Handheld laser weeding device

Abstract

A handheld laser weeding device comprises a handheld controller, the tail of the handheld controller is connected with a power line, a rod is fixed to the front side of the handheld controller, a mounting rod is mounted at the front end of the rod, a shell is mounted at the end of the mounting rod, a rotating disc is arranged in the shell, a scanning positioner and a laser generator are arranged below the rotating disc, and a rotating shaft is mounted on the surface of the mounting rod. The surface of the rod body is provided with a sleeve and a handle, the sleeve is adjustably connected with the rod body, the top of the rotating shaft is provided with a gear, the lower part of the rotating shaft is provided with a rotating block, a sliding plate is slidably mounted on the mounting rod, the sliding plate is meshed with the gear, the sliding plate is connected with a pull rope, and the pull rope is lapped on the control sliding rod; the device can actively push aside weed leaves to improve the rhizome exposure degree, thorough weeding is achieved by precisely irradiating roots through laser, meanwhile, the device can be kept consistent with the ground in height, the laser power adjusting frequency is reduced, the structure is flexible, handheld operation is convenient, and different user requirements are met.

Description

Technical Field

[0001] This utility model belongs to the field of laser weeding technology, specifically relating to a handheld laser weeding device. Background Technology

[0002] Currently, in farmland, horticulture, and landscaping management, weed growth not only affects the growing space of crops or plants but also competes for water and nutrients, thereby reducing yield and impacting the landscape effect. Traditional weeding methods mainly include manual weeding, chemical herbicide spraying, and mechanical mowing. Among these, manual weeding is labor-intensive and inefficient; while chemical weeding is more efficient, it easily pollutes soil and water bodies and poses potential harm to the environment and human health; mechanical mowing has the problem of not effectively treating the roots of weeds, which easily leads to regrowth.

[0003] In recent years, with the gradual application of laser technology in agriculture, some weeding equipment has attempted to use lasers to directly target the roots of weeds for physical killing, avoiding pesticide contamination. However, most existing laser weeding equipment is large, towed, or automated, with complex structures and high costs, and is not suitable for small-scale scenarios such as home gardening or manual spot weeding. Furthermore, during the weeding process, the dense foliage of existing devices often obscures the root system, preventing the laser from accurately targeting the roots and thus affecting the weeding effect.

[0004] Furthermore, existing laser weeding devices rely heavily on operator visual inspection or the device's automatic calibration system for positioning, lacking a flexible and adjustable human-machine interface. This results in poor adaptability to operators of different heights or complex terrain. Additionally, some devices cannot effectively maintain a constant laser head height above the ground, necessitating frequent adjustments to laser power output and impacting operational stability. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a handheld laser weeding device that can achieve precise laser action on the roots and stems of weeds and is suitable for manual hand-held operation, so as to solve the problems of positioning difficulties, incomplete weeding and frequent power adjustment in the prior art.

[0006] Compared with the prior art, the beneficial effects of this utility model are:

[0007] By setting up a weed-removing rod and combining it with mechanical transmission structures such as a sliding plate, toothed rod, gear, and rotating shaft, the weed-removing rod can actively remove the leaves covering the roots of weeds, increasing the exposed area of ​​the root and stem region. This improves the accuracy of laser positioning and irradiation, effectively solving the problem in existing technologies where weed leaves obstruct the laser from accurately targeting the roots.

[0008] By setting up a scanning locator and a rotatable turntable structure, and arranging a laser generator on the turntable, the laser generator can adjust its position under the guidance of the scanning signal, accurately aiming at the roots and stems of weeds for burning and weeding. This improves the accuracy and thoroughness of laser weeding and solves the problems of lasers being difficult to locate the roots and stems and incomplete weeding in existing technologies.

[0009] By setting gears and limit bolts at the upper and lower ends of the rotating shaft, and combining them with the contact between the rotating block and the ground, it is ensured that the rotating shaft can only rotate around its own axis during operation. This effectively keeps the height of the housing consistent with the ground, ensuring that the vertical distance between the laser generator and the roots of weeds remains constant. This reduces the frequency of laser power adjustment, improves operational stability, and solves the technical problem in existing devices where frequent changes in height require frequent adjustments to the laser output.

[0010] By setting an adjustable length rod and sleeve structure and using locking bolts to fix the position, the device adapts to the arm span requirements of different operators, improves its ergonomic adaptability, and solves the problems of fixed structure and poor applicability of existing large equipment.

[0011] By setting up a linkage structure between the pull rope and the control slide bar, and using multiple limit rings to guide the wiring path of the pull rope, the operator can control the rotation and reset of the weeding rod with simple hand movements, which improves the operational flexibility and convenience of the device and effectively addresses the difficulty of manual fine weeding in existing technologies. Attached Figure Description

[0012] Figure 1 This is a front view structural diagram of the present utility model;

[0013] Figure 2 This is a schematic diagram of the handle and rod installation structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the internal structure of the shell of this utility model;

[0015] Figure 4 This is a schematic diagram of the rotating shaft mounting structure of this utility model;

[0016] Figure 5 This is a schematic diagram of the connection structure between the slide plate and the toothed rod of this utility model;

[0017] Figure 6 This is a three-dimensional structural diagram of the rotating shaft and weeding rod of this utility model.

[0018] The components represented by each number in the attached diagram are listed below: 1. Handheld controller; 11. Power cord; 12. Rod body; 121. Protrusion; 13. Limiting ring; 14. Mounting rod; 141. Limiting protrusion;

[0019] 2. Sleeve; 21. Locking bolt; 22. Side plate; 23. Handle; 221. Slide groove; 24. Control slide rod;

[0020] 3. Housing; 31. Turntable; 32. Scanning locator; 33. Laser generator;

[0021] 4. Rotating shaft; 41. Rotating block; 42. Weeding rod; 43. Gear; 44. Limiting bolt;

[0022] 5. Skateboard; 51. Crossbar; 52. Gear;

[0023] 6. Spring; 7. Pull rope. Detailed Implementation

[0024] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0025] refer to Figures 1-6 As shown, the handheld laser weeding device includes a handheld controller 1, with a power cord 11 connected to the tail of the handheld controller 1. The power cord 11 is used to connect to an external battery to provide working power. A rod 12 is fixed to the front of the handheld controller 1. The front section of the rod 12 is inclined downward and the rear section is horizontal. The entire rod 12 is made of metal to provide structural strength. Limiting rings 13 are evenly arranged on the outer surface of the rod 12. The limiting rings 13 are used to guide the distribution path of the pull rope 7 and play a limiting role to ensure that the pull rope 7 does not become entangled or deviated during the control process.

[0026] A mounting rod 14 is provided at the front end of the rod body 12. The mounting rod 14 is a hollow metal rod body, which facilitates the layout of internal components. A housing 3 is installed at the end of the mounting rod 14. The housing 3 is a hollow shell with a downward open design to facilitate laser output and visibility of roots and stems. A turntable 31 is rotatably installed inside the housing 3. The turntable 31 is rotated by a motor to adjust the laser output angle. A scanning locator 32 and a laser generator 33 are respectively provided on the lower surface of the turntable 31. The scanning locator 32 is used to scan the position of weed roots and stems in real time and feed back the signal to the processing unit in the handheld controller 1. After receiving the control signal, the laser generator 33 accurately acts on the roots of the weeds to burn and remove weeds.

[0027] A rotating shaft 4 is rotatably mounted on the rear side of the mounting rod 14. Bearing assemblies are provided at both ends of the rotating shaft 4 to achieve smooth rotation. A weeding rod 42 is vertically mounted on the surface of the rotating shaft 4. The weeding rod 42 is a flat metal rod with its free end extending to one side below the housing 3. The weeding rod 42 is used to clear away dense weed leaves to expose the root and stem parts.

[0028] refer to Figure 2 As shown, the rear surface of the rod 12 is symmetrically provided with protrusions 121, which correspond to the grooves on the inner wall of the sleeve 2. The sleeve 2 is slidably installed on the surface of the rod 12. The sleeve 2 is a hollow plastic shell, which facilitates the sliding adjustment of its position on the rod 12. The inner wall of the sleeve 2 is symmetrically provided with grooves that match the protrusions 121 to achieve sliding guidance. A locking bolt 21 is screwed into the bottom of the sleeve 2. After the locking bolt 21 is tightened by the embedded nut, the position of the sleeve 2 on the rod 12 can be fixed, thereby realizing the adjustment of the device length according to the user's arm span.

[0029] refer to Figure 2 As shown, side plates 22 are symmetrically arranged on both sides of the sleeve 2. The two side plates 22 are fixedly installed on the sleeve 2 by screws. The side plates 22 are made of engineering plastic or lightweight aluminum to reduce the weight of the whole machine. A handle 23 is fixed between the top of the two side plates 22. The handle 23 is horizontally arranged and is used as an auxiliary gripping device for non-main operator. A sliding groove 221 is vertically opened on the surface of the side plate 22. A control slide rod 24 is slidably installed between the two sliding grooves 221. The control slide rod 24 is placed parallel to the handle 23 below. The control slide rod 24 can drive the pull rope 7 to move by lifting the finger to realize the rotation control of the grass-pulling rod 42.

[0030] refer to Figures 4-6 As shown, a rotating block 41 is installed at the bottom of the rotating shaft 4. The rotating block 41 adopts a disc-shaped rubber base to contact the ground, which plays a role in stabilizing support and positioning. A gear 43 is set at the top of the rotating shaft 4. The gear 43 meshes with the rack 52 to realize the rotation transmission of the grass-removing rod 42. A limit bolt 44 is screwed on the surface of the rotating shaft 4. The limit bolt 44 cooperates with the limit structure of the rod 12 to restrict the up and down movement of the rotating shaft 4, so that the rotating shaft 4 can only rotate in the axial direction, thereby ensuring that the laser generator 33 is at the same height as the ground.

[0031] refer to Figure 4 and Figure 5 As shown, two sliding plates 5 are symmetrically slidably mounted on the surface of the mounting rod 14. Two crossbars 51 are fixed between the two sliding plates 5. The two crossbars 51 are made of circular metal rods to provide force transmission stability. The two crossbars 51 are respectively placed on both sides of the gear 43. One of the crossbars 51 is a rack 52. The rack 52 achieves stable meshing transmission with the gear 43 through a machined tooth groove structure. The sliding plates 5 are connected as one piece by the crossbars 51. Under the action of the pull rope 7, they slide backward to control the rotating shaft 4.

[0032] refer to Figure 4As shown, the mounting rod 14 is symmetrically provided with limiting protrusions 141. The limiting protrusions 141 cooperate with the edge of the slide plate 5 to limit its sliding range and prevent the slide plate 5 from falling off the track. A spring 6 is sleeved on the surface of the mounting rod 14. The spring 6 is made of high-strength steel wire. One end of the spring 6 is fixed to the outer wall of the mounting rod 14, and the other end contacts the inner wall of the slide plate 5. The spring 6 applies a forward restoring force to the slide plate 5 to ensure that the grass-removing rod 42 can automatically return to the initial position after the control slide rod 24 is released.

[0033] refer to Figure 1 As shown, limit rings 13 are uniformly fixed on the surface of the rod 12. The limit rings 13 are fastened to the rod 12 with a U-shaped buckle structure. The inner hole of the limit rings 13 is used to guide the pull rope 7 to be distributed along the rod 12. The slide plate 5 placed on the rear side is connected to the pull rope 7 through a screw structure. The pull rope 7 is made of high-toughness nylon rope. Its rear end is distributed along multiple limit rings 13 to the upper part of the handheld controller 1 and finally overlaps and connects to the slot of the control slide bar 24 to form a complete mechanical transmission chain structure, which is used to realize the efficient coordination of the grass-removing function and the reset operation.

[0034] The working principle of this utility model is as follows: It can be powered by a storage battery. The end of the power cord 11 is connected to the storage battery to supply power to the handheld controller 1. The power is supplied to the inside of the housing 3 through the control switch. The user holds the handle at the bottom of the handheld controller 1 and holds the handle 23 with the other hand to move it. The position can be adjusted according to the user's arm span and then fixed by the locking bolt 21. The spring 6 applies a forward force to the slide plate 5, so that the angle of the rotating shaft 4 is controlled by the cooperation of the gear 52 and the gear 43. This makes the weeding rod 42 positioned on the lower side of the housing 3. The rotating shaft 4 is used to control the distance between the housing 3 and the ground. The upper and lower parts of the rotating shaft 4 are respectively cooperated by the gear 43 and the limiting bolt 44 to ensure that it can only rotate. This ensures that the distance between the laser generator 33 and the root of the weed is consistent when weeding, thereby reducing the frequency of the laser generator 33 adjusting its power.

[0035] Move the device to the weeds so that the housing 3 is positioned above the weeds and the bottom of the rotating block 41 is on the ground. Then, lift the control lever 24 to pull the pull rope 7. Through the rotation of multiple limit rings 13, the pulling force on the pull rope 7 is applied to the slide plate 5, causing the slide plate 5 to move backward. Then, through the meshing of the gear 52 and the gear 43, the rotating shaft 4 is driven to rotate, causing the weed-removing lever 42 to rotate to the other side of the housing 3, so as to push the weed leaves aside to expose the roots and stems. Then, the scanning locator 32 scans and uses the internal... The motor controls the turntable 31 to rotate, thereby adjusting the position of the laser generator 33 so that the laser generator 33 is placed directly above the weed roots and stems for weeding. After a single weeding operation, the device is lifted and moved, and the lifting force on the control slide 24 is released at the same time, so that the spring 6 can be used to return the weeding rod 42 to its original position to continue the next stage of weeding. This weeding method can pull the dense weed leaves to one side, increasing the exposed area of ​​the roots and stems, so that the laser can directly act on the roots and stems to ensure that the weeds are completely killed.

[0036] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A handheld laser weeding device, comprising a handheld controller (1), characterized in that: The handheld controller (1) is connected to a power cord (11) at its tail. A rod (12) is fixed to the front of the handheld controller (1). The front section of the rod (12) is inclined downward and the rear section is horizontal. The front end of the rod (12) is provided with an installation rod (14), and the end of the installation rod (14) is provided with a housing (3). The housing (3) is open downwards, and a turntable (31) is rotatably installed inside the housing (3). A scanning locator (32) and a laser generator (33) are respectively provided on the lower surface of the turntable (31). A rotating shaft (4) is rotatably mounted on the rear side of the mounting rod (14). A weed-removing rod (42) is vertically arranged on the surface of the rotating shaft (4). The weed-removing rod (42) is placed below the housing (3) and is used to remove weed leaves.

2. The handheld laser weeding device of claim 1, wherein: The rear section of the rod (12) is symmetrically provided with protrusions (121), and a sleeve (2) is slidably installed on the surface of the rod (12). The inner wall of the sleeve (2) is symmetrically provided with grooves that are adapted to the protrusions (121). A locking bolt (21) is screwed into the bottom of the sleeve (2), and the sleeve (2) is locked and fixed by the locking bolt (21).

3. The handheld laser weeding device of claim 2, wherein: The sleeve (2) has symmetrical side plates (22) on both sides. A handle (23) is fixed between the tops of the two side plates (22). The handle (23) is horizontally positioned. A sliding groove (221) is vertically opened on the surface of the side plate (22). A control slide rod (24) is slidably installed between the two sliding grooves (221). The control slide rod (24) is placed parallel to the handle (23) below.

4. The handheld laser weeding device of claim 3, wherein: A rotating block (41) is installed at the bottom of the rotating shaft (4), the rotating block (41) is in contact with the ground, a gear (43) is provided at the top of the rotating shaft (4), and a limiting bolt (44) is screwed onto the surface of the rotating shaft (4). The gear (43) and the limiting bolt (44) are respectively placed above and below the rod body (12).

5. The handheld laser weeding device of claim 4, wherein: Two sliding plates (5) are symmetrically slidably mounted on the surface of the mounting rod (14). Two crossbars (51) are fixed between the two sliding plates (5). The two crossbars (51) are respectively placed on both sides of the gear (43). One of the crossbars (51) is a rack (52), and the rack (52) meshes with the gear (43).

6. The handheld laser weeding device of claim 5, wherein: The mounting rod (14) has symmetrically arranged limit protrusions (141) on its surface. A spring (6) is sleeved on the surface of the mounting rod (14). The spring (6) is in contact with the inner wall of one of the slide plates (5). The spring (6) applies a forward force to the slide plate (5).

7. The handheld laser weeding device of claim 6, wherein: Limiting rings (13) are uniformly fixed on the surface of the rod (12). The slide plate (5) located on the rear side is connected to a pull rope (7). The pull rope (7) is distributed along the rod (12) and passes through multiple limiting rings (13). The rear end of the pull rope (7) is connected to the handheld controller (1). The pull rope (7) is attached to the control slide bar (24).

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