Saturday, October 31, 2020

Spotlight-Everest Engineering Equipment

Brain gain

When it comes to man and material handling equipment the importance of control technology cannot be understated. P V RAMDEV, MD, EVEREST ENGINEERING EQUIPMENT PVT LTD offers his expert assessment

 

Reliable control technology is extremely important for tower cranes and passenger hoists because of concerns such as great heights, accessibility to many areas of the construction site and project dependency. As far as tower cranes are concerned most of the buyers are aware of PLC & VFD controls and make specific demands for it.

 

 

PLC CONTROLS

 

PLC controls are excellent for accurate operation without any failure. PLC input/ output indicators are an additional benefit for easy and quick identification of faults whereas the VFD (Variable Frequency Drive) is mainly used for smooth start and stop functions as well as saving of about 35 per cent power consumption.

 

However there are two very important practical difficulties with VFD mechanisms.

 

 

VFD

 

If the VFD is used for hoisting mechanism, then a feedback encoder must be used to avoid free fall of load. Unfortunately many manufacturers are unaware of the requirement of a feedback encoder. Some time the hook falls freely resulting in fatal accidents. Very often due to various reasons like non availability of power from VFD – motor burning, open cable connection or cable cut – the hoist motor does not rotate, brake has open and the hanging load will fall freely without any chance to control it. But the encoder stops the free fall through closing the brake suddenly if the motor feedback not come to the VFD.

 

Similarly if the VFD is used for the slewing (rotating the tower crane) mechanism, then the rotation and control of tower crane will be very difficult during monsoon / heavy wind conditions. If the operator needs to rotate against this heavy wind, then VFD mechanism won’t be powerful enough to rotate the crane. This has led to suspension of tower crane operations during heavy wind conditions at many coastal site locations in places like Mumbai or Chennai. In such cases the use of Regulated Control Voltage/ Rotation Controlled by Voltage (RCV) mechanism is strongly recommended for slewing operation.

 

An RCV mechanism is very powerful during heavy winds as well as smooth start and stop operations. Also the operator is able to achieve better control.

 

PASSENGER HOIST

 

As far as the Passenger Hoist is concerned the best control technology is the VFD mechanism. Since it handles people to vertical heights it is very important that a VFD control achieves a very smooth start/stop operation as well as saving of power up to 35 per cent.

 

Safety systems are a vital part of passenger hoists from the point of view of reliability and durability. If the site in charge – or even the machinery in charge — physically checks the functioning of safety switches in a passenger hoist, there is a chance that he will see some of the safety switches being bypassed and running in danger. This can happen due to pressures like project schedule, frequent failure of parts, improper knowledge of safety requirements etc. It is therefore recommended that a safety check is conducted along with the weekly scheduled maintenance. Most of the site management, operations and safety department people are not aware of the safety checks and replacement schedule of parts. While looking at the cost of the equipment, the purchaser should also be aware of the proven durability and reliability of the equipment along with details of parts and mechanisms used. It has been noticed that many passenger hoists run under heavy vibrations even with VFD controls. It must therefore be stated that the smooth running not only depends on VFD but also on the quality of rack, pinions, alignment and the accuracy of structural manufacturing.

 

 

Peak of perfection

 

Everest has been at the forefront of providing the best in line products and solutions to the materials handling sector.

 

With over a quarter of a century of service to the construction sector, the Navi Mumbai based Everest Engineering Equipment Pvt Ltd today stands as a prominent service provider of tower cranes, passenger hoist and mast climbers. The ISO 9000 certified firm offers products which are highly treasured for their durability, reliability and high performance level.  The company has been formed by qualified and experienced engineering professionals who operate out of offices at CBD Belapur. The service support personnel are factory trained to provide professional installation and service to the company’s customers across the country.

 

The key aim of EEE is to provide quality products, on time service support and spare parts to the fast growing infrastructure projects across India. It supplies quality and economical equipment like tower cranes, passenger hoists, spare parts, service and AMC support, up gradation of existing conventional machines with latest technology which offer value addition in terms of features which offer lower power consumption and safety and are more economical.

 

EEE has sales and service tie-up with the best brands of the industry like SYM, Fine Hope for tower cranes, GJJ for passenger hoists, material hoists and Chengdu Hi-tech for the state of art anti-collision devices which are used in tower cranes.

 

The equipment supplied by the company have been used in projects across India’s construction and infrastructure universe like dam projects, petrochemicals, cement and power plants, multi-storied buildings, shipyards and steel plants. The company’s prestigious customers includes L&T, Lodha Group, JMC, Shapoorji Pallonji, Lanco, Power Mech, Paharpur Cooling Tower Ltd., Unity Infra Projects, Al-faraa Infra Projects, IOTEP, BG Shirke and many others.

 

The company’s product support network offers the following services: 

  • Erection, dismantling, O&M and spare parts for Luffing/flat top/top kit tower cranes and passenger hoists.
  • Technical consultancy for proper selection of tower cranes and passenger hoist according to particular site conditions like scaffolding system, jumping sequence and capacity.
  • Provides location drawing, execution charts, method statement and risk analysis.
  • Training and maintenance
  • Anti-collision devices and SLI (Safe Load Indicator) for tower cranes which are used for protecting tower cranes and other building/HV lines/towers/ machineries at site by avoiding collision.

 

Already with its vast experience, professional skills and prompt services Everest has been able to achieve higher levels of growth pattern during the past two years. Apart from standard solutions to fit customer requirement, Everest experts can offer customer solutions like Tower Cranes for 200m and above heights. Passenger Hoists to fit inside the lift shaft, High Speed Passenger Hoists for 200M – 600m heights to suit the customers’ special and specific requirement.

 

Now keeping in mind the increasing government focus on infrastructure development the company is aiming for steady growth in its sales and support activities.

 

Clearly Everest is on a business high! 

 

For more details contact:

Email: service@everestengg.in

Website: www.everestengg.in




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