Interlocking operation mechanism of low-voltage draw-out type switch cabinet

Abstract

The invention discloses an interlocking operation mechanism of a low-voltage draw-out type switch cabinet. The interlocking operation mechanism is characterized in that an operating handle comprises ahandle part and a mounting part, and the mounting part is provided with an interlocking assembly; the mounting part is provided with an operation through hole corresponding to the operation shaft; the interlocking assembly is movably arranged on the mounting part, and is provided with a locking position for shielding the operation through hole and keeping the interlocking mechanism in a locking state, and an unlocking position for exposing the operation through hole and pushing the interlocking action plate to act to keep the interlocking mechanism in an unlocking state. When the drawer is pulled out, unlocking can be carried out through the interlocking assembly, electrical connection is disconnected, the operation through hole is opened at the same time, then the crank is inserted intothe operation through hole, and the push-pull action of the drawer can be achieved. The mechanism has the advantages that the mechanism is reliable in performance and convenient to operate, misoperation is avoided, and a reasonable time-delay separation reliable process is achieved when the drawer is pulled out in a switching-off mode under the condition of electrical connection.

Description

technical field [0001] The invention relates to a low-voltage withdrawable switch cabinet, in particular to an interlock operating mechanism of the low-voltage withdrawable switch cabinet. Background technique [0002] With the rapid development trend in the field of electrical intelligence, the application of the core technology propulsion mechanism (electric operation mechanism) of low-voltage withdrawable switchgear has become what everyone expects. The traditional high-current circuit breaker switch has too much operating force and has reached the point of using buttons. In the update and replacement stage of labor-saving operation, the electric operating mechanism will be widely used. Based on the current technology of the propulsion mechanism (electric operating mechanism) of the low-voltage withdrawable switchgear on the market, it is still not mature enough. [0003] There are three types of electric operating mechanisms popularly used in the market. The first is the...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development trend in the field of electrical intelligence, the application of the core technology propulsion mechanism (electric operation mechanism) of low-voltage withdrawable switchgear has become what everyone expects. The traditional high-current circuit breaker switch has too much operating force and has reached the point of using buttons. In the update and replacement stage of labor-saving operation, the electric operating mechanism will be widely used. Based on the technology of the propulsion mechanism (electric operating mechanism) of the low-voltage withdrawable switchgear on the market, it is still not perfect and mature.

[0003] There are three types of electric operating mechanisms popularly used in the market. The first is the hand-pull mechanism that is directly pushed and pulled out. This is the most undesirable type. First of all, it does not have a delay function. Electrical facilities are prone to sparks due to residual current, and contacts such as plug-ins are used. After a long time, it will cause poor contact. Secondly, push the plug-in on the rear wall of the drawer violently, and when it needs to be pushed to the test position, it will often be pushed directly to the connection position and fail to stay at the test position accurately.

[0004] The second is to set a concave-convex driving point on the turbine of the mechanism to move the travel switch. The disadvantage is that it does not have a reasonable delay and reliable function. At the same time, it is easy to shake directly to the connection position without stopping at the test position. It is also a mechanism that does not have reliable performance.

[0005] The last type is a split-combined electric operation mechanism, one side is equipped with an interlocking device, and the other side is equipped with a propulsion mechanism. If the hand pressing the button becomes loose, the other hand shaking the mechanism will easily damage the interlocking device or mechanism parts, and the drawer will often be stuck and unable to enter and exit.

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