Dual-hinged mismatch short type strong hand cutting-off tool

Abstract

The invention discloses a dual-hinged mismatch short type strong hand cutting-off tool, relates to a hand tool product which can rapidly shear a steel bar, a cable, a steel wire rope and other metal wires in a narrow and small space for saving buried staff and materials during the emergency relief process when a building collapses due to an earthquake, a fire and other disasters, and belongs to the field of manufacturing of hardware tool products. The dual-hinged mismatch short type strong hand cutting-off tool is divided into an upper knife blade and a lower knife blade, one end of the upper knife blade is connected with one end of the lower knife blade through a pin shaft, the two knife blades can rotate and be opened and closed around the pin shaft, the other end of the upper knife blade is connected with the other end of the lower knife blade through a high-strength screw rod with a sleeve, a screw rod pin shaft and a nut, the nut can be rotated by a person through a wrench, then the opening and closing angle between the knife blades can be controlled, and the amplified shearing force can be applied on a material to be sheared, thereby achieving the shearing purpose. The dual-hinged mismatch short type strong hand cutting-off tool is small in volume, and a spiral force amplifier and the lever principle are utilized, thereby amplifying the operating force of a human body to tens of times and even hundreds of times and further realizing the strong shearing.

Description

technical field [0001] The present invention is a hand tool that can quickly cut steel bars, cables, steel wire ropes and other metal wires in a narrow space in order to rescue buried people and materials when buildings collapse due to disasters such as earthquakes and fires. Tool products belong to the manufacturing field of hardware tool products. Background technique [0002] When disasters such as earthquakes and fires occur, buildings often collapse. In the process of emergency rescue, in order to rescue buried people and materials, it is necessary to cut metal wires such as steel bars, cables, and wire ropes in a small space. In the case of electricity, quickly cutting these metal objects will buy precious time for rescue. For a period of time after the disaster, the site is often cut off, and electric tools are not available; flame, plasma, and laser cutting may not be available; tools such as hydraulic tools and bolt cutters are bulky and have long handles , the sh...

AI Technical Summary

Problems solved by technology

[0003] Technical issues: In post-disaster rescue, it is usually necessary to cut metal wires such as steel bars, cables, and wire ropes in a small space. Electric tools cannot be used due to on-site power outages. Flame, plasma, and laser cutting may not be available. Due to their large size and long handles, wire cutters and manual bolt cutters cannot perform cutting operations in a narrow working space, so a hand tool with a small size and sufficient cutting force is required

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