Electric Wire Rope Hoist
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Description:
We are the Electric Wire Rope Hoists Manufacturer, Supplier and Exporter who design unparalleled hoists. Our cranes come with flexible configuration which are made to suit the client requirements. We provide a range of hoists that are suitable for industrial and material handling uses. Our Electric Wire Rope Hoists can efficiently bear a weight of 1.0 tons – 20.0 tons. Ideally, our hoists come with a lifting range of 6.0 – 7.0 meters.
However, we also provide custom design solutions for higher lifting capacities. All our hoists strictly adhere to the IS-3938 code of practice for design, manufacturing, erection & testing. We also provide up gradation services for your existing hoists.
The Ensemble types of the Electric Wire Rope Hoists:
- ⇛ Standard Electric Wire Rope Hoist
- ⇛ Hook Suspension Electric Wire Rope Hoist
- ⇛ Flexible Trolley Electric Wire Rope Hoists
- ⇛ Electric Wire Rope Hoists with Flexible Trolley
- ⇛ Power travel trolley Electric Wire Rope Hoists
- ⇛ Push Pull Trolley Electric Wire Rope Hoists
- ⇛ External Trolley Electric Wire Rope Hoists
- ⇛ Hand Geared Trolley Electric Wire Rope Hoists
- ⇛ Custom Design Flame Proof Hoists
- ⇛ Curvature Hoist/ Flexible Hoist/ Boggie Trolley Hoist
Design Parts of the Electric Wire Rope Hoist
Rope Drum:
We design the Rope Drums using flawless pipes and further secure them with grooves to ensure that the wire seating of the rope is perfect.
Frame
To create the frames, we only use plates which are in accordance with the IS: 2062 standards, Gr A. The profile is duly finished and a boring machine is used to do the same.
Gears & Pinions
Our gear and pinions are of the Helical type and are made using steel alloys. The material is further hardened to ensure to staunch design. The teeth cutting of the gears and pinions is done only after heat treatment to ensure smooth functioning.
Bearings
The ball bearing used for the hoists are the heavy-duty ones and are used for all the rotating parts.
Motors
The motors used are of the S4 type and have a speed of 150 starts/ hour. It is 40% CDF and has a design of Squirrel Cage motors in accordance with the IS: 325 standards.
Rope guide
The rope guide is made using cast iron or mild steel. It is an easy to use and easy to dismantle part which guides the rope through the rope slides.
Hook
The hook is made using forged steel according to the IS: 3815 standards. If required, we can also provide hooks according to the IS: 15560 standards.
Brakes
The hoists and cross traverse are equipped with ACEM disc brakes.
Limit Switch
For over hoisting, we provide the normal switch with roller design or rotary geared or counter weight gravity type switch. While for the cross travel and long travel motion, we provide two-way lever type switch.
Trolley Adjustment
The trolley sizes are completely customizable according to client needs. We also provide the option of choosing a higher flange width.
Design
The cranes are designed in accordance with IS-807, IS-3177 code of practice for design, manufacturing, erection & testing of structural part of the crane & IS-3177 code of practice for design of overhead traveling crane. In the design of components adequate factor of safety, as per relevant code is allowed, impact, fatigue, wear & stresses concentration factors are taken wherever applicable.
Steel
Steel conforming to I.S. 2062 of or equivalent is used in the manufacturing of the main load bearing members..
Material & Workmanship
All material used in the crane are selected from quality material. Adequate factor of safety are used in the design of all parts subjected to stresses and shocks.
Motors
The main hoisting L.T. & C.T. are totally enclosed in dust proof construction either TEFC / TESC CLASS ‘F’ 40% CDF insulation of reputed make.
Gearboxes
All gear boxes used in the cranes are totally enclosed in dust proof construction. The gears run in all bath & hence, no external lubrication is required. Pinions are of EN-19 & gears are of EN-9 forged/rolled steel & are keyed to carbon steel shaft. Gears & pinions are all precision machined. The shaft rotate on antifriction type ball/roller bearings. Use of totally enclosed gear box though costlier but it is desirable in view of the increased transmission efficiency & longer gear life.
Brakes
E.H.T./E.M. type brakes are provided in the hoisting. L.T. & C.T. motion these are automatically released when the motor circuit is on & are applied when the motor circuit is off. This is features works as a positive safety device as the brakes automatically comes into operation when the power supply fails.
Bearings
All moving parts of the cranes are supported on antifriction type ball/roller bearings.
Couplings
Flexible/Universal/Geared coupling are provided between all gear boxes & motors.
Lubrications
The cranes is provided with necessary lubrication fittings to facilities maintenance.
Operation
The cranes are either floor operated or cabin operated as required by client for floor operated crane pendent. Push button station is suspended from one end of bridge at suitable height from the floor level with step down voltage of 110 V.
Power Supply
The crane is suitable for operation of 415 V + 6% volts, 3 Phase, 50 Cycles , A.C. Supply.
Crab Frame
The frame work is of all welded construction, fabricated from rolled steel section & plates. The hoist & cross travel mechanism mounted on this frame.
Hoist Machinery
Hoist mechanism consists of motor, brake, gear box, rope drum & bottom block.
Rope Drum
The drum is of mild steel fabricated construction having right & left hand spiral grooves machined to suit the hoisting ropes. The drum is of such that there is not more than one layer when rope is full wound also length of the drum is such that each lead of drum when hook is its lowest position & one spare grooves for each rope lead when the hook its highest position.
Wire Rope
Wire rope is of best plough steel, fiber core normally in 6x36 construction having tensile strength of 160/175kgs./sq.mm [1570 N/sq. mm]. The wire rope has a factor of safety in accordance with IS-3177 depending on the class of the duty of the crane. The make of wire rope will be Usha Martin.
Bottom Block
The hook is of single plain shank type conforming to I.S. 3815 & made of forged steel or equivalent supported on thrust bearings.
Rope Sheaves
Its are C.I. running on bearing, adequate guards are provided to prevent the rope from leaving the sheaves.
Limit Switches
Limit switches are provided of reputed make to prevent the rope the over lowering & hoisting.
Cross Travel Machinery
Cross travel machinery consists of motor totally enclosed dust proof gear box, brake etc.
Wheels
The wheel of the trolley & the end carriage shall be forged steel conforming to IS-2707Grill duly spin hardened to 300BHN material. Double flanged L type straight tread type fitted with antifriction bearings for ease of the maintenance.
Bridge Girders
The girders are of plate welded BOX type construction designed to sustain all stresses arising due to vertical lateral forces with impact to which they are subjected. The maximum deflection of the main girder is limited to 1/900th span of live load including the weight of the trolley.
Trolley Track
Suitable square steel section tracks are provided for travel of the trolley. These are welded on the girders.
End Stoppers for Cross Travel Trolley
Steel end stoppers are provided on either side of the bridge to limit the motion of the trolley.
Platform
M.S. chequered plate / anti skid platform shall be provided for full length of one side of the bridge girder ( If required by client ).
End Carriages
End carriages are fabricated from rolled steel section/plate with adeaclate diaphragms & stiffeners to give a rigid construction. The girders with gusset plates are set on the end carriages & joined with bolt in rimmed holes wooden / rubber buffers are provided on either side crane and carriages.
Long Travel Mechanism
The driving machinery for the long travel motion is either single motor drive or twine motor drive.
Twin Drive Motor Arrangement
In this case, independent driving units comprising of motor gear box, brake etc. are coupled together & are mounted at either end platform. We are using our helical gear box for L.T. drive arrangement.
Paintings
In this case, independent driving units comprising of motor gear box, brake etc. are coupled together & are mounted at either end platform. We are using our helical gear box for L.T. drive arrangement.
Specifications of Electric Wire Rope Hoist :
- ➔ The most ideal and safe working load for these hoists is 500 kg to 20,000 kg.
- ➔ The lift heights are customizable as per client requirements.
- ➔ The duty class and standards of the crane are in strict adherence to the IS: 3938.
- ➔ The hoist speed is defined according to the specified requirements of the clients.
- ➔There are two options available for crane control – Either using a pendant push button or using radio remote control.
- ➔ Our hoists come with a Squirrel Cage Induction Geared Motors drive system. They also have fail safe brakes for added security.
- ➔ The Motor is of the Squirrel Cage Induction type with S4 duty. It has a speed of 150 starts/ hours and built-in fail-safe brakes.
- ➔ Hoisting and Cross Travel Motions are secured with EHT, AC/ DC shoe or Disc brake.
- ➔ The Hoists and Cross travel through are supplied with C.T. Power Supply System using trailing cables.
- ➔ The gear boxes of the hoists are of the Helical Type.
- ➔ By adjusting the I-beam size, the trolley can also be adjusted to fir the client requirements.
- ➔ We design our hoists to provide utmost efficiency and minimum losses.
- ➔ Specialised anti-friction ball bearings are used for all the high-speed rotation parts.
- ➔ The design of the hoists is such that makes every part of the Electric Wire Rope Hoist completely accessible and easy to maintain.
- ➔ Only a few of the parts of the Electric Wire Rope Hoists require maintenance.
- ➔ We follow strict and thorough examination of the Electric Wire Rope Hoists which ensures that they are 100% flawless.
Service and Maintenance :
- ⇛ All the parts accessories for our hoists and cranes are manufactured by Krishna Cranes.
- ⇛ We provide dedicated support 24*7 for all the equipments that we supply.
- ⇛ If required, we take up annual maintenance contracts (AMC) for your assistance.
Special Features :
- ✓ Our ensemble clientele includes many national as well as global companies.
- ✓ We have a well-defined and efficient system for sales and services.
- ✓ All our offices and warehouses are well-furnished and well-equipped.
- ✓ Only expert and qualified technicians are assigned the job of maintaining our sales operation system.
- ✓ Any minute, any hour, any day of the year, we are ready to provide assistance to you.
Application of Electric Wire Rope Hoist :
Ware house, Iron and steel, hydro-power, Power Stations, wind power sectors, paper, Chemical, engineering, automotive, Railways, Shipbuilding, rolling mills and many other types of industries, Coal Mines, Petro Chemicals & Chemicals, Oil, Mines & Rigs, Fertilizers, Solvent extraction plants, Paints & Varnish, Industry, LPG Bottling plants, Agro Chemicals, Drugs & Pharmaceuticals, General Industry.
Customization Available
Dimensional Chart :
| S.W.L Kgs | Height of lift Mts | No. of Falls | Speeds mpm. | Motor H.P. | Flange Width of I Beam |
Wire Rope dia | Dimensions (m.m.) | Appro. Wt. Kgs | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hoisting | CT | Hoisting | CT | A | B | C | D | E | F | ||||||
| 500 | 6 | 2 | 5 | 18 | 0.5 | 0.25 | 90-125 | 6 | 425 | 175 | 425 | 650 | 290 | 400 | 150 |
| 1000 | 6 | 2 | 4 | 18 | 0.25 | 0.25 | 90.140 | 8 | 450 | 175 | 425 | 650 | 290 | 400 | 170 |
| 2000 | 6 | 2 | 4 | 16 | 3.0 | 0.5 | 100-140 | 10 | 600 | 200 | 650 | 900 | 310 | 520 | 400 |
| 3000 | 6 | 2 | 3.5 | 16 | 5.0 | 1.0 | 125-140 | 12 | 750 | 200 | 740 | 1050 | 350 | 550 | 450 |
| 5000 | 6 | 4 | 3.5 | 16 | 7.5 | 1.0 | 140-210 | 12 | 950 | 200 | 740 | 1200 | 400 | 550 | 550 |
| 7500 | 6 | 4 | 3 | 15 | 10 | 1.25 | 150-210 | 16 | 850 | 250 | 930 | 1700 | 620 | 720 | 1200 |
| 10000 | 6 | 4 | 2.5 | 16 | 12.5 | 1.5 | 150-2100 | 16 | 1000 | 250 | 930 | 1700 | 620 | 720 | 1200 |
| 15000 | 6 | 4 | 2 | 12 | 18 | 2 | 225-250 | 16 | 1400 | 300 | 1100 | 1850 | 750 | 900 | 1600 |
| 20000 | 6 | 4 | 2 | 12 | 18 | 2 | 225-250 | 16 | 1600 | 325 | 1150 | 1850 | 750 | 900 | 2200 |
Tags : Over Head Cranes, EOT Cranes, Single Girder EOT Cranes, Single Beam Cranes, Single Girder Overhead Crane, Single Girder electric Crane, Single Girder Top Running Crane, Single Bridge Crane.
