44results about How to "Cause danger" patented technology

The invention discloses a nano fiber and glass fiber composite filter material and a preparation method thereof. The nano fiber and glass fiber composite filter material comprises a glass fiber filtrate and nano fibers boned onto the surface of the glass fiber filtrate, wherein the average aperture of the glass fiber filtrate is less than or equal to 20 mum; and the average diameter of the nano fibers is less than and equal to 0.05 mum. At the same time, the invention also discloses a preparation method of the nano fiber and glass fiber composite filter material comprises: 1, driving the glass fiber filtrate by using a draw gear to pass through an electric field generated between a centrifugal pan and a collector electrode; 2, pumping solution of a polymer into the centrifugal pan to generate nano fibers in the electric field under the action of the centrifugal pan rotating at a high speed, and driving the nano fibers toward the collector electrode and allowing the nano fibers to deposit on the surface of the glass fiber filtrate; and 3, drying the glass fiber filtrate the surface of which is boned with the nano fibers. In the invention, under a condition of constant resistance, the filtration efficiency of the glass fiber filtrate is improved, and the glass fiber filtrate allows for easy ash removal.

The invention discloses a multi-robot teaching and real training platform, which comprises a real training table, a logic control unit, and the following elements mounted on the real training table: a material loading unit, a sorting unit and a transporting unit. The material loading unit, the sorting unit and the transporting unit are arranged in succession; the logic control unit is mounted in the real training table and is connected respectively with the material loading unit, the sorting unit and the transporting unit. The material loading unit, the sorting unit and the transporting unit of an assembly line type mounted on the real training table complete the material loading, detecting and sorting as well as transporting to a designated place. In addition, for the logic control unit mounted inside the real training table and through the acquisition of the feedback information from the material loading photo-electric sensor, the machine visual device and the material transmission photo-electric sensor, it is possible to control and coordinate the material loading unit, the sorting unit and the transporting unit to cooperate and work. The platform is simple in structure, small in size and light in weight, making it very suitable for teaching demonstration and real training.

The invention discloses a water rescue unmanned aerial vehicle (UAV) provided with a net body, and an operating method of the water rescue UAV. A UAV body is internally provided with an objective table by means of a first telescopic part; by means of the expansion and contraction of the first telescopic part, at least part of the bottom of the objective table extends out of the UAV body; the bottom of the objective table is hinged with four main telescopic supporting rods, and a supporting telescopic rod used for controlling the main telescopic supporting rods is arranged on the main telescopic supporting rods and at the bottom of the objective table; the lower parts of the four main telescopic supporting rods are provided with the net body provided with contraction holes in the middle part, and a tightening band is arranged at the position of the shrinkage holes of the net body; when the tightening band is shortened, the shrinkage holes at the middle part of the net body is shrunk; the bottom surface of the net body is provided with a floating air bag. The invention aims at providing the water rescue UAV provided with the net body and the operating method of the water rescue UAV,thus realizing rescue of people trapped on water; furthermore, the water rescue UAV does not cause danger to rescuers and is mainly used for rescuing people with self action ability.

A heat exchanger includes at least an electronic resistance heating element (2), particularly positive temperature coefficient-element (PTC) (3), at least two linked conductors (4) having at least a resistance heating element (2) for conduction, particularly to circuit boards (6, 7) transmitting current to pass over at least one resistance heating element (2) to heat the resistance heating element (2); at least a heat transfer element (11) for transferring heat on at least one resistance heating element (2) to a heated fluid; at least electric isolator (22) isolating at least one heat transfer element (11) from at least two conductors (4). Therefore, it is no danger to environment particularly people under the current of a voltage above 50V. Two conductors (4) and/or at least a resistance heating element (2) are arranged in a hollow space (19) that is defined by a hollow space wall (17). An electronic insulator (22) is a sealing compound (23) which partially fills the hollow space (19). The conductors and/or at least a resistance heating element are isolated electrically by the hollow space wall (17) in a partial manner.

The invention relates to the technical field of communication and provides an optical fiber on/off rapid detection device comprising a body; the upper end of the body is provided with a threaded tube;a laser transmitter is arranged on a center line in the threaded tube; the threaded tube is connected with a protection cover via threads; the center portion of the inner top surface of the protection cover is provided with a laser receiver; the lower end of the body is provided with a holding rod; the surface of the body is provided with a laser transmitting button and a display screen; the holding rod is inside provided with a storage battery; the body is inside provided with a micro-chip; the laser receiver is in communication connection with the micro-chip via a laser receiving circuit and an analog quantity input module; the display screen is in communication connection with the micro-chip; the threaded tube is provided with a main fixing ring which is connected with an auxiliary fixing ring via a connecting rope; the auxiliary fixing ring sleeves the protection cover and a laser transmitting protection tube. The optical fiber on/off rapid detection device achieves rapid opticalfiber detection, is reasonable in structural design and convenient to operate and has a laser transmitting protection function.

The invention discloses a grounding grid, and belongs to the technical field of electrical application. The grounding grid comprises a backbone network, and at least one group of grounding electrodes. Each group of electrodes comprises at least one grounding electrode. At least one group of grounding electrodes are connected with different positions of the backbone network respectively under the backbone network. The backbone network is positioned under the buildings, and is insulated from the peripheral soils. The grounding grid discharges through the grounding electrodes. The backbone network is provided with at least one connection point, which is used for the connection with the electrical equipment. Each electrode of at least one group of electrodes is positioned in the grounding well. Through the placement of at least one group of electrodes under the backbone network, and through the placement of each electrode of at least one group of electrodes in the grounding well, and through the insulation of the backbone network from the peripheral soils, the grounding grid can only discharge through the grounding electrodes in the grounding well, which means the discharging happens in the deep underground, thus avoiding the creation of step voltage on the ground, bringing no hazards to the pedestrians, and enhancing the safety of the grounding grid.

The invention discloses an electric scooter. The electric scooter comprises a unicycle, a pull rod detachably connected with the unicycle, a sliding plate assembly connected with the pull rod and a screw used for connecting the pull rod with the unicycle; the pull rod comprises a pair of telescopic rods, a pull rod handle connected to the upper ends of the telescopic rods and a connecting rod connected to the middles of the telescopic rods; a pull rod groove containing the telescopic rods and the connecting rod of the pull rod is formed in the upper portion of the unicycle, a pressure sensor is fixedly connected to the center position of the upper end of the pull rod groove, the upper end of the pressure sensor abuts against the connecting rod, and the pressure sensor is electrically connected with a controller of the unicycle. The unicycle can be used separately and can be matched with the sliding plate assembly to serve as the electric scooter for use.

The invention discloses teaching equipment with high safety for experiments. The teaching equipment comprises a support frame, a bottom plate and a protection frame, wherein two sides of the top of the inner wall of the support frame are fixedly connected with fixing blocks; the bottom of each of the two fixing blocks penetrates through the protection frame and extends to the inside of the protection frame; the teaching equipment relates to the technical field of teaching facilities. The teaching equipment with high safety for experiments has the advantages that grooves matched with moving rods are formed in one side, deviated from the two fixing blocks; the danger caused by test tube fracture is prevented; the risk is reduced; the experiment safety is improved; position limiting holes areformed in the top of the fixing plate; one end of each of two second springs is fixedly connected with a first connecting plate; an installing groove is formed inside the protection frame; two sidesof the bottom of the inner wall of the installing groove are fixedly connected with third springs, so that a buffer effect can be achieved on test tubes; the fracture caused by collision between the test tube wall and the fixing plate is prevented; the protection frame can be dismounted; the cleaning is convenient.

The invention discloses an intelligent pencil sharpener with a good dust removal effect. The intelligent pencil sharpener with the good dust removal effect comprises a main body box, a driving mechanism, a dust removal mechanism, a clamping mechanism, a shell, a base cover, a driving cylinder and anti-skid pads, the driving mechanism is arranged inside the main body box, the dust removal mechanism is arranged on the main body box, the upper end of the main body box is connected with the shell through threads, the clamping mechanism is arranged inside the shell, the lower end of the main body box is connected with the base cover through threads, the driving cylinder is fixedly connected into the main body box, the lower end of the base cover is fixedly connected with four anti-skid pads, and the four anti-skid pads are evenly distributed on the base cover. The invention relates to the intelligent pencil sharpener with the good dust removal effect, the intelligent pencil sharpener has the characteristics that dust generated during pencil sharpening can be collected, and danger to students in the pencil feeding process can be prevented.

The invention relates to multifunctional unreeling equipment which comprises a motor, a coiling block and a descent control device. The motor is directly connected with the coiling block or is connected with the coiling block through a transmission mechanism to drive the coiling block to rotate, a coiling block shaft of the above coiling block is connected with a rotating ring, the rotating ring can rotate in one direction and can be locked to be unable to rotate in the other direction, the descent control device is arranged on the rotating ring, a slow descent rope extending out of the descent control device is reeled on the coiling block and extends out from the coiling block so as to be directly connected with a heavy object or penetrate a line groove of a turning sliding wheel to be connected with the heavy object, the structure of the heavy object adopts a rubber ball or a fixed pulley or a movable pulley, a cable connected with the motor extends downwards to the lower portion orthe exterior of the building to be connected with a power source through electrical apparatus element capable of connecting or disconnecting the power source.

The invention provides a ladder having an illuminating function, and relates to a ladder. The ladder is characterized in that a solar panel and an LED base plate are arranged on a footboard of the top layer of a ladder body, LED base plates are additionally arranged on other cross bars of the ladder body, and an integrated storage battery is arranged at the lower part of the cross bar at the bottom layer of the ladder body, a switch is arranged on the ladder body, the solar panel, the LED base plates, the integrated storage battery and the switch are connected to form a loop by lead wires; the integrated storage battery comprises an integrated circuit board and a storage battery; and the upper layer of each LED base plate is provided with a rigid transparent panel. The ladder has the characteristics of novel structure and high safety and reliability, can be used simply and conveniently, and has the energy-saving and environment-friendly effects, and therefore, the ladder having the illuminating function has the economical efficiency and the practicability.

The invention provides a building with multifunctional rope releasing equipment. The building with the multifunctional rope releasing equipment comprises the multifunctional rope releasing equipment arranged above the building. The multifunctional rope releasing equipment comprises a motor, a winding drum or a rotating shaft and a slow descending device. The motor is connected with the winding drum or the rotating shaft. A winding drum shaft of the winding drum or the rotating shaft is connected with a rotating ring body. The slow descending device is arranged on the rotating ring body. A slowdescending rope extending out of the slow descending device is wound around the winding drum or the rotating shaft and extends out of the winding drum or the rotating shaft to be directly connected with a weight or connected with the weight after penetrating a line channel of a turning pulley. The structure of the weight comprises a rubber ball or a fixed pulley or a moving pulley. A cable connected with the motor is connected with a power source through an electrical element capable of connecting or disconnecting the power source at the position above the building with the multifunctional rope releasing equipment.

The invention provides a cleaning robot with a fan brake device, which is mainly characterized in that at least one brake device is arranged in an accommodating groove of a cleaning machine body for accommodating a dust collecting box and a fan, and the brake device is a concave part which is positioned at the bottom of the dust collecting box and is used for embedding the fan and is positioned below a junction position of the bottom of the dust collecting box; when the dust collection box is taken down, the soft blocking piece is pushed upwards through the elastic force of the elastic element in the brake device, the soft blocking piece abuts against the lower portion of fan blades of the fan so as to stop rotation of the fan, and when the dust collection box is installed in the containing groove of the cleaning machine body, the brake device is pressed downwards through the bottom of the dust collection box so that the fan can be separated from the soft blocking piece. Therefore, through the arrangement of the brake device, the danger caused by continuous rotation of the fan after the dust collection box is taken down can be avoided.