In the 1920s, China began to use the accumulator-type lawn mower. In the early and late 1950s, it developed the production and storage machine and the tractor-type lawn mower. With the development of artificial grassland, it was developed in the mid-1970s. A modified twisted mower is used. In countries where animal husbandry is highly mechanized, the development trend of new lawn mowers is being invented in the direction of high speed and energy conservation. System composition

This small mower can be divided into five systems: 1. Power system; 2. Power transmission system; 3. Walking system; 4. Cutting system; The systems work together to complete the self-propelled and mowing tasks of the machine.

power system

From the development status of such products, the power system mainly has two forms, one is the conventional conventional internal combustion power system represented by a small gasoline engine or a diesel engine. The characteristics of this kind of power system are: high power and long working time, but its biggest disadvantage is that the noise and vibration are large. Therefore, the products of such power system are suitable for places with low environmental requirements. The other is a new type of power system that uses a battery as a power source. The characteristics of this power system are: low noise and stable operation. The biggest disadvantage is that the power is small, the working time is short, and it needs to be charged frequently. It is not suitable for working in a place away from the charging power source. First look at the traditional power system with a gasoline engine and a diesel engine power source. This type of engine can be powered by a 5-7 hp diesel engine or a gasoline engine. The engine provides all the power for machine walking and mowing. The engine is screwed to the engine bracket below. . The main components of the engine are: fuel tank, water tank and combustion cylinder. The fuel tank has a fuel tank cap. When the fuel tank cap is opened, there is a filter screen inside. When the fuel tank is fueled through the filter screen, the impurities in the oil can be filtered out. In the lower part of the tank is the tank switch, which is the open position, which is the off position, and the fuel in the tank sends fuel to the engine combustion cylinder through the oil pipe. There is a water tank cover and a water level buoy on the water tank. The higher the water level in the water tank, the higher the buoy position, and the clear water in the water tank is mainly for the engine to cool down. This machine uses a single engine and uses the handle to manually start the engine. This is the air filter, and the outside air enters the combustion cylinder through the air filter. This is the oil filler port, which is equipped with an organic oil gauge. It can display the oil level. The oil is added from here. The oil is used to lubricate the engine. Throttle switch, the throttle can be used to control the size of the throttle. When the switch is in the uppermost position, the throttle is closed, the machine stops, the throttle is at the lowest position, the throttle is the largest, and the engine power output wheel is on the other side of the engine. The power transmission system can be clearly seen on the side of the metal shield.

Power transmission

Two power transmission belts are installed on the power output wheel, and a pair of forward belts transmit power to the cutting system, called a cutting power belt, and a backward belt transmits power to the traveling system, called a traveling power belt. The power belt is cut and connected to the cutting system through this rotating wheel. This is a pinch roller that is connected to a pull switch. When the pull switch is tightened, the pinch roller presses the transfer belt and the engine power is transmitted to the cutting system. When the pull switch is slack, the power is cut off. A pressure pulley is also arranged on the side of the traveling power belt. The pressure pulley is connected to a pull switch. When the pressure pulley is in this position, the belt is in a relaxed state, and the power of the engine cannot be transmitted backward. Similarly, the tension cable is pulled. When the switch is turned on, the pinch roller approaches and compresses the power belt, thereby transmitting the power of the engine to the rear rotating wheel, and the gearbox is connected to the rotating wheel. This is the gearbox, which is a combination of several gears. Through the different combinations of gears, the engine speed and the direction of rotation are adjusted. For the gearbox, this wheel is its power input. The gear combination inside the gearbox is changed by this gear. The rod operation is completed, which is the power output shaft of the gearbox, which outputs power to the walking system.

Walking system

The walking system consists of this pair of walking tires. The power output by the gearbox drives the tire to walk.

Mowing system

The power system transmits power to the rotating wheel through a belt drive. The rotating wheel is connected to the header part. The gear box is installed in the header, and the circular cutting disk is connected under the cutting table. The cutting plate is evenly mounted. Three cutting knives, three cutting knives are evenly mounted on the cutting table, and the cutting table drives the circular cutting disc to rotate at high speed. The header is connected to the machine frame through the two connection points, and the position of the upper connection can be changed. By changing the positions of the two screws, the gap of the header can be appropriately adjusted to adjust the height of the cutting head. . This is the header guard, which is attached to the top of the frame. The main function is to block the debris that is rolled up during the operation of the cutter, so as not to injure the operator behind.

operating system

Operating system, the above several systems must be under the unified control of the operating system to complete the operation of the operation, the operating system is at the back of the whole machine, all operations are completed on the transmission operating lever and the operating handle, the operating handle is not only It is the operator's armrest and it is equipped with various operating handles. Here, the connection hole between the handle and the machine is divided into three connection holes of high, medium and low. The operation handle can be adjusted according to the height of the operator. On the side of the operating handle, a gearbox clutch handle is mounted, and the lower side of the handle is connected to a metal pull wire. The other end of the cable is connected to the gearbox pinch wheel described above, so that the gearbox clutch handle can control the power direction. Transmission is delivered.

The clutch handle of the cutting system is mounted on the other side of the handlebar. Also, a metal cable is connected to the lower side of the clutch handle. The other end of the handle is connected to the pinch roller described above. Similarly, when the clutch handle is at In the front position, the cable is tightened, the pressure roller is close to the belt, and the power is connected, and the power is transmitted to the header portion through the belt; when the clutch handle is in the rear position, the cable is loose, the pressure pulley releases the power belt, and the power is broken. Open, so this clutch handle can directly control the operation and stop of the header.

This is the throttle control handle. It is also connected to the engine throttle through a metal cable. The throttle control handle has three position areas, which are front, middle and rear, respectively corresponding to the three areas on the throttle. In the final position, the throttle is closed. When the control handle is placed in the middle position, the throttle is moderate. Generally, when the engine is started, the handle is placed in the middle position. When the handle is pushed forward, the throttle is gradually increased. The larger the throttle, the stronger the engine's output power, and the throttle handle position can be adjusted at any time during walking and harvesting to obtain the required power.

Let's take a look at the gearbox lever, which is connected to the gearbox. In fact, it is the gear handle. The power from the engine must be converted by the gearbox before it can be output to the walking wheel. This mower is designed with six advances. The gear, two reverse gears, can be divided into high speed and low speed. Its position distribution is: when the handle is in the lower middle position, it is in the neutral position, the gearbox has no power output; when the handle is moved to the left

Hob mower

Select the low speed gear position. When the handle is moved to the right, select the high speed gear. The specific operation is as follows: first move the handle to the left once, then move the handle to this position, then select the low speed one gear, if the handle moves To this position, the second gear of low speed is selected, here is the third gear of low speed; if the handle is moved to the right first, then the handle is moved to this position, then the high speed four gear is selected, and so on, this is the high speed five gear This is the high speed six gear. It can be seen that the two positions below are the switching positions of the high speed and low speed. The above position is reversed, and there are also high speed and low speed points. The selection method is the same as the forward speed. In the normal operation, the second-order operation is selected. When the grass density is high, the harvesting resistance increases, and the forward low-speed operation should be selected. In the transportation state, you can select the walking gear at any time as needed.