成都升降平臺舉升速度不穩(wěn)定從現(xiàn)場使用來看,經(jīng)常出現(xiàn)升降抖動、上升位置較難檢測找不到中位、上升時有沖擊噪聲、液壓缸滲油等現(xiàn)象.Chengdu lifting platform lifting speed is not stable from the use of the field of view, often rise and rise jitter, rising position is difficult to detect can not find the middle position, the rise of impact noise, hydraulic cylinder oil leakage and other phenomena.

1.經(jīng)現(xiàn)場察看主要是成都升降液壓缸的舉升速度過快,致使故障率增加,嚴(yán)重影響了生產(chǎn)效率.升降液壓缸舉升速度不穩(wěn)定的原因分析液壓缸舉升速度不穩(wěn)定,其原因很多,有設(shè)計方面的、也有加工制造和使用方面的。The scene view is mainly Chengdu lifting hydraulic cylinder lifting speed too fast, resulting in the increase of failure rate, seriously affecting the efficiency of production. The reason of lifting speed lifting hydraulic cylinder stability analysis of hydraulic cylinder lifting speed is not stable, for many reasons, there are design, there are aspects of manufacture and use.

2.針對該液壓系統(tǒng)存在的故障,運(yùn)用速度剛度理論,分析升降液壓缸舉升速度不穩(wěn)定的原因。According to the faults of the hydraulic system, using the theory of velocity stiffness, the reasons for the instability of the lifting speed of the hydraulic cylinder are analyzed.

3.當(dāng)負(fù)載不變時,節(jié)流閥口進(jìn)越小,則系統(tǒng)速度剛度進(jìn)越高;反之,若節(jié)流閥開口面積越大,則進(jìn)越低.When the load is constant, the throttle orifice into the smaller, the system speed stiffness into the higher; otherwise, if the throttle valve opening area, the lower the inlet.

4.當(dāng)負(fù)載不變時，低速下的速度剛度好,當(dāng)負(fù)載變化時,負(fù)載小時的速度剛度好.When the load is constant, the speed of the low speed is good. When the load changes, the speed of the load hour is good.

5.提高供油壓力加大液壓缸有效作用面積,可提高速度剛度.Increase the supply pressure to increase the effective area of the hydraulic cylinder, can improve the speed stiffness.

綜上所述，引發(fā)成都升降平臺該故障的主要原因是液壓系統(tǒng)提升調(diào)速回路設(shè)計不合理造成.In summary, the main reason for the failure of the Chengdu lift platform is the hydraulic system to upgrade the speed loop design is not reasonable.