Branch and trunk disease control device for pear trees

Abstract

The utility model discloses a branch and trunk disease control device for pear trees, which comprises a body and a motor, the peeling mechanism is in driving connection with the motor so as to rotate at a high speed under the driving of the motor; the peeling mechanism comprises a cutter head, the cutter head is coaxially connected with an output shaft of the motor, a plurality of planer tools are installed on the cutter head in a spoke shape, and the blade portions of the planer tools obliquely stretch out of the end face of the side, opposite to the motor, of the cutter head. According to the scheme, a traditional mode that bark is cut through a manual knife and ground through an angle grinder is changed into a bark planing mode, and the problems that the bark cutting efficiency of the manual knife is low and the service life of a bark grinding wheel is short are effectively solved.

Description

Technical Field

[0001] The utility model relates to a device for preventing and controlling diseases of pear trees, in particular to a device for preventing and controlling diseases of branches and trunks of pear trees. Background Art

[0002] Pear rot is a major disease that attacks the branches and trunks of pear trees. It is also called stinky bark disease and often causes the death of large branches, entire plants, or even entire tracts of pear trees. It has a great impact on production and often occurs on the main trunk, main branches, side branches, and twigs. Sometimes the base of the taproot also becomes infected.

[0003] Symptoms are divided into two types: ulcer type and branch dieback type:

[0004] Ulcerative type: The initial lesions are oval or irregular in shape, slightly raised, the cortical tissue becomes loose, and appears water-soaked and wet-rot, reddish brown to dark brown. Protrusions appear on the surface of the lesions, gradually breaking through the epidermis, revealing small black spots. The lesions expand year by year, generally slowly, but can penetrate the cortex to the wood, causing the death of branches and trunks.

[0005] Branch dieback type: mostly occurs on extremely weak twigs of pear trees. The lesions are irregular in shape with unclear edges and spread rapidly, soon surrounding the entire branch, causing it to die and become densely covered with small black spots.

[0006] The pathogen of pear rot is the black rot skin of pear, which overwinters in the lesions of branches and trunks as mycelium, conidia or ascocarps. Conidia are spread by rainwater and invade through wounds.

[0007] When a pear tree in a pear orchard is infected with pear rot, if it is not treated in time, it will quickly spread and cause significant losses to fruit farmers.

[0008] The existing prevention and control method is mainly to scrape the lesions in time when they are small, that is, after scraping off all the bark infected with pear rot, apply medicine (such as 5-10 degree Baume lime sulfur mixture, 1% copper sulfate solution, etc.) to the exposed part of the trunk.

[0009] However, the existing problem is that the bark of pear trees is relatively hard and the connection between the bark and the wood is relatively strong. In order to clean the infected bark, it is often necessary to scrape off part of the wood at the same time. If the method of manual scraping with a knife is adopted, not only is the work intensity high, but the scraping efficiency is also relatively low, resulting in a limited number of pear trees infected with pear rot that fruit farmers can handle in a day. If an angle grinder is used to grind the infected area, the problem is that after the bark is ground by the angle grinder, the powder easily adheres to the grinding wheel, filling the rough surface of the grinding wheel and causing the grinding effect of the grinding wheel to decrease rapidly. That is, when the angle grinder is used to grind the bark, the service life of the grinding wheel is short and the cost is relatively high. Utility Model Content

[0010] The purpose of the present utility model is to provide a device for preventing and controlling diseases of pear tree branches, so as to improve the removal efficiency of pear tree bark during the prevention and control of pear tree branch diseases.

[0011] To achieve the above object, the present utility model provides the following technical solutions:

[0012] A device for preventing and controlling diseases of pear tree branches includes

[0013] a main body including an electric motor;

[0014] a peeling mechanism which is drivingly connected to the electric motor and rotates at a high speed under the drive of the electric motor;

[0015] The peeling mechanism includes a cutter disc which is coaxially connected to the output shaft of the electric motor. A plurality of planing knives are radially mounted on the cutter disc, and the cutting edges of the planing knives extend obliquely from the end face of the cutter disc on the side away from the electric motor.

[0016] Preferably, an installation hole is formed in the center of the cutter disc, and a bolt passes through the installation hole and is screwed onto the output shaft of the electric motor, so that the cutter disc is detachably connected to the output shaft of the electric motor.

[0017] Preferably, a plurality of radially distributed slots are formed in the cutter disc. The slots are arranged obliquely to the end face of the cutter disc. The planing knives are detachably mounted in the slots, and the cutting edges of the planing knives extend obliquely from the side face of the cutter disc away from the electric motor.

[0018] Preferably, the planing knife is slidably inserted into the slot, and clamping grooves are formed at equal intervals on both sides of the planing knife. An outer clamping plate is coaxially arranged at the outer edge of the cutter disc. The outer clamping plate and the end face of the cutter disc form an outer ring groove. A circle of outer clamping rings can be rotatably slid in the outer ring groove. The outer clamping ring has a first tongue plate protruding inward. Rotate the outer clamping ring so that the first tongue plate is clamped into the clamping groove. An inner clamping plate is coaxially arranged inside the cutter disc. The inner clamping plate and the end face of the cutter disc form an annular inner ring groove. A circle of inner clamping rings can be rotatably slid in the inner ring groove. The inner clamping ring has a second tongue plate protruding outward. Rotate the inner clamping ring so that the second tongue plate is clamped into the clamping groove. Screws are inserted through the outer clamping ring and the inner clamping ring and screwed onto the cutter disc.

[0019] Preferably, a chip removal groove is further formed in the cutter disc, and the chip removal groove is communicated with the slot.

[0020] Preferably, a protective cover is further arranged on the main body, and the protective cover shields the rear of the peeling mechanism.

[0021] Compared with the prior art, the beneficial effects of the present utility model are:

[0022] 1. This solution clears the diseased bark of pear trees by planing. Compared with manual knife shaving, it has the advantages of high efficiency and speed. And compared with using a grinding wheel, after the planer knife in this solution shaves off the bark, the bark particles are relatively large and will not adhere to the cutter head. Then the planer knife can also continuously and effectively shave the bark, ensuring the clearing efficiency of the diseased pear tree bark.

[0023] 2. The cutter head and the motor can be separated so that after a problem occurs in the peeling mechanism, the cutter head can be quickly replaced and repaired by disassembling it from the output shaft of the motor.

[0024] 3. The planer knife is installed in the slot so that the planer knife becomes a replaceable part, that is, after the planer knife becomes blunt after long-term use, the solution can quickly resume its working ability by replacing the planer knife.

[0025] 4. The planer knife realizes flexible adjustment of the length extending out of the cutter head through the cooperation between the clamping groove and the inner and outer clamping plates. The planer knife can then flexibly adjust the extending length according to the thickness of the bark to be cleared, greatly improving the clearing efficiency of the diseased bark.

[0026] 5. A chip removal groove is provided so that the planed bark can be discharged from the chip removal groove smoothly, preventing the bark from accumulating between the cutter head and the tree trunk and affecting the subsequent clearing of the bark.

[0027] 6. A protective cover is provided to prevent the chips discharged from the chip removal groove from splashing out and causing harm to the fruit farmers. Description of the Drawings

[0028] Figure 1 is the structural schematic diagram of the present utility model;

[0029] Figure 2 is the cross-sectional view of the present utility model;

[0030] Figure 3 is the structural schematic diagram of the peeling mechanism in the present utility model;

[0031] Figure 4 is Figure 3 the exploded view of;

[0032] Figure 5 is the structural schematic diagram of the planer knife.

[0033] Reference Numerals: 100. Body 110. Motor 200. Peeling Mechanism 210. Cutter Head 211. Slot 212. Chip Removal Groove 220. Outer Snap Ring 221. First Tongue Plate 230. Inner Snap Ring 231. Second Tongue Plate 240. Screw 250. Planer Knife 251. Clamping Groove 260. Outer Clamping Plate 270. Inner Clamping Plate 280. Bolt 300. Protective Cover. Detailed implementation manners

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0035] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0036] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0037] As Figures 1 to 5 shown, a device for preventing and controlling branch diseases of pear trees includes a body 100 that can be held by fruit farmers when removing diseased tree bark. A motor 110 is installed at the front end of the body to serve as the power part for driving the peeling mechanism 200 connected thereto. It should be noted that in this solution, the power supply of the motor can be provided in two forms, namely an external power supply or powered by a battery self-equipped in the body.

[0038] As Figures 2 to 4 shown, in this solution, the peeling mechanism includes a cutter head 210, which is coaxially connected to the output shaft of the motor 110. The cutter head can be driven to rotate rapidly by the rotation of the motor. At the same time, a plurality of planing knives 250 are installed on the cutter head in a spoke shape. The cutting edge of the planing knife extends on the end face of the cutter head on the side facing away from the motor, and there is a certain inclination angle between the cutting edge of the planing knife and the end face of the cutter head, so that when the cutter head rotates, the planing knife can perform a planing operation on the diseased pear tree bark, and then easily remove the bark to be cleaned.

[0039] It should be noted that in the implementation mode, if the cutter head is fixedly connected to the output shaft of the motor in a non-detachable manner, when the cutting edge of the planing knife on the cutter head becomes blunt due to long-term use, the entire motor and the peeling mechanism need to be replaced. Obviously, the usage cost of the above method is relatively high.

[0040] Therefore, a detachable connection between the peeling mechanism 200 and the motor 110 can be adopted to achieve the replaceability of the peeling mechanism. Specifically, the cutter head and the output shaft of the motor can be coaxially placed close to each other, and then a detachable connection between the cutter head and the output shaft of the motor can be achieved by passing a bolt 280 through the cutter head and then screwing it onto the output shaft of the motor 110.

[0041] In addition, it should be noted that even though the overall replaceability function of the peeling mechanism is achieved through the detachable connection between the cutter head and the motor. However, the cost of replacing the entire peeling mechanism is still relatively high. By observation, it can be found that the main vulnerable part in the peeling mechanism is the planing knife 250 that plays a planing role. Therefore, it can be imagined that if the planing knife in the peeling mechanism can achieve the replaceable function, the usage cost of this solution will be further reduced.

[0042] To achieve the above function, as Figure 3 shown, a number of slots 211 are radially arranged on the cutter head. The slots have a certain inclination angle with the end face of the cutter head, so that the cutting edge of the planing knife 250 inserted into the slot forms a certain angle (the preferred angle is 65-75°) with the end face of the cutter head on the side away from the motor after extending out of the slot. At this time, the planing knife still has the function of planing the bark while rotating with the cutter head. It should be noted that after the planing knife is inserted into the slot, there are various ways to stably fix the planing knife on the cutter head, such as inserting a tensioning block into the slot, or passing a bolt through the planing knife and then screwing it onto the cutter head.

[0043] However, it should be noted that the above installation and fixing method of the planing knife on the cutter head still has certain limitations, that is, the extension length of the cutting edge of the planing knife on the cutter head cannot be adjusted flexibly. It should be known that when removing bark of different thicknesses, if the extension length of the cutting edge can be adjusted in time so that the extension length of the cutting edge is adapted to the thickness of the bark (the extension length of the cutting edge is slightly shorter than the bark by 2-4 mm), the number of planing times for the bark will be significantly reduced and the removal efficiency of the bark can be further improved. To achieve the above function of flexibly adjusting the extension length of the planing knife cutting edge, as Figure 2 、 Figure 4As shown, the planer blade is inserted into the slot in a sliding fit. Meanwhile, a number of card slots 251 are equidistantly arranged on both sides of the planer blade. In addition, a number of outer card plates 260 are coaxially arranged at the outer edge of the cutter disc. There is a gap between these outer card plates and the end face of the cutter disc to form an annular outer ring groove, and an outer clamping ring 220 is rotatably installed in this outer ring groove. It should be noted that the inner edge of this outer clamping ring has a radially protruding first tongue plate 221. After the outer card plate is rotated by a certain angle, the first tongue plate can enter the card slot to clamp the planer blade. It should be noted that if the outer card plate is used to implement unilateral clamping of the planer blade, it is inevitable that the planer blade will be deflected due to uneven force. For this reason, there is also an inner clamping ring 230 inside the cutter disc. This inner clamping ring is fixedly connected to the cutter disc, and there is a gap between part of it and the cutter disc to form an annular inner ring groove, as Figure 2 shown. An inner card plate 270 is rotatably installed in this inner ring groove. It should be noted that a radially protruding second tongue plate 231 is provided on the outer edge of this inner card plate. After this tongue plate is rotated by a certain angle, it can enter the card slot on the other side of the planer blade, so as to clamp the other side of the planer blade, and the planer blade is effectively fixed by the inner and outer card plates. It should be noted that because there are multiple card slots on both edges of the planer blade, when adjusting the length of the cutting edge of the planer blade, only the card slots clamped by the inner and outer card plates need to be adjusted, which is convenient and fast. It should be noted that in order to prevent the inner and outer card plates from slipping out of the card slot during the planing process, resulting in the planer blade slipping out of the cutter disc, at least one screw 240 is respectively passed through the inner and outer card plates, and this screw is screwed on the cutter disc to fix the inner and outer card plates to the cutter disc.

[0044] In addition, it should also be noted that during the process of planing the bark, if the planed bark cannot be discharged in time between the cutter disc and the tree trunk, it is easy to hinder the peeling mechanism from penetrating deeper into the bark. For this reason, this solution also opens chip discharge grooves 212 on the cutter disc with the same number as the number of slots 211, and this chip discharge groove is arranged close to the slot and communicates with the slot. Then the bark chips planed by the planer blade will be able to smoothly discharge along the planer blade from the chip discharge groove.

[0045] It should be noted that because the peeling mechanism rotates rapidly driven by the motor, the bark chips entering the chip discharge groove may be thrown out at high speed, and then fly onto the fruit farmer, causing harm to the fruit farmer. For this reason, as Figure 1 shown, a protective cover 300 is also provided on the main body 100. This protective cover covers the peeling mechanism connected to the motor on the main body, so as to block the bark chips discharged from the peeling mechanism.

[0046] Working principle: When it is necessary to remove the diseased bark of pear trees, the fruit farmer holds the main body and then starts the motor on the main body, which in turn drives the cutter head in the peeling mechanism to rotate rapidly. At this time, the cutter head drives the planer knives installed on it to rotate accordingly. Then, when the fruit farmer only needs to bring the planer knives in the peeling mechanism into contact with the diseased pear bark, the planer knives can conveniently and quickly clean the diseased pear bark from the branches of the pear tree. After that, by applying the corresponding medicine to the part where the diseased bark has been removed, the spread of pear canker in the orchard can be effectively prevented and controlled.

[0047] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preventing and controlling branch and trunk diseases of pear trees, characterized in that: include The body (100) includes a motor (110); A peeling mechanism (200) is drivingly connected to the motor (110) so as to rotate at a high speed under the drive of the motor (110); The peeling mechanism (200) comprises a cutter disc (210), the cutter disc (210) being coaxially connected to the output shaft of the motor (110), a plurality of planers (250) being installed in a spoke-like manner on the cutter disc (210), the blades of the planers (250) being inclined and extending out from the end surface of the cutter disc (210) on the side facing away from the motor (110).

2. A device for preventing and controlling branch and trunk diseases of pear trees as claimed in claim 1, characterized in that: A mounting hole is provided at the center of the cutter disc (210), and a bolt (280) passes through the mounting hole and is screwed onto the output shaft of the motor (110), so that the cutter disc (210) and the output shaft of the motor (110) are detachably connected.

3. A device for preventing and controlling branch and trunk diseases of pear trees as claimed in claim 2, characterized in that: The cutter disc (210) is provided with a plurality of slots (211) distributed in a spoke shape, the slots (211) being arranged obliquely to the end surface of the cutter disc (210), the planer (250) being detachably mounted in the slots (211), and the blade of the planer (250) being obliquely extended from the end surface of the cutter disc (210) which is away from the motor (110).

4. A device for preventing and controlling branch and trunk diseases of pear trees as claimed in claim 3, characterized in that: The planer (250) is slidably inserted into the slot (211), and slots (251) are provided at equal intervals on both sides of the planer (250); an outer clamping plate (260) is coaxially arranged on the outer edge of the cutter disc (210); the outer clamping plate (260) and the end surface of the cutter disc (210) form an outer ring groove; a circle of outer clamping ring (220) is rotatably slidably arranged in the outer ring groove; the outer clamping ring (220) has a first tongue plate (221) protruding inwardly; the outer clamping ring (220) is rotated to allow the first tongue plate (221) to be clamped into the slot (251); An inner retaining plate (270) is coaxially arranged on the inner side of the cutter disc (210), and the inner retaining plate (270) and the end face of the cutter disc (210) form an annular inner ring groove, and a circle of inner retaining ring (230) is rotatably slidably arranged in the inner ring groove, and the inner retaining ring (230) has a second tongue plate (231) protruding outward, and the inner retaining ring (230) is rotated to make the second tongue plate (231) snap into the retaining groove (251), and screws (240) that are screwed to the cutter disc (210) are both penetrated by the outer retaining ring (220) and the inner retaining ring (230).

5. A device for preventing and controlling branch and trunk diseases of pear trees as claimed in claim 4, characterized in that: The cutter disc (210) is also provided with a chip removal groove (212), and the chip removal groove (212) is connected to the slot (211).

6. A device for preventing and controlling branch and trunk diseases of pear trees as claimed in claim 5, characterized in that: The main body (100) is also provided with a protective cover (300), and the protective cover (300) is shielded behind the peeling mechanism (200).

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