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Other ( )
Excavator ( )
Is essential for dynamics-related studies of an excavator, e.g., controllability, ride comfort, durability, and so on. Since the hydraulic system, which controls the actuators of an excavator, has its own dynamics due to compressibility of hydraulic oil, it is required that the dynamics of the hydraulic system be incorporated into that of the mechanical system to study the coupled dynamic behavior of the excavator.
Excavators are used in a wide variety of ways in construction fields, from digging and soil-moving operations to rock-breaking tasks that require an optional attachment called a breaker. Their common structure consists of a traveling body, a swing body and a front manipulator.
Swing, boom, arm and bucket motions are the most frequent motions of an excavator when it works in a parked condition.
Hydraulic actuators such as hydraulic motors and cylinders drive the swing body, boom, arm and bucket of an excavator. Specifically, a hydraulic motor is used as a driving mechanism for swing motion, and hydraulic cylinders are used for boom, arm and bucket motion respectively. Since the hydraulic system has its own dynamics due to compressibility of hydraulic oil and has highly nonlinear characteristics, it is necessary to consider its effect on the overall dynamic behavior of the excavator. An exact knowledge of the coupled dynamics is crucial for designing the hydraulic system, determining the required mechanical strengths of the major parts, improving ride comfort for excavator.
One can also increase durability of the various mechanical parts of an excavator by using information on the dynamic forces obtained from simulations of the real working conditions of the excavator
One can simulate the transient dynamic behavior of an excavator on the computer, and get insight into how much effect each mechanical or hydraulic design parameter has on the ride comfort. Furthermore, the coupled dynamic model is indispensable for designing a model-based control system for an automated excavator. In all these processes, a simulation environment for an excavator, in which not only the mechanical dynamics but also the hydraulic actuator dynamics can be considered, plays an essential role. It can greatly help to reduce the development costs and shorten the time to market.
Construction equipment ( )
Construction equipment operators use machinery to move construction materials, earth, and other heavy materials at construction sites, mines, and sometimes your back yard. They operate equipment that clears and grades land to prepare it for construction of roads, buildings, and neighborhoods. They dig trenches to lay or repair sewer and other pipelines, and they hoist heavy construction materials. They may even work offshore constructing oil rigs. Construction equipment operators also operate machinery that applies asphalt and concrete to roads and other structures. Operators control equipment by moving levers or foot pedals, operating switches, or turning dials. The operation of much of this equipment is becoming more complex as a result of computerized controls. Global Positioning System (GPS) technology also is being used to help with grading and leveling activities. In addition to controlling the equipment, construction equipment operators also set up and inspect the equipment, make adjustments, and perform some maintenance and minor repairs.Construction equipment operators include: paving, surfacing, and tamping equipment operators; piledriver operators; and operating engineers and other construction equipment operators. Operating engineersand other construction equipment operators operate one or several types of power construction equipment. They may operate excavation and loading machines equipped with scoops, shovels, or buckets that dig sand, gravel, earth, or similar materials and load it into trucks or onto conveyors. In addition to the familiar bulldozers, they operate trench excavators, road graders, and similar equipment. Sometimes, they may drive and control industrial trucks or tractors equipped with forklifts or booms for lifting materials or with hitches for pulling trailers. They also may operate and maintain air compressors, pumps, and other power equipment at construction sites. Construction equipment operators who are classified as operating engineers are capable of operating several different types of construction equipment.
Building machinery ( )
Concrete ( )
Paving and surfacing equipment operators use levers and other controls to operate machines that spread and level asphalt or spread and smooth concrete for roadways or other structures. Asphalt paving machine operators turn valves to regulate the temperature and flow of asphalt onto the roadbed. They must take care that the machine distributes the paving material evenly and without voids, and make sure that there is a constant flow of asphalt going into the hopper. Concrete paving machine operators control levers and turn handwheels to move attachments that spread, vibrate, and level wet concrete within forms. They must observe the surface of concrete to identify low spots into which workers must add concrete. They use other attachments to smooth the surface of the concrete, spray on a curing compound, and cut expansion joints.
Dumper ( )
Dumpers, are used to reposition or empty material handling containers. Dumpers empty containers (boxes, drums, bins, etc.) by tilting them to allow materials to pour out below. Dumpers, are used extensively in waste management and recycling applications, as well as food processing, trucking and transportation, and manufacturing and production lines. These units are designed to improve product handling, efficiency, and reduce cost and time in storage, retrieval and product positioning with maximum flexibility, while reducing damage to products and minimizing worker-related injuries. Dumpers are available in three main styles: box, cart and drum. Box dumpers are used to control the flow of materials from boxes and other containers by tilting them. This tilter style is typically a square-shaped material holding receptacle with a chute either on the side or bottom for dispensing its contents. They are also called "Tipsters." Drop bottom. The box dumper line of products includes vertical lift and dump equipment, totally enclosed dust containment units, floor level, and elevated dumpers. Cart dumpers are used to control the flow of materials from boxes and other containers by tilting them. These devices are commonly used trash collection and curbside recycling; and are generally hydraulically powered. Common cart dumper styles include ground level, dock level, and vehicle-mounted (dump trucks, recycling vehicles) varieties. Drum dumpers are designed for the handling of drum style containers. The drum dumper line includes open chute drum dumpers, dust containment units, and vertical lift and dump units for extended dump heights. Some drum dumper varieties are available with built-in drum lifting forks to enhance dumping control.Inverting loads in this fashion enables broken packages to be removed from the bottom of a stack, and also allows for the replacement of damaged pallets.When determining which styles of dumpers, will perform within your application, there are a number of important requirements to consider. Most notable among these are the weight capacity of the device, the maximum required tilt angle and the maximum required dump height.
Forklift ( )
Forklifts are used to engage, lift and transfer palletized loads in material handling, warehousing, manufacturing, and construction applications. There are three basic types: manual drive, motorized drive, and fork truck. With manual-drive forklifts, the load movement or travel is manually powered or walk-behind. Motorized-drive forklifts have a motorized drive and, in many cases, a protected cab or seat for the driver. Fork trucks are also motorized, but include features such as cabs and backup alarms. Some forklifts are counterbalanced to prevent the vehicle from overturning. Others include hand rails, safety rails, or a rotating element such as a turntable. Truck-mounted forklifts are mounted or mountable on the back or bed of a utility truck. These vehicles include truck-included packages as well as lifts that are sold independently for subsequent mounting. Lift capacity and stroke are important specifications to consider when selecting forklifts. Lift capacity is the maximum, supportable force or load. Stroke is the difference between the fully-lowered and fully-raised lift positions. Additional specifications for forklifts include fuel type and tire type. Fuel choices include electricity, liquid propane (LP), natural gas, compressed natural gas (CNG), propane, gasoline, and diesel fuel. There are two basic tire types for forklifts and fork trucks: pneumatic and solid. Pneumatic or air-inflated tires provide great load-cushioning and drive traction. Solid or cushion tires do not puncture and require less maintenance than pneumatic tires; however, solid or cushion tires offer less shock absorption.There are five classes of forklifts. Class I forklifts are electric-motor rider trucks, either stand-up operator or seated three-wheel units. Rider units are counterbalanced and may have cushion or pneumatic wheels. Class II forklifts are electric-motor trucks for narrow aisle or inventory stock/order picking applications. They may have extra reach or swing-mast functions. Class III forklifts are electric-motor trucks, either walk-behind or standing-rider operated. Automated pallet lift-trucks and high lift models are often counterbalanced. Class IV forklifts are rider fork trucks, with cabs and seated controls, internal combustion engines, and solid or "cushion" tires. Class V forklifts are rider fork trucks, with cabs and seated controls, internal combustion engines, and pneumatic tires. Like Class IV forklifts, they are typically counterbalanced. Class VI forklifts are sit-down rider, tow tractor lifts. They are supplied with electric or internal combustion engines. Class VII forklifts are designed for use on rough terrain. Typical applications include agriculture, logging and construction. Class VIII forklifts include all personnel and burden carriers.
Search equipment ( )
Motor grader ( )
The very features and characteristics of motor graders that make them such valuable multipurpose machines for grading, shaping, and moving earth and other materials also complicate the job of selecting the right model for your job sites.
The engine also features an electronically controlled, high-pressure fuel-delivery system. This new system provides a more consistent and precise way to deliver fuel over the entire spectrum of engine speeds and machine applications. The result is enhanced uptime through improved reliability, and performance that's fine-tuned to the ground for a significant productivity boost.
When it comes to versatility in large earthmoving equipment, the motor grader ranks as the hands-down winner. You can use this remarkable piece of equipment to establish a rough grade, produce a precise finished grade, spread stone, mix aggregate and other materials on a new road, cast material off an existing road or bring it back for top dressing, cut or clean a ditch, clear snow, and slope a bank. Add attachments, and you can also scarify hard ground, rip up asphalt, and doze construction materials. Quite a feat for a machine that's designed primarily for one function: to move dirt, stone, and other material sideways.
motor graders must deliver on three key attributes: durability, productivity, and serviceability. Graders must have a strong chassis and ample power to move through widely varying conditions - from overgrown ditches to drifted snow.
Several other factors also play key roles in a motor grader's performance. The machine must have enough weight to cut through material and sufficient engine torque and horsepower to push the blade. At the same time, the front wheels can be leaned right or left (up to about 18°-20º) to offset the load of material on the blade, while the frame can be articulated (about 20º-23º) right or left to compensate for changing moldboard draft or to extend the reach of the blade. The end result is a machine that stands in a class by itself.
"By combining all these elements, the motor grader is able to hold a finer grade than any other piece of construction equipment." Motor Grader Basics Just how well any one motor grader model meets your unique job requirements depends on a number of factors, such as engine and hydraulic systems and components and performance and operating features.
"The variation comes in how each particular machine performs the various functions, whether it's transferring engine power to the wheel, visibility to the blade, or maintenance procedures."Among the areas to consider: Size motor graders are available in a wide array of sizes that enable them to tackle a broad range of construction jobs, from touching up city alleys and grading residential cul-de-sacs to building freeways and pioneering roads in forests and quarries.
Loader ( )
Farm equipment ( )
Exhibitions ( )
Dozer ( )
Dozers can move dirt, clear land, build dams and ponds without grade staking. Ideal for complete grading, road and drainage systems on site. Saves re-work for reclamation applications by minimizing re-handling of spoil piles, resulting in significant savings. Dragline bench control provides flat surface around the dragline to ensure it operates at the correct elevation.
The provision Dozer system is a fully integrated subsystem designed to improve the productivity of both track and wheel dozers in surface mines.The system uses high- precision GPS, mine-planning package information,a wireless radio network, and onboard Color Graphics Consoles (CGC) to provide continuous guidance to dozer operators on how to complete their work projects. Information displayed to the operator on the CGC includes a map of the work region ,the dozer’s real- time position in the region, continuously updated cut-and-fill requirements, and local hazards. This enables operators to work safely and efficiently, day or night, without the use of flags ,stakes ,or other survey activities. It also eliminates costly rework. As the dozers work, the provision system keeps statistics on volume of material moved, number of passes made, distance of each pass, cut/ fill data, and more.Reduced support costs, one infrastructure»Improved equipment utilization The dozer operator can work during poor visibility and at night, and new projects are instantly available to the operator when a project is completed » Compatibility with all manufacturers’
Road construction ( )
Trucks ( )
End trucks are motorized or manual devices that run on girders. They are used to position and support lifts or manipulators over a work area. There are many different types of end trucks. Examples include hand operated end trucks, crane end trucks, overhead crane end trucks, and motor driven end trucks. A hand operated end truck consists of a wheel assembly that is connected to the lower portion of a brace, which extends down from the side rails. A hand operated end truck also includes a load support system that can be adjusted to lift the load. A crane end truck is made of heavy steel and suitable for demanding applications such as mining. An overhead crane end truck can be built from a bridge crane end truck and is capable of handling large loads. A typical crane end truck includes a trolley and hoists. A motor driven end truck can have single or dual motor drives and is available in different model types. Other types of end trucks are also available. Selecting end trucks requires an analysis of performance specifications, product features, and end-use applications. Some end trucks consist of an enclosed gear unit. These devices are designed to reduce noise levels and are suitable for crane-based applications. Specifications for a crane end truck include capacity (lbs.), beam length (in.), and rotation with a full range of motion. An overhead crane end truck has a center-to-center bridge width and can be used with electric, manual, or air hoists. The capacity of such hoists may range from 500 lb. to 20,000 lbs. A motor driven end truck can handle 3, 5, 7.5, or 10 ton capacities. An end truck hoist is a pulling or a lifting device that is used to lift or move a load. Other end trucks may carry additional product specifications and provide other features.
Roller ( )
The technical parameters of durometer land groove ratios, rubber compound selections, and balance specifications of contact rolls are confusing even to the most experienced technical personnel.
Improper selection of contact roll specifications can cost you in production speed, abrasive costs, undesirable stock removal, and poor finishes.
Durometers hardness.Measurement of the hardness of rubber is very important.Soft Durometers - (30-50 Shore A Scale) Roll coverings are used when aggressive stock removal is not of primary concern, but even processing of an irregular surface may be the primary objective or for generating finer finishes.Medium Durometers - (60-80 Shore A Scale) These durometers can be used to try and avoid a median between hard and soft durometers. These rolls will achieve good stock removal rates while still conforming to slight irregularities in the contour of the work surface.Hard Durometers - (85-95 Shore A Scale) This is used for aggressive stock removal or when precision tolerances are critical. A guide for figuring land-groove ratios It is very important to processing that the ratio you choose be perfectly maintained across the entire roll face.
CRANES
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The Quayside Ship-to-Shore Crane comes in a variety of models with varying spans and outreaches and are specifically designed for today’s ever changing modern port facility whilst also considering existing site conditions. The cranes are suitable for handling container vessels up to mega-max size.
Industrial cranes raise, shift, and lower loads with a projected, swinging arm or a hoisting apparatus supported on an overhead track.
Industrial cranes differ in terms of product specifications, features, and applications.
Cranes Management Fully automated overhead crane operation from a single computer. System is 100% automatic and autonomous. It can operate 24 hours a day, 7 days a week, fully independently with no manual intervention.
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Parts & Attachments
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CRANES SHIPYARD.
Cranes shipyard ( )
All crane lifts shall be evaluated by a Shipyard Rigging Engineer. The Recipient shall provide a crane lift arrangement showing the pick up points and rigging gear for complex lifts and critical lifts.The allowable stress in tension and bending to be used in the design of the lift gear, lift arrangement and the attachment points on the cranes shall be the yield strength of the material
CRANES SPECIALISTES
Hydraulic Trucks Rough Terrains ( )
Crawlers/Draglines All Terrains ( )
Carry Deck Conventional Trucks ( )
Boom Trucks Gantry/Overheads ( )
Trucks Knucklebooms Material Handlers ( )
Tower Cranes Drywall/ ( )
Towers are used to provide elevation, stabilized support or position control for personnel or equipment. They provide a line of sight for viewing and illumination as well as the transmission and reception of signals.
-Lifting towers provide crane-like material handling capability.
Cranes Aerial Lift Bucket ( )
Trucks Downcab RT's Pedestal Cranes.( )
