The scope of application of the scraper, and the energy efficiency.

Cleaning coal is a big task that requires the use of reliable machines. Caterpillar wheeled trailed scrapers are the only products designed specifically for coal stacking and handling needs.

Caterpillar 637G and 657G coal hopper scrapers can be used to stack and maintain coal piles, as well as to carry loads to infeed** systems to meet the plant's combustion needs.

Here are the key benefits of Caterpillar coal bucket scrapers:

Twin engines provide maximum payload and faster cycle times.

With all-wheel drive, it can work efficiently in poor road conditions and climb slippery coal piles.

The larger capacity coal scraper has a longer and taller bucket than a standard-capacity scraper bucket and can haul 50 yards (38 m) with the 637g and an astonishing 73 yards (56 m) with the 657g.

The coal bucket scraper can effectively compact the coal pile, squeeze out the air in the coal pile, and reduce the risk of spontaneous combustion of coal.

637g Net Power - Tractor - 1-2 Gear Copy 373 kW (500 hp) 211 kW (283 hp).

Capacity 38 m³ Top speed 53 kph

657g net power - Tractor - 1-2 gears copy 447 kW (600 hp) 337 kW (451 hp).

Capacity 56 m³ Top speed 53 kph

Are you asking about electric scrapers?

Answer]: a, d, e

The test point involved in this question is the scope of application of the scraper. The scraper is suitable for excavating one to four types of soil with a moisture content of more than 27%; Large-scale site leveling, sock pressing and reconstruction; excavation and earthwork within 800m of the transportation distance; Excavation of large foundation pits (grooves), pipe trenches, filling roadbeds, etc. However, it is not suitable for use in Huainian gravel layers, tundra zones and swampy areas.

Answer] :d In order to improve the production rate of the scraper, in addition to planning a reasonable route, the following construction methods can also be adopted according to different construction conditions: downhill shoveling; Straddle shovel method (spaced shoveling); Contains bumper argument and shovel aid.

Answer]: Grinding d

In order to improve the productivity of the shovel stool touring base conveyor, in addition to the reasonable planning of the road jujube line, according to different construction conditions, the downhill shovel method, the straddle shovel method and the shovel method can be adopted.

Answer] :d textbook p180

This question examines the construction technology of earthwork engineering. In order to improve the productivity of the Tuanzu shovel shovel machine, in addition to planning a reasonable route, Luma can also use downhill shoveling, straddle shovel method and shovel assistance method according to different construction conditions.

The main function of the scraper does not include: bulldozing

The scraper is a kind of shovel transportation machinery that uses a bucket to shovel the soil and load the crushed soil into the bucket for transportation, which can complete the comprehensive operation of shoveling, loading, transporting liquid soil, unloading and layered filling, and local compaction. It is suitable for railway, road, water conservancy, electric power and other engineering leveling site work.

The scraper has the advantages of simple operation, not limited by terrain, independent work, fast driving speed and high production efficiency. It is suitable for one to three types of soil, such as shoveling more than three types of soil, need to loosen the soil in advance. The widely used scrapers on the market are divided into two types: internal combustion scrapers and electric scrapers, and the internal combustion scrapers are suitable for well-ventilated working environments and have the characteristics of flexibility and efficiency.

The electric scraper is more environmentally friendly and pollution-free for rough combustion. Its characteristics, structure, classification, development achievements, operation process, safety regulations, etc. are introduced in detail.

Answer]: b, c, d

p58-59

The characteristics of the scraper are that it can independently complete the work of shoveling, transporting, unloading, filling, compaction, etc., and has low requirements for the first macro of the driving crack road, fast driving speed, flexible operation, convenient operation, and high production efficiency.

Answer] :d This question examines the production capacity and applicable conditions of highway engineering construction machinery and equipment. The scraper should be constructed in the I, grade soil, in case of encounter, grade soil should be loosened in advance.

In terms of soil humidity, it is most suitable for construction in loose sand and clay soil with low humidity (water content below 25%), but it is not suitable for working in dry silt and moist clay.

Summary. Scraper shovel aid device is a special loading and unloading equipment, which is composed of hydraulic bucket, hydraulic claw machine, hydraulic arm and hydraulic support, with the functions of lifting goods, loading and unloading, handling, etc., which can meet the operation requirements of different heights, depths and angles. The bucket of the scraper shovel aid device can be used to grab, carry and load materials, the hydraulic claw machine can grasp and handle the materials stably, the hydraulic arm can adjust the height and depth according to the operation requirements, so that the operator can easily complete the loading and unloading task, and the hydraulic support can stably support the scraper to prevent trembling and shaking during the operation, so as to ensure stable operation, safe and efficient loading and unloading.

The use of the scraper shovel aid device is more flexible, which is conducive to improving operation efficiency, reducing labor, and can meet the loading and unloading operations of different types of materials, which greatly improves the operation efficiency.

Scraper shovel aid device is a special loading and unloading equipment, which is composed of hydraulic bucket, hydraulic claw machine, hydraulic arm and hydraulic support, with the functions of lifting hosiery goods, loading and unloading, handling, etc., which can meet the operation requirements of different heights, depths and angles. The bucket of the scraper shovel aid device can be used to grasp and conceal and take, carry and load materials, the hydraulic claw machine can grasp and carry the materials stably, the hydraulic arm can adjust the height and depth according to the operation requirements, so that the operator can easily complete the loading and unloading task, and the hydraulic support can stably support the scraper to prevent trembling and shaking during the operation, so as to ensure the stability of the operation, safe and efficient loading and unloading. The use of the scraper shovel aid device is more flexible, which is conducive to improving operation efficiency, reducing labor, and can meet the loading and unloading operations of different types of materials, which greatly improves the operation efficiency.

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