WO2015184674A1 - 割草机防护装置及割草机 - Google Patents

割草机防护装置及割草机 Download PDF

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Publication number
WO2015184674A1
WO2015184674A1 PCT/CN2014/082806 CN2014082806W WO2015184674A1 WO 2015184674 A1 WO2015184674 A1 WO 2015184674A1 CN 2014082806 W CN2014082806 W CN 2014082806W WO 2015184674 A1 WO2015184674 A1 WO 2015184674A1
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WO
WIPO (PCT)
Prior art keywords
guard
casing
lawnmower
lawn mower
blade assembly
Prior art date
Application number
PCT/CN2014/082806
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English (en)
French (fr)
Inventor
郑亚平
李信
陈凤梧
Original Assignee
嘉兴亚特园林机械研究所
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Publication of WO2015184674A1 publication Critical patent/WO2015184674A1/zh

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Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01DHARVESTING; MOWING
    • A01D34/00Mowers; Mowing apparatus of harvesters
    • A01D34/01Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/82Other details

Definitions

  • the present invention relates to a guard and lawn mower for a lawn trimmer, in particular for a rotary blade cutter of an automatic, self-guided, free-standing lawn trimmer.
  • a conventional rotary lawn trimmer with a motor-driven blade rotating about a substantially vertical axis requires a protective structure around the blade to prevent damage to the user or other people close to the trimmer during operation.
  • the existing protective structure is provided with a fence type cover structure formed by a plurality of connecting bars I 03 outside the blade assembly 02 at the bottom of the trimmer housing 01, and the connecting strip I 03 is connected at the top through the connecting rod II 04.
  • the inevitable problems of this protective structure are: 1.
  • the trimmer has a large resistance when it is working, and the automatic trimmer is required to provide more power; 2.
  • the fence type cover structure The scope of protection is limited. When the operator or child plays, the arms, arms, fingers, etc.
  • the guard and the casing are an integrally formed unitary structure. It is easy to manufacture with one-piece structure, no need to install, good strength and not easy to damage.
  • the guard member is a long piece of rib, and the rib extends in a direction consistent with the traveling direction of the mower during operation.
  • the extending direction of the long ribs is set to coincide with the direction of travel of the mower, and the bottom surface of the conventional mower casing is changed.
  • the gap between the ground and the ground is large, and the body part of the operator or child's arm and fingers easily protrudes from the gap between the bottom surface of the mower casing and the ground and touches the cutter head assembly; due to the long ribs
  • the extension direction is set to be consistent with the direction of travel of the lawn mower.
  • the lawn mower When mowing the lawn, the lawn mower has a guiding effect on the grass without pressing the grass when passing the grass to be cut; the lower part of the cutter head assembly does not need to be Providing protection eliminates the need to completely cover the guards of the blade assembly, greatly reducing the drive resistance of the mower.
  • the distance from the bottom surface I of the rib away from the end of the blade assembly to the bottom surface of the casing gradually increases in a direction in which the rib extends from the end remote from the blade assembly toward the blade assembly.
  • the ribs form a wedge-shaped tip at the end remote from the blade assembly.
  • the guard column and the cutter holder are integrally formed in one piece.
  • the cutter holder has a reinforcing tab that is connected to the side of the guard column.
  • the guard column will not break easily.
  • the guard is a plurality of guard posts disposed on a bottom surface of the casing.
  • the guard is placed in a guard column, which also acts to block the arm or finger.
  • the guard columns are arranged in a row, and the direction of extension of each row of guard columns coincides with the direction of travel of the lawn mower during operation.
  • the present invention also provides a lawn mower having the above-described lawn mower protection device.
  • the maximum distance from the bottom surface of the guard to the ground should be within 38.5mm, and the maximum distance between two adjacent guards should be controlled within 38.5mm.
  • the two sides of the component in the direction of travel of the mower are the front and rear sides, and the other two sides are the left and right sides.
  • the bottom surface of the guard on the left and right sides of the blade assembly is preferably lower than the height of the blade assembly. In the guards on the front and rear sides of the blade assembly, at least some of the guards should be distributed over a range of 80 mm from the blade assembly.
  • the invention adopts the lawn mower protection device and the lawn mower provided by the above technical solution, and the gap between the bottom surface of the lawn mower casing and the ground is changed by providing a plurality of guards around the blade assembly on the bottom surface of the lawn mower casing.
  • the bigger problem is that when the lawn mower cuts the grass, the ribs have a guiding effect on the grass, which can greatly reduce the driving resistance.
  • Figure 1 shows an existing lawn mower with a protective structure
  • FIG. 2 is a partial structural schematic view of a protective structure of a conventional lawn mower; 3 is a schematic structural view of Embodiment 1 of the present invention;
  • FIG. 4 is a schematic structural view of a blade assembly of the present invention.
  • FIG. 5 is a schematic partial structural view of a lawn mower according to a second embodiment of the present invention.
  • FIG. 6 is a schematic structural view of a portion of a rib in a third embodiment of the present invention replaced with a guard column;
  • FIG. 7 is a schematic structural view showing the replacement of all the ribs into a guard column in the third embodiment of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • 3 and 4 are an embodiment of a lawn mower protection device, wherein the lawn mower has a casing 1 and a cutter holder 21 mounted on the casing 1 and exposed to the bottom surface of the casing 1, the cutter frame A cutter disc 22 is disposed under the cutter 21, and three evenly arranged blades 23 are mounted on the edge of the cutter disc 22, and a drive motor is mounted on the cutter disc holder 21. The output end of the drive motor is coupled to the cutter disc 22 and drives the cutter disc to rotate.
  • the grass machine protection device comprises a plurality of long sheet-like ribs 3 disposed on the bottom surface of the casing 1 and a plurality of guard columns 4 disposed on the bottom surface of the cutter head frame 21; the longitudinal direction of the ribs 3 is consistent with the extending direction of the bottom surface of the casing 1 and the width The direction is substantially perpendicular to the bottom surface of the casing 1, the rib 3 surrounds the cutter holder 21, and the guard column 4 surrounds the cutter head 22, and the extending direction of the rib 3 coincides with the traveling direction of the lawn mower, adjacent to the two There is a gap between the bars 3, and there is a gap between the two adjacent guard columns 4.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • an embodiment of the lawn mower has a casing 1 and a cutter frame 21 mounted on the casing 1 and exposed to the bottom surface of the casing 1.
  • the bottom surface of the casing 1 There is a circular groove 11, the center of the circular groove 11 has a hole 12, the top of the cutter holder 21 has a cylinder 212, the cutter holder 21 is disposed in the circular groove 11, and the cylinder 212 extends into the hole 12 and the casing
  • the outer wall of the cylinder 212 is provided with a slider 213.
  • the bottom surface I 31 and the bottom surface 1132 , the bottom surface I 31 and the two sides of the rib smoothly transition, and the bottom surface I
  • the distance from 31 to the bottom surface of the casing 1 gradually increases from zero from the end connected to the bottom surface of the casing 1 to the end connected to the bottom surface II 32 of the rib.
  • the guard column 4 and the cutter holder 21 are integrally formed in one piece.
  • Cutter stand 21 has A reinforcing connecting piece 211 connected to the side of the guard column 4, the reinforcing connecting piece 211 has a reinforcing fixing effect on the guard column 4.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the difference from the first embodiment is that some or all of the ribs 3 on the bottom surface of the casing 1 are replaced by a plurality of guard columns 4 arranged in a row, and the arrangement direction of each row of the guard columns 4 and the mower operating The traveling direction is the same, and there is a certain distance between the adjacent two rows of guard columns 4.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Harvester Elements (AREA)

Abstract

一种割草机防护装置及割草机,所述割草机具有机壳(1)和刀片组件,所述刀片组件设在机壳(1)的底面下方,所述割草机防护装置包括凸起在机壳(1)底面的若干防护件,所述防护件围在刀片组件的周围,相连两个防护件之间有间距。通过在割草机机壳(1)底面位于刀片组件的周围设置防护件,解决了机壳底面与地面之间间隙较大的问题,割草时筋条还具有疏导草的作用,减小驱动阻力。

Description

割草机防护装 ¾¾割靴 技术领域
本发明涉及一种用于草坪修剪机特别是用于一种自动、 自导、 自立式草坪 修剪机的转动刀片式切割器的防护装置及割草机。
背景技术
自动草坪修剪机中, 电机驱动的刀片绕着大致竖直的轴线转动的传统的旋 转式草坪修剪机需要在刀片周围设置防护结构, 以防止在操作过程中伤害到用 户或接近修剪机的其他人。 如图 1和 2所示, 现有的防护结构均为在修剪机机 壳 01的底部设置一个罩在刀片组件 02外的由若干连接条 I 03形成的栏栅式罩 体结构, 连接条 I 03在顶端通过连接条 II 04连接, 这种防护结构不可避免的问 题是: 1、 修剪机在工作时其阻力较大, 需要自动修剪机提供更大的动力; 2、 栏栅式罩体结构的防护范围有限, 操作者或儿童玩耍时胳膊、 手臂、 手指等极 易从机壳 01和地面之间的间隙伸入栏栅式罩体内被刀片割伤, 该栏栅式罩体结 构具有较大的安全隐患; 3、 采用栏栅式罩体结构, 由于连接条长度较长, 中间 悬空、 仅在两端固定, 割草时由于阻力较大或者罩体碰到地面时连接条容易断 裂; 4、 该栏栅式罩体结构为通过螺栓等紧固件安装在机壳 01 上, 费时费力, 人工成本大。
发明内容
本发明所要解决的技术问题在于提供一种割草机防护装置及割草机, 通过 在割草机机壳底面位于刀片组件的周围设置凸起的防护件, 改变了以往割草机 机壳底面和地面之间间隙较大的问题, 可防止手指靠近刀片, 同时割草机进行 割草时筋条对草具有疏导作用, 可大为减小驱动阻力。 为解决上述现有的技术问题, 本发明采用如下方案: 割草机防护装置, 所 述割草机具有机壳和刀片组件, 所述刀片组件露出至机壳的底面下方, 所述割 草机防护装置包括凸起在机壳底面的若干防护件, 所述防护件围在刀片组件的 周围, 相连两个防护件之间有间距。
作为优选, 所述防护件和机壳为一体成型的一体结构。 采用一体结构成型 制造容易, 无需安装, 强度好, 不易损坏。
作为优选, 所述防护件为长片状筋条, 所述筋条的延伸方向与割草机工作 时的行进方向一致。 通过在割草机机壳底面设置位于刀片组件的周围设置长条 状筋条, 将长条状筋条的延伸方向设置成与割草机的行进方向一致, 改变了以 往割草机机壳底面和地面之间间隙较大、 操作者或者小孩的手臂手指等身体部 位容易从割草机机壳底面和地面之间的间隙伸入触碰到刀盘组件的问题; 由于 长条状筋条的延伸方向设置成与割草机的行进方向一致, 进行割草时, 割草机 在经过待割的草时, 筋条对草具有疏导作用而不会将草压住; 刀盘组件的下方 无需设置防护, 无需再用完全罩住刀片组件的防护装置, 可大为减小割草机驱 动阻力。
作为优选, 在筋条从远离刀片组件的一端向刀片组件延伸的方向上, 所述 筋条远离刀片组件的一端的底面 I到机壳底面的距离逐渐增大。 筋条在远离刀 片组件的一端形成楔形尖端, 割草机在割草时, 该端迎着被割的草, 有助于进 一歩减小阻力, 更容易对草进行疏导。
作为优选, 所述底面 I为弧面, 采用弧面的流线型设计疏导效果更好。 作为优选, 所述机壳上安装有露出至机壳的底面下方的刀盘架, 所述刀片 组件包括安装在刀盘架上的刀盘和安装在刀盘上的刀片, 所述割草机防护装置 还包括设置在刀盘架底部的若干防护柱, 所述防护柱围在刀盘周围。 刀盘架上 的防护柱对刀盘和刀片具有保护作用。
作为优选, 所述防护柱与刀盘架为一体成型的一体结构。
作为优选, 所述刀盘架具有与防护柱的侧部连接的加强连接片。 割草时, 防护柱不会轻易折断。
作为优选, 所述防护件为设置在机壳底面的若干防护柱。 将防护件设置呈 防护柱, 也可起到阻挡手臂或手指伸入的作用。
作为优选, 所述防护柱成排设置, 每排防护柱的延伸方向与割草机工作时 的行进方向一致。
同时, 本发明还提供了一种割草机, 所述割草机具有上述所述的割草机防 护装置。 当割草机在工作状态下或底面朝向放置在底面上时, 防护件的底面到 地面的最大距离应当在 38.5mm 以内, 相邻两个防护件的最大距离应当控制在 38.5mm以内, 以刀片组件在割草机工作时的行进方向上的两侧为前后两侧、 另 外两侧为左右两侧, 处在刀片组件的左右两侧的防护件的底面最好低于刀片组 件的高度, 处在刀片组件前后两侧的防护件中, 至少有部分防护件的分布范围 应当在距离刀片组件 80mm的范围外。
有益效果:
本发明采用上述技术方案提供的割草机防护装置及割草机, 通过在割草机 机壳底面位于刀片组件的周围设置若干防护件, 改变了以往割草机机壳底面和 地面之间间隙较大的问题, 同时割草机进行割草时筋条对草具有疏导作用, 可 大为减小驱动阻力。
附图说明
图 1为现有的带有防护结构的割草机;
图 2为现有的割草机的防护结构的局部结构示意图; 图 3为本发明实施例一的结构示意图;
图 4为本发明刀片组件的结构示意图;
图 5为本发明实施例二中割草机的局部结构示意图;
图 6为本发明实施例三中部分筋条替换成防护柱的结构示意图;
图 7为本发明实施例三中全部筋条替换成防护柱的结构示意图。
具体实施方式
实施例一:
如图 3和 4所示为割草机防护装置的一种实施例, 其中割草机具有机壳 1 和安装在机壳 1上并露出至机壳 1底面的刀盘架 21,刀盘架 21的下方设有刀盘 22, 刀盘 22的边缘安装有三个均匀布置的刀片 23, 刀盘架 21上安装有驱动电 机, 驱动电机的输出端与刀盘 22连接并驱动刀盘转动, 割草机防护装置包括设 置在机壳 1底面的若干长薄片状筋条 3和设置在刀盘架 21底面的若干防护柱 4; 筋条 3 的长度方向与机壳 1底面的延伸方向一致、 宽度方向大致垂直于机壳 1 的底面, 筋条 3围在刀盘架 21的周围, 防护柱 4围在刀盘 22周围, 筋条 3的 延伸方向与割草机的行进方向一致, 相邻两个筋条 3 之间有间距, 相邻两个防 护柱 4之间有间距。 筋条 3和机壳 1为一体成型的一体结构, 防护柱 4与刀盘 架 21为一体成型的一体结构。筋条 3的底面具有底面 1 31和底面 1132, 底面 I 31远离刀盘架 21和刀盘 22、 底面 Π 32靠近刀盘架 21和刀盘 22, 底面 I 31为 弧面, 底面 I 31远离刀盘架 21和刀盘 22的一端与机壳 1底面直接连接、 靠近 刀盘架 21和刀盘 22的一端与底面 Π 32连接, 底面 1 31与底面 1132、 底面 I 31 与筋条的两侧面平滑过渡; 底面 I 31到机壳 1底面的距离自与机壳 1底面连接 的一端向与筋条的底面 Π 32连接的一端从零逐渐增大形成一个弧形面, 割草机 工作时有助于减小筋条该端的阻力。 刀盘架 21具有与防护柱 4的侧部连接的加 强连接片 211, 加强连接片 211对防护柱 4具有加强固定作用。
实施例二:
如图 3至 5所示为割草机的一种实施例, 该割草机具有机壳 1和安装于机 壳 1并露出至机壳 1底面下方的刀盘架 21, 机壳 1的底面具有圆凹槽 11, 圆凹 槽 11的中心具有孔 12, 刀盘架 21的顶部具有圆筒 212, 刀盘架 21设置在圆凹 槽 11中, 圆筒 212伸入孔 12中与机壳 1滑动配合, 圆筒 212的外壁上设置有 滑块 213, 孔 12的内壁上设置有与滑块 213滑动配合的滑槽 121, 这样刀盘架 21可相对机壳 1上下滑动, 圆筒 212内安装有电机, 电机的输出端安装有刀盘 22, 刀盘 22的边缘安装有三个均匀分布的刀片 23, 刀盘 22和刀片 23均位于刀 盘架 21的下方, 刀盘 22由驱动电机驱动转动进行割草, 刀盘架 21上下调整高 度时, 刀盘 22和刀片 23也上下移动可调整割草高度。 机壳 1的底面前方两侧 设有两个万向轮 5、 后方两侧设有两个带齿的有动力机构驱动的轮子 6。 该割草 机上具有割草机防护装置, 该割草机防护装置包括设置在机壳 1 底面的若干长 片状筋条 3和设置在刀盘架 21底面的若干防护柱 4; 筋条 3的长度方向与割草 机割草时的行进方向大致一致、 宽度方向大致垂直于机壳 1 的底面, 筋条 3围 在刀片组件的周围, 防护柱 4围在刀盘 22周围, 筋条 3的延伸方向与割草机的 行进方向一致, 相邻两个筋条 3之间有间距。 筋条 3和机壳 1为一体成型的一 体结构。 筋条 3的底面由底面 I 31和底面 Π 32组成, 底面 I 31远离刀盘架 21 和刀盘 22, 底面 Π 32靠近刀盘架 21和刀盘 22, 底面 I 31为弧面, 底面 I 31远 离刀盘架 21的一端与机壳 1底面直接连接、 靠近刀盘架 21的一端与底面 II 32 连接, 底面 I 31与底面 1132、 底面 I 31与筋条的两侧面平滑过渡, 底面 I 31到 机壳 1底面的距离自与机壳 1底面连接的一端向与筋条的底面 II 32连接的一端 从零逐渐增大。 防护柱 4与刀盘架 21为一体成型的一体结构。 刀盘架 21具有 与防护柱 4的侧部连接的加强连接片 211,加强连接片 211对防护柱 4具有加强 固定作用。
实施例三:
与实施例一的不同之处在于在于, 将机壳 1底面的部分 或全部筋条 3用若干成排设置的防护柱 4代替, 每排防护柱 4的排布方向与割 草机工作时的行进方向一致, 相邻两排防护柱 4之间有一定间距。
实施例四:
割草机, 该割草机具有机壳 1和刀片组件, 刀片组件露出在机壳 1 的底面 下方, 该割草机的割草机防护装置采用实施例三所述的割草机防护装置。

Claims

权 利 要 求 书
1. 割草机防护装置, 所述割草机具有机壳(1)和刀片组件, 所述刀片组件露出 在机壳 (1) 的底面下方, 其特征在于: 所述割草机防护装置包括凸起在机壳
(1)底面的若干防护件, 所述防护件围在刀片组件的周围, 相连两个防护件 之间有间距。
2. 根据权利要求 1所述的割草机防护装置,其特征在于:所述防护件和机壳(1) 为一体成型的一体结构。
3. 根据权利要求 1或 2所述的割草机防护装置, 其特征在于: 所述防护件为长 片状筋条 (3), 所述筋条 (3) 的延伸方向与割草机工作时的行进方向一致。
4. 根据权利要求 3所述的割草机防护装置, 其特征在于: 在筋条 (3)从远离刀 片组件的一端向刀片组件所在位置延伸的方向上, 所述筋条(3)远离刀片组 件的一端处的底面 I (31) 到机壳 (1) 底面的距离逐渐增大。
5. 根据权利要求 1或 2所述的割草机防护装置, 其特征在于: 所述机壳 (1)上 安装有露出至机壳 (1) 底面下方的刀盘架 (21), 所述刀片组件包括安装在 刀盘架 (21) 上位于刀盘架 (21) 下方的刀盘 (22) 和安装在刀盘 (22) 上 的刀片(23), 所述割草机防护装置还包括设置在刀盘架(21)底部的若干防 护柱 (4), 所述刀盘 (22) 和刀片 (23) 围在防护柱 (4) 中间。
6. 根据权利要求 5所述的割草机防护装置, 其特征在于: 所述防护柱(4)与刀 盘架 (21) 为一体成型的一体结构。
7. 根据权利要求 5所述的割草机防护装置, 其特征在于: 所述刀盘架 (21) 具 有与防护柱 (4) 的侧部连接的加强连接片 (211)。
8. 根据权利要求 1或 2所述的割草机防护装置, 其特征在于: 所述防护件为设 置在机壳 (1) 底面的若干防护柱 (4)。
9. 根据权利要求 8所述的割草机防护装置, 其特征在于: 所述防护柱(4)成排 设置, 每排防护柱 (4) 的延伸方向与割草机工作时的行进方向
割草机, 其特征在于: 所述割草机具有如权利要求 1至 9任一所述的割草机 防护装置。
PCT/CN2014/082806 2014-06-06 2014-07-23 割草机防护装置及割草机 WO2015184674A1 (zh)

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