45results about How to "Prevent accidental entry" patented technology

The invention discloses an automobile capable of providing view for a behind vehicle. The automobile comprises an automobile head, a steering wheel, front wheels, rear wheels and a carriage which are sequentially connected, wherein a camera is installed at the top of the automobile head; if a traffic light is positioned above the front side of the automobile head, the traffic light is within the wide angle of the camera; a camera line is connected to the camera and also connected to a liquid crystal television screen installed on the rear plate of the carriage; the image of the traffic light is displayed on the liquid crystal television screen; the rear plate of the carriage is positioned at the tail of the carriage; a storage battery is fixed at the bottom of the carriage; an instrument board is installed in the automobile head; a switch is fixed on the instrument board. The invention provides the liquid crystal television screen installed at the tail of an oversize vehicle for providing ahead road traffic information for the behind vehicle, The liquid crystal television screen is applied to buses, container cars and other oversize vehicles for providing view for behind vehicle to prevent the behind vehicle from running the read light mistakenly. The switch is installed on the instrument board in the cab of the oversize vehicle, when the vehicle does not meet the traffic light, the power supply of the switch can be cut off, so that a driver is convenient to operate.

The invention relates to a pedestrian crossing control system and method based on upstream-downstream signal intersection coordination. Timely response to road segment pedestrian crossing can be ensured, trunk line coordination effect of adjacent upstream-downstream signal intersections can be guaranteed, reminding of pedestrian crossing waiting passing countdown can be realized to assist pedestrians in safe crossing, and impact on trunk line coordination control effect is reduced. The system comprises a pedestrian crossing signal triggering device, signal countdown equipment, a signal machinecontrol subsystem and a central optimized control subsystem. When receiving a pedestrian crossing request signal, the signal machine control subsystem sends information to the central optimized control subsystem, the central optimized control subsystem generates pedestrian crossing signal timing plan information and countdown information in real time, and the signal machine control subsystem controls on-off and lamp color conversion of signal lamps according to the pedestrian crossing signal timing plan information and forwards the countdown information to signal countdown equipment for display.

The invention discloses a safe protective guardrail for building construction. The safe protective guardrail comprises multiple bases, wherein the upper sides of the bases are movably connected with columns through inserting shafts, the columns are internally provided with cavities, sliding rods are slidingly connected in the cavities, the upper sides of the sliding rods penetrate through the sidewalls of the cavities, extend to the outsides of the columns and are fixedly connected with lifting handles, two side walls of each sliding rod are symmetrically and fixedly connected with multiple clamping columns, the lower ends of the sides, away from the columns, of the first supporting rods are fixedly connected with a fixing plate, the upper side of the fixing plate is rotatably connected with a rotary plate through a hinge, and one side of the fixing plate and one side the rotary plate are both slidingly connected with a sliding plate. The rotary plate is opened, the sliding plate on the side walls of the fixing plate and the rotary plate slides out and is connected with a second supporting rod, a baffle in a groove is turned away, accordingly a construction area and an outside area are separated by using the guardrail, and the sliding plate can be selectively pulled out for blocking according to the situation. In addition, a spray head can decrease flying raise dust in a site.

The invention discloses a fresh wind device used for an integrated kitchen ceiling. The fresh wind device used for the integrated kitchen ceiling comprises a draught fan, a ventilating pipeline and a wind discharging panel, wherein a wind outlet is formed in the wind discharging panel; one end of the ventilating pipeline is connected with the wind discharging panel; the output end of the draught fan is communicated with the wind outlet through the ventilating pipeline; the draught fan is fixedly arranged in a draught fan installment seat; a roof fixing piece is arranged on the draught fan installment seat. A movable door plate is arranged on the upper side of the wind discharging panel and covers the wind outlet; a wind direction control mechanism is arranged on the upper side of the movable door plate. The wind discharging panel is arranged in the plane of the kitchen ceiling, and the draught fan installment seat is fixedly connected to the roof ceiling. When the draught fan works, vibration is transmitted to the roof ceiling, and therefore noise is reduced. After the draught fan is stopped being used, the movable door plate is closed, gas in a kitchen can be prevented from inversely flowing outdoors, and tiny organisms outside are prevented from invading, and outdoor air is prevented from unexpectedly entering a room. Swinging blades swing and can stop at any swinging positions. The fresh wind device used for the integrated kitchen ceiling can improve fresh wind air flow distribution and improve ventilating effect.

The invention provides a multifunctional classroom lamp and a lamplight system thereof. The multifunctional classroom lamp comprises an air purification module, a common lamplight mode, an ultravioletlamplight mode, a temperature detection module, a display module, a camera module, a circuit switch module, a processing system module and a power supply module. The multifunctional classroom lamp has the advantages of purifying air, disinfecting and sterilizing the interior of a classroom, monitoring the classroom safety and the like.

The invention relates to an attachment device of a large vehicle for displaying front and back road conditions, wherein a front camera and a front mainframe are arranged on the top of the head of the large vehicle; a front display screen is fixed above a steering wheel and is used for displaying rear vehicles; a rear mainframe is fixed at the tail of the large vehicle; a rear display screen is fixedly arranged at the back of the large vehicle; the rear display screen is used for displaying the traffic light; a rear camera is fixed under the rear display screen. The invention provides the device which is arranged on the large vehicle and is used for providing the front road condition information for the rear vehicles. The device is used for the large vehicle such as a bus and a container car and is capable of providing view for the rear vehicles, so that the rear vehicles are prevented from running the red light mistakenly in a following way. In the consideration of the fact that a rearview mirror of the large vehicle cannot play a role of a rearview mirror of a car, the attachment device is provided with the display screen used for displaying the rear road condition in a driving cab of the large vehicle, so that an assisting function is reached when the large vehicle backs up, and most importantly, the display screen is capable of displaying the positions of the rear vehicles in the travelling process so as to eliminate the vision blind area of a driver of the large vehicle.

The invention provides an ecological crab breeding method, and belongs to the technical field of ecological breeding. The ecological crab breeding method is characterized by comprising the following steps: S1, construction of a culture pond: arranging the culture pond into a slope type structure, enabling the slope at the bottom to extend to the water surface on one side of the culture pond, and enclosing with fences to build a pond; inserting the fences into the bottom of the pond by a distance of 60 cm, and laying reinforcing plates at the bottoms of the fences to prevent crabs from escaping; S2, treatment of the culture pond: removing excessive sludge at the bottom of the culture pond, reserving sludge with the depth of 12 cm, then thoroughly sterilizing, thoroughly changing primary water after sterilizing, arranging a hose with a plurality of air outlets at the position of 5-10 cm in the sludge, connecting the hose with an aerator, and filling oxygen into the pond through the aerator and the hose so as to avoid crab suffocation. Water grass is planted in the pond, and the water grass is not only the food of crabs, but also can improve the water quality.

The invention relates to the technical field of liquid spraying guns, and discloses a toy water gun provided with a four-opening water storage tank. The toy water gun comprises a water gun shell and the water storage tank. The water gun shell is provided with a water spray head, a control water valve device and an air charging device. The control water valve device communicates with the water spray head, and the water storage tank is provided with a water inlet, a water outlet, an air inlet and an air outlet, wherein the water inlet and the air outlet are exposed in the water gun shell. The water inlet is covered with a water opening cover, and the air outlet is covered with an air opening cover. The water outlet communicates with the control water valve device, and the water storage tankis internally provided with a flexible air bag. The air bag is provided with an air inlet bag opening and an air outlet bag opening, an air inlet nozzle is formed in the air inlet bag opening in a communication mode, and the air inlet nozzle penetrates through the air inlet in a sealed mode to communicate with the air charging device. An air outlet nozzle is formed in the air outlet bag opening ina communication mode, the air outlet nozzle penetrates through the air outlet in a sealed mode, and the air opening cover seals the air outlet nozzle when the air opening cover is connected to the air outlet. A water path and an air path of the toy water gun are isolated from each other, and a shooting angle is not limited.

The invention relates to the technical field of liquid spray guns, and discloses a water gun fixedly provided with a water storage tank. The water gun comprises a water gun shell, the water storage tank, a nozzle, a control water valve and an air charging device. The control water valve comprises a trigger, a flexible water bag is arranged in the water storage tank, and the water storage tank is provided with a water inlet, a water outlet, an air inlet and an air outlet. The water inlet and the air outlet of the water storage tank are exposed to the water gun shell, the water bag is provided with a water inlet bag mouth and a water outlet bag mouth, and the water inlet bag mouth communicates with the water inlet in a sealed manner. The water outlet bag mouth communicates with the water outlet in a sealed manner, the water inlet is covered with a water opening cover, and the air outlet is covered with an air opening cover. The water outlet communicates with the control water valve in asealed manner, the control water valve communicates with the nozzle in a sealed manner, and the air inlet communicates with the air charging device in a sealed manner. The shooting angle of the watergun is not limited, water in the water bag is nearly all sprayed out, and the water adding frequency of a player can be reduced during one game.

The invention provides a method for road intersection traffic signal in-vehicle sensing. The method comprises a first step of setting signal periods and vehicle starting time and yellow time according to intersection geometric conditions; a second step of obtaining the time headway of each entrance channel, and accordingly calculating the hour flow of the entrance channel; a third step of calculating the green lamp proportion of each intersection and accordingly distributing effective green time of each entrance channel; a fourth step of executing traffic signal timing according to distribution results through a traffic instrument; a fifth step of judging whether red time of some entrance in timing results exceeds a signal period T; if the red time of some entrance in the timing results exceeds the signal period T, returning to the second step, or else sending the timing results to a vehicle-mounted receiving end. The invention further relates to a system for road intersection traffic signal in-vehicle sensing.

The invention relates to the technical field of liquid injection guns, and discloses a toy water gun with a two-port water storage tank. The toy water gun with the two-port water storage tank comprises a water gun housing and the water storage tank, wherein a water injection head is arranged on the water gun housing; a control water valve and an air inflation device are arranged on the water gun housing; the control water valve comprises a trigger; the control water valve is hermetically communicated to the water injection head; a water port and a gas port are formed in the water storage tank;the water port of the water storage tank is detachably connected to the water gun housing in a manner of thread fit; after the water storage tank is connected to the water gun housing, the water portof the water storage tank is hermetically communicated to the control water valve; a flexible gas bag is formed in the water storage tank; the gas bag is provided with a bag opening; the bag openingis hermetically communicated with a gas nozzle; the gas nozzle hermetically penetrates through the gas port of the water storage tank; one end exposed to the water storage tank, of the gas nozzle, isdetachably and hermetically communicated with a gas pipe; and the gas pipe is hermetically communicated to the air inflation device. The toy water gun is capable of carrying out continuous, smooth andeffective shooting even if being inclined, a shooting angle is unlimited, and a water channel and a gas channel are mutually isolated, so that water is prevented from entering the air inflation device.

The invention discloses a mistaken swallowing prevention toy building block which comprises a building block body, a plurality of force sensing electric sheets are embedded in the side wall of the top end of the building block body, a containing groove is formed in the side wall of the building block body, a first electric contact is fixedly connected to the side wall of the top end of the containing groove, and a second electric contact is fixedly connected to the side wall of the bottom end of the containing groove. The horizontal distance between the side wall of the first electrical contact and the side wall of the second electrical contact is 2 cm, and the force-sensitive electrical sheet, the first electrical contact and the second electrical contact are electrically connected. The invention relates to the technical field of tools for children, the first electric contact and the second electric contact need to be connected by saliva to form a complete closed circuit, so that the circuit in the circuit forms electric shock on the children through the saliva, the children spit out building blocks, and the children are prevented from swallowing the building blocks.

The invention discloses a large punching machine with a supporting device for machining automobile parts. The large punching machine comprises a support, an upper die and a lower die matched with theupper die, the lower die is located on the base, the upper die is installed on an installation table, the installation table is connected with a hydraulic device, and the hydraulic device is controlled by a main controller; a supporting device is arranged between the installation table and the base, and the supporting device comprises a fixing rod, a supporting rod and a locking support; the fixing rod is connected with the support, the supporting rod rotates around the fixing rod through the locking support, and the locking support comprises a rotating hole and an installation hole; and the locking support is arranged on the fixing rod in a sleeved mode through the rotating hole, and the supporting rod is arranged in the installation hole of the locking support in a sleeved mode. According to the large punching machine, through double insurance of the hydraulic device and the supporting device, workers are safer when repairing the punching machine, the safety performance of the punching machine is improved, and photoelectric alarm devices are arranged at the four corners of the punching machine, so that when the punching machine works, potential safety hazards caused by the fact that people mistakenly enter the working area of the punching machine are prevented.

The invention belongs to the technical field of medical instruments, relates to the technical field of intelligent manufacturing, and particularly discloses an intelligent drainage device used after tumor operation. The device comprises a negative pressure drainage device and a cleaning device matched with the negative pressure drainage device; the negative pressure drainage device comprises a vertically-arranged negative pressure tank, an air pressure adjusting mechanism is arranged on the negative pressure tank, and the negative pressure tank is connected with a drainage pipe. The cleaning device comprises a water tank and a cleaner connected with the water tank; the intelligent drainage device used after the tumor surgery is stable in air pressure, convenient to clean and capable of achieving continuous drainage.