Your Professional Portal Crane Supplier
Our goal is to become your true partner in the field of crane in China. Jiangsu Zhendong Port Machinery Manufacturing is a professional port machinery manufacturing enterprise integrating product research and development, design, manufacturing and installation of port cranes. Our company has a strong technical force and experienced installation, debugging and after-sales service team. We serve customers with regular cycles, preferential prices, and good reputation, and continue to innovate and go global.
Why Choose Us
Our Certification
Our products have passed the international ISO9001:2000 standard quality system certification and CCS China Classification Society quality system certification, and have passed the ISO9001 quality management system certification. The company has the right to import and export on its own.
Product Application
Our main products include fixed load luffing cranes, fixed rack luffing slewing cranes, slewing hydraulic cranes, floating cranes, hydraulic cranes, etc. These products are widely used in cargo loading and unloading, stacking, dredging and lightering of engineering ships, and dock lifting operations in ports, power, metallurgy, and mining enterprises.
Production Equipment
Our company has gantry cranes, magnetic drills, CNC flame cutting machines, inverter CO2 gas shielded welding machines, CG1-30 semi-automatic flame cutting machines, submerged arc welding machines MZ-1000, bending machines, plate rolling machines, shearing machines, milling machines, lathes, sawing machines and other equipment.
Product Market
Relying on strong scientific research strength, our company's leading products have covered cities such as Shanghai, Dalian, Shenzhen, and Qingdao. Our products have opened up the international market and are exported to Southeast Asia, Africa, and developed countries in Europe.
Four-link portal cranes are a type of heavy-duty lifting equipment used in port and harbor environments for the loading and unloading of cargo from ships. They are designed to handle containers, bulk goods, and heavy equipment.
The portal crane consists of a four-link structure made up of four main beams that support the load. The beams are attached to two support structures on either side of the crane, which allows for a wider working range and increased lifting capacity.
Four-link portal cranes are capable of lifting loads up to 100 tons or more, depending on the model. They feature advanced control systems for precise and safe operation, and can be equipped with a range of accessories such as spreader beams, clamshell buckets, or magnets.
These cranes are commonly used in container terminals, bulk cargo ports, and industrial facilities. They offer a high level of flexibility and productivity, enabling efficient cargo handling and minimizing downtime.
Overall, four-link portal cranes are a reliable and effective solution for heavy-duty lifting tasks in port and harbor environments.
Technical Parameters
|
Parameter |
Unit |
MQ1025 |
MQ1030 |
MQ1625 |
MQ1630 |
MQ4033 |
MQ4540D |
|
Rated lifting capacity |
T |
10/10 |
10/10 |
16/16 |
10/16 |
40/25 |
45/15 |
|
Working range (A-B) |
N |
9~25 |
8.5~30 |
9~25 |
10~25/10~30 |
10~22/10~33 |
14~16/14~40 |
|
Lifting height on rail C |
N |
18/14 |
25/16 |
15/10 |
28/18 |
22 |
36 |
|
Lifting height on rail D |
N |
16 |
15 |
10/20 |
10 |
13 |
8 |
|
Lifting speed |
N/nin |
22/45 |
"-/60 |
25/50 |
40/60 |
25/50 |
8~15.5 |
|
Luffing speed |
N/nin |
40 |
52 |
40 |
50 |
45 |
16.5 |
|
Rotation speed |
N/nin |
1.5 |
1.6 |
1.4 |
1.5 |
1.2 |
0.4 |
|
Walking speed |
N/nin |
20 |
27 |
26 |
27 |
25 |
26 |
|
Track gauge/base gauge |
N |
10.5/10.5 |
10.5/10.5 |
10.5/10.5 |
10.5/10.5 |
10.5/10.5 |
10.5/10.5 |
|
Maximum wheel pressure |
KW |
25 |
25 |
25 |
25 |
25 |
24 |
|
Installed capacity |
KW |
276 |
290 |
389 |
298 |
477 |
204 |
- Automatic follow-up function for full rotation of the spreader
- Adopt active inverter technology; it can convert the kinetic energy and potential energy stored in the machine into electrical energy, which can be efficiently fed back to the power grid
- Inhibit the pollution of high-order harmonics to the power grid and improve the power factor of the whole machine
- Record all the parameters of the action in one or more working cycles, and realize the automatic cycle execution of this action by the grab through reasonable optimization of the calculation of the wiring harness and the acceleration and deceleration time
- Calculate the running acceleration of the lifting point according to different actions, set up segmented protection, find out the stalling trend in advance, combine with the hardware overspeed switch, realize double protection, and prevent the occurrence of stalling accidents limitedly
- When the spreader is lifted to a limited height, the control relay will make the buzzer on the control box alarm, and at the same time the lifting action will stop, and only the lowering operation can be performed, so as to prevent the lifting hook from being over-rolled
Four-Link Portal Crane Safety Devices
Overload Limit Switch
Rubber Buffers
Electric Protective Devices
Emergency Stop System
Voltage Lower Protection Function
Current Overload Protection System
Rail Anchoring
Lifting Height Limit Device
Portal crane devides into two types
One is single-link portal crane, and the other is four-link portal crane.
Four-link portal crane
Four-link portal crane has been extensively applied to loading and unloading at port and materiel handing at dockyard and metallurgy industry, the mainstructures are composedof steel frame, lifting mechanism, luffing mechanism, slewing mechanism, traveling mechanism,spreader device (grab, container spreader, and hook and electric dist), electrical equipment and other accessory equipments for safety.
Single-link portal crane
Single-link portal crane is a kind of hoisting machine especially used inport,harbour, dock, shipyard with small investment for loading and unloading front apron container, sundries and bulk cargo.It mainly includes the following units: crane strong steel frame, lifting mechanism,luffing mechanism, slewing mechanism, traveling mechanism
Working Principles
The four-link level luffing crane operates on a mechanism consisting of four links joined together by pins. The crane boom is suspended from the top of the fourth link and moves up and down as the links pivot around the pins. The first and second links are fixed to the crane base, while the third link is connected to a hydraulic cylinder that controls the luffing motion of the boom.
As the hydraulic cylinder extends and retracts, the third link moves and causes the fourth link and the boom to luff up and down. The fourth link is also capable of slewing around the crane base, which allows the crane to move the load horizontally.
The four-link level luffing crane is designed for efficient and precise load handling in construction, shipbuilding, and other heavy industries. Its unique mechanism provides stable lifting and lowering of loads with minimal swinging and swaying, making it ideal for operations in confined spaces or areas with high wind loads.
Packaging & Delivery
|
Packaging Details: |
Mechanical part packing by plastic bag, electric parts by wooden box or standard exporting packing/ Electrical and other parts are packaged by high quality plywood crates, main beams are packaged by Plastic Film |
|
Delivery Detail: |
Within 30 days after received your advance payment |
We're well-known as one of the leading portal crane manufacturers and suppliers in China. Please feel free to buy high quality portal crane for sale here from our factory. Contact us for more details.
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