74results about How to "High reliability and safety" patented technology

The invention relates to a mixed airplane brake system and a control method. A brake valve of the mixed airplane brake system is connected to a airplane pressure supply system, an electro hydraulic servo valve oil inlet and an oil returning tank through a pipeline; the electro hydraulic servo valve is connected to a brake nozzle of the brake valve, an oil inlet of the electromagnetic valve and an airplane oil return tube through the pipeline; and an electromagnetic hydraulic lock and the electro hydraulic servo valve are parallel channels on a hydraulic line. An oil inlet pressure transducer is arranged on the pipeline between the brake valve and the electro hydraulic servo valve; a brake port pressure transducer is arranged on the pipeline between the electromagnetic valve and a brake machine wheel. Under the failure of the electro hydraulic servo valve, an airplane antiskid brake control system can automatically convert a current normal brake mode to a standby brake mode and then enables reliable operation, driver intervention is not required, so that the work load of the driver is reduced. The mixed airplane brake system enables mode record on a fault state of the electro hydraulic servo valve, and is convenient for troubleshooting and maintenance by maintainer after flight.

The invention discloses a braking system with dual-control independent control function, which is provided with a first braking control unit (S1) and a second braking control unit (S2). The first brake control unit (S1) and the second brake control unit (S2) are control units that each independently completes the parking control function. The invention also discloses a control method of the parking brake system. By adopting the technical scheme, the complete normal parking function can be satisfied, and the safe braking and parking function can be satisfied when different power supplies, functional modules and circuits fail by a dual independent control mode, and the braking system and the method have the advantages of high safety, simple application process, convenience and portability, and convenient arrangement.

The invention discloses an intelligent contract processing method and a blockchain system, and relates to the technical field of intelligent contract encryption. The blockchain system comprises a blockchain based client and an intelligent contract platform. The method comprises that the client obtains an encryption instruction aimed at an intelligent contract and input by a user, and determines acorresponding encryption algorithm among multiple types of preset encryption algorithms according to an attribute parameter of the encryption algorithm carried by the encryption instruction; the intelligent contract is signed on the basis of the determined encryption algorithm, and the signed intelligent contract is sent to the intelligent contract platform; and the intelligent contract platform verifies signature of the signed intelligent contract so as to verify the validity of the intelligent contract. According to an embodiment of the invention, the user can select the encryption algorithmused to sign the intelligent contract, so that the flexibility of complete operation is improved, the encryption algorithm can be selected flexibly, and the intelligent contract is more reliable andsafer via the controllable encryption algorithm selected freely.

The invention relates to an underground special hydraulic loader and belongs to an underground goods transferring device. The loader has the technical proposal that: the loader comprises a flat vehicle frame; the bottom part of the vehicle frame is provided with a walking wheel which can be matched with a guide rail, and a supporting mechanism; the vehicle frame is fixedly provided with a hydraulic lifting upright post; the top end of the hydraulic lifting upright post is provided with a top disk; the vehicle frame is provided with a rotating upright post; and the rotating upright post is provided with a lifting device. When the loader is used, the top disk on the top part of the hydraulic lifting upright post supports against the top of a laneway, and the bottom part of the hydraulic lifting upright post is supported by the supporting mechanism on the bottom part of the vehicle frame, and a lifting root is firm. The advantages of the proposal can be known according to the depiction ofthe proposal, a complete machine can realize mechanical control by hydraulic driving control, a controlling valve set is operated to control a crane mechanical arm to finish material loading and unloading operation, and a complicated operation mode of manual hoist lifting is replaced. The loader fundamentally solves the problems of the loader of material fittings in the process of producing underground synthetical exploitation working faces, reduces the labor intensity of miners, improves the working efficiency and safety factors and has the advantages of simple operation and high safety andreliability.

The invention provides an operation sample box on the basis of an RF (Radio Frequency) technology, which can enable registration information not to be wrong and not to be omitted and enable a specimen tag not to be stained and identified by mistake in the submitting and packaging process of a specimen, and a submission method thereof. To fulfill the aim, the invention adopts the technical scheme that the operation sample box comprises a box body, a cover body, a touch screen display, an identification module, a power supply module, a data storage module, a data comparison module, a controller, an electronic lock for locking the box body and the cover body, a wireless communication module and an RFID (Radio Frequency Identification Device) electronic tag.

The invention discloses a bus switch method based on CAN redundance, comprising the steps: 1) judging nodes are sending nodes or receiving nodes; if being the sending nodes, entering the step 2); if being the receiving nodes, entering the step 5); 2) judging whether the sending nodes are sent overtime; if yes, entering the step 3); if not, entering the step 4); 3) retransmitting by a switch bus; 4) monitoring the sending nodes until overtime or receiving response frame of the receiving nodes; 5) judging whether the receiving nodes are sent overtime; if yes, entering the step 6); if not, entering the step 7); 6) using a broadcast switch bus to inform other node switch buses to retransmit data; 7) receiving the response frame sent by the nodes as the response for the sending nodes, and showing that the data is successfully sent and received. The method can ensure the reliable accuracy and real-time property of data reception.

The invention belongs to a full-automatic pet nursing device, and particularly relates to a household pet nursing device for monitoring, automatically feeding and automatically cleaning feces based onan internet controlled by a single-chip computer and a large-data internet pet medical system based on the device, wherein the device is characterized in that a grid cage is used as a shell and is divided into a pet rest area, a pet feeding area and a pet defecation area according to different functions of an inner area. The product can solve the problem of hosting and nursing in family care, canavoid vicious events caused by hosting other people or institutions by pets, and can host the pets at home after the product is owned; the device is provided with an internet data processing platformwhich is matched with the device, can upload the activity information of the pet to judge the health condition of the pet and feed the information back to the pet clinic of the pet owner or communityso as to treat the pet in time. The product has the advantages of targeted full-automatic nursing for pets, good practicability, high safety and huge market demand potential.

The invention discloses a three-airfoil layout vertical take-off and landing general aircraft, which comprises a wing, a fuselage, a tail wing, a duck wing, a power device, a connecting device, a propulsion system and a duck wing coaxial rotating device. The power device comprises a first power device, a second power device, a third power device and a fourth power device; the top of the fuselage is provided with the duck wing. Both ends of the duck wing are respectively provided with the first power device and the second power device. Both sides of the outer part of the fuselage and below theduck wing are respectively provided with wings. A connecting device is arranged below the wing. Both sides of the connecting device are respectively provided with the third power device and the fourthpower device. The bottom of the fuselage is provided with the tail wing. The control device is arranged inside the fuselage. The aircraft solves the problems of insufficient lift force, without direct force control, low static instability, low take-off and landing performance, poor safety reliability, heavy wing load, low take-off load and high use cost of the general aircraft.

The invention relates to an automatic clamping apparatus of a switch dolly. The apparatus comprises a screw rod slide table, a slide table motor, a supporting plate, push rod motors, pressure plates and stopper blocks. The screw rod slide table is fixedly installed at the bottom surface of a switch cabinet switch dolly mounting chamber; the supporting plate is fixedly installed on the screw rod slide table; the top surface of the supporting plate is provided with the switch dolly; the supporting plates at the two sides of the switch dolly are each fixedly provided with a supporting frame; each supporting frame is vertically fixedly provided with an upper pressing push rod motor; the push rod head portion of each upper pressing push rod motor is transversely fixedly provided with an upper pressure plate; the two sides of the supporting plate behind the supporting frames are each vertically fixedly provided with a lower pressing push rod motor; the push rod head portion of each lower pressing push rod motor is transversely fixedly provided with a lower pressure plate; the upper pressing push rod motors, the lower pressing push rod motors, a movable contact push rod motor and the slide table motor are controlled by a PLC; and operation is selected through a touch screen. According to the invention, the effects of reducing personnel operation, realizing automatic control, improving safety and reliability and the like can be achieved.

The invention relates to a torsion bar type underground focus suitable for cased wells with any slope. The torsion bar type underground focus comprises an outer shell, a motor, a reducer, a driving gear, a driven gear, a shifting bar, a base, a stopping block, a torsion bar, a pendulum bob, an anvil bar, a transmission bar and a tension spring. The motor, the reducer and the driving gear are sequentially connected through the transmission bar, the driving gear is fixedly connected with the transmission bar, the driving gear is in inner meshing with the driven gear, the driven gear and the corresponding part of the base are provided with semi-circular groove holes, a circular groove hole is relatively formed, the shifting bar is inserted into the circular groove hole and provided with an arc-shaped notch corresponding to the outer edge of the base in radian, the shifting bar is connected with the base through the tension spring, the base is fixedly connected with the torsion bar, the stopping block is fixed on the outer shell, the torsion bar is fixedly connected with the pendulum bob, and one end of the torsion bar is fixed on the outer shell. According to the torsion bar type underground focus, the device reliability can be improved, the potential safety hazard that the focus may be clamped in an underground well is thoroughly eliminated, meanwhile, the requirements of large-slope horizontal well logging are met, and the energy consumption is reduced.

The invention relates to a novel cabin door actuator. According to the device, force produced by torsional deformation of torsion rods and damping produced by motion of a buffer are utilized to provide resistance for door opening motion of an accommodation ladder door; force produced by torsional deformation recovery of the torsion rods is utilized to provide assist force for motion of the accommodation ladder door; and the main torsion rod or the balance torsion rod works in different time or different paths so as to adjust the magnitude of the resistance or the assist force in the different times or the different paths.

The invention is a kind of minim pump droved by magnetism energy, it comprises a base board, a head board and a middle board which is in the middle of the other two boards, so forms four pump cavities, it has entrance and exit; it includes two free surface which are formed in the middle board; the head board has hole connected to outside; there are magnetism energy driving device in the two free surfaces to drive them, the magnetic field formed by fixed current interacts with outer magnetic field, it make the free surface change to make the volume of cavity change periodically.

The invention relates to an optical voltage transformer and an encapsulating method thereof. The transformer includes a transformer shell, an insulator, an conductor electrode, an insulating silicone rubber, an optical voltage sensing head, an optical fiber and an electric unit, wherein the insulator, the insulating silicone rubber and the optical voltage sensing head are all arranged in the transformer shell; one end of the optical fiber is connected with the optical voltage transformer while the other end is led from a through hole in the side wall of the transformer shell and to the electric unit outside the transformer shell; the optical voltage sensing head and the end of the optical fiber connected to the optical voltage sensing head are embedded into the insulating silicone rubber by an silica gel encapsulating technology; the insulator covers the outer part of the insulating silicone rubber by a pouring technology and is filled with the whole inner part of the transformer shell; one end of the conductor electrode is reserved with a wiring terminal for connecting external voltage, and the part, besides the wiring terminal, of the conductor electrode is embedded into the top of the insulator. The transformer provided by the invention is simple in structure, small in size, light in weight, greatly reduced in cost, and high in reliability and safety.

The invention discloses a single auxiliary elevator self-locking bolt. The bolt comprises a hand shank, a spring, a threaded pin, a lower pressing rod and a steel ball, a clamping ring is arranged onthe outer side of the threaded pin, a ball position through hole is formed in the position of the lower end of the threaded pin, the lower pressing rod sequentially comprises a hand pressing part, a limiting part and a main rod part from top to bottom, a steel ball clamping groove is formed in the position, located at the lower end, of the main rod part, the steel ball is placed in the ball position through hole, the lower pressing rod is arranged in the threaded pin, the spring sleeves are placed on the top end of the main rod part of the lower pressing rod, a handle is clamped outside the threaded pin, connecting and fixing together through threaded connection, and the bottom end of the handle abuts against the upper end of the clamping ring on the outer side of the threaded pin. The bolt has the advantages that the pull pin or the plug pin can be pulled down by pressing down the pressing rod, self-locking can be realized by loosening the lower pressing rod, convenient and rapid to operate, high in reliability and safety, simple in structure, convenient to assemble, low in manufacturing cost and capable of being popularized and used.

The invention discloses an airborne high-speed camera biaxial adjusting and supporting device. The airborne high-speed camera biaxial adjusting and supporting device comprises a transmission shaft, aworm and gear adjusting mechanism, a support, an installing plate and a bottom plate assembly, wherein the transmission shaft is arranged on the installing plate in a penetrating manner, and the two ends of the transmission shaft are erected on the support; the installing plate is provided with an installing hole used for installing a camera; the transmission shaft can be fixed to the support through a fastener; the worm and gear adjusting mechanism is connected with the transmission shaft so as to drive the transmission shaft to rotate; the bottom plate assembly comprises a fixed plate and arotating plate capable of rotating relative to the fixed plate; the rotating plate is fixedly connected with the support; and the fixed plate and the rotating plate can be fixed through the fastener.According to the airborne high-speed camera biaxial adjusting and supporting device, the horizontal angle and the elevation angle of the airborne high-speed camera can be conveniently adjusted, and meanwhile it is convenient to install the airborne high-speed camera in a narrow and small space.

The invention belongs to the technical field of airplane design and particularly relates to an inner and outer wing butt joint structure for a small unmanned aerial vehicle, which can realize butt joint of an inner wing and an outer wing of the small unmanned aerial vehicle. The inner and outer wing butt joint structure for the small unmanned aerial vehicle comprises an inner wing metal butt jointrib and an outer wing metal butt joint rib; two cylindrical grooves are formed in the inner wing metal butt joint rib; one end of each cylindrical groove is closed; run-through round holes with the same size are formed in the corresponding position of the outer wing metal butt joint rib; and a front sleeving metal pipe and a back sleeving metal pipe run through the round holes in the corresponding position of the outer wing metal butt joint rib and sleeve the closed cylindrical grooves at the corresponding position of the inner wing metal butt joint rib. The inner and outer wing butt joint structure has the characteristics of high load transfer efficiency, simple structure form, high reliability and safety and simplicity in assembling and disassembling mode, and can meet the customer requirements.