Handheld weeding machine with replaceable tail end

Abstract

The invention discloses a handheld weeding machine with a replaceable tail end, and belongs to the technical field of weeding machines, the handheld weeding machine comprises a handheld device, the handheld device is used for being taken by a user during weeding, the handheld device is provided with an operation device, the operation device is used for conducting weeding operation, and the operation device is provided with a placing device; and the placing device is used for placing the tail end for replacement. The weeding tail end and the branch cutting tail end can be rapidly replaced, and when the tail ends are not used, the tail ends can be fixedly placed on the placing device and do not need to be additionally scattered and placed, so that the use is convenient; when a weeding tail end or a branch cutting tail end is placed on the placing device, a saw blade mounting block or a mowing mounting block can press a protective cover, so that a pressing column is prevented from being mistakenly touched in the mowing operation process to cause danger, and the safety is improved; according to the handheld device provided by the invention, the motor can be started only after the safety switch is pressed and the working switch is pressed, so that personal injury caused by mistakenly touching the working switch is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of weed cutters, in particular to a handheld weed cutter with replaceable ends. Background Art

[0002] A lawn mower is a device used to remove weeds from lawns or fields, and is widely used in the fields of gardening, agriculture, and landscape maintenance. According to different usage requirements and technical characteristics, lawn mowers can be divided into handheld lawn mowers, tractor lawn mowers, self-propelled lawn mowers, etc. Among them, handheld lawn mowers are small in size, light in weight, flexible in operation, and can easily enter small or complex areas, such as flower beds, around trees, and edges. Most handheld lawn mowers are simple in design, and even inexperienced users can quickly get started, which is suitable for home users and small gardening. The handheld lawn mowers in the prior art are usually easy to use, but their weeding tips are usually not replaceable, and they cannot effectively remove some harder branches. At the same time, because they are for home use, their tips must be easy to replace and need to have high safety. Summary of the invention

[0003] In view of the above technical problems, the technical solution adopted by the present invention is: a handheld weeder with replaceable end, comprising a handheld device, the handheld device comprising a lower connecting block, the handheld device is used for a user to pick up when weeding, the handheld device is provided with an operating device, the operating device comprises an operating shell, a motor shell is fixedly mounted on the operating shell, the motor shell is fixedly mounted to the lower connecting block, the operating device is used for weeding operations, the operating device is provided with a placing device, the placing device comprises a temporary placing block, the temporary placing block is fixedly mounted on the operating shell, and the placing device is used for placing the end for replacement.

[0004] Furthermore, the handheld device includes an inner rod installed on the lower connecting block by rotating the adjusting screw. After loosening the adjusting screw, the angle between the lower connecting block and the inner rod can be adjusted. After the angle adjustment is completed, the adjusting screw is tightened to fix the lower connecting block and the inner rod. An outer rod is slidably installed outside the inner rod, and a handle with an adjustable position is provided on the outer rod.

[0005] Furthermore, a snap mechanism is provided on the outer rod, and the snap mechanism includes an adjusting sleeve fixedly installed on the outer rod, an inner column fixedly installed in the adjusting sleeve, a cam eccentrically rotatably installed on the inner column, a locking buckle fixedly installed on the cam, a clamping slider slidably installed in the adjusting sleeve, a sliding groove is provided on the inner rod, the clamping slider slides in the sliding groove of the inner rod, and the cam rotates around the inner column to drive the clamping slider to slide in the sliding groove of the inner rod, thereby realizing the fixation of the outer rod and the inner rod.

[0006] Furthermore, a handheld end is fixedly mounted on the outer rod, and a working switch and a safety switch are arranged on the handheld end.

[0007] In the initial state, the locking buckle drives the cam to press the clamping slider into the sliding groove of the inner rod. At this time, the inner rod and the outer rod are fixed. When the sliding of the inner rod and the outer rod needs to be adjusted, the locking buckle is manually rotated to make the cam rotate around the inner column. The clamping slider is no longer pressed tightly in the sliding groove of the inner rod. At this time, the inner rod can be manually slid along the outer rod to adjust the extension amount of the inner rod relative to the outer rod. Then the locking buckle is rotated to make the cam clamp the clamping slider into the sliding groove of the inner rod again.

[0008] When in use, first press the safety switch, then press the working switch to control the motor to start rotating, to prevent the motor from being started by accidentally touching the working switch and causing personal injury. When in use, hold the handheld end with one hand and the handle with the other hand, and the position of the handle can be adjusted.

[0009] Furthermore, the operating device includes a protective shell fixedly installed on the operating shell, a protective cover is rotatably installed on the operating shell, a mounting shell is fixedly installed under the operating shell, a motor is fixedly installed on the operating shell, a motor gear is fixedly installed on the motor shaft of the motor, a transfer large gear is rotatably installed in the operating shell, a transfer small gear is fixedly installed on the transfer large gear, a rotating drum is rotatably installed in the operating shell, a working gear is fixedly installed on the rotating drum, the working gear is meshed with the transfer small gear, and the transfer large gear is meshed with the motor gear.

[0010] Furthermore, a locking mechanism is provided in the rotating drum, and the locking mechanism includes a pressing column slidably installed in the rotating drum, a pressing spring is provided between the pressing column and the rotating drum, an unlocking frame is fixedly installed on the pressing column, two locking blocks are slidably installed in the rotating drum, an inclined groove block is fixedly installed on the locking block, an inclined groove is provided on the inclined groove block, a guide column is fixedly installed on the unlocking frame, and the guide column slides in the inclined groove of the inclined groove block.

[0011] Furthermore, a branch cutting end is arranged in the mounting shell, and the branch cutting end includes a saw blade mounting block, on which a saw blade is fixedly mounted, and the saw blade mounting block rotates along the mounting shell, and two grooves are arranged on the inner wall of the saw blade mounting block. After the installation is completed, the two locking blocks are inserted into the two grooves on the inner wall of the saw blade mounting block.

[0012] When performing branch and leaf removal operations, the rotation of the motor drives the motor gear to rotate, thereby driving the transfer large gear and the transfer small gear to rotate, thereby driving the working gear and the rotating drum to rotate, and then driving the saw blade mounting block and the saw blade to rotate through the locking block, and the branches and the like are removed by the saw blade.

[0013] When the cutting end needs to be removed, first open the protective cover and press the pressing column downward. The pressing spring is compressed, the unlocking frame descends, and the guide column slides in the inclined slot of the inclined slot block, driving the locking block and the inclined slot block to slide inward along the rotating drum, so that the locking block leaves the groove of the saw blade mounting block. At this time, the saw blade mounting block and the saw blade can be removed. When the weeding end needs to be used, the mowing mounting block is installed in the guide mounting shell so that the two grooves on the mowing mounting block are aligned with the locking block. At this time, the pressing column is released, the pressing spring rebounds, driving the unlocking frame to rise, thereby driving the inclined slot block and the locking block to slide outward, and the locking block is stuck in the two grooves of the mowing mounting block, so that the installation of the weeding end is realized. At this time, the weeding operation is carried out by rotating the mowing mounting block and the mowing wire rope.

[0014] Furthermore, the placement device comprises two inner slides slidably mounted in the temporary placement block, an inner clamping block and an unlocking clamping block are fixedly mounted on the inner slides, and two inner springs are arranged between the two inner slides.

[0015] Furthermore, a weeding end is placed on the temporary placement block, and the weeding end includes a mowing installation block, a mowing wire rope is provided on the mowing installation block, and two grooves are provided on the inner wall of the mowing installation block. The grooves on the inner wall of the mowing installation block cooperate with the inner card block or the locking block, and the grooves on the inner wall of the saw blade installation block cooperate with the inner card block or the locking block. When the mowing installation block is placed on the temporary placement block, the inner card block extends into the two grooves on the inner wall of the mowing installation block.

[0016] Furthermore, when the mowing installation block or the saw blade installation block is placed on the temporary placement block, the mowing installation block or the saw blade installation block presses the protective cover so that the protective cover cannot be opened.

[0017] When the mowing end is in use, the weeding end is placed on the temporary placement block and fixed by the inner card block. When the weeding end needs to be removed, the two unlocking blocks are manually pressed to make the inner slide slide inward, and the inner spring is compressed, so that the inner card block leaves the groove of the mowing mounting block. At this time, the mowing mounting block and the mowing wire rope can be removed, and the placement of the weeding end and the removal of the mowing end are the same.

[0018] Compared with the prior art, the advantages of the present invention are as follows: (1) the weeding end and the branch cutting end provided by the present invention can be quickly replaced, and when the end is not in use, it can be fixed on the placement device without the need for additional scattered placement, which is convenient to use; (2) when the weeding end or the branch cutting end provided by the present invention is placed on the placement device, the saw blade mounting block or the mowing mounting block will press down the protective cover to prevent the pressing column from being accidentally touched during the mowing operation, thereby improving safety; (3) the handheld device provided by the present invention can only start the motor after pressing the safety switch and then pressing the working switch to prevent accidental touching of the working switch and causing personal injury. At the same time, the outer rod and the inner rod can be telescopically adjusted, and the position of the handle can also be adjusted. The angle between the inner rod and the lower connecting block can also be adjusted. It has good adaptability and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the structure of the handheld device of the present invention.

[0021] Figure 3 It is a schematic diagram of the buckle mechanism structure of the present invention.

[0022] Figure 4 The structure of the working device of the present invention is shown in FIG. Figure 1 .

[0023] Figure 5 The structure of the working device of the present invention is shown in FIG. Figure 2 .

[0024] Figure 6 It is a schematic diagram of the cooperation between the locking mechanism of the present invention and the branch cutting end.

[0025] Figure 7 The structure of the placement device of the present invention is shown in FIG. Figure 1 .

[0026] Figure 8 The structure of the placement device of the present invention is shown in FIG. Figure 2 .

[0027] Fig. 9 It is a schematic diagram of the cooperation between the placement device of the present invention and the mowing end.

[0028] Reference numerals: 101-lower connecting block; 102-inner rod; 103-adjusting screw; 104-outer rod; 105-handle; 106-handheld end; 107-working switch; 108-safety switch; 109-adjusting sleeve; 110-locking buckle; 111-inner column; 112-clamping slider; 113-cam; 201-operating housing; 202-motor housing; 203-protective cover; 204-protective housing; 205-mounting housing; 206-saw blade; 207-saw blade mounting block; 208-motor; 209-motor gear; 210-transfer large gear; 211-transfer small gear; 212-operating gear; 213-rotating drum; 214-pressing column; 215-pressing spring; 216-unlocking frame; 217-slot block; 218-locking block; 219-guide column; 301-temporary placement block; 302-mowing installation block; 303-mowing wire rope; 304-unlocking block; 305-inner spring; 306-inner slide; 307-inner block. DETAILED DESCRIPTION

[0029] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0030] Example: Reference Figure 1-Figure 9 A handheld weeder with a replaceable end, comprising a handheld device, the handheld device comprising a lower connecting block 101, the handheld device is used for a user to pick up when weeding, an operating device is provided on the handheld device, the operating device comprises an operating shell 201, a motor shell 202 is fixedly mounted on the operating shell 201, the motor shell 202 is fixedly mounted to the lower connecting block 101, the operating device is used for weeding operations, a placing device is provided on the operating device, the placing device comprises a temporary placing block 301, the temporary placing block 301 is fixedly mounted on the operating shell 201, and the placing device is used for placing an end for replacement.

[0031] like Figure 2 , Figure 3 As shown, the handheld device includes an inner rod 102 rotatably mounted on a lower connecting block 101 by means of an adjusting screw 103. After loosening the adjusting screw 103, the angle between the lower connecting block 101 and the inner rod 102 can be adjusted. After the angle adjustment is completed, the adjusting screw 103 is tightened to fix the lower connecting block 101 and the inner rod 102. An outer rod 104 is slidably mounted outside the inner rod 102, and an adjustable handle 105 is provided on the outer rod 104.

[0032] like Figure 2 , Figure 3As shown, a snap mechanism is provided on the outer rod 104, and the snap mechanism includes an adjusting sleeve 109 fixedly installed on the outer rod 104, an inner column 111 is fixedly installed in the adjusting sleeve 109, a cam 113 is eccentrically installed on the inner column 111, a locking buckle 110 is fixedly installed on the cam 113, a clamping slider 112 is slidably installed in the adjusting sleeve 109, a sliding groove is provided on the inner rod 102, the clamping slider 112 slides in the sliding groove of the inner rod 102, and the cam 113 rotates around the inner column 111, driving the clamping slider 112 to slide in the sliding groove of the inner rod 102, thereby realizing the fixation of the outer rod 104 and the inner rod 102.

[0033] like Figure 2 , Figure 3 As shown, a handheld end 106 is fixedly mounted on the outer rod 104 , and a working switch 107 and a safety switch 108 are provided on the handheld end 106 .

[0034] In the initial state, the locking buckle 110 drives the cam 113 to press the clamping slider 112 into the sliding groove of the inner rod 102. At this time, the inner rod 102 is fixed to the outer rod 104. When the sliding of the inner rod 102 and the outer rod 104 needs to be adjusted, the locking buckle 110 is manually rotated to make the cam 113 rotate around the inner column 111, and the clamping slider 112 is no longer pressed tightly in the sliding groove of the inner rod 102. At this time, the inner rod 102 can be manually slid along the outer rod 104 to adjust the extension amount of the inner rod 102 relative to the outer rod 104, and then the locking buckle 110 is rotated to make the cam 113 clamp the clamping slider 112 into the sliding groove of the inner rod 102 again.

[0035] When in use, first press the safety switch 108, and then press the working switch 107 to control the motor 208 to start rotating, to prevent the motor 208 from being started by accidentally touching the working switch 107 and causing personal injury. When in use, hold the handheld end 106 with one hand and the handle 105 with the other hand, and the position of the handle 105 can be adjusted.

[0036] like Figure 4-Figure 6 As shown, the working device includes a protective shell 204 fixedly installed on the working shell 201, a protective cover 203 is rotatably installed on the working shell 201, a mounting shell 205 is fixedly installed below the working shell 201, a motor 208 is fixedly installed on the working shell 201, a motor gear 209 is fixedly installed on the motor shaft of the motor 208, a transfer large gear 210 is rotatably installed in the working shell 201, a transfer small gear 211 is fixedly installed on the transfer large gear 210, a rotating drum 213 is rotatably installed in the working shell 201, a working gear 212 is fixedly installed on the rotating drum 213, the working gear 212 is meshed with the transfer small gear 211, and the transfer large gear 210 is meshed with the motor gear 209.

[0037] like Figure 4-Figure 6As shown, a locking mechanism is provided in the rotating drum 213, and the locking mechanism includes a pressing column 214 slidably installed in the rotating drum 213, a pressing spring 215 is provided between the pressing column 214 and the rotating drum 213, an unlocking frame 216 is fixedly installed on the pressing column 214, two locking blocks 218 are slidably installed in the rotating drum 213, an inclined groove block 217 is fixedly installed on the locking block 218, an inclined groove is provided on the inclined groove block 217, a guide column 219 is fixedly installed on the unlocking frame 216, and the guide column 219 slides in the inclined groove of the inclined groove block 217.

[0038] like Figure 4-Figure 6 As shown, a branch cutting end is arranged in the mounting shell 205, and the branch cutting end includes a saw blade mounting block 207, on which a saw blade 206 is fixedly mounted. The saw blade mounting block 207 rotates along the mounting shell 205, and two grooves are arranged on the inner wall of the saw blade mounting block 207. After the installation is completed, the two locking blocks 218 are inserted into the two grooves on the inner wall of the saw blade mounting block 207.

[0039] When performing branch and leaf removal operations, the motor 208 rotates to drive the motor gear 209 to rotate, thereby driving the transfer large gear 210 and the transfer small gear 211 to rotate, thereby driving the working gear 212 and the rotating drum 213 to rotate, and then driving the saw blade mounting block 207 and the saw blade 206 to rotate through the locking block 218, and the branches and the like are removed by the saw blade 206.

[0040] When the mowing end needs to be removed, first open the protective cover 203, press down the pressing column 214, the pressing spring 215 is compressed, the unlocking frame 216 descends, and the guide column 219 slides in the inclined groove of the inclined groove block 217, driving the locking block 218 and the inclined groove block 217 to slide inward along the rotating cylinder 213, so that the locking block 218 leaves the groove of the saw blade mounting block 207. At this time, the saw blade mounting block 207 and the saw blade 206 can be removed. When the mowing end needs to be used, the mowing end is removed. The mounting block 302 is installed in the guide mounting shell 205 so that the two grooves on the mowing mounting block 302 are aligned with the locking block 218. At this time, the pressing column 214 is released, and the pressing spring 215 rebounds, driving the unlocking frame 216 to rise, thereby driving the inclined slot block 217 and the locking block 218 to slide outward, and the locking block 218 is inserted into the two grooves of the mowing mounting block 302 to achieve the installation of the weeding end. At this time, the weeding operation is performed by rotating the mowing mounting block 302 and the mowing wire rope 303.

[0041] like Figure 7-Figure 9 As shown, the placement device includes two inner slides 306 slidably installed in the temporary placement block 301 , an inner clamping block 307 and an unlocking clamping block 304 are fixedly installed on the inner slides 306 , and two inner springs 305 are arranged between the two inner slides 306 .

[0042] like Figure 7-Figure 9As shown, a weeding end is placed on the temporary placement block 301, and the weeding end includes a mowing installation block 302, and a mowing wire rope 303 is arranged on the mowing installation block 302. Two grooves are arranged on the inner wall of the mowing installation block 302, and the grooves on the inner wall of the mowing installation block 302 cooperate with the inner clamping block 307 or the locking block 218, and the grooves on the inner wall of the saw blade mounting block 207 cooperate with the inner clamping block 307 or the locking block 218. When the mowing installation block 302 is placed on the temporary placement block 301, the inner clamping block 307 extends into the two grooves on the inner wall of the mowing installation block 302.

[0043] like Figure 7-Figure 9 As shown, when the mowing installation block 302 or the saw blade installation block 207 is placed on the temporary placement block 301, the mowing installation block 302 or the saw blade installation block 207 presses the protection cover 203 so that the protection cover 203 cannot be opened.

[0044] When the mowing end is in use, the weeding end is placed on the temporary placement block 301 and fixed by the inner clamping block 307. When the weeding end needs to be removed, the two unlocking clamping blocks 304 are manually pressed to make the inner slide 306 slide inward, and the inner spring 305 is compressed, so that the inner clamping block 307 leaves the groove of the mowing mounting block 302. At this time, the mowing mounting block 302 and the mowing wire rope 303 can be removed. The placement of the weeding end and the removal of the mowing end are similar.

[0045] The working principle of a handheld lawn mower with replaceable end disclosed by the present invention is as follows: in the initial state, the locking buckle 110 drives the cam 113 to press the clamping slider 112 into the slide groove of the inner rod 102. At this time, the inner rod 102 is fixed to the outer rod 104. When it is necessary to adjust the sliding of the inner rod 102 and the outer rod 104, the locking buckle 110 is manually rotated to make the cam 113 rotate around the inner column 111, and the clamping slider 112 is no longer pressed into the slide groove of the inner rod 102. At this time, the inner rod 102 can be manually slid along the outer rod 104 to adjust the extension amount of the inner rod 102 relative to the outer rod 104, and then the locking buckle 110 is rotated to make the cam 113 clamp the clamping slider 112 into the slide groove of the inner rod 102 again. When in use, first press the safety switch 108, then press the working switch 107 to control the motor 208 to start rotating, to prevent the motor 208 from being started by accidentally touching the working switch 107, causing personal injury. When in use, one hand holds the handheld end 106, and the other hand holds the handle 105, and the position of the handle 105 can be adjusted. When removing branches and leaves, the motor 208 rotates to drive the motor gear 209 to rotate, thereby driving the transfer large gear 210 and the transfer small gear 211 to rotate, thereby driving the working gear 212 and the rotating drum 213 to rotate, and then driving the saw blade mounting block 207 and the saw blade 206 to rotate through the locking block 218, and the branches and the like are removed by the saw blade 206. When the mowing end needs to be removed, first open the protective cover 203, press down the pressing column 214, the pressing spring 215 is compressed, the unlocking frame 216 descends, and the guide column 219 slides in the inclined groove of the inclined groove block 217, driving the locking block 218 and the inclined groove block 217 to slide inward along the rotating cylinder 213, so that the locking block 218 leaves the groove of the saw blade mounting block 207. At this time, the saw blade mounting block 207 and the saw blade 206 can be removed. When the mowing end needs to be used, the mowing end is removed. The mounting block 302 is installed in the guide mounting shell 205 so that the two grooves on the mowing mounting block 302 are aligned with the locking block 218. At this time, the pressing column 214 is released, and the pressing spring 215 rebounds, driving the unlocking frame 216 to rise, thereby driving the inclined slot block 217 and the locking block 218 to slide outward, and the locking block 218 is inserted into the two grooves of the mowing mounting block 302 to achieve the installation of the weeding end. At this time, the weeding operation is performed by rotating the mowing mounting block 302 and the mowing wire rope 303. When the mowing end is in use, the weeding end is placed on the temporary placement block 301 and fixed by the inner clamping block 307. When the weeding end needs to be removed, the two unlocking clamping blocks 304 are manually pressed to make the inner slide 306 slide inward, and the inner spring 305 is compressed, so that the inner clamping block 307 leaves the groove of the mowing mounting block 302. At this time, the mowing mounting block 302 and the mowing wire rope 303 can be removed. The placement of the weeding end and the removal of the mowing end are similar.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A handheld weeder with replaceable tips, comprising a handheld device, characterized in that: The handheld device comprises a lower connecting block (101), the handheld device is used for a user to pick up the handheld device when weeding, an operating device is arranged on the handheld device, the operating device comprises an operating shell (201), a motor shell (202) is fixedly mounted on the operating shell (201), the motor shell (202) is fixedly mounted on the lower connecting block (101), the operating device is used for weeding operations, a placement device is arranged on the operating device, the placement device comprises a temporary placement block (301), the temporary placement block (301) is fixedly mounted on the operating shell (201), and the placement device is used to place a terminal for replacement.

2. A handheld weeder with replaceable tips according to claim 1, characterized in that: The handheld device comprises an inner rod (102) mounted on a lower connecting block (101) and rotatable by means of an adjusting screw (103); the angle between the lower connecting block (101) and the inner rod (102) can be adjusted by loosening the adjusting screw (103); after the angle adjustment is completed, the adjusting screw (103) is tightened to fix the lower connecting block (101) and the inner rod (102); an outer rod (104) is slidably mounted outside the inner rod (102); and a handle (105) whose position can be adjusted is provided on the outer rod (104).

3. A handheld weeder with replaceable tip according to claim 2, characterized in that: The outer rod (104) is provided with a buckle mechanism, and the buckle mechanism comprises an adjusting sleeve (109) fixedly mounted on the outer rod (104), an inner column (111) fixedly mounted in the adjusting sleeve (109), a cam (113) eccentrically rotatably mounted on the inner column (111), a locking buckle (110) fixedly mounted on the cam (113), a clamping slider (112) slidably mounted in the adjusting sleeve (109), a slide groove is provided on the inner rod (102), the clamping slider (112) slides in the slide groove of the inner rod (102), and the cam (113) rotates around the inner column (111), driving the clamping slider (112) to slide in the slide groove of the inner rod (102), thereby achieving the fixing of the outer rod (104) and the inner rod (102).

4. A handheld weeder with replaceable tip according to claim 2, characterized in that: A handheld end (106) is fixedly mounted on the outer rod (104), and a working switch (107) and a safety switch (108) are arranged on the handheld end (106).

5. A handheld weeder with replaceable tip according to claim 1, characterized in that: The operating device comprises a protective shell (204) fixedly mounted on an operating shell (201); a protective cover (203) is rotatably mounted on the operating shell (201); a mounting shell (205) is fixedly mounted below the operating shell (201); a motor (208) is fixedly mounted on the operating shell (201); a motor gear (209) is fixedly mounted on the motor shaft of the motor (208); a transfer gear (210) is rotatably mounted in the operating shell (201); a transfer pinion (211) is fixedly mounted on the transfer gear (210); a rotating drum (213) is rotatably mounted in the operating shell (201); an operating gear (212) is fixedly mounted on the rotating drum (213); the operating gear (212) is meshed with the transfer pinion (211); and the transfer gear (210) is meshed with the motor gear (209).

6. A handheld weeder with replaceable tips according to claim 5, characterized in that: A locking mechanism is arranged in the rotating drum (213), and the locking mechanism comprises a pressing column (214) slidably mounted in the rotating drum (213), a pressing spring (215) is arranged between the pressing column (214) and the rotating drum (213), an unlocking frame (216) is fixedly mounted on the pressing column (214), two locking blocks (218) are slidably mounted in the rotating drum (213), an inclined groove block (217) is fixedly mounted on the locking block (218), an inclined groove is arranged on the inclined groove block (217), a guide column (219) is fixedly mounted on the unlocking frame (216), and the guide column (219) slides in the inclined groove of the inclined groove block (217).

7. A handheld weeder with replaceable tips according to claim 6, characterized in that: A branch cutting end is arranged in the mounting shell (205), and the branch cutting end comprises a saw blade mounting block (207), a saw blade (206) is fixedly mounted on the saw blade mounting block (207), the saw blade mounting block (207) rotates along the mounting shell (205), and two grooves are arranged on the inner wall of the saw blade mounting block (207). After the installation is completed, the two locking blocks (218) are inserted into the two grooves on the inner wall of the saw blade mounting block (207).

8. A handheld weeder with replaceable tips according to claim 6, characterized in that: The placement device comprises two inner slides (306) slidably mounted in the temporary placement block (301), an inner clamping block (307) and an unlocking clamping block (304) being fixedly mounted on the inner slides (306), and two inner springs (305) are arranged between the two inner slides (306).

9. A handheld weeder with replaceable tip according to claim 8, characterized in that: A weeding end is placed on the temporary placement block (301), and the weeding end comprises a mowing installation block (302). A mowing wire rope (303) is arranged on the mowing installation block (302). Two grooves are arranged on the inner wall of the mowing installation block (302). The grooves on the inner wall of the mowing installation block (302) cooperate with an inner clamping block (307) or a locking block (218). The grooves on the inner wall of the saw blade installation block (207) cooperate with the inner clamping block (307) or the locking block (218). When the mowing installation block (302) is placed on the temporary placement block (301), the inner clamping block (307) extends into the two grooves on the inner wall of the mowing installation block (302).

10. A handheld weeder with replaceable tips according to claim 9, characterized in that: When the mowing installation block (302) or the saw blade installation block (207) is placed on the temporary placement block (301), the mowing installation block (302) or the saw blade installation block (207) presses the protective cover (203), so that the protective cover (203) cannot be opened.

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