The invention provides a high current isolation switch with high reliability, including contact, contact base, contact knife assembly, spindle and rod assembly, contact seat is provided with a bearing seat, the bearing seat is provided with a supporting hole, and one end of the main shaft drawbar assembly and the other end is connected with the contact knife assembly is connected with the rear knife contact assembly by supporting bolts through the bearing hole of the contact knife assembly to support the bolt as the center of rotation is arranged in the bearing seat, and realize the opening and closing by rotation of the assembly between the contact knife, the knife assembly and the front contact contact, contact surface contact and touch knife assembly in front of the arched structure. The bearing seat is provided with a stop bolt, check head bolts through the bearing supporting bolt is fixed on the supporting hole, a contact knife assembly through the support bolt hole is arranged in the bushing, bushing coated between the supporting bolt and bolt supporting external bushing and transition fit, a return spring is arranged between the bearing seat and the two side contact the knife, compact structure, convenient installation, reliable performance.
【技术实现步骤摘要】
一种高可靠性的大电流隔离开关
本专利技术属于一种隔离开关,具体涉及一种高可靠性的大电流隔离开关。
技术介绍
现在的大电流隔离开关以闸刀式居多。如图(1)和图(2)。电流从触头流向触刀组件最后流向触座。由于电流较大,铜排较厚,易导致与铜排搭接时形成强制连接致触头偏斜。而触头偏斜一点点,会导致触头与触刀接触不好,会导致开关发热甚至烧毁。开关分闸、合闸是通过操作机构推动主轴旋转带动拉杆组件旋转,最终推动触刀组件旋转来实现分闸、合闸。而拉杆组件最前端的滑块与拉杆绝缘子前端铆接螺纹头是直接通过螺纹连接。拉杆绝缘子前端铆接螺纹头螺纹与滑块内螺纹之间肯定存在间隙。在多次分闸、合闸过程中螺纹会受到损伤甚至滑牙。触刀组件两把触刀后部与触座相连,是利用穿过的螺栓通过轴承座孔形成支承点。同时,在轴承座两侧有压缩弹簧将触刀组件在非锁紧状态向两外侧推开。触刀组件前部也是在穿过螺栓的中间设计了一只合闸时的定位套。在套两侧也有压缩弹簧,触刀在非锁紧状态下也被弹簧推开。触刀在分闸位置到合闸位置都是被弹簧推开的。即触刀组件与触座(头)之间有间隙。同时,轴承座与穿过其中的螺栓之间有间隙。这样,触刀组 ...
【技术保护点】
一种高可靠性的大电流隔离开关,其特征为,包括触头、触座、触刀组件、主轴和拉杆组件,触座上设有轴承座,轴承座上设有支承孔,触头和触座相对设置,主轴位于触头和触座之间,拉杆组件一端与主轴相连接、另一端与触刀组件相连接,触刀组件后部通过支承螺栓穿过支承孔设置在轴承座上、使触刀组件以支承螺栓为中心进行转动,通过触刀组件的转动、触刀组件前部与触头之间实现开合,触头与触刀组件前部的接触面成圆弧形结构。
【技术特征摘要】
1.一种高可靠性的大电流隔离开关,其特征为,包括触头、触座、触刀组件、主轴和拉杆组件,触座上设有轴承座,轴承座上设有支承孔,触头和触座相对设置,主轴位于触头和触座之间,拉杆组件一端与主轴相连接、另一端与触刀组件相连接,触刀组件后部通过支承螺栓穿过支承孔设置在轴承座上、使触刀组件以支承螺栓为中心进行转动,通过触刀组件的转动、触刀组件前部与触头之间实现开合,触头与触刀组件前部的接触面成圆弧形结构。2.如权利要求1所述的一种高可靠性的大电流隔离开关,其特征为,所述轴承座上设有止头螺栓,止头螺栓穿过轴承座将支承螺栓锁紧固定在支承孔中,触刀组件上穿过螺栓的支持孔内设有衬套,衬套包覆在支承螺栓外部、且衬套与支承...
【专利技术属性】
技术研发人员:丁声飞,成方元,
申请(专利权)人:镇江市丹高电器有限公司,
类型:发明
国别省市:江苏,32
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