148 results about "Emergency Supply" patented technology

The invention discloses a distribution network area emergency insurance supply method and system based on vehicle network interaction, and relates to the technical field of distribution network area emergency insurance supply, and the method comprises the following steps: obtaining a distribution network area fault position and electric vehicle distribution data, and constructing a vehicle scheduling instruction set; driving the electric vehicle to move to a target area according to the scheduling instruction set, and transmitting magnetic field disturbance signals of different frequency bands through a vehicle-mounted coil array to obtain a magnetic field disturbance signal set; constructing a dynamic sensing matrix for each magnetic field disturbance signal, and performing compression reconstruction by adopting an orthogonal matching pursuit algorithm to obtain a line impedance feature vector group; constructing a security constraint set based on the line impedance feature vector group, and respectively applying the security constraint set to a multi-objective optimization algorithm to solve the optimal capacity calling proportion of the electric vehicle battery pack; and controlling the electric vehicle to output reverse power to the distribution network area based on the optimal capacity calling proportion, thereby solving the problem that power supply is difficult to optimize due to the fact that difference between multi-vehicle cooperation and a power line is not considered in a traditional method.

The invention discloses a multi-constraint emergency material vehicle path optimization method and system, and belongs to the technical field of vehicle path planning. Comprising the following steps: acquiring input data from a data source, and constructing a multi-objective optimization model containing an objective function and constraint conditions based on the input data; based on the input data and the constructed multi-objective optimization model, generating an initial path scheme meeting all constraint conditions by adopting a heuristic algorithm combining nearest distance distribution and an earliest time window priority rule; and constructing a hierarchical collaborative optimization architecture consisting of an ALNS execution layer and a PPO decision layer, carrying out iterative optimization by taking the initial path scheme as a starting point, terminating the iterative optimization when a preset termination condition is met, and finally outputting an optimal path scheme. Compared with the prior art, the method has the beneficial effects that the key indexes are collaboratively optimized through the multi-objective optimization function, and the global solution quality and the scheduling precision are remarkably improved.

The invention discloses an emergency material positioning method for a medical first aid unmanned aerial vehicle, and relates to the technical field of unmanned aerial vehicle control, and the method comprises the following steps: calling the flight state information of the unmanned aerial vehicle, and carrying out the aerodynamic interference prediction analysis, and obtaining a conventional flight state and an abnormal flight state; carrying out discrimination processing on the flight state feature vector of the abnormal flight state so as to generate a flight abnormity identification signal or a normal flight signal; when a flight anomaly identification signal is generated, performing aerodynamic field modeling analysis to obtain an aerodynamic interference prediction map or a low-interference area distribution signal; when a normal flight signal is generated, a coordination control signal, an active interference suppression signal or a passive emergency protection signal is obtained. Through active suppression of pneumatic interference, multi-dimensional decision evaluation, adaptive control and independent material positioning, the problems of emergency protection failure, positioning loss and the like are prevented, and the reliability and the material delivery capability of the unmanned aerial vehicle under extreme weather are improved.

The invention discloses a power grid regulation and control method and system based on both peacetime and urgency, and relates to the technical field of power grid regulation and control, and the method comprises the steps: constructing a power grid supply and demand grid based on supply side structure data and demand side structure data; based on the regional historical state data, obtaining the overall valley probability and the emergency influence factor of each power grid supply and demand grid; based on the emergency influence factor contrary relation and the overall valley-filling probability, constructing a state contrary relation of the power grid supply and demand grids; acquiring emergency influence factors in a preset time sequence, and acquiring an emergency probability prediction value of each power grid supply and demand grid according to the emergency influence factors in the preset time sequence; and executing power grid regulation and control based on the emergency probability prediction value and the state opposite relation of the power grid supply and demand grids. The method has the beneficial effects that the emergency supply stability is ensured, the regulation and control frequency of the power supply station in the flat valley region is reduced, and the system stability is improved.

The invention discloses an intermittent lithium battery charging control method, which belongs to the technical field of hydropower station communication system power supply emergency supply, and comprises the steps of power output monitoring, battery state monitoring, temperature monitoring, fault alarm, data acquisition, data management and display, device self-inspection, intelligent charging, intelligent control, safety protection and alarm reminding. The power output monitor comprehensively monitors the charging and discharging states of the lithium battery pack. When the communication power supply device in the hydropower station communication system breaks down or is abnormal, the communication emergency power supply device is used as a standby power supply, and safety factors in the operation process of the communication system power supply device are fully considered; comprising but not limited to the following protection functions: over-temperature protection, over-current protection, short-circuit protection, overcharge protection, over-discharge protection and leakage protection, and provides power support for a communication load, so that power supply is quickly recovered, and continuous and stable operation of a communication system is ensured.

The invention relates to a disaster prevention emergency material distribution method and device, equipment and a medium. The method comprises the following steps: acquiring multi-source heterogeneous data of a disaster area; performing standardization and spatial fusion processing on the multi-source heterogeneous data to obtain standardized spatial grid data; based on the standardized space grid data, analyzing the material demand urgency degree of each space grid to obtain demand urgency degree data; generating initial material distribution scheme data according to the demand urgency degree data and preset material inventory data; and based on the initial material distribution scheme data, in combination with preset transportation network data, carrying out scheme adjustment through a predefined multi-objective optimization rule, and generating a material distribution scheme. By adopting the method, the problems of unreasonable distribution and low decision-making efficiency caused by data splitting and dependence on experience in a traditional mode are solved, the integration from disaster assessment to transportation scheduling is realized, the decision is quickly optimized, and the overall efficiency of emergency response is improved.

The utility model belongs to the technical field of compressed air supply, and particularly relates to an instrument purification compressed air supply system, which comprises a normal supply unit and an emergency supply unit, and is characterized in that the emergency supply unit comprises a screw air compressor, a high-efficiency degreaser, a micro-heat regeneration air dryer and a second dust fine filter which are connected in sequence; an outlet of the second dust fine filter is communicated with an outlet of the first dust fine filter, and emergency supply for the purified compressed air storage tank for the instrument is completed; a first bleeder and a second control valve are arranged on a pipeline between the screw air compressor and the efficient degreaser, and a first control valve is arranged on the first bleeder; a second diffusing pipe is arranged on a pipeline between the micro-heat regeneration air dryer and the second dust fine filter, a third control valve is arranged on the second diffusing pipe, and a fourth control valve is arranged on an outlet pipeline of the second dust fine filter. Compared with the prior art, the device has the advantages that the device can quickly respond to guarantee the supply of the purified compressed air of the instrument.

The invention relates to a method for operating a motor vehicle locking system (1), wherein the motor vehicle locking system (1) has a drive (2) with an electric drive motor (3) and a control arrangement (4) for controlling the drive (2) in order to provide a motorized closing function for an adjustable closure element (5) of the motor vehicle (6), wherein the control arrangement (4) has an electrical, rechargeable energy store (9) with at least one capacitor (10), wherein an electrical emergency supply voltage is made available by means of the energy store (9) in emergency operation, in particular in the event of a failure of a normal supply voltage.It is proposed that a diagnostic routine is carried out by means of the control arrangement (4), in which the capacitor (10) is connected to a reference potential via an inductance (11) in order to generate a current pulse with a pulse duration of less than 1000 µs, and in which an equivalent resistance of the capacitor (10) is determined on the basis of a capacitor current measured in the current pulse and a capacitor voltage measured in the current pulse.

The invention discloses a warehouse management prediction method and device based on emergency supplies and a medium, belongs to the technical field of warehouse management, and is used for solving the problem that in the existing warehouse management of emergency defense supplies, when an emergency disaster occurs, the access condition of the warehouse supplies is difficult to feed back in real time, and supply prediction information is difficult to form. And improvement of the overall information refined management level of the warehouse and the emergency system is not facilitated. The method comprises the following steps: carrying out distribution calculation on warehousing goods locations on emergency material types to obtain material warehousing information; carrying out corresponding inquiry on the materials according to the material warehousing information to obtain required list information; performing image recognition processing on the current warehouse-out material to obtain current warehouse-out information; performing future demand prediction calculation on the emergency material demand information to determine future material demand information; and carrying out material consumption calculation in a related future time period on the future material demand information and the residual material storage information to obtain a material dispatching strategy.

The invention relates to a method for operating a motor vehicle locking system (1), the motor vehicle locking system (1) comprising a motor vehicle lock (2) for a locking element (3) of the motor vehicle (4), wherein the motor vehicle lock (2) is equipped with an electric opening drive (8) for the motorized lifting of the pawl (7), the motor vehicle locking system (1) comprising a control arrangement (11) for controlling the opening drive (8) and comprising an electrical consumer (14), wherein the control arrangement (11) operates the electrical consumer (14) on the basis of a normal supply voltage in normal operation, wherein the control arrangement (11) has an electrical, rechargeable energy store (15), wherein an emergency supply voltage for the opening drive (8) is made available by means of the energy store (15) in emergency operation.It is proposed that, in normal operation, the electrical consumer (14) is operated partly on the basis of a discharging process of the energy store (15) by means of the control arrangement (11), and that at least one electrical characteristic of the energy store (15) is determined by means of the control arrangement (11) based on the discharging process.

The invention belongs to the technical field of material allocation intellectualization, and particularly relates to a medical emergency material management allocation method, system, equipment and medium based on a large model, and the method comprises the steps: receiving the related information of an emergency, and generating the type and number of recommended medical materials through calling a medical large model and a general large model; the recommended medical supplies are audited and adjusted, and a finally allocated medical supply list is determined; calculating warehouses meeting reserve conditions according to the medical material demand information and the reserve of the warehouses, and screening out a recommended warehouse list; the optimal path of the unmanned aerial vehicle from the warehouse to the event occurrence site and the optimal path of the emergency vehicle from the warehouse to the event occurrence site are planned, and the paths of the emergency vehicle are calibrated in combination with the real-time road congestion data; and sending the material allocation information and the path planning to a warehouse administrator, an emergency vehicle driver and an unmanned aerial vehicle driving system. And the emergency response speed and the rescue efficiency are improved.

This invention provides a warehouse management method for emergency supplies in smart facilities. It obtains production date, shelf life, and initial environmental parameters by parsing electronic tags on emergency supplies. A dynamic suitable temperature range is generated based on a nonlinear mapping between shelf life and initial temperature value, and a dynamic suitable humidity range is generated based on a correlation model between production date and initial humidity value. The overlap between the remaining shelf life and the suitable temperature range is calculated as a first priority factor, combined with the real-time warehouse load rate to generate a second dynamic allocation factor. A priority fusion algorithm is used to integrate and generate a material allocation matrix. The target warehouse environmental parameters are monitored in real time. When parameters exceed the suitable range, a multi-level adjustment strategy is triggered. If verification fails, a parameter self-learning engine is activated, achieving intelligent control and optimization of the warehouse environment, improving the safety and management efficiency of emergency supplies storage. This application can dynamically adapt to changes in material characteristics and optimize the precision of warehouse environment control.

The present application relates to the field of transportation engineering, and discloses a truck-unmanned aerial vehicle joint distribution path planning method and system for emergency supplies in an urban waterlogging scene, which divides demand points into type I demand points, type II demand points and type III demand points based on road interruption data, the quantity of supplies required by each demand point, the maximum load capacity of unmanned aerial vehicles and the maximum range of unmanned aerial vehicles; minimizes the latest time at which all demand points are serviced as an objective function, and constructs a truck-unmanned aerial vehicle joint distribution path planning model with demand point access, flow balance, path coordination, time, truck load capacity, unmanned aerial vehicle range, path access order and variable relationship as constraint conditions; the truck-unmanned aerial vehicle joint distribution path planning model is optimized and solved to obtain a joint distribution path scheme. The present application can provide an efficient and reliable joint distribution scheme for emergency decision-making in a waterlogging scene, thereby improving the overall efficiency and response speed of emergency supply distribution.

The invention discloses a hierarchical analysis-based emergency material storage site selection method under an extreme disaster condition. The hierarchical analysis-based emergency material storage site selection method under the extreme disaster condition comprises the following steps: S101, carrying out regional constraint hierarchical screening; s102, a disaster risk level assessment step; s103, a step of function constraint hierarchical optimization; and S104, planning a constraint hierarchy decision step. Through layer-by-layer progressive analysis of four levels of construction area, disaster, function and planning, multi-dimensional factors such as geographical environment, disaster risk, traffic accessibility, service coverage, policy compliance and the like are comprehensively considered, decision-making deviation caused by dominance of a single target or local indexes in a traditional method is avoided, the site selection process is more scientific and reasonable, and the site selection efficiency is improved. And the application range is wider.

The present invention discloses a method for locating emergency supplies for a medical emergency drone, relating to the field of drone control technology. The method comprises the following steps: retrieving the drone's flight status information, performing aerodynamic interference prediction analysis, and obtaining a normal flight status and an abnormal flight status; performing discriminant processing on the flight status feature vector of the abnormal flight status to generate a flight anomaly identification signal or a normal flight signal; when the flight anomaly identification signal is generated, performing aerodynamic field modeling analysis to obtain an aerodynamic interference prediction map or a low-interference area distribution signal; and when the normal flight signal is generated, obtaining a coordination control signal, an active interference suppression signal, or a passive emergency protection signal. The present invention prevents the occurrence of problems such as emergency protection failure and positioning loss through active aerodynamic interference suppression, multi-dimensional decision-making evaluation, adaptive control, and independent supply positioning, thereby improving the reliability and supply delivery capability of drones in extreme weather conditions.

The utility model relates to the technical field of knapsacks, and discloses an emergency knapsack which comprises a knapsack body, straps and a waistband, the straps are detachably connected with the knapsack body, the waistband comprises a first belt body and a second belt body, the first belt body and the second belt body are both fixedly connected with the knapsack body, and the first belt body and the second belt body are detachably connected. Emergency supplies are stored in the knapsack body, a user carries the knapsack body through the straps, the waistband is bound on the waist of the user, and the straps are detachably connected with the knapsack body, so that when the user needs to take out the emergency supplies, the straps can be detached to be separated from the knapsack body, and then the knapsack body is rotated to the front side of the user; the emergency supplies are taken out through the mode, in complex terrains or severe weather, a user does not need to unload the emergency backpack on the ground from the body, and operation is convenient.

The present invention discloses a hierarchical graph-based integrated warehouse and distribution logistics emergency supply prediction system and method, which at least includes a micrograph learning module, a macro-graph learning module, and a spatio-temporal joint prediction module. The micrograph module introduces meta-path aggregation of warehouse and distribution network routing features and adopts multi-view learning to obtain the spatial features of warehouse and distribution sites from the routing view and the event view respectively. The macro-graph learning module uses a lightweight graph convolution method to depict the relationship between warehouse clusters and distribution stations in the form of cities in emergency scenarios and learn the spatial correlation features of warehouse and distribution nodes in the macro dimension. The spatio-temporal joint prediction module captures the temporal correlation of supply data and fuses it with spatial features to accurately predict the supply capacity of future logistics sites. This method analyzes the spatio-temporal correlation features of warehouses and distribution stations in the emergency logistics network to achieve the overall goal of improving the prediction accuracy and enhancing the supply capacity at both ends of the warehouse and distribution in emergency scenarios.

The utility model discloses a data line with the function of power storage, including double -end charging wire, one side of double -end charging wire is equipped with upper shell and lower shell, the inside of upper shell and lower shell is equipped with inner recess, the inside inlaying battery of inner recess, the outside installation PCB board of battery, the outside sleeve of upper shell and lower shell is connected with rubber sleeve, the inside of rubber sleeve is equipped with perforation, the outside of rubber sleeve is equipped with display lens. This data line with the function of power storage, through installing upper shell and lower shell on the side of double -end charging wire, when the user cell -phone block is not powered, and there is no nearby supply power, the staff will take out this charger, and directly connect with cell -phone, a little electricity is stored in the battery, and the cell -phone emergency charging can be given, so it has the function of emergency supply when using.

The invention relates to the technical field of ecological side slopes, and discloses a convenient-to-maintain ecological side slope greening structure which comprises a greening device, a rain sheltering device, an emergency device, a ladder device and a water storage device. When it rains, rainwater falling into the second channel can enter the water absorption sleeve through the filter cover and the extrusion sleeve, when the water level of the rainwater in the second channel continuously rises, the weight of the rainwater can drive the extrusion sleeve to press downwards and press the rainwater in the water absorption sleeve out of the water storage tank, and when the water storage tank is full of water, the extrusion sleeve is pressed downwards again, so that the rainwater in the water absorption sleeve is squeezed out of the water storage tank. The downward pressure generated by the extrusion sleeve in the water absorption sleeve can drive water in the water storage tank to enter the water pumping pipe and the bottom water tank, so that the drainage function and the irrigation function are achieved. According to the emergency device, the second emergency cylinder is manually driven to rotate, so that an opening of the third emergency cylinder is opened, the emergency materials are taken and stored, the second emergency cylinder can further drive the emergency nut to rotate, and the emergency nut drives the emergency screw rod and the mounting frame to slide upwards.

The application provides a drainage emergency vehicle emergency material storage device, which comprises a warehouse door, a storage warehouse, two driving assemblies, at least one first fixing support and at least one first limiting mechanism, the two driving assemblies are installed on the warehouse door and a vehicle body and are used for driving the warehouse door to overturn, the at least one first fixing support is installed on the storage warehouse, the at least one first limiting mechanism is installed on the at least one first fixing support and is arranged in one-to-one correspondence with the at least one first fixing support, the first limiting mechanism comprises two first limiting assemblies and two second limiting assemblies, the two first limiting assemblies are installed on the first fixing support and are used for limiting a workpiece in a first direction, and the two second limiting assemblies are installed on the first fixing support and are used for limiting the workpiece in a second direction. The drainage emergency vehicle emergency material storage device provided by the application can limit a diving pump during transportation and improve the stability of the diving pump during transportation.

The utility model discloses an explosion-proof energy storage battery PACK box body which can play an explosion-proof role on an internal battery, and meanwhile, the explosion-proof energy storage battery PACK box body also has an explosion-proof function, so that the safety and reliability of electric explosion-proof energy storage in the explosion-proof field can be improved, and the problem of emergency supply of a power supply in a dangerous place is solved; and the safety of equipment and process is effectively guaranteed. According to the device, a partition plate piece is arranged in an anti-explosion box body and used for dividing the interior of the anti-explosion box body into an upper containing cavity and a lower containing cavity, a lithium iron phosphate battery pack is installed in the upper containing cavity, a battery BMS is installed in the lower containing cavity, and a charging and discharging interface and a communication interface are both arranged on one side of the lower containing cavity; the lithium iron phosphate battery pack and the battery BMS are both connected with the charging and discharging interface, the battery BMS is connected with the communication interface, and the explosion-proof box body can be used for dangerous places of a first area and a second area and explosive gas environments of IIA, IIB and IIC type temperature groups T1-T4.

Electromechanical drive (10) for actuating a movable door leaf (60) of a fire door, comprising a motor and gearbox unit (30) which is operatively connected to the door leaf (60) via a power transmission device (50) and causes a movement of the door leaf (60), and a mechanical energy storage device (40) for closing the door, which is charged during an opening movement of the door leaf (60) and discharged by a closing movement of the movable door leaf (60), wherein the motor and gearbox unit (30) assists the mechanical energy storage device (40) during door closing and causes the door to close completely. where in an emergency operation in which a supply voltage (U G ) the motor and transmission unit (30) is switched off, an emergency supply (70) of the motor and transmission unit (30) an emergency supply voltage (U N) provides an emergency power supply (70) comprising a changeover switch (72) and an electrical energy storage device (74), wherein the changeover switch (72) comprises at least one relay contact which, in normal operation, supplies the motor and gearbox unit (30) with the supply voltage (U) G ) and in emergency operation, in which a supply voltage (U G ) the motor and transmission unit (30) is switched off, with the emergency supply voltage (U N ) of the electrical energy storage device (74), characterized in that a control electronics unit (20) monitors and operates the motor and gearbox unit (30) depending on the current operating state and / or a current temperature of the motor and gearbox unit (30) and / or a current direction of movement and / or a current speed and / or a current opening angle of the door leaf (60) and The control electronics (20) determine the current temperature of the motor and transmission unit (30) via a temperature sensor (32) and / or determine the current direction of movement and / or the current speed and / or the current opening angle of the door leaf (60) via a rotary encoder (34) or a position sensor.

The invention relates to a method for operating a motor vehicle closure system (1), the motor vehicle closure system (1) having a drive (2) with an electric drive motor (3) and a control assembly (4) for actuating the drive (2) in order to provide an electric closure function for an adjustable closure element (5) of a motor vehicle (6), the control assembly (4) has a rechargeable electrical energy store (9) with at least one capacitor (10), the emergency supply voltage being provided by means of the energy store (9) during emergency operation, in particular in the event of a failure of the normal supply voltage. According to the invention, a diagnostic program is carried out by means of a control component (4), in which the capacitor (10) is subjected to a discharge and a charge from an initial state of charge in a chronological order, and a first electrical characteristic parameter of the capacitor (10) is determined on the basis of the discharge and a second electrical characteristic parameter of the capacitor (10) is determined on the basis of the charge by means of the control component (4).

The objective is to provide a device that detects the usage status of a disaster prevention cabinet without requiring electrical wiring to the cabinet and without affecting the design of the cabinet's interior. [Solution] An elevator system having a door that can be opened freely from a closed state and cannot be closed from an open state without a predetermined operation, and equipped with a disaster prevention cabinet inside the car for storing emergency supplies, the elevator system being characterized by comprising: an imaging means installed inside the car for imaging an area including the disaster prevention cabinet; a detected object installed in the disaster prevention cabinet that is displaced when the door is opened from a closed state; and a displacement determination means for determining whether or not the door has been displaced from its closed position based on the detected object imaged by the imaging means.

The invention relates to a method for providing emergency power to a vehicle, an emergency power supply device, and a vehicle 10. The method comprises providing a low-voltage system 16 in the vehicle 10 and providing a charging socket 17 on the vehicle 10. Furthermore, the method includes unlocking the charging socket 17 when a predetermined energy level is reached in the vehicle 10 and connecting a protective conductor 19 of the charging socket 17 to the low-voltage system 16. Additionally, the method includes supplying the protective conductor 19 with electrical energy and opening the vehicle 10 with the low-voltage system 16.

The invention relates to an electronic door actuation arrangement (1) for a vehicle (2) comprising a load circuit (3), a control circuit (4), an emergency power source (5) and a buffer storage device (6), wherein the emergency power source (5) is galvanically connected to the load circuit (3) and the control circuit (4), the emergency power source (5) and the buffer storage (6) can be charged during a normal operating state of the vehicle (2) with a main supply energy provided via a main power source (10), so that in the event of an unavailability of the main supply energy, an emergency supply energy is provided by means of the emergency power source (5) during an auxiliary operating state, the control circuit (4) for signal transmission is connected to the load circuit (3) so that the load circuit (3) can be actuated in response to a signal from the control circuit (4), wherein The buffer storage device (6) is galvanically connected between the emergency power source (5) and the load circuit (3), and the buffer storage device (6) is designed to stabilize the voltage supply of the load circuit (3) during actuation. In this way, an improved power supply is provided for an electronic door operating device in emergency situations.

1. Name of the product in this design: Fire Emergency Box. 2. Purpose of this design: To place fire emergency supplies. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D rendering 1.

The invention relates to an electronic door actuation assembly (1) for a vehicle (2), comprising a load circuit (3), a control circuit (4), an emergency energy source (5), and a buffer storage device (6), wherein the emergency energy source (5) is galvanically conductively connected to the load circuit (3) and the control circuit (4), the emergency energy source (5) and the buffer storage device (6) can be charged with a main supply energy provided by a main energy source (10) in a normal operating state of the vehicle (2) such that in the event of an unavailability of the main supply energy, an emergency supply energy is provided by means of the emergency energy source (5) in an auxiliary operating state, and the control circuit (4) is connected to the load circuit (3) so as to transmit signals such that the load circuit (3) can be actuated in response to a signal of the control circuit (4). The buffer storage device (6) is galvanically conductively connected between the emergency energy source (5) and the load circuit (3), and the buffer storage device (6) is designed to stabilize a voltage supply for the load circuit (3) during the actuation process. In this way, an improved energy supply for an electronic door actuation assembly in emergency situations is provided.

The utility model discloses a smart payment column for gas station, including support base and convex recess, the rotatory gear is rotatively connected on the smart payment platform, the utility model discloses, through the indication display device display road sign or gasoline model, the information and payment of gas station are shown on the display screen, and through the operation platform, operation selection and payment are carried out, and the petrol gun head is taken down from the smart payment platform by holding the handle, and the oil pipeline and petrol gun head are responsible for adding petroleum into the car, the output end rotation of the internal motor of smart payment platform drives the rotation of the rotating shaft, and then drives the rotation of the cylindrical gear, and then drives the rotation of the rotatory gear, finally drives the rotation of the indication display device, the up-and-down movement of the indication display device is driven by the cylinder work, can let the indication display device adapt to a variety of environment, and the practicality is stronger, push the sliding block and slide out the recess of sliding board, through the convex and push up the sliding board that loses the sliding block restriction, open the emergency supplies box conveniently, save time and effort.