104results about How to "Eliminate security risks" patented technology

The invention discloses a permanent magnet rotor surface-mounted magnetic steel mounting structure and method, and belongs to the technical field of motors, the permanent magnet rotor surface-mounted magnetic steel mounting structure comprises a rotor, a magnetic steel guide assembly is arranged above the rotor, the magnetic steel guide assembly comprises a plurality of pieces of simulation magnetic steel, the magnetic steel guide assembly is used for mounting magnetic steel to be mounted, and a mounting assembly is arranged at the bottom of the rotor. A plurality of locking assemblies are arranged on the mounting assembly, a plurality of magnetic steel mounting parts are arranged on the rotor, magnetic steel and a magnetic yoke before mounting are separated through a magnetic steel guide assembly tool, in the matching process of the magnetic steel and the magnetic yoke, the hand is evacuated to a safe position, safety risks are avoided, a magnetic steel pushing mode is not adopted, adsorption is prevented through a non-magnetic-conductive material, and the magnetic steel is prevented from being damaged. Glue pressing is used for replacing glue pushing, smooth installation of the surface-mounted magnetic steel is achieved, material loss is avoided, and the phenomenon that poor installation is prone to occurring in the mutual exclusion process of the magnetic steel, and the performance of a motor is affected is avoided.

The invention discloses an in-reactor fuel irradiation test loop based on the working condition of a pressurized water reactor. The in-reactor fuel irradiation test loop comprises a main circulation system, a purification system, a fission substance release monitoring system, a water supplementing system, an emergency cooling system, a cooling water system, an in-reactor device pressure failure online monitoring system, a reactor shutdown protection system, a thermal parameter measurement system, a power supply system and an air ventilation and exhaust system. According to the loop, a pressurized water reactor working condition environment is realized, and various technical indexes such as temperature, pressure, flow velocity and water quality required by fuel test are ensured to be reached; the safety level of each system is reasonably configured, so that the requirements of laws and regulations are met, and the safety performance of the loop is improved; by reasonably arranging a multi-stage cooling water system, an air exhaust system and the like, the radioactive activity of an exhaust flow is reduced, the environmental safety is ensured, the release of radioactive aerosol in a process is eliminated, the exposure dose of workers is reduced, the safety of the workers is ensured, the safety risk of devices in the reactor to the reactor under the working condition of a fracture accident is eliminated, and the reliability of the system is improved.

The utility model relates to the technical field of pipeline polishing, in particular to a pipeline inner wall polishing device which comprises a fixing rod, the fixing rod is provided with two sets of retractable and expandable moving structures distributed in parallel, a polishing structure is arranged between the two sets of moving structures, and each moving structure comprises a plurality of hinge seats rotationally connected with moving wheels. The grinding device further comprises a contraction and expansion mechanism for synchronously adjusting the included angle between the multiple hinge rods and the fixing rod, the multiple sets of grinding structures are arranged and arranged between the two opposite hinge seats in the two sets of moving structures, and each grinding structure comprises a U-shaped frame. The pipeline inner wall polishing device can be directly supported on the two sides of the welding position of the pipeline inner wall and rotate circumferentially along the pipeline inner wall, the welding position of the pipeline inner wall can be conveniently polished during circumferential rotation, the polishing efficiency is improved, meanwhile, the safety risk of pipeline carrying during pipeline polishing is eliminated, and meanwhile energy consumption is reduced.

The invention belongs to the technical field of offshore refueling, and discloses helicopter offshore platform refueling equipment, and a bearing bracket of an oil storage unit of the helicopter offshore platform refueling equipment comprises a fixed bracket, a sliding bracket for mounting a tank box assembly and a release mechanism; a first sliding face is arranged on the fixed support, the sliding support is arranged above the fixed support and provided with a second sliding face matched with the first sliding face, the releasing mechanism has the state of locking the sliding support and the state of releasing the sliding support, and the sliding support can slide down along the fixed support under the action of self gravity when being released. The pump skid unit of the refueling equipment is used for pumping fuel oil in the tank box assembly into the refueling skid unit, and finally refueling is conducted on the helicopter through the refueling gun. An electrostatic grounding protection reel is arranged in the refueling pry unit, the refueling gun is communicated with an outlet of the oil pump assembly, the electrostatic grounding protection reel comprises a grounding clamp, and a grounding needle is arranged on the inner wall of the clamping end of the grounding clamp in a protruding mode. The refueling equipment can deal with safety accidents in emergency, reduce the risk of electric shock and eliminate potential safety hazards.

The invention discloses an axle machining intelligent production line for a rail transit vehicle. The intelligent production line comprises a V-shaped block conveyor, an automatic hoisting robot, a milling machine machining equipment area, a lathe machining equipment area, a vertical layered intelligent storage warehouse, a shuttle type axle transporter and an axle automatic transfer trolley. The equipment is relatively low in investment and maintenance cost, relatively low in manpower cost of unmanned operation hoisting, and capable of eliminating the safety risk caused by frequent mixed operation of hoisting machinery and personnel in the past. And intelligent control can be achieved through a remote terminal, 24-hour all-weather operation is achieved, and the lifting rhythm and the lifting efficiency are greatly improved.

The utility model belongs to the technical field of ferrous metallurgy, and relates to a crane beam deashing device which is matched with a crane device for use, the crane device comprises a crane girder, a crane arranged on the crane girder and walking wheels used for walking of the crane, and the walking wheels are installed on a track. The pulse bag type dust collector and the multi-stage centrifugal fan are installed on the crane, the pulse bag type dust collector is connected with vacuum suction nozzles through a pipeline arranged on a girder of the crane, and the vacuum suction nozzles are arranged on the two sides of walking wheels; the bottom of the pulse bag type dust collector is further connected with an ash conveying pipeline quick-change connector and a nitrogen pipe quick-change connector through gate valves. According to the utility model, the vacuum suction nozzles are arranged on the two sides of the walking wheels, and the dust removal equipment is arranged on the crane girder, so that the accumulated dust of the crane girder is reduced, the labor intensity of workers is reduced, the accumulated dust of the crane girder is automatically cleaned, and the safety risk is eliminated.

The invention discloses a coal mine unplanned power failure intelligent identification and alarm method and system, and relates to the technical field of coal mine monitoring, and the method comprises the following steps: collecting the power data of a coal mine, and generating a circuit curve; and analyzing the circuit curve, determining abnormal information of the unplanned power failure, and giving an alarm prompt. According to the invention, omen information of unplanned power failure is accurately identified, an alarm is given in time, processing is carried out in time, the coal mine production process is prevented from being influenced, safety risks caused by sudden power failure are eliminated, comprehensive monitoring and intelligent analysis of a coal mine power system are realized, the safety and stability of the power system are improved, and the power system safety and reliability are improved. And a powerful guarantee is provided for safe production of a coal mine.

The application relates to the technical field of a wire drawing verticality detection device, and discloses a wire drawing machine wire drawing verticality detection device, which comprises a curved extension plate, the end of the curved extension plate is rotationally connected with a push plate, the bottom of the curved extension plate is rotationally connected with a push rod, the end, away from the curved extension plate, of the push rod is rotationally connected with a bent rod, and the lower surface of a protection telescopic plate is fixedly connected with a supporting telescopic rod. The protection mechanism is arranged, when the lifting frame moves upwards, the pull ring is driven to move upwards, at this time, the pull ring pulls the protection telescopic plate to extend upwards, so that the same height as the whole metal wire is ensured, the setting of the protection telescopic plate effectively prevents the metal wire from being excessively stretched, broken and splashed to both sides by the elastic force, the metal wire is blocked by the protection telescopic plate, and the safety hazard is eliminated.

The invention discloses an inspection well cover device and a detection method. The inspection well cover device comprises an upper cover ring, a well cover and an anti-falling device. The well lid is hinged to the anti-falling device through a hinge. A cavity is formed in the surface of the side, facing the inspection well, of the well lid, a through hole is formed in the surface of the side, facing the inspection well, of the cavity, a sealing device is arranged in the cavity and comprises an upper sealing plate and a lower sealing plate, and a connecting column is connected between the upper sealing plate and the lower sealing plate. A gas pipeline is arranged in the connecting column in the axial direction, a gas inlet hole and a gas outlet hole are formed in the surface of the connecting column, the lower sealing plate is arranged on the through hole, and the upper sealing plate is movably embedded in the well lid. A second sensor is further arranged on the surface of the side, facing the inspection well, of the cavity. The problem that the methane gas cannot be detected due to the fact that the water level overflows the sensor in the prior art is fundamentally solved.

The utility model provides a kind of assembly T beam negative bending moment tensioning construction work frame, left front and left rear retractable chain are pulled to left front and left rear movable guardrail right upper, and then left movable guardrail and bottom left movable platform are pulled to right upper, so that left movable guardrail is close to front and rear fixed guardrail right upper, bottom left movable platform is rotated into inclined state right upper, right front and right rear retractable chain are pulled to right front and right rear movable guardrail left upper, and then right movable guardrail and bottom right movable platform are pulled to left upper, so that right movable guardrail is close to front and rear fixed guardrail left upper, bottom right movable platform is rotated into inclined state left upper, folding is realized, and then assembly T beam wet joint position can be lowered, and it can be unfolded after being lowered.The utility model can eliminate safety risk, prevent the occurrence of safety accident, and ensure that assembly T beam negative bending moment tensioning construction work is carried out normally and safely.

The application provides an XGBoost training method and system based on multi-party privacy protection, and belongs to the technical field of machine learning; a key pair is generated for each user by encoding feature values in a one-hot encoding mode; data is encrypted by using a single instruction multiple data method and uploaded to the cloud; for a partition scene corresponding to a data type of the encrypted data, the encrypted data of each user is aggregated to construct an encrypted data set; based on the encrypted training set, a secure training algorithm is used to generate an XGBoost model in a ciphertext state for encrypted prediction services; wherein the secure training algorithm comprises secure gain calculation, secure division calculation, secure sigmoid calculation and secure tree building calculation. The private data of multiple participants can be encrypted respectively, privacy leakage caused by direct use of plaintext data is avoided, and the encrypted data can be used for offline training after being uploaded, so that practicability and deployment flexibility are considered.

The invention belongs to the technical field of dibromohydantoin production, and particularly provides a dibromohydantoin synthesis method which comprises the following steps: S1, preparing a raw material aqueous solution, namely respectively mixing dimethyl hydantoin, sodium bromide and liquid caustic soda NaOH with deionized water to form a dimethyl hydantoin aqueous solution, a sodium bromide aqueous solution and a liquid caustic soda NaOH aqueous solution; s2, premixing the raw material aqueous solution, namely mixing the aqueous solution of dimethyl hydantoin, sodium bromide and caustic soda liquid NaOH prepared in S1 to obtain a premix; s3, electrochemical in-situ bromination reaction: introducing the premix into a micro-channel reactor provided with an electrolysis electrode, and applying current to the premix to obtain a dibromohydantoin initial solution; and S4, crystallizing, separating and drying the product, carrying out cooling crystallization through a three-stage stepped cooling method to obtain a dibromohydantoin crystal, carrying out centrifugal separation to obtain a dibromohydantoin wet product, and then drying to obtain a dibromohydantoin finished product. The method can improve the generation stability and the product quality of the dibromohydantoin.

The application discloses a top-opening drum washing machine inner drum positioning method and a washing machine. The method comprises the following steps: after setting a washing program, the inner drum is controlled to rotate at a preset low speed; the rotation angle of the inner drum is collected and the deviation of the rotation angle from a target angle is calculated; the motor speed is controlled by PID closed-loop regulation with feedforward compensation based on the deviation, wherein the feedforward compensation amount is calculated according to the load weight, the speed fluctuation and / or the deviation change rate; when the deviation is less than a preset threshold, segmented braking is performed until the inner drum is locked at the target angle position; if the locking fails, the inner drum is reversely rotated to a preset angle, and the segmented braking is retried with corrected braking parameters. The application combines PID regulation with feedforward compensation and segmented braking, introduces a failure retry and parameter self-adaptive correction mechanism, and realizes high-precision, impact-free and high-reliability positioning of the inner drum.

The ignition powder damping structure for the solid engine ignition device comprises a damping support and a damping ring, the damping support is a cylindrical body, the top end face, the bottom end face and the cylindrical face of the cylindrical body are each of a hollowed-out structure, ignition powder is placed in the cylindrical body, and the inner shape face of the cylindrical body is matched with the outer shape face of the ignition powder; the damping ring is an annular body matched with the cross section of the damping support in shape. The damping support is installed in a shell of the ignition device, and the damping ring is installed between the damping support and a top cover of the ignition device. According to the technical scheme, the ignition powder of the ignition device can be prevented from being damaged by cracks, fragmentation and the like due to vibration, impact, overload and the like under the transportation and use working conditions, and the structural integrity of the ignition powder of the ignition device is ensured.

The invention relates to the technical field of circulating carriers, and discloses a rollover self-unloading type goods standardized circulating logistics carrier which comprises a logistics carrier body used for goods transportation, the logistics carrier body is a rectangular box body composed of a bottom frame and a frame installed on the periphery of the bottom frame, and the upper end face of the box body is open and used for bearing and transporting goods; a side frame door is arranged between two adjacent side frames of the box body, the upper end of the side frame door is rotatably connected with the upper ends of the two side frames through a rotating shaft, the lower end of the side frame door and the box body are detachably connected with a bottom frame through two sets of self-locking mechanisms, each self-locking mechanism comprises a connecting rod, and the connecting rods are rotatably connected with the bottom frame of the box body through a first support. And a lock catch is vertically and fixedly mounted at one end of the connecting rod. During unloading, the box body is inclined towards one side of the side frame door around the second bracket; the first chain is loosened, so that the connecting rod rotates under the action of gravity, and the lock catch is automatically separated from the side frame door; and the side frame door is automatically opened under the action of gravity.

The utility model discloses a portable wall line drawing tool, which aims to solve the technical problems of high risk and low efficiency in high-altitude line drawing operation in the prior art. The tool mainly comprises an extension module, a sliding module and an extension rod. The core improvement lies in that the extension module is composed of an extension outer box with a sliding groove and an extension inner box sleeve with a sliding groove. By setting a smooth transition groove at the end of the extension inner box, smooth sliding of the sliding module in the full length range of the extension is realized. The sliding module is internally provided with an elastic line drawing module (such as a line drawing roller or a line drawing pen) and a lever type constant pressure ink supply mechanism, which ensures that the line drawing head can adapt to the concave-convex wall surface, keeps the line drawing pressure stable and the ink supply uniform. In addition, the level, laser and continuous scale line are integrated, which assists in rapid and accurate positioning. The utility model can enable the operator to safely complete the continuous and smooth line drawing operation on the high wall surface on the ground, and significantly improves the construction efficiency and quality.

The invention belongs to the technical field of metal material processing, and relates to a cold-rolled brittle strip steel coiling system, which comprises an output assembly for outputting strip steel; the guide assembly is used for guiding the strip steel; the guide assembly is adjacent to the output assembly; the shearing assembly is used for shearing the strip steel; the shearing assembly is adjacent to the guide assembly; the wiping assembly is used for wiping the strip steel; the wiping assembly is adjacent to the shearing assembly. According to the cold-rolled brittle strip steel coiling system, the strip steel coiling success rate is increased, the broken strip processing time is shortened, the effective operation rate of a rolling mill is increased, and the safety risk brought to operators when broken strip fragments are processed is eliminated.

The utility model relates to the technical field of plastic processing discloses an automatic expansion machine of insulating tube with automatic feeding, including main part assembly, including expansion machine body, expansion machine body one side is fixed with switch, expansion machine body one side is fixed with the material collecting box, feeding assembly, set up in expansion machine body, including feeding piece, the feeding piece includes the feeding roller. The utility model has the advantages that: a plurality of insulating tubes are placed in the special storage box in advance, the insulating tubes can be discharged from the storage box one by one to realize automatic feeding, which is convenient for operators to take, and the whole insulating tube expansion work can be carried out more efficiently and smoothly, the work efficiency and the convenience of operation are effectively improved, and the surface of the insulating tube can be prevented from being contaminated by dust, impurities and other foreign matters, the quality of the insulating tube is guaranteed, the insulation performance is maintained, and the risk of potential safety hazards caused by subsequent wrapping wire cores is eliminated.

A method for the synergistic lithium and phosphorus supplementation and targeted regeneration of lithium iron phosphate (LFP) cathode materials is disclosed, involving a regeneration and repair method for retired LFP cathode materials. This method aims to address the technical problems of poor uniformity, poor electrochemical performance, and poor safety associated with existing direct regeneration methods for retired LFP cathode materials. The method comprises: 1. Cathode material stripping and crushing; 2. Preparation of an aqueous repair solution using a reducing agent, lithium salt, and phytic acid; reaction of the degraded LFP black powder in the repair solution; filtration, drying, and segmented sintering to completely reconstruct the material's intact crystal structure and coat it with a highly conductive carbon layer. The regenerated LFP cathode material exhibits a discharge specific capacity of up to 149.7 mAh g⁻¹ at a current density of 1 C. ‑ ¹, and it is cycle-stable, making it suitable for use in the battery industry.

The invention provides an execution device for automatic heating and sleeving of ring parts, the execution device comprises a quick-change mechanism, a fixed main body mechanism, a floating adjustment mechanism and a holding and external supporting mechanism, and the whole quick-change mechanism is connected with a target robot through a quick-change module main body; the propeller is configured to be capable of driving the sliding fastening plate to move in the preset direction of the fastening plate sliding block. The distance between the quick-change module mounting plate and the sliding fastening plate is increased, and the second end of the conical fastening pin is driven to move towards one side of the first end, so that the abutting force between the conical hole and the conical fastening pin is increased; the enclasping and outer supporting mechanism comprises an enclasping and outer supporting driver and an enclasping and outer supporting assembly, and the enclasping and outer supporting driver and the enclasping and outer supporting assembly are fixed to the tool fixing mother plate; the execution guide mother block is driven to move through the enclasping and outer supporting driver, the enclasping execution block can retract inwards so as to enclasp the target axle, and the outer supporting execution block expands outwards synchronously so as to support the target mounting piece.

This invention provides an anti-static endoscope camera system host, relating to the field of endoscope technology. It includes a housing with four terminals mounted on its side wall. The side wall of the housing has a grounding structure, which includes a conductive frame, a conductive component for conducting static electricity, a discharge block for discharging static electricity, and a protective component for shielding the discharge block. The conductive frame is electrically connected to the housing and is made of copper. The inner wall of the conductive frame has a conductive component, which includes a retaining plate slidably connected to the inner wall of the conductive frame. The retaining plate is also made of copper. This invention, by setting a grounding structure, can promptly conduct static electricity generated on the housing to the ground, thereby minimizing the accumulation of static electricity on the housing and preventing damage to electronic components inside the housing. This extends the service life of the host and, to a certain extent, eliminates safety hazards.

The utility model provides a connecting structure of a steel structure overhaul layer, which comprises a platform steel davit, a cantilever beam, a connecting steel beam and a positioning connecting assembly, the other end of the cantilever beam abuts against the connecting steel beam and is fixedly connected with the connecting steel beam through the positioning connecting assembly. The cantilever beam can be welded to the platform steel davit in advance, the welding quality between the cantilever beam and the platform steel davit is improved, residual stress is reduced, meanwhile, the most unfavorable stress area is avoided, the safety risk of a hoisting platform is eliminated, and meanwhile the welding amount in the field hoisting construction process is reduced; due to the fact that the cantilever beam is arranged between the connecting steel beam and the platform steel davit, the distance between the connecting steel beam and the platform steel davit is long, hoisting is more convenient, the construction efficiency is improved, positioning is provided for butt joint and installation of the connecting steel beam through the positioning connecting assembly, and the construction efficiency is further improved.

The invention provides a horizontal furnace hot-state roller changing device and method.The roller changing device comprises a recycling bin and a pushing bin which are arranged side by side, the recycling bin is used for storing old furnace rollers extracted from a hearth, the pushing bin is used for storing new furnace rollers to be replaced, and the recycling bin and the pushing bin are adjacent side by side; the complete replacement process of pulling out an old furnace roller and pushing a new furnace roller can be completed, and one-time hoisting disassembly and reassembly are achieved. The two sets of operation procedures do not interfere with each other and are connected with each other, the transfer problem of old furnace rollers does not need to be considered midway, replacement time can be greatly shortened, and efficiency is improved. And meanwhile, corresponding heat insulation measures are set for the recovery bin, so that the recovery bin can adapt to hot-state roller replacement in a non-stop state, the whole roller replacement process is completed through remote control, safety risks are eliminated, and damage to operators caused by high temperature is avoided. In addition, the roll changing device is small in size, can adapt to various working environments with narrow spaces, and is high in adaptability.

The invention discloses a roll bending cylinder replacement device and method for a hot continuous rolling production line, which is applied to the field of hot continuous rolling production lines, and comprises a support frame, a hanger plate and a connecting plate, the hanger plate is mounted on a rolling mill main frame, and the connecting plate is fixedly arranged on the hanger plate; one end of the cross beam is mounted on the support frame, and the other end of the cross beam is mounted on the connecting plate; the first rail trolley and the second rail trolley are both movably arranged on the cross beam and can slide in the extending direction of the cross beam; the first hoisting component is mounted on the first rail trolley and is used for hoisting the roll bending cylinder; the second hoisting component is mounted on the second rail trolley and is used for leveling the roll bending cylinder; and the driving part is alternatively arranged on the first rail trolley or the second rail trolley. According to the roller bending cylinder replacing device, the whole roller bending cylinder replacing process is more reasonable, the operation difficulty is effectively reduced, and the overhauling quality is guaranteed; the safety risk caused by replacing the bending roller cylinder by hoisting the carrying pole beam can be effectively eliminated, and the accident potential is eliminated.

The utility model belongs to the technical field of angle steel production lines, particularly relates to a shearing device for an angle steel production line, and aims to solve the problems that in the using process of an existing shearing device, sheared angle steel is inconvenient to automatically collect and needs to be manually carried, so that sharp edges of the sheared angle steel are easily scratched, and large risks exist. According to the scheme, the device comprises a machining table, a support and a collecting box, the support is fixedly installed at the top of the machining table, and the collecting box is installed on one side of the machining table; the hydraulic cylinder is fixedly installed at the top of the support, and an output shaft of the hydraulic cylinder is fixedly connected with a shearing tool; according to the angle steel shearing and collecting device, the sheared angle steel sections are automatically conveyed to the collecting box while angle steel is pressed and sheared, full-process automation of positioning, shearing and collecting is achieved, the scratch risk caused by manual carrying of sheared parts is thoroughly avoided, and the structure of the device is simplified.

The utility model relates to air treatment equipment technical field especially relates to a kind of hidden nail frameless air conditioner box structure.The utility model is formed by air conditioner box structure of panel, fastening screw, turn bag hole assembly;Panel is connected by fastening screw and turn bag hole with hidden nail type, and the corner of air conditioner box is equipped with reinforcing corner piece to strengthen connection strength, and the inside of panel is equipped with reinforcing rib to promote rigidity, and wind baffle is additionally arranged in box cavity to realize secondary structure strengthening, panel joint is equipped with panel material, panel inter material and sealant to realize heat preservation sealing, and access door and panel assembly form integral sealing structure.The utility model is strengthened by multilayer structure, cancels traditional main frame still guarantee structure strength, and hidden nail design makes the outer surface of equipment without exposed nail head, with aesthetic property and security, all adopt fastener connection without welding procedure, improve production installation efficiency, while heat preservation sealing structure guarantees air treatment effect, and it is suitable for air treatment system in people flow dense place.

The invention discloses a small-displacement flare gas smoke abatement device for a large elevated torch. The small-displacement flare gas smoke abatement device comprises a barrel assembly, a center fire supporting assembly, a silencing cover assembly, an injection smoke abatement assembly and a built-in igniter incandescent light assembly. The cylinder assembly is communicated with the flare gas outlet; the exhaust end of the center fire supporting assembly extends into the barrel assembly and sprays air to the center of the barrel assembly. The silencing cover assembly covers the outer side wall of the lower portion of the barrel assembly, and a mounting interval is reserved. The air inlet end of the injection smoke abatement assembly is contained in the installation interval. The air outlet end of the injection smoke abatement assembly extends into the barrel assembly and extends to the top of the barrel assembly. After the device is used, a flare system is slightly improved, effective combustion of flare gas under the working condition that the flow is lower than 1000Nm < 3 > / h can be realized, the use cost of steam is reduced, the cost can be reduced by more than 78%, and no black smoke is generated during combustion, so that the flare gas under the working condition is fully combusted.

This invention introduces a gravity-type wharf fixed crane foundation structure and its construction method. The foundation structure includes a small caisson assembly, a riprap foundation, precast blocks, a breast wall, and a top concrete layer. The small caisson assembly is installed on the riprap foundation. Precast blocks are placed on the riprap foundation on both sides of the small caisson assembly, and a breast wall is installed on each precast block. A top concrete layer is poured on top of the small caisson assembly. The small caisson assembly includes multiple small caissons connected by the poured top concrete layer. A bottom concrete layer is provided inside each small caisson, and embedded reinforcing bars are installed within the bottom concrete layer, which is connected to the top concrete layer via the embedded reinforcing bars. Through this design, this application eliminates the problem of grout leakage caused by deformation or displacement of the formwork during concrete pouring in traditional gravity-type block wharf fixed crane foundation construction, leading to poor sealing at the joint between the formwork and the riprap foundation.

The invention relates to a metal coin stamp stamping machine which comprises a machine box body, a mold disc device, a stamping assembly, a feeding assembly and a discharging assembly are arranged in the machine box body, the mold disc device comprises a mold disc body and a mold disc rotation driving unit, a plurality of stamping cavity channels are formed in the circular track of the disc face of the mold disc body, and the stamping assembly comprises an upper stamping mechanism and a lower stamping mechanism. The upper pressing die mechanism and the lower pressing die mechanism are used for cooperatively pressing blanks in the pressing cavity channel, the feeding assembly comprises a feeding mechanism and a feeding mechanism, the feeding mechanism is used for conveying the blanks to the feeding mechanism, the feeding mechanism is used for inputting the blanks into the pressing cavity channel, the discharging assembly comprises a discharging mechanism and a discharging mechanism, the discharging mechanism is used for picking up coin stamps from the pressing cavity channel, and the discharging mechanism is used for discharging the coin stamps. The discharging mechanism is used for outputting the coins. According to the invention, an integrated automatic integration scheme that the mold disc device, the coining assembly, the feeding assembly and the discharging assembly are assembled in the case body is adopted, and the automatic coining machine has the characteristics of automatic operation, high coining processing efficiency and quality, safe operation, stable operation and the like.

The invention discloses a method for cleaning carbon scale of a nitrotoluene waste sulfuric acid treatment device, and specifically relates to the technical field of chemical industry. The invention adopts the nitrotoluene waste sulfuric acid vacuum concentration treatment device itself and materials for combination, firstly uses hot water to clean out nitro compounds in the device, eliminates the safety risks that may occur when using nitric acid and sulfuric acid mixed acid for cleaning, and utilizes the oxidation side reaction of nitric acid and sulfuric acid mixed acid in nitration technology, so that concentrated sulfuric acid continuously removes hydrogen in carbon scale, and nitric acid continuously oxidizes carbon into gas, so as to achieve the purpose of removing solid carbon scale. The cleaning process adopts material circulation, cooling water cooling ingredients and steam heating, so as to achieve stable and controllable temperature change, eliminate the risk of damage to device equipment during the cleaning process, and thus achieve the cleaning of carbon scale. In addition, the invention also adopts the self-owned device equipment, DCS control system and self-owned materials of the cleaning device for formulating, so as to make the operation simple and the control precise.