How does the cross production method in the productivity improvement of scrapers work? It seems that

Scraper is a set of shoveling, transporting, unloading, bulldozing a high-tech product, it is equal to 1 excavator, 2 dump trucks, 1 bulldozer workload, in a certain distance more efficient, this is the cross-production method.

Scraper contracting project pricing scheme.

1. Valuation basis:

1.Based on the current contracted practice as a reference, it is calculated in working hours or earthwork quantities. We pack oil.

2.The main competition mode of scraper contracting project is excavator with Dongfeng 140 dump truck. So the ** we give must be competitive.

If the gap is large, it can be appropriately raised, and if the price difference is small, it can be appropriately profitable.

3.Based on the experience of our company's contracted projects at the Changning construction site as a reference.

4.Based on the loader loading and unloading the earthwork within 1 minute (this time does not include the transportation time, it actually only takes 36 seconds, but taking into account the driver's rest time and other factors, there is a margin, and the driving speed is 25 kilometers per hour. ）

5.This scenario takes due account of freight, labor wages, and allowances. If the distance is too far, it is necessary to account for the shipping factor.

1.The scraper consumes 300 yuan of fuel per hour.

2.The excavator contracting project of Fangdou is usually calculated by the hour, 300 yuan per hour.

3.For example, the transportation distance of Dongfeng dump truck is 500 meters (unilateral), and the loading capacity of the four sides is 14 yuan per vehicle.

4.Bulldozer SD160 per square dollar.

3. Contracting**:

1.It is recommended to guide customers to pay by the hour appropriately. The minimum is $650 per hour, and it is best to trade at $750.

2.In terms of earthwork, 100 meters and 300 meters are 2 yuan per square, and 300 meters and 500 meters are 3 yuan per square. 500 meters and 800 meters are 4 yuan per party, and 800 meters and 1000 meters are 5 yuan per party.

4. Examples of calculations.

Now take the earthwork transfer distance of 500m as an example.

Excavator (bucket capacity) Dump truck (loading) Bulldozer (SD160) Scraper (speed 25 km/h).

1m3 4m3 wage per square yuan per train transportation time.

Excavate and transport vehicles per hour (4 vehicles required) per train.

120m3 120 4=30 (trains) 60 trains per hour

The hourly wage is 14 yuan per car, and the hourly transportation volume is 17*12=204 m3

300 yuan total wage 14 * 30 = 420 (yuan) total wage.

120 * yuan) according to the earthwork price = 650 204 = yuan).

The total price of the opponent = 300 + 420 + 60 = 780 (yuan) The price of the scraper is 650 yuan by the hour.

Downhill shoveling method The scraper uses the terrain to shovel soil downhill.

(1) Downhill shoveling. Downhill shoveling should be carried out using favorable terrain as much as possible. This allows the scraper's gravity to increase traction, deepening bucket cutting, reducing loading time and increasing productivity.

Generally, the ground slope is 5° 7°. If natural conditions do not allow, a downhill shoveling terrain can be gradually created during construction.

2) Straddle shovel method. The method of reserving the mound and shoveling the soil at intervals. The scraper can reduce the amount of soil sprinkling outward when digging the soil groove on both sides, increase two free surfaces when digging the ridge, reduce the resistance, shovel the soil easily, the height of the ridge should not be more than 300mm, and the width should not be greater than the net distance between the two tracks of the tractor.

3) Shovel aid. When the terrain is flat and the soil is hard, a bulldozer can be used to help the shovel to shorten the shoveling time. The key to this method is that the two machines must be closely coordinated, otherwise the expected effect will not be achieved.

Generally, each scraper is equipped with 1 bulldozer to help the shovel. The bulldozer can do loosening or other sporadic leveling work during the gap time of the shovel to create conditions for the scraper construction.

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Precautions for underground scrapers, underground scrapers, towed scrapers, underground loaders, underground loaders, and mine loaders 1. The traction machinery of underground scrapers, underground scrapers, and tow scrapers should be implemented in accordance with the relevant regulations.

2. When the scraper is working on the soil above grade 4, it should choose to turn loose and remove obstacles.

According to the names of various places, there is no difference between us here, and some local tube loaders are also called bulldozers.