Lawn mower

Abstract

The invention discloses a mower, and belongs to the technical field of mowers. A grass inlet is fixedly formed in the front end of the machine body, a protection ring is fixedly connected to the inner wall of the bottom of the machine body, a rotating cavity is fixedly formed in the upper end in the machine body, a grass passing opening is fixedly formed in the rear portion of the rotating cavity, and a top cover is fixedly connected to the top of the machine body. A weed conveying mechanism and a mowing mechanism are fixedly arranged at the bottom of the power mechanism, and a weed box is fixedly installed on the rear portion of the machine body. By arranging the mowing mechanism, when the rotating cutter head makes contact with hard objects such as iron wires, the rotating cutter head and the transmission shaft form a speed difference due to collision, within the extreme time, the brake connecting disc drives the rotating cutter head to rapidly brake, meanwhile, the rotating cutter head moves upwards by a certain distance, the flat cutter is separated from the guide clamping teeth, and the flat cutter is aligned to the middle of the protection ring, so that the mowing effect is achieved. The probability that the damaged and broken flat cutter collides with the protection ring is increased, and the safety of the mower is improved. The lawn trimmer is mainly used for trimming lawns.

Description

Technical Field

[0001] The present invention belongs to the technical field of lawn mowers, and in particular, relates to a lawn mower. Background Art

[0002] A lawn mower is a mechanical device that can trim grass, grassland and other vegetation. It can create a clean and orderly green space for lawns, courtyards, parks and other places, and improve the overall landscape effect. With the continuous development of technology, lawn mowers gradually have better trimming performance and provide users with safer operation guarantees.

[0003] A Chinese patent with publication number "CN118318596A" discloses an emergency protection device for an intelligent lawn mower, including a lawn mower body, an emergency stop switch button, and a pedal assembly. The pedal assembly includes a pedal below the rear end of the lawn mower body, a first column is fixedly provided on the top of the pedal, the first column extends to the top of the lawn mower body, and is also provided with a pressure plate corresponding to the emergency stop switch button and used to press the emergency stop switch button. The emergency stop can be achieved by pressing the emergency stop switch button by foot, without bending over and reaching out to operate, which is convenient and easy to use.

[0004] During later use, the device also had the following problems: when the lawn mower's cutter cuts hard objects such as stones, the cutter is easily damaged and broken, and thrown out due to the high-speed rotation of the blade, posing a safety hazard to the user. In an emergency, the user cannot turn off the lawn mower immediately by stepping on the pressure plate. Summary of the invention

[0005] The technical problem to be solved by the present invention is: to overcome the shortcomings of the prior art and provide a lawn mower, which, by setting a lawn mowing mechanism, when a rotating cutter disc contacts a hard object such as an iron wire, a speed difference is formed between the rotating cutter disc and the transmission shaft due to the collision. In an extreme time, the brake connecting disc drives the rotating cutter disc to stop quickly, and at the same time, the rotating cutter disc moves upward for a distance, so that the flat cutter is separated from the guide teeth, and the flat cutter is aligned with the middle of the protective ring, thereby increasing the probability that the damaged or broken flat cutter hits the protective ring, thereby improving the safety of the lawn mower.

[0006] The described lawn mower comprises a body, walking wheels are rotatably installed on both sides of the body, a grass inlet is fixedly opened at the front end of the body, a fixed platform is fixedly connected to the bottom end of the body, a guide clamping tooth is fixedly opened on the front of the fixed platform, a friction plate 1 is fixedly connected to the top of the fixed platform, a protective ring is fixedly connected to the inner wall of the bottom of the body, a rotating chamber is fixedly opened at the upper end of the body, a grass passing opening is fixedly opened at the rear of the rotating chamber, a guide block is fixedly connected to the grass passing opening, a top cover is fixedly connected to the top of the body, a power mechanism is fixedly provided on the top cover, a fixed frame is fixedly connected to the center of the top cover, a mounting shaft tube is fixedly connected to the center of the fixed frame, a fixed shaft is fixedly connected to one side of the top cover, a weed conveying mechanism and a grass cutting mechanism are fixedly provided at the bottom of the power mechanism, a grass box is fixedly installed at the rear of the body, and a handle is fixedly connected to the top of the grass box.

[0007] Preferably, the power mechanism includes a driving motor, which is fixedly connected to the top of the top cover, and the output shaft of the driving motor is fixedly connected to the transmission shaft, which extends inwardly into the top cover, and the middle part of the transmission shaft is rotatably connected to the inner wall of the mounting shaft tube, and the upper end of the transmission shaft is fixedly connected to gear one, which is meshingly connected to gear two, which is rotatably connected to the fixed shaft, and the bottom of gear two is fixedly connected to gear three, which is meshingly connected to gear four, and gear four is rotatably connected to the outer wall of the mounting shaft tube.

[0008] Preferably, the weed conveying mechanism includes a baffle, which cooperates with the top of the rotating chamber, the top of the baffle is fixedly connected to the gear four, the bottom of the baffle is fixedly connected with a connecting rod, the other end of the connecting rod is fixedly connected with a conveying rotating circle, the conveying rotating circle is rotatably connected to the bottom of the rotating chamber, and the conveying rotating circle cooperates with the guide block.

[0009] Preferably, the mowing mechanism includes a transmission turntable, the top of the transmission turntable is fixedly connected to the bottom of the transmission shaft, a brake connecting plate is provided at the bottom of the transmission turntable, the brake connecting plate cooperates with the transmission turntable, and a rotating knife disc is axially fixedly connected to the side wall of the brake connecting plate, and the rotating knife disc cooperates with the transmission turntable.

[0010] Preferably, a plurality of groups of flat cutting knives are fixedly connected to the bottom of the outer wall of the rotating cutter disc, an inclined push plate is fixedly connected to the top of the flat cutting knife, a guide convex strip is fixedly connected to the inclined push plate, a top pressure wedge block and a locking frame are fixedly connected to the inner wall of the top of the rotating cutter disc, and a limiting tooth is fixedly connected to the inner wall of the rotating cutter disc.

[0011] Preferably, a tooth groove is fixedly provided on the outer wall of the brake connecting disc, the tooth groove is slidably connected to the limit tooth, a friction plate 2 is fixedly connected to the bottom of the brake connecting disc, the friction plate 2 cooperates with the friction plate 1, a compression spring 1 is fixedly connected to the top center of the brake connecting disc, the other end of the compression spring 1 is rotatably connected to the bottom of the transmission turntable, a fixing rod is fixedly connected to the outer side of the top of the brake connecting disc, and a driven wedge block 1 is fixedly connected to the top of the fixing rod.

[0012] Preferably, a locking rod is fixedly connected to the top of the transmission turntable, the locking rod cooperates with the lock frame, a through slot is fixedly opened on the transmission turntable, the through slot cooperates with a driven wedge block 1, a sliding slot is opened on the through slot, the sliding slot slidably cooperates with a driven wedge block 1, an extrusion top block is slidably connected in the sliding slot, a compression spring 2 is fixedly connected to the rear of the extrusion top block, the rear of the compression spring 2 is fixedly connected to the side wall of the through slot, a driving wedge 2 is fixedly provided at the front of the extrusion top block, the driving wedge 2 cooperates with the driven wedge block 1, a top pressure wedge 2 is fixedly connected to the top of the extrusion top block, the top pressure wedge 2 extends upward out of the sliding slot, and the top pressure wedge 2 cooperates with the top pressure wedge 1.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting a power mechanism, the torque of the driving motor is directly output to the mowing mechanism, and the torque of the driving motor is output to the weed conveying mechanism after deceleration and amplification, thereby driving the mower to cut the grass and recycle the grass clippings; 2. By setting up a weed conveying mechanism, the cut weeds that fall into the conveying circle are transported backward to the grass outlet and pushed into the grass box by the guide block, so as to prevent the cut grass from remaining on the lawn and affecting the viewing experience of the landscape; 3. By setting up a mowing mechanism, the transmission shaft drives the rotating cutter disc to rotate and cut the grass. When the rotating cutter disc contacts hard objects such as iron wire, the rotating cutter disc forms a speed difference with the transmission shaft due to collision. In an extreme time, the brake connecting plate rotates backward relative to the transmission turntable, and the two quickly separate axially. The brake connecting plate moves downward under the push of compression spring 1, and friction plate 2 contacts friction plate 1. The brake connecting plate drives the rotating cutter disc to stop quickly. At the same time, the locking rod separates from the locking frame, and the top pressure wedge block 1 squeezes and contacts the top pressure wedge block 2, so that the rotating cutter disc moves upward for a distance, separates the flat cutter from the guide tooth, and prevents the flat cutter from being damaged further. At the same time, the flat cutter is aligned with the middle of the protective ring, which increases the probability that the damaged or broken flat cutter hits the protective ring, and prevents the flat cutter from flying out from the bottom of the machine body and injuring people after being damaged or broken, thereby improving the safety of the lawn mower. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the bottom structure of the present invention; Figure 3 It is a schematic diagram of the internal structure of the present invention; Figure 4 It is a schematic diagram of the internal structure of the body; Figure 5 It is a structural schematic diagram of the machine body and the weed conveying mechanism; Figure 6 It is a structural diagram of the power mechanism; Figure 7 is a schematic diagram of the internal structure of the top cover; Figure 8 is a schematic diagram of the internal structure of the mowing mechanism; Fig. 9 It is a schematic diagram of the bottom structure of the mowing mechanism; Fig.10 It is a structural explosion diagram of the mowing mechanism; Fig.11 It is a schematic diagram of the top structure of the rotating cutter disc; Fig.12 It is a schematic diagram of the bottom structure of the rotating cutter disc; Fig.13 It is a structural schematic diagram of the brake connection plate; Fig.14 It is a structural schematic diagram of the transmission turntable; Fig.15 It is a schematic diagram of the structure of the extruded top block; Fig.16 It is a schematic diagram of the matching structure between the extrusion top block and the brake connection plate.

[0015] In the figure, 1, machine body; 101, walking wheel; 102, grass inlet; 103, top cover; 103A, fixed frame; 103B, mounting shaft tube; 103C, fixed shaft; 104, fixed platform; 104A, guide clamping gear; 104B, friction plate 1; 105, grass passing port; 105A, guide block; 106, rotating chamber; 107, protective ring; 2, grass box; 201, handle; 3, power mechanism; 301, driving motor; 302, transmission shaft; 303, gear 1; 304, gear 2; 305, gear 3; 306, gear 4; 4, weed conveying mechanism; 401, baffle; 402, connecting rod; 403, conveying circle; 5, mowing mechanism; 501, rotating blade; 501A, flat cutter; 501B, oblique push plate; 501C, guide convex strip; 501D, limit tooth; 501E, top pressure wedge block 1; 501F, locking frame; 502, brake connection plate; 502A, tooth groove; 502B, fixing rod; 502C, driven wedge block 1; 502D, compression spring 1; 502E, friction plate 2; 503, transmission turntable; 503A, through groove; 503B, slide groove; 503C, locking rod; 504, extrusion top block; 504A, compression spring 2; 504B, driving wedge block 2; 504C, top pressure wedge block 2. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings: The directional nouns involved in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application according to the visual orientation shown in the accompanying drawings. Unless otherwise clearly specified and limited, the terms "setting", "installation", "connection", etc. should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0017] like Figure 1 and Figure 2 As shown, a lawn mower comprises a machine body 1, running wheels 101 are rotatably mounted on both sides of the machine body 1, and a grass inlet 102 is fixedly opened at the front end of the machine body 1. Figure 4 As shown, a fixed platform 104 is fixedly connected to the bottom end of the body 1, and a guide tooth 104A is fixedly provided at the front of the fixed platform 104. The guide tooth 104A can comb the grass and play a fixed limit role on the grass, so that the mowing mechanism 5 and the guide tooth 104A cooperate to complete the efficient cutting operation of the grass. If there is no guide tooth 104A, the working mode of simply relying on the high-speed rotation of the mowing mechanism 5 to cut the grass requires the mowing mechanism 5 to rotate at a higher speed, and the cutting effect is not good, and the grass cutting height is prone to unevenness. At the same time, the setting of the fixed platform 104 has a protective effect on the rotating blade 501, preventing hard objects such as stones from directly contacting the rotating blade 501 and causing damage; a friction plate 104B is fixedly connected to the top of the fixed platform 104, and a protective ring 107 is fixedly connected to the inner wall of the bottom of the body 1 , the protective ring 107 is made of hard metal and surrounds the rotating blade 501 to prevent the blade 501 from accidentally breaking and being thrown out of the body 1 and injuring the operator; a rotating chamber 106 is fixedly provided at the upper end of the body 1, and a grass passing opening 105 is fixedly provided at the rear of the rotating chamber 106. A guide block 105A is fixedly connected to the grass passing opening 105. The guide block 105A pushes the grass clippings on the conveying circle 403 backward into the grass passing opening 105 and into the grass box 2; a top cover 103 is fixedly connected to the top of the body 1, and a power mechanism 3 is fixedly provided on the top cover 103. By setting the power mechanism 3, the torque of the driving motor 301 is directly output to the mowing mechanism 5, and the torque of the driving motor 301 is output to the weed conveying mechanism 4 after being decelerated and amplified, thereby driving the lawn mower to cut the grass and recycle the grass clippings.

[0018] like Figure 7As shown, a fixing frame 103A is fixedly connected to the center of the top cover 103, a mounting shaft tube 103B is fixedly connected to the center of the fixing frame 103A, a fixing shaft 103C is fixedly connected to one side of the top cover 103, and a weed conveying mechanism 4 and a mowing mechanism 5 are fixedly provided at the bottom of the power mechanism 3. By setting the weed conveying mechanism 4, the weeds cut and falling into the conveying circle 403 are transported backward to the grass passing port 105, and enter the grass box 2 under the push of the guide block 105A, so as to prevent the cut grass from remaining on the lawn and affecting the landscape viewing experience; By setting up the mowing mechanism 5, the transmission shaft 302 drives the rotating blade disc 501 to rotate and cut the grass. When the rotating blade disc 501 contacts a hard object such as iron wire, the rotating blade disc 501 instantly forms a speed difference with the transmission shaft 302 due to the collision, and the two rotate relative to each other. The brake connecting plate 502 rotates backward relative to the transmission rotating plate 503. At this time, the driven wedge block 1 502C reversely squeezes the driving wedge block 2 504B backward until the driven wedge block 1 502C moves backward to the area of ​​the through groove 503A. While the driven wedge block 1 502C and the driving wedge block 2 504B are squeezed laterally, the driven wedge block 1 502C also moves downward through the through groove 503A and leaves the slide groove 503B. The brake connecting plate 502 is pushed by the compression spring 1 502D. The friction plate 2 502E contacts the friction plate 1 104B, and the brake connection plate 502 drives the rotating blade 501 to gradually stop; and at the same time, the rotating blade 501 rotates backward relative to the transmission rotating plate 503, so that the lock rod 503C is separated from the lock frame 501F, and the top pressing wedge block 1 501E squeezes and contacts the top pressing wedge block 2 504C, so that the rotating blade 501 moves upward for a distance, so that the flat cutter 501A is separated from the guide clamping tooth 104A to prevent the flat cutter 501A from being further damaged, and at the same time, the flat cutter 501A is aligned with the middle of the protection ring 107, so as to increase the probability that the damaged and broken flat cutter 501A hits the protection ring 107, and prevents the flat cutter 501A from flying out from the bottom of the machine body 1 and injuring people after being damaged and broken, thereby improving the safety of the lawn mower. A grass box 2 is fixedly installed at the rear of the machine body 1, and the cut grass is stored in the grass box 2 and uniformly recycled; a handle 201 is fixedly connected to the top of the grass box 2.

[0019] like Figure 3As shown, the power mechanism 3 includes a driving motor 301, which is fixedly connected to the top of the top cover 103, and the output shaft of the driving motor 301 is fixedly connected to the transmission shaft 302, which extends inward into the top cover 103, and the middle part of the transmission shaft 302 is rotatably connected to the inner wall of the mounting shaft tube 103B, and the upper end of the transmission shaft 302 is fixedly connected to a gear 1 303, and the gear 1 303 is meshingly connected to a gear 2 304, and the gear 2 304 is rotatably connected to the fixed shaft 103C, and the bottom of the gear 2 304 is fixedly connected to a gear 3 305, and the gear 3 305 is meshingly connected to a gear 4 306, and the gear 4 306 is rotatably connected to the outer wall of the mounting shaft tube 103B. The power of the driving motor 301 is directly transmitted to the mowing mechanism 5 through the transmission shaft 302. The mowing mechanism 5 rotates at a relatively high speed to mow the lawn. The rotation of the transmission shaft 302 sequentially drives the gear 1 303, the gear 2 304, the gear 3 305, the gear 4 306 and finally drives the weed conveying mechanism 4 to rotate. After the deceleration of each level of gears, the weed conveying mechanism 4 rotates at a relatively slow speed to collect and convey the cut grass.

[0020] like Figure 5 and Figure 6 As shown, the weed conveying mechanism 4 includes a baffle 401, which is rotatably connected to the top of the rotating chamber 106, shielding the top of the rotating chamber 106, and can prevent the cut grass from flying upward into the power mechanism 3 and affecting the meshing of the gears at all levels. The baffle 401 is matched with the top of the rotating chamber 106, and the top of the baffle 401 is fixedly connected to the gear 4306. The bottom of the baffle 401 is fixedly connected to a connecting rod 402, and the other end of the connecting rod 402 is fixedly connected to a conveying ring 403, which is rotatably connected to the bottom of the rotating chamber 106, and the conveying ring 403 is matched with the guide block 105A. The surface of the conveying ring 403 is provided with multiple groups of convex strips, which can increase the friction between the grass and the conveying ring 403 and improve the conveying efficiency.

[0021] like Figure 8 and Fig.10 As shown, the mowing mechanism 5 includes a transmission turntable 503, the top of the transmission turntable 503 is fixedly connected to the bottom of the transmission shaft 302, and a brake connection disk 502 is provided at the bottom of the transmission turntable 503, and the brake connection disk 502 cooperates with the transmission turntable 503. The side wall of the brake connection disk 502 is axially fixedly connected with a rotating blade 501, and the rotating blade 501 cooperates with the transmission turntable 503. The transmission turntable 503 rotates, elastically drives the brake connection disk 502 to rotate, and the brake connection disk 502 drives the rotating blade 501 to rotate, so as to mow the lawn. Since the transmission turntable 503 and the brake connection disk 502 are elastically connected, the two can rotate relative to each other at a certain distance.

[0022] like Fig.11 and Fig.12As shown, multiple groups of flat cutters 501A are fixedly connected to the bottom of the outer wall of the rotating blade disc 501. The flat cutters 501A cooperate with the guide clamping teeth 104A to trim the lawn. By setting an oblique push plate 501B on the top of the flat cutter 501A, the cut grass can be pushed obliquely upward, so that the grass can fly obliquely upward into the area of ​​the conveying circle 403 for recycling. The top of the flat cutter 501A is fixedly connected with an oblique push plate 501B, and the oblique push plate 501B is fixedly connected with a guide convex strip 501C. The setting of the guide convex strip 501C can ensure that the grass is fully in contact with the oblique push plate 501B, so that the grass can be fully pushed by the oblique push plate 501B and fly obliquely upward into the conveying circle 403. The top inner wall of the rotating blade disc 501 is fixedly connected with a top pressure wedge 501E and a lock frame 501F, and the inner wall of the rotating blade disc 501 is fixedly connected with a limiting tooth 501D.

[0023] like Fig. 9 and Fig.13 As shown, a tooth groove 502A is fixedly provided on the outer wall of the brake connection plate 502, and the tooth groove 502A is slidably connected to the limit tooth 501D. The rotation and braking of the brake connection plate 502 directly drive the movement of the rotating cutter disc 501, and the two can slide axially relative to each other; a friction plate 2 502E is fixedly connected to the bottom of the brake connection plate 502, and the friction plate 2 502E cooperates with the friction plate 1 104B. When the brake connection plate 502 moves downward, the friction plate 2 502E contacts and rubs with the friction plate 1 104B, and the brake connection plate 502 is decelerated and braked to ensure that the rotating cutter disc 501 stops rotating urgently; the top of the brake connection plate 502 A compression spring 502D is fixedly connected to the center of the part, and the compression spring 502D accumulates elastic potential energy. When the driven wedge block 502C disengages from the slide groove 503B, the compression spring 502D pushes the brake connecting plate 502 downward, so that the brake connecting plate 502 is squeezed against the fixed platform 104, and the friction plate 502E rubs against the friction plate 104B, so that the rotation speed of the brake connecting plate 502 and the rotating cutter disc 501 is quickly reduced and stopped; the other end of the compression spring 502D is rotatably connected to the bottom of the transmission turntable 503, and the top outer side of the brake connecting plate 502 is fixedly connected to a fixed rod 502B, and the top of the fixed rod 502B is fixedly connected to a driven wedge block 502C.

[0024] like Fig.14 , Fig.15 and Fig.16As shown, a locking rod 503C is fixedly connected to the top of the transmission turntable 503, and the locking rod 503C cooperates with the locking frame 501F. The engagement of the locking rod 503C and the locking frame 501F can axially fix the transmission turntable 503 and the rotating cutter disc 501, ensuring that the rotating cutter disc 501 can fit closely with the guide latch teeth 104A to mow the lawn. When the rotating cutter disc 501 and the transmission turntable 503 undergo a large relative rotation, the locking rod 503C and the locking frame 501F disengage, allowing the transmission turntable 503 and the rotating cutter disc 501 to be axially separated; a through slot 503A is fixedly provided on the transmission turntable 503, and the through slot 503A cooperates with the driven wedge block 502C. The through slot 503A is wide, allowing the driven wedge block 502C to fall therefrom and disengage from the slide slot 503B.

[0025] The through slot 503A is provided with a slide slot 503B, which is slidably matched with the driven wedge block 1 502C, and an extrusion top block 504 is slidably connected in the slide slot 503B, and a compression spring 2 504A is fixedly connected to the rear of the extrusion top block 504, and the rear of the compression spring 2 504A is fixedly connected to the side wall of the through slot 503A, and a driving wedge 2 504B is fixedly provided at the front of the extrusion top block 504, and the driving wedge 2 504B cooperates with the driven wedge 1 502C. By setting the extrusion top block 504, can transfer the power elasticity of the transmission rotating disk 503 to the brake connection disk 502, the extrusion top block 504 allows the transmission rotating disk 503 and the brake connection disk 502 to rotate relative to each other for a certain distance, thereby avoiding the torque stress concentration caused by the rigid connection with the rotating cutter disk 501, and when the rotating cutter disk 501 contacts a hard object, the relative rotation distance between the two is too large, the extrusion top block 504 will release the brake connection disk 502 downward, and push up the rotating cutter disk 501. The top of the extrusion top block 504 is fixedly connected with a top pressing wedge block 2 504C, which extends upward to a slide groove 503B, and the top pressing wedge block 2 504C cooperates with the top pressing wedge block 1 501E.

[0026] Working principle: 1. The operator grasps the handle 201 and pushes the lawn mower forward, the drive motor 301 starts, the grass enters the machine body 1 from the grass inlet 102 and enters between the guide teeth 104A, the rotating cutter disc 501 drives the flat cutter 501A to rotate, and the grass is cut; 2. After being cut, a large amount of grass clippings are pushed by the oblique push plate 501B and thrown obliquely upward, falling into the conveying circle 403. As the conveying circle 403 rotates and moves to the rear, the grass clippings are blocked by the guide block 105A and pass through the grass opening 105 into the grass box 2 at the rear, completing the collection operation; 3. When the rotating cutter disc 501 contacts a hard object such as a steel wire, within a short period of time of collision, a speed difference occurs between the rotating cutter disc 501 and the transmission shaft 302, and the brake connection disc 502 and the rotating cutter disc 501 rotate backward relative to the transmission rotary disc 503; 4. The lock frame 501F is separated from the lock rod 503C, and the pressing wedge block 2 504C pushes up the wedge block 1 501E, and the driving wedge block 2 504B presses the driven wedge block 1 502C downward; 5. Therefore, within a very short time after the collision, the rotating blade disc 501 moves upward by an end distance, so that the flat cutter 501A is away from the guide tooth 104A, and the distance between the two is increased. The flat cutter 501A moves to the middle of the protection ring 107, and the brake connecting plate 502 moves downward to the fixed platform 104, and the friction plate 1 104B contacts the friction plate 2 502E, and the rotating blade disc 501 is quickly braked to a stop, thereby greatly ensuring the safety of the lawn mower.

[0027] The present invention provides a power mechanism 3 to directly output the torque of the driving motor 301 to the mowing mechanism 5, and outputs the torque of the driving motor 301 to the weed conveying mechanism 4 after deceleration and amplification, thereby driving the mower to cut the grass and recycle the grass clippings; by providing the weed conveying mechanism 4, the cut weeds that fall into the conveying circle 403 are transported backward to the grass passing port 105, and enter the grass box 2 under the push of the guide block 105A, so as to prevent the cut grass clippings from continuing to remain on the lawn and affect the viewing experience of the landscape; by providing the mowing mechanism 5, the transmission shaft 302 drives the rotating blade disc 501 to rotate to cut the grass. When the rotating blade disc 501 contacts a hard object such as iron wire, the rotating blade disc 501 instantly forms a speed difference with the transmission shaft 302 due to the collision, and the brake stops the connecting disc 502 to rotate backward relative to the transmission rotary disc 503. At this time, the driven wedge block 1 502C squeezes the driving device backward in the opposite direction. The wedge block 2 504B and the driven wedge block 1 502C move downwardly away from the slide groove 503B, and the brake connection plate 502 moves downwardly under the push of the compression spring 1 502D, and the friction plate 2 502E contacts the friction plate 104B. The brake connection plate 502 drives the rotating blade 501 to gradually stop, and at the same time, the rotating blade 501 rotates backward relative to the transmission turntable 503, so that the locking rod 503C is separated from the locking frame 501F, and the pressing wedge block 1 501E is pressed and contacts the pressing wedge block 2 504C, so that the rotating blade 501 moves upward for a distance, and the flat cutter 501A is separated from the guide tooth 104A to prevent the flat cutter 501A from being further damaged. At the same time, the flat cutter 501A is aligned with the middle of the protective ring 107, so as to increase the probability that the damaged or broken flat cutter 501A hits the protective ring 107, and prevent the flat cutter 501A from flying out from the bottom of the machine body 1 and injuring people after being damaged or broken, thereby improving the safety of the lawn mower.

Claims

1. A lawn mower, characterized in that: The machine body (1) comprises a machine body (1), wherein both sides of the machine body (1) are rotatably provided with walking wheels (101), a grass inlet (102) is fixedly provided at the front end of the machine body (1), a fixed platform (104) is fixedly connected to the bottom end of the machine body (1), a guide clamping tooth (104A) is fixedly provided at the front of the fixed platform (104), a friction plate (104B) is fixedly connected to the top of the fixed platform (104), a protective ring (107) is fixedly connected to the inner wall of the bottom of the machine body (1), a rotating chamber (106) is fixedly provided at the upper end of the machine body (1), a grass passing opening (105) is fixedly provided at the rear of the rotating chamber (106), and a A guide block (105A) is fixedly connected, a top cover (103) is fixedly connected to the top of the machine body (1), a power mechanism (3) is fixedly provided on the top cover (103), a fixing frame (103A) is fixedly connected to the center of the top cover (103), a mounting shaft tube (103B) is fixedly connected to the center of the fixing frame (103A), a fixing shaft (103C) is fixedly connected to one side of the top cover (103), a weed conveying mechanism (4) and a mowing mechanism (5) are fixedly provided at the bottom of the power mechanism (3), a grass box (2) is fixedly installed at the rear of the machine body (1), and a handle (201) is fixedly connected to the top of the grass box (2).

2. The lawn mower according to claim 1, characterized in that: The power mechanism (3) comprises a driving motor (301), the driving motor (301) being fixedly connected to the top of the top cover (103), the output shaft of the driving motor (301) being fixedly connected to a transmission shaft (302), the transmission shaft (302) extending inwardly into the interior of the top cover (103), the middle portion of the transmission shaft (302) being rotatably connected to the inner wall of the mounting shaft tube (103B), the upper end of the transmission shaft (302) being fixedly connected to a gear one (303), the gear one (303) being meshingly connected to a gear two (304), the gear two (304) being rotatably connected to the fixed shaft (103C), the bottom of the gear two (304) being fixedly connected to a gear three (305), the gear three (305) being meshingly connected to a gear four (306), the gear four (306) being rotatably connected to the outer wall of the mounting shaft tube (103B).

3. The lawn mower according to claim 1, characterized in that: The weed conveying mechanism (4) comprises a baffle (401), the baffle (401) matches with the top of the rotating chamber (106), the top of the baffle (401) is fixedly connected to the gear four (306), the bottom of the baffle (401) is fixedly connected to a connecting rod (402), the other end of the connecting rod (402) is fixedly connected to a conveying rotating circle (403), the conveying rotating circle (403) is rotatably connected to the bottom of the rotating chamber (106), and the conveying rotating circle (403) matches with a guide block (105A).

4. The lawn mower according to claim 1, characterized in that: The mowing mechanism (5) comprises a transmission rotating disk (503), the top of the transmission rotating disk (503) is fixedly connected to the bottom of the transmission shaft (302), a brake connection disk (502) is provided at the bottom of the transmission rotating disk (503), the brake connection disk (502) matches the transmission rotating disk (503), a rotating blade disk (501) is axially fixedly connected to the side wall of the brake connection disk (502), and the rotating blade disk (501) matches the transmission rotating disk (503).

5. The lawn mower according to claim 4, characterized in that: The bottom of the outer wall of the rotating cutter disc (501) is fixedly connected to a plurality of groups of flat cutters (501A); the top of the flat cutter disc (501A) is fixedly connected to an oblique push plate (501B); the oblique push plate (501B) is fixedly connected to a guide convex strip (501C); the top inner wall of the rotating cutter disc (501) is fixedly connected to a top pressure wedge block (501E) and a lock frame (501F); and the inner wall of the rotating cutter disc (501) is fixedly connected to a limiting tooth (501D).

6. The lawn mower according to claim 4, characterized in that: The outer wall of the brake connection disk (502) is fixedly provided with a tooth groove (502A), the tooth groove (502A) is slidably connected to the limit tooth (501D), the bottom of the brake connection disk (502) is fixedly connected to a friction plate 2 (502E), the friction plate 2 (502E) cooperates with the friction plate 1 (104B), the top center of the brake connection disk (502) is fixedly connected to a compression spring 1 (502D), the other end of the compression spring 1 (502D) is rotatably connected to the bottom of the transmission rotating disk (503), the top outer side of the brake connection disk (502) is fixedly connected to a fixed rod (502B), and the top of the fixed rod (502B) is fixedly connected to a driven wedge block 1 (502C).

7. The lawn mower according to claim 4, characterized in that: The top of the transmission turntable (503) is fixedly connected with a locking rod (503C), the locking rod (503C) cooperates with the locking frame (501F), a through slot (503A) is fixedly provided on the transmission turntable (503), the through slot (503A) cooperates with a driven wedge block (502C), a sliding groove (503B) is provided on the through slot (503A), the sliding groove (503B) slidably cooperates with the driven wedge block (502C), an extrusion top block (504) is slidably connected in the sliding groove (503B), and the extrusion top block (504) is rearwardly moved. The front part of the extrusion top block (504) is fixedly connected with a second compression spring (504A), the rear part of the second compression spring (504A) is fixedly connected with the side wall of the through groove (503A), the front part of the extrusion top block (504) is fixedly provided with a second driving wedge block (504B), the second driving wedge block (504B) cooperates with the first driven wedge block (502C), the top of the extrusion top block (504) is fixedly connected with a second pressing wedge block (504C), the second pressing wedge block (504C) extends upward out of the slide groove (503B), and the second pressing wedge block (504C) cooperates with the first pressing wedge block (501E).

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