Simple manual weeding rake

Abstract

The utility model relates to a simple manual weeding harrow, which mainly comprises a fixed toothed bar, a fixed toothed harrow, a movable toothed bar and a movable toothed harrow, a grab handle is arranged at one end of the fixed toothed bar with a certain length, and the other end of the fixed toothed bar is vertically fixed with the semi-arc fixed toothed harrow with even number of teeth, thick root and sharp front; one end of the movable toothed bar is fixedly provided with a movable toothed bar which is matched with the semi-arc shape of the fixed toothed bar, the rake teeth of the movable toothed bar and the fixed toothed bar are adjacently contained on one side, the roots of odd teeth are thick, and the front ends of the odd teeth are sharp, the other end of the movable toothed bar is provided with a shifting ring, the movable toothed bar and the fixed toothed bar are movably connected through a bolt, and a bidirectional torsion spring is arranged at the bolt joint of the movable toothed bar and the fixed toothed bar. Odd teeth of the movable tooth harrow are normally located on the adjacent side of even teeth of the fixed tooth harrow, due to clamping of the fixed tooth rod and other structures, the weeding operation is not too tired, equivalently, the length of a human hand is prolonged, and therefore the purposes of reducing labor intensity and improving operation efficiency are achieved, and the movable tooth harrow is very simple in structure and reliable in effect.

Description

Technical Field

[0001] The invention relates to an agricultural gardening tool, in particular to a simple manual weeding rake. Background Art

[0002] The four major hazards caused by weeds are competing with crops for light, water, fertilizer and space. Weeds are intermediate hosts for diseases and pests, reducing crop yield and quality and increasing production costs.

[0003] Manual weeding is the most effective and safest method. It offers the lowest material costs and zero side effects, especially since it completely eradicates weeds by root. However, manual weeding is a difficult task. As the ancient saying goes, "hoeing the fields at noon, sweat dripping to the soil, who knows that every grain of rice on the plate is the product of hard work?" For farmers, weeding is a daunting task. While many herbicides are now commercially available, they not only pollute crops but can also harm farmers' health. Therefore, many farmers pursuing greener food practices have reduced their use of herbicides. However, manual weeding is labor-intensive, making it a real burden for farmers. In recent years, the cost of manual weeding has steadily increased, exceeding 150 yuan per mu (approximately 150 yuan per mu), and its efficiency is extremely low. The disadvantages of manual weeding are that it is time-consuming and labor-intensive, with labor costs rising exponentially. On average, one person weeds 0.5 mu (approximately 9 hours) per day, while applying herbicides can cover 10 mu (approximately 100 acres), increasing labor costs 20 times. Manual weeding has a thousand benefits but one drawback! But in reality, it's precisely this single hazard that has led people to abandon manual weeding in favor of herbicides, which offer only one benefit over all the harms! Conventional herbicides carry significant risks and can easily harm crops. The invention and widespread use of herbicides in modern society has solved the problem of weed control, but it has also opened a new era. While herbicides effectively control weeds, they also pollute other plants, soil, and water sources, seriously disrupting the ecological balance of farmland. Furthermore, extensive scientific evidence demonstrates the health risks of herbicides to humans, especially children. Herbicide poisoning can cause serious health problems, and their residues in food can also pose health risks. Consequently, in recent years, manual weeding has become the dominant method for commercial and medicinal herb fields. Working face-to-face, under the scorching sun, is not only laborious but also requires more than just a quick fix. As the saying goes, "Wildfires cannot extinguish them, but spring breezes bring new growth." Weeds are incredibly resilient, and once you remove one, another quickly reappears. To prevent the recurrence of weeds, the best approach is to pull out their roots and remove them from the target soil. This is the only way to effectively curb weed growth and significantly reduce their number. However, weeding is difficult and laborious, requiring a squatting position that strains both the waist and hands, and is also inefficient. Therefore, there is an urgent need to develop a simple manual weeding tool that can reduce labor intensity and improve efficiency. Summary of the Invention

[0004] In response to the above problems, the present invention aims to provide a simple, lightweight, practical and efficient manual weeding tool, and the technical solution adopted is: a simple manual weeding rake, mainly composed of a fixed tooth rod, a fixed tooth rake, a dynamic tooth rod and a dynamic tooth rake, characterized in that: a handle is provided at one end of the fixed tooth rod with a certain length, and a fixed tooth rake with semi-arc-shaped even-numbered teeth with thick roots and front tips is vertically fixed at the other end; a dynamic tooth rake with odd-numbered teeth with thick roots and front tips that matches the semi-arc shape of the fixed tooth rake and the rake teeth of the two are adjacent to each other on one side is fixed at one end of the dynamic tooth rod, and the length reaches the handle of the fixed tooth rod, and a shift ring is provided at the other end, and the dynamic tooth rod and the fixed tooth rod are respectively provided with bolts at the middle part that are radially perpendicular to the root of the rake head to connect the two movably; at the same time, a bidirectional torsion spring is provided at the bolt connection between the dynamic tooth rod and the fixed tooth rod, so that the odd-numbered teeth of the dynamic tooth rake are normally on the side adjacent to the even-numbered teeth of the fixed tooth rake.

[0005] In order to suit the use of people of different heights and arm lengths, fixed gear rods and movable gear rods of different lengths can be produced to achieve the best use effect of user comfort.

[0006] The bidirectional torsion spring is used to ensure that the odd-numbered teeth of the moving tooth rake are stably located on the side adjacent to the even-numbered teeth of the fixed tooth rake in normal state, and at the same time it is convenient to adapt to the user's left-handed working habits.

[0007] The design concept of this invention is that due to the action of a torsion spring, the odd-numbered teeth of the moving-tooth rake head are normally positioned adjacent to the even-numbered teeth of the fixed-tooth rake head. This effectively closes the gap between the teeth of the fixed-tooth rake, creating a spring-loaded, clamping force between the moving-tooth rake and the fixed-tooth rake. When a weed becomes lodged between the teeth, the moving-tooth rake can move toward the fixed-tooth rake, creating a gripping action that adapts to weeds of varying thicknesses, gripping the weed. Pulling the handle pulls the weed out, rather than breaking it, mimicking the hand-grip action of pinching and pulling the weed. Once the weed is pulled out, the moving-tooth connecting rod is pulled to release the moving-tooth rake, which then plucks the weed and collects it out of the field, effectively achieving the desired weed removal effect. Furthermore, the fixed-tooth rod, with its length, allows weeding operations to be performed with a straight back, minimizing strain on the operator's waist and hands. This effectively acts as an extension of the human hand, thereby reducing labor intensity and improving efficiency.

[0008] Since the invention has a very simple structure and reliable effect, it will be widely used in practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A three-dimensional schematic diagram of a simple manual weeding rake.

[0010] Figure numerals: 1, fixed tooth rod; 2, fixed tooth rake; 3, handle; 4, movable tooth rod; 5, movable tooth rake; 6, shift ring; 7, bolt; 8, bidirectional torsion spring. DETAILED DESCRIPTION

[0011] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the examples, describing exemplary embodiments according to the present application. However, these exemplary embodiments can be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of this application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. For clarity, the thickness of layers and regions is exaggerated in the drawings, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0012] See Figure 1 It can be seen that a simple manual weeding rake is mainly composed of a fixed tooth rod 1, a fixed tooth rake 2, a dynamic tooth rod 4 and a dynamic tooth rake 5. A handle 3 is provided at one end of the fixed tooth rod 1 with a certain length, and the other end is vertically fixed with a fixed tooth rake 2 with semi-arc-shaped even-numbered teeth with thick roots and front tips; a dynamic tooth rake 5 with odd-numbered teeth with thick roots and front tips that matches the semi-arc shape of the fixed tooth rake 2 and the rake teeth of the two are adjacent to each other on one side is fixed at one end of the dynamic tooth rod 4. The length reaches the handle of the fixed tooth rod, and a shift ring 6 is provided at the other end, and the dynamic tooth rod and the fixed tooth rod are respectively provided with bolts 7 radially perpendicular to the root of the rake head in the middle to connect the two movably; at the same time, a bidirectional torsion spring 8 is provided at the bolt connection between the dynamic tooth rod and the fixed tooth rod, so that the odd-numbered teeth of the dynamic tooth rake are normally on the side adjacent to the even-numbered teeth of the fixed tooth rake.

[0013] When using the present invention, the torsion spring causes the odd-numbered teeth of the moving-tooth rake head to normally be located on the side adjacent to the even-numbered teeth of the fixed-tooth rake head. When weeds become lodged between the rake teeth, the moving-tooth rake can move toward the fixed-tooth rake, thereby creating an action that can adapt to weeds of varying thicknesses, clamping the weeds. The weeds can then be pulled out by pulling the handle rather than shoveling them, simulating the action of pinching and pulling out a weed by hand. After the weeds are pulled out, the moving-tooth connecting rod is toggled to release the moving-tooth rake, and the weeds are then picked off and collected and removed from the field, achieving the desired weed removal effect. Furthermore, the fixed-tooth rod, having a certain length, makes weeding less tiring because the operator can stand up straight, minimizing damage to the operator's waist and hands. This is equivalent to extending the operator's hand, thereby reducing labor intensity and improving work efficiency.

[0014] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A simple manual weeding rake, mainly composed of a fixed tooth rod, a fixed tooth rake, a movable tooth rod and a movable tooth rake, characterized by: A handle is provided at one end of a fixed tooth rod with a certain length, and a fixed tooth rake with semi-arc-shaped even-numbered teeth with thick roots and front tips is fixed vertically at the other end; a dynamic tooth rake with odd-numbered teeth with thick roots and front tips that matches the semi-arc shape of the fixed tooth rake and the two rake teeth are adjacent to each other on one side is fixed at one end of the dynamic tooth rod, and the length reaches the handle of the fixed tooth rod, and a shift ring is provided at the other end, and the dynamic tooth rod and the fixed tooth rod are respectively provided with bolts radially perpendicular to the root of the rake head in the middle to connect the two movably; at the same time, a bidirectional torsion spring is provided at the bolt connection between the dynamic tooth rod and the fixed tooth rod, so that the odd-numbered teeth of the dynamic tooth rake are normally on the side adjacent to the even-numbered teeth of the fixed tooth rake.

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