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FAQ About Operation Crane

• Types of Cranes

Cranes - these are lifting devices designed to raise materials by means of rope Operation and move the load horizontally within the limitations of any particular machine. The range of cranes available is very wide and therefore choice must be based on the loads to be lifted, height and horizontal distance to be covered, time period(s)

• Truck cane standard upperstructure equipment

pressure compensated load sensing two spool valve for boom elevation and telescope, one pressure compensated load sensing two spool valve for main and auxiliary winch, and one single spool valve for swing. System provides for simultaneous Operation of all crane functions. High pressure regeneration feature provides two-speed boom extension. Quick disconnects are provided for ease of installation of pressure check gauges. OPTIONAL EQUIPMENT Single Axis Armrest Mounted Crane Controls,

• Truck Crane Hydraulic System

to aid in keeping out contaminants and in reducing potential pump cavitation. Capacity is 202 gal (765 L). MAIN WINCH SPECIFICATIONS Hydraulic winch with bent Axis piston motor and planetary reduction gearing provides two speed Operation with equal speeds for power up and down. Winch is equipped with an integral automatic brake, grooved drum, tapered flanges, standard cable roller on drum, and electronic drum rotation indicator. AUXILIARY WINCH Hydraulic two-speed

• New requirements about crane maintenance and competent inspecting person

competent person is someone who: has a sound knowledge of relevant Australian Standards, relevant codes of practice and other relevant legislation has a sound knowledge and competence in the risk management process for the erection, Operation, maintenance, repair, alteration and dismantling of cranes has acquired through training, qualifications or experience, the skills to design procedures for the inspection, maintenance and repair of the crane. For 10-year inspections,

• Tower Crane Superstructure

of the crane. PLC program controller is used, with combination of conventional electrics, to realize the function of logic control and electronic proportional control of the system, greatly improving safety, reliability and efficiency for crane Operation. Crane operation can be shown by a larger computer display, and easy for man-machine interaction. Hydraulic System Electronic proportional control, with combination of close/open type circuit, constant power and variable displacement pump

• Tower crane lifting boom

structure of intermediate equal section and two end variable section, welded by steel tube, jib top and jib foot reinforced by steel plate for load transfer. Fixed jib can be operated within the range of boom length 13^-43m, and lifting Operation length is 9-18m, with two offset angle of 100 and 300. Fixed jib is connected with boom by strut and front and rear guy cable, and reach its working radius with raising and lowering of boors luffing gear. Fixed jib strut is a-shaped two

• Tower Crane Safety Devices

Moment Limiter Detection function: automatically detect boom angle and lifting load. Display function: real time display current actual load, working radius and boom angle. Warning function: automatically send out warning and stop crane Operation when detecting actual load exceed rated load, boom out of limit angle. Detection function: automatically detect boom angle and lifting load. Display function: real time display current actual load, working radius and boom angle. Warning

• Safe Crane Operations

Safe crane Operations include:Read and understand the operators manualFollow all placards, warning labels and signs on machineKnow the SWL of the crane and never exceed itDetermine the weight of the load from accurate sourcesIf an estimate of the load is near the

• Cranes, lifting appliances and fork lift trucks

any other prescribed appliance." Fork lift trucks are widely used in industry and are the cause of many accidents. Although many of these accidents are caused by misuse, defects on fork-lift trucks can significantly influence their safe Operation. Machines known as chain blocks would normally be classified as lifting appliances under this definition.

• Coupled Cranes

a "tandem lift". This is sometimes necessary when the load to be lifted exceeds the safe working load of a single crane, and a crane of an appropriate capacity for the load is not available. Lifting a load with two cranes is a potentially dangerous Operation and requires very careful planning. An accurate calculation must also be made to determine the share of the load which is to be taken by each crane. This Regulation is quite specific in the requirements which must be adopted when this type

• Brakes, Controls, Derricking Jibs and Cabins for Operators of Cranes

where the operator can sustain the load. Each control on the crane or lifting appliance should be clearly identified to show the amount and direction of movement and where practicable controls should be so arranged that inadvertent Operation can be prevented. Cranes with Derricking Jibs Cranes, fitted with derricking jibs, which are driven through a clutch from the same source of power which drives the hoisting mechanism, must be fitted with an interlocking arrangement

• Crane Lifting Operations - Operators of Cranes and Certain Lifting Appliances

A certificate of competence must exist for every operator of a Crane, excavator, fork lift truck, mechanical grab, mechanical shovel and piling machine. The certificate must be issued by The employer of the operator; or The owner of the equipment which the operator is using An operator who has

• Safe Means of Access and Egress and Safe Place of Work for Persons Engaged in Lifting Operations

This requirement, involving the provision of safe means of access and egress, is directed towards the employees who are involved in lifting Operations. This means the work involved in lifting operations, which includes the attaching of loads, using lifting gear, to cranes and lifting appliances prior to the loads being raised, lowered or suspended. Where dock workers need to board

• Crane Lifting Operations - Secureness of Loads

and where the load comprises a number of parts, the load must be so constructed that each part is stable and not likely to become loose.Preventative measures must be taken to ensure that extraneous objects do not become displaced during lifting Operations.Some loads are assembled with securing straps which are only designed to hold the load together, for example bricks and packaged materials. In these circumstances the securing straps must not be used to connect the load to the crane or lifting

• Crane History

cranes developed in different ways. In Europe, where most cranes were used in cities with narrow streets, cranes tended to be built in the form of tall, slender towers, with the boom and the operator on top of the tower. Because quiet Operation was important in crowded cities, these tower cranes were usually powered by electric motors when they became widely available. In the United States, cranes were often used in locations far away from residential areas. Cranes tended to be

• Gantry crane introduce

a gantry-type crane bridge. This crane orbit on the ground, mainly used in open yard storage, shipyards, power plants, ports and railway stations to carry out cargo handling and installation. Gantry cranes lifting bodies, car bodies and bridge Operation structure, with essentially the same bridge crane. As a result of large-span cranes are mostly used to run the respective drive means to prevent operation of a crane skew have increased resistance, or even an accident. Gantry cranes lifting

• WALKING CRANE FOR OPERATION BY POWER OR HAND

which latter travels upon a suitable rail upon the floor. Power is utilized for hoisting and lowering, and for propelling the crane longitudinally upon its track. Cranes of this type are built of any desired capacity from r to io tons, and for Operation either by hand or by power. The base consists of two wrought iron girders united by riveting and carrying between them the truck wheels which support the crane. Rising from the center of the base is a cast iron col. umn, somewhat similar to

• Design and Optimisation of Crane Jibs for Forklift Trucks

any type of crane jib: telescopic crane, lattice crane, closed beam crane, etc. There have been simulated different load cases and boundary conditions that the structure should bear. This load cases can be obtained from normal and extreme Operation of the crane, and there have been taken into account current regulations and previous experience. It has been also necessary to define the methodology to simulate non structural elements, contacts, materials, etc. Concerning regulations,

• Guy Derrick

loads, and wind. This study must be done for each derrick-mounting level. The initial erection of a guy derrick requires use of another lifting device such as a crane. The grillage and its supports, the guy anchorages, and thejumping Operation are all cost factors that need to be considered. But in addition, in order to swing a load past a guy, the derrick must be boomed-in until the boom can pass under the guy, or alternatively the guy must be lowered and then replaced after

• Jacking Towers

such as when the load must be shifted laterally or the lift is from four points. When two towers are used, they may have to be anchored to a substantial moment-resisting footing or would need guys to restrain wind and side loading during the Operation as shown in Figure 2.48. If the towers are guyed, the guys should be preloaded because of the base fixity. Preloaded guys imply larger deadmen for anchorages than passive guys. Strand jacking offers precise control over the load. A system

• Hydraulic Telescoping Gantries

Both types work in groups of two or four jacks. Each jacking unit is made up of a wheeled structural box on which one or two hydraulic cylinders are mounted. A steel header beam is fitted across each pair of jacking units. In a typical Operation, loads to be lifted are suspended from these beams by slings attached to lifting link yokes over the header (Figure 2.50). The assembly can be used in place for lifting, or can be made to travel along steel runway beams or on steel plates

• All-Terrain Carriers

suspension systems that maintain equalized axle loading on uneven surfaces while the crane is in motion or is static. New models are continuing to appear, and models with more than 800-ton (700-t) capacity are available. Though pick- and-carry Operations are usually permitted, outriggers are used for most lifting.

• Tower-mounted crane

Gradually, however, self-erecting tower cranes are penetrating the U.S. market. There is some doubt whether these machines should be classified as tower cranes; though their operating motions fit the pattern, their deployment-setup time, Operation, inspection, maintenance, and demobilization-is more like that of mobile cranes. Freestanding tower cranes range up to about 300 feet (91 m) in height; for lung lower cranes the limitation is less. Though most tower cranes free-stand and

• Crane and Mobile Crane

airplanes have something in common other than the airspace they share. The early history of aviation belongs to the barnstormers and bush pilots who pushed their rudimentary craft to the limits with hardly a thought for risk. Likewise, crane Operation was once a seat-of-the-pants skill governed largely by the notion that lifting equipment could be used right up to the point of tipping over. Both cranes and aircraft of early vintage were machines with modest capabilities that responded

• Mobile Crane Clearances

a crane might come up short. Shortness of reach or lifting capacity is an obvious example. This is best averted by diligent review of loads, radii, and crane capabilities. But there are less obvious shortcomings just as debilitating to an Operation as the straightforward ones that might be ferreted out only by careful study with the benefit of an experienced eye. The more subtle shortcomings often are interferences between the moving crane or load and other objects. These are referred

• Mobile Crane Clearance In Tight Quarters

be prevented by buildings or other obstructions from swinging in a full circle. A crane that starts a project with a free swing might not have clear space by the time the erection work is completed. These limitations not only weigh on the Operation but also need to be considered when the front-end attach ment is to be stowed during nonworking hours or the crane is to be secured in advance of a storm. Interference is sometimes caused by a secondary element that might easily be missed

• Single Girder Overhead Cranes and Double Girder Overhead Cranes

coupled with a close trolley approach hoist give you more working floor coverage This can reduce space requirements in new buildings, or expand your usable space in existing buildings. Adjustable torque magnetic disc/shoe brake for smooth Operation. Forged steel crane wheels for long life. Top quality hoists matched to the duty required. Electric hoist conforms to IS : 3938. Double Girder Overhead Cranes Capacity Range 1.0 tonne to 150 tonnes Span Range 3 meters to

• Crane Classification

covers cranes where service requirements are light and the speed is slow. Loads may vary from no load to occasional full rated loads with 2 to 5 lifts per hour, averaging 10 feet per lift. Typical examples are cranes in repair shops, light assembly Operations, service buildings, light warehousing, etc. Class C (Moderate Service): This service covers cranes whose service requirements are deemed moderate, handling loads which average 50 percent of the rated capacity with 5 to 10 lifts per hour,

• MOBILE CRANES INTRODUCTION

ways in which a standard model can be put to use by the mere change of attachments, such as electromagnets or buckets for handling of bulk materials. Performances factors in which various cranes differ include lifting capacity, radius of Operation, hoisting speed, speed of travel and speed of rotation of the boom. Lifting capacity of models usually purchased for industrial use ranges from 5 to 30 tonnes. The radius of operation depends, of course, on the length of the boom. Auto-lift

• A New Approach for Controlling Overhead Traveling Crane Using Rough Controller

strong structures in order to lift heavy payloads in factories, in building construction, on ships, and in harbors. Until recently, cranes were manually operated. But when cranes became larger and they are being moved at high speeds, their manual Operation became difficult. Consequently, methods of automating their operation are being sought. Two special inference engines (two rule-base) FLC had been done with [1-2]. Many researchers [1-3] deal with the fuzzy controller, some of researchers took

• Crane accessories and auxiliary equipment

utilization of the available space and height and reduce initial construction and subsequent costs Infi nitely variable hoist and travel motions guarantee low-sway handling. Precise, gentle positioning provides for greater safety and convenient Operation CAN Bus technology to meet tomorrow’s demands for high data transmission reliability, corresponding to safety class 3 to DIN / EN 954, ensures optimum monitoring for greater effi ciency thanks to preventive maintenance Control

• Crane & Hoist Safety Responsibilities

Selecting and using rigging equipment appropriately. Having a valid operator's license on their person while operating cranes or hoists. Participating in the medical certification program, as required. Engineering/Maintenance/Operations Department is responsible for: Performing annual maintenance and inspection of all [COMPANY] cranes and hoists that are not covered by a program with maintenance responsibility. Conducting periodic and special load tests of cranes

• Crane Rigging a Load and Crane Overloading

the center of gravity and balance the load before moving it. Initially lift the load only a few inches to test the rigging and balance. Crane Overloading Cranes or hoists shall not be loaded beyond their rated capacity for normal Operations. Any crane or hoist suspected of having been overloaded shall be removed from service by locking open and tagging the main disconnect switch. Additionally, overloaded cranes shall be inspected, repaired, load tested, and approved for use before

• Material Handling Solutions

jib Cranes, including wall bracket, wall cantilever, free standing, and mast type models. In 1986, YJM added a line of Work Station Cranes, which addressed the trend for safe, productive, ergonomic solutions for overhead material handling Operations. YJM ergonomic Work Station Cranes can span up to 30 feet and lift capacities between 150 and 4000 lbs. Today, with the various configura- tions of Gantry, Jib and Work Station Cranes, YJM has the solutions to almost any work cell lifting

• Introduction of overhead crane operator

PROGRAM DESCRIPTION The National Commission for the Certification of Crane Operators (NCCCO) is an independent, nonprofit organization formed in 1995 to set standards for fairly measuring the knowledge and proficiency required for the safe Operation of cranes. NCCCO currently administers a nationwide program of certifications for crane operators and related trades, including riggers and signalpersons. Based on extensive discussions with representatives from all segments of business and

• Limiting Tower Crane Operator Fatigue

that not only is this to his benefit, but also the site will be safer with a fresh operator. Heede has, in turn, hired more crane operators to meet the new company requirements. We employed this policy to improve safety within Heede’s Operation and have discovered the payoff goes beyond protecting our people and equipment. We’ve seen a big turnaround in near-misses, alertness, and operators’ attitudes. If your company is experiencing safety issues, I would suggest you

• Radio Communication Can Assist Container Gantry Crane Operators in Marine Terminals

on signals or directions from employees on the ship and on the ground below to guide them in their lifts. Risk of injuries can be reduced by the use of radio communication by the crane operators and longshore personnel. Hazards of Container Operations Container ships come in and out of ports on a regular basis. At each port, containers must be discharged and loaded. This requires close coordination by terminal and longshore personnel working on the ground, on the ship and in the crane.

• What Are Telescopic Cranes?

Telescopic cranes are another form of heavy cranes employed to transport and maneuver objects from one place to another. Cranes like the telescopic cranes are often used in day-to-day hauling Operations but it has also to be noted that these heavy cranes are very important when it comes to carrying out maneuvering operations in ports as well. Telescopic cranes are mobile in the sense that they transport goods and items in a flexible manner.

• Popular Construction Equipments or Construction Machineries

used in construction sites. Drag line excavation systems: A popular heavy construction machine used in surface mining and civil engineering. The smaller size is used for port and road construction. The larger ones are used in strip-mining Operations for extraction of coal. Drilling Machine: This is used for making foundations, in the building industry. It is also used in oil wells and water wells. Forklift: Also known as lift truck or forklift truck, this is used to pick up and

• Single Girder Overhead Traveling Cranes

to the IS standards. [caption id="attachment_180" align="alignright" width="241" caption="Single Girder Overhead Traveling Cranes"][/caption] Some of the features of our Single Girder Overhead Traveling Cranes are Modern design Safe Operation as per IS 807 / 3177 and Hoist IS 3938 Capacity - 0.5 ton to 20 ton Span - 3Mtrs to 35Mtrs and above Hoist - Ace wire rope Hoist with Motorized Trolley Speed - Single speed or dual speed for Hoisting, Cross travel

• Crane Gantry

but can reach greater heights. To provide greater mobility, a crane will be mounted on a carrier truck and is known as a truck-mounted crane. Whereas the rough terrain cranes, which are mounted on four rubber tires, are capable of pick and carry Operations in rough terrain. Crawler cranes are mounted on a set of tracks with an undercarriage and have better stability and mobility. A suspended crane or overhead crane is used mostly inside factories and they are capable of carrying very heavy

• Double Girder Overhead Traveling Cranes

Fabricated as per the latest industry standards, our range of double girder overhead traveling cranes is available in both single and dual speed for hoisting, cross travel and long travel. Safe to operate, it possesses all the modern Operational controls. Some of the features of our Double Girder Overhead Traveling Cranes are as follows: [caption id="attachment_183" align="alignright" width="239" caption="Double Girder Overhead Traveling Cranes"][/caption] Modern Design Safe

• Gantry Crane or Goliath Crane

IS standard. Our Gantry and Goliath Crane Features: [caption id="attachment_191" align="alignright" width="243" caption="Gantry crane / Goliath crane "][/caption] Heavy and Light duty Indoor and Outdoor purpose Efficient and Safe Operation

• Heavy Duty Jib Cranes

are very versatile cranes.  These Floor Mounted Jib Cranes are perfect underneath large bridge cranes, in open areas where they can serve several work stations, in outdoor applications such as loading docks, or in machining and assembly Operations where they can be overlapped with other jib cranes to provide staged coverage. Industrial Jib Cranes are available in floor mounted, and sleeve insert mounted styles Capacities from 500 to 10,000 lbs, with spans to 20 ft. Use I-beam

• Jib Cranes

such cases, the lowering and lifting of the loads are most often done with the help of a hoist which is either electrically or manually controlled. Jib cranes that are fixed to walls or floors generally have limitations on their range of Operation and this makes the process of lifting maneuvering bulky objects much easier and safer. It also helps to speed up the process. Nowadays, most jib crane manufacturers have the option of customized cranes that is a crane can be built according

• Crane Steel Structures Test Problems

concrete test different plant, steel plant cranes within the test several more should pay attention to the problem. 1 vibration, noise sound, easy to loose connection Vibration absorption effect of the difference between steel plant, crane Operation, especially when the carts will have a greater running vibration and noise. The vibration method is currently used in the crane rail on the beam orbit and bearing pad into the rubber gasket ramp. The rubber gasket can be noise absorber, but

• Crane Control program analysis and comparison

so that increased air-gap magnetic field excitation current enhanced braking torque increases. Braking torque equal to the potential energy load torque acting on the motor shaft, the rotor current, self-excited current remained constant, stable Operation of the motor. When you change the rotor resistance, the motor speed changes, the equivalent of cranes rises and Series Resistance Starting Rotor speed. The program falls in heavy, with medium-speed and high-speed gear, energy saving and more

• Electric Hoist Failure Analysis and Treatment

In recent years, the use of electric hoist to install the increasing volume of production, the gourd is also increasing the number of failures, which not only affects the production of the normal Operation of a major accident will lead to serious and how to reduce or prevent accidents, improve electric hoist the safe operation of timely and accurate processing of various fault occurred in operation, has become an important part of the production.

• Metallurgical cranes on the technical requirements for special work

formulate plans or rehabilitation programs, pay close attention to the implementation of, or should be suspended. During the implementation of the transformation, and use should be care to use, must take effective measures to ensure the safe Operation of equipment. (F) lifting the molten metal crane on a regular basis to shorten the inspection cycle from 2 years to 1 year.

• Crane why not reverse the brakes?

Heavy crane body, the inertia in the run-time great, and immediately reversed when the normal Operation of crane brakes, will run throughout the body with great torque, to the detriment transmission. When the shaft is broken, serious, but also can skew deformation of the body; reverse braking system will place the connection gear fierce impact,

• General requirements of the safe operation of crane drivers

First, the officer should carefully shift change, on the hook, wire rope, brakes, security devices, carefully examine the reliability, timely reporting of irregularities. Second, the boot Operation, should confirm the following in a safe state before the boot: (1) All the controller is placed in zero position; (2) crane and work independent of whether the district personnel, operations personnel are evacuated to safe areas; (3) Crane

• Customer Order cranes should know a few basic parameters

(); Number: () Taiwan Supporting electric hoist Model: Lifting speed: single speed () m / min; double speed () m / min Car speed: single speed () m / min; double speed () m / min Cart speed: single speed () m / min; double speed () m / min Operation control: () cab operation; () cable ground operations; () wireless remote control Cart speed control mode: () linkage Taiwan; () cam speed; () Cab Type: () open; () closed Cab door Location: Right side of the door (); left open (); after

• Construction Machinery Types and Applications

widely used in construction, water conservancy, electric power, roads, mines, ports and national defense sectors etc. Generally speaking, all earthwork construction projects, road construction and maintenance, mobile crane loading and unloading Operations and a variety of construction required for the comprehensive mechanization of the construction works, known as construction machinery. It is mainly used for national defense construction, transportation construction, energy and industrial construction

• Oregon OSHA’s new crane standard for the construction industry

include: Ensuring that ground conditions are firm, drained, and graded Informing the equipment user and operator of the location of hazards beneath the set-up area such as underground tanks or utilities Establishing a system to coordinate Operations when any part of a crane is within working radius of another crane Taking appropriate steps to abate or eliminate hazards when they know or could have known about hazardous conditions on site

• Standardization of Jib Crane Design by “F.E.M. Rules” And Parametric Modeling

Cranes are industrial machines that are mainly used for materials movements in construction sites, production halls, assembly lines, storage areas, power stations and similar places. Their design features vary widely according to their major Operational specifications such as: type of motion of the crane structure, weight and type of the load, location of the crane, geometric features, operating regimes and environmental conditions. However, an appraisal of the available literature reveals

• Crane Component

frequency speed control equipments, etc. BossBuyer crane components represent many years of experience in combination with permanent development in design. Customers benefit from our wide experience as crane manufacturers and our close coOperation with crane builders worldwide. BossBuyer crane components allow economic refurbishment of old cranes. Wheel Bogie Type KS with spur gear drive FP For hoist trolleys and standard cranes. Shaft mounted soft start drives directly coupled

• BossBuyer Jib Cranes

or by attaching a hoist or drive. With a BossBuyer Jib Crane, you can: Economically move materials within an individual workstation or between work areas with a portable jib crane Provide supplemental lifting coverage with a full 360° of Operation

• BossBuyer Gantry Cranes

BossBuyer Gantry Cranes are available in steel, aluminum or a lightweight model along with adjustable heights and spans. With a BossBuyer Gantry Crane, you can: Easily relocate the entire gantry crane with your rental or leased facility Operation or provide its utility in more than one area Maneuver product in tight spaces or uneven surfaces Add affordable, supplemental supporting parts to an existing crane About Our Gantry Cranes: Gantry cranes here at

• Bottom-Slewing Tower Cranes Structure and Configuration

The undercarriage is commonly either sta- tionary (Figures 19.16a and Figure 19.17b) or rail-mounted. Light models may have a wheeled undercarriage, but this is used only for infrequent crane relocations on the jobsite, without loads, and not for Operation. In truck-mounted tower cranes (see below), the truck replaces the conven- tional undercarriage. Another configuration, seen mainly in Europe, is that of a crawler under- carriage (Figure 19.16b). Whenever it is not in motion, the crane is stabilized

• Wind and Tower Cranes

fold up on short notice. All other tower cranes must ride out severe storms. That requirement has induced engineers to identify two principal classes of load combinations germane to the design of these machines: hi-service loads act on the crane in Operation, and out-oj-service loads occur under the influence of high winds when the crane is unmanned. Some cranes have an additional load case that applies only when the crane is in the process of climbing. Each load case combines the dead weight of

• Classification of Crane Anti-sway devices

controller calculates an acceleration (a progressive speed profile) that enables the lifting equipment to reach a given movement speed without the load swaying. Since there is no way to determine the actual state of the physical system, proper Operation requires a zero initial swaying and insignificant external disruptions, such as wind. The installation of an active open loop anti-sway system has an undoubted economic advantage compared with a closed loop system.

• CRANE OPERATORS AND OPERATIONS QUALIFICATIONS

CRANE OPERATORS AND OperationS QUALIFICATIONS (1) An employee selected to operate a crane shall possess all of the following minimum qualifications and be examined for the qualifications at least once every 3 years: (a) Have corrected vision that meets the same requirements

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