore (55) is circumferential equal Three isometric line segments of even distribution and three isometric circular arc shapes that alternately connection is constituted successively.

7. the non-inflatable tyre according to claim any one of 4-6, it is characterised in that：It is adjacent with the first axially extending bore (54) The second supporter (52) it is circumferentially arranged be 30-45；Between second supporter (52) and the 3rd supporter (53), Yi Jixiang It is staggered in radial directions between second supporter (52) of adjacent two-layer.

8. non-inflatable tyre according to claim 7, it is characterised in that：First supporter (51), the first axially extending bore (54), the second supporter (52) and the 3rd supporter (53) axial direction include axially centered isometrical section (7), are located at The first reducer (8) on the left of isometrical section of (7) axial direction, and the second reducer (9) on the right side of isometrical section of (7) axial direction, it is isometrical The circumferential center line of circumferential center line and the tire of section (7) overlaps, isometrical section of area of the axial cross section of (7) phase in the axial direction Deng the area of the axial cross section of the first reducer (8) increases successively from isometrical section (7) to tire axial left surface, the second reducing The area of the axial cross section of section (9) increases successively from isometrical section (7) to tire axial right flank.

9. non-inflatable tyre according to claim 8, it is characterised in that：First reducer (8) sideline vertically and wheel Tire rotating shaft into 1 ° of angle, the second reducer (9) sideline vertically and tire rotating shaft into 1 ° of angle.

10. non-inflatable tyre according to claim 1, it is characterised in that：Outer bearing ring (4) outside is provided with the first draw-in groove (41), the axial cross section of the first draw-in groove (41) is shaped as inverted "convex" shape or indent " ten " font, wherein, inverted "convex" shape it is short While towards tire rotating shaft；Base rubber (2) is provided with second corresponding with the first draw-in groove (41) with outer bearing ring (4) faying face Draw-in groove (21), the axial cross section of the second draw-in groove (21) is positive "convex" shaped or evagination " ten " font, wherein, positive "convex" shaped it is short While towards tire rotating shaft；First draw-in groove (41) and the second draw-in groove (21) are along tire circumference equidistantly distributed.