160results about How to "Play a protective function" patented technology

The present invention discloses one kind of high temperature resistant ceramic cooker suitable for use in electromagnetic induction furnace. The high temperature resistant ceramic cooker is produced with the main materials, including lithium-containing mineral material, quartz, kaolin, etc, and through grinding, mixing, forming, drying, glazing and high temperature baking to obtain the ceramic body; coating far infrared radiation layer, electromagnetically inducing eddy flow heating layer and far infrared reflecting layer to the bottom of the ceramic body; and roasting. It has high heat stability, no cracking even in no-water cooking state, high heat utilization rate and long service life. It is especially suitable for cooking in electromagnetic induction furnace.

The invention discloses an automatic door control system which comprises a PLC main controller, a periphery circuit, an infrared detector, a door operation position detection and alarm circuit, a stepping motor controller, a control mode switching circuit and an automatic door protection circuit, wherein the periphery circuit, the infrared detector, the door operation position detection and alarm circuit, the stepping motor controller, the control mode switching circuit and the automatic door protection circuit are arranged on the PLC main controller. According to the automatic door control system, a programmable logic controller (PLC) is adopted as the automatic door main controller, and therefore the advantages of high reliability and anti-interference are brought into full play. An MC33033 special control chip is used for controlling a brushless direct current motor, and therefore the safety and the reliability of the automatic door control system are greatly improved. As a pyroelectric infrared sensor is used for detecting whether someone is close to an automatic door, the automatic door control system is high in sensitivity, free of influence of the outside, and convenient to install and maintain.

The invention discloses a construction method of near natural mangrove forests at reef shallows. Three layers of cofferdams sequentially including a first cofferdam, a second cofferdam and a third cofferdam are arranged, wherein the first cofferdam is formed through piling of hollow wave resistant blocks, and mangrove plants are planted; a pioneer protection layer is between the first cofferdam and the second cofferdam, a near natural recovery layer is between the second cofferdam and the third cofferdam, and local mangrove forest plants are planted; and a seedling supply layer is in the thirdcofferdam. According to the construction method of near natural mangrove forests at reef shallows, the pioneer protection layer is arranged outside, so that the effects of preventing wind and preventing waves can be achieved, destruction of the wind and the waves to the near natural recovery layer is decreased, and planting of the local mangrove forest plants in the near natural recovery layer isfacilitated; mangrove plantlets are cultivated in the seedling supply layer, and seedlings can be voluntarily and continuously supplied to the near natural recovery layer, so that long distance purchase and transportation of seedling sources can be avoided, and the production cost can be reduced; and three layers are divided, so that ecological stability and species diversity of mangrove forest communities are increased. The construction method disclosed by the invention is used for the field of mangrove forest planting.

The invention relates to a simple and detachable safety protection device for aerial work. The simple and detachable safety protection device comprises a safety belt body, wherein a mounting plate isfixed on the front surface of the safety belt body, the mounting plate is rotationally connected with a winding shaft which is fixedly connected with a safety rope, a fixer is arranged at the end, faraway from the winding shaft, of the safety rope, and the mounting plate is connected with a connecting buckle used for being connected with the fixer; and a rotating shaft is sleeved with a torsion spring, one end of the torsion spring is fixed with the mounting plate, the other end of the torsion spring is fixed with the winding shaft, and the torsion spring is tightened when the safety rope extends out of the winding shaft. By the adoption of the technical scheme, after a user finishes working, the length of the safety rope meets the requirement that the user enters a room, then the connection between the fixer and the connecting buckle is released indoors, and the safety rope is pulled and wound indoors by rotating the winding shaft, so that the user is in the room to release safety protection when the mental state is poor, and the safety is better. The torsion spring is used for applying elastic force to the safety rope, when the safety rope needs to be wound, tension can be applied to the safety rope, and winding is easier.

The present invention discloses a production process of puncture-proof fabrics. The ultrahigh molecular weight polyethylene filament and high-tenacity polyester filament yarns are taken as raw materials, the performance difference of the ultrahigh molecular weight polyethylene filaments and the high-tenacity polyester filament yarns is analyzed to determine the specifications of the ultrahigh molecular weight polyethylene filaments and the high-tenacity polyester filament yarns and determine the yarn usage amount of the two, through the organization structure design of the fabrics, numbers ofpaths of the ultrahigh molecular weight polyethylene filaments are reasonably distributed, a weaving process employs a weft knitting mode for weaving, a coil structure is employed to perform advantagecomplementation of the two raw materials so as to solve the problem that the ultrahigh molecular weight polyethylene filaments are difficult to weave, the weaved fabrics are processed through adoption a after treatment process to produce a finished product. The novel puncture-proof fabrics by taking the ultrahigh molecular weight polyethylene filaments and the high-tenacity polyester filament yarns as the raw materials are good in breathability, wearing comfort, flexibility and economy.

The invention discloses a water flow sensor docking circuit. The leakage protector has a single-chip microcomputer output control, and also includes an isolation output control, a power input, a reverse isolation circuit, a charging current adjustment circuit, an optocoupler drive circuit, a pulse conversion circuit, a battery and a water flow sensor. ;The water flow sensor is electrically connected to the pulse conversion circuit, and the isolation output control is controlled by the optocoupler drive circuit; the output control of the single-chip microcomputer is controlled by the isolation output control; the optocoupler drive circuit is controlled by the pulse conversion circuit; power input, rectification and voltage stabilization circuit The reverse isolation isolation circuit and the charging current regulating circuit are connected in sequence, and the charging current regulating circuit supplies power for the battery, the pulse conversion circuit and the optocoupler driving circuit. When the water flow sensor of the present invention is working, the leakage protector will automatically trip for protection; otherwise, it will automatically power on and work, which has the ability to protect the water heater, making the use of the water heater safer.

The invention provides an active pre-tightening safety belt control system. A control board comprises a power circuit, a ship-chip microcomputer, a motor drive circuit, an electromagnetic clutch drive circuit, a sensor interface circuit, a communication serial port circuit, a BDM downloading circuit and an interface circuit. Signals of all early warning sensors are acquired, the safety level is determined through the logic judgment of a ship-chip microcomputer controller, and control commands under different safety levels are output according to different danger degrees, so that a motor is driven to control the reeling frequency of a safety belt reeling device and the tension value of a safety belt woven belt; and through different combination modes of the reeling frequency of the safety belt reeling device and the tension value of the safety belt woven belt, the corresponding safety level is determined, and it is guaranteed that reminding and protecting functions on a driver are achieved.

The present invention discloses an electric field sensitive type insulation material static performance test device and system and belongs to the technical field in which electric, electrochemical or magnetic methods are adopted to test and analyze materials. The test system comprises an electric field sensitive type insulation material static performance test device. The test system further comprises a high-voltage direct-current power source, a current limiting resistor, a first pneumatic time delay high-voltage switch K1, a high-voltage non-inductive capacitor, a second pneumatic time delay high-voltage switch K2, a sampling resistor, an oscilloscope, a third pneumatic time delay high-voltage switch K3 and a discharge resistor. According to the test system, capacitor charging and discharging design is utilized, and therefore, damage to a power source caused by the change of the performance of a tested insulation material can be avoided, and the power source can be protected; and the postposition discharging resistor in the test system can fully discharge the residual electric quantity of the capacitor at the end of testing, and the safety of operation can be ensured.

The invention discloses a balancing anti-explosion valve for a starting and stopping power supply. The balancing anti-explosion valve comprises a valve body, a 90-degree conversion base and a telescopic exhaust pipe; one end of the 90-degree conversion base is detachably connected with the valve body in a buckled mode, and the other end of the 90-degree conversion base is connected with the telescopic exhaust pipe through a clamping hoop in a fastened mode; the interior of the valve body is hollow, a ring of a groove is formed in the external circumference of the valve body, a seal ring is installed in the groove, and a balancing anti-explosion membrane is arranged in the valve body and connected with the valve body in a sealing mode; the 90-degree conversion base and the telescopic exhaust pipe are both arranged to be hollow in interior. The balancing anti-explosion valve is mainly applied to the 48-V starting and stopping power supply and has the advantages of being simple in structure, convenient to install, good in sealing effect, capable of achieving automatic telescopic adjusting, good in exhaust effect in an abnormal state, capable of effectively avoiding blasting accidents and the like.

The invention discloses a manhole cover preventing accidental explosions, and relates to the technical field of manhole covers. The manhole cover preventing the accidental explosions comprises a well ring and a cover body. A through hole is formed in the cover body, a sealing device is arranged at the bottom of the well ring or the cover body, a cavity is arranged in the sealing device, the through hole is communicated with the cavity, and water outlet holes are formed in the side wall of the sealing device. Compared with the prior art, the manhole cover has the advantages that the sealing device is arranged on the lower portion of the well ring or the cover body, so that cigarette butts and fireworks fall into the cavity of the sealing device rather than directly fall in pollution discharge pipes, and accordingly the explosions caused due to the fact that the cigarette butts and the fireworks fall into the pollution discharge pipes are effectively avoided. Besides, the water outlet holes are formed in the side wall of the sealing device, and normal use of the manhole cover is not affected.

The invention discloses an insufficient voltage activating device for a lithium battery and relates to the technical field of lithium battery charging equipment. The insufficient voltage activating device comprises a lithium battery charging management IC (integrated circuit) and an activating circuit, wherein the activating circuit comprises an MCU (micro control unit) and a current-limiting float charging circuit, wherein a control output pin I/O of the MCU is connected with the enabled pin EN of the lithium battery charging management IC, and a third analog quantity input pin AD3 of the MCU is connected with the lithium battery and used for detecting the voltage of the lithium battery; one end of the current-limiting float charging circuit is connected with a power Vin, the other end of the current-limiting float charging circuit is connected with the lithium battery, and a current control end used for controlling the magnitude of current outputted by the current-limiting float charging circuit is connected with an analog quantity output pin DA of the MCU. The insufficient voltage activating device solves the technical problem in the prior art that a lithium battery is inconvenient to activate in the insufficient voltage state. The insufficient voltage activating device can activate the lithium battery in the insufficient voltage state, has high safety and reliability, facilitates prolonging the service life of the lithium battery, and is low in price.

The invention provides a pallet with a buffering cushion. The pallet with the buffering cushion is characterized by comprising a material placing layer (1), a ground contact layer (2) and a buffering cushion block (3), wherein the buffering cushion block (3) is arranged between the material placing layer (1) and the ground contact layer (2); the material placing layer (1) is parallel to the ground contact layer (2); and the structure of the material placing layer (1) is consistent to that of the ground contact layer (2). The pallet with the buffering cushion is simple in structure; a forklift can carry a pallet rack from an optional surface, and the work efficiency is greatly improved; by a frictional gasket, the friction force generated between the pallet and the ground is large, the safety of a transferred product is improved, a limiting block is arranged on the material placing layer, a guiding effect can be achieved in a goods loading process, and the goods placed on the material placing layer are limited and are protected; the pallet is made of wood, the process is simple, the cost is low, a frame structure is formed by ribs, and materials are saved effectively; and the mechanical strength is high, and the safety of the goods can be guaranteed well.

The invention provides a method for arranging a silicon dioxide coating on the surface of a solar photovoltaic back plate and the solar photovoltaic back plate prepared through the method. The method comprises the following steps: coating one or two surfaces of the solar photovoltaic back plate with a layer of polysilazane solution; then baking the solar photovoltaic back plate for 2-3 hours in an oven of which the relative humidity is 85 percent and the temperature is 85 DEG C; then baking the solar photovoltaic back plate for 1-2 hours at the temperature of 120-150 DEG C, so that the polysilazane solution is converted into the silicon dioxide coating, and the solar photovoltaic back plate with the silicon dioxide coating is obtained. By arranging the silicon dioxide coating on an outer-layer fluorine film, water vapor can be more effectively prevented from penetrating through the outer-layer fluorine film, so that an inner-layer PET (Polyethylene Terephthalate) film and a solar photovoltaic cell are protected from being slightly attacked by the water vapor, the aging time of the PET film is effectively prolonged, the solar photovoltaic cell is better protected, and the efficiency and the long-time use reliability of the solar photovoltaic cell are facilitated.

The invention discloses an intelligent thickness tester for optical glass production, and particularly discloses an elastic contact measuring device for optical glasses. The action of protecting the glasses is achieved. According to a specific structure of the scheme, a drive motor is fixedly connected to a flange above a top plate, and the drive motor is a servo motor, wherein the output end of the servo motor can forwardly and reversely rotate; the output end of the drive motor is connected with a screw rod, the screw rod penetrates through the top plate and is rotatably connected with a bearing of the screw rod, the bearing at the lower end of the screw rod is rotatably connected with a base, and the drive motor is in wire connection with an electric supply and a switch; and a thread sleeve is in thread connection with the screw rod, a first roller is rotatably connected to the inner side of the thread sleeve, the first roller is attached to the surface of a supporting plate, a cross beam is fixedly connected to the other side of the thread sleeve, the end part of the cross beam is fixedly connected with a clamping ruler, an elastic measuring device is arranged in the middle ofthe cross beam, and a tray is arranged on the lower part of the elastic measuring device.

The invention relates to the field of cable processing, in particular to multifunctional cable cutting equipment which comprises a base and a vertical plate and further comprises a controller, an unwinding mechanism, a straightening mechanism, a cleaning mechanism and a downward cutting mechanism. The unwinding mechanism comprises an unwinding roller and a driving assembly, the cleaning mechanism comprises a brush and a rotating assembly, and the rotating assembly is arranged at the top of the base. The brush is rotatably arranged at the top of the base, the downward cutting mechanism comprises a cutter, a stamping block and a sliding assembly, the sliding assembly is arranged at the top of the base, the stamping block is arranged above the cutter, the cutter is arranged below the stamping block in a sliding mode, and the driving assembly is electrically connected with the controller. According to the multifunctional cable cutting equipment, the cutting efficiency is high, fixed-length cutting can be achieved, the fixed length can be adjusted, and meanwhile the effect of protecting the cutter can be achieved.

The invention relates to a researching device and particularly relates to a swing type soil hardness researching device. The swing type soil hardness researching device has the functions of synchronously withdrawing and releasing a rope and testing the soil hardness through automatically hammering in a swing manner. According to the technical scheme, the swing type soil hardness researching devicecomprises a vehicle frame, a contact switch, a first mounting plate, a motor, a cam and the like, wherein a first opening is formed in the right part of the vehicle frame, a first through hole is formed in the left part of the vehicle frame, the contact switch is mounted in the vehicle in the right side of the first opening, the first mounting plate is fixedly connected to the right side of the upper part of the vehicle frame, and the motor is mounted on the first mounting plate. The device has the functions of synchronously withdrawing and releasing the rope and testing the soil hardness through automatically hammering in a swing manner, the function of calculating the soil hardness through a ruler is realized, and the disadvantages that the time and the labor are wasted during manual striking, arms of a work are numbed during the hammering of stone, and the hammering difficulty is large are solved; and the device has the characteristics of convenience in use, safety in use simplicity in operation, low manufacturing cost and the like.

The invention discloses a preparation method of a protective coating material for a zirconium alloy cladding pipe. Specifically, the preparation method comprises the following steps: mixing a main material for a protective coating, water and polyvinyl alcohol to obtain a mixed material; carrying out two types of post-treatment on the mixed material to obtain an agglomerated powdery protective coating raw material for the zirconium alloy cladding pipe or a suspension-shaped protective coating raw material for the zirconium alloy cladding pipe; taking the zirconium alloy cladding pipe and carrying out sand spraying treatment on an outer wall of the zirconium alloy cladding pipe; spraying the agglomerated powdery protective coating raw material for the zirconium alloy cladding pipe or the suspension-shaped protective coating raw material for the zirconium alloy cladding pipe on the outer wall of the zirconium alloy cladding pipe subjected to blast sanding treatment by adopting a thermal spraying technology, so as to form the protective coating material for the zirconium alloy cladding pipe on the outer wall of the zirconium alloy cladding pipe. According to the preparation method of the protective coating material for the zirconium alloy cladding pipe, provided by the invention, a very good protective coating is formed on the outer wall of the zirconium alloy cladding pipe, so that the anti-oxidization performance of the zirconium alloy cladding pipe is improved.

The invention discloses a truss rebar protecting jacket for a PC component. The truss rebar protecting jacket for the PC component comprises two clamping plates. A handheld end and a clamping end are arranged at the two ends of each clamping plate, a hinge joint portion is further arranged between the handheld end and the clamping end of each clamping plate, the hinge joint portions of the two clamping plates are connected with each other, and an elastic device which is used for driving the two clamping ends to be extruded with each other is further arranged between the two clamping plates. A clamping assembly is further arranged at each clamping end and comprises a rubber layer and a brush. The rubber layers and the brushes are connected to the end portions of the clamping ends and detachably connected to the inner surfaces and the outer surfaces of the clamping ends correspondingly, and the length of each brush is larger than the width of the corresponding rubber layer. The truss rebar protecting jacket for the PC component can fulfill a certain protection function on an upper main rebar, and a reasonable solution is provided for protection of the upper main rebar in truss rebars in the prior art. When string rebars are clamped, upward slide can be avoided, and the rebars can also be prevented from being inclined towards the horizontal plane in the clamping process.

The invention provides a safety guardrail for an elevator car roof. The safety guardrail comprises a guardrail body, wherein the guardrail body comprises a rear guardrail as well as a left guardrail and a right guardrail which are arranged at the two sides of the rear guardrail; the rear guardrail comprises a first cross strut and a second cross strut; one end of the first cross strut and one end of the second cross strut, which are at the same side, are simultaneously connected to a first vertical strut; the other end of the first cross stud and the other end of the second cross strut, which are at the same side, are simultaneously connected to a second vertical strut; the left guardrail comprises a third cross strut and a fourth cross strut; one end of the third cross strut and one end of the fourth cross strut, which are at the same side, are simultaneously connected to the second vertical strut; the other end of the third cross strut and the other end of the fourth cross strut, which are at the same side, are simultaneously connected to a third vertical strut; the right guardrail comprises a fifth cross strut and a sixth cross strut which are arranged in parallel vertically; one end of the fifth cross strut and one end of the sixth cross strut, which are at the same side, are simultaneously connected to the first vertical strut, and the other end of the fifth cross strut and the other end of the sixth cross strut, which are at the same side, are simultaneously connected to a fourth vertical strut; and the guardrail is a structure which is in the shape of U, U with opening facing rightwards or C. A supporting frame is telescopic pole structure. The safety guardrail is stable and reliable in structure, can regulate mounting height, on the supporting frame, of the guardrail body, and is strong in adaptation.

The invention discloses an aluminum electrolytic capacitor with the function of preventing an electrolyte from being volatilized, and relates to the technical field of capacitors. The aluminum electrolytic capacitor comprises a shell, a rubber plug is inserted in an opening in the top of the shell, and fans are fixedly installed at both sides of the bottom of the rubber plug; coolers are fixedly connected to the middles of the inner side walls of the shell, grooves are formed in the top of the outer side of the shell, inner lining cylinders are fixedly installed between the inner bottom wall of the shell and the outer bottom walls of the grooves, and an explosion-proof valve step is fixedly installed on the inner bottom wall of the shell. By means of the aluminum electrolytic capacitor with the function of preventing the electrolyte from being volatilized, convenience can be provided for eliminating the phenomenon that the electrolyte is volatilized due to high temperature, flow of airflow in the shell is facilitated, and formation of thermal airflow circulation can be facilitated; high voltage inside the capacitor is lowered, convenience can be provided for achieving the functionof protecting a core inside the capacitor, internal damage due to vibration is avoided, the safety coefficient is high, and bad influences brought by heating can be reduced.

The invention relates to the field of switch cabinets, in particular to a low-voltage draw-out switch cabinet. The cabinet comprises a cabinet body, the cabinet body comprises a control panel, a plurality of drawer units and a warning lamp. The control panel is arranged on the side wall of the side, facing a user, of the cabinet body. The warning lamp is arranged on the side wall of the top of thecabinet body; each drawer unit comprises a drawer and a drawer sliding cavity; the drawer is inserted into the drawer sliding cavity in a sliding manner; the side wall of the front side of each drawer is rotationally connected with a locking mechanism used for preventing the drawer from sliding out of the corresponding drawer sliding cavity, an elastic reset device used for controlling the warning lamp to be turned on and off is arranged on the inner wall of the upper end of each drawer sliding cavity, and two vacuum circuit breakers are symmetrically arranged on the inner wall of the rear side of each drawer sliding cavity. According to the draw-out type switch cabinet, the sequence of disconnection or connection of the circuit breaker and the isolation switch in the loop can be strictlyguaranteed in the power-on and power-off process, and then potential safety hazards existing in the power-on and power-off process of the switch cabinet are effectively eliminated.

The invention discloses a metal material detection clamp. The clamp comprises a leveling cutting tool, a cross bar, a cylinder and a base. Both sides of the top end of the base are provided with supporting rods, the bottom end inside the base is provided with a damping layer, the cross bar is arranged between tops of the supporting rods, one end of the top of the cross bar is provided with a shell, the top in the shell is provided with a hydraulic telescopic rod, the bottom end of the hydraulic telescopic rod is provided with a first motor, the bottom end of the first motor is provided with the leveling cutting tool, the other end of the top of the cross bar is provided with the cylinder and the bottom end of the cylinder is provided with a telescopic rod. Through scale lines, the whole device has a metering function. Through use of the damping layer, a gravity test on a metal material proves that the clamp can be protected and a service life of the clamp is prolonged.

The present invention pertains to the field of chemical industry, wherein a prefilming agent for petroleum pipelines is disclosed, which comprises phosphates and zinc sulfate, wherein the phosphate can be sodium polyphosphate. The prefilming agent can form a compact and stable film onto the surface of pipe-lines.