Hand-held hydraulic expander

Abstract

The invention relates to a hand-held hydraulic expander which is mainly composed of an expansion arm, sharp raised heads, a hydraulic device and a top handle, wherein the expansion arm is composed of an upper sharp arm and a lower sharp arm, a semicircular curved dome is arranged at the rear part of each sharp arm, and a groove is formed in the inner side of each curved dome; the hydraulic device comprises a hydraulic cylinder, hydraulic rods and a hydraulic crank handle, and the hydraulic rods are connected with the sharp raised heads in the curved domes; groove bumps are arranged on the sharp raised heads and can slide on the grooves of the curved domes in a buckled manner; the top handle and the hydraulic cylinder are connected to the aftermost part. The hand-held hydraulic expander is simple in structure, and an operator only needs to insert the expansion arm into an expansion part and the operator can carry out hand expansion action. The hand-held hydraulic expander can be convenient for people to push in the expansion process so as to prevent slip, thereby achieving the purpose of safe expansion.

Description

technical field [0001] The invention relates to a portable expansion and breaking device, in particular to a hand-operated hydraulic expansion device, which belongs to the technical field of machinery industry. Background technique [0002] In an emergency, a few seconds lost can cost lives, and hydraulic expansion devices are used to free trapped people from damaged vehicles in time. Such devices could also be used to free trapped people from collapsed reinforced concrete structures after earthquakes. Hydraulic expanders are used to spread parts apart, or jam into the interior of a vehicle to tear a section apart. In the existing dilators, the sharp mouth of the dilator is inserted into the gap, and then the handle is grasped with both hands and shaken left and right for hydraulic expansion. During the process, there will be slipping and detachment, and the expanded body will snap back to its original position. During the process of snapping back to its original position,...

AI Technical Summary

Problems solved by technology

In the existing dilators, the sharp mouth of the dilator is inserted into the gap, and then the handle is grasped with both hands and shaken left and right for hydraulic expansion. During the process, there will be slipping and detachment, and the expanded body will snap back to its original position. During the process of snapping back to its original position, it may cause secondary damage to the pinched person.

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