Reversible driving gearbox and intelligent mower applying gearbox

Abstract

The invention belongs to the field of mowers, and provides a reversible driving gearbox and an intelligent mower applying the same, the reversible driving gearbox comprises an output box body, the output box body is mounted on a main gearbox, and an output driving bevel gear is rotatably mounted in the output box body; one end of the output driving bevel gear and the output end of the main gearbox are fixedly installed, and an output shaft is further rotationally installed in the output box body. By arranging the reversible driving gearbox and connecting the reversible driving gearbox with the cutting blade of the mower, the reversing function of the cutting blade can be achieved, and after the cutting blade is wound by foreign matter or clamped into a barrier, the meshing sleeve can be meshed with different reversing bushes by rotating the reversing rocker arm, so that the cutting blade can be driven to rotate, and the cutting blade can be driven to rotate. Therefore, reverse rotation of the output shaft and the cutting blade is achieved, the cutting blade gets rid of foreign matter or obstacles, hands of workers are prevented from being inserted, the workload of the workers is reduced, and the device is more convenient to use.

Description

Technical Field

[0001] The invention belongs to the field of lawn mowers, and in particular relates to a reversible drive gearbox and an intelligent lawn mower using the gearbox. Background Art

[0002] With the advancement of technology and the improvement of living standards, people's requirements for greening are also increasing day by day, and lawns have become an important greening in public places and private homes. As a tool for mowing lawns, lawn mowers are increasingly used in life.

[0003] The early lawn mowers on the market were walk-behind lawn mowers, which controlled the direction of the mower's movement and completed the mowing operation through manual traction. With the development of technology, smart lawn mowers have gradually emerged. Smart lawn mowers can automatically mow with the help of various sensors without human intervention, which greatly saves labor costs. However, smart lawn mowers rely on sensors to perceive the surrounding environment and make decisions. In complex or unstable environments, sensors may be interfered with, resulting in errors in information collection or processing. In addition, for particularly complex or irregular lawn shapes, the path planning algorithm of smart lawn mowers may not meet the needs, affecting the normal operation of the lawn mower. Therefore, for some lawns in complex environments, walk-behind lawn mowers are still used for mowing.

[0004] At present, the gearbox used in lawn mowers only has the function of changing speed, but not of reversing. When foreign objects are entangled on the cutting blade of the lawn mower, or the cutting blade is stuck on an obstacle, it is usually necessary to stop the lawn mower and then have the staff manually clean up the foreign objects or pull out the blade, which is troublesome to handle. Summary of the invention

[0005] The object of the present invention is to provide a reversible drive gearbox and an intelligent lawn mower using the gearbox, aiming to solve the technical problem that the mowing direction of the lawn mower cannot be reversed in the prior art.

[0006] The present invention is implemented in this way. A reversible drive gearbox includes an output box body, which is installed on a main gearbox. The main gearbox can be any type of gearbox. In the present embodiment, the main gearbox is a four-wheel drive gearbox. This type of gearbox is a prior art and will not be described in detail again. An output active bevel gear is rotatably installed inside the output box body. One end of the output active bevel gear is fixedly installed with the output end of the main gearbox. An output shaft is also rotatably installed inside the output box body. One end of the output shaft extends out of the output box body. Two reversing bushings are rotatably installed on one end of the output shaft located inside the output box body. Reversing passive bevel gears are fixedly installed on the two reversing bushings. The two reversing passive bevel gears are respectively located on both sides of the output active bevel gear, and the two reversing passive bevel gears are meshed and connected with the output active bevel gear.

[0007] A shift fork shaft is also fixedly installed inside the output box body, a reversing shift fork is slidably installed on the shift fork shaft, one end of the reversing shift fork is rotatably connected with an engagement sleeve, the engagement sleeve is slidably installed on the output shaft, the engagement sleeve is located between the two reversing bushings, and the width of the engagement sleeve is smaller than the width of the interval between the two reversing bushings, the ends of the two reversing bushings close to the engagement sleeves are both provided with external teeth, the inner side surface of the engagement sleeve is provided with internal teeth, and the engagement sleeve can be engaged with the two reversing bushings respectively;

[0008] An upper cover is fixedly mounted on the output box body, a reversing rocker arm is rotatably mounted on the upper cover, and one end of the reversing rocker arm located inside the output box body is rotatably connected to the reversing fork.

[0009] Further technical solution: a retaining ring is provided between the two reversing passive bevel gears and the output housing to limit the position of the reversing passive bevel gears so that the reversing passive bevel gears are kept in mesh with the output active bevel gears.

[0010] An intelligent lawn mower using a reversible drive gearbox, comprising a reversible drive gearbox and a main gearbox, wherein the reversible drive gearbox is installed on the power output end of the main gearbox, a rear drive wheel is installed on the walking end of the main gearbox, a power engine is fixedly installed on the side of the main gearbox, the output end of the power engine is fixedly connected to the input end of the main gearbox, and the main gearbox has multiple gears, such as forward first, second, and third gears, reverse gear, neutral gear, etc.

[0011] A mounting shell is fixedly mounted on the side of the main gearbox, and a front wheel is rotatably mounted on one end of the mounting shell so that the device can walk on the ground;

[0012] A main drive shaft is rotatably mounted inside the mounting shell, and the main drive shaft and the output shaft are connected to each other through a second transmission pair. A fixed horizontal plate is also fixedly connected inside the mounting shell, and a lifting cutting tool holder is slidably mounted on the fixed horizontal plate. A cutting shaft is rotatably mounted on the bottom of the lifting cutting tool holder close to the ground, and a cutting knife is fixedly connected to the bottom end of the cutting shaft.

[0013] A first transmission mechanism is connected between the main drive shaft and the cutting shaft, and the main drive shaft can drive the cutting shaft to rotate through the first transmission mechanism, so that the cutting shaft drives the cutting blade to mow the lawn;

[0014] A second transmission mechanism is installed on the fixed horizontal plate, one end of the second transmission mechanism is connected to the top of the lifting cutting knife frame, and the other end of the second transmission mechanism is connected to the main driving shaft. When the main driving shaft rotates, the second transmission mechanism can drive the lifting cutting knife frame to rise and fall, so that the height of the lifting cutting knife frame and the cutting knife can be adjusted, which is convenient for adjusting the height of cutting grass.

[0015] Further technical solution: The first transmission mechanism includes a first bevel gear and a mounting frame, the first bevel gear is fixedly mounted on the main drive shaft, the mounting frame is rotatably mounted on the main drive shaft, a second bevel gear is rotatably mounted on the mounting frame, the second bevel gear is meshingly connected with the first bevel gear, the second bevel gear is slidably mounted on the cutting shaft via a spline, and a key groove matching the spline is opened on the side of the cutting shaft.

[0016] Further technical solution: the second transmission mechanism comprises a second fixed vertical plate fixedly connected to the fixed horizontal plate, a driven shaft is rotatably mounted on the second fixed vertical plate, a screw is rotatably mounted on the fixed horizontal plate, one end of the screw is threadedly connected to the top of the lifting cutting tool holder, and a fourth transmission pair is connected between the driven shaft and the screw;

[0017] The fixed horizontal plate is fixedly connected to a first fixed vertical plate, a driving shaft is rotatably mounted on the first fixed vertical plate, the driving shaft is not in contact with the driven shaft, and a third transmission pair is connected between the driving shaft and the main drive shaft;

[0018] A synchronization component is arranged between the driving shaft and the driven shaft, and the synchronization component is used to make the driving shaft and the driven shaft move synchronously, so that the main driving shaft can drive the driving shaft and the driven shaft to rotate through the third transmission pair, and the driven shaft drives the screw to rotate through the fourth transmission pair, and the screw drives the lifting and lowering cutting tool holder to rise and fall.

[0019] Further technical solution: the synchronization component comprises a connecting sleeve slidably mounted on the driven shaft, a compression spring is connected between the side of the connecting sleeve facing away from the driving shaft and the driven shaft, a plurality of evenly distributed driving blocks are arranged on the side of one end of the driving shaft close to the driven shaft, a plurality of evenly distributed driven blocks adapted to the driving blocks are arranged on the inner side wall of the connecting sleeve, and the outer diameter of the driving blocks is equal to the inner diameter of the connecting sleeve;

[0020] Move the connecting sleeve to insert the driven block between the driving blocks, so that the driving shaft can drive the driven block and the connecting sleeve to rotate through the driving block, and the connecting sleeve drives the driven shaft to rotate;

[0021] In order to drive the connecting sleeve to move, a rotating ring is rotatably installed on the connecting sleeve, a pull rope is fixedly connected to the rotating ring, a guide plate is fixedly connected to the fixed horizontal plate, and one end of the pull rope passes through the first fixed vertical plate and the guide plate in sequence.

[0022] Further technical solution: a distance sensor is also provided on the mounting housing, the distance sensor is used to detect the distance between the ground and the cutting knife, a first operating mechanism is also provided on the fixed horizontal plate, the first operating mechanism is electrically connected to the distance sensor, one end of the first operating mechanism is connected to the pull rope, and the first operating mechanism is used to pull the pull rope;

[0023] A second operating mechanism is also installed on the upper cover, the output end of the second operating mechanism is connected to the reversing rocker arm, the distance sensor is electrically connected to the second operating mechanism, and the second operating mechanism is used to drive the reversing rocker arm to rotate.

[0024] Further technical solution: A garbage removal mechanism is also installed on the mounting shell, and the garbage removal mechanism includes an inner cylinder fixedly mounted on the mounting shell, the inner cylinder is a hollow structure, a rotating cylinder is rotatably mounted on the inner cylinder, a first transmission pair is connected between the rotating cylinder and the main drive shaft, and a plurality of groups of material picking assemblies are fixedly connected to the rotating cylinder, and the plurality of groups of the material picking assemblies are evenly distributed around the axis of the rotating cylinder, and the plurality of groups of the material picking assemblies include a plurality of pick rods, and the plurality of pick rods are evenly distributed along the axis of the rotating cylinder, and a material picking rod is installed at the end of each pick rod, and the angle between the axis of the material picking rod and the axis of the pick rod is not greater than 120° and not less than 90°;

[0025] When the rotating drum rotates, it drives all the scraping rods and the picking rods to rotate. The picking rods hook the garbage on the lawn and drive the garbage to rotate, thereby cleaning the garbage in front of the cutting blade to prevent the garbage from damaging the cutting blade, and the grass on the lawn will pass through the gaps between the scraping rods;

[0026] In order to collect garbage, a material drop opening is provided at the top of the inner cylinder, and a plurality of material drop slots that can be connected to the material drop opening are provided on the rotating cylinder, and each of the material drop slots is provided between two adjacent groups of material picking components;

[0027] In order to facilitate cleaning of garbage inside the inner cylinder, a cleaning port communicating with the inner cylinder is provided on the side of the mounting shell, and a cleaning door is provided at the cleaning port.

[0028] Further technical solution: a plurality of combing slits are provided on the mounting housing, the positions of the combing slits and the pick rods correspond to each other, and the width of the combing slits is slightly larger than the diameter of the pick rods, for example, the width of the combing slits is 3 to 5 mm larger than the diameter of the pick rods;

[0029] When the pick rod drives the pick-up rod to pass through the combing slot, the garbage on the pick-up rod will be blocked by the combing slot, and the garbage will be torn into pieces by the combing slot and fall onto the pick rod below, and then slide from the pick rod into the inner cylinder;

[0030] However, when the garbage has strong toughness, it is not easy to be torn off and the picking rod may be stuck. Therefore, the picking rod can be arranged to be movable so that the picking rod is rotatably installed at one end of the digging rod, and a pull rod is also slidably installed inside the digging rod. The end of the pull rod close to the picking rod is hinged with a connecting rod, one end of the connecting rod is hinged to one end of the picking rod, and the other end of the pull rod passes through the digging rod and abuts against the side of the inner cylinder. When the digging rod moves to the bottom of the combing seam, one end of the pull rod is within the range of the blanking port, and a tension spring is connected between the side of the pull rod facing away from the inner cylinder and the digging rod. Initially, there is an angle between the picking rod and the digging rod.

[0031] Further technical solution: the power engine is a gasoline engine, and a fuel tank is also installed on the top of the power engine, and the output end of the fuel tank is connected to the fuel inlet of the power engine.

[0032] Further technical solution: A handlebar is fixedly mounted on the main gearbox to facilitate the staff to manually push the lawn mower.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. The present invention can realize the reversing function of the cutting blade by providing a reversible drive gearbox and connecting the reversible drive gearbox to the cutting blade of the lawn mower. When the cutting blade is entangled by foreign objects or stuck in obstacles, the reversing rocker arm can be rotated to make the engagement sleeve engage with different reversing bushings, thereby realizing the reversal of the output shaft and the cutting blade, so that the cutting blade can get rid of foreign objects or obstacles, avoid the intervention of the staff, reduce the workload of the staff, and make the device more convenient to use;

[0035] 2. The present invention provides a lifting cutting blade holder and a second transmission mechanism. When there is a protrusion on the lawn, the lifting cutting blade holder can be driven up and down by the second transmission mechanism to drive the cutting blade up and down, so that the cutting blade can be adjusted in time to avoid the cutting blade colliding with the protrusion and causing damage to the cutting blade. Compared with the existing lawn mower, which needs to adjust the cutting height in advance and cannot be adjusted again during the cutting process, the device is safer and more convenient to use.

[0036] 3. The present invention is provided with a distance sensor, a first operating mechanism and a second operating mechanism. When there is a protrusion on the ground, the distance sensor detects the height of the protrusion, and controls the rotation of the reversing rocker arm and the movement of the pull rope through the second operating mechanism and the first operating mechanism. The reversing rocker arm changes the rotation direction of the output shaft, and the pull rope makes the driven shaft and the driving shaft rotate synchronously, so as to adjust the height of the cutting knife, avoid the cutting knife from cutting hard objects, and make the grass cut at the same height, avoid manual operation, and make the device more intelligent.

[0037] 4. The present invention is provided with a garbage removal mechanism. When the device is mowing the lawn, the garbage removal mechanism can remove and collect the garbage in front of the cutting blade, thereby preventing the garbage from damaging the cutting blade, and there is no need for the staff to clean up the garbage on the lawn in advance, which is more convenient to use;

[0038] 5. The present invention provides a combing slot and makes the picking rod rotatably installed on the digging rod. When the tough garbage is entangled on the picking rod, after the picking rod passes through the combing slot, the combing slot will scrape the garbage off the picking rod, and the garbage will fall onto the digging rod below, and then slide into the inner tube, thereby realizing the self-cleaning of the picking rod and avoiding the garbage removal mechanism from being stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the front cross-sectional structure of the reversible drive transmission of the present invention.

[0040] Figure 2 It is a structural schematic diagram of a partial front cross section of the reversible drive transmission of the present invention.

[0041] Figure 3 It is a schematic structural diagram of a side cross-section of a reversible drive transmission of the present invention.

[0042] Figure 4 It is a structural schematic diagram of a partial side cross-section of the reversible drive transmission of the present invention.

[0043] Figure 5 It is a front view structural schematic diagram of an intelligent lawn mower using a reversible drive gearbox in the present invention.

[0044] Figure 6It is a schematic diagram of the rear view structure of the intelligent lawn mower using the reversible drive gearbox in the present invention.

[0045] Figure 7 It is a schematic diagram of the internal structure of the housing installed in the present invention.

[0046] Figure 8 It is a schematic diagram of the installation structure of the first transmission mechanism in the present invention.

[0047] Fig. 9 For the present invention Figure 7 Enlarged schematic diagram at point A in the middle.

[0048] Fig.10 It is a structural schematic diagram of the second transmission mechanism in the present invention.

[0049] Fig.11 It is a structural schematic diagram of the connecting sleeve in the present invention.

[0050] Fig.12 It is a schematic diagram of the installation structure of the garbage removal mechanism in the present invention.

[0051] Fig.13 It is a schematic diagram of the front cross-sectional structure of the rotating drum in the present invention.

[0052] Fig.14 For the present invention Fig.13 Enlarged schematic diagram of point B in the middle.

[0053] In the attached drawings: 1. reversing rocker arm; 2. upper cover; 3. reversing fork; 4. output active bevel gear; 5. output housing; 6. main gearbox; 7. output shaft; 8. fork shaft; 9. retaining ring; 10. reversing passive bevel gear; 11. reversing bushing; 12. meshing sleeve; 13. mounting housing; 14. front wheel; 15. garbage removal mechanism; 151. pick rod; 152. rotating cylinder; 153. inner cylinder; 154. blanking port; 155. pick rod; 156. first transmission pair; 157. cleaning door; 158. combing seam; 159. blanking seam; 1510. connecting rod; 1511. pull rod; 1512. tension spring; 16. rear drive wheel; 17. power engine; 18. fuel tank; 1 9. Handlebar; 20. Main drive shaft; 21. Fixed horizontal plate; 22. Second transmission pair; 23. Lifting cutting knife holder; 24. First transmission mechanism; 241. First bevel gear; 242. Keyway; 243. Second bevel gear; 244. Mounting frame; 25. Second transmission mechanism; 251. Pull rope; 252. Guide plate; 253. Third transmission pair; 254. First fixed vertical plate; 255. Active shaft; 256. Rotating ring; 257. Connecting sleeve; 258. Second fixed vertical plate; 259. Driven shaft; 2510. Fourth transmission pair; 2511. Screw; 2512. Driving block; 2513. Compression spring; 2514. Driven block; 26. Cutting shaft; 27. Cutting knife. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0055] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0056] like Figure 1-Figure 6As shown, a reversible drive gearbox provided by the present invention comprises an output housing 5, wherein the output housing 5 is mounted on a main gearbox 6, and the main gearbox 6 can be any type of gearbox. In the present embodiment, the main gearbox 6 is a four-wheel drive gearbox, and this type of gearbox is a prior art, and will not be described in detail again. An output active bevel gear 4 is rotatably mounted inside the output housing 5, and one end of the output active bevel gear 4 is fixedly mounted to the output end of the main gearbox 6. An output shaft 7 is also rotatably mounted inside the output housing 5, and one end of the output shaft 7 extends out of the output housing 5. Two reversing bushings 11 are rotatably mounted on one end of the output shaft 7 located inside the output housing 5, and reversing passive bevel gears 10 are fixedly mounted on the two reversing bushings 11, and the two reversing passive bevel gears 10 are respectively located on both sides of the output active bevel gear 4, and the two reversing passive bevel gears 10 are meshedly connected with the output active bevel gear 4;

[0057] A shift fork shaft 8 is also fixedly installed inside the output housing 5, and a reversing shift fork 3 is slidably installed on the shift fork shaft 8. One end of the reversing shift fork 3 is rotatably connected with a meshing sleeve 12, and the meshing sleeve 12 is slidably installed on the output shaft 7. The meshing sleeve 12 is located between the two reversing bushings 11, and the width of the meshing sleeve 12 is smaller than the width of the interval between the two reversing bushings 11. The ends of the two reversing bushings 11 close to the meshing sleeve 12 are both provided with external teeth, and the inner side surface of the meshing sleeve 12 is provided with internal teeth, and the meshing sleeve 12 can mesh with the two reversing bushings 11 respectively;

[0058] An upper cover 2 is also fixedly mounted on the output box body 5 , and a reversing rocker arm 1 is rotatably mounted on the upper cover 2 . One end of the reversing rocker arm 1 located inside the output box body 5 is rotatably connected to the reversing fork 3 .

[0059] like Figure 1-Figure 4 As shown, a reversible drive gearbox provided by the present invention is provided. In this embodiment, a retaining ring 9 is provided between the two reversing passive bevel gears 10 and the output housing 5 to limit the position of the reversing passive bevel gears 10 so that the reversing passive bevel gears 10 remain in meshing with the output active bevel gear 4.

[0060] Initially, the meshing sleeve 12 and the two reversing bushings 11 are not meshed, and are in a neutral state. The output active bevel gear 4 cannot drive the output shaft 7 to rotate through the reversing passive bevel gear 10. During reversing, the reversing rocker arm 1 is rotated, and the reversing rocker arm 1 drives the reversing fork 3 to move on the fork shaft 8. The reversing fork 3 drives the meshing sleeve 12 to move, so that the meshing sleeve 12 is meshed with one of the reversing bushings 11. The output active bevel gear 4 drives the reversing bushing 11 to rotate through the reversing passive bevel gear 10, and the reversing bushing 11 drives the meshing sleeve 12 to rotate, and the meshing sleeve 12 drives the output shaft 7 to rotate. Since the two reversing passive bevel gears 10 have different rotation directions, when the meshing sleeve 12 meshes with different reversing bushings 11, the rotation directions of the output shaft 7 will be different, thereby realizing the reversing of the output shaft 7.

[0061] like Figure 1-Figure 11 As shown, an intelligent lawn mower using a reversible drive gearbox provided by the present invention includes a reversible drive gearbox and a main gearbox 6, wherein the reversible drive gearbox is installed on the power output end of the main gearbox 6, a rear drive wheel 16 is installed on the walking end of the main gearbox 6, a power engine 17 is fixedly installed on the side of the main gearbox 6, the output end of the power engine 17 is fixedly connected to the input end of the main gearbox 6, and the main gearbox 6 has multiple gears, such as forward first, second, and third gears, reverse gear, neutral gear, etc.;

[0062] A mounting housing 13 is fixedly mounted on the side of the main gearbox 6, and a front wheel 14 is rotatably mounted on one end of the mounting housing 13 so that the device can move on the ground;

[0063] A main drive shaft 20 is rotatably mounted inside the mounting housing 13, and the main drive shaft 20 is transmission-connected to the output shaft 7 via a second transmission pair 22. A fixed transverse plate 21 is also fixedly connected inside the mounting housing 13, and a lifting cutting tool holder 23 is slidably mounted on the fixed transverse plate 21. A cutting shaft 26 is rotatably mounted at the bottom of the lifting cutting tool holder 23 close to the ground, and a cutting tool 27 is fixedly connected to the bottom end of the cutting shaft 26.

[0064] A first transmission mechanism 24 is connected between the main drive shaft 20 and the cutting shaft 26. The main drive shaft 20 can drive the cutting shaft 26 to rotate through the first transmission mechanism 24, so that the cutting shaft 26 drives the cutting blade 27 to mow the lawn.

[0065] A second transmission mechanism 25 is installed on the fixed horizontal plate 21, one end of the second transmission mechanism 25 is connected to the top of the lifting cutting blade frame 23, and the other end of the second transmission mechanism 25 is connected to the main drive shaft 20. When the main drive shaft 20 rotates, the second transmission mechanism 25 can drive the lifting cutting blade frame 23 to rise and fall, so that the height of the lifting cutting blade frame 23 and the cutting blade 27 can be adjusted, which is convenient for adjusting the height of cutting grass.

[0066] like Figure 7-Figure 8 As shown, an intelligent lawn mower with a reversible drive gearbox is provided by the present invention. In this embodiment, the first transmission mechanism 24 includes a first bevel gear 241 and a mounting frame 244. The first bevel gear 241 is fixedly mounted on the main drive shaft 20, and the mounting frame 244 is rotatably mounted on the main drive shaft 20. A second bevel gear 243 is rotatably mounted on the mounting frame 244. The second bevel gear 243 is meshed and connected with the first bevel gear 241. The second bevel gear 243 is slidably mounted on the cutting shaft 26 through a spline. The side of the cutting shaft 26 is provided with a keyway 242 that matches the spline.

[0067] When the main drive shaft 20 rotates, the main drive shaft 20 drives the second bevel gear 243 to rotate through the first bevel gear 241, and the second bevel gear 243 drives the cutting shaft 26 to rotate through the spline, and the cutting shaft 26 drives the cutting knife 27 to rotate. When adjusting the height of the cutting knife 27, the second transmission mechanism 25 drives the lifting cutting knife frame 23 to rise and fall, and the lifting cutting knife frame 23 drives the cutting shaft 26 and the cutting knife 27 to rise and fall, and the spline and the cutting shaft 26 slide relative to each other, so that the first bevel gear 241 and the second bevel gear 243 can always be engaged.

[0068] like Figure 7 and Figure 9-11 As shown, it is an intelligent lawn mower with a reversible drive gearbox provided by the present invention. In this embodiment, the second transmission mechanism 25 includes a second fixed vertical plate 258 fixedly connected to the fixed horizontal plate 21, a driven shaft 259 is rotatably mounted on the second fixed vertical plate 258, a screw rod 2511 is rotatably mounted on the fixed horizontal plate 21, one end of the screw rod 2511 is threadedly connected to the top of the lifting cutting blade frame 23, and a fourth transmission pair 2510 is connected between the driven shaft 259 and the screw rod 2511;

[0069] The fixed horizontal plate 21 is fixedly connected with a first fixed vertical plate 254, and a driving shaft 255 is rotatably mounted on the first fixed vertical plate 254. The driving shaft 255 does not contact the driven shaft 259, and a third transmission pair 253 is connected between the driving shaft 255 and the main drive shaft 20;

[0070] A synchronization component is arranged between the driving shaft 255 and the driven shaft 259, and the synchronization component is used to make the driving shaft 255 and the driven shaft 259 move synchronously, so that the main driving shaft 20 can drive the driving shaft 255 and the driven shaft 259 to rotate through the third transmission pair 253, and the driven shaft 259 can drive the screw 2511 to rotate through the fourth transmission pair 2510, and the screw 2511 drives the lifting and lowering cutting tool holder 23 to rise and fall.

[0071] like Figure 7 and Figure 9-11 As shown, a smart lawn mower with a reversible drive gearbox provided by the present invention is provided. In this embodiment, the synchronization component includes a connecting sleeve 257 slidably mounted on a driven shaft 259, a compression spring 2513 is connected between the side of the connecting sleeve 257 away from the driving shaft 255 and the driven shaft 259, a side surface of one end of the driving shaft 255 close to the driven shaft 259 is provided with a plurality of evenly distributed driving blocks 2512, and an inner side wall of the connecting sleeve 257 is provided with a plurality of evenly distributed driven blocks 2514 adapted to the driving blocks 2512, and the outer diameter of the driving blocks 2512 is equal to the inner diameter of the connecting sleeve 257;

[0072] Move the connecting sleeve 257 to insert the driven block 2514 between the driving block 2512, so that the driving shaft 255 can drive the driven block 2514 and the connecting sleeve 257 to rotate through the driving block 2512, and the connecting sleeve 257 drives the driven shaft 259 to rotate;

[0073] In order to drive the connecting sleeve 257 to move, a rotating ring 256 is rotatably installed on the connecting sleeve 257, a pull rope 251 is fixedly connected to the rotating ring 256, and a guide plate 252 is fixedly connected to the fixed horizontal plate 21, and one end of the pull rope 251 passes through the first fixed vertical plate 254 and the guide plate 252 in sequence.

[0074] By pulling the pull rope 251, the pull rope 251 drives the connecting sleeve 257 to move through the rotating ring 256, so that one end of the connecting sleeve 257 moves to the outside of the end of the active shaft 255. At this time, multiple driven blocks 2514 and multiple driving blocks 2512 are staggered. The active shaft 255 can drive the driven block 2514 and the connecting sleeve 257 to rotate through the driving block 2512, so that the height of the cutting knife 27 can be adjusted while the cutting knife 27 rotates, which is more convenient to use.

[0075] The present invention provides an intelligent lawn mower using a reversible drive gearbox. In order to reduce the amount of operation of the staff, in this embodiment, the mounting housing 13 is further provided with a distance sensor, which is used to detect the distance between the ground and the cutting blade 27. The fixed horizontal plate 21 is further provided with a first operating mechanism, which is electrically connected to the distance sensor, and one end of the first operating mechanism is connected to the pull rope 251, and the first operating mechanism is used to pull the pull rope 251;

[0076] A second operating mechanism is also installed on the upper cover 2, the output end of the second operating mechanism is connected to the reversing rocker arm 1, the distance sensor is electrically connected to the second operating mechanism, and the second operating mechanism is used to drive the reversing rocker arm 1 to rotate.

[0077] When there is a protrusion on the ground, the distance sensor detects the height of the protrusion and controls the operation of the second operating mechanism and the first operating mechanism, so that the second operating mechanism drives the reversing rocker arm 1 to rotate, so that the reversing rocker arm 1 adjusts the rotation direction of the main drive shaft 20, and then the first operating mechanism pulls the pull rope 251 to move, and the pull rope 251 drives the connecting sleeve 257 to move, so that the driven shaft 259 and the driving shaft 255 rotate synchronously, thereby adjusting the height of the cutting knife 27 to prevent the cutting knife 27 from cutting hard objects. At the same time, the grass is cut at a consistent height, avoiding manual operation and making the device more intelligent.

[0078] like Figure 5-Figure 6 and Figure 12-14 As shown, an intelligent lawn mower using a reversible drive gearbox provided by the present invention, when cleaning the lawn, due to the presence of garbage on the lawn, before mowing the lawn, the staff usually cleans the garbage on the lawn first, and then mows the lawn, which wastes a lot of time and requires the staff to consume a lot of physical strength. Therefore, in this embodiment, a garbage removal mechanism 15 is also installed on the mounting shell 13, and the garbage removal mechanism 15 includes an inner cylinder 153 fixedly installed on the mounting shell 13, and the inner cylinder 153 is a hollow structure, and a A rotating cylinder 152, wherein a first transmission pair 156 is connected between the rotating cylinder 152 and the main driving shaft 20, wherein a plurality of groups of material picking assemblies are fixedly connected to the rotating cylinder 152, wherein the plurality of groups of material picking assemblies are evenly distributed around the axis of the rotating cylinder 152, wherein the plurality of groups of material picking assemblies include a plurality of pick rods 151, wherein the plurality of pick rods 151 are evenly distributed along the axis of the rotating cylinder 152, and a material picking rod 155 is installed at the end of each pick rod 151, wherein the angle between the axis of the material picking rod 155 and the axis of the pick rod 151 is not greater than 120° and not less than 90°;

[0079] When the rotating cylinder 152 rotates, the rotating cylinder 152 drives all the picker bars 151 and the picker bars 155 to rotate, and the picker bars 155 hook the garbage on the lawn and drive the garbage to rotate, thereby cleaning the garbage in front of the cutting blade 27 to prevent the garbage from damaging the cutting blade 27, and the grass on the lawn will pass through the gaps between the picker bars 151;

[0080] In order to collect garbage, a material drop opening 154 is provided at the top of the inner cylinder 153, and a plurality of material drop openings 159 that can communicate with the material drop opening 154 are provided on the rotating cylinder 152, and each of the material drop openings 159 is provided between two adjacent material picking components;

[0081] In order to facilitate cleaning of the garbage inside the inner cylinder 153, a cleaning port communicating with the inside of the inner cylinder 153 is opened on the side of the mounting shell 13, and a cleaning door 157 is provided at the cleaning port.

[0082] When the pick rod 151 drives the garbage to rotate, when the pick rod 151 rotates to the top of the inner tube 153, the garbage will roll down from the pick rod 151 under the action of gravity, and pass through the drop slot 159 and the drop port 154 in sequence, and finally fall into the inner tube 153.

[0083] like Figure 5-Figure 6 and Figure 12-14 As shown, a smart lawn mower using a reversible drive gearbox provided by the present invention is provided. When the garbage on the lawn is a light and soft material, such as a paper towel, it may adhere to the pick-up rod 155, causing the grass to be unable to pass through the gap between the pick-up rods 155. Therefore, in this embodiment, a plurality of combing slits 158 are provided on the mounting housing 13. The positions of the combing slits 158 and the pick-up rod 151 correspond to each other, and the width of the combing slits 158 is slightly larger than the diameter of the pick-up rod 151, for example, the width of the combing slits 158 is 3 to 5 mm larger than the diameter of the pick-up rod 151.

[0084] When the pick rod 151 drives the pick rod 155 to pass through the combing slot 158, the garbage on the pick rod 155 will be blocked by the combing slot 158, and the garbage will be torn into pieces by the combing slot 158 ​​and fall onto the pick rod 151 below, and then slide from the pick rod 151 into the inner cylinder 153;

[0085] However, when the garbage has strong toughness, it is not easy to be torn off and may get stuck in the picking rod 155. Therefore, the picking rod 155 can be arranged to be movable so that the picking rod 155 is rotatably installed at one end of the picking rod 151. A pull rod 1511 is also slidably installed inside the picking rod 151. The end of the pull rod 1511 close to the picking rod 155 is hinged with a connecting rod 1510. One end of the connecting rod 1510 is hinged to one end of the picking rod 155. The other end of the pull rod 1511 passes through the picking rod 151 and abuts against the side of the inner cylinder 153. When the picking rod 151 moves to the bottom of the combing seam 158, one end of the pull rod 1511 is within the range of the drop port 154. A tension spring 1512 is connected between the side of the pull rod 1511 facing away from the inner cylinder 153 and the picking rod 151. Initially, there is an angle between the picking rod 155 and the picking rod 151.

[0086] When the tough garbage is entangled on the picking rod 155, when the picking rod 155 moves to the inside of the combing slot 158, the garbage will first contact the side of the mounting shell 13. Since one end of the pull rod 1511 is within the range of the drop port 154, the inner cylinder 153 no longer blocks the movement of the pull rod 1511, which will cause the mounting shell 13 to squeeze the picking rod 155 to rotate. When the pick rod 151 drives the picking rod 155 to pass through the combing slot 158, the combing slot 158 ​​will scrape the garbage off the picking rod 155, and the garbage will fall onto the pick rod 151 below. After the combing slot 158 ​​no longer blocks the picking rod 155, under the action of the tension spring 1512, the picking rod 155 returns to its original state, which is convenient for picking up materials next time.

[0087] like Figure 5-Figure 6 As shown, a smart lawn mower using a reversible drive gearbox is provided by the present invention. In this embodiment, the power engine 17 is a gasoline engine, and a fuel tank 18 is also installed on the top of the power engine 17. The output end of the fuel tank 18 is connected to the fuel inlet of the power engine 17.

[0088] Of course, the power engine 17 is not limited to a gasoline engine, but may also be an electric engine, or any engine that can provide power output.

[0089] like Figure 5-Figure 6 As shown, an intelligent lawn mower using a reversible drive gearbox provided by the present invention is provided. In this embodiment, a handlebar 19 is also fixedly mounted on the main gearbox 6 to facilitate the staff to manually push the lawn mower.

[0090] Working principle:

[0091] Start the power engine 17, the power engine 17 drives the main gearbox 6 to move. When the main gearbox 6 is in different gears, the movement speed and direction of the rear drive wheel 16 are different. At the same time, the main gearbox 6 will also drive the output active bevel gear 4 to rotate, and the output active bevel gear 4 will drive the two reversing passive bevel gears 10 and the two reversing bushings 11 to rotate. When the meshing sleeve 12 is meshed with different reversing bushings 11, the meshing sleeve 12 drives the output shaft 7 to rotate in different directions.

[0092] When mowing, the worker holds the handlebar 19 to push the device to move, and adjusts the gear of the main gearbox 6 to the forward gear. The main gearbox 6 will drive the rear drive wheel 16 to rotate, so that the rear drive wheel 16 drives the device to move. The worker does not need to push hard, and the worker only needs to control the direction.

[0093] When the device moves on the lawn, the output shaft 7 drives the main drive shaft 20 to rotate through the second transmission pair 22, the main drive shaft 20 drives the rotating cylinder 152 to rotate through the first transmission pair 156, the rotating cylinder 152 drives the digging rod 151 and the picking rod 155 to collect the garbage in front of the device in the forward direction into the inner cylinder 153, and at the same time, the main drive shaft 20 drives the first bevel gear 241 to rotate, the first bevel gear 241 drives the second bevel gear 243 and the cutting shaft 26 to rotate, the cutting shaft 26 drives the cutting knife 27 to rotate, and the cutting knife 27 cuts the grass;

[0094] When the height of the cutting knife 27 needs to be adjusted, the pull rope 251 is pulled, and the pull rope 251 drives the connecting sleeve 257 to move through the rotating ring 256, so that one end of the connecting sleeve 257 moves to the outside of the end of the driving shaft 255, and the driving shaft 255 drives the driven clamping block 2514 and the connecting sleeve 257 to rotate through the driving clamping block 2512, and the connecting sleeve 257 drives the driven shaft 259 to rotate, and the driven shaft 259 drives the screw 2511 to rotate through the fourth transmission pair 2510, and the screw 2511 drives the lifting cutting knife frame 23 to rise and fall, and the lifting cutting knife frame 23 drives the cutting shaft 26 and the cutting knife 27 to rise and fall, so that the height of the cutting knife 27 can be adjusted while the cutting knife 27 is rotating, so that the grass can be cut into different heights according to different terrains of the lawn;

[0095] Moreover, when one end of the cutting knife 27 is stuck in an obstacle, the rotation direction of the output shaft 7 can be adjusted, and the output shaft 7 drives the cutting knife 27 to rotate in the opposite direction, so that the cutting knife 27 is out of the range of the obstacle, and the staff does not need to manually pull out the cutting knife 27, which is more convenient to use.

[0096] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0097] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A reversible drive gearbox, comprising an output housing (5), the output housing (5) being mounted on a main gearbox (6), an output driving bevel gear (4) being rotatably mounted inside the output housing (5), one end of the output driving bevel gear (4) being fixedly mounted to the output end of the main gearbox (6), characterized in that: An output shaft (7) is rotatably mounted inside the output housing (5), one end of the output shaft (7) protruding from the output housing (5), and one end of the output shaft (7) located inside the output housing (5) is rotatably mounted with two reversing bushings (11), both of which are fixedly mounted with reversing passive bevel gears (10), the two reversing passive bevel gears (10) are respectively located on both sides of the output active bevel gear (4), and the two reversing passive bevel gears (10) are meshedly connected with the output active bevel gear (4); A shift fork shaft (8) is also fixedly installed inside the output housing (5), a reversing shift fork (3) is slidably installed on the shift fork shaft (8), one end of the reversing shift fork (3) is rotatably connected with a meshing sleeve (12), the meshing sleeve (12) is slidably installed on the output shaft (7), the meshing sleeve (12) is located between the two reversing bushings (11), and the width of the meshing sleeve (12) is smaller than the width of the interval between the two reversing bushings (11), the ends of the two reversing bushings (11) close to the meshing sleeve (12) are both provided with external teeth, the inner side surface of the meshing sleeve (12) is provided with internal teeth, and the meshing sleeve (12) can mesh with the two reversing bushings (11) respectively; An upper cover (2) is also fixedly mounted on the output box body (5), and a reversing rocker arm (1) is rotatably mounted on the upper cover (2). One end of the reversing rocker arm (1) located inside the output box body (5) is rotatably connected to a reversing fork (3).

2. The reversible drive gearbox according to claim 1, characterized in that: A retaining ring (9) is provided between the two reversing passive bevel gears (10) and the output housing (5).

3. An intelligent lawn mower using the reversible drive gearbox as claimed in claim 1 or 2, characterized in that: The invention comprises a reversible drive gearbox and a main gearbox (6), wherein the reversible drive gearbox is mounted on the power output end of the main gearbox (6), a rear drive wheel (16) is mounted on the walking end of the main gearbox (6), a power engine (17) is fixedly mounted on the side of the main gearbox (6), the output end of the power engine (17) is fixedly connected to the input end of the main gearbox (6), and a handlebar (19) is also fixedly mounted on the main gearbox (6); A mounting shell (13) is fixedly mounted on the side of the main gearbox (6), and a front wheel (14) is rotatably mounted on one end of the mounting shell (13); A main drive shaft (20) is rotatably mounted inside the mounting shell (13), and the main drive shaft (20) and the output shaft (7) are transmission-connected via a second transmission pair (22). A fixed transverse plate (21) is also fixedly connected inside the mounting shell (13), and a lifting cutting blade holder (23) is slidably mounted on the fixed transverse plate (21). A cutting shaft (26) is rotatably mounted at the bottom of the lifting cutting blade holder (23) close to the ground, and a cutting blade (27) is fixedly connected to the bottom end of the cutting shaft (26); A first transmission mechanism (24) is connected between the main drive shaft (20) and the cutting shaft (26), and the main drive shaft (20) can drive the cutting shaft (26) to rotate through the first transmission mechanism (24); A second transmission mechanism (25) is installed on the fixed transverse plate (21), one end of the second transmission mechanism (25) is transmission-connected to the top of the lifting cutting blade frame (23), and the other end of the second transmission mechanism (25) is transmission-connected to the main drive shaft (20). When the main drive shaft (20) rotates, the second transmission mechanism (25) can drive the lifting cutting blade frame (23) to rise and fall.

4. The intelligent lawn mower using a reversible drive gearbox according to claim 3, characterized in that: The first transmission mechanism (24) comprises a first bevel gear (241) and a mounting frame (244); the first bevel gear (241) is fixedly mounted on the main drive shaft (20); the mounting frame (244) is rotatably mounted on the main drive shaft (20); a second bevel gear (243) is rotatably mounted on the mounting frame (244); the second bevel gear (243) is meshingly connected with the first bevel gear (241); and the second bevel gear (243) is slidably mounted on the cutting shaft (26).

5. The intelligent lawn mower using a reversible drive gearbox according to claim 3, characterized in that: The second transmission mechanism (25) comprises a second fixed vertical plate (258) fixedly connected to the fixed horizontal plate (21); a driven shaft (259) is rotatably mounted on the second fixed vertical plate (258); a screw rod (2511) is rotatably mounted on the fixed horizontal plate (21); one end of the screw rod (2511) is threadedly connected to the top of the lifting cutting blade holder (23); and a fourth transmission pair (2510) is connected between the driven shaft (259) and the screw rod (2511); A first fixed vertical plate (254) is fixedly connected to the fixed horizontal plate (21), a driving shaft (255) is rotatably mounted on the first fixed vertical plate (254), and a third transmission pair (253) is connected between the driving shaft (255) and the main drive shaft (20); A synchronization component is provided between the driving shaft (255) and the driven shaft (259), and the synchronization component is used to enable the driving shaft (255) and the driven shaft (259) to move synchronously.

6. The intelligent lawn mower using a reversible drive gearbox according to claim 5, characterized in that: The synchronization component comprises a connecting sleeve (257) slidably mounted on a driven shaft (259); a compression spring (2513) is connected between the side of the connecting sleeve (257) facing away from the driving shaft (255) and the driven shaft (259); a plurality of evenly distributed driving blocks (2512) are arranged on the side of one end of the driving shaft (255) close to the driven shaft (259); a plurality of evenly distributed driven blocks (2514) are arranged on the inner side wall of the connecting sleeve (257) and are matched with the driving blocks (2512); the outer diameter of the driving blocks (2512) is equal to the inner diameter of the connecting sleeve (257); A rotating ring (256) is rotatably mounted on the connecting sleeve (257), a pull rope (251) is fixedly connected to the rotating ring (256), a guide plate (252) is fixedly connected to the fixed horizontal plate (21), and one end of the pull rope (251) passes through the first fixed vertical plate (254) and the guide plate (252) in sequence.

7. The intelligent lawn mower using a reversible drive gearbox according to claim 6, characterized in that: The mounting housing (13) is also provided with a distance sensor, and the fixed transverse plate (21) is also provided with a first operating mechanism, the first operating mechanism is electrically connected to the distance sensor, one end of the first operating mechanism is connected to a pull rope (251), and the first operating mechanism is used to pull the pull rope (251); A second operating mechanism is also mounted on the upper cover (2), the output end of the second operating mechanism is connected to the reversing rocker arm (1), the distance sensor is electrically connected to the second operating mechanism, and the second operating mechanism is used to drive the reversing rocker arm (1) to rotate.

8. The intelligent lawn mower using a reversible drive gearbox according to claim 3, characterized in that: A garbage removal mechanism (15) is also installed on the installation shell (13), and the garbage removal mechanism (15) includes an inner cylinder (153) fixedly installed on the installation shell (13), the inner cylinder (153) is a hollow structure, a rotating cylinder (152) is rotatably installed on the inner cylinder (153), a first transmission pair (156) is connected between the rotating cylinder (152) and the main driving shaft (20), and a plurality of groups of material picking assemblies are fixedly connected to the rotating cylinder (152), and the plurality of groups of material picking assemblies are evenly distributed around the axis of the rotating cylinder (152), and the plurality of groups of material picking assemblies include a plurality of pick rods (151), and the plurality of pick rods (151) are equidistantly distributed along the axis of the rotating cylinder (152), and a material picking rod (155) is installed at the end of each pick rod (151), and the angle between the axis of the pick rod (155) and the axis of the pick rod (151) is not greater than 120° and not less than 90°; The inner cylinder (153) is provided with a material drop opening (154) at the top, and the rotating cylinder (152) is provided with a plurality of material drop slots (159) that can communicate with the material drop opening (154), and each of the material drop slots (159) is arranged between two adjacent groups of material picking components; A cleaning port communicating with the interior of the inner cylinder (153) is provided on the side of the mounting shell (13), and a cleaning door (157) is provided at the cleaning port.

9. The intelligent lawn mower using a reversible drive gearbox according to claim 8, characterized in that: The mounting shell (13) is provided with a plurality of combing slits (158), the positions of the combing slits (158) and the pick rod (151) correspond to each other, and the width of the combing slits (158) is 3 to 5 mm larger than the diameter of the pick rod (151); The picking rod (155) is rotatably mounted on one end of the picking rod (151), and a pull rod (1511) is slidably mounted inside the picking rod (151). The pull rod (1511) is hinged with a connecting rod (1510) at one end close to the picking rod (155), and one end of the connecting rod (1510) is hinged to one end of the picking rod (155). The other end of the pull rod (1511) passes through the picking rod (151) and abuts against the side of the inner cylinder (153). When the picking rod (151) moves to the bottom of the combing seam (158), one end of the pull rod (1511) is within the range of the drop port (154). A tension spring (1512) is connected between the side of the pull rod (1511) facing away from the inner cylinder (153) and the picking rod (151). Initially, the angle between the picking rod (155) and the picking rod (151) is an obtuse angle.

10. The intelligent lawn mower using a reversible drive gearbox according to claim 3, characterized in that: The power engine (17) is a gasoline engine. A fuel tank (18) is also installed on the top of the power engine (17). The output end of the fuel tank (18) is connected to the fuel inlet of the power engine (17).

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