Tire bead structure capable of preventing translocation of tire bead for off-the-road tire with inner tube

Abstract

The invention discloses a tire bead structure capable of preventing translocation of a tire bead for an off-the-road tire with an inner tube. The invention comprises a tire bead body and is characterized in that: the tire bead bottom diameter Dr of the tire bead structure is 1 mm shorter than a specified rim diameter D; a tire bead bottom angle is 1 degree smaller than a rim contacting surface angle which is 5 degrees. According to the invention, the design of the tire bead structure in the invention enables the interior shape of the tire bead not to be changed and extra reinforcing members to be utilized at the exterior of the tire; mainly through reasonable cooperation between a tire bead part and a wheel rim, deformation of the tire bead part towards the transverse outer flank of the tire and circumferential rotation displacement towards the wheel rim can be effectively inhibited when the tire is in a state of high load driving, and damage of the tire bead in an early stage caused by wearing at contact sites where the tire bead part contacts with the flange and the bottom of the wheel rim is avoided.

Description

technical field [0001] The invention relates to a tire, in particular to a bead structure of an engineering machinery tire with an inner tube for preventing bead inversion. Background technique [0002] The air pressure of construction machinery tires is relatively low, the overload is serious, and the tire deformation is relatively large. Moreover, such tires are usually used in mines or other construction sites. When the road conditions make the tire work normally, it needs to bear a huge torque. If the tire and the rim do not cooperate well, it often leads to the rotation between the tire and the rim, and the early damage of the tire such as grinding hole, bursting of the hole, and rupture of the bead. . [0003] In the past, many tire manufacturers used the method of large interference fit in order to prevent the rotation of the OTR tire while transmitting strong traction. Transmits power and inhibits tire rotation. However, this method will bring the following advers...

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Problems solved by technology

However, this method will bring the following adverse effects: 1) It will cause the strong interference loss of the bead, and increase the number of steel wires to ensure the strength of the bead, which will lead to an increase in cost; 2) Due to the huge frictional force at the bottom of the bead The contact pressure between the outside and the rim is reduced so that the friction force of this part is also reduced, which partially offsets the total friction force; 3) The large interference fit greatly affects the convenience of tire loading and unloading and the efficiency of loading and unloading work

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