Application of Pit Digging Machine for Gasoline Engine

For the application of gasoline engine pit digger, due to the small viscosity and fast evaporation of gasoline, it can form uniform mixture with air outside the cylinder, and then suck the mixture into the cylinder, or use the gasoline injection system to inject the gasoline into the cylinder to expand the gas and do work.

Expansion stroke

Power stroke) During this process, the intake and exhaust valves are still closed. When the piston is close to the top dead center, the spark plug emits electric spark and ignites the compressed combustible mixture. When the combustible gas mixture is burned, a large amount of heat energy is released. At this time, the pressure and temperature of the gas increase rapidly, the maximum pressure that can be reached can reach 3-5 MPa, and the corresponding temperature can reach 2200-2800K. The high-temperature and high-pressure gas pushes the piston to move from the top dead center to the bottom dead center. The crank is rotated through the connecting rod and the mechanical energy is output. In addition to maintaining the continuous operation of the engine, the rest is used for external work. During the movement of the piston, the volume in the cylinder increases, and the gas pressure and temperature decrease rapidly. At the end of this stroke, the pressure drops to 0.3-0.5MPa, and the temperature of the gasoline engine

Then 1300-1600K.

Exhaust stroke

When the expansion stroke (power stroke) is close to the end, the exhaust valve opens, and the exhaust is conducted by the pressure of the exhaust gas. When the piston reaches the bottom dead center and moves to the top dead center, the exhaust gas is forced into the atmosphere, which is the exhaust stroke. In this stroke, the pressure in the cylinder is slightly higher than the atmospheric pressure, about 0.105-0.115 MPa. When the piston reaches near top dead center, the exhaust stroke ends, and the exhaust gas temperature is about 900-1200K. Therefore, we have introduced an engine operating cycle, during which the piston moves four strokes back and forth between top and bottom dead centers, and the crankshaft rotates two weeks accordingly.

Application of pit digging machine: It can be used in orchard, mulberry garden, tea garden, nursery and towns for transplanting of small trees, roadside greening and pit digging and top dressing. It can be used to bury piles, etc. at the construction site and pasture. Portable pit digger is an ideal machine for contemporary forest tree planting, desert greening, fence engineering, road engineering management, landscape management, vineyard construction, etc.

Features of pit digging machine: small size, light weight, easy operation, simple maintenance, low oil consumption, low noise, easy start, high hole forming efficiency, low operation cost, low price, etc.

Working efficiency of pit digger: drill bits of various specifications can be selected according to the tree species to meet the user's needs. The efficiency of using the ground drill is dozens of times of that of manual work, and the operation is no less than 80 pits per hour. Calculated as 8 working hours per day, 640 pits can be excavated per day, more than 30 times of that of manual work.

Advantages of pit digging machine: It can free people from heavy physical work, and is widely used in planting trees, planting fruit forests, fences, and fertilizing fruit trees in autumn. The ground drill has strong power, beautiful appearance, comfortable operation, low labor intensity, suitable for various terrains, high efficiency, easy to carry and field operation.

Digger bit: made of manganese steel to make it harder. For hard soil, super hard soil, clay, frozen soil, etc., it can effectively implement the work and meet the requirements of good work

Parameters of pit digger: engine type: air cooled two-stroke (single-cylinder gasoline engine)

Fuel tank volume: 1200ml

Fuel ratio: 25:1

Gasoline engine model: WQ-1E43F

Drive mode: cylindrical worm drive

*High power: 1.51KW/7000rpm

Discharge: 49.4cc

Cylinder diameter x stroke: Φ 43x34mm

Drill speed: 170-200rpm

*Large bit diameter: 300mm

Bit diameter (mm): 60 80 100 150 200 250 300

Net weight (excluding drill bit): 14Kg

Packing size: 450 * 300 * 300mm

Advantages of pit digging machine: manual excavation, digging with pick and spade is both labor-saving and time-consuming, with personnel fatigue and low efficiency. The "environmental tree digging machine" is 30 times faster than manual excavation, and it is not tired. The "environmental tree digging machine" is labor-saving and time-saving, easy to operate and convenient to use. It is an advanced tree digging machine on * *.