Portable rotary cultivator

Abstract

The invention discloses a portable rotary cultivator which comprises a control rod and a machine head fixing frame fixedly arranged at the front end of the control rod, and further comprises a power assembly, a hose is arranged between the power assembly and the control rod, a rotating shaft is rotationally installed on the machine head fixing frame, a rotary tillage head is arranged on the rotating shaft, and the rotary tillage head is connected with the control rod. A rotary blade rotating along with the rotary tillage head is fixedly arranged on the side wall of the rotary tillage head, and a fixed blade matched with the rotary blade to achieve the shearing function is arranged on the machine head fixing frame. The rotary tillage head comprises a plurality of rotary tillage tooth rakes, at least two rotary blades are arranged on each rotary tillage tooth rake in the length direction, at least two fixed blades are correspondingly arranged on the machine head fixing frame, and rotary cutting areas are formed between the rotary blades and the fixed blades. According to the rotary cultivator, weeds can be cut up while ploughing is conducted, so that the problem that the machine head is damaged due to the fact that the weeds wind the rotating shaft is solved, the ploughing efficiency can be greatly improved, and the service life of the rotary cultivator can be greatly prolonged.

Description

Technical Field

[0001] The invention relates to the field of rotary tillage machinery, in particular to a portable rotary tillage machine. Background Art

[0002] With the reduction of labor force, the problem of farming in rural mountainous areas has become increasingly prominent. Especially in tea gardens, large-scale mechanized farming equipment cannot be used. In order to facilitate farming in mountainous areas, the existing small backpack rotary tillage will have the problem of grass entanglement during farming due to structural defects. It is necessary to stop the machine and remove the grass manually, otherwise the equipment will easily be entangled and shut down or even cause overload and damage to the equipment. To solve this problem, when farming, it is necessary to first remove the grass on the ground with a weeding head, and then replace the rotary tillage head to farm. This method is equivalent to performing two operations and is inefficient. In addition, most of the existing rotary tillage heads are plate-frame structures, and due to structural limitations, the tillage depth is shallow. Summary of the invention

[0003] The purpose of the present invention is to provide a portable rotary tiller to solve the problem that the existing rotary tillers are prone to grass entanglement.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a portable rotary tiller, including a control rod, a head fixing frame fixedly arranged at the front end of the control rod, and a power assembly, a hose is arranged between the power assembly and the control rod, a rotating shaft is rotatably mounted on the head fixing frame, a rotary tiller head is arranged on the rotating shaft, a rotating blade rotating with the rotary tiller head is fixedly arranged on the side wall of the rotary tiller head, and a fixed blade cooperating with the rotating blade to realize a shearing function is arranged on the head fixing frame.

[0005] Furthermore, the rotary tiller head includes a plurality of rotary tiller tooth rakes, each rotary tiller tooth rake is provided with at least two rotating blades along the length direction, and at least two fixed blades are provided on the corresponding head fixing frame, and a rotary cutting area is formed between the rotating blades and the fixed blades.

[0006] In order to improve the efficiency of tilling the land and the stability of the equipment, two rotary tilling heads are provided, which are respectively located on both sides of the head fixing frame, and the two ends of the rotating shaft do not exceed the rotating head.

[0007] In order to prevent weeds from being entangled in the rotating shaft between the machine head fixing frame and the rotary tiller head, a protective cover is fixedly arranged on the machine head fixing frame to block the outer side of the rotating shaft to prevent weeds from being entangled in the rotating shaft.

[0008] In order to improve the weed cutting and processing capability, a guide cover for guiding the weeds to both sides is arranged at the front end of the head fixing frame.

[0009] Preferably, the air guide cover is a V-shaped plate installed at the front end of the machine head fixing frame.

[0010] In order to further improve the diversion effect and the protection capability of the portable rotary tiller, an upper guide protection cover is also provided above the deflector cover. The upper guide protection cover has a structure that is narrow at the top and wide at the bottom, and the front end is smoothly transitionally connected to the deflector cover.

[0011] In order to improve the weed cutting efficiency, fixed blades are arranged on both sides of the front and rear of the rotating shaft on the head fixing frame.

[0012] Beneficial effects of the present invention: The present invention cooperates with the fixed blade on the head of the rotary tiller to cut off the weeds entering between the head of the rotary tiller and the head fixed frame when the head of the rotary tiller rotates, so that weeding and ploughing can be carried out simultaneously, and there is no need to weed first and then plough the land, thereby greatly improving the efficiency of tillage. At least two rotary blades are provided to form a rotary cutting area. In combination with the rotary cutting area provided on multiple rotary tillage tooth rakes, the weeds can not only be cut off, but also the weeds can be damaged and the length of the weeds can be reduced, thereby effectively avoiding the problem of weed entanglement. The protective cover can prevent the weeds from entanglement and adhesion on the rotating shaft, thereby improving the cleanliness of the rotating shaft and thus improving the service life. The tooth rake structure of the present invention can increase the depth of ploughing and perform deep turning of the soil. The deflector is convenient for moving the weeds to both sides to enter the rotary cutting area for cutting when the portable rotary tiller is pushed forward. The upper guide protective cover can further improve the guiding ability of weeds and the protection ability of the rotary tiller head.

[0013] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0015] Figure 2 It is an enlarged schematic diagram of the head fixing frame end in the present invention.

[0016] Figure 3 It is a top view of the head fixing frame end in the present invention.

[0017] Figure 4 It is a schematic diagram of the cooperation between the rotating blade and the fixed blade in the present invention. DETAILED DESCRIPTION

[0018] Examples, such as Figures 1 to 4As shown, a portable rotary tiller includes a control rod 10, a head fixing frame 1 fixedly arranged at the front end of the control rod 10, and a power assembly 20. A hose 30 is arranged between the power assembly 20 and the control rod 10. The power assembly 20 is carried on the back. The operator carries the power assembly 20 on the back, and then holds the control rod 10 to operate to complete the cultivation of the land. The control rod 10 and its power assembly 20 are prior art, and there are many structures on the market. For example, the Chinese patent application number is 2018220678410, and the patent name is a fixing frame, a gasoline engine and a control mechanism 3 described in a backpack mower with a new head, which discloses one of the handheld control rods and power assembly structures, which will not be described in detail here. The innovation of the present invention lies in the design of the head part of the portable rotary tiller. The improvement of the head part of the portable rotary tiller can realize mowing and tilling the land at the same time, and there will be no problem of weeds entangled in the head, which greatly improves the efficiency of tilling the land.

[0019] The specific structure of the head of the portable rotary tiller includes a head fixing frame 1, a rotating shaft 2 installed on the head fixing frame 1, and a rotary tiller 3 installed on the rotating shaft 2. Specifically, two rotary tillers 3 are provided, which are respectively located on both sides of the head fixing frame 1. A cutting gap B is provided between the rotary tiller 3 and the head fixing frame 1, and weeds are cut after entering the cutting gap. In order to prevent the two ends of the rotating shaft 2 from being entangled by weeds, the two ends of the rotating shaft 2 do not exceed the rotating head 3. The rotary tiller 3 includes a sleeve 32 that is matched with the rotating shaft 2. The sleeve 32 is sleeved on the rotating shaft 2, and a bolt hole 33 is provided on the side wall of the sleeve 32. A locking bolt 34 is provided on the bolt hole 33. The rotary tiller 3 is connected and fixed to the rotating shaft 2 by pressing the rotating shaft 2 with the end of the locking bolt 34. A group of rotary tiller tooth rakes 31 are provided on the sleeve 32, preferably three. The rotary tillage tooth rake 31 is fixedly provided with a rotary blade 4 rotating with the rotary tillage head 3 on the side wall near the head fixing frame 1, and the head fixing frame 1 is provided with a fixed blade 5 cooperating with the rotary blade 4 to realize the shearing function. In order to increase the strength of the rotary blade 4 and the fixed blade 5 and prevent them from being broken by flying stones or harder weeds, the thickness of the rotary blade 4 and the fixed blade 5 is not less than 3mm, the angle of the blade edge is about 30° and quenching treatment is performed. In order to further improve the shear strength, the rotary blade 4 is provided on the rotary tillage tooth rake 31 near one end of the sleeve 32 and is fixed by welding. When the weeds enter the cutting gap B, the shearing force of the rotary blade 4 and the fixed blade 5 is applied to complete the cutting of the weeds when the land is cultivated.

[0020] In order to achieve a better cutting and crushing effect, each rotary tillage tooth harrow 31 is provided with at least two rotating blades 4 along the length direction, and the corresponding head fixing frame 1 is provided with at least two fixed blades 5, and a rotary cutting area A is formed between the rotating blades 4 and the fixed blades 5, and the weeds are cut and crushed by the action of the rotating blades 4, thereby greatly reducing the possibility of weeds being entangled on the rotating shaft 2. In order to improve the cutting efficiency, the head fixing frame 1 is provided with fixed blades 5 on both sides of the front and rear of the rotating shaft 2, so that the rotating blade 4 can cut on both sides when rotating one circle, thereby improving the cutting efficiency.

[0021] In order to further protect the rotating shaft 2 , a protective cover 6 is fixedly provided on the head fixing frame 1 to block the outer side of the rotating shaft 2 to prevent weeds from being drawn into the rotating shaft 2 .

[0022] In order to guide the weeds into the cutting gap B and chop the weeds through the rotating blade 4 and the fixed blade 5 on the rotary cutting area A when plowing forward, the front end of the head fixing frame 1 is provided with a guide cover 7 for guiding the weeds to both sides. The guide cover 7 is a V-shaped plate installed at the front end of the head fixing frame 1. When the weeds contact the guide cover 7, they will move along the guide cover 7 to both sides and smoothly enter the cutting gap B. In order to further improve the diversion effect and the protection of the rotary tiller head, an upper guide protective cover 8 is also provided above the guide cover 7. The upper guide protective cover 8 is a structure that is narrow at the top and wide at the bottom, and the front end is smoothly transitionally connected to the guide cover 7.

[0023] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A portable rotary tiller, comprising a control rod (10), a head fixing frame (1) fixedly arranged at the front end of the control rod (10), and a power assembly (20), wherein a hose (30) is arranged between the power assembly (20) and the control rod (10), characterized in that: A rotating shaft (2) is rotatably mounted on the head fixing frame (1), a rotary tiller (3) is arranged on the rotating shaft (2), a rotary blade (4) which rotates together with the rotary tiller (3) is fixedly arranged on the side wall of the rotary tiller (3), and a fixed blade (5) which cooperates with the rotary blade (4) to realize a shearing function is arranged on the head fixing frame (1).

2. The portable rotary tiller according to claim 1, characterized in that: The rotary tiller (3) comprises a plurality of rotary tiller tooth rakes (31), each rotary tiller tooth rake (31) being provided with at least two rotary blades (4) along the length direction, and at least two fixed blades (5) being provided on the corresponding machine head fixing frame (1), and a rotary cutting area (A) being formed between the rotary blades (4) and the fixed blades (5).

3. The portable rotary tiller according to claim 1, characterized in that: Two rotary tilling heads (3) are provided, respectively located on two sides of the machine head fixing frame (1), and both ends of the rotating shaft (2) do not extend beyond the rotary heads (3).

4. The portable rotary tiller according to claim 3, characterized in that: A protective cover (6) is fixedly arranged on the head fixing frame (1) and is located outside the rotating shaft (2) to prevent weeds from being drawn into the rotating shaft (2).

5. The portable rotary tiller according to claim 1, characterized in that: The front end of the machine head fixing frame (1) is provided with a flow guide cover (7) for guiding weeds to both sides.

6. The portable rotary tiller according to claim 5, characterized in that: The air guide cover (7) is a V-shaped plate installed at the front end of the machine head fixing frame (1).

7. The portable rotary tiller according to claim 6, characterized in that: An upper guide protection cover (8) is also provided above the air guide cover (7); the upper guide protection cover (8) is a structure that is narrow at the top and wide at the bottom, and the front end is smoothly transitionally connected to the air guide cover (7).

8. The portable rotary tiller according to claim 2, characterized in that: Fixed blades (5) are arranged on both the front and rear sides of the rotating shaft (2) on the head fixing frame (1).

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