Coring drill cylinder with convenient cooling performance and machining method thereof

Abstract

The invention provides a coring drill cylinder with convenient cooling performance. The coring drill cylinder is characterized in that a plurality of sawteeth are arranged at one end of a cylinder body of the drill cylinder, a plurality of first open grooves are formed in the outer wall of the cylinder body, and the first open grooves spirally extend in the axial direction of the cylinder body; cooling pipes are arranged inside the first open grooves; spraying openings are formed in the end, close to the sawteeth, of the cylinder body, the spraying openings communicate with the cooling pipes so as to be used for spraying cooling liquids to the sawteeth, and the distance between the spraying openings and outlets of the cooling pipes is not less than 0.3 time of the cylinder diameter; and liquid injection openings are formed in the end, away from the sawteeth, of the cylinder body, the liquid injection openings communicate with the cooling pipes to be used for injecting the cooling liquids into the cooling pipes, and the distance between the liquid injection openings and inlets of the cooling pipes is not less than 0.2 time of the cylinder diameter. The spiral open grooves are formedin the outer wall of the drill cylinder, the cooling pipes are arranged inside the open grooves, and the cooling liquids are sprayed to the sawteeth through the spraying openings through the coolingpipes, so that rapid cooling of the sawteeth is achieved, and meanwhile, heat exchange occurs between the walls of the cooling pipes and the wall of the drill cylinder, and effective cooling of the side wall of the drill cylinder is achieved.

Description

Technical field [0001] The present invention relates to the field of construction machines, and more particularly to a core drill tub that is easy to cool and its processing methods thereof. Background technique [0002] The core drill drill is a risher and a key working component for drilling on the pile driver. Since the core drill tube is rotated at high speed in the drill tube, the drill tube is rotated at high speed, which will cause the drill tube side wall and the front end to cut the sawtooth rapidly temperature rise. If it is not possible to cool down, the structural strength of the core drill should be greatly reduced, and the service life of the cut sawtooth is cut. The current solution is that during the high speed of the core drill tube, the cooling water is injected through the water pipe to the drilling hole. The drawback of such a cooling method is that the cooling water cannot flow into the cutting serration of the front end of the core drill. The sidewall of the...

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Problems solved by technology

[0003] Aiming at the defects in the prior art, the invention provides a conveniently cooled core drill barrel, which solves the problem that the cooling water cannot flow into the cutting sawtooth at the front end of the core drill barrel, and cannot effectively The technical problem of cutting the sawtooth on the side wall of the drill barrel and the front end of the drill barrel to cool down the temperature

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