Novel orchard obstacle avoidance mower

Abstract

The utility model discloses a novel orchard obstacle avoidance mower, which relates to the technical field of mowers and comprises a driving bottom frame, two extension moving supports are fixedly mounted on the rear side of the driving bottom frame, moving adjusting mechanisms are arranged at the rear ends of the two extension moving supports, and an obstacle avoidance mechanism is arranged on the right side of the driving bottom frame. A motor support is fixedly installed on the left side of the top of the driving bottom frame, a servo motor is fixedly installed on the right side of the motor support, a belt wheel is fixedly installed on an output shaft of the servo motor, and three first fixing cylinders are evenly and fixedly installed on the rear side of the driving bottom frame. Through mutual cooperation of the movable support, the inter-plant obstacle avoidance cutter head, the second driven belt pulley, the protective tire and the automatic reset mechanism, the inter-plant obstacle avoidance cutter head can automatically avoid fruit trees, meanwhile, an original tension spring can be prevented from being blocked by weeds, the situation that the inter-plant obstacle avoidance cutter head cannot normally and rapidly reset in the weeding process is avoided, and the weeding efficiency is improved. And the stability of automatic obstacle avoidance is improved.

Description

Technical Field

[0001] This utility model relates to the field of lawnmower technology, specifically to a new type of orchard obstacle avoidance lawnmower. Background Technology

[0002] Orchard planting and management differs from other agricultural models. For example, during the fruit tree's growth period, a large amount of weeds will grow under the tree. To improve mowing efficiency, lawnmowers are often used for clearing the weeds. However, because the fruit trees and weeds are close together, to prevent the lawnmower from damaging the branches and trunks of the fruit trees, lawnmowers with obstacle avoidance functions are used. Orchard obstacle avoidance lawnmowers are mainly pulled by tractors and consist of several inter-row cutting blades and one inter-tree obstacle avoidance blade. The inter-tree obstacle avoidance blade extends to one side and is mainly responsible for cutting weeds between fruit trees. When encountering fruit trees, it can use compression springs to avoid obstacles. The following problems exist with existing technologies:

[0003] Because existing orchard obstacle-avoiding mowers mainly rely on tension springs and tires with a diameter larger than the mower head for obstacle avoidance, when encountering fruit trees, the tires are squeezed to move the obstacle-avoiding mower head away from the fruit trees. After passing the fruit trees, it can return to its original position under the action of the tension spring. However, since the tension spring is located on the front side of the support that controls the obstacle avoidance of the mower head, when there are many weeds and they are tall, a large amount of weeds will block the tension spring, causing the tension spring to fail to return to its original position. As a result, the obstacle-avoiding mower head cannot return to its original position after avoiding the obstacle and can continue mowing, which has certain limitations. Utility Model Content

[0004] This utility model provides a novel orchard obstacle-avoiding mower to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A novel orchard obstacle-avoiding mower includes a drive base frame. Two extended movable supports are fixedly installed on the rear side of the drive base frame. Each of the two extended movable supports has a movable adjustment mechanism at its rear end. An obstacle-avoiding mechanism is provided on the right side of the drive base frame. A motor bracket is fixedly installed on the top left side of the drive base frame. A servo motor is fixedly installed on the right side of the motor bracket. A pulley is fixedly installed on the output shaft of the servo motor. Three fixed cylinders are evenly fixedly installed on the rear side of the drive base frame. A driven pulley is provided above each of the three fixed cylinders. A rotating rod is fixedly installed at the bottom center of each of the three driven pulleys. The rotating rod is movably connected to the inner ring of the fixed cylinder. The bottom end of the rotating rod extends through to the bottom of the fixed cylinder and is fixedly installed with an inter-row mowing blade.

[0007] The obstacle avoidance mechanism includes a movable support. The left end of the movable support is movably connected to the outer wall of the rightmost fixed cylinder one. A fixed cylinder two is fixedly installed at the right end of the movable support. A driven pulley two is arranged above the fixed cylinder two. A drive rod that is movably connected to the inner ring of the fixed cylinder two is fixedly installed at the bottom end of the driven pulley two. The bottom end of the drive rod extends through to the bottom of the fixed cylinder two and is fixedly installed with an inter-plant obstacle avoidance cutter disc. A protective tire is movably installed on the outer wall of the fixed cylinder two. An automatic reset mechanism is arranged on the left rear end of the movable support.

[0008] A further improvement of the present invention is that: the outer wall of the driven pulley at the top of the leftmost fixed cylinder is connected to the outer wall of the pulley by a belt 1, the outer walls of the two adjacent driven pulleys are connected by a belt 2, and the outer wall of the driven pulley at the top of the rightmost fixed cylinder is connected to the outer wall of the driven pulley 2 by a belt 3.

[0009] A further improvement of the present invention is that a triangular bracket is fixedly installed on the top front side of the drive base frame, and two mounting plates are fixedly installed on the top of the triangular bracket. Both mounting plates are provided with locking adjustment holes that pass through from left to right.

[0010] A further improvement of this utility model is that: a protective chain is provided between the opposing surfaces of the two extended movable supports; a movable rod is movably installed on the right side of the right extended movable support; several protective chains are fixedly installed at the bottom of the movable rod; a connecting rod is movably installed at the right end of the movable rod; and the other end of the connecting rod is movably connected to the right rear end of the movable support.

[0011] A further improvement of this utility model is that the automatic reset mechanism includes a fixed box, which is fixedly installed on the right side of the right-side extended movable bracket. The fixed box is located in front of the movable rod. A movable groove is opened on the right side of the fixed box. A sliding rod is fixedly installed between the front and rear sides of the inner wall of the movable groove. A slider is slidably installed on the outer wall of the sliding rod. A movable pressure rod is movably installed at the right end of the slider. The other end of the movable pressure rod is movably connected to the left rear end of the movable bracket. A reset metal spring is fixedly installed on the rear side of the slider. The sliding rod is located inside the reset metal spring. Two resistance-reducing pulleys are fixedly installed on the left side of the slider. The left sides of the two resistance-reducing pulleys overlap with the left side of the inner wall of the movable groove opened in the fixed box.

[0012] A further improvement of this utility model is that: both of the movable adjustment mechanisms include adjustment boxes, the two adjustment boxes are respectively fixedly installed at the rear ends of two extended movable supports, lifting grooves are opened on the opposite surfaces of the two adjustment boxes, lifting threaded rods are movably installed on the bottom of the inner walls of the two lifting grooves, the top ends of the two lifting threaded rods respectively penetrate to the top of the two adjustment boxes and are fixedly installed with rotating handles, lifting blocks are threadedly installed on the outer walls of the two lifting threaded rods, telescopic boxes are fixedly installed on the opposite surfaces of the two lifting blocks, and movable tires are provided on the opposite surfaces of the two telescopic boxes.

[0013] A further improvement of this utility model is that: telescopic grooves are provided on the opposite surfaces of the two telescopic boxes; springs are fixedly installed on the top of the inner walls of the two telescopic grooves; telescopic blocks are fixedly installed on the bottom ends of the two springs; the opposite surfaces of the two telescopic blocks are movably connected to the opposite back shafts of the two movable tires; the two telescopic blocks are slidably connected to the two telescopic grooves; hydraulic shock absorbers are fixedly installed on the top of the two telescopic blocks; the hydraulic shock absorbers are located inside the springs; and the top ends of the two hydraulic shock absorbers are fixedly connected to the top of the inner walls of the two telescopic grooves.

[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0015] 1. This utility model provides a novel orchard obstacle-avoiding mower. Through the cooperation of the movable support, the inter-tree obstacle-avoiding cutter disc, the driven pulley, the protective tire, and the automatic reset mechanism, the inter-tree obstacle-avoiding cutter disc can automatically avoid obstacles in fruit trees while preventing the original tension spring from being blocked by weeds. This avoids the inter-tree obstacle-avoiding cutter disc from failing to reset normally and quickly during weeding, thus improving the stability of automatic obstacle avoidance.

[0016] 2. This utility model provides a new type of orchard obstacle avoidance mower. Through the cooperation between the mounting plate, locking adjustment hole, and moving adjustment mechanism, the height of multiple inter-row mowing blades and one inter-plant obstacle avoidance blade can be quickly adjusted. While the mowing height can be quickly adjusted, the retractable and spring-loaded moving tires can also improve the stability of the orchard obstacle avoidance mower when moving on uneven soil surfaces. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the drive base frame and obstacle avoidance mechanism of the present invention.

[0019] Figure 3 This is a schematic diagram of the automatic reset mechanism of the present invention.

[0020] Figure 4 This is a schematic diagram of the movable adjustment mechanism of the present invention.

[0021] Figure 5 This is a cross-sectional schematic diagram of the telescopic box structure of this utility model.

[0022] In the diagram: 1. Drive base frame; 11. Triangular bracket; 111. Mounting plate; 112. Locking adjustment hole; 12. Motor bracket; 121. Servo motor; 13. Pulley; 14. Fixed cylinder one; 141. Driven pulley one; 142. Inter-row mowing blade; 2. Extending movable bracket; 21. Protective chain one; 22. Movable rod; 221. Protective chain two; 222. Connecting rod; 3. Obstacle avoidance mechanism; 31. Movable bracket; 32. Fixed cylinder two; 33. Inter-row obstacle avoidance blade; 34. From 35. Protective tire; 36. Automatic reset mechanism; 361. Fixed box; 362. Slide bar; 363. Slider; 364. Movable pressure bar; 365. Reset metal spring; 366. Resistance reducing pulley; 4. Moving adjustment mechanism; 41. Adjustment box; 42. Lifting slide; 43. Lifting threaded rod; 44. Rotating handle; 45. Lifting block; 46. Telescopic box; 461. Telescopic groove; 462. Spring; 463. Telescopic block; 464. Hydraulic shock absorber; 47. Moving tire. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] like Figure 1 , Figure 2As shown, this utility model provides a novel orchard obstacle-avoiding lawn mower, including a drive base frame 1. Two extended movable supports 2 are fixedly installed on the rear side of the drive base frame 1, and each of the two extended movable supports 2 has a movable adjustment mechanism 4 at its rear end. An obstacle-avoiding mechanism 3 is provided on the right side of the drive base frame 1. A motor bracket 12 is fixedly installed on the top left side of the drive base frame 1, and a servo motor 121 is fixedly installed on the right side of the motor bracket 12. A pulley 13 is fixedly installed on the output shaft of the servo motor 121. Three fixed cylinders 14 are evenly fixedly installed on the rear side of the drive base frame 1, with the three fixed cylinders 14 positioned above... Each of the three driven pulleys 141 is equipped with a driven pulley 141. A rotating rod is fixedly installed at the center of the bottom of each driven pulley 141, and the rotating rod is movably connected to the inner ring of the fixed cylinder 14. The bottom end of the rotating rod extends through to the bottom of the fixed cylinder 14 and is fixedly installed with a row-to-row mowing blade 142. The obstacle avoidance mechanism 3 includes a movable support 31. The left end of the movable support 31 is movably connected to the outer wall of the rightmost fixed cylinder 14. A fixed cylinder 32 is fixedly installed at the right end of the movable support 31. A driven pulley 34 is located above the fixed cylinder 32. The bottom end of the driven pulley 34 is fixedly installed with a drive cylinder 34. 2. The inner ring is movably connected to the drive rod. The bottom end of the drive rod extends through to the bottom of the second fixed cylinder 32 and is fixedly installed with the inter-plant obstacle avoidance cutter disc 33. The outer wall of the second fixed cylinder 32 is movably installed with a protective tire 35. An automatic reset mechanism 36 is provided on the left rear end of the movable bracket 31. The outer wall of the driven pulley 141 at the top of the leftmost fixed cylinder 14 is connected to the outer wall of the pulley 13 by a belt 1. The outer walls of the two adjacent driven pulleys 141 are connected by a belt 2. The outer wall of the driven pulley 141 at the top of the rightmost fixed cylinder 14 is connected to the outer wall of the driven pulley 34 by a belt 2. The top front side of the drive base frame 1 is fixedly installed with a triangular bracket 11. The top of the triangular bracket 11 is fixedly installed with two mounting plates 111. Both mounting plates 111 are provided with locking adjustment holes 112 that pass through from left to right. A protective chain 21 is provided between the opposite faces of the two extended movable brackets 2. A movable rod 22 is movably installed on the right side of the right extended movable bracket 2. Several protective chains 221 are fixedly installed at the bottom of the movable rod 22. A connecting rod 222 is movably installed at the right end of the movable rod 22. The other end of the connecting rod 222 is movably connected to the rear right side of the movable bracket 31.

[0025] In use, the drive base frame 1 is fixed to the tractor's rear hook using bolts through the corresponding locking adjustment holes 112 on the two mounting plates 111 on the top of the triangular bracket 11, according to the required weeding height. Then, the servo motor 121 on the right side of the motor bracket 12 is started to drive the pulley 13 to rotate. The pulley 13 drives the driven pulley 141 to rotate via belt one. The three driven pulleys 141 are interconnected via belt two, thereby synchronously driving the inter-row cutting blades 142 at the bottom of the three fixed cylinders 14 to rotate, cutting the passing weeds. At the same time, the rightmost driven pulley 141 is connected to the driven pulley via belt three. The transmission connection of the second 34 can drive the inter-tree obstacle avoidance cutter disc 33 at the bottom of the fixed cylinder second 32 to rotate and cut grass. At the same time, the protective chain first 21 and the protective chain second 221 can be used to flatten the weeds. The overall inter-tree obstacle avoidance cutter disc 33 is positioned between the fruit trees. When it encounters a fruit tree, it will first squeeze the protective tire 35, so that the fixed cylinder second 32 can rotate backward through the movable connection between the movable bracket 31 and the outer wall of the rightmost fixed cylinder first 14. During the movement, the belt third can still transmit normally. At the same time, the connecting rod 222 will be used to squeeze the protective chain second 221, so that the movable rod 22 will also rotate with the rotation of the movable bracket 31, avoiding the movable bracket 31 from hitting the movable rod 22.

[0026] like Figure 3 As shown, the automatic reset mechanism 36 includes a fixed box 361, which is fixedly installed on the right side of the right extended movable bracket 2. The fixed box 361 is located in front of the movable rod 22. A movable groove is opened on the right side of the fixed box 361. A slide rod 362 is fixedly installed between the front and rear sides of the inner wall of the movable groove. A slider 363 is slidably installed on the outer wall of the slide rod 362. A movable pressure rod 364 is movably installed on the right end of the slider 363. The other end of the movable pressure rod 364 is movably connected to the left rear end of the movable bracket 31. A reset metal spring 365 is fixedly installed on the rear side of the slider 363. The slide rod 362 is located inside the reset metal spring 365. Two resistance-reducing pulleys 366 are fixedly installed on the left side of the slider 363. The left sides of the two resistance-reducing pulleys 366 overlap with the left side of the inner wall of the movable groove opened in the fixed box 361.

[0027] When the movable support 31 rotates backward, the movable pressure rod 364 connected to the rear side moves in conjunction with the slider 363, thereby pressing the slider 363 in the moving slot of the fixed box 361 backward. This causes the slider 363 to move stably backward on the outer wall of the slide rod 362, compressing the return metal spring 365. During the movement, the sliding of the drag-reducing pulley 366 reduces frictional resistance and improves the smoothness of sliding. Once the protective tire 35 drives the inter-tree obstacle avoidance blade 33 past the fruit tree, the rebound action of the return metal spring 365 presses the slider 363 back into place. The movable pressure rod 364 then resets the movable support 31, completing the obstacle avoidance of the fruit tree. Because the overall automatic reset mechanism 36 is located at the rear of the movable support 31, it can effectively prevent weeds from affecting the rebound mechanism.

[0028] like Figure 4 , Figure 5 As shown, both movable adjustment mechanisms 4 include adjustment boxes 41. The two adjustment boxes 41 are respectively fixedly installed at the rear ends of the two extended movable supports 2. Each of the two adjustment boxes 41 has a lifting groove 42 on its opposite surface. A lifting threaded rod 43 is movably installed on the bottom of the inner wall of each of the two lifting grooves 42. The top ends of each of the two lifting threaded rods 43 extend through to the top of each of the two adjustment boxes 41 and are fixedly installed with a rotating handle 44. Lifting blocks 45 are threaded onto the outer walls of each of the two lifting threaded rods 43. Telescopic boxes 46 are fixedly installed on the opposite surfaces of each of the two lifting blocks 45. Movable tires 47 are provided on the opposite surfaces of each of the two telescopic boxes 46. Each telescopic box 46 has a telescopic groove 461 on its opposite side. A spring 462 is fixedly installed on the top of the inner wall of each of the two telescopic grooves 461. A telescopic block 463 is fixedly installed on the bottom of each of the two springs 462. The opposite sides of the two telescopic blocks 463 are movably connected to the opposite back shafts of the two movable tires 47. The two telescopic blocks 463 are slidably connected to the two telescopic grooves 461. A hydraulic shock absorber 464 is fixedly installed on the top of each of the two telescopic blocks 463. The hydraulic shock absorber 464 is located inside the spring 462. The top of the two hydraulic shock absorbers 464 is fixedly connected to the top of the inner wall of each of the two telescopic grooves 461.

[0029] When the tractor adjusts the height according to the locking adjustment hole 112, in order to ensure the levelness of the drive base frame 1, the rotating handle 44 on the top of the two adjustment boxes 41 can be rotated, thereby driving the lifting threaded rod 43 in the lifting slide 42 to rotate. With the threaded connection between the lifting threaded rod 43 and the lifting block 45, the lifting block 45, the telescopic box 46 fixed on one side of the lifting block 45, and the moving tire 47 can be driven to move downward until the drive base frame 1 is level, thus improving the adjustment speed. At the same time, since the ground of the fruit tree planting area is soil, there is an uneven phenomenon. Therefore, when the moving tire 47 moves with the tractor, the spring 462 in the inner cavity of the telescopic groove 461 is squeezed by the telescopic block 463, thereby providing shock absorption and buffering, making one end of the drive base frame 1 more stable and preventing uneven cutting of weeds. At the same time, the extension and retraction of the hydraulic shock absorber 464 can absorb the excess elastic energy generated after the spring 462 is compressed, preventing the moving tire 47 from repeatedly bouncing up and down.

[0030] The working principle of this new type of orchard obstacle-avoiding lawn mower will be explained in detail below.

[0031] like Figure 1-5As shown, in use, the drive base frame 1 is fixed to the tractor rear hook by bolts through the corresponding locking adjustment holes 112 using the two mounting plates 111 on the top of the triangular bracket 11 to the desired weeding height. Then, the servo motor 121 on the right side of the motor bracket 12 can be started to drive the pulley 13 to rotate. The pulley 13 drives the driven pulley 141 to rotate via belt one. The three driven pulleys 141 are interconnected by belt two, so that the inter-row cutting blades 142 at the bottom of the three fixed cylinders 14 are synchronously driven to rotate, cutting the passing weeds. At the same time, the rightmost driven pulley 141 is connected to the driven pulley 2 34 via belt three to drive the inter-row cutting blades at the bottom of the fixed cylinder 2 32. The obstacle-avoiding cutter head 33 rotates to cut grass, while simultaneously using protective chains 21 and 221 to flatten the weeds. Positioned between fruit trees, the obstacle-avoiding cutter head 33 first compresses the protective tires 35 upon encountering a tree, causing the fixed cylinder 32 to rotate backward via the movable connection between the movable bracket 31 and the outer wall of the rightmost fixed cylinder 14. During this movement, the belt 3 continues to transmit power normally, and the connecting rod 222 compresses the protective chain 221, causing the movable rod 22 to rotate along with the movable bracket 31, preventing the movable bracket 31 from hitting the movable rod 22. Simultaneously, as the movable bracket 31 rotates backward, the movable pressure rod 364 connected to the rear side is connected to the slider 363, thus ensuring the stability of the fixed cylinder. The slider 363 in the movable groove of box 361 is pressed backward, so that the slider 363 moves stably backward on the outer wall of the slide bar 362, compressing the return metal spring 365. During the movement, the sliding of the drag-reducing pulley 366 reduces frictional resistance and improves the smoothness of sliding. Once the protective tire 35 drives the inter-tree obstacle avoidance cutter disc 33 past the fruit tree, the rebound action of the return metal spring 365 presses the slider 363 back to its original position. Then, the movable support 31 is reset by the movable pressure rod 364, completing the obstacle avoidance of the fruit tree. Since the overall automatic reset mechanism 36 is located on the rear side of the movable support 31, it can effectively prevent weeds from affecting the rebound mechanism. When the tractor adjusts the height according to the locking adjustment hole 112, To ensure the levelness of the drive base frame 1, the rotating handles 44 on the top of the two adjusting boxes 41 are rotated, which in turn rotates the lifting threaded rod 43 inside the lifting slide 42. This, combined with the threaded connection between the lifting threaded rod 43 and the lifting block 45, drives the lifting block 45, the telescopic box 46 fixed to one side of the lifting block 45, and the movable tire 47 downwards until the drive base frame 1 is level. This increases the adjustment speed. Furthermore, since the ground in the fruit tree planting area is soil and uneven, when the movable tire 47 moves with the tractor, the telescopic block 463 compresses the spring 462 inside the telescopic groove 461, thus providing shock absorption and buffering, making one end of the drive base frame 1 more stable and preventing uneven cutting of weeds.Simultaneously, the extension and retraction of the hydraulic shock absorber 464 can absorb the excess elastic energy generated after the spring 462 is compressed, preventing the moving tire 47 from repeatedly bouncing up and down.

[0032] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A novel orchard obstacle-avoiding lawn mower, comprising a drive base frame (1), characterized in that: Two extended moving brackets (2) are fixedly installed on the rear side of the drive base frame (1). The rear ends of the two extended moving brackets (2) are provided with moving adjustment mechanisms (4). An obstacle avoidance mechanism (3) is provided on the right side of the drive base frame (1). A motor bracket (12) is fixedly installed on the top left side of the drive base frame (1). A servo motor (121) is fixedly installed on the right side of the motor bracket (12). A pulley (13) is fixedly installed on the output shaft of the servo motor (121). Three fixed cylinders (14) are evenly fixedly installed on the rear side of the drive base frame (1). A driven pulley (141) is provided above each of the three fixed cylinders (14). A rotating rod is fixedly installed at the bottom center of each of the three driven pulleys (141). The rotating rod is movably connected to the inner circle of the fixed cylinder (14). The bottom end of the rotating rod extends through to the bottom of the fixed cylinder (14) and is fixedly installed with a row cutting blade (142). The obstacle avoidance mechanism (3) includes a movable bracket (31). The left end of the movable bracket (31) is movably connected to the outer wall of the rightmost fixed cylinder (14). The right end of the movable bracket (31) is fixedly installed with a fixed cylinder (32). A driven pulley (34) is provided above the fixed cylinder (32). A drive rod that is movably connected to the inner ring of the fixed cylinder (32) is fixedly installed at the bottom end of the driven pulley (34). The bottom end of the drive rod extends through to the bottom of the fixed cylinder (32) and is fixedly installed with an inter-plant obstacle avoidance cutter disc (33). A protective tire (35) is movably installed on the outer wall of the fixed cylinder (32). An automatic reset mechanism (36) is provided on the left side of the rear end of the movable bracket (31).

2. The novel orchard obstacle-avoiding mower according to claim 1, characterized in that: The outer wall of the driven pulley 1 (141) at the top of the leftmost fixed cylinder 1 (14) is connected to the outer wall of the pulley (13) by a belt 1. The outer walls of the two adjacent driven pulleys 1 (141) are connected by a belt 2. The outer wall of the driven pulley 1 (141) at the top of the rightmost fixed cylinder 1 (14) is connected to the outer wall of the driven pulley 2 (34) by a belt 3.

3. The novel orchard obstacle-avoiding mower according to claim 1, characterized in that: A triangular bracket (11) is fixedly installed on the top front side of the drive base frame (1). Two mounting plates (111) are fixedly installed on the top of the triangular bracket (11). Both mounting plates (111) are provided with locking adjustment holes (112) that pass through from left to right.

4. The novel orchard obstacle-avoiding mower according to claim 1, characterized in that: A protective chain (21) is provided between the opposite faces of the two extended movable supports (2). A movable rod (22) is movably installed on the right side of the right extended movable support (2). Several protective chains (221) are fixedly installed at the bottom of the movable rod (22). A connecting rod (222) is movably installed at the right end of the movable rod (22). The other end of the connecting rod (222) is movably connected to the right rear end of the movable support (31).

5. A novel orchard obstacle-avoiding mower according to claim 1, characterized in that: The automatic reset mechanism (36) includes a fixed box (361), which is fixedly installed on the right side of the right-side extended movable bracket (2). The fixed box (361) is located in front of the movable rod (22). A movable groove is provided on the right side of the fixed box (361). A sliding rod (362) is fixedly installed between the front and rear sides of the inner wall of the movable groove. A slider (363) is slidably installed on the outer wall of the sliding rod (362). A movable part is installed at the right end of the slider (363). The movable pressure rod (364) is movably connected at one end to the left rear end of the movable bracket (31). A return metal spring (365) is fixedly installed on the rear side of the slider (363). The slide rod (362) is located inside the return metal spring (365). Two drag-reducing pulleys (366) are fixedly installed on the left side of the slider (363). The left sides of the two drag-reducing pulleys (366) overlap with the left side of the inner wall of the moving groove opened in the fixed box (361).

6. A novel orchard obstacle-avoiding lawn mower according to claim 1, characterized in that: Both of the aforementioned movable adjustment mechanisms (4) include adjustment boxes (41). The two adjustment boxes (41) are respectively fixedly installed at the rear ends of the two extended movable supports (2). The opposing surfaces of the two adjustment boxes (41) are provided with lifting slide grooves (42). Lifting threaded rods (43) are movably installed at the bottom of the inner walls of the two lifting slide grooves (42). The top ends of the two lifting threaded rods (43) respectively penetrate to the top of the two adjustment boxes (41) and are fixedly installed with rotating handles (44). Lifting blocks (45) are threadedly installed on the outer walls of the two lifting threaded rods (43). Telescopic boxes (46) are fixedly installed on the opposing surfaces of the two lifting blocks (45). Moving tires (47) are provided on the opposing surfaces of the two telescopic boxes (46).

7. A novel orchard obstacle-avoiding lawn mower according to claim 6, characterized in that: The two telescopic boxes (46) are provided with telescopic grooves (461) on their opposite sides. Springs (462) are fixedly installed on the top of the inner walls of the two telescopic grooves (461). Telescopic blocks (463) are fixedly installed at the bottom of the two springs (462). The opposite sides of the two telescopic blocks (463) are movably connected to the opposite back shafts of the two movable tires (47). The two telescopic blocks (463) are slidably connected to the two telescopic grooves (461). Hydraulic shock absorbers (464) are fixedly installed on the top of the two telescopic blocks (463). The hydraulic shock absorbers (464) are located inside the springs (462). The tops of the two hydraulic shock absorbers (464) are fixedly connected to the top of the inner walls of the two telescopic grooves (461).

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