124results about How to "Prevent overloading" patented technology

The invention provides a multifunctional composite core aluminium stranded wire and a cable, relating to an aluminium stranded wire and a cable, aiming at solving the problem that the existing composite core aluminium stranded wire has no pre-warming function on temperature or stress. The invention is provided with three proposals. In proposal one, the aluminium stranded wire is arranged outside the internal core of the composite material and a temperature and stress sensing light guide fiber is arranged inside the internal core of the composite material; in proposal two: an external core is arranged outside the internal core of the composite material; the aluminium stranded wire is arranged outside the external core; the temperature and stress sensing light guide fiber is arranged between the internal core and the external core; in proposal three: the external core is arranged outside the internal core of the composite material; the aluminium stranded wire is arranged outside the external core; the temperature and stress sensing light guide fiber is arranged inside the external core. The cable is formed by coating an external coating layer on the external surface of the aluminium stranded wire arranged the temperature and stress sensing light guide fiber in the external core. The aluminium stranded wire and the cable monitor and pre-warn the temperature and stress of leads which are used for construction of line in real time by the temperature and stress sensing light guide fiber, so as to prevent the line from exceeding the load and allowable usage temperature.

Disclosed is a control pedal support structure, which comprises a pedal bracket 3 fixed to a dash panel to extend in a rearward direction of a vehicle body, and a pedal body 2 swingably supported relative to the pedal bracket 3 through a pedal pivot shaft (first pivot shaft) 13 mounted to the pedal bracket 3 to extend in a lateral direction of the vehicle body. In the support structure, the pedal bracket 3 includes a mount hole zone 14 for mounting thereon the pedal pivot shaft 13, and a support zone 20 located below the mount hole zone 13 and adapted to support the pedal pivot shaft 13 from therebelow. The support structure includes dropping means adapted, during a vehicle collision, to deform the support zone 20 so as to allow the pedal pivot shaft 13 to be dropped below the mount hole zone 14. The present invention is capable of maintaining a desirable operational feeling of a pedal body in a normal state, and effectively preventing a rearward movement of a foot pad during a vehicle collision in a simplified mechanism to reduce a load to be imposed on driver's foot.

The invention discloses a vehicle-mounted weighing system of a freight train as well as a weighing method. The weighing system comprises a weighing sensor, a connecting cable and a vehicle-mounted intelligent terminal, wherein the vehicle-mounted intelligent terminal consists of an ARM embedded controller unit, a power supply unit, a positioning unit, a wireless data transmission unit, a digital I/O interface unit, a weighing signal amplifying and conditioning circuit, an analog-digital conversion circuit and a data storage unit. A bogie strain-based indirect type weighing method is adopted bycombining the own structure of a rail wagon. For the safe working characteristic of railway freight, the weight of the wagon is monitored in real time in the loading, transportation and unloading processes of the freight train, and whole-course dynamic weighing of the whole wagon and the whole route is realized. The vehicle-mounted weighing system has remote monitoring and failure diagnosis functions, is high in measuring result precision and stability, has the characteristics of reliable performance, low cost of monitoring equipment and low requirements on mounting and use conditions, and iseasy to popularize and use.

The invention provides a non-growing season grass and livestock balance evaluation method based on an unmanned aerial vehicle LIDAR aerial survey technology. The defect that dry vegetation and herbivorous animal information cannot be monitored through traditional satellite remote sensing can be effectively overcome; grassland balance monitoring is carried out for grassland in a withered grass period; the method comprises the following steps: classifying LIDAR point cloud data of the unmanned aerial vehicle based on a terrain extraction method of slope-angle-distance limitation, and calculatinggrassland vegetation coverage and canopy height in a non-growing season according to ground points and vegetation points obtained by classification to realize grassland above-ground biomass inversionin the non-growing season; based on an object-oriented and supervised classification method, obtaining parameters such as an available forage grass proportion and a grassland reasonable utilization rate, and calculating a theoretical livestock capacity; calculating the actual livestock capacity according to the herbivorous animal types, the herbivorous animal quantity and the sheep unit conversion formula of each animal; and finally, according to the theoretical livestock carrying capacity and the actual livestock carrying capacity, calculating the overload rate, the available days of the remaining forage grass and the forage grass amount needing supplementary feeding, and completing the evaluation of the non-growing season grass and livestock balance condition.

The invention relates to a low-frequency low-voltage combined load shedding method. Mainly by using frequency and voltage response information measured on a load bus, on the basis of considering the load characteristic and the frequency-voltage interactive influence, a load shedding amount of low-frequency load shedding and a load shedding amount of low-voltage load shedding are respectively calculated, the bigger one thereof is used as an actual load shedding amount, and system frequency and load voltage are restored to rated values as soon as possible after disturbance by gradually shedding the load. The low-frequency low-voltage combined load shedding method can provide a guarantee for frequency stability and voltage stability of a power system under serious disturbance.

The invention provides a multifunctional variable cross-section lining trolley for a tunnel. The multifunctional variable cross-section lining trolley comprises a triangular support system, a formwork system, a full-hydraulic system, a concrete distribution system, a travelling system and the like, the formwork system comprises side formworks and a middle variable cross-section formwork, the cross-section sizes of the side formworks on two sides are invariable, the middle variable cross-section formwork is arranged at the center of the top of a tunnel lining, and the width of the middle variable cross-section formwork is variable. By the aid of the lining trolley, factory-like production of the tunnel lining trolley and standardization of components can be realized, the overall weight of the trolley is decreased by 20%, labor intensity is reduced, and working efficiency is improved.

The invention discloses an auxiliary device for safe traveling of vehicles, comprising optical-fiber bending sensing units which are distributed between a frame and an axle of an assisted vehicle or distributed on a suspension device, wherein each optical-fiber bending sensing unit comprises a curve-shaped test channel and a test processing unit; the curve-shaped test channel is used for leading signal optical fibers to penetrate through; the test processing unit is connected with the signal optical fiber; the test processing unit is connected with a central control unit ECU (electronic control unit) of the assisted vehicle; the curve-shaped test channel comprises a curve-shaped bracket, a plurality of A-side deformed teeth and a plurality of B-side deformed teeth, and the plurality of A-side deformed teeth and the plurality of B-side deformed teeth are continuously distributed on the curve-shaped bracket, and are distributed in a staggered manner; and the curve-shaped channel for leading one or more signal optical fiber(s) to penetrate through is formed between the heads of the plurality of A-side deformed teeth and the plurality of B-side deformed teeth. In the auxiliary device, the structure is simple, the design is reasonable, the manufacture is convenient, the cost is low, the use mode is flexible, the sensitivity is high, the use effect is good, the practical value is high, the safety and the comfort level of the vehicle can be effectively improved and the application prospect on the market is wide.

The invention discloses an overload preventing transmission device comprising a first transmission shaft, a cylindrical shell, strong permanent magnets, a hollow chamber, a circular baffle plate, rolling balls and a second transmission shaft. The first transmission shaft and the second transmission shaft are connected with the cylindrical shell through a bearing. One end of the first transmission shaft is provided with the hollow chamber. One strong permanent magnet is arranged in the hollow chamber. One end of the hollow chamber is sleeved by the circular baffle plate. One end of the circular baffle plate is provided with one circular baffle plate. The other end of the circular baffle plate is connected with one end of the second transmission shaft through the rolling balls. According to the overload preventing transmission device, the rolling balls are separated from grooves when rotating force from the second transmission shaft is greater than the effect of repulsive force between the strong permanent magnets through the effect of the repulsive force between the strong permanent magnets so that the second transmission shaft is enabled to stop rotating, and then the overload phenomenon of a motor can be prevented.

The invention discloses a room-type cleaning material separation unit which comprises a material receiving dust removal device, a material conveying mechanism, a material collecting mechanism and a discharging room. A dust removal device for dust removal is arranged inside the discharging room. An air suction dust removal device is arranged at the side position of the discharging room. The material conveying mechanism comprises a linear conveying belt and a slope conveying belt. The upper portion of the linear conveying belt and the upper portion of the slope conveying belt are provided with spraying nozzles. The slope conveying belt is connected with the material collecting mechanism. A weight monitoring device is arranged at the bottom of the linear conveying belt and connected with a control system.

The invention discloses a load control device for an attached lifting scaffold, which comprises an electric control system and a sensor, wherein the sensor is electrically connected with the electric control system; and the electric control system is provided with a program for controlling the operation of a power unit of the attached lifting scaffold. The load control device is characterized in that the sensor comprises a piston shell and a piston rod, the piston shell is connected with a lifting beam of the attached lifting scaffold, the piston rod is connected with an electric block, an oil duct outlet is arranged in the piston cavity on the lower end of the piston rod and connected with the inlet of a controllable hydraulic non-return valve through a pipeline, the outlet of the controllable hydraulic non-return valve is connected with a transparent oil pipe, the transparent oil pipe is provided with a photoelectric switch for detecting the liquid level, and the photoelectric switch is electrically connected with the electric control system; and the controllable hydraulic non-return valve is provided with a control device which controls oil to flow from the inlet to outlet or from the outlet to inlet in a single direction. By adopting the technical scheme, the lifting load of the scaffold can be effectively limited, and overload and danger are prevented.

The invention discloses a water seepage and flood drainage system based on a sponge city. The water seepage and flood drainage system comprises an artificial wetland, wherein the artificial wetland is connected with a buffer tank by virtue of a second water pipe, and the buffer tank is connected with a river by virtue of a first water pipe; the artificial wetland is successively provided with a sterilizing layer, a first isolation layer, a water storage layer and a planting layer from bottom to top; soil is arranged in the planting layer, and emergent aquatic plants are planted on the planting layer; coarse sand is arranged in the water storage layer; a mud separation plate for blocking mud and sand is arranged in the first isolation layer, and the mud separation plate is wrapped with geotechnical cloth; and a plurality of volcanic rocks are arranged in the sterilizing layer. The water seepage and flood drainage system based on the sponge city solves the problem that the rainy and flood water is difficult to seep and accumulate for use; and meanwhile, the system can effectively alleviate the flood leak pressure of a river, can improve the convenience of the municipal water application and can realize a function of seeping, collecting, purifying, storing and utilizing the river water and rainy water.

A home power cabinet panel is provided to supply a supply voltage in a normal status and an emergency power in an abnormal status by including a power switching unit in the home power cabinet panel. A home power cabinet panel comprises a main circuit breaker(102) for cutting off a supply voltage when generating an over-current or a leakage current by detecting the status of the supply voltage; a plurality of sub circuit breakers(204,206,208) connected to an output terminal of the main circuit breaker with an electric wire and which is branched from the electric wire for supplying the supply voltage to a general electric load and cuts off the power when generating an over-current or a leakage current at the electric load; and an auto power switching unit(220) for supplying an emergency power through an emergency wire when not receiving the supply voltage and supplying the supply voltage through the emergency wire when receiving again the supply voltage by cutting the emergency power.

The invention relates to a method for limiting normal overload of an aircraft, and belongs to the technical field of a control law for limiting normal overload of an aircraft flight control system based on a low-precision overload sensor. The realization process of the method is as follows: a longitudinal control surface command is solved by command shaping of a longitudinal rod displacement and forward gain and pitch angle rate feedback to control the aircraft control surface deflection so as to control an aircraft; when the normal overload signal fed back by the aircraft approaches the limitvalue, a normal overload limit command is solved by overload limit gain, and is superimposed on the command output after the command is formed; the command output after the command is formed is reduced, the longitudinal control surface command is reduced, the horizontal tail deviation of the aircraft is reduced, and the normal overload is reduced accordingly, so that the normal overload limit isrealized. By adopting the overload limiting method, the overload sensor with relatively low accuracy can be configured, the aircraft cost can be reduced, the pitch oscillation phenomenon caused by thelarge fluctuation of the overload sensor signal during plane flight can be avoided, the normal overload limit of the aircraft can be effectively prevented, and the flight safety can be ensured.

The invention discloses a vehicle axle load quality dynamic monitoring system, which includes an axle load quality detection device and a remote monitoring center connected thereto. The axle load quality detection device includes a microcontroller module; and a pressure sensor, an alarm module and a data transmission module which are connected to the microcontroller module. The remote monitoring center includes a control module; and a display module, a storage module and a clock module which are connected to the control module. The microcontroller module contains a comparative unit and a control unit.

The invention relates to a crawler type shrub harvesting and bundling integrated machine. The crawler type shrub harvesting and bundling integrated machine comprises a machine frame, a crawler type chassis, a header, a power driving device, a throwing device and a bundling device; the machine frame is arranged over the crawler type chassis; the header, the throwing device and the bundling device are installed on the machine frame; the power driving device is respectively connected with the crawler type chassis, the header, the throwing device and the bundling device; the crawler type shrub harvesting and bundling integrated machine further comprises a feeding device and a shredding device; both the two are installed on the machine frame, and connected with the power driving device; the front end of the feeding device is arranged corresponding to the header; the shredding device is arranged between the feeding device and the throwing device; the shredding device comprises a shredding shell, a shredding roller, a fixed cutter and a shredding transmission mechanism; the shredding roller is horizontally installed in the shredding shell; the fixed cutter is arranged on the shredding shell corresponding to the shredding roller; the shredding roller rotatably shreds materials corresponding to the fixed cutter; and the shredding transmission mechanism is installed on the shredding shell, and connected with the shredding roller.

The invention discloses a multi-purpose raw material stirring and mixing device which comprises a stirring and mixing shell, wherein supporting legs are mounted at the bottom of the stirring and mixing shell; a stirring and mixing space is formed in a center of the stirring and mixing shell; a plurality of integrated finished product discharging pipes are arranged on a side surface of the bottom of the stirring and mixing shell; the top of the stirring and mixing shell is connected with a cover body by a hinge; the center of the bottom of the stirring and mixing shell is connected with a motorfixing housing by a bolt; and a motor is mounted inside the motor fixing housing. The multi-purpose raw material stirring and mixing device provided by the invention utilizes one motor to realize both stirring and mixing work and finished product conveying work, and achieves multiple purposes with one machine so as to effectively improve utilization rate of the motor; in addition, the multi-purpose raw material stirring and mixing device has an overload protection mechanism which can effectively prevent the motor from overloading so as to protect the motor and improve practicality.

The invention discloses a clean type belt material separation unit and a material separation method of the clean type belt material separation unit. The clean type belt material separation unit comprises a discharging mechanism, a material conveying mechanism and a material collection mechanism. The clean type belt material separation unit is characterized in that the discharging mechanism comprises a discharging platform, a discharging trolley is arranged on the discharging platform, and one end of the discharging platform is provided with a discharging bin; the upper portion and the bottom of the discharging trolley are provided with a feeding opening and a discharging opening respectively; the discharging opening is provided with a discharging baffle, the discharging baffle can slide in a groove in the bottom of the discharging trolley, and one end of the discharging baffle is connected with a telescopic rod; the two sides of the discharging platform are provided with trigger rods for triggering the discharging baffle so as to enable the discharging baffle to control the discharging opening to be opened or closed. The bottom of the discharging trolley is provided with triggering holes matched with the triggering rods, and the triggering rods can make contact with the discharging baffle through the triggering holes.

The invention relates to an auxiliary passenger loading system for an elevator. The auxiliary passenger loading system comprises an auxiliary mechanism, a weighing device, a lift car prompt device, a control computation center and a weight privacy protection switching device; the auxiliary mechanism at least comprises two distance measuring devices and a landing door prompt device, the distance measuring devices are separately installed at central positions of the two sides of an elevator landing door, a detection port of each distance measuring device faces towards the outer side space of the elevator landing door, and the landing door prompt device is installed on one side of the landing door; the weighing device is installed at the bottom of a lift car, and the lift car prompt device is installed on the inner wall of the lift car; and the control computation center at least comprises a storage module, a comparison module, a signal generation module and a computational optimization module, the comparison module is connected with an elevator controller, the storage module and the signal generation module, the computational optimization module is connected with the elevator controller and the storage module, and the signal generation module is connected with the elevator controller. By means of the auxiliary passenger loading system for the elevator, the elevator passenger loading efficiency is improved, time is saved for passengers, and elevator transport capacity waste is avoided.

The invention discloses a state adjustment system for an intelligent switch, relates to the technical field of state adjustment of the intelligent switch, and solves the technical problem that the detection cost is increased due to the fact that the intelligent switch cannot be detected in a refined manner in the prior art.The performance of the intelligent switch is detected through a performance detection unit; after the test voltage is set, the corresponding output voltage is detected, and the intelligent switch with the qualified and stable output voltage is sent to a level division unit; performance detection is carried out before the intelligent switch is put into use, the intelligent switch is accurately judged, and the phenomenon that the intelligent switch is overloaded, the intelligent switch is damaged, and equipment of electric power engineering is seriously affected is prevented. The stability of the output voltage under the high-intensity operation is judged, the detection accuracy of the intelligent switch is improved through the stability detection of the high-intensity operation, the detection cost is greatly reduced through the stability detection of the high-intensity operation, and the stability detection cost is reduced while the stability detection of the output voltage is completed.

The invention belongs to the technical field of adjustment and control of a central air conditioner and discloses a variable-number control method of water chilling units and water pumps for a parallel chilled water system. The variable-number control method of the water chilling units and the water pumps for the parallel chilled water system is applied to the work condition that the tail load isreduced, the operating number m of the water chilling units and the water pumps needed after the tail load changes is calculated, in combination with the operating number m of the water chilling unitsand the water pumps needed before the tail load changes, the maximum flow Q<max> of water passing through a single water pump in the change process of the number of the operating water pumps is determined, whether the maximum flow Q<max> exceeds the operation-allowed passing maximum flow of a single water pump or not is judged, if yes, the finally needed number is determined through a step-by-step reduction rule; and if not, the finally needed number is the m.