47results about How to "Guaranteed to work properly" patented technology

The invention relates to a method and device for pushing recommendation information. The method includes the steps that a local area network to which a first terminal is connected is determined; an MAC address of a second terminal in the local area network is inquired, wherein the second terminal is any terminal in the local area network except for the first terminal; an inquiry command of recommendation information corresponding to the MAC address is sent to a server, wherein recommendation information is user behavior information generated on the second terminal by the server; when the recommendation information, corresponding to the MAC address, sent by the server is received, the recommendation information is displayed on the first terminal. Due to the fact that the first terminal and the second terminal are both in the same local area network, it shows that a user of the first terminal and a user of the second terminal are the same user, the recommendation information, corresponding to the MAC address of the second terminal, prestored in the server is sent to the first terminal for display, and it can be guaranteed that the recommendation information pushed to the first terminal is suitable for the user owning the first terminal.

The invention discloses an electric transmission system of a dual-power metro grinding car. The electric transmission system comprises a high-voltage electric appliance box, an electric reactor, a traction inverter, a traction motor, an auxiliary power generator, a three-phase rectifier cabinet, a grinding inverter and a grinding device, wherein power can be supplied to the traction motor and the grinding inverter through a contact grid, or power can be supplied to the traction motor and the grinding device through the auxiliary power generator. The invention further provides a power switching method for the dual-power metro grinding car. According to the method, seamless switching of the power supply between the contact grid and the auxiliary power generator can be realized. The electric transmission system has the advantages of being convenient to maintain, lower in energy consumption and pollution, and friendly to the environment; the power switching method has the advantages that the dual-power metro grinding car needs not to be shut down in the switching process, the flexibility and the convenience are guaranteed, the voltage is kept stable during the switching of the power supply, and the normal operation of the dual-power metro grinding car is not impacted.

The invention discloses a power-saving controller for delaying outage. The power-saving controller is capable of automatically detecting shutdown or abnormal power-off signals of a power device with high power and enables the power device to be disconnected with a supply network in the set time, and the requirement of users for using a power device with small power in a short time can be met while the power is saved and used safely. After being triggered, at first, the power-saving controller connects the supply network with the power device, and meanwhile, an outage delay progress in the power-saving controller starts working; the outage delay progress is used for timing, and in the timing process, if the power of a supply line is smaller than a preset threshold value all the time, the power device and the supply network are disconnected when the delay time t is reached; if the power is larger than the threshold value, the outage delay progress is automatically stopped; hereafter, the power of the supply line continues to be detected, and once the power is smaller than the threshold, the outage delay progress is restarted again.

The invention discloses a method and device for controlling range extender starting and a range extending type electric vehicle, and relates to the technical field of electric vehicles. The purpose isto determine whether a range extender is controlled to be started or not according to the current environment where the range extending type electric vehicle is located, so that it is ensured that the range extending type electric vehicle can be suitable for the environment having strict requirements for exhaust emission and noise pollution. The method includes the steps of receiving current position information, sent by a car navigation system, of the range extending type electric vehicle; obtaining the current remaining power of a power battery, and determining whether preset conditions forstarting the range extender are met or not according to the current remaining power and the current position information; and if the preset conditions for starting the range extender are met, controlling to start the range extender. The method and device are applicable to the start-up process of the range extender controlled by a vehicle controller VCU.

The invention provides a double sealing structure of a disc brake and belongs to the technical field of machinery. A problem that the sealing effect obtained by an existing double sealing structure ofthe disc brake is not ideal can be solved by the structure. The disc brake comprises a caliper body, rotating units axially limited into the caliper body, and screw rods connected to the interiors of the rotating unit by threads, the lower ends of the screw rods penetrate out of the lower end of the caliper body and the rotating units can rotate relative to the screw rods; the double sealing structure comprises a sealing unit II and a sealing unit I which is positioned between the caliper body and the lower ends of the screw rods and can deform along with the movement of the screw rods, therotating units are sleeved with the sealing unit II, the outer side of the sealing unit II is fixed in the caliper body, the inner side of the sealing unit II is provided with an annular sealing portion with elasticity, and the inner wall of the annular sealing portion always abuts against the outer side walls of the rotating units under the elastic force. The double sealing structure of the discbrake has the advantages of simple structure, long service life, good sealing effect and the like.

The invention discloses an optical machine assembly of projection equipment and the projection equipment, relates to the technical field of the projection equipment, and aims to solve the problems that the definition and the resolution of a projection picture are reduced after the existing projection equipment works for a period of time, and the picture quality requirement cannot be met. The optical machine assembly of the projection equipment comprises a digital micro-mirror element, a galvanometer assembly, a shielding piece and a heat dissipation device, wherein the galvanometer assembly comprises a galvanometer, the galvanometer is located on the light path of first reflected light, the first reflected light is the light reflected when a micro lens of the digital micro-mirror element is in an on state, the shielding piece is located on the light incident side of the galvanometer assembly, located outside the light path of the first reflected light and located on the light path of second reflected light so as to shield the second reflected light, the second reflected light is the light reflected when the micro lens of the digital micro-mirror element is in an off state, and theheat dissipation device is used for dissipating heat of the shielding piece. The optical machine assembly can be used in the projection equipment.

The invention discloses a multi-unmanned aerial vehicle base station three-dimensional coordinate calculation method under a channel estimation error. According to wireless transmission characteristics of an air-ground link between an unmanned aerial vehicle base station and a ground user, a probability-based unmanned aerial vehicle air-ground link channel error model is established, and a multi-unmanned aerial vehicle base station three-dimensional coordinate optimization problem taking a ground user coverage rate as an optimization target and taking a signal transmission interruption probability as a constraint condition is constructed. An unmanned aerial vehicle base station signal transmission outage probability analytical expression under a channel estimation error is deduced; a proposed macro Q inverse function approximate calculation method is combined; obtaining a dominant expression between the pitch angle and the coverage radius of the unmanned aerial vehicle base station; furthermore, the three-dimensional coordinate optimization problem of the unmanned aerial vehicle base station is equivalently split into two sub-optimization problems taking a pitch angle and a groundtwo-dimensional coordinate as optimization variables, and a combined iterative algorithm based on a Newton method and a sequence convex approximation method is provided, so that the three-dimensionalcoordinates of the multiple unmanned aerial vehicle base stations under the maximum user coverage rate can be effectively calculated.

The invention relates to a slag salvaging path planning method for a slag salvaging robot, and belongs to the technical field of hot galvanizing production processes and methods. According to the technical scheme, a slag salvaging working area in a zinc pot is divided into four areas at equal intervals along the stroke of the pot in the long edge direction, and the four areas are sequentially a first slagging-off area, a first slag salvaging area, a second slag salvaging area and a second slagging-off area from left to right. The slag salvaging path planning method has the beneficial effects that the slag salvaging working area is reasonably divided, the slagging-off and salvaging division of each area is clear, the stroke distance of slag salvaging is shortened, and the slag salvaging working efficiency of the slag salvaging robot is improved; meanwhile, the situation that zinc dross is bonded with the edge of the pot due to an original method is avoided, and normal work of functionsof robot equipment is guaranteed; and the cleanliness of the zinc liquid level after slag dredging operation is remarkably improved, stable operation of a production line is guaranteed, and the methodis suitable for application and popularization in the cold-rolling coating industry.

The invention discloses a joint-control board centralized control circuit system applied to indoor and outdoor units. The system comprises an outdoor unit and n indoor units, wherein an MCU is disposed inside the outdoor unit; an MCU is disposed in each indoor unit; the MCUs of all the indoor units are electrically connected to the MCU of the outdoor unit via a joint-control board centralized control circuit; the joint-control board centralized control circuit comprises n relays A and n relays B; the n relays B are in one-to-one correspondence with the MCUs of the n indoor units; and the n relays B are in one-to-one correspondence with the n relays A. Through application of the system disclosed by the invention, switching-on an switching-off signals of the multiple indoor units can be conveyed by a hardware circuit in an accurate and centralized manner in actual engineering, so that possible wrong judgments of the outdoor unit generated because the signals can be disturbed easily during communication conveying of the switching-on and switching-off signals can be avoided. In this way, normal and correct running of a whole air conditioner system can be ensured.

The invention relates to a new energy uncertainty planning method considering typical scene tolerance, and the method comprises the following steps: S1, carrying out the calculation according to the wind speed and illumination intensity data, and obtaining an RDG daily output curve sample; S2, randomly selecting a curve from the sample as a first curve in the initial center; S3, constructing an initial center; S4, calculating Euclidean distances from the remaining curves to K clustering centers , dividing the remaining curves into the corresponding clustering centers, and generating a K-classcurve set; S5, updating K clustering center curves; S6, judging whether a convergence condition is met or not; S7, adopting different K value clusters, calculating contour parameters of correspondingresults, and selecting an optimal cluster K value; S8, constructing a planning objective function, and establishing constraint conditions of the objective function; and S9, obtaining an optimal planning scheme of the renewable distributed energy by using a multi-objective optimization algorithm. The method guarantees that the planning result is suitable for as many operation scenes as possible.

The invention discloses a leveling control method and a leveling control system for a bearing base. The method comprises the steps that supporting legs for supporting the bearing base are controlled to extend, whether each supporting leg reaches preset torque or not is judged in real time, if not, the supporting legs are controlled to continue to extend, and if yes, the supporting legs are controlled to stop extending; whether the inclination angle of the bearing base reaches preset precision or not is judged, if yes, leveling of the bearing base is ended, and if not, the next step is carried out; and the supporting leg with the maximum elongation is used as a reference supporting leg. Compared with the prior art, the method and system have the advantages that the bearing base can be automatically leveled, so that the mounting angle of equipment mounted on the bearing base meets the precision requirement, the operation error of the equipment is reduced, if the gravity center of the equipment is changed during operation and the angle of the bearing base is changed, the bearing base leveling control method and system can carry out adjusting in time, the bearing base is adjusted to be horizontal, and normal work of the equipment is guaranteed.

The invention discloses a device for treating shale gas wastewater based on a disc tube type reverse osmosis membrane, which comprises a shell. An upper pressing plate and a lower pressing plate are arranged in the shell, a central screw rod is vertically arranged at the central position of the upper pressing plate and the lower pressing plate, and a clear water outlet is formed in the side surface of an upper positioning cushion block above the central screw rod. The upper plane of the upper pressing plate is respectively provided with a water inlet, a flushing water supply pipe and a concentrated solution outlet, the lower pressing plate is provided with a flushing water drainage pipe, an S-shaped flow guide disc and a membrane are arranged between the upper pressing plate and the lower pressing plate, one end of the membrane is horizontally arranged between the clamping blocks, and springs are arranged at the contact positions of the clamping blocks and the membrane. A clear water channel is arranged between the clamping block and the central screw rod, the clear water channel extends upwards to be communicated with a clear water outlet, a plurality of convex points protruding outwards are evenly arranged on the surfaces of the flow guide discs, and the membrane is horizontally arranged between the flow guide discs. The device has the advantages of high pollution rejection rate, good purification effect, long service life of the membrane, easy maintenance, and low investment and operation cost.

The invention relates to a safe and reliable miniature electronic water pump which comprises a support and a pump head. The support is provided with two installing through holes. Each installing through hole is provided with an installing mechanism. Each installing mechanism comprises an installing bolt matched with the corresponding installing through hole, and a stabilizing assembly arranged on the corresponding installing bolt. In the safe and reliable miniature electronic water pump, a first supporting pillar and a second supporting pillar are arranged on the two sides of each installing bolt. Meanwhile, a limiting column on a sealing plate is matched with a limiting groove so that the sealing plate can be firmly fixed above the installing bolts, thus, firmness of electronic water pump installation is improved, and reliability of electronic water pump work is improved. Moreover, when the support is installed on the installing face, an inverted-V-shaped open groove in the bottom of a buffering block begins deforming, and it is ensured that the buffering block can be attached to the installing face totally. Meanwhile, two limiting plates are used for limiting a buffering plate, the buffering plate can be vertically attached to the installing face, and thus it is ensured that the support can be suitable for various installing faces.

The invention discloses fixing equipment for solid wood floor paint spraying machining. The fixing equipment for solid wood floor paint spraying machining comprises a fixing seat, and the fixing seatis connected with a protective shell through bolts; a transversely-arranged connection rod is fixedly installed at the top end of the interior of the protective shell, and the two ends of the connection rod are slidably connected with fixing frames; the top ends of the fixing frames are fixedly connected with clamping plates through strengthening rib plates, and the bottom ends of the two fixing frames are rotationally connected with a first rotary wheel and a second rotary wheel through rotary shafts correspondingly; and the lower end surface of the center of the connection rod is fixedly provided with a convex block. According to the fixing equipment, by arranging a first rotary wheel, a second rotary wheel, the fixing frames, the connection rod, a first gear and a second gear, the firstgear is in engaged connection with the second gear, thus, a first winding roller and a second winding roller rotate reversely, the fixing frames and the clamping plates are pulled to slide towards the center of the connection rod, and a solid wood floor can be clamped and fixed.

The invention provides a photoelectric composite cable used for a coal mine, relates to a cable, in particular to a signal and electric energy transmitting cable used for a mine vertical shaft. The cable comprises mutually twisted insulated cable cores, a fiber optics bundle is arranged between the twisted insulated cable cores, a polyethylene inner sheath layer is arranged outside the twisted insulated cable cores, a steel wire armoured layer is arranged outside the polyethylene inner sheath layer, a blue flame retardant PVC outer sheath layer is arranged outside the steel wire armoured layer, and packing is arranged between the twisted insulated cable cores and the polyethylene inner sheath layer. The cable has a good signal transmission effect, and is strong in anti-pulling performance.