779results about How to "Improve adjustability" patented technology

The invention relates to a virtual power plant regulation and control method and system for realizing new energy consumption. The method comprises the steps of performing statistics according to a wind and light power generation module to obtain predicted power generation amount E1 in each time period; according to an electric vehicle scheduling module, predicting the actual charging demand electric quantity QS1 of the electric vehicle in each time period; predicting actual load demand electric quantity QS2 in each time period according to a load prediction module; according to the energy storage module, calculating the storable electric quantity C and the standby residual capacity CS of each time period in real time; and according to the virtual power plant global scheduling module, the electric quantity difference value E difference required by each time period is calculated according to the predicted electric quantity E1 of each time period, the actual charging demand electric quantity QS1, the actual load demand electric quantity QS2 and the storable electric quantity C, and according to the electric quantity difference value E difference, a scheduling power generation instruction is issued to the heat power unit module for time-phased power generation. The distributed new energy consumption can be realized, and the stability and economy of grid-connected scheduling operation of the distributed new energy equipment can be improved at the same time.

The invention discloses a double-guide-column plastic material forming machine. The die comprises a supporting base, a lower die base arranged on the supporting base, an upper die base capable of moving in a reciprocating mode relative to the lower die base, a driving supporting base arranged on the rear portion of the supporting base and a guiding supporting base vertically arranged on the driving supporting base, and a driving lead screw is arranged on the driving supporting base. Two guide rods parallel to the driving lead screw are arranged between the top of the guide supporting base and the supporting base, the upper die base is installed with the driving lead screw and the two guide rods in a matched mode, and a die pressing plate matched with the lower die base is fixedly installed on the upper die base. The mold pressing plate can reciprocate relative to the lower mold base through lifting of the upper mold base so as to press a blank. The device has the advantages that the action reliability and stability are good in the pressing process, and the pressing quality is greatly improved. And the parallelism of the guide rod and the screw rod is ensured, so that the pressing quality is greatly improved. The device is easy to manufacture, low in manufacturing cost, convenient to operate and use and high in use efficiency.

The invention provides automatic cloth strength detection equipment, and relates to the technical field of textile detection. A top plate is fixedly installed at the top of the detection table, a conductor column is fixedly installed at the outer end of the installation base, the bottom of the conductor column is connected with the other wiring end of the fan body through a wire, a set of movable bottom plates are further installed on the detection table in a sliding mode, and positioning holes are formed in the movable bottom plates at equal intervals. The positioning columns at the front end and the rear end of the first fixing block are inserted into the positioning holes of the movable bottom plate. The detected cloth can be conveniently and rapidly fixed through the moving frame, and in the downward moving process of the moving frame, the fan body blows air leftwards to the detected cloth so as to flatten the surface of the detected cloth; a first fixing block and a movable bottom plate are in automatic limiting connection through a positioning column, and the device can conveniently detect the strength of the detected cloth according to data of a pressure sensor; the device solves the problems that the device is not easy to quickly fix the detected cloth for strength detection, and the device is easily influenced by surface wrinkles of the detected cloth.

The invention discloses a multi-layer steel structure modular structure intelligent mounting platform, and particularly relates to the technical field of steel structure mounting, the multi-layer steel structure modular structure intelligent mounting platform comprises a supporting plate, a sliding frame, a push-up electric cylinder and a distance synchronous adjusting mechanism; wherein the interval synchronous adjusting mechanism comprises a linkage frame, a linkage frame, a linkage screw rod, two threaded sleeve blocks, a gear motor, a bearing sleeve block, a rotating shaft, an induction block and an interval sensor, and a first-stage synchronous adjusting mechanism is arranged on one side of the linkage frame; wherein a two-stage synchronous adjusting mechanism is arranged at the top end of the rotating shaft. By means of the interval synchronous adjusting mechanism, the interval distance between two first-stage platform rotating points can be adjusted synchronously, intelligently and accurately according to the specified distance, so that the installation efficiency of the modular structure of the multi-layer steel structure is greatly improved, and the problems that a large amount of installation time is wasted due to the fact that installation is large in limitation, and the installation cost is reduced are solved. And the installation efficiency is greatly reduced.

The invention provides a common-mandrel double-self-driving synchronous control permanent magnet outer rotor lifting device and a control method thereof.The device comprises a mandrel and supporting bases used for supporting the left end and the right end of the mandrel, and the mandrel is provided with a left permanent magnet outer rotor lifting structure and a right permanent magnet outer rotor lifting structure; each permanent magnet outer rotor lifting structure comprises a winding drum, a stator, a permanent magnet, an end cover and a disc brake used for braking the winding drum, the stator is arranged in the winding drum, the winding drum is rotatably connected with the mandrel, the stator comprises a stator iron core support, a stator iron core and a stator winding, the stator iron core support is arranged on the mandrel and provided with the stator iron core, and the stator winding is arranged on the stator iron core support. The stator core adopts a magnetic slot wedge, the stator winding is arranged on the stator core, and the mandrel is provided with a wiring slot for accommodating a stator winding outgoing line; the whole diameter can be reduced, the stability during working is improved, the double-load two-way transportation requirement can be met, the flexibility and adjustability are improved, and the double-load two-way transportation device has the advantages of being few in transmission links, free of a high-speed shaft, high in reliability and low in energy consumption.

The utility model is suitable for the technical field of elevator guide rail detection, and provides an elevator guide rail deformation detection device which comprises a detection frame and a detection structure. The detection structure comprises two assembly seats; the detection roller slides on the two assembly seats; the sides, away from each other, of the two detection rollers are provided with reset springs, and the two detection cavities are symmetrically formed in the outer side of the detection frame. The buzzing alarm is arranged on the inner wall of the detection cavity; the ends, extending to the detection cavity, of the two reset springs are each provided with a proximity sensor. The device has high-precision and high-speed real-time monitoring capacity, accurate measurement of deformation of the elevator guide rail is ensured, the design of the guide rod and the guide plate allows flexible adjustment so as to adapt to guide rails with different sizes, the universality and the application range of the device are enhanced, the guide plate with the semi-arc-shaped section is ensured to be tightly attached to the guide rail, abrasion is reduced, and the service life of the guide rail is prolonged. And on the whole, powerful technical guarantee is provided for safe operation of the elevator.

The invention discloses a crushing and sampling device for mine geological exploration and a using method. The crushing and sampling device comprises an adjusting base frame and a drilling and sampling mechanism fixedly arranged on the adjusting base frame. The adjusting base frame comprises a reference ring and a telescopic supporting body, the telescopic supporting body comprises a supporting groove body and a supporting rod, the supporting groove body and the supporting rod are connected in a sliding and rotating mode, a first locking piece is arranged on the supporting rod and used for fixing the supporting groove body and the supporting rod, and a containing plate is rotationally arranged at the end, away from the supporting groove body, of the supporting rod. The placing plate is used for being fixed to the ground, a second locking piece is arranged on the placing plate, and the second locking piece is used for fixing the placing plate and the supporting rod; the end, away from the supporting rod, of the supporting groove is rotationally connected with the reference ring, a connecting hole is formed in the upper surface of the reference ring, a connecting plate is arranged on the supporting groove, and the connecting plate can be fixedly connected with the reference ring through the connecting hole, so that the supporting groove is fixed to the angle parallel to the reference ring. The device can adapt to different terrains and is convenient to use.

The invention discloses an SCR (Selective Catalytic Reduction) denitration system which comprises an SCR denitration tower, and a flue guide plate, a flue gas pre-mixer, a main ammonia spraying grid, an ammonia-smoke turbulator, a main catalyst layer, a supplementary ammonia spraying grid and a supplementary catalyst layer are sequentially arranged in the SCR denitration tower in the flue gas circulation direction; the main ammonia spraying grid comprises a plurality of first ammonia spraying branch pipes which are arranged in parallel at equal intervals in the direction perpendicular to the flue gas circulation direction, a row of first nozzles and a row of second nozzles are obliquely arranged on each first ammonia spraying branch pipe in the length direction, the number of the nozzles in each row is multiple, and the first nozzles and the second nozzles are arranged in a staggered mode and face different directions; each ammonia spraying branch pipe is communicated with the ammonia supply pipe, and an ammonia gas control valve is arranged on each first ammonia spraying branch pipe. Through cooperative use of the main ammonia injection grid and the supplementary ammonia injection grid, ammonia escape is reduced, uniform injection of ammonia gas in the whole reaction space is realized, and it is ensured that ammonia escape is maintained at a reasonable level.

The invention discloses a grinding tool surface flatness detection device and detection method, and relates to the technical field of industrial automatic detection, the grinding tool surface flatness detection device comprises an external mechanism, a transmitting mechanism, a detection mechanism and a conveying mechanism, the detection mechanism is used for receiving a reflected or scattered laser beam, mapping the reflected or scattered laser beam to a receiving end of a laser recovery table, analyzing a laser signal and converting the laser signal into an electric signal; in the invention, the surface of the grinding tool is firstly cleaned by high-pressure gas to ensure the accuracy of the detection result, and when the subsequently generated laser beam irradiates the surface of the grinding tool and the emitted laser beam is mapped to the detection end of the laser recovery table, the detection result is accurately detected by measuring the intensity, frequency, phase and other parameters of the laser signal. According to the method, the micro fluctuation and the unevenness of the surface of the grinding tool can be reflected, powerful data support is provided for quality control and improvement of the grinding tool, and the intelligent detection process not only improves the automation degree of detection, but also ensures the accuracy and the reliability of a detection result.

An existing sintering flue gas treatment process additionally provided with a CO removal device is improved, the flue gas purification process and system for synergistically removing multiple pollutants are provided, SO2, NOx, dust and CO are efficiently removed, pollutants such as SO3, HCl, HF and heavy metal can be efficiently and synergistically removed, long-term stable operation of a CO catalyst can be ensured, and the service life of the flue gas purification system is prolonged. And meanwhile, the system stability under different CO concentration fluctuations can be adapted, the CO device can be ensured to operate in a high-efficiency state for a long time, and meanwhile, the effects of saving energy and reducing carbon are achieved.

The utility model discloses a stone mountain shrub grass cluster community investigation quadrat device, which comprises a support column, a quadrat frame, a connecting mechanism and a base, the length of the support column is adjustable, and the connecting mechanism comprises four angle-adjustable three-way pipe sleeves. The included angle between the two-way pipe sleeves in the three-way pipe sleeve is 90 degrees, the two-way pipe sleeves are connected with telescopic quadrat strips to form a square quadrat frame, the included angle between the third-way pipe sleeve in the three-way pipe sleeve and the other two-way pipe sleeves is adjustable, and the third-way pipe sleeve in the three-way pipe sleeve is connected with a supporting column; the base is a square block, a plurality of ground nails are arranged on the square block, and the bottom end of the supporting column can be inserted into the square block. The adjustability of the whole device is increased through the connecting mechanism, the horizontal state of the quadrat frame can be adjusted according to the actual situation of a site, and scientists can conduct field investigation more conveniently; in addition, the size of the quadrat frame can be rapidly and conveniently adjusted, rapid installation and adjustment of the device in practical application are facilitated, and precision and flexibility are high; therefore, the reading is more accurate, and the experiment precision is improved.

The invention relates to a construction method for excavation, grouting and pre-reinforcement of a deep foundation pit close to an operating sewage pipe, a newly-added inner supporting device is researched and developed, a fixing frame is hung on installed inner supporting I-shaped steel, a rotating body and a telescopic rod are arranged at the lower end of the fixing frame, the problems of positioning and temporary placement of the newly-added inner supporting device are solved, and multi-dimensional inner supporting adding is achieved; a foundation pit water level dynamic balance technology is provided, a hydraulic sensor is pre-buried in a dewatering well in a pit, it is ensured that the water level in the foundation pit is kept within a certain range, and the safety of foundation pit excavation construction is improved; a local adding diagonal bracing structure is researched and developed, by arranging the prefabricated concrete pier, the problem of local adding of inner bracing retaining is solved, and the stability of the supporting structure is improved; the lateral grouting technology is provided, the lateral grouting holes are formed in the newly-added stand columns and the steel sheet piles, multi-angle grouting is achieved, the defects of vertical grouting are overcome, and the stability of soil around the sewage pipe is enhanced.

The utility model provides an automobile part processing device, which relates to the technical field of automobile part processing and comprises a polishing mechanism, a fixing mechanism is arranged at the top of the polishing mechanism, the polishing mechanism comprises a bottom plate, a chassis is arranged at the top of the bottom plate, and a universal ball is arranged in the chassis. An operator can adjust the polishing angle of an object according to needs, the motor is started, the eccentric rod drives the universal ball to move, in the moving process, the middle-position disc can indirectly swing at different heights, the universal column on the middle-position disc jacks up the platen from various angles, and the polishing angle of the object is adjusted. Due to the fact that the table plate can be jacked up from various angles through the universal columns on the middle-position disc, the accessories can be exposed to a grinding tool at different angles in the grinding process, grinding can be carried out more evenly, the situation of local excessive abrasion or insufficient grinding is avoided, different grinding effects are achieved, and the flexibility and adjustability of the technology are enhanced.

The utility model provides a garden weeding device, and relates to the technical field of garden weeding. Two rolling shafts are rotationally connected to the trolley body, a rolling wheel is fixed to each rolling shaft, and the four rolling wheels make contact with the ground; a first weeding assembly is installed on the vehicle body. According to the weeding device, through the arrangement of the first weeding assembly and the second weeding assembly, weeds can be turned out of soil through a soil turning plate on the first weeding assembly, at the moment, the roots of the weeds are exposed, separation of the roots of the weeds from the soil is achieved, and weeding is achieved; secondly, the pesticide liquid sprayed out of the spray pipe can be in contact with the roots of the weeds to kill the weeds again, and the weed killing effect is improved; and thirdly, during follow-up cleaning, spraying holes in the spraying pipes are aligned to the soil turning plate, soil on the soil turning plate can be washed away, and maintenance is more convenient.

The utility model relates to the technical field of wood door processing, and discloses a polishing device for solid wood door processing, which comprises a mounting rack and a polishing machine head, a working platform is slidably mounted on the upper surface of the mounting rack, and a positioning groove and a positioning threaded hole are respectively formed in the upper surface of the working platform; a positioning baffle can be installed at the positioning groove or the positioning threaded hole, a rotating table is fixedly installed on the lower side of the installation rack, a swing arm is rotatably installed on the upper side of the rotating table, a locking bolt is installed on the upper surface of the swing arm in a threaded mode, and the polishing machine head is fixedly installed on the upper side of the swing arm. According to the polishing device, the polishing machine head is installed on the swing arm, the polishing machine head can be rotated to the side face of the working platform so that the side face of a plate can be polished through a polishing abrasive belt, or the polishing machine head is rotated to the end of the working platform so that the end face of the plate can be polished, and the effect that the position of the polishing machine head can be adjusted is achieved; and the use requirement for grinding different positions is met, and practicability is higher.

The invention is applicable to the technical field of perovskite luminescent materials, and provides a one-dimensional perovskite method luminescent material which is a one-dimensional zigzag edge shared perovskite luminescent material and has a colorless transparent single crystal structure, and a preparation method comprises the following steps: dissolving PbX2 in an HX solution, and heating and stirring a flask in an oil bath until a solid is completely dissolved; neutralizing 4-(aminomethyl)-pyridine with an HX solution, adding the neutralized 4-(aminomethyl)-pyridine into the PbX2 solution, and stirring; and naturally cooling the solution, and drying without stirring. The invention further provides a one-dimensional perovskite method luminescent material luminescent color gamut tuning method. The invention also provides a multi-color-gamut-covered perovskite luminescent material and an application of the multi-color-gamut-covered perovskite luminescent material in preparation of photoelectric devices. The material is easy to prepare, emission covers a wide color gamut at normal temperature and normal pressure, the photoelectric characteristic of the material can be adjusted through high-pressure treatment, and the adjustability of the emission color and the emission intensity of the perovskite material under high pressure are remarkably enhanced.

The invention relates to the technical field of environment monitoring, and discloses an expandable environment monitoring system device which comprises a supporting assembly and a meteorological monitoring assembly, the supporting assembly comprises a longitudinal supporting pipe, a rope, a spacing base plate, a longitudinal connector and an end, and the longitudinal supporting pipe, the longitudinal connector and the spacing base plate are sequentially connected from bottom to top to form a support; environmental parameters can be monitored, local or overall high-precision environmental parameter measurement in any size range can be realized, and the implementation is better; the shielding to the environment of the measured target is small, so that the environment information in a certain space is not lost; the multiple trapezoid environment monitoring structures are parallel and can form a plane trapezoid structure or an annular trapezoid structure, rigid fixing and flexible folding of the environment monitoring device are facilitated through the spacing base plates and the end elastic ropes, rapid folding and unfolding can be achieved, the supporting assemblies cannot move through end fixing when the environment monitoring device is unfolded, and the environment monitoring device is convenient to use. Therefore, full-coverage and full-surrounding monitoring of an environment monitoring area is realized.

The invention provides a super-lens based on a double-coupling structure, and relates to the field of optical zooming, the super-lens comprises a substrate and a phase wave front arranged on the substrate, the phase wave front is composed of a plurality of nano-columns arranged periodically, a corresponding phase distribution value is given according to the position point of each nano-column, and the phase distribution value is calculated according to the position point of each nano-column. The phase wavefront is arranged on the substrate, the phase wavefront is arranged on the substrate, the phase wavefront is arranged on the phase wavefront, the nanometer columns are arranged on the phase wavefront to convert plane waves incident to the phase wavefront into light beams focused at a specified focal length, each nanometer column has the same rectangular cross section, a slit is formed in the long axis direction of each nanometer column, and the slits penetrate through the nanometer columns and extend to the surface of the substrate. And thus, the nano-columns form a double-coupling structure. According to the invention, the focusing efficiency of the super lens can be improved.

The utility model provides a pipeline cutting device, and relates to the technical field of cutting devices. A cutting part is fixed on the workbench; the cutting part is composed of a rail, a mounting arm, a motor, a threaded rod, a first electric cylinder, a mounting block and a cutting machine, the rail is welded to the top end face of the workbench, the mounting arm of an L-shaped structure is slidably connected into the rail, the motor is fixed to the left end face of the rail, the threaded rod is fixed to a rotating shaft of the motor, and the threaded rod is in threaded connection with the mounting arm; the stability of the pipe fittings in the cutting process is guaranteed, supporting and fixing of the pipe fittings with different lengths are achieved, adjustability is high, and the situation that the cutting precision is affected during cutting due to the fact that the pipe fittings are suspended in the air is avoided.

The invention relates to a manufacturing method of a three-dimensional spiral directional active ventricular structure, which comprises the following steps of: inducing cells and hydrogel fibers to generate directional arrangement by utilizing internal stress generated by a three-dimensional driving bracket encapsulated in hydrogel; a spiral directional ventricle structure consistent with the natural ventricle in arrangement direction is designed and constructed through the macroscopic shape and the structural unit of the three-dimensional driving stent, active ventricle tissue manufacturing with systolic and diastolic, blood pumping and electrical conduction functions is achieved through in-vitro dynamic culture, and the requirements of tissue repair and in-vitro drug testing are met.

The invention discloses a plate cutting device with a positioning mechanism, and belongs to the technical field of plate cutting, the plate cutting device comprises a cutting seat, a plate groove is formed in the top surface of the cutting seat, and a moving groove is formed in the cutting seat; according to the plate cutting device, the four stable walking assemblies are arranged on the two sides of the cutting structure correspondingly, through the design, the whole device is high in adjustability, cutting can be conducted on different positions of an installed plate, meanwhile, in the cutting operation process, the operation stability of the cutting structure can be continuously guaranteed, and meanwhile the stability of a cut material is guaranteed; the situation that redundant vibration is generated in the cutting process of a cutting material is avoided, the flatness of the cutting face of the material is effectively guaranteed, the whole cutter is protected, the cutting accuracy and precision are improved, meanwhile, in the cutting operation process, the two sides of the cutter can be continuously polished, the sharpness of the cutter is continuously guaranteed, and the cutting efficiency is improved. And the practical application effect of the whole equipment is improved.

The utility model relates to the technical field of blank drying, and discloses blank drying equipment for rare earth foamed ceramic filter production, which comprises a cabinet body, a flow guide structure is detachably connected in a cavity of a drawer, the flow guide structure comprises a first partition plate, an opposite partition plate, a flowing channel and a spacing channel, and the first partition plate and the opposite partition plate are both located in the cavity of the drawer. A water absorbing material is placed in a drawer cavity and is separated through a plurality of first partition plates and opposite partition plates, gas enters the drawer from vent holes and passes through a snakelike bent channel formed by a plurality of flowing channels and interval channels, the gas forms a bent flowing track and continuously changes the direction, the retention time of the gas in the drawer cavity is prolonged, and the water absorbing effect is improved. And the contact area of the gas and the water absorbing material is increased, so that the dehumidification effect on the gas in the cabinet cavity is improved, and the water absorbing material is utilized more efficiently.

The utility model relates to the technical field of eggplant planting, and discloses an eggplant planting side branch remover which comprises a sleeve rod, a lengthened extension rod is arranged on the inner wall of the sleeve rod in a sliding mode, a pruning mechanism is fixedly arranged at the top end of the lengthened extension rod, and the telescopic length of the lengthened extension rod on the inner wall of the sleeve rod can be adjusted. And the surface of the sleeve rod is fixedly connected with a grip. Through the arrangement of the sleeve rod and the lengthened extension rod, the height of the pruning mechanism can be adjusted through the lengthened extension rod, so that a worker can conveniently prune side branches at different heights on an eggplant tree, a climbing tool is not needed, meanwhile, the worker can grasp the sleeve rod with one hand and grasp the grip with the other hand in the using process, and the work efficiency is improved. The operating rod is pulled downwards by fingers, and then the operating rod is used for pulling the pull rope to drive the movable blade to move downwards, so that the side branches are sheared by the movable blade and the cutting plate, the aim of saving labor is fulfilled, the operation is convenient, and the working efficiency is improved.

The invention relates to a magnetic suspension rack scaling prototype test platform for vibration isolation of a steam turbine, and the platform is characterized in that an upper rack and a lower rack in a basic structure of a suspension rack are connected through a plurality of electromagnets, and are used for introducing active control electromagnetic force between a vibration source and a load to realize structural support; each electromagnet is provided with a suspension vibration sensor which is used for collecting electromagnet suspension gap and vertical vibration data, when a steam turbine generator unit bearing platform bears a vibration excitation source, the suspension vibration sensors collect electromagnet suspension gap signals and acceleration signals in real time, and the signals are received, processed and transmitted through a control panel FPGA chip. And the DSP performs real-time current calculation based on the signals given by the FPGA, generates corresponding PWM waves after completing calculation based on the real-time suspension gap and acceleration signals of the suspension electromagnet, acts on the driving plate, controls the on-off of the power switch IGBT, generates corresponding control current and outputs the control current to the suspension electromagnet for suspension vibration isolation.

The utility model relates to the technical field of medical apparatus and instruments, and discloses a DSA high-pressure radiography injection device capable of adjusting flow velocity, which comprises a high-pressure needle cylinder, a push rod is slidably connected in the high-pressure needle cylinder, a fixing plug is fixedly connected in the high-pressure needle cylinder, an installation sleeve is fixedly connected on the outer wall of the high-pressure needle cylinder, and the high-pressure needle cylinder is fixedly connected with the installation sleeve. A protective sleeve is fixedly connected to the interior of the mounting sleeve, a rotating rod is rotatably connected to the interior of the protective sleeve, a main bevel gear is fixedly connected to one end of the rotating rod, a first rotary knob is fixedly connected to the other end of the rotating rod, and a first threaded rod is rotatably connected to the interior of the protective sleeve. According to the high-pressure radiography injection device, the first rotary knob is rotated, the main bevel gear drives the first threaded rod and the auxiliary bevel gear to rotate, then the clamping plug is driven to move up and down, the problem that most of existing high-pressure radiography injection devices cannot regulate and control the internal flow speed of the high-pressure needle cylinder is solved, the adjustability of the devices is improved, and the devices are convenient to use.

The invention discloses a vortex transmitting device for quickly constructing a focused vortex acoustic beam, which comprises an excitation signal circuit, a circular transducer, a lower discrete acoustic lens and an upper discrete acoustic lens, through the design of the lenses, any order vortex acoustic beam with topological charge of-3 to + 3 can be expected to be generated in an underwater acoustic communication system; the flexibility and adaptability of communication are improved. The invention provides an innovative solution for the development of an underwater acoustic communication technology, has important technical significance and application potential, not only obviously enhances the stability and anti-interference capability of the signal, but also ensures that the signal keeps high integrity during long-distance transmission in a complex underwater environment.

The invention discloses a cesium lead halide perovskite quantum dot glass optical fiber and a preparation method thereof. Component elements of the perovskite quantum dots are added into a borosilicate glass system to generate Cs < + >, Pb < 2 + > and halide ions, reagents are adjusted according to the types of the needed perovskite quantum dots, and the optical fiber is obtained after sufficient grinding, high-temperature melting, cooling and wire drawing. Then, the glass optical fiber with the perovskite quantum dots uniformly distributed in size and density can be obtained through a heat treatment process; the preparation method is simple, the price is low, quantum dot crystallization is controllable, and the prepared optical fiber has very strong adjustability of fluorescence peaks and broadband and has application prospects in optical fiber lasers.

The invention discloses an assembly type foundation pit supporting structure and a supporting method thereof.The supporting structure is distributed in the transverse direction and the longitudinal direction of the inner side of a rectangular foundation pit in a surrounding mode and comprises a first supporting component and a second supporting component; the first supporting component comprises a plurality of main components distributed in a rectangular shape and corner connecting components used for connecting the transverse edge corners and the longitudinal edge corners of the main components. The second supporting component is arranged in the depth direction of the foundation pit and comprises a second supporting plate, a T-shaped frame, a sliding plate, a sliding frame A, a sliding frame B, a handle, a rotating rod, a worm, an arc-shaped worm gear, a swing rod and an adjusting ejector rod, the T-shaped frame is installed on the top side of the first supporting plate in a sliding mode, and adjusting grooves are formed in the two sides of the T-shaped frame. The method has the remarkable advantages in the aspects of construction speed, installation convenience, flexible adjustability and structural stability, the construction cost can be greatly reduced, and the construction safety can be improved.