目前壓力試驗機的聲卡機架分為兩種結構類型，一是根據四根立桿組合型，二是總體鑄造件構造。

       At present, the sound card frame of pressure testing machines is divided into two types of structures: one is based on the combination of four upright rods, and the other is the overall casting structure.

　　總體鑄造件式生產加工成本比較高，但不變形;而組合型構造盡管生產成本低，銷售市場價格比較低，甚至有一些壓力試驗機生產廠家的整個設備價格行情在一萬左右，目前市面上此結構試驗儀市場占有率也很多，但此結構遇到的問題較多。

       The overall cost of casting production and processing is relatively high, but it does not deform; Although the production cost of the combined structure is low and the sales market price is relatively low, there are even some pressure testing machine manufacturers whose entire equipment price is around 10000 yuan. At present, there are many market shares of this structure tester, but this structure encounters many problems.

　　聲卡機架組合型的壓力試驗機是由四根立桿支撐點試驗儀的上壓板，而四根立桿是依靠左右螺母鎖緊，假如球座缺乏足夠的可玩性

       The pressure testing machine of the sound card rack combination type is supported by four upright poles to support the upper pressure plate of the testing instrument, and the four upright poles are locked by left and right nuts. If the ball socket lacks sufficient playability

　　有可能出現幾個問題：

       Several issues may arise:

       一是此四根立桿卡緊后有效長度要一致，確保上、下壓板在一定區域范圍平面度;

       Firstly, the effective length of these four upright rods after being tightened must be consistent, ensuring the flatness of the upper and lower pressure plates within a certain area;

　　二是在長期性混泥土破型震動中，卡緊立桿的螺帽非常容易松脫，螺牙易損壞，造成上、下壓板不相等，實驗數據毫無疑問失真。

       Second, in the long-term concrete breaking vibration, the nuts that clamp the upright pole are very easy to loosen, and the screw teeth are easy to damage, resulting in the unequal upper and lower platens, and the experimental data is undoubtedly distorted.

       以上是關于壓力試驗機小知識點，大家還有不理解的，關注邁捷實驗設備，歡迎大家前來選購！

       The above are some small knowledge points about pressure testing machines. If you still don't understand, please follow the Meijie experimental equipment and welcome everyone to come and purchase!