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Heavy Duty Pneumatic Tires

A technology for pneumatic tires and treads, applied in heavy-duty tires, tire parts, tire treads/tread patterns, etc., can solve the problems of delay in material loading and unloading operations, low driving speed, low operating efficiency, etc., and improve soil discharge. performance effect

Active Publication Date: 2017-12-12
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to an insufficient grip effect of the edge of the block in the kick-out of the block on such roads and causes problems of vehicle skidding when traction and braking forces are applied
For example, the problem has led to the possibility that dump trucks, etc. used in mines are subjected to low travel speeds, and material loading and unloading operations by dump trucks, etc., are delayed, resulting in lower operational efficiency

Method used

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  • Heavy Duty Pneumatic Tires
  • Heavy Duty Pneumatic Tires
  • Heavy Duty Pneumatic Tires

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] One of the disclosed embodiments is described below with reference to the accompanying drawings.

[0033] figure 1 A tread surface 1 of a heavy duty pneumatic tire according to one of the disclosed embodiments is shown. In this embodiment, two or more (two in the illustrated example) circumferential direction grooves 2 each extending continuously in the tread circumferential direction are formed in the tread surface 1, for example, as The zigzag shown in the attached image. Also, as shown in the drawings, for example, lug grooves 5 are formed on the tread surface 1 toward each of the circumferential grooves 2 adjacent to each other in the tread width direction at, for example, turning points. At this turning point, the circumferential groove 2 protrudes inward in the tread width direction. These circumferential grooves 2 and lug grooves 5 divide each of the plurality of block portions 6 . In the example shown, each block 6 spans the equatorial plane C of the tyre. ...

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Abstract

Provided is a heavy duty pneumatic tire which has improved mud-channeling performance for the ground-contacting surface thereof so that the edges thereof are able to sufficiently exhibit a scraping effect without the rigidity of the blocks being significantly compromised, which would have worsened the abrasion-resistance performance thereof. In the case of this tire, a shallow groove (60) is provided on each block (6), and the shallow groove (60) includes multiple width-direction groove sections (61-63), connecting groove sections (64, 65), and circumferential-direction groove sections (66, 67).

Description

technical field [0001] The present invention relates to a heavy-duty pneumatic tire having, on its tread surface, blocks each defined by two or more circumferential grooves and lug grooves, the circumferential grooves extending continuously in the tread circumferential direction , and the lug grooves are opened toward each of the circumferential grooves adjacent to each other in the tread width direction. Background technique [0002] Heavy-duty tires are commonly used in dump trucks for construction sites, mines, and the like. Dump trucks can for example drive on road surfaces in muddy areas where a layer of soft clay of about a few centimeters is formed on hard ground after rainfall. [0003] When running on the road surface formed by the above-mentioned clay layer, the tire is attached to the clay layer in a state where about several tens percent of the groove depth of the circumferential groove formed on the tread surface is buried in the clay layer. A vehicle rolling ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C11/11B60C11/04B60C11/13
CPCB60C11/0311B60C2011/0033B60C2011/0346B60C2011/0362B60C2200/065
Inventor 武居吾空
Owner BRIDGESTONE CORP