当前位置: 首页 > 新闻资讯 > 公司新闻 > 正文

钢筋连接套筒紧固件的四种防松方式!

添加时间:2019-12-03      发布人:http://www.jzqgc.com

  种是摩擦防松。这是应用更广的一种防松方式,这种方式在螺纹副之间产生一不随外力变化的正压力,以产生一可以阻止螺纹副相对转动的摩擦力。这种正压力可通过轴向或同时两向压紧螺纹副来实现。如采用弹性垫圈、钢筋连接套筒、自锁螺母和尼龙嵌件锁紧螺母等。这种防松方式对于螺母的拆卸比较方便,但在冲击、振动和变载荷的情况,开始螺栓会因松弛导致预紧力下降,随着振动次数的增加,损失的预紧力缓慢地增多,更终将会导致螺母松脱、螺纹联接失效。
  The first is friction and anti loosening. This is the most widely used anti loosening method, which produces a positive pressure between the thread pairs that does not change with the external force to produce a friction force that can prevent the relative rotation of the thread pairs. The positive pressure can be achieved by pressing the thread pair axially or simultaneously. For example, elastic washer, steel connecting sleeve, self-locking nut and nylon insert lock nut are used. This anti loosening method is convenient for nut disassembly, but in the case of impact, vibration and variable load, the pre tightening force of the bolt will decrease at the beginning due to relaxation. With the increase of vibration times, the lost pre tightening force will slowly increase, which will eventually lead to nut loosening and thread coupling failure.
  第二种方式是机械防松。是用止动件直接限制螺纹副的相对转动。如采用开口销、串连钢丝和止动垫圈等。由于止动件没有预紧力,螺母松退到止动位置时防松止动件才能起作用,因此,这种方式实际上不防松而是防止脱落。
  The second is mechanical locking. It is to directly limit the relative rotation of the thread pair with the stopper. Such as the use of cotter pin, steel wire and stop washer. Since the stop has no pre tightening force, the stop can only work when the nut is loosened and retreated to the stop position. Therefore, this method does not prevent loosening but falling off.
济南钢筋批发
  第三种方式是铆冲防松。在拧紧后采用冲点、焊接、粘接等方法,使螺纹副失去运动副特性而连接成为不可拆连接。这种方式的缺点是栓杆只能使用一次,且拆卸十分困难,必须破坏螺栓副方可拆卸。
  The third way is riveting and punching. After tightening, punching, welding, bonding and other methods are used to make the thread pair lose the characteristics of the moving pair and become a non detachable connection. The disadvantage of this method is that the bolt rod can only be used once, and it is very difficult to disassemble, so the bolt pair must be destroyed before disassembly.
  第四种方式是结构防松。是利用螺纹副自身结构,即唐氏螺纹防松方式。
  The fourth way is to prevent the structure from loosing. It uses the thread pair's own structure, i.e. down thread locking mode.
上一条: 钢筋网片有这什么样的计算原则?
下一条: 最后一页
咨询热线: 13605413762