Grass trimmer with function head convenient to replace

Abstract

The invention discloses a grass trimmer with a function head convenient to replace, and particularly relates to the technical field of grass trimmers, the grass trimmer comprises a moving trolley and a support, a first fixing mechanism is fixedly connected to the upper end of the support, a moving mechanism is slidably connected to the upper end of the first fixing mechanism, and a second fixing mechanism is arranged at the front end of the first fixing mechanism; a grass mowing functional head mechanism is arranged on the lower portion of the second fixing mechanism, a ploughing functional head mechanism is arranged on the lower portion of the second fixing mechanism, and a reciprocating mechanism is rotationally connected to the lower portion of the first fixing mechanism. According to the grass trimmer with the function head convenient to replace, through cooperation of a balancing weight, the grass trimmer can flexibly adapt to different terrains, meanwhile, grass of different heights can be cut, meanwhile, a first rotating rod drives a double-face cutter to swing and cut grass, and the first rotating rod can also be matched with two iron brushes to collect the cut grass, so that the grass trimmer is convenient to use. Soil blocks can be leveled while the soil is ploughed through the ploughing cutter set, the situation that manual follow-up treatment is needed due to the fact that the soil blocks are too large is avoided, and the good flatness of the soil is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of lawn mowers, and in particular to a lawn mower with a functional head that is easy to replace. Background Art

[0002] A lawn mower is a device used to cut weeds in lawns, gardens, pastures and other places. A lawn mower with easy-to-replace functional heads is a very practical tool in the fields of gardening and agriculture. Its design allows users to easily switch between different functional heads to adapt to different work needs. After mowing the lawn or wasteland, it may be necessary to plow the land. While mowing, avoid the impact of cut grass on subsequent operations. At the same time, during the land plowing process, try to reduce unevenness such as clods of soil.

[0003] Chinese patent announcement number CN208113341U discloses a lawn mower with an easy-to-replace functional head, which solves the problem of inconvenience in replacing the functional head of the lawn mower in the prior art. The key points of its technical solution are that it includes a support rod, a functional head assembly and a grip assembly. The functional head assembly includes a shell, a drive motor and a functional head. A heat dissipation blade is installed on the top of the drive motor. A limit baffle is fixed above the heat dissipation blade by a fastening bolt to press the heat dissipation blade. A locking structure for abutting and limiting the rotation of the limit baffle is installed on the shell. The limit baffle is locked by the locking structure. Since the limit baffle rotates synchronously with the shaft of the drive motor, the shaft of the drive motor is locked, which facilitates the installation and removal of the functional head.

[0004] However, the above device cannot collect and organize the grass during mowing, or cannot level the soil during tillage. Summary of the invention

[0005] The main purpose of the present invention is to provide a lawn mower with an easy-to-replace functional head, which can effectively solve the problem of being unable to gather and tidy up the grass during mowing, or being unable to level the soil during land plowing.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A grass trimmer with easy replacement of functional heads comprises a mobile vehicle and a bracket, wherein the bracket is fixedly connected to the front side of the upper end of the mobile vehicle, a fixing mechanism 1 is fixedly connected to the upper end of the bracket, a moving mechanism is slidably connected to the upper end of the fixing mechanism 1, a fixing mechanism 2 is arranged at the front end of the fixing mechanism 1, a grass trimming functional head mechanism is arranged at the lower part of the fixing mechanism 2, a tillage functional head mechanism is arranged at the lower part of the fixing mechanism 2, and a reciprocating mechanism is rotatably connected to the lower part of the fixing mechanism.

[0008] Preferably, the fixing mechanism comprises a base fixedly connected to the upper end of the bracket, a guide rail is fixedly connected to the middle of the upper end of the base, a guide rod is fixedly connected to the middle of the front end of the base, a fixing ring is fixedly connected to the middle of the front end of the base, through holes are symmetrically opened in the middle of the upper end of the base, and a plurality of clamping blocks are fixedly connected to the left and right ends of the guide rail.

[0009] Preferably, the moving mechanism includes a counterweight block, a slide groove 1 is provided at the lower end of the counterweight block, the top wall of the inner surface of the slide groove 1 is slidably connected to the upper end of the guide rail, a rectangular groove is provided at the upper end of the counterweight block, oblique grooves are provided at the left and right ends of the counterweight block, a number of limit grooves are provided on the left and right walls of the inner surface of the slide groove 1, a number of telescopic rods are fixedly connected to the middle parts of the inner surfaces of the limit grooves away from the guide rail, and a number of springs are fixedly connected to the inner surfaces of the limit grooves away from the guide rail.

[0010] Preferably, the spring located on the inner surface of the same limiting groove and one end of the telescopic rod close to the guide rail are jointly fixedly connected to the limiting block, and two adjacent clamping blocks are tightly attached to the limiting block.

[0011] Preferably, the second fixing mechanism includes a Z-shaped rod slidably connected to the inner surfaces of the two inclined grooves, the front ends of the horizontal parts of the two Z-shaped rods are commonly fixedly connected to a fixing block, the upper end of the fixing block is fixedly connected to a motor, the output shaft of the motor is fixedly connected to a rotating rod one, the lower end of the rotating rod one is fixedly connected to a fixed roller, the lower end of the fixed roller is fixedly connected to a threaded groove ring, and the outer surfaces of the fixed roller and the threaded groove ring are both rotatably connected to the middle of the fixing block.

[0012] Preferably, the left and right ends of the fixed block are fixedly connected with a second clamping block, the rear end of the fixed block is provided with a second slide groove, the inner surface of the second slide groove is slidably connected to the outer surface of the guide rod, and the outer surface of the rotating rod 1 has four protrusions in a circular array.

[0013] Preferably, the reciprocating mechanism includes a swivel ring rotatably connected to the inner surface of the fixed ring, the lower part of the outer surface of the swivel ring is transmission-connected with a bidirectional screw, the middle part of the lower end of the base is rotatably connected with a bidirectional screw, the middle part of the outer surface of the bidirectional screw and the outer surface of the second rotating shaft are jointly fixedly connected with a bevel gear transmission group, the outer surface of the bidirectional screw is rotatably connected with two moving rings, the lower ends of the two moving rings are both fixedly connected with iron brushes, the two moving rings are slidably connected with guide rollers on the rear sides of one end away from each other, the two guide rollers are jointly fixedly connected with the base at the upper part of one side close to each other, the inner surface of the swivel ring is provided with four card slots three in an annular array, and the inner surfaces of the four card slots three are respectively slidably connected with the outer surfaces of matching protrusions.

[0014] Preferably, the grass trimming function head mechanism includes a threaded rod 1 that can be threadedly connected to the inner surface of the threaded groove ring, a nut 1 is threadedly connected to the middle part of the outer surface of the threaded rod 1, a lower end of the threaded rod is rotatably connected to a fixing plate 1, a lower part of the outer surface of the threaded rod 1 is fixedly connected to a gear 1, a gear 2 is symmetrically meshed with the outer surface of the gear 1, and a gear 3 is meshed with one side of the outer surface of the two gears 2 away from the gear 1, a lower end of the fixing plate is symmetrically rotatably connected to a limiting plate, the front sides of the lower ends of the two limiting plates are fixedly connected to double-sided cutters, and a rotating plate is provided at the lower parts of the two gears 3.

[0015] Preferably, a card slot 1 is symmetrically opened on the rear side of the upper end of the fixed plate 1, and the inner surfaces of the two card slots 1 are respectively tightly fitted with the matching card block 2, and the middle parts of the lower ends of the two gears 3 are fixedly connected with a rotating shaft 1, and the two rotating shafts 1 are both rotatably connected to the fixed plate 1, and the lower parts of the outer surfaces of the two rotating shafts 1 are both fixedly connected to the upper ends of the matching rotating plates, and the front sides of the lower ends of the two rotating plates are fixedly connected with round rollers, and the outer surfaces of the two round rollers are respectively tightly fitted with the inner surfaces of the matching limiting plates.

[0016] Preferably, the tillage functional head mechanism includes two threaded rods that can be threadedly connected to the inner surface of the threaded groove ring, two nuts are threadedly connected to the middle part of the outer surface of the two threaded rods, the lower end of the two threaded rods is rotatably connected to two fixing plates, the lower part of the outer surface of the two threaded rods is transmission connected to two rotating rods, the lower end of the two fixing plates is symmetrically rotationally connected to a tillage knife group, the two tillage knife groups are commonly transmission connected to the lower part of the outer surface of the two rotating rods, and two card grooves are symmetrically opened on the rear side of the upper end of the two fixing plates, and the inner surfaces of the two card grooves can fit tightly against two matching card blocks.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention uses the second fixing mechanism to make the grass cutting function head mechanism and the tillage function head mechanism compatible, thereby realizing the multifunctional conversion from weeding to tillage. Meanwhile, through the cooperation of the mobile mechanism and the first fixing mechanism, the user can conveniently adjust the height of the grass cutting function head mechanism and the tillage function head mechanism, so that the grass cutting function head mechanism and the tillage function head mechanism can be flexibly adapted to different terrains and operation requirements, thus meeting the needs of different stages of lawn or land treatment. Through the cooperation of the reciprocating mechanism, better effects can be achieved in both grass cutting and tillage, thus reducing the repetitive labor of users.

[0019] 2. The present invention freely adjusts the height of the fixed block, the fixed plate and the double-sided cutter through the counterweight block, the guide rail and the clamping block, so that it can flexibly adapt to different terrains and cut grass or weeds of different heights. At the same time, the rotating rod drives the threaded rod to rotate, which can not only drive the double-sided cutter to swing back and forth to cut grass, but also cooperate with two iron brushes to collect the cut grass, thereby further improving the efficiency of grass cutting and avoiding manual secondary sorting.

[0020] 3. The present invention uses a tilling knife group in conjunction with a threaded rod 2 and a motor, etc., to level the soil while plowing the land, thereby avoiding the situation where the soil clods are too large and require subsequent manual processing, so that the land reaches a good flatness, which is convenient for operators to carry out subsequent processing such as paving the lawn. According to actual needs, it is easy to switch between the grass cutting and tilling functions, and at the same time, it can more effectively process the land, such as plowing and leveling, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall structure of another state of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the grass trimming functional head mechanism of the present invention;

[0024] Figure 4 It is a partial structural schematic diagram of the grass trimming functional head mechanism of the present invention from another perspective;

[0025] Figure 5 It is a schematic diagram of the structure of the tillage functional head mechanism of the present invention;

[0026] Figure 6 It is a structural schematic diagram of a fixing mechanism of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the mobile mechanism of the present invention;

[0028] Figure 8 It is a schematic diagram of a partial cross-sectional structure of the moving mechanism of the present invention;

[0029] Fig. 9 It is a structural schematic diagram of the second fixing mechanism of the present invention;

[0030] Fig.10 It is a structural schematic diagram of the fixing mechanism 2 of the present invention from another viewing angle;

[0031] Fig.11 It is a schematic diagram of the reciprocating mechanism structure of the present invention.

[0032] In the figure: 1. mobile vehicle; 11. bracket; 2. fixing mechanism 1; 21. base; 211. through hole; 22. guide rail; 221. block 1; 23. fixing ring; 24. guide rod; 3. mobile mechanism; 31. counterweight; 311. rectangular groove; 312. inclined groove; 313. slideway 1; 314. limit groove; 32. limit block; 33. telescopic rod; 34. spring; 4. fixing mechanism 2; 41. Z-shaped rod; 42. fixing block; 421. block 2; 422. slideway 2; 43. rotating rod 1; 431. convex block; 44. motor; 45. fixed roller; 46. threaded groove ring; 5. grass trimming function head mechanism ;51. Fixed plate one;511. Slot one;52. Threaded rod one;53. Nut one;54. Gear one;541. Gear two;55. Gear three;551. Rotating shaft one;56. Double-sided cutter;57. Rotating plate;571. Round roller;58. Limiting plate;6. Cultivating land function head mechanism;61. Fixed plate two;611. Slot two;62. Threaded rod two;63. Nut two;64. Rotating rod two;65. Soil turning knife set;7. Reciprocating mechanism;71. Rotating ring;711. Slot three;72. Rotating shaft two;73. Bidirectional screw rod;74. Moving ring;75. Iron brush;76. Guide roller;77. Bevel gear transmission group. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] Embodiment 1, as Figure 1 and Figure 2 As shown, a grass trimmer with easy replacement of functional heads comprises a mobile vehicle 1 and a bracket 11, the bracket 11 is fixedly connected to the front side of the upper end of the mobile vehicle 1, the upper end of the bracket 11 is fixedly connected to a fixing mechanism 2, the upper end of the fixing mechanism 2 is slidably connected to a moving mechanism 3, a fixing mechanism 2 4 is arranged at the front end of the fixing mechanism 2, a grass trimming functional head mechanism 5 is arranged at the lower part of the fixing mechanism 2 4, a tillage functional head mechanism 6 is arranged at the lower part of the fixing mechanism 2 4, and a reciprocating mechanism 7 is rotatably connected to the lower part of the fixing mechanism 2.

[0035] When it is necessary to weed a park or an area covered with weeds, the grass trimming function head mechanism 5 is fixed with the fixing mechanism 2 4, and then the overall height of the fixing mechanism 2 4 and the grass trimming function head mechanism 5 is adjusted through the moving mechanism 3 in cooperation with the fixing mechanism 1 2, and then the weeds are cut through the fixing mechanism 2 4 in cooperation with the grass trimming function head mechanism 5, and at the same time, the mobile vehicle 1 is stimulated to make the mobile vehicle 1 move forward slowly and at a uniform speed as a whole. During the moving forward process, the mobile vehicle 1 drives the fixing mechanism 1 2 and the like through the bracket 11 to make the grass trimming function head mechanism 5 move forward to cut the weeds. In the process of cutting the weeds forward, the reciprocating mechanism 7 cooperates with the fixing mechanism 2 4 to gather the cut weeds on both sides of the mobile vehicle 1, so as to facilitate the subsequent treatment of the weeds.

[0036] Similarly, after mowing the weeds, if the land needs to be plowed, the cooperation between the fixing mechanism 2 4 and the mowing function head mechanism 5 is disassembled and released, so that the plowing function head mechanism 6 and the fixing mechanism 2 4 are cooperated and fixed, and the height of the plowing function head mechanism 6 is adjusted by moving the position of the moving mechanism 3, so that the land can be plowed. While plowing, the reciprocating mechanism 7 cooperates to level the plowed land, which is convenient for subsequent processing such as laying lawns;

[0037] Similarly, during the operation of the above device, the moving mechanism 3 cooperates to prevent the center of gravity of the device from shifting or becoming unstable.

[0038] During the operation of this embodiment, the grass-cutting function head mechanism 5 and the tillage function head mechanism 6 are compatible through the fixed mechanism 2 4, thereby realizing the multifunctional conversion from weeding to tilling the land. Meanwhile, through the cooperation of the mobile mechanism 3 and the fixed mechanism 1 2, the user can conveniently adjust the height of the grass-cutting function head mechanism 5 and the tillage function head mechanism 6, so that they can flexibly adapt to different terrains and operation requirements and meet the needs of different stages of lawn or land treatment. Through the cooperation of the reciprocating mechanism 7, better effects can be achieved in both grass-cutting and tilling the land, thereby reducing the repetitive labor of users.

[0039] Embodiment 2: Based on Embodiment 1, this embodiment is to achieve the effect of gathering and tidying up the cut grass while mowing the grass.

[0040] See also Figure 6 The fixing mechanism 2 includes a base 21 fixedly connected to the upper end of the bracket 11, a guide rail 22 is fixedly connected to the middle of the upper end of the base 21, a guide rod 24 is fixedly connected to the middle of the front end of the base 21, a fixing ring 23 is fixedly connected to the middle of the front end of the base 21, through holes 211 are symmetrically opened in the middle of the upper end of the base 21, and a plurality of blocks 221 are fixedly connected to the left and right ends of the guide rail 22.

[0041] Specifically, when cutting grass, the guide rod 24 is used to limit the fixing mechanism 24 to prevent the fixing mechanism 24 from driving the grass cutting function head mechanism 5 or the tillage function head mechanism 6 to move up and down and causing deviation. Secondly, the moving mechanism 3 is coordinated with the guide rail 22 and the block 1 221 to arbitrarily adjust the position of the moving mechanism 3 and then adjust the height of the fixing mechanism 24, so that the whole is suitable for cutting grass of different heights.

[0042] See also Figure 7 and Figure 8The moving mechanism 3 includes a counterweight block 31, a slide groove 313 is provided at the lower end of the counterweight block 31, and the top wall of the inner surface of the slide groove 313 is slidably connected to the upper end of the guide rail 22. A rectangular groove 311 is provided at the upper end of the counterweight block 31, and oblique grooves 312 are provided at the left and right ends of the counterweight block 31. The left and right walls of the inner surface of the slide groove 313 are provided with a plurality of limiting grooves 314. The middle part of the inner surface of the plurality of limiting grooves 314 away from the guide rail 22 is fixedly connected with a telescopic rod 33, and the inner surface of the plurality of limiting grooves 314 away from the guide rail 22 is fixedly connected with a spring 34. The spring 34 and the end of the telescopic rod 33 located on the same inner surface of the limiting groove 314 close to the guide rail 22 are jointly fixedly connected to the limiting block 32, and the limit block 32 is tightly attached to the two adjacent card blocks 221.

[0043] Furthermore, when it is necessary to move the counterweight block 31, the rectangular groove 311 is used to pull the rear side of the upper end of the counterweight block 31, and then the counterweight block 31 drives the slide groove 313 to move backward along the upper end of the guide rail 22. During the movement of the counterweight block 31, the counterweight block 31 will drive the telescopic rod 33, the spring 34 and the limit block 32 to move in the same direction. At the same time, due to the limitation of the block 221 that is closely attached to the rear side of the limit block 32, during the process of the counterweight block 31 driving the limit block 32 to move backward, a plurality of limit blocks 32 will slide simultaneously along the block 221 that is closely attached to the rear side toward the side away from the guide rail 22. At this time, the limit block 32 will squeeze The telescopic rod 33 and the spring 34 cause the telescopic rod 33 and the spring 34 to be compressed along the inner surface of the limit groove 314. When the limit block 32 slides to the farthest point along the outer arc surface of the clamping block 221, the counterweight block 31 moves backward a short distance, and the counterweight block 31 continues to drive the limit block 32 to move backward. Then the limit block 32 is no longer squeezed by the clamping block 221. At this time, the compressed telescopic rod 33 and the spring 34 return to their original state and push the limit block 32 toward the side close to the guide rail 22, so that the limit block 32 is again tightly attached to the two clamping blocks 221. Repeat the above operation until the counterweight block 31 is moved to a suitable position.

[0044] See also Fig. 9 and Fig.10 The fixing mechanism 2 4 includes a Z-shaped rod 41 slidably connected to the inner surfaces of the two inclined grooves 312, and the front ends of the horizontal parts of the two Z-shaped rods 41 are commonly fixedly connected to a fixing block 42, the upper end of the fixing block 42 is fixedly connected to a motor 44, the output shaft of the motor 44 is fixedly connected to a rotating rod 1 43, the lower end of the rotating rod 1 43 is fixedly connected to a fixing roller 45, the lower end of the fixing roller 45 is fixedly connected to a threaded groove ring 46, and the outer surfaces of the fixing roller 45 and the threaded groove ring 46 are both rotatably connected to the middle of the fixing block 42.

[0045] Specifically, when the counterweight block 31 is pulled backward, the two Z-shaped rods 41 on both sides slide along the inner surface of the inclined groove 312, and then cooperate with the two Z-shaped rods 41 through the two through holes 211 to make the Z-shaped rods 41 slide downward, and then the two Z-shaped rods 41 simultaneously drive the fixed block 42 to move in the same direction. When it is necessary to cut the grass, the motor 44 is activated, and its output end drives the rotating rod 43, the fixed roller 45 and the threaded groove ring 46 to rotate simultaneously.

[0046] See also Fig.10 The left and right ends of the fixed block 42 are fixedly connected with a second clamping block 421, and a second slide groove 422 is provided at the rear end of the fixed block 42. The inner surface of the second slide groove 422 is slidably connected with the outer surface of the guide rod 24, and the outer surface of the rotating rod 43 has four protrusions 431 in a circular array.

[0047] Furthermore, in the process of rotating rod 1 43 driving fixed roller 45 and thread groove ring 46 to rotate, fixed roller 45 cooperates with fixed block 42, so that fixed block 42 is driven by two Z-shaped rods 41 to move downward, and fixed roller 45, thread groove ring 46, rotating rod 1 43, motor 44, etc. are simultaneously driven by fixed block 42 to slide up and down along the outer surface of guide rod 24 through slide groove 2 422 in cooperation with guide rod 24.

[0048] See also Figure 3 and Figure 4 The grass trimming function head mechanism 5 includes a threaded rod 52 that can be threadedly connected to the inner surface of the threaded groove ring 46, a nut 53 is threadedly connected to the middle part of the outer surface of the threaded rod 52, a fixing plate 51 is rotatably connected to the lower end of the threaded rod 52, a gear 54 is fixedly connected to the lower part of the outer surface of the threaded rod 52, a gear 2 541 is symmetrically meshed on the outer surface of the gear 1 54, and a gear 3 55 is meshed on the side of the outer surfaces of the two gears 2 541 away from the gear 1 54, the lower end of the fixing plate 51 is symmetrically rotatably connected to the limiting plate 58, the front sides of the lower ends of the two limiting plates 58 are fixedly connected to the double-sided cutter 56, and the lower parts of the two gears 3 55 are provided with a rotating plate 57.

[0049] Furthermore, the nut 53 is first threadedly connected to the threaded rod 52, wherein the nut 53 is threadedly connected to the middle part of the outer surface of the threaded rod 52, and then the upper part of the outer surface of the threaded rod 52 cooperates with the inner surface of the threaded groove ring 46 to be threadedly connected and fixed. At the same time, since the thread groove on the inner surface of the nut 53 is in opposite directions to the thread groove on the inner surface of the threaded groove ring 46, the threaded rod 52 and the nut 53 cooperate with the threaded groove ring 46 to fix the integral fixed plate 51, the gear 54, the double-sided cutter 56, etc.

[0050] Then the motor 44 is excited, and its output end cooperates with the fixed roller 45 and the thread groove ring 46 through the rotating rod 43 to drive the threaded rod 52 to rotate. During the process of the threaded rod 52 being driven to rotate, the opposite thread grooves of the nut 53 and the thread groove ring 46 prevent the threaded rod 52 from falling off the thread groove ring 46.

[0051] Furthermore, during the rotation of the threaded rod 1 52, the gear 1 54 cooperates with the two gear 2 541 and the two gear 3 55, so that during the rotation of the threaded rod 1 52, the two gear 3 55 rotates continuously, and then the two double-sided cutters 56 are driven to swing in the same direction through the cooperation of the rotating plate 57 and the limiting plate 58, and the grass is cut while the two double-sided cutters 56 are driven to swing.

[0052] See also Figure 4 A card slot 511 is symmetrically provided on the rear side of the upper end of the fixed plate 51, and the inner surfaces of the two card slots 511 are respectively tightly attached to the adapted card block 2 421, and a rotating shaft 551 is fixedly connected to the middle part of the lower end of the two gears 3 55, and the two rotating shafts 551 are both rotatably connected to the fixed plate 51, and the lower parts of the outer surfaces of the two rotating shafts 551 are fixedly connected to the upper end of the adapted rotating plate 57, and the front sides of the lower ends of the two rotating plates 57 are fixedly connected to round rollers 571, and the outer surfaces of the two round rollers 571 are respectively tightly attached to the inner surfaces of the adapted limiting plates 58.

[0053] Furthermore, after the threaded rod 52 is installed and matched with the threaded groove ring 46, the clamping block 2 421 is matched with the clamping groove 1 511. When the motor 44 drives the threaded rod 52 to rotate, the fixed plate 51 is prevented from being driven to rotate. At the same time, the fixed block 42 is driven by the two Z-shaped rods 41 to move downward. During the process, the two clamping blocks 2 421 cooperate with the threaded groove ring 46 and the threaded rod 52 to drive the fixed plate 51 and the threaded rod 52 to move downward at the same time. Similarly, it will not affect the rotation of the threaded rod 52 driven by the motor 44 through cooperation.

[0054] Furthermore, when the threaded rod 52 rotates and drives the two gears 3 55 to rotate through meshing, it will drive the rotating shaft 551 to rotate, and then the two rotating shafts 551 will cause the rotating plate 57 to continuously rotate around the central axis of the rotating shaft 551. During the rotation of the rotating plate 57, the round roller 571 will be driven to rotate in the same direction. At the same time, through the cooperation of the limiting plate 58, the round roller 571 is driven to rotate, causing the limiting plate 58 to swing around the upper rear side of the limiting plate 58. During the swinging process, the limiting plate 58 will drive the double-sided cutter 56 to swing in the same direction, and then the two double-sided cutters 56 cooperate to cut grass and the like.

[0055] See also Fig.11The reciprocating mechanism 7 includes a swivel ring 71 rotatably connected to the inner surface of the fixed ring 23, a bidirectional screw rod 73 is transmission-connected to the lower part of the outer surface of the swivel ring 71, a bidirectional screw rod 73 is rotatably connected to the middle part of the lower end of the base 21, a bevel gear transmission group 77 is fixedly connected to the middle part of the outer surface of the bidirectional screw rod 73 and the outer surface of the rotating shaft 2 72, and the outer surface of the bidirectional screw rod 73 is rotatably connected to two moving rings 74, and the lower ends of the two moving rings 74 are fixedly connected to iron brushes 75, and the two moving rings 74 are slidably connected to guide rollers 76 at the rear sides of one end away from each other, and the two guide rollers 76 are fixedly connected to the base 21 at the upper part of one side close to each other, and the inner surface of the swivel ring 71 is provided with four card slots 711 in an annular array, and the inner surfaces of the four card slots 711 are respectively slidably connected to the outer surfaces of the matching protrusions 431.

[0056] Furthermore, when the mobile vehicle 1 continuously moves forward and the two double-sided cutters 56 continuously cut the weeds or bushes, the rotating rod 43 is driven by the output end of the motor 44 to continuously rotate, and then the four protrusions 431 cooperate with the four card slots 711 to drive the rotating ring 71 to rotate during the rotation of the rotating rod 43. At the same time, the rotating rod 43 is driven by the fixed block 42 to slide downward without affecting the rotation of the rotating ring 71 driven by the rotating rod 43.

[0057] The above-mentioned intermediate ring 71 and the outer surface of the second rotating shaft 72 are connected by a transmission belt design commonly used in the prior art. At the same time, the above-mentioned bevel gear transmission group 77 is a conventional design in the prior art. When the second rotating shaft 72 is driven to rotate, it will drive the bidirectional screw rod 73 to rotate continuously.

[0058] When the bidirectional screw rod 73 is driven to rotate, the two moving rings 74 cooperate with the guide rollers 76 on the same side, and the moving rings 74 continuously move back and forth along the outer surfaces of the bidirectional screw rod 73 in two directions away from and approaching each other. During the movement of the two moving rings 74, the moving rings 74 cooperate with the iron brushes 75, so that the two iron brushes 75 can continuously sweep and gather the cut grass along the ground, making it convenient for users to collect and process the cut grass later, so as to avoid affecting the subsequent viewing and use of the lawn or the ground.

[0059] Therefore, the present invention freely adjusts the height of the fixed block 42, the fixed plate 51 and the double-sided cutter 56 through the counterweight block 31 in cooperation with the guide rail 22 and the clamping block 221, so that the fixed block 42, the fixed plate 51 and the double-sided cutter 56 can be flexibly adapted to different terrains and can cut grass or weeds of different heights. At the same time, the rotating rod 43 drives the threaded rod 52 to rotate, which can not only drive the double-sided cutter 56 to swing back and forth to cut the grass, but also cooperate with the two iron brushes 75 to gather the cut grass, thereby further improving the efficiency of the grass cutting process and avoiding the situation of manual secondary sorting.

[0060] Embodiment 3: This embodiment is based on Embodiment 1 and Embodiment 2, and is for achieving the effect of leveling the soil blocks while plowing the land.

[0061] See also Figure 5 The tillage function head mechanism 6 includes a threaded rod 62 that can be threadedly connected to the inner surface of the threaded groove ring 46, a nut 63 is threadedly connected to the middle part of the outer surface of the threaded rod 62, the lower end of the threaded rod 62 is rotatably connected to a fixed plate 61, the lower part of the outer surface of the threaded rod 62 is transmission-connected to a rotating rod 64, the lower end of the fixed plate 61 is symmetrically rotatably connected to a tillage knife group 65, the two tillage knife groups 65 are commonly transmission-connected to the lower part of the outer surface of the rotating rod 64, and a card slot 611 is symmetrically opened on the rear side of the upper end of the fixed plate 61, and the inner surfaces of the two card slots 611 can be tightly attached to the matching card block 421.

[0062] Specifically, after the grass on the lawn or the weeds on the wasteland are cut by the double-sided cutter 56, if the land needs to be plowed, first release the limit of the nut 53 on the threaded rod 52 and the threaded groove ring 46, then release the cooperation between the clamping groove 511 and the clamping block 421, and then take out the entire grass trimming function head mechanism 5;

[0063] Then, firstly, the nut 2 63 is threadedly connected with the threaded rod 2 62, and then the threaded rod 2 62 drives the fixing plate 2 61 and the two ground turning knife groups 65 to be threadedly connected with the inner surface of the thread groove ring 46. At the same time, the cooperation between the nut 2 63, the threaded rod 2 62 and the thread groove ring 46 is the same as the cooperation between the threaded rod 1 52, the nut 1 53 and the thread groove ring 46, and this scheme will not be elaborated in detail;

[0064] Furthermore, the second clamping block 421 cooperates with the second clamping slot 611 to prevent the second fixing plate 61 from being driven to rotate when the second threaded rod 62 is driven to rotate by the motor 44;

[0065] Similarly, the second middle threaded rod 62 and the outer surface of the second rotating rod 64 are connected by gear meshing in the prior art, and the second rotating rod 64 and the two ground turning knife groups 65 are connected by bevel gear transmission groups in the prior art.

[0066] Furthermore, when the fixed block 42 is driven to move downward, the fixed plate 2 61, the threaded rod 2 62 and the two tilling knife groups 65 are driven downward by the cooperation of the clamping block 2 421 etc., until the tilling knife groups 65 drop to a suitable position, and then the motor 44 is stimulated, and then the output end of the motor 44 drives the threaded rod 2 62 to rotate, and the two tilling knife groups 65 are continuously rotated by cooperating with the rotating rod 2 64, so that the land can be plowed.

[0067] Similarly, when the mobile vehicle 1 cooperates with the bracket 11 to push the two tilling knife groups 65 forward to continuously till the land, the two iron brushes 75 are still driven to reciprocate through the cooperation of the two-way screw rod 73 and the rotating shaft 2 72. In the process of the two iron brushes 75 being driven to reciprocate, the two iron brushes 75 can brush the tilled land to make it flat, avoiding the situation where the soil clods are too large and need to be manually handled later. Similarly, after leveling, it is convenient for the operator to perform other treatments on the land such as laying lawns.

[0068] This solution uses the tilling knife group 65 in conjunction with the threaded rod 62 and the motor 44, etc., to level the soil while plowing the land, avoiding the situation where the soil clods are too large and need to be manually processed later, so that the land reaches a good flatness, which is convenient for operators to carry out subsequent processing such as paving the lawn. According to actual needs, it is easy to switch between the grass cutting and tilling functions, and at the same time, it can more effectively process the land, such as plowing and leveling, thereby improving work efficiency.

[0069] It should be particularly noted that the specific installation method of the motor 44, the circuit connection method and the control method used in the present invention are all conventional designs and will not be elaborated in detail in the present invention.

[0070] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A grass trimmer with a convenient replacement function head, comprising a mobile vehicle (1) and a bracket (11), characterized in that: The support (11) is fixedly connected to the front side of the upper end of the mobile vehicle (1); the upper end of the support (11) is fixedly connected to a fixing mechanism (2); the upper end of the fixing mechanism (2) is slidably connected to a moving mechanism (3); the front end of the fixing mechanism (2) is provided with a fixing mechanism (4); the lower part of the fixing mechanism (4) is provided with a grass trimming function head mechanism (5); the lower part of the fixing mechanism (4) is provided with a tilling function head mechanism (6); and the lower part of the fixing mechanism (2) is rotatably connected to a reciprocating mechanism (7).

2. A grass trimmer with easy-to-replace functional head according to claim 1, characterized in that: The fixing mechanism (2) comprises a base (21) fixedly connected to the upper end of the bracket (11); a guide rail (22) is fixedly connected to the middle of the upper end of the base (21); a guide rod (24) is fixedly connected to the middle of the front end of the base (21); a fixing ring (23) is fixedly connected to the middle of the front end of the base (21); through holes (211) are symmetrically provided in the middle of the upper end of the base (21); and a plurality of clamping blocks (221) are fixedly connected to the left and right ends of the guide rail (22).

3. The grass trimmer with easy-to-replace functional head according to claim 2, characterized in that: The moving mechanism (3) comprises a counterweight block (31), a slide groove (313) is provided at the lower end of the counterweight block (31), the top wall of the inner surface of the slide groove (313) is slidably connected to the upper end of the guide rail (22), a rectangular groove (311) is provided at the upper end of the counterweight block (31), the left and right ends of the counterweight block (31) are provided with inclined grooves (312), a plurality of limiting grooves (314) are provided on the left and right walls of the inner surface of the slide groove (313), a plurality of the limiting grooves (314) are fixedly connected to the middle part of the inner surface of the plurality of limiting grooves (314) away from the guide rail (22), and a plurality of the limiting grooves (314) are fixedly connected to the inner surface of the plurality of limiting grooves (314) away from the guide rail (22).

4. The grass trimmer with easy-to-replace functional head according to claim 3, characterized in that: The spring (34) and one end of the telescopic rod (33) located on the inner surface of the same limiting groove (314) close to the guide rail (22) are fixedly connected to the limiting block (32), and two adjacent clamping blocks (221) are tightly attached to the limiting block (32).

5. The grass trimmer with easy-to-replace functional head according to claim 3, characterized in that: The second fixing mechanism (4) comprises a Z-shaped rod (41) slidably connected to the inner surfaces of the two inclined grooves (312); the front ends of the horizontal parts of the two Z-shaped rods (41) are commonly fixedly connected to a fixing block (42); the upper end of the fixing block (42) is fixedly connected to a motor (44); the output shaft of the motor (44) is fixedly connected to a rotating rod (43); the lower end of the rotating rod (43) is fixedly connected to a fixing roller (45); the lower end of the fixing roller (45) is fixedly connected to a threaded groove ring (46); the outer surfaces of the fixing roller (45) and the threaded groove ring (46) are both rotatably connected to the middle of the fixing block (42).

6. The grass trimmer with easy-to-replace functional head according to claim 5, characterized in that: The left and right ends of the fixed block (42) are fixedly connected to a second clamping block (421); a second slide groove (422) is provided at the rear end of the fixed block (42); the inner surface of the second slide groove (422) is slidably connected to the outer surface of the guide rod (24); and the outer surface of the first rotating rod (43) has four protrusions (431) in a circular array.

7. The grass trimmer with easy-to-replace functional head according to claim 6, characterized in that: The reciprocating mechanism (7) comprises a rotating ring (71) rotatably connected to the inner surface of the fixed ring (23); the lower part of the outer surface of the rotating ring (71) is transmission-connected with a bidirectional screw rod (73); the middle part of the lower end of the base (21) is rotatably connected with the bidirectional screw rod (73); the middle part of the outer surface of the bidirectional screw rod (73) and the outer surface of the second rotating shaft (72) are fixedly connected with a bevel gear transmission group (77); the outer surface of the bidirectional screw rod (73) is rotatably connected with two moving rings (74); the lower ends of the two moving rings (74) are fixedly connected with iron brushes (75); the rear sides of the two moving rings (74) away from each other are slidably connected with guide rollers (76); the upper parts of the two guide rollers (76) close to each other are fixedly connected with the base (21); the inner surface of the rotating ring (71) is provided with four card slots (711) in an annular array; the inner surfaces of the four card slots (711) are respectively slidably connected with the outer surfaces of the matching protrusions (431).

8. The grass trimmer with easy-to-replace functional head according to claim 6, characterized in that: The mowing function head mechanism (5) comprises a threaded rod (52) capable of being threadedly connected to the inner surface of the threaded groove ring (46); a nut (53) is threadedly connected to the middle part of the outer surface of the threaded rod (52); a fixing plate (51) is rotatably connected to the lower end of the threaded rod (52); a gear (54) is fixedly connected to the lower part of the outer surface of the threaded rod (52); a gear (54) is symmetrically meshed with a gear (541) on the outer surface of the gear (54); a gear (55) is meshed with a side of the outer surface of the two gears (541) away from the gear (54); a limit plate (58) is symmetrically rotatably connected to the lower end of the fixing plate (51); a double-sided cutter (56) is fixedly connected to the front side of the lower end of the two limit plates (58); and a rotating plate (57) is provided at the lower part of the two gears (55).

9. The grass trimmer with easy-to-replace functional head according to claim 8, characterized in that: A clamping groove (511) is symmetrically provided on the rear side of the upper end of the fixed plate (51), and the inner surfaces of the two clamping grooves (511) are respectively in close contact with the matching clamping block (421). A rotating shaft (551) is fixedly connected to the middle of the lower end of the two gears (55), and the two rotating shafts (551) are both rotatably connected to the fixed plate (51). The lower parts of the outer surfaces of the two rotating shafts (551) are both fixedly connected to the upper end of the matching rotating plate (57). The front sides of the lower ends of the two rotating plates (57) are both fixedly connected to round rollers (571), and the outer surfaces of the two round rollers (571) are respectively in close contact with the inner surfaces of the matching limiting plates (58).

10. The grass trimmer with easy-to-replace functional head according to claim 6, characterized in that: The tillage function head mechanism (6) comprises a threaded rod (62) capable of being threadedly connected to the inner surface of the threaded groove ring (46); a nut (63) is threadedly connected to the middle of the outer surface of the threaded rod (62); a fixing plate (61) is rotatably connected to the lower end of the threaded rod (62); a rotating rod (64) is transmission-connected to the lower part of the outer surface of the threaded rod (62); a tillage knife group (65) is symmetrically rotationally connected to the lower end of the fixing plate (61); the two tillage knife groups (65) are transmission-connected to the lower part of the outer surface of the rotating rod (64); a clamping groove (611) is symmetrically opened on the rear side of the upper end of the fixing plate (61); the inner surfaces of the two clamping grooves (611) can be tightly attached to the matching clamping block (421).

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