Navi Mumbai, Maharashtra, India
Our Products
Aditya make Single Girder cranes are modular in construction and are available in two verities Electric Overhead Travelling (EOT) and Under slung type.
The cranes are of modular design using standard wire rope hoist. Compact and light weight design ensures lower building space, most optimum utilization of floor space and lower building loads
Special Features of Modular Cranes :
The EOT Crane moves over the rails placed on the top of crane runway or Gantry Girders. The crane mainly comprise of bridge girder made from rolled sections such as I beams/ U beams or fabricated box section. The bridge girder is supported on two end carriages, each housing a pair of wheels. The wheels are driven by motor gearbox units. A wire rope hoist is suspended below the bridge girder. The crane can be operated through pendent station hanging from wire rope hoist or through radio remote control. The pendent station can be made to move independent of hoist movement as per customers choice.
The wire rope hoist comprise of rope drum made from seamless tube. Grooves are machined on rope drum for proper support to the wire rope. Cast Iron rope band and guide prevents wire rope jumping from grooves. The hoisting drive arrangement comprises of motor coupled to an oil lubricated, spur/helical gearbox that in turn provides the motion to the rope drum. An electromagnetic fail safe brake prevents accidental lowering of load in the event of power failure. Limit switch is provided to prevent over hoisting of hook block. Additional limit switch can also be provided to prevent over lowering of hook block.
The cross movement of hoist is achieved through the movement of wheels supported on the beam/ box flange. The drive to the wheels is provided through an electric motor-gearbox unit. Fail safe brake and limit switch are provided as additional features is so desired by customer.
Power supply to the wire rope hoist is through festoon cable system. The flexible cables are supported by cable hanger or cable trolleys that move on either taught wire or enclosed C track depending on customer choice.
The Under slung single girder crane is very similar to overhead travelling crane except for the fact that the end carriages are hung below the gantry girders made of I section.
The single girder cranes find their application mainly for capacities up to 20 MT and Span up to 25 Meters. These are commonly used for light and medium workshop duty applications. However, in rare cases the single girder cranes are also used for hot metal ladle handling as well as with grab bucket.
Double girder cranes are rugged in construction and find their use in a wide range of hoisting capacities and applications. The promoters of Aditya Cranes have experience of designing cranes up to 500 MT capacity.
Double girder EOT crane find their application in power plant, workshop duty, transformer industry, cable industry, process plants, steel plants, coal fields, cement plants, engineering industry to just name a few.
Heavy duty barrel winch type of double girder cranes are designed and manufactured to customers precise needs.
Special Features of Barrel Winch Cranes :
In case of double girder crane, the trolley housing hoisting and cross traversing machinery move on the top of two bridge girders. The bridge girders are of box construction made from rolled plates. However for smaller capacities and spans, the bridge girders are also made from standard rolled sections.
For standard workshop duty crane the hoisting unit is comprised of compact wire rope hoist unit. While in case of heavy duty or higher capacity cranes, the hoisting unit is made from fabricated and machined rope drum housing left hand and right hand grooves to achieve true vertical lift. The rope drum is connected to total enclosed helical gearbox through flexible drum coupling. The gearbox is driven by electric motor either sq. cage induction type or slip ring type. Fail safe hydraulically operated thrustor brake or DC brake is provided on input shaft of gearbox to prevent accidental lowering of load in the event of power failure.
For special steel mill ladle handling application, the wire rope arrangement can be supplied with four rope independent suspension to prevent falling of load in case of failure of one wire rope. The hoisting gearbox can be supplied with integral planetary arrangement and two hoisting motors for achieve hoisting motion at 50% of full speed in case of failure of one hoisting motor. Planetary gearbox can also be supplied for operating 4 rope grab bucket to achieve hoisting as well as grab opening/ closing operations.
Special features for hoisting arrangement include motorised hook rotation, two hook blocks suspended from hoist drum supporting lifting beam, special anti sway rope arrangement for rotating lifting beams, magnets suspended from hook block/ lifting beam, tong suspended from rope system, grab bucket suspended from wire rope system or hook type grab, hot metal handling crane with motorised hook rotation, fixed mast crane to prevent load sway during acceleration and deceleration.
In addition to Main Hoist (MH) an Auxiliary Hoist (AH) can also be provided on the same trolley. On customers request, two or three trolleys can be operated on the same pair of bridge girders for special application with a facility for load summation.
The cross travel machinery comprises of motor gearbox and brake unit coupled to wheel assemblies with live axles. The spherical roller bearings housed in L type of bearing housing are provided for heavy duty application.
The bridge girders are made of plate box construction of ample strength and rigidity. Full depth vertical diaphragms are provided inside the box for stability. Short diaphragms are provided in between full depth diaphragms to support the rail section that support the trolley. Horizontal diaphragms are provided as needed to prevent buckling of web plates.
For special applications wide box girder design is provided as per customers requirement. In this case the electrical panels are housed inside the box girder to protect the electrical and electronic components from metallic dust as well as heat. As an alternative to wide box girder design, a completely enclosed electrical house supported on crane platform can be provided.
Full length walkway platforms are provided along the LT drive side girders for heavy and extra heavy duty cranes. Platform/ Walkways are provided on all other cranes as per customers specifications.
Power is supplied to trolley through flexible festoon cable system. For lower capacity and light duty cranes, compact festoon cable system or drag chain system is used for trolley power supply. For higher capacity/ heavy duty cranes beam rider trolleys moving on heavy duty I beams supply power to machinery installed on the trolley.
The girders are supported at ends by rigid end carriages that house long travel wheels. The arrangement of end carriage is decided by application as well as number of long travel wheels that support the load. Crane capacity, runway rail size, duty classification of crane, LT speed are some of the factors that affect the sizing of LT wheels.
Depending on design requirement cranes with 4, 8, 12, 16 and longer travel wheels are provided for crane LT drive. The drive unit comprises of motor, gearbox and brake unit. Hollow output shaft gearbox that is installed directly on wheel axle is provided for light and medium duty crane. For heavy and extra heavy duty cranes the long travel gearbox, motor unit is mounted on a separate LT machinery platform and the gearbox is connected to Long travel wheel through a pair of half geared coupling and floating shaft.
In case of heavy duty cranes, the hoist, CT and LT gearboxes are made from MS fabricated steel duty stress relieved before machining. The helical gears are machined hob cut and are housed in precision machined housings. Gears are dipped in oil bath and are splash lubricated.
The motor speed and torque can be controlled through variable frequency variable voltage drives commonly known as VVVF or VFD drives as per customers requirement. Slip ring motors with resistance control is also employed as per the buyers choice.
The goliath crane move on rails supported on floor level instead of rails placed at elevated level as in case of EOT Cranes. This eliminates the need for workshop building and hence reduction in capital cost. Goliath crane find major application in outdoors. However, the goliath cranes can also be installed inside a closed building.
Special protection is provided for outdoor duty cranes depending on application and agreement with buyer. These special features may include corrosion allowance in design of main load bearing structural members, drilled holes on walkway to avoid accumulation of rain water, localized full cover for trolley, covers for Long travel motor/ brake, additional parking brake for Long travel motion, special paint etc
Outdoor duty goliath cranes are also checked for stability under storm condition. Special storm anchors are provided to prevent toppling of crane under storm condition.
The cross travel and long travel motor gearbox unit is designed to overcome wind resistance opposing the crane movement in addition to the power required to accelerate and move the safe working load at full speed.
Power supply to the crane is provided through DG Set, Cable Reeling drum or shrouded bus bar.
Aditya make Pillar mounted (Free Standing) Jib Cranes are best suited for work station application. These cranes are directly installed on shop floor without any need for support from building column. Available in capacity ranging from 0.5 MT to 5 MT and outreach of 8 meters, these cranes serve the need of local station without use of shop EOT Crane.
The post is made from pipe of ample strength. The jib swivels on antifriction bearings. The slewing motion is available in both manual as well as motorised variety. The jib construction is available in under braced as well as over braced options.
Wide base plate is provided at the bottom of the jib to distribute loads on foundation evenly. Hoisting unit is available in three varieties manual chain hoist with push pull or geared trolley, electrical chain hoist with push pull / geared or motorised trolley movement and electric wire rope hoist with motorised CT movement. VVVF drive is available for hoisting, CT and Slewing motion for smooth start and stop and Radio remote control are available for remote operation of the crane.
Aditya make Wall or Column mounted Jib Cranes are best suited for work station application. These cranes are mounted or building column made from steel. Special design is also available for mounted the Jib crane on RCC columns. Available in capacity ranging from 0.5 MT to 10 MT and outreach of 10 meters, these cranes serve the need of local station without use of shop EOT Crane.
The Jib is made from rolled beams. In over braced construction, tie members are provided to achieve optimum weight of the jib. For smaller capacities are outreach, the jib is also available in under braced construction. Articulated Jib arm is also available to meet special needs of workshop. The slewing motion is available in both manual as well as motorised variety.
Hoisting unit is available in three varieties manual chain hoist with push pulled or geared trolley, electrical chain hoist with push pull/ geared or motorised trolley movement and electric wire rope hoist with motorised CT movement. VVVF drive is available for hoisting, CT and Slewing motion for smooth start and stop and Radio remote control are available for remote operation of the crane.
Special Features :
Lightweight portable gantries are available to meet needs of warehouse and small workshops. These cranes can be easily dismantled and transported to another location in a truck.
The portable gantry crane is provided with solid rubber or rubber tyred caster wheels that move on warehouse floor. The gantry can be easily pushed manually at desired location. The portable gantry crane is available in capacities ranging from 125 kgs to 2, 000 kgs with a span up to 5 meters. These cranes are best suitable for light duty application and are much more economical than permanent shop cranes.
Special Features :
