Interlocking device of breaker handcart advancing mechanism
A circuit breaker handcart and propulsion mechanism technology, which is applied to switchgear, pull-out switch cabinets, electrical components, etc., can solve the problems of complex structure and poor reliability of interlocking devices, and achieve simple structure, convenient operation, safety and reliability sex high effect
Active Publication Date: 2011-10-19
JIANGSU DAQO CHANGJIANG ELECTRICAL +3
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Problems solved by technology
Most of the existing interlocking devices are complex in structure and poor in reliability, and it is difficult to meet high requirements for use
Method used
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[0010] As shown in the figure, the interlocking device includes a driving screw 1 whose rear end can be matched with the operating handle, and a sliding plate 2 installed on the panel of the handcart is arranged behind the driving screw, and the sliding plate can be moved along the horizontal guide rail. Moving left and right, there is an operating hole 3 on the slide plate at the same level as the driving screw. When the operating hole moves to face the rear end of the driving screw, the operating handle can be inserted into the operating hole to operate the driving screw; There is also a horizontal guide groove 4 on the slide plate, and a rotatable lock lever 5 is arranged on the inside of the slide plate facing the guide groove, and an operation key 6 can pass through the guide groove and cooperate with the outer end of the lock lever 5 and operate. The lock bar rotates, and the rotation of the lock bar can drive an auxiliary switch 7 connected in the circuit breaker operati...
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The invention relates to a component structure of a breaker handcart advancing mechanism, used for high-voltage transmission and distribution, in particular to an interlocking device of a breaker handcart advancing mechanism. The interlocking device comprises a drive screw rod; a sliding plate which can slide left and right along a horizontal guide rail is arranged behind the drive screw rod; the sliding plate is provided with an operating hole; when the operating hole is moved to the position right facing the rear end, an operating handle can insert into the operating hole to operate the drive screw rod; the sliding plate is also provided with a horizontal guide slot; the position, is provided with a rotatable lock rod is arranged inside sliding plate right facing the guide slot; an operating key can operate the lock rod to rotate, and the rotation of the lock rod can drive an auxiliary switch; the lock rod is provided with a crank; one end of a pin shaft arranged on the edge of the crank is arranged in a vertical slot located on a slider; and the slider is fixedly installed on the sliding plate. The invention has simple structure and convenient operation and can carry out positive locking on the operation of the breaker handcart advancing mechanism, thereby achieving high safety and reliability.
Description
technical field [0001] The invention relates to a component structure of a circuit breaker handcart used for high-voltage power transmission and distribution, in particular to an interlocking device for a propulsion mechanism of a circuit breaker handcart. Background technique [0002] During use, the circuit breaker handcart needs to be pushed into or out of the working position on the switch cabinet through the propulsion mechanism. Usually, its movement in and out is realized by turning a driving screw through the operating handle. During the operation of the switchgear, when the circuit breaker is in the closed state, it is not allowed to operate the propulsion mechanism of the handcart to withdraw the handcart, and when the propulsion mechanism of the handcart is in the operable state, the circuit breaker is not allowed to perform closing operation , so an interlock mechanism is needed to control this process. Most of the existing interlocking devices are complex in st...
Claims
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IPC IPC(8): H02B11/133H02B11/167
Inventor 许跃宏黄晓宁王燕刘欣欣
Owner JIANGSU DAQO CHANGJIANG ELECTRICAL