The hydraulic engineering winch is mainly composed of a base, a driving motor, a speed reduction disc, a gearbox, a rotating shaft, side plates, a winding drum, a fixing block, an electromagnetic speed reduction mechanism, a speed reduction chuck and the like, spiral grooves are formed in the side faces of the sides, close to the winding drum, of the side plates correspondingly, and elastic pressing strips are slidably connected into the spiral grooves; a cavity is formed in the elastic pressing strip, and magnetic fluid accounting for half of the volume of the cavity is contained in the cavity. When the winch is started again after being braked, due to the fact that an electromagnet on the electromagnetic speed reducing mechanism loses magnetism, a magnetic wedge block slides down along a sliding rod under the action of the gravity of the magnetic wedge block, and due to the fact that the magnetic wedge block applies pressure to a triangular clamping block while sliding down, the triangular clamping block drives a speed reducing block to slide; the speed reduction blocks are clamped on the two sides of the speed reduction disc, so that starting resistance of the speed reduction disc is increased, and the situation that the speed reduction disc is seriously abraded due to the fact that the speed reduction disc is only subjected to pulling force of heavy objects during starting is prevented.
本申请公开了一种水利工程卷扬机,主要由底座、驱动电机、减速盘、齿轮箱、转轴、侧板、收卷筒、固定块、电磁减速机构和减速卡盘等构成,并在侧板靠近收卷筒一侧的侧面上均开设有螺旋槽,螺旋槽内滑动连接有弹性压条,弹性压条的内部开设有空腔,空腔的内部装有空腔一半容积的磁质流体。本发明通过卷扬机被制动后再次启动时,由于电磁减速机构上的电磁铁失去磁性,使得磁性楔块受自身重力作用顺着滑杆下滑,由于磁性楔块在下滑的同时会对三角卡块施加压力,从而使得三角卡块带动减速块滑动,使得减速块卡在减速盘的两侧,从而增加减速盘启动的阻力,进而防止减速盘在启动时只受到重物的拉力作用,造成减速盘磨损严重。
Winch for water conservancy project
一种水利工程卷扬机
2025-02-14
Patent
Electronic Resource
Chinese
IPC: | B66D Haspeln , CAPSTANS |
European Patent Office | 2020
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