40results about How to "Precise lift control" patented technology

The invention discloses a pressure cooker with a pressure-limiting valve control structure. The pressure cooker comprises a cover. A pressure-limiting valve component is arranged on the lateral side of the cover, and comprises an exhaust hole communicated with the cover in the thickness direction. A gravity-type pressure-limiting valve is arranged in an upper end gap of the exhaust hole in a sleeved mode, can only ascend and descend on an exhaust pipe axially and cannot rotate circumferentially. A pressure-limiting valve height adjusting step is arranged at the root of the exhaust hole rotationally in an encircling mode, and encircles the circumferential outer side of the exhaust pipe. Three pressure-limiting valve steps with different heights are arranged in the thickness direction of thecover sequentially, and the adjacent steps are in smooth transition. A step contact is arranged at the lower end of the pressure-limiting valve in a protruded mode, and can contact one of the pressure-limiting valve steps correspondingly. The pressure cooker has the advantages that the pressure-limiting valve is arranged on the lateral side of the cover, the center of the cover can be reserved for arrangement of a lifting-type handle, and the function of accurately controlling ascending and descending of the pressure-limiting valve is provided.

The invention provides a continuous production system of azo reactive dye using supergravity. Firstly, a supergravity reactor is applied to a coupling reaction, which can greatly increase the reactionconversion rate and improve the quality of the product, and a spiral coil reactor is adopted for performing a diazotization reaction during the production. Compared with a current method that the diazotization reaction is performed by adopting a stirred tank reactor, the temperature rise of the system temperature can be accurately controlled, the diazotization reaction time is significantly shortened, the decomposition of diazonium salt is reduced to a large extent, and the industrial continuous production can be achieved.

The invention discloses a valve lift control device of a fully variable hydraulic valve mechanism and an internal combustion engine, and belongs to the field of air distribution mechanisms and fuel supply systems of internal combustion engines. When a plunger of the valve lift control device ascends to the position where a circumferential annular groove and an oil leakage hole communicate, hydraulic oil in a plunger oil cavity and a piston oil cavity flows into an energy storage cavity through an axial straight groove, the circumferential annular groove, the oil leakage hole and a first low-pressure oil duct, and the pressure and amount of oil in the plunger oil cavity and the piston oil cavity are reduced, so that the maximum lift of a valve is reduced, and the valve falls back in advance. By controlling the rotation angle of the plunger, changing duration of communication of the circumferential annular groove and the oil leakage hole, adjusting the minimum effective circulation area formed by the circumferential annular groove and the oil leakage hole, and controlling the amount of hydraulic oil flowing out of the oil leakage hole, the maximum lift and descending time of the air valve are changed. The valve lift control device is simple in structure, reliable in operation, low in cost and suitable for internal combustion engines with cam shafts on the upper portions, lower portions and middles.

The invention discloses a suspension and lifting system for a large-area building, and a using method thereof, and particularly designs a multi-point hydraulic volume synchronization system controlledby a computer. According to the characteristics of the large-area building, the large-area building needs to be controlled in a partitioned mode in the lifting and horizontal-moving processes of thelarge-area building, position close-loop control is conducted between areas, and pressure closed-loop control is conducted in the areas. According to the suspension and lifting system, pressure closed-loop and position close-loop double-control selection modes can be achieved; and partitioned position control, area internal force suspension control and overall lifting speed control over a large-area component can be achieved, and overall precise control over overall suspension and lifting of the large-area component is achieved finally.

The invention discloses a golf swing training device. The device comprises an upright column, an adjusting device, a swing device, a sliding module and a handle. The adjusting device comprises a lifting module and a rotary module, the lifting module drives the adjusting module to ascend and descend along the upright column, the rotary module is arranged on the lifting module, a swing rail is in an arc shape, the middle of the swing rail is connected with the rotary module, the sliding module is disposed in the swing rail, and one end of the handle is connected with the sliding module through a rope. The swing motion track is arranged into the arc-shaped swing rail, the handle is arranged on the swing rail, the motion track is simulated when a person holds a golf club handle with the two hands, and the phenomenon that when a student simulates the swing motion by holding a whole golf club during training, the golf club is likely to deviate is avoided; the swing rail is arranged on the upright column through the adjusting device so as to achieve convenient adjustment in the training process of students with different heights and swing angles.

The invention discloses a valve pressing mechanism of a cylinder cover of a test bench for detecting flow property of an air passage of an internal combustion machine. The valve pressing mechanism mainly comprises two parts of a frame component and a detection component. A frame component structure comprises that: a vertical plate is fixed on the plane of the test bench by a locking wheel; and a vertical arm is connected with a vertical plate shaft. Two ends of a transverse arm are fixed with the vertical arm and a locking wheel of a supporting rod respectively. The supporting arm is fixed on a magnetic seat; and the magnetic seat is fixed on the plane of the test bench. A detection component structure comprises that: a spherical pressure head is fixed with the lower end of a socket connector which is inserted into an inner cavity of the detection component. The upper end of the socket connector is fastened with a spring seat by screw thread. A spring is pressed into the inner cavity of the detection component; and the top end of an extending shaft of a linear motor and a shaft sleeve are fixedly connected and are locked by lock nuts. The detection component is assembled in the middle position of the transverse arm. The valve pressing mechanism has the characteristics that the valve pressing mechanism can meet the test of the air passages of the cylinder covers with various valve slope angles through angle adjustment of the vertical arm, ensure that the pressure head can be vertically pressed into the valve, realize the zero judgment of the lift range of the engine valve and the precise control of the lift range and improve detection precision.

The invention discloses a high-strength and high-efficiency bismuth telluride block. The bismuth telluride block is in a lamellar shape; the bismuth telluride block is a P-type lamellar bismuth telluride block of Bi0.5Sb1.5Te3+x, and the value range of x is 0-0.05, or, the bismuth telluride block is an N-type lamellar bismuth telluride block of Bi2Te3-ySey, and y ranges from 0 to 0.3. The bismuth telluride block is of a special lamellar structure and has the double characteristics of high orientation degree and grain refinement, and the bismuth telluride block can be directly used for vacuum hot pressing sintering or vacuum thermal deformation sintering without being cut and / or ground into powder. And the bismuth telluride-based thermoelectric material with high thermoelectric figure of merit and high strength can be rapidly prepared.

The invention discloses a lifting control method and device for a tundish car of a continuous casting machine. The lifting control device is characterized in that a PLC (programmable logic controller)is connected with frequency converters in a communication manner; the frequency converters are connected to lifting motors; the lifting motors are connected to the tundish car through lifting assemblies; and the lifting assemblies comprise speed reducers. The lifting control method comprises the following steps that the tundish car is controlled to rise / fall according to an instruction of the PLC; the rotating parameters of the lifting motors and the diameters of the speed reducers are acquired by the PLC; the instantaneous moving speed of the tundish car is calculated by the PLC according tothe rotating parameters and the diameters of the speed reducers; the real-time moving distance of the tundish car within each acquisition time period is calculated by the PLC according to the instantaneous moving speed; and the calculation results of the real-time moving distance are accumulated and then the total moving distance is acquired. According to the lifting control method and device, the PLC is connected with the frequency converters in a communication manner and kept from a high-temperature environment on the site, so that the tundish car can be more accurately positioned in real time, the lifting position of the tundish car can be more accurately controlled, and the plate blank production quality and the entire production efficiency can be improved.

The invention belongs to the field of vehicle accessories, and particularly relates to a folding seat which can be folded automatically and occupies small space after being folded. The folding seat comprises a support connected with a bearing device, wherein a vertical sliding mechanism is arranged on the support; a folding seat back is connected with the vertical sliding mechanism; a rotating shaft is arranged at the middle lower part of the folding seat back; a rotary power device is arranged on the vertical sliding mechanism, and is connected with the rotating shaft through a rotary transmission mechanism; the two ends of the rotating shaft are connected with the two sides of the tail part of a folding stool through an arc turning plate; the folding stool can rotate with the rotating shaft; a vertical transmission mechanism is arranged between the support and the vertical sliding mechanism; a vertical power device is arranged on the vertical sliding mechanism, and is connected with the vertical transmission mechanism. The invention provides the two-section type folding seat which can be opened and folded automatically, a user does not need to fold the seat by hands, and the occupied space of the folding seat can be effectively narrowed after the folding seat is folded, so that space used by people inside an automobile is enlarged.

The invention discloses a novel automatic lifting nitrogen blowing instrument, and belongs to technical field of the sample concentration device. The nitrogen blowing instrument comprises a base, a heating bath is arranged in an upper end of the base, a pre-heating device is arranged in a right side of the base, and a right side of the upper end of the base is connected with a lifting device through a bracket; the lifting device comprises an electric sliding block, a linear guide rail and a lifting plate; the electric sliding block is sleeved on the linear guide rail and longitudinal moves along the linear guide rail; the electric sliding block is connected with the lifting plate, and a nitrogen blowing pipe and a blowing needle are arranged on the lifting plate. The nitrogen blowing instrument disclosed by the invention is simple in structure and reasonable in design; the electric height regulation is realized by improving the structure; the precise and stable lifting control is realized through the automatic lifting device; the working efficiency is improved, and the manpower cost is saved; and the nitrogen blowing instrument is suitable for the sample with is small in sample size and needs batch nitrogen blowing.

The present invention relates to a probe structure for a thermotherapy device and, more particularly, to a probe structure for a thermotherapy device comprising: a body (10); a support member (20) arranged on the body (10) to be able to pivot; a probe member (30) which is rotatably connected to the support member (20), and to which a user's load is applied; and a load sensing unit (40) which is provided on the body (10), and to which the user's load is transferred by the support member (20), wherein the load sensing unit (40) is positioned below the center of rotation of the support member (20). Therefore, the purpose of the present invention is to propose a probe structure for a thermotherapy device having a load sensing unit arranged below the center of rotation of the support member such that, when a contact with the user's body applies a load to the probe member, the horizontal partial pressure is counterbalanced by the moment of rotation of the probe member itself, and only the vertical partial pressure pressurizes the load sensing unit, thereby applying a static load, and the resulting accurate pressure detection makes it possible to precisely control the upward / downward movement of the probe structure, the vertical movement velocity, etc.

The invention provides a continuous production method of azo reactive dye by using supergravity. Firstly, a supergravity reactor is applied to a coupling reaction, which can greatly increase the reaction conversion rate and improve the quality of the product, and a spiral coil reactor is adopted for performing a diazotization reaction during the production. Compared with a current method that thediazotization reaction is performed by adopting a stirring tank reactor, the temperature rise of the system temperature can be accurately controlled, the diazotization reaction time is significantly shortened, the decomposition of diazonium salt is reduced to a large extent, and the industrial continuous production can be achieved.

The invention belongs to the technical field of glass machining, and discloses a 3D mobile phone glass flat grinder, which includes a frame, a workbench and a control unit. 3D mobile phone glass is set, and the upper plate is connected to the upper plate through a screw on the beam of the frame. The upper plate is located directly above the lower plate. The control unit controls the servo motor to drive the upper plate to lift vertically. The upper plate A polishing surface is arranged below, and the upper plate and the lower plate realize relative rotation, and the polishing surface realizes flat grinding of the 3D mobile phone glass. The invention precisely controls the displacement of the upper plate through the lead screw, so that the displacement and weight of the upper plate on the 3D glass can be controlled.

The invention provides a method and system for controlling self-learning of a continuous variable valve lift system. The method comprises the steps that a top dead center self-learning result and a credibility result of a lift signal in an operation process of an engine is obtained, and whether the continuous variable valve lift system needs self-learning or not is judged; if the continuous variable valve lift system needs self-learning, whether the continuous variable valve lift system can conduct self-learning or not is judged; if the continuous variable valve lift system does not need self-learning, the continuous variable valve lift system enters a normal lift control mode, if the continuous variable valve lift system can conduct self-learning, the continuous variable valve lift systemis controlled to conduct self-learning; and if the continuous variable valve lift system can not conduct self-learning, the continuous variable valve lift system is controlled to enter a fault lift control mode. According to the method and the system, the problem that the continuous variable valve lift system is low in lift control precision can be effectively solved.

The invention relates to the technical field of lamplight control, in particular to a vertical movement lamp control main machine and a vertical movement lamp group control system. The main machine comprises a machine case, a power module, a master control module and a motor are arranged inside the machine case, the power module provides electric energy for the master control module and the motor,and the master control module controls the rotating state of the motor; a small synchronizing wheel is connected to a rotating shaft of the motor and is connected with a large synchronizing wheel through a synchronizing belt, the large synchronizing wheel is coaxially connected with a wire reel, one end of a suspension line is wound around the wire reel, and the other end of the suspension line penetrates a wire hole formed in the bottom of the machine case to be connected with a lamp; an acrylic suspending line guide block is arranged at the position, corresponding to the wire hole, of the inner side of the bottom of the machine case, a through hole in an inverted cone shape is formed in the upper surface of the acrylic suspending line guide block, the suspension line penetrates the through hole to be connected with the lamp, and excursion of the lamp in the horizontal direction can be avoided. According to the scheme, the lamp can be lifted and moved in the vertical direction, and the problem that decorative lamps can only be statically displayed in the past is solved.

The invention discloses a portable semi-automatic flame cutting machine which comprises a body control box and angle-adjustable cutting nozzles. A motor box is fixedly connected to the right side of the top of the body control box, a vertical moving rod penetrates through the right side of the interior of the motor box, a rack is embedded into the left side of the motor box in a connection mode, and a servo motor is fixedly connected to the middle of an inner cavity of the motor box. The invention relates to the technical field of flame cutting machines. According to the portable semi-automatic flame cutting machine, the servo motor and a gear are utilized to cooperate with the rack, and therefore ascent and descent of the vertical moving rod can be accurately controlled, and then the angle-adjustable cutting nozzles can cut wing plates in the mode of being capable of ascending and descending; the angle-adjustable cutting nozzles are arranged on the two sides, and therefore the wing plates on the two sides can be cut at one time even though H-shaped steel is not reversed, the reversing frequency is reduced, and the working efficiency is improved; and meanwhile,the situation that aweb plate part is completely cut off can be guaranteed, a guide rail and other driving structures are omitted by the machine, and therefore the overall weight of the machine can be greatly reduced, and the machine is convenient to carry and operate.

The invention relates to the technical field of building equipment, in particular to a climbing frame control method, an electric box and a storage medium. The method comprises the following steps: determining an ascending and descending amplitude value corresponding to ascending and descending of a climbing frame; when the operation mode of the climbing frame is that the climbing frame is allowed to ascend and descend, controlling a plurality of electric hoists in the climbing frame to ascend and descend according to the ascending and descending amplitude value, and obtaining position information of the multiple electric hoists after ascending and descending; adjusting the positions of the multiple electric hoists according to the position information; and after the positions of the multiple electric hoists are kept consistent, returning to execute the steps of controlling the multiple electric hoists in the climbing frame to ascend and descend according to the ascending and descending amplitude value and obtaining the position information of the multiple electric hoists after ascending and descending until the climbing frame reaches the target position. The plurality of electric hoists in the climbing frame are controlled to ascend and descend according to the ascending and descending amplitude value, and the positions of the electric hoists are adjusted according to the position information of the electric hoists after ascending and descending, so that the problem of deformation of the climbing frame in the ascending and descending process is solved, and the use safety of the climbing frame is effectively improved.

The invention discloses an electronic temperature regulator assembly for a heavy diesel engine. The electronic temperature regulator assembly comprises a cover, a joint (5), a push rod (6), a large spring (7), a sensor (8), a valve seat (9), a valve (10), a small spring (11), a push rod lock (12) and a support (13). The valve seat (9) comprises a valve seat bottom plate (15) and a valve seat side plate (16), circulating holes (19) are formed in positions among support ribs (17) on the valve seat bottom plate (15), water can flow through the circulating holes (19), the valve (10) is of a cylindrical structure, the upper end of the valve (10) corresponds to sealing steps in the valve seat bottom plate (15), openings (20) are formed in positions among connecting ribs (18) on the lower end surface of the valve (10), the water can flow through the openings (20), the lower end of the sensor (8) is connected with the upper end of the push rod lock (12), and the lower end of the push rod lock (12) is connected with the connecting ribs (18) on the lower end surface of the valve (10). The electronic temperature regulator assembly has the advantages that the electronic temperature regulator assembly is reliable in performance and applicable to cooling systems of high-flow heavy diesel engines.

The invention discloses an umbrella cover seamless colloid laminating device and method. The device comprises a support frame, a drying structure and a pressing structure, wherein a drive roller is mounted on the left side of the support frame, a conveying roller is mounted on the right side of the support frame, a transitional roller capable of being adjusted vertically is mounted in a trip-shaped hole, a pressing bracket is fixed to the rear end of the support frame, the pressing structure is mounted on the pressing bracket, a base plate made of a stainless steel material is arranged below the pressing structure and fixed to the support frame, a PLC (programmable logic controller) is fixed to the side surface of an auxiliary supporting leg, two air suction fans are fixed to the support frame located below the drying structure, and the pressing bracket and a drying bracket fixed to the support frame are both of L-shaped structures. According to the device, an electric cylinder is adopted to push a press plate to perform pressing work, springs are mounted on guiding rods connected between the pressing plate and a lifting plate, a buffering effect is realized in a pressing process,pressing and drying are integrated, the processes are integrated, an umbrella cover laminating process is simplified, and efficiency and accuracy are improved.

The invention discloses a plastic spraying system and a plastic spraying process applying the same, and relates to the technical field of surface treatment. The plastic spraying system and the plasticspraying process solve the problems that for the plastic spraying process in the prior art, the labor cost is high, operation personnel inconveniently carry out operation, and the operation personnelhave the safety risk. According to the technical scheme, the plastic spraying system is characterized by comprising a plastic spraying room and a guide rail conveying line, wherein the guide rail conveying line is provided with a plurality of hanging frame assemblies for allowing workpieces to be subject to plastic spraying to be hung, a spraying box with an opening in the top is arranged in theplastic spraying room, each hanging frame assembly comprises a base frame and a hook which is installed on the corresponding base frame in a telescopic mode and is used for allowing one workpiece to be subject to plastic spraying to be hung, a first driving element for driving the hooks to enable the workpieces to be subject to plastic spraying to be put into / taken out of the spraying box is arranged in the plastic spraying room, and a spray gun with a gun opening facing the center of the spraying box is arranged in the spraying box. According to the system and the process, the effect that a manual plastic spraying mode is replaced by an automatic mode in the plastic spraying treatment is achieved so that on the premise of protecting the safety of operators in the plastic spraying process,the labor cost of a plastic spraying production line can be reduced, and the plastic spraying operation is convenient.

The invention discloses an expanded-base prestressed composite anchor cable uplift pile and a preparation method and equipment, the expanded-base prestressed composite anchor cable uplift pile comprises a main rod, the outer side of the main rod is uniformly sleeved with lantern rings, connecting rods are uniformly mounted on the outer sides of the lantern rings, and round steel bars are jointly mounted at the ends, away from the lantern rings, of the connecting rods; straight steel bars and prestressed steel strands are jointly and evenly installed on the inner sides of the multiple sets of round steel bars. After an uplift pile reinforcement cage is placed in a hole in the ground, the positions of round steel bars and straight steel bars are fixed, a main rod is controlled to descend, four sets of first telescopic rods gradually push away adjacent arc-shaped baffles after being shortened by a certain length, and when the arc-shaped baffles are unfolded, bottom expanding equipment of the arc-shaped baffles is extruded outwards to form a bottom expanding reinforcement cage; the pile body at the bottom expanding part is filled with the arc-shaped baffles, so that the arc-shaped baffles can be better attached to the pile body to reinforce the expanding head to enable the expanding head to have enough strength, and the expanding head stably provides upward resistance for the whole uplift pile. And pre-stress post-tensioning is conducted after construction is completed.

The invention discloses a beta-ray-method three-channel atmospheric particulate monitor which comprises a man-machine interface, a dust pumping mechanism, a sampling device used for collecting air flow, a filter paper rack used for installing filter paper, a pressing device used for pressing the filter paper, and a detecting device used for detecting beta-ray loss. The filter paper on the filter paper rack penetrates through the pressing device and the detecting device horizontally. The sampling device is located above the filter paper on the filter paper rack and provided with three-way channels. The dust pumping mechanism is located below the filter paper on the filter paper rack and provided with three-way channels corresponding to the channels of the sampling device one to one. The structure of the whole monitor is simplified, and the sampling device provided with the three-way channels and the dust pumping mechanism provided with the three-way channels are arranged, so that the beta-ray-method three-channel atmospheric particulate monitor is provided; three parameters can be sampled and monitored at the same time, and use is convenient.

The invention belongs to the field of vehicle accessories, and particularly relates to a folding seat which can be folded automatically and occupies small space after being folded. The folding seat comprises a support connected with a bearing device, wherein a vertical sliding mechanism is arranged on the support; a folding seat back is connected with the vertical sliding mechanism; a rotating shaft is arranged at the middle lower part of the folding seat back; a rotary power device is arranged on the vertical sliding mechanism, and is connected with the rotating shaft through a rotary transmission mechanism; the two ends of the rotating shaft are connected with the two sides of the tail part of a folding stool through an arc turning plate; the folding stool can rotate with the rotating shaft; a vertical transmission mechanism is arranged between the support and the vertical sliding mechanism; a vertical power device is arranged on the vertical sliding mechanism, and is connected with the vertical transmission mechanism. The invention provides the two-section type folding seat which can be opened and folded automatically, a user does not need to fold the seat by hands, and the occupied space of the folding seat can be effectively narrowed after the folding seat is folded, so that space used by people inside an automobile is enlarged.

The invention discloses a multi-angle visual explosion-proof crane. The multi-angle visual explosion-proof crane comprises longitudinal translation tracks, a girder, a lifting mechanism and a cab. Thetwo longitudinal translation tracks are arranged and correspondingly arranged on the wall bodies of the two sides of a workshop. The girder is horizontally erected between the longitudinal translation tracks. The cab is connected to the lower portion of the edge of one side of the girder. The lifting mechanism is arranged in the middle of the girder. A vertical calibration camera is arranged on the lower end face of the lifting mechanism. A lens of the vertical calibration camera is vertically downward. The lower end face of one of the longitudinal translation tracks is connected with a rod body. A horizontal calibration camera is arranged on the one side of the tail end of the rod body. A display screen is arranged in the cab. The vertical calibration camera and the horizontal calibration camera are both connected with the display screen. By means of the manner, the positions of corresponding goods of the crane can be shot in real time at multiple angles through the cameras, and therefore the operation accuracy is improved.

The invention discloses a fluidized bed powder dipping manipulator, which includes a frame assembly, a hydraulic system, a fluidized bed, and a multistage oil cylinder to drive a mobile support so that the mobile support can move linearly on the track of the frame assembly, thereby driving the pendulum assembly and lifting The oil cylinder moves left and right. The telescopic movement of the lifting cylinder drives the swing frame assembly to swing up and down with the hinge fulcrum of the swing frame assembly hinged on the mobile bracket as the center of rotation. In this way, it is possible to move the parts to be coated from outside the fluidized bed to inside the fluidized bed. Effectively control the dipping time of the parts to be coated to ensure the thickness and uniformity of the coating. After the parts to be coated are dipped in powder, the rotation of the hydraulic motor drives the rotation of the parts to be coated and the vibration of the pneumatic vibrator quickly throws off the excess powder on the parts to be coated.

The invention discloses a continuous preparation method of gallium-based liquid alloy, which is based on crucible furnace equipment with a glove box. In the preparation process, the preparation process of gallium-based liquid state at least includes: A. material preparation, B. preheating the crucible furnace , C. Sealed heating to refine gallium-based liquid alloy, D. Continuous circulation heating to refine gallium-based liquid alloy. Multiple steps are integrated together to form a continuous production line, and the bubbling slag removal process and new crucible structure design are introduced to form an integrated smelting method for the continuous preparation of gallium-based liquid alloys. The method has the characteristics of high degree of automation, small floor space and low energy consumption, and can expand production by increasing the number of equipment, adapt to the needs of large-scale production, and reduce production costs.

The present invention provides a method and system for controlling self-learning of a continuously variable valve lift system. Whether the variable valve lift system needs self-learning; if the continuously variable valve lift system needs self-learning, then judge whether the continuously variable valve lift system can perform self-learning, if the continuously variable valve lift system does not need self-learning, Then the continuously variable valve lift system enters the normal lift control mode. If it is judged that the continuously variable valve lift system can perform self-learning, then control the continuously variable valve lift system to perform self-learning. If the system cannot perform self-learning, the continuously variable valve lift system is controlled to enter the failure lift control mode. The method and system in the invention can effectively improve the problem of low lift control accuracy of the continuously variable valve lift system.