Leader Dredger
+86 136 8536 8256
+86 183 6360 5622
info@leaderdredger.com
aftersale@leaderdredger.com
+86 183 6360 5622
Cutter Suction Dredger
The hydraulic system of the Leader dredger is distributed throughout the dredger and is the core control system of the entire ship. The hydraulic system is a systematic project, which is highly professional and comprehensive.
1. Strong adaptability:
Unlike mechanical transmission, the position of the driving and driven parts must be kept fixed. The hydraulic system can transmit power through hydraulic hoses without being restricted by position.
2. The force can be amplified:
the hydraulic system can move a large load with a small force (hydraulic theorem).
3. Simple structure and low wear:
the hydraulic system requires few parts, not many moving parts, and it is lubricated by itself.
4. Compact structure and small size:
Compared with the motor of the same horsepower, the hydraulic motor is much smaller; compared with the shaft and gear of the mechanical system, the hydraulic system can withstand greater pressure.
5. Good economy:
due to the simple structure and small size of the hydraulic system, the cost of related power transmission is low, and the power and resistance losses are relatively small.
6. Safety:
There are few moving parts, no gears, chains, electrical contacts, etc., and overload can also be easily controlled by using a pressure relief valve, while other systems are not easy. (Slip clutch can be used for machinery, and overcurrent and overvoltage protection devices are required for electrical.
7. Efficiency:
higher than electrical system, but lower than mechanical.
8. High cleaning requirements:
The hydraulic system has higher requirements for cleaning than other systems. Rust, corrosion, dirt, high temperature and lack of oil can all cause damage to the hydraulic system. (It should be done in accordance with the maintenance requirements, using oil, oil change and filter element)
The dredging system is divided into a control system and a monitoring system, which is a highly integrated system.
Through the monitoring system, you can understand the working status of all components of the whole ship, the working status of the main and auxiliary engines, the real-time status of the hydraulic system, the condition of the electrical circuit system, the running status of the pump, the working status of the gear box, the cooling system, etc.
At the same time, the centralized control unit controls the working parts of the dredger in real time through the operation lever and the like. One person can operate the parts of the entire ship.
The electrical system of the dredger is composed of a main generator set, a standby generator set, an electrical cabinet, a charger and an operation console.
Among them the main generator set:Provide power for sealing water pumps, miscellaneous water pumps, lighting and air conditioning during dredger work.
Dredger electrical cabinet:
It is the electrical equipment for controlling dredgers, including motors, gate blades, backup hydraulic pumps, fans, air switches for lighting and leakage protectors.
On the panel are:
voltage indicator, working/standby generator switch, standby hydraulic pump, sand pump, sealing water pump, miscellaneous water pump, start/stop button of the fan.
Battery for dredger:
Start the diesel engine, solenoid valve of the hydraulic system, 24v power supply lighting of the whole dredger, to provides the power.
Trolley system
Anchor rod system
Flowmeter, concentration meter
Relay pump
Service boat
The lower end of the full range of Leader Dredger dredger spud is made of solid steel to ensure sufficient strength when penetrating the ground. When lifting the pile head, water can overflow from the two holes above the lower point. At the top, the hoist ring allows the crane to easily change the pile head.
Feature:
1. Made of high-quality steel with high strength and wear resistance. Customers can also order other materials.
2. Longer service life and easy maintenance.
3. Simple disassembly and assembly, can be accurately adjusted.
Leader Dredger space is far superior to European and American ships, this design is more convenient for good ventilation system and maintenance of cabin components.
Reasonable layout of engine, hydraulic, circuit cold area system, etc., easy to locate and maintain system problems
The Leader Dredger full range of dredging boat Driving cabin has more field of vision, which is convenient for viewing more external conditions.
The extremely simple control system allows the driver to better operate the dredger.
Provide drivers with a high-quality working environment, and equipped with air conditioning.
The winch of large dredger adopts hydraulic transmission.
According to the position and function of the dredger, the working winch is divided into the bridge hoisting winch, the lateral shifting working winch, the anchoring winch, and the positioning pile hoisting winch.
Various working winches can be steplessly adjusted within a certain rope speed range, and are equipped with manual stop pins.
1. Small size
2. Lightweight
3. Strong and wear-resistant
4. Anti-corrosion
5. Safe and convenient
6. Fast maintenance
The hull of the dredger adopts a modular design. The main hull, deckhouse and working mechanism are modularized to realize the independence of each unit and the convenience of disassembly and combination, thereby shortening the construction and transportation cycle, and improving the applicability and economy of the dredger.
For modular dredgers, whether in disassembly, assembly or transportation, the lifting of each modular unit is essential. Since the weight and size of each module unit are different, the form and arrangement of the lifting lugs are also different. As far as this ship is concerned, the main pontoon is heavy and has large openings on the deck. Therefore, in addition to heavy lifting ears, Leader Dredger also installs lifting ears on a sturdy frame.
The Leader Dredger dredger uses a diesel engine.
When we choose the engine brand, we will test the engine performance
1. Matching degree with dredging pump
2. Is the engine power output stable?
3. Continuity of trouble-free operation
4. Fuel consumption
5. Durability
6. Volume and weight
7. After-sales response speed
8. Maintenance costs
Better engines can ensure the practicality, economy and rationality of pond dredge
Dredging pump is one of the main working parts of cutter dredger. It is a device that sucks the mixture of soil and water cut by the reamer out of the water surface, and realizes the transfer of the earthwork through the suction pump. Power consumption generally accounts for 60% to 70% of the energy supply of the whole ship, and its working characteristic parameters roughly represent the performance of the dredger
In the dredging process, the suction pump must have a large suction capacity. The equipment for relative movement inside the suction pump mainly includes: liner, impeller and pump casing. Their wear is relatively large, so these components are usually made of wear-resistant materials.
The installation position of the suction pump on the dredger is different, and the suction power is different. Therefore, when designing, Leader Dredger will make the most economical design plan.
Large dredge adopts the design of two suction dredge pumps. The underwater pump alone provides stable suction for the reamer. Another dredge suction pump in the cabin is used to strengthen the suction to meet deeper dredging depth or farther discharge distance.
The shell of the double shell pump is not in contact with the mud and is not subject to abrasion, so the double shell pump is much safer than the single shell pump. With the protection of the outer shell, the inner shell can be fully utilized. At the same time, the use of high wear-resistant materials for the inner shell can greatly extend its service life, reduce the operating cost of the dredger, and improve the safety performance of the cutter dredger.
Submersible pumps are widely used in large-scale projects. On the one hand, the addition of submersible pumps increases the depth of digging and increases the concentration. On the other hand, the combination with the tank pump can increase the discharge distance, making the entire suction and discharge system better Automatic adjustment function, better adaptability to working conditions and higher efficiency
In the design and selection of the suction pump, we will select reasonable parameters according to various conditions such as the dredging depth, soil condition, output, and discharge distance of the customer's construction project. And determine the best working condition point of the mud pump, so as to make the whole ship have better economy.
For example, if the discharge distance of a certain project is far, if you blindly increase the head of a single pump, it will inevitably increase the power and invest more in single-party costs for future projects that are not of this type.
Concentration and efficiency are two very important parameters of the suction pump. It is more economical to increase the concentration percentage point than to increase the efficiency percentage point of the suction pump.
There are 32 people in the technology and design department
12 senior technicians
20 technicians.
Can design and have all kinds of dredgers, civil, warships, marine engineering equipment qualifications.
We can do different types of China Classification Society CCS, American ABS, European BV, Italian RINA standard ships, dredgers, ships, etc.
The design of the cutter suction dredger involves disciplines such as mechanical manufacturing, electrical and electronic, hydrodynamics, computer technology, automation science, materials science, marine meteorology and even nuclear physics, and belongs to the category of system engineering design.
Leader Dredger specializes in analysis and design of dredger hull size, winch bridge, winch system, hydraulic system, positioning pile, mud pump system and its professional design, And repeatedly debug the power system, environment, vibration and noise issues
According to the dredging volume, digging depth index and soil quality of the construction project, the specific performance indexes such as the digging depth, soil breaking capacity and production capacity of the cutter suction dredger are determined.
This design concept is not only widely used in general commercial dredging fields, but also in military, scientific research and engineering fields.
The difference is that dredgers that serve commercial projects can improve the performance of cutter suction dredgers to achieve higher production efficiency and economic benefits, while dredgers used in military and scientific research fields can meet the needs of specific projects. Its economic performance is relatively lower.
In the current economic and social environment, a design that only focuses on technical performance without considering product economic indicators is almost impossible. The cutter suction dredger design is also based on practicality, reliability and other technical indicators, fully considering the economic performance in use, and weighing the unified indicators of technical performance and economic performance to achieve better design results.
For more details, please visit -Technical innovation of Leader Dredger
The main services we provide are:
a. We guarantee that the free warranty period for fast wearing parts and non-human damage parts is 1 year. Including all hydraulic parts, all electrical parts, all wearing parts and wearing parts
b. One year later, spare parts will be provided at cost price. Like the engine and gearbox, there is after-sales service in the local area. We will first judge the problem and contact their personnel to save time for resolution
c. Lifetime free consulting service, after-sales service, operation guidance
Leader Dredger has 20 years of experience in the dredger production industry and can provide customized dredger production services for the most demanding projects. It is different from other manufacturers that can only produce standard dredges. Leader Dredger has a design and production team composed of more than 70 people, and has completed the design and manufacturing of more than 100 dredgers.
For more details, please visit -Dredge Service of Leader Dredger
