Impact groove expander

Abstract

The invention provides an impact groove expander. Clamped sludge between an odd-sequence number groove section and an even-sequence number groove section can be removed by the impact groove expander. The impact groove expander comprises two parts, namely, a groove former and two groove expanders, wherein the groove former comprises a lifting ring at the upper end, a water-inlet rubber pipe, and a plurality of cutter teeth at the lower end; a water-inlet steel pipe is connected with the lower end of the water-inlet rubber pipe; a cross pipe is connected with the lower end of the water-inlet steel pipe; a plurality of water nozzles are formed on the lower part of the cross pipe; a side water nozzle is formed at each of two ends of the cross pipe; the groove expanders are respectively arranged on the two sides of a power head; a cutter head is arranged at the lower end of a cutter arm; the middle of the cutter arm is hinged to the power head through a hinging shaft B; the upper end of the cutter arm is hinged to the upper end of a top rod through a hinging shaft A; the lower end of the top rod can slide on the upper surface of the power head; the upper surface of the power head is provided with a groove and a convex ridge; the upper end of a tension spring is connected to the upper end of the cutter arm; and the lower end of the tension spring is connected to the upper surface of the power head.

Description

1. Technical field [0001] The invention relates to a groove expander, in particular to an impact groove expander for joints of underground continuous wall groove sections. 2. Background technology: [0002] At present, the underground diaphragm wall constructed by the impact groove forming machine adopts the construction method of segmental jumping, that is, the single-numbered groove section is first formed, and the concrete of the single-numbered groove section reaches a certain strength, and then every two adjacent single-numbered grooves are formed into grooves. The double-numbered groove section between the groove sections, the concrete of the single-numbered groove section and the concrete of the double-numbered groove section are connected to form an underground continuous wall. When grooving double-numbered groove sections, in order to prevent drill sticking, the width of the double-numbered groove section should be greater than the width of the power head of the gro...

AI Technical Summary

Problems solved by technology

When grooving double-numbered groove sections, in order to prevent drill sticking, the width of the double-numbered groove section should be greater than the width of the power head of the groove-forming machine. In this way, there are places where the groove-forming machine cannot cut at the joint, and the single-number groove section and Mud is always present in the joints of double serial number slots. The traditional impact slotting machine relies on the water nozzles on both sides of the slotting machine to wash away the mud. The washing effect is not ideal, and the mud is serious.

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