China began to use power storage reciprocating mowers in the 1920s. In the early and late 1950s, power storage and traction reciprocating mowers were developed and produced. With the development of artificial grasslands, improved twisting mowers were developed and used in the mid-1970s. In countries with highly developed animal husbandry mechanization, the development trend of new mowers is developing in the direction of high speed and energy saving. System composition
This small mower can be divided into 5 systems in structure: 1. Power system; 2. Power transmission system; 3. Walking system; 4. Cutting system; 5. Operating system. Each system cooperates with each other to complete the machine's self-propelled and mowing tasks.
Power system
From the current development status of this type of product, there are two main forms of power systems. One is the traditional conventional internal combustion power system represented by a small gasoline engine or diesel engine. The characteristics of this power system are: high power and long continuous working time, but its biggest disadvantage is high noise and vibration. Therefore, products of this type of power system are suitable for places with low environmental requirements. The other is a new power system with batteries as the power source. The characteristics of this power system are: low working noise and smooth operation. Its biggest disadvantage is that it has less power, short continuous working time, needs frequent charging, and is not suitable for working in places far away from the charging power source. First, let's take a look at the traditional power system with gasoline and diesel engines as the power source. This type can choose a 5-7 horsepower diesel engine or a gasoline engine. The engine provides all the power for the machine to walk and mow the grass. The engine is installed on the engine bracket below with screws. The main components of the engine are: fuel tank, water tank, and combustion cylinder. There is a fuel tank cap on the fuel tank. After opening the fuel tank cap, there is a layer of filter inside. When adding fuel to the fuel tank through the filter, the debris in the oil can be filtered out. At the bottom of the fuel tank is the fuel tank switch. This is the open position and this is the closed position. The fuel in the fuel tank is sent to the engine combustion cylinder through the oil pipe. There is a water tank cap and a water level buoy on the water tank. The higher the water level in the water tank, the higher the buoy position. The clean water in the water tank is mainly used to cool the engine. This machine uses a single engine, and the engine is started by hand using a handle. This is the air filter. The outside air enters the combustion cylinder through the air filter. This is the oil filling port, which is equipped with an oil dipstick to show the oil level. Oil is added from here. Oil is used to lubricate the engine. The throttle switch can control the size of the throttle with a pull cord. When the switch is in the uppermost position, the throttle is closed and the machine stops. When the switch is in the lowermost position, the throttle is at its maximum. There is an engine power output wheel on the other side of the engine. Remove the metal guard on one side to clearly see the power transmission system.
Power transmission
Two power transmission belts are installed on the power output wheel. The forward belt transmits power to the cutting system, called the cutting power belt, and the backward belt transmits power to the walking system, called the walking power belt. The cutting power belt is connected to the cutting system through this rotating wheel. This is a belt pressure wheel connected to a pull-wire switch. When the pull-wire switch is tightened, the belt pressure wheel presses the transmission belt and the engine power is transmitted to the cutting system. When the pull-wire switch is loose, the forward power transmission is cut off. There is also a belt-pressing wheel installed beside the traveling power belt. The belt-pressing wheel is connected to a pull-wire switch. When the belt-pressing wheel is in this position, the belt is in a loose state and the power of the engine cannot be transmitted backwards. Similarly, when the pull-wire switch is tightened, the belt-pressing wheel approaches and presses the power belt, thereby transmitting the power of the engine to the rotating wheel at the back. The gearbox is connected to this rotating wheel. This is the gearbox, which contains several sets of gear combinations. Through different combinations of gears, the engine speed and rotation direction are adjusted. For the gearbox, this rotating wheel is its power input. The gear combination inside the gearbox is completed by the shift lever. This is the power output shaft of the gearbox, which outputs power to the traveling system.
Traveling system
The traveling system is composed of this pair of traveling tires. The power output by the gearbox drives the tires to travel.
