Road traffic emergency rescue vehicle

The city has a high degree of political sensitivity. At present, it is a crucial stage for implementing the strategic positioning of the capital city and accelerating the construction of an international first-class harmonious and livable city. Capital Expressway is the ground transportation arteries of the country and Beijing. Expressway emergency rescue has become an important part of the city's emergency response team. The first maintenance company is responsible for emergency response tasks for such world-class urban traffic arteries. In the past few years, the company has experienced extreme weather such as "721 Rainstorm" and "113 Blizzard". In the face of such arduous tasks, the first-time conservationist actively thinks about the road rescue work, and strives to solve the problems of unified command, rapid linkage, and scientific decision-making in the emergency rescue. In combination with the new concept of “Internet + Highway”, it independently designs and integrates according to the emergency rescue business needs of the expressway. The emergency command vehicle was implemented to realize on-site command and remote dispatch.

Distributed dispatch command communication system. Through the inter-vehicle interworking gateway and base station equipment, provide wireless communication coverage for the site, forming a regional communication system. The on-site staff can be equipped with hand-held or multi-service work terminals. These field terminals realize voice communication and integrated command through wireless links. The main highlight is that after the command vehicle intercommunication equipment is started, it forms a bond that connects the field terminal with the public radio network-based intercom equipment to form an area + network communication body, and realizes the regional and command center and the entire city's expressway emergency system. The communication and interoperability realize the uploading and issuing of the scheduling tasks, and the formation of points integrates the perfect communication system.

Live and remote video interaction. Through the multi-service job terminal video equipment and vehicle video terminal, the live image is uploaded to the emergency communication vehicle in real time, and the command vehicle monitoring image is synchronously uploaded to the company command center to form a video complementary situation viewing network. The emergency command vehicle is equipped with video acquisition drones, kayaking, and individual command systems. Video capture and viewing are performed from different perspectives, and video resources are enriched. At the same time, the video car and the company's command center and other units establish a video conference mechanism. The on-site command center, the company command center, and the branch command offices simultaneously discuss and discuss solutions. Use multidimensional video interaction to improve the command support system.

Multidimensional decision data support. High-speed emergency refers to the on-site emergency command link, and is also the application platform of the company's information system. In the emergency command vehicle, it can realize the query of the jurisdictional road conditions, basic data, and inspection data; the monitoring of the operation status of the pump station in the 830 km high-speed road, data analysis, and even remote pump station control; monitoring and deployment of the company’s vehicle equipment, and the initiation of emergency response Models, to achieve the operation of the rescue team monitoring; bridge health status monitoring; query the current management status of the company, to understand the maintenance operations, the company inspection and assessment, the current event information processing and so on. Through multiple aspects of data query and analysis, data support for scientific decision-making has been improved for emergency command, making on-site command more scientific and effective.

Emergency command function. The high-speed emergency command vehicle also has general on-site emergency functions such as emergency power generation equipment, emergency lighting system, on-site power amplifier system, LED guidance equipment, and integrated power control system.

Trailing Suction Hopper Dredger is an equipped with rake head mining machinery and hydraulic Dredging Equipment of large self-propelled, binning Dredger .Dredging, will put down the bottom of the river, the suction pipes, using vacuum effect of mud pump, through the rake head and Suction Tube bottom absorbing mud into the dredger mud in the warehouse, warehouse full of mud, after sailing up the rake to spoil area open the mud disposal, or directly to dig up the dirt out of the ship. Some dredger can also be unloaded in mud warehouse of soil to suck out of land reclamation. It can have good navigation performance, self-propelled, since the load dump, and in the work in the navigation state, don't need a positioning device. It is suitable for no cover, long and narrow coastal approach channel excavation and maintenance, with most efficient when excavation of silt.

Photo of our Trailing Hopper Suction Dredger:

The working principle of Trailing suction hopper dredger
Trailing suction loading dredger, basically is a kind of dredging boat from the bottom of the sea, the dredging method is similar to vacuum cleaner. The ship is equipped with one or several centrifugal pump, using centrifugal pump suck up water and mud from the bottom, hopper into the ship. These operations on the voyage, air while digging, hopper filled with mud is to throw mud area, through the Bottom Door handle cases out of the mud. All ships of trailing suction hopper with its capacity to show different size, general capacity is 500 ~ 1000 m3. The smallest trailing suction can ship construction. Under the condition of the water depth around 3 largest trailing suction vessel dug deep can reach more than 3 ~ 35. The trailing suction vessel to vessel, can be in the wind and waves considerable dredging, navigation and throw mud at sea.

Classification Trailing suction hopper dredger 
Trailing suction hopper dredger is single rake or to rake, decorate in ship or both sides respectively.Trailing suction hopper dredger is flexible, high efficiency, strong wind resistance, is suitable in coastal ports, the broad river and vessel anchorage operation, in the large, coastal and estuarine area without cover, appropriate chooses self-propelled trailing suction hopper dredger.Suitable for loose and hardness below the clay soil.

Trailing suction hopper dredger's advantages and disadvantages
Trailing suction hopper dredger in the bow with more lateral thrusters, control performance is better. When construction without an anchor cable or berth, little interference for navigation, therefore very suitable for the port or navigable river, canal in construction. The disadvantage of trailing suction hopper dredger is bottom hard to dig. With plenty of water and sediment in the dredging shipped to spoil area, thus affecting production. Trailing suction vessel in infrastructure dredging and can be used in the maintenance dredging, but can't construction in narrow the scope of the waters.

Discharging of Trailing Hopper Suction Dredger
There are several ways to discharge a TSHD. The most common way is dumping the material.
Dumping - This is done by simply opening the doors that close the hopper. Once opened the substance will simply drop to the seabed because of gravity. The hopper will never be completely empty because there will always be some residue and water left inside.
Pressing - High pressure pumps will pump water inside the hopper to loosen or even liquefy the substance, which can then be pumped via long hoses over great distances (f.i. ashore)
Rainbowing - This is the same principle as pressing, but instead of transporting the substance it will simply be blown away. This is often used to create land.
Crane - It is always possible to discharge the load with a crane, but this will be a time consuming process.

Trailing Hopper Suction Dredger

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