Electric switching-on device flexibly connected with residual-current circuit breaker

A leakage circuit breaker and electric closing technology, applied in the protection switch operation/release mechanism, etc., can solve the problems of low efficiency, poor equipment operation stability, unstable transmission, etc., to reduce manufacturing costs, high operation stability, and operation The effect of high reliability

Inactive Publication Date: 2013-12-11
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of this device are: first, when the eccentric turntable rotates around the motor shaft, it will generate a large moment of inertia, causing serious vibration of the equipment, and the operation stability of the equipment is extremely poor; second, it must be switched between manual and automatic closing. If the clutch is switched, if the steps are not followed, the reduction gear of the motor will be damaged, resulting in the failure of the entire closing device
But this device also has the following disadvantages: First, the meshing or separation of the gear and the rack requires precise installation and compact structure. Excessive installation errors will lead to large wear, low efficiency and unstable transmission during the meshing or separating process of the gear and the rack. Even when subjected to impact loads, the gear teeth or the rack may break; the second is that when switching between manual and automatic switching, additional operation steps are required to perform clutch switching. If you forget to switch, it will cause damage to the motor reduction gear device, resulting in the entire Closing device failure

Method used

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  • Electric switching-on device flexibly connected with residual-current circuit breaker
  • Electric switching-on device flexibly connected with residual-current circuit breaker
  • Electric switching-on device flexibly connected with residual-current circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: Take the electric closing device of a smartly connected leakage circuit breaker proposed by the present invention in the state of manual opening and closing as an example:

[0016] combine figure 1 , figure 2 and image 3 , when opening and closing manually, the handle connecting rod (1) and the handle (14) are flexibly connected, that is, the connection between the handle connecting rod (1) and the handle (14) is provided with a long hole, and the handle (14) The fixing piece connecting the handle connecting rod (1) and the handle (14) will slide in the elongated hole to ensure that the handle connecting rod (1) does the same movement as the handle (14); in order to reduce the friction of the connecting piece , to prolong the service life of the present invention, the spring (3) is arranged between the handle link (1) and the sliding link (2), when the handle link (1) makes the same movement as the handle (14), the sliding link The rod (2) moves in th...

Embodiment 2

[0017] Embodiment 2: Take an example of an electric closing device smartly connected to a leakage circuit breaker in the state of automatic opening and closing as proposed by the present invention:

[0018] combine figure 1 , figure 2 and image 3 , the automatic opening and closing uses the rotation of the eccentric output motor (7) to drive the rotation of the disc-shaped round table (8) to reduce the moment of inertia of the load; the oil-sealed bearing (4) set on the disc-shaped round table to push the sliding connecting rod ( 2) The side lug (15) on the top, the side lug (15) of the sliding link (2) slides and moves in the fixed guide rail on the mounting base (11), thereby completing pushing and pulling the handle (14) of the leakage circuit breaker to open the brake In order to ensure the precise positioning of the closing mechanism and prevent the opening and closing operations from being in place, the stroke is controlled by the limit switch (10). The limit switch ...

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PUM

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Abstract

The invention relates to an electric switching-on device flexibly connected with a residual-current circuit breaker. The electric switching-on device flexibly connected with the residual-current circuit breaker comprises a handle connecting rod, an installation base and a handle. The electric switching-on device flexibly connected with the residual-current circuit breaker is characterized in that the electric switching-on device flexibly connected with the residual-current circuit breaker further comprises a sliding connecting rod, a spring, an oil seal bearing, a fixing pin, a fixing ring, an eccentric output motor, a disc type circular truncated cone, a dowel, a limit switch, guide rails, screws and lateral lugs, the handle connecting rod is in flexible connection with the handle and is fixedly connected with the sliding connecting rod, the lateral lugs are arranged on the sliding connecting rod in an obliquely symmetrical mode, the spring is arranged between the handle connecting rod and the sliding connecting rod, the oil seal bearing is fixedly connected with the disc type circular truncated cone through the fixing pin, the fixing ring is fixedly connected with an output shaft of the eccentric output motor, the eccentric output motor is fixedly connected with the installation base through the screws, the dowel is in threaded connection with a boss of the disc type circular truncated cone, the included angle between the arranging direction of the dowel and the oil seal bearing is 90 degrees, the limit switch is fixedly connected with the installation base, and the two ends of each guide rail penetrate through the sliding connecting rod to be fixedly connected inside the installation base. The electric switching-on device flexibly connected with the residual-current circuit breaker has the advantages of being high in switching-on and switching-off efficiency, high in reliability and high in stability during manual or automatic switching-off and switching-on.

Description

technical field [0001] The invention belongs to the technical field of electric switches, in particular to an electric closing device for smartly connecting leakage circuit breakers. Background technique [0002] Leakage circuit breaker is a kind of electrical protection switch that can automatically disconnect the circuit when the leakage current reaches or exceeds the specified value under the set conditions, and is used to prevent personal injury and equipment damage caused by electric shock, leakage or electrical failure. and accidents such as disasters. The traditional leakage circuit breaker can complete the function of automatic opening when the leakage current or load current exceeds the rated value, and manual operation is required to achieve opening or closing at other times. In order to meet the needs of the development of modern electrical appliances in the direction of intelligence and automation, leakage circuit breakers with electric and manual closing functi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/70
Inventor 崔业兵袁伟陈雄鞠玉涛郑健王政时
Owner NANJING UNIV OF SCI & TECH
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