32results about How to "Realize secondary protection" patented technology

The invention discloses a boarding bridge cable with strong weather resistance. The boarding bridge cable comprises a fixing pipe, a positioning pipe and a cable. and the through hole of the positioning pipe is filled with the anti-freezing solution, so that the cable between the fixing pipe and the positioning pipe can be effectively protected at low temperature. Meanwhile, a guide pipe is arranged between the positioning pipe at the periphery of the cable and the fixing pipe, and a pressing plate is arranged in the guide pipe and is connected with the fixing pipe through a guide rod and a fixed block arranged on a spring, so that the pressing plate can effectively limit the position of the cable in the guide cover, when the cable deviates and twists under the action of external force, the restoring force relative to the cable can be effectively obtained to cope with the twisting installation requirements of the cable in various installation environments, and accordingly different degrees of installation and fixing effects of the cable in a low-temperature environment can be effectively improved during the actual application, the actual service life of the cable is further prolonged, and the defects in the prior art are overcome.

The invention relates to the technical field of heat-resistant protection of high-temperature structural parts, in particular to a structural design and forming manufacturing method of a thermal protection composite coating. The thermal protection composite coating is composed of a plurality of coating layers formed by alternately arranging ceramic heat-resistant layers and graphene heat-conducting layers, and the thickness is d. The first ceramic heat-resistant layer (1) is composed of ceramic powder and a binding phase, and the second ceramic heat-resistant layer (2) is composed of graphene heat-conducting layers. The middle graphene heat-conducting layer (3) is composed of graphene nanoparticles, ceramic powder and a binding phase, and the second ceramic heat-resisting layer (2) is composed of ceramic powder, ceramic short fibers and a binding phase; each coating layer is prepared through brazing, spraying and heat treatment. According to the three-layer structural form of the heat-resistant layer, the heat-conducting layer and the heat-resistant layer, the problem that the heat resistance of a thermal protection coating material is reduced due to local high-temperature aggregation in the actual application process is effectively solved, so that the stability and the reliability of a high-temperature application structure are effectively improved.

The invention discloses a preparation method of a microneedle array biosensor. The preparation method of the microneedle array biosensor comprises the following steps: making a conductive microneedlearray with rough surface; modifying a biological recognition molecule on the rough surface of the microneedle array; adding a degradable macromolecular material on the surface, on which the biologicalrecognition molecule is modified, of the microneedle array. The microneedle array in the microneedle array biosensor has the rough surface, so that protection of the biological recognition molecule modified on the surface of the microneedle array in the puncture process is benefited; furthermore, the degradable micromolecular material added on the outer layer of the microneedle array can realizesecondary protection of the biological recognition molecule.

The invention discloses a novel energy electric automobile charging pile for a city. The novel energy electric automobile charging pile comprises a display screen, a charging gun, a connecting line, apile body and a base, wherein the display screen is arranged on the top of the pile body; the pile body is fixedly connected with the display screen; the charging gun is movably connected with the pile body; the base is arranged at the bottom of the pile body; the base is fixedly connected with the pile body; and the pile body and the charging gun are connected through the connecting line. The novel energy electric automobile charging pile has the beneficial effects that rainwater is utilized to fill an air bag and expand the air bag to generate compression force to drive an air bag supporting plate to move downwards, so that a shaped rod pushes a connecting block to move downwards, the purpose of separating the pile body, the base and water on the ground is achieved, the primary protection of the charging pile is realized; when the air bag is ruptured, the rainwater enters a standby cavity, and a hollow layer is utilized to maximize the buoyancy of a circular plate in the rainwater,so that a top plate is pushed upwards to jack up, a standby interlayer is pushed to open, the pile body is separated from the base, and the secondary protection of the charging pile is realized.

The invention discloses an environmental noise detection device comprising a noise detector. A protection plate is movably mounted on one surface, provided with a display screen, of the noise detector; two symmetrical spring grooves are formed in the middle of the protection plate; a sliding plate is slidably clamped in each spring groove; pull rods are fixedly arranged on the side walls of the sliding plates; the other end of each pull rod slidably penetrates through one spring groove; the outer wall of each pull rod in the spring groove is movably sleeved with a spring; two ends of the springs are fixedly connected with the side walls of the sliding plates and the inner walls of the spring grooves; a holding block is fixedly connected to the tail of one end, outside each spring groove, of each pull rod; a stop rod is fixedly arranged on the face, facing the noise detector, of each holding block, the stop rods are movably connected with stop holes in the outer wall of the noise detector in a clamped mode. The protection plate is used for protecting the display screen of the noise detector to avoid a phenomenon that in the noise detection process, dirt such as dust adheres to the display screen, and data reading of workers is affected.

The invention provides an islanding protection method based on a low-voltage distributed photovoltaic access management and control system, and the method comprises the steps: taking a voltage frequency swing range delta f and a voltage amplitude swing range delta U within a set time T as the determination of an islanding protection mode, and if the absolute value of the voltage frequency swing range is greater than or equal to 0.2 Hz or the absolute value of the voltage amplitude swing range is greater than or equal to 20V, starting the islanding protection mode; if yes, the passive island detection criterion is established, the low-voltage intelligent circuit breaker judges that the island effect occurs, and the grid-connected point is cut off immediately and reported to the intelligent gateway; if the absolute value of the voltage frequency swing range is smaller than 0.2 Hz, active island detection is started, and disturbance is injected to the output current of the inverter. On the premise of considering electricity utilization safety and electric energy quality, secondary protection for preventing the islanding effect is effectively achieved, and it is ensured that a power grid is safer and more reliable.

The invention discloses a protection device for several flying objects in blasting. The protection device comprises a plurality of first frames, second frames, first protection nets and second protection nets. The multiple first frames are arranged on the side face of a vertical column, and the first protection nets are wound around the outer sides of the first frames in one or more layers. The second protection nets are arranged in the second frames. The second frames and the first frames are the same in number. The second frames are fixedly connected with the first frames through fasteners,and the fasteners penetrate through meshes of the first protection nets. The adjacent second frames are connected through connecting pieces. Gaps are reserved between the first protection nets and thesecond protection nets. According to the protection device, the gaps are reserved between the first protection nets and the second protection nets, so that the mechanical property of the first protection nets is given to full play, secondary protection is achieved, and safety is guaranteed; the parts, on the four first frames, of the first protection nets are all in a tensioned state due to fixing of the fasteners, and the four side faces are not affected with one another; and even if a certain side face is partially damaged, the mechanical property of the rest part of the side face is not affected.

The invention relates to a safety control method of a juicer. The method comprises the following steps: 1, detaching a juicer main machine from a juicing cup; different from the prior art, the methodcomprises the following steps: after the juicer is standby for a period of time each time, enabling the juicer to enter a safety protection locking state; then, separating the juicer main machine fromthe juicing cup, and then re-assembly the juicer main machine and the juicing cup together, so the safety switch is enabled to switch the on-off state for one time; if the safety switch cannot perform state switching: if so, the control circuit board on the juicer judges that the safety switch fails or is damaged or fails, and the juicer will be automatically locked, and cannot be started. Therefore, according to the method, the event that a user or a child is cut by mistakenly pressing the starting switch and starting the juicer main machine under the conditions that the juicer main machineis not provided with the juicing cup and the safety switch is invalid and is in a closed state is effectively avoided, so the user or the child is prevented from being cut by a juicing knife of the juicer.

The invention discloses a battery protection board assembly, a battery assembly and a mobile terminal. The battery protection board assembly comprises a battery protection board for protecting charging and discharging of a battery, and an over-current protection component arranged between the battery protection board and a first electric conductor. Through the battery protection board assembly, the space resources of the protection board can be prevented from being occupied while secondary protection for the battery is realized, so that the battery is more flexible in design and higher in selectivity.

The invention relates to the technical field of data import, and discloses a production process data import method and device. Comprising a data import system composed of a source data module, a data stream, a data log module used for recording data, a data transfer module used for transferring the data, a data configuration module, a data storage module used for storing the data, a data analysis module used for analyzing the data and a mobile terminal used for displaying the production data. The data flow and data transfer module is connected with the data exchange module, the data exchange module is connected with the data loading module, and the data loading module is connected with the data storage module through the Internet. Therefore, workers can import the data of the production process conveniently, data management is more convenient, and the working efficiency of the workers is improved.

The invention discloses an ecological water conservancy slope protection device based on a water conservancy project. The ecological water conservancy slope protection device comprises a slope protection base plate, fixing holes, anti-scouring devices, connecting lugs, a green plant planting device, a first buckle plate device and a second buckle plate device; the fixing holes are formed in the surface of the slope protection base plate and are close to the edge position; the anti-scouring devices are arranged in the slope protection base plate and located at the positions of the fixing holes; the connecting lugs are fixed to the two corresponding sides of the surface of the slope protection base plate and located at the edge position; the green plant planting device is arranged on the surface of the slope protection base plate and is close to the center position; the first buckle plate device is arranged at one end of the slope protection base plate; and the second buckle plate device is arranged at the end, away from the first buckle plate device, of the slope protection base plate. The invention relates to the technical field of water conservancy projects. The ecological water conservancy slope protection device based on the water conservancy project achieves the purpose of multiple protection, fixing is convenient and firm, rainwater scouring is reduced, secondary protection can be conducted, the ecological water conservancy slope protection device is not likely to be destroyed due to impact, the service life is prolonged, and the using performance is improved.

The invention discloses a protection system based on independent protection performance of a bridge pier, and provides a protection system capable of performing independent anti-collision induction and anti-collision protection on a guardrail and a chain of a bridge. Herein, a damping induction block is mounted on the guardrail, so that the guardrail can be buffered and protected in time when the guardrail is collided, the collision strength can be monitored in time, and the effects that the guardrail can be automatically protected and secondary protection can be triggered according to the collision strength are achieved. Movable damping blocks are mounted at the bottom of the guardrail, so that the limitation of the movable damping blocks can be removed in time to realize secondary damping when the guardrail is collided with a large force, and the comprehensive damping protection effect on the guardrail and a collided object is achieved. A movable protective lock chain is connected in the guardrails, so that when the lock chain is collided by certain force, a part of movement space of the lock chain can be recovered for buffering protection.

The invention provides a network information security protection device and a use method thereof, and relates to the technical field of protection devices. An embodiment of the invention provides the network information security protection device which comprises a box body and a protection shell arranged in the box body in a sliding mode, wherein a plurality of shock absorbers are installed at the bottom in the protection shell, the top parts of the shock absorbers are connected with a bottom plate, an elastic locking mechanism is installed at the top part of the protection shell, and a top plate connected with the elastic locking mechanism is arranged at the top in the protection shell. By means of the double-layer design of the box body and the protection shell, powerful protection of a computer is achieved, meanwhile, the computer is fixed in the protective shell through clamping of the top plate and the bottom plate, the situation that the computer is separated from a placement position and is collided and damaged is avoided, the practical value is greatly improved, and large-scale application and popularization are facilitated.

The invention provides a clothes dryer box structure and a clothes dryer. The clothes dryer box structure comprises a microwave cavity and a shell, wherein a microwave working field is formed in the microwave cavity; the microwave cavity is formed in the shell, the shell is provided with a shielding wall used for reflecting and/or absorbing microwaves, and the shielding wall is used for shieldingthe microwaves leaked from the microwave cavity in the shell. According to the technical scheme, secondary protection of the microwaves is achieved, the microwaves are not leaked to the external environment easily, thereby not easily causing harm to the body of a user, and improving the safety.

The invention discloses a multi-protection cable. The multi-protection cable comprises an outer protective layer, a mounting cavity is formed in the outer protective layer; more than one strand of cable core wire is mounted in the mounting cavity; more than one strand of cable core wire is wrapped with an inner protective layer; more than one through groove is formed in the outer protective layer;each through groove extends towards the length direction of the outer protective layer; more than one through groove is formed around the round outer protection layer for a circle, the through grooves are formed at intervals in the axial direction and the radial direction, a movable protection part is arranged outside each through groove, more than one elastic band is fixedly arranged at the bottom of each movable protection part, and the elastic bands are all in a stretching shape. The cable provided by the invention has very high protection performance, can automatically close the outer protection layer after being damaged by shearing, and has an internal secondary automatic protection function, so that the use safety of the cable is greatly improved.

The invention provides a microneedle type multifunctional slimming and fat dissolving filling instrument, relates to the technical field of beauty instruments, and solves the problems that a plug head and a beauty instrument are easy to loosen, and the plug head cannot be automatically prevented from loosening in the process of beautifying by pressing a button; and finally, the problem that the existing device cannot realize the organic combination of the protection structure and the pressing of the beauty button through the structural improvement is solved. A microneedle type multifunctional slimming and fat dissolving filling instrument comprises a gun body. The gun body is of a beautifying gun structure. The number of the auxiliary rods B is two, and the two auxiliary rods B are symmetrically welded to the seat body. The two auxiliary rods B are both of an L-shaped rod structure, and the two auxiliary rods B jointly form a hanging structure of the gun body. The two auxiliary rods B are in elastic contact with the plug, and when the auxiliary rod A is repeatedly pressed, the auxiliary rods B and the plug are in a continuous impact shape, so that the plug is prevented from loosening.

The invention discloses a double-control lock, which includes a lock body, a lock core and an unlocking key. The lock core is placed in the lock body and serves as a first locking mechanism, and also includes a second locking mechanism. The second locking mechanism includes a motor, The elastic part, the rotor and the bolt made of conductive hard metal material, the bolt is connected with the lock cylinder under the action of the elastic part, and the outer wall of the lock cylinder is provided with a socket for rotating with the bolt, and the other side of the bolt is opposite to the socket. One end is provided with an external thread, the rotor is sleeved on the rotating shaft of the motor and engaged with the external thread, and the motor is connected with an optical fiber identifier for disengaging the plug from the socket.