Double-wheel slot milling machine based on sprocket transmission and milling, and slot forming method

Abstract

The invention discloses a double-wheel slot milling machine based on sprocket transmission and milling, and a slot forming method. The double-wheel slot milling machine at least comprises a support frame, a rotary milling wheel, a driving wheel, milling wheel hubs, a milling cutter gear, a sprocket, a sprocket tensioning device and a sprocket wheel. The sprocket tensioning device pulls the drivingwheel to move up and down. The sprocket is connected with the driving wheel and the rotary milling wheel in a surrounding mode to achieve driving. A plurality of milling teeth are welded on the peripheral edge of the sprocket. The milling wheel hubs are arranged on two sides of the rotary milling wheel. A plurality of milling teeth are arranged on the circumferences of the milling wheel hubs at intervals. The sprocket wheel is located on the inner side of the sprocket to eject the sprocket outwardly during mounting. The double-wheel slot milling machine has the advantages that technical problems in the prior art are solved, rock stratums below the support frame can be milled completely, smoothness of the side wall of a milling groove is guaranteed, and slurry and rock debris are discharged quickly; triangular grooves can be formed in two sides of the milling groove respectively, and shearing strength and seepage-proofing effect at casted continuous wall joints after slotting are improved greatly.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a double-wheel slot milling machine based on chain tooth transmission and milling and a slotting method. Background technique [0002] In the current underground diaphragm wall construction operations, the double-wheel milling machine is the most advanced and widely used construction equipment. Its traditional structure and working principle are as follows: two rotating milling wheels are arranged on the left and right sides of a milling wheel support frame, and the two milling wheels are driven by the driving mechanism to rotate inward from the bottom, relying on the cutting teeth on the rotating milling wheel Mills dirt and rock formations and continuously rolls mud and cuttings out of the bottom of the tank. Since the supporting frame of the milling wheel has a certain thickness, there is a large gap between the hubs of the milling wheel on the front and rear si...

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Problems solved by technology

[0004] Although the above-mentioned several forms have a certain effect on solving the problem of milling blind spots, there are still the following problems: 1) when the swing teeth or the swingable milling wheel swing to the bottom of the support frame, the radius of gyration decreases, and the A raised rock formation is left on the side wall of the milling groove, which will eventually affect the strength and anti-seepage effect of the poured continuous wall joint; 2) The angle of the milling cutter teeth of the oscillating teeth or the oscillating milling wheel during the swing process It will change and affect its strength and cutting effect, especially when milling hard rock formations, it is very easy to damage the teeth of the milling cutter and reduce the construction efficiency; 3) The connection intermediary of the reciprocating oscillating cutting device must be flexible, so it does not move in the working state. stable, uncontrolled, and easy to interfere with the normal operation of peripheral equipment; 4) none of the above methods can effectively roll out the mud and rock debris under the support frame from the bottom of the tank, affecting construction efficiency

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