The utility model relates to a force increasing device for a hydraulic chuck system of a core drill. The force increasing device is directly arranged on the lower part of the conventional hydraulic chuck, which comprises a sliding seat, a disc spring, a clamping ring, a novel slip, a piston, a pressure plate, an oil cylinder shell, a pressure oil pipe and a protective cover. The utility model is characterized in that the utility model is characterized in that the utility model is characterized in that two novel slips are uniformly arranged on the sliding seat, and the outer side of the slips is an inclined plane. The outer side of the sliding block is provided with a clamping ring, and the inner side of the clamping ring is provided with a dovetail groove which is matched with the dovetail plate of the pressure plate. The outer side of the clamping ring is provided with a piston, and the piston and the oil cylinder shell form a sealed oil chamber together. A disc spring is arranged between the clamping ring and the sliding seat, and the clamping of the slip can be realized through the disc spring. The utility model has the advantages that the utility model is a hollow structure, and the hollow cavity of the slips is evacuated after the clamp is clamped on the drill pipe, and the clamping force of the slip to the drill pipe is increased, and the lifting capacity of the core drill is improved. The booster of the utility model core drill hydraulic chuck system has the advantages of simple structure, reasonable design, convenient operation; the booster can be realized on the pipe clamping force increase, and can achieve automatic centering drill.
【技术实现步骤摘要】
本技术涉及用于岩心钻机的设备领域。特别涉及一种带有增加钻杆夹持力的岩心钻机液压卡盘系统增力装置。
技术介绍
随着人类对油气资源需求的日益增加以及常规油气藏的不断减少,油气勘探开发深度已从浅部、中部转向深部。随着油气勘探开发深度的不断加大,对深层岩心钻机,尤其是其卡盘系统提出了越来越高的要求。岩心钻机卡盘的主要作用是把钻机的扭矩和轴向力传递给钻具,同时还要卡紧钻具完成钻具的提升工作。随着勘探深度的增加,钻具的重量不断增大,常规的液压式卡盘在提升钻具或者钻进过程中经常会出现打滑现象,而且其定心性能较差,钻探过程中容易造成勘探孔的跑偏,这些缺点使得常规的液压式卡盘已经不能很好地满足深层油气勘探开发的要求。针对这些缺点有学者提出采用双缸双卡瓦的卡盘来提高钻杆夹持力,该做法虽然提高了夹持力度,但该设计卡盘的体积和重量较大,额外增加了钻机的负担,而且其定心性能也未解决。
技术实现思路
本技术针对现有卡盘系统技术的不足,提供一种能自动定心且能提高对钻杆夹持力的增力装置。本技术所采用的技术方案是:在常规的液压卡盘下方加装增力装置,所述增力装置包括碟簧、活塞、卡圈、卡瓦座、新式卡瓦、压板、油缸外壳、压力油管。新式卡瓦安装在卡瓦座上,与卡圈相配合;所述碟簧套装在卡瓦座上;活塞安装在油缸外壳之间,与油缸外壳形成密封油腔,密封油腔与压力油管相连通。在活塞与油缸接触部分,油缸外壳上设有密封圈。所述压板,外表面沿倾斜面方向设有燕尾凸台,所述的卡圈与压板燕尾凸台接触部分设有燕尾槽,与压板相配合。进一步地,卡瓦座上设置有两个新式卡瓦,卡瓦座的上端与连接板用螺栓连接,可以和常规液压卡盘进行连 ...
【技术保护点】
一种岩心钻机液压卡盘系统的增力装置,其特征在于:所述增力装置包括卡瓦座、新式卡瓦、碟簧、卡圈、压板、活塞、油缸外壳、压力油管;所述碟簧套装在卡瓦座上;活塞安装在油缸外壳之间,与油缸外壳形成密封油腔,密封油腔与压力油管相连通;所述压板外表面沿倾斜面方向设有燕尾凸台,所述的卡圈与压板燕尾凸台接触部分设有燕尾槽,与压板相配合。
【技术特征摘要】
1.一种岩心钻机液压卡盘系统的增力装置,其特征在于:所述增力装置包括卡瓦座、新式卡瓦、碟簧、卡圈、压板、活塞、油缸外壳、压力油管;所述碟簧套装在卡瓦座上;活塞安装在油缸外壳之间,与油缸外壳形成密封油腔,密封油腔与压力油管相连通;所述压板外表面沿...
【专利技术属性】
技术研发人员:周汉国,刘振,孟宪波,王金铎,郭元岭,杨峰,李静,王昌,孙麒,
申请(专利权)人:中国石油化工股份有限公司胜利油田分公司油气勘探管理中心,中国石油大学华东,中国石油化工股份有限公司胜利油田分公司石油工程技术研究院,
类型:新型
国别省市:山东;37
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。