Height-adjustable mower cutter head structure

Abstract

The utility model relates to a height-adjustable mowing machine cutterhead structure which comprises an installation frame and a fixing frame located above the installation frame, a cutterhead mechanism is installed on the installation frame, lifting mechanisms for driving the installation frame to ascend and descend are installed on the two sides of the fixing frame respectively, the cutterhead mechanism comprises a fixing column, and the fixing column is arranged on the installation frame. The device comprises a fixing column, a mounting box mounted at the bottom of the fixing column, a mounting disc mounted at the bottom of the mounting box, an annular groove formed in the outer side of the mounting disc, and a plurality of blades which are mounted in the annular groove and are of a crescent structure. When the mowing machine is not needed, the unfolding degree of the blade can be reduced, so that the blade is stored in the range covered by the mounting frame, and the use safety of the mowing machine is improved.

Description

Technical Field

[0001] This utility model belongs to the field of graphite processing technology, specifically relating to a height-adjustable lawnmower blade structure. Background Technology

[0002] A lawnmower, also known as a lawn mower, lawn trimmer, or lawn trimmer, is a mechanical tool used to trim lawns, vegetation, etc. It consists of a blade disc, engine, wheels, walking mechanism, blades, handle, and control unit.

[0003] In existing lawnmowers, the blades are mounted on a mounting frame, with the engine on the blades and the blades mounted on the engine's output shaft. When the engine rotates, it drives the blades to rotate, which in turn cuts the grass. However, the blades on existing lawnmowers are mostly fixed, making it impossible to adjust their width according to specific usage needs. Furthermore, when not in use, the blades extend outwards, posing a safety hazard as they can easily cut people. Utility Model Content

[0004] The purpose of this utility model is to provide a simple and reasonably designed height-adjustable lawnmower blade structure in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A height-adjustable lawnmower blade structure includes a mounting frame and a fixed frame located above the mounting frame. The mounting frame is equipped with a blade mechanism, and both sides of the fixed frame are equipped with lifting mechanisms for driving the mounting frame to rise and fall. The blade mechanism includes a fixed column, a mounting box installed at the bottom of the fixed column, a mounting plate installed at the bottom of the mounting box, an annular groove formed on the outer side of the mounting plate, and multiple blades installed in the annular groove in a crescent shape. The mounting box is equipped with an adjustment mechanism for adjusting the spread of the multiple blades.

[0007] As a further optimization of this utility model, the top of the mounting frame is provided with a mounting groove, the fixing column is rotatably connected inside the mounting groove, and a protective cover is installed on the top of the mounting frame to cover the cutter head mechanism.

[0008] As a further optimization of this utility model, a driven wheel is installed on the outside of the fixed column, a rotary motor is installed on the top of the mounting frame, and a driving wheel that meshes with the driven wheel is installed at the output end of the rotary motor.

[0009] As a further optimization of this utility model, the adjustment mechanism includes a rotating disk rotatably connected inside the mounting box, a first gear installed outside the rotating disk, a rotating rod rotatably connected in an annular groove, and a second gear installed outside the rotating rod and meshing with the first gear. The rotating rod and the blade are connected by a fixing mechanism.

[0010] As a further optimization of this utility model, the fixing mechanism includes a fixing plate, a square rod rotatably connected to the top of the fixing plate, a square groove opened at the bottom of the rotating rod, and a square hole opened in the blade. The square groove and the square hole are used in conjunction with the square rod. The top end of the square rod passes through the mounting plate and extends into the square groove through the square hole. The fixing plate is detachably fixed to the bottom of the mounting plate.

[0011] As a further optimization of this utility model, a rotating rod extending to the top of the fixed column is installed on the top of the rotating disk, a rotating block is installed on the outside of the rotating rod, and a plurality of fixing holes arranged in a ring structure around the rotating rod are opened on the top of the fixed column, and bolts that cooperate with the fixing holes are screwed onto the rotating block.

[0012] As a further optimization of this utility model, the lifting mechanism includes two support frames, two adjusting plates installed on one side of the two support frames and slidably connected to the side of the fixed frame and having a sickle-shaped structure, a connecting plate rotatably connected between the two support frames, and an electric telescopic rod installed on one side of the fixed frame and fixedly connected to one side of one of the support frames. The adjusting plate has a first mounting hole and a second mounting hole. The first mounting hole is rotatably connected to one side of the mounting frame, and the second mounting hole is rotatably connected to one side of the fixed frame.

[0013] The beneficial effects of this utility model are as follows: During use, the spread of multiple blades can be adjusted according to specific usage needs, thereby expanding or reducing the cutting width of the blades. Moreover, when the lawnmower is not needed, the spread of the blades can be reduced, thereby storing the blades within the area covered by the mounting frame, which improves the safety of using the lawnmower. Attached Figure Description

[0014] Figure 1 This is a first three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 This is a second three-dimensional structural schematic diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the third three-dimensional structure of this utility model;

[0017] Figure 4 This is a first sectional view of the cutter head mechanism of this utility model;

[0018] Figure 5 This is a utility model Figure 4 Enlarged view of point A in the middle;

[0019] Figure 6 This is a utility model Figure 4 Enlarged view at point B in the middle;

[0020] Figure 7 This is a second sectional view of the cutter head mechanism of this utility model;

[0021] Figure 8 This is a utility model Figure 7 Enlarged view at point C;

[0022] In the diagram: 1. Mounting bracket; 11. Mounting slot; 12. Protective cover; 2. Fixing bracket; 3. Cutter head mechanism; 31. Fixing column; 32. Mounting box; 33. Mounting plate; 34. Annular groove; 35. Blade; 4. Lifting mechanism; 41. Adjusting plate; 42. Electric telescopic rod; 43. Connecting plate; 44. First mounting hole; 45. Second mounting hole; 46. Support frame; 5. Driven wheel; 51. Driving wheel; 6. Rotating disk; 61. First gear; 62. Rotating rod; 63. Second gear; 64. Rotating rod; 65. Rotating block; 66. Fixing hole; 67. Bolt; 7. Fixing plate; 71. Square rod; 72. Square slot; 73. Square hole. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0024] like Figures 1-8As shown, a height-adjustable lawnmower blade structure includes a mounting frame 1 and a fixed frame 2 located above the mounting frame 1. A blade mechanism 3 is mounted on the mounting frame 1. Lifting mechanisms 4 for driving the mounting frame 1 to rise and fall are mounted on both sides of the fixed frame 2. The blade mechanism 3 includes a fixed column 31, a mounting box 32 mounted at the bottom of the fixed column 31, a mounting plate 33 mounted at the bottom of the mounting box 32, an annular groove 34 formed on the outer side of the mounting plate 33, and multiple blades 35 in a crescent shape mounted within the annular groove 34. An adjustment mechanism for adjusting the spread of the multiple blades 35 is installed inside the mounting box 32. A mounting groove 11 is formed at the top of the mounting frame 1, and the fixed column 31 is rotatably connected to the inside of the mounting groove 11. A protective cover 12 covers the blade mechanism 3. The adjustment mechanism includes a rotating disk 6 rotatably connected inside the mounting box 32, a first gear 61 installed outside the rotating disk 6, a rotating rod 62 rotatably connected in the annular groove 34, and a second gear 63 installed outside the rotating rod 62 and meshing with the first gear 61. The rotating rod 62 is connected to the blade 35 by a fixing mechanism. A rotating rod 64 extending to the top of the fixing column 31 is installed on the top of the rotating disk 6. A rotating block 65 is installed outside the rotating rod 64. The top of the fixing column 31 has a plurality of fixing holes 66 arranged around the rotating rod 64 in an annular structure. Bolts 67 that cooperate with the fixing holes 66 are screwed onto the rotating block 65. The fixing frame 2 is installed on the main body of the cutting machine.

[0025] When it is necessary to adjust the spread of the blade 35 during use, the rotating block 65 can be rotated. The rotating block 65 will drive the rotating rod 64 to rotate. Under the drive of the rotating rod 64, the first gear 61 will rotate, which in turn will drive multiple second gears 62 to rotate. This will cause the rotating rod 62 to drive the blade 35 to rotate, thereby adjusting the spread of the blade 35 and thus adjusting the cutting range of the blade 53. At the same time, when the lawnmower is not in use, the spread of the blade 35 can be reduced, so that the blade 35 can be stored within the area covered by the mounting frame, improving the safety of lawnmower use.

[0026] The lifting mechanism 4 includes two support frames 46, two adjusting plates 41 mounted on one side of the two support frames 46 and slidably connected to the side of the fixed frame 2 and having a sickle-shaped structure, a connecting plate 43 rotatably connected between the two support frames 46, and an electric telescopic rod 42 mounted on one side of the fixed frame 2 and fixedly connected to one side of one of the support frames 46. The adjusting plates 41 are provided with a first mounting hole 44 and a second mounting hole 45. The first mounting hole 44 is rotatably connected to one side of the mounting frame 1, and the second mounting hole 45 is rotatably connected to one side of the fixed frame 2.

[0027] When the height of the mounting frame 1 needs to be adjusted, the electric telescopic rod 42 will push one of the support frames 46 to move. At this time, under the action of the connecting plate 43, the two support frames 46 will cause the two adjusting plates 41 to move synchronously, thereby causing the adjusting plates 41 to rotate around the second mounting hole 45, and thus the height of the mounting frame 1 can be adjusted. This allows for adjustment of the height of the blade mechanism, and in turn, adjustment of the cutting depth, making it more convenient for people to use.

[0028] A driven wheel 5 is mounted on the outside of the fixed column 31, and a rotary motor is mounted on the top of the mounting bracket 1. A driving wheel 51 that meshes with the driven wheel 5 is mounted on the output end of the rotary motor.

[0029] When it is time to mow the grass, the rotary motor will drive the drive wheel 51 to rotate. Under the meshing of the drive wheel 51 and the driven wheel 5, the fixed column 31 will rotate, which will drive the entire cutter head mechanism to rotate, thereby performing the grass mowing work.

[0030] The fixing mechanism includes a fixing plate 7, a square rod 71 rotatably connected to the top of the fixing plate 7, a square groove 72 opened at the bottom of the rotating rod 62, and a square hole 73 opened in the blade 35. The square groove 72 and the square hole 73 are used in conjunction with the square rod 71. The top end of the square rod 71 passes through the mounting plate 33 and extends into the square groove 72 through the square hole 73. The fixing plate 7 is detachably fixed to the bottom of the mounting plate 33. The fixing plate 7 is fixed to the bottom of the mounting plate 33 by fixing bolts. The mounting plate 33 has two circular openings. The square rod 71 passes through the circular openings on the mounting plate 33 and does not contact the mounting plate 33 to prevent the mounting plate 33 from hindering the rotation of the square rod 71. The top of the fixing column 31 is provided with a mark. When the rotating block 65 rotates to the position of the mark, the square groove 72, the square hole 73 and the circular opening will correspond, which facilitates the installation work.

[0031] When it is necessary to replace the damaged blade 35, the fixing plate 7 can be removed from the mounting plate 33. At this time, the square rod 71 can be directly removed from the inside of the square groove 72 and the square hole 73, and the blade 35 can be directly removed from the annular groove 34.

[0032] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A height-adjustable lawnmower blade structure, comprising a mounting frame (1) and a fixing frame (2) located above the mounting frame (1), characterized in that, The mounting frame (1) is equipped with a cutter head mechanism (3). Both sides of the fixed frame (2) are equipped with lifting mechanisms (4) that drive the mounting frame (1) to lift. The cutter head mechanism (3) includes a fixed column (31), a mounting box (32) installed at the bottom of the fixed column (31), a mounting plate (33) installed at the bottom of the mounting box (32), an annular groove (34) opened on the outside of the mounting plate (33), and multiple blades (35) installed in the annular groove (34) and in a crescent shape. The mounting box (32) is equipped with an adjustment mechanism for adjusting the spread of the multiple blades (35).

2. The height-adjustable lawnmower blade structure according to claim 1, characterized in that: The mounting bracket (1) has a mounting groove (11) on its top, and the fixing column (31) is rotatably connected inside the mounting groove (11). The mounting bracket (1) has a protective cover (12) installed on its top to cover the cutter head mechanism (3).

3. The height-adjustable lawnmower blade structure according to claim 1, characterized in that: A driven wheel (5) is installed on the outside of the fixed column (31), and a rotary motor is installed on the top of the mounting frame (1). A driving wheel (51) that meshes with the driven wheel (5) is installed at the output end of the rotary motor.

4. The height-adjustable lawnmower blade structure according to claim 1, characterized in that: The adjustment mechanism includes a rotating disk (6) rotatably connected inside the mounting box (32), a first gear (61) mounted outside the rotating disk (6), a rotating rod (62) rotatably connected in the annular groove (34), and a second gear (63) mounted outside the rotating rod (62) and meshing with the first gear (61). The rotating rod (62) is connected to the blade (35) by a fixing mechanism.

5. The height-adjustable lawnmower blade structure according to claim 4, characterized in that: The fixing mechanism includes a fixing plate (7), a square rod (71) rotatably connected to the top of the fixing plate (7), a square groove (72) opened at the bottom of the rotating rod (62), and a square hole (73) opened in the blade (35). The square groove (72) and the square hole (73) are used in conjunction with the square rod (71). The top end of the square rod (71) passes through the mounting plate (33) and extends into the square groove (72) through the square hole (73). The fixing plate (7) is detachably fixed to the bottom of the mounting plate (33).

6. The height-adjustable lawnmower blade structure according to claim 4, characterized in that: The top of the rotating disk (6) is equipped with a rotating rod (64) extending to the top of the fixed column (31). A rotating block (65) is installed on the outside of the rotating rod (64). The top of the fixed column (31) is provided with a plurality of fixing holes (66) arranged around the rotating rod (64) in an annular structure. Bolts (67) that cooperate with the fixing holes (66) are screwed onto the rotating block (65).

7. The height-adjustable lawnmower blade structure according to claim 1, characterized in that: The lifting mechanism (4) includes two support frames (46), two adjusting plates (41) installed on one side of the two support frames (46) and slidably connected to the side of the fixed frame (2) and having a sickle-shaped structure, a connecting plate (43) rotatably connected between the two support frames (46), and an electric telescopic rod (42) installed on one side of the fixed frame (2) and fixedly connected to one side of one of the support frames (46). The adjusting plate (41) is provided with a first mounting hole (44) and a second mounting hole (45). The first mounting hole (44) is rotatably connected to one side of the mounting frame (1), and the second mounting hole (45) is rotatably connected to one side of the fixed frame (2).

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