323results about How to "Achieve stability" patented technology

The invention relates to the technical field of automatic loading and logistics control, in particular to an automatic powder loading device based on visual identification, which comprises a visual identification module, a flexible grabbing module, a transfer module and a stacking module, the form, internal distribution and material characteristic data of the powder bag are obtained through a multi-mode sensor, a grabbing path is generated, and grabbing operation is completed through a flexible manipulator; the transfer module dynamically adjusts the transportation state of the powder bag in combination with path optimization and posture monitoring; the stacking module monitors stress of a stacking layer in real time on the basis of the stacking thermal distribution diagram, adjustment suggestion data are generated, stacking position and angle optimization is completed through a self-correction unit, and the stability of a stacking structure is ensured; the powder loading efficiency, the stacking precision and the long-term stability are remarkably improved, and the method is suitable for efficient logistics management of complex loading scenes.

The utility model relates to the technical field of gas turbines, in particular to a self-locking mechanism and a high-temperature fatigue test sample, which comprise a connecting component, a connecting sleeve, a connecting cavity arranged at the bottom end of the connecting sleeve, and a threaded head fixedly connected at the top end of the connecting sleeve, an operation assembly is adaptively mounted in the connecting sleeve, a positioning assembly is adaptively mounted in the connecting sleeve, a limiting assembly is arranged in the connecting sleeve, and a connecting cavity is formed in an inverted trapezoidal shape; when a sample to be tested needs to be installed, only one end of the sample to be tested needs to be inserted into the connecting cavity, the sample to be tested can be installed and fixed by the threaded rod through the operation steps of pressing and rotating, meanwhile, the mistaken touch prevention design can ensure that the threaded rod cannot be mistakenly touched and loosened after being installed and fixed, and the accuracy of experimental data is ensured.

The invention discloses a dual-phase steel forming method and system based on critical zone heat treatment, and relates to the technical field of material heat treatment.The dual-phase steel forming method comprises the steps that material characteristics and geometric dimensions of a to-be-treated workpiece are obtained, and a heat treatment temperature control curve is determined; the method comprises the steps that a heating control area, a heat preservation control area and a cooling control area are configured, small-batch machining is conducted on workpieces to be treated, temperature monitoring and microstructure change collection are conducted, and a plurality of actual heat treatment curves, a plurality of microstructure change sequences and a plurality of dual-phase steel workpieces are obtained; generating a target microstructure change prediction model of the to-be-processed workpiece based on the microstructure change general prediction model; and the to-be-treated workpieces are subjected to mass production, real-time prediction control and overall prediction optimization are carried out, and dual-phase steel forming control is carried out. According to the method, the technical problems of low microstructure control precision and poor process consistency in the heat treatment process of the dual-phase steel in the prior art are solved, and the technical effects of precise forming and performance stability of the dual-phase steel workpiece in production are achieved.

The invention relates to the technical field of micron-sized jet flow and uniform atomization, in particular to a monodisperse uniform fog drop device and an atomization spray head spray hole array arrangement method, and the monodisperse uniform fog drop device comprises a driving source, a liquid supply device and a spray head; the spray head is a monodisperse atomizing spray head, the driving source is an ultrasonic signal generating system, the liquid supply device supplies constant-pressure fluid to the spray head, and the spray head forms monodisperse spray under the driving of high-frequency sound waves of the ultrasonic signal generating system; the spraying hole array arrangement method of the atomizing nozzle comprises the following steps of: setting smaller spraying hole spacing in small deformation areas close to the center of the spraying hole plate and constraint ends on two sides of the spraying hole plate; a large safety distance is arranged in a large deformation area between the restraining end of the spray orifice plate and the center of the spray orifice plate, so that intersection caused by jet flow intersection is prevented. According to the device and the arrangement method, the problems of mutual interference and the like between large-scale array jet flows are solved; the controllability of the size and the speed of the monodisperse atomized liquid drops can be effectively improved, so that macro micro liquid drops with uniform size and concentrated speed are generated.

The invention relates to the technical field of intelligent materials, and discloses a p-MXene conductive ink and BC reinforced polymer composite film and a preparation method and application thereof.The composite film comprises MXene and bacterial cellulose, the surface of the MXene is coated with waterborne polydopamine, waterborne polyurethane is embedded in the bacterial cellulose, and the surface of the MXene is coated with waterborne polyurethane; hydroxyl groups in the water-based polydopamine and amino groups in the water-based polyurethane form hydrogen bonds to connect the MXene with the bacterial cellulose. The composite film obtained by the invention has excellent mechanical properties and electrical properties, and also has comprehensive properties such as electromagnetic shielding and stress-strain sensing.

The invention discloses an ultra-fine grinding thinning grinding wheel and a preparation method thereof.The grinding wheel comprises a grinding wheel base body and tool bit assemblies, a plurality of reserved grooves are formed in the circumferential direction of the grinding wheel base body at equal intervals, and the tool bit assemblies are arranged in the reserved grooves; the tool bit assembly comprises, by volume fraction, 35%-45% of composite abrasive micro powder, 30%-45% of a ceramic bonding agent, 20%-30% of a double-effect pore forming agent, 1%-3% of a filling agent, 1%-2% of a dispersing agent and a temporary bonding agent accounting for 5% of the total weight. Through design optimization of the grinding wheel formula and the preparation method, the better wafer surface quality can be obtained under the ultra-fine grinding and thinning process, and meanwhile, the stability and the long service life of the grinding wheel in the service process are guaranteed; and a composite abrasive material combination and a double-effect pore-forming agent are matched and optimized, so that the optimized superfine abrasive material combination obtains a high-quality grinding and thinning surface, and meanwhile, the stable and long-acting service life is considered.

The invention relates to the technical field of on-machine measurement control, and discloses a V-shaped groove guide rail on-machine machining measurement system and method. The control end of the measuring body is connected to the driving end of a machine tool through a controller, and the measuring end of the measuring body and a grinding wheel of the machine tool are placed in a V-shaped groove of a guide rail to be measured in parallel. The measuring body comprises a sensor and two groups of contraction measuring rod assemblies; the two groups of contraction measuring rod assemblies are correspondingly arranged at the two ends of the sensor respectively and are connected to the control end of the controller through the sensor; and the measuring ends are measuring balls arranged at the end parts of the two groups of telescopic measuring rod assemblies. According to the invention, through integration of measurement and processing functions, real-time measurement can be carried out without interruption of the processing process, so that the overall efficiency of measurement and processing is significantly improved. By means of the mode of measuring and machining at the same time, the conversion time between measuring and machining in a traditional method is shortened, and the production process is accelerated.

The invention provides a reference voltage buffer circuit of a high-precision analog-to-digital converter and a calibration method of the reference voltage buffer circuit, and the reference voltage buffer circuit is characterized in that the inverted input end of a first operational amplifier is connected with a reference voltage, and the output end of the first operational amplifier is in feedback connection with the in-phase input end through a first driving tube and a voltage division circuit; the inverted input end of the third driving tube is connected with the second voltage dividing node, the output end of the third driving tube is connected with grid electrodes of a plurality of third driving tubes and second driving tubes, and drain electrodes of the third driving tubes are connected to the first voltage dividing node through switches; the width-to-length ratios of the second driving tube and the plurality of third driving tubes are in a linear relationship; logic control signals are input into the plurality of switches and are used for controlling the states of the switches to perform linear calibration of the reference voltage. Linear calibration of the output reference voltage is controlled through binary coding, the total resistance is greatly reduced by designing the linear relation between the resistors, and the effects of reducing the chip area and reducing the cost are achieved.

The invention relates to the technical field of box girder bottom web plate manufacturing, in particular to a stirrup clamping longitudinal bar arranging mechanism which comprises a gantry support, an arranging part, a longitudinal bar clamping part and a longitudinal bar clamping part. Comprising an outer side longitudinal bar arranging mechanism, a stirrup fixing mechanism and an inner side longitudinal bar arranging mechanism which are sequentially installed from the two ends of a gantry cross beam to the middle. The stirrup clamping and longitudinal bar arranging mechanism is stable in structure, can achieve smooth coherence and stability in the working process, is beneficial to improving the machining quality and efficiency of a box girder reinforcement cage, achieves the stirrup clamping and longitudinal bar arranging functions, and is beneficial to reducing structural deformation and guaranteeing the box girder production quality; the air cylinder is arranged outside, debugging is convenient, practicability and convenience are improved, and the safety coefficient can be improved.

The invention belongs to the technical field of catalysts, and particularly relates to a Na-modified Zn-coated MFI molecular sieve monatomic catalyst and a preparation method and application thereof. The catalyst is represented by a formula Zn-Na at MFI, Zn and Na are active components, the MFI molecular sieve carrier and Zn are dispersed in the MFI molecular sieve carrier in a monatomic form, and the loading capacities of the active components Zn and Na in the catalyst are 0.1-1 wt% and 0.2-2 wt% respectively. The catalyst provided by the invention realizes 100% of atom utilization rate in a reaction for preparing acetaldehyde through ethanol dehydrogenation, and can realize high-activity, high-selectivity and high-stability generation of a target product acetaldehyde from ethanol under mild reaction conditions. Compared with an existing metal molecular sieve catalyst for preparing acetaldehyde through ethanol dehydrogenation, the catalyst provided by the invention has the remarkable advantages of good stability and high selectivity.

The invention discloses a cloud edge end collaborative computing power scheduling system supporting task dynamic migration, which relates to the technical field of intelligent computing power scheduling and comprises a path modeling module, a conflict identification module, a time sequence checking module, a rehearsal switching module and an interference suppression module, and constructing a routing convergence time sequence profile and a link playback spectrum, modeling an overlapping window of the old path and the new path and a life cycle of a control signal, and generating a path evolution baseline for subsequent conflict identification. By means of path modeling, fingerprint identification, causal check, shadow rehearsal, interference suppression and the like, time sequence consistency of a control instruction and a data stream, continuous path switching and real-time extinguishing of link interference are realized, and the stability and reliability of cloud edge collaborative scheduling are improved.

This invention discloses a dry spinning tunnel and spinning method for large-tow polyimide fibers. The spinning tunnel includes a tunnel body, an air inlet pipe, two first perforated plates, two second perforated plates, and two annular spinnerets. The tunnel body is divided into an upper tunnel, a middle tunnel, and a lower tunnel from top to bottom, which are connected sequentially. The top of the upper tunnel and the bottom of the lower tunnel are both closed. The bottom of the lower tunnel has a filament outlet. The polyimide solution is ejected from the annular spinneret located at the top of the upper tunnel to form a liquid stream. Hot air from the air inlet pipe is blown evenly onto the liquid stream through the first perforated plates. The heating and insulation layers of the upper, middle, and lower tunnels can be adjusted to the corresponding temperatures according to process requirements, which allows the solvent in the large-tow liquid stream to evaporate in time and the filaments to solidify rapidly, thereby reducing filament tangling and achieving spinnability and stability of the large-tow fibers. The production of large tows of polyimide fibers produced by dry spinning of the present invention can be increased by at least 15 times.

The invention relates to the technical field of copper foil production, and provides an intelligent scheduling method and device for copper foil production, computer equipment and a storage medium. An initial intelligent scheduling strategy is simulated and generated based on production data of each piece of copper foil production equipment on a copper foil production line, and primary simulation optimization is performed by using a pre-constructed optimization model; calculating production data and product images before and after optimization to obtain an optimization stopping factor value; when the optimization stopping factor value is greater than a threshold value, performing simulation optimization again by using a pre-constructed optimization model; when the optimization stopping factor value is smaller than a threshold value, iteration simulation optimization is stopped, and a target intelligent scheduling strategy is obtained; and generating an intelligent scheduling instruction based on the target intelligent scheduling strategy and sending the intelligent scheduling instruction to the corresponding copper foil production equipment in real time so as to realize intelligent scheduling of copper foil production. According to the invention, the operation sequence and the operation time of each production device can be automatically adjusted, and intelligent and automatic scheduling of copper foil production is realized.

The invention discloses a matching method and system based on a 5G network, Beidou positioning and non-line-of-sight microwave, and relates to the technical field of target signal positioning, and the matching method comprises the steps: building a static and dynamic combined calibration data set through obtaining high-precision geographic position information and real-time signal intensity data, and carrying out the calibration of the calibration data set; and adaptive direction adjustment and rapid focusing of the antenna are supported, and efficient communication and accurate positioning in a complex scene are realized. The calibration matching model is trained based on the calibration data set, so that the precision and adaptability of the model under multiple geographical environments and non-line-of-sight conditions are improved, an efficient antenna positioning mechanism is provided, and the stability and real-time performance of a communication link are guaranteed; the method is particularly suitable for complex environments such as disaster rescue, accident personnel can be quickly and accurately positioned, and rescue efficiency and action reliability are remarkably improved.

The invention provides a digital quantum simulation method, which comprises the following steps of: performing symmetry analysis and subspace decomposition on a target Hamiltonian to obtain an effective Hamiltonian and a symmetry constraint condition; constructing a target unitary operator according to the effective Hamiltonian, and initializing a quantum circuit population of the target unitary operator; calculating entanglement characteristics of each quantum line in the quantum line population, performing structure variation on the quantum line population based on the entanglement characteristics, and performing line fragment crossing in combination with a symmetry constraint condition to obtain a candidate line set; performing line parameter optimization on the candidate line set based on the fidelity gradient to obtain an optimized line set, and extracting gate distribution structure features of the optimized line set; and non-uniform sampling is carried out on the optimized line set based on gate distribution structure characteristics to obtain a sampling line subset, an optimal quantum line is screened out from the sampling line subset based on the deviation between an experimental observation value and a theoretical expected value, and quantum simulation is carried out based on the optimal quantum line.

The invention discloses a data flow security control method and system based on dynamic trust evaluation, and belongs to the technical field of data security, and the method comprises the steps: obtaining a behavior feature sequence of a data request entity in a fixed time window; constructing a behavior map to identify a typical behavior mode; calculating a risk weight under the context by combining the network topology change, the data sensitivity and the upstream and downstream entity states; inputting the behavior map and the risk weight into a historical trust evolution model to generate a current trust value; matching an access control strategy according to the trust value and the data sensitivity; access operation is executed, and behaviors and results are fed back to the trust model for self-adaptive updating; by introducing a behavior modeling and feedback learning mechanism, dynamic regulation and control and real-time risk response of the data access permission are realized, and the security and intelligence in the cross-domain data circulation process are improved.

The embodiment of the present application relates to the field of battery technology and provides a method for preparing a lithium-ion battery, comprising: winding or laminating a positive electrode sheet, a negative electrode sheet and a separator and then placing them into a shell to form an initial battery cell; in a first liquid injection process, injecting a first electrolyte into the initial battery cell, the components of the first electrolyte including: 0.5wt%~2wt% of vinylene carbonate, 5wt%~15wt% of lithium salt and a non-aqueous organic solvent; performing a formation process on the initial battery cell; in a second liquid injection process, injecting a second electrolyte into the initial battery cell, the components of the second electrolyte including: 5wt%~20wt% of vinylene carbonate, 5wt%~15wt% of lithium salt, 0.005wt%~30wt% of a wetting stabilizer and a non-aqueous organic solvent; wherein, the first electrolyte or the second electrolyte further includes: at least one of 1,3-propane sultone or fluoroethylene carbonate, which is at least conducive to maintaining the lithium-ion battery with high energy efficiency and long cycle life under the condition of low liquid injection amount.

The utility model discloses a bar cutting machine, and relates to the related technical field of bar machining. The device comprises a bottom plate, a positioning cylinder is arranged over the bottom plate, a push plate is slidably arranged at the front end in the positioning cylinder, a cutting machine body is arranged on the front end face of the positioning cylinder, an abutting plate connected with the upper surface of the bottom plate is arranged right in front of the cutting machine body, and a round opening as high as the positioning cylinder is formed in the end face of the abutting plate in a penetrating mode. A rotating plate is arranged on the front end face of the abutting plate located below the round opening, a sleeve consistent with the round opening in front-back position is fixed to the peripheral side of the rotating plate, and an inserting column inserted into the round opening in a sliding mode is arranged in the sleeve. The round opening is equal to the positioning barrel in height, so that bars can be stably located below the cutting machine body, stable cutting is facilitated, and meanwhile, due to the fact that the push plate can slide in the positioning barrel, bars of different lengths can be cut.

The invention discloses a low-carbon high-nitrogen sewage treatment method, and belongs to the technical field of sewage treatment.According to the method, sewage is placed in a plurality of special treatment ponds, and dissolved oxygen and filler filling rates of the treatment ponds are specifically controlled, so that no additional carbon source needs to be introduced in the whole sewage treatment process, and nitrogen degradation is achieved through the carbon source in the sewage; and the sludge backflow process necessary for the traditional process is omitted, the water quality of the treated water body reaches the standard, and the stability of the treatment effect can be realized when the C / N ratio of the sewage is within the range of 0.5-5.

The utility model provides a kind of feeding system of sewing machine, belong to sewing machine technical field.It solves the technical problems such as the additional driving source required by existing cloth feeding mechanism, complex structure, poor synchronism of cloth feeding and needle action.The feeding system of this sewing machine includes driving shaft, needle feeding assembly and cloth feeding assembly, driving shaft is rotatably installed on head, driving member for driving driving shaft reciprocating rotation is arranged in head, needle feeding assembly and cloth feeding assembly are connected with driving shaft, when needle of needle feeding assembly is under cloth, cloth feeding assembly stops cloth feeding, after needle of needle feeding assembly moves up and separates from cloth, cloth feeding assembly starts cloth feeding, cloth feeding assembly is connected with driving shaft by transmission assembly.The utility model drives needle feeding assembly and cloth feeding assembly simultaneously by setting single driving shaft, realizes the accurate synchronization of needle action and cloth feeding action.

This invention provides a control method and apparatus for constant arc length welding of 1.6mm diameter aluminum alloy welding wire, relating to the field of aluminum alloy welding technology. The control method for constant arc length welding of 1.6mm diameter aluminum alloy welding wire is applied to a consumable electrode welding method, comprising multiple consecutive welding cycles. Each welding cycle includes a pulse welding period and an arc circuit detection period following the pulse welding period. The arc circuit detection period includes a wire forward feed period, a first arc detection period, a second arc detection period, and a wire retraction period. Through the synergistic effect of multi-stage speed control and current regulation, the pulse arc length is precisely maintained during the wire retraction period, achieving controllability of the droplet transfer process and arc length stability. This effectively solves the problems of arc drift, wire sticking, and poor weld bead formation in existing technologies, enabling precise control of the arc length and reducing wire sticking, thereby improving welding stability.

This invention discloses a page processing method, apparatus, electronic device, storage medium, and product. The method includes: responding to a page interaction operation performed on a browser page; identifying at least one page interaction operation event triggered on the browser page through a pre-configured browser plugin and determining the voice content associated with the at least one page interaction operation event, wherein the voice content associated with the page interaction operation event is voice material related to the page interaction operation formed by synchronously providing voice explanation of the page interaction operation performed on the browser page; determining the DOM element positioning information corresponding to the at least one page interaction operation event; generating a target document based on the voice content associated with the page interaction operation event; and generating a target script based on the DOM element positioning information corresponding to the at least one page interaction operation event and the triggering order of the at least one page interaction operation event. This application solves the problem of low efficiency due to repetitive configuration during browser page configuration.

The invention relates to a preparation method of peppermint essence, which solves the problems of quick volatilization and poor durability of the traditional peppermint essence by optimizing the combination of essence components and a slow-release carrier by adopting a multi-layer microcapsule slow-release technology and a nanocapsule technology. According to the method, essence components such as menthol, menthone and leaf isovalerate are mixed with at least two layers of microcapsules, the outer layer microcapsules slowly release fragrance, the inner layer microcapsules quickly release fragrance, and it is ensured that the fragrance is kept for a long time in the using process. Meanwhile, the essence is uniformly dispersed in different carrier systems through ultrasonic-assisted emulsification by adopting a nanocapsule technology, so that the stability and dispersity of the essence are improved. In addition, the temperature-responsive and pH-responsive polymer materials are introduced, so that the release rate of the essence can be adjusted according to the external environment, and the adaptability of the essence is further enhanced.

The application discloses a method for preparing non-spherical nano-silica particles by self-assembly induction, which comprises synthesis of silica particle seeds and further growth of the seeds: by preparing monodispersed seed particles, trace amounts of amphoteric electrolytes are added into the seed growth solution to induce anisotropic growth of the seeds, the types and proportions of the electrolytes are adjusted to make the monodispersed seeds generate silica sol of non-spherical silica particles with different morphologies, and then a series of post-treatments such as water replacement solvent, filtration and concentration are conducted to obtain non-spherical ultra-high-purity silica sol with a mass fraction of more than 18%, a primary particle size of 40-80 nm and a morphology of peanut-shaped, short-chain-shaped and long-chain-shaped, etc. The application also relates to the non-spherical ultra-high-purity silica sol and application thereof in CMP. The preparation method of the application adopts a self-assembly mode of monodispersed seeds to prepare non-spherical particles, and the particle morphology can be further adjusted by adjusting the dosage or types of the self-assembly induction agent.

The invention relates to the technical field of water treatment, in particular to a catholyte-through multi-electrode-group parallel electrochemical reactor which comprises a reaction tank and a plurality of groups of electrode assemblies arranged in the reaction tank, the electrode assembly includes an anode; the cathode is annularly arranged outside the anode; the separation net is arranged between the anode and the cathode and is configured to isolate the catholyte from the anolyte; the base and the cover are provided with grooves for mounting the anode, the separation net and the cathode and are respectively mounted at the bottoms and the tops of the anode, the separation net and the cathode; the positive terminal is inserted into the cover and is connected with the anode; the negative terminal is inserted into the cover and is connected with the cathode; the acid extraction opening is formed in the center of the cover and penetrates through the cover to extend into the anode area of the anode; and the external pump is connected with the acid pumping port through a pipeline. The problem of insufficient utilization of hydroxyl in the existing water softening technology is solved, the number of the electrode groups can be flexibly adjusted according to actual requirements, the industrial-scale water treatment requirements are met, and meanwhile, the operation cost is effectively reduced.

The utility model relates to the technical field of erosion gully treatment, and discloses a soft protection grid device for erosion gully treatment, which comprises a gully bottom, slope bodies are fixedly connected to the left side and the right side of the top wall of the gully bottom, protection mechanisms are mounted on the inner sides of the slope bodies, and the protection mechanisms are used for treating erosion gully. And a fixing mechanism is mounted on the outer side of the protection mechanism. According to the utility model, the protection grid is composed of a plurality of grids with small meshes, the planting soil is filled in the protection grid, the protection net prevents the planting soil from scattering out, the protection grid is spliced on the inner side of the outer frame according to the length of a ditch slope and is obliquely arranged and fixed on the ditch slope during use, and vegetation is planted in the protection grid; the root systems of the vegetation penetrate through the protection grids and root in the soil body of the ditch slope, the ditch slope is stabilized and prevented from being eroded, the effect of purifying water is achieved, when flood impact occurs, the vegetation has the energy reduction effect, and the impact of water flow on the soil body is effectively relieved.

The application relates to a gas control vacuum proportional valve, belonging to the field of gas pump pressure regulation, and mainly applied to vacuum pumping after electrolyte is filled into a battery pack of a lithium battery. The gas control vacuum proportional valve comprises a valve head, a valve body and a valve core. The valve head and the valve body enclose a positive pressure cavity connected with a positive pressure gas source. The valve core is provided with an output air channel connected with a vacuum pump and an input air channel connected with a lithium battery device to be vacuumized. The input air channel and the output air channel are selectively connected into a vacuum flow channel through an air port. The valve core is further provided with a containing cavity and a gas control pressure regulating assembly arranged in the containing cavity. The gas control pressure regulating assembly comprises a rubber-coated valve port diaphragm separating the vacuum flow channel and the containing cavity. The valve core is provided with a gas stopping baffle. The gas pressure in the positive pressure cavity can drive the rubber-coated valve port diaphragm and cooperate with the gas stopping baffle to form the air port. The containing cavity is always in a sealed state, so that the problem that corrosive electrolyte is inhaled into the containing cavity along with the gas when the gas control vacuum proportional valve is used to pump vacuum after electrolyte is filled into the battery pack is solved.

The embodiment of the invention provides a memory device and a control method thereof, relates to the technical field of semiconductors, and can reduce the data transmission reading time, reduce the energy consumption in the data reading process and improve the performance of the memory device. The memory device includes a plurality of memory cells arranged in an array and a peripheral circuit coupled to the plurality of memory cells; the peripheral circuit includes a global data line and a complementary global data line, a global amplification circuit, and a local amplification circuit. The control method of the memory device comprises the following steps: in response to a first global control signal being in a cut-off state and a first local control signal being in a cut-off state, a global amplification circuit keeps target signals of target memory cells on a global data line and a complementary global data line for a preset duration, and when the difference value between the voltage on the global data line and the voltage on the complementary global data line meets a preset value, the first global control signal is in an enabled state, and a target signal is output.

The application provides a cleaning device for hydrogen storage tank body processing, which comprises: moving pieces, two moving pieces are movably connected with a transmission shaft coaxially connected with an output shaft of a first driving motor, and the moving pieces are movably connected with the transmission shaft through torque springs arranged on the transmission shaft, the two moving pieces have a first state of approaching each other along a horizontal direction and a second state of moving away from each other along the horizontal direction through the extension and contraction of the torque springs; and an abutting piece, the abutting piece is hinged with a connecting piece arranged on the transmission shaft through a torque spring, and the abutting piece has an initial state of rotating around the connecting piece without contacting the tank body and an abutting state of rotating around the connecting piece and contacting the tank body through the extension and contraction of the torque spring. The stability of the cleaning device when cleaning the inside of the tank body is improved.

The utility model provides a kind of formwork for station internal stand column diameter expansion construction, including steel hoop assembly and wooden formwork assembly;The wooden formwork assembly includes two semicircular templates, and two semicircular templates are formed into a whole circle by surrounding and splicing;The template includes melamine board layer, plywood layer, support batten layer and assembled batten layer from inside to outside in turn;The melamine board layer and plywood layer are fixed by adhesive method, for making the template inner surface even;The support batten layer is arranged around the outer periphery of the plywood layer by adhesive method, for whole circle support;The assembled batten layer is wrapped outside support batten layer for constraining the overall shape of the template;The steel hoop assembly includes a pair of semicircular steel hoops arranged in pairs, a pair of semicircular steel hoops are used for locking outside wooden formwork assembly, and each steel hoop assembly is arranged equidistantly along the length direction of wooden formwork assembly.The template has the advantages of improving construction efficiency and ensuring the appearance quality after stand column diameter expansion.