Dock Portal Crane

Description

Dock portal crane is a large rotary crane for ports. Its structural design fully takes into account stability, load capacity and operating flexibility. It is widely applied in port loading and unloading, shipyards and large industrial sites. The whole machine is mainly composed of four parts: metal structure, working mechanism, electrical system and safety device, and has the characteristics of complex structure and complete functions.

Metal structural part includes a gantry, a slewing platform, a boom system and a balance system. The gantry frame adopts a box-shaped cross-section welded structure, consisting of rigid legs on both sides and upper beams to form a stable door-shaped frame. It can withstand huge vertical loads and overturning moments. Slewing platform is on the top of the gantry through large slewing support, supporting the lifting mechanism, luffing mechanism and the slewing mechanism. The boom system mostly adopts a truss-type or box-type structure, and the pitch movement is achieved through the magnitude-changing mechanism. Some dock portal crane uses a combined boom system, which forms a four-link mechanism through the elephant nose bridge and a rigid pull rod to ensure that the goods move approximately horizontally.

The working mechanism includes lifting mechanism, boom luffing mechanism, slewing mechanism and crane operation mechanism. The lifting mechanism consists of a motor, a reducer, a brake and a wire rope reel, which can achieve vertical lifting of heavy objects. Amplitude variable controls the elevation angle change of the boom, and the common ones are wire rope swing and rack swing. Slewing mechanism is driven by a vertical speed reducer motor, so that portal crane can operate 360° fully slew.

Advantages of Portal Crane

Efficient operation ability
Dock portal crane adopts a full swing design, combined with a flexible amplitude change mechanism and a large carriage walking system, which can efficiently cover the working area within 360°. Its lifting speed, amplitude speed and slewing speed is accurately adjustable, especially suitable for ports, shipbuilding, greatly improving logistics turnover efficiency.

Excellent stability and load-bearing capacity
The solid door-shaped base structure and an optimized balance system make portal crane have extremely strong anti-population capability. It adopts multi-fulveal support and heavy wheel rail system, which can stably lift dozens to hundreds of tons of cargo. And it can operate safely even under strong winds or complex working conditions, ensuring the reliability of heavy equipment lifting and bulk cargo handling.

Wide range of working conditions
The modular design allows it to adapt to different operating needs by replacing spreaders, adjusting the length of the boom or installing special devices. Whether it is container loading and unloading, bulk cargo handling or large-scale equipment installation, the portal crane can meet diversified needs through configuration adjustment, and show excellent applicability in many fields.

Application

Port Terminal Operation: For loading and unloading containers, steel and other heavy cargoes, providing efficient material handling solutions for cargoes of different sizes and weights.
Shipyards and ship repair yards: Suitable for lifting and assembly of large components during ship construction and maintenance, ensuring construction progress and quality and improving work efficiency.

Paramètres techniques

Basic Parameters	Rated Lifting Capacity	Hook (t)	10	16	25	40	60	80
	Rated Lifting Capacity	Grab(t)	10	16	25	40	40	40
	Min. Working Range (m)	Above the Rail Surface(m)	20	25	25	28	30	35
	Min. Working Range (m)	Below the Rail Surface (m)	10	10	15	15	18	20
	Max.Working Range(m)		30	35	35	35	40	45
	Min.Working Range (m)		8.5	8.5	9.5	11	12	12
	Slewing Radius of Tail(m)		6.5	7	7.5	8	9	9.5
	Rail Gauge(m)		10.5/12	10.5/12	10.5/12/14	10.5/12/14/16	12/14/16	12/14/16
	Base Distance(m)		10.5/12	10.5/12	10.5/12/14	10.5/12/14	12/14/16	12/14/16
Vitesse	Lifting Speed	Full Load(m/min)	40	40	50	50	40	30
	Lifting Speed	No Load(m/min)	60	60	80	80	70	50
	Luffing Speed(m/min)		40	40	50	50	30	30
	Slewing Speed(r/min)		1/1.2/1.5	1/1.2/1.5	1/1.2/1.5	1/1.2/1.5	0.8/1	0.8/1
	Crane Traveling Speed (m/min)		25/30	25/30	25/30	25/30	25/30	25/30
Number of Wheels			16/20	20/24	24/32	32	32/40	40
Max.WheelLoad			250	250	250	250	300	300
Rail Type			QU80	QU80	QU100	QU100	QU100	QU100
Power Suppl			3 phase AC 380V 50HZ