The utility model provides a short joint and a horizontal directional drilling machine, wherein a short joint includes a protective short joint, a reducing joint, a drill collar and a main shaft; both sides of the protective short joint are provided with a male thread I, one end of the reducing joint is provided with a female thread I, the other end of the reducing joint is provided with a male thread II, one end of the drill collar is provided with a female thread II, and the other end of the drill collar is provided with a male thread III; the protective short joint The male thread I of the head is matched with the female thread I of the reducing joint to realize the tightening of the protective short joint in the reducing joint; the female thread II of the drill collar is matched with the male thread II of the reducing joint to realize the tightening of the reducing joint in the drill collar; the male thread III of the drill collar is matched with the female thread III of the main shaft to realize the tightening of the drill collar in the main shaft. The utility model makes the protection short joint damaged first when the stress is too large through the male and female thread coordination between the protection short joint, the reducing joint, the drill collar and the main shaft, but the reducing joint can bear greater torque and tension, and the reducing joint is not damaged when the stress is applied.
【技术实现步骤摘要】
一种短接头及水平定向钻机
本技术属于水平定向钻机中动力头辅助装置,具体涉及一种短接头。
技术介绍
在非开挖行业中,钻机通常通过短接头与钻杆连接,传递扭矩和推拉力,通常钻杆螺纹连接形式为母螺纹输入,公螺纹输出,由于相同规格螺纹,公螺纹较母螺纹更易损坏,通常钻机通常为母螺纹输出,中间通过短接头与钻杆连接,由于短接头经常拆卸,通常最先损坏,一般在短接头与钻杆之间增加一个保护短接头和变径接头。而由于断裂位置集中发生在公螺纹中径位置,为保证短接头正常使用,通常将保护短接作为易损件使用。由于现有中的连接方式造成了保护短接头和变径接头易损坏,如果变径接头损坏的话,整个机子将会停机,这严重影响了工作进度。
技术实现思路
本技术提供一种短接头,用以改善现有技术中存在的短接头螺纹断裂而影响机器正常施工的问题。本技术按以下技术方案实现:一种短接头,包括保护短接头、变径接头、钻铤和主轴;所述保护短接头两侧均设有公螺纹Ⅰ,所述变径接头一端设有母螺纹Ⅰ,变径接头另一端设有公螺纹Ⅱ,所述钻铤一端设有母螺纹Ⅱ,钻铤另一端设有公螺纹Ⅲ;所述保护短接头的公螺纹Ⅰ与变径接头的母螺纹Ⅰ配合实现保护短接头旋紧在变径接头中;所述钻铤的母螺纹Ⅱ与变径接头的公螺纹Ⅱ配合实现变径接头旋紧在钻铤中;所述钻铤的公螺纹Ⅲ与主轴的母螺纹Ⅲ配合实现钻铤旋紧在主轴中。进一步,所述变径接头中的公螺纹Ⅱ的规格比变径接头中的母螺纹Ⅰ规格大。一种水平定向钻机,包括前述的一种短接头。本技术有益效果:本技术通过保护 ...
【技术保护点】
1.一种短接头,其特征在于:包括保护短接头、变径接头、钻铤和主轴;/n所述保护短接头两侧均设有公螺纹Ⅰ,所述变径接头一端设有母螺纹Ⅰ,变径接头另一端设有公螺纹Ⅱ,所述钻铤一端设有母螺纹Ⅱ,钻铤另一端设有公螺纹Ⅲ;/n所述保护短接头的公螺纹Ⅰ与变径接头的母螺纹Ⅰ配合实现保护短接头旋紧在变径接头中;/n所述钻铤的母螺纹Ⅱ与变径接头的公螺纹Ⅱ配合实现变径接头旋紧在钻铤中;/n所述钻铤的公螺纹Ⅲ与主轴的母螺纹Ⅲ配合实现钻铤旋紧在主轴中。/n
【技术特征摘要】
1.一种短接头,其特征在于:包括保护短接头、变径接头、钻铤和主轴;
所述保护短接头两侧均设有公螺纹Ⅰ,所述变径接头一端设有母螺纹Ⅰ,变径接头另一端设有公螺纹Ⅱ,所述钻铤一端设有母螺纹Ⅱ,钻铤另一端设有公螺纹Ⅲ;
所述保护短接头的公螺纹Ⅰ与变径接头的母螺纹Ⅰ配合实现保护短接头旋紧在变径接头中;
所述钻铤的母螺纹Ⅱ与变径...
【专利技术属性】
技术研发人员:杨明,吕伟祥,韩立华,马滔,李明,李宽宽,孙磊,闫志霞,
申请(专利权)人:徐州徐工基础工程机械有限公司,
类型:新型
国别省市:江苏;32
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