The invention discloses a crane steel wire rope pre-tightening device and a control method thereof.The crane steel wire rope pre-tightening device comprises a gear Z1, a gear Z2, a pre-tightening wheel L1, a pre-tightening wheel L2, a motor M1, a reversing valve V1, a one-way valve V3, an overflow valve V2 and a motor M2, when a steel wire rope needs to be pre-tightened, the motor M1 rotates to drive the gear Z1 to rotate, the gear Z1 drives the gear Z2 to rotate, and meanwhile the steel wire rope enters the pre-tightening wheel L1 and the pre-tightening wheel L2 to be pre-tightened; when the steel wire rope does not need to be pre-tightened, the steel wire rope does not make contact with the pre-tightening wheel L1 and the pre-tightening wheel L2 and freely penetrates through the pre-tightening device. The device has the advantages of convenience in use and light weight; during normal hoisting operation or reverse hoisting operation, the steel wire rope pre-tightening wheel is disengaged in the hoisting and lowering process, and abrasion to the steel wire rope is reduced; the hydraulic motor and the overflow valve are adopted for loading, the service life is long, a clutch is not needed, the structure is simple, and heat dissipation is easy; the steel wire rope and the pre-tightening wheel do not move relatively, and abrasion to the steel wire rope is reduced compared with other devices.
本发明公开了一种起重机钢丝绳预紧装置及其控制方法,包括:齿轮Z1、齿轮Z2、预紧轮L1、预紧轮L2、马达M1、换向阀V1、单向阀V3、溢流阀V2以及马达M2,当钢丝绳需预紧时,马达M1旋转带动齿轮Z1旋转,齿轮Z1带动齿轮Z2旋转,同时钢丝绳进入预紧轮L1、预紧轮L2进行预紧;当钢丝绳不需要预紧时,钢丝绳不与预紧轮L1、预紧轮L2接触,自由穿过预紧装置。优点:使用方便,重量轻;正常吊装作业,或反吊作业吊重下放过程时,钢丝绳预紧轮脱开,减少对钢丝绳磨损;采用液压马达+溢流阀加载,寿命长,不需离合器,结构简单,容易散热;钢丝绳与预紧轮间无相对运动,较其他装置减少对钢丝绳磨损。
Crane steel wire rope pre-tightening device and control method thereof
一种起重机钢丝绳预紧装置及其控制方法
2022-06-17
Patent
Elektronische Ressource
Chinesisch
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