Safety interlocking device and safety interlocking system
A technology of safety interlocking device and keyhole, which is applied to building locks, devices that prevent keys from being removed from locks, keys, etc. question
Active Publication Date: 2020-08-11
SANY MARINE HEAVY IND
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Problems solved by technology
[0003] The above independent self-locking method has the following disadvantages: when the high-voltage switchgear is in the state of closed power supply, since there is no interlock protection device installed between the high-voltage switchgear and the transformer, if the staff opens the transformer cabinet door with a key to check and During maintenance, since there may be high voltage in the intermediate circuit of the transformer, the staff may operate with power on, which brings potential safety hazards to the staff
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[0034] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0035] Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art w...
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The invention provides a safety interlocking device and a safety interlocking system. The safety interlocking device is installed on a lock box corresponding to a high-voltage cabinet; the high-voltage cabinet comprises a switch module and is connected with at least one high-voltage load through a control circuit; and a key corresponding to the high-voltage cabinet is a unique key for turning on the at least one high-voltage load. The safety interlocking device comprises a communication assembly, a lock hole unit and a locking assembly, wherein the communication assembly and the locking assembly are respectively connected with the control circuit; when the key is positioned in the lock hole unit, the communication assembly is used for connecting the control circuit; when the control circuit is connected and the switch module is in a closed state, the locking assembly is used for locking the key; and when the lock hole unit is empty, the communication assembly is used for disconnectingthe control circuit, and the locking assembly is used for unlocking the key. Compared with the prior art, the safety interlocking device and the safety interlocking system can realize the interlockingprotection between the high-voltage switch cabinet and the high-voltage load, and the safety of workers is guaranteed when the workers need to repair and check the high-voltage load.
Description
technical field [0001] The present application relates to the field of electric power technology, in particular, to a safety interlock device and a safety interlock system. Background technique [0002] Shore container cranes (referred to as quay cranes or suspension bridges) are professional equipment specially used for loading and unloading container ships at container terminals. They are generally installed on the shore of port terminals. The high-voltage equipment on the quayside crane equipment includes at least high-voltage switchgear and transformers. The high-voltage switchgear can provide power for the transformer when it is closed. The high-voltage switchgear and the transformer have their own locks for the door or the cover. The door lock can only be opened with a special key, so that the staff can check and check the high-voltage equipment. maintenance, and can prevent non-staff from opening the cabinet door. [0003] The above independent self-locking method ha...
Claims
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Login to View More IPC IPC(8): E05B11/00E05B19/00E05B63/14E05B65/52
CPCE05B11/00E05B19/0005E05B63/143E05B65/00
Inventor 赵立张卫
Owner SANY MARINE HEAVY IND