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Polyurethane sandwiched tire and preparation method thereof

A polyurethane and tire technology, applied in tire parts, tires, tire sidewalls, etc., can solve problems such as poor tire elasticity, achieve high resilience and excellent performance, eliminate assembly work, and reduce rubber components and load-carrying cross-sectional area Effect

Inactive Publication Date: 2016-05-04
李明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] Another object of the present invention is to provide a method for preparing a polyurethane sandwich tire. The prepared tire is hard on the outside and soft on the inside, and has high elasticity under the premise of high wear resistance. question

Method used

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  • Polyurethane sandwiched tire and preparation method thereof
  • Polyurethane sandwiched tire and preparation method thereof
  • Polyurethane sandwiched tire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A polyurethane sandwich tire, such as figure 1 with figure 2 As shown, it includes a cover tire 1 and an inner tube 2 wrapped inside the cover tire. The Shore hardness of the cover tire 1 is greater than the Shore hardness of the inner tube 2. The groove 201 with a vertical direction and a semicircular cross section is provided with ribs 101 corresponding to the groove 201 with the same number, equal length and semicircular cross section on the inner tread of the tire. The ribs 101 of the tire cover are placed in the inner tube groove 201 and bonded together. That is, wave-type semicircular bonding is used to increase the bonding area between the inner tube and the outer tire, strengthen the adhesive force, and disperse the force direction of the inner tube. When the outer tire is in contact with the ground, the outer tire is transmitted to the vertical upward effect of the inner tube. The force is distributed to different directions, reducing the damage to the inner...

Embodiment 2

[0045] A polyurethane sandwich tire, such as figure 1 with figure 2 As shown, it includes a cover tire 1 and an inner tube 2 wrapped inside the cover tire. The Shore hardness of the cover tire 1 is greater than the Shore hardness of the inner tube 2. The groove 201 with a vertical direction and a semicircular cross section is provided with ribs 101 corresponding to the groove 201 with the same number, equal length and semicircular cross section on the inner tread of the tire. The ribs of the cover tire are placed in the groove of the inner tube and bonded together.

[0046] And, the sidewall two sides of described cover tire all are provided with a circle of shock-absorbing buffer hole 103 perpendicular to the traveling direction, described shock-absorbing buffer hole 103 is circular, and described shock-absorbing buffer hole 103 is " V " along the sidewall. Glyph distribution. The main function is; because high-hardness polyurethane has high support and tensile strength, ...

Embodiment 3

[0048] A polyurethane sandwich tire, such as Figure 1~4 As shown, it includes a cover tire 1 and an inner tube 2 wrapped inside the cover tire. The Shore hardness of the cover tire 1 is greater than the Shore hardness of the inner tube 2. The groove 201 with a vertical direction and a semicircular cross section is provided with ribs 101 corresponding to the groove 201 with the same number, equal length and semicircular cross section on the inner tread of the tire. The ribs of the cover tire are placed in the groove of the inner tube and bonded together.

[0049] And, the sidewall two sides of described cover tire all are provided with a circle of shock-absorbing buffer hole 103 perpendicular to the traveling direction, described shock-absorbing buffer hole 103 is circular, and described shock-absorbing buffer hole 103 is " V " along the sidewall. Glyph distribution.

[0050] Furthermore, the inner tire sidewall is provided with an annular groove 202, which is bonded to the ...

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Abstract

The invention discloses a polyurethane sandwiched tire. The polyurethane sandwiched tire comprises an outer tire and an inner tire wrapped in the outer tire. The shore hardness of the outer tire is higher than that of the inner tire. The outer tire surface of the inner tire is provided with a circle of grooves which are through in the left and right direction, wherein the direction of the grooves is perpendicular to the tire running direction, and the cross section of each groove is semicircular. The inner tire surface of the outer tire is provided with convex edges which correspond to the grooves, wherein the number of the convex edges is equal to that of the grooves, the length of the convex edges is equal to that of the grooves, and the cross section of each convex edge is also semicircular. The convex edges of the outer tire are arranged in the grooves of the inner tire in a bonding mode. The invention further discloses a preparation method of the polyurethane sandwiched tire. According to the preparation method, the inner tire and the outer tire are formed through a two-time liquid injection method. The prepared polyurethane sandwiched tire has the advantages of being high in resilience, resistant to tear and nail puncture and the like; especially, the high resilience is excellent and is incomparable for that of rubber, and the overall performance approximates the resilience of a pneumatic tire.

Description

technical field [0001] The invention belongs to the technical field of tires, and in particular relates to a polyurethane sandwich tire and a preparation method thereof. Background technique [0002] The research on polyurethane tires in foreign countries started earlier. Since the 1970s, large foreign rubber tire companies have been looking for and developing alternative products for rubber tires. Polyurethane elastomer, known as liquid rubber, is the only choice. At present, there are mainly three kinds of process development and research. [0003] ①Polyurethane elastomer solid tire [0004] David Brothers of the United States uses polyurethane elastomers to develop new Durotane tires that are directly mounted on the wheels of electric vehicles, which show good wear resistance when transporting goods under harsh conditions. [0005] The British company Dunlop developed polyurethane solid tires for transporting particularly heavy cargo. [0006] Goodyear will focus on po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C7/10B60C13/00B29D30/02B29D30/04
CPCB60C7/10B29D30/02B29D30/04B60C13/00
Inventor 李明
Owner 李明
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