WO2008116422A1 - Nouveau dispositif à couper l'herbe - Google Patents

Nouveau dispositif à couper l'herbe Download PDF

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Publication number
WO2008116422A1
WO2008116422A1 PCT/CN2008/070599 CN2008070599W WO2008116422A1 WO 2008116422 A1 WO2008116422 A1 WO 2008116422A1 CN 2008070599 W CN2008070599 W CN 2008070599W WO 2008116422 A1 WO2008116422 A1 WO 2008116422A1
Authority
WO
WIPO (PCT)
Prior art keywords
cutter
blade
hole
cutter head
plate
Prior art date
Application number
PCT/CN2008/070599
Other languages
English (en)
French (fr)
Inventor
Jinshan Chen
Original Assignee
Fujian Jinjiang Sanli Engine Co., Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujian Jinjiang Sanli Engine Co., Ltd filed Critical Fujian Jinjiang Sanli Engine Co., Ltd
Publication of WO2008116422A1 publication Critical patent/WO2008116422A1/zh

Links

Classifications

    • 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
    • A01D34/733—Cutting-blade mounting means
    • 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
    • A01D34/736—Flail type

Definitions

  • the present invention relates to a novel lawn mower.
  • the known mowing type lawn mower generally comprises a cutter head, a blade, a knife seat, a connecting bolt and a fastening nut, wherein the cutter head is fixed under the knife seat, and the blade is arranged on the cutter head.
  • the blade and the cutter head are locked by a connecting bolt and a fastening nut, and the output end of the knife seat connected to the engine is used to drive the blade to perform the mowing action.
  • the nut must be tightened or loosened by using the plate screwing tool, and the tool change speed is slow, which affects the mowing efficiency.
  • the object of the present invention is to provide a new type of lawn mower that is convenient and quick to change the knife.
  • a new type of lawn mower including a knife holder, a cutter head, and a blade
  • a blade press plate and a corresponding number of blade inserts wherein the cutter disc is provided with at least one pair of symmetrically distributed openings, wherein the middle portion of the insert press plate is located below the cutter disc through the opening, and the two ends of the insert pressure plate are located on the cutter disc
  • a fixing device fastens the blade pressing plate and the cutter head under the knife seat
  • the cutter disk is provided with a deformation hole corresponding to the number of the openings, and the deformation holes are respectively located in the radial extension of the cutter disk where the openings are respectively located
  • the deformation hole aperture is gradually reduced along a direction in which the radius of the cutter head increases
  • the blade is provided with a fixing hole
  • each of the cutter pin pins is provided with an insert groove and a deformation hole whose shaft diameters respectively match the fixing holes a cutter hole corresponding to the hole at the outer edge of the cutter disc, a through hole is formed at both ends of the blade press plate, and one end of each cutter pin passes through the blade fixing hole, the cutter disc
  • the fixing device is a bolt.
  • the beneficial effect of the invention is that by providing a deformation hole on the cutter head, the centrifugal force of the blade during the rotation is utilized, so that the cutter groove on the cutter pin is tightly clamped on the outside of the deformation hole during the mowing process.
  • the small arc portion prevents the blade from falling off, and the same through the through hole at both ends of the blade press plate prevents the mower from being in the non-operating state blade Loose, it is quicker and easier to change the knife with this kind of structure.
  • Figure 1 is a bottom view of the embodiment
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
  • FIG. 3 is a plan view of the cutter head of the embodiment
  • Figure 4 is a cross-sectional view taken along line B-B of Figure 3;
  • FIG. 5 is a plan view of the blade presser of the embodiment
  • Figure 6 is a cross-sectional view taken along line C-C of Figure 5;
  • Figure 7 is a front elevational view of the cutter pin of the embodiment.
  • an embodiment discloses a novel rotary mower comprising a holder 1, a cutter head 2, four blades 3, two blade press plates 4, and four cutter pin 5 , fixing bolt 6, engine output shaft 7, key 8.
  • the seat 1 is fixed to the lower end of the engine output shaft 7 by a key 8.
  • the cutter head 2 is a disc-shaped structure, and eight curved ribs 21 are symmetrically disposed on the side thereof.
  • the cutter head 2 on FIG. 3 is defined with a horizontal center line of an X-axis and a vertical center line of a Y-axis.
  • the eight curved ribs 21 are respectively located on the center line of the angle between the X axis and the Y axis, and the square opening 22 and the deformation hole 23 are symmetrically arranged on the positive and negative half axes of the X axis and the Y axis, respectively, and the square openings 22 and
  • the distance between the center of the cutter head 2 is smaller than the distance between the deformation hole 23 and the center of the cutter head 2, and the deformation hole 23 is composed of a large arc, a small arc, and two line segments connecting a small arc and a large arc, the line segment
  • the connection with the small arc is a tangential connection, and the small arc is located on the outer edge of the cutter head 2 with respect to the large arc.
  • the blade pressing plate 4 is an elongated structure, and the blade pressing plate 4 is provided with through holes 41 at both ends thereof.
  • the cutter pin 5 is similar to a variable diameter shaft, and includes an integrally formed pressing cap 51 and a blade from bottom to top.
  • the groove 52, the cutter groove 53 and the end shaft 54 are four parts, wherein the diameter of the portion of the pressure cap 51 is larger than the shaft diameter of the insert groove 52, and the shaft diameter of the cutter groove 53 is matched with the small circular arc diameter of the deformation hole 23, the end
  • the shaft diameter of the shaft 54 is adapted to the diameter of the through hole 41 of the blade presser 4.
  • the cutter head 2 is disposed under the knife seat 1, and one end of the two blade press plates 4 respectively passes through one of the openings on the X-axis and the Y-axis from the upper portion of the cutter head 2, and then respectively passes through the corresponding other opening.
  • the fixing bolts 6 are sequentially passed through the two blade pressing plates 4 and the cutter head 2 to fasten the cutter head 2 below the holder 1.
  • the end shaft 54 of the cutter pin 5 sequentially passes through the fixing hole 31 on the blade 3, the large arc portion of the deformation hole 23 on the cutter head 2, and the blade
  • the through hole 41 in the pressure plate 4 is attached to the small arc portion of the deformation hole 23 of the cutter head 2 by the cutter groove 53, thereby fastening the blade 3 below the cutter head 2.

Landscapes

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

Description

说明书 一种新型割草机
技术领域
[1] 本发明涉及一种新型割草机。
背景技术
[2] 公知的旋刀式割草机其割草部分一般包括刀盘、 刀片、 刀座、 连接螺栓、 紧固 螺母组成， 其中刀盘固设于刀座下方， 刀片设于刀盘上， 刀片与刀盘之间通过 连接螺栓与紧固螺母锁紧， 刀座连接发动机的输出端用于带动刀片执行割草动 作。 这样在更换刀片吋必须使用板拧工具把螺母拧紧或者松开， 换刀速度慢， 影响割草效率。
发明内容
[3] 本发明的目的是提供一种换刀方便、 快捷的新型割草机。
[4] 本发明所釆用的技术方案是这样的： 一种新型割草机， 包括刀座、 刀盘、 刀片
、 刀片压板及对应刀片数量的刀盘销， 刀盘上设有至少一对呈对称分布的开口 ， 所述刀片压板中间部分穿过所述开口位于刀盘下方， 刀片压板的两端位于刀 盘上方， 一固定装置把刀片压板、 刀盘紧固于刀座下方， 所述刀盘上设有对应 所述开口对数的变形孔， 各变形孔分别位于各开口所在的刀盘径向延长线上， 且所述变形孔孔径沿刀盘半径增加的方向逐步减小， 所述刀片上设有固定孔， 所述各刀盘销设有轴径分别与固定孔相适配的刀片槽及与变形孔靠近刀盘外侧 沿处的孔径相适配的刀盘槽， 所述刀片压板的两端开设有通孔， 所述各刀盘销 的一端依次穿过刀片固定孔、 刀盘变形孔、 通孔并籍由刀盘槽卡设于变形孔上 把刀片固设于刀盘下方。
[5] 上述新型割草机， 所述刀盘上的变形孔共有四个。
[6] 上述新型割草机， 所述固定装置是螺栓。
[7] 本发明的有益效果是通过在刀盘上设置变形孔， 利用刀片在旋转过程中的离心 力作用， 使得刀盘销上的刀盘槽在割草过程中紧紧卡设于变形孔外侧小圆弧部 分防止刀片脱落， 同吋通过刀片压板两端的通孔防止割草机在非运行状态刀片 松脱， 使用该种结构的割草机换刀更快捷方便。
附图说明
[8] 图 1为实施例仰视图；
[9] 图 2为图 1的 A-A剖视图；
[10] 图 3为实施例的刀盘俯视图；
[11] 图 4为图 3的 B-B剖视图；
[12] 图 5为实施例的刀片压板俯视图；
[13] 图 6为图 5的 C-C剖视图；
[14] 图 7为实施例的刀盘销正视图。
具体实施方式
[15] 下面结合附图列举一实施例对本发明作详细说明。
[16] 参考图 1至图 7， 实施例公开一种新型旋刀式割草机， 其包括刀座 1、 刀盘 2、 四 个刀片 3、 两个刀片压板 4、 四个刀盘销 5、 固定螺栓 6、 发动机输出轴 7、 键 8。 其中， 刀座 1通过键 8固设于发动机输出轴 7下端。 所述刀盘 2为一圆盘形结构， 其侧面对称设有八条弧形加强筋 21， 定义图 3上的刀盘 2其水平中心线为 X轴、 其 垂直中心线为 Y轴， 所述八条弧形加强筋 21分别位于 X轴与 Y轴夹角的中心线上 ， 在 X轴及 Y轴的正负半轴分别对称设有方形开口 22及变形孔 23， 所述各方形开 口 22与刀盘 2中心的距离小于变形孔 23与刀盘 2中心的距离， 所述变形孔 23是由 大圆弧、 小圆弧及两条连接小圆弧与大圆弧的线段组成， 所述线段与小圆弧连 接方式为切线连接， 所述小圆弧相对于大圆弧位于刀盘 2的外侧沿。 所述刀片压 板 4为一长条形结构， 刀片压板 4的两端设有通孔 41， 所述刀盘销 5类似一变径轴 ， 其自下往上包括一体成形的压帽 51、 刀片槽 52、 刀盘槽 53、 端轴 54四部分， 其中， 压帽 51部分的直径大于刀片槽 52的轴径， 刀盘槽 53的轴径与变形孔 23小 圆弧直径相适配， 端轴 54的轴径与刀片压板 4的通孔 41直径相适配。 安装的吋候 ， 刀盘 2设于刀座 1下方， 两个刀片压板 4的一端分别从刀盘 2上部穿过 X轴及 Y轴 上的其中一个开口， 然后分别从对应的另一开口穿出返回到刀盘 2的上表面， 固 定螺栓 6依次穿过两刀片压板 4及刀盘 2把刀盘 2紧固于刀座 1的下方。 所述刀盘销 5的端轴 54依次穿过刀片 3上的固定孔 31、 刀盘 2上的变形孔 23大圆弧部分、 刀片 压板 4上的通孔 41， 并籍由刀盘槽 53卡设于刀盘 2的变形孔 23的小圆弧部分从而 把刀片 3紧固于刀盘 2下方。 该种结构的旋刀式割草机在运行的吋候， 刀片 3在旋 转过程中产生的离心力保证刀盘槽 53紧紧卡设于小圆弧部分， 当需要更换刀片 3 吋， 只要把刀片压板 4的两端向上移动使得通孔 41脱离端轴 54， 把刀盘销 5向刀 盘 2的中心推动使得刀盘槽 53位于变形孔 23的大圆弧处从而可以向下移动并最终 脱离刀盘 2， 此吋即可把刀片 3从刀片槽 52上取下， 换上新的或者研磨过的刀片 ， 按前述相反的顺序装好刀片 3后即可重新进行割草， 整个换刀过程不需要额外 的工具， 既简单又方便。

Claims

权利要求书
[1] 1、 一种新型割草机， 包括刀座、 刀盘、 刀片， 其特征在于： 还包括刀片压 板及对应刀片数量的刀盘销， 刀盘上设有至少一对呈对称分布的开口， 所 述刀片压板中间部分穿过所述开口位于刀盘下方， 刀片压板的两端位于刀 盘上方， 一固定装置把刀片压板、 刀盘紧固于刀座下方， 所述刀盘上设有 对应所述开口对数的变形孔， 各变形孔分别位于各开口所在的刀盘径向延 长线上， 且所述变形孔孔径沿刀盘半径增加的方向逐步减小， 所述刀片上 设有固定孔， 所述各刀盘销设有轴径分别与固定孔相适配的刀片槽及与变 形孔靠近刀盘外侧沿处的孔径相适配的刀盘槽， 所述刀片压板的两端开设 有通孔， 所述各刀盘销的一端依次穿过刀片固定孔、 刀盘变形孔、 通孔并 籍由刀盘槽卡设于变形孔上把刀片固设于刀盘下方。
[2] 2、 根据权利要求 1所述的新型割草机， 其特征在于： 所述刀盘上的变形孔 共有四个。
[3] 3、 根据权利要求 1或 2所述的新型割草机， 其特征在于： 所述固定装置是螺 栓。
PCT/CN2008/070599 2007-03-27 2008-03-27 Nouveau dispositif à couper l'herbe WO2008116422A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNU2007200066907U CN201015290Y (zh) 2007-03-27 2007-03-27 一种新型割草机
CN200720006690.7 2007-03-27

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3075221A1 (en) * 2015-03-27 2016-10-05 Honda Motor Co., Ltd. Lawn mower with blade disc
WO2017223568A1 (en) * 2016-06-24 2017-12-28 Mtd Products Inc High-efficiency cutting system
USD822068S1 (en) 2016-08-23 2018-07-03 Mtd Products Inc Blade
CN113661824A (zh) * 2020-05-15 2021-11-19 苏州金莱克精密机械有限公司 一种方便快速更换功能头的割灌打草机

Families Citing this family (10)

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CN201015290Y (zh) * 2007-03-27 2008-02-06 福建省晋江市三力机车有限公司 一种新型割草机
CN101904244B (zh) * 2010-07-09 2013-03-27 宁波大叶园林设备有限公司 无刀座的草坪割草机用割草刀
CN104067767B (zh) 2011-09-29 2018-05-11 胡斯华纳有限公司 草坪护理装置、刀片底座以及切割刀片
CN103444350A (zh) * 2012-05-31 2013-12-18 苏州萃智新技术开发有限公司 一种旋转式割草机
US8931248B2 (en) * 2012-06-12 2015-01-13 Mtd Products Inc Replaceable mower blade assembly
EP2955992B1 (en) * 2013-02-14 2017-08-02 MTD Products Inc. Replaceable mower blade and assembly
CN104170578A (zh) * 2014-08-11 2014-12-03 徐月苗 具有自毁刀座的割草机
CN106612882A (zh) * 2016-12-28 2017-05-10 兴化市台林机械有限公司 一种应用于割草机割草刀的刀盘
CN107548663B (zh) * 2017-09-11 2020-12-15 河北农业大学 一种山地果园割草机割刀的避障装置及其避障方法
CN112166860A (zh) * 2020-09-25 2021-01-05 东北林业大学 一种林业割灌用类行星型齿刀

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CN2271237Y (zh) * 1996-01-17 1997-12-31 格雷电动工具(苏州)有限公司 打草机的切削刀具
US6357215B1 (en) * 1997-06-16 2002-03-19 Peter Thorne Vegetation cutting tool and blade
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3075221A1 (en) * 2015-03-27 2016-10-05 Honda Motor Co., Ltd. Lawn mower with blade disc
US9801338B2 (en) 2015-03-27 2017-10-31 Honda Motor Co., Ltd. Lawn mower
WO2017223568A1 (en) * 2016-06-24 2017-12-28 Mtd Products Inc High-efficiency cutting system
US10212880B2 (en) 2016-06-24 2019-02-26 Mtd Products Inc High-efficiency cutting system
EP3597024A1 (en) * 2016-06-24 2020-01-22 MTD Products Inc High-efficiency cutting system
US10542670B2 (en) 2016-06-24 2020-01-28 Mtd Products Inc High-efficiency cutting system
USD822068S1 (en) 2016-08-23 2018-07-03 Mtd Products Inc Blade
CN113661824A (zh) * 2020-05-15 2021-11-19 苏州金莱克精密机械有限公司 一种方便快速更换功能头的割灌打草机

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