The invention discloses a method for preventing misoperation of lifting equipment. The lifting equipment in the prior art has high probability of misoperation during operation, such as continuous operation when the lifting equipment descends over the limit. The method comprises the following steps: adding a normally closed node of a blocking relay in a descending loop when the loop is a descending blocking loop; when the large lifting arm descends to the descending limit, the descending limit action normally-closed node is disconnected, the descending loop is powered off, meanwhile, the descending limit normally-open node is closed, the descending locking loop is powered on, and the locking relay acts; a normally closed node of a blocking relay in the descending loop is changed into a normally open node, the big arm descending loop is blocked, the big arm cannot continue to descend no matter what operation mode is adopted or the situation that the big arm is over-limited occurs, only after the big arm ascends, the big arm can restore to the original operation mode, and the possibility of misoperation is avoided. The device is used for preventing misoperation of the lifting equipment.
一种防止升降设备误操作方法。现有技术的升降设备操作时有很大几率会发生误操作,如下降过限位继续操作等问题。本发明包括如下步骤:当为下降闭锁回路时,在下降回路中加入闭锁继电器的常闭节点;当升降大臂下降至下降限位时,下降限位动作常闭节点断开,下降回路失电,同时下降限位常开节点闭合,下降闭锁回路得电,闭锁继电器动作;下降回路中的闭锁继电器常闭节点变为常开节点,闭锁大臂下降回路,无论何种操作方式以及大臂过限位等情况的发生都不能将大臂继续进行下降的操作,只有进行大臂上升操作后,方可使大臂恢复原有运行方式,避免了误操作的可能。本发明用于防止升降设备误操作。
Method for preventing misoperation of lifting equipment
一种防止升降设备误操作方法
2022-07-05
Patent
Electronic Resource
Chinese
IPC: | H01H Elektrische Schalter , ELECTRIC SWITCHES / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last |
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