types of crane pdf

(EOT) Cranes come in various types: 1) Single girder cranes - The crane consists of a single bridge girder supported on two end trucks. The hook of these cranes can be lifted up to greater heights when compared to the single girder cranes. This is one of the added advantages of this type of cranes. It has a trolley hoist mechanism that runs on the bottom flange of the bridge girder. EOT Crane stands for Electric Overhead travelling cranes. These cranes have the capacity to lift both heavy and lightweight goods. Electric Overhead Traveling. They are candidates for light to moderate service and are cost effective for use as a standby(infrequently used) crane. The trolley runs on rails on the top of the bridge girders. A safe, reliable and explosion-proof crane. 1 0 obj Generally, double girder cranes provide better lifting height. Top running single girder bridge cranes, Top running double girder bridge cranes and … Similarly, the half gear coupling, its joint and compensation shaft will help in rotating trolley wheels. Very small trolley approach dimensions meaning maximum utilization of the building width and height. There are various types of overhead cranes, industrial cranes & EOT Crane pdf with many being highly specialised, but the great majority of installations into one of three categories. The advantages and limitations of Single / double girder cranes are as follows: There are three working movements of EOT Crane- crane hook up and down lifting, trolley lateral movement and crane long travelling longitudinal motion. From refining to dispatching the metal, these hot cranes takes care of the entire work. The ring gear transmits the driving force and then with the help of pulleys and wire ropes the crane hook is driven up and down. Which is the Most Suitable Jib Crane for Your Facility? HH crane GP crane Applications: Hose handling on tankers. © Copyright 2020. Single girder bridge cranes generally have a maximum span between 20 and 50 feet with a maximum lift of 15-50 feet. A common misconception is that double girder cranes are more durable! These are the cranes that have a capacity of 2 to 50 MT. We export high-quality hoists and cranes with quick delivery and reliable services to Madhya Pradesh, Andhra Pradesh, Haryana, Karnataka, Rajasthan and Tamil Nadu. They can be used to carry heavy weighted goods from one place to another with the utmost convenience. ���Q�w They are a cost-effective option when compared with single girder cranes and are capable of lifting heavier weights. The crane consists of two bridge girders supported on two end trucks. the crane. This transmits the power to high-speed shaft end. There are various models of EOT cranes available in the market. These robust cranes are capable of lifting heavy weights with ease. Different types of cranes are used under different circumstances and environment. <> Double girder cranes are faster, with maximum bridge speeds, trolley speeds and hoist speeds approaching 350 fpm, 150 fpm, and 60 fpm, respectively. Under running, cranes are typically available in standard capacities up to 10 tons (special configurations up to 25 tons and over 90 ft. spans). In these types of cranes, the engine is normally mounted in the undercarriage rather than in the upper portion. They are not used in construction sites. They are compatible with wide pans. Tower Crane The tower crane is a modern form of balance crane. Hoisting capacity: 3–25t Jib radius: 8–24m Applications: designed for installation on floating or fixed platforms. <>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> It has a trolley hoist mechanism that runs on the bottom flange of the bridge girder. endobj Lower Flange Loading of runway beams require careful sizing otherwise, you can peel the flanges off the beam. The hoisting mechanism is similar to a single girder crane with a difference that the crane doesn’t have a movable bridge and the hoisting trolley runs on a fixed girder. They have two main bridges and this makes it robust as well as sturdy in nature. stream They have a broader reach and can cater to different kind of requirements. The mechanism consists of only four active and driven wheels, if the weight that has to be lifted is more, the wheel pressure is reduced. Hook Height – Due to Location of the runway beams, Hook Height is reduced, Roof Load – The load being applied to the roof is greater than that of a top running crane. 2) Double Girder Bridge Cranes - The crane consists of two bridge girders supported on two end trucks. The motor exhibits a driving force of the hoisting mechanism. Crane is a machine capable of lifting, lowering and moving of heavy materials with the use of pulleys and cables. Our toughest crane in terms of turnover, heavy duty operation and working environment. Heavy offshore operation in compliance with the 7th edition of API-2C. Double Girder cranes can be used all heavy lifting purposes. Monorail beams are usually I-beams (tapered beam flanges). These cranes are operated with the help of electricity and one can operate it either by control room attached to the crane or by a pendant. Telescopic Crane. <> 1. For some applications such as production assembly line or service line, only a trolley hoist is required. About us + About Dongqi Crane Dongqi Crane provides you more than 10,000 suits of material handling equipment annually, including overhead cranes, gantry cranes, jib cranes, port cranes, and hoists, etc. A tower crane is always mounted over a strong concrete pad so that anchor bolts can be embedded into the pad, which hold the tower crane when it is lifting heavy loads. They have the parallel runways and the gap is spanned by a travelling bridge. Please fill out the form below, and download the Catalog. The articulated frame device will distribute among the four wheels so that the weight doesn’t pressurize only a particular wheel. The hot cranes are ideally designed to use in factories where lifting and shifting of heavy material are carried on. They are also highly suitable where the crane needs to be fitted with walkways, crane lights, cabs, magnet cable reels or other special equipment. However, not every crane can be a single girder crane. Loader Crane A loader crane is a hydraulically powered articulated arm fitted to a trailer, used to load equipment onto a trailer. The crane is capable of lifting up to 500 tonnes with a span of 60 meters. This is because single girder cranes use much stronger girders than double girder cranes.