The utility model provides a tension detector, which belongs to the field of tension detection, including a shell, the inner cavity of the shell is provided with a pull rod, the pull rod is provided with a pull wire through the two ends of the shell and is connected with a protective wire, one end of the pull rod is provided with a spring between the shell, and the pull rod compresses the spring under the pull force of the pull wire. It is maintained in the working position. The inner wall of the outer shell is provided with a constant-closing switch. The constant-closing switch is connected with the alarm. The inductive contact of the constant-closing switch is arranged on the pull rod. When the pull rod is in the working position, the constant-closing switch is connected. When the pull rod is out of the working position, the normal-closing switch is disconnected and the alarm alarm is alarmed. The tension detector provided by the utility model sets the normally closed switch on the inner wall of the shell, and from the view of the external structure, it is a regular rectangular structure and is easy to install. There is no abnormal sound when the tension is stressed, and the tension is transferred smoothly without affecting the result of pulling force.
【技术实现步骤摘要】
拉力探测器
本技术属于拉力探测
,更具体地说,是涉及一种拉力探测器。
技术介绍
隐形防护窗较传统焊接式钢网结构的防护窗,在避险逃逸,建筑外观保护及制造成本等方面,性能均得到显著提高。隐形防护窗的原理多为断线报警方式,其报警器件采用断线报警器,只有当侵犯者将防护网剪断时才可实现报警,存在防护性能单一的缺点。针对这一缺点,研究出拉力探测器,包括外壳,外壳内腔设置可沿其纵向滑动的拉杆及可迫使拉杆向左移动的弹簧,拉杆右端连接触发拉线;外壳的外壁固定一行程开关,行程开关的触头贯穿外壳壁与拉杆外壁压合,拉杆外壁设置可使行程开关的触头产生位移从而接通或断开行程开关的凸台和凹槽。然而这种拉力探测器,行程开关设置在外壳外壁,使得规则的长方形外壳的外侧突出一块,安装不便;另外,在拉线受力时,行程开关的触头和外壁产生碰撞,发出异响,同时也使得拉力的传递不顺畅,影响拉力探测结果。
技术实现思路
本技术的目的在于提供一种拉力探测器,以解决现有技术中存在的行程开关设置在外壳外壁导致的安装不便,拉线受力时异响已经拉力传递不顺畅等技术问题。为实现上述目的,本技术采用的技术方案是:提供一种拉力探测器,包括:外壳,所述外壳的内腔设置有拉杆,所述拉杆上设置有贯穿所述拉杆的拉线,所述拉线穿过所述外壳两端与防护线相连,所述拉杆的一端与所述外壳之间设置有弹簧,所述拉杆在所述拉线的拉力下压缩弹簧,维持在工作位,所述外壳的内壁上设置有常闭开关,所述常闭开关与报警器连通,所述拉杆上设置有所述常闭开关的感应触点,当所述拉杆位于工作位时,所述常闭开关连通;当所述拉杆脱离工作位,所述常闭开关断开,所述报警器报警。 ...
【技术保护点】
1.拉力探测器,其特征在于:包括外壳,所述外壳的内腔设置有拉杆,所述拉杆上设置有贯穿所述拉杆的拉线,所述拉线穿过所述外壳两端与防护线相连,所述拉杆的一端与所述外壳之间设置有弹簧,所述拉杆在所述拉线的拉力下压缩弹簧,维持在工作位,所述外壳的内壁上设置有常闭开关,所述常闭开关与报警器连通,所述拉杆上设置有所述常闭开关的感应触点,当所述拉杆位于工作位时,所述常闭开关连通;当所述拉杆脱离工作位,所述常闭开关断开,所述报警器报警。
【技术特征摘要】
1.拉力探测器,其特征在于:包括外壳,所述外壳的内腔设置有拉杆,所述拉杆上设置有贯穿所述拉杆的拉线,所述拉线穿过所述外壳两端与防护线相连,所述拉杆的一端与所述外壳之间设置有弹簧,所述拉杆在所述拉线的拉力下压缩弹簧,维持在工作位,所述外壳的内壁上设置有常闭开关,所述常闭开关与报警器连通,所述拉杆上设置有所述常闭开关的感应触点,当所述拉杆位于工作位时,所述常闭开关连通;当所述拉杆脱离工作位,所述常闭开关断开,所述报警器报警。2.如权利要求1所述的拉力探测器,其特征在于:所述常闭开关为传感器,所述感应触点为所述传感器的信号接收端,所述拉杆位于工作位时,所述传感器所在回路导通。3.如权利要求2所述的拉力探测器,其特征在于:所述常闭开关...
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