Certified that the project work entitled “Arecanut Tree Climber and Pesticide Sprayer” Two nozzles are placed on either side at the top of the machine with. Arecanut trees attain a height of about feet. It is mandatory Considering all the casualties in conventional tree climbing we decided to make a robot that. In this context, this project work presents “Areca nut Harvesting Machine.” Here we are designing and fabricating areca nut tree is.

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When the setup reaches on top of the tree the drive motor is switched OFF in the remote control unit.

Design and Fabrication of Arecanut Tree Climbing and Spraying Machine

The remote control circuit and DPDT switch are shown in the figure 3 and figure 4 respectively. The nozzle areanut positioned near the arecanut with the help of guide way motors and then the guide way motors are switched OFF. The machine should be capable of adjusting to the varying cross-section of the tree during upward and downward movements.

This is the most suitable machine for harvesting areca nuts without man climbing on the tree. So development of a unique tree climbing mechanism is necessary which may be used for maintaining and harvesting applications.

The design of the device has to be simple enough for villagers to operate, yet work efficiently to appeal to the majority. The switch board is used to control the DC geared motors, windshield wiper pump, nozzle motors etc. The machine should grab the tree firmly to maintain its positions during the operation. It requires skill to climb arecanut tree. Remote control circuit Figure 4.

Climbing Mechanism and Working hree. Tree climbing machine, Arecanut, Spraying machine. Driving wheels are machined from nylon rods having diameter of mm which is used to provide firm grip and also to operate the climving so that it climbs the tree easily.

It is mandatory to climb the trees a minimum of five times a year for a successful harvest – twice for the preventive spray against fungal disease, and thrice to harvest the arecanut. Many trees like coconut tree, arecanut tree, and palm trees are so tall that climbing them becomes risky.


Only skilled labourers can carry out these farming operations. Nozzle Motor and Pump Nozzle motor is used to control the nozzle attachment for spraying purpose. There is a need to invent a machine to address both efficiency and safety.

Guide way motors are rotated to the required position in order to spray agecanut to the crop. There are much equipment machines in the market to help the farmers in this regard.

Such a process looks easy, in reality it is a laborious and dangerous task. Also, it is very easy to move from one place to another. Macjine the drive motor is switched on, the motor rotates the shaft which in turn rotates the wheels. Arecanut trees attain a height of about feet.

Areca Nut Tree Climber, Model No.: ATC

One crop that has been most affected by this is the arecanut. Climbing Mechanism and Working The arecanut tree climbing and spraying machine works on the basic principle of friction that is the relative lateral motion of two solid surfaces in contact.

This machine is simple and a person with little technical knowledge can easily assemble it in an ordinary workshop. To accommodate for change in the diameter of arecanut tree as the device moves up and down, a spring loaded mechanism is used for exerting sufficient tension required for gripping the tree.

Skilled arecanut tree climbers have become scarce and farmers are finding it difficult to harvest the nuts.

Motors Five motors are used in this machine, in which 3 motors are used to drive the wheels, other climbong motors are used to controlling the nozzle attachment for spraying pesticides. Selection of the Wheel Average Change in circumference of the tree is taken as 30cm to 50cm.

Areca Nut Tree Climber, Model No.: ATC, Rs /set, R Tech Engineering | ID:

The device has been tested for its performance and found safe, reliable, and efficient and also mavhine the problems in climbing and spraying arecanut tree to a good extend. Also the machone of some trees may not be strong enough to bear the weight of the climbing device, hence conventional climbbing machine cannot climbinf used for tree climbing applications [].


It is the main source through which torque cllimbing generated. The only component which is in contact with the tree is the wheels which are made up of nylon. The tension maintained by the spring must be good enough to maintain the gripping force between the wheel and the tree. They climbinh to climb the trees using muscle power. The pesticide is being transported from the tank to the nozzle with machinf help of plastic tubes.

After which the pump is stopped, the whole setup is being brought back by changing the polarity of the switch so that the drive motor rotates in opposite direction there by making the wheels rotate in opposite direction.

The geared motor should be powerful enough to carry the payloads and weight of the machine. Remote Control Unit 5. The frame of the arecanut tree climber can be opened up and held across the tree. Cutting of the areca nut bunch is also easy with a special type knife of this machine.

In this tree climbing machine power is obtained from 12V battery through which drive motors are energized. In this study, considering all the above parameters, a safe, reliable and efficient climbing and spraying machine is designed and fabricated.

Specifications are given below; Volt: Due to the friction between drive wheel and the bark of the tree machine rises up along the length of trree tree. The machine can be used for spraying insecticides also. Introduction Researchers all around the world work on developing climbing machines, most of these climbing machines are capable of climbing regular structures like poles, walls etc.

It provide the very essential torque for the setup to climb up and come down along the length of the tree. Torque Calculation Calculating motor torque, 4.

Hence harvesting fruits and nuts and maintaining them becomes difficult. The remote is used to control the motor. The tension of the spring helps to retain the machine at the required height.