The invention discloses a variable-magnification lifting hook trolley mounted on a tower crane. The variable-magnification lifting hook trolley comprises a trolley body, a pair of pulleys I mounted on the trolley body and a lifting hook assembly arranged below the trolley body, wherein the lifting hook assembly comprises a lower pulley assembly and an upper pulley assembly; the lower pulley assembly comprises a supporting shell I with a hollow inner cavity, a lower pulley which is connected below the pulleys I in a sliding manner through a steel wire rope, and a lifting hook mounted below the supporting shell I; the upper pulley assembly comprises a supporting shell II and an upper pulley; the lifting hook trolley has a two-magnification working state and a four-magnification working state; when the supporting shell II is mounted in the supporting shell I and the steel wire rope is not in contact with the upper pulley, the lifting hook trolley is at the two-magnification working state; and when the supporting shell II is mounted on the trolley body and the steel wire rope is tensioned on the upper pulley, the lifting hook trolley is at the four-magnification working state. The variable-magnification lifting hook trolley has the advantages of high working efficiency, safety and reliability in operation and convenience and rapidness in a variable-magnification process.
本发明公开了一种安装在塔机上的变倍率吊钩小车,包括小车本体、安装在小车本体上的一对滑轮Ⅰ、设于小车本体下方的吊钩组件,吊钩组件包括下滑轮组件与上滑轮组件,下滑轮组件包括具有中空内腔的支撑壳Ⅰ、通过钢丝绳滑动的连接在滑轮Ⅰ下方的下滑轮、安装在支撑壳Ⅰ下方的吊钩,上滑轮组件包括支撑壳Ⅱ、上滑轮,吊钩小车具有二倍率工作状态与四倍率工作状态,当支撑壳Ⅱ安装在支撑壳Ⅰ内且钢丝绳不与上滑轮相接触时,吊钩小车处于二倍率工作状态;当支撑壳Ⅱ安装在小车本体上,钢丝绳张紧在上滑轮上时,吊钩小车处于四倍率工作状态。该结构工作效率高、操作安全可靠,变倍率过程方便、快捷。
Variable-magnification lifting hook trolley mounted on tower crane
一种安装在塔机上的变倍率吊钩小车
2021-04-30
Patent
Electronic Resource
Chinese
Novel double-trolley and double-lifting-hook tower crane
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