The utility model discloses a core half combined pipe ejection device, which comprises a fixed pipe for placing the core tube assembly and a cylinder for pushing the half combined pipe, one end of the fixed pipe is connected with a connecting sleeve, the connecting sleeve is connected with the cylinder block, the other end of the fixed pipe is connected with a retaining sleeve, the retaining sleeve is provided with a thrust surface, which is used to block the protection when the cylinder pushes the half combined pipe The guard pipe moves, and the retaining sleeve is also provided with a core hole, which can be extended from the core hole when the semi combined pipe is pushed by the cylinder top. When the utility model is used, the core taking tube assembly is placed in the fixed tube. When the oil cylinder pushes the end of the half closed tube, the thrust surface in the retaining sleeve can block the movement of the protective tube, so as to form a sliding shear force between the half closed tube and the protective tube. At the same time, the half closed tube can extend from the core hole under the action of the oil cylinder pushing. The device uses the hydraulic pushing method to push the half closed tube out of the protective tube, It will not damage the core and is easy to operate.
【技术实现步骤摘要】
一种岩芯半合管顶出装置
本技术涉及岩土取芯领域,具体涉及一种岩芯半合管顶出装置。
技术介绍
取芯是指为了解地层地质情况,对所钻地层进行岩土取样的过程,是通过将取芯钻头与空心钻杆相连进行取芯。取芯钻头是由钻头体和设置在钻头体前端的多个合金刀片构成,在钻头体内开设有前后贯通的取芯通孔,空心钻杆内设有取芯管组件。目前公司开发了一种取芯管组件包括两个半合管和套设于其外的保护管,使用时两个半合管拼合形成圆管。在取芯结束后,将取芯管组件从钻杆中取出并移除保护管,两个半合管自动分开即可得到岩芯。由于岩芯受到挤压进入半合管后会将半合管涨大,使半合管外壁与保护管内壁之间形成涨紧的过盈配合,从而导致半合管不易从保护管中取出,因此,有必要设计一种顶出装置,以便将岩芯半合管从保护管中顶出。
技术实现思路
本技术目的在于:针对取芯后半合管与保护管之间形成涨紧的过盈配合,导致半合管与保护管不易分离的问题,提供一种岩芯半合管顶出装置,该装置能够将半合管从保护管中顶出,且不会损坏岩芯,使用操作方便。为了实现上述目的,本技术采用的技术 ...
【技术保护点】
1.一种岩芯半合管顶出装置,其特征在于,包括用于放置取芯管组件的固定管和用于顶推半合管的油缸,所述固定管一端连有连接套,所述连接套与油缸缸体相连,所述固定管另一端连有挡套,所述挡套内设有止推面,所述止推面用于在油缸顶推半合管时阻挡保护管移动,所述挡套上还设有出芯孔,当所述半合管受到油缸顶推力后能从所述出芯孔中伸出。/n
【技术特征摘要】
1.一种岩芯半合管顶出装置,其特征在于,包括用于放置取芯管组件的固定管和用于顶推半合管的油缸,所述固定管一端连有连接套,所述连接套与油缸缸体相连,所述固定管另一端连有挡套,所述挡套内设有止推面,所述止推面用于在油缸顶推半合管时阻挡保护管移动,所述挡套上还设有出芯孔,当所述半合管受到油缸顶推力后能从所述出芯孔中伸出。
2.根据权利要求1所述的岩芯半合管顶出装置,其特征在于,所述挡套与固...
【专利技术属性】
技术研发人员:李智,田赟,陆昕,
申请(专利权)人:成都哈迈岩土钻掘设备厂,
类型:新型
国别省市:四川;51
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