根據永保機械裝載機專家的計算和分析，小型裝載機活塞桿彎曲的原因有以下幾點：
1、動臂缸兩端與機架和動臂連接有傾斜現象，支承寬度過小
Both ends of the boom cylinder is connected to the frame and boom tilt, bearing width is too small.
2、裝配調整間隙不當，導致側面磨損嚴重
Adjust the gap to improper assembly, leading to serious side wear.
3、動臂缸下端排料處沉積料積累和動臂缸下端外側磨損
Sedimentary material accumulation and the lower boom cylinder boom cylinder discharge at the lower end of the outer wear.
4、沉積料積累嚴重，旋轉摩擦力較大
Severe accumulation of sedimentary material, large rotary friction.

同時，永保機械的專家為大家提供了一下改進措施：

1、加大支承寬度，一般支承寬度為活塞桿直徑的1.2～1.5倍。
Increase the bearing width, the width of the support rod diameter generally 1.2 to 1.5 times.
2、在裝配過程中，充分利用調整墊保證動臂缸兩端與機架和動臂的配合間隙與對中性，提高調整墊材料耐磨性能。
During assembly, adjustment pad to ensure full use of the boom cylinder with the gap at both ends of the rack and boom with neutral, adjust the pad material to improve wear resistance.
3、改進排料結構，增大排料板的開口距離H1和傾斜角度α，減少落料的積存，利于落料順利自然排出；增大動臂缸下端與主機連接處排料的距離H2，以利于大尺寸石料的排出。
Improved nesting structure, increasing the discharge opening from the board of H1 and tilt angle α, reducing the backlog blanking, blanking conducive to the smooth natural discharge; increasing the lower end of the boom cylinder connection with the host nesting distance H2, in order to facilitate discharge large stone.
4、使用說明書規定對積存料定期清除的要求。改進后，活塞桿未再發生彎曲。
Use the instructions provided on the accumulation of material removed regularly request. After the improvements, the rod bent not happen again.

山東裝載機：http://www.greennutrition.cn/