To estimate the concrete compressive strength, the Pullout force when the anchorage system fails is measured.

为了估计混凝土抗压强度，抗拔力锚固系统出现故障时，测量。

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The positive effect of the present invention is that: (1) external is amplified by the gear ratio of the gear components to form stronger pullout force;

本发明的积极效果是：（1）通过齿轮部件的齿轮比将外力放大从而形成强大的拉出力；

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The positive effect of the present invention is that: (1) external is amplified by the gear ratio of the gear components to form stronger pullout force;

本发明的积极效果是：（1）通过齿轮部件的齿轮比将外力放大从而形成强大的拉出力；

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