37results about How to "Sensitive work" patented technology

The invention relates to a device for preventing mud sand from entering the bottom end of a buoyancy vertical pipe of a net cage frame, and relates to technical equipment of cultivation net cages. The device is in a shape of a cylinder of which the opening is upwards, and a lower opening of the cylinder is provided with an elastic cover plate; a plurality of vertical edges are distributed in the cylinder uniformly in a radial shape; outer edges of the vertical edges are connected with the inner wall of the cylinder, inner edges of the vertical edges are connected with the outer wall of an annular nut in the cylinder; inner edges of a part in which the vertical edges are positioned above the nut incline towards the inner wall of the cylinder, and inner edges of a part in which the verticaledges are positioned below the nut are connected the outer wall of a bottom plate; the vertical edges form a vertical through hole and a traverse through hole for opening on the bottom plate; the traverse through hole is communicated with an inner cavity of the nut and a central through hole of a valve plug of a water inlet / drainage valve; the lower part of the valve plug of the water inlet / drainage valve is in threaded connection with the nut, and the upper part of the valve plug of the water inlet / drainage valve is fixedly arranged at an opening in the center of the bottom end of the buoyancy vertical pipe; and a top surface of the valve plug of the water inlet / drainage valve is in an inverted conical shape. The device is scientific and reasonable in design and stable and reliable in operation; and when the net cage sinks to the sea bottom, the mud sand can be prevented from entering the buoyancy vertical pipe, and the water inlet / drainage valve is not blocked, so that the water inlet / drainage valve operates flexibly and normally, and a self-balancing sink-float function of the net cage is stable and reliable.

The invention relates to the field of engineering bionic technology, in particular to bionic sharkskin making use of a shape memory alloy artificial muscle longitudinally-injected drag reducer. The bionic sharkskin making use of the shape memory alloy artificial muscle longitudinally-injected drag reducer comprises a supporting base, a hardened conductive layer I, artificial muscle flexible units, a hardened conductive layer II, a shark scale imitation skin layer and a drag reducer longitudinal injection device, wherein each artificial muscle flexible unit comprises a shape memory alloy artificial muscle spring, a pulling head, a two-section electric heating rod and a connection conductive wire, and each shape memory alloy artificial muscle spring has a certain amount of supporting strength. Compared with the prior art, the bionic sharkskin making use of the shape memory alloy artificial muscle longitudinally-injected drag reducer has the advantages that by the adoption of the design of shape memory alloy artificial muscle, a micro mucus secreting mechanism of the sharkskin is simulated by means of the unique material characteristic that the double-trip memory effect is presented under the driving of transformation temperature of the shape memory alloy artificial muscle, the working mode and control method of injecting a micro amount of the drag reducer are more sensitive, controllable and reliable compared with existing means, service life is guaranteed effectively, and a beneficial example is provided for the engineering bionic technology, especially the bionic drag reduction skin manufacturing technology, in the aspect of structure and function bionics.

The invention discloses an electromagnetic drainer, which comprises a drain pipe and a control unit, wherein the control unit comprises a magnetic field generating device sleeved outside the drain pipe and used for generating a magnetic field, and a sliding unit capable of sliding in the drain pipe vertically; the sliding unit comprises a connecting frame, two magnets arranged on the upper and lower parts of the connecting frame and a sealing unit sleeved with the connecting frame and matching the drain pipe; the magnets corresponds upper and lower ends of the magnetic field generating deviceand the electric field generating device generates magnetic field acting force which applies to the upper and lower magnets in the same direction; and the sealing unit selectively seals or switch on the end port of the drain pipe under the magnetic field acting force along the polarity change of the magnetic field generating device and the two magnets. The drainer is attractive in appearance, compact in structural matching, and more sensitive in work.

The invention publicizes one kind of combination pressure regulator valve, which have upper valve body and under valve body that connect together. The sidewall of the under valve body have the measure which lets air in, and the lower extremity of the under valve body has continually connection with the air drum. Its characteristics are: it has air drum connection end valve in vivo to connect the air inlet continually, and it connects the air inlet to be loaded with both sides of seal valve core. Above both sides seal valve core for the discharge cavity air inlet is located on above the valve body discharge cavity to have the discharge valve core cavity, and it has the discharge valve core in the cavity to discharges the valve core lower extremity and both sides seal valve core docking and the valve cavity air outlet to connect with a valve body integral type noise elimination organization on valve body upper extreme and pressure-regulating valve air inlet connection. Its beneficial effect is: The structure is novel and unique and the design is simple and reasonable. Moreover the resistance loss is small, and the discharge valve work is keen. Furthermore cone-way valve seal is reliable, and it enhances the thermostable performance, and the service life is long as well as the discharge blew off the noise elimination effect well. Finally the energy conservation effect is remarkable.

The invention discloses a selective laser melting single-tool bothway powder paving device which comprises a powder hopper, a feeding box, a scraper and a position sensor. The position sensor is in communication connection with a control system, starting and stopping of falling are controlled through the control system, and work is sensitive; a first rotating shaft and a second rotating shaft which are driven by a motor are arranged on the two sides of the feeding box, so that a stopping belt is driven to move, a falling opening is formed in the stopping belt and moves to a first feeding channel or a second feeding channel, powder falls to the left side or the right side of the scraper, meanwhile, a brush block is arranged on the inner wall of an installing hole, remaining powder on the stopping belt can be swept into the channels, and influences on movement of the stopping belt and work of the powder paving device are avoided. The powder paving device is sensitive in work and simple in structure, main structures are arranged outside the feeding box, checking is easy, and maintenance and replacement are facilitated.

The invention relates to a pilot piston type water way switching shunt valve which comprises a three-way valve body, an electromagnetic valve, a sealing rod and switching assemblies. Each of two water outlets of the three-way valve body is controlled by one switching assembly to be opened and closed. The electromagnetic valve drives the sealing rod to reciprocate and then two gears are arranged. According to one gear, the water pressure of one face towards the corresponding water outlet of a piston inside one switching assembly is larger than that of the other face of the piston inside the switching assembly, then the piston releases the water outlet, the water pressure of one face towards the corresponding water outlet of a piston inside the other switching assembly is smaller than that of the other face, and then the piston closes the water outlet. According to the other gear, the water outlet in the released state originally is closed, and the water outlet in the closed state originally is released. The two water ways can be controlled to be opened or closed only by adopting one electromagnetic valve, the function is achieved in a one-open and one-closed mode, the requirement for controlling existing shower heads and showers is met, the structure is simple, the requirement for space is small, and the better advantage is provided for the ultrathin appearance of the product.

The invention relates to a device for detecting the resistive and capacitive currents of a voltage-limiting surge protector. The device includes a commercial power sampling circuit, a leakage currentsampling circuit, a phase comparison circuit, a display drive circuit, and a state display circuit. The commercial power sampling circuit is connected with a commercial power supply line, and is usedfor sampling commercial power voltage. The leakage current sampling circuit is connected with a surge protector, and is used for sampling leakage current voltage. The input end of the phase comparisoncircuit is in circuit connection with the commercial power sampling circuit and the leakage current sampling circuit, and the phase comparison circuit is used for comparing the phases of the commercial power voltage and the leakage current voltage to get an output voltage. The input end of the display drive circuit is connected with the output end of the phase comparison circuit, and the output end is connected with the state display circuit. The display drive circuit is used for analyzing the output voltage of the phase comparison circuit and driving the state display circuit to display state. The resistive and capacitive currents of a voltage-limiting surge protector can be automatically detected, and the working condition of the voltage-limiting surge protector can be monitored in realtime.

The invention relates to the field of engineering bionic technology, in particular to bionic sharkskin making use of a shape memory alloy artificial muscle slowly-released drag reducer. The bionic sharkskin making use of the shape memory alloy artificial muscle slowly-released drag reducer comprises a supporting base, a hardened conductive layer I, artificial muscle flexible units, a hardened conductive layer II, a shark scale imitation skin layer and a drag reducer liquid device, wherein each artificial muscle flexible unit comprises a shape memory alloy artificial muscle spring, a pulling head, a two-section electric heating rod and a connection conductive wire, and each shape memory alloy artificial muscle spring has a certain amount of supporting strength. Compared with the prior art, the bionic sharkskin making use of the shape memory alloy artificial muscle slowly-released drag reducer has the advantages that by the adoption of the design of shape memory alloy artificial muscle, a micro mucus secreting mechanism of the sharkskin is simulated by means of the unique material characteristic that the double-trip memory effect is presented under the driving of transformation temperature of the shape memory alloy artificial muscle, the working mode and control method of slowly releasing the drag reducer are more sensitive, controllable and reliable compared with existing means, service life is guaranteed effectively, and a beneficial example is provided for the engineering bionic technology, especially the bionic drag reduction skin manufacturing technology, in the aspect of structure and function bionics.

The invention discloses a smoke dust absorption device for plasma cutting and a using method of the smoke dust absorption device, and relates to the technical field of auxiliary devices for the plasma cutting. The smoke dust absorption device for the plasma cutting and the use method of the smoke dust absorption device aim at solving the problem that the working intensity of workers is increased due to the fact that an existing smoke dust absorption device for the plasma cutting is not sensitive enough during smoke dust absorption. A smoke dust sensor is arranged on one side inside a smoke dust absorption main body, the smoke dust sensor is fixedly connected to the smoke dust absorption main body through a clamping block, a fixing lower plate block is arranged on the upper portion inside the smoke dust absorption main body, the fixing lower plate block is connected to the smoke dust absorption main body in a welded mode, screening net fixing blocks are arranged on the fixing lower plate block, air pump fixing blocks are arranged on the screening net fixing blocks, air extracting pumps are arranged inside the air pump fixing blocks, the air extracting pumps are fixedly connected to the air pump fixing blocks through clamping grooves, the number of the air extracting pumps is multiple, and the smoke dust sensor is electrically connected to the air extracting pumps.

The invention discloses a lifting limiting device for a steel wire rope on a winding drum. The lifting limiting device comprises the winding drum, a winding drum support, a platform, the steel wire rope and a power device, wherein one side of a mandrel of the winding drum is connected to the power device, the other side of the mandrel of the winding drum is connected to the winding drum support, the steel wire rope is connected to the winding drum, the winding drum support and the power device are fixed to the platform, one end of the steel wire rope vertically extends downwards to the position below the platform after being led out from the winding drum, two lifting limiting device bodies are arranged on the side, from which the steel wire rope led out, of the winding drum and are distributed on the two sides of the vertical downward part of the steel wire rope, supports of the two lifting limiting device bodies are fixed to the platform, and contact handles of limiting switches on the lifting limiting device bodies can make contact with the steel wire rope.

The invention relates to the technical field of rebar molding, in particular to a rebar smelting extrusion molding machine. The rebar smelting extrusion molding machine comprises a lower plate, an upper plate, a lower half pipe and an upper half pipe, wherein the lower half pipe is fixedly embedded in the upper end of the lower plate, a base is fixedly connected to the lower end of the lower plate, the upper half pipe is fixedly embedded in the lower end of the upper plate, a lifting column is fixedly connected to the upper end of the upper plate, the lower half pipe and the upper half pipe have the same shape of a half cylinder and are connected into a cylinder shape in a butt joint manner, an air pipe cavity and branch pipe cavities are formed in the upper plate, and one side of the airpipe cavity communicates with the several evenly-distributed branch pipe cavities. By means of the rebar smelting extrusion molding machine, the molten iron injection molding work can be performed inthe several unit pipe cavities at the same time, a traditional mode of injecting molten iron from one end of a molding pipeline is replaced, and the efficiency of molten iron injection molding and thequality of rebars are greatly improved; and through the design of a heat conductor, whether airflow passes through the air pipe cavity or not is sensitively sensed, then the progress of the molten iron extrusion injection molding work is fed back, and the function is stable and powerful.

The invention relates to a liquid storage tank with a resistance heater. The resistance heater is connected to the outer edge of a liquid storage tank body, the resistance heater is connected with a liquid storage tank pressure controller and a liquid storage tank temperature protector separately, and the liquid storage tank pressure controller and the liquid storage tank temperature protector areconnected with the liquid storage tank body separately. The liquid storage tank temperature protector includes a shell, and end opening of the liquid storage tank body is sealed, a temperature fuse is arranged inside the shell, and the temperature fuse is electrically connected with an insulated wire through a terminal; and in addition, a hygroscopic filler is arranged inside the shell.

The invention relates to a biological recognition module and a preparation method thereof. The method comprises the steps of: providing a substrate with a first surface and a second surface which areopposite to each other, and forming a first dielectric layer and a conductive wiring layer on the first surface of the substrate, forming a slotted region in the first dielectric layer, and then embedding an elastic buffer layer in the slotted region, providing a carrier plate, setting a release film and a biological recognition chip on the carrier plate, forming a metal retaining wall structure at the periphery of a bonding pad of the biological recognition chip through a photoetching process, arranging solder balls in an area, corresponding to the bonding pads, in the conductive wiring layer, then setting the biological recognition chip on the conductive wiring layer, enabling the elastic buffer layer to be in contact with the biological recognition chip, and melting the solder balls through a reflow soldering process to be embedded into the corresponding metal retaining wall structures, forming a plastic package layer on the substrate and forming a conductive column in the plastic package layer, and finally, thinning the substrate.

The invention relates to a light-type self-power-off electromagnetic ball valve. The electromagnetic valve comprises a valve body, a ball body, a valve seat, a valve rod, a filler, a pressing nut, a manual device, an actuator and a valve position display, wherein the valve body is fixedly arranged at the bottom of the electromagnetic ball valve, the valve seat is fixedly connected with the valve body, and the ball body is arranged in the valve body; the actuator is arranged on the upper portion of the valve body, the actuator is shaped like a box, and an explosion-proof layer is arranged in the actuator; a box body of the actuator is further provided with an automatic and manual device, one end of the valve rod is fixedly connected in the actuator, and the other end of the valve rod is connected to the valve body; and the outer side of the valve body is provided with the filler, and the filler is ethylene propylene diene monomer rubber. The light-type self-power-off electromagnetic ball valve is simple in structure, green, environmentally friendly, small in water discharge amount, good in sealing performance, free of leakage, wide in application range, wide in application range, sensitive in response, stable in work and long in service life.

The invention discloses an impact cut-off switch driving mechanism of an electric vehicle. The top of a switch seat is provided with a guide rail; the front end of the guide rail is sealed by a plug and the back end of the guide rail is provided with a magnet; the guide rail is internally provided with an impact cam, the undersurface of the impact cam is provided with a groove, and the back end surface of the groove is a curved surface with a lifting characteristic; the groove is internally provided with an idler wheel, the center of the idler wheel is hinged with one end of a connecting rod,and the other end of the connecting rod is hinged with the guide rail; and the idler wheel is supported by the top of a central spindle which is arranged in a switch box in a penetrated mode, and theswitch box is connected with the guide rail fixedly. When electric vehicles are subjected to impact, the impact cut-off switch driving mechanism can act automatically and rapidly so as to disconnect a trigger switch, thus cutting off a circuit of a power battery pack for supplying power externally, thereby avoiding the electric leakage caused by the impact, solving the problem of the electric leakage due to the impact of the electric vehicles, and meeting the safety requirement of the electric vehicles. The impact cut-off switch driving mechanism is simple in mechanical structure and flexibleand reliable in operation, and easy to assemble.

The invention relates to the technical field of light curtain sensors, and discloses a toll station vehicle separation detection light curtain sensor which comprises a connecting plate, the left end and the right end of the connecting plate are fixedly connected with two sets of supporting bases respectively, the upper surfaces of the supporting bases are fixedly connected with the bottom end of ashell, and the top of the shell is fixedly connected with a spring. According to the toll station vehicle separation detection light curtain sensor, a hand wheel is rotated to drive a rotating shaftto rotate, the rotating shaft drives a second bevel gear to rotate, the second bevel gear is matched with a first bevel gear, a threaded rod is enabled to rotate, then a movable plate ascends and descends under limiting of the threaded rod, and the height of the light curtain sensor is adjusted; the distance between the two sets of clamping plates can be adjusted conveniently, the light curtain sensors of different sizes are fixedly clamped, the two sets of supporting bases are located on the same horizontal plane through the arranged connecting plates, and signal transmission between the twosets of light curtain sensors is facilitated.

A vacuum relief valve for loading and unloading of an oil tank truck comprises a valve body, wherein a cover body is arranged at the top of the valve body; an air supply port is formed in the center of the cover body; a valve clack and a guide frame are arranged in the valve body; an upward connecting rod is arranged in the center of the top of the valve clack; a support is arranged on one side of the air supply port in the cover body; a balance knife edge is arranged at the top of the support; a balance arm is mounted at the balance knife edge; a notch matched with the balance knife edge is formed in the balance arm; a balancer is mounted at one end of the balance arm; and the other end of the balance arm is articulated with the connecting rod via a connecting sheet.The valve clack arranged in the valve body and used for sealing the air supply port is articulated with the balance arm via the connecting rod; air can be supplied into the oil tank truck automatically by the matching of the balancer when the oil tank truck generates a powerful suction force during the oil unloading; deformation of the oil tank truck and damages of the valve body are avoided; the maintenance expense is reduced; the whole sealability of equipment is further ensured; and toxic gas is prevented from being discharged to the atmosphere to result in environment pollution.

The invention provides a single-knife two-way powder spreading device for selective laser melting, which includes a powder hopper, a feeding box, a scraper and a position sensor. The two sides of the box body are provided with the first rotating shaft and the second rotating shaft driven by the motor, so as to drive the movement of the barrier belt. The barrier belt is provided with a discharge port, and the discharge port moves to the first feeding channel or the second feeding channel. , so that the powder falls on the left or right side of the scraper. At the same time, there is a brush block on the inner wall of the installation hole, which can sweep the remaining powder on the barrier belt into the channel, so as to avoid affecting the movement and powder spreading of the barrier belt. For the work of the device, the powder spreading device of the present invention is sensitive in operation and simple in structure. The main structure is arranged outside the feeding box, which is easy to find problems, and is convenient for maintenance and replacement.

The invention discloses a safety switch for cutting electricity in collision of an electric automobile. A guide rail is arranged at the top of a switch base; a collision cam is arranged in the guide rail; a groove is arranged on the bottom surface of the collision cam; a trolley wheel is arranged in the groove and supported by the top of a mandril; the mandril is arranged in a switch box; a locating sleeve is fixedly sleeved in the middle of the mandril; the upper end of the locating sleeve is connected with the switch box through a butterfly steel wire; a switch motion block is fixed at the lower end of the locating sleeve; and two wiring blocks in contact and match with the motion block are installed on the switch box. When being collided, the electric automobile can act automatically and quickly to break a triggering switch and cut a circuit of a power battery pack which supplies power to the outside, electric leakage generated by collision is avoided, the problem of electric leakage caused by collision the electric automobile is solved, and the safety requirement of the electric automobile is satisfied. The invention has the advantages of usage of mechanical structure, simple structure, easy assembly and sensitive and reliable work.

The invention relates to the field of engineering bionic technology, in particular to bionic sharkskin making use of a shape memory alloy artificial muscle transversely-injected drag reducer. The bionic sharkskin making use of the shape memory alloy artificial muscle transversely-injected drag reducer comprises a supporting base, a hardened conductive layer I, artificial muscle flexible units, a hardened conductive layer II, a shark scale imitation skin layer and a drag reducer transverse injection device, wherein each artificial muscle flexible unit comprises a shape memory alloy artificial muscle spring, a pulling head, a two-section electric heating rod and a connection conductive wire, and each shape memory alloy artificial muscle spring has a certain amount of supporting strength. Compared with the prior art, the bionic sharkskin making use of the shape memory alloy artificial muscle transversely-injected drag reducer has the advantages that by the adoption of the design of shape memory alloy artificial muscle, a micro mucus secreting mechanism of the sharkskin is simulated by means of the unique material characteristic that the double-trip memory effect is presented under the driving of transformation temperature of the shape memory alloy artificial muscle, the working mode and control method of injecting a micro amount of the drag reducer are more sensitive, controllable and reliable compared with existing means, service life is guaranteed effectively, and a beneficial example is provided for the engineering bionic technology, especially the bionic drag reduction skin manufacturing technology, in the aspect of structure and function bionics.

The invention publicizes one kind of combination pressure regulator valve, which have upper valve body and under valve body that connect together. The sidewall of the under valve body have the measure which lets air in, and the lower extremity of the under valve body has continually connection with the air drum. Its characteristics are: it has air drum connection end valve in vivo to connect the air inlet continually, and it connects the air inlet to be loaded with both sides of seal valve core. Above both sides seal valve core for the discharge cavity air inlet is located on above the valve body discharge cavity to have the discharge valve core cavity, and it has the discharge valve core in the cavity to discharges the valve core lower extremity and both sides seal valve core docking and the valve cavity air outlet to connect with a valve body integral type noise elimination organization on valve body upper extreme and pressure-regulating valve air inlet connection. Its beneficial effect is: The structure is novel and unique and the design is simple and reasonable. Moreover the resistance loss is small, and the discharge valve work is keen. Furthermore cone-way valve seal is reliable, and it enhances the thermostable performance, and the service life is long as well as the discharge blew off the noise elimination effect well. Finally the energy conservation effect is remarkable.

The invention discloses an environment-friendly and energy-saving type range hood which comprises a range hood main body; an environment-friendly smoke treater is arranged on the side surface of the range hood main body; a fan and an exhaust outlet is arranged at and formed in the top end of the environment-friendly smoke treater; the fan and the exhaust outlet are fixedly connected with the environment-friendly smoke treater through the range hood main body; a safety alarm device made of high-temperature resistant aluminum alloys is arranged on one side of the exhaust outlet, and is electrically connected with the range hood main body; and an intelligent water tank is arranged at the bottom of the safety alarm device, and is welded with the range hood main body. The environment-friendly and energy-saving type range hood is small, exquisite and compact in structure, and has good moisture resistance and the excellent smoke suction property; and the technical content is needed to be increased and technological innovation is needed to be strengthened to increase environmental awareness, so as to solve the air pollution problem caused by oil smoke emissions in China, and to bring a kitchen environment and a natural environment which are comfortable and clean to people.

The invention relates to a method for preparing a fingerprint recognition module, the method comprising: providing a substrate having opposite first surfaces and second surfaces; forming a first dielectric layer and a conductive wiring layer on the first surface of the substrate; Form a slotted area in the first dielectric layer; form a conductive metal column on the conductive wiring layer; provide a carrier plate, set a release film and a fingerprint recognition chip on the carrier plate; A retaining wall structure is formed on the board, and an elastic buffer layer is bonded on the fingerprint identification functional area; solder balls are arranged in the area corresponding to the pad in the conductive wiring layer, and then the fingerprint identification chip is arranged on the on the conductive wiring layer, so that the elastic buffer layer is embedded into the slotted area, and the solder balls are melted and embedded into the corresponding retaining wall structure through a reflow soldering process; a plastic sealing layer is formed on the substrate , thinning the substrate from the second surface of the substrate.

The invention discloses an electric automobile collision power-off switch trigger mechanism. A switch box upper body and a switch box lower body are in fixed connection. A center of the switch box upper body is opened with a through hole. A mandrel passes through the through hole from top to bottom. A middle part of the mandrel is fixed provided with a position sleeve. An upper end of the position sleeve is connected with the switch box upper body through a butterfly steel wire. A lower end of the position sleeve is fixedly provided with a switch motion block. A front wiring block and a back wiring block are provided between the switch box upper body and the switch box lower body, and both the wiring blocks contact with the switch motion block. According to the invention, when an electric automobile is in collision, a circuit supplying power outwardly of a power battery pack can be automatically and rapidly cut off, electric leakage caused by collision is avoided, a problem of vehicle electric leakage of the electric automobile caused by collision is solved, and a safety requirement of the electric automobile is satisfied. The electric automobile collision power-off switch trigger mechanism employs a mechanical structure and has the advantages of simple structure, easy assembly, and sensitive and reliable working, a complex circuit and a complex software system are avoided, and production cost is low.

The invention relates to the field of engineering bionic technology, in particular to bionic sharkskin making use of a shape memory alloy artificial muscle longitudinally-injected drag reducer. The bionic sharkskin making use of the shape memory alloy artificial muscle longitudinally-injected drag reducer comprises a supporting base, a hardened conductive layer I, artificial muscle flexible units, a hardened conductive layer II, a shark scale imitation skin layer and a drag reducer longitudinal injection device, wherein each artificial muscle flexible unit comprises a shape memory alloy artificial muscle spring, a pulling head, a two-section electric heating rod and a connection conductive wire, and each shape memory alloy artificial muscle spring has a certain amount of supporting strength. Compared with the prior art, the bionic sharkskin making use of the shape memory alloy artificial muscle longitudinally-injected drag reducer has the advantages that by the adoption of the design of shape memory alloy artificial muscle, a micro mucus secreting mechanism of the sharkskin is simulated by means of the unique material characteristic that the double-trip memory effect is presented under the driving of transformation temperature of the shape memory alloy artificial muscle, the working mode and control method of injecting a micro amount of the drag reducer are more sensitive, controllable and reliable compared with existing means, service life is guaranteed effectively, and a beneficial example is provided for the engineering bionic technology, especially the bionic drag reduction skin manufacturing technology, in the aspect of structure and function bionics.

The invention discloses a steel structure coating painting device and a construction method and relates to the technical field of building construction. The steel structure coating painting device comprises an upper supporting frame and a lower supporting frame. The upper supporting frame is fixedly connected with the lower supporting frame through connecting pieces. The upper supporting frame andthe lower supporting frame are both provided with telescopic connecting rods. A rolling brush is arranged at one end of each telescopic connecting rod. The bottom of the lower supporting frame is provided with an intelligent controller. The intelligent controller can control the telescopic connecting rods to move up and down. The steel structure coating painting device can control the telescopicconnecting rods to move the rolling brushes through the intelligent controller. Accordingly, the steel structure coating painting device achieves the functions of painting a steel structure without artificial intervention in the whole process and achieves automation.

The invention relates to the technical field of sensors, and particularly relates to a sensor mounting device for a workshop production line. The sensor mounting device comprises a shell, wherein a fixing seat is fixedly connected to the middle of the top end of the inner surface of the shell, a fixing shell is fixedly connected to the top end of the inner surface of the shell and located on the left side of the fixing seat, a sliding sleeve is fixedly connected to the top end of the inner surface of the shell and located on the right side of the fixing seat, a base is fixedly connected to the middle of the bottom end of the inner surface of the shell, and a sliding groove is formed in the bottom end of the inner surface of the shell and located on the outer side of the base. When a sliding plate slides in the shell, the sliding plate drives an ejector rod to slide on the lower surface of the fixing shell through a connecting block, meanwhile, the ejector rod drives a telescopic plate to slide in the fixing shell, a coolant in the fixing shell is released, the working temperature of a sensor is reduced, the working temperature of the sensor is kept at the normal temperature, and the service life of the sensor is prolonged.

The invention discloses an inductive switch control circuit with a wide input voltage range. The circuit comprises a rectifier bridge BR1, a control chip U1, a relay K1, an inductor CN1, a capacitor C1, a polar capacitor C2, a polar capacitor C3, a polar capacitor C4, a diode D1, a diode D2, a diode D3, a voltage stabilizing diode Z1, an inductor L1 and a triode Q1. A first pin of the rectifier bridge BR1 is connected with an N line of an input power supply through a protective tube F1; a second pin of the rectifier bridge BR1 is connected with a DRAIN pin of the control chip U1, a third pin of the rectifier bridge BR1 is connected with an L line of an input power supply, a fourth pin of the rectifier bridge BR1 is grounded, and a second pin of the rectifier bridge BR1 is connected with apositive electrode of the polar capacitor C4. The circuit is sensitive in induction and stable in work, the voltage input range is AC / DC24V-AC / DC265V, and the circuit is convenient to use.

The invention relates to a micro semi-automatic ball valve which comprises a hand wheel, an actuator, a valve rod, a valve body, a ball core, a valve seat, a seal ring and observation windows. The valve body is arranged on the top part of the ball valve; the valve body comprises an inlet and an outlet symmetrical left and right; the valve seat is arranged in the middle in the valve body; the ballcore is arranged on the valve seat; the valve rod is vertically arranged in the valve body; one end of the valve rod is connected onto the ball core; the other end of the valve rod is connected onto an output shaft of the actuator; the actuator is arranged on the upper part of the valve body; the hand wheel is connected to the upper part of the actuator; the multiple observation windows are arranged on the top part of the actuator; and the seal ring is arranged in the valve body. The micro semi-automatic ball valve provided by the invention is simple in structure, environmental-friendly, smallin water discharge, good in sealing performance, zero-leakage, wide in application range, wide in appropriate temperature range, sensitive in reaction, stable in working, and long in service life.