液压支架快速进回液抗冲击双伸缩立柱制造技术

本实用新型专利技术公开了一种液压支架快速进回液抗冲击双伸缩立柱，包括外缸体、中缸体、活柱体，设置在中缸体缸底的底阀；设置在所述中缸体、外缸体缸口处的导向套均以矩形螺纹与中缸体、外缸体的缸口内壁相连接并通过止退螺钉防松；在外缸体的底部位于供液接口的两侧分别设置有安全阀快速接头。本实用新型专利技术优点在于大大提高了双伸缩立柱的抗冲击能力；保证了双伸缩立柱快速进回液和过载时快速卸载。因此满足了缸径在５００ｍｍ、工作阻力在８４００ＫＮ、展开长度在６５１３ｍｍ以上双伸缩立柱的技术要求。解决了大缸径双伸缩立柱升降柱慢的难题，达到支架移架速度小于１０秒工作要求。（*该技术在2018年保护过期，可自由使用*）

Hydraulic support; quick return and return fluid; impact resistance; double telescopic column

The utility model discloses a hydraulic support fast liquid inlet and return double telescopic shock, including the outer cylinder, the cylinder, cylinder, cylinder bottom is set in at the end of the set; the guide sleeve cylinder, the outer cylinder mouth of the inner wall in cylinder and cylinder in rectangular thread the outer cylinder, and is connected by a retaining screw locking; on both sides of the outer cylinder at the bottom for the liquid interface are respectively provided with a safety valve quick connector. The utility model has the advantages of greatly improving the shock resistance of the double telescopic upright column and ensuring the quick unloading of the double telescopic upright column when the liquid is rapidly returned into the liquid and is overloaded. Thus the bore in the 500mm, the working resistance in 8400KN, expand the length is more than 6513mm of the double telescopic prop technical requirements. To solve the large diameter double telescopic lifting column slow problem, to support moving speed of less than 10 seconds of work requirements.

【技术实现步骤摘要】

【技术保护点】
一种液压支架快速进回液抗冲击双伸缩立柱，包括外缸体（１）、中缸体（２）、活柱体（３），设置在中缸体（２）缸底的底阀（９）；其特征在于：设置在所述中缸体（２）、外缸体（１）缸口处的导向套（４、５）均以矩形螺纹与中缸体（２）、外缸体（１）的缸口内壁相连接并通过止退螺钉（８）防松；在外缸体（１）的底部位于供液接口（６）的两侧分别设置有安全阀快速接头（７）。

【技术特征摘要】

【专利技术属性】
技术研发人员：向家雨，王维孝，刘富营，刘学丽，董江林，郭丹丹，
申请(专利权)人：郑州煤矿机械集团股份有限公司，
类型：实用新型
国别省市：41[中国|河南]