Diseño y construcción de una podadora hidráulica manual para árboles frutales: diseño y construcción del mecanismo de corte de una podadora hidráulica manual para árboles frutales.

Abstract

This Work develops one of the three parts of the project named "DESIGN AND CONSTRUCTION OF A MANUAL HYDRAULIC PRUNING MACHINE FOR FRUIT TREES", focusing especially on the design and construction of the cutting mechanism of the machine. We started with a literature review of topics related to the machine and existing machines on the market commonly known as "pruning poles". With this and the user's requirements, it was determined that the cutting mechanism should be capable of transmitting a force of 1068 [kgf] for branches up to 4 [cm] in diameter. The mechanism should be as light as possible (less than 2.5 [kgf]). This mechanism is made up of a Bypass type cutting blade, a tool holder for the cutting blade, a repositioning spring for the blade and the corresponding pins for the incorporation of the cutting mechanism to the rest of the parts of the machine. After the elements of the mechanism are established, the dimensioning of each one of these is conducted, and the construction drawings, the component is built and joined to the other parts (hydraulic mechanism and, extension and transmission mechanism). The corresponding field tests help verifying that the mechanism fulfills the requirements of cutting, transmitting forces and weight.