1. It consists of steering wheel, steering shaft, worm, gear sector, pitman arm drag link, steering knuckle arm, king pin, steering arms, tie rod, front axle and steering knuckle.

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2. It consists of steering wheel, steering shaft, worm, gear sector, pitman arm drag link, steering knuckle arm, king pin, steering arms, tie rod, front axle and steering knuckle.

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3. The stress of E-grade steel coupler knuckle was analyzed and the expression of stress intensity factor of the cracks on the coupler knuckle wrist area was given.

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4. It consists of steering wheel, steering shaft, worm, gear sector, pitman arm drag link, steering knuckle arm, king pin, steering arms, tie rod, front axle and steering knuckle.

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5. It consists of steering wheel, steering shaft, worm, gear sector, pitman arm drag link, steering knuckle arm, king pin, steering arms, tie rod, front axle and steering knuckle.

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