30results about How to "Reduce adjustment error" patented technology

The invention discloses an intelligent adjusting system of an adaptive multi-environment ship electric control valve actuator, which relates to the technical field of control valve adjustment and comprises an environment judgment module, a real-time monitoring module, an adaptive adjusting module and a feedback optimization module. The environment judgment module collects environment data through various sensors distributed on an electric control valve and around the electric control valve, and the environment data are processed through a signal conditioning and microprocessor application algorithm. According to the intelligent adjusting system of the self-adaptive multi-environment ship electric control valve actuator, the adaptability and the stability of the ship electric control valve actuator in variable environments are remarkably improved; the electric control valve actuator can monitor and respond to environment changes such as temperature, humidity, vibration and electromagnetic interference in real time, it is ensured that the electric control valve actuator can be accurately regulated and controlled under the extreme working condition, and therefore the reliability and safety of a ship system are improved.

The invention relates to the technical field of temperature regulation and control, in particular to an intelligent temperature regulation and control method and system based on an intelligent building. The method comprises the following steps: performing functional area air flow simulation on intelligent building structure design data to obtain functional area air conditioning flow simulation data; performing air circulation regulation of different functional areas on the functional area air regulation flow simulation data to obtain temperature coupling air circulation regulation data; indoor temperature circulation adjustment compensation is conducted on the temperature coupling air circulation adjustment data according to the human flow real-time monitoring data, and indoor temperature circulation adjustment compensation data are obtained; performing regulation and control logic training optimization on the indoor temperature circulation regulation and compensation data to obtain temperature regulation and control logic optimization data; and performing automatic firmware design based on the temperature regulation and control logic optimization data to obtain temperature regulation and control logic firmware. According to the invention, the temperature regulation and control technology is optimized, so that the temperature regulation and control technology is more perfect.

The invention discloses a harmonic suppression and dynamic reactive compensation control method for an energy router, which is suitable for a micro-grid and a distributed energy access system. According to the method, three-phase current and voltage signals of an alternating current port of the energy router are collected, five-time and seven-time main harmonic components are extracted through fast Fourier transform, harmonic compensation current instructions equal in amplitude and opposite in phase are generated and injected into an inverter to be output, and active counteracting of main harmonics is achieved. Meanwhile, the bus voltage deviation and the change rate thereof are detected, a reactive current instruction is adjusted on line by adopting a fuzzy self-adaptive PI controller, rapid and smooth dynamic reactive compensation is realized, and the bus voltage is stabilized. Decoupling control of active / reactive and harmonic components is realized in combination with Park conversion, and virtual impedance is introduced to enhance system damping and harmonic suppression capabilities. Compared with the prior art, harmonic suppression and voltage support can be simultaneously realized under a single control framework, the response speed is high, the stability is high, and the method is suitable for high-performance grid-connected operation of the multi-port energy router.

The utility model belongs to the technical field of anti - flash rust inhibitor production equipment, concretely relates to a kind of low molybdenum type anti - flash rust inhibitor production device of ph value regulation and control, including reaction kettle, reaction kettle is connected by positive pressure feeding line communication acid storage high tank, alkali storage high tank, and positive pressure feeding line includes two discharge pipes, the tank bottom of two discharge pipes is communicated respectively the acid storage high tank, alkali storage high tank, discharge pipe is connected with feed pipe, feed pipe is connected with venturi pipe throat part, and venturi pipe is installed on nitrogen tube, and nitrogen tube is connected with spray pipe, and one end of spray pipe inserted into reaction kettle interior is equipped with atomizing nozzle, and regulating valve and float flowmeter are installed on feed pipe. By observing float flowmeter and adjusting regulating valve, acid liquor or alkali liquor is added into reaction kettle at uniform speed, controllable, and production efficiency and production quality are considered;Gas-liquid mixture is sprayed at high speed by atomizing nozzle, so that acid liquor or alkali liquor is fully and uniformly contacted with reaction liquid, and side reaction caused by local over-acid or over-alkali of reaction liquid is avoided.

An adaptive control method for cyber-physical systems (CPS) subjected to injection and deception attacks includes the following steps: S1: Constructing a control system model under a cyber-physical framework; S2: Defining actuator attacks when the system's sensors and actuators are subjected to adversary injection and deception attacks; S3: Defining sensor attacks when the system is subjected to sensor attacks; S4: Rewriting the system model under cyberattacks; S5: Based on the rewritten system model, obtaining the adaptive control law u using the BackStepping method; S6: Further deriving that all signals in the closed-loop system are globally bounded based on the adaptive control law u in S5, and designing a controller by introducing Nussbaum even functions and their variable derivatives. When the system is subjected to injection and deception attacks, the control parameters are adjusted to make the adjustment error arbitrarily small. This invention can ensure that the adjustment error can be arbitrarily small under injection and deception attacks by adjusting the control parameters.

The invention relates to an optical system installation and adjustment technology, and provides an installation and adjustment method of a multi-path imaging system in order to solve the problems that an existing installation and adjustment method is large in error, low in precision, inconsistent in resolution ratio and the like, and the installation and adjustment method comprises the steps that the multi-path imaging system is preliminarily built according to theoretical parameters of system design; the attitude of a transmitting end primary mirror is determined through a first theodolite, a small-caliber plane mirror and a large-caliber plane mirror, and the spatial position of a transmitting end secondary mirror is adjusted through a second theodolite and a cross wire reticle, so that an image of the cross wire reticle sequentially passes through the transmitting end primary mirror and the transmitting end secondary mirror and then coincides with the center of the second theodolite; determining the spatial positions of the slit and the light source, and completing the light path adjustment of the transmitting end; a receiving end light path is adjusted according to the transmitting end light path adjusting step, then a resolution plate is installed between the transmitting end light path and the receiving end light path, the spatial position of an imaging lens is adjusted, a plurality of imaging cameras all capture the clearest image of the resolution plate, and installation and adjustment of the multi-path imaging system are completed.

The invention discloses a real-time communication new energy aircraft variable pitch propeller, and belongs to the technical field of aviation, the real-time communication new energy aircraft variable pitch propeller comprises a mounting frame, a plurality of adjusting shafts are arranged on the side wall of the mounting frame, blades are arranged at the ends, away from the mounting frame, of the adjusting shafts, an electric slip ring is arranged at the bottom of the mounting frame, and sliding pins are arranged on the sides, close to the mounting frame, of the adjusting shafts; an incomplete gear is arranged on the outer side wall of the adjusting shaft, an angle sensor is arranged in the installation frame, and a detection shaft of the angle sensor is provided with a transmission gear meshed with the incomplete gear. According to the device, the threaded column is automatically locked after adjustment, rotation caused by potential difference after the motor stops adjustment and is powered off is reduced, the adjustment error is reduced, the accuracy and accuracy of paddle adjustment are improved, the threaded column can be locked in all directions after adjustment is completed, the position of the adjustment block and the angle of the paddle are continuously limited, and the adjustment efficiency is improved. And the stability of the paddle during normal working is improved.

The invention discloses an active and passive compliance force control device for an abrasive belt grinding and polishing machine and a control method, and relates to the technical field of grinding and polishing machinery, the active and passive compliance force control device comprises a contact wheel substrate, an abrasive belt machine substrate, a linear compliance regulator, a guide rail mechanism, a distance detection mechanism and a controller; one side of the contact wheel base plate is provided with a rotary and movable grinding and polishing contact wheel, and a grinding and polishing abrasive belt is wound outside the grinding and polishing contact wheel; the belt sander base plate is fixedly connected to a machine body of the abrasive belt grinding and polishing machine, and the contact wheel base plate is in sliding connection with the belt sander base plate through a guide rail mechanism. One end of the linear compliance regulator is fixedly connected to the contact wheel base plate, and the other end of the linear compliance regulator is fixedly connected to the belt sander base plate. The controller drives the linear compliance regulator to drive the contact wheel base plate to move front and back so as to regulate output of grinding and polishing force. According to the method, an active and passive compliant force control combined method is adopted, constant and accurate contact force is provided for the abrasive belt grinding and polishing process, and the grinding and polishing precision and the surface quality of parts with complex curved surfaces, thin walls and the like are effectively improved.

The invention discloses an imaging device with an adjustable imaging angle, which comprises a shell, a movable seat, an imaging module and a driving mechanism, and is characterized in that the movable seat is mounted on the shell in a manner of being capable of overturning around a transverse axis; the imaging module is mounted on the movable seat in a turnover manner around the longitudinal axis; the driving mechanism comprises an operation part, a first turnover assembly and a second turnover assembly, the first turnover assembly is connected with the movable seat, the second turnover assembly is connected with the imaging module, and at least part of the operation part is exposed out of the shell and located on the side wall of the shell; when the operation part is triggered, the first turnover assembly is driven to drive the movable seat to turn over, and / or the second turnover assembly is driven to drive the imaging module to turn over. The rear end of the shell is mounted on a carrier such as a wall, and the operation part is exposed on the side wall of the shell, so that the triggering action of a user on the operation part and the mounting of the shell do not interfere with each other, and the imaging angle of the imaging module can be adjusted without dismounting the shell.

The utility model provides an adjustable air window for a coal mine, which belongs to the technical field of mine ventilation and comprises a frame body and a plurality of louvre blades, the louvre blades are respectively and uniformly arranged in a hollow cavity of the frame body through a rotating shaft, one end of the rotating shaft is provided with an adjusting gear, and the adjusting gear is meshed with an adjusting rack. The adjusting rack is connected with a sliding mechanism, a servo motor is arranged on one side of the frame body, the output end of the servo motor is connected with a transmission mechanism, and the transmission mechanism is connected with a rotating shaft. The transmission mechanism comprises a plum coupling, a corner device, a pin coupling and a speed reducer, the output end of the servo motor is connected with the speed reducer, the speed reducer is connected with the corner device through the pin coupling, and the corner device is connected with one end of the rotating shaft through the plum coupling. Through the design of the transmission mechanism and the sliding mechanism, the transmission efficiency can be effectively improved, accurate adjustment of the ventilation quantity is achieved, and safety, reliability, high efficiency and energy conservation are achieved.

The utility model discloses a quick positioning tool for a glass belt conveying roller way, and relates to the technical field of glass cold end conveying equipment, the quick positioning tool comprises a tool clamping plate, a scale is fixedly mounted on one side of the tool clamping plate, a sliding groove is formed in the side, provided with the scale, of the tool clamping plate, a sliding block is connected in the sliding groove in a sliding mode, and the tool clamping plate is provided with a sliding groove. A positioning block is fixedly connected to the sliding block, the positioning block is vertically arranged, one end of the positioning block is fixedly connected with a pointer, a fastening nut is fixedly installed on the positioning block in a penetrating mode, a fastening bolt is in threaded connection with the fastening nut, and a supporting plate is fixedly installed below the tool clamping plate. The device is fixedly installed on a glass steering device, the positioning block slides to drive the pointer to the needed position, then the positioning block is limited, the belt assembly slides to the conveying roller to be attached to the positioning block, then the belt assembly is limited, and the problems that according to an existing assembling and positioning technology, glass conveying deviation is likely to be caused, and the reworking period is long are solved.

The utility model discloses and provides an adjustable geotechnical engineering investigation auxiliary working platform which comprises a base, a lead screw is movably installed in a circular through groove, one end of the lead screw is connected with a motor, a sliding seat is movably installed on the outer surface of the lead screw, and a connecting plate is connected to the outer surface of the sliding seat. The connecting plate is movably clamped in the inner wall of the limiting groove, one end of the connecting plate is connected with a sliding plate, the sliding plate is movably installed in the inner wall of the sliding groove, the top end of the sliding plate is connected with a supporting platform, and an installation groove is formed in the outer surface of the supporting platform. The sliding seat and the connecting plate are controlled to move up and down, and the height of the supporting platform is adjusted. By means of the mechanical transmission mode, accurate adjustment of the height is guaranteed, operation is easy and convenient, and adjustment errors caused by human factors are greatly reduced.

The present invention discloses a variable pitch propeller for a new energy aircraft with real-time communication, which belongs to the field of aviation technology and includes a mounting frame, a plurality of adjustment shafts are arranged on the side wall of the mounting frame, a blade is arranged at one end of the adjustment shaft away from the mounting frame, an electric slip ring is arranged at the bottom of the mounting frame, a sliding pin is arranged on the side of the adjustment shaft close to the mounting frame, an incomplete gear is arranged on the outer wall of the adjustment shaft, an angle sensor is arranged inside the mounting frame, and a transmission gear meshed with the incomplete gear is installed on the detection shaft of the angle sensor. The present invention automatically locks the threaded column after adjustment, reduces the rotation of the motor caused by the potential difference after the motor stops adjusting and the power is turned off, reduces the adjustment error, improves the precision and accuracy of the blade adjustment, and can lock the threaded column in all directions after the adjustment is completed, continuously limits the position of the adjustment block and the angle of the blade, and improves the stability of the blade when it is working normally.

The invention discloses a chip mounting position adjusting mechanism which structurally comprises a workbench, a portal frame arranged on the workbench, a first positioning strip and a second positioning strip, a fixing frame sliding in the X-axis direction is arranged on the portal frame, a chip mounting station is arranged on the workbench, the first positioning strip is fixed to the chip mounting station in the X-axis direction, and the second positioning strip is fixed to the chip mounting station in the X-axis direction. The PCB is fixed by taking the first positioning strip as a reference line, the second positioning strip and the first positioning strip are aligned and fixed on the workbench, the first positioning strip is provided with a plurality of positioning points aligned with mounting positions on the PCB, the second positioning strip is provided with a plurality of positioning grooves, and the plurality of positioning grooves are respectively aligned with the positioning points. According to the invention, the adjustment error of the chip in the X-axis direction is reduced, and the adjustment precision of the probe on the position of the chip is improved.

The utility model belongs to the technical field of auxiliary devices of papermaking equipment, and relates to a paper tube raw paper banner moisture adjusting test device which comprises a pressurizing roller, a sliding device, a lifting adjusting device and a supporting device, the pressurizing roller is hung on the sliding device through the correspondingly arranged lifting adjusting device, and the sliding device is fixedly installed on one side of the supporting device. The pressurizing roller abuts against the vacuum couch roll, and a wet paper web penetrates through the space between the pressurizing roller and the vacuum couch roll. Through cooperative work of the lifting adjusting device and the sliding device, the pressurizing roller is adjusted to pressurize at the vacuum couch roll, so that accurate adjustment of paper web moisture is achieved, the requirements of different production processes for the paper web moisture are met, the paper web moisture is adjusted, and performance indexes such as uniformity, smoothness and strength of paper are improved; therefore, the overall quality of finished paper is improved, the paper quality problem and the rejection rate caused by too high or too low moisture are reduced, and the production cost is reduced.

The utility model relates to the technical field of medical care auxiliary instruments, and discloses a ventricular drainage bag fixing device which comprises a supporting tube and a fixing clamp arranged at the lower end of the supporting tube, a lifting rod is sleeved with the supporting tube, and a lifting mechanism matched with the lifting rod is arranged on the rear side wall of the supporting tube. A reminding plate sliding up and down along the front side wall of the supporting pipe is arranged on the front side wall of the supporting pipe, and a telescopic supporting cross rod is arranged at the upper end of the lifting rod. The operation is simple, convenient and rapid, the relative height adjusting error of the drainage bag is small, the supporting tube can be more stably fixed to a sickbed through the fixing frame, the lifting rod can be adjusted to move up and down in real time through the lifting mechanism, and therefore the relative height of the drainage bag is adjusted through the supporting transverse rod; the reminding plate can remind the relative height of the drainage bag to the head of the patient more conveniently, the length of the telescopic supporting cross rod can be adjusted along with lifting of the bed head of the patient, and the situation that the drainage tube is tightened and potential safety hazards are brought to the patient is avoided.

A frame beam steel reinforcement framework levelness adjusting device comprises a supporting stand column, a transverse supporting rod and a traction device, the supporting stand column is vertically arranged on the inclined side of the steel reinforcement framework, the lower end of the supporting stand column penetrates through a formwork to be fixedly connected with a formwork support, and the transverse supporting rod is transversely inserted between a steel reinforcement and a stirrup at the upper end of the steel reinforcement framework. The two ends of the transverse supporting rod are supported on the surfaces of the formworks on the two sides, the middle of the transverse supporting rod supports a steel bar at the upper end, the upper end of the traction device is fixedly connected with the upper end of the supporting stand column, the lower end of the traction device is connected to the transverse supporting rod corresponding to the inclined side of the steel bar framework in a hung mode, and the traction device is a chain hoist. The lower hook penetrates through the steel bar to hook the transverse supporting rod. According to the device, the transverse supporting rod at the inclined position of the reinforcement cage is pulled through the hand-drive block, the inclined position of the reinforcement cage is lifted through the horizontal supporting force of the transverse supporting rod, the whole reinforcement cage is in the horizontal state, the reinforcement cage leveling operation can be easily and efficiently completed through the device, the adjusting error is small, and the effect is good.

The invention relates to a sampling mode adjusting method and device, computer equipment, a medium and a product. The method comprises the steps of obtaining an optical signal corresponding to an original signal generated in an external environment under the condition of a current signal sampling mode, determining an adjustment state of the current signal sampling mode according to a phase signal of the optical signal, and adjusting the current signal sampling mode into a target signal sampling mode under the condition that the adjustment state is yes, the target signal sampling mode serves as a current signal sampling mode, the step of obtaining the optical signal corresponding to the original signal generated in the external environment continues to be executed, and the signal sampling rate of the target signal sampling mode is different from that of the current signal sampling mode. When the method is used for positioning and identifying the disturbance signal, the signal sampling mode can be continuously adjusted, and the storage redundancy of the effective signal can be reduced on the premise of ensuring that the effective signal required by positioning and identification is not influenced.

The invention discloses an adjustable tire fender which comprises a fender adjusting winding piece, the fender adjusting winding piece comprises a binding tape winding piece and a binding tape locking piece, the binding tape winding piece circumferentially rotates on an outer plate of a ship, and the binding tape locking piece circumferentially locks the binding tape winding piece on the outer plate; the fender adjusting transmission part comprises a tire fender part, the tire fender part is connected with the binding belt winding part in a winding mode, and the suspension height of a tire is adjusted through the binding belt winding part; the fender adjusting power part comprises a motor and fender adjusting transmission parts, the motor is arranged on the outer plate and provides power with the connected fender adjusting transmission parts, and the multiple sets of fender adjusting transmission parts correspond to the multiple sets of fender adjusting winding parts one by one so as to control the tire suspension heights of the multiple sets of fender adjusting transmission parts at the same time. The device is high in automation degree and high in tire fender adjusting efficiency, the height adjusting error of the multiple tire fenders is small, and the anti-impact effect of ships and wharfs is remarkable.

The utility model relates to a printing ink scraper structure for a screen printing machine, and aims to solve the technical problems that the precision of current manual adjustment is not high, a group of adjusting rods are difficult to accurately rotate and adjust to the same horizontal line through manual operation because the adjusting rods are in threaded connection with a sleeve, the scraper is easy to slightly incline, and the printing quality is influenced. Comprising a screen printing machine rack, a sliding frame is clamped in the screen printing machine rack, a first air cylinder is connected to the top of the sliding frame, a support is connected to the movable end of the first air cylinder, an ink covering blade mechanism is arranged behind the inner side of the support, a scraper mechanism is arranged in front of the ink covering blade mechanism, and a convenient mechanism is arranged on the surface of the scraper mechanism. The driving wheel is effectively driven by the motor to rotate, so that the driven wheel is driven to rotate, the shaft rod, the limiting groove frame and the scraper body are further driven to perform angle deviation, the scraper body can be adjusted more finely in height, manual operation is not needed, and adjusting errors are reduced.

The utility model provides a kind of double-arm puncture positioning mechanism and puncture robot, wherein double-arm puncture positioning mechanism includes: two parallel interval settings linear motion unit, two movement swing arms, probe angle adjusting unit, probe, puncture angle adjusting unit and puncture execution unit;Wherein, linear motion unit is used to adjust the position of movement swing arm in first direction;One movement swing arm is used to adjust the position of probe angle adjusting unit in second direction and third direction;Another movement swing arm is used to adjust the position of puncture angle adjusting unit in second direction and third direction;Probe angle adjusting unit is connected with probe and is used to adjust the deflection angle of probe;Puncture angle adjusting unit is used to adjust the pitch angle and deflection angle of puncture execution unit.By adopting the above technical scheme, the adjustment accuracy and flexibility of the puncture robot are improved.

The invention relates to the technical field of bending equipment, and particularly discloses bending equipment for constructional engineering, which comprises an operation table, symmetrical vertical plates are slidably arranged on the side edge of the operation table, a movable block is fixedly mounted between the vertical plates, a sleeve rod is rotatably arranged in the middle of the movable block, and a vertical rod is fixedly mounted on the outer wall of the sleeve rod. Symmetrical clamping plates are arranged in the sleeve rod, symmetrical sliding grooves are formed in the positions, located on the side edges of the clamping plates, of the inner wall of the sleeve rod, sliding plates are arranged on the sliding grooves in a sliding mode, pressing springs are fixedly installed in the sliding grooves, the pressing springs are pressed between the sleeve rod and the sliding plates, and hinge columns are arranged between the sliding plates and the clamping plates. According to the bending equipment for constructional engineering, the bending face of the reinforcing steel bar can be conveniently adjusted when the reinforcing steel bar is bent multiple times, the reinforcing steel bar does not need to be manually held by hand to be frequently rotated and adjusted, the adjusting error is reduced, meanwhile, the stability is high in the reinforcing steel bar bending process, and the bending quality can be improved while the reinforcing steel bar bending efficiency is improved.

The utility model relates to the field of sheet stock driving rollers, and relates to a sheet stock driving roller capable of being adjusted accurately, the sheet stock driving roller comprises a left side plate and a right side plate, a center shaft rod is fixedly installed in the centers of the left side plate and the right side plate in a penetrating mode, the left side plate and the right side plate are each provided with a plurality of adjusting grooves, and a driving rod is slidably connected between the adjusting grooves in the left side plate and the right side plate; a plurality of positioning grooves are formed in the inner wall of each adjusting groove, a clamping block is connected to the driving rod in a sliding mode, and an elastic piece is arranged on the driving rod. After the positions of the driving rods are adjusted, the arrangement positions of the positioning grooves where the clamping blocks on the driving rods are clamped are consistent, the distances between the adjusted positions of the driving rods and the center shaft rod can be the same, then the distances between the adjusted driving rods are consistent, the adjusting error is reduced, and the working efficiency is improved. The position of the driving rod is adjusted more accurately, and the influence on the product machining efficiency is reduced.

The application discloses a kind of virtual power plant distributed resource group control group regulation systems of virtual power plant technical field, comprising: virtual power plant regulation platform, deployment is in power company dispatching center, for according to the operation of power grid, issue plan adjustment demand and real-time adjustment command;Aggregator, for the total adjustable capacity and real-time total power of distributed resource reported by distributed resource group control group regulation terminal according to the overall adjustment of distributed resource, and according to the integrated distributed resource, plan adjustment demand and real-time adjustment command are decomposed, obtain the resource regulation requirement of each described distributed resource group control group regulation terminal, and issue to corresponding distributed resource group control group regulation terminal;Distributed resource group control group regulation terminal, for real-time calculation the total adjustable capacity and real-time total power of distributed resource in current jurisdiction range and report it to aggregator, and according to resource regulation requirement, select suitable distributed resource to carry out regulation.

The invention relates to the technical field of blade array grinding and polishing, in particular to a rapid alignment device and method for a blade array grinding and polishing clamp. The rapid alignment device comprises a square frame body, the upper half part of the square frame body is an upper-layer frame body, and the lower half part of the square frame body is a lower-layer frame body; a plurality of adjusting screws are respectively screwed on each side wall of the upper-layer frame body and the lower-layer frame body; the upper-layer frame body is used for accommodating a flange plate of the clamping seat, and the inner side end of an adjusting screw on the upper-layer frame body can abut against the side face of the flange plate; the lower-layer frame body is used for accommodating the adapter plate on the 3R positioning block, and the inner side end of the adjusting screw on the lower-layer frame body can abut against the side face of the adapter plate. During alignment, the positions of the flange plate relative to the adapter plate in the X-axis direction and the Y-axis direction are adjusted by coordinating the adjusting screws on the upper-layer frame body and the lower-layer frame body; and the rotating angle direction of the flange plate relative to the Z axis is adjusted by coordinating the adjusting screws on the upper-layer frame body and the lower-layer frame body.

This utility model discloses a vernier caliper for measuring the wall thickness of copper pipes in copper-aluminum composite radiators, relating to the field of vernier caliper technology. It aims to solve the problem that existing vernier calipers cannot adapt to confined spaces and can accommodate various copper pipe wall thickness measurements. The technical solution includes a scale body and a vernier. A notch is provided at the end of the scale body near the fixed measuring head to accommodate copper pipe wall thickness measurements in confined spaces. By creating the notch at the end of the scale body near the fixed measuring head, the aluminum fins or other interference structures around the copper-aluminum composite radiator can be effectively avoided, allowing the fixed and sliding measuring heads to penetrate into confined spaces and precisely conform to the inner and outer walls of the copper pipe, successfully completing the wall thickness measurement. This solves the problem of traditional vernier calipers being unable to measure due to spatial interference. Fixed claws are provided on the opposing surfaces of the fixed and sliding measuring heads, and a sliding claw is slidably connected to the sliding measuring head. A locking component is also provided on the sliding measuring head to limit the movement of the sliding claw.

The present invention provides a position adjustment device, method and belt conveyor of a gravity tensioning device, wherein the position adjustment device of the gravity tensioning device comprises: a position detection device, an adjustment device and an electric winch, wherein the detection device is connected to one end of the adjustment device, the detection device detects the position signal of the weight in the belt conveyor gravity tensioning device, and sends the position signal to the adjustment device; the other end of the adjustment device is connected to one end of the electric winch, the adjustment device receives the position signal, and sends a rotation instruction to the electric winch according to the position signal; the electric winch is connected to the weight, the electric winch receives the rotation instruction, and adjusts the position of the weight according to the rotation instruction. By implementing the present invention, the automatic adjustment of the position of the gravity tensioning device is realized, human resources are saved, and omissions in manual operation are avoided, the adjustment error is small, and the occurrence of accidents of the weight hitting the top or falling can be effectively avoided.

The invention discloses a control method and a control device of a resonant converter, a medium, a processor and a switching power supply, the resonant converter comprises a primary side bridge circuit, a resonant cavity, a transformer and a secondary side rectifying circuit, the resonant cavity comprises a resonant capacitor and a resonant inductor, the control method comprises the following steps: the resonant converter has a plurality of resonance stages in a working period, and when the working state of the resonant converter is switched between a first state and a second state, the time of one of the plurality of resonance stages is prolonged, therefore, the working state switching of the resonant converter is realized. The state switching performance of the resonant converter can be improved.

This utility model relates to the field of stripping mechanisms and discloses an automatic stripping mechanism for a core shooter. It includes an upper mold and a lower mold, both equipped with stripping components. When the upper and lower molds open, the stripping components separate the sand core, which is then transferred by a core-receiving component. The lower mold is connected to a horizontal adjustment mechanism, which guides the core-receiving component, ensuring synchronous movement between the mechanism and the component. This utility model proposes an automatic stripping mechanism for a core shooter. By synchronizing the core-receiving component with the horizontal adjustment mechanism, it eliminates the need for the telescopic lifting structure of traditional core-receiving devices, reducing failure rates, operational steps, and errors, and improving reliability. Horizontal movement for receiving the sand core avoids height limitations, eliminates the need to increase the mold opening distance, and improves efficiency. The extended guide rail design provides ample space for mold hoisting and replacement, shortening downtime and improving production continuity.