WO2013104191A1 - 一种带有自动离合器的割草机 - Google Patents

一种带有自动离合器的割草机 Download PDF

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Publication number
WO2013104191A1
WO2013104191A1 PCT/CN2012/080930 CN2012080930W WO2013104191A1 WO 2013104191 A1 WO2013104191 A1 WO 2013104191A1 CN 2012080930 W CN2012080930 W CN 2012080930W WO 2013104191 A1 WO2013104191 A1 WO 2013104191A1
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WIPO (PCT)
Prior art keywords
self
clutch
casing
propelled
pair
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PCT/CN2012/080930
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English (en)
French (fr)
Inventor
杨健
李晓飞
Original Assignee
Yang Jian
Li Xiaofei
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Publication date
Application filed by Yang Jian, Li Xiaofei filed Critical Yang Jian
Priority to US14/371,505 priority Critical patent/US20150245559A1/en
Publication of WO2013104191A1 publication Critical patent/WO2013104191A1/zh

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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
    • A01D34/67—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 hand-guided by a walking operator
    • A01D34/68—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 hand-guided by a walking operator with motor driven cutters or wheels
    • A01D34/6806—Driving mechanisms
    • A01D34/6812—Braking or clutching mechanisms
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/006—Control or measuring arrangements
    • 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
    • A01D34/64—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 mounted on a vehicle, e.g. a tractor, or drawn by an animal or a vehicle
    • 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
    • A01D34/67—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 hand-guided by a walking operator
    • A01D34/68—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 hand-guided by a walking operator with motor driven cutters or wheels
    • A01D34/69—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 hand-guided by a walking operator with motor driven cutters or wheels with motor driven wheels
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D69/00—Driving mechanisms or parts thereof for harvesters or mowers
    • A01D69/08—Clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D43/00—Automatic clutches
    • F16D43/02—Automatic clutches actuated entirely mechanically
    • F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
    • F16D43/14—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
    • F16D43/18—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members with friction clutching members
    • 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
    • A01D34/67—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 hand-guided by a walking operator
    • A01D34/68—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 hand-guided by a walking operator with motor driven cutters or wheels
    • A01D2034/6843—Control levers on the handle of the mower

Definitions

  • the invention relates to An electric lawn mower, in particular, relates to an electric lawn mower with a clutch that can be automatically cut off after the self-propelled motor is stopped.
  • the clutch can ensure that the lawn mower can be easily pushed and pulled after the self-propelled motor stops.
  • the earlier conventional lawn mower generally includes a casing, a mowing cutter pivoted in the casing, a mowing motor mounted in the casing to drive the cutter for mowing, and a self-propelled motor mounted in the casing.
  • a self-propelled drive shaft pivotally connected to the rear of the casing, a pair of rear wheels mounted on the self-propelled drive shaft, a speed reduction mechanism disposed between the self-propelled motor and the self-propelled drive shaft, and a front portion mounted on the casing
  • the disadvantage of this type of lawn mower is that the rear wheel is simultaneously stopped relative to the self-propelled motor after the self-propelled motor is stopped. Therefore, it is difficult to push and pull the lawn mower after the self-propelled motor stops.
  • an improved lawn mower with a clutch has appeared.
  • the lawn mower is provided with a clutch between the self-propelled motor and the speed reduction mechanism. After the self-propelled motor stops, the user can operate the operating mechanism near the handle to disconnect the clutch, and the rear wheel is separated from the self-propelled motor. The lawn mower can be easily pushed and pulled.
  • the technical problem to be solved by the present invention is to provide a lawn mower with an automatic clutch that can be automatically disconnected after the self-propelled motor stops operating.
  • the present invention provides a lawn mower with an automatic clutch, which
  • the utility model comprises a casing, a mowing cutter pivoted in the casing, a mowing motor installed in the casing to drive the mowing, a self-propelled motor arranged in the casing, and a fixed deceleration relative to the self-propelled motor.
  • An automatic clutch is disposed between the self-propelled motor and the speed reduction mechanism, and the automatic clutch includes a cylindrical outer casing, an output shaft fixed to one side of the outer casing, and a pair of symmetrical clutch blocks housed in the outer casing, An elastic member for pulling the two clutch blocks toward each other, an input shaft passing between the two clutch blocks and fixed to the other side of the outer casing opposite to the output shaft by a bearing, and a fixing shaft fixed on the input shaft
  • Each of the clutch blocks has a circular arc outer edge and a middle transverse sliding groove, and the outer edge and the cylindrical inner side wall of the outer casing have a certain frictional force; the sliding block is slidably accommodated in the two clutch blocks Within the transverse chute, the power of the self-propelled motor is transmitted to the input shaft via the power transmission device.
  • the beneficial effect of the invention is that the self-propelled motor can be automatically disconnected, no artificial manipulation action is needed, the working efficiency of the mowing is improved, and the work load of the lawn mower is reduced. At the same time, when the self-propelled motor stops working, the mower can automatically enter the state of being convenient to push and pull, which is more in line with the thinking habits of the mower user, and reduces the uselessness caused by technical problems.
  • Figure 1 is a perspective exploded view of a preferred embodiment of a lawn mower with an automatic clutch of the present invention.
  • Figure 2 is a partially enlarged perspective view of the embodiment of Figure 1.
  • Figure 3 is an enlarged plan view showing the portion of the deceleration mechanism of Figure 2 removed.
  • Figure 4 is an enlarged perspective view showing another portion of the embodiment shown in Figure 1.
  • Figure 5 is a partially enlarged perspective exploded view of the embodiment of Figure 1.
  • Figure 6 is a schematic exploded view of another embodiment of the embodiment of Figure 1.
  • the lawn mower 1 includes a casing 10, a mowing cutter 11 pivotally connected to the casing 10, a mowing motor 12 mounted in the casing 10 to drive the cutter 11 for mowing, and is disposed in the casing 10.
  • the self-propelled motor 13, the speed reduction mechanism 14 fixed to the self-propelled motor 13, the self-propelled drive shaft 15 driven by the speed reduction mechanism 14, the pair of rear wheels 16 driven by the self-propelled drive shaft 15, and the front portion of the casing 10 are mounted.
  • the speed reduction mechanism 14 is relatively fixed to the self-propelled motor 13 through the speed reduction mechanism housing 141, and the self-propelled drive shaft 15 passes through the speed reduction mechanism housing 141 through the bearing 151.
  • the present invention is characterized by an automatic clutch 20 disposed between the self-propelled motor 13 and the speed reduction mechanism 14.
  • the automatic clutch 20 includes a cylindrical outer casing 21, an output shaft 22 fixed to one side of the outer casing 21, a pair of symmetrical clutch blocks 23 housed in the outer casing 21, and a pair.
  • An elastic member 24 that pulls the two clutch blocks 23 toward each other, an input shaft 26 that passes between the two clutch blocks 23 and is fixed to the other side of the outer casing 21 opposite to the output shaft 22 by a bearing 25, and a solid A block 27 is provided on the input shaft 26.
  • Each of the clutch blocks 23 has a circular arc-shaped outer edge 231 and a middle lateral sliding groove 232.
  • the outer edge 231 and the cylindrical inner side wall 211 of the outer casing 21 have a certain frictional force; the block 27 is slidably received in the lateral sliding groove 232 of the two clutch blocks 23, so that the two clutch blocks 23 can be along The blocks 27 move back and forth facing each other. Power from the self-propelled motor 13 can be transmitted to the input shaft 26 via the power transmission device 131.
  • the two elastic members 24 are two springs.
  • the user can control the operating mechanism 19 on the operating handle 18 to open the mowing motor 12 and the self-propelled motor 13.
  • the power of the self-propelled motor 13 is transmitted to the input shaft 26 of the automatic clutch 20 via the V-belt 131.
  • the rotation of the input shaft 26 causes the rotation of the block 27, and the block 27 accommodated in the lateral chute 232 will push the two clutch blocks 23 to rotate.
  • the clutch block 23 is rotated, the two clutch blocks 23 will undergo radial centrifugal movement against the tension of the two elastic members 24 due to inertia until the outer edge 231 abuts against the cylindrical inner side wall 211 of the outer casing 21.
  • the frictional force between the outer edge 231 and the cylindrical inner wall 211 increases as the rotational speed of the self-propelled motor 13 increases.
  • the outer casing 21 will also start to rotate under the action of the frictional force.
  • the output shaft 22 fixed to the side of the outer casing 21 will also rotate with the rotation of the outer casing 21, drive the speed reduction mechanism 14, and drive the self-propelled drive shaft 15 to drive the rear wheel 16.
  • the automatic clutch 20 is in a 'closed' state.
  • the block 27 will gradually stop rotating.
  • the centrifugal force of the two clutch blocks 23 gradually disappears, and the two elastic members 24 are moved toward each other along the guiding action of the block 27, and the outer edge 231 is separated from the cylindrical inner wall 211.
  • the automatic clutch 20 is in an 'off' state, and the rear wheel 16, the self-propelled drive shaft 15, and the speed reduction mechanism 14 are separated from the self-propelled motor 13, and the user can conveniently push and pull the lawn mower 1.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Harvester Elements (AREA)

Abstract

一种带有自动离合器的割草机，包括一个机壳（10）、割草刀具（11）、割草电机（12）、自走电机（13）、减速机构（14）、由减速机构（14）驱动的自走驱动轴（15）、由自走驱动轴（15）驱动的一对后轮（16）、前轮(17）、操作把手（18）、电源（30）以及在把手上的操纵机构（19）。在自走电机（13）和减速机构（14）之间设置有一个自动离合器（20），该自动离合器（20）包括一个圆筒状的外壳（21）、一条固设在外壳（21）的一侧的输出轴（22）、一对容纳于外壳（21）内对称的离合块（23）、一对将两个离合块（23）拉向彼此的弹性件(24）、一条穿过两个离合块（23）之间并通过一个轴承（25）固定于外壳（21）与输出轴（22）相对的另一侧的输入轴（26）、以及一个固设在输入轴（26）上的蹄块（27）。每块离合块（23）具有一条圆弧形的外缘（231）和一条中部横向滑槽（232）。蹄块（27）可滑动地容纳于两个离合块（23）的横向滑槽（232）之内，自走电机（13）的动力经动力传输装置（131）传至输入轴（26）。

Description

一种带有自动离合器的割草机 技术领域
本发明涉及 一种电动割草机，尤其有关于一种带有在自走马达停止后能够自动切断的离合器的电动割草机，这种离合器可以保证割草机在自走马达停止后方便的进行推拉。
背景技术
自走式割草机是一种常见的工具。较早的传统割草机一般包括一个机壳、枢接在机壳内的割草刀具、安装在机壳之内驱动刀具进行割草的割草电机、安装在机壳内的自走电机、枢接在机壳上后部的自走驱动轴、安装在自走驱动轴上的一对后轮、设置在自走电机和自走驱动轴之间的减速机构、安装在机壳前部的一对前轮、安装在机壳后方的操作把手、电源、以及在把手上的操纵机构。
这种割草机的缺点是自走电机停止后，后轮同时相对于自走电机停止。所以当自走电机停止后割草机就很难进行推拉。为了解决上述技术问题，出现了一种改进后的带有离合器的割草机。这种割草机在自走电机和减速机构之间设置了一个离合器，在自走电机停止后使用者可以操作把手附近的操作机构断开离合器，后轮与自走电机脱离，对停止后的割草机就可以方便的进行推拉。
但现有的带离合器的自走割草机都是手动的，即在自走电机停止工作后需要使用者手动操作才能断开离合器。这样就给使用者带来了不方便。
 技术问题
本发明所要解决的技术问题是提供一种带自动离合器的割草机，该割草机在自走电机停止工作后离合器能够自动断开。
技术解决方案
为了解决上述技术问题，本发明提供有一种带自动离合器的割草机， 其 包括一个机壳、枢接在机壳内的割草刀具、安装在机壳之内驱动刀具进行割草的割草电机、设置在机壳内的自走电机、与自走电机相对固定的减速机构、由减速机构驱动的自走驱动轴、由自走驱动轴驱动的一对后轮、安装在机壳前部的一对前轮、安装在机壳后方的操作把手、电源、以及在把手上的操纵机构。在自走电机和减速机构之间设置有一个自动离合器，该自动离合器包括一个圆筒状的外壳、一条固设在外壳的一侧的输出轴、一对容纳于外壳内对称的离合块、一对将两个离合块拉向彼此的弹性件、一条穿过两个离合块之间并通过一个轴承固定于外壳与输出轴相对的另一侧的输入轴、以及一个固设在输入轴上的啼块；每块离合块具有一条圆弧形的外缘和一条中部横向滑槽，外缘和外壳的筒形内侧壁之间具有一定的摩擦力；啼块可滑动的容纳于两个离合块的横向滑槽之内，自走电机的动力经动力传输装置传至输入轴。
有益效果
本发明所带来的有益效果是自走电机能够自动断开，不再需要人为的操控动作，提高了割草的工作效率，减轻了割草机使用的工作负担。同时，当自走电机停止工作后割草机就可以自动进入可方便推拉的状态，更符合割草机使用者的思维习惯，减少了因技术问题而带来的使用不惯感。
附图说明
图1 是本发明一种带有自动离合器的割草机的较佳实施例的立体爆炸示意图。
图2是图1所示实施例的部分放大立体示意图。
图3是图2所示部分去除减速机构外壳后的放大平面示意图。
图4是图1所示实施例的另一部分放大立体示意图。
图5是图1所示实施例的部分放大立体爆炸示意图。
图6是图1所示实施例的另一放大立体爆炸示意图。
 本发明的最佳实施方式
图1和2所示为本发明一种带有自动离合器的割草机较佳实施例的立体爆炸示意图。该割草机1包括一个机壳10、枢接在机壳10内的割草刀具11、安装在机壳10之内驱动刀具11进行割草的割草电机12、设置在机壳10内的自走电机13、与自走电机13相对固定的减速机构14、由减速机构14驱动的自走驱动轴15、由自走驱动轴15驱动的一对后轮16、安装在机壳10前部的一对前轮17、安装在机壳10后方的操作把手18、电源30、以及在把手上的操纵机构19。在本实施例中，减速机构14通过减速机构外壳141与自走电机13相对固定，自走驱动轴15通过轴承151穿过减速机构外壳141。
如图3所示，本发明的特征在于在自走电机13和减速机构14之间设置的一个自动离合器20。同时参考图4、5、6，自动离合器20包括一个圆筒状的外壳21、一条固设在外壳21的一侧的输出轴22、一对容纳于外壳21内对称的离合块23、一对将两个离合块23拉向彼此的弹性件24、一条穿过两个离合块23之间并通过一个轴承25固定于外壳21与输出轴22相对的另一侧的输入轴26、以及一个固设在输入轴26上的啼块27。每块离合块23具有一条圆弧形的外缘231和一条中部横向滑槽232。外缘231和外壳21的筒形内侧壁211之间具有一定的摩擦力；啼块27可滑动的容纳于两个离合块23的横向滑槽232之内，使得两个离合块23可以沿着啼块27相向或相背来回移动。来自自走电机13的动力可以经动力传输装置131传至输入轴26。在本实施例中，两个弹性件24是两个弹簧。
在使用时，使用者可以控制操作把手18上的操纵机构19来打开割草电机12和自走电机13。自走电机13的动力经三角皮带131传动至自动离合器20的输入轴26。输入轴26的转动带动啼块27的转动，容纳于横向滑槽232之内的啼块27将推动两个离合块23转动。在离合块23转动的时候，两个离合块23将由于惯性作用克服两个弹性件24的拉力进行径向的离心运动直至外缘231紧贴外壳21的筒形内侧壁211。外缘231与筒形内壁211之间的摩擦力随着自走电机13转速的增加而增加，当摩擦力大到一定程度时，外壳21将在摩擦力的带动下也开始转动。固设在外壳21一侧的输出轴22也将随外壳21的转动而转动，带动减速机构14，驱动自走驱动轴15驱动后轮16。此时，自动离合器20处于一种'合'的状态。
如果使用者通过操纵机构19关闭割草电机12和自走电机13，啼块27将逐渐停止转动。两个离合块23的离心力逐渐消失，在两个弹性件24的拉力下沿啼块27的导向作用相向移动，外缘231离开筒形内壁211。此时自动离合器20处于一种'离'的状态，后轮16、自走驱动轴15、以及减速机构14与自走电机13分离，使用者可以方便的对割草机1进行推拉的操作。

Claims (1)

  1. 1. 一种带有自动离合器的割草机，其 包括一个机壳（10）、枢接在机壳（10）内的割草刀具（11）、安装在机壳（10）之内驱动刀具（11）进行割草的割草电机（12）、设置在机壳（10）内的自走电机（13）、与自走电机（13）相对固定的减速机构（14）、由减速机构（14）驱动的自走驱动轴（15）、由自走驱动轴（15）驱动的一对后轮（16）、安装在机壳（10）前部的一对前轮（17）、安装在机壳（10）后方的操作把手（18）、电源（30）以及在把手上的操纵机构（19），其特征在于在自走电机（13）和减速机构（14）之间设置的一个自动离合器（20），该自动离合器（20）包括一个圆筒状的外壳（21）、一条固设在外壳（21）的一侧的输出轴（22）、一对容纳于外壳（21）内对称的离合块（23）、一对将两个离合块（23）拉向彼此的弹性件（24）、一条穿过两个离合块（23）之间并通过一个轴承（25）固定于外壳（21）与输出轴（22）相对的另一侧的输入轴（26）、以及一个固设在输入轴（26）上的啼块（27）；每块离合块（23）具有一条圆弧形的外缘（231）和一条中部横向滑槽（232），外缘（231）和外壳（21）的筒形内侧壁（211）之间具有一定的摩擦力；啼块（27）可滑动的容纳于两个离合块（23）的横向滑槽（232）之内，自走电机（13）的动力经动力传输装置（131）传至输入轴（26）。
    2. 如权利要求1所述的带有自动离合器的割草机，其特征在于减速机构（14）通过一个减速机构外壳（141）与自走电机（13）相对固定。
    3. 如权利要求1所述的带有自动离合器的割草机，其特征在于自走驱动轴（15）通过轴承（151）穿过减速机构外壳（141）。
PCT/CN2012/080930 2012-01-11 2012-09-03 一种带有自动离合器的割草机 WO2013104191A1 (zh)

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FR3036447A1 (fr) * 2015-05-19 2016-11-25 France Reducteurs Transmission, ainsi qu'un engin roulant equipe d'une telle transmission
EP3338530A4 (en) * 2015-08-18 2019-04-24 Changzhou Globe Co., Ltd. DRIVE SYSTEM FOR GARDENING TOOL WITH AUTOMATIC DRIVE FUNCTION
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