The utility model relates to an anti-clipping screw-down machine for the coupling of a sucker pump barrel, which comprises a support seat, a torsion arm, an oil pressure valve group and a clamping assembly. The clamping assembly part is provided with a circularly symmetrically distributed plate tooth. The contact surface between the plate tooth and the coupling of the pump barrel is an arc surface, and the plate tooth is fixed on the plate tooth seat, and the arc surface of the plate tooth is provided with an oblique direction. A convex surface is formed between the alveolus and the oblique alveolus. After the four-point synchronous clamping of the plate teeth, the stress area of the coupling surface of the pump barrel increases, and the clamping mark and damage of the coupling of the pump barrel are reduced without skidding. The concave curved plate teeth and the zigzag alveolus are designed to increase the contact area of the coupling of the pump barrel, increase the friction force and tighten the coupling of the pump barrel better. The utility model improves the sealing property of the pump barrel coupling, reduces the clamping mark and damage of the pump barrel coupling, reduces the damage of the plate teeth and the service life, and enhances the service life of the pump barrel coupling.
【技术实现步骤摘要】
一种抽油泵筒接箍防夹痕拧扣机
:本技术涉及稠油井蒸汽开采和常规开采设备,特别是涉及一种抽油泵筒接箍防夹痕拧扣机。
技术介绍
:原来在紧固泵筒接箍时,泵筒接箍两端在使用链钳人力作用下紧固。为了满足工艺要求,现在采用液压拧扣机来进行泵筒接箍的紧固工作。其特点是背钳夹住泵筒下接箍,主钳夹住泵筒上接箍,主钳和背钳都通过板牙夹紧主钳旋转工作,对泵筒接箍进行紧固。其特点是紧固后的泵筒接箍密封性能好,由于现有的板牙的接触面为平面,在紧固时加紧部为线接触,板牙的牙槽只有中间部分的3个牙槽和泵筒接箍表面接触,形成接触面积小摩擦力小的缺点。紧固过程中由于液压动力下强大的扭矩,拧扣机板牙牙槽容易对泵筒接箍造成夹痕或者损伤。为了方便更换板牙,现有的板牙和板牙座位嵌入销固定连接,但这种连接方式在冲压过程中存在板牙与板牙座相对移动错位的现象,也会造成在泵筒接箍外表出现不规则的划痕,板牙牙槽会把泵筒接箍表面的磷化层挂掉或者旋转挤压形成损伤凸起。泵筒接箍表面形成损伤凸起需要用钢锉锉平费时费力,刮掉的磷化层和锉平后的地方,没有了防腐保护很快会生锈,影响产品质量。损伤凸起和挂掉的磷化层落入板牙牙槽聚 ...
【技术保护点】
1.一种抽油泵筒接箍防夹痕拧扣机,包括支撑座、扭臂、油压阀组、夹具总成,其特征是,夹具总成部分设置有圆周对称分布的板牙,所述板牙与泵筒接箍的接触面为弧面,板牙固设在板牙座上,所述板牙弧面上设置有斜向牙槽,斜向牙槽之间形成牙凸面。
【技术特征摘要】
1.一种抽油泵筒接箍防夹痕拧扣机,包括支撑座、扭臂、油压阀组、夹具总成,其特征是,夹具总成部分设置有圆周对称分布的板牙,所述板牙与泵筒接箍的接触面为弧面,板牙固设在板牙座上,所述板牙弧面上设置有斜向牙槽,斜向牙槽之间形成牙凸面。2.根据权利要求1所述一种抽油泵筒接箍防夹痕拧扣机,其特征是,板牙数量为四个,绕泵筒接箍圆周间隔90度角排列...
【专利技术属性】
技术研发人员:倪海波,宋丽霞,刘红霞,郭卫东,
申请(专利权)人:胜利油田金岛实业有限责任公司胜岛石油机械厂,胜利油田金岛实业有限责任公司,
类型:新型
国别省市:山东,37
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