16results about How to "Improve rock breaking ability" patented technology

The utility model belongs to the technical field of shield cutters, and particularly relates to a novel ultra-hard rock shield three-blade hob which comprises a hob body, the hob body comprises a hob shaft and a hob body, the hob body comprises a left cutterhead and a right cutterhead which are designed in a split mode, a first sealing ring is arranged between the left cutterhead and the right cutterhead, and a second sealing ring is arranged between the left cutterhead and the right cutterhead. A first sealing ring is arranged on one side of the left cutterhead, a second sealing ring is arranged on one side of the right cutterhead, a first cutter ring and a second cutter ring are arranged on the left cutterhead in parallel, a third cutter ring is arranged on the right cutterhead, and a plurality of cylindrical rollers are evenly distributed on the periphery of the cutter shaft and abut against and make contact with the inner side face of the left cutterhead and the inner side face of the right cutterhead respectively. A plurality of balls are uniformly distributed on the periphery of the cutter shaft between the two groups of cylindrical rollers, a through hole is formed in the cutter shaft corresponding to the mounting position of the balls, and a plugging rod is arranged in the through hole. The utility model has reasonable design, is convenient to process, improves the bearing capacity, ensures the working progress, ensures the tunneling effect, and meets the use requirements.

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.

The present invention discloses a hydraulic pulse vibration integrated tool based on rotor drive, comprising: a housing; a vibration actuator, a pulse generating mechanism, an upper transmission mechanism, a rotor driving mechanism and a lower transmission mechanism connected in sequence. When in use, the rotor driving mechanism is started, and the power is transmitted downward to the lower transmission mechanism, and the lower transmission mechanism transmits the power to the drill bit to break the rock. At the same time, the rotor driving mechanism transmits the power upward to the upper transmission mechanism, and the upper transmission mechanism transmits the power to the pulse generating mechanism. The pulse generating mechanism converts the rotation transmitted by the upper transmission mechanism into axial reciprocating movement to realize the axial reciprocating movement of the driving vibration actuator, and the vibration actuator is connected to the drill string, thereby realizing the pulse vibration of the entire hydraulic pulse vibration integrated tool, improving the rock breaking ability of the drill bit, and at the same time reducing the friction and support pressure between the hydraulic pulse vibration integrated tool and the drill string and the well wall, and improving the drilling pressure transmission efficiency.

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.

The present invention relates to the technical field of tunnel-specific engineering equipment, and specifically to a six-main-beam cutterhead center hob installation structure, comprising a cutterhead, wherein a center hob group is provided at the center of the front end face of the cutterhead, wherein the center hob group comprises a first hob module, a second hob module, a third hob module and a fourth hob module, wherein the four hob modules are in a cross-shaped configuration, wherein the hob axis of the fourth hob module is deflected to one side by an angle θ to provide a layout space for the front hob group, thereby increasing the number of front hobs to be arranged, and the hob size of the front hob group is larger than the hob size of the center hob group. A six-main-beam cutterhead, comprising the aforementioned six-main-beam cutterhead center hob installation structure. The present invention can increase the number of front hobs to be arranged, and since the size of the front hob is larger, the bearing capacity and rock breaking capacity are stronger, the rock breaking capacity and bearing capacity of the center area of ​​the cutterhead are enhanced, thereby improving the excavation efficiency and excavation capacity of the cutterhead.

The utility model provides a novel tooth-shaped shield tunneling machine hob cutter ring which comprises a base body and a friction ring, the friction ring is arranged on the outer circle of the base body in a sleeved mode, the thickness of the friction ring is smaller than that of the base body, and a plurality of grooves are distributed in the peripheral face of the friction ring in the circumferential direction of the friction ring. The method has the characteristic of improving the rock breaking efficiency of the hob of the shield tunneling machine in a low-strength rock stratum.

The invention discloses a safe low-energy-consumption liquid oxygen pressurization output system, and belongs to the technical field of mineral resource exploitation. The system comprises a vertical Dewar tank, a liquid pressurization system, a horizontal Dewar tank, a liquid-gas separation device and a shunting pipeline system, the vertical Dewar tank is connected with an inlet of the horizontal Dewar tank through the liquid pressurization system, and an outlet of the horizontal Dewar tank is connected with the shunting pipeline system through the liquid-gas separation device. And a preset flow valve group is mounted on a shunting pipeline of the shunting pipeline system. The invention aims to solve the problems of improving the liquid oxygen conveying efficiency and safety, reducing the gasification loss, reducing the energy consumption and improving the rock breaking accuracy in the prior art, improve the liquid oxygen conveying safety, ensure the liquid oxygen rock cracking effect and reduce the rock cracking cost.

The invention belongs to the technical field of roadway tunneling, and discloses a cantilever type disc cutter rock breaking tunneling device. Comprising a first-section working mechanism, a second-section working mechanism and a hinging mechanism for connecting the first-section working mechanism and the second-section working mechanism, the first-section working mechanism comprises a cutting part, a loading part, a first-section walking mechanism, a first-section machine body, a first-section conveying part and a cutting part swinging mechanism; the second-section working mechanism comprises a second-section conveying part, a second-section walking mechanism, a second-section machine body, a swingable discharging mechanism and a control system. The cutting part is high in rock breaking capacity and cutting efficiency, the cutting driving device of the cutting part rotates to drive the tool rest body and the disc cutter to rotate, meanwhile, the cutting part swing mechanism in the first section of machine body drives the disc cutter of the cutting part to be pressed into rock, the stability is good, meanwhile, left-right and up-down swing of the cutting part can be achieved, and the cutting efficiency is improved. And the cutting section can be adjusted at will within the application range.

The utility model belongs to the technical field of roller bits, and particularly relates to a six-mode screw drill universal shaft which comprises an upper movable hinge, a ball seat, a ball cap, a transmission key, an upper locking sleeve, a rubber sealing sleeve, a hexagonal connecting rod, a lower indentation sleeve and a lower movable hinge. The ball seat is embedded in the upper movable hinge; the ball cap is inserted into the top end of the hexagonal connecting rod and makes contact with the ball seat through a spherical surface. The top of the hexagonal connecting rod is connected with the upper movable hinge through a hexagon; the transmission key is arranged between the hexagonal connecting rod and the upper movable hinge; the upper locking sleeve is connected with the upper movable hinge through threads; the rubber sealing sleeve is connected with the hexagonal connecting rod and the upper locking sleeve and is used for ensuring that the transmission part works under the condition of sealing grease; the connecting structure of the lower end is identical to that of the upper end. Compared with point-line contact of a traditional petal-type universal shaft and line-line contact of a traditional ball-column-type sealing universal shaft, the universal shaft has the advantages that the anti-shearing face is greatly enlarged, the torque transmission capacity is remarkably improved, and the universal shaft can better adapt to the large-torque operation environment through a face-face contact mode.

The utility model relates to the technical field of anchor breaking machines, and discloses an outer telescopic roller structure convenient to maintain and replace, which comprises a fixed roller, the periphery of the fixed roller is fixedly connected with a first tooth holder, the periphery of the right side of the fixed roller is sleeved with an outer telescopic cylinder, and the periphery of the outer telescopic cylinder is fixedly connected with a second tooth holder. A mounting mechanism is arranged on the right side of the outer telescopic cylinder, a clamping mechanism is arranged on the left side of the mounting mechanism, the mounting mechanism comprises a rotary sealing piece, the rotary sealing piece is fixedly connected to the right side of the fixed roller, an oil cylinder connecting seat is fixedly connected to the right side of the fixed roller, and an oil cylinder body is fixedly connected to the right side of the oil cylinder connecting seat; a baffle is arranged on the periphery of the right side of the oil cylinder body. An outer side cantilever beam concentrated stress structure of the inner telescopic roller is improved into an outer telescopic cylinder overall concentrated stress structure, the load bearing strength of the outer telescopic cylinder is improved, the overall rock breaking capacity of the roller of the driving and anchoring machine is improved, and the situation that a tooth seat with a cushion block is broken off is little or no.

The invention provides a front-back mixing combined type abrasive water jet mechanism and a method thereof.The front-back mixing combined type abrasive water jet mechanism comprises ultrahigh-pressure water jet devices, a plurality of high-pressure abrasive water jet devices and a jet mixing acceleration device, and the ultrahigh-pressure water jet devices and the jet mixing acceleration device are arranged; the water jet device and the ultrahigh-pressure water jet device are obliquely arranged; the jet mixing acceleration device comprises a mixing cavity, a mixing jet nozzle and a locking assembly, a plurality of mounting holes are formed in the mixing cavity, one mounting hole is communicated with the ultrahigh-pressure water jet device, the other mounting holes are connected with the corresponding high-pressure abrasive water jet devices, and at least one high-pressure abrasive water jet device is communicated with the mixing cavity. According to the invention, the pre-mixed abrasive water jet is firstly formed, and then the ultrahigh-pressure water jet with higher speed is formed to perform secondary acceleration on the pre-mixed abrasive water jet, so that the speed of abrasive particles is remarkably increased, and the jet cutting effect is improved.

A multi-scale umbrella-shaped conical surface adjustable positive and reverse mining equipment and construction method, the equipment: the upper end of the fixed disc is equipped with four drill bits; the telescopic support rod is assembled at the lower end of the fixed disc through the base, and the tail end is externally sleeved with an expandable support disc base; the inner ends of the three expandable support discs are connected with the expandable support disc base, and the outer ends are provided with support fixed engagement racks; the outer conical surface of the movable main umbrella body has three rock breaking areas in sequence, and is sequentially provided with drill bits; the inner conical surface is sequentially provided with three support steps, and is sequentially provided with large, medium and small scale drilling fixed engagement racks; the ends of the three movable main umbrella body conical surface connecting rods respectively extend into the three arc-shaped grooves on the fixed disc, and the conical surface connecting rod and the arc-shaped groove are hinged through a rotating connecting piece. The method: according to the drilling object, the forward or reverse drilling mode is adopted, and the support angle is controlled according to the actual working condition. The equipment and method can meet the needs of various drilling conditions.

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.

The invention discloses a vertical shaft tunneling blasting method based on shaped charge, which comprises the following steps: drilling an empty hole in the center of an excavation section, sequentially drilling a plurality of slotting holes, a plurality of caving holes and a plurality of peripheral holes from inside to outside around the empty hole, the plurality of slotting holes, the plurality of caving holes and the plurality of peripheral holes are annularly arranged by taking the empty hole as a center; the slotting holes are sequentially filled with one-way shaped charge and stemming from bottom to top; the caving holes are sequentially filled with hole bottom shaped charge, common cartridges and stemming from bottom to top; the peripheral holes are sequentially filled with bidirectional shaped charge and stemming from bottom to top; and all blast holes in the excavation section are subjected to delayed blasting from inside to outside. The hard rock slotting blasting effect can be improved during vertical shaft tunneling blasting, the utilization rate of deep blast holes is increased, and the peripheral forming effect is improved.

The splicing combustion tube comprises a tube body, a plug and a splicing head, the tube body is of a hollow tubular structure, the plug is connected to the bottom of the tube body in an inserted mode, the splicing head is connected to the top of the tube body in an inserted mode, the splicing head comprises a first connector and a second connector, the first connector is arranged below the second connector, and the second connector is arranged below the first connector. The first connector and the second connector are both of a hollow structure penetrating through the upper end and the lower end of the first connector and the second connector and are both communicated with the pipe bodies, and the multiple pipe bodies of the same structure are sequentially connected in an inserted mode through the splicing heads to be communicated. According to the splicable combustion tube, the length of the combustion tube can be conveniently adjusted according to the actual length of a tunnel blast hole through the splicing head, use is more convenient, the flexibility is high, in addition, energy can be transmitted for combustion through the conical part, when fuel in one tube body is ignited, flames can be transmitted through the conical part of the splicing head, and the combustion efficiency is improved. Ignition of fuel in the other pipe body is accelerated, and the overall rock breaking effect is improved.