To study the reinforcement mechanism of the rock anchor, the test model was made simulating the real conditions and the pull test was done under the static load.

为研究钢管岩石锚杆的锚固机理，模拟实际情况制作试验模型并进行了静载作用下模型的拉拔试验。

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The predicting formula of the drawbar pull of driven wheels running on the sand is obtained by model test.

通过模拟试验，得出了驱动轮在砂地上行驶时的挂钩牵引力预测公式。

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The utility model provides a throttle implementing mechanism of an engine test bed, which includes a motor, a pull block that can pull the engine throttle is fixed on the rotating axis of the motor;

本实用新型提供一种发动机试验台的油门执行机构，包括电机，该电 机的转轴上固定有可牵拉发动机油门的拉块；

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