643results about How to "Guaranteed contact" patented technology

The invention provides a floating type marine hydrology real-time monitoring device, and belongs to the technical field of marine hydrology monitoring. The floating type marine hydrology real-time monitoring device comprises a buoy, a bracket, a monitoring mechanism, a cleaning mechanism and an equipment box, wherein the bracket is fixedly mounted on the surface of the buoy; a sampling mechanism is mounted in an inner cavity of the equipment box and is used for replacing a water sample in the equipment box. The monitoring mechanism is arranged, the sea surface condition and the sea surface wind speed can be monitored through a camera and a wind speed sensor, the seawater salinity and the seawater solubility are monitored in real time through a conductivity sensor and an optical dissolved oxygen sensor, and the conductivity sensor and the optical dissolved oxygen sensor are arranged in the inner cavity of the equipment box, so that the sea surface condition and the sea surface wind speed can be monitored in real time. A filter plate is arranged at the bottom of the equipment box, so that impurities and marine organisms in seawater are prevented from being attached to the surfaces of the conductivity sensor and the optical dissolved oxygen sensor, and the measurement precision is ensured.

The utility model discloses a fixture for a special-shaped tool. The fixture comprises a supporting seat, the clamping mechanisms are used for clamping special-shaped workpieces, and the clamping mechanisms are arranged at the edge of the top of the supporting base at equal intervals; wherein the clamping mechanism comprises an installation seat fixedly connected to the supporting seat, a clamping assembly used for clamping a workpiece is installed on the installation seat, and a plurality of telescopic assemblies arranged at equal intervals are installed on the side face of the clamping assembly. A workpiece to be machined is placed among the multiple clamping mechanisms, then the clamping bolt is rotated by rotating the hand wheel, the clamping seat is driven to be close to the workpiece under the action of threads of the threaded sleeve, the workpiece is extruded through the clamping plate, and telescopic adjustment of the clamping plate can be achieved by arranging the connecting spring. Therefore, the plurality of clamping plates can be ensured to abut against the workpiece, the clamping stability of the special-shaped workpiece is improved, and the practicability of the special-shaped workpiece clamping device is also improved.

The invention relates to the technical field of tooth socket disinfection, in particular to oral orthodontic tooth socket disinfection equipment which comprises a supporting base, the top of the supporting base is fixedly connected with a disinfection shell, the interior of the disinfection shell is fixedly connected with a semicircular groove cylinder, and the interior of the semicircular groove cylinder is fixedly connected with a separation baffle. A circular plate is arranged above the supporting base, a plurality of fixing strips are fixedly connected to the side face of the circular plate in the circumferential direction, and four containing assemblies are arranged between the circular plate and the supporting base in the circumferential direction. The placing assembly is sequentially immersed in disinfectant and clear water, complete contact between the orthodontic tooth socket and the disinfectant is guaranteed, the contact disinfection effect of the orthodontic tooth socket is guaranteed, the disinfectant left on the surface of the orthodontic tooth socket is cleaned through the clear water, discomfort caused by contact between the disinfectant and the oral cavity in the using process is reduced, and the use effect of the orthodontic tooth socket is improved. And the body health of the user is ensured.

The invention relates to the technical field of electroplating, in particular to a chemical plating tool and a chemical plating method. The cleaning device comprises a cleaning basket and a small basket frame arranged in the cleaning basket, a groove body structure with a V-shaped cross section is formed in the upper portion of the small basket frame, and the groove body structure serves as a storage groove for storing shaft-shaped plating parts; the cleaning device further comprises a swing mechanism, the two side walls, located in the groove length direction of the storage groove, of the cleaning basket serve as connecting side walls, the swing mechanism comprises two connecting parts movably connected with the two connecting side walls of the cleaning basket respectively, the two connecting parts can do reciprocating lifting motion, and the moving directions of the two connecting parts are opposite. Therefore, the cleaning basket swings up and down on the vertical plane where the groove length direction of the storage groove is located. According to the invention, oil removal, acid washing, water washing and electroplating procedures of chemical plating can be efficiently carried out on a large number of small plating parts with high quality.

The invention discloses clamping equipment capable of clamping irregular boron carbide pellets, relates to the technical field of clamping equipment, and provides the following scheme that the clamping equipment comprises a mounting frame, a motor is arranged at the end of the mounting frame, the output end of the motor is connected with a screw rod, a sliding frame is arranged in the screw rod, and the sliding frame is connected with the motor; a fixing frame is installed at the bottom of the sliding frame, a guide groove is formed in the fixing frame, a telescopic mechanism is slidably connected into the guide groove, butt clamps are arranged on the opposite sides of the sliding frame, an angle iron frame is welded to the outer side of the top of the mounting frame, and a mounting hole is formed in the outer side of the angle iron frame. A mounting bolt penetrates through the middle part of the mounting hole; by arranging the telescopic mechanism, three groups of telescopic blocks are respectively adapted to the outer surfaces of the special-shaped boron carbide pellets, so that the clamping force can be more uniform, the clamping contact points are effectively increased, the irregular boron carbide pellets are clamped in a self-adaptive manner, and the clamping stability and flexibility are better ensured.

The invention belongs to the technical field of seedling transplanting, and particularly relates to a seedling transplanting device and method for forestry planting. Comprising a moving platform, a supporting frame is arranged at the top of the moving platform, and saplings are placed on the supporting frame; a locking and clamping structural part is arranged on the moving platform and is used for clamping a sapling; the locking and clamping structural part comprises a clamping square plate located below the sapling, guide sliding blocks are connected to the two sides of the clamping square plate, and distance limiting and position adjusting devices are arranged on the guide sliding blocks and used for adjusting the clamping position of the sapling by the locking and clamping structural part; water can uniformly permeate to the periphery of a root system through the multi-angle liquid supplementing mechanism, most areas of the root system are prevented from being in a water shortage state, the limitation of the device during seedling transplanting operation is reduced, the situation that the device can only supplement water to local areas of the root of a seedling at one position is avoided, and therefore the phenomena of root system rot and the like caused by oxygen deficiency of the root are avoided; the transplanting effect of the device is improved.

The invention discloses an intelligent cleaning and disinfecting system for a hemodialysis extracorporeal circulation pipeline, and belongs to the technical field of medical instruments. Comprising the following modules: a real-time monitoring module used for detecting temperature, pressure, liquid level, residual pollutant and disinfectant concentration in a pipeline in real time and feeding back cleaning and disinfection state data; the intelligent control module is used for dynamically adjusting a flowing mode and cleaning disinfectant parameters on the basis of the cleaning and disinfection state data so as to achieve the optimal cleaning effect and the minimum use amount; the flow optimization module integrates a special flow channel structure and a programmable control valve, automatically optimizes the flow mode of the disinfectant in the pipeline according to the control instruction of the intelligent control module, and realizes full contact and efficient cleaning and disinfection; the cleaning disinfectant supply module is used for automatically proportioning and supplying a cleaning solution and a concentrated disinfectant according to the control instruction of the intelligent control module; and the safety protection module is integrated with functions of ultraviolet disinfection, liquid leakage monitoring and ventilation and exhaust, so that sterile and safe operation of the whole system is ensured.

The invention belongs to the technical field of gravel processing, and discloses a crushing device for gravel screening. Comprising a shell and a base sieve plate, the base sieve plate is fixedly connected to the bottom end of the shell, a hammer head is arranged in the shell, a first transmission rod is fixedly connected to the interior of the hammer head, the two ends of the first transmission rod penetrate through the two sides of the shell, and a motor is installed at the top end of the base sieve plate. According to the device, through the structural design of the transmission mechanism, the reciprocating mechanism and the reciprocating compound pipe, the motor drives the hammer head to rotate through the belt wheel and the belt to achieve effective crushing of gravel, the transmission mechanism drives the reciprocating mechanism, the reciprocating compound pipe transversely moves, the gravel is evenly conveyed to the hammer heads at different positions, serious local damage to the hammer heads is effectively avoided, and the service life of the hammer heads is prolonged. The service life of the device is remarkably prolonged, the crushing efficiency of the device is remarkably improved, through the design, it is guaranteed that gravel makes full contact with the hammer head, and the more uniform and efficient crushing effect is achieved.

The utility model relates to the technical field of automatic testing equipment, in particular to a plugging contact device for testing, which comprises a testing base, a testing placement assembly, a testing base and a testing pressing assembly, the testing placement assembly comprises a placement pushing module, a placement transmission seat and a placement fixing seat, the placement pushing module is mounted on the testing base, and the placement transmission seat is mounted on the testing base. The placement transmission seat is arranged on the base and used for driving the placement transmission seat to move, a test floating element is arranged on one side of the placement transmission seat, and the placement fixing seat is arranged on the test floating element and can float up and down along with the test floating element. The press-down driving module is used for driving the press-down positioning module to position the tested object and press down the tested object, and the placement fixing seat moves towards the test base under the action of the test floating element, so that the tested object is in contact with the test contact electrode. Automatic testing is achieved, manpower is saved, and testing precision is high.

The invention discloses an easy-to-install column-type voltage-stabilized power supply, and the power supply comprises a power supply assembly which comprises a box body, a compensation coil supporting seat disposed in the box body, and a voltage-stabilized part disposed at the upper end of the compensation coil supporting seat. The installation assembly comprises an installation part arranged on the compensation coil supporting base and a clamping piece arranged on the installation part, the installation part and the compensation coil supporting base are detachably connected, the voltage stabilizing part is provided with a matched clamping piece matched with the installation part, and the compensation coil supporting base is arranged at the lower end of the voltage stabilizing part. According to the power supply, the voltage stabilizing component is lifted, so that the voltage regulator electric brush is kept at a relatively high position and state, the purpose of saving the occupied space of the whole power supply is achieved, and the voltage stabilizing component is lifted, so that the voltage regulator electric brush can be more stable during voltage regulation, and the overall moving distance is longer.

The present invention relates to a test head for a probe station, which is used in conjunction with a carrier and a probe card, and includes a cover plate, a fixed frame, an interface board, a needle tower and a box body; a joint and a downward connection point are provided on the interface board, the connection point is electrically connected to the joint, and the interface board is fixedly installed with the fixed frame; the needle tower is installed under the fixed frame, the needle tower is provided with a pinhole, a spring pin is installed in the pinhole, the upper end of the spring pin is in contact with the connection point of the interface board, and the lower end of the spring pin is used to contact and connect with the probe of the probe card; the other end of the cover plate is flipped relative to the rotation axis to realize the closed cover state and the open cover state between the cover plate and the box body; in the closed cover state, the lower end of the spring pin of the needle tower can pass through the through hole A at the bottom of the box body to form a contact connection with the probe on the probe card. The present application can achieve reliable connection with the probe through a simple structure.

The utility model discloses municipal road ultrasonic detection equipment which comprises a mounting plate, an ultrasonic crack detector main body is mounted on the mounting plate, the ultrasonic crack detector main body is connected with a probe through a connecting line, and the municipal road ultrasonic detection equipment further comprises a probe supporting mechanism; during detection, the probe supporting mechanism always rolls on the road surface, a limiting frame is welded on the mounting plate, the ultrasonic crack detector main body is inserted into the limiting frame, a fastening pin is in threaded connection with the limiting frame, and the tail end of the fastening pin abuts against the ultrasonic crack detector main body. The probe supporting mechanism is arranged to support the probe, so that when the road surface is uneven, the damper correspondingly stretches out and draws back, it can be guaranteed that the universal wheels make contact with the road surface, then it is guaranteed that the distance between the probe and the road surface is constant, the detection effect is guaranteed, and interference of the detection effect caused by the uneven road surface is avoided.

The utility model discloses a tension adjusting device for processing and winding a preservative film, and relates to the technical field of motor boxes. An adjusting assembly is fixedly mounted at the top of the rack body; the adjusting assembly comprises a C-shaped frame; a first guide rod is arranged at one end of the C-shaped frame in a matched mode through a mounted bearing. A second guide rod is arranged in the C-shaped frame; a turntable is arranged on the inner wall of the C-shaped frame in a matched manner; a connecting plate is movably mounted on the turntable; the connecting plate and the turntable are eccentrically arranged; the end, away from the rotary disc, of the connecting plate is movably connected with the first swing rod and the second swing rod through connecting rods. When the preservative film clamping device is used, a preservative film sequentially penetrates through a first guide rod and a second guide rod in the adjusting assembly, one end of the preservative film penetrates through the position between the first clamping stick and the second clamping stick, and the distance between the first clamping stick and the second clamping stick is achieved by adjusting the adjusting block through the adjusting screw. And it is ensured that the first clamping stick and the second clamping stick are both in contact with the preservative film during tension adjustment.

The invention belongs to the technical field of concrete pipe installation, and mainly discloses installation equipment for a socket type reinforced concrete pipe. The length of an existing U-shaped lifting appliance cannot be adjusted in a self-adaptive mode according to the length of a pipeline. Comprising a U-shaped frame; the supporting rod is connected to the U-shaped frame in a sliding manner; the driving motor is installed on the U-shaped frame, an output shaft of the driving motor is fixedly connected with a threaded rod, and the threaded rod is rotationally connected with the U-shaped frame; the inserting block is connected to the supporting rod in a sliding manner and is in extrusion fit with the threaded rod; the lifting ring is arranged on the U-shaped frame; and the intercepting mechanism is arranged on the supporting rod and used for blocking the pipeline. The length of the U-shaped frame is increased through movement of the supporting rods, then the contact area of the U-shaped frame and the pipeline is increased, it is guaranteed that the inner wall of the pipeline makes full contact with the U-shaped frame, the pipeline is prevented from inclining in the hoisting process, and then the situation that the pipeline is cracked or even broken due to uneven stress is avoided.

The invention discloses attaching equipment for polaroids and an attaching method of the attaching equipment, and belongs to the field of polaroid production.The attaching equipment comprises a rack, a containing box is fixed to the rack, a vacuum suction head is arranged above the containing box, an air cylinder used for driving the vacuum suction head to ascend and descend is arranged on the rack, a mounting frame is arranged in the rack, and the mounting frame is connected with the vacuum suction head. An air cylinder used for driving the mounting frame to move is mounted on the rack, an electric push rod is fixed on the mounting frame, and the laminating mechanism is arranged on the mounting frame and used for laminating a polaroid. Through the arrangement of the pressing mechanism and the point pressing mechanism, the polaroid is adhered to the glass module in a rolling and point pressing intermittent use mode, uniform pressure distribution can be provided through rolling, full contact of the polaroid and glass is ensured, accordingly, bubbles and gaps are reduced, the overall bonding strength is enhanced, and the production efficiency is improved. And the point pressure can apply pressure in a targeted manner, so that the edge or local area can be effectively treated.

The invention provides electric heating water washing type tail gas treatment equipment which comprises a gas inlet pipe, a main cavity, a heating rod, a reaction cavity, a cooling cavity, a water tank and a gas-liquid separation cavity, the gas inlet pipe is connected with the main cavity, the main cavity is connected with the reaction cavity, the lower end of the reaction cavity is connected with the cooling cavity, the cooling cavity is connected with the water tank, and the water tank is connected with the heating rod. The water tank is connected with the gas-liquid separation cavity; the gradient of the air inlet pipe is 0.3%-0.5%; the gas-liquid separation cavity comprises a first exhaust cavity, a second exhaust cavity and an acid discharge pipe; the first exhaust cavity is fixedly connected with the second exhaust cavity through a flange; and the second exhaust cavity is fixedly connected with the acid discharge pipe through a flange. The invention further provides an electric heating water washing type tail gas treatment process. The tail gas treatment equipment provided by the invention is simple in structure and corrosion-resistant; according to the electric heating water washing type tail gas treatment process, accelerated corrosion of materials in the water washing system is prevented, the service life of equipment is prolonged, the cost is saved, and the tail gas treatment efficiency is improved.

The invention relates to the technical field of semiconductors, in particular to a power semiconductor manufacturing method, which comprises the following steps of: S100, bonding a pin frame on a DBC (Direct Bonding Copper) board by utilizing ultrasonic energy of an ultrasonic terminal bonding machine; a plurality of pins are arranged on the pin frame; s200, carrying out a push-pull force test on the DBC board; s300, carrying out static electricity removal and purging treatment on the DBC board; s400, mounting a plurality of chips on the DBC board, and bonding metal wires between the DBC board and the chips and between the chips to form electric connection between the DBC board and the chips and electric connection between the chips; s500, performing glue pouring treatment on the chip and the metal wire on the DBC board, and performing curing treatment on the DBC board; and S600, performing rib cutting treatment on the DBC board. By adopting the scheme, the influence of thermal stress generated by high temperature during chip welding on the pin bonding area can be avoided, and the product power pin bonding yield is improved.

The utility model discloses a polishing grinding head, which relates to the technical field of metal surface treatment, solves the problems that a grinding disc grinding sheet is in linear contact with the surface of a workpiece to be processed, is only suitable for grinding and polishing green bricks or stones with better surface flatness, and cannot be used for effectively polishing uneven surfaces, and comprises a grinding head motor, a transmission mechanism used for inputting power to the grinding head is fixed to a power output shaft of the grinding head motor, a fixing flange is fixed to the lower end of the transmission mechanism, a grinding head disc is installed on the lower surface of the fixing flange, and four fixing screws in threaded connection with the grinding head disc are installed in the fixing flange. An adjusting mechanism used for being flexibly connected with the grinding head penetrates through the interior of the grinding head disc. The spring is arranged in the mounting pipe, the limiting block is pushed to move, the movable rod drives the fixing plate to move, it is guaranteed that the polishing piece on the grinding head body makes normal contact with the surface of a polished object, and effective polishing machining can be conducted on uneven surfaces.

The present invention discloses a geographic information surveying and mapping device and a surveying and mapping method thereof, and relates to the field of geographic information surveying and mapping technology. The geographic information surveying and mapping device and the surveying and mapping method thereof include a geographic surveying and mapping mechanism, and the geographic surveying and mapping mechanism includes a flatbed car, the top of the flatbed car is fixedly connected with the geographic information surveying and mapping device, the bottom of the flatbed car is fixedly connected with rollers, the outer wall of the flatbed car is fixedly connected with a placement and stabilization mechanism, and the outer wall of the roller is fixedly connected with an impurity cleaning mechanism. The geographic information surveying and mapping device and the surveying and mapping method thereof, by rotating the second bolt, the bottoms of the folding rods are interlaced with each other, and then the insertion thorns are inserted into the ground, which further ensures the fixation of the geographic information surveying and mapping device, and the interlacing of the folding rods is aimed at harder soil, and the folding rods can be stuck on the soil to provide a stable support for the flatbed car, and the movement of the folding rods will drive the movement of the extrusion plate.

The utility model discloses a gear machining grabbing clamp which comprises a gear machining table, a rotating clamping block is arranged in the gear machining table, and a fixing mechanism is arranged between the gear machining table and the clamping block. According to the gear machining grabbing clamp, the clamping blocks capable of rotating are arranged in the gear machining table, angle rotation and position limitation between the clamping blocks and the gear machining table are achieved through the rotating assembly, and then the positions, relative to gears needing to be machined, of clamping rods in the clamping blocks can be flexibly adjusted; the clamping rods capable of sliding in the clamping block achieve position movement through rotation of the acting rod and threads, when the surfaces of the acting cone pulley and the synchronous cone pulley are meshed, the three clamping rods can synchronously move towards the center of the clamping block, and after the surfaces of the cone pulleys are separated, the acting rod can be independently rotated to control the positions of the clamping rods. And therefore, the surfaces of the gears within the size range can be in contact with the clamping rods on the three sides, and the clamping effect is guaranteed.

The invention discloses a preparation method and application of a biological enzyme immobilization carrier, and the preparation method comprises the following steps: S1, soaking dried calcium pectin powder in a pyrrole monomer aqueous solution, so that a pyrrole monomer uniformly permeates into calcium pectin gel particles along with water; s2, soaking the hydrogel obtained in the step S1 in a FeCl3 aqueous solution, and cross-linking the pyrrole monomer into polypyrrole; s3, the gel particles are put into a chitosan solution, the pH value of the chitosan solution is 4.0-4.5, stirring is conducted, chitosan is enriched on the surfaces of the calcium pectin gel particles to form a polyelectrolyte compound, and the chitosan is electrostatically adsorbed on the surfaces of the gel particles to obtain a biological enzyme fixed carrier with a gel core structure; according to the biological enzyme carrier with the gel solid structure, the characteristic that water in gel in the carrier does not flow is utilized, a substrate in reaction liquid is effectively enriched on the surface of the enzyme carrier, contact between enzyme and the substrate is improved, and the conversion efficiency of galactooligosaccharide is improved.

The invention relates to the technical field of potato water culture, and discloses a nutrient solution culture device and a circulating culture method for purple potato water culture. In the plant water culture process, the lifting mechanism can adjust the inclination angle between the liquid collecting boxes and the culture frame so as to drive the liquid level in the liquid collecting boxes to vibrate, water culture liquid in the liquid collecting boxes is mixed to a certain degree through vibration, it is guaranteed that components of the water culture liquid in all parts in each liquid collecting box are uniform, and the water culture efficiency is improved. A good hydroponic environment can be provided for plants, growth of the plants is promoted, hydroponic liquid on the bottom layer is conveyed into the waste liquid treatment mechanism through the waste liquid recycling mechanism to be treated and discharged, and the hydroponic liquid is supplied to each liquid collecting box again through the culture liquid conveying mechanism in a timed and quantitative mode; the hydroponic solution losing nutritional ingredients can be replaced in time, different types of hydroponic solutions can also be replaced to deal with different growth processes of plants, and the hydroponic effect of the plants can be effectively guaranteed.

The utility model relates to an automatic workpiece carrying and stamping production line which comprises a control panel, a feeding machine used for automatically taking, placing and straightening workpieces, a stamping machine used for stamping the workpieces, a receiving belt conveying line used for conveying the workpieces and a material frame used for storing the workpieces. The swing arm manipulator is used for transferring a workpiece of the feeding machine to one stamping machine, transferring a workpiece of the stamping machine to another stamping machine or transferring a workpiece of the stamping machine to the receiving belt conveying line; the material frame is positioned at an outlet of the receiving belt conveying line; according to the production line, automatic carrying and automatic punching of the workpieces and automatic straightening of the positions of the workpieces are achieved, the requirement for manual operation is reduced, and the production efficiency is greatly improved. The automatic operation process can effectively save time and labor cost, and the overall efficiency of the production line is improved.

The present invention relates to the technical field of automobile interior processing, and specifically to a processing and grinding device and method for automobile plastic interior parts, wherein the grinding device comprises a base, a clamping unit, a grinding mechanism and a guide unit. In the present invention, two guide blocks on the same L-shaped frame sequentially guide the movement of the corresponding processing rollers along the transverse section and the longitudinal section of the guide groove, thereby improving the stability during the processing, ensuring that the processing rollers can contact the inner side surface or the outer side surface of the interior decoration frame, and ensuring the uniformity of the grinding and polishing of the interior decoration frame. Secondly, the two processing rollers perform grinding processing at the same time, thereby improving the overall grinding processing efficiency. By adjusting the placement of the interior decoration frame and cooperating with the two clamping plates on the same mounting square tube, the inner side surface of the interior decoration frame can be inwardly expanded or the outer side surface can be circumferentially clamped, thereby being able to adapt to the grinding operation of the inner and outer annular surfaces of the interior decoration frame, thereby improving the adaptability of the device.

The invention discloses a scrubbing machine for preserved meat processing and a preserved meat processing system, and relates to the technical field of preserved meat processing. The scrubbing machine for preserved meat processing and the preserved meat processing system comprise a water receiving tank, distance adjusting mechanisms, a driving mechanism and a cleaning mechanism, the distance adjusting mechanisms are arranged on the two sides of the water receiving tank, each distance adjusting mechanism comprises an arc-shaped opening, an I-shaped sliding block, a first rotating rod and a movable plate, and the two sides of the water receiving tank are provided with two sets of arc-shaped openings which are symmetrical front and back; an I-shaped sliding block is slidably mounted on the inner wall of each arc-shaped opening, one side of the water receiving tank is rotationally connected with one ends of two first rotating rods, the outer walls of the two first rotating rods are fixedly connected with the interiors of a movable plate, and the tops of the movable plates are fixedly connected with one sides of the I-shaped sliding blocks. The distance between the two sets of cleaning rolling brushes is adjusted, it is guaranteed that bristles on the cleaning rolling brushes make contact with preserved meat to the maximum extent, sufficient friction force is provided for brushing of the preserved meat, the cleaning effect of the preserved meat is guaranteed, and the cleaning device can be suitable for different types of preserved meat.

The invention discloses ultrasonic continuous welding equipment and a welding method thereof. The ultrasonic continuous welding equipment comprises a rack, a track extending to the outside is arranged below the rack, a trolley is movably assembled on the track, and a bearing wall plate is fixed on the trolley; a main cross beam and an auxiliary cross beam which are arranged in parallel are assembled on the top of the rack in a sliding mode through guide rails, a welding actuator is installed on the main cross beam through a main mechanical arm, and an auxiliary actuator is installed on the auxiliary cross beam through an auxiliary mechanical arm. The placing rack is used for placing stringers in order; during actual welding, the auxiliary mechanical arm can grab the stringer and place the stringer at a preset welding position through the auxiliary actuator, the auxiliary actuator fixes the position of the stringer relative to the wall plate, spot welding of the welding actuator is combined to fix the stringer relative to the wall plate, and then continuous welding is conducted according to a preset path. The problem of deflection deformation in the welding process is effectively solved, the device is particularly suitable for welding of long and thin pieces, and the welding quality of automatic welding is greatly improved and guaranteed.

The utility model provides an air purification device. The air purification device comprises a fixing base, a rotating motor, a culture disc and a top cover. The fixing base is provided with a ventilation cavity, and a plurality of through holes are formed in the peripheral wall of the fixing base. The rotating motor is fixedly connected to the bottom surface of the ventilation cavity, and the power output end surface is provided with a slot; the upper surface of the culture tray is provided with a biological filtering material, and the lower surface is connected with a positioning rod suitable for being inserted into the slot; the top cover is detachably connected to the fixing base and provided with a light-transmitting opening suitable for facing the biological filtering material. During use, the fixed seat is fixedly mounted in an air circulation area, and external air enters the ventilation cavity through the through holes and then is purified by the biological filtering material. And when the biological filtering material needs to be replaced, the top cover is detached, the culture tray is taken out upwards, and the positioning rod is separated from the slot. The process of removing the biological filtering material is simple, and compared with the prior art, the air purification device provided by the utility model has the advantage that the regular maintenance efficiency of the biological filtering material is guaranteed.

This application relates to the field of solar cell technology, and more particularly to solar cells and their fabrication methods. The fabrication method of the solar cell includes the steps of: providing a solar cell having a first surface and a second surface disposed opposite to each other; performing a first printing, a second printing, and a third printing on the first surface sequentially; the first printing includes printing main grid lines; the second printing includes printing fine grid lines; and the third printing includes printing harpoon lines and / or border lines. The printing paste used for the third printing is a corrosive paste. This application adds a third printing step to print harpoon lines and border lines on the first surface of the solar cell, thus printing the harpoon lines and border lines separately from the main grid lines. Furthermore, the use of a corrosive paste in the third printing increases the current collection capacity in the harpoon line region, avoids clouding phenomena at the edge areas of the solar cell, and thereby improves the electrochemical performance of the solar cell.

The utility model discloses a three-point contact type bearing, which relates to the bearing field, and comprises an outer ring and an inner ring, the inner ring is arranged on the inner side of the outer ring, a plurality of balls are arranged between the outer ring and the inner ring, the inner ring comprises a front inner ring on the front side and a rear inner ring on the rear side, the front side of the rear inner ring is provided with a mounting groove, the mounting groove is internally provided with a connecting ring, and the connecting ring is connected with the outer ring. The inner side of the connecting ring is connected with the inner wall of the mounting groove through threads, and the front end of the rear inner ring and the rear end of the front inner ring are both slopes. The inner ring is divided into the rear inner ring and the front inner ring, the distance between the rear inner ring and the front inner ring can be adjusted, and when the balls are loosened due to abrasion, supporting points of the rear inner ring and the front inner ring on the balls are adjusted by reducing the distance between the rear inner ring and the front inner ring, so that the balls are pushed; therefore, gaps caused by abrasion are made up, and looseness caused by abrasion is avoided.

The utility model provides a clean barium sulfate powder sorting machine. The cleaning type barium sulfate powder sorting machine comprises a processing cylinder; the screen mesh is fixedly mounted in the processing cylinder; the protective cover is arranged at the top of the processing cylinder; the motor is fixedly mounted at the top of the protective cover; the rotating shaft is rotatably mounted on the protective cover, the rotating shaft is fixedly connected with an output shaft of the motor, and stirring blades can be mounted on the rotating shaft; and the material spreading assembly is arranged at the bottom of the rotating shaft. The cleaning type barium sulfate powder sorting machine has the advantages that the screening effect of barium sulfate powder can be guaranteed, and meanwhile pollution caused by flying dust formed by powder flying is effectively prevented.