136results about How to "Precise control" patented technology

The invention relates to the technical field of aerobic composting, in particular to a material turning device for aerobic composting and a layered turning method. The material turning and throwing device for aerobic composting comprises a walking mechanism, a supporting frame and a turning and throwing assembly, the turning and throwing assembly comprises a first turning and throwing roller assembly and a second turning and throwing roller assembly, and the first turning and throwing roller assembly is higher than the second turning and throwing roller assembly and turns and throws materials entering a turning and throwing channel in a layered mode; the second turning and throwing roller assembly comprises a roller shaft, a cutter structure and an adjusting structure used for driving the cutter structure to stretch out and draw back in the radial direction of the roller shaft, a telescopic part of the adjusting structure and the roller shaft are coaxially arranged, the adjusting structure is used for driving an adjusting rod to move in the axial direction of the roller shaft, and a mounting base corresponding to the cutter structure is arranged on the adjusting rod; the cutter structure is connected with the mounting seat through a connecting rod. According to the material turning and throwing device for aerobic composting, the turning and throwing effect is improved, the uniformity of turning and throwing materials is improved, the energy consumption is reduced, and the fermentation period of aerobic composting is shortened.

The invention discloses a flexible manipulator capable of adjusting positions and postures of fruits and a method. The flexible manipulator comprises a fixing mechanism, a driving mechanism, a connecting mechanism and a finger-shaped directional adjusting mechanism; the fixing mechanism is fixedly mounted on an external mechanical arm and is used for fixing the flexible manipulator; one end of the driving mechanism is mounted on the fixing mechanism and is used for driving the flexible manipulator to move; and the finger-shaped directional adjusting mechanism is arranged at the other end of the driving mechanism, is connected with the driving mechanism through the connecting mechanism and is used for clamping and adjusting the position posture of the fruit. The method comprises a fruit grabbing translation position adjusting method and a fruit grabbing rotation posture adjusting method. The flexible mechanical arm is simple in structure and convenient to control, the automatic operation capacity of the flexible mechanical arm is improved, the grabbing position and posture of fruits in the mechanical arm are adjusted, it is guaranteed that the fruits can be effectively controlled and adjusted under various complex operation situations, and the flexible mechanical arm has wide application prospects and practical value.

The invention relates to a dismounting and mounting device for a knob assembly. The dismounting and mounting device comprises a rack; the clamp is placed in the rack, and the two sides of the clamp are each used for being provided with a rotary knob assembly; the knob disassembling and assembling mechanism is used for being connected with the knob assembly; the pushing mechanism is connected with the knob disassembling and assembling mechanism and is used for pushing the knob disassembling and assembling mechanism to rotate and driving the two knob assemblies to synchronously rotate; and the lifting mechanism is connected with the pushing mechanism, drives the knob disassembling and assembling mechanism to ascend and descend, and extrudes the two knob assemblies to move. Through the synergistic effect of the pushing mechanism and the lifting mechanism, simultaneous and synchronous rotation and movement of the two rotary knob assemblies are achieved, the rotating direction of the rotary knob dismounting mechanism is accurately controlled, the height of the rotary knob dismounting mechanism is adjusted, the fineness and consistency of the dismounting process are guaranteed, the stability and accuracy in the dismounting process are guaranteed, and the dismounting efficiency is improved. And the disassembly and assembly operation process of the knob assembly is simplified, the operation difficulty is reduced, and the operation convenience and usability are improved.

The invention relates to a photovoltaic output control method and device and a power distribution network distributed photovoltaic cluster system, an edge calculation controller is deployed on the edge side of a power distribution network, voltage and distributed photovoltaic output conditions are monitored in real time, a voltage and power mathematical model is replaced with measurement data, the calculation amount is reduced, and the requirement for model precision is reduced. Through the combination of the edge calculation controller and the photovoltaic local controller, the control process can be adjusted according to the real-time change condition of each distributed photovoltaic in the distributed photovoltaic cluster system, the control effect is more accurate, and the accurate control of the distributed photovoltaic output can be realized. According to the method, the response speed of voltage regulation in the distributed photovoltaic cluster system of the power distribution network can be improved, the power transmission of the head end of the feeder line can be ensured to be within an allowable range, higher control precision is realized, and the method is of great significance in improving the operation efficiency of the power grid, improving the utilization rate of new energy and guaranteeing the safe and stable operation of the power grid.

The utility model discloses a dynamic balance device for detecting a brake disc, which comprises a support table, the upper surface of the support table is fixedly connected with a detection box body, a cooling assembly used for cooling is arranged below the support table, and an adjusting assembly used for adjusting detection and repair positions is arranged above the support table. A lifting assembly used for adjusting the detection and repair height is arranged below the adjusting assembly. According to the utility model, the electric slide rail drives the slide plate to move to the outside of the detection box body, so that automatic carrying and fixing of the brake disc can be realized, the brake disc is convenient to replace and take, the use is more convenient, the working efficiency of the device is improved, and the working efficiency of the device is improved. The fixing clamp is driven by the electric push rod to clamp and fix the brake disc, the force of the clamp can be accurately controlled, it is ensured that the brake disc is kept stable in the repairing process, repairing precision reduction caused by vibration or movement is avoided, and the detection and repairing precision of the brake disc can be guaranteed.

The invention discloses an embroidery machine frame movement execution speed control system, which relates to the technical field of embroidery machine control and comprises a data acquisition module, a processing module, a calculation module, an execution processing module and a monitoring module. The method has the advantages that parameters such as pattern path length and main shaft rotating speed are accurately calculated, a pattern original point does not need to be re-determined and checked under the condition of switching multiple patterns, so that the remodeling efficiency is improved, the operation difficulty and cost are reduced, whether the embroidery range is exceeded or not can be automatically judged before the patterns are embroidered, and the embroidery efficiency is improved. According to the system, the over-frame phenomenon of a pattern is effectively eradicated, the quality and the attractiveness of an embroidery product are improved, and the original point of the embroidery machine is not deviated by means of adjustment, error compensation and the like, so that the embroidery precision is greatly improved; and the control efficiency of the control device on the motor and the interpolation operation efficiency are improved, so that the frame movement execution speed of the embroidery machine is improved.

The utility model relates to the technical field of non-woven fabric smoothing, and discloses a non-woven fabric smoothing device which comprises a machining table, a connecting frame is fixedly connected to the top end of the machining table, a first electric hydraulic cylinder is fixedly connected to the top end of the inner wall of the connecting frame, and the driving end of the first electric hydraulic cylinder is fixedly connected with a connecting table. A second motor is fixedly connected to the rear end of the connecting table, a smoothing wheel is connected to the driving end of the second motor through a correcting set, fixing plates are fixedly connected to the left end and the right end of the machining table correspondingly, a first motor is fixedly connected to the rear end of the fixing plate at the left end, and a transmission pipe is fixedly connected to the driving end of the first motor. The front end of the transmission pipe is connected with an outer supporting plate through a supporting set. According to the utility model, through three-dimensional cooperative control of height, pressure and amplitude, flexible contact of non-woven fabrics with different gram weights is ensured, multidirectional stress wrinkles in high-speed production can be eliminated, rapid unloading of coiled materials with different diameters is ensured, and fiber layer damage caused by traditional knocking and dismounting can be avoided.

The utility model discloses a display backboard forming device which comprises an upper pressing plate, a forming box, an upper forming die and a lower forming die, supporting rods are arranged on the two sides of the top of the forming box, a top frame is arranged on the tops of the supporting rods, a hydraulic rod is arranged on the top frame, the upper pressing plate is arranged at the telescopic end of the hydraulic rod, and the lower pressing plate is arranged on the forming box. A control panel is arranged on the front face of the forming box, a supporting stand column is arranged in the middle of the bottom end of the forming box, a supporting base is arranged at the bottom of the supporting stand column, an upper forming die and a lower forming die are arranged in the forming box, and the upper forming die and the lower forming die are arranged in the forming box and right face each other. The forming box is arranged, the top frame is arranged on the top of the forming box through the supporting rod, the hydraulic rod is arranged on the top frame, the upper pressing plate can be conveniently subjected to stamping control through the hydraulic rod, use is convenient, the control force is accurate, and the upper forming die and the lower forming die which can be mutually subjected to stamping control are arranged in the forming box.

The invention relates to the technical field of processing of protective materials, and discloses processing equipment for aramid nano metallization comfortable protective materials, which comprises a processing box, filtering treatment equipment and a suction fan, the filtering treatment equipment is fixedly connected to the top of the processing box, and the suction fan is fixedly connected to the interior of the filtering treatment equipment. Inlets and outlets are formed in the two sides of the processing box, and the multiple auxiliary assemblies are used for removing impurities and moisture in aramid fibers in a multiple mode so that metal deposition can be more uniform; the aramid fibers moving in the middle are turned and flapped synchronously through the two flapping steel meshes II and the flapping steel mesh I, so that chippings and dust in the aramid fibers can be effectively flapped out, and the effect of removing the chippings and dust in the aramid fibers is improved; and the flapped fiber chippings and dust are adsorbed and collected under the electrostatic action of an electrostatic collection plate, and the situation that the fiber chippings and dust influence the aramid fiber removal effect in the processing box is reduced.

The invention relates to the technical field of non-standard automation, in particular to an automatic closestool assembling and stacking line which comprises a base assembling and conveying line, a base assembling mechanism, a transfer conveying line, a ribbon fixing mechanism, a packaging and positioning mechanism, a material taking mechanical arm, a material taking mechanism, a stacking and supporting mechanism and a stacking and film wrapping mechanism which are sequentially arranged. A manual assembling position is arranged on one side of the base assembling conveying line and used for manually assembling toilet bases. The seat body assembling mechanism is used for assembling a toilet seat and a toilet base; the transfer conveying line is used for loading an assembled toilet body into a packaging upper cover box packaging base; through seamless butt joint of continuous operation units such as the base assembly conveying line, the base body assembly mechanism and the transfer conveying line, high automation of the whole production process is achieved, manual intervention is greatly reduced, and therefore the production efficiency is remarkably improved.

This utility model discloses a novel piling device for road construction, belonging to the field of road construction technology. It includes a pile base, with mounting bolts threaded at each of the four corners. A servo motor is fixedly mounted on the side of the pile base, and a threaded rod is horizontally rotatably mounted inside the pile base. The output shaft end of the servo motor is fixedly connected to one end of the threaded rod. A threaded plate is threaded onto the outer surface of the threaded rod, and several connecting plates are fixedly mounted on the upper surface of the threaded plate. By using a pile base in conjunction with a threaded rod, a sliding seat, and a pile frame in conjunction with a hammer and a collar, the horizontal left-right movement of the pile frame is achieved by the rotation of the threaded rod, and the horizontal forward-backward movement of the pile frame is achieved by the forward-backward movement of the sliding seat. The overall structure is simple and easy to construct, suitable for use in small work sites, and its position can be finely adjusted left-right and forward-backward according to the actual piling point requirements, improving its versatility.

The invention discloses an automatic powder strickling mechanism which comprises a strickling assembly, an automatic powder strickling assembly and a control assembly, and the strickling assembly comprises a pair of flanges which are connected to the free end of a motor and rotate along with a motor shaft of the motor; the blades are distributed between the pair of flanges in an array mode in the circumferential direction of the motor shaft and rotate in the circumferential direction of the motor shaft along with the flanges, and any blade at least has the state of abutting against the scraping plane when rotating along with the flanges; the driving assembly is connected with the slicking assembly and drives the slicking assembly to do reciprocating motion in the extending direction of the slicking plane; any blade is rotatably connected with the pair of flanges. The invention further claims to protect a using method of the automatic powder slicking mechanism. According to the device, the production efficiency can be remarkably improved, the labor cost can be reduced, standardization and consistency of powder slicking can be achieved through an accurate control mechanism, meanwhile, the requirements of an automatic production line are met, and the filter element preparation technology is promoted to advance towards higher-level intelligent manufacturing.

The invention relates to the technical field of nonlinear control, and discloses a transverse and lateral attitude controller design method based on an all-wheel-drive system method and interference compensation. The method comprises the following steps: establishing an aircraft transverse and lateral coupling model; according to the transverse and lateral coupling model of the aircraft, calculating a reference control instruction by using an all-drive system method; and obtaining an interference compensation attitude controller by using an active disturbance rejection method, and compensating the reference control instruction through the interference compensation attitude controller to obtain a compensated control instruction. The controller designed by the invention can well track the attitude instruction.

This utility model relates to the field of power machinery technology and discloses a centrifugal mechanical power enhancer, including a support frame with a symmetrical support structure. One end is fixed with a reinforcing part, and the other end is rotatably connected to a second gear disk. The middle section supports a drive device. The drive device, using a motor structure, is located at the lower part of the support frame and is connected to the drive shaft via a chain to provide initial rotational power. The reinforcing part, the core power enhancement unit, includes: a first gear disk, coaxially connected to a connecting shaft, with an inner gear ring meshing with a drive gear, and circumferentially distributed mounting positions for the iron-throwing parts on the outer side; a positioning disk, coaxially arranged with the gear disk and maintaining a distance, rotatably connected to the support frame via bearings, providing a reaction force fulcrum for the iron-throwing parts; and three symmetrically arranged iron-throwing parts, each containing a 24 kg iron-throwing body. This utility model features a compact structure, efficient transmission, and enhanced power through the cooperation of the iron-throwing parts and gear disks. The electrical control cabinet allows for precise adjustment, adapting to different loads and exhibiting strong stability.

The utility model discloses a centralized recovery processing box convenient for air blast cleaning of plastic mould waste, which comprises a recovery box, two sides of the top end of the recovery box are connected with side plates, two ends of one side of each side plate are in threaded connection with fixing screws, the side plates are detachably connected with the recovery box through the fixing screws, and the recovery box is connected with the side plates through the fixing screws. The top ends of the side plates are connected with a top plate. According to the utility model, the two groups of high-pressure telescopic air pipes are respectively connected with the air supply equipment and the water supply equipment, namely, the high-pressure telescopic air pipes and the corresponding branch pipes are used for blowing air to the plastic mold in the recycling box, and the formed high-pressure air flow is used for washing the plastic mold, so that waste materials, chippings or attachments remaining on the plastic mold are washed down; and the plastic mold can be further flushed by utilizing water discharged from the branch pipes, so that the plastic mold is cleaned more comprehensively, the cleaning effect is better, and normal use and product quality of the plastic mold are ensured.

The utility model relates to the field of edge rolling machines, and discloses an edge rolling machine capable of running stably, the distance between a movable plate body and a main body structure is allowed to be accurately adjusted through the design of a telescopic oil cylinder, and the adjusting mechanism is crucial for adapting to workpieces with different thicknesses and widths. The flexibility of the forming process and the consistency of the forming quality are ensured, the output shaft of the telescopic oil cylinder is directly connected with the main body structure, reliable power transmission and accurate control capacity are provided, and therefore the forming precision is improved, and if the design of the telescopic oil cylinder is not enough to support workpieces with different thicknesses or the telescopic range of the telescopic oil cylinder is limited, the forming precision is improved. And if the workpiece is not machined, the machine cannot adapt to the thickness requirements of various workpieces, possibly causes non-uniform workpiece forming in the edge rolling process, or cannot process workpieces with specific specifications.

The invention discloses an electromagnetic wave-transparent connecting module for splicing metal plates and a construction method. The module is made of an insulating material, is provided with a mechanical interface for connecting adjacent metal plates, and is internally provided with an electromagnetic regulation and control structure, so that electromagnetic waves of a preset frequency band can be allowed to pass while the electrical continuity between the plates is blocked. Structural connection, physical sealing and electromagnetic wave regulation and control functions are integrated, the electromagnetic shielding problem of a metal building enclosure system is fundamentally solved, structure-function integration is achieved, construction is easy and convenient, and a large-area seamless electromagnetic wave-transparent building facade or roof can be constructed.

The utility model discloses a stamping mechanism for processing a shell of a temperature controller, which comprises a bottom plate, the bottom plate is arranged on external equipment, a limiting mechanism is arranged on the bottom plate, and the limiting mechanism comprises a follow-up mechanism, a fixing sleeve, a positioning rod, a pressure head, a bearing seat, a push spring, a round head, an extending plate and a fixing mechanism, the follow-up mechanism is connected to the bottom plate and the fixing sleeve in a matched mode, the positioning rod is connected to the fixing sleeve in a sliding mode, the pressing head is installed on the positioning rod, the bearing base is installed on the bottom plate, the pressing head and the bearing base are coaxially arranged, the limiting mechanism can accurately control the force in the punching process, and material damage caused by too large force is prevented. Through the synergistic effect of the positioning rod, the pressing head, the bearing base, the push spring and other components, the limiting mechanism provides adjustable resistance in the punching process.

The utility model discloses disassembling equipment for a button battery, which relates to the technical field of battery disassembling and comprises a case, guide posts are fixedly connected to the left side and the right side above the case, a fixing plate is fixedly connected to the upper portions of the two guide posts, an upper die holder is detachably connected to the middle of the bottom surface of the fixing plate, and an ejector pin is fixedly connected to the middle of the bottom surface of the upper die holder. A moving plate is slidably connected between the two guide columns through sliding sleeves, a fixing seat is detachably connected to the middle of the upper surface of the moving plate, a lower die holder is detachably connected to the upper portion of the fixing seat, a disassembling groove is formed in the middle of the upper portion of the lower die holder, disassembling steps are arranged in the disassembling groove, and a jacking assembly is fixedly installed at the position, below the moving plate, above the machine box. The device has the advantages that the jacking assembly is driven by the servo motor to accurately control the height of the moving plate, the disassembly strength and angle can be accurately controlled in cooperation with positioning of the ejector pin and the disassembly step, breakage or deformation of a battery shell caused by disassembly of traditional pliers is avoided, and it is ensured that the internal structure is complete.

The invention discloses an ozone-treated organic wastewater comprehensive analysis system and a measurement method, comprising the ozone-treated organic wastewater comprehensive analysis system, an oxygen generator, an ozone generator, an ozone detector, a pump, a water inlet storage tank, an ozone destroyer, an ozone detector and a water outlet storage tank, wherein the air inlet of the ozone-treated organic wastewater comprehensive analysis system is connected to the ozone detector, the ozone detector is connected to the ozone generator, the ozone generator is connected to the oxygen generator, and the water inlet of the ozone-treated organic wastewater comprehensive analysis system is connected to the pump; the problem of ozone catalyst performance detection in the process of ozone catalytic oxidation of organic wastewater in a polluted environment is solved.

The utility model discloses a tool for cleaning accumulated slag at a dedusting flue port of an LF (ladle furnace), which relates to the technical field of auxiliary equipment in the metallurgical industry and comprises a grid support and an operating rod piece, the grid support is used for being detachably and fixedly connected with a slag cleaning port at the dedusting flue port of the LF, and the grid support is provided with a plurality of grids; the cleaning end of the operation rod piece is used for penetrating through a grid and being supported on the edge of the grid, the cleaning end of the operation rod piece is used for being inserted into a gap between a flue wall and accumulated slag so as to clean the accumulated slag, the end, away from the cleaning end, of the operation rod piece is the handle end, the handle end is used for being held by an operator, the structure is simple, use is convenient, and practicability is high. Meanwhile, efficient operation of the dust removal system is guaranteed, the field operation environment is improved, and the health of workers is protected.

This utility model relates to the field of cast-in-place pile construction technology, specifically to a suspended mud pump, including a mud pump body, a support assembly, and a floating assembly. The support assembly has a centrally located space for mounting the mud pump body, which is situated within this space. The floating assembly is positioned around the support assembly and includes at least two suspension units. These suspension units provide buoyancy to support the mud pump body. The mud pump body reciprocates based on these suspension units, following changes in the mud slurry level. The mud pump body has a suction port located at its lower part, flush with the bottom of the floating assembly. This design prevents the water level from exceeding the motor's height or causing idling, extending equipment lifespan. Furthermore, by maintaining a reasonable relative depth between the suction port and the liquid surface, fluctuations in suction resistance are reduced, ensuring stable mud circulation flow.

The invention discloses an accurate attitude control method for a quad-rotor unmanned aerial vehicle under large maneuver, and the method comprises the steps: taking geometric control for large maneuver flight control as a basis, re-building an accurate attitude kinematics model described by a rotation matrix, designing an extended state observer on the basis of the model, and carrying out the precise attitude control of the quad-rotor unmanned aerial vehicle. Errors caused by interior and exterior of the unmanned aerial vehicle are observed; the controller adopts geometric cascade PID control, and the control algorithm not only keeps the simple structure, but also has good enough robustness, and is also easy to deploy on the actual unmanned aerial vehicle at the same time.

The utility model discloses a steel plate rust removal mechanism for ship building and repairing, and relates to the technical field of steel plate rust removal. Comprising a movable support, the movable support is provided with a rust removal mechanism used for a steel plate for ship building and repairing, and the rust removal mechanism comprises the structure that when a sliding rail support rotates, the angle of a grinding wheel at the lower end of the sliding rail support can be adjusted, the grinding wheel is fixed to be in a vertical state, and in the ship building and repairing process, the working faces of the steel plate are diversified; a large number of horizontally-placed steel plates and vertical faces such as the side wall of the ship exist, through the rapid action of a second electric push rod, the grinding wheel can be rapidly switched between the two modes of horizontal grinding for plane steel plate rust removal and vertical grinding for ship side wall rust removal, manual disassembly and re-installation of grinding equipment are not needed, and the working efficiency is improved. The operation conversion time is greatly saved, the overall rust removal efficiency is improved, the rust removal requirements of steel plates at different positions and angles can be met, the working efficiency is improved, and multiple purposes are achieved through one machine.

The utility model relates to the field of semiconductor process equipment, in particular to a buffer cavity cover manual and electric integrated uncovering device which comprises a side edge fixing plate, a top end cover is fixed above one side of the outer wall of the side edge fixing plate, and a lower base is fixed at the bottom of one side of the outer wall of the side edge fixing plate. A buffering cavity connecting plate fixed to the buffering cavity cover is arranged at the front end of the outer wall of the side edge fixing plate and located between the top end cover and the lower base, a lifting component is arranged at the end, close to the side edge fixing plate, of the buffering cavity connecting plate, and a power component for driving the lifting component is arranged at the top end of the outer wall of the top end cover. According to the utility model, the operation process is simplified, the uncovering stability is improved, the safety is enhanced, the labor intensity is reduced, the production efficiency is improved, the convenient, quick, safe and reliable uncovering experience is brought to a user, and the uncovering device has obvious advantages and beneficial effects.

The utility model provides a monitoring device for an informatization port, and relates to the technical field of automatic monitoring. According to the technical scheme, the monitoring device for the informatization port comprises a monitor body, the monitor body is fixed to an installation base, the installation base is provided with a threaded hole and a guide through hole, a threaded rod matched with the threaded hole is installed in the threaded hole, a guide rod matched with the guide through hole is installed in the guide through hole, and the monitor body is fixed to the installation base. And the axis of the guide rod is parallel to the axis of the threaded rod. The device has the beneficial effects that when the device needs to be overhauled and maintained, the device can be easily adjusted to a low position, so that the operation of a worker is greatly facilitated; and after the maintenance is completed, the device can be quickly recovered to the required height, and the efficient monitoring function can be continuously performed.

The invention relates to a blood purification system control method and device based on a neural network, and aims to overcome the defects of a traditional fixed treatment mode in processing special cases or coping with emergencies. According to the method, current treatment parameters, such as the blood flow rate, the dialysate flow and the ultrafiltration rate, of a patient detected by a blood purification system are obtained, data analysis is conducted on the parameters through a preset neural network model, control parameters are obtained, and the system is adjusted in real time. Based on the feedback mechanism, the method continuously optimizes the treatment regimen until the parameters of the patient meet the preset conditions. The system can dynamically respond to physical sign changes of the patient, and personalized and intelligent treatment management is achieved.

The utility model relates to dumbbell piece packaging technical field, and disclose a kind of dumbbell piece packaging equipment, including workbench, the both sides of the top of workbench are fixedly installed with support rod, center positioning column is fixedly installed in rotating tray, the top of workbench is fixedly installed with backing plate, the top of backing plate is fixedly installed with fixed plate, telescopic cylinder two is fixedly installed in the fixed plate, the front end of telescopic cylinder two is fixedly installed with fixed seat, slide rail is set in the fixed seat, slide block is slidably installed on the slide rail, the outside of threaded rod is installed with push wheel. This dumbbell piece packaging equipment, dumbbell piece packaging equipment can realize automatic operation, equipment can accurately cut film to appropriate size, ensure that dumbbell piece is completely wrapped, and the sealing of film can be closely fitted, so that the packaging effect of each product can keep basically same, which helps to improve the overall image of product.

The invention discloses a method for preparing a star-shaped block copolymer based on a light-operated in-situ bromine-iodine conversion reversible-inactivation free radical polymerization method, which comprises the following steps: mixing and dissolving MMA (methyl methacrylate), an alkyl bromide initiator, iodide and an amine catalyst, and carrying out BIT-RDRP reaction under the irradiation of blue light to obtain a star-shaped homopolymer; and mixing and dissolving PEGMA300, iodide and an amine catalyst, mixing with the star-shaped homopolymer, and carrying out a BIT-RDRP reaction under the irradiation of blue light to obtain the amphiphilic star-shaped block copolymer. According to the invention, a BIT-RDRP reaction is adopted, and the BIT-RDRP reaction is introduced into a continuous flow microtube reactor to prepare an amphiphilic star-shaped block copolymer with a controllable block ratio; the method is mild in condition, simple in component, high in efficiency and capable of realizing continuous preparation, and a simple and efficient method is provided for controllable large-scale preparation of the star-shaped block copolymer.

The efficient long-distance belt conveyor in the footrill comprises a conveying mechanism used for conveying stone, a plurality of portal frames are sequentially arranged above the conveying mechanism in the conveying direction of the conveying mechanism, and each portal frame is provided with a clamping crushing assembly, an extruding crushing assembly and a rolling crushing assembly. The rolling pressure of the rolling crushing assembly is adjustable, and the rolling pressure of the rolling crushing assembly is gradually increased along with the downward pressing action of the extrusion crushing assembly. The multiple portal frames are arranged above the conveying mechanism, the clamping crushing assembly, the extruding crushing assembly and the rolling crushing assembly are integrated, multi-stage continuous crushing of stone is achieved, and the crushing efficiency and the conveying capacity are greatly improved. The rolling pressure of the rolling crushing assembly is adjustable and is gradually increased along with the downward pressing action of the extrusion crushing assembly, so that the crushing process is more flexible and efficient.