Manually-assisted handheld ratchet-pawl variable-diameter branch clamping litchi girdling device

Abstract

The invention provides a manually-assisted handheld ratchet-pawl variable-diameter branch clamping litchi girdling device. The litchi girdling device comprises a handle, springs, a rotating shaft, a movable circle, a fixed circle, a ratchet and a pawl, wherein a spring is fixedly mounted on the handle; the spring is a tension spring; the pawl is meshed with the ratchet so as to fix the movable circle on a litchi branch and prevent the movable circle from rotating along with a girdling cutter during operation; the handle is divided into two parts; the fixed circle is mounted on the handle; two parts of the fixed circle are fastened together to form an integral circle; the handle is opened and closed, and the fixed circle is also opened and closed along with the handle; grooves are formed in the fixed circle; rollers are embedded into the grooves and roll in the grooves; a connection rod passes through center holes of the rollers; the rollers do circumferential rotation; two litchi girdling devices are connected together through the connection rod; a girdling handle is fixed on the connection rod; the girdling cutter is arranged at one end of the girdling handle; a connection plate is arranged at the other end of the girdling handle; the girdling cutter is capable of girdling the litchis through circumferential movement by taking a fixing point between the handle and the connection rod as a circle center and taking a distance from the fixing point to the cutter tip of the girdling cutter as radius under the driving of manual assistance.

Description

technical field [0001] The invention relates to a manually assisted hand-held ratchet girdling device for clamping lychees with variable diameter branches, belonging to the field of mechanical technology. Background technique [0002] Litchi girdling is an important measure to inhibit the growth of branch shoots, prevent the outflow of nutrients, and improve the fruit setting rate, fruit shape index and fruit weight. In addition to the girdling of the main trunk, each side branch must be girdled every year, and the branches growing on the side branches must also be girdled. The growth angle of each side branch is not only the same, the distance between the side branches is small, and the radius of gyration is small. Invention patent 201410485285.2 uses a motor driven by a gasoline engine , the volume is large, the radius of gyration is large, and the inclination angle of the girdling knife is realized by the rotation of the rotary cylinder to drive the platform to rotate aro...

AI Technical Summary

Problems solved by technology

[0002] Litchi girdling is an important measure to inhibit the growth of branch shoots, prevent the outflow of nutrients, and improve the fruit setting rate, fruit shape index and fruit weight. In addition to the girdling of the main trunk, each side branch must be girdled every year, and the branches growing on the side branches must also be girdled. The growth angle of each side branch is not only the same, the distance between the side branches is small, and the radius of gyration is small. Invention patent 201410485285.2 uses a motor driven by a gasoline engine , the volume is large, the radius of gyration is large, the inclination angle of the girdling knife is realized by the rotary cylinder telescopically driving the platform to rotate around the axis of rotation, only one surface can be rotated and tilted, and multiple surfaces can not be rotated and tilted at the same time, and the scope of use is very wide The limitation of the girdling is only suitable for the trunk girdling of litchi. In addition, the incision width of litchi girdling branches ranges from 1.0 to 3.0 cm, and the incision depth ranges from 0.2 to 0.8 cm. The incision should be even, and the phloem contains more wood. Fiber, when the girdling knife is girdling at the girdling place, there is no clamping mechanism, and the phloem near the girdling place is torn, resulting in too large girdling area, the girdling part of litchi is not easy to heal, and the nutrient transport is blocked, which affects the quality of litchi growth and fruit set

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