Electric heating deicing and snow rescue vehicle system and electrical design scheme

Electric heating deicing and snow rescue vehicle system and electrical design scheme

Global warming and abnormal climate have exacerbated the dangers of ice and snow to human society. Such reports are not uncommon. Common hazards include:

1) Road traffic obstacles in the city Because the road surface is covered by snow and ice, it is difficult to drive, and slipping is easy to cause brake failure and steering wheel loss of control. Vehicle scratches and collisions, and even casualty accidents often occur. Drivers naturally have to slow down significantly when driving on icy and snowy roads, resulting in more serious traffic jams in the city.

2) The paralysis of the expressway and the freezing weather caused the expressway to be closed, which seriously affected the logistics and transportation. Poor logistics will inevitably endanger the normal production and operation of all walks of life, especially the interruption of the transportation of coal, petroleum and other energy materials will form a serious threat, and even cause Social crisis in the affected area. At the same time, a large number of passengers are stranded in passenger stations, which puts tremendous pressure on the transportation sector and society.

3) Many disadvantages of salt and snow removal At present, old snow salt removal methods are still being used to remove ice and snow on domestic highways. The main problem of this method is that the salt water penetrates the road surface, which has the effects of salinization, slabification, and embrittlement on the road, and has a great effect on the strength of the road surface. . In addition, there are also the disadvantages of wasting large amounts of salt and having a certain impact on the environment.

4) Airport closures and flight delays. Every winter, many domestic and foreign airports are reported to have to close the airport due to the snow-covered runway and the inability of the aircraft to take off. The flight delay caused a large number of passengers to stay at the airport, and the disorder of the itinerary caused passengers to be restless and complained, which also caused great pressure and economic losses to airlines.

5) The collapse of power lines and the interruption of power supply continue to be cold and snowy. The transmission lines are often overwhelmed by snow and ice. The lines are broken and the power tower poles collapse, which interrupts the power supply and not only seriously endangers the normal progress of social production. It also affects the normal guarantee of people's lives and social stability, and the consequences are more serious.

6) Freezing damage endangers personal safety For field or open-air workers, the threat of direct freezing damage from ice and snow weather is more serious. It has been reported that during the driving of four people in a place in the northwest, the snow and ice road made the car lie down, the food on the car was full of water, and the snow and ice blocked the pace of the rescuers. Eventually the four people were frozen to death.

The current situation of serious backwardness in rescue methods

Throughout the news media reports at the time of the ice and snow disaster, it can be seen that for decades, people's methods of fighting ice and snow disasters have not changed much, and they are still the manual work of shovel knocking, broom sweeping, and board pushing. High labor intensity, low operating efficiency, slow progress, and unsatisfactory results. So far, there is a lack of modern, mechanized, automated de-icing and snow professional equipment. This situation is extremely unsuitable for social development and the needs of human life. It reflects a kind of indifferent attitude of the relevant government departments and certain industry authorities and the old spirit of not seeking innovation and change and being aggressive. It is time to change the rescue methods and pay attention to and support the development of new mechanized and automated rescue equipment. It should be time to mention the agenda of the disaster relief committee and related civil affairs, science and technology, development and reform commissions, and other industry authorities.

The electric deicing and snow rescue vehicle discussed in this article is a feasible solution dedicated to changing the backward rescue methods. It is hoped that the waves of thousands of waves will be stirred up in one stone, which will promote the change of the old-fashioned pattern that is caused by the snow and ice disasters, the pains from year to year, and the rescue methods that have not kept pace with the times.

Structure and system design of deicing and snow rescue vehicle

The use of electric heating technology to melt or even evaporate the ice and snow on the road surface is the basic working principle of the deicing and snow rescue vehicle. This rescue vehicle is composed of walking part, electric heating part, snow blowing part, electric control part and other mechanical parts. In fact, it is essentially a special modified vehicle. The walking part is basically the same as the general modified vehicle, which is used to complete the vehicle's position movement; the electric heating part is to efficiently convert electrical energy into sufficient heat energy to complete the task of melting ice and snow; the snow blowing part is used to complete the cleaning of the road surface without ice and snow ; The electronic control part is mainly to control the conversion and use of electrothermal, measurement and snow blowing operations; other mechanical parts include the functional requirements of lifting and falling of the electric heating roller and other additional functional requirements.

Design Development Overview

1. Block diagram of structural system and electrical design

In the following block diagram, the control content of the walking part is omitted, and the content of this part is the same as the control requirements of a general car.

The electric heating roller in the picture is a key component, which has a dual role. First, it completes the conversion of electrical energy into heat energy, and raises the surface of the roller body to more than 100 ° C. Second, the heat is transferred to the ice and snow through the contact between the surface of the roller body and the snow on the road. The melting and evaporation of ice and snow. The electric heating roller is made of special materials, and its main characteristics include high pressure resistance (1500V), wear resistance, high strength and high electrothermal conversion efficiency. The electric heating roller can directly receive AC 220V or AC 380V feed to generate heat. When working, the electric heating roller is pressed on the ice and snow road, and the vehicle is driven to roll while walking, and the road ice and snow are melted and evaporated to remove it. The inner surface of the electric heating roller is coated with crystal film for heat insulation.

Since the electric heating roller is in a rolling walking state, its feeder line naturally needs to be synchronously rolled, and the power line is fixed. Therefore, there must be a line conversion link in the middle. The technical solution of this product is implemented by the slip ring method.

Design of AC power supply This solution is provided with two sets of power supplies that can be switched between each other. When the working area of ​​the rescue vehicle is located in the surrounding area with a house building, the AC power supply can be obtained directly from the building, and a certain length of wire is stored on the cable spool cable. When working in an area where the cable length is insufficient, it can be solved by using an on-board generator to generate electricity by itself. The transfer switch can easily realize the free conversion of the two sets of power supply. This is an environmentally friendly consideration of the electric heating roller in this technical solution. It can be easily placed on the ground or lifted into the air by manipulating the electric or hydraulic support (or manipulator). After the heating roller is off the ground, the vehicle can choose a higher speed to drive. This function is used to achieve fast driving to reach the rescue target under good road conditions and can quickly withdraw from the rescue site after the rescue is completed, to achieve rescue efficiency High purpose.

The snow blowing mechanism is an integral part of the electric deicing and snow rescue vehicle. It is essentially a powerful blowing system. With the high pressure and high wind volume generated by the regular shape of the wind, the snow on the road can be blown to the side of the road. Provide conditions for further processing of snow. This function is suitable for the situation of heavy snow and blizzard, and the road has not been severely frozen. It can easily and quickly open the road with better driving conditions. At the same time, the snow blown to the side of the road can be easily and quickly removed by loaders and trucks. The effective use of the snow blowing mechanism and the electric heating roller mechanism not only increases the use flexibility of the deicing and snow rescue vehicle and adaptability to weather changes, but also greatly improves the working efficiency of the deicing and snow and reduces the power consumption, which is conducive to saving resources. .

Behind the cab of the rescue vehicle, in addition to the above electrical cabinet, generator set and cable shaft, there is space available for use. This plan considers the installation of additional equipment such as a water storage shower room or steaming room. The purpose is to achieve " "Combining peace with war, multi-purpose vehicle", combining emergency snow and ice rescue and other functions that can be produced in peacetime without rescue. This will play a special role in special environments such as marginal areas, military uses, water-scarce areas, and field operations. Valuable role. I believe this part of the design concept and function will be welcomed by the market and users.

2. Technical indicators and parameters

● Deicing and snow heating roller width 1200mm

● Deicing and snow walking speed 10-20km / h

● Snow-blowing walking speed 10-30km / h

● The maximum speed of the rescue and evacuation site is 80km / h

● Surface temperature of electric heating roller ≥100 ℃

● Working life of electric heating roller ≥800km

● Generator set power 10-20kw

● Water storage tank capacity 2 cubic meters

● 50-100 boxes of steamed rice at a time

Conclusion

1. Features of the deicing rescue vehicle

● Novel design and high degree of automation;

● Fast and timely response, high working efficiency;

● Combination of peace and war, multi-purpose vehicle;

● It is environmentally friendly, does not damage the road surface, and saves a lot of road maintenance costs.

2. Social contribution of deicing rescue vehicle

● Added a new variety to China's construction vehicle series, filled a product gap;

● Provides a new method for mankind to cope with severe snow and ice weather;

● Relieve the heavy manual labor of removing ice and snow from manpower;

● Effectively keep the roads safe and smooth, greatly reduce the occurrence of traffic and casualty accidents, and reduce the occurrence of urban emergencies caused by blocked transportation, which is conducive to ensuring the construction of a harmonious society;

● Airports, ports, highways, stations, and urban arterial roads will be the priority beneficiaries, which can avoid or greatly reduce the damage of related industries;

● It can play an irreplaceable and self-evident potential role in both military and civilian use;

● The products have export markets and prospects.

3. I hope this article can attract the attention of relevant government departments and entrepreneurs with investment vision, and jointly contribute to product innovation and return to society.