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Cutter suction dredger repair and maintenance cycle

Cutter suction dredger repair and maintenance cycle

 The pre-repair of the scheme can not only prevent the problem from happening, but also save the repair time, and is conducive to the improvement of the utilization rate and economic efficiency of the dredger. However, its superiority is closely related to the selection of its repair practices. The more traditional selection criteria are based on the useful operating time of the dredger machinery. When the dredger machinery reaches the rule's operational deadline, it will Prevent repairs. Therefore, determining the repair cycle becomes the primary issue.
     1. Variety of repair operations
  According to the operating life of dredger equipment, the amount of corrections, and the duration of construction, traditional repairs are classified into three categories: minor repairs, intermediate repairs, and overhauls.
     (1) minor repairs
  The dredging equipment machinery and equipment minor repair is the initial stage of the transition from protection to repair, based on the shortcomings of the equipment found during the routine inspections and inspections, and a minor repair plan for the problems that cannot be handled during the handover. The repair project includes defects that can be corrected at the time of minor repairs, replacement of parts, grease, adjustment of gaps, etc. In addition, some more complicated viewing items should also be included. Minor repairs are frequent. Every month's minor repair time can be flexibly used, not to go beyond the original minor repair plan, for example, the original scheduled for minor repairs three times a month, the total repair time 32h, such as within a month of organization each time 8h minor repairs twice, 16h The minor repair time, although the total repair time does not exceed 32h, but in the 16h that minor repairs can handle some difficult, time-consuming repair projects, which is an advantageous organization. Because the short-term plan for the minor repairs is short, minor repairs are just a way to protect simple production. The expenses for minor repairs are expensed from production expenses and are included in the production cost of the current month.
      (2) repair
  Because the dredge ship's mechanical equipment has a short repair time and some of the shortcomings and dangers of dredger equipment that are required for a long time are not treated in the minor repair time, it cannot be dealt with during the next major repair. It is necessary to organize one or several revisions between two major repairs. The large-scale repairs and the large number of projects are generally restored.
      (3) Major repairs
  Dredger equipment is used for a long time. Some critical parts (such as the root of the primary equipment, crane trajectory, main motor, blast furnace shell, etc.) are damaged and cannot be corrected in a short time. It is necessary to organize a long time. Discontinue production at the time of repair. This type of repair is called overhaul. Based on the practical experience of production and relevant statistical data, it is possible to estimate the period of overhaul of certain primary production equipment under normal conditions. The length of the overhaul cycle depends on the unevenness of the quality of maintenance work for dredging equipment protection. The key issues are: First, compliance with the use of regulations, shall not overload the use of equipment; Second, ensure the quality of overhaul construction.


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