CN202499684U - 伸缩式套筒柱塞液压千斤顶 - Google Patents

伸缩式套筒柱塞液压千斤顶 Download PDF

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CN202499684U
CN202499684U CN2012201466838U CN201220146683U CN202499684U CN 202499684 U CN202499684 U CN 202499684U CN 2012201466838 U CN2012201466838 U CN 2012201466838U CN 201220146683 U CN201220146683 U CN 201220146683U CN 202499684 U CN202499684 U CN 202499684U
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陈玉金
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Abstract

本实用新型涉及一种矿山用伸缩式套筒柱塞液压千斤顶。目前所使用的单柱塞液压千斤顶,其行程不能满足工作要求。本实用新型由缸体,一级套筒柱塞,二级套筒柱塞,端盖、丝杠、可逆单向阀组成,其特征在于,缸体内壁和一级套筒柱塞底部凸台滑动连接,一级套筒柱塞内壁与二级套筒柱塞底部凸台滑动连接。端盖与二级套筒柱塞顶端连接,丝杠与端盖旋合连接。可逆单向阀与缸体底部通孔连接。液压动力来自井下液压泵站。当压力液通过可逆单向阀进入缸体底腔,二级套筒柱塞升高,并带动一级套筒柱塞一起升高至行程终止。丝杠补偿两个套筒柱塞的行程。工作完毕,搬动可逆单向阀放液,两个套筒柱塞在自重下恢复原位。有益效果是:行程增加,工作范围加大。

Description

伸缩式套筒柱塞液压千斤顶
技术领域:本实用新型涉及一种煤矿井下起重用的伸缩式套筒柱塞液压千斤顶。
背景技术:煤矿井下安装和拆除采煤设备时,需要做大量起重和推移工作。目前所使用的单柱塞液压千斤顶,其工作行程不能满足工作需求。在实际工作中,往往将两个单柱塞液压千斤顶叠加使用。这种操作方法不安全,速度慢。
发明内容:本实用新型的目的是要提供一种伸缩式套筒柱塞液压千斤顶。其一级、二级套筒柱塞的行程和丝杠的长度能满足起重或推移工作的需要。本实用新型解决技术问题所采用的技术方案是:它由缸体、一级套筒柱塞、二级套筒柱塞、端盖、丝杠、可逆单向阀组成,其特征在于,缸体内壁和一级套筒柱塞底部凸台滑动连接,一级套筒柱塞内壁与二级套筒柱塞底部凸台滑动连接。端盖与二级套筒柱塞顶部连接,丝杠与端盖旋合连接,可逆单向阀与缸体底部通孔连接。可逆单向阀有进液和放液两种作用。液压动力由井下采煤工作面液压泵站提供,当压力液通过可逆单向阀、缸体底部通孔进入二级套筒柱塞底端下腔时,在压力液的作用下,二级套筒柱塞向上伸高顶起,当二级套筒柱塞底端的凸台与一级套筒柱塞顶端的凸台接触时,一级、二级套筒柱塞一起升高顶起,直至一级套筒柱塞底端的凸台与缸体顶端的凸台接触,则行程终止。调整丝杠补偿一级、二级套筒柱塞行程的不足。工作完毕,拆掉压力液管,搬动可逆单向阀手柄,压力液释放。一级、二级套筒柱塞在自重力作用下恢复原位。
应该明确指出,本实用新型与现有技术相比较的显著效果是,柱塞工作行程加长,适用范围大。
附图说明:附图为本实用新型局部剖面结构示意图。
具体实施方式:如附图所示,缸体6内壁与一级套筒柱塞7的下端凸台4滑动连接,缸体6的上端凸台9与一级套筒柱塞7园柱面滑动连接。一级套筒柱塞7的内壁与二级套筒柱塞8的下端凸台5滑动连接,一级套筒柱塞7的上端凸台10与二级套筒柱塞8的园柱面滑动连接。端盖12与二级套筒柱塞8顶端连接。丝杠11和端盖12旋合连接。可逆单向阀3与缸体6底部通孔2连接。底部通孔2与二级套筒柱塞8底部下腔1连通。

Claims (1)

1.伸缩式套筒柱塞液压千斤顶,它由缸体、一级套筒柱塞、二级套筒柱塞、端盖、丝杠、可逆单向阀组成,其特征在于,缸体内壁和一级套筒柱塞底部凸台滑动连接,一级套筒柱塞内壁与二级套筒柱塞底部凸台滑动连接。
CN2012201466838U 2012-03-31 2012-03-31 伸缩式套筒柱塞液压千斤顶 Expired - Fee Related CN202499684U (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113173518A (zh) * 2021-05-19 2021-07-27 山东华樱轨道装备有限公司 一种货车车体架车机

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113173518A (zh) * 2021-05-19 2021-07-27 山东华樱轨道装备有限公司 一种货车车体架车机

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