The invention broadens the adjusting range of the axial pulsation intensity so as to better meet the demand of screw rod axial pulsation of the squeeze machine.

本发明扩大了轴向脉动强度的调节范围，从而可以更好地满足挤出机螺杆轴向振动的要求。

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The utility model provides a novel supporting pulling device which is provided with a screw rod connected with the center of an adjusting supporting body through inner threaded holes.

本实用新型提供了一种新颖的顶拔器，它有一根螺杆与调节支承体的中心内螺孔联接。

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