A high strength spreader head structure

Abstract

This utility model discloses a high-strength expander head structure, including a front blade, a rear blade, a central rod, an outer tube, a handle, a rotating wheel, and a pin. The rotating wheel is located at the tail end of the handle. The handle is fixedly fitted with the outer tube. The central rod is located inside the outer tube, passes through the inner cavity of the handle, and is connected to the rotating wheel. Rotating the rotating wheel causes the central rod to move within the outer tube and the handle. The outer tube includes a tube body and an upper support arm and a lower support arm located at the front end of the tube body. The upper and lower support arms have space to accommodate the front and rear blades. A pair of rear blades are mounted on the front end of the central rod via a pin. The front ends of the upper and lower support arms of the outer tube are respectively connected to a pair of front blades via pins. The rear blades and the front blades are connected via pins. This utility model improves the strength and operational stability of the device.

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