WO2022147849A1 - 一种割草机 - Google Patents
一种割草机 Download PDFInfo
- Publication number
- WO2022147849A1 WO2022147849A1 PCT/CN2021/071832 CN2021071832W WO2022147849A1 WO 2022147849 A1 WO2022147849 A1 WO 2022147849A1 CN 2021071832 W CN2021071832 W CN 2021071832W WO 2022147849 A1 WO2022147849 A1 WO 2022147849A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- grass
- lawn mower
- blade
- supporting
- grass feeding
- Prior art date
Links
- 244000025254 Cannabis sativa Species 0.000 claims abstract description 92
- 238000005452 bending Methods 0.000 claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims description 54
- 230000008093 supporting effect Effects 0.000 claims description 38
- 238000000034 method Methods 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 241000209504 Poaceae Species 0.000 description 2
- 241001494496 Leersia Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/82—Other details
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/73—Cutting apparatus
Definitions
- the invention relates to the technical field of garden facilities, in particular to a lawn mower.
- Lawn mowers are a common tool for grass maintenance in outdoor lawns, gardens, playground grass, etc.
- a cutting chamber is arranged at the bottom of the lawn mower, a plurality of first grass feeding channels are arranged on the front side of the bottom of the lawn mower, which communicate with the cutting chamber, and a blade rotating along the horizontal plane is rotatably connected in the middle of the cutting chamber. It rotates at a certain height from the ground, so as to cut off the excessively long grass, making the grass look flat and beautiful.
- the purpose of the present invention is to provide a lawn mower, which can improve the total bending resistance of the grass by supporting the grass in the cutting process, so as to realize the smooth cutting of the grass by the blade at a lower cutting speed and reduce the cutting energy consumption during the process.
- a lawn mower comprising a lawn mower body, a cutting chamber is provided at the bottom of the lawn mower body, and a blade is rotatably connected in the middle of the cutting chamber
- the front side of the bottom of the lawn mower body is provided with a plurality of first grass feeding channels that communicate with the cutting chamber, and a plurality of the first grass feeding channels are provided to improve the overall bending resistance of the grass during the cutting process
- the support mechanism includes a base detachable on a plurality of first grass feed channels, a plurality of support sheets arranged side by side on the base and extending below the cutting chamber, the base is provided with a plurality of In the second grass feeding channels respectively communicated with the plurality of first grass feeding channels, the orthographic projection of the rotation range of the blade overlaps with the orthographic projection of the plurality of supporting pieces.
- the grass to be cut enters between the plurality of supporting pieces from the first grass feeding channel and the second grass feeding channel of the base of the support mechanism, and the grass to be cut is At this time, when cutting through the blade, a large number of grasses between the two support sheets support each other, and the support sheets can also support the grass, thereby improving the total bending resistance of the grass and realizing the blade
- the grass can be cut smoothly at a lower cutting speed, reducing the occurrence of the grass being pushed down or torn during the cutting process, and reducing the energy consumption during the cutting process.
- the present invention is further provided as follows: the lengths of the plurality of supporting sheets extending toward the cutting chamber are different, and the connecting line of the end points of the plurality of supporting sheets close to one end of the cutting chamber is in the shape of an arc whose center is on the rotational center line of the blade .
- any two adjacent supports are located.
- the grass is cut to the same length between the pieces to achieve stable cutting of the grass.
- the present invention is further provided as follows: along the extending direction of the first grass feeding channel, the length of the overlapped orthographic projection of the blade rotation range and the orthographic projections of the plurality of supporting pieces is not less than the travel distance per second of the lawn mower body: The ratio of S meters to n revolutions of the blade per second.
- the length of the grass cut by the cutting blade per revolution is the difference between the travel distance of the lawn mower body per second being S meters and the blade rotating n revolutions per second.
- the orthographic projection of the blade rotation range and the orthographic projections of the multiple support pieces are not less than the ratio of the travel distance per second of the lawn mower body to the ratio of S meters to the blade rotation per second, which can ensure that the support pieces are correct.
- the grass is supported to ensure that the total bending resistance of the grass is always improved, so that the blade can smoothly cut the grass at a lower cutting speed.
- the present invention is further provided as follows: along the extending direction of the first grass feeding channel, the length of the orthographic projection of the rotation range of the blade that overlaps with the orthographic projection of the plurality of supporting pieces is 10-30 mm.
- the travel distance of the lawn mower body per second is usually 0.6-0.8 meters, and the rotation speed of the blade per minute is usually 3000-4000 revolutions.
- the traveling distance per second is 0.6 meters and the blade speed is 4000 revolutions per minute, the ratio of the walking distance per second of the lawn mower body to the n revolutions per second of the blade is the smallest, and the ratio is 9 mm;
- the overlapping length of the orthographic projection and the orthographic projections of the plurality of supporting sheets is 10-30 mm, so as to ensure the supporting effect of the supporting sheets on the grass during actual use, so as to ensure the total bending resistance of the grass during the cutting process.
- the thickness of the supporting sheets is 4-6 mm, and the distance between two adjacent supporting sheets is 30-40 mm.
- the thickness of the supporting sheet is 4-6 mm, and the distance between two adjacent supporting sheets is 30-40 mm. At this time, the thickness of the supporting sheet is relatively thin, and the thickness of the adjacent supporting sheets is The distance between them is relatively large, which can reduce the influence on the grass entering the cutting chamber along the first grass feeding channel and the second grass feeding channel.
- the height of the support sheet is 10-15 mm.
- the height of the support sheet is 10-15 mm, and the length of the support for the grass can be increased at this time, so as to improve the total bending resistance of the grass.
- the distance between the upper surface of the support sheet and the blade is 4-6 mm.
- the distance between the upper surface of the support sheet and the blade is 4-6 mm. At this time, when the grass is supported by the support sheet, the distance between the blade and the upper surface of the support sheet is shorter, so as to ensure that the grass is at the height where the blade is cut. total bending capacity.
- the present invention is further provided as follows: the base is fixedly connected to the plurality of first grass feeding channels through a plurality of bolts.
- the base is fixedly connected to the plurality of first grass feeding channels through a plurality of bolts, thereby facilitating disassembly, assembly and replacement.
- Fig. 1 is the structural representation of the present invention
- Fig. 2 is the structural representation of the support mechanism in the present invention.
- Fig. 3 is the structural representation of the overlapping range with the support mechanism when the blade rotates in the present invention
- Figure 4 is a partial side view of the blade and support structure of the present invention.
- Embodiment a lawn mower, comprising a lawn mower body 1, a cutting chamber 11 is provided at the bottom of the lawn mower body 1, a blade 12 is rotatably connected in the middle of the cutting chamber 11, and a front side of the bottom of the lawn mower body 1 is provided There are a plurality of first grass feeding channels 13 communicating with the cutting chamber 11 .
- the plurality of first grass feeding channels 13 are provided with a supporting mechanism 2 for improving the total bending resistance of the grass during the cutting process.
- the supporting pieces 22 are arranged side by side on the base 21 and extend to the lower part of the cutting chamber 11.
- the base 21 is provided with a plurality of second grass feeding channels 211 respectively communicating with the plurality of first grass feeding channels 13, and the base 21 passes through a plurality of second grass feeding channels 211 respectively.
- the bolts 3 are fixedly connected to the plurality of first grass feeding channels 13 , and the bolts 3 are installed at the second grass feeding channels 211 and the first grass feeding channels 13 .
- the orthographic projection of the rotational range of the blade 12 overlaps the orthographic projection of the plurality of support pieces 22 .
- the lengths of the plurality of supporting sheets 22 extending toward the cutting chamber 11 are different, and the connecting line of the end points of the plurality of supporting sheets 22 close to one end of the cutting chamber 11 is in the shape of a circular arc whose center is on the rotational center line of the blade 12 .
- the length of the orthographic projection of the rotation range of the blade 12 and the orthographic projection of the plurality of supporting pieces 22 coincident (marked as L1 in the figure) is not less than the travel distance per second of the lawn mower body 1: The ratio of S meters to blade 12 n revolutions per second.
- the length ( L1 ) of the orthographic projection of the rotation range of the blade 12 coincident with the orthographic projection of the plurality of supporting pieces 22 is 10-30 mm.
- the travel distance of the lawnmower body 1 per second is usually 0.6-0.8 meters, and the rotational speed of the blade 12 is usually 3000-4000 revolutions per minute. At this time, the lawnmower body 1 travels per second.
- the ratio of the travel distance of the lawn mower body 1 per second is S meters and the ratio of n revolutions per second of the blade 12 is the smallest, and the ratio is 9 mm; therefore, the blade 12 is rotated.
- the length L1 over which the orthographic projection of the range coincides with the orthographic projection of the plurality of support sheets 22 is 10-30 mm.
- the thickness of the support sheet 22 (marked as L2 in the figure) is 4-6 mm, and the distance between two adjacent support sheets 22 (marked as L3 in the figure) is 30-40 mm. At this time, the thickness of the support sheet 22 The thickness is relatively thin, and the distance between the adjacent supporting pieces 22 is relatively large, which can reduce the influence on the entry of grass into the cutting chamber 11 along the first grass feeding channel 13 and the second grass feeding channel 211 .
- the height of the support piece 22 (marked as H1 in the figure) is 10-15 mm, at this time, the length of the support for the grass can be increased, so as to improve the total bending resistance of the grass; the distance between the upper surface of the support piece 22 and the blade 12 ( In the figure, it is marked as H2) is 4-6 mm. At this time, when the grass is supported by the supporting sheet 22, the distance between the blade 12 and the upper surface of the supporting sheet 22 is short, so as to ensure the total bending resistance of the grass at the height where the blade 12 is cut. ability.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Harvester Elements (AREA)
Abstract
一种割草机,包括割草机本体(1),割草机本体底部设置有切割腔室(11),切割腔室中部转动连接有刀片(12),割草机本体底部的前侧设置有多个第一进草通道,多个第一进草通道上设置有用于提高草在切割过程中的总抗弯能力的支承机构。该割草机可减少草在切割过程中被推倒或撕裂的情况发生,且减少切割过程中所需能耗。
Description
本发明涉及园林设施技术领域,特别涉及一种割草机。
割草机是用于户外草坪、花园、运动场草地等的草地维护保养的常用工具。在割草机底部设置有切割腔室,割草机底部前侧设置有多个与切割腔室相通的第一进草通道,在切割腔室中部转动连接有沿着水平面旋转的刀片,刀片在离地的一定高度位置上旋转,从而将过长的草切割掉,使得草地外观平整美观。
但是在刀片旋转切割草的过程中,草自身的抗弯能力很难与刀片的切割力相平衡,此时在刀片切割速度较低时,草在切割过程中被推倒或撕裂;而刀片切割速度越高,静止的草在瞬间获得刀片所传递的速度并立即产生很大的加速度以及与其方向相反的惯性力,刀片切割速度越高则惯性力越大,因而草的总抗弯能力也就越大,有利于草的顺利切割。
因此在割草机使用过程中存在如下问题:(1)在刀片切割速度较低时,在草切割过程中容易被推倒而导致没有切割掉的问题,草在切割过程中容易被撕裂而导致切割不平整的问题;(2)虽然随着刀片的切割速度逐渐提高能够逐渐解决草在切割过程中被推倒或撕裂的问题,但是在刀片高速运作时,切割过程中的能耗急剧升高。
本发明的目的是提供一种割草机,通过对切割过程中的草进行支承,以提高草的总抗弯能力,从而实现刀片在较低的切割速度下实现对草的顺利切割,减少切割过程中所需能耗。
本发明的上述技术目的是通过以下技术方案得以实现的:一种割草机,包括割草机本体,所述割草机本体底部设置有切割腔室,所述切割腔室中部转动连接有刀片,所述割草机本体底部的前侧设置有多个与切割腔室相通的第一进草通道,多个所述第一进草通道上设置有用于提高草在切割过程中的总抗弯能力的支承机构,所述支承机构包括可拆卸在多个第一进草通道上的底座、多个并排设置在底座上且延伸至切割腔室下方的支承片,所述底座上设置有多个分别与多个第一进草通道相通的第二进草通道,所述刀片旋转范围的正投影与多个支承片的正投影相重叠。
通过采用上述技术方案,在割草机本体行进过程中,待切割的草从第一进草通道、支承机构的底座的第二进草通道进入到多个支承片之间,且待切割的草的顶部穿出支承片,此时在通过刀片切割时,处于两个支承片之间数量众多的草互相支承,且支承片也能够对草进行支承,从而提高草的总抗弯能力,实现刀片在较低的切割速度下实现对草的顺利切割,减少草在切割过程中被推倒或撕裂的情况发生,且减少切割过程中所需能耗。
本发明的进一步设置为:多个所述支承片朝向切割腔室延伸的长度不同,多个所述支承片靠近切割腔室一端的端点连线呈以圆心处于刀片旋转中心线上的圆弧形。
通过采用上述技术方案,此时在刀片旋转一圈对草切割时,沿着割草机本体的前进方向(也可以说是第一进草通道的延伸方向),处于任意相邻的两个支承片之间的草所被切割的长度相同,以实现稳定的对草进行切割。
本发明的进一步设置为:沿着所述第一进草通道的延伸方向,所述刀片旋转范围的正投影与多个支承片的正投影重合的长度不小于割草机本体每秒行进距离为S米与刀片每秒转n圈的比值。
通过采用上述方案,在沿着第一进草通道的延伸方向中,切割片每转一圈所切割的草的长度为割草机本体每秒行进距离为S米与刀片每秒转n圈的比值,此时使得刀片旋转范围的正投影与多个支承片的正投影重合的长度不小于割草机本体每秒行进距离为S米与刀片每秒转n圈的比值,能保证支承片对草进行支承,以保证一直提高草的总抗弯能力的状态,以实现刀片在较低的切割速度下实现对草的顺利切割。
本发明的进一步设置为:沿着所述第一进草通道的延伸方向,所述刀片旋转范围的正投影与多个支承片的正投影重合的长度为10-30毫米。
通过采用上述技术方案,在割草机本体的实际使用时,割草机本体每秒行进距离为通常0.6-0.8米,刀片每分钟转速通常为3000-4000圈,此时在割草机本体每秒行进距离为0.6米,刀片每分钟转速为4000圈时,割草机本体每秒行进距离为S米与刀片每秒转n圈的比值最小,且比值为9毫米;通过使得刀片旋转范围的正投影与多个支承片的正投影重合的长度为10-30毫米,从而能够保证在实际使用过程中,支承片对草的支承效果,以保证草在被切割过程中的总抗弯能力。
本发明的进一步设置为:所述支承片的厚度为4-6毫米,相邻的两个所述支承片之间的间距为30-40毫米。
通过采用上述技术方案,支承片的厚度为4-6毫米,同时相邻的两个支承片之间的间距为30-40毫米,此时支承片的厚度较薄,相邻的支承片的之间的间距较大,此时能减少对草沿着第一进草通道、第二进草通道进入到切割腔室内的影响。
本发明的进一步设置为:所述支承片的高度为10-15毫米。
通过采用上述技术方案,支承片的高度为10-15毫米,此时能提高对草的支承长度,以提高草的总抗弯能力。
本发明的进一步设置为:所述支承片上表面到刀片之间的间距为4-6毫米。
通过采用上述技术方案,支承片上表面到刀片之间的间距为4-6毫米,此时在通过支承片对草支承时,刀片与支承片上表面距离较短,从而保证草处在刀片切割所在高度的总抗弯能力。
本发明的进一步设置为:所述底座通过多个螺栓固定连接在多个第一进草通道上。
通过采用上述技术方案,底座通过多个螺栓固定连接在多个第一进草通道内,从而便于拆装更换。
图1是本发明的结构示意图;
图2是本发明中支承机构的结构示意图;
图3是本发明中刀片旋转时与支承机构重合范围的结构示意图;
图4是本发明中刀片与支承结构的局部侧视图。
附图标记:1、割草机本体;11、切割腔室;12、刀片;13、第一进草通道;2、支承机构;21、底座;211、第二进草通道;22、支承片;3、螺栓。
以下结合附图对本发明作进一步详细说明。
实施例:一种割草机,包括割草机本体1,割草机本体1底部设置有切割腔室11,切割腔室11中部转动连接有刀片12,割草机本体1底部的前侧设置有多个与切割腔室11相通的第一进草通道13。
多个第一进草通道13上设置有用于提高草在切割过程中的总抗弯能力的支承机构2,支承机构2包括可拆卸在多个第一进草通道13上的底座21、多个并排设置在底座21上且延伸至切割腔室11下方的支承片22,底座21上设置有多个分别与多个第一进草通道13相通的第二进草通道211,底座21通过多个螺栓3固定连接在多个第一进草通道13上,螺栓3安装在第二进草通道211和第一进草通道13处。
刀片12旋转范围的正投影与多个支承片22的正投影相重叠。多个支承片22朝向切割腔室11延伸的长度不同,多个支承片22靠近切割腔室11一端的端点连线呈以圆心处于刀片12旋转中心线上的圆弧形。沿着第一进草通道13的延伸方向,刀片12旋转范围的正投影与多个支承片22的正投影重合的长度(图中标注为L1)不小于割草机本体1每秒行进距离为S米与刀片12每秒转n圈的比值。沿着第一进草通道13的延伸方向,刀片12旋转范围的正投影与多个支承片22的正投影重合的长度(L1)为10-30毫米。在割草机本体1的实际使用时,割草机本体1每秒行进距离为通常0.6-0.8米,刀片12每分钟转速通常为3000-4000圈,此时在割草机本体1每秒行进距离为0.6米,刀片12每分钟转速为4000圈时,割草机本体1每秒行进距离为S米与刀片12每秒转n圈的比值最小,且比值为9毫米;因此使得刀片12旋转范围的正投影与多个支承片22的正投影重合的长度L1为10-30毫米。
支承片22的厚度(图中标注为L2)为4-6毫米,相邻的两个支承片22之间的间距(图中标注为L3)为30-40毫米,此时支承片22的厚度较薄,相邻的支承片22的之间的间距较大,此时能减少对草沿着第一进草通道13、第二进草通道211进入到切割腔室11内的影响。支承片22的高度(图中标注为H1)为10-15毫米,此时能提高对草的支承长度,以提高草的总抗弯能力;支承片22上表面到刀片12之间的间距(图中标注为H2)为4-6毫米,此时在通过支承片22对草支承时,刀片12与支承片22上表面距离较短,从而保证草处在刀片12切割所在高度的总抗弯能力。
实施效果:在割草机本体行进过程中,待切割的草从第一进草通道、支承机构的底座的第二进草通道进入到多个支承片之间,且待切割的草的顶部穿出支承片,此时在通过刀片切割时,处于两个支承片之间数量众多的草互相支承,且支承片也能够对草进行支承,从而提高草的总抗弯能力,实现刀片在较低的切割速度下实现对草的顺利切割,减少草在切割过程中被推倒或撕裂的情况发生,且减少切割过程中所需能耗。
本具体实施例仅仅是对本发明的解释,其并不是对本发明的限制,本领域技术人员在阅读完本说明书后可以根据需要对本实施例做出没有创造性贡献的修改,但只要在本发明的权利要求范围内都受到专利法的保护。
Claims (8)
- 一种割草机,包括割草机本体(1),所述割草机本体(1)底部设置有切割腔室(11),所述切割腔室(11)中部转动连接有刀片(12),所述割草机本体(1)底部的前侧设置有多个与切割腔室(11)相通的第一进草通道(13),其特征在于:多个所述第一进草通道(13)上设置有用于提高草在切割过程中的总抗弯能力的支承机构(2),所述支承机构(2)包括可拆卸在多个第一进草通道(13)上的底座(21)、多个并排设置在底座(21)上且延伸至切割腔室(11)下方的支承片(22),所述底座(21)上设置有多个分别与多个第一进草通道(13)相通的第二进草通道(211),所述刀片(12)旋转范围的正投影与多个支承片(22)的正投影相重叠。
- 根据权利要求1所述的一种割草机,其特征在于:多个所述支承片(22)朝向切割腔室(11)延伸的长度不同,多个所述支承片(22)靠近切割腔室(11)一端的端点连线呈以圆心处于刀片(12)旋转中心线上的圆弧形。
- 根据权利要求2所述的一种割草机,其特征在于:沿着所述第一进草通道(13)的延伸方向,所述刀片(12)旋转范围的正投影与多个支承片(22)的正投影重合的长度不小于割草机本体(1)每秒行进距离为S米与刀片(12)每秒转n圈的比值。
- 根据权利要求3所述的一种割草机,其特征在于:沿着所述第一进草通道(13)的延伸方向,所述刀片(12)旋转范围的正投影与多个支承片(22)的正投影重合的长度为10-30毫米。
- 根据权利要求1所述的一种割草机,其特征在于:所述支承片(22)的厚度为4-6毫米,相邻的两个所述支承片(22)之间的间距为30-40毫米。
- 根据权利要求1所述的一种割草机,其特征在于:所述支承片(22)的高度为10-15毫米。
- 根据权利要求1所述的一种割草机,其特征在于:所述支承片(22)上表面到刀片(12)之间的间距为4-6毫米。
- 根据权利要求1所述的一种割草机,其特征在于:所述底座(21)通过多个螺栓(3)固定连接在多个第一进草通道(13)上。
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CN112655355B (zh) | 2024-04-26 |
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