一种用于晶闸管的压装机构

Abstract

本实用新型属于电力电子设备技术领域，尤其涉及一种用于晶闸管的压装机构，包括顶杆、预紧螺杆、挡环、碟形弹簧、销柱、压板，预紧螺杆中间连接有挡环，预紧螺杆上部带有限位凸起，预紧螺杆的限位凸起与挡环之间套接有若干碟形弹簧；预紧螺杆为中空结构，顶杆置于中空结构内，预紧螺杆及顶杆中部设有尺寸相同的长圆通孔，销柱插入预紧螺杆和顶杆中部的长圆通孔中；挡环下沿抵靠在销柱上；预紧螺杆外部设有螺纹，预紧螺杆与压板螺纹连接。优点是：采用预先压装碟形弹簧，使碟形弹簧压缩到设定尺寸，保证硅串紧固力。大平垫圈的设置可以避免上下两侧碟形弹簧由于安装间隙导致不同心产生的碟形弹簧安装缺陷。

Claims

1. A press mechanism for a thyristor, characterized by, The device includes a push rod, a preload screw, a retaining ring, disc springs, a pin, and a pressure plate. The preload screw has a retaining ring connected in the middle, and a limit protrusion on its upper part. Several disc springs are sleeved between the limit protrusion and the retaining ring. The preload screw has a hollow structure, and the push rod is placed inside the hollow structure. The preload screw and the push rod have elongated through holes of the same size in the middle. The pin is inserted into the elongated through holes in the middle of the preload screw and the push rod. The lower edge of the retaining ring abuts against the pin. The preload screw has threads on its exterior and is threaded to the pressure plate.

2. A press-pack mechanism for a thyristor according to claim 1, characterized in that Large flat washers are provided between the disc springs.

3. A press-pack mechanism for a thyristor according to claim 1, characterized in that The bottom of the top rod has a spherical protrusion structure.

4. A press-pack mechanism for a thyristor according to claim 1, characterized in that The top rod is slidably connected to the pre-tightening screw.

5. The pressing mechanism for a thyristor according to claim 1, characterized in that, The bottom end of the top rod is located below the pressure plate.

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