37results about How to "Prevent rapid fall" patented technology

The invention discloses a transient active power control method for an energy storage power station, and belongs to the technical field of multi-infeed extra-high voltage AC / DC hybrid power grids, andthe control method comprises the steps: continuously detecting the real-time DC current of an inversion side and the AC bus voltage of the inversion side; when the real-time direct current is greaterthan a first current threshold value or the alternating current bus voltage is less than a voltage threshold value, controlling the energy storage power station to enter a transient control mode; determining an output time instruction corresponding to the energy storage active output by using the size relationship between the real-time direct current and a first current threshold value and a second current threshold value, wherein the first current threshold value is greater than the second current threshold value; determining by utilizing the size relationship between the alternating currentbus voltage and the voltage threshold value; and sending an energy storage active instruction of the target output amplitude to the energy storage power station at the target output moment accordingto the output time instruction and the output amplitude instruction. According to the control method provided by the invention, the energy storage active power output is applied to the field of commutation failure suppression, and the continuous commutation failure after the DC fault can be effectively suppressed.

The present invention relates to the technical field of fish flesh processing devices, particularly discloses a material refining device for fish flesh stuffing based on centrifugal force and aims tosolve a technical problem of crushing by fish flesh crushing machines. In order to solve the above technical problem, the present invention provides the material refining device for the fish flesh stuffing based on the centrifugal force. The material refining device for the fish flesh stuffing based on the centrifugal force comprises a seat table; the top part of the seat table is fixedly connected with a material refining box; an opening in the bottom part of the material refining box is inserted internally with a material discharging pipe; the top part of the material refining box is fixedlyconnected with an oscillating device; the bottom part of the oscillating device is provided with a centrifugal force material refining mechanism; the bottom part of the centrifugal force material refining mechanism sleeves inside the material refining box; and the surface of the material refining box is respectively movably connected with the both sides of the internal wall of the material refining box. The rotation of the centrifugal force material refining mechanism can drive a crushing ball and wing plates to rotate by centrifugal force in a gradually rising trend. When a horizontal direction is reached, the rising is stopped, so that fish flesh can be crushed thoroughly; and besides, the wing plates can prevent excessive fish flesh splashes.

The invention discloses a hydraulic device for preventing movable arm of a hydraulic excavator from falling accidently. The device comprises a valve plate, a cartridge valve component and a first pressure measuring unit, wherein the valve plate is arranged on a boom cylinder of the hydraulic excavator, a valve plate inner oil way is processed for the valve plate and comprises a first port and a second port, the first port is communicated with a system oil way of the excavator through a pipeline, the second port is communicated directly with a large cavity of the boom cylinder; the cartridge valve component is arranged on the valve plate, in a communicating connection with a control system of the excavator, communicated with the valve plate inner oil way arranged between the first port and the second port, and connects or disconnects the oil way between the first port and the second port; and the first pressure measuring unit is communicated with the first port and in a communicating connection with the control system of the excavator. According to the device, the cartridge valve component and the first pressure measuring unit are adopted, therefore the device can adapt to high-flow working condition, the cost of construction is low, secondary development is not needed, and the device is easy to maintain.

The invention discloses a hinge for a door body of a horizontal refrigerator, which comprises a hinge head and a hinge seat; a hinge shaft and a movable shaft are hinged on the hinge head; a support seat is arranged at the lower part of the hinge seat, and a support plate is movably inserted in the middle part of the support seat; There is a compression spring; a damper is arranged outside the arc channel on at least one side of the hinge seat; the damper includes a damper body, an arc guide rail, a damping chamber, a damping cylinder cover, a damping rod, a piston, a first chamber, and a second chamber chamber, damping spring, pressure plate, and damping end block; the first chamber and the second chamber are filled with non-Newtonian fluid, and the chamber between the pressure plate and the damping end block is filled with hydraulic oil. The structural setting of the hinge of the present invention, when the door is closed, the compression spring, the damping spring in the damper, and the non-Newtonian fluid in the first chamber form multiple damping, which can prevent the door from falling rapidly and reduce the impact on the cabinet. Body damage, but also reduce the noise.

The invention discloses a throwing egg for the environmental protection treatment of fire air particle pollutants, which comprises an impact bottom shell, a magnetic force adjustment mechanism is fixedly connected to the middle position of the bottom of the inner cavity of the impact bottom shell, and the top of the restriction plate is located outside the magnetic force adjustment mechanism for movement. A magnetic tensioning mechanism is connected, one end of the tensioning string away from the magnetic tensioning mechanism is fixedly connected with a bow-shaped elastic piece, an airbag is provided at the bottom of the inner cavity of the projected egg shell, and a suspension is slidably connected to the inner surface of the shielding plate. In the guiding mechanism, the inner cavity of the projecting egg shell is located in the middle position above the suspension guiding mechanism, and a dry ice storage egg is arranged, and the invention relates to the technical field of environmental protection. By condensing moisture in the air, attaching particulate pollutants to increase its own gravity and dripping, the surrounding temperature drops, avoid overheating and evaporation, make particulate cleaning more efficient and thorough, reduce the hazard of fire, and help protect the surrounding environment, requiring close contact , effectively protect the safety of personnel.

The invention discloses a horizontal refrigerator door hinge. The horizontal refrigerator door hinge comprises a hinge head and a hinge base. A hinge shaft and a movable shaft are hinged to the hingehead; a supporting seat is arranged at the lower part of the hinge base; a supporting plate is movably inserted into the middle part of the supporting seat; the supporting plate is sleeved with a compression spring; a damper is arranged outside an arc-shaped channel on at least one side of the hinge seat; the damper comprises a damper body, an arc-shaped guide rail, a damping cavity, a damping cylinder cover, a damping rod, a piston, a first cavity, a second cavity, a damping spring, a pressing disc, and a damping end block; the first cavity and the second cavity are filled with non-Newtonianfluid; and a cavity between the pressing disc and the damping end block is filled with hydraulic oil. By means of the structural arrangement of the horizontal refrigerator door hinge, when a door bodyis closed, multiple damping is formed through the arrangement of the compression spring, the damping spring in the damper and non-Newtonian fluid in the first cavity, so that the door body can be prevented from falling rapidly, damage to a cabinet body can be reduced, and meanwhile noise is lowered.

The invention discloses a hopper protection device for a bucket lifting mixing station, which belongs to the field of concrete mixing, and includes a frame and a hopper, and is characterized in that: the frame is provided with a first locking fixed block, a first locking movable block and a first Lock the cylinder, the first protective wire rope runs through the first positioning block and the second positioning block and is located between the first locking fixed block and the first locking movable block; the frame is provided with a second locking fixed block, a second Lock the movable block and the second locking cylinder, the second protective wire rope runs through the third positioning block and the fourth positioning block and is located between the second locking fixed block and the second locking movable block, and the first lower pulley is equipped with The first tensioner, the second tensioner is installed on the second lower pulley. The invention can effectively prevent the rapid fall of the hopper frame and the hopper after the lifting wire rope is broken, has a simple structure and is versatile, can be used for various types of hopper protection, and can effectively guarantee the safety of use.

An elevating pipe conveying vehicle has a front frame and a rear frame, and a lifting seat is arranged on the rear frame. The elevating pipe conveying vehicle has a hydraulic system for lifting and prohibiting walking. Directional valve, second hydraulic pump, power cut-off valve, gear selection operating valve, forward gear clutch, reverse gear clutch and lift cylinder, gear selection operating valve includes joystick, oil outlet of the first hydraulic pump and manual directional valve The oil inlet port P of the manual reversing valve is connected to the port A and port B of the manual reversing valve respectively connected to the rod cavity and the rodless cavity of the lift cylinder, and the rodless cavity of the lift cylinder is connected to the control port K of the power cut-off valve The oil inlet port P and the execution port A of the power cut-off valve are respectively connected with the oil outlet port of the second hydraulic pump and the oil inlet port P of the gear selection operation valve, and the execution port A, Port B is connected to the forward gear clutch and the reverse gear clutch respectively. When the lift pipe transport vehicle is in the lifting state of the compartment, the vehicle cannot be shifted forward, which can ensure the safe running of the pipe transport vehicle.

A kind of tea processing equipment according to the present invention comprises a machine body, a feeding hopper is fixedly installed on the upper end of the machine body, an installation cavity with an opening facing left is arranged in the body, a drying kettle is fixedly installed on the top wall of the installation cavity, The drying kettle is provided with a kettle cavity, and the bottom of the kettle cavity is provided with an outlet, and a sealing cover is hingedly installed on the right side of the outlet, and a vertical plate is installed symmetrically on the upper end of the sealing cover, and two vertical panels A first rotating shaft is rotatably installed between them, and a first stirring plate is fixedly installed on the first rotating shaft, and a first motor power-connected with the first rotating shaft is fixedly installed in the rear vertical plate. Scrapers are installed against the inner wall of the still cavity, and a second rotating shaft extending up and down is installed in rotation and fit on the top wall of the still cavity.

The invention discloses a lying-type-weight-lifting-barbell assisting device for fitness equipment. The lying-type-weight-lifting-barbell assisting device comprises a main hollow shell, and hydraulicoil storage space is formed in the center inside of the main hollow shell. The lying-type-weight-lifting-barbell assisting device is mainly used for assisting lying-type barbell weight lifting; in addition, on the premise that normal work and gravity of a barbell are not influenced, the phenomenon that the barbell rapidly falls can be effectively prevented, the event that due to lack of physical strength of an exerciser, a person is injured by falling of the barbell can be effectively prevented, and practicability is high; in addition, the device comprises a liquid one-way flowing speed control mechanism, one-way flowing of liquid can be effectively controlled, and the normal flowing speed of the liquid can also be effectively controlled; in addition, the device comprises a liquid middle flow-dividing connecting mechanism, and the effect of synchronizing working and supporting can be achieved; in addition, the device comprises a stretchable barbell end connecting supporting mechanism,the connecting and limiting effect on the barbell can be achieved while free vertical movement is achieved.

The invention discloses a transient active power control method of an energy storage power station, which belongs to the technical field of multi-feed UHV AC / DC hybrid power grids. The control method includes: continuously detecting the real-time DC current on the inverter side and the inverter side AC bus voltage; when the real-time DC current is greater than the first current threshold or the AC bus voltage is lower than the voltage threshold, control the energy storage power station to enter the transient control mode; use the real-time DC current and the first current threshold and the second current threshold between The size relationship determines the output time command corresponding to the active output of the energy storage. The first current threshold is greater than the second current threshold; it is determined by the size relationship between the AC bus voltage and the voltage threshold; The power station issues the energy storage active power command of the target output range. The control method provided by the present application applies the energy storage active output to the field of commutation failure suppression, and can effectively suppress continuous commutation failure after a DC fault.

The invention provides a hinge device which can be flattened and has a simple structure, and various machines provided with the same. The hinge device can prevent a manuscript pressing plate from rapidly falling down when the manuscript pressing plate is closed, and a user can obtain a smooth operation feeling. The hinge device includes: a mounting member attached to a machine body side; a support member attached to the manuscript pressing plate and composed of a fulcrum shaft portion and a support portion; a hinge shaft that rotatably connects the fulcrum shaft portion of the support member between a pair of side plates of the mounting member; a sliding member accommodated in an accommodating part in a sliding manner, wherein a sliding block cam convex part is arranged at the top of the sliding member; an elastic member arranged between the bottom of the accommodating part and the sliding member; a damper arranged in the elastic member; and a pressing rod which abuts against a first rotating cam part at a predetermined closing angle when the manuscript pressing plate performs a closing action, and is accommodated in a guide cylinder part in a sliding manner.

The invention relates to a resistance buffer device for rockfall prevention, which is characterized by comprising a flexible steel wire mesh enclosure, multiple steel ring fasteners, parachute cords, a drag parachute sleeve, steel stranded wires, steel wires, a drag parachute and expansion bolts, wherein two ends of the flexible steel wire mesh enclosure are connected with one ends of the steel stranded wires respectively; the multiple steel ring fasteners are arranged on the edge of the drag parachute and are connected with one ends of the parachute cords respectively; the other ends of the parachute cords are connected with the other ends of the corresponding steel stranded wires through the steel ring fasteners; the drag parachute is accommodated in the drag parachute sleeve; the top end of the drag parachute sleeve is connected with a steel wire rope with one fixed end; the flexible steel wire mesh enclosure is fixed at two ends of a dangerous rock through the expansion bolts. The resistance buffer device is reliably, conveniently and rapidly used for preventing rockfall from falling or rolling at a high speed and more powerfully provides safeguard for life and property security of people.

The invention discloses a high-rise elevator rope-breaking safety protection device and method. The device comprises an elevator lift car and an elevator shaft wall; the elevator lift car is disposedin the elevator shaft wall; and a braking protection device is disposed on the elevator lift car. When rope breaking occurs, an elevator steel wire rope loses pulling force on a fixing sleeve, under pushing of detection springs, the fixing sleeve moves downwards to drive a locking pull rod to be separated from a locking wheel, a locking effect on an advancing gear disappears, driving springs are contracted to generate a downward pulling force, an advancing rack moves downwards, a double protection measure is started in the process of downward movement of the advancing rack to perform braking and speed reduction of safety tongs on an elevator, then the speed is reduced the moment the elevator falls, a sliding block at the lower end drives a sliding rack to move downwards, then driving gearsare driven to rotate, driving rods connected with the driving gears rotate towards the outer side, push rods are driven to push braking stop rods, the braking stop rods can make contact with brakingtables, and therefore the elevator lift car is prevented from falling beyond one floor.