117results about How to "Reduce purchases" patented technology

The invention belongs to the technical field of piling machinery, and relates to a pile driver for road and bridge construction and a using method thereof.The pile driver for road and bridge construction comprises a moving trolley and a pile driving frame installed at the end of the moving trolley, a high-pressure rotary power head is installed on the pile driving frame, and a drill rod assembly is installed on the high-pressure rotary power head; the drill rod assembly comprises a first drill rod assembly, a second drill rod assembly and a third drill rod assembly, and the first drill rod assembly comprises a first outer sleeve, a pressing guide pipe, a rotary drainage pipe and a first hollow pipe which are sleeved together from outside to inside. The advantages of rotary drilling rig equipment and drilling equipment special for hard rock stratums are combined, one piece of equipment can be conveniently used for conducting drilling construction operation mode switching, the technical problem that the same drilling equipment is used for completing two kinds of drilling construction operation in different stratum structures is effectively solved, the construction efficiency is improved, and the construction cost is reduced. And the construction cost is greatly reduced.

The invention discloses a treatment process of photovoltaic cell production wastewater, and relates to the technical field of industrial wastewater treatment. Comprising the following steps: treating dilute acid and dilute alkali through a reclaimed water recovery membrane system to obtain first produced water and reclaimed water concentrated water; treating the concentrated acid wastewater and the reclaimed concentrated water through a fluorine-calcium crystallization system to obtain defluorinated concentrated water and calcium fluoride crystals; treating the RO concentrated water and the defluorinated concentrated water by a hardness removal recycling system to obtain hardness-removed concentrated water and second produced water; treating the concentrated alkali wastewater through an alkali recovery membrane system to obtain purified alkali and alkali-removed concentrated water; hardness-removed concentrated water and alkali-removed concentrated water are treated by a comprehensive physicochemical system, and then are sequentially treated by a high-power concentration membrane system and a zero-discharge crystallization system to obtain solid wastes. The photovoltaic cell production wastewater treatment process provided by the invention achieves an economical and feasible zero-emission solution.

The invention belongs to the technical field of civil engineering, and discloses a self-adaptive modified waste slurry carbon sequestration environment-friendly pile and a preparation method and application thereof.The preparation method comprises the following specific steps that (1) waste slurry is sieved, and impurities are removed for standby application; (2) a curing agent is added into the waste mud obtained in the step (1) and mixed to be uniform, modified waste mud is obtained, and the curing agent is prepared from, by mass, 60%-80% of slag, 20%-30% of an alkali activator, 5%-15% of industrial byproduct gypsum, 5%-10% of charcoal and 0-0.5% of a composite additive; and (3) adding the modified waste slurry into a mold, and performing drainage consolidation and maintenance to obtain the self-adaptive modified waste slurry carbon sequestration environment-friendly pile. According to the method, green high-added-value recycling of the waste mud and comprehensive utilization of a large amount of solid waste can be achieved, the treatment cost is reduced while carbon reduction and carbon sequestration are achieved, the soft soil foundation is effectively reinforced and improved, the problem of foundation settlement is solved, and the bearing capacity is improved.

The invention discloses a ternary positive electrode conductive agent of a lithium ion battery, and a preparation method and application thereof, and relates to the technical field of lithium ion batteries. The composite material is prepared from the following raw materials in percentage by mass: 95 percent to 97 percent of LiNiCoMnO2, 1.8 percent to 3.6 percent of SP and 1.2 percent to 1.4 percent of PVDF (Polyvinylidene Fluoride). The preparation method comprises the following steps: mixing and stirring NMP and PVDF to prepare a glue solution; liNiCoMnO2 and SP are added, and the mixture is stirred and mixed into ternary positive electrode conductive agent slurry with the solid content being 65%-70%. Coating an aluminum foil with the slurry, and drying to obtain a positive plate; the preparation method comprises the following steps: mixing graphite, conductive carbon black, CMC and SBR, adding deionized water, stirring and mixing to form slurry with the solid content of 40-50%, coating a copper foil with the slurry, and drying to obtain a negative plate; and carrying out tab welding on the obtained positive plate and negative plate, winding with a ceramic diaphragm to form a roll core, filling the roll core into a shell, injecting an electrolyte consisting of an electrolyte lithium salt and an organic solvent, and carrying out formation and capacity grading to obtain the lithium ion battery. According to the positive electrode conductive agent prepared by the invention, the production cost is reduced, and the cycle performance of the battery is not influenced while the process processing performance is improved.

The utility model relates to a universal pipeline pressing device, which comprises a shell with an annular inner cavity, a pressure detection air nozzle hole, a pressure detection air nozzle, a pressure detection air nozzle, a pressure detection air nozzle and a pressure detection air nozzle, and is characterized in that the inner side surface of the shell is provided with a groove for a pipeline to insert; the rotating disc is rotationally arranged in the annular inner cavity, first conical teeth are arranged on the outer side face of the rotating disc, and first threaded teeth are arranged on the inner side face of the rotating disc; the plurality of adjusting pieces are provided with second conical teeth meshed with the first conical teeth; the multiple clamping jaws are arranged in the shell at intervals in a radial sliding mode; the pipelines with different diameters are inserted into the grooves, the adjusting pieces are rotated to enable the clamping jaws to clamp the pipelines, the ends of the pipelines are fixed into the grooves, at the moment, the pipelines are connected with the bottom walls of the grooves in a sealed mode, air is introduced into the pressure detection air tap holes, and pressurization testing is conducted on the interiors of the pipelines. And a large amount of preparation time is saved, purchase of pressing blind flanges is reduced, and the production cost and the pressing time are saved.

The utility model discloses an automatic deionized water adding device suitable for hydrogen-rich water machine and hydrogen-rich water machine, the automatic deionized water adding device comprises a water electrolysis hydrogen production device and an automatic deionized water adding unit, and the automatic deionized water adding unit can be directly communicated with the water electrolysis hydrogen production device in the hydrogen-rich water machine to provide deionized water for the water electrolysis hydrogen production device; the deionized water self-adding device comprises a heating unit and a condensing unit; a water inlet of the heating unit is connected with the water supply unit, a heater is arranged in the heating unit, a water vapor outlet of the heating unit is connected with the condensation unit, water vapor is condensed in the condensation unit to obtain deionized water, the deionized water outlet is connected with an electrolysis water tank of the water electrolysis hydrogen production device, and the deionized water is automatically added to the hydrogen-rich water machine. Deionized water does not need to be independently added manually; the deionized water self-adding device can be directly suitable for an existing hydrogen-rich water machine, the existing hydrogen-rich water machine needing to be manually filled with deionized water is optimized and upgraded, and good universality and application prospects are achieved.

The invention provides a locked-rotor and calibration device of a large torque sensor for a test bench, which is characterized in that the locked-rotor and calibration device comprises a bench dynamometer, a shafting equipment protection cover, a torque flange, an adapter flange and a calibration arm which are connected in sequence, the side surface of the adapter flange is provided with a locked-rotor device, and the torque sensor is arranged between the adapter flange and the calibration arm; a calibration tension applying device is arranged on the side surface of the calibration arm; a limiting groove used for locked-rotor is formed in the side face of the adapter flange, the locked-rotor device comprises a locked-rotor block and a rotating piece, and the locked-rotor block is pushed to be matched with the limiting groove through rotation of the rotating piece. Safety limiting is achieved by screwing a set screw, operation is easy and safe, and time and labor are saved.

This invention discloses a silicone oil thrust frame, relating to the field of medical device technology. It includes a syringe holder, an adapter holder, and an adapter. A syringe is quickly connected to the syringe holder. The syringe holder is connected to the adapter holder via a long connecting tube. A pagoda connector is quickly connected to the adapter holder. The pagoda connector is connected to the adapter via a short connecting tube. Both the syringe holder and the adapter holder have identical quick-release structures. This invention allows for rapid assembly and replacement of the syringe and adapter, is less prone to damage and detachment, and can quickly adapt to different devices in case of emergencies during surgery, avoiding waste of consumables, prolonged operation time, and reducing procurement costs.

The utility model provides a hub spindle connecting structure of a wind generating set and the wind generating set, and relates to the technical field of wind power generation. The hub and spindle connecting structure of the wind turbine generator comprises a hub, a transition connecting shaft, a spindle and a wheel disk, the hub comprises a shell and a center cavity defined by the shell, the first end, in the axial direction, of the transition connecting shaft penetrates into the center cavity, and the second end, in the axial direction, of the transition connecting shaft is integrally connected with one end of the spindle; the shell and the transition connecting shaft are integrally formed and connected; the radial plate is located in the center cavity, the first end of the radial plate is connected to the first end of the transition connecting shaft, and the second end of the radial plate is connected to the inner wall of the shell. The utility model provides a hub spindle connecting structure of a wind generating set and the wind generating set, which can reduce the cost and improve the overall rigidity.

The utility model relates to the technical field of sodium sulfate solid waste treatment in vitamin C production, in particular to a sodium sulfate solid waste treatment device. The sodium sulfate solid waste treatment device comprises a dissolving kettle, the dissolving kettle is connected with a reaction kettle through a backwashing filter, the reaction kettle is connected with a drying box through a filter, the drying box is connected with a sifter through a pipeline, and the filter is connected with a deamination and denitrification tower through a pipeline. According to the method, solid waste emission is reduced, the environment is improved, and by-products obtained after solid waste treatment are raw materials needed in company production and are reused for production, so that raw material purchase is reduced, the cost is reduced, and good economic benefits, social benefits and environmental protection benefits are achieved.

The utility model discloses a kind of control systems of low-pressure steam recycling, it is related to low-pressure steam utilization technical field;Purpose is to utilize the surplus steam outside steel plant to carry out heat exchange to the condensate water in plant, and the following technical scheme is proposed: including low-pressure steam heat exchanger, the inlet end of low-pressure steam heat exchanger is connected with condensate water system in plant and low-pressure steam system outside plant respectively, and the outlet end of low-pressure steam heat exchanger is connected with deaerator and drain recovery system respectively;Low-pressure steam heat exchanger condensate water inlet end is equipped with inlet water side electric valve, low-pressure steam heat exchanger condensate water outlet end is equipped with outlet water side electric valve, and bypass electric valve, which is arranged in parallel with low-pressure steam heat exchanger, is also provided on condensate water pipeline;Control regulating valve and low-pressure steam inlet electric shut-off valve are arranged in series on steam pipeline outside plant.The utility model has the advantages of efficient heat exchange, heat recovery, steam quality optimization and utilization, water resource recycling, energy consumption reduction and the like.

This utility model relates to a testing device for PLC debugging, belonging to the field of industrial automation equipment. It includes input elements, output elements, and a power supply. The input elements include a digital input section, an analog input section, and a temperature input section. Both ends of the digital input section are connected to one side of a digital input terminal block, and the other side of the terminal block is connected to the PLC's digital input module. The analog input section connects to the power supply and the analog input terminal block; the other side of the terminal block is connected to the PLC's analog input module. The temperature input section connects to a temperature input terminal block; the other side of the terminal block is connected to the PLC's temperature input module. The output elements include relays, indicator lights, and meters. This utility model device is simple in composition, safe, and reliable. Before testing, the PLC to be debugged is connected to the device in place once, and no changes or verification of the wiring are required during debugging.

The invention provides a single-component solvent-free polyurethane hot melt adhesive for a functional fabric coating and a preparation method thereof, the hot melt adhesive comprises the following components by weight: 60%-80% of a polyether or polyester soft segment, 10%-20% of a diisocyanate hard segment, 3%-8% of a cross-linking agent and 1%-3% of a stabilizer compound; the curing agent is an isocyanate-terminated prepolymer and is cured by absorbing environmental moisture. According to the invention, a traditional cloth-film-adhesive multilayer physical compounding process is abandoned, and a functional coating with a micro-phase separation structure is generated in situ on the surface of the base cloth through a direct coating and chemical bonding mechanism of the single-component PUR adhesive, so that the problems that the fabric is easy to delaminate and blister and has plastic feeling are thoroughly solved; according to the present invention, the excellent waterproof gas permeation performance and the extremely soft degree are achieved, the whole process is free of solvent volatilization, the manufacturing cost is substantially reduced, and the extremely high environmental protection and industrial application value is provided.

The invention relates to the field of rare earth smelting wastewater treatment, and discloses a rare earth smelting salt-containing wastewater directional calcium removal and chlorine recovery recycling process which comprises the following steps: S1, standing salt-containing wastewater to obtain supernate; s2, slowly dropwise adding sulfuric acid into the supernate, standing, and filtering to remove calcium sulfate to obtain a calcium-removed solution; s3, the calcium removal solution enters a first-stage electrodialysis system to remove part of chloride ions, and diluted hydrochloric acid is obtained; and S4, filtering the deacidified desalinized solution, feeding the filtered deacidified desalinized solution into a second-stage electrodialysis system to further remove chloride ions, returning the chlorine-containing solution to the first-stage electrodialysis system, and removing chlorine to obtain a purified solution. By adopting a method of coupling directional calcium removal with electrodialysis, efficient directional recovery of calcium ions and chloride ions is realized, and high-purity calcium sulfate and diluted hydrochloric acid are successfully obtained. The process not only solves the problems of difficult treatment, high cost, high energy consumption, poor recycling effect and the like in the traditional smelting wastewater treatment, but also remarkably improves the resource utilization efficiency.

The utility model belongs to the technical field of wood chip unloaders, particularly relates to a full-automatic wood chip unloader, and aims to solve the problems of low efficiency, long labor time of operators, high labor intensity and high safety risk in the background technology, and provides the following scheme: the full-automatic wood chip unloader comprises an unloading platform, and the outer walls of the two sides of the steel platform are both welded with turning plate beams, and hydraulic push rods are hinged between the turning plate beams and the unloading platform. After the truck body is fixed to the steel platform, the hydraulic push rod pushes the turning plate beam to drive the truck body to incline, the inclination angle can be freely set and adjusted by an operator according to material characteristics within a certain range, rapid discharging of wood chips is achieved, manpower and material resources are saved, the unloading time is short, and the unloading efficiency is improved. The production efficiency is high, the unloading cost is reduced, the labor cost and the purchase and maintenance cost of the loading machine are reduced, and the unloading device is suitable for fast and safe unloading of bulk materials in the wood chip industry.

The present invention relates to the field of construction engineering technology, and in particular to a truss precise positioning and installation device, comprising a base, a floor deck and a plurality of trusses, wherein the plurality of trusses are placed on the upper surface of the floor deck from front to back, and the truss precise positioning and installation device also comprises a first support plate, a positioning mechanism, a slide, a transparent plate, a vertical plate, a first guide rod, a second support plate, a roller, a locking sleeve, a positioning bolt, a fastener and a positioning mark line, wherein the first support plate is fixedly connected to the left end of the upper surface of the base; the positioning mechanism is installed inside the first support plate; there are two slides, which are respectively opened horizontally on the front and rear sides of the upper surface of the base; and the transparent plate is embedded in the top of the right side wall of the first support plate along the front and rear direction. It has the function of precise truss positioning, does not have human error, has high truss installation efficiency, can complete the installation of trusses of various specifications, is more widely used, and reduces the pressure of procurement and installation.

The invention discloses a multifunctional PLC expansion device based on an FPGA and a configuration method thereof.The device comprises the FPGA, the FPGA comprises a communication module, a function configuration module, a pulse output module, a serial port module, a pulse counting module and an IO control module, the communication module is used for receiving a configuration instruction, and the function configuration module is used for receiving the configuration instruction; the function configuration module is respectively connected with the communication module, the pulse output module, the serial port module and the pulse counting module, and is used for selectively activating any one of the pulse output module, the serial port module or the pulse counting module according to the configuration instruction; and the IO control module is respectively connected with the pulse output module, the serial port module and the pulse counting module for function output.

The utility model discloses a punching production line convenient to change mould, include, support, material transfer truss, punching die frame, support setting in punching die chassis one side, be provided with first mobile subassembly on the support, and first mobile subassembly includes first guide rail, first sliding seat, and the head of first guide rail projects to the above of punching die chassis, and first sliding seat is matched with first guide rail, can slide on first guide rail, and the number of support is 2 3, and the first guide rail on all supports is parallelly arranged, and material transfer truss is movably fixed on first sliding seat, be provided with second guide rail and the second sliding seat of movable along second guide rail on material transfer truss, be provided with grabbing component on second sliding seat, be provided with punching die area on punching die frame, be used for installing punching die, the utility model has the characteristics such as convenient to change mould, small, low in cost, safe and reliable occupies space.

The utility model discloses a stamping die of fin, including lower die seat, the top of lower die seat is equipped with a plurality of float and sink pin, the top of lower die seat is equipped with the groove of being suitable for with the position of float and sink pin, the top of lower die seat is equipped with the material belt groove, lower die seat is provided with pin angle riveting seat in material belt groove, the top of lower die seat is provided with upper die seat, and upper die seat is fixedly connected with pin angle riveting head on one side close to lower die seat, and material belt groove is provided with SPCC electroplated PIN angle material belt, and the top of lower die seat is provided with fin main body material belt, and SPCC electroplated PIN angle material belt and fin main body material belt are perpendicular distribution, and the first sliding slot and the second sliding slot are seted up on lower die seat, and the first sliding slot is provided with moving block, and the one end of moving block is equipped with the slot. The utility model realizes the high degree of automatic, synchronous integration production of fin stamping and PIN angle riveting, reduces the number of mould and complicated process operation, reduces mould purchase, maintenance and artificial cost.

The utility model relates to a drill rod device of an iron notch drill, which comprises a drill rod, a drill bit, a drill bushing and square cotters, the head of the drill rod is connected with the drill bit through arc threads, a drill rod hole is arranged in the drill bushing, the drill rod is inserted in the drill rod hole in a matched mode, a first square cotter groove is arranged on the drill rod inserted in the drill bushing, and a second square cotter groove is arranged in the drill bushing above the first square cotter groove. A square cotter is inserted into a groove body formed by the first square cotter groove and the second square cotter groove, one end of the square cotter is clamped with the side wall of the drill bushing, and the other end of the square cotter is limited through a clamping pin. According to the utility model, not only can the axial movement of the drill rod be limited, but also the radial run-out of the drill rod can be limited. The gap between the drill rod and the rotating sleeve is small, the drill rod shakes slightly, and the drill hole does not deflect. Disassembly and assembly are fast and convenient, maintenance efficiency is improved, and maintenance time is shortened.

The utility model discloses a conveyor belt residual coating recovery type window film coating machine, which relates to the technical field of residual coating recovery, and comprises a coating machine body, a recovery assembly is arranged above the coating machine body, the recovery assembly comprises a driving motor, a power output shaft of the driving motor is in transmission connection with a conical driving gear I through a bearing, and the conical driving gear I is in transmission connection with a transmission shaft. The lower side of the first conical driving gear is movably connected with a first conical linkage gear, and the first conical driving gear and the first conical linkage gear are meshed with each other through a first tooth groove. The conveyor belt residual coating recovery type window film coating machine disclosed by the utility model is provided with the recovery component for recovering residual coating, so that the purchase amount of new coating can be reduced, the production cost is reduced, meanwhile, the recovered residual coating can be reused for production after being treated, the resource recycling is realized, the resource utilization rate is improved, and the production cost is reduced. And more economic values and effects are created.

The application discloses a device for recycling asphalt in waste asphalt mixture, which comprises a main box body, a bottom plate fixed to the lower side of the main box body, a bottom frame fixedly connected to the lower side of the bottom plate for supporting, a feeding hopper fixedly installed at the top rear side of the main box body, and a cooling and conveying mechanism arranged in the main box body for cooling and conveying the asphalt mixture. The cooling and conveying mechanism is used for uniformly cooling the asphalt mixture to zero below, so that the asphalt material becomes brittle and fragile, and the stone material still maintains the original strength at low temperature due to the material characteristics. The extrusion mechanism uses an elastic rotating structure to apply controllable extrusion force to the mixture, the brittle asphalt material is preferentially crushed, and the stone material is hardly damaged in the extrusion process and can fall into a stone collecting hopper in an intact form. The device greatly improves the recycling rate of the stone material, the intact stone material can be directly used for road base or concrete aggregate, and secondary processing is not needed, so that the cost of stone purchase and reprocessing is remarkably reduced.

This invention provides a road petroleum asphalt-based hard-soft carbon composite material, the raw materials of which include road petroleum asphalt, light component small molecule stabilizer, heavy component small molecule oxidant, activator, and solvent; and the ratio of road petroleum asphalt:solvent:light component small molecule stabilizer:heavy component small molecule oxidant:activator is 1:15-25:0.05-0.2:0.05-0.2:2-5, calculated in g / mL / g / g / g. Furthermore, this invention also provides a method for preparing the aforementioned hard-soft carbon composite material, which includes the following steps: crosslinking treatment of the light component, crosslinking treatment of the heavy component, activation, and carbonization. This invention solves the problem in the prior art where the high price or low carbon yield of hard carbon precursors, high cost of oxidants, or complex overall formulations lead to high costs for the prepared asphalt-based sodium-ion battery anode carbon materials. The hard-soft carbon composite material of this invention not only has a lower cost but also combines the advantages of both hard and soft carbon, exhibiting high sodium storage capacity, high reversible specific capacity, high initial charge-discharge efficiency, and good cycle performance.

The utility model discloses a kind of puncture type welding-free joints, it is related to welding-free joint technical field, to solve the problems of existing puncture type welding-free joint complex structure, accessory, high cost. The puncture type welding-free joint includes joint shell and puncture type conducting sheet, joint shell is equipped with containing cavity, containing cavity both ends open, puncture type conducting sheet is installed in containing cavity, and one end of puncture type conducting sheet is equipped with puncture convex tooth;The joint shell on the side of puncture convex tooth is reversely connected with gland. The utility model only includes joint shell and puncture type conducting sheet two core components, simple structure, substantially reduce the number of accessories and production process, reduce production cost;Convenient to operate simultaneously, without professional tool and skill, can quickly complete light bar connection, and connection stability is high, effectively improve use experience, suitable for various connection scenarios of LED soft light bar.

The utility model discloses an auxiliary transfer device which comprises a frame body and at least two supporting assemblies. Every two adjacent supporting assemblies are oppositely arranged; the supporting assembly and the frame body can be connected in a relatively overturning mode. Plug connectors distributed in the height direction of the frame body are arranged at the corners of the frame body; when the supporting assemblies are perpendicular to the bearing face of the frame body, the supporting assemblies can be connected with the inserting ends of the inserting pieces in an inserted mode, and a layer plate is arranged between every two adjacent supporting assemblies in the height direction of the frame body. Compared with the prior art, the transfer trolley has high universality and can be matched with products of different sizes so as to transfer the products, and the production cost is reduced.

The utility model discloses an adjustable grinding disc, which relates to the technical field of grinding discs and comprises a base, a top grinding disc and a bottom grinding disc, the top end of the base is fixedly connected with a support, a hydraulic rod is fixedly mounted in the middle of the top end of the support, and the output end of the hydraulic rod extends to the middle of the bottom end of the support. A top plate is fixedly connected to the outer wall of the bottom of the hydraulic rod, a motor is fixedly installed on the left portion of the top end of the top plate, the output end of the motor extends to the left portion of the bottom of the top plate, and a circular gear is fixedly connected to the output end of the motor. According to the adjustable grinding disc disclosed by the utility model, water can be injected between the two grinding discs and a workpiece under the action of the cooling structure when the grinding discs carry out grinding operation, so that the functions of lubricating and cooling can be further achieved, the friction force and heat in the grinding process are favorably reduced, the workpiece is prevented from being deformed or damaged due to high temperature, and the service life of the grinding disc is prolonged. Meanwhile, the service lives of the grinding disc and the workpiece are prolonged.

The utility model relates to the field of stamping dies, and discloses a stamping die for brake silencing sheet production, which comprises a workbench, a stamping power component is arranged at the top of the workbench, surrounding plates are fixedly connected to the front side and the rear side of the top of the workbench, and an assembly block is fixedly connected to the inner wall of the workbench. A center plate is fixedly connected to the middle of the top end of the assembly block, a motor is fixedly connected to the bottom of the inner wall of the center plate, a gear is fixedly connected to the output end of the motor, communicating columns are fixedly connected to the left side and the right side of the center plate, and moving plates are slidably connected to the left side and the right side of the outer wall of each communicating column; the top of the moving plate is fixedly connected with a U-shaped frame. According to the brake silencing piece stamping die, the gear, the U-shaped frame, the toothed plate, the pull rod and other components are used in cooperation, the adaptability of the stamping die to stamping sizes of different brake silencing pieces can be improved in the using process, purchase of lower die parts is reduced, and the using cost is remarkably reduced.

The invention discloses a heliostat wireless control system and method based on multiple frequency bands. The system comprises an in-situ layer, a convergence layer and an application layer. The in-place layer is a heliostat in-place control layer and comprises a communication gateway, an in-place controller and corollary equipment of the in-place controller; the in-situ layer is based on a cable-free design, and the communication gateway and the in-situ controller are in communication connection through a wireless network; the convergence layer comprises a control center, a switch and a wireless management platform; the control center manages the communication gateway, distributes frequency bands for the communication gateway, and accesses the mirror field optical fiber ring network through the switch to communicate with the mirror field control system; the application layer comprises a mirror field operator station, an engineer station and a mirror field control and scheduling system, and is used for data collection, display and scheduling of the whole mirror field control system. According to the invention, the cost of the mirror field in the aspects of power distribution equipment, cable purchase and construction is obviously reduced.

This invention discloses a multifunctional vertical hydraulic jack and its usage method, relating to the field of hydraulic jack technology. The jack body is equipped with an oil tank and a lifting chamber, with a lifting piston rod slidingly mounted inside the lifting chamber. A pressurizing component draws oil from the oil tank through a suction pipe and pressurizes the hydraulic oil into the lifting chamber through a pressure pipe to achieve lifting. The pressure pipe includes a first pressure chamber, a second pressure chamber, a pressure spring, and a pressure adjusting screw for adjusting the oil circuit flow and pressure. A clearing pipe connected to one side wall of the pressure chamber allows high-pressure hydraulic oil to be discharged to the outside of the jack body for flushing equipment joints or internal oil circuits. A return oil pipe connects the oil tank and the lifting chamber, with the return oil controlled by a return screw. Furthermore, a hollow cavity is provided at the axis of the lifting piston rod, allowing for the detachable installation of a screw to achieve a pulling function. This invention integrates lifting, high-pressure flushing, and pulling functions, improving the practicality and applicability of the jack.

The invention relates to the technical field of constructional engineering, in particular to an accurate truss positioning and mounting device which comprises a base, a floor support plate and a plurality of trusses placed on the upper surface of the floor support plate from front to back. The accurate positioning and mounting device for the truss further comprises a first supporting plate, a positioning mechanism, a slide way, a transparent plate, a vertical plate, a first guide rod, a second supporting plate, a roller, a lock sleeve, a positioning bolt, a fastener and a positioning marked line. The first supporting plate is fixedly connected to the left end of the upper surface of the base. The positioning mechanism is mounted in the first supporting plate; the two sliding ways are transversely formed in the front side and the rear side of the upper surface of the base correspondingly. The transparent plate is embedded in the top end of the right side wall of the first supporting plate in the front-back direction. The system has a truss accurate positioning function, does not have personal errors, is high in truss installation efficiency, can complete installation of trusses of various specifications, is wider in application range, and reduces purchase and installation pressure.