14results about How to "Guaranteed security risks" patented technology

The invention relates to the technical field of satellite communication, and discloses a communication method and system for a long-voyage ship based on L frequency band communication, and the method comprises the steps: recognizing the navigation environment and communication demands of the long-voyage ship, recognizing the satellite signals of the long-voyage ship and a communication end through recognizing the frequency band characteristics of a communication frequency band, and carrying out the communication of the long-voyage ship; a signal tracking network of satellite signals is set, signal parameters of the satellite signals are monitored in real time according to the signal tracking network, a quality feedback mechanism of the signal parameters is set, the current signal quality grade is identified, and the signal quality requirements of the long-voyage ship and the communication end are identified based on the current signal quality grade; the method comprises the following steps: setting a multi-beam switching mechanism pointing to beams and a signal locking network of satellite signals, setting a confidential path for transmitting data, and generating a communication result of a long-voyage ship and a communication end in combination with the multi-beam switching mechanism, the signal locking network and the confidential path; according to the invention, the stability and safety of signal transmission can be enhanced, and the communication quality of the long-voyage ship is improved.

The invention discloses a nuclear power plant water system and a cooling method.The nuclear power plant water system comprises a plurality of series and non-safety-level pools, each series is provided with a safety-level pool, the safety-level pools are communicated pairwise, and each series has a first working condition and a second working condition; the sum of the water quantity borne by any two safety-level pools can be at least used for the system to operate for 3 days under the second working condition. The non-safety-level water pool can at least store water for the system to operate for 27 days under the second working condition. Water resources stored in the non-safety-level water pool and the safety-level water pool can be flexibly allocated to different series according to actual needs, idling and waste of the water resources are avoided, the requirement for the total water storage amount is effectively reduced, and therefore the building and maintaining cost of the water pool is reduced. Reduction of the total water storage capacity of the nuclear power plant means that occupation and consumption of land and water resources in the pool building process are reduced.

The invention relates to the technical field of unmanned driving, automatic driving and unmanned vehicles, and discloses an unmanned vehicle control method and device on a bumpy road surface, an unmanned vehicle and a storage medium. The method comprises the following steps: determining a driving control strategy of the unmanned vehicle according to the bumping degree of a current road surface; under the condition that the driving control strategy represents that the unmanned vehicle needs to be controlled to decelerate, a vertical bumping characteristic signal set representing the bumping degree within a preset distance range is obtained; calculating a longitudinal acceleration constraint corresponding to each vertical bumping characteristic signal in the vertical bumping characteristic signal set based on a linear mapping relationship between the longitudinal acceleration and the vertical bumping characteristic signal, and screening a maximum longitudinal acceleration constraint; and based on the maximum longitudinal acceleration constraint, determining a target vehicle speed after the unmanned vehicle is decelerated, and controlling the unmanned vehicle. According to the invention, intelligent recognition and self-adaptive speed control of the unmanned vehicle on the bumpy road surface are realized, so that the vehicle can automatically adjust the driving speed according to the road surface bumpy degree detected in real time.

The embodiment of the invention relates to the technical field of batteries, and particularly discloses a single battery and a battery pack, and the single battery comprises a shell provided with an accommodating cavity; the electrode assembly is arranged in the accommodating cavity; the top cover is connected to one side, in the first direction, of the shell and covers and seals the containing cavity, and a liquid injection hole is formed in the top cover; the insulating component comprises an insulating main body, a plurality of flow guide parts and a plurality of first flow blocking parts, the insulating main body is provided with a through hole, and the through hole is communicated with the liquid injection hole; the multiple flow guide parts surround the periphery of the through hole to form a flow guide channel with an opening, the flow guide channel is communicated with the through hole, and the flow guide channel is communicated with the containing cavity through the opening; the first flow blocking part blocks part of the opening. According to the invention, the tab of the electrode assembly is prevented from extending into the through hole and being in contact with the top cover to cause short circuit of the single battery, the risk of short circuit between the electrode assembly and the top cover is reduced, and the safety performance of the single battery is ensured.

The present invention relates to the field of button-making machines, and in particular to a fully intelligent silent button-making machine, comprising a processing table, a main body being provided on the processing table, a support seat, a bottom button guide mechanism, a face button guide mechanism, an ejector transmission mechanism, a punching mechanism and a driving mechanism being provided on the main body. The present invention can realize energy-saving, low-noise and low-vibration button-making work by driving the bottom button guide mechanism, the face button guide mechanism, the ejector transmission mechanism and the punching mechanism by a servo motor, and can realize the fixing of the face button and the bottom button by the cooperation of the bottom button guide plate of the bottom button guide mechanism and the face button guide plate of the face button guide mechanism, so that the face button and the bottom button can be directly pressed onto the cloth at the same time by the ejector of the ejector transmission mechanism and the punching needle of the punching mechanism, thereby effectively ensuring the safety hazards of workers and improving the button-making efficiency, and at the same time, by the action of the brush wheels of the face button and the bottom button, it can prevent the face button and the bottom button from being damaged.

The utility model provides a facility for preventing a water area around a tailing pond drainage well from freezing in winter, and belongs to the technical field of anti-freezing facilities for water areas around tailing pond drainage wells. A drainage well is located in the center of a floating bridge platform, two vertical dredging pumps are hung on the outer side of the floating bridge platform, symmetrically arranged and kept in a one-open and one-standby state, and butterfly valves are installed at outlets of the vertical dredging pumps and connected with an annular pipeline through connecting elbows; the annular pipeline is laid on the edge of the floating bridge platform, a plurality of branch pipes are evenly distributed on the annular pipeline, and ball valves are installed at inlets of the branch pipes. A certain area around the drainage well and the floating bridge platform can be in an unfrozen state throughout the year, potential safety hazards caused by direct or indirect extrusion and impact of a freezing layer on the drainage well frame body are avoided, and safety and stability of the drainage well structure are guaranteed.

The utility model discloses a kind of heating furnace door operating devices for bar, belong to bar production technical field, including the bracket trolley being set on track, bracket trolley is provided with furnace door body, bracket trolley is connected with driving component, furnace door body and bracket trolley are moved along horizontal direction on track under the driving of driving component, realize to open and close to furnace mouth;Bracket trolley includes bracket bottom plate and the roller being set on the end surface of bracket bottom plate, roller is cooperatively arranged in track, and positioning hole is arranged on the bracket bottom plate of furnace door body installation position;The lower end of furnace door body is provided with connecting component, and furnace door body is detachably connected with bracket bottom plate by the cooperation of connecting component and positioning hole.The utility model solves the safety hidden danger existing in person caused by the maintenance personnel of existing maintenance furnace door connecting iron chain, avoids the emergence of the fire out phenomenon caused by the fact that furnace mouth is not covered by furnace door cover after being scraped by steel billet, and reduces energy loss problem.

The application discloses a greening box, a bridge, and an application method for spanning bridge expansion joints, relating to the field of bridge landscaping. It includes base stones placed on both sides of the same expansion joint on the bridge deck, forming a receiving space spanning the expansion joint. A greening box for holding plants is placed within this space. Green plants are planted inside the box, integrating with other green belts on the bridge deck to ensure the integrity of the greening and enhance its protective function. The top of the greening box also features an inward-facing folded surface and a folded lug. The folded surface is at the same height as the base stone, maintaining the continuity of the base stone and improving aesthetics while preventing pedestrians from falling and hitting the greening box. The folded lug provides support and protection for the green plants inside the box, preventing them from tipping over in extreme weather and further improving the neatness of the greening. A damage-resistant pad is placed at the contact point between the greening box and the base stone to prevent wear and tear on the bottom of the greening box when the base stone deforms and shifts with the bridge deck.

The invention relates to the technical field of keyboard assembly, in particular to an assembly operation device for keyboard assembly, which comprises a workbench, the bottom of a support frame is fixedly connected with a clamping plate, and the bottom of the supporting plate is fixedly connected with a plurality of supporting springs. According to the assembly operation device for keyboard assembly, when a pedal is treaded, a sliding block is pressed downwards through a concentric-square-shaped frame, so that the sliding block drives an assembly plate at the bottom of a receding frame to assemble a keyboard in a mold box, meanwhile, the sliding block slides along a penetrating groove, a fixing spring in a fixing groove is compressed, and when a foot is loosened, the keyboard can be assembled. The device is supported through the elastic force of the fixing spring and the supporting spring, continuous treading can be carried out, a keyboard in a mold box can be continuously assembled, the situation of manual downward pressing still exists in the assembling process, some potential safety hazards exist in the hand pressing process, the potential safety hazards can be avoided by treading with feet, and the assembling efficiency is improved. And the safety of a user is ensured.

This utility model provides a building envelope structure, comprising: multiple cell units fixed to the exterior facade of a building; each cell unit includes a right-angled trapezoidal top surface and a right-angled trapezoidal base surface respectively on the same plane as the upper and lower floors; a first side surface located between the lower bases of the right-angled trapezoids on the top and bottom surfaces; a second side surface located between the upper bases of the right-angled trapezoids on the top and bottom surfaces; and a front surface located between the sloping sides of the right-angled trapezoids on the top and bottom surfaces. The front surface is covered with tempered glass. The first side surface is provided with a fixed tempered glass pane and an aluminum alloy window sash disposed on the fixed tempered glass pane. A composite perforated plate covering the fixed tempered glass pane and the aluminum alloy window sash is also provided on the outer side of the first side surface. This utility model's building envelope structure has the advantages of low energy consumption and low noise.

The present invention discloses a multi-flywheel automatic test monitoring system, the system comprising: a data acquisition module, for collecting information of a flywheel device to be tested, and real-time collection of operating parameters of the flywheel device to be tested; a data processing module, for preprocessing the operating parameters of the flywheel device to be tested; an evaluation module, for inputting the information of the flywheel device to be tested and the preprocessed operating parameters into a pre-trained fault diagnosis model for fault evaluation, and outputting evaluation results; a control module, for matching preset operating instructions based on the evaluation results of the fault diagnosis model. Through the processing scheme disclosed in the present invention, faults and problems in the system can be discovered in a timely manner, ensuring that the flywheel energy storage device always maintains good performance and reliability, extending service life, improving safety, and optimizing energy management.

The invention relates to a dismounting and mounting correction method and correction device for a fusing emergency valve. The bolt dismounting and mounting method comprises the steps that S1, the fusing emergency valve is closed, a balance valve is opened, and a ground well refueling plug releases pressure; s2, a ground well refueling bolt is dismantled, a fusing emergency valve is opened, and a ground well oil conveying pipeline releases pressure; s3, the flange between the ground well oil conveying pipeline and the fusing emergency valve is sleeved with the dismounting and mounting correction device, and mounting of the dismounting and mounting correction device is completed; s4, the offset of all connecting bolts on the flange is obtained; s5, performing sum calculation on the obtained offsets of all the connecting bolts to obtain an offset average value, recording the offset average value as N, and adjusting the connecting bolts of which the offsets are greater than the sum of N and a preset value; and S6, after the offset of the connecting bolts is adjusted, all the connecting bolts are dismantled, and replacement of the fusing emergency valve is completed. The offset of the connecting bolt is obtained and corrected through the offset correction bolt, disassembly and assembly of the connecting bolt between the well oil conveying pipeline and the fusing emergency valve are efficiently completed, and the fusing emergency valve is replaced in time.

The invention relates to the technical field of cables, in particular to a fireproof cable production process, and a cable produced by the fireproof cable production process sequentially comprises a conductor, a ceramic polyolefin fireproof layer, a mica heat insulation layer, an inner sheath, an armor layer and an outer sheath from inside to outside. The conductor is formed by pressing and twisting three strands of conductive wire cores, and further, each conductive wire core sequentially comprises a copper core body, an inner shielding layer, an insulating layer, an outer shielding layer and an isolating layer from inside to outside. The cable produced by the invention is good in fireproof and high-temperature-resistant performance, safe and reliable, strong in anti-electromagnetic interference performance, convenient to construct and long in service life.

The invention discloses a wheel and vehicle body frame separated structure which comprises an inner edge beam and a threshold outer plate arranged on the outer side of the inner edge beam, a floor front cross beam is arranged on the right side of a seat rear cross beam, and connecting beams are arranged among the seat front cross beam, the seat rear cross beam and the floor front cross beam. A T-shaped connecting piece is arranged at the joint of the connecting beam and the seat front cross beam, a cross-shaped connecting piece is arranged at the joint of the connecting beam and the seat rear cross beam and the joint of the connecting beam and the floor front cross beam, a T-shaped groove is formed in the T-shaped connecting piece, and a cross-shaped groove is formed in the cross-shaped connecting piece. A plurality of mounting holes and reinforcing ribs are arranged on the T-shaped connecting piece and the cross-shaped connecting piece, so that potential safety hazards caused by flaws and defects such as burn-through, air holes and the like which are easy to occur at the joint of the aluminum alloy frameworks when the aluminum alloy frameworks are connected in a spot welding and burn-in manner can be effectively reduced; and the safety and the stability of the vehicle body frame are greatly improved.