GRASS CUTTER USING WIRE

This invention relates to GRASS CUTTER USING WIRE.

Gardens in the home and parks play an important role at present. Grass grown in the garden make a beautiful scenario. To make this more beautiful grass are cut in good shape. These are done by humans generally. But it is time and energy consuming process. Nowadays parks are made in metropolitan cities in a large number. Assigning workers to all these parks to cut grass will be difficult.

The above mentioned problem are overcome by our invention which is done to cut the grass using wires i.e, with less human work. This grass cutter uses wire with electrical energy. This project mainly focuses on reducing the human effort in cutting grass. This can be applied for cutting bushes and unnecessary growth of other plants also.
This mechanism comprises of angle grinding motor which has the standard power of 1 hp used for grinding purpose. Hence the rotary motion is transmitted to the drive shaft assembly.

The drive shaft assembly contains specially designed liner flexible drive shaft. Clutch drum engages the motor and the drive shaft.

This motion is transmitted to the gear case which is attached to the end of drive shaft assembly. The type of gear used here is spiral bevel gear.

Nylon cutter head is attached to the spiral bevel gear for grass cutting purpose.
FIG shows the model of the project in accordance with our invention.
Referring to FIG,(1) the angle grinding motor ON and OFF can be done manually. When the motor is switched on the (2)clutch drum which is engaged with the motor rotates. As the result the power is transmitted to the (3)drive shaft without reduction in speed. The bearing engagements prevent the wear & tear of the drive shaft.

The power from the drive shaft is transmitted to the(4) gear case assembly. Here the output is obtained with 45 degree inclination due to the presence of the spiral bevel gear in it. The output power from the gear case is sent to the(5) nylon cutter with the reduction ratio of 17:22, as the result the grass is cut at the minimum speed of 11000 rpm.

We claim

1. The grass cutter using wire mechanism comprise of angle grinding motor which is engaged with the drive shaft by using clutch drum. The shaft containing the spiral bevel gear at the end. Finally it holds the nylon cutter head.

2. The mechanism claimed in 1, where engaged at one side of the angle grinding motor which has 1 hp with the minimum speed of 11000 rpm.

3. As per claim 1, the mechanism consists of drive shaft assembly which is placed inside the pipe made of aluminium rod with 35 mm diameter. The maximum length of drive shaft is about 1522 mm.

4. As per the claim 1, the shaft gives the rotary motion to the spiral bevel gear is made of C-45 steel. The maximum speed of gear shaft is 7000/9000 rpm with the reduction ratio of gear is 17:22.

5. The nylon cutter head is fixed or attached at the bottom of the gear case assembly, in which we use nylon wire for cutting purpose.

6. As per the claim 5, washer of different width can be used in order to increase the distance between the shaft and nylon cutter head.

7. The grass cutter using wire with the help of angle grinding motor mechanismis substantially as here in described and illustrated in the figures of the accompanying drawings.