42results about How to "Realize tapping" patented technology

The invention relates to a cutting machine, in particular to a pipeline cutting machine. The pipeline cutting machine is high in safety and low in manufacturing cost and integrates clamping and cutting. The pipeline cutting machine comprises a base, a supporting plate, a workbench, a first fixing block, a second fixing block, guide rods, a fixed clamping block, a movable clamping block, a first elastic piece, a rotating rod, a handle and the like; and the supporting plate is arranged at the top of the base, the workbench is arranged at the top of the supporting plate, the first fixing block and the second fixing block are symmetrically arranged on two sides of the top of the workbench, the guide rods are symmetrically arranged between the first fixing block and the second fixing block, andthe fixed clamping block is arranged at the top of the second fixing block. The pipeline cutting machine achieves the effects of high safety, low manufacturing cost and integration of clamping and cutting.

The invention relates to a production method for high-phosphorus and high-weathering series steel of the technical field of metallurgy and steelmaking, in particular to a method for single slag smelting low-carbon high-phosphorus and high-weathering steel by adopting a combined blown converter. According to the method, based on the improvement of a conventional converter steelmaking operation technology, by combining the requirement of decay resistance performance of high-weathering steel, the process smelting temperature of the converter is improved, the consumption of auxiliary materials and phosphorous-iron alloy of the converter is reduced, the losses in the blowing process of the converter are reduced, the content of TFe of converter final slags is reduced, and the content of phosphorus of a converter terminal is improved.

The invention discloses a mechanical behavior device for simulating a cigarette ash dropping process by a person, which is characterized by comprising a cigarette clamping mechanism, a cigarette lighting device located right in front of the cigarette clamping mechanism, a cigarette striking device located at one side of the cigarette clamping mechanism and an optical sensing device located at the other side of the cigarette clamping mechanism. The device of the invention has the advantages that through researching on the mechanical behavior when a person drops the cigarette ash, high consistency between the mechanical behavior when a mechanical device drops the cigarette ash and the actual mechanical behavior can be ensured; and the optical sensing device monitors the surface temperature of a burning cone during a cigarette smoking process, the cigarette end dropping phenomenon is recorded in real time through temperature detection, and automation and intelligence of the striking device are improved.

The invention discloses a wheat flour milling device for food processing. The wheat flour milling device comprises a supporting frame, a gear motor, a milling rotary drum, arc-shaped convex strips, ascreen, an end cover, an upper gear, a supporting shaft, a rotating drum, a lower gear, a milling roller, a feeding drum and a screening part, wherein the horizontal gear motor is fixed to the top endof the rear part of the supporting frame; and the horizontal milling rotary drum is fixed to the front portion of a rotating shaft of the gear motor, a plurality of horizontal arc-shaped convex strips are fixed to the outer wall of the milling rotary drum, the screen is fixed to the bottom end of the milling rotary drum, and the vertical end cover is installed in the middle of the rotating shaftof the gear motor through a bearing. The milling rotary drum and the milling roller can be driven to rotate oppositely at the same time through the gear motor, then the wheat milling efficiency is improved, meanwhile, a swing box and a swing piece are indirectly driven to swing left and right through rotation of the milling rotary drum, and therefore secondary screening of wheat flour can be achieved, blocking of the screen is avoided, and therefore, the working efficiency is improved.

The invention discloses a percussion head of an expectoration instrument, relates to the field of expectoration instruments, and provides the percussion head which achieves percussion through linear motion and is used for the expectoration instrument. The percussion head of the expectoration instrument comprises a shell, an end cover, a motor, a driving disc, a vibration disc, reset springs, a flexible head, an adjusting sleeve and a handle; at least two guide pillars are connected to a lower end plate of the shell; the end cover covers a main shell body; the motor, the driving disc, the vibration disc and the reset springs are coaxially arranged in the main shell body from top to bottom; the motor is connected with the end cover; the driving disc is connected with the motor, bearings arearranged between the driving disc and the main shell body and limit the driving disc to axial movement, an annular driving track is arranged on the driving disc, and the surface of the annular drivingtrack is in a wavy shape; the vibration disc sleeves the guiding pillars, and balls are arranged on the vibration disc; the reset springs make the balls be in contact with the annular driving track;the flexible head is connected with the vibration disc, and the adjusting sleeve is connected with the shell and is adjustable in axial position; the handle is connected with the main shell body.

The invention discloses an environmental-friendly dust collecting device. The environmental-friendly dust collecting device comprises a box body, the box body is internally rotationally connected withtwo sets of rotating shafts, the outer ring of each rotating shaft is provided with rotating rods, the outer ring of each fixing shaft is rotationally sleeved with a driven shaft, the top portion ofeach driven shaft is welded with a rotating plate, the bottom of one side of each rotating plate is welded with a fixing block, the bottom of each fixing block abuts a filter net, one side of the filter net is provided with two sets of rollers, the outer ring of each roller is fixedly sleeved with a rotating cylinder, one side of each rotating cylinder is provided with a dust collecting box, the top portion of each dust collecting box is welded with a sliding plate, one end of each movable rod is slidably connected with a shell body, one end of each movable rod is hinged with a first connecting rod, one end of each connecting rod is provided with a balance rod, one side of each balance rod is hinged to a bracket, the upper portion of one side of each balance rod is provided with a second connecting rod, one end of each second connecting rod is hinged to a movable block, and the inner ring of each movable block threadedly sleeves a threaded rod. The environmental-friendly dust collecting device has the advantages that it is avoided that the dust collecting efficiency is low caused by the blocking of the filter net, the blocking of the filter net is avoided, the environmental-friendly dust collecting device is easy to assemble and disassemble, and the use is convenient.

The invention discloses garden greening automatic water storage equipment. The equipment comprises a water storage box, a control device arranged on the lower portion of the water storage box and a water storage device arranged in the water storage box. The control device comprises a heat absorption box, paraffin arranged in the heat absorption box, a lifting plate arranged below the paraffin, lifting springs arranged on the left side and the right side of the lifting plate and a press-down device arranged on the lower portion of the lifting plate. The heat absorption box is fixedly connectedwith a water outlet pipe, and the lifting plate moves up and down in the heat absorption box. Through the principle of heat expansion and cold shrinkage, the paraffin is reduced or enlarged under temperature changes so control changes of the water outlet quantity, meanwhile, rainwater is filtered, impurities generated after filtering are beaten, and the rainwater collection quantity is improved.

The invention discloses a slope tapping conversion device for a die internal tapping machine. The slope tapping conversion device comprises a working panel, a gearbox, a connecting shaft, an adjustingscrew, a support spring, a screw driver and a chuck assembly of the screw driver, wherein the gearbox is arranged under the working panel and comprises a driving steering gear and a driven steering gear, an inner hole in the rotary center of the driven steering gear is connected with a gear shaft, the gear shaft is connected with a steering embedding part on the gearbox, and an engaging angle between the driving steering gear and the driven steering gear can be changed; the screw driver and the chuck assembly of the screw driver are sheathed on the gearbox; the chuck assembly of the screw driver and the screw driver are used for changing or adjusting the engaging angle of the gear according to the inclining angle of the workpiece surface, thereby changing the tapping angle. The slope tapping conversion device has the advantage that the feeding angle of the screw driver can be adjusted according to the surface slope of a sheet metal part, so that the tapping on the slope of the punchedsheet metal part is realized.

The invention relates to a smelting method of steel with high phosphorus content. The smelting method is suitable for a converter of 180-250t. The smelting method comprises the following steps: in the converter blowing process, adjusting the oxygen lance position and the oxygen supply strength according to the oxygen supply amount; and carrying out endpoint control on the converter, wherein the endpoint control comprises the following steps: on the basis of the percentage by mass, controlling MgO to be 15-18%, FeO to be 9%-12% and endpoint phosphorus to be 0.030%-0.070%, and controlling the alkalinity of slag at the endpoint to be 2.0-2.5. According to the smelting method, the endpoint phosphorus content of the converter can be increased, consumption of ferro-phosphorus alloy is reduced, and on the basis of the percentage by mass, the method is suitable for smelting the grade of steel, of which the phosphorus content in a finished product is greater than or equal to 0.070%.

The invention relates to an insect trap, in particular to an insect trap for agricultural insect prevention. The insect trap for agricultural insect prevention can better attract insects and thoroughly kill the insects. The insect trap for agricultural insect prevention comprises supporting columns, a top cover plate, a material storage barrel, a vibrating mechanism and an opening and closing mechanism; the conical material storage barrel is arranged between the upper portions of the supporting columns; the top cover plate is arranged on the conical storage barrel; the material storage barrelis arranged between the supporting columns; the vibrating mechanism is arranged on the top cover plate; and the opening and closing mechanism is arranged on the material storage barrel. A servo motoris started to achieve rotation of a rotating shaft, then the vibrating mechanism is matched with the opening and closing mechanism to electrically injure the insects, in this way, the insects can be captured conveniently, and the insects on a power grid are shaken off through cooperation of a cam and a cylinder.

The invention provides a neural percussion device for the neurology department. The neural percussion device comprises a shell body which is of a cuboid structure. A rectangular limiting ring is fixedly arranged on the inner wall of the left end of the shell body, one ends of guiding rods are separately and fixedly connected with the upper end and the lower end of the right side of the limiting ring, and first springs are arranged at one ends of the guiding rods in a sleeved mode. One ends of the first springs are fixedly connected with the side portion of the limiting ring, and the other endsof the first springs are fixedly connected with the left side portion of a baffle, guiding holes are formed in the upper end and the lower end of the left side of the baffle, and the right end facesof the guiding holes communicates with the external world. A certain knocking force is applied to patient bodies by adjusting, so that neuro reaction capacity of the patients can be accurately judgedaccording to reactions of the patients after being knocked, and specific evidences are provided for diagnosis of medical staff; and automatic knocking to the patient bodies can be realized, so that the wrist power during knocking by the medical staff is saved, and the labor intensity of the medical staff is effectively reduced.

The invention discloses a direction changeable type tapping mechanism. The direction changeable type tapping mechanism comprises an input gear, an output gear and a rocking handle gear, wherein the rocking handle gear comprises a rocking handle, a first transmission gear and a second transmission gear, the first transmission gear is meshed with the second transmission gear, the rocking handle is of a fan structure, one end of the rocking handle is hinged to a machine body, an arc-shaped reversing groove is formed in the position close to the fan-shaped edge of the rocking handle, a limiting pin which is fixedly connected with the machine body is clamped in the reversing groove, the first transmission gear and the second transmission gear are located at positions, close to the fan-shaped edge, of the rocking handle and hinged to the rocking handle, and the tooth surfaces of the first transmission gear and the tooth surfaces of the second transmission gear protrude out of the fan-shaped edge of the rocking handle; the input gear is hinged to a machine frame and can be meshed with the first transmission gear or the second transmission gear, and a tapping awl can be driven by the output gear; the input gear is hinged to the machine frame and is meshed with the first transmission gear, and the hinge point of the input gear coincides with the hinge point of the rocking handle. According to the direction changeable type tapping mechanism, tapping and retreating can be achieved without the need of a double-faced motor, and tapping at different depths and tapping in different directions can be achieved.

The invention discloses coal mine goaf filling and grouting equipment. The coal mine goaf filling and grouting equipment comprises a support drilling mechanism, a water pumping detection mechanism, asoil excavating mechanism, a soil pressing mechanism and a pressurizing and grouting mechanism; the support drilling mechanism comprises a bottom frame, universal wheels, a controller, a sliding frame, a rack groove, a driving motor and a pushing handle frame; the universal wheels are fixedly installed on the lower end face of the bottom frame; the lower end face of the controller is fixedly connected with the upper end face of the bottom frame; the rack groove is fixedly formed in the upper end face of the bottom frame; a gear on the sliding frame is meshed with the rack in the groove in theside end face of the rack groove; the driving motor is fixedly installed on the side end face of the sliding frame, and a motor shaft of the driving motor is fixedly connected with the gear on the sliding frame; the pushing handle frame is fixedly installed on the rear end face of the rack groove so as to drive a drilling motor to move downwards; the water pumping detection mechanism is fixedly installed on the upper end face of the sliding frame; the soil excavating mechanism and the pressurizing and grouting mechanism are fixedly installed on the upper end face of the bottom frame; and the soil pressing mechanism is fixedly installed on a baffle on the upper end face of the bottom frame.

The invention relates to a cement board demolding device, and particularly relates to a cement board demolding device for production. The cement board demolding device for production is high in automation degree, high in demolding efficiency and good in demolding effect, and a cement board is not prone to being damaged. The cement board demolding device for production comprises a bottom plate, a containing mechanism and a demolding mechanism, wherein supports are evenly arranged on the bottom plate, the containing mechanism is arranged between the supports, and the demolding mechanism is arranged on the bottom plate. According to the cement board demolding device for production, a mold and the cement board are placed through the containing mechanism, and then efficient demolding of cement is achieved under cooperation of the demolding mechanism; and a clamping mechanism is arranged, and therefore clamping of the mold and the cement board is achieved.

The invention discloses an SPAAF (super power alternating arc furnace) system and a charging / smelting / tapping tooling structure method thereof. The SPAAF system with two dual-channels is a continuous-arc and co-production SPAAF aiming at five material sources and two finished products. The SPAAF system comprises a six-direction ultrashort wing-type full short net, a sling-free dual-channel smelting bottom titling furnace, an exponential repeated-crossing vibrating bed co-production transport machine and a joint of the three above. The SPAAF system is mainly characterized in that the six-direction ultrashort wing-type full short net is constructed by considering and combining the factors such as height, length, stop-motion, density, procedure and device; a continuous-arc dual-channel charging / liquid arc smelting / product smelting bottom tilting furnace is constructed by using a sling-free fixed wall cover; and the exponential repeated-crossing type dust heat recovery / purification / DRI2 (direct reduced iron 2) transport machine is constructed by using storehouse granular bed. The system comprises the following main structures: a short dynamic-resistant balanced net, a slope vibrating and transporting cavity warehouse, a bending and crossing seam air channel, cross and superimposed flow groove teeth, a wall cover fixed pair and roller titling bottom-limiting furnace.

A servo power cutter head comprises a servo motor, a gear case, a first gear, a second gear, a main shaft, a shaft shell and a main shaft base, wherein the first gear is matched with the second gear. The main shaft base is fixed on a lathe carriage, the main shaft is installed at one end of the main shaft base through the shaft shell, the working end of the main shaft is provided with a cutter, the other end of the main shaft is provided with the first gear, the second gear matched with the first gear is installed at the output shaft end of the servo motor, the two gears are sleeved with the gear case which is respectively connected with a motor outer shell and the main shaft shell. The servo power cutter head can be installed on a lathe, and in the process of turning, milling, drilling and taping are achieved. A shaft seal device is arranged between the working end of the main shaft and the shaft shell, cutting oil, chippings and the like can be effectively prevented from entering the main shaft, and a bearing of the main shaft is prevented from being abraded and scrapped. The main shaft can operate stably, and the service life of the bearing of the main shaft is prolonged. The height of the main shaft is adjusted by adjusting two shaft shell adjusting nuts, and height fine adjustment is achieved. A bearing thrust nut and a thrust locking nut are used for preventing the main shaft from floating axially and for locking the bearing.

The invention discloses cleaning equipment for a kitchen sink. The cleaning equipment comprises a connecting basin, a water pipe, a filter cylinder, a driving mechanism and a limiting mechanism, wherein the driving mechanism comprises blades, a rotating rod, a first bearing seat, a first bevel gear and a driven assembly, and the limiting mechanism comprises a fixing rod, a positioning rod, a first spring, a connecting cylinder and a baffle. According to the cleaning equipment for the kitchen sink, residues located in the filter cylinder are thrown onto the inner wall of the filter cylinder under the action of centrifugal force, water flow can better flow into a water pipe through the bottom of the filter cylinder, blades are driven through the impact force of the water flow, and therefore a filter screen is rotated; meanwhile, the filter cylinder and residues can be sterilized, a vibration mechanism is driven to operate through rotation of a connecting rod, the inner wall of the filter cylinder is knocked, the residues adhering to the filter cylinder are separated from the inner wall of the filter cylinder, garbage in the filter cylinder is more convenient to clean, and linkage of multiple mechanisms is achieved through the same driving source.

The invention relates to grinding equipment, in particular to grinding equipment for chili powder. The grinding equipment for the chili powder is convenient to collect and good in sealing performance. Grinding equipment for chilli powder comprises a base, and first mounting blocks are symmetrically arranged at the top of the base; the loading mechanism is arranged at the top of the first mounting block; the first connecting block is arranged on the charging mechanism; the second connecting block is arranged between the upper parts of the first mounting blocks; the millstone is rotationally arranged in the second connecting block, and the millstone rotates in the first connecting block; and the rotating mechanism is arranged on the first mounting block. According to the chilli powder grinding device, the rotating mechanism is started, then the grinding disc rotates, chilli grinding is achieved, and then under cooperation of the charging mechanism, people can conveniently collect chilli powder.

The invention relates to an agricultural low-energy-consumption insect repelling lamp, which comprises a base, a collecting mechanism, an insect repelling mechanism and a connecting mechanism. The connecting mechanism comprises a fixing rod, a rotating rod, a connecting rod and a ball, the insect repelling mechanism comprises a rotating ring, power grid plates, a lamp tube, a cleaning assembly and a power generation assembly, and the collecting mechanism comprises a collecting box, a lifting assembly and a vibration assembly. According to the agricultural low-energy-consumption insect repelling lamp, rotation of a fan is achieved through wind power, so that power supply to the power grid plates and the lamp tube is achieved, electric energy is saved, the lamp tube can be protected and prevented from being damaged through the rotating ring, meanwhile, heat dissipation of the lamp tube is achieved through rotation of the fan, and control over the wind direction is achieved through the rotatable rotating rod, so that the power generation efficiency is improved. The situation that since mosquitoes freely fly or fall on the ground, the surrounding air environment is affected is avoided through the collecting mechanism, meanwhile, the power grid plates are knocked through the vibration assembly, and the situation that the mosquito killing efficiency of the power grid plates is affected due to the fact that the mosquitoes adhere to the power grid plates is prevented.

The invention belongs to the technical field of garbage treatment, particularly relates to a municipal garbage solid-liquid separation device, and aims to solve the problems that a conventional municipal garbage separation device is single in general operation mode, generally only depends on garbage extrusion and solid-liquid separation, and is not ideal in actual separation effect. The municipalgarbage solid-liquid separation device comprises a separation tank, wherein an outer fixing frame is arranged on the outer wall of the separation tank, guide rails are fixedly mounted on the two sidesof the outer fixing frame correspondingly, and sliding blocks are slidably connected to the two ends of the inner walls of the guide rails correspondingly. According to the invention, by arranging abottom supporting spring and a top tension spring which are different in specification and position, in the operation process of the device, vibration can be generated due to extrusion and cutting operation, and the vibration phenomenon is further amplified in cooperation with the bottom supporting spring and the top tension spring, so that the distance between the hammering block and garbage on the separation net plate is changed in a reciprocating mode so as to knock and compress the garbage; and the knocking effect on the garbage is improved through the protruding blocks, so that smooth solid-liquid separation of the garbage is guaranteed.

The invention provides a civil engineering stone sand screening device. The civil engineering stone sand screening device comprises a base and a sand net, wherein mounting plates are arranged on the base, and the inclined sand net is arranged between the mounting plates; a shell with an upper opening and a lower opening is arranged on the upper sides of the mounting plates, a hopper is arranged onone side in the shell, an inner sleeve connected with the hopper is arranged in the hopper, a motor is arranged on the lower side of the inner sleeve, a driving wheel is arranged at one end of an output shaft of the motor, a material receiving disc with a slope is arranged on one side of the driving wheel, a driven wheel matched with the driving wheel is arranged on one side of a motor shell, a connecting rod is arranged on one side of the driven wheel, the connecting rod penetrates through the upper side of the inner sleeve, and a material smashing rod is arranged at one end of the connecting rod and is located between the hopper and the inner sleeve.

The invention relates to the field of nut machining equipment, and particularly relates to a full-automatic tapping machine and a working method thereof. During working, after a tray rotates to a position where one nut groove is right corresponding to a material pushing groove, a top plate rises, and a screw tap is jacked upwards along a limiting sleeve to extend out of the nut groove; then a clamping mechanism clamps the screw tap, and the screw tap is taken out to the position above the nut groove; then a push rod pushes a nut in the material pushing groove into the nut groove; and then theclamping mechanism places the screw tap on a center hole of the nut; and then a rotary disc and the tray continue to rotate synchronously, a screw tap clamping sleeve is driven to descend gradually and rotate automatically, thus a clamping groove of the screw tap clamping sleeve descends to enable the upper end of the screw tap to be correspondingly sleeved with the clamping groove, under drivingof the screw tap clamping sleeve, the screw tap descends gradually and rotates automatically in the same way, the spiral descending state is formed, and thus tapping of the nut is achieved. Compared with a manual operation mode, the automatic tapping mode is more convenient and faster, and the production efficiency of nut tapping can be effectively improved.

The invention relates to a cutting machine, in particular to a pipe cutting machine. The technical problem of the present invention is how to provide a pipe cutting machine with high safety, low cost and integrated clamping and cutting. A pipe cutting machine, including a base, a support plate, a workbench, a first fixed block, a second fixed block, a guide rod, a fixed clamp block, a movable clamp block, a first elastic member, a rotating rod, a handle, etc.; the top of the base A support plate is provided, a workbench is arranged on the top of the support plate, the first fixed block and the second fixed block are symmetrically arranged on both sides of the top of the workbench, and guide rods are symmetrically arranged between the first fixed block and the second fixed block, and the second A fixed clip block is arranged on the top of the fixed block. The invention achieves the effects of high safety, low manufacturing cost and integrated clamping and cutting.

The invention relates to an efficient tapping clamping device. The efficient tapping clamping device comprises a base, two supporting frames, a pneumatic cylinder, a pneumatic valve and a pressure relay, wherein the two supporting frames are fixedly arranged on the two sides of the upper end of the base respectively, and stop blocks are fixedly arranged at the upper ends of the two supporting frames; the pneumatic cylinder is fixedly arranged at the upper end of the base and is located between the two supporting frames; an output shaft of the pneumatic cylinder is located at the upper end of the pneumatic cylinder, an upper push block for placing a work-piece is arranged at the upper end of the output shaft of the pneumatic cylinder, and the output shaft of the pneumatic cylinder stretches out and retracts to drive the upper push block and the work-piece to vertically move; the pneumatic valve is fixedly arranged on one supporting frame, communicates with the pneumatic cylinder through an air pipe and further communicates with an external air source through an air pipe; and the pressure relay is embedded at the upper end of the push block, and the control end of the pneumatic valve is connected with the pressure relay through a line. Compared with the prior art, the efficient tapping clamping device has the advantages that the irregular work-piece is stabilized and tapped, and the tapping precision and efficiency are high.

The invention discloses a knocking head of an expectoration instrument, relates to the field of expectoration instruments, and provides a knocking head of an expectoration instrument which only moves in a straight line to realize tapping. The percussion head of the expectoration instrument includes a shell, an end cover, a motor, a drive plate, a vibrating plate, a return spring, a flexible head, an adjustment sleeve and a handle; at least two guide posts are connected to the lower end plate of the shell; On the main body of the housing; the motor, the drive plate, the vibrating plate, and the return spring are coaxially arranged in the main body of the shell from top to bottom; the motor is connected to the end cover; the drive plate is connected to the motor, and a Bearings, the bearings limit the axial movement of the drive plate, and the drive plate is provided with a ring-shaped driving track, the surface shape of which is wavy; the vibrating plate is set on the guide column, and balls are set on the vibrating plate; the return spring makes the ball and the ring drive The flexible head is connected with the vibrating plate, the adjusting sleeve is connected with the housing and the axial position can be adjusted; the handle is connected with the main body of the housing.

The invention relates to an insect catcher, in particular to an insect catcher for agricultural insect control. Provided is an agricultural insect-repelling insect trap capable of better attracting insects and completely killing insects. An agricultural pest control insect trap, comprising: support columns, a conical storage tube is arranged between the upper parts of the support columns; a top cover plate, a top cover plate is provided on the conical storage tube; There is a storage tank; a vibration mechanism, a vibration mechanism is provided on the top cover; an opening and closing mechanism, an opening and closing mechanism is provided on the storage tank. By starting the servo motor, the rotation of the rotating shaft is realized, and then the insects are electrically injured through the cooperation of the vibration mechanism and the opening and closing mechanism, so that the insects can be easily captured. Among them, the insects on the grid are shaken by the cooperation of the cam and the cylinder. fall.

The invention discloses a bidirectional tapping machine which comprises an input gear, a steering eccentric wheel, a swing arm and an output gear, one end of the input gear is fixedly connected with a belt wheel which is coaxial with the input gear, and the belt wheel is connected with a belt wheel of a motor through an elastic belt. The swing arm is fixedly connected with the steering eccentric wheel, the input gear is hinged between the swing arm and the steering eccentric wheel, and the outer contour of the steering eccentric wheel is hinged to a rack. The swing arm is further hinged to an idle gear which is meshed with the input gear. The output gear can be meshed with the input gear or the idle gear, and the output gear drives a tapping screw. The idle gear, the output gear and the input gear are all divided into left half parts and right half parts, and the contact end faces of the left half parts and the right half parts are all provided with inverted-cone-shaped protrusions and inverted-cone-shaped clamping grooves which are clamped with each other. The bidirectional tapping machine can achieve propelling and retreating of tapping without the need of a two-sided motor, and tapping at different depths in different directions can further be achieved.

The invention relates to a method for smelting steel with high phosphorus content, which is suitable for a 180-250 ton converter, comprising: adjusting the position of the oxygen lance and the intensity of the oxygen supply according to the amount of oxygen supplied during the blowing process of the converter; End point control; the end point control includes: in terms of mass percentage, MgO is controlled at 15-18%; FeO is controlled at 9-12%; end-point phosphorus is controlled at 0.030%-0.070%; the basicity R of the slag at the end of the converter is controlled at 2.0% -2.5. The smelting method can increase the phosphorus content at the end point of the converter and reduce the consumption of the phosphorus-iron alloy, and is suitable for smelting steel types with a finished product phosphorus content ≥ 0.070% in terms of mass percentage.