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WO2007019726A1 - Systeme de reglage en hauteur de tondeuse a gazon - Google Patents

Systeme de reglage en hauteur de tondeuse a gazon Download PDF

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Publication number
WO2007019726A1
WO2007019726A1 PCT/CN2005/001261 CN2005001261W WO2007019726A1 WO 2007019726 A1 WO2007019726 A1 WO 2007019726A1 CN 2005001261 W CN2005001261 W CN 2005001261W WO 2007019726 A1 WO2007019726 A1 WO 2007019726A1
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WIPO (PCT)
Prior art keywords
height adjustment
lawn mower
height adjusting
adjusting device
handle
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Application number
PCT/CN2005/001261
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English (en)
French (fr)
Inventor
Jinshan Chen
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Individual
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Priority to PCT/CN2005/001261 priority Critical patent/WO2007019726A1/zh
Publication of WO2007019726A1 publication Critical patent/WO2007019726A1/zh
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Ceased legal-status Critical Current

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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
    • A01D34/74—Cutting-height adjustment

Definitions

  • the present invention relates to a lawn mower, and more particularly to a lawn mower height adjusting device.
  • BACKGROUND OF THE INVENTION The mowing height of a lawn mower is determined by the distance of the lawn cutter from the ground. Since the whole machine casing and the lawn mower of the lawn mower are mounted on the front and rear axles, the early lawn mower is replaced. The position of the front and rear wheels of different diameters or the adjustment of the axle to obtain the grass mowing height of different sizes is obviously troublesome.
  • the mower height adjustment of the lawn mower generally adopts a four-bar mechanism integrated height adjustment device, that is, the swing arm of the front wheel, the swing arm of the rear wheel, and the connecting rod and the frame connecting the front and rear wheel swing arms constitute a four-bar mechanism.
  • the adjustment handle is mounted on one side of the rear wheel axle and integral with the rear wheel swing arm, and the connecting rod connecting the front and rear wheel swing arms is exposed outside the casing of the whole machine.
  • the adjustment handle mounted on the side of the rear wheel axle is rotated, and the front and rear wheels are integrally adjusted under the action of the four-bar mechanism.
  • An adjustment ⁇ is connected to adjust the relative height of the lawn mower. Since the position of the mower's axle is 4 ⁇ low, each time you need to obtain different mowing height, the operator must squat to turn the adjustment handle. It can't be adjusted at any time according to the actual situation. The operation is very inconvenient. At the same time, because the front and rear wheels are connected. The connecting rod of the swing arm is exposed outside the casing of the whole machine, causing positional interference to the installation of the engine and the cover member.
  • a mower height adjusting device for a lawn mower comprising a front wheel support shaft system that can swing around the front wheel axle, a rear wheel support shaft system that can swing around the rear wheel axle, and a high handle
  • the system, the heightening handle system is connected to the transmission system between the front wheel axle system and the rear wheel axle system.
  • the lawn mower height adjusting device is connected to the main shaft system between the front wheel support shaft system and the rear axle support system, wherein the transmission system is connected with the height adjustment handle system at one end and the main rod at the other end. system.
  • the lawn mower height adjusting device is configured, and the main rod system comprises a main connecting rod and a front connecting rod and a rear connecting rod hinged at two ends of the main connecting rod.
  • the lawn mower height adjusting device is further provided, wherein the main rod system further comprises a balance spring and a spring support, the balance spring is sleeved on the main link and one end is fixed to the main link, and the balance spring is The other end is fixed to the spring support, and the spring support is fixed on the lawn mower body.
  • the lawn mower height adjustment device comprises a positioning pin, an adjustment handle rotatable about the positioning pin, and a handle fixing device for fixing the height adjustment handle.
  • the lawn mower height adjusting device comprises a ratchet wheel, a ratchet positioning pin and a pressing spring
  • the height adjusting handle further has a shifting gear that is rotatable around the positioning pin, the adjusting gear
  • the high handle and the shifting gear are hinged to the handrail of the mower through the positioning pin, and the ratchet wheel is connected to the handrail of the mower by the i ⁇ i wheel positioning pin, the one end of the pressing spring is fixedly connected with the ratchet, and the other end is fixedly connected with the handrail of the mower.
  • the lawn mower mowing height adjusting device comprises an upper link and an intermediate rocker arm hinged to the upper link.
  • the lawn mower mowing height adjustment device is provided, and the transmission system includes an upper link and an intermediate rocker arm hinged to the upper link.
  • the lawn mower height adjusting device is provided, and the other end of the intermediate rocker arm is provided with a sliding groove, and one end of the main link is connected to a composite hinge which is slidable in the sliding groove.
  • the mowing mower height adjusting device changes the basic principle of the conventional universal four-bar mechanism to realize the integrated height adjustment, and realizes the grass mower height adjustment by using the built-in multi-rod integrated height adjusting mechanism.
  • the main rod system of the multi-rod integrated height adjustment mechanism is built in the inside of the whole machine casing, and the height adjustment handle system is placed on the upper end of the mower push rod armrest. Since the height adjustment handle is placed at the upper end of the mower pusher armrest, the operator can adjust the mowing height at any time according to the lawn trimming effect, and the operation is very convenient.
  • the height adjustment handle system is arranged on the handrail, and the engine and the cover member are not given. The installation causes positional interference, the structure is reasonable, and the maintenance is convenient, which makes the mower beautiful and elegant.
  • FIG. 1 is a front view of the present invention
  • FIG. 2 is a plan view of the present invention. detailed description
  • the mower includes a power system, a walking system, and a complete machine.
  • Shell system mowing height adjustment device and so on.
  • the mowing height adjustment device mainly includes a front wheel support shaft system, a rear wheel support shaft system, a main rod system, a transmission system, and a height adjustment handle system.
  • the front wheel axle system is coupled to the complete machine casing 12 via a front wheel rocker arm fixed hinge 29, which includes a front wheel rocker arm 28 and a front wheel eccentric rod 30, etc.;
  • the rear wheel fulcrum system is fixed to the hinge by the rear wheel rocker arm 16 It is connected to the whole casing 12, and includes a rear wheel rocker arm 15 and a rear wheel eccentric rod 19, etc.;
  • the main rod system includes a main link 22, a balance spring 23, a spring support 24, etc., and the main rod system passes through the spring support 24 is fixedly connected with the whole casing 12;
  • the transmission system includes an upper connecting rod 9, an upper connecting rod hinge 10, an intermediate rocker arm 11 and the like, which is hinged to the whole casing 12 through the intermediate rocker arm fixing hinge 13;
  • the utility model comprises a ratchet wheel 3, a ratchet positioning pin 2, a pressing spring 4, a shifting gear 5, a positioning pin 6, a height adjusting handle 7, an adjusting handle 7 and a shifting gear 5 which are hinged to
  • the ratchet wheel 3 is hinged with the whole machine push rod armrest 1 through the ratchet positioning pin 2, one end of the pressing spring 4 is fixedly connected with the ratchet wheel 3, and the other end is fixedly connected with the whole machine push rod armrest 1.
  • Both ends of the front connecting rod 26 are respectively hinged with the front wheel supporting shaft system and the main rod system through hinges; the two ends of the rear connecting rod 18 are respectively hinged with the rear wheel supporting shaft system and the main rod system; the intermediate rod system passes through the intermediate rocker arm 11
  • the upper sliding groove is connected with the composite hinge 14; the height adjustment handle system and the intermediate rod system are hinged by the upper link hinge 10 through the height adjustment handle 7 and the upper link 9.

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

Description

割草机割草高度调节装置 技术领域 本实用新型涉及一种割草机， 尤其涉及割草机割草高度调节装 置。 背景技术 割草机的割草高度是靠割草刀的离地距离来决定的， 由于割草机 的整机机壳和割草刀安装在前后轮轴上，所以早期的割草机是靠更换 直径大小不同的前后轮或调节轮轴的位置来获得不同大小的割草高 度， 显然这种调节方法艮麻烦。 目前， 割草机割草高度的调节普遍釆 用四杆机构一体调高装置， 即前轮的摆臂、 后轮的摆臂、 连接前后轮 摆臂的连杆与机架构成四杆机构。调节手柄装于后轮轮轴一侧并与后 轮摆臂成一整体， 连接前后轮摆臂的连杆显露于整机机壳外部。 当需 要调节割草高度时， 转动装于后轮轮轴一侧的调节手柄， 此时前后轮 在四杆机构的作用下实现一体调高。 2004 年 10 月 20 日公告的 CN2648790Y公开的一种割草机割草高度调节装置， 该装置即在轮轴 与支轴之间各连接一摆杆， 机体安装于前后支轴上， 在摆杆上连接着 一调节杵用于调节割草刀的相对高度。 由于割草机的轮轴位置 4艮低， 每次需要获得不同的割草高度， 操作者都必须下蹲才能转动调节手 柄， 不能根据实际情况进行随时调整， 操作十分不方便； 同时由于连 接前后轮摆臂的连杆显露于整机机壳外部， 对发动机、 外罩件的安装 造成位置干涉。 发明内容 本实用新型的目的在于提供一种在割草机扶手上即可实现割草 高度调整、 操作方便、 结构合理的新型割草机割草高度调节装置。
本实用新型的技术方案是这样的： 一种割草机割草高度调节装 置， 包括可绕前轮轴摆动的前轮支轴系统、可绕后轮轴摆动的后轮支 轴系统及调 '高手柄系统， 所迷的调高手柄系统与前轮支轴系统、后轮 支轴系统之间连接着传动系统。
优选上述割草机割草高度调节装置，所述的前轮支轴系统与后轴 支轴系统之间连接着主杵系统，所述的传动系统一端连接调高手柄系 统， 另一端连接主杆系统。 优选上述割草机割草高度调节装置 ,所述的主杆系统包括主连杆 及铰接于主连杆两端的前连杆及后连杆。
优选上述割草机割草高度调节装置，所述的主杆系统还包括平衡 弹簧及弹簧支座，所述平衡弹簧套设于主连杆上并且一端与主连杆固 定， 所述平衡弹簧的另一端固定于弹簧支座上， 并且所述弹簧支座固 设于割草机机体上。
优选上述割草机割草高度调节装置，所述的调高手柄系统包括定 位销、可绕定位销转动的调高手柄及用于固定调高手柄的手柄固定装 置。
优选上述割草机割草高度调节装置，所述的手柄固定装置包括棘 轮、 棘轮定位销、 压紧弹簧， 所述调高手柄还固设有可绕定位销转动 的换挡齿轮， 所述调高手柄和换挡齿轮通过定位销与割草机扶手铰 接， 棘轮通 i±i朿轮定位销与割草机扶手铰接， 压紧弹簧一端与棘轮固 定连接， 另一端与割草机扶手固定连接。
优选上述割草机割草高度调节装置，所述的传动系统包括上连杆 及与上连杆铰接的中间摇臂。
优选上述割草机割草高度调节装置，所述的传动系统包括上连杆 及与上连杵铰接的中间摇臂。
优选上述割草机割草高度调节装置，所述中间摇臂的另一端设有 滑动槽， 主连杆的一端连接可在所述滑动槽内滑动的复合铰链。
本实用新型提供的割草机割草高度调节装置改变了现有的普遍 采用四杆机构实现一体调高的基本原理，利用内置式多杆一体调高机 构实现割草机割草高度调节，将多杆一体调高机构的主杆系统内置于 整机机壳内部， 同时将调高手柄系统置于割草机推杆扶手上端。 由于 调高手柄置于割草机推杆扶手上端，操作者可以随时根据草坪修剪效 果随时调整割草高度，操作十分方便，同时调高手柄系统设于扶手上， 不会给发动机、 外罩件的安装造成位置干涉， 结构合理， 方便检修， 使得割草机整机美观大方。
下面结合附图和实施例对本实用新型作进一步描述： 附图说明 图 1为本实用新型的主视图；
图 2为本实用新型的俯视图。 具体实施方式
参考图 1、 图 2, 割草机整机包括动力系统、 行走系统、 整机机 壳系统、割草高度调节装置等几大部分。其中割草高度调节装置主要 包括前轮支轴系统、 后轮支轴系统、 主杆系统、 传动系统、 调高手柄 系统等。 前轮支轴系统通过前轮摇臂固定铰链 29连接在整机机壳 12 上， 它包括前轮摇臂 28和前轮偏心杆 30等； 后轮支轴系统通过后轮 摇臂 16固定铰链连接在整机机壳 12上， 它包括后轮摇臂 15和后轮 偏心杆 19等； 主杆系统包括主连杆 22、 平衡弹簧 23、 弹簧支座 24 等， 主杆系统通过弹簧支座 24与整机机壳 12固定连接； 传动系统包 括上连杆 9、 上连杆铰链 10、 中间摇臂 11等， 它通过中间摇臂固定 铰链 13与整机机壳 12铰接； 调高手柄系统包括棘轮 3、 棘轮定位销 2、 压紧弹簧 4、 换挡齿轮 5、 定位销 6、 调高手柄 7 , 调高手柄 7和 换挡齿轮 5通过定位销 6与整机推杆扶手 1铰接，棘轮 3通过棘轮定 位销 2与整机推杆扶手 1铰接， 压紧弹簧 4一端与棘轮 3固定连接， 另一端与整机推杆扶手 1固定连接。 前连杆 26两端通过铰链分别与 前轮支轴系统、 主杆系统铰接； 后连杆 18两端通过铰链分别与后轮 支轴系统、 主杆系统铰接； 中间杆系统通过中间摇臂 11上的滑动槽 与复合铰链 14连接； 调高手柄系统与中间杆系统通过调高手柄 7、 上连杆 9利用上连杆铰链 10铰接。
当需要调节割草高度时，先将卡入换挡齿轮 5齿槽内的棘轮 3拔 起， 然后逆时针转动调高手柄 7到适当位置，再将棘轮 3轮齿卡入换 挡齿轮 5齿槽内。换挡齿轮 5随着调高手柄 7转动相应的角度， 同时 上连杆 9在调高手柄 7和手柄铰链 8的驱动下上拉，从而带动中间摇 臂 11绕中间摇臂固定铰链 13顺时针转动相应角度。 中间摇臂 11绕 中间摇臂固定铰链 13顺时针转动时，一方面驱动后轮摇臂 15以及与 后轮摇臂 15刚接的后轮偏心杆 19绕后轮摇臂固定 4史链 16逆时针转 动； 另一方面通过后连杆 18和后连杆铰链 21驱动主连杆 22向左移 动， 进而通过前连杆铰链 25、 前连杆 26和前轮摇臂活动铰链 27驱 动前轮摇臂 28以及与前轮摇臂 28刚接的前轮偏心杆 30绕前轮摇臂 固定铰链 29逆时针转动。 使得前轮 32和后轮 17相对于整机机壳 12 下移， 达到割草机一体调高的目的。

Claims

权 利 要 求
1、 一种割草机割草高度调节装置， 包括可绕前轮轴摆动的前轮 支轴系统、可绕后轮轴摆动的后轮支轴系统及调高手柄系统， 其特征 在于： 所述的调高手柄系统与前轮支轴系统、后轮支轴系统之间连接 着传动系统。
2、如权利要求 1所述的割草机割草高度调节装置， 其特征在于： 所述的前轮支轴系统与后轴支轴系统之间连接着主杆系统，所述的传 动系统一端连接调高手柄系统， 另一端连接主杆系统。
3、如权利要求 2所述的割草机割草高度调节装置， 其特征在于： 所述的主杆系统包括主连杆及铰接于主连杆两端的前连杆及后连杆。
4、 如权利要求 3所述的割草机割草高度调节装置， 其特征在于： 所述的主杆系统还包括平衡弹簧及弹簧支座，所述平衡弹簧套设于主 连杆上并且一端与主连;^固定，所述平衡弹簧的另一端固定于弹簧支 座上， 并且所述弹簧支座固设于割草机机体上。
5、 如权利要求 1所述的割草机割草高度调节装置， 其特征在于 所述的调高手柄系统包括定位销、可绕定位销转动的调高手柄及用于 固定调高手柄的手柄固定装置。
6、如权利要求 5所述的割草机割草高度调节装置， 其特征在于： 所述的手柄固定装置包括棘轮、棘轮定位销、 压紧弹簧， 所述调高手 柄还固设有可绕定位销转动的换挡齿轮，所述调高手柄和换挡齿轮通 过定位销与割草机扶手铰接， 棘轮通过棘轮定位销与割草机扶手铰 接， 压紧弹簧一端与棘轮固定连接， 另一端与割草机扶手固定连接。
7、如权利要求 1所述的割草机割草高度调节装置， 其特征在于： 所述的传动系统包括上连杆及与上连杆铰接的中间摇臂。
8、如权利要求 2所述的割草机割草高度调节装置， 其特征在于： 所述的传动系统包括上连杆及与上连杆铰接的中间摇臂。
9、如权利要求 8所述的割草机割草高度调节装置， 其特征在于： 所述中间摇臂的另一端设有滑动槽，主连杆的一端连接可在所述滑动 槽内滑动的复合铰链。
PCT/CN2005/001261 2005-08-15 2005-08-15 Systeme de reglage en hauteur de tondeuse a gazon Ceased WO2007019726A1 (fr)

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CN102204449A (zh) * 2010-03-30 2011-10-05 本田技研工业株式会社 步行型割草机
KR101247806B1 (ko) 2010-03-30 2013-03-26 혼다 기켄 고교 가부시키가이샤 보행형 잔디 깎기 기계
CN104412767A (zh) * 2013-08-20 2015-03-18 宝时得机械（张家港）有限公司 割草机
EP2875710A1 (en) * 2013-11-21 2015-05-27 Robert Bosch Gmbh Lawnmower height-of-cut adjustment system
CN104904412A (zh) * 2015-06-10 2015-09-16 苏州苏农园艺景观有限公司 一种能使草坪平整的草坪机
CN108093814A (zh) * 2017-12-22 2018-06-01 洛阳理工学院 一种割草机
US10834869B2 (en) 2019-02-20 2020-11-17 Honda Motor Co., Ltd. Lift assembly for a lawnmower and lawnmower having same

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KR101247806B1 (ko) 2010-03-30 2013-03-26 혼다 기켄 고교 가부시키가이샤 보행형 잔디 깎기 기계
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