3791results about How to "Reduce harm" patented technology

The invention discloses an anti-allergy soothing composition as well as a preparation method and cosmetics thereof. The anti-allergy soothing composition comprises the following components in percentage by mass: 2%-8% of a cactus extract, 1%-5% of a radix scutellariae root extract, 0.5%-3% of a Chinese herbaceous peony root extract, 2%-5% of a radix ophiopogonis root extract, 2%-5% of an oat bran extract, 40%-50% of butanediol and the balance of water. The composition has good anti-allergy and soothing effects, when the composition is applied to skin care products and cosmetics, the cosmetics can have the good anti-allergy and soothing effects, and the skin care products and the cosmetics can have good universality. Meanwhile, the preparation method of the anti-allergy soothing composition is simple and easy to implement and easy to popularize and use.

The invention discloses hip cream as well as a preparation method and application thereof, and belongs to the technical field of infant care products. The hip cream comprises a phase A, a phase B and a phase C, wherein the phase A comprises caprylic capric triglyceride, olive oil, camellia-seed oil, cera alba, sunflower seed oil and white ozocerite; a phase B: trihydroxy stearin; a phase C: VE acetate, folium artemisiae argyi essential oil, Roman chamomile, tea tree oil and double purple oil; and phase D: simmondsia chinensis seed oil. According to the invention, by optimizing the components and dosage in the hip cream, the prepared hip cream has good anti-inflammatory, soothing, moisturizing and skin repairing effects, the problems of red buttocks of newborns and skin ulceration, water loss, chapping, desquamation and the like caused by the red buttocks of the newborns are reduced, and meanwhile, the use of medicaments such as erythromycin ointment and the like is reduced. Meanwhile, the surface of the paper diaper can be coated with the hip cream to obtain the paper diaper containing the hip cream coating, the repairing and other effects of the hip cream are utilized, meanwhile, the paper diaper containing the hip cream has better soft feeling and smooth feeling, and damage caused by friction of the paper diaper is reduced.

The invention relates to the technical field of agricultural micro-ecological application, and discloses a method for improving the growth and drought resistance of oats by using arbuscular mycorrhizal fungi, the arbuscular mycorrhizal fungi having a close symbiotic relationship with the oats are selectively utilized, and the symbiotic relationship between the arbuscular mycorrhizal fungi and the oats is established in a condition control mode. Oat growth is promoted, and drought adaptability is improved. The AM fungi used in the method are selected from rhizosporidium intraradices or glomus mosseae, corn or trifolium repens is taken as a host, the two AM fungi are propagated in a propagation medium respectively, then two arbuscular mycorrhizal fungi inoculants and oat are co-cultured in a symbiotic culture medium respectively, and the two arbuscular mycorrhizal fungi inoculants and oat are co-cultured in a symbiotic culture medium respectively. An effective way for improving beneficial symbiosis of AM fungi and hosts under adverse conditions is provided, the infection symbiosis relation of the AM fungi to host plants is improved manually, and the yield of dry land oats is increased.

The invention relates to the field of medical equipment, and discloses an intracavity radiofrequency ablation system. The system includes a radio frequency generator, a catheter with a heating element, a pressure sensor, and a temperature sensor, a processor, and a display. By monitoring the temperature and the pressure in real time and dynamically adjusting the radio frequency energy output power, the safety and the accuracy of the treatment process are ensured. The system can automatically adjust treatment parameters according to the real-time contraction condition of the cavity tissue, prevent overheating, reduce damage to normal tissue, provide visual tissue contraction feedback and improve the treatment effect.

The invention relates to the technical field of power-assisted robots, in particular to a self-adaptive control lower limb hydraulic power-assisted exoskeleton robot system which comprises a waist supporting device, a leg supporting device, a foot supporting device, a hydraulic power-assisted assembly, an attitude sensor, a lower limb force sensor, a wearable electromyogram sensor, a step obtaining module and a data analysis module. The system can intelligently adjust the output power of the hydraulic power assisting assembly according to the motion posture of the exoskeleton, the pressure data of the foot supporting device and the wearing target muscle state so as to provide proper walking assisting power and bearing support, and the system can further conduct secondary adjustment and fatigue alarm by monitoring the pace frequency and the muscle fatigue degree in real time. The exoskeleton assisting power output power in the carrying process is gradually adjusted according to the comparison result between the weight of the wearing target and the weight of the to-be-moved object, so that assisting power provided by the exoskeleton robot is effectively matched with the weight of the to-be-moved object when the wearing target carries the object.

The invention relates to the technical field of metal material protective coatings, in particular to high-wear-resistance and corrosion-resistance mechanical steel and a preparation method thereof. Comprising the following steps that S1, the surface of a mechanical steel base body is pretreated, and pretreated mechanical steel is obtained; s2, a base coat and a metal layer are sequentially arranged on the surface of the pretreated mechanical steel; S21, base coat powder is sprayed to the surface of the pretreated mechanical steel through the high velocity oxy-fuel spraying technology, and the base coat is obtained; s22, metal layer powder is sprayed on the surface of the priming layer through the high velocity oxy-fuel spraying technology, and a metal layer is obtained; s3, the surface of the metal layer is evenly coated with a reinforcing coating in a brushing mode, and after drying and curing, a coating layer is obtained; and the high-wear-resistance and corrosion-resistance mechanical steel is prepared.

The invention relates to multifunctional self-adaptive laser metal 3D printing equipment and a control method thereof.The device comprises a spray head bottom plate and a laser cladding spray head, the laser cladding spray head comprises a spray nozzle used for outputting powder and a pipeline connected to the spray nozzle and used for conveying the powder, and a first converging assembly is installed on the spray head bottom plate; the end, away from the nozzle, of the pipeline is arranged on the inner side of the first gathering assembly, the powder is magnetized when passing through the first gathering assembly in the pipeline, and a gathering processing assembly used for repelling the magnetic powder is arranged on the outer side of the nozzle. Through the design of the first gathering assembly and the gathering processing assembly, powder is magnetized through the first gathering assembly during conveying, then the magnetized powder and the gathering processing assembly generate like-pole repulsion acting force when the powder is sprayed out of the nozzle, the powder is promoted to be gathered together to form a powder beam, powder divergence and irregular arrangement are reduced, and the powder quality is improved. And the position precision and the forming quality and precision of powder conveyed to the molten pool are improved.

The invention discloses a mountain tunnel waterproof and drainage structure convenient to maintain and replace and a construction method.The waterproof and drainage structure comprises a primary support, a secondary lining, detachable water guiding and drainage structures and a tunnel bottom drainage structure, an annular groove is reserved in a secondary lining construction joint, and the water guiding and drainage structures are intensively arranged; the water guiding and draining structure comprises a water draining pipe, an annular water draining groove, a water-wave-proof steel pattern plate, a heat preservation material and a decorative plate which are sequentially arranged from outside to inside. The bottom drainage structure comprises transverse drainage ditches and a central drainage ditch. According to the tunnel waterproof and drainage structure, the underground water behind the tunnel lining is basically drained through the capacity of the water drainage pipe for actively reducing the underground water, the underground water is prevented from acting on the supporting structure, permeation of the underground water into the supporting structure is reduced, the construction method is simple and convenient, and the construction quality is easy to control; during tunnel operation and maintenance, desilting, maintenance and replacement are facilitated, and the durability of the tunnel is improved.

The invention provides a smart city traffic information system based on a 5G network, and relates to the technical field of data processing, and the system comprises a digital traffic processing module which is used for collecting and analyzing the operation data of various traffic facilities and vehicles in real time so as to recognize a traffic flow mode, predict a traffic state, obtain an analysis result, and according to the analysis result, determine the traffic flow mode; traffic signals are automatically adjusted, and traffic flow is optimized; and the digital government affair cooperation module is used for automatically acquiring and distributing update information of traffic policies and laws and regulations, automatically processing traffic violation behaviors, and collecting and analyzing feedback information of the public for the traffic policies to obtain an analysis report. According to the system, a plurality of digital modules are integrated, real-time collection, intelligent analysis and efficient management of traffic information are realized, the traffic operation efficiency and safety are improved, the public participation degree and satisfaction degree are enhanced, and intelligent, collaborative and sustainable development of urban traffic is effectively promoted.

The present invention relates to the technical field of building walls, and discloses a pressure relief explosion-proof wall structure, including an embedded box embedded in the wall, an outer sealing plate is rotatably provided on the left side plate of the embedded box, and a slide plate is slidably provided on the right side plate, an inner sealing plate corresponding to the outer sealing plate is rotatably provided on the slide plate, and a connecting rod is rotatably connected between the outer sealing plate and the inner sealing plate; an extension plate is integrally provided at the end of the slide plate, and a limit plate is elastically slidably inserted on the embedded box. The present invention can achieve a pressure relief effect to reduce the probability of damage to the wall and the effect of personal injury, and can also keep the outer sealing plate and the inner sealing plate in an open state when there is no explosion risk and ventilation is required, so as to achieve indoor ventilation and play the role of a ventilation window, thereby eliminating the setting of the ventilation window in the prior art, reducing the number of reserved installation openings in the wall, and enhancing the strength of the wall.

The invention provides a thrombus removing device which comprises an outer catheter, a blood vessel expansion mechanism, a developing tube and a suction assembly, the blood vessel expansion mechanism is installed in the outer catheter in a sliding mode, and the suction assembly used for sucking and removing broken thrombus is connected to the outer catheter; the blood vessel expansion mechanism comprises an expansion rod, a rotating sleeve, an outer sliding sleeve and an arc-shaped cutter, the arc-shaped cutter is hinged between the expansion rod and the rotating sleeve, the expansion rod is hinged to the outer sliding sleeve, the rotating sleeve is slidably installed in the outer sliding sleeve, and the outer sliding sleeve is slidably installed in the outer catheter; one end of the outer sliding sleeve is connected with a first driving assembly for driving the arc-shaped cutter to open; a front net basket is arranged in the developing pipe, a core pushing pipe for pushing the front net basket out of the developing pipe is arranged in the developing pipe, and one end of the developing pipe is connected with a second driving assembly for driving the core pushing pipe. The thrombus removing device is scientific and reasonable in structural design, convenient to operate, good in using effect, small in damage to blood vessels, good in thrombus removing effect and capable of being used and popularized.

The invention discloses a prostate stent and a stent conveying device, and the prostate stent comprises a stent body which comprises a plurality of stent wires; the diaphragm comprises a diaphragm sleeve and a diaphragm piece, the diaphragm sleeve is arranged on the support wire in a sleeving mode, the diaphragm piece is an elastic sheet, the diaphragm piece is in a bent wave-shaped loose state, and when the support wire is formed by twisting a plurality of strands of flat wires into a twisted shape, the diaphragm material permeates into twisted grooves and gaps between wire materials on the support wire; and drug coatings are arranged on the outer surfaces of the stent body and the diaphragm. The invention further discloses a stent conveying device. Compared with the prior art, the problem that an existing traditional prostate stent is difficult to take out after an operation is solved.

The invention relates to the technical field of aircraft ejection seat detection, in particular to a detection test bed for an aircraft ejection seat and a test method thereof. According to the technical scheme, the device comprises a test external assembly, a test seat adjusting and clamping assembly is installed in the test external assembly, two seat clamping assemblies are installed on the two sides of the test seat adjusting and clamping assembly, and a changeable detection assembly is installed on the top of the inner wall of the test external assembly. The inclined rod drives the positioning type spring through the cross positioning plate to give push-pull force to the sensor connected with the positioning type spring to obtain X-axis data, then the inclined state of the aircraft ejection seat during ejection is recorded in more detail, then the posture problem of the aircraft ejection seat during ejection is comprehensively known in cooperation with the variable detection assembly, and the safety of the aircraft ejection seat is improved. Therefore, the accuracy of test data of the aircraft ejection seat is further improved, and problems occurring when the aircraft ejection seat is put into production are reduced.

The invention provides a modified vermiculite-based lithium ion battery fire extinguishing agent and a preparation method thereof.The modified vermiculite-based lithium ion battery fire extinguishing agent is prepared from, by mass, 5-30% of LDHs / vermiculite compound, 0.5-3% of stabilizer, 0.5-3% of dispersing agent, 2-4% of dispersing aid, 0.5-3% of thickening agent, 0.1-1% of preservative and the balance water, the sum of the mass percentages of all the raw materials is equal to 100%. The fire extinguishing agent prepared by the invention has both physical and chemical fire suppression effects, solves the problem that an original vermiculite-based fire extinguishing agent only depends on physical fire suppression and is low in fire extinguishing efficiency, and can quickly extinguish a fire of a lithium ion battery and effectively suppress re-combustion of the lithium ion battery.

The invention discloses a balloon catheter for releasing medicine in a human body cavity. The balloon catheter comprises an outer balloon and an inner balloon located in the outer balloon. The diameter of two ends of the outer balloon is larger than that of the middle; a plurality of rows of semi-through holes are formed in the outer balloon, each row of inner semi-through holes are formed in the longitudinal direction of the outer balloon, and a cutting mark is arranged between every two adjacent semi-through holes in each row; and the inner balloon is a three-stage expansion balloon. The double-layer balloon structure is adopted, in the process that the internal pressure of the inner balloon is gradually increased to push the outer balloon to be gradually expanded, two treatment means of medicine spraying and dilation are executed at the same time, and therefore the treatment effectiveness is improved; the use efficiency of the medicine can be ensured while the medicine can accurately act on the focus; compared with an existing treatment means, the application is wider in application range and non-invasive in treatment, foreign matter does not need to be implanted, an instrument does not need to enter a human body cavity for multiple times, and discomfort of a patient during treatment can be greatly reduced.

The invention discloses an efficient light capture type new energy photovoltaic regulation and control system applied to the solar photovoltaic field, and the system effectively improves the light capture efficiency through adding a power generation efficiency monitoring module and a meteorological condition monitoring module on the basis of an existing automatic light tracking photovoltaic panel. When the photovoltaic panel is influenced by dust, rain and snow and the light harvesting efficiency is low, the power generation efficiency monitoring module triggers the self-cleaning module to adjust the photovoltaic panel to be in a horizontal state, then the photovoltaic panel rotates, and the dust, rain and snow covering the photovoltaic panel are scraped off by a scraping strip through centrifugal force during rotation, so that the light harvesting efficiency is effectively improved; when the weather condition monitoring module monitors strong wind and hail weather, the self-protection module adjusts the photovoltaic panel to be in a horizontal or vertical state, so that the contact area between the wind and hail and the photovoltaic panel is reduced, damage to the photovoltaic panel is effectively reduced, self-cleaning and self-protection of the photovoltaic panel are achieved, and the service life of the photovoltaic panel is prolonged. Therefore, the light harvesting efficiency and the service life of the photovoltaic panel are effectively improved.

The invention discloses a sample pretreatment method for measuring total carbon in titanium tetrachloride and a method for measuring total carbon in titanium tetrachloride, and belongs to the technical field of analytical chemistry. The sample pretreatment method comprises the following steps: carrying out the whole process under the protection of inert gas, adding a titanium tetrachloride sample to be detected into a strong alkali solution containing a catalyst, carrying out sufficient hydrolysis, and carrying out evaporation to dryness to obtain a solid matter of the sample to be detected after hydrolysis. The method for measuring the total carbon in the titanium tetrachloride comprises the following steps: preparing a to-be-measured sample solid matter into to-be-measured sample powder, measuring the total carbon content of the to-be-measured sample powder through a total carbon analyzer, and converting to obtain the total carbon content in a to-be-measured titanium tetrachloride sample. The method can effectively solve the problems that the final measurement result is low due to volatilization and loss of part of components during sample pretreatment for total carbon measurement in the titanium tetrachloride in the prior art; the analysis condition of the whole determination method is harsh, the detection cost is high, and the quality control is difficult.

The invention relates to the field of soil monitoring, and discloses a soil water seepage early warning device for geotechnical engineering, comprising a penetration tube, of which a plurality is provided; a pumping mechanism, which is arranged in the penetration tube, and the plurality of pumping mechanisms are connected in sequence; an embedding mechanism, which is arranged in the penetration tube, of which a plurality is provided; and a packaging cover, which is connected to the topmost penetration tube, and one side of which is connected to an alarm mechanism. The invention can adapt to monitoring at different depths and different work needs, and can realize multi-point monitoring and early warning display, thereby ensuring the stability and timeliness of the monitoring process and ensuring the progress of the monitoring.

The invention relates to the technical field of plastic crushing, in particular to a plastic product recovery device which comprises a feeding bin and a crushing bin and further comprises multiple sets of clamping plates located in the feeding bin. The crushing unit is arranged in the crushing bin and is used for crushing plastic bottle bodies and plastic bottle caps, the bidirectional driving unit is arranged in the feeding bin, the clamping plates are arranged on the bidirectional driving unit, and the bidirectional driving unit is used for driving the two clamping plates to clamp the plastic bottles; according to the plastic product recovery device, the plastic bottles are usually made of different plastic materials, the physical and chemical properties of the materials are different, the quality of regenerated plastic can be reduced through mixed recovery, and the quality of the regenerated plastic can be improved by separating bottle bodies from bottle caps. And it can be ensured that different types of plastics are more effectively recycled and treated, and therefore the purity of the recycled plastics is improved.

The present invention belongs to the field of flexible electronics, and specifically is a flexible polymer ultrasonic probe. The flexible polymer ultrasonic probe of the present invention is a multi-layer structure, which includes a shielding layer, a backing layer, an upper electrode, a piezoelectric layer, a lower electrode, a matching layer, and a coupling layer from top to bottom; all functional layers are made of polymers and their composite materials, have very good flexibility, and can withstand complex deformations such as bending and twisting. The flexible polymer ultrasonic probe can emit ultrasonic waves under the excitation of electrical signals as an ultrasonic transmitting unit, and can also collect ultrasonic signals as an ultrasonic receiving unit. The flexible polymer ultrasonic probe can be made into a patch for industrial flaw detection of irregular surface objects and long-term health monitoring of the human body. For example, based on the ultrasonic Doppler principle, long-term continuous monitoring of blood flow velocity in human blood vessels can be achieved.

The invention discloses an automatic experiment method capable of covering more reaction types, and belongs to the technical field of chemical synthesis. The unit operation is divided into material transmission (solid-liquid-gas feeding), heat transfer (evaporation and condensation), treatment processes (distillation, extraction and adsorption) and thermal processes (temperature, pressure and liquefaction) according to chemical operation units. All equipment and mechanisms are operated, the accuracy of feeding, reaction and the like can be kept, and the conditions of cross contamination and work errors are reduced; the device has the advantages that the device is simple in structure and convenient to operate, harm to experimenters caused by toxic substances can be effectively reduced without manual operation, all-weather use can be achieved through programs and equipment, a Python instruction can be directly copied and used, different reactants can be prepared according to different requirements, and compared with labor, the device has the advantages that the cost is lower, and benefits are higher.

The invention provides an implantable positioning stimulation device, and relates to the technical field of medical instruments. The implantable positioning stimulation device is used for being implanted into the body of a target object for a long time and comprises at least one electrode, each electrode comprises at least one contact, and each contact is a first contact used for collecting electroencephalogram signals or a second contact used for collecting cerebral blood flow signals; the nerve stimulator is configured to obtain an electroencephalogram signal and / or a cerebral blood flow signal, determine at least one lesion area according to the electroencephalogram signal and / or the cerebral blood flow signal, and determine stimulation information according to the at least one lesion area; and controlling the at least one contact to output a stimulation signal according to the stimulation information so as to perform nerve stimulation on the at least one lesion area. According to the embodiment of the invention, the positioning function of the lesion area can be realized, nerve stimulation can be carried out on the lesion area, the whole operation can be completed through one operation, the operation frequency is reduced, and the injury to a patient is reduced.

The invention discloses Burkholderia gladioli HM-72 and application thereof, the Burkholderia gladioli HM-72 is preserved in China Center for Type Culture Collection on July 13, 2023, the preservation address is Wuhan University, Wuhan, No. 299, eight road, Wuchang District, Wuhan, Hubei, and the preservation number is CCTCC NO: M20231291. The strain is high in Pb stress resistance, and has the capability of partially dissolving phosphorus and producing siderophores. After the strain is applied to the Pb-polluted soil, the migration rate of Pb can be improved, the removal of Pb in the soil is accelerated, the Pb is accumulated in the overground part of the enrichment plant, the problem of repairing the lead pollution of the soil is solved, meanwhile, the strain can inhibit the growth of pathogenic fungi, the growth promoting and bacteriostasis characteristics of the strain can provide favorable conditions for the growth of the enrichment plant in a high-lead environment, and the application prospect is wide. The biomass accumulation is promoted, and the method has an application prospect in heavy metal polluted environment restoration.

The invention discloses an aquatic sphingomonas and its application in degrading shrimp feces, belonging to the field of microorganisms. The invention separates an aquatic sphingomonas (Sphingomonas aquatilis) from the water of a small shed shrimp breeding pond, and the preservation number is GDMCC No: 64330. The strain ferments and degrades shrimp feces on a fermentation medium with shrimp feces as the only nutrient, and the number of live bacteria in the fermentation liquid is 5.0×10 7 cfu / mL, and the degradation rate of insoluble solids in feces filtration residue reached 50%; the strain can also degrade 30g / L of insoluble solids in shrimp feces to 15g / L within 48-72h, which proves that the strain has excellent shrimp feces degradation ability, can significantly reduce the content of shrimp feces in aquaculture water, and reduce the damage of shrimp feces to shrimp, providing new ideas for the development of safe and ecological purification agents.

The invention belongs to the technical field of power transmission line inspection, and discloses an intelligent bird accidental collision prevention device and method for an overhead line. The method comprises the following steps: collecting a video stream of bird activities around a power transmission line in a visual range; intercepting the video stream into a plurality of to-be-recognized pictures according to frames, and recognizing whether bird images exist in the to-be-recognized pictures or not; when the bird image is recognized, a first control signal is sent out, otherwise, a second control signal is sent out; when the first control signal is received, the bird blocking module is started to emit ultraviolet light beams to block birds; and in the second control signal, the bird blocking module is closed to save power. In the prior art, an anti-bird-mistaken-collision warning mark or warning ball is installed on a ground wire or a ground wire, power failure is needed to install the anti-bird-mistaken-collision warning mark or warning ball, the anti-bird-mistaken-collision warning mark or warning ball is limited by the fact that a power failure plan is difficult to arrange, and compared with an installation device on an iron tower, the risk coefficient of the installation device on the wire is greatly increased, and the problem can be effectively solved by adopting the anti-bird-mistaken-collision warning mark or warning ball. The effects of protecting rare birds, improving operation safety and providing message results are achieved.

The invention discloses a segmented self-destruction rain enhancement and hail suppression rocket controlled by a time schedule controller, and relates to the technical field of artificial rain enhancement and hail suppression rockets. The device comprises a catalysis bin assembly, an engine assembly and an empennage assembly, and the catalysis bin assembly, the engine assembly and the empennage assembly are connected through reducing sleeve assemblies. An explosion self-destruction device is adopted as a safe landing device, a segmented self-destruction device is arranged in a rocket body engine and a tail segment assembly in advance, a time schedule controller outputs an ignition signal according to binding information, an empennage assembly, an engine assembly and a catalytic bin assembly are exploded into floccules not larger than 100 g and fall onto the ground, self-destruction of all the assemblies is reliable, and the safety of landing is guaranteed. The rocket body wreckage preventing device can effectively reduce damage of rocket body wreckage to personnel, buildings, farmlands, livestock and the like, any one of the ignition loops of the time schedule controller does not affect performance of other loops during working, fire spurting is avoided, space is saved, and the function is reliable.

The invention relates to the technical field of building construction equipment, in particular to a steel bar cutting device for buildings. The reinforcing steel bar cutting device for the building is provided with a safety baffle and has an auxiliary limiting function to prevent the reinforcing steel bars from cracking. A steel bar cutting-off device for construction comprises a steel bar cutting-off machine, the steel bar cutting-off machine is provided with a fixed cutter holder and a movable cutter holder, the movable cutter holder is controlled through a rotary control rod, the steel bar cutting-off machine further comprises a supporting seat, an auxiliary clamp a, an auxiliary clamp b and the like, the supporting seat is arranged on the steel bar cutting-off machine, and the end face of the supporting seat is consistent with the horizontal height of the fixed cutter holder and the horizontal height of the movable cutter holder. The auxiliary clamp a and the auxiliary clamp b are oppositely connected to the supporting base in a sliding mode. After a steel bar is put into the steel bar cutting machine, the rear end of the steel bar can press the conical bearing platform to move downwards, the conical bearing platform pushes the transmission block to move back to back, then the safety door is driven by the transmission assembly to move oppositely, and the safety door can block the steel bar and prevent the steel bar from cracking to injure workers when the steel bar is cut into sections.

The invention provides a powder packaging device and iron phosphate powder packaging equipment thereof. The powder packaging device comprises a support with a negative pressure pump, a material tank, an internal structure of the material tank, a packaging bag opening clamping and adjusting mechanism and a closed packaging mechanism. The material tank is divided into a feeding bin and a storage bin and is provided with a dust filter cartridge, a spiral conveying rod and other parts, and it is guaranteed that powder smoothly enters the storage bin. A packaging bag is automatically clamped and opened by the eccentric clamping shaft and the suction cups on the rhombic frame, and powder filling is facilitated. And after filling is completed, the packaging bag is moved into the fixed cover body, air in the bag is exhausted in an inflation extrusion mode, and heat sealing treatment is conducted through an electric heating sealing strip. In addition, the device is provided with auxiliary functions such as a weighing sensor, a dust removal vibration motor and a spiral dust settling sheet, and a dust removal ring and valve disc mechanism used for controlling opening and closing of a bag opening. According to the powder packaging machine, the powder packaging efficiency and environmental protection performance are improved, the packaging process is simplified, the equipment cost and the space requirement are reduced, and the powder packaging machine is particularly suitable for packaging of powder such as iron phosphate.

The invention discloses a convenient-to-adjust welding workstation for hardware machining, and relates to the technical field of adjusting welding, the convenient-to-adjust welding workstation for hardware machining comprises an equipment frame, a welding mechanism is fixedly mounted on the outer wall of the equipment frame, a first motor is fixedly mounted on the surface of the equipment frame, and the convenient-to-adjust welding workstation for hardware machining further comprises a clamping device; wherein the clamping device comprises a rotating rod, a fixing plate, a rotating pipe, an electric push rod, a clamping plate, a large gear, a second motor, a connecting rod, a circular plate and a small gear, and the rotating rod is fixedly installed at the output end of the first motor. The hardware is fixed in the welding process, the situation that the hardware is damaged due to the fact that the hardware shakes in the welding process and falls off can be prevented, meanwhile, the non-welded side is rotated, the hardware can be adjusted to the optimal position more easily, and unnecessary torsion and stretching are reduced.

The utility model provides a lifting mechanism of a lifter, which relates to the technical field of lifters and comprises a base, two mounting racks are fixedly mounted at the top of the base, and a top plate is fixedly mounted between the tops of the two mounting racks. When the elevator works, a common motor drives the worm gear to rotate through the worm so that the chain can drive the movable plate to ascend, and due to the fact that the worm gear and the worm are provided with self-locking structures, when the elevator breaks down, the worm gear is locked through the worm so that the movable plate can be prevented from rapidly falling off. Therefore, personal injury and cargo damage caused by falling of the elevator from a high place are greatly reduced, the probability of accidents is reduced, time and labor cost generated by rescue is reduced, working efficiency is effectively improved, when the movable plate falls, the brake motor can be rapidly closed, the threaded rod is prevented from continuing to rotate, and the safety of the elevator is improved. The two static threaded rods can brake the movable plate when the chain is broken and falls off, and the reliability of the device can be effectively improved through the two braking modes.