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Single Girder Eot Cranes
The single girder overhead crane is designed according to GB3811-2008 and JB/T1306-2008 standards, and it is equipped with electric hoists. It is widely used in mechanical processing, assembly, repair, warehouses, and other workplaces. It is an important tool and equipment for modern industrial enterprises to realize the mechanization and automation of the production process, reduce heavy manual labor, and improve labor productivity.
- Capacity: 1-20ton
- Span length: 4-31.5m
- Work duty: A3, A4
- Raged voltage: 220V~690V, 50-60Hz, 3ph AC
- Work environment temperature: -25℃～+40℃, relative humidity ≤85%
- Crane control mode: Floor control / Remote control / Cabin room
- Reference Price Range: $750-4500/set
Overview
Electric single beam overhead crane is designed according to GB3811-2008 and JB/T1306-2008 standards. It is a workshop lifting equipment used with electric hoists of CD1, MD1, WH164, electric chain hoist as the lifting mechanism. It is widely used in mechanical processing, assembly, repair, warehouses and other workplaces. It is an important tool and equipment for modern industrial enterprises to realize the mechanization and automation of the production process, reduce heavy manual labor, and improve labor productivity. Main components has bridge frame, electric hoist, electric control system.
The crane power supply is three-phase AC, and the rated frequency is 50Hz or 60Hz. The rated voltage is 220V～660V.
The operating mechanism of the crane adopts separate driving mode, and the driving and braking are completed by the cone rotor/soft start motor, and the transmission adopts “one opening and two closing” gear transmission.
The operation mode of the crane can be selected as ground operation, remote control operation and cab operation according to the specific situation.
Advantages
- Compact structure and good rigidity
- Easy to operate
- Low noise
- Safe and reliable
- Beautiful appearance
- ross girder: welded box girder construction, high strength
- End truck: welded box girder construction, torsionally rigid
- Travel wheels: Surface hardened steel wheels, highly wear-resistant
- Connections between the cross girder and end trucks – manufactured to precise machined tolerances for minimum wear
- Optional hoist: Electric wire rope hoist Or Low headroom hoist for a higher lifting height
- Power supply via Safety sliding contact line
- Control pendant suspended for separate travel on the crane girder
- Optional: radio remote control
- Coating: customization. Usually Paint finish in golden yellow. Travel drives in azure blue.
Introduction
Single girder eot cranes consist single bridge beam, two rails, end trucks, two runway beams and a hoist to lift the load that runs on the bridge beam. The end trucks run on the rails which are fixed on the runway beams. It is one of the most cost effective equipment for the medium and heavy loads. Single girder eot cranes offer the greatest flexibility for the cover area and the movement control. As is installing on the upper part of the factory, a single girder eot crane occupies the least floor space and meets the fewest number of obstacles in the range of the movement. After so many years’ endeavor, our company has successfully get into the top-ranking single girder eot cranes manufacturer. Single girder eot crane can be modified to adapt the changing demands. The operation of this kind equipment is quite flexible. It also rather easy be tailored depend on the unique conditions of your plant and the variety of the productions and loads.
Advantages of eot crane from DGCRANE
Our company’s single girder eot cranes are designed to meet a variety of different needs. They can offer excellent performance at the most cost effective without any compromise. With our advanced technology, our productions can transport the raw material to the precise position through gentle movement. To reduce the weight of the single girder eot crane itself, we adopt compact design to minimize the unnecessary weight. That means the higher efficiency to the crane and lower cost to you. Our single girder eot cranes will run better and run longer with very minimal service!
What should pay attention to?
- To ensure the safety of the equipment and operator, during the period of using, the instructions along with the productions should be observed.
- Make sure the load that will be lifted is in crane’s safe load range. Never exceed the prescriptive maximum load capacity.
- Move the load gently and smoothly. Sharp, jerky movement should be avoided. When an emergency appears, the operator could have time to deal with it.
- Before the start of the movement, the space in the range of the movement should be clear. No person and no obstruction are allowed.
- Horizontal movement must also begin slowly to prevent the load from swinging or coming into contact with other obstacles.
- The single girder eot cranes should always be closely supervised during the working time. Do not leave the crane alone without attended.
- After a period of working, the crane and its components should be inspected. The time interval between the inspections depends on the practical usage.
Options and Components
Main girder is the main bearing part of the crane, its structure is made of U-shaped groove, inclined cover plate, rib plate and I beam steel plate, its upper arc is ((1/1000～1.4/1000)S, when the rated lifting weight and the hoist’s self-weight are located in the middle of the span, the degree of camber caused is not lower than the horizontal line, and there is no permanent deformation during normal operation.
End girder is located at both ends of the main beam, is bolted to the main beam by flange plats. It's box structure, composed of U-shaped groove, lower cover plate, reinforcement plate, and rib plates formed by steel plate rolling or welded steel plates. The end girder has the characteristics of light structure, good rigidity, beautiful appearance and good welding performance.
Electric hoist is to be used on single girder overhead crane, each electric hoist will perform dynamic and static load test, rise and drop pressure tests. The baking paint process is adopted to enhance the adhesion of the paint film and improve the appearance quality. Assembly line ensures product quality.
The box and cover of the driving device are cast from HT200 gray iron with good vibration resistance. After aging treatment, they are processed and manufactured on the lathe by special clamps. The gear and gear shaft are forged by 40Cr die forging, and are made by turning, hobbing, tempering and grinding. The hardness of heat treatment is HB235-269.
The crane motor adopts ZDY(D) series cone rotor brake motor or soft starter motor. The standard motor insulation class is B and the protection class is IP44. The motor has the characteristics of good heat dissipation, long service life, safety and reliability. Special working conditions can be customized.
The wheel set is formed by die forging of 45# steel, processed by rough machining, quenching, tempering, and finishing. The heat treatment hardness is HB300～380, and the hardness is not less than HB260 at 15mm depth of hardened layer. The wheel axle is made of 45# steel, which is processed by rough machining, quenching and tempering, and fine machining. The heat treatment hardness is 235～269HB.
The hook blocks meet the standard GB/T1005.1～5-98, its material is DG20, safety factor is greater than 5; Hook surface is smooth and has no defects such as cracks, folding, overburning etc.; there are no internal cracks, white spots and other effects that affect the safety. The hook is equipped with an anti-decoupling device to prevent the wire rope from decoupling to ensure the hook safety and reliability during use.
JHQ-C series polyurethane buffer has super anti-collision ability and good buffering effect. Simple structure, long service life, convenient installation and maintenance.
Our standard power supply is three phase, 380V (±10%, the lower limit of peak current is -15%), 50Hz. According to customer requirements, the power supply can be designed as a three-phase electrical control system under 690V and frequency 50-60HZ.
Pendant panel, Remote control, Cabin control. The crane can also be equipped with two sets of operating devices, namely: ground + remote control or driver’s cab + remote control. However, due to safety issues, the two operating modes can only be switched and cannot be used at the same time. The control circuit voltage is generally AC 36V safe voltage.
A Standard Single Girder Overhead Crane Will Be Produced in 20 Days.
Incoming Material Sample Test
Steel plate uncoiling and falttening
Steel sheeting cuttig
Rolling groove
Welding stiffener
Welding I beam and cover plate
Crane pre assembling
Crane painting
Crane packing and delivery
Tips:
Lead time of cranes with different voltage may be 10-15 days longer as electrical components need to be customized by our supplier.Types of Cranes for Different Working Conditions
LDA(common single girder overhead crane)
- The main girderand the end carriages are connected by bolts, which are convenient for dis-assembly, transportation and storage.
- Automatic welding and assembly line processing, quick to install, and easy maintenance.
- Reasonable structure, strong rigidity and durability.
LDC (low headroom single girder overhead crane)
- The main beam and the end carriages are connected by bolts, which are convenient for dis-assembly, transportation and storage.
- Automatic welding and assembly line processing, quick to install, and easy maintenance.
- Low-headroom design, compared to normal type single girder overhead crane, the LDC type single girder overhead crane can have higher lifting height, and it is more space-saving.
LDP (partial hanging single girder overhead crane)
- The main girder and the end carriages are connected by bolts, which are convenient for dis-assembly, transportation and storage.
- Automatic welding and assembly line processing, quick to install, and easy maintenance.
- The hoist is on one side of the beam, it can achieve higher lifting height compares to normal type single beam crane and low headroom single beam overhead crane
LB (explosion-proof single girder overhead crane)
- Compact structure, good rigidity, sensitive operation.
- Safe and reliable, beautiful appearance, strong explosion-proof, etc.
- The main components of our explosion-proof single girder overhead crane overhead crane are: bridge frame, explosion-proof electric hoist, electric control system
LDY(Metallurgical electric single beam overhead crane)
- The LDY(Metallurgical electric single beam overhead crane) crane is with A6 working class, suitable for working environment temperature≤60℃, relative humidity≤85﹪, altitude below 2000m, no corrosive medium environment conditions.
- The structure of the crane is mainly composed of three parts: bridge frame, metallurgical electric hoist and electrical system.
- Use heat insulation protection measures outside electrical equipment such as motors and electric control system.
LDZ Electric grab single girder overhead crane
- The electric grab single girder overhead crane is a workshop lifting equipment used with grab trolleys. It is widely used in various workplaces such as machining, assembly, repair, and warehouses.
- The operating mechanism of the crane adopts separate driving mode, and the driving and braking are completed by the conical rotor motor, and the transmission adopts “one opening and two closing” gear transmission.
- The product has the advantages of compact structure, good rigidity, easy operation, low noise, safety and reliability, and beautiful appearance.
On-Site Installation or Remote Instruction Is Available
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