Double-speed adjustable low-noise lithium battery pruning machine

Abstract

This utility model discloses a low-noise lithium-ion brush cutter with dual-speed adjustment, comprising: an operating lever, a connecting plate fixedly installed at one end of the operating lever, a brush-cutting drive plate rotatably installed inside the connecting plate, a hexagonal head fixedly installed on the upper surface of the brush-cutting drive plate, the hexagonal head extending from the upper surface of the connecting plate into a first mounting cylinder and connected to the drive end of a speed-changing mechanism, the first mounting cylinder being fixedly installed on the upper surface of the connecting plate, and the speed-changing mechanism being fixedly installed inside the first mounting cylinder. This application, through the design of the speed-changing mechanism, enables dual-speed switching, allowing for a low-speed, high-torque mode to cut vegetation in one go when dealing with thick grass stems or dense weeds, avoiding repeated cutting due to insufficient power, while the high-speed mode can quickly complete the mowing when working on sparse lawns, significantly shortening working time.

Description

Technical Field

[0001] This utility model relates to the field of garden tool technology, specifically a low-noise lithium battery brush cutter with dual-speed adjustment. Background Technology

[0002] Garden brush cutters are mainly used for mowing lawns at the edges of garden landscapes, especially around tree embankments and along the boundary between lawns and hedge roots, where it is not suitable for lawn mowing machines and only brush cutters can be used. There are also some areas where the terrain is not suitable for lawn mowing machines.

[0003] For example, the national authorized patent announcement number CN208739600U discloses a brush cutter, which includes: a brush cutter lower rod, a trimming head, and a baffle. The trimming head is rotatably mounted on one end of the brush cutter lower rod, and the baffle is arranged around the trimming head, with one end of the baffle connected to the side wall of the brush cutter lower rod. The beneficial effects of this utility model are: by arranging a baffle around the trimming head of the brush cutter, this baffle extends 60° on each side to a 180° baffle compared to previous baffles. The baffle is transparent, so it does not affect the user's vision, allowing the baffle to cover the trimming head and prevent damage to the plants from the non-working area of ​​the trimming head. This makes the brush cutter easier to operate and control, improves work efficiency, and enhances the safety and reliability of the brush cutter.

[0004] However, the brush cutters mentioned above cannot adjust the speed and torque of the trimmer head according to the growth of the lawn. When the lawn grass is thick, weeds are rampant, or there are low shrubs, if the trimmer head always runs at a fixed low speed, the blades will not have enough kinetic energy, resulting in "jamming" or "tearing" phenomena. This will prevent the grass clippings from being cut quickly and require repeated operation to complete the cutting, thus extending the working time. Utility Model Content

[0005] The purpose of this utility model is to provide a low-noise lithium-ion brush cutter with dual-speed adjustment to solve the problem mentioned in the background art that when facing complex lawn conditions such as thick grass stems, weeds, or low shrubs, the brush cutter cannot adjust the speed and torque of the cutting head, resulting in insufficient blade kinetic energy, "jamming" and "tearing" phenomena, leading to low cutting efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A low-noise lithium-ion brush cutter with dual-speed adjustment includes: an operating lever, a connecting plate fixedly mounted at one end of the operating lever, a brush cutting drive plate rotatably mounted inside the connecting plate, a hexagonal head fixedly mounted on the upper surface of the brush cutting drive plate, the hexagonal head extending from the upper surface of the connecting plate into a first mounting cylinder and connected to the drive end of a speed-changing mechanism, the first mounting cylinder being fixedly mounted on the upper surface of the connecting plate, and the speed-changing mechanism being fixedly mounted inside the first mounting cylinder.

[0008] Preferably, a protective cover is fixedly installed on one end of the outer surface of the operating rod, and the protective cover covers one end of the brush-cutting drive disc.

[0009] Preferably, the speed change mechanism includes a first pinion and a first large gear, which are fixedly connected by a rotating column with a gap. The rotating column extends from the upper surface of the first pinion and passes through the mounting frame to be rotatably connected to the piston rod of the electric push rod, so that the electric push rod can push or pull the first pinion and the first large gear together to move vertically up and down in the first mounting cylinder through the piston rod.

[0010] The electric push rod is fixedly installed in the mounting frame and located on the upper surface of the first mounting cylinder. The first small gear and the first large gear are rotatably installed in the first mounting cylinder. A hexagonal cylinder is fixedly installed on the lower surface of the first large gear. The hexagonal cylinder is slidably fitted on the outer surface of the hexagonal head and can slide up and down on the outer surface of the hexagonal head together with the push of the electric push rod.

[0011] Preferably, a second mounting cylinder is connected to one end of the first mounting cylinder, and a second large gear and a second small gear are rotatably mounted inside the second mounting cylinder. The second small gear is fixedly mounted on the lower surface of the second large gear, and the second large gear can mesh with the first small gear, while the second small gear can mesh with the first large gear. The lower surface of the first small gear and the upper surface of the first large gear are both conical.

[0012] Preferably, during the meshing of the second pinion and the first gear, the second gear is positioned at the distance between the first pinion and the first gear, and during the meshing of the second gear and the first pinion, the second pinion is positioned at the distance between the first pinion and the first gear.

[0013] Preferably, the upper surface of the second large gear is fixedly connected to the output shaft of the motor, while the motor is fixedly mounted on the upper surface of the second mounting cylinder.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. Through the design of the control lever, connecting disc, brush cutter drive disc, hexagonal head, and transmission mechanism, during lawn mowing, the operator activates the transmission mechanism via the speed control switch on the control lever. When the grass stems are thick and require high torque, the transmission mechanism can be switched to a low speed to allow the brush cutter drive disc to operate in a low-speed, high-torque mode, ensuring sufficient shearing force for the thick grass stems. When the lawn is sparse or the grass stems are thin, the transmission mechanism can be switched to a high speed. Through the transmission path of increasing speed and decreasing torque, the brush cutter drive disc can achieve rapid rotation and cutting. When facing thick grass stems or dense weeds, the low-speed, high-torque mode can cut the vegetation in one go, avoiding repeated cutting due to insufficient power. When working on sparse lawns, the high-speed mode can quickly complete the mowing, significantly shortening the working time.

[0016] 2. Through the design of the motor, second large gear, second small gear, electric push rod, first small gear, first large gear, and hexagonal cylinder, after the motor starts, the power is transmitted from the output shaft to the second large gear, which drives the second small gear to rotate together. When the operator issues a speed adjustment command through the speed control switch on the operating lever, the electric push rod starts to work: if a low-speed, high-torque mode is required, the piston rod of the electric push rod can pull the rotating column through its full stroke, causing the first small gear and the first large gear to move vertically upward and precisely drive the first large gear to mesh with the second small gear. During the process of the first small gear and the first large gear being pulled vertically upward, the hexagonal cylinder fixedly installed on the lower surface of the first large gear will be pulled upward on the outer surface of the hexagonal head. At this time, the second large gear will be located at the gap between the first small gear and the first large gear, so that the power can be transmitted to the first large gear through the second small gear. The first large gear, which is driven to rotate, can drive the hexagonal head and the brush cutting drive disc on the lower surface to rotate through the hexagonal cylinder, thus realizing the operation of deceleration and torque increase.

[0017] When a high-speed, low-torque mode is required, the piston rod of the electric push rod pushes the rotating column throughout its full stroke, causing the first pinion and the first large gear to move vertically downwards and precisely engage the first pinion with the second large gear. As the first pinion and the first large gear are pulled vertically downwards, the hexagonal cylinder fixedly mounted on the lower surface of the first large gear is pushed down on the outer surface of the hexagonal head. At this time, the second pinion is positioned between the first pinion and the first large gear, allowing power to be transmitted to the first pinion via the second large gear. The rotating first pinion, through the hexagonal cylinder, drives the hexagonal head and the brush cutter drive disc on the lower surface to rotate, thus achieving torque reduction and speed increase. This allows for precise gear engagement through the full stroke of the electric push rod. Whether dealing with the low-speed, high-torque required for thick grass stems or the high-speed, low-torque required for sparse lawns, the power output mode can be switched quickly and accurately, avoiding poor cutting or energy waste caused by power mismatch. This ensures that the brush cutter operates at its best in various working scenarios, significantly improving work efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall side of the present invention.

[0020] Figure 3 This is a schematic diagram of the speed change mechanism of this utility model.

[0021] In the diagram: 1. Operating lever; 101. Connecting plate; 102. Protective cover; 103. First mounting cylinder; 104. Brush cutter drive plate; 105. Hexagonal head; 106. Mounting frame; 107. Second mounting cylinder; 2. Speed ​​change mechanism; 201. Motor; 202. Second large gear; 203. Second small gear; 204. Electric push rod; 205. Rotating column; 206. First small gear; 207. First large gear; 208. Hexagonal cylinder. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-2 As shown, this embodiment provides a low-noise lithium battery brush cutter with dual-speed adjustment, including: an operating lever 1, a connecting plate 101 fixedly installed at one end of the operating lever 1, a brush cutting drive plate 104 rotatably installed inside the connecting plate 101, a hexagonal head 105 fixedly installed on the upper surface of the brush cutting drive plate 104, the hexagonal head 105 extending from the upper surface of the connecting plate 101 into the first mounting cylinder 103 and connected to the drive end of the speed change mechanism 2, the first mounting cylinder 103 being fixedly installed on the upper surface of the connecting plate 101, and the speed change mechanism 2 being fixedly installed inside the first mounting cylinder 103.

[0024] A protective cover 102 is fixedly installed on one end of the outer surface of the operating lever 1, and the protective cover 102 covers one end of the brush cutting drive disc 104.

[0025] Through the design of the operating lever 1, connecting plate 101, brush cutter drive plate 104, hexagonal head 105, and transmission mechanism 2, during lawn mowing, the operator starts the transmission mechanism 2 via the speed control switch on the operating lever 1. When the grass stems are thick and require high torque, the transmission mechanism 2 can be switched to a low speed to allow the brush cutter drive plate 104 to operate in a low-speed, high-torque mode, ensuring that the thick grass stems receive sufficient shearing force. When the lawn is sparse or the grass stems are thin, the transmission mechanism 2 can be switched to a high speed. Through the transmission path of speed increase and torque decrease, the brush cutter drive plate 104 can achieve rapid rotation and cutting. When facing thick grass stems or dense weeds, the low-speed, high-torque mode can cut the vegetation in one go, avoiding repeated cutting due to insufficient power. When working on sparse lawns, the high-speed mode can quickly complete the mowing, significantly shortening the working time.

[0026] like Figure 3 As shown, the transmission mechanism 2 includes a first pinion 206 and a first gear 207. The first pinion 206 and the first gear 207 are fixedly connected by a rotating column 205 with a gap. The rotating column 205 extends to the upper surface of the first pinion 206 and passes through the mounting frame 106 to be rotatably connected to the piston rod of the electric push rod 204. This allows the electric push rod 204 to push or pull the first pinion 206 and the first gear 207 together through the piston rod to move vertically up and down in the first mounting cylinder 103.

[0027] The electric push rod 204 is fixedly installed in the mounting frame 106 and located on the upper surface of the first mounting cylinder 103. The first pinion 206 and the first gear 207 are rotatably installed in the first mounting cylinder 103. A hexagonal cylinder 208 is fixedly installed on the lower surface of the first gear 207. The hexagonal cylinder 208 is slidably fitted on the outer surface of the hexagonal head 105 and can slide up and down on the outer surface of the hexagonal head 105 together with the push of the electric push rod 204.

[0028] The first mounting cylinder 103 is connected to a second mounting cylinder 107 at one end. The second mounting cylinder 107 rotatably mounts a second large gear 202 and a second small gear 203. The second small gear 203 is fixedly mounted on the lower surface of the second large gear 202. The second large gear 202 can mesh with the first small gear 206, while the second small gear 203 can mesh with the first large gear 207. The lower surface of the first small gear 206 and the upper surface of the first large gear 207 are both conical.

[0029] During the meshing of the second pinion 203 with the first large gear 207, the second large gear 202 will be positioned between the first pinion 206 and the first large gear 207. During the meshing of the second large gear 202 with the first pinion 206, the second pinion 203 will be positioned between the first pinion 206 and the first large gear 207.

[0030] The upper surface of the second large gear 202 is fixedly connected to the output shaft of the motor 201, while the motor 201 is fixedly installed on the upper surface of the second mounting cylinder 107.

[0031] Through the design of motor 201, second large gear 202, second small gear 203, electric push rod 204, first small gear 206, first large gear 207, and hexagonal cylinder 208, after motor 201 starts, power is transmitted from the output shaft to the second large gear 202, which in turn drives the second small gear 203 to rotate. When the operator issues a speed adjustment command through the speed control switch on the operating lever 1, the electric push rod 204 starts to work: if a low-speed, high-torque mode is required, the piston rod of the electric push rod 204 can pull the rotating column 205 through its full stroke, causing the first small gear 206 and the first large gear 207 to move vertically upward and precisely drive the first large gear 206. 07 meshes with the second pinion 203. During the process of the first pinion 206 and the first large gear 207 being pulled vertically upward, the hexagonal cylinder 208 fixedly installed on the lower surface of the first large gear 207 will be pulled upward on the outer surface of the hexagonal head 105. At this time, the second large gear 202 will be located at the gap between the first pinion 206 and the first large gear 207, so that the power can be transmitted to the first large gear 207 through the second pinion 203. The first large gear 207, which is driven to rotate, can drive the hexagonal head 105 and the brush cutting drive disk 104 on the lower surface to rotate through the hexagonal cylinder 208, thus realizing the operation of deceleration and torque increase.

[0032] In the high-speed, low-torque mode, the piston rod of the electric push rod 204 pushes the rotating column 205 throughout its full stroke, causing the first pinion 206 and the first large gear 207 to move vertically downwards and precisely engage the first pinion 206 with the second large gear 202. As the first pinion 206 and the first large gear 207 are pulled vertically downwards, the hexagonal cylinder 208 fixedly mounted on the lower surface of the first large gear 207 is pushed down onto the outer surface of the hexagonal head 105. At this time, the second pinion 203 is positioned between the first pinion 206 and the first large gear 207, allowing power to be transmitted through the second large gear. The power is transmitted from 202 to the first pinion 206, which in turn drives the hexagonal head 105 and the brush cutter drive disc 104 on the lower surface to rotate via the hexagonal cylinder 208. This achieves the operation of reducing torque and increasing speed. The electric push rod 204 pushes and pulls the gears throughout its full stroke to achieve precise gear meshing. Whether dealing with the low speed and high torque required for thick grass stems or the high speed and low torque required for sparse lawns, the power output mode can be switched quickly and accurately. This avoids poor cutting or energy waste caused by power mismatch, ensuring that the brush cutter can operate in the best condition under various working scenarios, significantly improving work efficiency.

[0033] Based on the above technical solution, the working steps of this solution are summarized as follows: During lawn mowing, the operator starts the electric push rod 204 via the speed control switch on the operating lever 1. When the operator senses that the grass stems are thick and require high torque, the electric push rod 204 can pull the rotating column 205 through the full stroke of the piston rod. This causes the first pinion 206 and the first large gear 207 to move vertically upwards and precisely drive the first large gear 207 to mesh with the second pinion 203. The first pinion 206 and the first large gear 207 are pulled vertically upwards. During the upward movement, the hexagonal cylinder 208, which is fixedly mounted on the lower surface of the first large gear 207, will be pulled upward by the outer surface of the hexagonal head 105. At this time, the second large gear 202 will be located at the gap between the first small gear 206 and the first large gear 207, so that the power can be transmitted to the first large gear 207 through the second small gear 203. The first large gear 207, which is driven to rotate, can drive the hexagonal head 105 and the brush-cutting drive disk 104 on the lower surface to rotate through the hexagonal cylinder 208, thus realizing the reduction The high-torque operation allows the brush cutter drive disc 104 to operate in a low-speed, high-torque mode, ensuring sufficient shearing force on coarse grass stems. When sparse lawns or thin grass stems are detected, the piston rod of the electric push rod 204 can be operated to push the rotating column 205 through its full stroke. This causes the first pinion 206 and the first large gear 207 to move vertically downwards, precisely engaging the first pinion 206 with the second large gear 202. During the vertical downward movement of the first pinion 206 and the first large gear 207, the first large gear 202... The hexagonal cylinder 208, which is fixedly mounted on the lower surface, will be pushed down on the outer surface of the hexagonal head 105. At this time, the second pinion 203 will be located at the distance between the first pinion 206 and the first large gear 207, so that the power can be transmitted to the first pinion 206 through the second large gear 202. The first pinion 206, which is driven to rotate, can drive the hexagonal head 105 and the cutting drive disk 104 on the lower surface to rotate through the hexagonal cylinder 208, thus realizing the operation of reducing torque and increasing speed, and realizing rapid rotational cutting.

[0034] In summary, this low-noise lithium-ion brush cutter with dual-speed adjustment allows it to cut vegetation in one go when dealing with thick grass stems or dense weeds, avoiding repeated cutting due to insufficient power. When working on sparse lawns, the high-speed mode can quickly complete the trimming, significantly shortening the working time.

[0035] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-noise type of lithium battery pruning machine with double-speed regulation, characterized in that, The utility model provides a brush cutting device, including: The operating rod (1) one end fixed mounting has the connecting disc (101), the cutting brush drive disc (104) is rotatably installed in the connecting disc (101), the upper surface of cutting brush drive disc (104) is fixedly installed with hex head (105), hex head (105) is from the upper surface of connecting disc (101) and is connected with the drive end of speed change mechanism (2) in the first installation cylinder (103) and is rotated, the first installation cylinder (103) is fixedly installed on the upper surface of connecting disc (101), and speed change mechanism (2) is fixedly installed in the first installation cylinder (103).

2. The low-noise brush cutter with double-speed gear according to claim 1, characterized in that: The outer surface one end of operating rod (1) is fixedly installed with protective cover (102), and protective cover (102) covers one end of cutting brush drive disc (104).

3. The low-noise brush cutter with double-speed gear according to claim 1, characterized in that: The speed change mechanism (2) includes first pinion (206) and first gear (207), and the first pinion (206) and first gear (207) are fixedly connected with spacing through rotating column (205), and the rotating column (205) extends at the upper surface of first pinion (206) and is rotated to the installation frame (106) and is rotatably connected with the piston rod of electric push rod (204), so that the electric push rod (204) can push or pull first pinion (206) and first gear (207) vertically moves up and down in the first installation cylinder (103) through the piston rod; Wherein, the electric push rod (204) is fixedly installed in the installation frame (106) and is at the upper surface of first installation cylinder (103), the first pinion (206) and first gear (207) are rotatably installed in the first installation cylinder (103), the lower surface of first gear (207) is fixedly installed with hexagonal cylinder (208), and hexagonal cylinder (208) is sleeved at the outer surface of hex head (105) and can slide up and down on the outer surface of hex head (105) with the pushing of electric push rod (204).

4. The low-noise brush cutter with double-speed gear according to claim 3, characterized in that: The first installation cylinder (103) one end is connected and is installed with the second installation cylinder (107), the second installation cylinder (107) is rotatably installed with second gear (202) and second pinion (203), the second pinion (203) is fixedly installed at the lower surface of second gear (202), and the second gear (202) can be engaged with first pinion (206), and the second pinion (203) can be engaged with first gear (207), and the lower surface of first pinion (206) and the upper surface of first gear (207) are both conical.

5. The low-noise brush cutter with double-speed gear according to claim 4, characterized in that: In the process that the second pinion (203) engages with the first gear wheel (207), the second gear wheel (202) is in the spaced position between the first pinion (206) and the first gear wheel (207), and in the process that the second gear wheel (202) engages with the first pinion (206), the second pinion (203) is in the spaced position between the first pinion (206) and the first gear wheel (207).

6. The low-noise brush cutter with double-speed gear according to claim 5, characterized in that: The upper surface of the second gear wheel (202) is fixedly connected with the output shaft of the motor (201), and the motor (201) is fixedly installed at the upper surface of the second mounting cylinder (107).

Images