Multiloop combination-switch lever-type mechanical interlocking mechanism

Abstract

The invention discloses a multiloop combination-switch lever-type mechanical interlocking mechanism which comprises an isolation switch spindle, an isolation switch, an interlocking slide block, a first lever rotary type mechanism, a connecting rod, a second lever rotary type mechanism, an interlocking block, a first main-chamber large cover, a second main-chamber large cover, a third main-chamber large cover, an opening mechanism. The isolation switch spindle is fixed on the isolation switch and passes through the interlocking slide block. The interlocking slide block is slidingly connected with the connecting rod. The second lever rotary type mechanism is slidingly connected with the interlocking block. The first lever rotary type mechanism is slidingly connected with the connecting rod. The first main-chamber large cover, the second main-chamber large cover and the third main-chamber large cover are arranged in series. The first main-chamber large cover and the third main-chamber large cover are fixed with the interlocking block. The opening mechanism is connected with the first main-chamber large cover, the second main-chamber large cover and the third main-chamber large cover. In the multiloop combination-switch lever-type mechanical interlocking mechanism of the invention, a lever work principle is adopted. And the mechanism is suitable for being installed and used in multiloop combination-switch equipment.

Description

technical field [0001] The invention relates to the technical field of explosion-proof multi-circuit combined switchgear, in particular to a lever-type mechanical interlocking mechanism of a multi-circuit combined switch. Background technique [0002] Coal mine underground electrical equipment clearly emphasizes that the main chamber cover cannot be opened when the electrical equipment is running underground. To open the main chamber cover, the power supply must be cut off first, and the main chamber cover must not be powered on when it is not closed. At present, in order to ensure safe operation of coal mine underground electrical equipment, one is a bolt fastening mechanism, such as figure 1 As shown, the existing bolt fastening mechanism adopts fastening bolts 13, the main cavity cover 12 is fixed on the switchgear 11 through the fastening bolts 13, the warning sign 14 is attached to the main cavity cover 12, and the isolation switch 15 is installed on the switchgear On...

AI Technical Summary

Problems solved by technology

At present, in order to ensure safe operation of coal mine underground electrical equipment, one is a bolt fastening mechanism, such as figure 1 As shown, the existing bolt fastening mechanism adopts fastening bolts 13, the main cavity cover 12 is fixed on the switchgear 11 through the fastening bolts 13, the warning sign 14 is attached to the main cavity cover 12, and the isolation switch 15 is installed on the switchgear On equipment 11, the bolt fastening mechanism has a simple structure, but it is inconvenient to install and maintain, and it is not safe, so it must be guaranteed by a strict management system

The other is the quick door opening mechanism, most of which adopt lifting and left and right moving mechanisms. Most of the electrical and mechanical interlocks are designed in the form of gears and racks, sliders and springs, etc. The processing and installation of this mechanism are complicated. Once the spring fails, it will The slider will fail. After the slider fails, the main chamber cover will not be opened or the main chamber cover will not be closed when it is opened, and the interlocking function will eventually be lost.

At the same time, it can only be used for switchgear below the two main chamber covers

If the number of circuits is large and more than three large covers for the main cavity are required, this mechanism will be helpless

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