1. Overhead Traveling Crane Introduction

2. Overhead Traveling Crane Classification

2.1 Single girder overhead crane

2.1.1 Headroom single girder overhead traveling crane

This crane is a new type of crane that our company has introduced and digested advanced foreign technology, guided by modular design theory and modern computer technology. Kingda headroom single girder overhead traveling crane introduces optimization design and reliability design methods. It is completed with imported configurations, new materials, and new processes, and is lightweight, universal, energy-saving, environmentally friendly, maintenance free, and high-tech.
The main beam and end beam are box weld structure, hoist runs on the lower flange. Main beam and end beam are connected by high-strength bolts for easy transportation and on-site installation. The lifting mechanism adopts a new type of electric hoist, which has a compact structure and is easy to maintain.


 

Technical Parameter 

lifting capacity	span	lifting height	working class	lifting speed   (m/min)	weight(kg)		recommend	power    (kw)	Max. wheel
(t)	(m)	(m)			hoist	whole crane	rail		(Kn)
1	9.5	3/6/9/12	A5(2m)	0.8/5	376	958	P24	4.58	8.76
	11					1599			9.51
	12.5					1723			10.45
	16					2220			11.58
	19.5					2835			13.06
	22.5					3532			14.62
	24					3774			16.1
2	9.5	3/6/9/12	A5(2m)	0.8/5	376	1625	P24	4.58	13.5
	11					1784			14.46
	12.5					1970			15.54
	16					2371			17.47
	19.5					3175			18.93
	22.5					3726			20.39
	24					4016			22.38
3	9.5	3/6/9/12	A5(2m)	0.8/5	376	1802	P24	4.58	18.96
	11					2168			20.11
	12.5					2350			21.85
	16					2872			23.51
	19.5					3854		4.49	25.45
	22.5					4549			27.06
	24					4855			30.6
5	9.5	3/6/9/12	A5(2m)	0.8/5	531	2318	P24	7.84	28.2
	11					2566			29.76
	12.5					2816			31.8
	16					3673			33.84
	19.5					4364		8.24	35.62
	22.5					5392			39.78
	24					5754			42.62
10	9.5	3/6/9/12	A5(2m)	0.8/5	928	3260	P38	12.66	51.85
	11					3596			44.44
	12.5					3896			57.7
	16					4889			60.83
	19.5					5913			64
	22.5					7527			67.26
	24					7975			71.36
16	9.5	3/6/9/12	A5(2m)	0.66/4	1420	4284	P43	19.48	83.1
	11					4846			86.1
	12.5					5336			88.5
	16					6305			93
	19.5					8111		20.28	98.4
	22.5					9416			102.3
	24					10065			104.2
20	9.5	3/6/9/12	A5(2m)	0.66/4	1420	4944	P43	19.48	101.1
	11					5441			105.3
	12.5					5906			107.1
	16					6756			111.6
	19.5					8307		20.28	117.1
	22.5					8500			118

2.1.2 China Type Single Girder Overhead Traveling Crane

China type single girder overhead traveling crane compose of by main girder welded by I beam and steel plate, end girder electric hoist and traveling mechanism. The electric hoist runs along the bottom flange of the main girder to complete the material lifting. The crane has the characteristics of lightweight in structure and easy yo install and maintain, widely used in lifting goods in different occasions such as factories, warehouses, and material yards. It is prohibited to use it in flammable, explosive, and corrosive media environments. The working level is A3-A5. There are three operating modes: cable pendant in ground, wireless remote control, and driver's cab. There are two types of cabins: open and closed. The operation of the crane adopts a separate drive form. Crane bridge travels in a separate drive, conical motor brakes and open gear transmit.

Technical Parameter
Lifting Capacity(T)			1-5		10		16	20
Span(m)			7.5-30		7.5-30		7.5-30	7.5-20
Crane travel Mechanism	travel speed(m/min)		20 (Gound)	30 (Cab)	20 Ground)	30 (Cab)	20 Ground)	20 Ground)
	speed ratio		58.78	39.38	58.78	39.38	58.78	58.78
	motor	power(kw)	2*0.8/4*0.8	2*1.5	2*1.5/4*0.8	2*1.5	2*1.5/4*1.5	4*1.5
		rotation speed(n/min)	1380		7.5-22.5/22.5-31.5	7.5-22.5	7.5-14/14-19.5	7.5-31.5
Electric Hoist	Electric hoist		single speed	double speed	single speed	double speed	single/double speed	single/double speed
	Lifting speed(m/min)		8	8/0.8	7	7/0.7	3.5	3.5
	Cross speed(m/min)		20		20		20	20
	Motor		cone squirrel-cage model		cone squirrel-cage model		cone squirrel-cage model	cone squirrel-cage model
working class			A3   A4   A5		A3   A4   A5		A3   A4   A5	A3   A4   A5
Power voltage			380V-690V		380V-690V		380V-690V	380V-690V
wheel diameter(mm)			Φ270		Φ270		Φ270	Φ270
Rail width			37-70mm		37-70mm		51-70mm	51-70mm

2.2 Single Girder Suspension Overhead Traveling Crane

Single girder overhead traveling crane consists of main girder welded by steel plate and I-beam, end girder, electric hoist and electric trolley. The crane is hung on I-beam on the upper of the workshop, cantilever is from 0.5~1m, the electric hoist runs along the bottom flange of the main girder I-beam to complete the lifting work. The single girder suspension crane features with lightweight in structure, easy to install and maintain, widely used in production workshops, warehouses and freight yards. Crane working level is from A3 to A5.

Technical Parameter
Lifting Capacity(T)			0.5	2	3	5	10
Span(m)			1-18	1-18	1-18	1-18	1-18
Crane travel Mechanism	travel speed(m/min)		20/30	20/30	20/30	20/30	20/30
	motor	power(kw)	0.4*2	0.4*2	0.4*2	0.4*2	0.8*2
		rotation speed(n/min)	1380	1380	1380	1380	1380
Electric Hoist	Electric hoist		double speed	double speed	double speed	single/double speed	single/double speed
	Lifting speed(m/min)		8/0.8	8/0.8	8/0.8	8/0.8	3.5
	Cross speed(m/min)		20/30	20/30	20/30	20/30	20
	Motor		cone squirrel-cage model	cone squirrel-cage model	cone squirrel-cage model	cone squirrel-cage model	cone squirrel-cage model
working class			A3   A4   A5	A3   A4   A5	A3   A4   A5	A3   A4   A5	A3   A4   A5
Power voltage			380V-690V 3 phase 50 Hz	380V-690V 3 phase 50 Hz	380V-690V 3 phase 50 Hz	380V-690V 3 phase 50 Hz	380V-690V 3 phase 50 Hz
wheel diameter(mm)			130		130	130	150
工Rail			120a-145c		I 32a-I 45C	I 32a-I 45C	I 40b-I 63C

2.3 Hook Crane

2.3.1 Headroom Electric Overhead Traveling Hook Crane

Headroom electric overhead traveling hook crane is a widely used lifting equipment, mainly composed of box weld beam, hoisting trolley, travelling mechanism, and electrical control system, load handing device is hook. There are rails laid on the main beam for hoisting trolley to move horizontally along the direction of the main beam. Main beam and end beam are weld in box form, there are joints, bolts or pin shafts arranged in the middle of the end beam for dismantling and transportation of the bridge. There are three operating modes available: cable pendant on the ground, wireless remote control, and driver's cab.

2.3.2 Traditional Overhead Traveling Hook Crane 

2.4 Electric Hoist Overhead Traveling Crane

2.4.1 Headroom Electric Hoist Overhead Traveling Crane

Headroom electric hoist overhead traveling crane is a new type of crane introduced and digested advanced foreign technology, guided by modular design theory and modern computer technology. It adopts optimized design and reliable design methods, and is completed with imported configurations, new materials, and new processes, which is lightweight, universal, energy-saving, environment friendly, maintenance free, and high-tech.

2.4.2 Traditional Electric Hoist Overhead Traveling Crane

2.5 Side Hung Trolley Type Single Girder Traveling Crane

This crane consists of box weld main girder, end girder, hoisting trolley and traveling mechanism. The electric hoist is installed on the angle shaped trolley as the lifting mechanism, and the angle shaped trolley is arranged on one side of the main girder for traveling. The trolley is equipped with upper and lower flat wheels, which are arranged at three points with the vertical traveling wheel.
The position of the electric hoist has been raised from the traditional bottom of the main girder to the upper side of the main girder, effectively improving the lifting height. The hoisting trolley is driven by conical motor and open gear transmission. The main girder is box weld structure. Horizontal wheels are installed above and below the deviation rail, which is safe and reliable, and can prevent rail biting. Crane bridge travels in a separate drive, conical motor brakes and open gear transmit.

2.6 Magnet Overhead Traveling Crane

2.6.1 Overhead Traveling Crane with Slewing-Hanging beam

This crane is used for transporting black metals such as long slabs and bars, etc. Slewing is achieved in two forms: one form is the hanging beam slewing, which means the hanging beam is a double-layer structure. The upper hanging beam is wrapped with a pulley group and steel wire rope, and the lower hanging beam is equipped with multiple electromagnet or clamps, which can rotate at a certain angle with the driving mechanism.
Another form is slewing trolley, which means the trolley is a double-layer structure, with a lifting mechanism arranged on the upper trolley and a traveling mechanism on the lower trolley. A circular rail is laid on lower trolley, and the upper trolley can slew along the circular rail.

Hanging Beam Slewing Crane Technical Parameter
Clean lifting capacity			T	15	25	30
working class				A6
span			m	34.3	46.3	53.3
Lifting height			m	5.5	5	5
speed	lifting		m/min	12.2	11.8	12
	traveling	cross travel		38 . 7	38	40.8
		long travel		82. 5	82.5	82.5
	hang beam	Rotation		1	1	1
		telescoping		5/10	5/10	5/10
Max wheel pressure			Kn	220	325	410
Recommended rail				QU100
power source				380-600V 3Phase 50hz

 

Slewing Trolley Crane Technical Parameter
Lifting capacity			T	5+5	10+10		16+16		25+25
working class				A6	A7		A6		A6
span			m	28.5	25	34	25	33	25
Lifting height			m	12	16	16	10	16	10
speed	lifting		m/min	12.4	12.6	12.6	14.8	16	15.4
	traveling	cross travel		44.2	42.2	42.4	39	48	40
		long travel		102	85.2	85.2	106	101	107
	hang beam	Rotation	r/min	1.5	1.36	1.36	1.36	1.85	1.4
Max wheel pressure			Kn	65	190	210	255	260	335
Total power			kw	50.2	114.8	128.8	151.3	196	243.5
Recommended rail				43kg/m	QU80				QU100
power source				380-600V 3Phase 50hz

2.6.2 Magnet crane with hanging beam

This crane uses hanging beams to lift long steel billets, plates, bars, coils, and other items, equipped with magnetic chuck or clamps or special group hooks for lifting. It mainly consists of a box weld bridge, a lifting trolley, crane traveling mechanism, driver's cab and electrical control system, equipped with a power off  magnetic-function keep system.
The lifting mechanism often adopts a single motor, double reducer, and double drum layout, in the form of double lifting points. The arrangement of hanging beams can be divided into two types: perpendicular to the main beam or parallel to the main beam, the remaining forms are the same as hook cranes.

Technical Parameter
Lifting capacity				t	5+5	7.5+7.5	10+10	16+16	20+20
span				m	31.5	31.5	31.5	31.5	31.5
Max lifting height				m	16	16	12	16	12
working class					A6
speed	lifting	main	A6	m/min	13.2	13	13	9.5	11.8
		Auxiliary	A7		15.7	12.5	13.5	13.6	15.22
	Cross travel				43.8	44.8	45	43	38.9
	long travel		A6		112.5	101.4	102..5	86.8	87.3
			A7		114.9	100.6	119.6	119	119.2
Weight	trolley		A6	Kg	6900	8500	8900	13200	17500
			A7		7200	8900	9300	14100	18100
	total weight		A6	Kg	41200	47300	49300	69500	72100
			A7		43200	49800	51200	73500	78700
Max wheel pressure			A6	kn	183	241	269	381	473
			A7		189	247	273	392	489
Recommended rail					43kg/m
Power source					380-600V 50HZ 3 Phase

2.6.3 Electromagnet Overhead Traveling Crane

The basic structure of an electromagnet overhead traveling crane is the same as that of a hook overhead crane, except that a DC lifting electromagnetic chuck is hung on the hook to lift magnetic black metal and its products. The AC power is converted into DC power through a thyristor DC box installed in the driver's cab, and then the DC power is sent to the electromagnetic chuck through a dedicated cable reel installed on the trolley.


 

Technical Parameter
Lifting capacity				t	5	10	20/5   main hook with electromagnet	32/5  auxiliary hook with electromagnet
span				m	31.5	31.5	31.5	31.5
Max lifting height		main hook		m	16	16	12	16
		auxiliary hook					18	18
working class					A6
speed	lifting	main	electromagnet	m/min	15.6	13	13	9.5
		Auxiliary					14.6	15.5
	Cross travel				39.5	43.8	44.6	43.4
	long travel				93.7	86.4	89	75.3
Weight	trolley			Kg	2496	4662	6822	12210
	total weight			Kg	32840	39200	42820	57140
Max wheel pressure				kn	134	173	214	341
Recommended rail					43kg/m
Power source					380-600V 50HZ 3 Phase
electromagnet		Model			MW1-16	MW1-16	MW5-180L	MW5-210L
		Attracting weight		kg	3330	8330	14500	21000
		Dead weight			1670	1670	4230	7000
		Diameter		mm	1180	1180	1800	21000

2.7 Double Trolley Overhead Traveling Crane

The difference between a double girder trolley overhead traveling crane and a hook overhead traveling crane lies in the installation of two hoisting trolley on the main girder, which can be lifted or operated independently; When it is necessary to lift long items, synchronous lifting and running can be achieved through the conversion switch on the control console.

2.8 Grab Overhead Traveling Crane

Grab overhead traveling crane consists of box-weld bridge, grab trolley, long traveling mechanism, driver cabin and electric control system. The retrieval device is grab. Grab trolley is equipped with lifting and closing mechanism, and the grab is separately winded in the lifting and open-close drum by 4 wire rope. The open-close mechanism drives the grab to close and grab  material; When the grab outlet is closed, the lifting mechanism is started immediately, make 4 wire rope having same stress and carrying out lifting action. Only open-close mechanism is under working, along gran outlet is open, the material is poured out. Except the lifting mechanism is different, the others is the same compared with hook overhead traveling crane.

  

Technical Parameter
Lifting capacity				t	5	10	16	20
span				m	31.5	31.5	31.5	31.5
working class				A6
Lifting height				m	20	18	22	26
speed	lifting			m/min	40.1	40.7	41.8	48.6
	Cross travel				44.6	45.6	43.2	43.2
	long travel				86.4	89	87.3	87.3
Weight	trolley			Kg	5200	8200	14800	19300
	total weight		indoor		41300	50400	67900	75600
			out door		42100	51200	69000	76800
Max wheel pressure			indoor	kn	144	196	263	312
			out door		148	201	268	316
Grab	Model	113	110	106	102	130	148	144
	Type	light	medium	heavy	super heavy	super heavy	heavy	super heavy
	Volume(M3)	2.5	1.5	1	0.75	2.5	4	3
	Density t/m3	1-1.7		1.7-2.5	2.5-3.3	2.5-3.3
	Dead weight(kg)	2632	2615	2568	2546	8305	10123	9927
Recommended rail					43kg/m		QU70
Power source					380-600V 50HZ 3 Phase