32results about How to "Quick Loose" patented technology

The invention discloses a pest-repelling biological organic fertilizer for dragon fruit trees, and belongs to the technical field of preparation of fertilizers. The pest-repelling biological organic fertilizer for dragon fruit trees comprises a tobacco fertilizer, Nerium indicum leaves, onion, Crotalaria mucronata, tea leaves, barnyard manure, bagasse, plant ash, a cake fertilizer, animal manure, household garbage, ammonium dihydrogen phosphate, Aspergillus oryzae, yeast, Bacillus subtilis, mycorrhizal fungi, Azotobacter vinelandii, photosynthetic bacteria and Paecilomyces lilacinus. The tobacco fertilizer, Nerium indicum leaves, onion, Crotalaria mucronata and tea leaves having a pest repelling function are added to the pest-repelling biological organic fertilizer, so the stress resistance of the dragon fruit trees is improved, grubs, mole crickets, termites, ground nematodes and other dragon fruit tree plantation common pests are effectively dispelled, the use of pesticides is reduced, and the quality of dragon fruits is improved.

The invention relates to the technical field of plant nursery stock cultivation, in particular to a management method for promoting prematurity of potted butterfly orchid. The management method comprises the following steps: removing a butterfly orchid seedling which is 1.5 inches from a pot once every 50 to 52 days, immersing the seedling in a purple non-sulfur germ secreta extracting solution, wrapping the surface of each butterfly orchid leaf with a layer of blue polyethylene film, carrying out treatment with dark light, weak light, moderate light and strong light cyclically in sequence for 4 to 5 cycles, and after the butterfly orchid is bloomed, and watering the root of the butterfly orchid once with a solution with sodium alizarin sulfonate diluted by 800 times every other 5 days. After being treated by the management method, the butterfly orchid seedling which is 1.5 inches can be bloomed in advance within 5 to 6 months, and the flowering phase can be lasted for 60 to 75 days.

The invention provides a glue removing machine clamping spindle comprising a cylinder, a cylinder seat, a spindle mounting plate, a spindle barrel, a spindle, a pushing rod, a clamping shaft sleeve, a clamping lifting sleeve and a wafer. The cylinder is fixedly installed at a lower end of the cylinder seat, the spindle mounting plate is fixedly installed at an upper end of the cylinder seat, the spindle barrel is fixedly installed on the spindle mounting plate, the spindle is rotatingly arranged in the spindle barrel, and a first through hole penetrating up and down is set in the spindle. The glue removing machine clamping spindle can realize rapid clamping or loosening, the accurate positioning of the wafer is ensured by point clamping without positional deviation, the fine adjustment of clamping force can be realized, and nitrogen gas is introduced to prevent the spindle from being damaged.

The invention relates to a powerful dredging plunger for a wash basin and in particular relates to the dredging plunger for the wash basin. A close cover (13) is arranged at the upper end of a stand pipe (18), a rubber ring (21) is arranged at the lower end of the stand pipe, a side connection pipe (12) and an inclined pipe (17) are respectively arranged on two side walls of the middle part of the pipe, the lower end of an inclined pressure pipe (6) is connected with the inclined pipe, at least one rubber loop (4) arranged at the outer edge of a piston column (5) is in interference fit with the wall of an inner pressure cavity (7) of the inclined pipe, the upper end and the lower end of a connection rod are respectively connected with the lower end of a movable handle and the upper end of the piston column, and the middle part of the connection rod is positioned in a sleeve (2) at the upper part of the inclined pipe. According to the powerful dredging plunger for the wash basin, the stand pipe is pressed so that a drain port is closed by the rubber ring, and foreign matters difficult to clear in a pipeline are separated from the pipeline quickly by combining intensity of pressure of running water and pressure of the piston column so that precious time for dredging the pipeline is greatly saved.

The invention relates to the technical field of plant seedling cultivation, in particular to a management method for promoting potted kaffir lilies to bloom early. When kaffir lilies grow to have 4-5 leaves respectively, the kaffir lilies are moved out one time at intervals of 30-35 days and are soaked in a dark red spirillum secreta extracting solution, the surfaces of the leaves of the kaffir lilies are coated with a layer of red polyethylene film, 4-5 cycles of processing are sequentially performed with dark light, dim light, medium-intensity light and strong light; after the kaffir lilies flower, 500 times of clavulanate potassium liquid is irrigated at root systems of the kaffir lilies. By adopting the management method, the kaffir lilies growing to have 4-5 leaves respectively can bloom early within 10-13 months after being processed, and a blooming period can last for 65-80 days.

The invention relates to a powerful plunger for a closestool and in particular relates to a closestool plunger. A casing pipe (5) is arranged at the upper end of a pipe (10), a pressing handle (3) is arranged at one side of the upper part of the casing pipe, the lower end of the pipe is provided with a rubber sleeve (13), one side wall of the pipe is provided with a side connection pipe (16), at least one rubber ring (8) arranged at the outer edge of a piston column (7) is in interference fit with the wall of a compression cavity (9) in the pipe, the upper end and the lower end of a connection rod (4) are respectively connected with the lower end of a movable handle (1) and the upper end of the piston column, and the middle part of the connection rod is positioned in the casing pipe. The side connection pipe is arranged at one side of the pipe, and when an inverted-cone-shaped insertion pipe at the lower part of the rubber sleeve works, foreign matters difficult to clear are separated from a pipeline quickly by virtue of intensity of pressure of running water so that precious time for dredging the pipeline is greatly saved. The powerful plunger is compact in structure and suitable for being used in toilets of a family, a hotel and enterprises.

The invention discloses a steel structure bolt loosening detection robot. The steel structure bolt loosening detection robot includes a detection tail end, a multi-degree of freedom robotic arm and awalking device, wherein the detection tail end is mounted on the walking device through the multi-degree of freedom robotic arm, the walking device provides a walking function for position adjustmentof the detection tail end, the detection tail end includes a substrate, a spring, a magnetic meter holder adsorption device and two piezoelectric ceramic sheet sensors, the spring and the magnetic meter holder adsorption device are fixedly juxtaposed to the bottom of the substrate, one of the piezoelectric ceramic sheet sensors is mounted on the bottom of the spring, the other piezoelectric ceramic sheet sensor is mounted on the bottom of the magnetic meter holder adsorption device, the two piezoelectric ceramic sheet sensors are respectively taken as a driver and a receiver, impedance analysis is utilized to perform bolt loosening detection, the walking device is a crawler walking device, and a permanent magnet strip is arranged on a crawler. The steel structure bolt loosening detection robot is advantaged in that the detection tail end can be driven by the multi-degree of freedom robotic arm to achieve rapid positioning, remote control on the robot can be further achieved for detection, the risk of manual detection is reduced, and detection efficiency is improved.

The invention provides a high-frequency excitation shaking table which comprises a table surface, a bottom plate arranged on the lower portion of the table surface, and a support used for supporting the bottom plate and the table surface, the upper end of the support is connected with the bottom plate through a spring seat, a first vibration motor is fixedly arranged on one side of the bottom plate, and the other side of the bottom plate is fixedly connected with a mass center adjusting block through a connecting plate. A second vibration motor is arranged in the middle of the bottom plate, awater feeding hopper is arranged on one side of the table surface, an ore feeding hopper is arranged at one end of the water feeding hopper, and a plurality of table strips used for screening and caculating ore grains are arranged on the table surface. According to the high-frequency excitation shaking table, the table surface is driven to do reciprocating high-frequency motion in the set direction through synchronous reverse rotation of the two motors, and thus rapid and uniform dispersion of micro-fine ore grains is achieved.

The invention discloses a preparation method of a bioorganic fertilizer for dragon fruit trees, and belongs to the technical field of fertilizer preparation. The preparation method of the bioorganic fertilizer for dragon fruit trees comprises the steps of composting, fermentation, overturning and granulation. The bioorganic fertilizer for dragon fruit trees has the advantages of reasonable formula, completeness in nutrients, simple preparation method, high utilization rate of dragon fruits, and improvement of the soil environment, is an ecologic and environmentally-friendly organic fertilizer, and is suitable for large-area promotion and use.

The invention discloses a gas pipe joint for a gas stove. The gas pipe joint for the gas stove comprises a gas pipe, a front sealing ring, a sealing joint, a middle sealing ring, an ejector rod supporting frame, an ejector rod, an ejector rod spring, a power rod and a rotating rod. The gas pipe is in a cylindrical shape in whole. The front sealing ring is arranged on the inner side of the front ofthe sealing joint. The middle sealing ring is arranged at a middle sealing joint limiting block of the sealing joint. The ejector rod supporting frame is connected with the sealing joint through a rotating shaft. The ejector rod is mounted in the ejector rod supporting frame. The ejector rod spring is mounted between the ejector rod and the power rod. The rotating rod is mounted on the ejector rod supporting frame. The gas pipe joint for the gas stove is simple in structure and scientific and reasonable in design, can quickly help people to connect a gas tank and tighten, improves the efficiency that people accurately tighten the gas pipe joint for the gas stove, further ensures the use safety of gas, meanwhile, reduces the volume space of a gas tank switch, and is convenient to operate.

The invention discloses a biological organic fertilizer for dragon fruit and a preparing method thereof, and belongs to the technical field of fertilizer preparation. Raw materials of the fertilizer include fruit and vegetable shell, egg shell, tea leaves, barnyard manure, bagasse, plant ash, a cake fertilizer, animal stools and urine, domestic waste, ammonium dihydrogen phosphate, aspergillus oryzae, yeast, bacillus subtilis, a mycorrhizal fungi, azotobacter vinelandii, photosynthetic bacterium flora and paecilomyces lilacinus (Thom) Samson. The biological organic fertilizer has a reasonable formula, comprehensive nutrition, and a high utilization rate by dragon fruit, can improve the soil environment, is an ecological environmentally friendly type organic fertilizer and is suitable for large-area popularization and application.

The invention discloses a bolt looseness sensing device based on a piezoelectric traction effect, belongs to the field of mechanical fastener monitoring, and aims to solve problems of complex design,high energy consumption, high cost, low sensitivity and the like in the conventional monitoring technology. The device comprises a connecting end sheet, a spring, a piezoelectric sheet, a metal elastic sheet, a bottom support and a signal processing module, wherein the signal processing module is embedded in the bottom support, a metal elastic piece is vertically arranged on an upper end face of the bottom support, a piezoelectric piece is attached to an upper end of the metal elastic piece, a suspended end of the metal elastic piece is connected with a tail end of a spring, and a connecting end piece is fixedly arranged at a head end of the spring and pressed on a side face of the nut. When the bolt is loosened, the connecting end piece swings along with the nut, the connecting end piecedrives the spring to stretch out and draw back, the traction force generated by stretching out and drawing back of the spring exerts load on the metal elastic piece pasted with the piezoelectric pieceto enable the metal elastic piece to be bent, bending deformation induces the piezoelectric piece to generate piezoelectric signals, and the signal processing module receives the piezoelectric signals to achieve sensing of bolt loosening.

A rapid blow-in method comprises the following steps that (1) an air supply pipeline is pre-buried in an iron notch; (2) the main channel is filled with ramming mass and coke powder; (3) baking the furnace; (4) selecting a furnace opening material; (5) nitrogen cooling; (6) charging with wind; (7) hot air ignition; and (8) quickly introducing coal gas. The method has the beneficial effects that the consumed time is short, the efficiency is high, and the environmental protection and safety problems are reduced; the oven adopts a helical blade hot air shunting table for uniformly shunting hot air, so that the oven baking time is greatly shortened; coke and firewood mixed loading facilitates air supply, facilitates rapid ignition and combustion, makes space for descending of the upper furnace burden, and facilitates rapid loosening of the stock column. Charging with wind has a remarkable effect on drying coke and moisture of a charging material, the blow-in total coke ratio can be reduced by 200-300kg / t, and the phenomenon of material collapse and suspension in the blow-in process of the blast furnace is reduced; and clay gun tapping is omitted during tapping of the iron notch embedded air supply pipeline, so that the tapping time is shortened, and the tapping efficiency is improved. Compared with the conventional technology, the method provided by the invention can shorten the blow-in time by 8-12 hours.

The invention relates to a preparation method of a soil conditioner for blueberry planting, which mainly comprises the following steps: uniformly mixing soybean yellow serofluid and fermented sugar ina container, adding soil yeast, sealing, and carrying out fermentation treatment to obtain fermented yellow serofluid; crushing a cake fertilizer, adding the crushed cake fertilizer into vinasse, anduniformly mixing to form biogas slurry; and uniformly mixing the obtained fermented yellow serofluid with the biogas slurry, and standing to obtain the soil conditioner. The soil yeast is used for fermenting the soybean yellow serofluid, fermentation of the soybean yellow serofluid can be promoted, the soil yeast can also act on the soil, the soil is rapidly loosened, the content of organic matters in the soil is increased, and a soil environment beneficial to blueberry growth is further formed.

The invention discloses bonded boron carbide round pipe cutting and end face grinding equipment which comprises a workbench, an inner supporting pipeline rotating mechanism and a cutting mechanism. The inner supporting pipeline rotating mechanism and the cutting mechanism are installed on the workbench. The cutting mechanism is provided with a circulation cooling system, the inner supporting pipeline rotating mechanism comprises an inner supporting structure for fixing a pipeline to be machined and a first transmission mechanism for driving the inner supporting structure to rotate, the inner supporting structure is connected with an air cylinder to achieve clamping and loosening function, the first transmission mechanism is driven by a first gear motor, the first gear motor is installed onan adjusting plate, the cutting mechanism comprises a cutting blade arranged in a protection cover and a main shaft for installation of the cutting blade, the main shaft is connected with a second gear motor through a second transmission mechanism, the second gear motor is installed on an installation plate, and the lower portion of the installation plate is provided with a lead screw transmission mechanism capable of moving in the X-axis direction and the Y-axis direction. The bonded boron carbide round pipe cutting and end face grinding equipment cuts and grinds a bonded boron carbide roundpipe, and the problems of round pipe clamping and powder splash pollution are solved.

The invention relates to the technical field of cable detection, in particular to cable code writing detection equipment which is characterized by comprising a support, a detection box and a universalmeter, an electromagnet and an installation plate are arranged on the support, the electromagnet is electrically connected with the universal meter, an iron core of the electromagnet is connected with a marking piece, and the installation plate is provided with a marking strip. The electromagnet is powered on to push the marking piece to press and print on the marking strip and leave a mark, therack is further provided with a control base, the control base is provided with an inclined face, the electromagnet is arranged on the inclined face of the control base in a sliding mode, the electromagnet can slide from the upper end of the inclined face of the control base to the lower end of the inclined face of the control base, and the control base is provided with a limiting assembly for limiting sliding of the electromagnet. When the electromagnet is not powered on, the limiting assembly can limit the electromagnet to slide down, and when the electromagnet is powered on, the limiting assembly stops limiting the electromagnet, so that the cable coding detection equipment is convenient for people to judge whether a detected cable leaks paint or not and the number of paint leaking parts.

The invention discloses a water-fixing fertilizer-maintaining method of prone-to-hardening soil and belongs to the field of soil water and fertilizer maintaining. The method includes that after cropsare harvested, a weed layer, a plant ash layer and an earthworm layer are sequentially laid in the prone-to-hardening soil; by using common materials like weed and plant ash easy for peasants to get,organic matter content in the soil can be increased, probability of soil hardening is lowered, input cost of the peasants can be lowered, and income of the peasants is increased virtually; through matched using of beer and soil yeast, number and activity of microorganisms in the soil are increased; through using of earthworm at the same time, porosity of the soil can be improved greatly, and soilhardening caused by soil idling in winter is reduced, so that water-fixing fertilizer-maintaining ability of the soil is improved remarkably, better soil environment is provided for spring ploughing of the coming year, harvest of the peasants is increased, and livelihood development is promoted.

The invention discloses a dry sorting system and a dry sorting technology for a concentrated-phase gas-solid fluidized bed, belonging to the technical field of dry-method mineral processing. According to the dry sorting machine for the concentrated-phase gas-solid fluidized bed, a pre-air distribution chamber is divided into multiple separate single-chambers; a pre-distribution device and an assembly-type easy-to-detach anti-clogging wear-resisting air distribution plate are arranged in each single-chamber; float kicking wheels are longitudinally arranged along the sorting machine, and are used for leading fed materials to move longitudinally along the main machine; a bucket-type discharging machine is integrally arranged in an oblique manner; a mesh bag-type sediment discharging scraper machine is arranged on the lower part of the sorting machine, and plate meshes are supported by scraping plates, so that the mesh bag-type sediment discharging scraper machine is integrally connected onto conveying chains which move parallelly; a horizontal screw conveyor is located at the tail end of the oblique section of the mesh bag-type sediment discharging scraper machine which is located at the sediment discharging end of the main machine; and a float discharging mechanism and a sediment discharging mechanism work separately, so that the operation flexibility of the sorting machine is increased, and the sorting effect is improved. The dry mineral separation equipment is assembled on the same platform, so that the dry sorting system for the concentrated-phase gas-solid fluidized bed is established; the performance is stable; the operation cost is low; the operation is easy; the dry sorting system is environment-friendly and high-efficient; and problems in dry sorting and quality improving of minerals with different densities are solved.

The invention discloses an electric tool for screwing a screw. The electric tool comprises a transmission box with a transmission cavity, a rotating cylinder is rotatably connected to the lower end face of the transmission box, a screw sleeve is fixedly connected to the lower end face of the rotating cylinder, a sleeve cavity with a downward opening is formed in the screw sleeve, and a plurality of symmetrical clamping block cavities are formed in the sleeve cavity in an annular array and communicated mode. Sleeve blocks are horizontally and slidably connected into the multiple clamping block cavities, sleeve springs are fixedly connected between the end faces of the sides, away from the sleeve cavities, of the multiple sleeve blocks and the side walls, away from the sleeve cavities, of the multiple clamping block cavities, a vibration cavity is formed in the rotating cylinder, and a main power shaft and a crankshaft are arranged in the vibration cavity. The bottom end of the outer circle face of the main power shaft is fixedly connected with a driving bevel gear. When it is hard to screw out the screw, the cam pushes the swing rods on the left side and the right side to push the impact block to impact two sides of the screw sleeve, so that vibration on the left side and the right side is generated at the joint of the screw, and the screw difficult to screw out can be quickly loosened.

The invention discloses dredging, collecting and reprocessing equipment for water conservancy project river regulation, and relates to the technical field of water conservancy projects, in particular to the dredging, collecting and reprocessing equipment for water conservancy project river regulation. The equipment comprises a shell, wherein an inner container is fixedly connected in the shell, and a filter shell is fixedly connected to the top of the shell. According to the dredging, collecting and reprocessing equipment for water conservancy project river regulation, a rotating outer rod is fixedly connected into a limiting frame, a cylindrical hole is formed in the rotating outer rod, a bearing is movably connected into the hole in the rotating outer rod, and a smashing inner rod is fixedly connected to the inner side of the bearing; and meanwhile, stirring blades which are symmetrically distributed are fixedly connected to the exterior of the smashing inner rod, and a rhombic slicing head is fixedly connected to the bottom of the smashing inner rod, so that it can be guaranteed that the device can quickly loosen the sludge condensed at the bottom of a river channel, and the problem that an existing device cannot quickly treat the condensed sludge is solved.

The invention discloses a sucker rod cleaning device and belongs to the technical field of oil well equipment maintaining.The sucker rod cleaning device comprises a bearing frame, a lead screw lifting machine, a connecting device, a flushing device, a heating device and the like, a sucker rod is vertically hung through the lead screw lifting machine, so that oil dirt and dirty water in the cleaning process can be directionally collected under the gravity effect, and then the sucker rod is cleaned; inconvenience caused in the traditional horizontal cleaning process is avoided, the flushing device can automatically flush the sucker rod through a high-pressure pipeline and a high-pressure spray head, and surface oil dirt and oil sludge can be efficiently removed by further combining with a heating device. Compared with existing equipment, the sucker rod polishing device has the advantages of being high in automation degree, easy to operate, high in dirt-removing power and the like, and damage of a mechanical polishing method to a sucker rod body is avoided.

The invention discloses a hydraulic high-frequency forcible hammer for drilling and unblocking, which comprises a valve assembly, a downstroke piston assembly, an upstroke piston assembly, and a force transmission assembly. The hydraulic high-frequency impactor for drilling and unblocking of the present invention provides the high-frequency downward impact of the down-pressing drilling tool and the high-frequency upward impact of the lifting drilling tool required for unblocking of the drill tool near the drill bit in drilling and coiled tubing drilling and milling, which is conducive to loosening The stuck pipe caused by the collapse of the open hole wall makes the rock blocks between the stuck drill tool and the well wall quickly broken and loosened, especially suitable for the release of large diameter near-bit tools such as rotary steering.

The invention belongs to the technical field of glass fiber production, particularly relates to glass fiber production equipment and a production process thereof, and provides the following scheme that the glass fiber production equipment comprises a cleaning box, supporting plates are fixedly connected to the outer walls of the two sides of the cleaning box, and air cylinders are fixedly connected to the outer walls of the tops of the two supporting plates at equal intervals; the outer wall of the top of each air cylinder is fixedly connected with a connecting frame. Through the arrangement of the sliding rail, the sliding rod, a spacer, a shaking spring and an arc-shaped sheet plate, in the process that the adjusting air cylinder drives the placing frame to rise and fall repeatedly, a water body drives the shaking spring on the spacer to shake, and the shaking spring drives an impact ball on the arc-shaped sheet plate to impact a raw material, so that soil on the raw material is quickly loosened; and meanwhile, before the raw materials are taken out, the pull rod is pulled to drive the sliding rod to slide out of the sliding rail, the spacer is taken out, and the convenience of taking the raw materials is improved.

A bolt loosening sensing device based on piezoelectric traction effect belongs to the field of mechanical fastener monitoring. The invention solves the problems of complex design, high energy consumption, high cost and low sensitivity of the existing monitoring technology. The device of the invention comprises a connecting end piece, a spring, a piezoelectric piece, a metal shrapnel, a bottom bracket and a signal processing module; the signal processing module is embedded in the bottom bracket, the metal shrapnel is vertically arranged on the upper end surface of the bottom bracket, and the piezoelectric piece is attached to the metal shrapnel The upper end of the metal shrapnel is connected to the tail end of the spring, the head end of the spring is fixed with a connecting end piece, and the connecting end piece is pressed on the side of the nut; when the bolt is loose, the connecting end piece swings with the nut, and the connecting end piece drives the The spring expands and contracts, and the traction force generated by the spring expansion applies a load to the metal shrapnel attached to the piezoelectric sheet to make it bend, and the bending deformation induces the piezoelectric sheet to generate a piezoelectric signal, and the signal processing module receives the piezoelectric signal to realize the perception of bolt loosening.

The invention provides a mechanical arm. The mechanical arm comprises a main seat, a driving motor, a first belt pulley, a belt, a second belt pulley, a screw, a screw seat, a screw rod nut, a movingclamp, a fixing clamp, a guide rail and a sliding block, wherein the driving motor is fixedly arranged on one side of the upper end of the main body seat, a rotating shaft of the driving motor is fixedly and synchronously rotated with the first belt wheel, the second belt wheel and the screw rod are fixed to realize synchronous rotation, the other end of the screw rod is rotationally connected with the screw rod base, the screw seat is fixedly arranged on the other side of the lower end of the main body seat, the lower end of the screw rod nut is fixed with the movable clamp, the screw rod isin threaded connection with the screw rod nut, the two sides of the upper end of the moving clamp are provided with the sliding blocks, and the two sides of the lower end of the main body seat are provided with the guide rails which are in sliding fit with the sliding blocks. The design is ingenious, the object can be quickly clamped or loosened, the operation is convenient, and the clamping forceis large.

The invention relates to the technical field of fasteners, and discloses a self-locking spiral thread fastener which comprises a bolt, a gasket and a nut, the gasket is connected to the bolt in a sleeving mode, the nut is in threaded connection with the bolt, and a fastening mechanism for a self-locking spiral line is arranged at the lower end of the nut. The fastening mechanism comprises a cylindrical sleeve, a clamping block, a connecting spring, a shifting block, a metal clamping rod, an annular baffle, an extrusion bag, a sealing bag and annular rubber. The cylindrical sleeve is fixedly installed at the lower end of the nut. Through extrusion of the clamping block, the nut and the bolt are more tightly fixed, the situation that the bolt and the nut are loosened due to shaking of a ship body is effectively prevented, the purpose of automatic locking is achieved, a device, fixed by the bolt and the nut, on a huge wheel is firmer, and the danger occurrence probability is reduced; and through the expandable sealing bag, damp air on the sea surface is effectively isolated, the degree of thread rusting at the matched position of the bolt and the nut is reduced, and the bolt and the nut are prevented from being stuck.

The invention discloses a method for quickly screwing out a screw. The method comprises the following steps that the top of the screw which is difficult to screw out is extended into a screw sleeve of an electric tool, and the inner wall of the screw sleeve is attached to the screw; a main motor of the electric tool is started, so that a motor shaft is driven to rotate, the screw sleeve is driven to rotate through the motor shaft, and the screw is screwed out; if the screw is still difficult to screw out, a main power shaft is driven to rotate through rotation of the motor shaft, a cam is driven to rotate through rotation of the main power shaft, sliding rods on the left side and the right side are pushed to slide left and right through rotation of the cam, through left-right sliding of the left-right sliding rods, the top ends of left-right swing rods are driven to swing left and right through rotary connection of left-right rotating shafts, and meanwhile through hinge joint of left-right connecting rods, the bottom ends of the left-right swing rods are driven to swing left and right, so that left-right impact blocks are driven to impact the left-right end faces of the screw sleeve, the vibration is generated, the screw is driven to vibrate, so that the connection of the screw is loosened; and the screw can be screwed out continuously through continuous rotation of the screw sleeve, and when the screw is loosened through vibration, the screw is screwed out through the screw sleeve.