Mowing mechanism with height convenient to adjust and mowing machine with mechanism

Abstract

The mowing mechanism comprises a support and a mowing assembly arranged at the bottom of the support, the support is connected with an external mowing machine body, the mowing assembly is rotationally connected with the support, a guide roller is arranged at the front end of the support, and the mowing assembly is rotationally connected with the guide roller. Lifting assemblies are arranged between the two ends of the guide roller and the support and used for adjusting the relative height between the guide roller and the support. A pressing roller is arranged at the rear end of the support, and height adjusting pieces are arranged at the two ends of the pressing roller and used for adjusting the relative height of the pressing roller and the support. According to the mowing mechanism, the relative positions of the pressing roller, the hobbing cutter, the dead knife and the guide roller are rapidly adjusted through joint cooperation of the lifting assembly and the height adjusting piece, so that the hobbing cutter and the dead knife are matched stably, the mowing uniformity and the mowing effect are improved, and meanwhile the mowing mechanism can mow grass under different terrain conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of lawn mower equipment, in particular to a lawn mower mechanism which is convenient for adjusting height and a lawn mower with the mechanism. Background Art

[0002] At present, lawn mowers generally include several main components such as a mowing mechanism, a driving mechanism, a walking mechanism and a grass collecting box. The mowing mechanism includes a roller and a bottom knife for cooperating in mowing grass, as well as a guide roller arranged at the front end of the roller and a pressure roller arranged at the rear end of the roller, wherein the bottom knife is arranged below the roller and tangent to the roller to cooperate in mowing grass. During the long-term use of the lawn mower, the roller is bound to wear out, and at this time, the position of the bottom knife needs to be adjusted accordingly to control the gap between the bottom knife and the roller to ensure the normal operation of the mowing mechanism. However, the adjustment of the existing bottom knife usually increases the overall height of the bottom knife, resulting in a change in the contact angle between the blade of the bottom knife and the roller, which reduces the degree of coordination between the bottom knife and the roller, affecting the mowing effect. Based on this, it is urgent to improve the relevant structures of this type of lawn mower to overcome the above-mentioned problems. Summary of the invention

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the utility model aims to provide a mowing mechanism that is easy to adjust the height and a mower having the mechanism.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A mowing mechanism that is convenient for adjusting height, comprising a bracket, a mowing assembly arranged at the bottom of the bracket, the bracket being connected to an external mower body, the mowing assembly being rotatably connected to the bracket, a guide roller being arranged at the front end of the bracket, and a lifting assembly being arranged between both ends of the guide roller and the bracket, the lifting assembly being used to adjust the relative height between the guide roller and the bracket;

[0006] A pressure roller is arranged at the rear end of the bracket, and height adjusting members are arranged at both ends of the pressure roller, and the height adjusting members are used to adjust the relative height between the pressure roller and the bracket.

[0007] Furthermore, the mowing assembly includes a reel and a base knife, the base knife is connected to a bracket, a blade portion is provided at one end of the base knife away from the bracket, the blade portion is tangential to the reel to cut grass, both ends of the reel are respectively rotatably connected to the bracket, and the mowing mechanism also includes a driving member for driving the reel to rotate, and the output end of the driving member is connected to the reel.

[0008] Furthermore, the lifting assembly includes a fixed plate, which is fixedly connected to the bracket, a lifting adjustment block is slidably arranged in the fixed plate, the lifting adjustment block is rotatably connected to the guide roller, and a connecting piece is arranged on the top of the fixed plate, the connecting piece passes through the top of the fixed plate and is threadedly connected to the lifting adjustment block.

[0009] Furthermore, a limiting fastener is provided at one end of the lifting and adjusting block, and the limiting fastener transversely penetrates the lifting and adjusting block and is connected to the fixing plate.

[0010] Furthermore, a sliding groove is provided on a side wall of the fixing plate away from the bracket, and the lifting adjustment block is slidably arranged in the sliding groove.

[0011] Furthermore, the lifting adjustment block is provided with scale lines, and the fixing plate is provided with reference lines for aligning with the scale lines.

[0012] Furthermore, two height adjustment members are pivotally connected to two ends of the pressure roller, respectively, and the axis center of the height adjustment member is eccentric to the axis center of the pressure roller.

[0013] Furthermore, the height adjustment member includes a pivot seat and an eccentric adjustment plate, the pivot seat is connected to the pressure roller, the eccentric adjustment plate is fixed to one end of the pivot seat away from the pressure roller, and the eccentric adjustment plate is threadedly connected to the bracket through a locking member.

[0014] Furthermore, the bracket is provided with a threaded hole matched with the locking piece, and the eccentric adjustment sheet is provided with an oblong hole corresponding to the locking piece.

[0015] The utility model also provides a lawn mower, which comprises the above-mentioned mowing mechanism which is convenient for adjusting the height.

[0016] The beneficial effect of the utility model is that the utility model discloses a mowing mechanism that is easy to adjust the height and a lawn mower with the mechanism. The mowing mechanism, through the cooperation of the lifting component and the height adjusting component, can quickly and flexibly adjust the relative positions of the pressure roller, the roller, the bottom knife and the guide roller when the roller is worn, so that the cooperation between the roller and the bottom knife is stable, which is beneficial to improving the uniformity and mowing effect of the grass, and at the same time enables the mowing mechanism to mow grass under different terrain conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a top view of the mowing mechanism of the utility model;

[0018] Figure 2 It is a side view of the mowing mechanism of the utility model;

[0019] Figure 3 It is a schematic diagram of the partial split structure of the mowing mechanism of the utility model.

[0020] Figure 4 yes Figure 3 Enlarged view at A.

[0021] The accompanying drawings are marked as follows: 1. bracket; 2. guide roller; 3. lifting assembly; 31. fixing plate; 32. lifting adjustment block; 33. connecting piece; 34. limiting fastener; 35. adjusting groove; 36. slide groove; 37. scale line; 38. reference line; 4. pressure roller; 5. height adjustment piece; 51. pivot seat; 52. eccentric adjustment piece; 53. locking piece; 54. threaded hole; 55. oblong hole; 6. hob; 7. bottom knife; 8. driving piece. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of those skilled in the art, the following embodiments and attached Figure 1-4 To further illustrate the present invention, the contents mentioned in the implementation modes are not intended to limit the present invention.

[0023] Example 1

[0024] like Figure 1-4 As shown, a mowing mechanism that is easy to adjust in height comprises a bracket 1 and a mowing assembly arranged at the bottom of the bracket 1, wherein the bracket 1 is connected to an external mower body, the mowing assembly is rotatably connected to the bracket 1, a guide roller 2 is arranged at the front end of the bracket 1, and a lifting assembly 3 is arranged between both ends of the guide roller 2 and the bracket 1, and the lifting assembly 3 is used to adjust the relative height between the guide roller 2 and the bracket 1;

[0025] A pressure roller 4 is disposed at the rear end of the support 1 , and height adjusting members 5 are disposed at both ends of the pressure roller 4 . The height adjusting members 5 are used to adjust the relative height between the pressure roller 4 and the support 1 .

[0026] In this embodiment, the mowing mechanism includes a support 1, a mowing assembly, a guide roller 2 and a pressure roller 4, wherein the guide roller 2 is used to comb the messy grass on the lawn so that the mowing assembly can trim it, the mowing assembly is used to trim the grass at a set height, and the pressure roller 4 is used to level the lawn trimmed by the mowing assembly. The mowing efficiency and effect of the mowing mechanism are improved through the three steps of combing, trimming and leveling, and the aesthetics of the modified lawn is improved. On the one hand, the mowing mechanism is provided with a lifting assembly 3 on the guide roller 2, and the relative height of the guide roller 2 and the support 1 is adjusted by the lifting assembly 3, thereby accurately controlling the height of the mowing assembly and the ground, which helps to improve the uniformity of lawn trimming. On the other hand, the mowing mechanism is provided with a height adjustment member 5 on the pressure roller 4, and the height adjustment member 5 adjusts the relative height of the pressure roller 4 and the support 1, thereby realizing the flexible adjustment of the relative position between the pressure roller 4, the support 1 and the guide roller 2, further improving the uniformity of mowing of the mowing mechanism. Specifically, when the roller cutter 6 is severely worn during long-term use, that is, the diameter of the roller cutter 6 will become smaller than before, then it is necessary to adjust the position of the bottom knife 7 so that the blade portion of the bottom knife 7 matches the roller cutter 6. However, it is difficult to control the contact angle between the blade portion and the roller cutter 6 to be the same as before the adjustment by only adjusting the height of the bottom knife 7 relative to the bracket 1. Therefore, the utility model adopts a structural design in which a lifting assembly 3 is provided at both ends of the guide roller 2 and a height adjustment member 5 is provided at both ends of the pressure roller 4. The lifting assembly 3 is used to first lower the height of the guide roller 2 relative to the bracket, and then the height of the pressure roller 4 is raised relative to the bracket 1 by the height adjustment member 5, so that the relative positions of the guide roller 2, the roller cutter 6, the bottom knife 7 and the pressure roller 4 remain unchanged. Therefore, the above-mentioned arrangement can not only improve the uniformity and aesthetics of the mowing mechanism, but also enable the mowing mechanism to mow under different terrain conditions.

[0027] Furthermore, the mowing assembly includes a reel 6 and a bottom knife 7, the bottom knife 7 is connected to the bracket 1, and the end of the bottom knife 7 away from the bracket 1 is provided with a blade portion, and the blade portion is tangential to the reel 6 to cut grass, and the two ends of the reel 6 are respectively rotatably connected to the bracket 1. The mowing mechanism also includes a driving member 8 for driving the reel 6 to rotate, and the output end of the driving member 8 is connected to the reel 6. The operation and stop of the reel 6 are controlled by opening and closing the driving member 8, and the driving member 8 is electrically connected to the power supply of the external mower.

[0028] Furthermore, the lifting assembly 3 includes a fixed plate 31, which is fixedly connected to the bracket 1. A lifting adjustment block 32 is slidably arranged in the fixed plate 31, and the lifting adjustment block 32 is rotatably connected to the guide roller 2. A connecting piece 33 is arranged on the top of the fixed plate 31, and the connecting piece 33 passes through the top of the fixed plate 31 and is threadedly connected to the lifting adjustment block 32.

[0029] Furthermore, a limiting fastener 34 is disposed at one end of the lifting and adjusting block 32 , and the limiting fastener 34 transversely penetrates the lifting and adjusting block 32 and is connected to the fixing plate 31 .

[0030] Furthermore, an adjustment slot 35 is provided in the lifting adjustment block 32 , and the bottom end of the connecting member 33 passes through the fixing plate 31 and the lifting adjustment block 32 in sequence and protrudes into the adjustment slot 35 to abut against the limiting fastener 34 .

[0031] Furthermore, a sliding groove 36 is formed on a side wall of the fixing plate 31 away from the bracket 1 , and the lifting adjustment block 32 is slidably disposed in the sliding groove 36 .

[0032] Furthermore, the lifting adjustment block 32 is provided with a scale line 37 , and the fixing plate 31 is provided with a reference line 38 for aligning with the scale line 37 .

[0033] In this embodiment, by pulling the lifting adjustment block 32 to move up and down in the slide groove 36, the specified scale line 37 on the lifting adjustment block 32 is aligned with the reference line 38 to determine the position of the lifting adjustment block 32, and then the limiting fastener 34 is tightened with the lifting adjustment block 32 and the fixing plate 31, the relative height of the guide roller 2 and the bracket 1 (or the ground) can be accurately adjusted, thereby effectively controlling the cutting height of the mowing component relative to the ground and ensuring the consistency of the cutting height.

[0034] Furthermore, two height adjustment members 5 are respectively pivotally connected to the two ends of the pressing roller 4, and the axis center of the height adjustment member 5 is eccentric to the axis center of the pressing roller 4. In this embodiment, the eccentricity is 6 mm.

[0035] Furthermore, the height adjustment member 5 includes a pivot seat 51 and an eccentric adjustment plate 52, the pivot seat 51 is connected to the pressure roller 4, the eccentric adjustment plate 52 is fixed to one end of the pivot seat 51 away from the pressure roller 4, and the eccentric adjustment plate 52 is threadedly connected to the bracket 1 through a locking member 53.

[0036] Furthermore, the bracket 1 is provided with a threaded hole 54 that cooperates with the locking member 53, and the eccentric adjustment piece 52 is provided with an oblong hole 55 that corresponds to the locking member 53. Specifically, the threaded hole 54, the oblong hole 55 and the locking member 53 are respectively two in number, and the height adjustment member 5 is stably connected to the bracket 1 through the locking member 53.

[0037] In this embodiment, the height adjustment member 5 is pivotally connected to both ends of the pressure roller 4, and the height adjustment member 5 is detachably connected to the bracket 1 through a locking member 53. When it is necessary to adjust the height of the pressure roller 4 relative to the bracket 1 (or the ground), the height adjustment member 5 only needs to be rotated 180° to increase or decrease the eccentric height of the pressure roller 4 relative to the bracket 1 (or the ground), and the eccentric height can be adjusted according to the actual application. Through the above arrangement, the height of the pressure roller 4 relative to the bracket 1 (or the ground) can be flexibly adjusted, so that the cooperation between the roller 6 and the bottom knife 7 is more stable, and the mowing height of the mowing mechanism can be accurately controlled.

[0038] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present invention is within the protection scope of the present invention.

Claims

1. A mowing mechanism that is easy to adjust in height, characterized in that: The utility model comprises a support (1) and a mowing assembly arranged at the bottom of the support (1); the support (1) is connected to an external mower body; the mowing assembly is rotatably connected to the support (1); a guide roller (2) is arranged at the front end of the support (1); a lifting assembly (3) is arranged between both ends of the guide roller (2) and the support (1); the lifting assembly (3) is used to adjust the relative height between the guide roller (2) and the support (1); A pressure roller (4) is provided at the rear end of the support (1), and height adjustment members (5) are provided at both ends of the pressure roller (4), and the height adjustment members (5) are used to adjust the relative height between the pressure roller (4) and the support (1).

2. A height-adjustable mowing mechanism according to claim 1, characterized in that: The mowing assembly comprises a reel (6) and a bottom knife (7), wherein the bottom knife (7) is connected to a bracket (1), and a blade portion is provided at one end of the bottom knife (7) away from the bracket (1), wherein the blade portion is tangentially matched with the reel (6) to cut grass, and both ends of the reel (6) are respectively rotatably connected to the bracket (1), and the mowing mechanism further comprises a driving member (8) for driving the reel (6) to rotate, and an output end of the driving member (8) is connected to the reel (6).

3. The height-adjustable mowing mechanism according to claim 1, characterized in that: The lifting assembly (3) comprises a fixed plate (31), the fixed plate (31) is fixedly connected to the bracket (1), a lifting adjustment block (32) is slidably arranged inside the fixed plate (31), the lifting adjustment block (32) is rotatably connected to the guide roller (2), and a connecting piece (33) is arranged on the top of the fixed plate (31), the connecting piece (33) passes through the top of the fixed plate (31) and is threadedly connected to the lifting adjustment block (32).

4. A height-adjustable mowing mechanism according to claim 3, characterized in that: A limiting fastener (34) is provided at one end of the lifting and adjusting block (32), and the limiting fastener (34) transversely penetrates the lifting and adjusting block (32) and is connected to the fixing plate (31).

5. The height-adjustable mowing mechanism according to claim 3, characterized in that: A sliding groove (36) is provided on a side wall of the fixing plate (31) away from the bracket (1), and the lifting and lowering adjustment block (32) is slidably arranged in the sliding groove (36).

6. The height-adjustable mowing mechanism according to claim 3, characterized in that: The lifting and lowering adjustment block (32) is provided with a scale line (37), and the fixing plate (31) is provided with a reference line (38) for aligning with the scale line (37).

7. The height-adjustable mowing mechanism according to claim 1, characterized in that: The two height adjustment members (5) are respectively pivotally connected to the two ends of the pressing roller (4), and the center of the height adjustment member (5) is eccentric to the axial center of the pressing roller (4).

8. The height-adjustable mowing mechanism according to claim 7, characterized in that: The height adjustment member (5) comprises a pivot seat (51) and an eccentric adjustment piece (52); the pivot seat (51) is connected to the pressure roller (4); the eccentric adjustment piece (52) is fixed to one end of the pivot seat (51) away from the pressure roller (4); and the eccentric adjustment piece (52) is threadedly connected to the bracket (1) via a locking member (53).

9. The height-adjustable mowing mechanism according to claim 8, characterized in that: The bracket (1) is provided with a threaded hole (54) matched with the locking piece (53), and the eccentric adjustment piece (52) is provided with an oblong hole (55) corresponding to the locking piece (53).

10. A lawn mower, characterized in that: A grass cutting mechanism with convenient height adjustment comprising the grass cutting mechanism as claimed in any one of claims 1 to 9.

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