Hydraulic Double Drum Winch
Application
A hydraulic double drum winch is a type of winch that uses hydraulic power to operate two drums that can simultaneously pull in or pay out two cables or ropes. It is commonly used in heavy-duty applications such as offshore oil and gas operations, marine towing, and construction projects where precise control and high lifting capacity are required. It can work with double drum at the same time, or it can work independently with only one drum. The hydraulic motor is equipped with an control valve, which can adjust the speed indefinitely.
A hydraulic double drum winch typically works by using hydraulic power to rotate two drums in opposite directions. The winch is typically mounted on a base or platform and can be operated using controls located on the winch or remotely via a control system. To use the winch, a cable or rope is wound onto the drums, and tension is applied to the cable or rope as it is used to pull or lift a load. The hydraulic system can adjust the speed and direction of the drums to control the movement of the load. Safety mechanisms such as brakes and limit switches may also be incorporated into the winch to ensure safe and efficient operation.
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Advantages
1. Compact structure, high strength;
2. Working steadily and smoothly'
3. High security, high efficiency;
4. Excellent performance, low noise;
5. Corrosion resistance, long lifespan;
6. Easy installation, easy maaintenance;
7. Local control and remote control;
8. Manual or hydraulic brake and clutch;
9. Can be customized according to your needs;
10. Certificate:BV, LR...
Hydraulic Double Drum Winch Structure
We not only provide customers with high-quality products, but also provide complete system solutions and high value-added services for specific customers. Therefore, it has strong competitiveness.
Configuration options
Part Name
Type/Material
Advantages/Disadvantages
Drum
Q235-A
It has good toughness and plasticity, has a certain elongation, and has good weld-ability and hot work-ability. Q235A is generally used in the hot-rolled state. CCS no longer needed Q235A.
Q235-B
Has a certain elongation, strength, good toughness and cast-ability, easy to stamp and welding. Suitable for products with small loads.
Q345-B
Good comprehensive performance, good low temperature performance, good cold stamping performance, good welding performance and machinability. (High strength, good welding performance).
Warping head
ZG270-500
Medium carbon cast steel has certain toughness and plasticity, high strength and hardness, good machinability, acceptable weldability, and poor casting performance than low carbon steel. Casting defects cannot be avoided.
ZG270-500 Precision Casting
Cost-effective
Q345-B
The high strength of welding warping head.
Reduction Gearbox
Domestic second-tier brands
Poor quality and short service life.
Domestic first-line brand
Cost-effective and long service life.
*Homemade (recommended)
Good quality, high cost.
Cluth
ZG270-500
Medium carbon cast steel has certain toughness and plasticity, high strength and hardness, good machinability, acceptable weldability, and poor casting performance than low carbon steel. Casting defects cannot be avoided.
Q345-B
Good quality, high cost.
45
Good cutting performance, high hardness after quenching, good toughness and certain wear resistance after quenching and tempering. Good quality, high cost.
Brake
Q345-B
CCS regulations
Hydraulic Motor Type
DONGFANG and XINHONG brand
Good quality, cost-effective, long service life. With brake, high safety.
Other brands
High power consumption, relatively poor quality.
Pedestal
Q235-B
Suitable for products with small loads.
Q345-B
High strength and good welding performance.
Due to the fierce market competition, the phenomenon of low quality of other winch suppliers is frequent. What is the difference between us and other low-quality suppliers?
The specific differences are as follows:
Part name
Other low quality suppliers
Result
Our factory
Consequence
Drum
To reduce costs, reduce the thickness of the drum.
The thickness of the drum is too thin, which is not conducive to the load and wears quickly.
Produced in strict accordance with product production standards, with moderate thickness.
The thickness is moderate, which is good for loading, wears slowly, and does not cause the product to be too heavy to increase the transportation cost.
Warping head
ZG270-500
Casting defects cannot be avoided
Q345-B
High welding strength and slow wear.
Reduction Gearbox
Domestic second-tier brands
Poor quality and short service life.
Homemade or domestic first-line brands
Good quality and cost-effective.
Cluth
ZG270-500
Casting defects cannot be avoided.
Q345-B
Good quality and cost-effective.
Brake
Q345-B
Good quality and cost-effective.
Q345-B
Good quality and cost-effective.
Hydraulic Motor Type
Other brands
High power consumption, relatively poor quality.
DONGFANG or XINGHONG brand
Cost-effective, good quality. With brake, high safety.
Pedestal
Q235-B
Low strength, suitable for products with small overload; Used for heavy loads winches, wear out quickly and break easily.
Q345-B
Higher strength, slower wear, not easy to break, suitable for both small and large load winches.
Drawing of Hydraulic Double Drum Winch
Specification
| Drum load | Holding load | Nom.Speed | Hydro-motor model | Rope dia. | |||
| Nylon | Wire Rope | ||||||
| T | kN | T | kN | m/min | mm | mm | |
| 5 | 50 | 15 | 150 | 15 | 1.6LJM | 45 | 20 |
| 8 | 80 | 24 | 240 | 15 | 3.15LJM | 50 | 26 |
| 10 | 100 | 31 | 310 | 15 | 3.15LJM | 55 | 28 |
| 12.5 | 125 | 36 | 360 | 15 | 3.15LJM | 64 | 30 |
| 16 | 160 | 48 | 480 | 15 | 3.15LJM | 75 | 38 |
| 20 | 200 | 63 | 630 | 15 | 90 | 40 | |
Hydraulic Double Drum Winch in Factory
Drum(Nylon wire size )
Capacity
Main dimension(Nylon wire size )
D1
D2
L
L1
L2
L3
H1
H2
B
mm
mm
mm
m
mm
mm
mm
mm
mm
mm
480
820
650
180
1100
950
3150
550
1150
1800
480
880
820
200
885
1140
3205
550
1800
1180
540
930
840
200
1090
1140
3490
800
1460
2100
540
950
820
200
1020
1160
3540
850
1600
2100
660
1150
890
200
790
1230
3850
870
1680
2200
650
1150
1000
250
820
1370
4200
820
1680
2100
Above specifications only for reference, we can supply various winches according to your requirements.
Installation Reference
1. The positioning of the base of the marine hydraulic winch from the centerline of the ship, the frame number position and the height from the midline of the deck must meet the requirements of the base drawing.
2. The installation and inspection of the base of the marine hydraulic winch is qualified.
3. When using a steel backing plate, the plane of the base fixing backing plate should be processed first, the flatness is ≤2mm, the surface roughness is Ra3.2, and the outward slope is 1:100.
4. After installing the marine hydraulic winch, use the hanging wire method or the laser method to confirm the horizontal axis of the marine hydraulic winch drum, the tolerance is 3mm/m, the height and the distance from the midship position are ±5mm, and the inspection is qualified.
5. Whisk with steel backing plate.
5.1 Measure the distance between the flat surface of the base fixing pad at each screw hole and the fixing pad at the bottom of the common base. The adjustment pads at each point were prepared respectively, and the surface roughness was Ra3.2.
a) No less than 2~3 contact points per 25mm×25mm of contact surface;
b) Use a 0.10 feeler gauge to partially insert the depth of not more than 10mm;
c) Check the contact ratio between gaskets by colouring method ≥ 50%;
d) The thickness of the steel backing plate shall not be less than 12mm;
e) The thickness of the cast iron backing plate shall not be less than 18mm.
5.2 After the backing plate is qualified for inspection, spot welding the adjustment backing plate and the base fixing backing plate at the part that needs to be reamed, and drills holes according to the position of the anchor bolts of the common base of the winch, leaving a reaming allowance of 2mm.
5.3 The winch, adjusting pad, and hull base are equipped with reaming holes.
5.4 Prepare reaming bolts. Double nuts are used to fasten and prevent loosening. Leave a margin of 5mm~10mm for the length of the bolt.
5.5 Prepare the stop wedge pad according to the requirements of the drawings, and the surface roughness of its mating surface is Ra3.2.
a) Its contact surface is not less than 3 points per 25mmX25mm;
b) Use a 0.05 feeler gauge to partially insert the depth of not more than 10mm;
c) Check the wedge-shaped gasket contact ratio ≥ 60 ~ 70% by coloring method;
d) The contact slope between the wedge-shaped gaskets is 1:50;
e) After the adjustment is completed, the wedge-shaped gaskets are fixed by spot welding.
6. Epoxy resin casting pad.
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