97results about How to "Overcoming gravity" patented technology

The invention discloses a composite-wing vertical take-off and landing unmanned aerial vehicle. A conventional fixed-wing aerodynamic layout is adopted to be combined with an X-shaped four-axis layout, and the aerial vehicle states such as vertical take-off and landing, hovering and high-speed cruising are achieved. The yaw control moment is increased through a variable-pitch propeller installed on a vertical tail and a four-axis motor which is installed on a wing and has a tilt angle, and the robustness and the control precision of the large-rotational-inertia composite-wing unmanned aerial vehicle in the low-speed flying state.

The embodiment of the invention provides a curtain lifting mechanism and projection equipment. The curtain lifting mechanism comprises a base, a winding device, a curtain and a folding device; the winding device is mounted on base, the curtain is provided with a first edge and a second edge opposite to the first edge; the first edge is connected to the winding device, the winding device can wind the curtain through the first edge, the folding device comprises a telescopic support and an elastic component, the telescopic support is connected with the base and the second edge of the curtain, thetelescopic support can contract or extend relative to the base to drive the second edge to be close to or away from the base, and the elastic component is elastically connected to the telescopic support to provide elastic force for unfolding the telescopic support relative to the base so that the curtain can be kept flat after being unfolded. After the winding device unfolds the curtain, the curtain is kept in a flattened state through the telescopic support and the elastic component, the curtain can overcome the influence of gravity, the unfolding mode from bottom to top is achieved, and thebase can be placed on any platform and does not need to be hung on a ceiling.

The present invention discloses a hermetically sealing waterproof construction method for a basement, and relates to the field of building waterproof construction. The method comprises the steps of: successively performing construction of waterproof materials to a base plate, side walls and a top plate for slope excavation underground construction after concrete cushion, the side walls and the top plate are completed, then making waterproof protective layers to prevent waterproof layers from being destroyed when assembling reinforcement subsequently, and finally performing waterproof construction of the top plate. A four-side surrounded waterproof coiled material layer is formed in the basement, every node and seaming positions are ensured to be sealed and firmly bonded by adoption of the hermetically sealing technology, the hermetically sealing waterproof effect is achieved, and leakage is completely prevented.

The invention relates to a device and a method for metering and distributing powder for preparing dough cakes. The device comprises an upper cavity and a lower cavity, wherein a powder pusher is arranged in the upper cavity; a spoked wheel is arranged in the lower cavity; the powder pusher and the spoked wheel realize rotary motion on a same rotating shaft; the powder to be distributed sequentially passes through a connecting sink and the lower cavity from the upper cavity and then falls into a metering cup. According to the device and the method, the falling gravity of the powder falling into the metering cup from partitioned spaces among spokes is controlled to be the gravity of the powder in the falling process, and the quantity of the powder falling from each partitioned space is identical, so that the metering and the distributing of the powder can be realized precisely. The device and the method have the advantages of smart and reasonable structural layout, high work efficiency and strong practicability.

The invention relates to an adjustable reactor with a magnetic wedge, which belongs to the technical field of adjustable reactor manufacturing and aims to solve the problems that the conventional reactor is inconvenient to adjust and poor in linearity. The adjustable reactor comprises a rectangular main magnetic circuit frame, an alternating current winding, the magnetic wedge and two nonferromagnetic insulating plates, wherein the rectangular main magnetic circuit frame is composed of a winding iron core, a lower iron yoke, an iron core with an air gap and an upper iron yoke which are sequentially connected with one another end to end; the lower iron yoke and the upper iron yoke are opposite in the horizontal direction; the alternating current winding spirally wraps the winding iron core; the horizontal air gap is formed in the center of the iron core; the magnetic wedge is embedded in the horizontal air gap; the nonferromagnetic insulating plates are respectively arranged between the magnetic wedge and the two side walls of the horizontal air gap; and the magnetic wedge and the two nonferromagnetic insulating plates are clamped and fixed in the horizontal air gap. The technical scheme of the adjustable reactor disclosed by the invention can be applied to manufacturing of reactors.

The invention belongs to the technical field of biomedical engineering and relates to an artificial heart auxiliary device, in particular to a magnetic resistance suspension centrifugal type device which comprises three parts, namely a stator (1), a magnetic suspension rotor (2) and a clearance (3), wherein a left diametrical magnetization permanent magnet array (11) and a right diametrical magnetization permanent magnet array (14) are in a circular ring shape and are nested at the left and right sides of the inner wall of the magnetic suspension stator (1); a left coil winding (12) and a right coil winding (13) are positioned at the center of the inner side of the magnetic suspension stator (1); a left diametrical magnetization permanent magnet ring (21) and a right diametrical magnetization permanent magnet ring (23) are fixedly arranged on the left and right sides of a rotating shaft (20); a motor rotor iron core blade (22) is fixedly arranged at the middle of the rotating shaft (20), is in a bent tooth shape and is formed by laminating silicon steel sheets. The magnetic resistance suspension centrifugal type device can be used for solving the problems of large size and high power consumption of a third-generation artificial heart auxiliary device and has the advantages of simple structure, flexibility in control, high in reliability and the like.

The invention provides an air-cooled refrigerator and an air duct cover plate and a cabinet of the air-cooled refrigerator. The air duct cover plate of the air-cooled refrigerator is provided with strip-type air supply outlets which are transversely arranged, and wind is obliquely upwardly sent out through the strip-type air supply outlets. The air duct cover plate is simple in structure and convenient to manufacture; the strip-type outlets are transversely arranged in the air duct cover plate, so that trends that the wind sent out descends vertically are alleviated, closed areas are avoided forming among the neighboring air supply outlets due to the fact that a plurality of air supply outlets are formed, airflow dead corners are avoided, and condensation and frost formation are prevented inside the air-cooled refrigerator.

The invention provides a fan blade fatigue loading and gravity compensation device and a test method thereof, belonging to the field of a blade load simulation test device, and particularly relates to a fatigue loading and gravity compensation device for fan blades and a test method thereof. The fan blade fatigue loading and gravity compensation device comprises a fatigue loading device and a gravity compensation device, the fatigue loading device comprises a blade clamp (5), a power device and a fixing guide rail (1), the bottom of the power device is connected with the guide rail (1) which is fixedly arranged on the ground, the top part of the power device is hinged to the bottom of the blade clamp (5), one side of the fatigue loading device is provided with the gravity compensation device, and the external force loading end of the gravity compensation device is connected with the top part of the blade clamp (5). Firstly, the traditional installation and loading method of fixing the loading device on the surface of a blade loading point is changed, and the inherent properties of blades are maintained. Moreover, extra gravitational influence on the blades caused by a test device can be eliminated by the added gravity compensation device, thereby completely avoiding the defect of test data distortion resulting from installation of the test device.

The invention discloses a double-oxidation synergistic electroosmosis sludge transverse deep dewatering system. The system comprises a power supply, a sludge reaction chamber, a cathode drainage device, an anode piston and an electric push rod; the sludge reaction chamber comprises a cylinder body which is horizontally arranged from left to right; a mud adding hole is formed in the top of the cylinder body; a left support plate and a right support plate are respectively and fixedly arranged at the left end and the right end of the cylinder body; the cathode drainage device is arranged on the left support plate at the left end opening of the cylinder body; the anode piston is slidably, coaxially and hermetically connected in the cylinder body; the right end surface of the anode piston is coaxially connected with a driving rod; the power driving end of the electric pushing rod is coaxially connected with the right end of the driving rod; and the positive electrode and the negative electrode of the power supply are respectively connected with the anode piston and the cathode drainage device through wires. The invention further discloses a dewatering method of the double-oxidation synergistic electroosmosis sludge transverse deep dewatering system. The system is reasonable in design and simple in structure, is convenient to operate during sludge dewatering, has high destruction capability on sludge organic matter, has a high moisture removal rate and does not cause secondary pollution.

The invention discloses a full-seal waterproof construction method for a side wall and an engineering top face, and relates to the field of building waterproof construction. The method comprises the steps that (1), leveling treatment of a building envelope is carried out; (2), waterproof rolls are laid, wherein the waterproof rolls are fixed to the side wall through a temporary fixing method; (3), joints are strengthened; and (4), a waterproof protection layer is made. The waterproof rolls are waterproof rolls capable of generating the chemical crosslinking reaction and the physical mortise and tenon function with cast-in-place concrete. Sealant is waterproof sealant capable of being in chemical crosslinking reaction and physical mortise and tenon cooperative binding with cement or concrete. According to the operation and construction characteristics of the side wall of underground engineering, the method of fixing the waterproof rolls in advance and then pouring side wall concrete to be bound with the waterproof rolls is adopted, bonding of large-area rolls is ensured, seamless bonding of each joint and each seam is ensured through the full-seal technology, and the waterproof effect of full-seal water prevention and leakage eradication is achieved.

The invention discloses a microalgae flotation efficiency predicting device and method based on microalgae surface characteristics. The predicting device comprises a controller, a contact angle detecting module, a Zeta potential measuring instrument and a data processing device, wherein the input end of the controller is connected with an air flow meter, a PH detecting meter, a parameter setting module and a timer, and the output end of the controller is connected with a stirring module, a centrifugal module and a display. The predicting method comprises the steps that 1, a microalgae and detection liquid contact angle is determined; 2, microalgae Zeta potential is determined; 3, microalgae surface free energy is calculated; 4, microalgae flotation is performed; 5, the microalgae flotation efficiency is calculated; 6, the relation between the microalgae flotation efficiency and the microalgae surface free energy is obtained. The relation between the microalgae flotation efficiency and the microalgae surface free energy can be obtained, the microalgae flotation efficiency under different surface free energies can be accurately and reliably predicted, and a basis is provided with high-efficiency microalgae flotation conditions.

The invention relates to the technical field of fire safety, and discloses a vehicle-mounted fire extinguisher protection box which comprises a base. A supporting spring is fixedly installed in the middle of the upper surface of the base, a tray is fixedly installed at the other end of the supporting spring, and a circular groove is formed in the middle of the upper surface of the tray. Accordingto the vehicle-mounted fire extinguisher protection box, a permanent magnet is arranged in the supporting spring, meanwhile, cutting coils are arranged on the two sides, vibration mechanical energy isconverted into electric energy through movement of cutting magnetic induction lines, the current magnitude is changed by changing the turn ratio of voltage transformation coils, the electric energy is converted into chemical energy to be stored through an electrolytic tank, and then a thermoelectric second effect is used for transmitting electric potential energy to P-type semiconductors and N-type semiconductors, so that when the direction of current at the axis is N-P, an inner end plate absorbs heat, the direction of current far away from the axis is P-N, an outer end plate releases heat,the effect of refrigeration inside the protection box body is achieved, and explosion of a dry powder extinguisher due to over-high temperature is avoided.

The invention discloses indoor fitness equipment for university physical education. The fitness equipment comprises a base, a base plate, a fixed seat, a stepping motor, a rotary shaft, a fixed rod, asliding sleeve, a transverse railing, a protective mat, parallel bars, drawing box, a running machine, a backup plate, an avoidance hole, a seat, a guide cylinder, a weight column and a pull rope. According to the fitness equipment, the structure is ingenious, the functions are powerful, an intensive design is firstly carried out on multiple sets of exercising mechanisms, it is convenient for students to run, jump, perform pulling force training and the like, the occupied area is greatly reduced, the indoor placement and use are convenient, and finally the university indoor stadium is utilized to facilitate promotion and application.

The invention belongs to the field of unmanned aerial vehicles, and provides an unmanned aerial vehicle device capable of prolonging flight time and an implementation method. The unmanned aerial vehicle device capable of prolonging flight time comprises a body and a master control unit arranged in the body. Auxiliary propellers are further installed around the body, and an airbag device is further installed on the body. The auxiliary propellers are controlled by the master control unit, the rotation planes of the auxiliary propellers are perpendicular to the horizontal plane, and the directions of the rotation planes of the auxiliary propellers are adjustable. The airbag device is arranged on the upper portion of the body structure of the unmanned aerial vehicle, a cavity used for being filled with small-density gas with the density smaller than that of air is formed in the airbag device, and the airbag device is further connected with a discharge valve used for discharging gas in the airbag device. The unmanned aerial vehicle device only consumes a little onboard energy in the process from taking-off to landing preparation and can prolong flight time, and thus the working efficiency of the unmanned aerial vehicle is improved.

The invention discloses a tunnel horizontal rotary jet construction method. The tunnel horizontal rotary jet construction method comprises the steps that a borehole is drilled by using a horizontal rotary jet drilling machine, wherein the horizontal rotary jet drilling machine comprises a movable machine body, a borehole supporting frame group, a rotary jet supporting frame group, a drilling device and a rotary jet device; the drilling device is withdrawn from the borehole after drilling is completed; the rotary jet device is sent to the tail end of the borehole after a drill rod is withdrawncompletely from the borehole; and pre-prepared cement slurry is supplied to a spray head assembly of the rotary jet device by using grouting equipment; the spray head assembly is started to enable thehigh-speed sprayed cement slurry to drive soft rock around the borehole to rotate, stir and melt into a whole; as the spray head assembly withdraws from the borehole while rotary jet grouting, a reinforced pile body is formed along a first type borehole from inside to outside; horizontal rotary jet grouting is stopped after the spray head assembly completely is withdrawn from the borehole; and after all the reinforced piles are solidified and the strength of an array-shaped stability system formed by the reinforced piles is tested to meet the requirements, large-section mechanical excavationis carried out to form a tunnel.

The invention discloses a gravity compensating device and a robot. The robot is provided with the gravity compensating device. The gravity compensating device comprises a first executing end, a secondexecuting end and a swinging arm; the first executing end is provided with a driving shaft and a driving motor which is in transmission connection with the driving shaft; one end of the swinging armis fixed to the driving shaft, and the other end of the swinging arm is provided with a linkage shaft parallel to the driving shaft; and the second executing end is fixedly installed on the linkage shaft, a first belt wheel is fixedly installed on the driving shaft, a second belt wheel is fixedly installed on the linkage shaft, and the first belt wheel and the second belt wheel are sleeved with abelt. Compared with a traditional structure, the gravity compensating device has the advantages that gravity compensating is conducted in a mechanical mode, and the production cost can be reduced; andalgorithm compensating does not need to be conducted on the robot, the running load of a robot system is reduced, the control process of the driving motor is simplified, the stability of the robot inthe running process is improved, and the service life is prolonged.

The invention discloses a glass bottle surface spraying protection friction experiment device. Key points of the technical scheme are as follows: the device comprises a rack outer frame, a workpiece platform, an upper glass bottle and a lower glass bottle, an electric actuator is mounted on one side of the top of the workpiece platform; an angle adjusting mechanism is arranged at the top of the electric actuator; the angle adjusting mechanism can be positioned at the top of the electric actuator to do reciprocating linear motion; a first glass bottle fixing mechanism is arranged at the top ofthe angle adjusting mechanism; the lower glass bottle is fixed at the top of the first glass bottle fixing mechanism; a second glass bottle fixing mechanism is arranged at the top of the first glass bottle fixing mechanism; the second glass bottle fixing mechanism can fix the upper glass bottle at the bottom; a pressure driving mechanism is arranged at the top of the second glass bottle fixing mechanism, the pressure driving mechanism applies pressure which can be accurately controlled and is downward to the second glass bottle fixing mechanism, and the lower glass bottle does linear motion while the upper glass bottle is tightly attached to the lower glass bottle, so that friction between glass bottle spraying is simulated.

The invention discloses magnetic cleaning auxiliary equipment for an automobile side window in rainy and snowy days. The equipment comprises a mounting frame, a sliding rail is fixedly connected to the middle of an inner cavity of the mounting frame and located on the front face of vehicle window glass, electromagnets are connected to the inner surfaces of the sliding rails in a sliding manner; acapacitor mechanism is fixedly connected to the left side of the bottom of the inner cavity of the mounting frame; cleaning strips are movably connected to the positions, located on the back face of the automobile window glass, of the top and the bottom of an inner cavity of the mounting frame, recovery sealing mechanisms are fixedly connected to the positions, located on the cleaning strips, of the top and the bottom of the inner cavity of the mounting frame, and limiting plates are movably connected to the sides, away from each other, of the cleaning strips. The invention relates to the automobile accesaory technical field. Manual adjustment is carried out through magnetic force, the side window of the automobile is effectively cleaned, personnel do not need to operate outside the automobile, self safety is guaranteed, and the equipment is convenient and fast to use, suitable for various weather environments, simple in structure, capable of being installed inside an automobile door and free of influence on the attractiveness of the automobile.

The invention discloses a composite-wing vertical take-off and landing unmanned aerial vehicle. A conventional fixed-wing aerodynamic layout is adopted to be combined with an X-shaped four-axis layout, and the aerial vehicle states such as vertical take-off and landing, hovering and high-speed cruising are achieved. The yaw control moment is increased through a variable-pitch propeller installed on a vertical tail and a four-axis motor which is installed on a wing and has a tilt angle, and the robustness and the control precision of the large-rotational-inertia composite-wing unmanned aerial vehicle in the low-speed flying state.

The invention provides a clamping structure of an infusion apparatus catheter coil, and belongs to the technical field of medical apparatus assembling equipment. The clamping structure solves the technical problems that the catheter clamping in the prior art is complicated and unstable, and the like. The clamping structure comprises a first clamp arm and a second clamp arm in opposite arrangement, wherein the first camp arm and the second clamp arm can relatively move and draw close, the opposite surfaces of the first clamp arm and the second clamp arm are mutually parallel clamp planes, the bottoms of the clamping planes of the first clamp arm and the second clamp arm are respectively provided with a first supporting part and a second supporting part which are in a projected shape, the bottoms of the clamping planes of the first clamp arm and the second clamp arm are also respectively provided with a first avoiding groove and a second avoiding groove, the second supporting part can be embedded into the first avoiding groove, and the first supporting part can be embedded into the second avoiding groove. The upper surfaces of the first supporting part and the second supporting part can be respectively realize the positive contact with the catheter coil, the weight of the whole catheter coil can be born, the catheter coil deformation due to excessive clamping force is avoided, and meanwhile, the looseness falling of the catheter coil can be avoided.

Provided is a building. A fine water mist fire fighting device, a supporting platform and a rope descending device are arranged above the building. The fine water mist fire-fighting device comprises an electric pipe winding device, a rubber pipe and a fire-fighting spray gun or a sprayer connected with the rubber pipe. The position above the building or the rope descending device is provided with a pulley, a rope winds through the pulley and forms a first stay cord and a second star cord on the two sides of the pulley, the first stay cord is directly connected with the supporting platform or connected with the supporting platform through an inclined stay cord, a traction rope is connected to one side of the supporting platform, and under the building, the electric pipe winding device can be controlled to rotate and the fire-fighting spray gun or the sprayer and the supporting platform are controlled to descend and extend along the outer side of an outer wall of the building by pulling or dragging the descending second stay cord.

The invention discloses a numerical control winding machine tool of a vertical iron core. the numerical control winding machine tool comprises a tool body, a pressure arm mechanism, a main shaft transmission component, a faceplate core mold component and a damping discharge mechanism, wherein the pressure arm mechanism is positioned at the top end in the tool body, and consists of a rotating shaft, a bearing, a swinging arm bracket, a push rod, a cylinder, a cylinder bracket, a swinging arm and a core mold pressure roller; the main shaft transmission component is positioned at the top end in the tool body, and consists of a motor, a speed reducer, a belt wheel, a main shaft, a bearing and a bearing bracket; the faceplate core mold component is mounted at the top end of the main shaft transmission component, and consists of a core mold, a mold base and a faceplate; and the damping discharge mechanism is mounted on the side surface of the tool body, and consists of a shaft, a bearing, a thread shaft and a bracket. The numerical control winding machine tool can be applied to the winding operation of multistage step-shaped or R-shaped iron cores of wound iron core distribution transformers, and can effectively improve the material utilization rate and the lamination coefficient.

The invention discloses a core taking mechanism for roll paper core recovery. The mechanism comprises an automatic overturning part, an automatic arranging part, an automatic speed adjusting part, a core taking part, a negative-pressure part, a paper cutting falling part, a core falling return part and a core taking pressing part which are fixed on a frame, wherein a discharge end of the automatic overturning part is connected with a feed end of the automatic arranging part; the automatic speed adjusting part is connected to a discharge end of the automatic arranging part; the core taking part is fixed on the negative-pressure part above a discharge end of the automatic speed adjusting part; the paper cutting falling part is arranged on one side of the core taking part; the core falling return part and the core taking pressing part are positioned around the negative-pressure part; and the core falling return part and the core taking pressing part are spaced by multiple stations. The mechanism integrates such functions of automatic overturning, automatic sorting, automatic core taking and paper core separation, realizes full-automatic core taking, is precise in roll paper positioning, is various in core taking specifications, improves the working efficiency, and saves the cost.

The invention relates to the technical field of medical instruments, and concretely relates to a foot-operated cart for carrying a cleaning frame of a medical cleaning machine. The cart comprises a frame, a tank body is formed in the top of the frame, the left side, the right side and the rear end of the tank body are each provided with a blocking wall, a protruding part is arranged at the front end of the tank body, guide damping pieces are symmetrically arranged on the two sides of the protruding part, a pedal is arranged at the bottom of the rear end of the frame, a cart coupler lock and arotating shaft are arranged at the front end of the frame, one end of the rotating shaft is in shaft connection with the frame, and the other end of the rotating shaft is connected with the pedal through a transmission assembly. Only the cart coupler lock needs to be butted with a shackle to make the shackle hooked by the cart coupler lock, so the cart can be stably connected with the cleaning machine, the cleaning frame can be stably and accurately pushed into a cabin, meanwhile, the cart and the cleaning machine can be disconnected only by treading the pedal downwards, and the carrying convenience of the cleaning frame in the using process of the medical cleaning machine is improved.

The invention relates to a control moment gyroscope vibration isolation support performance testing device and method in the field of testing technical equipment. The device comprises a vibration table which is used for providing a vibration source and a vibration effect; a vibration isolation bracket which is arranged on the vibration table and is used for providing a vibration isolation effect; a control moment gyroscope simulation piece which is arranged on the vibration isolation bracket; and a suspension mechanism which is arranged above the vibration isolation support, is of a suspended ceiling structure and is used for overcoming the gravity of the control moment gyroscope simulation piece and the vibration isolation support; and acceleration sensors are arranged on the vibration table, the vibration isolation bracket and the control moment gyroscope simulation piece. The device is advantaged in that an acceleration time-domain signal can be observed in real time, the time-domain signal can be processed in real time to obtain the acceleration frequency-domain signal, the vibration isolation performance of the vibration isolation support in the three translation directions can be tested through the test method, and the test method is simple, flexible, easy to operate and high in practicability.

The invention relates to the technical field of steel bar machining devices and discloses a steel bar stretching unit used for gear ring type steel prestress. The steel bar stretching unit comprises aunit body, a trapezoidal block is fixedly mounted on the left side of the top of the unit body, a long rod is movably connected to the top of the trapezoidal block in a sleeved mode, one end of the long rod penetrates through the trapezoidal block, extends to the exterior of the trapezoidal block and is fixedly connected with a round button in a sleeved mode, the other end of the long rod sequentially penetrates through the trapezoidal block and the unit body, extends into the unit body and is movably connected with positioning blocks in a sleeved mode, and the outer surface of the long rod is movably connected with rigid springs in a sleeved mode, wherein the rigid springs are located between the positioning blocks and the inner wall of the unit body. One end of a to-be-stretched steel bar is wound around a roller and a cylinder and penetrates though the space between two idler wheels and two limiting blocks, at the moment, a motor is stated to enable the steel bar to pass though thepositioning blocks, the influence of the self gravity of the steel bar is avoided because of cooperation between the positioning blocks and the long rod as well as cooperation between the positioningblocks and the rigid springs, uniform force bearing is realized, thus the strength of the stretched steel bar is same, and the practicability of the stretching unit is improved.

The invention discloses a display rack used for a liquid crystal display. The upper end of the display rack is provided with a sliding rail. A pulley is arranged onto the sliding rail. A liquid crystal display connecting piece is arranged on the pulley. The sliding rail is a horizontal sliding rail. The liquid crystal display connecting piece is hinged onto the pulley. The lower end of the display rack is provided with a telescopic rod. The display rack used for the liquid crystal display has following beneficial effects: by means of an air cylinder telescopic rod, adjustments are made to front and back positions of the liquid crystal display; an inductive control part brings convenience for working staff below to control adjusting angles of a television in the manner of remote control; a lifting jack is utilized so that the television can be conveniently installed at the display rack at the higher position; by means of a climbing ladder, installation is conveniently performed; a safety rope helps to guarantee safety of a worker so that the display rack is more humanized; an angle-adjustable rotary lamp not only helps to realize illumination of an exhibition hall but also facilitates illumination of a working environment; a monitor installing rack and a fire-fighting emergency illumination lamp brings convenience for detachment and installation; with the environment protected, pollution of punching-induced dust to the environment is reduced; and a simple structure is obtained so that the display rack is of great practicality.

The invention discloses a tensile cable which comprises a conductive core, a tensile member and an outer sheath. The conductive core comprises a conductive wire and an insulation layer which coats the conductive wire. The tensile member comprises a steel wire rope and a sheath layer which coats the steel wire rope. An inner core is formed by the conductive core and the tensile member. The outer sheath coats the inner core. The cross section of the outer sheath is a circle. According to the tensile cable, a circular structure is used, the problem of cable tensile property is solved effectively, the manufacturing cost is saved, and convenience is brought to large-scale popularization and application.

The invention discloses a building. A water mist fire extinguishing device, a support platform and a rope declining device are arranged above the building. The water mist fire extinguishing device comprises an electric winder, a rubber tube and a fire extinguishing spray gun or nozzle connected to the rubber tube. The upper part of the building or the rope declining device is provided with a pulley. A rope winds the pulley and forms a draw rope 1 and a draw rope 2 at the two sides of the pulley. The draw rope 1 is directly connected to the support platform or is connected to the support platform by a diagonal tension rope. The side of the support platform is connected to a pulling rope. The fire extinguishing spray gun or a connector with the fire extinguishing spray gun or nozzle is connected to the support platform. The floors below the building or the outer part of the building can control the fire extinguishing spray gun or nozzle, the support platform and the pulling rope to fall off along the outer side of the outer wall of the building.

The invention discloses a low-rotation-speed micro-particle separation device. According to the design, the centrifugal force is used for overcoming self-gravity of the liquid, so that the centrifugalforce can climb upwards from bottom to top in the sample separation cup, a thin layer is formed on the inner wall, a special limiting space is formed by the liquid thin layer, micro particles are subjected to polarization brownian motion, differential migration is realized, the aim of separating the micro particles is achieved, the device comprises a motor, a transmission shaft, a sample separation cup, a liquid inlet pipe, a sample collection tank, a liquid discharge pipe and a sealing isolation layer, wherein the motor is connected with the sample separation cup through the transmission shaft. The method can be used in the industrial field, such as production of colloidal gold particles, diamond sorting for cutting, high-grade coal, mineral refining and the like, and can also be used inthe field of biological medical treatment, and microorganisms, the method can be used for separating and analyzing different types of microorganisms, and is simple in separation means, high in success rate, wide in application range and high in practicability.