The frame of mast derrick that is designed for hydraulic wheel tractor hoist adopt welding of armor plate,its section is oblong armor plate,and its material is HG60.Stability,static loads and fatigue life on a derrick are calculated in designing.
英
美
- 為滿(mǎn)足液壓輪式通井機的使用要求而設計的桅桿式井架采用板焊結構,主體截面為長(cháng)方形的方形鋼,材料為HG60。 對井架進(jìn)行了穩定性、靜強度和疲勞強度設計計算。
