Secondary protection device for receiving plate of ship unloader

Abstract

The invention discloses a secondary protection device for a receiving plate of a ship unloader. The secondary protection device aims to overcome the shortcoming that if an existing cam limiter arranged on the ship unloader for controlling steel wire ropes on a roller of a winch to lift the receiving plate breaks down, the steel wire ropes will be snapped and the receiving plate will fall. A rope penetrating frame with the vertical face parallel with the center line of the roller is installed on one side of the roller, the steel wire ropes penetrate through the rope penetrating frame, and swing arms capable of swinging along with the vertical face are oppositely installed on the two sides of the vertical face, opposite to the roller, of the rope penetrating frame respectively. The rope penetrating frame is further provided with a limiting switch, and when wires, wound around the roller, of the steel wire ropes move excessively towards the two sides respectively, the limiting switch can push the swing arms to cut off power of the winch. When the wires, wound around the roller, of the steel wire ropes continuously and excessively move towards the winding side or the releasing side, the parts, in the rope penetrating frame, of the steel wire ropes forcibly push the swing arms to be deflected towards one side of the limiting switch and to touch one side of the limiting switch, and therefore the power of the winch can be cut off, the accident that the steel wire ropes are snapped and the receiving plate falls is prevented, and secondary protection is achieved.

Description

technical field [0001] The invention belongs to ancillary facilities, in particular to a device for secondary protection for a material receiving plate of a ship unloader. Background technique [0002] Use ship unloaders to unload bulk cargo such as figure 1 Shown is the use of the ship unloading grab 5 on the wharf 1 to grab the materials carried in the cabin of the cargo ship 7, and then transfer them to the top of the large funnel 9 of the ship unloader. The materials fall through the large funnel 9 to the process belt and are transported to the rear yard. [0003] In order to prevent leakage along the way when the grab bucket 5 is transferring bulk cargo, a large material receiving plate 6 is generally installed on the seaside side of the large funnel 9 of the ship unloader, and one end of the material receiving plate 6 is spliced ​​and installed on the seaside side of the large funnel 9 The edge, its other end hangs on the column 1.1 side of ship unloader with wire rop...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the problem that once the cam limiter that restricts the highest position of the receiving plate of the existing hoist fails, the steel wire rope will be broken due to excessive pulling, causing the receiving plate to fall out of control and cause a serious accident. Disadvantages, provide a secondary protection device for the receiving plate of the ship unloader

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