Explosion-proof Single Girder Overhead Crane:

• Type:LB
• Lifting Capacity:1~20t
• Lifting Height: 1~30m
• Span:7.5~28.5m
• Working Duty:A3
• Ambient Temperature:-20~40℃

Features of Explosion-proof Single Girder Overhead Crane:

1. Simple structure，strong rigidity.
2. Good in usability, easy to manufacture.
3. Normal speed or  frequency control, stable traveling.
4. The explosion-proof form is Exd
5. Explosion-proof mark is ExdⅡBT4 or ExdⅡCT4，temperature group is T1—T4 inflammable gas, explosive gas of steam and air mixture.
6. Motor and other electrical parts should be chosen according to the explosion class.
7. The manufacture and inspection of   Explosion-proof motor electrical parts should be according to GB3836.2-2000.

Technical Drawings of Explosion-proof Single Girder Overhead Crane:

Explosion-proof Electric Wire Rope Hoist Section Parts:

Technical Specification Parameters of Explosion-proof Electric Hoist:

Technical Specification Parameters of Explosion-proof Single Girder Overhead Crane:

LB Explosion-proof Single-girder Overhead Crane with Electric Hoist - 1t

Span(S)	m	7.5	10.5	13.5	16.5	19.5	22.5	25.5	28.5
Lifting Speed (normal)	m/min	8 (0.8)
Trolley Speed	m/min	20
Crane Speed	m/min	20
Lifting Motor	kW	1.5 / 0.2
Trolley Motor	kW	0.2
Control		Ground control
Total Weight	t	1.67	1.96	2.19	2.63	3.02	3.49	4.39	5.76
Max. Wheel Load	kN	8.9	9.8	10.5	11.7	12.7	13.9	16.2	19.6
Min. Wheel Load	kN	3.9	4.6	5.2	6.3	7.2	8.4	10.6	14.1
Main dimensions	mm	7.5	10.5	13.5	16.5	19.2	22.5	25.5	28.5
Wheel tread to Main Girder Top	H1	490	490	490	490	530	580	660	745
Wheel tread to Hook Centre	H2	910	910	910	955	970	970	990	1010
Main Girder Height	H3	550	550	550	595	650	700	800	900
End Truck Wheels' Distance	W	2000	2000	2000	2500	2500	3000	3500	4000
End Truck Length	B	2500	2500	2500	3000	3000	3500	4000	4500
Hook Left Limitation	C1	796
Hook Right Limitation	C2	1274

LB Explosion-proof Single-girder Overhead Crane with Electric Hoist - 2t

Span(S)	m	7.5	10.5	13.5	16.5	19.5	22.5	25.5	28.5
Lifting Speed (normal)	m/min	8 (0.8)
Trolley Speed	m/min	20
Crane Speed	m/min	20
Lifting Motor	kW	3 / 0.4
Trolley Motor	kW	0.4
Control		Ground control
Body Weight	t	1.79	2.07	2.45	2.85	3.49	4.47	5.75	6.89
Max. Wheel Load	kN	13.8	14.8	16.0	17.1	18.8	21.3	24.6	27.5
Min. Wheel Load	kN	4.1	4.7	5.6	6.6	8.2	10.7	13.8	16.7
Main dimensions	mm	7.5	10.5	13.5	16.5	19.2	22.5	25.5	28.5
Wheel Tread to Main Girder Top	H1	490	490	490	580	660	785	820	875
Wheel Tread to Hook Centre	H2	1080	1080	1125	1140	1160	1135	1200	1250
Main Girder Height	H3	550	550	595	700	800	900	1000	1100
End Truck Wheels' Distance	W	2000	2000	2000	2500	2500	3000	3500	4000
End Truck Length	B	2500	2500	2500	3000	3000	3500	4000	4500
Hook Left Limitation	C1	871
Hook Right Limitation	C2	1274

LB Explosion-proof Single-girder Overhead Crane with Electric Hoist - 3t

Span(S)	m	7.5	10.5	13.5	16.5	19.5	22.5	25.5	28.5
Lifting Speed (normal)	m/min	8 (0.8)
Trolley Speed	m/min	20
Crane Speed	m/min	20
Lifting Motor	kW	4.5 / 0.4
Trolley Motor	kW	0.4
Control		Ground control
Body Weight	t	1.93	2.25	2.64	3.27	4.14	5.36	6.17	8.59
Max. Wheel Load	kN	18.9	20.2	21.5	23.2	25.5	28.7	30.8	36.9
Min. Wheel Load	kN	4.2	4.9	5.9	7.4	9.6	12.6	14.6	20.7
Main dimensions	mm	7.5	10.5	13.5	16.5	19.2	22.5	25.5	28.5
Wheel Tread to Main Girder Top	H1	530	530	580	660	745	820	875	925
Wheel Tread to Hook Centre	H2	1255	1255	1255	1275	1290	1315	1360	1660
Main Girder Height	H3	650	650	700	800	900	1100	1100	1200
End Truck Wheels' Distance	W	2000	2000	2000	2500	2500	3000	2500	4000
End Truck Length	B	2500	2500	2500	3000	3000	3500	4000	1500
Hook Left Limitation	C1	820
Hook Right Limitation	C2	1290

LB Explosion-proof Single-girder Overhead Crane with Electric Hoist - 5t

Span(S)	m	7.5	10.5	13.5	16.5	19.5	22.5	25.5	28.5
Lifting Speed (normal)	m/min	8 (0.8)
Trolley Speed	m/min	20, 30
Crane Speed	m/min	20
Lifting Motor	kW	7.5 / 0.8
Trolley Motor	kW	0.8
Control		Ground control
Body Weight	t	2.2	2.59	3.2	3.83	4.76	5.7	7.67	9.72
Max. Wheel Load	kN	28.7	30.5	32.5	34.4	37.0	39.5	44.5	49.7
Min. Wheel Load	kN	4.6	5.5	6.9	8.5	10.8	13.1	18.0	23.2
Main dimensions	mm	7.5	10.5	13.5	16.5	19.2	22.5	25.5	28.5
Wheel Tread to Main Girder Top	H1	580	580	660	745	820	875	925	1015
Wheel Tread to Hook Centre	H2	1460	1460	1460	1540	1500	1545	1595	1670
Main Girder Height	H3	720	720	800	900	1000	1100	1200	1300
End Truck Wheels' Distance	W	2000	2000	2000	2500	2500	3000	3500	4000
End Truck Length	B	2500	2500	2500	3000	3000	3500	4000	4500
Hook Left Limitation	C1	840
Hook Right Limitation	C2	1310

LB Explosion-proof Single-girder Overhead Crane with Electric Hoist - 10t

Span(S)	m	7.5	10.5	13.5	16.5	19.5	22.5	25.5	28.5
Lifting Speed (normal)	m/min	7 (0.7)
Trolley Speed	m/min	20
Crane Speed	m/min	20
Lifting Motor	kW	13 / 1.5
Trolley Motor	kW	0.8
Control		Ground control
Body Weight	t	3.26	3.76	4.4	5.17	5.92	7.48	9.71	14.05
Max. Wheel Load	kN	51.3	55.3	58.4	61.3	63.9	68.2	74.2	85.4
Min. Wheel Load	kN	6.1	7.2	8.7	10.5	12.3	16.2	21.7	32.6
Main dimensions	mm	7.5	10.5	13.5	16.5	19.2	22.5	25.5	28.5
Wheel Tread to Main Girder Top	H1	720	720	820	875	875	925	1100	1200
Wheel Tread to Hook Centre	H2	1850	1850	1850	1900	1940	2000	1920	1920
Main Girder Height	H3	900	900	1000	1100	1140	1250	1350	1450
End Truck Wheels' Distance	W	2000	2000	2000	2500	2500	3000	3500	4000
End Truck Length	B	2500	2500	2500	3000	3000	3500	4000	4700
Hook Left Limitation	C1	1293
Hook Right Limitation	C2	1893

LB Explosion-proof Single-girder Overhead Crane with Electric Hoist - 16t

Span(S)	m	7.5	10.5	13.5	16.5	19.5	22.5	25.5	28.5
Lifting Speed (normal)	m/min	3.5 (0.35)
Trolley Speed	m/min	18
Crane Speed	m/min	20
Lifting Motor	kW	13 / 1.5
Trolley Motor	kW	0.8
Control		Ground control
Body Weight	t	3.64	4.24	4.97	6.43	7.75	9.34	13.43	15.42
Max. Wheel Load	kN	77.2	82.9	87.1	92.2	96.5	101.3	112.0	117.5
Min. Wheel Load	kN	7.0	8.3	10.0	13.6	16.8	20.8	31.0	35.9
Main dimensions	mm	7.5	10.5	13.5	16.5	19.2	22.5	25.5	28.5
Wheel Tread to Main Girder Top	H1	820	820	875	975	1075	1130	1280	1300
Wheel Tread to Hook Centre	H2	2480	2480	2525	2525	2525	2570	2570	2600
Main Girder Height	H3	1000	1000	1100	1200	1300	1400	1500	1600
End Truck Wheels' Distance	W	2000	2000	2000	2500	2500	3000	3500	4000
End Truck Length	B	2500	2500	2500	3000	3000	3500	4200	4700
Hook Left Limitation	C1	1293
Hook Right Limitation	C2	1893

LB Explosion-proof Single-girder Overhead Crane with Electric Hoist - 20t

Span(S)	m	7.5	10.5	13.5	16.5	19.5	22.5	25.5
Lifting Speed (normal)	m/min	4.2 (0.42)
Trolley Speed	m/min	14
Crane Speed	m/min	20
Lifting Motor	kW	18.5 / 2.2
Trolley Motor	kW	0.8
Control		Ground control
Body Weight	t	5.45	6.22	7.6	9.37	11.28	12.96	14.96
Max. Wheel Load	kN	97.9	105.7	112.3	118.8	125.0	130.5	135.6
Min. Wheel Load	kN	10.2	11.8	15.1	19.4	24.1	28.5	33.1
Main dimensions	mm	7.5	10.5	13.5	16.5	19.2	22.5	25.5
Wheel Tread to Main Girder Top	H1	900	900	970	1050	1130	1200	1300
Wheel Tread to Hook Centre	H2	2450	2450	2480	2530	2560	2600	2600
Main Girder Height	H3	1050	1050	1150	1280	1390	1500	1600
End Truck Wheels' Distance	W	2000	2000	2000	2500	2500	3000	3500
End Truck Length	B	2700	2700	2700	3200	3200	3700	4200
Hook Left Limitation	C1	1394
Hook Right Limitation	C2	1933

Prices for Explosion-proof Overhead Cranes of Different Tonnages:

• 1 Ton Explosion-Proof Overhead Crane Price(USD): $4,000 to $45,000
• 5 Ton Explosion-Proof Overhead Crane Price(USD): $5,000 to $50,000
• 10 Ton Explosion-Proof Overhead Crane Price(USD): $6,000 to $50,000
• 15 Ton Explosion-Proof Overhead Crane Price(USD): $6,000 - $50,000
• 20 ton Explosion-Proof Overhead Crane Price(USD):  $7,000 - $60,000
• 25 ton Explosion-Proof Overhead Crane Price(USD): $9,000 to $90,000
• 30 Ton Explosion-Proof Overhead Crane Price(USD): $13,000 - $80,000
• 50 Ton Explosion-Proof Overhead Crane Price(USD): $13,000 - $150,000

Metal structure of Explosion-proof Single Girder Overhead Crane:

1. Main girder is welded by high quality I-beam and one time molding,stamping U-slots, or welded by steel plate of box beam.
2. Steel quality is Q235B or Q345B(international Fe37 or Fe52).
3. The end truck is welded by rectangular tube or high quality steel plate.
4. The main girder and end truck is connected by hanging panel or half sit half hanging bolts, easy to transport.
5. There are holes left for installation on the main girder, easy to assemble. 
6. On each end of the main girder equipped with Polyurethane buffer, to ensure the safe traveling of hoists.

Explosion-proof Electric Wire Rope Hoist of Explosion-proof Single Girder Overhead Crane:

Mainly composed of lifting, traveling mechanism and electrical parts.

Lifting mechanism

Mainly composed of lifting motor,reducer,drum,coupling, wire rope, hook etc.

Lifting motor

1. Adapts whole sealing tapered rotor asynchronous motor, special made from explosion-proof motor series, when cutting of the motor, make the explosion-proof hoist stop in short time.
2. The peak torque is 2-3 times of full-load torque, safe and reliable.
3. Insulation class is B or F, motor protection class is  IP44/IP54.
4. The shell of explosion-proof adopts cast iron HT200, after processing, to do one minute 1×105pa hydrostatic test, ensure safety.

Reducer

1. Adopts standard modulus of cylindrical gears, convenient in maintenance, installed with antifriction bearing.
2. Gear and gear shaft are made up of heat treating alloy steel, with high strength.
3. The shell is high quality cast iron, assembly close, the dust can't enter easily.
4. Be composed of box cover, the primary shaft, the second shaft, the third shaft and box, reducer is one component, assembly and disassembly very convenient.
5. Reliable drive and high efficiency.
6. Box , box cover, axle hole, connection hole are automatically processed, accurately positioning, high precision, reduce the noise of traveling and prevent oil leakage.

Drum

1. Drum is made of cast iron or seamless steel tube, inside the steel shell.
2. It is connected with reducer by flat key and spline, the other end is in the front of motor.
3. The wire rope is winded according to the thread groove on the drum, also with rope guide, and adjust  limit switch through the block piece, ensure the hook to the limit position to cut off the power.
4. There is pressure plate in the end of the wire rope, and fixed on the drum through bolts, changing the wire rope, just remove the rope guide, don't need to remove the shell, easy maintenance.

Coupling

1. The motor torque is transmitted through this elastic coupling.
2. The coupling can absorb impact load, ensure stable starting.

Wire rope

1. Wire rope is the main parts of electric hoist in lifting mechanism, it influences the safely using directly, usually scrapped because of abrading, rupture,so it should be always in good lubrication state, and check the fixed situation of the end part regularly.
2. The wire rope should be scrapped when the condition is accord with the provision in GB5972, and change new rope.

Hook device

1. The hook is forging by high quality carbon steel, hanging on the pressure ball bearing, and connecting with the shell by cross,make the hook moving freely.
2. The end of hook adopts card board structure.
3. When the explosion-proof is dIICT4, the head of hook adopts stainless steel.

Traveling mechanism

Mainly composed of electric trolley,operating motor.

Electric trolley

1. Traveling mechanism uses electric trolley, the gear of reducer is forging by high quality steel, and adopts heat process, using rolling bearings; when the lifting height is very high, traveling mechanism and lifting mechanism use ball joints connection, ensure flexible moving, turning radius is small, long-life service.
2. The traveling speed is usually 20m/min, also can choose 30m/min.lifting height h≥12m, lifting capacity is 1t-5t, increasing a driven trolley.
3. Trolley adopts two wheel drive, and positioned on the both sides of crane, Can provide uniform efficient traction.

Operating motor

1. Adopts BZDY series explosion-proof tapered rotor three-phase asynchronous motor, the braking part is plane brake, brake moment is small, braking process is slow, avoid swing of lifting objects when stopped
2. The working system of motor is S4, basic loading rate is 25%, 120 times starts per hour.

Crane traveling of Explosion-proof Single Girder Overhead Crane:

1. Adopts separate driving, moving on the rails on both sides of span, install one driving wheel and one driven wheel, every driving wheel has one set of driving devices.
2. Driving device is made up of tapered rotor motor, reducer, explosion-proof wheels, also can adopts trinity drive, adjustment is simple and quick.
3. Compact structure, good-looking, small size, light weight.
4. Traveling stably, braking effectively, long-life service.

Electrical parts of Explosion-proof Single Girder Overhead Crane:

1. The conductor of crane is cable.
2. Lifting and crane traveling can be controlled separately or working at the same time.
3. Composed of galvanized slide rail and cable pulley, sliding stably.
4. The electrical appliance adjusts speed without contact or spark module.
5. Traveling, lifting, starts are very stable.
6. The layout of control box is reasonable, easy maintenance.

Protection

1. Outside cranes equipped with lifting mechanism, control box and rainproof for driving mechanism.
2. Equipped with overload alarm, prevent the hook clashing the top.
3. Install buffer block for crane.
4. With sound and light alarm devices.
5. Other protections: Under-voltage protection、ground fault protection,short-circuit protection、over-heating protection、overload protection、position limit protection、over-current protection、power-off protection etc.

Control ways

1. Ground control and cabin contro
2. The cabin has open style and closed style, can fixed on left or right.
3. The open direction include end open, side open and top open.
4. With special cabin used for single girder and capsule cabin.
5. Ground control includes hand shank operation and remote control operation, don't need driver.
6. Electrical control box, controlling button, position limiter are all explosion-proof, ensure safety.

Application of Explosion-proof Single Girder Overhead Crane:

1. Hazardous Zone Safety: The Explosion-proof single girder overhead crane is designed specifically for explosive environments. It ensures safe lifting operations where flammable gases or dust are present.
2. Petrochemical and Gas Industry: In oil refineries, gas processing facilities, and chemical plants, the Explosion-proof single girder overhead crane is essential for handling heavy equipment and materials without causing ignition.
3. Paint and Coating Workshops: The Explosion-proof single girder overhead crane is commonly used in painting areas where volatile chemicals create flammable atmospheres.
4. Ammunition and Military Facilities: For lifting explosives and weapon components, the Explosion-proof single girder overhead crane provides secure and compliant material handling.
5. Grain and Food Processing Plants: Dust from grain handling can be explosive; the Explosion-proof single girder overhead crane is ideal for such environments.
6. Marine and Offshore Platforms: The Explosion-proof single girder overhead crane is widely used on ships and oil platforms where both gas and space constraints exist.