scraper, in engineering, machine for moving earth over short distances (up to about two miles) over relatively smooth areas. Either self-propelled or towed, it consists of a wagon with a gate having a bladed bottom. The blade scrapes up earth as the wagon pushes forward and forces the excavated material into the wagon.
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How does a scraper operate?
scraper, in engineering, machine for moving earth over short distances (up to about two miles) over relatively smooth areas. Either self-propelled or towed, it consists of a wagon with a gate having a bladed bottom. The blade scrapes up earth as the wagon pushes forward and forces the excavated material into the wagon.
How does a push pull scraper work?
The scraper can transport its load to the fill area where the blade is raised, the back panel of the hopper, or the ejector, is hydraulically pushed forward and the load tumbles out. Then the empty scraper returns to the cut site and repeats the cycle.
How many yards does a 657 scraper hold?
44 cubic yards
The company’s largest open-bowled scraper, the Cat 657 has a heaped capacity of 44 cubic yards with a rated load of 52 tons.
What is the biggest scraper cat makes?
K-Tec’s 1263ADT is the World’s Largest Pull-Pan Scraper. This mega scraper is a mover of millions, made for niche long haul massive earthmoving projects….General Specifications.
| Heaped Capacity (ISO) | 63 Cubic Yards |
|---|---|
| Ball to Rear Axle Length | 35′ |
| Rack Height (Tiltable) | 4′6″ |
| Weight Distribution | 32% Hitch, 68% Scraper Axle |
What is a scraper tool used for?
A hand scraper is a single-edged tool used to scrape metal from a surface. This may be required where a surface needs to be trued, corrected for fit to a mating part, needs to retain oil (usually on a freshly ground surface), or to give a decorative finish.
What is a scraper operator?
A scraper operator works with heavy equipment to move, haul, or grade the earth. In this career, you operate tools like a bulldozer or grader at different construction sites to build road beds, ditches, and water reservoirs.
What were scrapers used for?
Scrapers are working tools, made to help clean animals hides, butcher animal flesh, process plant material or any number of other functions.
What is a scraper machine used for?
One of the largest pieces of equipment you’ll see on a construction site is a scraper. The purpose of this machine is to scrape the surface of the earth to prepare a site for a building project. It is often used for road work.
What engine is in 657 scraper?
The Cat 657 is powered by a Cat C18 engine in the tractor and a Cat C15 engine in the scraper. Engine power and torque is enhanced by the engines’ Advanced Productivity Electronic Control System, resulting in more material moved throughout the shift, according to Cat.
How heavy is a 657 scraper?
Weights
| Operating Weight – Loaded – Approximate | 268817 lb 121933 kg |
|---|---|
| Operating Weight – Empty – Approximate | 158817 lb 72190 kg |
How much is a new 657 scraper?
Estimated list price: $650,000–$730,000.
What is the purpose of scraping engineering?
The purposes of scraping operations are the following. (1)To make the lubricating oil stay evenly on the surface. (2)To reduce the friction resistance by making the contact area small. (3)To reduce the generation of friction heat by making the contact area small thereby reducing the friction resistance.
How do I become a scraper?
A career as a scraper operator doesn’t have specific degree qualifications. However, you generally need to be able to operate different pieces of CAT heavy equipment, such as a bulldozer, wheeled tractor scraper, or grader. You are required to have a Heavy Equipment Operator License to operate such machinery.
What type of tool is scraper?
What are the types of scrapers?
There are four different types of scrapers, each one operating differently. The four types are single-engine wheeled, dual-engine wheeled, elevating, and pull-type scrapers.
How do you calculate the output of a scraper?
Example : Cycle time of scraper is 6 minutes and a pusher to fill a scraper is 1.5 minutes. Calculate the number of scrapers which a pusher can serve….Scraper output planning.
| Scraper capacity | = 16/23.7 (struck/heap in loose soil m3) |
|---|---|
| Maximum pay load | = 34020 kg |
| Material density | = 1500 kg Lm3 |
| Job efficiency | = 50 min/h |
How much does a Cat 657 scraper cost?
How deep can a scraper cut?
Scraper Bowl
| Apron Closure Force | 39200 lbs (17,781 kg) |
|---|---|
| Capacity – Struck | 32 cu yds (24 m) |
| Cutting Edge Thickness | 1.8 in (5 cm) |
| Depth of Cut – Maximum | 17 in (43 cm) |
| Depth of Spread – Maximum | 26 in (66 cm) |