297results about How to "Protect the safety of use" patented technology

The invention discloses a track vehicle rim and tread flaw detection probe assembly system. The track vehicle rim and tread flaw detection probe assembly system comprises a tread flaw detection probe assembly and a rim flaw detection probe assembly. The tread flaw detection probe assembly leans on the tread of a wheel through a mechanical arm; the rim flaw detection probe assembly leans on the rim surface of the wheel through the mechanical arm; the tread flaw detection probe assembly can automatically detect wheel tread and rim defects from the tread in an online mode and is high in detection efficiency, accurate in detection result, simple in structure and convenient to use and operate; the rim flaw detection probe assembly can automatically detect wheel rim surface and tread detects from the inner lateral side of the rim in on online-mode and is high in detection efficiency, accurate in detection result, simple in structure and convenient to use and operate.

The invention discloses an air conditioner monitoring method, device and system. The system comprises an acquisition device, a controller and a cloud server, the acquisition device is used for acquiring operational data of an air conditioner in real time, the controller is connected with the acquisition device and used for collecting the operational data and sending the operational data to the cloud server, the cloud server is connected with the controller and used for determining the operating state of the air conditioner and generating diagnosis data corresponding to the operating state of the air conditioner, wherein the diagnosis data include descriptive data of the operating state of the air conditioner. By the method, device and system, the problem that the operating state of the air conditioner using the flammable refrigerant cannot be monitored in real time in the prior art is solved, and the operating state of the air conditioner is monitored and diagnosed in real time.

The invention discloses an automatic disk grabbing device for a compact-disk server. The automatic disk grabbing device comprises a supporting plate, wherein the supporting plate is provided with a main rod, the lower end of the main rod is provided with a conical rod, two first rotating elements are arranged between the main rod and the conical rod, each first rotating element is provided with a vertical shaft and a disk lifting piece, the upper end of the main rod is provided with a second rotating element which can rotate relative to the main rod, the second rotating element is provided with two projections, the vertical shaft passes through the main rod, a connecting piece is fixed on the upper end of the vertical shaft, the connecting piece is provided with a guide groove which is matched with the projection in a sliding way, the disk grabbing device also comprises electromagnet and a connecting rod as well as a spring which is arranged between the connecting rod and the electromagnet, the connecting rod is movably connected with the second rotating element through the connecting piece, the disk grabbing device controls the connecting rod to be stretched or withdrawn through the electromagnet, the first rotating element is driven by the second rotating element and the connecting piece to rotate forwardly and reversely so as to further control the disk lifting piece to stretch out or withdraw into a gap between the main rod and the conical rod. The automatic disk grabbing device can automatically grab compact disks of any designated quantity, so the storage density and the space utilization effect can be greatly improved.

The invention discloses a system and method for a safely receiving and distributing of radio and television contents and an internet gateway device. The method utilizes a combination way of CAS (Conditional Access System) and DRM (Data Rights Management) technology and enables the radio and television contents to be effectively protected in the processes of being transmitted from head end system in scrambling to gateway system in descrambling and then being distributed to all kinds of terminal devices to be consumed in scrambling, the method is compatible with the existing deployed CAS, thereby ensuring the safety of the content transporting and using, maintaining the legitimate interests of the ontent provider and the operator, meanwhile, all kinds of terminal devices can also broadcast radio and television content according to the use-permission of the customer order, thereby improving the impulse buying desire of the user and increasing the income of the operator.

The invention relates to the field of heating of small household electrical appliances and specifically relates to a pressure relief structure. The pressure relief structure comprises a kettle lid structure and a cavity, wherein a water outlet is arranged on the kettle lid structure, the kettle lid structure is buckled above the cavity, and a water outlet valve structure for opening and closing a connecting channel between the water outlet and the cavity is arranged in the kettle lid structure. The pressure relief structure is characterized in that a first pressure relief hole for exhausting steam is formed in the kettle lid structure, and an elastic covering piece is arranged on the first pressure relief hole; when the elastic covering piece is jacked up by high-pressure steam in the cavity, a gap is formed between the first pressure relief hole and the elastic covering piece, and the gap can communicate the cavity with the outer atmosphere; and when air pressure in the cavity is lower and can not jack up the elastic covering piece, the first pressure relief hole is covered, and the cavity can not be communicated with the outer atmosphere through the first pressure relief hole. The pressure relief structure has the advantages of simplicity, safety, reliability and double protection in use of a user.

The invention provides a credit card anti-theft method and system based on image sharing. The system is composed of a bank-side identity recognition system and a merchant-side identity recognition system. The bank-side identity recognition system includes an image generation module, a reconstruction processing module and an automatic The identification module, the merchant-side identification system includes an image processing module connected to the reconstruction processing module and the automatic identification module, a signature input module and an image capture module both connected to the image processing module, and a display module connected to the automatic identification module. After the system preprocesses the image of the cardholder's signature, two shadow images are generated through image sharing, one is printed on the credit card, and the other is saved to the bank; The shadow image is reconstructed to restore the cardholder's signature image, and compare whether it matches the consumer's signature image. The invention protects the use safety of the credit card, has low realization cost and has strong practicability.

The invention discloses an anti-collision protection device for a charging pile of a new energy automobile, and relates to the technical field of new energy, in particular to the anti-collision protection device for the charging pile of the new energy automobile. The device comprises a parking space ground, a mounting plate, the charging pile of the new energy automobile and a fixed plate. According to the anti-collision protection device for the charging pile of the new energy automobile, through cooperative use of a rubber pad, a built-in blocking cylinder, an external annular blocking cylinder and a shock-proof spring, the built-in blocking cylinder is used for comprehensively protecting the charging pile of the new energy automobile; when a driver operates improperly, some vehicles runfrom the side surface of the ground of the parking space or crash the rear metal baffle plate, and the vehicle is buffered for the first time through a rubber pad; meanwhile, a shock absorption spring deforms, the impact force is reduced again, and finally, the vehicle is blocked through a built-in blocking cylinder, so that the new energy vehicle charging pile is effectively prevented from beingdamaged, and multi-layer protection is formed for the new energy vehicle charging pile; therefore, the working efficiency of the charging pile anti-collision protection device of the new energy automobile is improved.

The invention discloses a precise instrument vibration isolation platform. The precise instrument vibration isolation platform comprises a load platform module, a vibration isolation system module anda mobile support module. Three modules of the vibration isolation device are distributed from top to bottom, and a vibration isolation system module (composed of three vibration isolator assemblies)is located in the middle and connected with the load platform module and the mobile support module up and down. The designed vibration isolation system module is of a closed multi-group parallel structure, and has the characteristics of high bearing capacity, good stability and the like; meanwhile, a three-point six-spring oblique convergence type supporting design is adopted for the vibration isolator assemblies, the three-direction equal-rigidity and equal-fundamental-frequency functions under a space coordinate system are achieved, and good vibration reduction and isolation performance is achieved; besides, vibration isolation devices are provided with limiting locking assemblies in parallel, the limiting protection effect on a precise measuring instrument can be achieved, and good safety is achieved. The vibration isolation device integrally adopts a travelling crane integrated design, is movable, lockable, convenient to use and fast, and has very strong environmental adaptability.The whole structure is simple, the manufacturing cost is low and the application prospect is wide.

The invention discloses a traction battery automatic charger comprising a transformer and a rectifier bridge. The primary side of the transformer is connected to a power main line, the secondary side is connected to the input end of the rectifier bridge and the output end of the rectifier bridge is connected to a terminal through a fusing protector. The main technical characteristics is that a plurality of regulation taps are arranged on the primary side of the transformer, a detection and control module is formed by a detection unit, a microcomputer processing unit and a switching unit, wherein the detection unit includes a voltage sensor, a current sensor and a temperature sensor, the output end of the detection unit is connected to the input end of the microcomputer processing unit, the output end of the microcomputer processing unit is connected to the input end of the switching unit, the switching unit is correspondingly arranged between the power main line and each regulation tap at primary side of the transformer. The charger intellectualization is achieved according to the invention and the charge process is finished in shortest time with highest efficiency and unattended duty. The battery life is prolonged because of the least heat generation and water loss of the battery during the charge process.

The invention discloses a mining method of a short- and long-wall portion of under-village coal, comprising steps: determining a face mining width extremum according to rock formation properties of a mining site in connection with face mining equipment supporting to obtain a face mining width range; determining an extremum of strip pillar reserved width between faces according to overlying stratum depth and overlying rock lithological conditions in connection with Wilson's theory, thus obtaining a strip pillar reserved width range; pairing face mining width and pillar reversed width by using an orthogonal method according to the face mining width range and isolation pillar reserved width range to form multiple schemes, and subjecting each scheme to pillar stability check and mining subsidence prediction to select optimal schemes; determining a mining sequence of strip multiple faces according to the principle of mining an area right under a building prior to lateral mining; the method has high operating efficiency, low cost and environmental friendliness.

The invention discloses a lifting and carrying device for warehouse cargoes. The lifting and carrying device for warehouse cargoes comprises a supporting rack, wherein a roll is fixed to the horizontal end of the top of the supporting rack through a bolt; one side of the roll is in transmission connection to a servo motor through an output shaft; the lower side of the roll is connected to a lifting plate on the inner surface wall of the supporting rack through a hinge by means of a steel rope; a driving air cylinder is fixed to the upper end of the outer surface wall on one side of the supporting rack through a bolt; the lower end of the outer surface wall on one side of the supporting rack is connected to a loading conveyor belt through a connecting rod; the upper end of the outer surfacewall on the other side of the supporting rack is connected to an unloading conveyor belt through a connecting rod; and a driving motor is fixed to the outer surface wall on the other side of the supporting rack through a bolt, and the upper side of the driving motor is in transmission connection to a hairbrush disc through an output shaft. The lifting and carrying device for warehouse cargoes disclosed by the invention is simple and reasonable in design of integral structure, flexible and convenient to operate and safe and stable to operate, achieves the quick and safe lifting and carrying effect of cargoes, and is of relatively high practicality.

The invention relates to a microwave leakage prevention device for a microwave oven. The microwave oven comprises a high-frequency microwave generator, an oven body having a cooking room and an oven door for opening and closing an entrance of the cooking room. A front plate used for limiting the appearance of the entrance is arranged at the entrance of the cooking room of the oven body. The oven door comprises a contact part which is arranged to be opposite to a corresponding part of the front plate of the oven body and can fit with the corresponding part of the front plate when the oven door is closed. The invention is characterized in that the microwave leakage prevention device comprises a boss-type microwave obstruction structure which extends along the vertical direction of a binding face of the contact part and the corresponding part of the front plate of the oven body, has the consistent appearance with the entrance of the cooking room, has a height high enough to block or reflect microwave leaking from a gap between the oven door and the oven body and is prepared from a material that microwave cannot pass through. According to the invention, the amount of leaked microwave is greatly reduced, and use security of human body is effectively guaranteed.

The invention relates to a multilayer protective low-smoke zero-halogen flame retardant fireproof control cable and a manufacture method thereof and belongs to the technical field of control cable manufacture. The technical scheme is that a fireproof mica layer (2) and a crosslinked polyethylene insulating layer (3) are sequentially arranged outside a copper conductor (1), and a polyester film wrapping belt (4), a metal shielding layer (5), an inner protective layer I (6), an inner protective layer II (7), an inner protective layer III (8), a metal armor layer (9) and an outer protective layer (10) are sequentially arranged outside the cable. The method adopts an aluminum belt embossing and double layer coextrusion mode, improves working efficiency and improves the quality of longitudinal wrapped aluminum tapes and extruded nylon. The cable adopts the 105 DEG C irradiation crosslinked polyethylene insulating layer, the temperature resisting level of the cable is improved, the mechanical performance of the cable is good, the tangent value of dielectric constant and dielectric loss angle is small, and the insulating electrical performance is excellent. Water or moist can be effectively prevented from entering the cable by adopting the embossing longitudinal wrapped aluminum tapes, simultaneously the cable has good shielding effect, the bending performance of the cable is ensured, and installation and using of the cable are facilitated.

The invention discloses an elevator access control system and method based on NFC technology, including an intelligent terminal, a card reader, an elevator control host and an elevator controller, wherein: the intelligent terminal has a built-in NFC module, and the identity information is transmitted through NFC communication Feedback to the card reader; the card reader feeds back the obtained identity information to the elevator control host; the elevator control host is used to: respond to the identity information and verify the identity in the card reading mode information, after the verification is passed, the authority of the corresponding user is confirmed, so that the corresponding elevator can be controlled by the elevator controller according to the corresponding authority. The elevator access control system of the present invention has the characteristics of safety, reliability, and convenient operation, and can effectively read the user identity information in the intelligent terminal with NFC function, which is convenient for managers to control the elevator; and only authorized users can use the elevator, strengthening The management and safety of elevator use have been improved.

The invention discloses a home furnishing consumable purchase order pushing system based on big data. The system comprises an initial parameter information collection module used for collecting brand information and initial parameter information of monitored consumables, a warning setting module used for setting a consumable warning value according to the initial parameter information of the monitored consumables, a current parameter information collection module used for collecting current parameter information of the monitored consumables, an information pushing module used for comparing the current parameter information of each monitored consumable with the consumable warning value and pushing consumable order information to a user terminal according to the brand information of the consumables when the current parameter information of any monitored consumable reaches the consumable warning value, and an order generation module used for receiving consumable purchase order confirmation fed back by the user terminal according to the consumable order information.

The invention discloses a temperature protection system for a power distribution cabinet, and the system comprises a cabinet body. The top of the cabinet body is provided with a fire alarm, and the interior of the cabinet body is provided with a main switch, a central processor, and a display. The central processor is disposed at one side of the main switch, and the display is disposed at one sideof the central processor. One side of the main switch is connected with an incoming cable, and the bottom of the main switch is provided with a relay. The main switch is connected with a relay through a busbar, and one end of the relay is provided with an outgoing cable. The incoming cable, the outgoing cable, one side of the busbar, and the inner wall of the cabinet body are provided with temperature sensors. The whole system employs a temperature sensor, and employs a CPU to process and output the information and is connected to a main switch control loop of the power distribution cabinet in a parallel manner. There is no need to add excessive electrical circuits and accessories. The system protects the use safety of the power distribution cabinet, and avoids the electrical fire more effectively.

The invention relates to a concrete road pavement structure which comprises a sidewalk pavement and a roadway pavement, wherein an isolation road edge is arranged between the sidewalk pavement and the roadway pavement; the sidewalk pavement comprises a first base soil layer; a first cement macadam base layer is laid on the first base soil layer; a first mortar layer is laid on the first cement macadam base layer; a water permeable brick layer is laid on the first mortar layer; the roadway pavement comprises a second base soil layer; a macadam sub-base layer is laid on the second base soil layer; a second cement macadam base layer is laid on the macadam sub-base layer; an asphalt seal layer is laid on the second cement macadam base layer; a concrete surface layer is laid on the asphalt seal layer; an embedded pipe is arranged in the macadam sub-base layer; a connecting reinforcing steel bar is arranged in the concrete surface layer just above the embedded pipe along the transverse direction; a kerf is formed in the concrete surface layer. The concrete road pavement structure has the advantages of being good in overall strength, low in construction difficulty and good in bearing capability.

The invention discloses an unmanned aerial vehicle intelligent charger. The unmanned aerial vehicle intelligent charger comprises an AC / DC unit, a DC / DC unit, a microprocessor, a balance charging module, a battery module, a battery module voltage detection unit, a USB power supply unit, a USB output charging jack, a voltage / current sensor, a keyboard, a display unit, a heat dissipation fan driving unit, a heat dissipation fan, a wifi unit, a USB interface, an isolated type communication interface chip and a thermistor sensor. Since an active balancing technology is employed, the charging efficiency and the charging speed are improved, and the service life and the safety of a lithium battery are effectively protected; the microprocessor is provided with the USB interface and supports program updating of hardware with a USB port or an SD card; the microprocessor is connected with the WIFI unit so as to realize such functions as real-time monitoring of a client through an mobile phone APP and the like; the microprocessor unit automatically adjusts and controls the size of DC / DC output signals according to the DC / DC output signals detected by the voltage and current sensor; by use of the isolated type communication interface chip, EMI (electromagnetic interference) is reduced, and the wiring length and the signal-to-noise performance of a system are greatly improved; and by use of the battery module voltage detection unit, each independent battery in the battery module can be monitored, and each battery is effectively controlled.

The invention discloses a high-voltage power-off strategy for a fuel cell vehicle, relates to the technical field of fuel cell vehicles, and specifically discloses a high-voltage power-off strategy for the fuel cell vehicle. The system comprises a vehicle control unit (VCU), an auxiliary energy source 1, an auxiliary energy source 2, a bidirectional DC, a starting switch, a low-voltage distribution box, a high-voltage power distribution unit (PDU), an electric drive unit (EDU), a hydrogen fuel system (FCU+HTMS) and a 12V storage battery; transmission and receiving of information are carried out through a CAN bus among ECUs, and the peculiarity of a control strategy is caused by a unique hydrogen fuel cell system of a hydrogen fuel cell vehicle. The high-voltage power-off strategy has the beneficial effects that a corresponding power-off flow is designed according to the electrical characteristic of the hydrogen fuel cell system is guaranteed, the stability and reliability of high-voltage power-off are guaranteed, the practicability, applicability and safety of the hydrogen fuel cell vehicle are improved, and the using requirement of people is met effectively.

A cleaning trough device for a treadmill conveyor belt is disclosed. Its structure includes: a cleaning tank body, a transmission seat, a moving wheel rod, a hand-holding pole support frame, an intelligent display, a motor and a running conveyor belt, the running conveyor belt is mounted on the outside of the transmission base and is in clearance fit with the transmission base, a left end of thattransmission seat is provided with a motor and is locked with the motor, at both end of that motor, so that that device can be use, by means of the separated brush cleaner mechanism, as a result, theinvention can be realized to avoid that in the running of the treadmill, the sole sand tends to stay on the treadmill conveyor grain, the surface of the accumulate conveyor belt is very dirty, the aesthetic effect is affected, because the run belt operation may be involved in the electric motor, the equipment breaks down, and a little wiping with a dishcloth is need manually when cleaning, the problem of time is wasted, so that the equipment cleans up dirt such as grain sand on the surface of the conveyor belt of the treadmill more quickly and conveniently.

The invention discloses a comparison device for magnetic field radiation sensitivity test equipment. The comparison device comprises an RS101 radiation antenna, a comparison module and a measuring device; the RS101 radiation antenna is used for radiating cable signals; the comparison module is used for coupling, extracting and amplifying the cable signals radiated by the RS101 radiation antenna ata connector interface or a free space on the basis of a transformer principle; the measuring device is used for measuring the magnitude of the cable signals outputted by the comparison module. According to the comparison device of the invention, the coupling, extraction and amplification of the cable signals radiated by the RS101 radiation antenna are realized by using the transformer principle;real-time monitoring and displaying are carried out through a frequency spectrograph; a transient suppression and protection circuit is designed on the power line of the comparison device, so that theuse safety of the rear-end frequency spectrograph and the comparison device can be protected; the cable signals radiated by the RS101 radiation antenna are extracted through coil mutual inductance; and a non-magnetic material and a low-permeability material are selected to process the comparison device, so that influence on the uniformity of a radiation magnetic field is reduced to the greatest extent.

The damping device for a new energy automobile comprises a first transverse plate and a first concave plate. The middle of the upper surface of the first transverse plate is fixedly connected with thefirst concave plate, and an elastic device is installed on the upper surface of the first transverse plate. According to the damping device for the new energy automobile, a battery pack, the first transverse plate, a second transverse plate, a toothed plate, a half gear and other structures are matched with one another, the influence of automobile vibration on the battery pack can be weakened andisolated, and the stability performance is enhanced; a connecting rod, a T-shaped rod, a battery pack, a second spring, a third spring, a first box body and other structures are matched with one another, the battery pack can be damped in multiple directions, the battery pack can be buffered and protected; and heat generated by the battery pack can be sucked out under the action of the exhaust fanthrough mutual cooperation of structures such as the second box body, the battery pack, a third transverse plate, an air outlet pipe and the exhaust fan, and the use safety of the battery pack is protected.

The invention belongs to the technical field of engineering articles, and discloses a system and a method for construction remote monitoring and management. A wireless transmission module, an alarm prompting module and an information informing module are jointly connected with a monitoring center management module. A video monitoring module is connected with a video image processing module. The video image processing module is connected with the monitoring center management module. A voice broadcast module is connected with a power monitoring center management module and a power energy storagemodule. A high-voltage prevention module is connected with the power energy storage module. The structure of the system can monitor construction site situations in real time. When accident occurs, the system can send out voice warning to workers by broadcasting, and can notify responsible personnel in a construction area to organize the workers to evacuate safely, to protect life safety of the workers, and effectively improve management level of safe construction of a project.

The invention provides a running machine safe and easy to fold. The running machine comprises a running machine body. The running machine body comprises a sports assembly, a rotary folding assembly, asupporting movable assembly, an adjusting assembly and a control console. The sports assembly comprises a base. A belt is installed on the base in a matched mode. The rotary folding assembly comprises a rotating box body. The supporting movable assembly comprises supports symmetrically arranged at the left end and the right end of the rotary box body. The two ends of the rotary box body are rotationally connected with the supports on the two sides through rotating shafts respectively. One end of each rotating shaft is fixedly connected with the corresponding support, and the other end of therotating shaft is matched with a speed reducer. The running machine has the advantages that the overall structural design is ingenious, by means of the rotary folding assembly, when the running machine is not used, the base can be driven by a motor and the speed reducer matched with the motor to upward rotate with the rotating shafts as the rotating center to be folded up, the folded running machine is then pushed to move through rotating wheels at the bottoms of the supports, the occupied space of the running machine is reduced, the running machine is convenient to move, and great convenienceis brought to consumers.

The invention provides a far-infrared food dryer, which includes a box body, a conveyor belt, a far-infrared heating pipe, an aspirator and a circulating fan, and is characterized in that: the box body is a rectangular cavity structure, and the box body is formed from A number of conveyor belts are arranged horizontally from bottom to top, and a number of far-infrared heating tubes are arranged above and below the conveyor belt. An aspirator is connected to the left side of the top of the box, and a circulating fan is connected to the right side of the bottom of the box. A material inlet is provided on the right side of the top of the box, and a material outlet is provided on the left side of the bottom of the box. The invention is simple in structure and novel in design. It adopts far-infrared heating mode and combines with the air circulation device in the equipment to effectively increase the drying speed. At the same time, the air extraction device in the equipment can discharge the water vapor in time. On the other hand, it protects the safety of equipment, prolongs its service life and reduces production costs.

A high-pressure flexible rubber hose and a manufacturing process thereof relate to the technical field of rubber products, in particular to a high-pressure flexible rubber hose and a manufacturing process thereof. The object of the present invention is to provide a high-pressure flexible rubber hose with tight connection between layers and strong pressure resistance. A high-pressure flexible rubber hose is characterized in that: it includes an inner rubber layer, and a high elastic rubber layer is arranged outside the inner rubber layer, and a non-woven fabric winding layer is arranged outside the high elastic rubber layer; In the rubber layer, the steel wire mesh is staggered in the middle rubber layer; the polyethylene film is arranged outside the middle rubber layer, and the protective armor is arranged on the outside of the polyethylene film.

The invention discloses a steam pipeline pressure measuring device which comprises a steam pipeline, a screwed connector, a pressure-guiding tube, a stop valve and a pressure gauge. The screwed connector is connected to the side surface of the steam pipeline; one end of the pressure-guiding tube is connected with the screwed connector, and the other end thereof is connected with the stop valve; the pressure gauge is connected at the tail end of the stop valve; and three thread connection holes are uniformly distributed in the same transverse surface of the circumference surface of the steam pipeline. Through the mode above, the steam pipeline pressure measuring device has the advantages of being accurate, simple, convenient, safe and reliable to measure; meanwhile, the device can measure whether the pressure in different directions in the pipeline is consistent, thereby ensuring use safety of the steam pipeline; and the device is mainly used for pressure measurement of the high-pressure steam pipeline with the temperature being 120-160 DEG C.

The invention discloses a vehicle-mounted burglar alarm system which comprises a mobile terminal and a vehicle-mounted detecting system, wherein the vehicle-mounted detecting system comprises a fingerprint identification module, a GPS (global position system) positioning module, a GPRS (general packet radio service) communication module and a vehicle-mounted processing module; the mobile terminal is in wireless communication connection with the vehicle-mounted detecting system; the fingerprint identification module, the GPS positioning module and the GPRS communication module are connected with the vehicle-mounted processing module respectively. The vehicle-mounted burglar alarm system has the benefits as follows: a person using a vehicle can be identified and monitored by the system; if the system detects that the vehicle is not operated by the owner, a vehicle owner is timely reminded, the vehicle is positioned, accordingly, tracing of the vehicle is facilitated, use safety of the vehicle is protected, and the case solving rate of vehicle theft cases is increased.

The invention discloses mountain region natural disaster monitoring and early warning vibration triggering type time efficiency monitoring equipment. The equipment comprises a placement external shell; the bottom of an inner cavity of the placement external shell is fixedly connected with a protection adjusting mechanism; a vibration triggering mechanism is fixedly connected to the middle positionof the top of the protection adjusting mechanism; an electromagnetic current trigger is fixedly connected to the bottom of an inner cavity of the spherical protective shell; a metal coil is arrangedon the inner surface of the inner cavity of the spherical protective shell; a permanent magnet ball is arranged at the bottom of an inner cavity of a protective inner ball; and an impact force detection plate is fixedly connected to the side, away from a limiting plate, of a supporting column. The invention relates to the technical field of natural disaster prevention. The whole structure is adjustable, effective protection is carried out based on the underground, biological damage to equipment and disposable use are avoided, the occurrence duration and width can be monitored through electromagnetic intermittent triggering so that the safety of personnel and assets can be estimated and protected more accurately, multiple different natural disasters can be monitored, and the application range can be widened.

The invention relates to the field of ship propulsion system design, and particularly discloses a two-stage longitudinal vibration isolation shafting which is provided with a propeller, a stern rear bearing, a stern light shell structure, a stern shaft, a stern front bearing, a pressure-resistant body structure, a stern shaft sealing device, a longitudinal vibration isolator, a vibration isolation thrust bearing, a middle shaft, a middle bearing, an elastic coupler, a propulsion motor and the like from the stern to the bow. By arranging the longitudinal vibration isolators and the vibration isolation thrust bearings, the whole shafting forms a two-stage longitudinal vibration isolation system, the mass ratio u of the two-stage vibration isolation system is designed to be 0.5-1, the mass ratio is increased as much as possible during design, the rigidity ratio is designed to be u + 1, and the shafting can have the better vibration isolation effect than a single-stage vibration isolation system at the middle-high frequency band except the second-order inherent frequency, and vibration noise generated by the ship tail propeller-shaft system is reduced.