Marine Telescopic Boom Crane

Marine Telescopic Boom Crane

Application

A marine telescopic boom crane is a type of crane used on ships, offshore platforms, and other marine vessels to lift and move heavy loads. It consists of a telescoping boom that can be extended and retracted to reach different distances, as well as various mechanical, hydraulic, and electrical components that allow it to lift and maneuver loads in various directions. Compared to other types of marine cranes, such as knuckle boom cranes, telescopic boom cranes have a longer reach and can lift heavier loads, making them ideal for heavy lifting operations. They are commonly used in offshore construction, ship loading and unloading, and other marine applications where large loads need to be lifted and moved over a long distance.

For more marine telescopic boom cranes specifications, please click here.

Advantages and Features

1. Contract structure, high strength;

2. Saving space, multi-function;

3. Easy for maintenance, lubrication and inspection.

4. High strength construction, high performance.

5. Can be designed and manufacture to suit customers applications and special operating requirements.

6. General motor or explosion-proof motor.

7. Automatic & manual overload protection system.

8. 360° continuous rotation with limits available

9. Certificate: BV, LR, RINA...

Marine Telescopic Boom Crane 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

Part Name	Type/Material	Advantages/Disadvantages
Slewing Bearing	42CrMo	It has high strength and toughness, good hardenability, no obvious temper brittleness, high fatigue limit and multiple impact resistance after quenching and tempering treatment, and good low-temperature impact toughness.
	50Mn	The wear resistance, strength, elasticity and hardness are all high, and they are mostly used after quenching and tempering, and the welding performance is poor. Generally used to manufacture parts with high wear resistance and high stress.
	S45C	Cold plasticity in general, annealing and normalizing are slightly better than quenching and tempering; annealing and normalizing are slightly better than quenching and tempering; they have higher strength and better machinability; Toughness, plasticity and wear resistance.
Hoisting Winch	A32 & E36	Medium weldability, cold deformation, medium plasticity, good machinability; corrosion resistance.
	Q345-B	High strength and good welding performance.
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.
Other Parts	Q345-B	Higher strength and better weldability.
	A32 & E36	Medium weldability, cold deformation, medium plasticity, good machinability; corrosion resistance.

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
Slewing Bearing	S45C	Toughness, plasticity and wear resistance are poor, cold plasticity is average	42CrMo	It has high strength and toughness, and good hardenability; after quenching and tempering treatment, it has high fatigue limit and multiple impact resistance, and has good low-temperature impact toughness.
Hoisting Winch	ZG270-500	Casting defects cannot be avoided	A32 & E36	Medium weldability, cold deformation, medium plasticity, good machinability; corrosion resistance.
			Q345-B	High strength and good welding performance.
Hydraulic Motor Type	Other brands	High power consumption, relatively poor quality.	DONGFANG or XINGHONG brand	Cost-effective, good quality. With brake, high safety.
Other Parts	Q235-B	The use of products with small load has low strength, which is not conducive to the use of products with excessive load.	Q345-B	Higher strength and better weldability.
			A32 & E36	Medium weldability, cold deformation, medium plasticity, good machinability; corrosion resistance.

Drawing of Marine Telescopic Boom Crane

Main Technical Specification

Safety Load	Max Outreach	Lifting Speed	Slewing Speed	Luffing Time	Hoisting Height	Slewing Angle
kN	m	m/min	m/min	s	m	゜
10	6-20	15	1	60	30	360゜
15	8-22	15	1	60	30	360゜
20	5-24	15	1	60	30	360゜
30	8-25	15	0.9	70	30	360゜
50	12-25	15	0.75	80	30	360゜
80	12-25	15	0.75	100	40	360゜
100	12-25	15	0.75	110	40	360゜
150	12-28	15	0.6	110	30	360゜
Above specifications only for reference, We can supply various marine cranes according to your requirements.

Repair and maintenance advice

Regular inspection, maintenance and management The lifting machinery users should always check and maintain the lifting machinery in use, and formulate a regular inspection management system, including daily inspection, weekly inspection, monthly inspection, annual inspection, and dynamic monitoring of cranes. Any abnormal situation can be found at any time and dealt with in time, so as to ensure the safe operation of the hoisting machinery.

(1) Daily inspection

The routine maintenance items that the driver is responsible for are cleaning and sanitation, lubricating the transmission parts, adjusting and tightening. The sensitivity and reliability of the safety device are tested by running, and whether there is any abnormal sound during operation.

(2) Weekly inspection

It is jointly carried out by the maintenance worker and the driver. In addition to the daily inspection items, the main contents are the appearance inspection, the safety state of the hook, the pick-up device, the wire rope, etc., the sensitivity and reliability of the brake, clutch, and emergency alarm device. Observe the transmission parts for abnormal noise and overheating.

(3) Monthly inspection

The inspection is organized by the equipment safety management department and carried out together with the relevant personnel of the user department. In addition to the weekly inspection content, the state inspection of the power system, hoisting mechanism, slewing mechanism, operating mechanism and hydraulic system of the hoisting machinery is mainly carried out. For the electrical control system, check whether the feeder, controller, overload protection and safety protection device are reliable. Check the failure symptoms caused by the leakage, excitation, temperature, vibration, noise and other reasons of the lifting machinery through the test operation. After observation, the structure, support and transmission parts of the crane are subject to subjective inspection under the state, so as to understand and grasp the technical state of the whole crane, and check and determine the fault source of the abnormal phenomenon.

(4) Annual inspection

The leader of the unit will organize the equipment safety management department to take the lead and jointly carry out with the relevant departments. In addition to the monthly inspection items, the technical parameter testing and reliability test of the hoisting machinery are mainly carried out. The wear and tear of the metal structure, the welding seam of the metal structure, the test flaw detection, and the test of the safety device and components are used to evaluate the technical status of the operation of the lifting equipment. Schedule major repairs, renovations, and renovations.