73results about How to "Accurate and stable adjustment" patented technology

The invention discloses a pilot proportional reversing valve, which comprises a main valve body and a pilot control valve arranged on the main valve body, wherein both ends of the main valve body are provided with a left end cover and a right end cover; and a main valve core and a main spring are arranged in the main valve body. The pilot proportional reversing valve is characterized in that: the pilot control valve comprises a pilot valve body and a left and a right proportion electro-magnets arranged at both ends of the pilot valve body; and a proportional reducing valve is arranged between the main valve body and the pilot valve body. The pilot proportional directional valve has the advantages of simplified structure, low cost, reduction of extravasation link, good spring guidance, high reliability and strong capability of resisting oil pollution.

The invention discloses a control method for ammonia spraying amount of a denitration device and a control device of the control method for the ammonia spraying amount of the denitration device. According to the control method, the difference value of the actual denitration efficiency value and a denitrification efficiency set value is compared with a first preset value to judge whether the ammonia spraying mass flow rate should be adjusted or not, if yes, the difference value of the actual denitration efficiency value and the denitrification efficiency set value is input to a PI controller to obtain a corrected value of the ammonia spraying mass flow rate, then the corrected value of the ammonia spraying mass flow rate is added to a reference value of the ammonia spraying mass flow rate to obtain a set value of the spraying ammonia mass flow rate, the difference value of the set value of the spraying ammonia mass flow rate and a measured value of the actual ammonia spraying mass flow rate is input to the PID controller to obtain a control instruction of an ammonia spraying control valve to control the ammonia spraying control valve so as to adjust the ammonia spraying mass flow rate. The control method for the ammonia spraying amount of the denitration device disclosed by the invention is simple, adjusted accurately, capable of ensuring the denitration efficiency to reach an expected value, and further can make the ammonia escape amount reduced below 3ppm.

The embodiment of the invention discloses an engine test stand device. The engine test stand device comprises a front stand base, a rear stand base, a first supporting column, a second supporting column, a front stand top board, a rear stand top board, a front-and-back automatic adjusting mechanism, a front end left-and-right automatic adjusting mechanism, a rear end left-and-right automatic adjusting mechanism, a front end up-and-down automatic adjusting mechanism, a rear end up-and-down automatic adjusting mechanism, a control cabinet and a detection sensor. The detection sensor is used for detecting the end surface flatness and radial coaxiality, relative to a dynamometer, of an engine flywheel, and transmitting the detection data to the control cabinet. The control cabinet analyzes and processes the detection data and then transmits corresponding adjusting commands to the front-and-back automatic adjusting mechanism, the front end left-and-right automatic adjusting mechanism, the rear end left-and-right automatic adjusting mechanism, the front end up-and-down automatic adjusting mechanism and the rear end up-and-down automatic adjusting mechanism.

The invention discloses a concrete trial-manufacturing and processing device, and belongs to the field of building material processing mechanical equipment. A main material feeding hopper and an ingredient feeding mechanism are arranged on the two sides of the upper portion of a concrete preparation kettle correspondingly, a concrete discharging control valve is fixedly arranged on a concrete discharging pipe in the middle of the lower side of the concrete preparation kettle, and a concrete discharging mechanism is arranged on the lower side of the concrete discharging pipe; and a preparation water inlet guide pipe is arranged on the concrete preparation kettle on the adjacent side of the main material feeding hopper, the output end of a concrete stirring motor is vertically and rotatably connected with a concrete stirring shaft, and a plurality of stirrers are horizontally and fixedly arranged on the concrete stirring shaft in sequence from top to bottom. According to the concrete trial-manufacturing and processing device, the structural design is reasonable, ingredients can be conveniently, accurately and quantitatively added according to the needs of concrete trial-manufacturing and processing, trial-manufacturing and processing of concrete of different specifications and batches are achieved, the processed concrete can be continuously and quantitatively transferred and discharged, the automation degree of concrete trial-manufacturing is improved, and the use needs are met.

The invention discloses a position adjusting system of a sealing and cutting machine. The separation stroke of an upper sealing and cutting piece and a lower sealing and cutting piece is adjusted andcontrolled through a programmable controller, a sensor and an encoder; the width position of a translation mechanism of a conveying table is adjusted and controlled through the programmable controllerand the encoder; a conveying mechanism is started or stopped in a delayed manner through the programmable controller and the sensor, so that the front and back allowances of products and films are adjusted and controlled; and the adjusting efficiency of the sealing and cutting machine is integrally improved, and the automation level and the production efficiency are improved.

The invention provides an intelligent integrated endoscope system. The system comprises an integrated endoscope device and a processing device. The integrated endoscope device comprises a plurality offunctional modules, a central control unit for controlling the operation of the plurality of functional modules and a power supply device for supplying power to the plurality of functional modules. Aplurality of functional modules include a pneumoperitoneum for inflating the cavity, a man-machine interactive screen, a cold light source and a camera. The pneumoperitoneum includes a proportional control valve, a switching solenoid valve, a bleed valve, an air flow sensor and a pressure sensor, and a power supply device includes a switching power supply and a plurality of electromagnetic interference suppression circuits. The processing device is used for positioning the moving object and processing the video to obtain the clear video. The invention can solve the problem of video image jitter caused by the instantaneous change of the air pressure caused by the instantaneous opening and closing of the on-off valve, avoid the electromagnetic interference signals transmitted between the functional modules, provide real-time clear endoscope video for the operation, and effectively improve the "noise" sensitive problem.

The invention provides an intelligent endoscopic system with a pneumoperitoneum control and central control module. The intelligent endoscopic system comprises an integrated endoscopic system and a processing system. The integrated endoscopic system comprises a plurality of functional modules, a central control unit which controls the operation of the plurality of functional modules and a power supply device which supplies power to the plurality of functional modules. A plurality of functional modules include a pneumoperitoneum for inflating the cavity, a man-machine interactive screen, a cold light source and a camera, the pneumoperitoneum includes a proportional control valve, a switching solenoid valve, a bleed valve, an air flow sensor and a pressure sensor, and a power supply deviceincludes a switching power supply and a plurality of electromagnetic interference suppression circuits.; The processing system is used for dynamic target location. The invention can solve the problemof video jitter caused by the instantaneous change of the air pressure caused by the instantaneous opening and closing of the on-off valve, avoids the electromagnetic interference signals transmittedbetween the functional modules, and effectively improves the "noise" sensitive problem.

The invention relates to a novel cable bridge which comprises straight grooves hinged to each other. The bottoms of the two straight grooves are connected and fixed through a connecting bottom plate, and the included angle between the two straight grooves is adjustable. A sliding block is arranged on the connecting bottom plate in a sliding manner, a boss is arranged on the straight groove, and a connecting rod is arranged between the sliding block and the boss. A vertically-through center guide groove is formed in the connecting bottom plate, a lead screw is rotatably arranged at the lower end of the connecting bottom plate, and the sliding block is slidably arranged in the center guide groove; the upper end of the sliding block is rotatably connected with the connecting rod, the lower end of the sliding block is in threaded connection with the lead screw, and an outer vertical plate is arranged between the side vertical surfaces of the two straight grooves. A vertically-through first sliding groove is formed in the straight groove, a vertically-through second sliding groove is formed in the connecting bottom plate, and a shaft pin is inserted in the crossed and overlapped position of the first sliding groove and the second sliding groove. The invention further discloses a cable corner adjusting method which can adjust the corner of the cable bridge and can meet the installation requirements under various use working conditions.

The invention discloses a comprehensive vehicle control system of a three-axle unmanned vehicle. The comprehensive vehicle control system comprises a suspension control system at least comprising a suspension lifting system and an axle distance adjusting system, a steering control system, a power supply system and a vehicle running power system, wherein the suspension lifting system is used for adjusting the height of a corresponding wheel of the three-axle unmanned vehicle to achieve lifting of a chassis of the three-axle unmanned vehicle, and the axle distance adjusting system is used for changing the horizontal position of a corresponding axle of the three-axle unmanned vehicle to achieve wheelbase adjustment of the three-axle unmanned vehicle; the steering control system is used for realizing high-speed front wheel steering or low-speed four-wheel steering of the three-shaft unmanned vehicle; the power supply system is connected with the suspension lifting system, the wheelbase adjusting system and the steering control system and provides power; and the vehicle running power system is used for providing hydraulic power drive or oil-electricity hybrid power drive for rotation of all wheels. The system is advantaged in that the chassis height, the wheel direction and the wheel base of the unmanned vehicle can be changed, and diversity, high trafficability and stability of the unmanned vehicle during running are improved.

The invention provides an intelligent integrated robot cavity mirror system with a target positioning function. The intelligent integrated robot cavity mirror system comprises an integrated cavity mirror system and a processing system, wherein the integrated cavity mirror system comprises a plurality of functional modules and a central control unit for controlling the working of the functional modules; the functional modules comprise an pneumoperitoneum instrument, a man-machine interaction screen, a cold light source and a camera, wherein the pneumoperitoneum instrument is used for inflatinga cavity, and comprises a proportional control valve, an on-off electromagnetic valve, an air release valve, an air flow sensor and an air pressure sensor; the processing system is used for dynamic target positioning. The intelligent integrated robot cavity mirror system can solve the problem of video shake caused by that air pressure changes rapidly at the moment caused by the opening and closingmoment of the switch valve, and effectively improve the sensitive problem of noise.

The invention provides a photovoltaic panel transfer device for construction of a photovoltaic power station. The device comprises: a guide table which is used for guiding and angle adjustment; two moving pieces which are combined with a rotating plate and a rotating rod to achieve overturning, angle adjustment and position adjustment of a clamping device; a connecting plate, wherein the bottom of the connecting plate is connected with the other end of the rotating plate through an air cylinder; the clamping device fixedly arranged at one end of the connecting plate and used for clamping the photovoltaic panel and assisting in adjusting the height of the photovoltaic panel; and a plate storage table fixedly arranged on the outer side of the moving table. The clamping device is driven to rotate through the two groups of moving parts, and clamps the photovoltaic panel vertically erected on the panel storage table for installation. The device is accurate and stable in angle and position adjustment, the photovoltaic panel is flexible to take and use, and the construction efficiency can be effectively improved.

The invention discloses a strip-type tapping switch for a triangular three-dimensional wound iron core transformer, and belongs to the field of changeover switches. The strip-type tapping switch comprises a base, an adjusting mechanism and three tapping mechanisms, wherein the first tapping mechanism, the second tapping mechanism and the third tapping mechanism are respectively distributed at three corners of the same triangle; the first tapping mechanism comprises a first static contact assembly fixed on the base and a first movable contact assembly mounted on the first static contact assembly; the second tapping mechanism comprises a second static contact assembly fixed on the base and a second movable contact assembly mounted on the second static contact assembly; the third tapping mechanism comprises a third static contact assembly fixed on the base and a third movable contact assembly mounted on the third static contact assembly. The tapping switch disclosed by the invention is low in manufacturing cost, simple in lead wire structure and efficient in material saving for lead wire manufacturing; a wiring position can be close to a tapping wire of each coil of the triangular three-dimensional wound iron core transformer, and no lead wire clamps are needed on a device body.

The invention relates to the field of quartz glass processing, which in particular to an auxiliary device for welding a quartz tube branch. The device comprises a machine tool body bearing platform, acircular pipe chuck clamping device, a branch pipe clamping device and a branch pipe clamping translation device, the branch pipe clamping translation device is connected to the machine tool body bearing platform; and the circular pipe chuck clamping device comprises a first round pipe chuck clamping device body and a second round pipe chuck clamping device body. A first clamping jaw is arrangedon the first circular pipe chuck clamping device; the first round pipe chuck clamping device is provided with a first clamping jaw, the second round pipe chuck clamping device is provided with a second clamping jaw, the first clamping jaw corresponds to the second clamping jaw, the first round pipe chuck clamping device and the second round pipe chuck clamping device are located at the two ends ofthe circular pipe bearing platform respectively, and the branch pipe clamping device is fixedly connected to the branch pipe clamping translation device. The device has the advantages of being high in precision, short in machining time, low in manpower consumption and high in stability.

The invention provides an endoscope intelligent edge computing system equipped with a central control module. The computing system comprises an integrated endoscope system and a processing system. Theintegrated endoscope system comprises a plurality of functional modules, a central control unit for controlling working of a plurality of functional modules and a power supply device for supplying power to a plurality of functional modules. A plurality of functional modules include a pneumoperitoneum instrument for inflating the cavity, a human-computer interaction screen, a cold light source anda camera. The pneumoperitoneum instrument comprises a proportional control valve, a switching electromagnetic valve, a bleed valve, an air flow sensor and a pressure sensor. The power supply device comprises a switching power supply and a plurality of electromagnetic interference suppression circuits. The processing system is used for processing the video so as to obtain a clear video. The problem of video jitter caused by the fast instantaneous change of the air pressure due to the opening and closing moment of the switching valve can be avoided so as to avoid mutual transmission of the electromagnetic interference signals between all the functional modules and provide the real-time and clear endoscopic video for the operation.

The invention provides a mobile intelligent integrated endoscope system provided with a high-definition video processing module. The mobile intelligent integrated endoscope system provided with the high-definition video processing module comprises an integrated endoscope device and a processing device, wherein the integrated endoscope device comprises a plurality of functional modules, a central control unit for controlling work of the plurality of functional modules and a power supply device for offering power supply to the plurality of functional modules; the plurality of functional modulescomprise pneumoperitoneum apparatuses for inflating lumens, user-machine interactive screens, cold light sources and video cameras; the pneumoperitoneum apparatuses comprise proportional control valves, switching electromagnetic valves, pressure relief valves, airflow sensors and air pressure sensors; the power supply device comprises a switch power supply and a plurality of electromagnetic interference suppression circuits; and the processing device is used for positioning a dynamic target and processing videos, so as to obtain clear videos. According to the mobile intelligent integrated endoscope system provided by the invention, a problem of video jitter caused by instantaneous change of air pressure at the moment that the switching valves are turned on and off can be solved, so that real-time clear endoscope videos can be provided for operations.

The invention discloses a colloid mill, which is widely used in the fields of food, medicine, chemical industry and the like. A leak-proof tube is added to the shaft hole in the inner cavity of the body to form a whole. The flat mouth of the leak-proof tube is slightly higher than the discharge port. The leak pipe (shaft hole) passes through, and the shaft head of the main shaft is provided with a dynamic grinding body, which matches the static grinding body on the machine body, and a circular steel ball groove is added on the static grinding body and the adjustment ring A circular steel ball tank is added, and the tank is filled with steel balls. The static grinding body is matched with the upper adjustment ring and the adjustment cover. The hopper is installed on the adjustment cover, and the main shaft of the feed inlet of the hopper is equipped with a multi-blade stirring feeder. , the biggest advantage of the present invention is that it is not easy to idling under long-term high-speed operation, prevent damage to the body and cause leakage, and reduce the negative force of the motor, accurate and stable regulation, easy and flexible, and simple structure.

The invention provides a self-recommended pneumoperitoneum instrument with pneumoperitoneum flow control. The pneumoperitoneum instrument includes a central control unit, a ratio control valve, a switching solenoid valve, a gas flow sensor and a gas pressure sensor. The ratio control valve, switching solenoid valve, gas flow sensor and gas pressure sensor are arranged on a gas supply pipeline andare connected to the central control unit. The central control unit is used for obtaining a gas flow parameter and a gas pressure parameter and outputting a PWM signal according to the gas flow parameter and a preset standard gas flow parameter when the gas pressure parameter is less than a preset first gas pressure parameter, wherein the PWM signal is used for adjusting switching time ratio of the control valve so as to adjust the gas flow parameter in the gas supply pipeline. The central control unit is also used for closing the ratio control valve and the switching solenoid valve when the gas pressure parameter is greater than or equal to the first gas pressure parameter. The self-recommended pneumoperitoneum instrument with pneumoperitoneum flow control can improve the visual effect.

The invention discloses a colloidal mill which is widely used in the areas of food, medication and chemical industry. The invention adds a anti-leak pipe on the axle hole of inner chamber of main body to integrate as a whole, while said anti-leak pipe is little higher than the discharge hole; the main axis is through the anti-leak pipe while its head has a movable mill part matched with the stable mill part on the main body; round steel ball grooves are added on the stable mill part and the regulation ring, while the grooves are filled with steel balls; the stable mill part is matched with said regulation ring and regulation cover; the hopper is mounted on the regulation cover while the main axis of its charge hole has a mixing charger with several blades. The chief advantage of said invention is that the invention can avoid bland run when running in high speed and for long time, therefore, it can avoid the leakage of main body, reduce the load of motor, while it can realize stable regulation, and simple structure.

The invention relates to the field of quartz sand production, in particular to a fast quartz sand crushing device which comprises a support mounting cylinder vertically arranged; a plurality of support mounting columns are arranged at the lower edge of the support mounting cylinder at equal angles; an operation mounting cylinder is vertically arranged right above the support mounting cylinder; a cambered surface mounting cylinder is arranged at the lower end of the operation mounting cylinder; the lower end of the cambered surface mounting cylinder is connected with the upper end of the support mounting cylinder; a porous guiding plate is obliquely arranged in the operation mounting cylinder; and the operation mounting cylinder matched with the left end of the porous guiding plate is provided with a feeding gate. Primary crushing is finished through periodic lifting crushing; and a lifting guiding and adjusting structure is matched with conical surface to rotate and crush so as to finish secondary crushing, and the precision of secondary crushing can be stably adjusted, so that the fast quartz sand crushing device can be adapted to different processing requirements and is wide in applicable range and high in practicality.

The invention provides a mobile integrated cavity mirror system with pneumoperitoneum control and electromagnetic suppression functions, which comprises a plurality of functional modules, a central control unit for controlling the operation of the plurality of functional modules and a power supply device for supplying power to the plurality of functional modules. A plurality of functional modulescomprises a pneumoperitoneum apparatus, a man-machine interaction screen, a cold light source and a camera, wherein the pneumoperitoneum apparatus is used for inflating a cavity. The pneumoperitoneumapparatus comprises a proportional control valve, a switch electromagnetic valve, an air release valve, an air flow sensor and an air pressure sensor. The power supply device includes a switching power supply and a plurality of electromagnetic interference suppression circuits. The mobile integrated cavity mirror system with pneumoperitoneum control and electromagnetic suppression functions can solve the problem of video jitter caused by the instantaneous change of the air pressure caused by the opening and closing moment of the switch valve, and avoid the mutual transmission of electromagnetic interference signals among the functional modules.

The invention discloses a hand surgery functional position bolster, and belongs to the field of medical rehabilitation care instruments and equipment. According to the invention, an upper arm supporting pad is movably connected to one side of the end of a forearm supporting pad. A snap rotation mechanism is horizontally arranged on the upper arm supporting pad along the middle of the side of the forearm supporting pad. A snap support connection plate is arranged between an arm support placement base plate and a forearm support rotation plate. The ends of the upper and lower sides of the snap support connection plate are respectively hinged to the forearm support rotation plate and the arm support placement base plate. A support plate adjusting mechanism is arranged between the arm supportplacement base plate and the forearm support rotation plate. Forearm limit mechanisms are arranged on the two sides of the forearm support rotation plate. A rehabilitation training mechanism is arranged on the upper side of an end of the forearm support rotation plate. The hand surgery functional position bolster provided by the invention has the advantages of reasonable structural design and convenient operation. With the bolster, a supporting position can be highly efficiently and conveniently adjusted according to patient arm medical care needs, such that patient arms can be stably and comfortably placed and supported. The bolster also has an arm rehabilitation training function, meeting medical care needs.

The invention is directed to the provision of a method for manufacturing a crystal oscillator manufacturing method that can achieve a highly precise fine adjustment without applying unnecessary external force to a crystal oscillator, and that can adjust a plurality of crystal oscillators in a collective manner. More specifically, the invention provides a method for manufacturing a crystal oscillator includes a first etching step for forming a prescribed external shape, an electrode forming step for forming an electrode at least in a portion of a surface of the external shape, a leakage amount measuring step for measuring leakage amount associated with leakage vibration of the external shape, and a second etching step for etching the external shape by an amount that is determined based on a measurement result of the leakage amount measuring step so as to adjust balance.