65results about How to "Safe working condition" patented technology

The invention discloses a synchronous control device of double winches, wherein a hook is connected with the double winches by a hook component, the synchronous control device comprises an angle signal acquisition part and a controller, wherein the angle signal acquisition part is used for acquiring the gesture angle of a frame of the hook component, the controller outputs a synchronous control signal to a drive mechanism / drive mechanisms of one or both of the double winches according to the gesture angle of the frame of the hook component, so as to control the gesture maintaining level of the frame of the hook component. According to the synchronous control device of the double winches, the frame of the hook component is kept at a horizontal gesture to improve the working stability of the whole machine. On the basis, the invention further provides a synchronous control method of the double winches and a crane applying the synchronous control device.

The invention relates to the technical field of engineering construction, in particular to a tower crane construction technology used for a super high-rise building steel structure. The tower crane construction technology used for the super high-rise building steel structure comprises the following steps: a) carrying out tower crane model selection and tower crane plane arrangement; b) carrying out tower crane climbing analysis which comprises the structure setting of a tower crane climbing system and climbing elevation determination; c) carrying out tower crane climbing; d) calculating the internal force and the displacement of a core tube shear wall structure which bears tower crane load and creeping formwork load. Compared with the prior art, the tower crane construction technology has the advantages of reasonable process design and high actionability; according to repeated experiments, the tower crane construction technology is strictly executed according to a working condition set in a scheme, and the deformation of the core tube shear wall is within an allowable range of a standard through multiple times of practical observation. Practice proves that the function configuration and the plane arrangement of the construction engineering of a high-rise steel structure and a large tower crane are reasonable; the design of a climbing system and a climbing technology are advanced and proper; calculation relevant to the tower crane load is correct, and the whole working state of the tower crane is safe and reliable.

The invention relates to a vessel having an elongated shape, and being moored to the sea bed in a substantially fixed orientation. The vessel comprises at least along its longitudinal sides, near keel level, two transverse skirts having such a width that the natural roll period of the vessel is above a predetermined period, the natural roll period of the vessel without the skirts being below said predetermined period.

The present invention relates to a small power electro-magnetism decelerate pressure-limiting scenery complementary power generation system, which adds a electro-magnetism backset decelerator on the basis of original power generation system, the decelerator is coaxially set the axis of the rotor of a wind power generator, and connects with a intelligent controller through a on-off circuit. The present invention adds a set of electro-magnetism backset decelerator on the basis of the power generation system, and realizes automatic deceleration through automatic control of a intelligent controller when a blower fan over speeds, or automatic pressure limitation when a accumulator cell over charges, to make rotate speed of a power generator and pressure of the accumulator cell never beyond the setting value whatever conditions the wind motor in, so as to keep it in secure and dependable working status always.

The invention discloses a marine detachable electric heater device. The device comprises a casing 1, detachable heating pipes 2 and a control part 3, wherein the detachable heating pipes 2 are arranged inside the casing 1; a thermal resistance temperature sensor 4 for temperature control and a temperature controller 5 for high-temperature protection are arranged in the control part 3; and detachable electric heating elements are mounted in the detachable heating pipes 2 and are electrically connected with the control part 3. In design of the heating elements, the electric heating elements are used as straight-through pipe type heating pipes and are different from conventional U-shaped heating pipes. In the design of the heating elements, each heating element can be separately detached and is convenient to use and maintain, and maintenance and change costs are reduced. On occasions where heating is required and maintenance is difficult, the relatively good, stable and safe working state can be obtained, and the device is convenient to maintain.

The invention provides a fuel cell air system decoupling control method. The method comprises the following steps of determining corresponding target air pressure and target air flow according to a working point of the fuel cell, checking the corresponding calibration tables through the target air pressure and the target air flow, and acquiring the feed-forward throttle valve opening degree and the feed-forward air compressor rotating speed, acquiring real-time air in-pile pressure and air in-pile flow, calculating the difference value between the target air pressure and the air in-pile pressure, conducting PID control on the pressure difference, and acquiring a throttle valve opening adjustment value, checking a calibration table for correcting the corresponding opening degree to the rotating speed according to the opening degree of the feed-forward throttle valve and the opening degree adjustment value of the throttle valve to obtain a rotating speed correction value of the air compressor, calculating the difference value between the target air flow and the air in-pile flow, conducting PID control on the flow difference, and acquiring the rotating speed adjustment value of the air compressor, checking a calibration table for correcting the opening degree by the corresponding rotating speed according to the feedforward air compressor rotating speed and the air compressor rotating speed adjusting value to obtain a throttle valve opening degree correction value, summing to obtain the final opening degree of the throttle valve, and summing to obtain the final rotating speed of the air compressor. The method is simple and easy to implement, high in practicability and high in accuracy.

The invention relates to an intelligent numerical-control engraving machine controller which comprises a power section, a main-control microprocessor and a plurality of motor driving modules. The power section powers circuits of all parts, the output end of the main-control microprocessor is connected with the motor driving modules which are provided with output ports directly connected with motors, the main-control microprocessor is connected with data transmission interface modules and a display screen, numerical-control code files are transmitted to the main-control microprocessor through the data transmission interface modules, the main-control microprocessor is provided with an instruction execution module which is capable of reading the numerical-control code files inputted externally and reading, analyzing, calculating, judging and converting instructions and parameters in the numerical-control code files and displaying relevant information on the display, and codes capable of being directly executed on a numerical-control engraving machine are generated. By the arrangement, data can be automatically processed, work can be automatically arranged, cost is relatively low, and safety is higher.

The invention discloses a heat pump drying device and a using method thereof. The heat pump drying device comprises a heat pump circulating sub system and a drying circulating sub system; a compressor, a heat adjusting device, a condenser, a throttling part, an evaporator and a pre-cooling heat exchanger are connected through pipelines to form the heat pump circulating sub system; the drying circulating sub system comprises a drying chamber, air passages and a drying draught fan; the drying draught fan, the pre-cooling heat exchanger, the evaporator and the condenser are mounted in the air passages, or air inlets and air outlets of the drying draught fan, the pre-cooling heat exchanger, the evaporator and the condenser are connected with the front and rear air passages; and a temperature sensor and a humidity sensor are mounted in the drying chamber or the air passage adjacent to the drying chamber. According to the heat pump drying device and the using method thereof, the problems that as for an existing drying device, functions are few, the drying application range is small, energy consumption is large, damage is large, and emission is large are solved, the functional multiformity and efficiency of the drying system are achieved, the application range is widened, damage of dried objects and emitting of waste gas are reduced, and the flexibility and reliability of the heat pump system are improved.

The invention discloses a connector and a contactor assembly. The connector is provided with a control circuit, and the control circuit is connected to a coil in a contactor and is used for controlling operations of the contactor; the control circuit includes a work control circuit for supplying work current to the contactor; the work control circuit includes a PWM power saving circuit which is connected to the contactor; when the contactor powers on, the PWM power saving circuit provides a signal with a preset duty ratio to the contactor (20); after the contactor (20) powers on, the PWM power saving circuit maintains that the PWM power saving circuit provides a signal with a small duty ratio to the contactor during the condition of power-on of the contactor (20) to reduce the power consumption. According to the connector and the contactor assembly, the PWM power saving circuit is integrated into the connector, so that the average drive current of the contactor is reduced, and the size of the contactor is reduced.

The invention provides a method and a structure for inter-arm positioning of a crane jib, the crane jib and a crane. The method for the inter-arm positioning of the crane jib comprises the following steps of: determining a plurality of operating positions of inner knuckle arms on outer knuckle arms; measuring the arm inner widths of the inner knuckle arms at the plurality of operating positions on the outer knuckle arms and the symmetry of the inner knuckle arms relative to the centre line of the outer knuckle arms; and determining the thickness and the shape of a positioning piece according to the arm inner widths and the symmetry. By the method for the inter-arm positioning of the crane jib, reciprocating correction of the inner knuckle arms and the outer knuckle arms is eliminated, theproduction cost is effectively lowered, and the production efficiency is improve. The structure for the inter-arm positioning of the crane jib ensures the reliable matching of the inner knuckle arms and the outer knuckle arms at the operating positions. By the crane jib with the structure for the inter-arm positioning of the crane jib, the operation stability is ensured while the production cost is lowered and the production efficiency is improved. The crane with the crane jib can acquire a more reliable and safer operating state.

The invention discloses an electric vehicle lighting device based on wind power generation. The electric vehicle lighting device based on wind power generation comprises an electric vehicle headstockshell and shielding outer edges; a vehicle lamp is installed on the front side of the electric vehicle headstock shell; a protective ring is fixed to the outer side of the vehicle lamp; ventilation openings are formed in the lower sides of the shielding outer edges; ventilation dustproof nets are fixed in the middles of the ventilation openings; power generation shells are connected to the inner sides of the ventilation openings and internally provided with rotary rods; power generators are connected to the rear ends of the rotary rods; connection bases are arranged on the rear sides of the power generators; the outer sides of the rotary rods are connected with fixed rods through rotary bearings; the power generation shells are fixed to the two ends of the fixed rods; and exhaust outlets are formed in the junction positions of the power generation shells and the connection bases. The electric vehicle lighting device based on wind power generation is provided with the rotary rods, the power generators and wind blades, wind energy can be used for generating power, then the needed energy source is provided for the vehicle lamp, power consumption of an electric vehicle is reduced, andthe wind energy utilization rate of the electric vehicle is improved.

The invention discloses a locker for a mobile radar antenna pedestal. The locker comprises a base, a taper pin boss, a shell, a first approach switch, a second approach switch, a cam mechanism, a knobdevice and a button device, wherein the base and the taper pin boss are a main body structure of the locker; the base and the taper pin boss are oppositely arranged; the shell is arranged on the base; the cam mechanism is arranged in the base and the shell; the knob device is arranged on a cam; the button device is connected to the inner side surface of a knob through a guide threaded pin; the cam is fixedly connected with a taper pin through a connecting rod and an adapter; the knob device and the cam synchronously rotate and drive expansion of the taper pin, thereby completing locking and unlocking actions between the base and the taper pin boss; the first approach switch is arranged at one side of the base; the second approach switch is arranged at one side of the taper pin boss; and alocking in-place signal and an unlocking in-place signal of the locker are provided through on / off of the approach switches. The locker is high in reliability and simple in operation.

The invention discloses an intelligent battery connector. The intelligent battery connector comprises a needle-shaped connector, an electromagnet surrounding the outer side of the needle-shaped connector, a bidirectional connector, a permanent magnet surrounding the outer side of the bidirectional connector, and a lead wire, wherein the needle-shaped connector is connected to two electrodes of each battery in a battery pack; the bidirectional connector is provided with two connecting points; one side of the bidirectional connector is connected with a rear battery in two adjacent batteries or the other side of the bidirectional connector is connected with a next-stage battery; the electromagnet comprises a current reversal apparatus; the current reversal apparatus is controlled by a battery management system of a battery system; and a current direction is changed through the current reversal apparatus to change an electrode of the electromagnet. According to the intelligent battery connector, bad batteries connected in series can be disconnected according to a detection result of the battery management system to the batteries, so that the whole battery pack is ensured to be in a safe working state.

The invention relates to a manufacturing method of a heat exchanger tube and a heat exchanger device; the heat exchanger device comprises a shell (10) and a heat exchanger tube (20); the heat exchanger tube (20) is made of non-ferrous metals, the surface of the heat exchange area (21) of the heat exchanger tube (20) is provided with raised heat radiation fins (23), the outer surface of the heat exchanger tube (20) is covered with a heat conductive insulation thin layer (30) made of inorganic materials. By adopting the technical proposal, the invention improves the traditional heating elements and heating devices, has stable and safe operating condition, prolongs the service life of heating devices, reduces production cost and application cost and enhances heating efficiency by enlarging heat radiating area; the technology can be widely applied to the industries like petroleum, chemical engineering, medicine, food, textile, printing and dyeing, rubber processing, etc.

The invention discloses a metal abrasive dust briquetting method. According to the method, briquetting treatment is conducted on metal abrasive dust through a metal abrasive dust briquetting treatment device provided with a hydraulic system and a storage bin. Through the method, abrasive dust can be briquetted, the size of the metal abrasive dust is greatly decreased, liquid in the abrasive dust can be effectively separated, and the liquid content of the abrasive dust is greatly decreased, and abrasive dust transport and retreatment are facilitated. In the main briquetting process of the method, the extrusion speed is gradually decreased along with increasing of the pressure of hydraulic oil, and the abrasive dust can be prevented from being injected.

The invention relates to a constant power control method based on a proportioning pump driven by a medium voltage motor. The constant power control method includes the following steps: (1) self inspection of a hydraulic forging press is carried out; (2) the step (3) is executed if a diagnosis result of a control module is normal, and an alarm signal is given out and the step (1) is repeatedly executed if the diagnosis result of the control module is abnormal; (3) the medium voltage motor of the hydraulic forging press drives the proportioning pump to work, and the proportioning pump changes an opening of a valve core through an amplification plate according to process motion so that different flows can be output to guarantee the running speed and frequency of a sliding block; and (4) the hydraulic forging press enters a workpiece pressing motion stage, and the control module collects pressure information of the sliding block through a pressure sensor, so that the flow of the proportioning pump is controlled, and the pressure of the sliding block continuously rises and the speed of the sliding block is constant in the initial stage. When the power reaches a rated value of the medium voltage motor, the hydraulic forging press enters constant power closed-loop control, the pressure of the sliding block continuously rises, and the speed of the sliding block is decreased continuously, so that the rated power value of the medium voltage motor is guaranteed, and the workpiece pressing molding motion is completed.

The invention discloses a contactor, a contactor assembly and a control circuit. The contactor comprises a switching mechanism, an iron core and an iron core position measurement circuit, wherein the iron core position measurement circuit comprises an excitation signal generating circuit and a sensing circuit; the sensing circuit judges the position of the iron core according to different inductance values; the control circuit is used for controlling an operation of the contactor; the contactor comprises the switching mechanism and the iron core; a coil surrounds the iron core to drive the iron core to carry out a back-and-forth movement, so as to connect or disconnect a work loop; and the control circuit comprises a work control circuit, the iron core position measurement circuit, the controller and the like. According to the control circuit disclosed by the invention, the position of the iron core is measured by measuring the variation of inductances by the characteristic that the coil generates different inductances due to different positions of the iron core in the coil.

The invention discloses an electric auxiliary heating system for an old-fashioned air conditioner. The electric auxiliary heating system comprises a first relay, a second relay, a temperature limiter, an electric auxiliary heating part, a heat blown fuse, reversing valve current, inner draught fan current and other components. A hot wire is connected with the input end of the first relay. The control end of the first relay is connected with the reversing valve current. The output end of the first relay is connected with the input end of the second relay. The control end of the second relay is connected with the inner draught fan current. The output end of the second relay is connected with one end of the temperature limiter, and the other end of the temperature limiter is connected with one end of the electric auxiliary heating part. The other end of the electric auxiliary heating part is connected with one end of the heat blown fuse. The other end of the heat blown fuse is connected with a zero wire. The electric auxiliary heating system has the effects of low power consumption, high safety and low cost. The invention further discloses an electric auxiliary heating control method and the air conditioner, and potential safety hazards caused by overheat of the electric auxiliary heating part 4 can be effectively prevented through the temperature limiter and the heat blown fuse.

The invention discloses a continuous bleed air system based on a turbojet engine. The bleed air system at least includes a gas collecting ring, and the gas collecting ring is sleeved on the outside of the pressure stabilizing section of the turbojet engine, and the pressure stabilizing section A number of air-introduction windows are uniformly arranged on the side wall between the gas-collecting ring; two air-introducing units for leading out compressed gas are arranged on the gas-collecting ring, and the air-introducing units include The bleed air pipe on the side wall of the gas collecting ring, the bleed air mass flow measuring equipment and the bleed air mass flow control equipment arranged in the bleed air pipe. In the present invention, by modifying the engine pressure stabilizing section, adding gas collecting rings, temperature and pressure sensors, mass flow measurement and control equipment, and engine exhaust temperature detection equipment, on the premise of ensuring the safe working state of the engine, it continuously provides controllable compressed gas. The bleed air system is small in size, low in cost, does not need an additional power device, and is convenient to be integrated inside the aircraft.

The invention discloses a building cutting machine capable of conducting conversion cutting on the wall surface and the ground. The building cutting machine comprises a main handle and a protection shell. A cutting blade is mounted on the inner side of the protection shell, and the outer side of the protection shell is provided with a scale line, a positioning plate and sliding grooves; the positioning plate is arranged on the sliding grooves, and the scale line is arranged in the middle of the positioning plate; a water-spraying electromagnetic valve is fixed to the upper side of the protection shell, and the outer side of the water-spraying electromagnetic valve is connected with a water-guiding hose; and a main moving rod and an auxiliary moving rod are connected through a connecting bottom plate, and fastening bolts are mounted on the connecting bottom plate. According to the building cutting machine capable of conducting conversion cutting on the wall surface and the ground, corresponding adjusting work can be conducted on different working faces of a building, and accordingly, cutting work on the different working faces of the building is completed; and the size of cutting work can further be controlled effectively in the cutting process, and thus the cutting work error of the device is reduced effectively.

The invention relates to a strong and weak current comprehensive distribution box. The strong power distribution room and the weak power distribution room which are isolated from each other are arranged in the cavity of the box body. The box door is composed of an isolated inner door and a visible outer door. Mirror frame type, the left and right vertical frame plates and the upper and lower vertical frame plates of the box shell assembly are provided with knock-out holes for incoming and outgoing lines, the rear floor of the strong power distribution room is equipped with installation guide rails for strong power distribution facilities, and the rear floor of the weak power distribution room is set There are installation brackets for multimedia signal modules, and there are extension holes for operating functional parts of power distribution facilities on the door of the strong power distribution room. The incoming and outgoing lines of all power distribution facilities enter and exit through the knock-out holes, and can be monitored through the door The indoor setting content and working conditions are reasonable and scientific in structure, integrating strong and weak power distribution functions, which is convenient for the setting of multimedia weak current supporting facilities and the reasonable layout of signal lines, which is conducive to standardizing outdoor incoming lines and indoor wiring, and improving indoor The overall decoration effect effectively overcomes the messy wiring of weak current facilities or the arrangement of multiple boxes in the prior art, which is not coordinated with the interior decoration, and has strong practicability and market application prospects.

The invention discloses a mechanical clamping claw capable of extracting and preventing objects different in size from falling. The mechanical clamping claw includes a connecting rod, first lining plates and fixed pulleys; clamping claw plates are installed on the inner side of a device body, and protective shields are fixed to the outer sides of the clamping claw plates; a limiting block is arranged on the lower side of the interior of the device body, a second motor is fixed to the inner side of each protective shield, and a lining plate housing is fixed to the outer side of each second motor; a second lining plate is arranged on the inner side of each lining plate housing, the outer side of each second lining plate is connected with the corresponding second motor through a third gear, the two sides of each second lining plate are connected with the corresponding lining plate housing through movable pulleys, and the first lining plates are connected to the outer sides of the fixed pulleys. Since the mechanical clamping claw capable of extracting and preventing the objects different in size from falling is provided with the first lining plates, the use safety performance of the whole clamping claw is improved; through arrangement of the second lining plates and lining plate teeth, the use efficiency of the clamping claw is improved, and the use functions of the clamping claw are increased.

The present invention proposes an equivalent adjustment circuit for gate drive resistance of an IGBT module, comprising an IGBT module, an MCU, a first optocoupler and a drive module, a first resistor is connected between the MCU and the first optocoupler, and the drive module and the IGBT module A gate drive resistor is connected between them, and there is an integral circuit between the first optocoupler and the drive module. The integral circuit includes the equivalent resistance of the integral circuit and the first capacitor. By changing the resistance value of the equivalent resistance of the integral circuit, the integral circuit can be adjusted The time constant of the gate drive resistor can be adjusted equivalently. The equivalent adjustment circuit of the gate drive resistance of the IGBT module of the present invention can adjust the equivalent resistance of the gate drive resistance, and can drive IGBT modules with different powers without manually changing the gate drive resistance, thereby optimizing the working state of the IGBT modules.

The invention discloses an artificial intelligence monitoring device capable of monitoring a plurality of sensors. The device comprises a supporting main body column, an artificial intelligence monitoring main body, a driving motor, a wire protection drag chain, an electrified wire and an electronic control component, wherein a monitoring fixing seat is mounted on the outer side of the middle of the supporting main body column; the artificial intelligence monitoring main body is fixedly arranged on the outer side of the monitoring fixing seat; a movable protection plate is arranged at the lower end of the supporting main body column, the upper side of the movable protection plate is connected with the supporting main body column through fixing studs, the lower end of an electrified wire isconnected with an electronic control component, and the electronic control component is fixed in the lower end of the supporting main body column. According to the artificial intelligence monitoringdevice capable of monitoring the plurality of sensors, the monitoring fixing seat can freely move up and down on the supporting main body column, so that the overall maintenance work of an artificialintelligence monitoring main body on the monitoring fixing seat can be quickly completed, and the normal working efficiency of the monitoring device is effectively improved.

The invention discloses a vehicle fault handling method of hydrogen energy vehicles. The method includes the following steps: S1, performing fault detection on components whose functions can be replaced and the components whose functions cannot be replaced; S2, sending component fault grades to a vehicle controller; S3, calculating and processing each component according to the fault grades; S4, sending the component fault grades to the vehicle controller; S5, calculating vehicle fault grades; and S6, performing vehicle fault handling. The method can detect a fuel cell and a hydrogen storage system while detecting a motor controller, a distribution box and other products, and an auxiliary power supply is also considered, so that a vehicle can be in a safe and reliable working state; and the vehicle components can be divided into products with replaceable functions and products with non-replaceable functions according to the functions, and fault detection can be respectively performed on the products with replaceable functions and the products with non-replaceable functions.

The invention discloses a railway power transmission device which mainly solves the problems that in existing railway power transmission, small current signal detection cost is high, and sensitivity adjustment is inconvenient. The device comprises a feeder circuit breaker arranged in a traction substation for railway power supply, a relay protection device and a power transmission line which are connected with the feeder circuit breaker, a power taking coil for taking power from the power transmission line through a traction network power supply arm, a protection circuit, a rectification circuit, a voltage conversion circuit and a power output circuit which are sequentially connected with the power taking coil, and a small current signal generation detection circuit connected with the protection circuit. By means of the design, the power transmission state of the power transmission device is judged by analyzing the small current signals, what is guaranteed is that the power transmission device is in a safe working state, and the detection sensitivity of the small current signal generation detection circuit can be conveniently adjusted through adjustment of the potentiometer. Therefore, popularization and application are facilitated.

A spray cooling system for a high-power lithium ion power battery pack comprises a spray system, a condensation system and a data acquisition system, wherein the spray system comprises a compressor, a condenser, a liquid storage tank for storing a refrigerant, a filter, a throttle valve, a spray cavity for placing a power battery and a gas-liquid separator which are sequentially connected through pipelines; a spraying pipe is arranged in the spraying cavity; the condensation system comprises a thermostatic bath in loop connection with the condenser, and a water pump and a flow meter are arranged in the loop; and the data acquisition system comprises temperature sensors arranged in the refrigerant circulation channel and the water circulation channel, and a pressure sensor and a data acquisition instrument which are arranged in the refrigerant circulation channel. Phase change spray of the refrigerant can be used for cooling the power battery, the surface heat of the power battery is absorbed through phase change latent heat of the refrigerant so as to reduce the surface temperature of the battery, and the method is high in heat dissipation capacity and can meet the thermal management requirements of high-power lithium ion power batteries with high temperature, quick charge and the like.

The invention relates to a current overload protecting device for a boiler overhauling platform. The current overload protecting device comprises a current overload protecting device body, a man-machine interface, a controller, a weight detecting module, an alert prompting module and a cable line detecting module, wherein the man-machine interface and the alert prompting module are separately arranged on two side surfaces of the current overload protecting device body; the controller is arranged in the current overload protecting device body; the weight detecting module is arranged at a joining suspension point of a steel wire rope of a winch and a boiler overhauling platform; and the man-machine interface, the weight detecting module, the alert prompting module, the winch and the cable line detecting module are separately connected with the controller. Through the adoption of the current overload protecting device disclosed by the invention, the problem of operation safety of the overhauling platform under the current overload condition is solved; the load and the pulling force of the steel wire rope at the suspension point are intelligently monitored in real time and synchronously displayed, intelligent detecting and alerting of the broken circuit and the short circuit of a cable are realized,, and three kinds of protecting barriers of overloading pre-alerting, overloading alerting and overloading hyper-alerting of the overhauling platform are realized; and the personal safety of an operator is guaranteed, and the overhauling efficiency is improved.