Handcart switch cabinet locking device

Abstract

The invention relates to the field of switch cabinets, and particularly relates to a handcart switch cabinet locking device. The handcart switch cabinet locking device comprises reversing rings, linkage rods, substrates and guide rods; each of the guide rods passes through each of the reversing rings; an inner screw thread is arranged on each of the reversing rings; a screw thread section is disposed on each of the guide rods; each of the reversing rings is rotatably disposed on each of the substrates; a connection column is disposed on each of the reversing rings; a reversing groove is formedon each of the substrates; each of the connection columns passes through each of the reversing grooves; the connection columns are hinged to the linkage rods; a plurality of locking mechanisms are arranged on each of the linkage rods; each of the locking mechanisms includes a pedestal, a main turntable rotatably disposed on the pedestal and a transmission turntable; the transmission turntables are hinged to the linkage rods; each of the transmission turntables is meshed with each of the main turntable via transmission teeth; a static contact hole and a hole cover are arranged on a middle portion of each of the pedestals; each of the hole covers consists of a plurality of movable plates hinged to each of the pedestals; a tension bar is disposed on each of the movable rods; and two ends ofeach of the tension bars are respectively hinged to each of the movable plates and each of the main turntable. According to the handcart switch cabinet locking device provided by the invention, the structure is compact, the operation is convenient, and a handcart can be effectively prevented from being blocked in traveling and returning processes.

Description

technical field [0001] The invention relates to the field of switch cabinets, in particular to a locking device for a handcart switch cabinet. Background technique [0002] In the handcart switch cabinet, the handcart is the main part of the withdrawable switch cabinet. After laying the guide rail, it can be pulled out from the switch cabinet by hand. During maintenance, only the handcart needs to be pulled out, which can shorten the scope of maintenance power failure. The static contact is located in the switch cabinet, and is generally closed by a locking device to prevent maintenance personnel from accidentally touching the static contact and causing power safety problems. The moving contact is located on the handcart, and the locking device is used when the handcart pushes the switch cabinet. Gradually open to combine the moving contact with the static contact. At present, the locking devices on the handcart switch cabinet are mostly realized by the opening and closing o...

AI Technical Summary

Problems solved by technology

The static contact is located in the switch cabinet, and is generally closed by a locking device to prevent maintenance personnel from accidentally touching the static contact and causing power safety problems. The moving contact is located on the handcart, and the locking device is used when the handcart pushes the switch cabinet. Gradually open to combine the moving contact with the static contact. At present, the locking devices on the handcart switch cabinet are mostly realized by the opening and closing of mechanical linkage baffles. This kind of locking device has high resistance, which often causes the handcart to be stuck in the process of retreat , a dilemma, the solution is to expand the scope of power outages and stop the bus for maintenance, causing a lot of trouble

[0003] China Patent Authorization Announcement No. CN 206432611 U, the date of the authorized announcement is 2017.08.22, the name is "a double-swing type handcart switch cabinet", which discloses a swing-in locking device, which meets the requirements of the double-line cabinet body, but This swing-in locking device still does not solve the problem that the handcart is easy to get stuck in the process of retreating

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