Top Qs
Timeline
Chat
Perspective

Heavy equipment

Vehicles designed for executing construction tasks From Wikipedia, the free encyclopedia

Heavy equipment
Remove ads
"Heavy machinery" redirects here. For other uses, see Heavy machinery (disambiguation).
"Earthmover" redirects here. For other uses, see Earthmover (disambiguation).

Heavy equipment, heavy machinery, earthmovers, construction vehicles, or construction equipment, refers to heavy-duty vehicles specially designed to execute construction tasks, most frequently involving earthwork operations or other large construction tasks. Heavy equipment usually comprises five equipment systems: the implement, traction, structure, power train, and control/information.

Thumb
Heavy equipment vehicles of various types parked near a highway construction site

Heavy equipment has been used since at least the 1st century BC, when the ancient Roman engineer Vitruvius described a crane powered by human or animal labor in De architectura.

Heavy equipment functions through the mechanical advantage of a simple machine that multiplies the ratio between input force applied and force exerted, easing and speeding tasks which often could otherwise take hundreds of people and many weeks' labor. Some such equipment uses hydraulic drives as a primary source of motion.

The word plant, in this context, has come to mean any type of industrial equipment, including mobile equipment (e.g. in the same sense as powerplant). However, plant originally meant "structure" or "establishment" – usually in the sense of factory or warehouse premises; as such, it was used in contradistinction to movable machinery, often in the phrase "plant and equipment".

Remove ads

Innovations and new technologies

Summarize
Perspective

The design of heavy equipment has increasingly incorporated modern electronics and software, a process known as Fleet digitalization. This integration of technology facilitates greater automation, safety monitoring, and operational efficiency on construction and mining sites, creating what is often referred to as an intelligent job site.

Fleet telematics and monitoring

Fleet telematics systems are utilized for the Fleet management of heavy equipment. A ruggedized Telematic control unit, installed on each asset, uses a GPS tracking unit to provide real-time Vehicle location data. In addition to location, the system transmits a wide range of telemetry data, including engine hours, fuel consumption, idle time, and diagnostic fault codes.[1] This data is used for operational oversight, such as to track asset utilization, schedule predictive maintenance, and manage fuel with Fuel-management systems. Studies in the construction industry have correlated the use of such systems with improvements in overall project efficiency.[2] A primary function of these platforms is to address the challenge of aggregating data from a mixed fleet of equipment from various manufacturers into a single, unified interface.[3]

Autonomy and robotics

Research and development in heavy equipment has increasingly focused on robotics and autonomous operation. Several manufacturers have commercialized autonomous systems that allow machines like haul trucks and dozers to operate without a human driver by following pre-programmed routes from a digital site plan.[4] Such applications are most prevalent in mining and large-scale earthwork operations where tasks are repetitive and occur in controlled environments. Semi-autonomous features, such as grade control and automated digging cycles on excavators, are also becoming common, assisting operators in performing tasks with greater speed and precision.

Operator safety and assistance

Technology is applied to improve operator safety and situational awareness. Video telematics systems, which utilize multiple ruggedized cameras, offer operators a comprehensive view of their surroundings to mitigate blind spots. These systems also record operational data for incident analysis. Operator scoring applications analyze telemetry data to identify potentially hazardous operating practices, such as excessive speed or abrupt movements, providing a basis for targeted safety training. Advanced driver-assistance systems (ADAS) are also being adapted for heavy equipment, with features like object detection and collision avoidance alerts to protect both the operator and ground personnel.

Electrification

The development of electric and hybrid-electric powertrains is an area of ongoing development in heavy equipment manufacturing. Several manufacturers, including Caterpillar,[5] Volvo,[6] and Liebherr,[7] have produced electric or hybrid-electric prototypes and commercial models. While technical challenges related to battery capacity and charging infrastructure persist for the largest classes of equipment, electric powertrains provide operational advantages such as the elimination of on-site emissions, reduced noise levels for operation in urban areas, and potentially lower maintenance and energy costs.[8]

Remove ads

Types

Summarize
Perspective

These subdivisions, in this order, are the standard heavy equipment categorization.

Tractor

Grader

Excavator

Backhoe

Timber

Pipelayer

Scraper

Mining

Articulated

Compactor

Loader

  • Loader (payloader, front loader, wheel loader, integrated tool carrier)
  • Skip loader (skippy)

Track loader

Skid-steer loader

Material handler

Paving

Underground

Hydromatic tool

Hydraulic machinery

Highway

Images

  • Thumb
    The Caterpillar D10N bulldozer evolved from tracked-type tractors and is characterized by a steel blade attached to the front that is used to push other equipment and construction materials, such as earth.
  • Thumb
    The bucket excavator Komatsu PC210-LC.
  • Thumb
    The wheel trencher MARAIS SMC 200 R.
  • Thumb
    Iron bar reinforced foundation piles are driven with a drilling machine, concrete pump, mixer-truck, and a specialized auger that allows pumping concrete through its axis while withdrawn.
  • Thumb
    Fixed crane in a coal mine in Germany
  • Thumb
    Caterpillar D9L bulldozer, excavators and other heavy equipment vehicles parked near a quarry in Israel
  • Thumb
    Bucket wheel excavators in Garzweiler surface mine, Germany
  • Thumb
    Wheel loader
  • Thumb
    Grader cleaning and leveling
  • Thumb
    Heavy duty excavator with large bucket equipped.
  • Thumb
    Landfill compactor (tamping tip)
  • Thumb
    Komatsu Dozer pushing coal on the job site
  • Thumb
    A wheeled front loader tractor equipped with a large bucket elevated by hydraulic rams.
  • Thumb
    Folded conveyor on a tracked grinder
Remove ads

Implements and hydromechanical work tools

Traction: Off-the-road tires and tracks

Main articles: Off-the-road tire and Caterpillar track
Thumb
Continuous track (circa 1909)
Thumb
Caterpillar track (circa 2009)

Heavy equipment requires specialized tires for various construction applications. While many types of equipment have continuous tracks applicable to more severe service requirements, tires are used where greater speed or mobility is required. An understanding of what equipment will be used for during the life of the tires is required for proper selection. Tire selection can have a significant impact on production and unit cost. There are three types of off-the-road tires, transport for earthmoving machines, work for slow moving earthmoving machines, and load and carry for transporting as well as digging. Off-highway tires have six categories of service C compactor, E earthmover, G grader, L loader, LS log-skidder and ML mining and logging. Within these service categories are various tread types designed for use on hard-packed surface, soft surface and rock. Since tires are a large expense on any construction project, careful consideration should be given to prevent excessive wear or damage.


Remove ads

Heavy equipment operator

Main article: Heavy equipment operator

A heavy equipment operator drives and operates heavy equipment used in engineering and construction projects.[9][10] Typically only skilled workers may operate heavy equipment, and there is specialized training for learning to use heavy equipment.

Much publication about heavy equipment operators focuses on improving safety for such workers. The field of occupational medicine researches and makes recommendations about safety for these and other workers in safety-sensitive positions.

Remove ads

Equipment cost

Summarize
Perspective

Due to the small profit margins on construction projects it is important to maintain accurate records concerning equipment utilization, repairs and maintenance. The two main categories of equipment costs are ownership cost and operating cost.[11]

Ownership cost

To classify as an ownership cost an expense must have been incurred regardless of if the equipment is used or not. These costs are as follows:

Depreciation can be calculated several ways, the simplest is the straight-line method. The annual depreciation is constant, reducing the equipment value annually. The following are simple equations paraphrased from the Peurifoy & Schexnayder text:

m = some year in the future

N = equipment useful life (years)

and Dn = Annual depreciation amount

Dn = purchase price / N

Book value (BV) in year m

BVm = purchase price – (m x Dn)

example:

N = 5

purchase price = $350,000

m = 3 years from now

BV3 = $350,000 – ( 3 x $350,000/5) = $140,000

Operating cost

For an expense to be classified as an operating cost, it must be incurred through use of the equipment. These costs are as follows:[12]

  • tires
  • 3rd party service contract
  • replacement of high-wear items

The biggest distinction from a cost standpoint is if a repair is classified as a major repair or a minor repair. A major repair can change the depreciable equipment value due to an extension in service life, while a minor repair is normal maintenance. How a firm chooses to cost major and minor repairs vary from firm to firm depending on the costing strategies being used. Some firms will charge only major repairs to the equipment while minor repairs are costed to a project. Another common costing strategy is to cost all repairs to the equipment and only frequently replaced wear items are excluded from the equipment cost. Many firms keep their costing structure closely guarded[citation needed] as it can impact the bidding strategies of their competition. In a company with multiple semi-independent divisions, the equipment department often wants to classify all repairs as "minor" and charge the work to a job – therefore improving their 'profit' from the equipment.


Remove ads

Models

Main article: Model construction vehicle

Die-cast metal promotional scale models of heavy equipment are often produced for each vehicle to give to prospective customers. These are typically in 1:50 scale. The popular manufacturers of these models are Conrad and NZG in Germany, even for US vehicles.

Notable manufacturers

The largest 10 heavy equipment manufacturers in 2022[14]

More information No., Company ...


Other manufacturers include:

Remove ads

See also

References

External links

Loading related searches...

Wikiwand - on

Seamless Wikipedia browsing. On steroids.

Remove ads
Remove ads