113results about How to "Closing speed is fast" patented technology

The invention discloses a hinge device which has the functions of door stop, automatic door closing, cushioning for door closing and the like. A cam piston, which divides the space in an upper shell into an upper independent compartment and a lower independent compartment, is arranged in the upper shell of the hinge device; and the cam piston moves up and down when the door sheet is opened and closed, thereby driving hydraulic oil in the upper compartment and the lower compartment to flow back and forth in the two compartments. When the door is automatically closed, the cam piston moves down,the hydraulic oil should flow into the upper compartment from the lower compartment via a cushion valve; the action of the resistance of the cushion valve has the cushioning effect on closing door, thereby avoiding overhigh closing speed, lightening the violent impact between a door sheet and a door frame while closing the door, reducing the noise while closing the door, and prolonging the service lives of the door sheet and the door frame. In addition, a hydraulic mechanism does not abrade a mechanical cushioning mechanism, thus the invention has the advantages of stable cushioning effect and long service life.

The invention relates to a composite contactor which belongs to the field of electric switches, in particular to a contactor suitable for powering on and off a power capacitor. In the invention, an input power supply is subjected to current limit by a capacitor voltage drop circuit and rectification by a rectifying circuit and used for supplying power to a control coil of the contactor; the capacitor voltage drop circuit is connected with a starting electronic switch in parallel, the control end of the starting electronic switch is connected to a control circuit, and the control circuit is connected with a working power supply; a voltage zero passage detection circuit and a controllable silicon circuit are connected to two ends of a mechanical contact of the contactor in parallel; and the output end of the voltage zero passage detection circuit and one on control end of the controllable silicon circuit are connected to the control circuit, while the other on control end of the controllable silicon circuit is connected to a contact bridge of the contactor. The control coil of the composite contactor adopts a capacitor voltage drop direct current working manner, and the controllable silicon circuit adopts a design with multiple control ends, so that the composite contactor has the advantages of environmental protection, energy saving, strong anti-jamming, power on work, power on with voltage zero passage, power off with current zero passage, short controllable silicon on time, high reliability and long operation service life.

The invention discloses a multifunctional automatic elastic compartment automobile which comprises an automobile body, an automobile frame and a compartment which is elastic, wherein the elastic compartment comprises an elastic compartment framework connected to the automobile frame, an elastic bottom frame connected to the bottom of the elastic compartment framework, an elastic top cover connected to the top of the elastic compartment framework, a compartment wall connected to the periphery of the elastic compartment framework as well as an elastic mechanism which is connected to the elastic compartment framework, the elastic bottom frame and the elastic top cover; the elastic bottom frame is internally provided with a bottom surface clearance closed device; the elastic top cover is internally provided with a top cover clearance closed device; the compartment wall is provided with a compartment door; an elastic power drive system and a covering mechanism component are placed in the elastic compartment; and the elastic mechanism and the elastic power drive system are connected. The multifunctional automatic elastic compartment automobile provided by the invention is compact in structure, is novel and reasonable in design, has good driving stability, has a large internal space after the compartment unfolds, and has rapid elastic speed of the compartment, high accuracy, high practicability, and high popularization and application value.

The invention discloses a spring operating mechanism buffer for a circuit breaker. The spring operating mechanism buffer comprises an inner cylinder body and an outer cylinder body which are in sleeved mounting in a clearance manner, wherein a clearance cavity is formed by an outer circumference face of the inner cylinder body and an inner circumference face of the outer cylinder body; a piston for driving hydraulic oil to flow between an inner cavity of the inner cylinder body and the clearance cavity is assembled in the inner cylinder body in a reciprocating motion manner; a through-flow hole for communicating the inner cavity of the inner cylinder body with the clearance cavity and capable of satisfying switch-off performance of the circuit breaker is formed in the inner cylinder body; an acceleration channel is arranged in the outer cylinder body; one end of the acceleration channel is communicated with the inner cavity of the inner cylinder body; the other end of the acceleration channel is communicated with the clearance cavity; and a check valve structure for controlling breakover of the acceleration channel in a switch-on process of the circuit breaker and cutoff of the acceleration channel in a switch-off process of the circuit breaker is arranged on the acceleration channel. The buffer can effectively solve the problem of low switch-on speed in a test process of the circuit breaker, does not influence technical parameters in the switch-off process of the circuit breaker, and improves reliability and stability of circuit breaker products.

The invention relates to an injection screw of an injection machine which has the functions of preventing a material from refluxing and stopping reverse and consists of a screw head, a check ring, a thrust ring and a screw body. The novel check ring with an inner flange and a clamping head, the screw head with a radial cutting groove and the thrust ring with a step surface realize excellent seal performance and eliminate the leakage problem caused by nonmelt grains, contaminations or other impurities by the slide closure between the inner flange of the check ring and the cylinder of the screw head as well as between the inner annular surface of the check ring and the step surface of the trust ring. In injection, the area of the larger end surface of the check ring ensures the realization of fast starting and shortens the closing time of the check ring. The fused masses are promoted to be further mixed when the radical cutting groove of the screw head is plasticized; in injection, the refluxing of the fused masses can be buffered; the leakage amount of the fussed massed can be reduced and the measuring precision is improved.

The invention discloses a light mechanical collision type space debris capturing web claw. The light mechanical collision type space debris capturing web claw comprises a bottom plate and a pluralityof web claw teeth, wherein the plurality of web claw teeth are mounted on the bottom plate; toothed claw switch module for driving the web claw teeth to be closed when the web claw teeth have collisions with a space debris is also mounted on the bottom plate; the web claw teeth consist of claw teeth with spokes on the two sides; and when the web claw teeth are closed, the plurality of web claw teeth and the spokes on the two sides of the plurality of web claw teeth form a semi-closed capturing envelope to prevent a capturing target from escaping. According to the light mechanical collision type space debris capturing web claw, at the moment of approaching the space debris in the capturing process, the capturing envelope is formed by triggering the switch through triggering a collision triggering switch of the bottom plate and releasing a torsion spring to drive the closed claw teeth; and therefore, the motion of a non-cooperative target is restricted and limited to finally realize thecapturing.

The invention provides a circuit breaker. The circuit breaker comprises a shell, a contact system, a transmission system, a tripping system, a driving motor and an operating handle, wherein the transmission system comprises a driving piece, a transmission piece, a rotating piece and a linkage piece; an elastic piece is arranged between the transmission piece and the shell; the stripping system comprises a stripping shaft; and a trigger part for pressing the tripping shaft is arranged on the transmission piece or the rotating piece. When a user is in arrearage, the driving motor drives the transmission piece to overcome the elastic force of the elastic piece to rotate to a set angle, the stripping shaft is pressed, and the contact system is switched off; after the user pays the fee, the driving motor continues to rotate, the stripping shaft is not pressed any longer, the transmission piece is detachably matched with the driving piece, the transmission piece turns round under the elastic force effect of the elastic piece, and the linkage piece is driven through the rotating piece, so that the contact system is switched on. Therefore, before the user continues to pay the electric charge, the user cannot get the electricity automatically due to the fact that the stripping system is at a trigger state and the operating handle can automatically reset to a switch-off position even if the operating handle is artificially pulled to be switched on.

The invention provides a fast on-off switch. The fast on-off switch comprises a bottom plate, a pin A, an air cylinder, a swing rod, a pin B, a cylinder barrel, a gear, a pin C, a cylindrical rod, a compression spring, a vertical plate, an L-shaped support and the like and is characterized in that the cylinder barrel is horizontally leftwards mounted on the bottom plate, the cylinder barrel is provided with a natural gas inlet and an air inlet in the upper portion, the right side of the cylinder barrel is sealed, the right end face of the cylinder barrel is provided with a circular hole, a spark plug is mounted in the circular hole, and an exhaust valve is arranged on the front side of the cylinder barrel. The fast on-off switch has the advantages that the rack can be pushed to move by the fast expansion of fuel gas by the aid of the air cylinder and the spark plug, the rack drives the gear and the L-shaped support to fast rotate clockwise, the off pressure between two copper contacts is large, and high off speed is achieved.

The invention relates to an emergent automatic gas cut-off solenoid valve. A control assembly is connected with the case of the valve body, an actuator is arranged in the case of the valve body, a valve plug is arranged in the actuator; a solenoid is arranged in the valve plug and a mandrel vertically runs through the actuator, the top of the mandrel is fixed with a hand-operated opening assembly by the thread; a hole for the control assembly indicator is arranged on the case of the valve body, the control assembly is controlled by the external signal and the power signal and outputs the On/Off signal of the valve and the signals are displayed by the control assembly indicator. The invention has the advantages that three valve cut-off modes can be provided, which are automatic cut-off in power outage, automatic cut-off by externally-controlled contact and manual cut-off; the valve cut-off speed is high, the gas supply can be cut off within one second; the valve can be cut off automatically by an electric mode aiming at the different kinds of detected emergent cases on gas safety, which includes but not limited to the power outage; the manual opening can keep the open state without dynamic power.

The invention discloses a vibration reducer and a switching device. The vibration reducer comprises a cylinder, a piston, a piston rod and a pressure relieving device, wherein one end of the piston rod penetrates through a first end cover, and extends into the cylinder to be fixed with the piston in the cylinder; a cavity of the cylinder is divided into a first cavity and a second cavity at the sides of the first end cover by the piston; the pressure relieving device is assembled on the cylinder, and a valve core rod part of a pressure relieving valve rod in the pressure relieving device extends into the first cavity; an extension rod is positioned in the pressure relieving valve core for adjusting a pressure relieving trigger travel; a first limiting mechanism is arranged between the extension rod and the pressure relieving valve core; and the pressure relieving device and the second cavity are communicated through a channel provided with an adjusting valve. The switching device comprises a single-pole switch; the single-pole switch is axially connected with the vibration reducer; when the switch is switched on, the damping is relieved at the tail section of the moving contact travel, so that the switching-on bounce of a moving contact of the switching device accelerated by the damping force is prevented, and the switching-on time is shortened; the damping releasing strength is adjusted; and the vibration reducer and the switching device are in synergistic effect to optimize the switching-on performance.

The invention discloses a rectangular anti-sliding pile mechanical and fast hole forming construction method. The method includes the following steps that 1, industry data are prepared; 2, a construction site is prepared; 3, ground leveling is performed; 4, staking out in survey is performed; 5, locking notch construction is performed; 6, hole drilling is performed, specifically, 6.1, a drilling machine is put in place, and 6.2, drilling construction is performed; 7, hole checking is performed after pile forming is finished; 8, making and lifting of a steel reinforcement cage are performed, specifically, 8.1, the steel reinforcement cage is made, and 8.2, the steel reinforcement cage is lifted; and 9, concrete pouring is performed. Drilling machine or manual hole digging construction is replaced by hole forming construction of a trenching machine; and through a trenching machine hole forming rectangular anti-sliding pile construction method, the requirements of shortening the construction period are met, the project cost is reduced, and the construction safety is guaranteed. A research group implements a trenching machine hole forming rectangular anti-sliding pile construction process, that is, a novel technology of combining the trenching machine and a long-arm breaking hammer for anti-sliding pile construction is adopted, and the novel technology has the advantages of being high in applicability, fast, efficient and safe in construction and the like.

The invention relates to a micro breaker having a rapid closing device and mainly solves a problem that difficulty in determining whether a breaker in the prior art breaks or not during use may mislead an operator to cause a safety accident. A handle comprises a toggle member and a lock member which are in common-pin sleeve connection, the lock member is provided with a clamp, the toggle member is provided with a notch for rotation motion of the clamp, a pin is sleeved by a limit torsion spring which drives the clamp to rotate anticlockwise, a casing is internally hinged with a clamping board, one end of the clamping board is in elastic matching with the casing through an elastic member, the other end of the clamping board is clamped with the clamp, one end of the clamping board corresponding to the handle is provided with an inclined plane, the inclined plane is in pressing matching with an outer contour of the handle, and disengaging or engagement of the clamping board and the clamp are realized in a rotation process of the handle. The micro breaker having the rapid closing device has advantages of fast closing speed, good safety and long service life.

The invention relates to the field of low-voltage electric appliances, in particular to an automatic change-over switch. When an energy storage operating mechanism is located at a second stable position, a driving disc rotates in the direction R1 under external force, and the driving disc 1 drives a left spring damping mechanism to enable the left spring damping mechanism to store energy through aconnecting rod mechanism; when the left spring damping mechanism swings to cross a first critical point, the left spring damping mechanism releases energy, and a left driving shaft assembly is drivento move in an accelerated mode, and a first power supply and a load are rapidly conducted, and the energy storage operation mechanism enters a first stable position; when the energy storage operatingmechanism is in a second stable position, a driving disc rotates in the direction R2 under external force, and the driving disc drives a right spring damping mechanism to enable the right spring damping mechanism to store energy through a connecting rod mechanism; when the right spring damping mechanism swings to cross a second critical point, the right spring damping mechanism releases energy,and a right driving shaft assembly is driven to move in an accelerated mode, and a second power supply and a load are rapidly conducted, and the energy storage operation mechanism enters a third stable position. Quick conduction of the switch can be realized, and the three-section operation of the switch can be achieved.

The invention discloses an automatic quasi-synchronization real-time power generator monitoring method and system. The system comprises a processing unit, a signal input and conversion circuit, an indication and control output circuit, and an interference-proof and power monitoring circuit, wherein the signal input and conversion circuit, the indication and control output circuit, and the interference-proof and power monitoring circuit are respectively connected with the processing unit; the signal input and conversion circuit is used for converting sinusoidal signals at both sides to be merged into digital signals; the processing unit performs calculation processing on the signals adopting a scientific method, thereby accurately determining a switch-on output moment; and the indication and control output circuit is used for sending the output signal to a power generator. The invention completely overcomes disadvantages of a simulation device; frequency difference and phase difference are calculated with high precision; and switch-on ahead time is determined with millisecond precision. Under the conditions that two-side pressure difference is qualified, frequency difference is qualified, and set leading time and breaker mechanical action time conform to each other, rapid shock-free switching on can be realized.

The invention relates to a sliding plug door driving device. The sliding plug door driving device comprises a driving mechanism and pulley link mechanisms, wherein the driving mechanism is arranged atthe middle position and can be used for providing driving force for the pulley link mechanisms which are symmetrically arranged at the left and right sides of the driving mechanism so as to implementsliding action; an action input end of each pulley link mechanism is connected with the driving mechanism; an action output end of each pulley link mechanism is connected with a left door leaf or a right door leaf; the pulley link mechanisms are correspondingly used for providing the same driving force for the left door leaf or the right door leaf which is connected with the corresponding pulleylink mechanism so that the left door leaf and the right door leaf can simultaneously move in the same direction or the opposite directions. According to the sliding plug door driving device provided by the invention, the driving mechanism is arranged at the middle position; the pulley link mechanisms are correspondingly symmetrically arranged at the two sides of the driving mechanism; moreover, the symmetrically-arranged mechanisms correspondingly act at the same time; and the sliding plug door driving device realizes precise motion in comparison with a way that one group of rod mechanisms areused for outputting power at different rod positions to implement corresponding driving.

The invention discloses a buffer device and a mechanical switch. The device comprises a cylinder, a piston, a piston rod and a pressure relieving device, wherein one end of the piston rod penetrates through a first end cover, and extends into the cylinder to be fixed with the piston in the cylinder; a cavity of the cylinder is divided into a first cavity and a second cavity at the sides of the first end cover by the piston; the pressure relieving device is assembled on the cylinder, and a valve core rod part of a pressure relieving valve rod in the pressure relieving device extends into the first cavity; an extension rod is positioned in the pressure relieving valve core for adjusting a pressure relieving trigger travel; and the pressure relieving device and the second cavity are communicated through a channel provided with an adjusting valve. The mechanical switch comprises a single-pole switch; the single-pole switch is axially connected with the buffer device; the buffer device relieves the damping force before switching on; the switching-on bounce of a moving contact is reduced; the damping releasing strength is adjusted; and the buffer device and the mechanical switch are in synergistic effect to optimize the switching-on performance. The pressure relieving device is arranged on the cylinder, and is convenient for installation, maintenance and adjustment of the pressure relieving trigger travel of the pressure relieving valve core.

The invention provides a clutch type transmission device with a simple structure, convenient use and a high switching-on speed and a circuit breaker by using the same. The transmission device comprises a spring shell and a driving shell, wherein the spring shell is connected with the driving shell, a movable shaft is arranged in the spring shell in a sliding and penetrating way in the length direction of the spring shell, a drive spring capable of compressing and return along with the sliding of the movable shaft is arranged between the movable shaft and the spring shell, the movable shaft comprises a first position used for storing elastic energy by compressing the drive spring to take as the power source of the switching-on operation of the circuit breaker, the movable shaft comprises asecond position used for releasing the elastic energy stored by the drive spring, the driving shell is internally provided with a driving piece used for driving the movable shaft to slide, and the driving piece is arranged with the movable shaft in a separating and combining mode.

The invention discloses a vibration damping device and switch equipment. The device comprises a cylinder, a piston, a piston rod and a pressure relief device. One end of the piston rod penetrates a first end cover and stretches into the cylinder, and the piston rod and the piston in the cylinder are fixed. An inner chamber of the cylinder is divided by the piston into a first chamber and a second chamber which are located on the side of the first end cover. The pressure relief device is assembled on the cylinder. A valve element rod of a pressure relief valve element arranged in the pressure relief device extends into the first chamber. A telescopic rod is arranged in the pressure relief valve element and used for adjusting the pressure relief trigger stroke. A first limiting mechanism for preventing the telescopic rod and the pressure relief valve element from relatively rotating is arranged between the telescopic rod and the pressure relief valve element. The switch equipment comprises a single-pole switch axially connected with the above vibration damping device. In the switch-on process of the switch, damping is relieved through the vibration damping device at the stroke tail segment of a movable contact, the situation that damping force promotes switch-on bouncing of the movable contact is avoided, and the switch-on performance is improved. The pressure relief device is arranged on the cylinder, and mounting, adjusting, maintaining and adjusting of the pressure relief trigger stroke are facilitated.

The invention relates to an opening control method for a high-voltage direct-current circuit breaker. The opening control method comprises the steps of switching on a cut-off branch and switching off a through-flow branch when a fault current is detected; determining whether an opening instruction from a control protection system is received or not; if the opening instruction is received, switching off the cut-off branch to complete opening of the direct-current circuit breaker; and if the opening instruction is not received by the direct-current circuit breaker, re-switching-on the through-flow branch and switching off the cut-off branch to prohibit opening of the direct-current circuit breaker. According to the method, the opening operation of the direct-current circuit breaker is performed in two steps; the opening process or the re-opening operation is completed according to whether the opening instruction from the control protection system is received or not; and therefore, the opening precision is ensured while the opening speed of the direct-current circuit breaker is remarkably improved.

The invention provides a small peptide for promoting wound healing and application thereof, and belongs to the technical field of biology. The amino acid sequence of the small peptide for promoting wound healing is shown as SEQ ID NO: 1. The invention provides application of the small peptide in preparation of medicines for treating traumatic skin injury, and an application in preparation of beautifying skin-nourishing products. The invention also provides the medicines for treating traumatic skin injury, and the beautifying skin-nourishing products, which contain the small peptide for promoting wound healing. The small peptide provided by the invention can significantly promote wound healing.

The invention relates to a high-speed electromagnetic mechanism long in service life and relates to the technical field of electromagnetic mechanisms. The high-speed electromagnetic mechanism is characterized in that a lower shell and an upper shell are fixedly connected, a damping pad is mounted at the bottom of the lower shell, a static iron core is mounted on the damping pad, and the static iron core is fixed on the lower shell through a static iron core fixing pressing plate; a maintaining electromagnet shell sleeves and is fixed on the lower shell, a maintaining electromagnet coil is nested into the maintaining electromagnet shell, a maintaining electromagnet movement mandrel is nested into the maintaining electromagnet coil, one end of a maintaining electromagnet reset spring attaches to the maintaining electromagnet coil movement mandrel, and the other end of the maintaining electromagnet reset spring attaches to the maintaining electromagnet coil; a self-locking mechanism shell sleeves and is fixed on the static iron core, a slide connecting rod is hinged and slidably fixed in the self-locking mechanism shell, a self-locking movable pull rod is fixedly hinged in the self-locking mechanism shell, and a reset stretching spring is mounted below the self-locking movable pull rod. By the high-speed electromagnetic mechanism, the problems that an existing electromagnetic mechanism is high in energy consumption, slow in closing and separating of an upper iron core and a lower iron core, easy in burning of upper and lower contacts, and easy is arc discharge of the upper and lower contacts are solved.

The present invention discloses a vibration damping device and a disconnector. The device comprises a cylinder, a piston, a piston rod and a pressure relief device. The cylinder comprises a first end cover, a cylindrical barrel and a second end cover. One end of the piston rod passes through the first end and stretches into the inside of the cylinder to be fixed with the piston within the cylinder. The piston divides the cylinder into a first chamber and a second chamber on the first end cover side. The pressure relief device is assembled on the cylinder. A valve plug rod of a built-in pressure relief valve plug extends to the first chamber. A telescopic rod is disposed inside the pressure relief valve plug. The pressure relief device is provided with an adjusting channel suitable for adjusting the stretching length of the telescopic rod. The disconnector comprises a single pole switch that is connected with the above-mentioned vibration damping device in an axial direction. When the switch is closed, in the last stage of the moving contact travel, the vibration damping device relieves damping to avoid that the damping force facilitates the moving contact of the disconnector to close and bounce, thereby shortening the closing time. The pressure relief device is disposed on the cylinder of the vibration damping device, which is convenient for installing, maintaining and replacing the pressure relief valve plug.

The invention provides an insect trapper which comprises a pipe body and a screen, wherein a strip-shaped notch along the length direction is formed in the wall of the pipe body; a traction block is inserted into the pipe body; an extension notch and a shifting rod which can move along the notch are arranged on the traction block; the head end of the pipe body is inserted into a connecting plate; a wire through hole is formed in the connecting plate; the wire through hole is communicated with an inner cavity of the pipe body; the screen consists of a gauze element and two flexible battens; the head ends of the two flexible battens are connected by a nylon piece; rubber pieces are respectively adhered to the tail ends of the two flexible battens; the tail ends of the rubber pieces are symmetrically arranged on two sides of the connecting plate and are hinged with the connecting plate; rubber strips are fixed at the upper ends of the head ends of the rubber pieces; one end of a digging rope penetrates through the wire through hole and is connected with the middle of the nylon piece, and the other end of the digging rope is connected with the traction block; the length of the notch is enough to enable an opening in the upper end of the screen to be opened and closed when the digging rope is positioned in a stretching or retracting state. The insect trapper is a manual insect trapper, is safe, free in opening and closing, high in closing speed and tight in closing, and has the environment-friendly effect, and the insect trapping rate is effectively improved.