188results about How to "Won't add weight" patented technology

Provided is a mounting structure for a fuel cell system capable of enduring a collision from the side face of a fuel cell vehicle. The fuel cell system comprises a fuel cell unit (200) for housing a fuel cell, and a protecting structure (220) having a mounting face for mounting the fuel cell unit (200). The protecting structure (220) includes sloped frames (234 and 235) sloped with respect to that mounting face, at positions facing at least one side of the fuel cell unit (200). The protecting structure (220) has the sloped frames (234 and 235) as the structures for bearing the collision impact from the sides. As a result, the protection of the entire height of the fuel cell unit (200) is realized by the lightest structure.

The invention relates to a graphite-paraffin composite phase-changing and energy-storing concrete and a preparation method thereof. In the phase-changing and energy-storing concrete, cement, water, sand, gravels and a water reducer are used as substrates, and paraffin phase-changing materials, graphite with enhanced heat conducting function, and fiber reinforced materials with enhanced mechanical strength are also comprised. The preparation method comprise the steps of: firstly, mixing the paraffin and the graphite, heating until the paraffin totally melts, and continuously stirring to uniformly mix the paraffin and the graphite into a viscous form; putting the sand and the gravels into a stirrer, then putting fibers and the cement, carrying out dry mixing, adding the water and the water reducer subsequently, and rapidly stirring to reach a uniform state; and then putting the molten paraffin-graphite viscose mixture into the obtained concrete mixture, and uniformly mixing. Because the graphite is added into the paraffin to be used as an additive, the coefficient of heat conductivity of the phase-changing and energy-storing concrete is greatly enhanced, so that the heat storing and releasing efficiency of an energy-storing material is enhanced.

The invention discloses a protective sealing door for an underground refuge chamber. The protective sealing door comprises a door frame and a door plate, wherein the door plate is arranged on the door frame through a rotation shaft; a locking mechanism for locking the door plate on the door frame is arranged on the door plate, a plurality of first reinforcing ribs for reinforcing the strength of the door plate are arranged in the door plate; heat-insulating materials, namely aerogel heat-insulating felts are filled among the reinforcing ribs; at least two annular sealing rings, namely flame-resisting sealing rings are arranged at the joint of the door plate and the door frame; and the periphery of the door plate is locked by the locking mechanism. According to the protective sealing door, the aerogel heat-insulating felts which can bear the temperature of 1,400 DEG C to the maximum are filled in the door plate, so that the door plate can resist high temperature generated during explosion, and the high temperature is insulated out of the refuge chamber; at least two sealing rings which are made of flame-resisting, anti-static, high temperature-resisting and oil-resisting materials are arranged on the contact surface of the door plate and the door frame, so that the protective sealing door has a good sealing effect.

The invention relates to a floating platform for a mooring hot air airship. The floating platform comprises a capsule, a nacelle, an anchoring vehicle, a control system, and surface equipment; the capsule is connected with the nacelle through a pendant rope; and a mooring cable is connected with an intersection point at the lower end of the pendant rope and is arranged in the anchoring vehicle. The mooring cable is wound on a hydraulic pressure winch through a positioning disk; and the positioning disk and the hydraulic pressure winch are fixed on the anchoring vehicle. A mooring hot air balloon is released into the air 2,000 m high for carrying a communication base station in a remote operation mode, and quick deployment can be performed at a certain area, so that a smooth communication signal can be guaranteed at emergency and the floating platform has monitoring and detection functions. The floating platform for the mooring hot air airship has the advantages of low use cost, safety and reliability and the like, and is easy to operate and maintain.

The invention discloses a cross channel (CH) data link system of a fly-by-light flight control system, comprising a field programmable gate array (FPGA) module, a two-port random-access memory (RAM), an optical / electrical switching circuit, an electrical / optical switching circuit, a 2*2 photoswitch and a wavelength division multiplexer (WDM), wherein the FPGA module respectively communicates with the two-port RAM, the optical / electrical switching circuit, the electrical / optical switching circuit and the 2*2 photoswitch; and flight control computers 2 and 3 are respectively connected with the 2*2 photoswitch by the WDM. On the aspect of hardware of the CH data link system provided by the invention, the photoswitch and the WDM are adopted to realize fault inspection and multi-fault operation; meanwhile, a serial transmission protocol of universal serial buses (USB) is taken, thus ensuring the reliability of information transmission.

The invention discloses a movable egg car hatcher which comprises an incubator, a hatching adjustment system, at least one egg rack, at least one movable egg car, a power source and a transmission shaft component. The egg racks are erected on the corresponding movable egg cars in a suspended manner through rotating spindles, transmission mechanisms are arranged on the movable egg cars, parking spaces corresponding to the movable egg cars are arranged in the incubator, both the transmission shaft component and the power source are fixedly mounted on the incubator, the power source is connectedwith an input shaft of the transmission shaft component, the transmission shaft component is provided with output shafts corresponding to the parking spaces, a fixed butt joint part is arranged at theend of each output shaft, a butt joint shaft connected with the transmission mechanism of each movable egg car is arranged on each movable egg car, and a movable butt joint part is arranged at the end of each butt joint shaft. The movable egg car hatcher is reasonable in structure and simple to operate.

The invention discloses a dual-redundancy control method and system of a brushless motor. A Hall position sensor position signal and a Hall position sensorless position detection signal of the motor are fused to achieve reversing control cover the motor, and the reliability of the motor is improved. Different from the existing dual-redundancy motor technology, the dual-redundancy control method and system achieve dual redundancy of the motor only in an electronic control mode without changing an original motor mechanism. The method can improve the reliability of the motor and meanwhile cannot increase the weight of the motor or change the motor structure, so the requirements for high reliability, light weight and lower cost of the motor in the aviation field can be well met.

The invention relates to a precompensation method for in-band group delay fluctuation of a satellite navigation signal generating system, which comprises the following steps: (1) measuring a combined S parameter of a modulator, a filter and an amplifier in the satellite navigation signal generating system, and determining amplitude-frequency and group delay characteristic of the combination of the three devices; (2) counting the group delay characteristic of a precompensation filter according to the combined group delay characteristic; (3) obtaining the phase-frequency characteristic of the precompensation filter; (4) setting the phase-frequency characteristic of the precompensation filter to be an inverse Sinc function; (5) obtaining a system function of the precompensation filter according to the amplitude-frequency characteristic and phase-frequency characteristic of the precompensation filter; (6) obtaining a unit impulse response function of the precompensation filter; (7) setting a threshold value, and setting the quantity in the unit impulse response function, which is smaller than the threshold value, to be zero to be as a coefficient of the precompensation filter; and (8) realizing the precompensaiton filter in a digital standalone of the satellite navigation signal generating system by using the coefficient of the precompensation filter, so as to compensate the group delay fluctuation of the satellite navigation signal generating system.

The invention relates to an anti-icing and deicing system used for a wind driven generator set. The anti-icing and deicing system used for the wind driven generator set comprises a freezing detectingunit, a controlling unit and an anti-icing and deicing unit, wherein the anti-icing and deicing unit is arranged at the roots of fan blades; the anti-icing and deicing unit comprises an axial walkingmechanism capable of moving in the length direction of the fan blades and a longitudinal telescoping mechanism arranged at the end part of the axial walking mechanism; the longitudinal telescoping mechanism comprises a manipulator; and a float type adsorbing contact is mounted at the front end of the manipulator, and a vibrator and a far infrared heater are arranged on the float type adsorbing contact. The invention further comprises an anti-icing and deicing method used for the wind driven generator set. According to the system, the anti-icing and deicing unit is arranged at the roots of thefan blades, accordingly the anti-icing and deicing unit moves from the roots of the blades to the anti-icing and deicing position when the anti-icing and deicing are needed and the anti-icing and deicing unit returns to the roots of the fan blades when not needed, so that the problem of the anti-icing and deicing of a fan can be solved, the weight of the fan blades is not increased, and the service life of equipment can be prolonged.

A structure for a side portion of a vehicle has a closed cross-section structure formed by joining together an inner panel on the vehicle interior side and an outer panel on the vehicle exterior side, and also has a side sill as a vehicle body frame member placed at the side portion of the vehicle so as to extend in the front-rear direction of the vehicle. At a portion of an outer wall of the outer panel, there is formed an arch surface projecting outwardly of the vehicle interior with a position near the joined position of a vehicle body center pillar defined as the top of the arch. The outer panel has a flat surface section adjacent to the arch surface and including a rectilinear section extending in the front-rear direction of the vehicle body. The front end of the side sill is connected to a front side frame of the vehicle body. The rear end of the side sill is connected to a rear frame of the vehicle body.

The invention discloses a corrugation staggered fuel cell bipolar plate structure. The bipolar plate structure comprises an upper bipolar plate, a lower bipolar plate and a membrane electrode combination body, wherein the membrane electrode combination body is arranged between the two bipolar plates; the membrane electrode combination body comprises a cathode diffusion layer, a cathode catalyst layer, a proton exchange membrane, an anode catalyst layer and an anode diffusion layer from top to bottom; the cross sections of the bipolar plate along the flow direction of a fuel gas are in a wave shape, so that the bipolar plates form a plurality of strip-shaped peak portions and strip-shaped valley portions which are alternately arranged in a peak-valley shape; a plurality of corrugated protrusions which penetrate into the gas flow channels are uniformly distributed in the strip-shaped peak portions of the bipolar plate at intervals along the direction of the gas flow channel; and the corrugated protrusions on every two adjacent gas flow channels are arranged in a staggered mode. According to the structure, the gas convection in a rib lower diffusion layer is enhanced through the protrusions arranged in the gas flow channels in a staggered manner, the uniformity of reactant distribution is improved, better performance output and stability are achieved, and the power density and theservice life of the fuel cell are improved and prolonged.

The invention discloses an axial flow fan stationary blade noise reduction structure based on a memory alloy. A memory alloy driver and trailing edge sawtooth sliding block mode is adopted, and the axial flow fan stationary blade noise reduction structure is restrained in an axial flow fan hollow stationary blade; and two groups of memory alloy drivers are fixed at the end of a slot channel on a machine box and a wheel hub. The trailing edge sawtooth sliding block is installed in the position, located on the side face of the trailing edge of the stationary blade, in the machine box and the wheel hub. A connecting rod of the trailing edge sawtooth sliding block is connected with the memory alloy drivers through a connecting loop. Under different rotating speeds, voltage is utilized to control the elongation amount of memory alloy wires, so that displacement of the trailing edge sawtooth sliding block is changed and is coincident with trailing tracing width, and wideband noise of the stationary blade trailing edge is reduced efficiently. Meanwhile, trailing tracing change of a low speed axial flow fan under the different rotating speeds is small, the adopted memory alloy driving way achieves control of millimeter level displacement, control precision is high, coincidence of the trailing edge sawtooth sliding block and the trailing tracing width is guaranteed, and the best effect of control is achieved.

The invention provides a rail transport vehicle power supply system comprising a follow-up power supply cart, a power taking mechanism mounted on a rail transport vehicle, an external power supply, and a controller. A power supply mechanism matching with the power taking mechanism is mounted on the follow-up power supply cart and connected with the external power supply to acquire power. The follow-up power supply cart reciprocates in a fixed range on a guide rail line of the rail transport vehicle. The power supply mechanism can be abutted to the power taking mechanism of the rail transport vehicle when the rail transport vehicle needs power, and can separate from the power taking mechanism after power supply, and the follow-up power supply cart can return its initial position after separation. The controller controls actions of the mechanisms. Therefore, normal power supply to the rail transport vehicle on a power-taking station segment of the rail transport vehicle is guaranteed.

The invention discloses a modulation method for inhibiting leakage current of H-bridge cascade inverters. The modulation method can maintain the sum of parasitic capacitance voltages of all modules to be constant, and thus the leakage current is eliminated. The method comprises the following steps: dividing all modules into module groups in pairs according to rules, and dividing into a power frequency module group and a high frequency module group; obtaining the on-off state of the power frequency module group through comparison of modulating waves and fixed values; obtaining the on-off state of the high frequency module group through comparison of corrected modulating waves and two stacked triangle carriers; and generating corresponding PWM signals through the combination of the on-off states, and distributing to corresponding pins. The scheme can be used for multiple H-bridge cascade inverters, and extra hardware cost does not need to be added, so that the leakage current flowing into a power grid can be eliminated, meanwhile the switching loss is relatively low, and the implementation manner is simple.

The invention discloses a cement head magnetic induction rubber plug indicator, which comprises a top cover, a cement head body and a lower joint. A detection section is arranged between the cement head body and the lower joint; the cement head body is provided with a spiral stop bin which stretches into the cement head body; a well cementing rubber plug which is limited by the spiral stop bin isarranged in the cement head body; a magnet is arranged on the well cementing rubber plug; and the detection section is provided with a magnetic sensor which is connected to a secondary instrument. The rubber plug is not in mechanical hard contact with a cement head when passing through the cement head, so the rubber plug cannot be damaged; and a magnetic field is taken as a medium, the magnetic induction sensor senses the downward movement of the rubber plug, and a detection signal is contactless and has high accuracy and reliability.

The invention relates to a separating alarming system for a safety helmet. The separating alarming system for the safety helmet is characterized in that pressure sensors are mounted at a front point, a rear point, a left point, a right point, a top reinforcement of the head and a mandible tying belt, wherein the four points arranged in a hoop of the helmet, corresponding to the head; each pressure-sensitive sensor sets the corresponding sensitive value for determining whether the safety helmet is worn accurately; a safety helmet alarming device is mounted at the outer part of a housing and transmits data with the sensors through a data wire; the safety helmet alarming device has the wireless signal emitting function and can be used for sending alarming information to an alarming terminal of a monitoring person in case that any pressure sensor does not sense the pressure from the head. According to the system, a plurality of pressure sensors are mounted, so that construction workers can wear the safety helmet accurately; the whole system is lightweight, the weight of the safety helmet is not increased, and a user does not feel any uncomfortable. With the adoption of the system, the states of lots of safety helmets can be recorded, so the monitoring person can comprehensively monitor all devices, and as a result, the safety construction management can be improved.

The invention discloses a safety helmet wearing management system based on a BIM. The safety helmet wearing management system comprises a safety helmet, a pressure sensor, a first positioning chip, asecond positioning chip, an alarm device, an RFID reading receiver, a data storage of BIM integration, a BIM central processing unit and an operation terminal. The pressure sensor is placed on the inner side of a helmet brim of the safety helmet. The alarm device is installed outside a helmet shell of the safety helmet. The alarm device is connected with the pressure sensor through a data line. The first positioning chip and the second positioning chip are arranged on the safety helmet. The RFID reading receiver is connected with the data storage of the BIM integration and then connected withthe BIM central processing unit and the operation terminal through a network transmission device. The operation terminal is provided with a green light positioning indicator lamp and a red light positioning indicator light. It is comprehensively ensured that an on-site constructor correctly wear the safety helmet, the position of a worker is accurately positioned, it is avoided that the worker drops the safety helmet due to objective reasons, and the risks of a construction site are reduced to the minimum.

The invention discloses a plug with a light-emitting diode (LED) lamp. The plug comprises a plug body. A groove is formed on the end face of a plug terminal of the plug body. An LED lamp bead and an LED driving circuit are arranged in the groove. In addition, a switch of the LED driving circuit is arranged on the lateral surface of the plug body. According to the technical scheme, a light source is arranged at the plugging end of the plug body, so that the plug can be conveniently aligned with and plugged into a socket; the LED lamp bead serves as the light source, and is light, so that the weight of the plug is not increased; and in addition, a fluorescent layer also can be arranged on the switch of the LED driving circuit, so that the switch is remarkable even at night, and can be conveniently turned on to light up the LED lamp.

The invention relates to a stirring paddle. The stirring paddle comprises a stirring shaft, paddle blades and a connecting component. The paddle blades and the stirring shaft are connected in a welding manner. The connecting component is arranged at the top end of the stirring shaft. The stirring paddle is characterized in that at least two layers of paddle blades are arranged, each layer of paddle blades at least comprise three blades, and each blade comprises an upper inner rotational flow plate, a lower inner rotational flow plate and an outer rotational flow plate, wherein one end of the upper inner rotational flow plate and one end of the lower inner rotational flow plate are welded to the stirring shaft, and the other end of the upper inner rotational flow plate and the other end of the lower inner rotational flow plate are connected to the two ends of the outer rotational flow plate in a welding manner; and the upper inner rotational flow plates, the lower inner rotational flow plates and the outer rotational flow plates are obliquely arranged relative to the horizontal plane, the upper inner rotational flow plates and the lower inner rotational flow plates incline downwards in the rotation direction of the stirring shaft, and the outer rotational flow plates incline upwards in the rotation direction of the stirring shaft. According to the stirring paddle, the purpose of improving the stirring effect is achieved by changing the inner rotational flow plates and the outer rotational flow plates of the stirring paddle blades, and therefore the weight and the size of the structure cannot be increased, and labor wasting and other adverse effects cannot be generated on cement stirring work.

The invention discloses a thermal infrared imager and laser radar based thermal infrared bow net operation monitoring system. The thermal infrared imager and laser radar based thermal infrared bow net operation monitoring system comprises a thermal infrared imager, a laser radar, a visible light vidicon, a vehicle-mounted server, a massive mobile hard disk, a GPRS vehicle-mounted transmission module and a data inquiry analysis system. The thermal infrared imager, the laser radar and the visible light vidicon are arranged on the top of a locomotive and are connected with the vehicle-mounted server in the locomotive; the GPRS vehicle-mounted transmission module and the data inquiry analysis system are also connected with the vehicle-mounted server; and the massive mobile hard disk is arranged on the vehicle-mounted server. As temperature distribution of a bow net is detected by adopting the thermal infrared imager, the height of a conductor and a stagger value are detected by adopting the laser radar, and the parameters are transmitted to a scheduling room in real time through the GPRS data transmission network, installation of a detection sensor on a head of a pantograph is unnecessary, the weight of the head of the pantograph is not added, and accurate and real-time theoretical basis is provided for maintenance and post-accident inquiry of a contact network.

The invention discloses an inverse compensation stable-attitude quadrotor unmanned aerial vehicle. The inverse compensation stable-attitude quadrotor unmanned aerial vehicle comprises a vehicle body, wherein four arms are fixedly connected to the vehicle body, a rotor wing is installed at the tail end of each arm, the arms are arranged in a pairwise opposite mode, every two opposite arms are located on the same straight line, and the positions where two opposite arms are connected with the vehicle body are higher than the positions where the other two opposite arms are connected with the vehicle body; a chamber channel is formed in each arm, the chamber channels of every two opposite arms are communicated through a pipeline arranged in the vehicle body to form parallel channels, and balancing blocks are arranged in the parallel channels and driven by driving devices arranged on the parallel channels. By the adoption of the inverse compensation stable-attitude quadrotor unmanned aerial vehicle, the problem that the vehicle shakes under continuous strong wind high in the sky is effectively solved, and the quality of an aerial photo is more stable.

The invention discloses a power vibration absorber for a helicopter, which comprises a storage battery and a support structure. The storage battery is mounted on a floor of a front helicopter body of the helicopter by the support structure, and is used as a mass block to form a vibrating system by the aid of the support structure, and a power vibration absorption effect is realized. The storage battery is used as the mass block, accordingly, the weight of the total helicopter cannot be increased, and dual effects are realized due to the fact that the storage battery is heavy and a vibration absorption effect is good. In addition, flight vibration level on a floor of a control cabin is reduced by 30% at least after the power vibration absorber is mounted on the helicopter with violent vibration, and comfortableness of a pilot is remarkably improved during a flight.

The invention discloses electronic equipment used for reducing the cost. The electronic equipment comprises an optical collecting unit and a processing unit. The optical collecting unit comprises a shooting subunit and an optical subunit, wherein the optical subunit is attached to the front end of the shooting subunit. The optical subunit at least has the scattering state. The processing unit is connected with a display unit and the shooting subunit. When the optical subunit is in the scattering state, the optical collecting unit collects environment optical information of the environment where the electronic equipment is located according to the shooting subunit and the optical subunit so that the processing unit can at least adjust a first value of a first display parameter of the display unit to a second value different from the first value according to the environment optical information. The invention further discloses a parameter adjusting method implemented through the electronic equipment.

The invention relates to VR equipment which comprises a VR equipment body, a storage battery, a charging socket, a power supply switch, a power supply plug, power supply sockets, a temperature switch,a refrigeration device and a control circuit, wherein the control circuit, the power supply switch, the charging socket, the first power supply socket, the storage battery and the refrigeration device are arranged in an element box, and are connected through conducting wires; the temperature switch and the other power supply socket are arranged in a head-mounted device casing and are connected through conducting wires; a magnet is arranged at the side end of an air inlet pipe of the head-mounted device casing; the refrigeration device comprises an air hose, an air extracting pump and a semiconductor refrigeration sheet; the air extracting pump and the semiconductor refrigeration sheet are arranged in the element box; a magnet is arranged at the outer side of an air outlet pipe at the sideend of the element box; the air outlet pipe is connected with the air extracting pump; and a magnet is arranged at the outer side end of a connecting pipe arranged at each of the left and right endsof the air hose. The VR equipment has the advantages that in the use process, the temperature in the casing can maintain at a low temperature, so that temperature reduction and heat radiation can be realized on a mobile phone; the smooth playing of mobile phone videos is ensured; the weight of the head-mounted device cannot be increased; and no noise or vibration can be generated.

The invention discloses a foamed aluminum liner power distribution cabinet, belongs to the technical field of power distribution cabinets, and aims to provide an epoxy powder power distribution cabinet which has a good heat dissipation effect, is scratch-resistant and has good insulating performance. The technical scheme is as follows: the power distribution cabinet comprises a cabinet body with heat dissipation ports; the cabinet body has a front door and a rear door, the front door of the cabinet body is a side-opening door, and the rear door of the cabinet body is a center-opening door; the inner walls of the cabinet body, the front door and the rear door are provided with a foamed aluminum layer; the inside of the cabinet body is provided with a temperature sensor, a temperature relay and heat dissipation fans which are electrically connected in series; the temperature sensor is arranged corresponding to an air switch in the cabinet body; and the heat dissipation fans are mounted at the heat dissipation ports. The technical scheme can be widely used in power distribution cabinets.

The invention discloses a battery heat preservation device for an unmanned aerial vehicle. By laying a heat generation layer on a surface of a heat preservation material on a side surface of a box body and controlling power-on and power-off of the heat generation layer by a microcontroller, a temperature in the box body can be maintained within a set temperature range, a battery can normally supply power under a cold temperature, and the problems of flying time and safety of the unmanned aerial vehicle under a cold condition is solved; by arranging a heat preservation layer on an inner wall of the box body, the temperature of a heating layer is favorably and more efficiently stored in the box body for battery heat preservation; the heat generation layer is used for heating a graphene thin film through conduction, graphene has very excellent conductivity, and is very thin and light, and thus, the weight of a battery device cannot be increased by additionally arranging the graphene heating layer; and since power consumption quantity is extremely low, and the durability of the battery cannot be affected.

The invention provides a bogie and a track vehicle provided with the same. The bogie comprises a load transmission mechanism, a frame body and an elastic positioning mechanism, wherein the frame body is provided with an accommodating gap part for accommodating the load transmission structure; the elastic positioning mechanism is arranged between the load transmission structure and a side wall of the accommodating gap part along a longitudinal direction; the elastic positioning structure comprises a shell, and a first partition part and a second partition part which are arranged in the inner cavity of the shell in sequence along the longitudinal direction; the inner cavity is partitioned into a first chamber, a second chamber and a third chamber by the first partition part and the second partition part; the first chamber and the second chamber are fully filled with damping fluid; the first partition part is provided with a damping hole for communicating the first chamber and the second chamber; the second partitioning part is elastic; an annular deformed part is formed on the shell corresponding to at least a part of the circumferential side wall of the first chamber. According to the technical scheme, the problems of complicated bogie structure and heavy deadweight caused by giving consideration to linear running performance and curve passing performance in the prior art can be solved effectively.

The invention discloses a brake linkage mechanism. The brake linkage mechanism is arranged at an appropriate position of the body of a bicycle by a fixing seat, so that the brake linkage mechanism can be simultaneously connected with brake cables of front and back wheels, wherein the fixing seat is provided with a first connecting part and a second connecting part. The linkage structure is arranged in the mounting part and is composed of at least three disc bodies, wherein the peripheries of the three disc bodies are provided with guiding parts which are used for being connected with brake cables introduced from handlebars and being connected to the brake cables of the front and back wheels. By the rotating connection of the three disc bodies of the linkage structure, front and back brakes can act simultaneously, thereby ensuring uniform braking force on the front and back wheels so as to avoid crash. Because the linkage structure is designed by diameter designs of the three disc bodies, the braking force on the front and back wheels can be adjusted, thereby being capable of generating the braking force different from the preset braking force on the front and back wheels.