Eddycranes Engineers Private Limited

ELMECH double girder cranes are classified as class I, II, III & IV. These cranes are available in capacities ranging from 1 ton to 100 tons.

STRUCTURAL ASSEMBLY:

This basically comprises of two bridges girder fixed on two end carriages carried on forged steel wheels. In case of gantry cranes the two bridge girders are fixed on top of four gantry legs which in turn are carried on two under carriage provided with forged steel wheels.

 

The bridge girders are fabricated from high quality steel plates forming a rectangular box section. Stiffening diaphragms are filled at regular intervals for the design to confirm to IS-807 and IS-800. The girders are so built that they have the required camber in the unloaded as required under Indian standard specifications.

 

The Internal surface is adequately sealed from the atmosphere by welding thus preventing internal corrosion.

 

The structure of the crane is made heavier to take into account wind pressure when the crane is moving against it, as also the long travel machinery in general is made heavier.

 

The ELMECH cranes are fully assembled and tested to our workshop before dispatch as per ISS-3177. In the testing, all the motions are tried out in our works at load conditions. Cranes up to tones capacity only can be tested at our works at Pune, for full load and overload as per IS: 3177 prior to dispatch.

 

Features:

• High quality.
  
• Minimum maintenance.
  
• Aesthetic Appearance.

ELMECH cranes are designed keeping in mind Indian Standard Specification applicable to the crane. Code of practice for design manufacture, erection and testing (structural position) of cranes and hoists. The structure of the crane is made heavier to take into account wind pressure when the crane is moving against it, as also the long travel machinery in general is made heavier.

Structure:

The JIB crane will be fabricated from tested quality steel section with all welded construction. The structure will be designed as per ISS: 807-1976, for cranes. The complete JIB will be carried on ball / roller thrust bearing in the top and bottom brackets to be fitted on the column to be provided by us / column to be provided by you. In case column is to be provided by us then the column will be fabricated from mild steel pipe. Suitable stiffeners will be provided on the column. A base plate of ample design will also be provided.

 

Controlling Equipment:

This will consists of push button controller hanging by means of rubber cable to be operated from floor level.

 

The push button will operate the motor through contactors so as to have controlling voltage at push buttons at 110 volts. This is for the safely of the operator.

 

The protective equipment will consist of overload relays, contractors and step down transformer for control voltage included in the scope of our supply.

 

Wiring:

For the collection of current to trolley, we will include a flexible rubber cable supported by means of loops attached to a stretched wire.

 

We shall provide all wiring between individual motors, controllers and current collectors. The wiring will be with PVC cables. For collation of current to the crane, we shall provide enough cable length to collect the current from the junction box. However, junction box will have to be provided by the buyer.

 

Test Load: 

The crane will be tested at 25% overload. This test has to be performed after erection at site and it will be the responsibility of the buyer to make all the necessary arrangements and incur expenses relating to this test.

 

Painting:

All parts of the structure will be thoroughly scraped, cleaned and one cost of red lead paint will be applied before the crane leaves our works. All parts of machinery will be finished with yellow enamel paint.

 

Installation and Operation Instructions:

With each crane, we will supply two copies of installation and operation instructions containing full instructions for assembly, erection, proper operation and maintenance of the crane. This will also contain list of the parts to enable the buyer ordering spares.

 

Manual Operated JIB Crane:

In case of manually operated JIB crane manual hoist with hand geared trolley will be provided operating through endless chain.

GENERAL DESIGN:
The “ELMECH” crane will be designed in accordance with IS: 807-1976 code of practice for design manufacture, erection and testing (Structural position) of cranes and hoists and IS: 3177-1999 code of practice for design of overhead travelling cranes.

In the design of components adequate factor of safety, as per relevant codes, shall be allowed. Impact fatigue, wear and stress concentration factors shall be taken into account whenever applicable.

STEEL:
Tested quality steel or equivalent will be used in the manufacture of the main load bearing members of the crane structure. The crane bridge will be “ELMECH” mono girder type and shall be suitable stiffened, if desire, by an auxiliary girder to be proved on one side of main girder.

The end carriage will be fabricated from suitable rolled steel section provided with dipharm members and will be connected to the girders to prevent cross bending. The end carriages will be provided with double flanged forged wheels running on anti-friction bearing. For easy assembly / erection at site all parts of structure will be given match makings.

CONTROLLING EQUIPMENT:
The crane shall be controlled from floor through pendant push button station hanging from (Hoist). The push button will operate the motors through contractors so as to have the controlling voltage at the push button at 110volts. This is for safety of the operator. The crane shall be equipped with protective control panel consisting of contractors, overload relays, fuses transformers, etc.

TEST LOAD:
The crane will be tested at 25% overload. This test has to be performed after erection at site, if erection contract is awarded to us, and it will be responsibility of the purchaser to make all the necessary arrangement and incur expenses relating to this test.

PAINTING:
The crane will be painted with one coat of red oxide primer and one cost of enamel paint at our works before dispatch.

OPERATION INSTALLATION INTRUCTION:
With each crane, two copies of installation and operation instruction containing full instruction for assembly, erection and maintenance of the crane are supplied this also contain the list of the parts to enable ordering out spares.