CN2251501Y

CN2251501Y - Wheel with compound tyre having rigid liner

Info

Publication number: CN2251501Y
Application number: CN 95244019
Authority: CN
Inventors: 崔世泰
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-06-21
Filing date: 1995-05-22
Publication date: 1997-04-09
Anticipated expiration: 2005-05-22

Abstract

The utility model relates to a wheel with a compound tyre having a rigid liner. A general wheel has a rim, the utmost outer side of the wheel is an annular outer tube, and an annular inner tube is arranged between the outer tube and the rim. The utility model has the improvement that an annular rigid liner is arranged between the outer tube and the inner tube and is made of steel or plastics so as to have high anti-plane bending rigidity, and reaction force of ground acts on the inner tube through the outer tube and the rigid liner after the wheel is loaded. Since the inner tube is deformed within a wide angular range due to the anti-bending action of the rigid liner, the requirement for the rigidity of the inner tube is greatly reduced, and therefore, the utility model can realize inflation free or the low inflation pressure of the inner tube.

Description

Has the band wheel of lining composite tyre just

The utility model relates to the wheel of Transport Machinery.

Common wheel comprises wheel rim and peripheral rubber tire thereof.Because the counter-bending rigidity of rubber tire approaches zero, the deformation range that load produces tire only limits near the less neutral angle 6 of the ground reaction force zone of action (about 10 degree), thereby require tire that bigger anti-radial pressure rigidity is arranged, as the inflation pressure of 6 kg/cm.Obviously ground reaction force can be regarded concentrated force as, and tire is made the use stress concentration at concentrated force.Tire is long line segment (being contact wire) 7 with the projection of ground-surface contact surface on the symmetrical plane vertical with wheel shaft 9 (herein " plane " all refers to this plane) in addition, and wheel travels and is subjected to bigger resisting moment.

The purpose of this utility model provides improved wheel, makes the inner tube of a tyre that plays cushioning effect in the tire in bigger neutral angle scope internal strain, reduces stress concentration, thereby reduces the rigidity requirement of the inner tube of a tyre.Inflation is exempted from realization.

The purpose of this utility model is to realize like this, between the inner tube of a tyre 3 of a cover tire 5 that plays anti-bone effect and a cushioning effect, place a ring that is called firm lining 4, just lining 4 has bigger anti-plain bending rigidity, EJ is bigger, E is the tensile modulus of elasticity of material, and J is the moment of inertia of the cross-sectional plane of ring to neutral bending axis.Ground reaction force is by just lining 4 behind the stand under load, acts on (this is called the proportionality action of firm lining 4) on the inner tube of a tyre 3 with the form of distributed force, makes the deformation range of the inner tube of a tyre bigger, as neutral angle 6 greater than 40 degree.

Just serve as a contrast behind the plain bending curvature at ground reaction force point of action 8 places in addition greater than zero, made contact wire 7 shorter, reduced resistance to motion.

Concrete structure of the present utility model is provided by following examples and accompanying drawing.

Fig. 1, band is the wheel structure figure of lining just.Fig. 2, the K of Fig. 1 is to view.Fig. 3, the example of airless tire.Fig. 4, airtyred example.Fig. 5, the example of Tire ﹠ Tube one.Fig. 6, cover tire do not anchor at the example on the wheel rim.Fig. 7, pneumatic tyre cover and coincideing of just having served as a contrast.

Describe the details and the principle of work of the device that the utility model proposes in detail below in conjunction with accompanying drawing.

Fig. 1 wheel comprises following parts: the wheel rim 2 of band bearing hole 1, be the inner tube of a tyre 3 of annular, just serve as a contrast 4, cover tire 5.The inner tube of a tyre 3, just serve as a contrast 4, cover tire 5 threes or wherein the two all can be made into one arbitrarily.The three is combined earlier, be called composite tyre.Again composite tyre is arranged on the wheel rim outside.Particular location is, cover tire 5 is positioned at the wheel outermost, and the inner tube of a tyre 3 is at wheel rim 2 and just served as a contrast between 4, just served as a contrast 4 between the inner tube of a tyre 3 and cover tire 5.(see Fig. 2 partial cutaway place) on the cutaway view of being done with plane 9, the order that above-mentioned parts are arranged in order from inside to outside (this order is cross-sectional ordering) is: wheel rim 2, the inner tube of a tyre 3 has just served as a contrast 4, cover tire 5.The inner tube of a tyre 3 is rubber inner tube preferably.Just preferably steel or plastics just serve as a contrast lining 4.The structure of firm lining 4 is thin-wall preferably.The inner tube of a tyre 3 can be with or without enclosed cavity, can inflate or not inflate.The handcar wheel can not have cover tire, and this wheel also can be regarded the example that firm lining 4 and cover tire 5 are made one as.Cover tire 5 is rubbery cover tyre preferably.The cover tire that is used for hand cart tyre is soft limit preferably.

Now analyze distortion of gravity loading lower member and internal force.Fig. 2, symmetrical plane 9 serve as a contrast part inboard, the wheel rim outside just be a planar rings, and this ring radial dimension is on ring thick 12.Last ring is thick, it is thick to encircle the thick respectively ring for bearing hole more than 1, following nearly half annular down.The rest may be inferred for the connotation of the last inner tube of a tyre, following cover tire etc.Ring is thick before loading equates everywhere.Wheel rim all coincide with inner tube of a tyre medial surface 10 before and after loading, and just lining all coincide with cover tire medial surface 11.Under the gravity P effect,

Relatively just served as a contrast nadir 17 wheel rims and moved down apart from a, tire vertex 16 moves down distance b.P is wheel integral rigidity K to the rate of change of a.Make n=b/a, n is relevant with firm lining rigidity EJ, n=1 during EJ=0, n=0 during EJ=∞.Fig. 3 example 1 inner tube of a tyre 3 is inflating rubber inner tubes of a tyre not, the inside and outside side of the inner tube of a tyre respectively with the wheel rim lateral surface, just serve as a contrast medial surface and coincide, and the inner tube of a tyre can have radially precompressed compression before loading.Fig. 4 example 2, the inner tube of a tyre 3 are inflating rubber inner tubes of a tyre.The cover tire of example 1,2 all has tyre bead 13 firmly to anchor on the wheel rim 2.Example 2, one of following three measures can be taked in order to make cover tire medial surface 11 and firm lining lateral surface all good coincideing on whole anchor ring in the inflation back: in (1) mat edge insertion just cover tire medial surface (Fig. 7 example 4).(2) cover tire and just lining be made of one, (3) just served as a contrast the lateral surface shape be equal to or slightly greater than cover tire medial surface under the inflation pressure coincide part shape (when not inflating lining deflection just in cover tire and/or cover tire prestress is arranged).The inner tube of a tyre 3 of example 1 also can be made of one with cover tire, and promptly connecting together with cover tire sidewall 14 becomes example 3 (Fig. 5), and at this moment the inner tube of a tyre can not coincide with firm lining (be called the inner tube of a tyre and just serve as a contrast overlap joint).The cover tire inner chamber of example 3 also can be inflated becomes air-inflation tyre.The whichever example all is to load the back to go up ring thick 12 and increase, and following ring thick 12 reduces, so upper sidewall 14 (upward cover tire sidewall 14) tension stretching, extension, so tire integral rigidity K increases with the extensional rigidity of sidewall 14 (being the sidewall 14 and the inner tube of a tyre 3 among Fig. 5).Bigger extensional rigidity is arranged when the sidewall is straight, and not anchor at when (being from rim Fig. 6, inner tube of a tyre band tyre bead 13) on the wheel rim extensional rigidity all less otherwise the sidewall is crooked shape, setback shape, folding shape (Fig. 5) or cover tire.More than each routine sidewall all can be with reference to these shaped design.A selected number, preferably 0.8, when n≤0.8, tire is called hard tire, this moment is because the big cover tire of EJ preferably has thicker crown 15 and darker gripping pattern to improve braking ability.Otherwise when n＞0.8 tire is called soft tire, the soft tire performance is near radial-ply tyre, and the sidewall extensional rigidity is less to the integral rigidity influence.Because just cover tire 5 strained conditiones that exist of lining are improved, and shape easily.Replace usually the inner tube of a tyre of inflation hand cart tyre with firm lining 4 and former tire can be transformed into not gas filedly, the composite tyre that the inner tube of a tyre 3 and cover tire 5 are made of one becomes a simple and easy embodiment.Common tire is meant the product that is arranged on the wheel rim outside, as the set of the inner tube of a tyre, cover tire.So composite tyre also refers to be arranged on the product in wheel rim 2 outsides, as the inner tube of a tyre 3, cover tire 5, just serve as a contrast 4 set.

Below be can be for reference physical model and design calculation process: (1) does not consider cover tire, regards wheel rim as absolute rigid body, and just lining is regarded the resilient ring that bending stiffness is EJ as, and it is zero elastic spacer that the inner tube of a tyre 3 is regarded bending stiffness between firm lining and wheel rim as.Lining stand under load flexural deformation under the inner tube of a tyre supports just.Semi-ring under the inner tube of a tyre; The following inner tube of a tyre, pressurized; Last semi-ring, the last inner tube of a tyre, tension or do not stress.Can obtain the displacement solution of firm lining with principle of minimum complementary energy, promptly just serve as a contrast the shape W behind the stand under load.Separate by the distributed force that W can get on the inner tube of a tyre.(2) satisfy anti-skidding and the sidewall stiffness requirement according to W design cover tire.

Claims

1, have the band wheel of lining composite tyre just, it is characterized in that: composite tyre is arranged on the wheel rim outside, and composite tyre comprises the inner tube of a tyre, firm lining, cover tire, serial arrangement from inside to outside.

2, the wheel with the firm lining of band composite tyre according to claim 1, it is characterized in that: the inner tube of a tyre is not gas filed.

3, according to claim 2 have a band wheel of lining composite tyre just, it is characterized in that the inside and outside side of the inner tube of a tyre respectively with the wheel rim lateral surface, just serve as a contrast medial surface and coincide.

4, the wheel with the firm lining of band composite tyre according to claim 2 is characterized in that: the inner tube of a tyre overlaps with firm lining, and the inner tube of a tyre and cover tire are made of one.

5, the wheel with the firm lining of band composite tyre according to claim 2, it is characterized in that: composite tyre is a cycle tire.

6, the wheel with the firm lining of band composite tyre according to claim 5 is characterized in that cover tire is soft limit.

7, the wheel with the firm lining of band composite tyre according to claim 2 is characterized in that: the cover tire sidewall is crooked shape, setback shape, folding shape or straight shape.

8, the wheel with the firm lining of band composite tyre according to claim 2, it is characterized in that: cover tire is from rim, and inner tube of a tyre band tyre bead anchors on the wheel rim.

9, according to claim 1 have a band wheel of lining composite tyre just, it is characterized in that: the inner tube of a tyre that composite tyre comprises, just lining, cover tire three or wherein the two can make one arbitrarily.

10, the wheel with the firm lining of band composite tyre according to claim 1 is characterized in that just lining is that steel or plastics just serve as a contrast.