65results about How to "Improve rock breaking effect" patented technology

Disclosed is a combination scraping and impacting drill bit, belonging to the field of rock-breaking tools for drilling equipment for petroleum and natural gas, mine engineering, fundamental architectural engineering construction, geology, hydrology, etc. The drill bit comprises a drill bit body (1) and a fixed cutting structure (2) consolidated onto the drill bit body (1); further the drill bit body (1) is provided with an impact cutting structure (3); the impact cutting structure (3) comprises a transmission mechanism (32) for transmitting the impact force, and impact cutting teeth (31); the impact cutting tooth (31) is consolidated onto a punch (321) at the end of the transmission mechanism (32); and the punch (321) can slide or slidingly impact relative to the drill bit body (1) in the direction of impact force transmission. By comparison with a traditional PDC drill bit, the present drill bit is not only favourable for the cutting tooth of the drill bit entering into earth strata such that the rock-breaking efficiency is improved, but also favourable for the wear rate of the cutting tooth to be reduced, and particularly the present drill bit has an obvious technical advantage in the conditions of hard earth strata with relatively high strength and comparatively strong grindability.

The invention relates to a rock breaking device carried to an excavator, and the problems that an existing device scarifier is poor in rock entering angle, energy consumption is high, and the rock breaking effect is poor are solved. One end of a bucket rod cylinder is hinged to the upper edge of the middle portion of a big arm, and the other end of the bucket rod cylinder is hinged to the upper end of a small arm. The upper end of the small arm and one end of a scarifier oil cylinder are hinged, the other end of the scarifier oil cylinder is hinged to the upper end of the scarifier, the lowerend of the scarifier is connected with bucket teeth, and the ratio of the distance between a fourth hinge shaft and a first hinge shaft to the distance between the first hinge shaft and a seventh hinge shaft is larger than 0.8, the length of an upper part of the scarifier is larger than the distance between a fourth hinge shaft and the first hinge shaft, and when the fourth hinge shaft has multiple installing positions, the shortest distance serves as the criterion for the distances between the fourth hinge shaft and the first hinge shaft, and the length of the upper part of the scarifier is larger than the distance between the first hinge shaft and the seventh hinge shaft, and when the first hinge shaft has multiple installing positions, the shortest distance serves as the criterion for the distances between the first hinge shaft and the seventh hinge shaft, the total length of the scarifier is larger than the distance between the fourth hinge shaft and the seventh hinge shaft, and when the fourth hinge shaft has multiple installing positions, the shortest distance serves as the criterion for the distances between the fourth hinge shaft and the seventh hinge shaft.