旋挖钻机是一种取土成孔灌注桩施工机械。在主卷扬浮动工作状态时,依靠动力头驱动钻杆并带动钻斗回转切屑土壤,然后操纵主卷扬将钻杆、钻斗提升至孔外卸土,如此周期性循环作业。由此可见,旋挖钻机主卷扬是一个特别重要的部件。本文主要探讨主卷扬卷筒排绳布局问题。1.主卷扬卷筒分类及特点(1)绳槽类型目前旋挖钻机所用主卷扬卷筒,根据绳槽类型可分为螺旋卷简和折线卷筒。螺旋卷筒绳槽呈螺旋状,如图1a所示。其绳槽结构特点如下:绳槽直径 Rotary Drilling Rig is a kind of earth-boring and grouting pile construction machinery. When the main winch is in floating working state, the drill head is driven by the power head to drive the drilling bucket to rotate the swarf soil, and then the main winch is used to lift the drill pipe and the drilling bucket to the outside of the hole for removing dust so as to be cyclically circulated. Thus, rotary drilling rig main winch is a particularly important component. This paper mainly discusses the main winch reel row layout problem. 1. Main winch drum classification and features (1) rope groove type At present, the main winch used rotary drilling rig, according to the type of rope groove can be divided into spiral coil and folding line reel. Spiral drum rope groove spiral, as shown in Figure 1a. Its rope groove structure is as follows: rope groove diameter