An interlock operating mechanism of a low-voltage withdrawable switchgear

Abstract

An interlock operating mechanism for a low-voltage withdrawable switch cabinet. It is characterized in that: the operating handle includes a handle part and an installation part, the installation part is installed with an interlocking component; the installation part is provided with an operation through hole corresponding to the operation shaft; the interlocking component is movably arranged on the installation part, and the interlocking component has a shielding The through hole is operated and the interlocking mechanism is kept in the locked position in the locked state, and the unlocked position in which the operating through hole is exposed and the action of pushing the interlocking action plate keeps the interlocking mechanism in the unlocked state. When the drawer is pulled out, the interlock assembly can be used to unlock and disconnect the electrical connection, and at the same time, the operation through hole is opened, and then the push-pull action of the drawer can be realized by inserting the crank handle into the operation through hole. The advantages are: not only reliable performance, convenient operation, no misoperation, but also a reasonable time-delay and reliable process when the drawer is opened and pulled out 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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