43results about How to "Improve rock drilling efficiency" patented technology

The invention discloses a transition connection mining technique from outdoor mine to underground mine. A transition stage(2) from outdoor mining to underground mining is divided into a connection production middle section (4) and an emergency middle section (5); in the emergency middle section (5), mine chambers (13) and mine columns are divided, and the mine chambers (13) are firstly recovered by utilizing an open-stope method; in the mine chambers (13), upward drainage ventilation holes (12) are dug to be communicated with the connection production middle section (4); an enclosed waterproof door (11) is installed in a development drift (16) in the emergency middle section; a VCR (vertical crater retreat) method is adopted for mining by drilling rocks through an outdoor punching device (6) and discharging ores through an underground bottom structure; a drainage well (14) is drilled between a blind oblique well (10) and the waterproof door (11) and is communicated with the middle section of a main water bin; water accumulated in the mine chambers (13) is pumped and exhausted to the ground surface by a water pump in the main water bin, and the mine columns are recovered; then the underground mining stage (3) is transited. According to the invention, the safe and stable transition from outdoor mining to underground mining is realized, and the problems of underground sudden inflow of water threat, great damage of the preserved mine columns and difficulty in recycling at the rear stage are solved.

The invention discloses a simple and convenient rock drilling machine, and belongs to the technical field of rock drilling machines. The simple and convenient rock drilling machine comprises a box body, a bottom box is fixedly connected to the right side of the bottom of the inner wall of the box body, a top box and a movable box are fixedly connected to the top of the inner wall of the box body sequentially from left to right, and a connecting block is slidably connected to the left side of the inner wall of the box body; a motor box is fixedly connected to the side, far away from the inner wall of the box body, of the connecting block, a first motor is fixedly connected to the bottom of the inner wall of the motor box, and a first tapered gear is fixedly connected to the output shaft of the first motor; and a second tapered gear is engaged with one side of the first tapered gear. The simple and convenient rock drilling machine can conduct rock drilling conveniently, so that the size of the device is greatly reduced, and unnecessary wastes are reduced. Pressure can be increased simultaneously when a drilling bit drills a rock, the rock drilling efficiency is improved greatly, the time consumption is reduced, the burdens of operation workers can be relieved, and the operation is very convenient.

The invention discloses multi-angle adjustable rock drilling equipment, comprising a base; the top of the base is fixedly connected with a support block; the support block is internally and rotatably connected with a rotary rod; the surface of the rotary rod is respectively and fixedly connected with a limiting block and a rotating device; a power device is fixedly connected with one side of the rotating device; the rotating device comprises a first motor and a stable block; the bottoms of the first motor and the stable block are respectively and fixedly connected with the surface of the rotary rod; an output shaft of the first motor is fixedly connected with a disc by means of a coupling; the front of the disc is fixedly connected with a sliding rod; the multi-angle adjustable rock drilling equipment relates to the technical field of rock drilling. The multi-angle adjustable rock drilling equipment solves the problem that different-angle rock drilling operations need to be performed since rock mass structures are different in a rock drilling process, and the traditional rock drilling machine can not directly convert the angle for drilling rocks, greatly increases the working efficiency, and accelerates rock drilling progress, thus increasing the benefit of an enterprise.

The invention relates to a non-pillar sublevel caving mining method for discharging ores from a side part of an electric rake roadway. The method comprises the following steps: dividing an ore body into phases, and dividing each phase into segments; arranging segmented accesses in a rhombic staggered manner; excavating a way shaft and an ore chute from a foot-wall phase haulage way to an upper phase foot-wall haulage way along one end of an ore block; then, initially excavating a segmented connection roadway in a first segment of the current phase. The method is characterized in that the rhombic staggered arrangement refers to an arrangement manner of recovering accesses among segments; after the excavation of recovering accesses of the current segment is completed, an electric rake roadway is excavated between the two recovering accesses of the segment and parallel to the recovering accesses; ore crosscuts are excavated at certain intervals between the recovering accesses and the electric rake roadway; a hanging-wall exhausting roadway communicated with the electric rake roadway is excavated from the inner end of the electric rake roadway to the outer side of a mineral vein. Compared with the traditional non-pillar sublevel caving mining method, the non-pillar sublevel caving mining method, provided by the invention, has the advantages of high safety, low cost, good blasting effect, and high rock-drilling efficiency.

The invention discloses a hand-held rock drill which comprises a drill tool; a rock drill head is arranged at the top end of the drill tool; a rock drill main body is arranged at the top end of the rock drill head; a handle body is arranged at the top end of the rock drill main body; fixing seats are arranged on the two sides of the top end of the handle body respectively and are internally provided with clamping grooves respectively; a clamping column is connected to the interior of each clamping groove in a clamping manner; sliding blocks are arranged on the two sides of the lower part of each clamping column respectively and are arranged in limiting grooves formed in the inner wall of each clamping groove respectively; springs are arranged on the two sides of the bottom end of each clamping column respectively; a handle is arranged at the top ends of the two clamping columns; and a connection frame is arranged on the outer wall of the rock drill head and is rotationally connected with the rock drill head through a first rotation pin. By adopting the hand-held rock drill provided by the invention, vibration generated when the rock drill works can be well absorbed through the springs arranged on the two sides of the bottom ends of each clamping column respectively; and in addition, the sliding blocks on the two sides of the lower part of each clamping column can realize movement in a small range in the corresponding limiting grooves, so that people feel more comfortable when using the rock drill to work.

A pulse drilling machine (1; 1′) for the generation of shock wave pulses in a tool direction (R) including a housing (2) wherein an impulse piston (4; 4) is arranged, and including means (9) for abrupt change of a fluid pressure influencing the impulse piston in order to achieve a force resultant on the impulse piston in the tool direction and thereby generate a shock wave pulse in a drill string (13; 13′) which is connected to the machine, wherein inside the housing there is arranged a first fluid chamber (14; 3′) inside which a pressure fluid in operation is arranged to exert a pressure in the tool direction on the impulse piston. The machine is distinguished by a fluid flow channel (11; 18; 19), which includes means for damping a fluid flow flowing from said first fluid chamber through the fluid flow channel obtained when influencing the impulse piston (4; 4′) in a direction opposite to the tool direction (R) by rock reflexes in the drill string during drilling.

The invention relates to an automatic rock drilling device special for tunnel excavation, which has high rock drilling efficiency, is safe for using and contributes to saving time and construction cost. The automatic rock drilling device comprises a control stand, a support frame, a power device, a movable carrier and rock drilling equipment, wherein the support frame is arranged on the carrier; the power device, the control stand and the rock drilling equipment are arranged on the support frame; the power device is connected with the rock drilling equipment through a lead; the control stand is connected with the power device and the rock drilling equipment through leads respectively; the support frame is a square frame body; the support frame body is provided with at least one group of platforms capable of extending and contracting towards both sides; the rock drilling equipment comprises one or more groups of mechanical arms and drill bits arranged on the mechanical arms; one end of each mechanical arm is connected to the frame body; and the other end of each mechanical arm is provided with a drill bit. The automatic rock drilling device has the advantages of high rock drilling efficiency, use safety, saving in time and construction cost, and the like.

The invention provides a method for achieving fine blasting by replacing a vertical deep hole with a downward fan-shaped deep hole, and relates to the technical field of exploration. The method is characterized by comprising the following steps of stoping and rock drilling, optimization of stoping design, design of a stoping process for the downward fan-shaped deep hole, determination of blastingparameters, priming circuit connection, perforating deviation correction, determination of explosive charging requirements, and explosive charging and blasting. The method is reasonable, the workloadcan be reduced, the equipment utilization rate can be increased, and the working pace is quickened.

The invention discloses a mining medium-length hole drilling and blasting method, and relates to the technical field of underground mining. The mining medium-length hole drilling and blasting method comprises the steps that medium-length holes in mining are constructed by pneumatic or hydraulic drilling equipment in a subsection plane stoping route and then are charged and blasted, the whole medium-length holes in mining are arranged in a fan-shaped or parallel mode, and more than two different diameters are arranged in a staggered or bunchy mode; and charging blasting is carried out according to different arrangement forms, large-diameter blast holes are firstly detonated, and small-diameter blast holes are then detonated. The small-diameter blast holes are high in rock drilling efficiency, small in explosive loading amount and less in harmful gas generated by blasting, the rock drilling and blasting cost can be reduced under the condition that the blasting effect is not affected, so that the mining efficiency is improved, and the mining cost is reduced; and the blast holes with different diameters are detonated by different sections of detonators, the large-diameter blast holes play a main blasting role and are detonated firstly, and the small-diameter blast holes play an auxiliary blasting role and then are detonated, so that blasting shock waves and seismic waves are reduced.

The invention relates to a dual shaft-well drill which comprises two drilling rigs, a connection mechanism for connecting the two drilling rigs, a rock drilling mechanism and a hydraulic and air supply system connected with each drilling rig. The drilling rig comprises an upright column, a swing frame movably mounted on the upright column, a movable arm with one end mounted on the swing frame and the other end mounted on the rock drilling mechanism, and a support arm with one end mounted on the upright column; the rock drilling mechanism comprises a sliding frame, a compensation frame mounted on the sliding frame, a rock driller mounted on the sliding frame, and a drilling tool mounted on the rock driller. During operation, the two drilling rigs are in rigid connection with each other, and then the support arm of each drilling rig extends out to support the shaft wall and ensures the drilling rigs to be stabilized in the well, the rock drilling mechanism moves to the drill pore position in translation manner along with the movable arms and is driven by the auxiliary hydraulic system and air supply to drill rock. The dual shaft-well drill has the advantages that: the construction demands of large diameter shaft well are met, the moving speed is high, the productivity is high and the work intensity is greatly reduced for workers.

The invention discloses a novel pure-electric rock drill. The novel pure-electric rock drill comprises a drill bit connection board, a storage battery case, a handle connection board and a drill body. The storage battery case is fixedly mounted on the top of the drill body. A storage battery is arranged in the storage battery case. The handle connection board is welded to the rear end of the drill body. Outward-stretching rods are fixed to the two sides of the drill body. A drill bit is mounted in a threaded groove in the front end of the drill bit connection board. Front buffer boards are welded to the two sides of the top of the drill body and fixedly provided with buffer springs respectively and correspondingly. The other ends of the buffer springs on the two sides are fixed to a spring connection board which is fixed to the top of the drill body. A socket is mounted at the rear end of the top of the drill body and connected with the storage battery case through a wire. Side boards are mounted on the outward-stretching rods on the two sides correspondingly. The other ends of the side boards are fixed to two ends of a handle. Rubber covers are mounted on the two sides of the handle. The novel pure-electric rock drill has the beneficial effects that by means of the storage battery type pure-electric rock drill, dependence on a transformer case is eliminated, and the rock drilling efficiency is improved in cooperation with a series of buffering and damping mechanisms.

The invention discloses a cluster type down-the-hole hammer. The cluster type down-the-hole hammer comprises a drill rod and a down-the-hole hammer connected with the drill rod, a main air inlet channel is formed in the drill rod, a high-pressure air chamber communicated with the main air inlet channel is arranged on the down-the-hole hammer, an airflow adjusting valve with a valve block and an airflow adjusting hole is arranged between the drill rod and the down-the-hole hammer, and the airflow adjusting hole is closed by the valve block. An air inlet of the airflow adjusting valve communicates with the main air inlet channel, an air outlet of the airflow adjusting valve communicates with the high-pressure air chamber, a flow dividing air chamber is arranged on the down-the-hole hammer, and the opening degree of the valve block on the airflow adjusting hole is adjusted, so that high-pressure air in the main air inlet channel is divided into the flow dividing air chamber. According to the cluster type down-the-hole hammer, when the cluster down-the-hole hammer performs drilling and rock drilling operation in different stratums, air flow can be adjusted in time, so that the rock drilling efficiency is improved, and energy consumption is reduced. The whole linkage structure in the airflow adjusting valve is convenient to assemble and disassemble, a corresponding exhaust channel is arranged only by means of the structure of a down-the-hole hammer shell, no part needs to be additionally arranged, and structural design is reasonable and compact.