31results about How to "Stable opening and closing" patented technology

The utility model relates to the technical field of automobile part die-casting, in particular to an automobile part die-casting die. The technical problems that after an existing automobile part die-casting die is subjected to die casting for a long time, heat in the die cannot be taken away in time, the defects of shrinkage cavities, hot cracks and the like of castings are caused, and serious quality problems are caused are solved. According to the technical scheme, the automobile part die-casting die comprises a bottom plate, a supporting assembly, a fixed die assembly, a water cooling assembly, an air cooling assembly, a movable die assembly and a pressing assembly; compared with the problems of shrinkage cavities, hot cracks and other defects of castings caused by the fact that heat is difficult to take away in time in the die-casting process of a traditional automobile part die-casting die, a secondary cooling method is adopted in the automobile part die-casting die, cooling liquid is subjected to secondary air cooling, the temperature of circulating cooling liquid is greatly reduced, and therefore the cooling effect is improved, and the service life of the automobile part die-casting die is prolonged. And the situation that the quality of a casting finished product is affected due to deformation of the mold caused by overheat because heat cannot be taken away in time is prevented.

The invention discloses feeding, welding and discharging integrated welding equipment which comprises a workbench, a first feeding device, a spot welding paste mechanism, a second feeding device, a welding mechanism and a discharging device, a rotating disc assembly is arranged on the workbench, a set of machining stations are arranged on the rotating disc assembly, each machining station is provided with an overturning type jig, and the overturning type jigs are arranged on the workbench. The workbench is provided with a first feeding station, a spot welding paste station, a second feeding station, a jig positioning station, a welding station and a discharging station. The first feeding device, the spot welding paste mechanism, the second feeding device, the welding mechanism and the discharging device are arranged on one side of the rotary disc assembly and arranged on a first feeding station, a spot welding paste station, a second feeding station, a welding station and a discharging station correspondingly. The whole equipment is optimized, automation of feeding, paste dispensing, upper and lower station alignment, welding and discharging is completely achieved, and the production efficiency of the equipment is effectively improved.

This utility model discloses a vacuum chamber cover lifting and opening device, including a support frame with a fixing hole at the bottom. A reducer is fixed on the support frame, and a handwheel is connected to the input end of the reducer. Output shafts are connected to the output ends on both sides of the reducer, and a winch is fixed on the output shaft. A wire rope for pulling the cover is fixed on the winch. This utility model reduces the workload of operators, reduces equipment maintenance costs, improves the overall operating efficiency and safety of vacuum equipment, meets the requirements for efficient cover operation in vacuum equipment, and has a safety protection structure to eliminate the risk of cover falling, ensure the safety of operators and equipment, reduce the bending deformation and damage to the cover caused by external forces, and avoid damage to the equipment that could lead to production delays.

The invention relates to the technical field of golf carts, and particularly discloses a golf cart roof adjustable fixing device which comprises a cart body, a base is fixedly connected to the top of the cart body, two sets of sliding rail mechanisms are arranged on the edge of the upper side of the base, a trunk is arranged between the two sets of sliding rail mechanisms in a sliding mode, and a driving mechanism is arranged on the base. A box cover is arranged on the upper side of the luggage box, a plurality of inserting grooves are fixedly connected to the inner wall of the luggage box, a plurality of partition plates are detachably connected into the inserting grooves, linkage supporting mechanisms are arranged between the luggage box and the two sets of sliding rail mechanisms, the luggage box can be controlled to be overturned to one side of the vehicle body, and the difficulty of storing articles is greatly reduced; especially for storing heavy articles, the articles are easier to store and take, certain potential safety hazards are avoided, and the possibility that the articles fall off during storage can be reduced.

The utility model provides a mixing device for polyethylene raw materials, and belongs to the technical field of machinery. The problem of poor stability in the prior art is solved. The mixing device for the polyethylene raw materials comprises a rack and a box body, a cavity is formed in the box body, an opening is formed in the upper end of the box body, the box body is fixedly connected to the rack, a discharging port is formed in the bottom of the box body and located in the middle of the rack, an opening and closing mechanism capable of opening and closing the discharging port is arranged at the discharging port, and the mixing device further comprises a crawling ladder and a base. The crawling ladder is fixedly connected to the outer side of the box body, and the base is fixedly connected to the bottom of the rack and can make contact with the ground in a large area. The polyethylene raw material mixing device is high in stability.

The utility model discloses a large water conservancy project gate water retaining structure which comprises a base, a slide way, a gate, a cross beam, a rack, a rotating shaft, a worm, a worm gear, a screw and a cleaning mechanism, the gate is opened and closed in the slide way in a sliding mode, the rack on the cross beam supports the rotating shaft and a worm gear and worm transmission system, and a driving motor drives the rotating shaft through a belt pulley set to drive the worm to rotate. When the gate needs to be opened, the worm gear drives the screw rod to ascend; when the gate needs to be closed, the screw rod descends to close the gate tightly, the cleaning mechanism on the cross beam comprises a rotating ring, a cleaning ring and a cleaning brush, sundries and stains on the surface of the screw rod are cleaned through linkage of a transmission shaft and a bevel gear and a rotating shaft, smooth operation is ensured, and the whole structural design is reasonable, easy and convenient to operate and suitable for various water conservancy projects. And efficient, stable and safe operation of the gate is ensured.

The valve plate control method, device and storage medium of the vacuum butterfly valve provided in the application, by acquiring the counter electromotive force signal generated inside the motor when driving the valve plate to rotate; judging whether the motor meets the preset low-speed condition based on the counter electromotive force signal; estimating the motion state estimation quantity of the motor based on the target state estimation mode corresponding to the judgment result, wherein the motion state estimation quantity at least includes the rotation speed estimation quantity; and driving the valve plate of the motor to complete the opening and closing operation through the preset closed-loop control logic based on the rotation speed estimation quantity. The application does not need an external position sensor, solves the problem that the valve plate is difficult to accurately control at the start-up and low-speed stages due to the weak counter electromotive force signal by fusing the estimation modes under different states, and realizes the accurate closed-loop control of the whole stroke of the valve plate.

The utility model discloses an automatic prickly pear slicer belongs to agricultural product processing equipment technical field. It includes frame, installation platform and the first chain that sets up around installation platform, and the first chain is evenly distributed and puts material seat, and puts material seat in proper order through the material station, and the head cutting slice station and the blanking station. The material groove is formed to the material seat through the "V" shaped clamping plate and the supporting plate, and the material groove opening and closing are controlled through the guide tip portion of first straight board and second straight board, realize automatic feeding and unloading. The head cutting slice station sets up the movable table of linear motion tracking module drive, is equipped with the head cutting mechanism and the slice knife on movable table, and the head is cut to the oblique insertion knife rotation through the lifting cylinder and the oblique insertion cylinder drive needle rod puncture, and the slice knife is driven to complete the slicing through the cutter cylinder. The utility model has solved the problem of the flesh waste, the slice uneven, the low efficiency and the high cost of traditional manual head cutting slice existence, has realized prickly pear processing's automation, high efficiency and slice homogenization, is applicable to the large -scale production.

The utility model provides a ground hook lock structure, which relates to the technical field of ground hook locks and comprises a lock beam, an opening and closing part arranged on the lock beam and a driving part used for driving the opening and closing part to move, the driving part comprises a mechanical driving part and an electric driving part, a lock column opening is arranged on the lock beam, and the opening and closing part comprises a first rotating plate and a second rotating plate. The first rotating plate is connected with a second rotating plate through a first spring, a hook plate is arranged on the second rotating plate, the mechanical driving part comprises a horizontal movable plate, and an extending plate is arranged on the horizontal movable plate; the electric driving part comprises a driving gear and a driving handle connected with the driving gear, and the driving handle is provided with an extending column used for being connected with the first rotating plate. On the basis of the same opening and closing structure, the mechanical driving part and the electric driving part are connected, it can be guaranteed that mechanical unlocking and electric unlocking are mutually independent, stable unlocking is guaranteed, the production cost is low, and the device is suitable for unlocking various roller shutter doors.

The invention discloses a shearing device for a rubber tape, and relates to the technical field of rubber tapes. A safety cover is mounted on the outer side of a movable shearing knife, and the movable shearing knife is always located in the safety cover in the process that the movable shearing knife is matched with a fixed shearing knife to shear the rubber tape; the arranged knife blocking frame can be attached to the upper surface of the rubber tape under the gravity action of the knife blocking frame, a gap is prevented from being formed between the rubber tape and the cloth feeding opening, and therefore the situation that fingers stretch into the gap to cause injury is avoided; the inner wall of the safety cover is fixedly connected with the knife sharpening bar through the torsional spring, the knife sharpening bar is in contact with the movable shear knife, and the knife edge of the movable shear knife can be repeatedly in contact with the knife sharpening bar in the process that the movable shear knife is repeatedly opened and closed to perform shearing action due to the fact that the connection between the knife sharpening bar and the safety cover has certain elasticity; therefore, the knife edge of the movable shear knife is always kept sharp, and the shearing effect is more stable.

The utility model discloses a range hood which comprises a shell assembly, a main air inlet is formed in the middle of the front face of the shell assembly, and secondary air inlets are formed in the left end and the right end of the bottom of the shell assembly respectively. And the air cabinet assembly is installed in the shell assembly, and the distribution ratio of suction force generated when the air cabinet assembly works at the main air inlet, the secondary air inlet on the left side and the secondary air inlet on the right side is 3: 1: 1. The range hood disclosed by the utility model has the characteristics of small occupied space and super-strong smoke gathering, and the oil smoke escape rate is reduced by more than 50% under the condition of the same-form range hood.

The invention belongs to the technical field of semiconductor processing, provides a wafer processing device, wafer thinning equipment and a wafer processing method, and aims to solve the technical problem that the processing cleanliness cannot meet the advanced packaging nanoscale requirement due to the fact that chippings are easy to overflow and pollute and impurities are generated by sliding friction between a stopper and a workbench in existing wafer ring-retaining thinning processing. The wafer processing device comprises a workbench, a main shaft, a first blocking piece and a second blocking piece, wherein the workbench is used for bearing a wafer, and the main shaft drives the grinding wheel with the diameter smaller than that of the wafer to thin the local surface of the wafer; the first blocking piece and the second blocking piece are arranged on the workbench and movably surround a main shaft operation area through air floatation, and at least one blocking piece can be opened in a pivoted mode and fixed through the supporting piece so that feeding and discharging of wafers can be achieved. Friction impurities are prevented from being generated through the air floating type blocking pieces, protection is formed through surrounding of the blocking pieces, chippings are prevented from overflowing, and the cleanliness of wafer thinning machining is improved.

This invention provides a concealed hinge suitable for narrow windows, comprising a window connector connected to the window sash and a frame connector connected to the frame. A first connecting plate connects the window connector and the frame connector, with one side of the first connecting plate rotatably engaged with the frame connector and the other side movably connected to the window connector. A second connecting plate connects the window connector and the frame connector, with one side of the second connecting plate rotatably engaged with the window connector and the other side movably connected to the frame connector, and the first connecting plate and the second connecting plate are rotatably engaged. This invention increases the load-bearing capacity of the hinge for narrow windows and is suitable for narrow window structures with compact hinge installation positions.

The utility model relates to converter device technical field, and disclose a kind of converter device of convenient feeding and discharging, including furnace body, the furnace body is composed of converter and top plate, this converter device of convenient feeding and discharging, when carousel rotates, the stirring groove of top surface opened will drive stirring rod, so that stirring rod drives sealing plate gradually located in fixed disc gradually slide to the outside of fixed disc, so that six groups of sealing plate gradually no longer seal control disc, so steel material can fall into converter, and when pneumatic cylinder rises, spring will push rotating sleeve reset so that rotating sleeve reversely rotates, so sealing plate will reseal control disc, by the start of pneumatic cylinder and the fixed angle of rotating sleeve each time rotation, so that sealing plate can stably open and close, so as to realize the effect of quantitative steel material into converter, avoid one-time input too much steel material to cause steel material to accumulate not easy smelting, also can more accurately control the quantity of steel material smelting.

The utility model relates to tension testing machine technical field discloses a tension testing machine protection cover plate convenient to open and shut, including base, one side fixedly connected with workbench no.

This utility model belongs to the field of civil defense technology, and particularly relates to an impact-resistant civil defense security door; it includes: a door frame with at least two door panels on its outer side; a rotating assembly mounted on the door frame and connected to the door panels; and a transmission mechanism connected to the rotating assembly to provide power for opening and closing the door panels; the transmission mechanism includes: a mounting plate mounted on the left and right sides of the outer side of the door frame by bolts; a frame mounted on the mounting plate; a cylinder rotatably connected to the frame via a rotating shaft; a fixed seat mounted on the outer side of the door panels by bolts, with the fixed seat position perpendicular to the frame position; and a connecting frame mounted on the cylinder piston rod, connected to the fixed seat. This utility model provides a safer, more efficient, and automatically opening and closing impact-resistant civil defense security door.

The utility model belongs to the technical field of valves, and particularly relates to a high-pressure regulating valve. Comprising a valve body, a valve assembly and a driving assembly, the valve body is internally provided with an upper cavity and a lower cavity, a partition plate is arranged between the upper cavity and the lower cavity, the valve body is provided with an inlet and an outlet, the inlet is communicated with the lower cavity, the outlet is communicated with the lower cavity, the valve assembly comprises a valve cylinder, and the valve cylinder is arranged in the valve body. The valve cylinder can be driven by the driving assembly to rotate, and the upper cavity and the lower cavity are communicated or separated. According to the valve, communication or separation of the upper cavity and the lower cavity is controlled by rotating the valve cylinder, a valve clack moving up and down is not needed, the flowing direction of fluid is different from the moving direction of the valve cylinder, the valve can be stably opened and closed, and the phenomenon that a traditional valve is unstable in operation is optimized.

The application relates to the technical field of vegetable and fruit storage and transportation, in particular to a foldable vegetable and fruit box which comprises a bottom plate, a front panel, side panels and a small door plate, the front panel and the side panels are hinged to the bottom plate through first hinge assemblies which can vertically slide, the hinge position of the side panels is higher than that of the front panel, when folding, the front panel is folded onto the bottom plate through the first hinge assemblies, the second front panel is moved upwards and stacked on the first front panel, the side panels are folded onto the front panel through the first hinge assemblies, the second side panel is moved upwards and stacked on the first side panel, the small door plate is connected to the front panel through second hinge assemblies, and the rotation angle of the small door plate is limited, which ensures stable opening and closing and does not affect folding, solves the problems of fixed structure and space occupation of traditional injection molding boxes, overcomes the defects of low capacity of a stacked box, inconvenience in taking and waste of the bottom space, and significantly improves the utilization rate of storage space and folding convenience through staggered folding and angle limiting technology.

The utility model provides a garden landscape observation device, which belongs to the technical field of garden landscape observation and comprises an instrument shelter, a plurality of shutters arranged on the outer surface of the instrument shelter, a mounting table fixedly connected in the instrument shelter, a temperature and humidity sensor arranged in the mounting table, and a temperature and humidity sensor arranged in the temperature and humidity sensor. By using the device, the problems that the installation time is increased, the working efficiency is reduced, meanwhile, the disassembly is inconvenient, the working efficiency is reduced, and the working efficiency is reduced because a traditional garden landscape observation device does not add a clamping part to quickly install a temperature and humidity sensor and needs to be manually fixed by using tools such as screws and nuts are solved. And the disassembly of the sensor for maintenance or replacement is more troublesome, so that the maintenance cost and time are increased.

This utility model relates to the technical field of counter-drone equipment, specifically to a high-power portable single-soldier counter-drone device. The key technical points include a main body, a support column fixed to the lower side of the main body, and a storage support structure for fixing the support column. The storage support structure includes a lower opening bracket, an upper opening bracket, a central shaft, and bearings. The lower and upper opening brackets are coaxially assembled via the central shaft, and the bearings are mounted on the central shaft to allow the upper opening bracket to rotate on the central shaft. A camouflage garment is fixed to the top of the upper opening bracket via ropes. This utility model, through its folding structure, facilitates user carrying and overcomes the problem of the main body of a high-power single-soldier counter-drone device being relatively heavy and large, making it difficult to conceal. The storage support structure saves space and creates a concealed space for easy hiding.

The utility model relates to the technical field of technical prevention doors, and discloses a technical prevention door with a noise reduction structure, which comprises a door frame, a bottom frame is fixed at the bottom end in the door frame, rotating blocks are movably arranged on one side in the door frame, hole bodies are arranged in the rotating blocks, second sealing noise reduction strips are fixed at one ends of first mucilage glue, and second sealing noise reduction strips are fixed at the other ends of the first mucilage glue. And first sealing silencing strips are fixed to one sides of the groove bodies correspondingly, mounting plates are mounted in the door leaves, and fingerprint door locks are fixed to one ends of the mounting plates correspondingly. The double-layer composite glass is provided with the first composite glass and the second composite glass, the double-layer composite glass has a good silencing effect, meanwhile, the silencing window film adheres to the surface of the first composite glass, the first sealing silencing strip is fixed between the door leaves, and the door handle is fixed to the outer side walls of the door leaves. The silencing effect of the technical prevention door is improved on the basis of the original composite glass, so that the technical prevention door has a good silencing effect.

The utility model discloses a hinge structure and a bluetooth earphone box, the bluetooth earphone box comprises the hinge structure, the hinge structure comprises a hinge shaft and a hinge arm rotatably connected with the hinge shaft, the hinge arm is provided with a hinge hole, the hinge shaft is sleeved in the hinge hole, the hinge shaft is provided with tooth sockets uniformly distributed around the central axis of the hinge shaft, and the tooth sockets are connected with the hinge shaft. An elastic buckle connected with the tooth groove in a clamped mode is arranged in the hinge hole, the elastic buckle is integrally formed in the hinge hole, and the tooth groove is integrally formed in the hinge shaft. The hinge structure and the Bluetooth earphone box provided by the utility model have the characteristics of simple structure, low cost, easy maintenance and good damping performance.

The utility model discloses a hollow sucker rod thermal washing check valve for an oil field, which comprises an upper joint, a lower working barrel and a thermal washing liquid nozzle, the thermal washing liquid nozzle is arranged above a partition table in the lower working barrel, and a thrust spring and a plunger are also arranged in an inner cavity above the partition table; the upper joint is connected with a lower working barrel provided with a thrust spring and a plunger; before hot washing liquid enters the hot washing check valve, the plunger seals the hot washing liquid nozzle. The utility model can be applied to a low-pressure and low-yield oil well, effectively improves the paraffin precipitation problem, and has the advantages of reasonable design, simple structure and no welding piece. The elastic force of the thrust spring and the plunger are used for blocking the hot washing liquid nozzle, and oil in an oil pipe is prevented from entering the hollow rod column in the well descending process of the device. The hot washing efficiency and the hot washing effect are effectively improved, the daily maintenance workload of oil well paraffin removal is reduced, paraffin precipitation and production accidents caused by paraffin precipitation are prevented, the production cost can be effectively reduced, and economic benefits are improved.

The utility model discloses a conductive clip up-down pressing track and coating device, which comprises an upper pressing track and a lower pressing track, the bottom surface of the upper pressing track is parallel to the top surface of the lower pressing track, a first guide groove is arranged at the bottom of the upper pressing track, and a second guide groove is arranged at the bottom of the lower pressing track. A second guide groove is formed in the position, corresponding to the first guide groove, of the top of the lower pressing rail, and a guide wheel of the conductive upper clamp moves in the first guide groove and the second guide groove and is used for limiting the moving direction and height of the conductive upper clamp. Through the first guide groove and the second guide groove, the upper position and the lower position of the guide wheel are limited, so that the height of the guide wheel can be controlled more stably, stable movement of the conductive upper clamp is ensured, stable opening and closing of the conductive clamp are ensured, the guide wheel jumps in an allowable range, clamping of a film to be coated is more stable, and the film coating efficiency is improved. The to-be-plated film is stably conveyed in the electroplating process, the electroplating effect is guaranteed, and the electroplating quality is guaranteed.

The invention discloses an aeroelastic conversion power chuck which comprises a main shaft, a piston gland is arranged on one side of the main shaft, a chuck clamp is arranged at one end of the piston gland, a line cavity is formed in the middle of the interior of the main shaft, and a piston rod is arranged in the line cavity in a sliding mode. One end of the piston rod penetrates through the piston gland and extends into the chuck clamp, the transmission cavity is formed in the chuck clamp, one end of the piston rod extends into the transmission cavity, and three first moving blocks which are annularly distributed at equal intervals are arranged in the transmission cavity; a second moving block is arranged on one side of each first moving block, and three first guide rods which are annularly distributed at equal intervals are welded to the outer side of the interior of the transmission cavity. According to the aeroelastic conversion power chuck, opening and closing of the clamping jaws are achieved through an aeroelastic conversion mechanism, so that a complex oil way system and a valve device are not needed, and the problems of medium residue and friction loss are effectively avoided.

The utility model belongs to the technical field of feedback furnace, concretely is feedback furnace, including furnace body, both sides fixed mounting of furnace body have first flange, the bottom fixed mounting of furnace body surface has support leg, the inner wall of furnace body is provided with connecting assembly, the top of furnace body surface is provided with ventilation mechanism, one end of furnace body is provided with sealing mechanism, the one end close to sealing mechanism of furnace body is provided with overhaul mechanism, through the setting of pouring material core seat, single furnace core, second flange, air supplement window and pyrolysis gas import, the design of single furnace core multistage type can be convenient replacement and maintenance to save replacement time and can promote work efficiency, and pouring material core seat can provide support for single furnace core to ensure that single furnace core can be used stably, and the cooperation of second flange, air supplement window and pyrolysis gas import can make the inside of furnace body can realize the ventilation function to the heat wave that can make single furnace core use time produces can be discharged smoothly.