After the transformation of the main engine is completed, the last and most important problem remains, that is the selection of spreader. Due to the different working conditions, there is a great difference between the gantry crane crane and the common quay bridge crane and field bridge crane. There are two main forms of rotary spreader suitable for multi-purpose door crane, which are: integral type and split type respectively.
(1) Split type rotary spreader is suitable for container and pieces of groceries need frequent switching conditions. The advantage is that the sling and hook of the door seat machine is simple and convenient to switch. But there are also obvious shortcomings, that is, the anti-rolling effect of the spreader is poor. In the operation of the sling is large, the driver needs to have a higher level of operation.
(2)The integrated rotary spinner is suitable for the working conditions of container with many working conditions and occasionally lifting groceries. Advantages are good anti-rolling effect of spreader, easy to control. However, in the actual use process, if it is more troublesome to replace the hook working condition, it is necessary to remove the shackle and collect the cable of the hanger.
In the process of selecting the spreader of the door seat machine reconstruction project, in addition to considering the working condition of the door seat machine after reconstruction, there is also a very important point to consider and pay attention to, that is the dead weight of the spreader.
At present, the rated lifting weight under the hook of the new type of multi-purpose door seat machine is generally 45 tons or 50 tons. For this type of door seat machine transformation, split type rotating spreader can be preferred. Split type rotary sling weight is about 12.5 tons (including rotating hook), if MQ4535 type door machine replacement split type automatic spreader, beneath the spreader rated lifting weight of about 34-35 tons (modified under the spreader rated lifting weight as the original door machine under the hook of the rated lifting weight minus the weight of spreader, plus demolition of e type hook weight). It can basically meet the requirements of operating conditions.
The biggest difference between the lightweight integrated rotary spammer and the standard integrated rotary spammer is that the main structure of the spammer has been changed from the original double box girder structure to the single box girder structure, and the dead weight has been reduced from the original 11.5 tons to 9.5 tons.
Post time: Jul-16-2021
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