4results about How to "Improve rock breaking ability" patented technology

The utility model relates to a kind of rock breaking rods, it includes: including main body and hammer head, main body is covered with flexible layer outside, main body is equipped with movable cavity inside, movable cavity is arranged close to the bottom end of main body, several movable members are filled in movable cavity, and movable member can freely move in movable cavity. Hammer head is located below main body, and is connected with the bottom end of main body. Inertial motion of movable member can absorb and offset part of kinetic energy that bounces back to rock breaking rod, so as to significantly reduce rock breaking rod echo, improve rock breaking effect. Movable member shakes in movable cavity can significantly reduce the vibration of rock breaking rod and the intensity of high-frequency noise radiated outward, so as to be conducive to ecological environmental protection. Flexible layer covered outside main body buffers the vibration of main body, and reduces the noise propagated outward by main body. Therefore, the rock breaking rod can reduce the adverse effects of energy bouncing back to rock breaking rod.

The utility model discloses the technical field's biomass granule type fracturing rock pipe structure of rock breaking, including the flexible film cover of both ends closed, the flexible film cover is filled with the paper roll and biomass granule from bottom to upward interval in, still include from the liquid filling guide pipe, electric ignition device and exhaust pipe of its inside of penetrating into the top of flexible film cover. Through adopting biomass granule as the adsorption combustion agent of fracturing rock pipe, the problem of relatively high price of paper roll, and relatively low explosive force etc. is solved. And the addition of a small amount of paper roll as an igniter, ensure the quick ignition of biomass granule, the liquid filling effect is ensured while the liquid filling guide pipe ring support frame improves the rock breaking effect.

This utility model discloses a pneumatic impact-type pipe pile-anchor composite foundation construction device, including a stainless steel borehole wall casing, a prestressed pipe pile, an enlarged pile shoe body, a groove cavity, and pipe connectors. The stainless steel borehole wall casing is divided into a surface part and an inner part according to its position. The stainless steel borehole wall casing is installed around the pipe pile, and adjacent stainless steel casing walls are connected by iron chains and turnbuckles. The iron chains are embedded in the surface end face of the stainless steel borehole wall casing, and the lifting rings are embedded in the surface part of the stainless steel borehole wall casing. The stainless steel borehole wall casing passes through the prestressed pipe pile. The enlarged pile shoe body is divided into three parts: a shoe tip, a central fixing column, and an outer fixing ring. The enlarged pile shoe body is located at the bottom end of the prestressed pipe pile. This utility model can avoid the collapse of the top soil due to the impact and vibration of the falling pipe pile. At the same time, it does not use conventional drop hammers during construction, which can protect the quality of the pile top to a greater extent and reduce problems such as soil displacement and noise during construction.

This utility model belongs to the field of tunnel rock breaking equipment, specifically providing a rock breaking device and a cantilever tunneling machine. The rock breaking device includes a vibrating shell, inside which a rotatable main shaft is installed. The main shaft is equipped with a main drive mechanism to drive its rotation. A rock breaking head that rotates with the main shaft is connected to the front end of the main shaft. The central axis of the rock breaking head is eccentric to the rotation axis of the main shaft. The main shaft is hollow, and an eccentric block that rotates relative to the main shaft is installed inside the main shaft. The eccentric block is equipped with an eccentric drive mechanism to drive its rotation, thereby generating radial vibration. The cantilever tunneling machine includes the aforementioned rock breaking device. During construction, this utility model can achieve two combined working modes: eccentric rotation of the rock breaking head and radial vibration of the rock breaking head, achieving a "1+1>2" effect, improving the rock breaking ability of the device for extremely hard rock formations, and thus increasing rock breaking efficiency.