Cutter head adjusting structure of mowing machine

Abstract

The utility model relates to a mower cutterhead adjusting structure which is arranged between a cutterhead and a frame and comprises a front rotating shaft, a rear rotating shaft and a connecting rod transmission mechanism. Two ends of the front rotating shaft are rotatably mounted on the frame, a front swing arm is fixed on the front rotating shaft, the end part of the front swing arm is rotatably connected to the cutter head, two ends of the rear rotating shaft are rotatably mounted on the frame, a rear swing arm is fixed on the rear rotating shaft, and the end part of the rear swing arm is rotatably mounted on the cutter head; the connecting rod transmission mechanism comprises a linkage rod, a front crank and a rear crank, one end of the front crank is fixed to the front rotating shaft, the other end of the front crank is hinged to one end of the linkage rod, one end of the rear crank is fixed to the rear rotating shaft, the other end of the rear crank is hinged to the other end of the linkage rod, and the linkage rod is fixed to the rear rotating shaft. And a tension spring is arranged between the frame and the linkage rod. The cutter head has the effect of reducing the force required for adjusting the height of the cutter head.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of a weeding device, in particular to a mower cutterhead adjusting structure. BACKGROUND

[0002] A mower is a mechanical tool for trimming lawns, vegetation and the like, which saves the working time of weeding workers and reduces a large amount of human resources. In the process of mowing, according to the height of the lawn or vegetation, the trimming height of the mower needs to be adjusted at any time, that is, the height of the cutting tool of the mower needs to be adjusted.

[0003] At present, a cutterhead adjusting mechanism and a mower are disclosed in Chinese Patent No. 2023118487285, which is used for adjusting the height of the cutterhead. The cutterhead has a first end and a second end. The adjusting mechanism comprises a first linkage assembly, two second linkage assemblies and a linkage rod. The two linkage assemblies are connected by a connecting rod. The first linkage assembly and the second linkage assemblies are connected by the linkage rod. Only the gear lever connected with the second linkage assembly needs to be operated, so that the height of the cutterhead can be adjusted.

[0004] According to the related technology in the above, the application believes that the above-mentioned can realize the adjustment of the cutterhead, but the cutterhead is provided with a cutting tool, and the overall weight of the cutterhead is large, so that the force required for the height adjustment of the cutterhead is large, and therefore there is room for improvement. CONTENT OF THE UTILITY MODEL

[0005] In order to reduce the force required for the height adjustment of the cutterhead, the application provides a mower cutterhead adjusting structure.

[0006] The application provides a mower cutterhead adjusting structure, which adopts the following technical scheme:

[0007] A mower cutterhead adjusting structure is arranged between a cutterhead and a frame. The adjusting structure comprises a front rotating shaft, a rear rotating shaft and a connecting rod transmission mechanism.

[0008] Both ends of the front rotating shaft are rotatably arranged on the frame. A front swing arm is fixed on the front rotating shaft. An end of the front swing arm is rotatably connected to the cutterhead. Both ends of the rear rotating shaft are rotatably arranged on the frame. A rear swing arm is fixed on the rear rotating shaft. An end of the rear swing arm is rotatably arranged on the cutterhead.

[0009] The connecting rod transmission mechanism comprises a connecting rod, a front crank and a rear crank. One end of the front crank is fixed on the front rotating shaft. The other end of the front crank is hingedly connected to one end of the connecting rod. One end of the rear crank is fixed on the rear rotating shaft. The other end of the rear crank is hingedly connected to the other end of the connecting rod. A tension spring is arranged between the frame and the connecting rod.

[0010] Preferably, the linkage rod is provided with at least one connecting hole spaced apart along the axial direction thereof, the frame is provided with a fixing sheet, one end of the tension spring is connected to the fixing sheet, and the other end of the tension spring is connected to the connecting hole.

[0011] Preferably, the cutter head is provided with a front connecting sheet, the front connecting sheet is provided with a front waist-shaped hole arranged along the vertical direction, and the end of the front swing arm is hingedly connected in the front waist-shaped hole.

[0012] Preferably, the cutter head is provided with a rear connecting sheet, the rear connecting sheet is provided with a rear waist-shaped hole arranged along the vertical direction, and the end of the rear swing arm is connected in the rear waist-shaped hole through an adjusting part.

[0013] Preferably, the adjusting part comprises an adjusting block, an adjusting rod, an upper adjusting nut and a lower adjusting nut, the adjusting block is hingedly connected to the end of the rear swing arm, the upper end of the adjusting rod is inserted into the adjusting block, the lower end of the adjusting rod is hingedly connected to the rear waist-shaped hole, the upper adjusting nut is threadedly connected to the upper end of the adjusting rod and abuts against the upper surface of the adjusting block, and the lower adjusting nut is threadedly connected to the lower end of the adjusting rod and abuts against the lower surface of the adjusting block.

[0014] Preferably, the frame is provided with an adjusting assembly for driving the rear rotating shaft to rotate.

[0015] Preferably, the adjusting assembly comprises an adjusting crank and an adjusting handle, one end of the adjusting crank is rotatably connected to the frame, the adjusting handle is connected to the other end of the adjusting crank, the middle part of the adjusting crank is connected to the rear rotating shaft through a linkage part, and the frame is provided with a limiting part for limiting the position of the adjusting handle.

[0016] Preferably, the limiting part comprises an adjusting plate, the adjusting plate is provided with a limiting slot, a plurality of limiting clamping grooves are spaced apart on one side slot wall of the limiting slot, one end of the adjusting handle is rotatably connected to the other end of the adjusting crank, the adjusting handle is accommodated in the limiting slot, and the adjusting handle is provided with limiting teeth clamping matched with the limiting clamping grooves.

[0017] Preferably, a torsional spring is sleeved on the adjusting handle, one end of the torsional spring is fixed on the adjusting handle, and the other end of the torsional spring is fixed on the adjusting crank.

[0018] Preferably, the linkage part comprises a first linkage rod and a second linkage rod, one end of the first linkage rod is hingedly connected to the middle part of the adjusting crank, the other end of the first linkage rod is hingedly connected to one end of the second linkage rod, and the other end of the second linkage rod is fixed on the rear rotating shaft.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] In the present application, the front shaft is rotated by the connecting rod transmission mechanism driven by the rotation of the rear shaft, so that the height of the cutter head can be adjusted. The spring connects the frame and the connecting rod together, and the weight of the cutter head can be balanced by the spring, so that the force required for height adjustment of the cutter head can be reduced, and the operation can be labor-saving. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the first structure diagram of the adjusting structure.

[0022] Figure 2 is a side view of the adjusting structure.

[0023] Figure 3 is the second structure diagram of the adjusting structure.

[0024] BRIEF DESCRIPTION OF DRAWINGS: 1, cutter head; 2, frame; 3, front shaft; 4, rear shaft; 5, connecting rod transmission mechanism; 51, connecting rod; 52, front crank; 53, rear crank; 54, spring; 55, connecting hole; 56, fixed piece; 6, front swing arm; 7, front connecting piece; 8, front waist-shaped hole; 9, rear swing arm; 10, rear connecting piece; 11, rear waist-shaped hole; 12, adjusting part; 121, adjusting block; 122, adjusting rod; 123, upper adjusting nut; 124, lower adjusting nut; 13, adjusting assembly; 131, adjusting crank; 132, adjusting handle; 14, limiting part; 141, adjusting plate; 142, limiting groove; 143, limiting clamping groove; 144, limiting teeth; 145, torsional spring; 15, linkage part; 151, first linkage rod; 152, second linkage rod. DETAILED DESCRIPTION

[0025] The following will be described in detail in combination with the accompanying drawings Figures 1-3 The present application will be further described in detail.

[0026] A cutter head adjusting structure of a mower, as shown in Figure 1 and Figure 2 , is arranged between the cutter head 1 and the frame 2, and the adjusting structure is used to connect the cutter head 1 to the frame 2, so as to realize the height adjustment of the cutter head 1 on the frame 2.

[0027] Specifically, the adjusting structure includes a front shaft 3, a rear shaft 4, and a connecting rod transmission mechanism 5.

[0028] The front rotating shaft 3 is rotatably installed at both ends of the frame 2, the front swing arm 6 is fixed on the front rotating shaft 3, the front swing arm 6 is sleeved and fixed on the front rotating shaft 3, and the end of the front swing arm 6 is rotatably connected to the cutter head 1. Specifically, the front connecting plate 7 is arranged on the cutter head 1, the front waist-shaped hole 8 is arranged on the front connecting plate 7, the front waist-shaped hole 8 is arranged in the vertical direction, and the end of the front swing arm 6 is hingedly connected in the front waist-shaped hole 8. Among them, the front swing arm 6 and the front connecting plate 7 are provided with two, the two front swing arms 6 are arranged at intervals on the front rotating shaft 3, the two front connecting plates 7 are fixed at intervals on the cutter head 1, and the positions of the two front swing arms 6 and the two front connecting plates 7 are opposite.

[0029] The rear rotating shaft 4 is rotatably installed at both ends of the frame 2, the rear swing arm 9 is fixed on the rear rotating shaft 4, the rear swing arm 9 is sleeved and fixed on the rear rotating shaft 4, and the end of the rear swing arm 9 is rotatably installed on the cutter head 1. Specifically, the rear connecting plate 10 is arranged on the cutter head 1, the rear waist-shaped hole 11 is arranged on the rear connecting plate 10, the rear waist-shaped hole 11 is arranged in the vertical direction, and the end of the rear swing arm 9 is connected to the rear waist-shaped hole 11 through the adjusting part 12. Among them, the rear swing arm 9 and the rear connecting plate 10 are provided with two, the two rear swing arms 9 are arranged at intervals on the rear rotating shaft 4, the two rear connecting plates 10 are fixed at intervals on the cutter head 1, and the positions of the two rear swing arms 9 and the two rear connecting plates 10 are opposite.

[0030] The adjusting part 12 includes an adjusting block 121, an adjusting rod 122, an upper adjusting nut 123 and a lower adjusting nut 124, the adjusting block 121 is hingedly connected to the end of the rear swing arm 9, the upper end of the adjusting rod 122 is inserted into the adjusting block 121, the lower end of the adjusting rod 122 is hingedly connected to the rear waist-shaped hole 11, the upper adjusting nut 123 is threadedly connected to the upper end of the adjusting rod 122 and abuts against the upper surface of the adjusting block 121, and the lower adjusting nut 124 is threadedly connected to the lower end of the adjusting rod 122 and abuts against the lower surface of the adjusting block 121.

[0031] Through the arrangement of the adjusting part 12, the connecting height between the rear swing arm 9 and the cutter head 1 can be adjusted, so that the cutter head 1 can adapt to different inclined working conditions.

[0032] The connecting rod transmission mechanism 5 is used for connecting the front rotating shaft 3 and the rear rotating shaft 4.

[0033] Referring to FIGS. 1-5, Figure 1 and Figure 2 The connecting rod transmission mechanism 5 includes a connecting rod 51, a front crank 52 and a rear crank 53, one end of the front crank 52 is sleeved and fixed on the front rotating shaft 3, in the embodiment, the front crank 52 is integrally formed on one of the front swing arms 6, the other end of the front crank 52 is hingedly connected to one end of the connecting rod 51, one end of the rear crank 53 is sleeved and fixed on the rear rotating shaft 4, the other end of the rear crank 53 is hingedly connected to the other end of the connecting rod 51, and the frame 2 and the connecting rod 51 are provided with a tension spring 54.

[0034] Specifically, the linkage rod 51 is provided with at least one connecting hole 55 in the axial direction, the frame 2 is provided with a fixed sheet 56, one end of the tension spring 54 is connected to the fixed sheet 56, and the other end of the tension spring 54 is connected to the connecting hole 55. The tension spring 54 connects the frame 2 and the linkage rod 51 together, and through the setting of the tension spring 54, the weight of the cutter head 1 can be balanced and offset, so that the force required for height adjustment of the cutter head 1 can be reduced, and the purpose of labor saving is achieved.

[0035] The frame 2 is provided with an adjusting assembly 13 for driving the rear rotating shaft 4 to rotate.

[0036] Referring to FIGS. 1, 2 and 3, Figure 2 and Figure 3 The adjusting assembly 13 includes an adjusting crank 131 and an adjusting handle 132, one end of the adjusting crank 131 is rotatably connected to the frame 2, the adjusting handle 132 is connected to the other end of the adjusting crank 131, the middle part of the adjusting crank 131 is connected to the rear rotating shaft 4 through a linkage part 15, and the frame 2 is provided with a limiting part 14 for limiting the position of the adjusting handle 132.

[0037] Specifically, the limiting part 14 includes an adjusting plate 141, the adjusting plate 141 is fixed to the frame 2 or the vehicle body of the mower, the adjusting plate 141 is provided with a limiting slot 142, a plurality of limiting clamping grooves 143 are provided on one side groove wall of the limiting slot 142 in the axial direction, one end of the adjusting handle 132 is rotatably connected to the other end of the adjusting crank 131, the adjusting handle 132 is accommodated in the limiting slot 142, and the adjusting handle 132 is provided with limiting teeth 144 clamped and matched with the limiting clamping grooves 143. By rotating the adjusting handle 132, the limiting teeth 144 and the limiting clamping grooves 143 can be clamped and matched, so that the fixing of the adjusting handle 132 at the corresponding position is realized, and the fixing of the height position of the cutter head 1 is realized.

[0038] The adjusting handle 132 is sleeved with a torsion spring 145, one end of the torsion spring 145 is fixed to the adjusting handle 132, and the other end of the torsion spring 145 is fixed to the adjusting crank 131.

[0039] Specifically, the linkage part 15 includes a first linkage rod 151 and a second linkage rod 152, one end of the first linkage rod 151 is hingedly connected to the middle part of the adjusting crank 131, the other end of the first linkage rod 151 is hingedly connected to one end of the second linkage rod 152, and the other end of the second linkage rod 152 is fixed to the rear rotating shaft 4.

[0040] Therefore, when the height of the cutter head 1 needs to be adjusted, the adjusting handle 132 is swung, the adjusting handle 132 slides in the limiting slot 142, the adjusting handle 132 drives the adjusting crank 131 to rotate, the adjusting crank 131 drives the rear rotating shaft 4 to rotate through the linkage part 15, and the rear rotating shaft 4 drives the rear side of the cutter head 1 to lift through the rear swing arm 9;

[0041] When the rear rotating shaft 4 rotates, the front rotating shaft 3 is driven to rotate synchronously by the connecting rod transmission mechanism 5, and the front rotating shaft 3 drives the front side of the cutter head 1 to lift up through the front swing arm 6, so as to realize the adjustment of the height of the cutter head 1.

[0042] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A mower deck adjustment structure arranged between a deck (1) and a frame (2), characterized in that, The adjusting structure comprises a front rotating shaft (3), a rear rotating shaft (4) and a connecting rod transmission mechanism (5); Both ends of the front rotating shaft (3) are rotatably installed on the frame (2), a front swing arm (6) is fixed on the front rotating shaft (3), and an end of the front swing arm (6) is rotatably connected to the cutter head (1); both ends of the rear rotating shaft (4) are rotatably installed on the frame (2), a rear swing arm (9) is fixed on the rear rotating shaft (4), and an end of the rear swing arm (9) is rotatably installed on the cutter head (1); The connecting rod transmission mechanism (5) comprises a connecting rod (51), a front crank (52) and a rear crank (53), one end of the front crank (52) is fixed on the front rotating shaft (3), the other end of the front crank (52) is hingedly connected to one end of the connecting rod (51), one end of the rear crank (53) is fixed on the rear rotating shaft (4), and the other end of the rear crank (53) is hingedly connected to the other end of the connecting rod (51), A tension spring (54) is arranged between the frame (2) and the connecting rod (51).

2. The mower deck adjustment structure of claim 1, wherein, The connecting rod (51) is provided with at least one connecting hole (55) spaced apart along the axial direction thereof, a fixed sheet (56) is arranged on the frame (2), one end of the tension spring (54) is connected to the fixed sheet (56), and the other end of the tension spring (54) is connected to the connecting hole (55).

3. The mower deck adjustment structure of claim 1, wherein, A front connecting sheet (7) is arranged on the cutter head (1), a front waist-shaped hole (8) is arranged on the front connecting sheet (7), the front waist-shaped hole (8) is arranged in the vertical direction, and an end of the front swing arm (6) is hingedly connected in the front waist-shaped hole (8).

4. The mower deck adjustment structure of claim 1, wherein, A rear connecting sheet (10) is arranged on the cutter head (1), a rear waist-shaped hole (11) is arranged on the rear connecting sheet (10), the rear waist-shaped hole (11) is arranged in the vertical direction, and an end of the rear swing arm (9) is connected in the rear waist-shaped hole (11) through an adjusting part (12).

5. A mower deck adjustment structure according to claim 4 wherein, The adjusting part (12) comprises an adjusting block (121), an adjusting rod (122), an upper adjusting nut (123) and a lower adjusting nut (124), the adjusting block (121) is hingedly connected to the end of the rear swing arm (9), the upper end of the adjusting rod (122) is inserted into the adjusting block (121), the lower end of the adjusting rod (122) is hingedly connected in the rear waist-shaped hole (11), the upper adjusting nut (123) is threadedly connected to the upper end of the adjusting rod (122) and abuts against the upper surface of the adjusting block (121), and the lower adjusting nut (124) is threadedly connected to the lower end of the adjusting rod (122) and abuts against the lower surface of the adjusting block (121).

6. The mower deck adjustment structure of claim 1, wherein, An adjusting assembly (13) for driving the rear rotating shaft (4) to rotate is arranged on the frame (2).

7. A mower deck adjustment structure according to claim 6 wherein, The adjusting assembly (13) comprises an adjusting crank (131) and an adjusting handle (132), one end of the adjusting crank (131) is rotationally connected to the frame (2), the adjusting handle (132) is connected to the other end of the adjusting crank (131), the middle part of the adjusting crank (131) is connected to the rear rotating shaft (4) through a linkage (15), and the frame (2) is provided with a limiting part (14) for limiting the position of the adjusting handle (132).

8. A mower deck adjustment structure according to claim 7, wherein The limiting part (14) comprises an adjusting plate (141), the adjusting plate (141) is provided with a limiting groove (142), a plurality of limiting clamping grooves (143) are arranged on one side groove wall of the limiting groove (142) at intervals, one end of the adjusting handle (132) is rotationally connected to the other end of the adjusting crank (131), the adjusting handle (132) is accommodated in the limiting groove (142), and the adjusting handle (132) is provided with a limiting tooth (144) matched with the limiting clamping groove (143).

9. A mower deck adjustment structure according to claim 8 wherein, A torsional spring (145) is sleeved on the adjusting handle (132), one end of the torsional spring (145) is fixed on the adjusting handle (132), and the other end of the torsional spring (145) is fixed on the adjusting crank (131).

10. The mower deck adjustment structure of claim 7, wherein, The linkage (15) comprises a first linkage rod (151) and a second linkage rod (152), one end of the first linkage rod (151) is hingedly connected to the middle part of the adjusting crank (131), the other end of the first linkage rod (151) is hingedly connected to one end of the second linkage rod (152), and the other end of the second linkage rod (152) is fixed on the rear rotating shaft (4).

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