WO2011094958A1 - 一种多功能打草机 - Google Patents

一种多功能打草机 Download PDF

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Publication number
WO2011094958A1
WO2011094958A1 PCT/CN2010/070786 CN2010070786W WO2011094958A1 WO 2011094958 A1 WO2011094958 A1 WO 2011094958A1 CN 2010070786 W CN2010070786 W CN 2010070786W WO 2011094958 A1 WO2011094958 A1 WO 2011094958A1
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WIPO (PCT)
Prior art keywords
handle
wheel
main
assembly
ratchet
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PCT/CN2010/070786
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English (en)
French (fr)
Inventor
韩焕忠
Original Assignee
嘉兴亚特园林机械研究所
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Publication of WO2011094958A1 publication Critical patent/WO2011094958A1/zh

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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
    • A01D34/835—Mowers; Mowing apparatus of harvesters specially adapted for particular purposes
    • A01D34/84—Mowers; Mowing apparatus of harvesters specially adapted for particular purposes for edges of lawns or fields, e.g. for mowing close to trees or walls

Definitions

  • the present invention relates to a garden tool, and more particularly to a multifunctional lawn mower.
  • a lawn mower is a commonly used tool in gardening work, and is particularly suitable for trimming a lawn. In addition to grass cutting and mowing on a common plane, the lawn trimming needs to be trimmed, trimmed, and the like.
  • the operation, but the general lawn mower function is relatively simple, the gardener must be equipped with a variety of tools besides the lawnmower to complete the work, which increases the cost of equipment purchase, and frequent replacement of various tools. The labor intensity of the garden workers is increased and the work efficiency is lowered.
  • a power tool (turf finishing tool) comprising a handle assembly, a working head, a handle assembly being rotatably coupled to the working head by a connecting device, and a handle assembly relative to the working head
  • the rotation realizes the conversion of the two functions of the work head, the grass trimming and the trimming function, and at the same time, a roller which plays a supporting guiding role when trimming the working head is added to the working head, and the patent solves the function of the original grass cutter.
  • the problem to be solved by the present invention is to provide a multifunctional lawn mower with compact structure, convenient operation and flexibility, which realizes the function of grass cutting, trimming function and quick conversion of two functions while ensuring playing.
  • the grass machine has good working reliability and stability when working under two functions, and improves the efficiency of garden operation.
  • a multifunctional lawn mower comprising a main handle assembly, a machine pole and a grass trimming mechanism, and a top of the grass trimming mechanism is provided with a main body shell assembly, a host
  • the bottom of the shell assembly is provided with a roller supporting mechanism, and the top of the rod and the main handle assembly are actively connected by a conversion mechanism, and the bottom of the rod is hinged to the main assembly by a connecting mechanism
  • the connecting mechanism and the main casing assembly are further provided with an elastic braking device for rotating the connecting mechanism.
  • the connecting mechanism is a connecting housing fixedly inserted into the bottom of the pole, and the rotating shaft is transversely inserted into the shell of the main assembly, the connecting shell is hinged on the rotating shaft, and the elastic The brake device snaps the rotation of the connection housing.
  • the elastic braking device comprises a ratchet wheel rotatably mounted on the rotating shaft and a cylinder assembly fixed in the main casing assembly for locking the rotation of the ratchet, the ratchet wheel being fixed to the connecting housing,
  • the cylinder assembly includes a cylinder body, and a main air chamber and a sub air chamber communicating with the main air chamber are disposed in the cylinder body, wherein the main air chamber is provided with a piston rod, an inner top surface of the piston rod and a main air chamber The bottom surface of the piston rod is provided with a spring.
  • the front end surface of the piston rod is provided with a latching protrusion matched with the tooth groove of the ratchet.
  • the auxiliary air chamber is provided with a ball, and the ball is provided by a compression spring disposed behind the auxiliary air chamber. Elastically sealing the joint between the auxiliary air chamber and the main air chamber; the inner wall of the connecting shell is provided with a protective fence for guiding the rotation of the ratchet along the outer circular surface of the ratchet, the protective fence Attached to the housing of the main housing assembly.
  • the roller supporting mechanism includes a wheel handle I and a wheel handle II, and the inner ends of the wheel handle I and the wheel handle II are coaxially transferred to the bottom of the casing of the main casing assembly by a set disc.
  • the wheel handle I is located above the wheel handle II, and the outer end of the wheel handle I and the wheel handle II is provided with a roller; the outer circumference of the wheel handle I is spaced apart from the center angle ⁇ of the wheel to set the positioning hole I and the positioning hole I', the positioning hole I
  • the outer cymbal is provided with a positioning hole II corresponding to the upper and lower sides of the positioning hole I'. After the wheel shank II rotates a central angle ⁇ around the disk, the positioning hole II is clamped on the side of the elastic positioning pin to restrict the rotation of the wheel handle II.
  • the elastic locating pin is in the state of being clamped, and the wheel shank I and the wheel shank II are in a bifurcated structure for supporting the grass trimming mechanism in the vertical state, the fork angle of the wheel shank I and the wheel shank II and the center of the circle The angle ⁇ is the same.
  • a torsion spring is arranged between the wheel handle I and the wheel handle II, and the spring arm of the upper end of the torsion spring elastically abuts the disk of the wheel handle I. Inside, the spring arm at the lower end of the torsion spring elastically abuts against the disc of the wheel handle II in the opposite direction.
  • the setting of the torsion spring can reset the wheel handle ,, apply force to the wheel handle II, adjust the height of the grass when trimming, and when the wheel handle II is stressed, the torsion spring can also play a certain damping effect.
  • the conversion mechanism includes a ring gear that is axially meshed with the rod at the top of the rod.
  • the ring gear I is fixed to the rod
  • the ring gear II is fixed to the housing of the main handle assembly
  • the rod located in the main handle assembly housing is also sleeved with a compression spring elastically connected to the ring.
  • the bottom of the gear I is also sleeved with a compression spring elastically connected to the ring.
  • the top end of the rod and the sleeve of the main handle assembly are provided with an elastic ring, and an annular groove is formed on the inner wall of the main handle assembly to engage the elastic ring.
  • the main handle assembly housing is elastically connected to the rod; an annular gap is left between the inner wall of the ring gear I and the ring gear II and the outer wall of the rod, and the annular gap and the elastic ring constitute a shock absorbing structure.
  • the main handle assembly is also hinged with a sub-handle assembly on the housing, the sub-handle assembly includes a sub-handle holder and a sub-handle grip, and the sub-handle grip is internally fixed with a rotating rod
  • the two ends of the rotating rod are transferred to the top of the auxiliary handle housing, and the bottom of the auxiliary handle housing is provided with a movable ratchet, and the two sides of the movable ratchet are provided with corresponding pins for active wearing.
  • the connecting handles at the two ends of the bottom of the auxiliary handle base are provided with a fixed ratchet wheel axially engaged with the movable ratchet, and a connecting seat and a side of the movable ratchet are arranged to push the movable ratchet away from the meshing direction.
  • a spring, another connecting seat is provided with a wedge-shaped block for pushing the movable ratchet in a direction of engagement, the wedge-shaped surface of the wedge-shaped block faces the movable ratchet, and the auxiliary handle is provided with a wedge-shaped block driven by the sub-handle grip Lifting mechanism that pulls up.
  • the lifting mechanism comprises a fixing block which is arranged on the top of the auxiliary handle seat and rotates and rises with the end of the rotating rod.
  • the fixing block is connected to the wedge-shaped block by a traction cable, and the upper end surface of the wedge-shaped card and the auxiliary handle A spring is provided between the housings to bring the wedge-shaped blocks back to the original position.
  • the grass trimming mechanism further comprises an adjusting device for changing the height of the grass trimming mechanism, wherein the adjusting device comprises a pair of walking wheels disposed at the side of the shell of the grass trimming mechanism.
  • the traveling wheel and the trimming mechanism of the grass trimming mechanism are connected by a wheel sway, the upper end of the wheel swing is fixed with a rotating shaft, the ratchet wheel I is fixed at both ends of the rotating shaft, and the corresponding wheel yoke connection is arranged on the shell of the grass trimming mechanism
  • the housing of the grass trimming machine is provided with an eccentric wheel rod, and the length of the eccentric wheel rod when the ratchet wheel I meshes with the ratchet wheel II
  • the shaft end faces are pressed against the outer end surface of one of the ratchets II.
  • the utility model has the beneficial effects: the utility model not only has two functions of trimming and grassing, but the two functions can be quickly and conveniently converted, and the elastic braking device can make the lawnmower have the operation under two functions. Good work reliability and stability, improve the efficiency of garden work;
  • the handle and the auxiliary handle used in the utility model can be rotated correspondingly when the function of the lawn mower is changed, and the positioning is realized after the rotation, the operation is flexible, convenient and stable.
  • the shock absorber structure is arranged on the rod and the handle and the roller support mechanism, which protects the various components in the lawnmower from vibration and work more stably, and at the same time reduces noise; the utility model is playing grass and The height can be adjusted when trimming, so that the lawn can be better trimmed.
  • Figure 1 is a schematic view of the overall structure of the present invention
  • FIG. 2 is a schematic view showing the connection structure of the machine rod and the main handle assembly of the present invention
  • Figure 3 is a schematic structural view of the sub-handle assembly of the present invention
  • Figure 4 is an enlarged view of A in Figure 3;
  • Figure 5 is an enlarged view of B in Figure 3;
  • FIG. 6 is a schematic structural view of the adapter mechanism and the elastic brake device of the present invention.
  • Figure 7 is an enlarged view of a portion C in Figure 6;
  • Figure 8 is an enlarged view of D in Figure 7;
  • Figure 9 is a schematic structural view of the roller supporting mechanism of the present invention.
  • Figure 10 is a side view of Figure 9;
  • Figure 11 is a schematic view showing the installation of the torsion spring in the roller support mechanism
  • Figure 12 is a schematic structural view of the adjusting device in the grass trimming mechanism
  • Figure 13 is an enlarged view of E in Figure 11. 1 and 2, the utility model relates to a multifunctional lawn mower, which comprises a main handle assembly 2, a machine pole 1 and a grass trimming mechanism 3, and a grass trimming mechanism 3 is provided at the top of the grass trimming mechanism 3
  • the main body shell assembly 4 the bottom of the main body shell assembly 4 is provided with a roller supporting mechanism, and the top of the rod 1 and the main handle assembly are lapped by a conversion mechanism, and the rod 1 can be relatively aligned around its own axis
  • the main handle assembly 2 is rotated, and at the same time, the main handle assembly 2 is also rotatable about the shaft 1 of the shaft 1;
  • the conversion mechanism includes a ring gear I 21 and a ring that is axially engaged along the rod 1 at the top of the rod 1
  • the gear ⁇ 22 , the ring gear I 21 is fixed to the rod 1
  • the ring gear ⁇ 22 is fixed to the housing 20 of the main handle assembly
  • the main handle assembly housing 20 is also hinged with a sub-handle assembly 6, which includes a sub-handle 61 and a sub-handle grip 60.
  • the auxiliary handle grip 60 is fixedly mounted with a rotating rod 62.
  • the two ends of the rotating rod 62 are transferred to the top of the housing of the auxiliary handle base 61.
  • the bottom of the auxiliary handle base 61 is provided with a movable ratchet 64.
  • the two sides of the movable ratchet 64 are provided with corresponding pins 65 for active wearing on the connecting seats 66 provided at the two ends of the bottom of the auxiliary handle base 61.
  • the housing 20 of the main handle assembly is provided with the movable ratchet 64 shaft.
  • a spring 67 is provided between one of the connecting seats and one side of the movable ratchet 64 for pushing the movable ratchet 64 away from the meshing direction, and the other connecting seat is provided with a wedge shape for pushing the movable ratchet 64 to the meshing direction.
  • the block 68 has a wedge-shaped surface facing the movable ratchet 64.
  • the auxiliary handle base 61 is provided with a lifting mechanism driven by the secondary handle grip 60 to pull the wedge-shaped block 68 upward.
  • the lifting mechanism includes a fixing block 69 which is arranged on the top of the sub-handle base 61 and rotates upward with the end of the rotating rod 62.
  • the fixing block is connected to the wedge-shaped block 68 via a traction cable 63, and the upper end surface of the wedge-shaped block 68
  • a spring 681 is provided between the housing of the sub-handle 61 and the wedge-shaped block 68.
  • the bottom of the rod 1 of the present invention is hinged to the main assembly by a connecting mechanism, and the connecting mechanism and the main assembly 4 are further provided with the elasticity of the locking mechanism.
  • Braking device is a connecting housing 50 that is fixedly inserted into the bottom of the lever 1.
  • the housing 40 of the main housing assembly is laterally inserted with a rotating shaft 41.
  • the connecting housing 50 is hinged to the rotating shaft 41.
  • the elastic brake device locks the rotation of the connecting housing; the lever 1 is rotatable relative to the main housing assembly about the rotating shaft within a certain angle range.
  • the elastic braking device comprises a ratchet 51 rotatably mounted on the rotating shaft 41 and a cylinder assembly fixed in the main casing assembly 4 for locking the rotation of the ratchet 51, the ratchet fixed to the connecting housing, the cylinder
  • the assembly includes a cylinder body 42.
  • the cylinder body is provided with a main air chamber 43 and a sub air chamber 44 communicating with the main air chamber.
  • the main air chamber is provided with a piston rod 45, an inner top surface of the piston rod and a main air chamber.
  • a spring 46 is interposed between the bottom surface of the piston rod.
  • the front end surface of the piston rod is provided with a latching protrusion 451 matched with the tooth groove of the ratchet.
  • the auxiliary air chamber 44 is provided with a ball 47.
  • the ball is disposed in the auxiliary air chamber.
  • the rear compression spring 471 will bounce it
  • the sealing is at the communication port between the auxiliary air chamber and the main air chamber.
  • the inner wall of the connecting housing is provided with a protective shroud 52 for guiding the ratchet wheel 51 along the outer circumferential surface of the ratchet, and the protective shroud 52 is connected to the casing 40 of the main casing assembly.
  • the roller support mechanism of the present invention includes a wheel shank I 48 and a wheel shank 1149.
  • the inner ends of the wheel shank I 48 and the wheel shank 49 are coaxially disposed through the set disks 482 and 492.
  • the handle is transferred to the bottom of the casing 40 of the main casing assembly, the wheel handle 1 48 is located above the wheel handle II 49, and the outer end of the wheel handle 1 48 and the wheel handle 1149 is provided with rollers 481, 491; the inner end of the wheel handle 1 48
  • the outer edge of the disk 482 is spaced apart from the central angle ⁇ to provide a positioning hole I 483 and a positioning hole I 484.
  • the longitudinal positioning of the positioning hole I 483 is elastically fitted with an elastic positioning pin 7 to fix the wheel handle I 48 to the housing 40 of the main assembly.
  • the outer cymbal 492 of the wheel shank 49 is provided with a positioning hole 11493 corresponding to the upper and lower sides of the positioning hole I 484, and the wheel shank 49 is rotated around the disk
  • the positioning hole 493 493 is locked in the elastic positioning pin 7 - the side restricts the rotation of the handle II 49.
  • the handle I 48 and the handle II 49 are bifurcated.
  • the structure is used to support the grass trimming mechanism 3 in the vertical state, the bifurcation angle of the wheel handle I 48 and the wheel handle II 49
  • the central angle ⁇ is the same.
  • a torsion spring 8 is also disposed between the wheel shank I 48 and the wheel shank 49 for tightening the wheel shank 49 toward the wheel shank I 48.
  • the spring arm of the upper end of the torsion spring 8 is elastically abutted to the wheel shank I 48 .
  • the spring end of the lower end of the torsion spring 8 is elastically abutted against the disc of the wheel handle II 49 in the opposite direction.
  • the setting of the torsion spring 8 can reset the wheel handle II 49, apply force to the wheel handle ⁇ 49, and can adjust the grass height when trimming, and the torsion spring 8 can also be used when the wheel handle ⁇ 49 is stressed. Play a certain damping effect.
  • the grass trimming mechanism 3 further includes an adjusting device for changing the grassing height of the grass trimming mechanism 3, and the adjusting device comprises a shell disposed on the grass trimming mechanism 3 a pair of walking wheels 31 of the body edge, the traveling wheel 31 and the casing 30 of the grass trimming mechanism are connected by a wheel yoke 32, and the upper end of the wheel yoke 32 is fixed with a rotating shaft 33, and the ratchet wheel I 34 is fixed at both ends of the rotating shaft.
  • the base of the grass trimming mechanism 3 is provided with two ratchets II 35 which are coupled with the rotating shaft and elastically engaged with the ratchet I 34 at the joint of the wheel yoke 32.
  • the shell of the grass trimming mechanism 3 is provided with a When the eccentric wheel lever 36 is engaged with the ratchet wheel II 35, the long-axis end surface of the eccentric wheel bar is pressed against the outer end surface of one of the ratchet wheels II. When the walking wheel 31 is on the ground, it is possible to hold the grass in a single hand.
  • the elastic brake device When switching from the grass-grazing function to the trimming function, first move the lever 1 to the state parallel to the grass trimming mechanism 3, as shown in Fig. 6. After the rotation stops, the elastic brake device is connected. The housing realizes the positioning of the rod 1 , and the rotating rod 1 rotates the grass trimming mechanism 3 into the vertical state, and simultaneously unscrews the wheel handle II 49, so that the wheel handle II 49 and the wheel handle I 48 component fork structure are supported on the ground.
  • the trimming function of the lawnmower can be realized; in order to be suitable for operation, after the function conversion is completed, the lever 1 is pulled down or the main handle assembly is pulled up, so that the ring gear 1 21 and the ring gear ⁇ 22 are mutually In the disengaged state, the operator can rotate the main handle assembly by an angle with respect to the lever 1 according to his own operating habits, and then release the lever 1 or the main handle assembly to re-engage the ring gear I 21 with the ring gear ⁇ 22, The main handle assembly and the rod 1 are positioned. At this time, the operator holds the main handle assembly housing, pushes the grass trimming mechanism 3 for trimming, and the two-hand operation can also hold the sub-handle assembly at the same time.
  • Sub-handle grip 60 for trimming When trimming, force the handle II 49 to adjust the height of the grass when trimming, and the torsion spring 8 between the handle 1 48 and the handle ⁇ 49 can also play a certain damping effect.
  • the internal parts of the grass machine are not affected by vibration when working.
  • the grass trimming mechanism 3 When the trimming machine can be converted to the grass-grazing function, the grass trimming mechanism 3 is first switched from the vertical state to the ground level state, and then the lever 1 is rotated in the opposite direction to make the grass trimming. Institution 3 has a certain angle Degree, the grass-graining function can be realized. At this time, the wheel handle 1 48 and the wheel handle 11 49 can automatically return to the coincident state, and can be used as a protective frame when playing grass, and the adjusting device at this time serves as a supporting grass trimming mechanism 3 And the dual function of adjusting the height of the grass, when the walking wheel 31 is on the ground, the hand can be grasped and grassed.

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Description

一种多功能打草机
技术领域 本实用新型涉及一种园林工具， 尤其是一种多功能打草机。 背景技术 打草机是园林作业中常用的一种工具， 特别适用于对草坪的修整， 草坪的 修整除了普通平面上的打草、 割草外， 还需进行切边、 修边等空间方位上的操 作， 但一般的打草机功能都比较单一， 园林工人必须要配备除打草机外的其他 多种工具才能完成作业， 这就使得设备的购置成本提高， 而且多种工具间的频 繁更换使得园林工人的劳动强度加大， 工作效率降低。
在专利号为 "200420121263. X "的专利中， 公开了一种电动工具（草坪修整 工具）， 包括把手组件、 工作头， 把手组件通过连接装置与工作头转动连接， 通 过把手组件相对于工作头的转动实现工作头打草与修边两种功能的的转换， 同 时还在工作头上增设了一个在工作头修边时起到支撑导向作用的滚轮， 该专利 虽解决原有打草机功能单一的缺点， 但其功能、 结构还存在如下缺点： 一是把 手组件在相对于工作头转动后没有将其定位， 修边时工作头容易左右晃动， 造 成修边不整齐； 二是修边作业时只采用一个滚轮来支撑工作头， 工作头的工作 稳定性差， 且修边时的打草高度不能调节。 发明内容 本实用新型所要解决的问题就是提供一种结构紧凑， 操作方便、 灵活的多 功能打草机， 在实现打草功能、 修边功能及两种功能快速转换的同时又保证打 草机在两种功能下作业时都具有良好的工作可靠性及稳定性， 提高园林作业效 。
为达上述目的， 本实用新型采用如下技术方案： 一种多功能打草机， 包括 主手柄总成、 机杆及打草修边机构， 打草修边机构顶部设有主机壳总成， 主机 壳总成底部设有滚轮支撑机构， 所述机杆的顶部与主手柄总成的壳体通过转换 机构活络套接， 机杆底部通过连接机构铰接于主机壳总成上， 其特征在于： 所 述的连接机构与主机壳总成间还设有卡制连接机构转动的弹性制动装置。
进一步的， 所述的连接机构为固定插接在机杆底部的连接壳体， 主机売总 成的壳体上横向穿装有转轴， 所述的连接壳体铰接于转轴上， 所述的弹性制动 装置卡制连接壳体的转动。
更进一歩的， 所述的弹性制动装置包括活络安装在转轴上的棘轮及固装在 主机壳总成内用于卡制棘轮转动的气缸组件， 所述的棘轮与连接壳体固接， 所 述的气缸组件包括气缸本体， 气缸本体内设有主气腔及与主气腔相通的副气腔， 所述的主气腔内设有活塞杆， 活塞杆的内顶面与主气腔的底面间夹装有弹簧， 活塞杆的前端面设有与棘轮的齿槽相配的卡位凸起， 所述的副气腔内设有一滚 珠， 该滚珠由设于副气腔后方的压簧将其弹性封接在副气腔与主气腔连通口处; 所述连接壳体的内壁上沿棘轮外圆面环布有用于对棘轮的转动进行导向的防护 围板， 所述防护围板连接在主机壳总成的壳体上。
进一歩的， 所述的滚轮支撑机构包括轮柄 I、 轮柄 II， 所述轮柄 I与轮柄 II的内端通过设置圆盘同轴心转接在主机壳总成的壳体底部， 轮柄 I位于轮柄 II的上方， 轮柄 I与轮柄 II的外端装有滚轮； 轮柄 I内端的圆盘外檐间隔圆心 角 α设置定位孔 I与定位孔 I '， 定位孔 I内纵向活络穿装一弹性定位销将轮柄
I固定在主机壳总成的壳体上， 在轮柄 I与轮柄 II重合状态下， 轮柄 II的圆盘 外檐设有与定位孔 I ' 上下对应的定位孔 II， 在轮柄 II绕其圆盘转动一圆心角 α后， 定位孔 II卡制在弹性定位销一侧限制轮柄 II的转动， 在弹性定位销卡制 状态选下， 轮柄 I与轮柄 II呈分叉结构用于支撑竖直状态下的打草修边机构， 轮柄 I与轮柄 II的分叉角度与所述的圆心角 α相同。
更进一步的， 所述轮柄 I与轮柄 II之间还设有将轮柄 Π向轮柄 I方向收拢 的扭簧， 所述扭簧上端的簧臂弹性抵接在轮柄 I的圆盘内， 扭簧下端的簧臂反 方向弹性抵接在轮柄 II的圆盘内。 扭簧的设置可使轮柄 Π复位， 对轮柄 II施力， 可调节修边时的打草高度， 且轮柄 II受力时， 扭簧还可起到一定的减震作用。
进一步的， 所述的转换机构包括穿装在机杆顶部沿机杆轴向啮合的环齿轮
I与环齿轮 II， 环齿轮 I与机杆固接， 环齿轮 II与主手柄总成的壳体固接， 位 于主手柄总成壳体内的机杆上还套有压簧弹性顶接在环齿轮 I底部。
更进一歩的， 所述机杆的顶端及机杆与主手柄总成壳体的套接口处设有弹 性环圈， 主手柄总成的壳体内壁上设置环形凹槽卡住弹性环圈实现主手柄总成 壳体与机杆的弹性连接； 所述环齿轮 I及环齿轮 II的内壁与机杆的外壁间留有 环形间隙， 该环形间隙与所述的弹性环圈组成减震结构。
进一步的， 所述主手柄总成的壳体上还铰接有副手柄总成， 所述副手柄总 成包括副手柄座及副手柄握把， 所述副手柄握把内固定穿装有转杆， 所述转杆 的两端转接在副手柄座壳体的顶部， 副手柄座壳体底部设有活动棘轮， 所述活 动棘轮的两侧面设置对应的销轴用于活络穿装在设于副手柄座底部两端的连接 座上， 主手柄总成的壳体上设有与活动棘轮轴向啮合的固定棘轮， 其中一连接 座与活动棘轮的一侧面间设有将活动棘轮推离啮合方向的弹簧， 另一连接座上 设有将活动棘轮顶向啮合方向的楔形卡块， 所述楔形卡块的楔形面朝向活动棘 轮， 副手柄座内设有由副手柄握把驱动将楔形卡块向上牵拉的提升机构。 进一步的， 所述的提升机构包括设在副手柄座顶部随转杆端部转动上升的 固定块， 所述固定块通过一牵引索连接所述的楔形卡块， 楔形卡块上端面与副 手柄座壳体间设有将楔形卡块顶回原位的弹簧。
进一歩的， 所述的打草修边机构上还设有改变打草修边机构打草高度的调 节装置， 所述调节装置包括设于打草修边机构壳体边檐的一对行走轮， 所述行 走轮与打草修边机构的壳体通过轮摆连接， 轮摆上端固接有转轴， 转轴两端固 定有棘轮 I， 打草修边机构的壳体上对应轮摆连接处设有与转轴转接并与棘轮 I弹性受压啮合的两个棘轮 II， 打草修边机抅的壳体上设有一偏心轮杆， 在棘 轮 I与棘轮 II啮合时所述偏心轮杆的长轴端面抵压在其中一棘轮 II的外端面 上。 在行走轮着地时， 可以实现单手持握打草。
本实用新型的有益效果： 本实用新型不仅具有修边、 打草两种功能， 且该 两种功能可快速方便的转换， 弹性制动装置可使打草机在两种功能下作业时都 具有良好的工作可靠性及稳定性， 提高园林作业效率； 本实用新型所使用的手 柄及副手柄均可以再打草机功能变换时进行相应转动， 在转动后一样实现定位， 操作灵活、 方便， 稳定性好， 机杆与手柄以及滚轮支撑机构上都设置了减震结 构， 保护了打草机内的各个部件不受震动影响、 工作更加稳定， 同时还可以降 低噪音； 本实用新型在打草与修边时都可以进行高度的调节， 从而能更好的修 剪草坪。 附图说明 下面结合附图对本实用新型作进一步的说明：
图 1为本实用新型的整体结构示意图；
图 2为本实用新型机杆与主手柄总成的连接结构示意图；
图 3为本实用新型副手柄总成的结构示意图； 图 4为图 3中 A处的放大图；
图 5为图 3中 B处的放大图；
图 6为本实用新型转接机构及弹性制动装置的结构示意图；
图 7为图 6中 C处的放大图；
图 8为图 7中 D处的放大图；
图 9为本实用新型滚轮支撑机构的结构示意图；
图 10为图 9的侧视图；
图 11为滚轮支撑机构内扭簧的安装示意图；
图 12为打草修边机构内调节装置的结构示意图；
图 13为图 11中 E处的放大图。 具体实施方式 如图 1、 图 2所示， 本实用新型一种多功能打草机， 包括主手柄总成 2、 机 杆 1及打草修边机构 3， 打草修边机构 3顶部设有主机壳总成 4， 主机壳总成 4 底部设有滚轮支撑机构， 所述机杆 1 的顶部与主手柄总成的壳体通过转换机构 活络套接， 机杆 1可绕自身轴心线相对于主手柄总成 2转动， 同时， 主手柄总 成 2也可绕机杆 1轴心线转动； 转换机构包括穿装在机杆 1顶部沿机杆 1轴向 啮合的环齿轮 I 21与环齿轮 Π 22 , 环齿轮 I 21与机杆 1固接，环齿轮 Π 22与主 手柄总成的壳体 20固接， 位于主手柄总成壳体 20内的机杆 1上还套有压簧 23 弹性顶接在环齿轮 I 21底部； 所述机杆 1的顶端及机杆 1与主手柄总成売体的 套接口处设有弹性环圈 24，主手柄总成的壳体内壁上设置环形凹槽 25卡住弹性 环圈实现主手柄总成壳体与机杆 1的弹性连接； 所述环齿轮 I 21及环齿轮 Π 22 的内壁与机杆 1 的外壁间留有环形间隙， 该环形间隙与所述的弹性环圈组成减 震结构。 如图 3、 图 4、 图 5所示， 所述主手柄总成的壳体 20上还铰接有副手柄总 成 6，所述副手柄总成 6包括副手柄座 61及副手柄握把 60，所述副手柄握把 60 内固定穿装有转杆 62， 所述转杆 62的两端转接在副手柄座 61壳体的顶部， 副 手柄座 61壳体底部设有活动棘轮 64， 所述活动棘轮 64的两侧面设置对应的销 轴 65用于活络穿装在设于副手柄座 61底部两端的连接座 66上， 主手柄总成的 壳体 20上设有与活动棘轮 64轴向啮合的固定棘轮 26， 其中一连接座与活动棘 轮 64的一侧面间设有将活动棘轮 64推离啮合方向的弹簧 67， 另一连接座上设 有将活动棘轮 64顶向啮合方向的楔形卡块 68， 所述楔形卡块 68的楔形面朝向 活动棘轮 64，副手柄座 61内设有由副手柄握把 60驱动将楔形卡块 68向上牵拉 的提升机构。 所述的提升机构包括设在副手柄座 61顶部随转杆 62端部转动上 升的固定块 69， 所述固定块通过一牵引索 63连接所述的楔形卡块 68， 楔形卡 块 68上端面与副手柄座 61壳体间设有将楔形卡块 68顶回原位的弹簧 681。
如图 6至图 8所示， 本实用新型机杆 1底部通过设置连接机构铰接于主机 壳总成上， 所述的连接机构与主机壳总成 4 间还设有卡制连接机构转动的弹性 制动装置。 所述的连接机构为固定插接在机杆 1底部的连接壳体 50， 主机壳总 成的壳体 40上横向穿装有转轴 41，所述的连接壳体 50铰接于转轴 41上，所述 的弹性制动装置卡制连接壳体的转动； 机杆 1 可在一定角度范围内相对于主机 壳总成绕转轴转动。 弹性制动装置包括活络安装在转轴 41上的棘轮 51及固装 在主机壳总成 4内用于卡制棘轮 51转动的气缸组件， 所述的棘轮与连接壳体固 接，所述的气缸组件包括气缸本体 42，气缸本体内设有主气腔 43及与主气腔相 通的副气腔 44， 所述的主气腔内设有活塞杆 45， 活塞杆的内顶面与主气腔的底 面间夹装有弹簧 46， 活塞杆的前端面设有与棘轮的齿槽相配的卡位凸起 451， 所述的副气腔 44内设有一滚珠 47，该滚珠由设于副气腔后方的压簧 471将其弹 性封接在副气腔与主气腔连通口处。 所述连接壳体内壁沿棘轮外圆面环布有用 于对棘轮 51导向的防护围板 52， 所述防护围板 52连接在主机壳总成的壳体 40 上。
当机杆 1 带动连接壳体转动时， 棘轮相应绕转轴转动， 棘轮的转动使活塞 杆向后运动， 滚珠由于气压作用向后运动压縮压簧， 转动停止后， 压簧推动滚 珠向前运动， 利用气压将活塞杆向前顶， 由于活塞杆两端面上都存在气压， 因 此活塞杆只能依靠自身内的弹簧缓慢前行卡制棘轮， 从而实现连接壳体的简便 快捷旋转。
如图 9至图 11所示，本实用新型的滚轮支撑机构包括轮柄 I 48、轮柄 1149， 所述轮柄 I 48与轮柄 Π 49的内端通过设置圆盘 482、 492同轴心转接在主机壳 总成的壳体 40底部， 轮柄 1 48位于轮柄 II 49的上方， 轮柄 1 48与轮柄 1149的 外端装有滚轮 481， 491； 轮柄 1 48内端的圆盘 482外檐间隔圆心角 α设置定位 孔 I 483与定位孔 I ' 484， 定位孔 I 483内纵向活络穿装一弹性定位销 7将轮 柄 I 48固定在主机壳总成的壳体 40上， 在轮柄 I 48与轮柄 Π 49重合状态下， 轮柄 Π 49的圆盘 492外檐设有与定位孔 I ' 484上下对应的定位孔 11493， 在轮 柄 Π 49绕其圆盘转动一圆心角 α后， 定位孔 Π 493卡制在弹性定位销 7—侧限 制轮柄 II 49的转动，在弹性定位销 7卡制状态选下，轮柄 I 48与轮柄 II 49呈分 叉结构用于支撑竖直状态下的打草修边机构 3， 轮柄 I 48与轮柄 II 49的分叉角 度与所述的圆心角 α相同。
所述轮柄 I 48与轮柄 Π 49之间还设有将轮柄 Π 49向轮柄 I 48方向收拢的 扭簧 8， 所述扭簧 8上端的簧臂弹性抵接在轮柄 I 48的圆盘内， 扭簧 8下端的 簧臂反方向弹性抵接在轮柄 II 49的圆盘内。 扭簧 8的设置可使轮柄 II 49复位， 对轮柄 Π 49施力， 可调节修边时的打草高度， 且轮柄 Π 49受力时， 扭簧 8还可 起到一定的减震作用。
如图 12、 图 13所示， 所述的打草修边机构 3上还设有改变打草修边机构 3 打草高度的调节装置， 所述调节装置包括设于打草修边机构 3壳体边檐的一对 行走轮 31， 所述行走轮 31与打草修边机构的壳体 30通过轮摆 32连接， 轮摆 32上端固接有转轴 33， 转轴两端固定有棘轮 I 34， 打草修边机构 3的壳体上对 应轮摆 32连接处设有与转轴转接并与棘轮 I 34弹性受压啮合的两个棘轮 II 35， 打草修边机构 3的壳体上设有一偏心轮杆 36，棘轮 I 34与棘轮 II 35啮合时所述 偏心轮杆的长轴端面抵压在其中一棘轮 II外端面上。 在行走轮 31着地时， 可以 实现单手持握打草。
从打草机打草功能转换到修边功能时， 先将机杆 1 转至与打草修边机构 3 平行的状态， 即如图 6所示， 转动停止后， 弹性制动装置卡制连接壳体实现机 杆 1定位， 转动机杆 1使打草修边机构 3与地面成竖直状态， 同时拨开轮柄 II 49， 使轮柄 II 49与轮柄 I 48成分叉结构支撑在地面上， 即可实现打草机的修边 功能； 为了适于操作， 在完成功能转换后， 将机杆 1 下拉或者是将主手柄总成 上拉， 使环齿轮 1 21与环齿轮 Π 22相互脱离啮合状态， 操作者可根据自己的操 作习惯将主手柄总成相对于机杆 1转动一个角度， 然后松开机杆 1或主手柄总 成使环齿轮 I 21与环齿轮 Π 22再次啮合， 主手柄总成与机杆 1间实现定位， 此 时操作者握住主手柄总成的壳体， 推动打草修边机构 3进行修边， 双手操作的 也可同时握住副手柄总成的副手柄握把 60进行修边作业； 在修边时， 对轮柄 II 49施力， 可调节修边时的打草高度，轮柄 1 48与轮柄 Π 49之间的扭簧 8还可起 到一定的减震作用， 保护打草机内部零件工作时不受震动影响。
从打草机打修边能转换到打草功能时， 先将打草修边机构 3从竖直状态转 换到与地面水平的状态， 再反向转动机杆 1转使其与打草修边机构 3成一定角 度， 即可实现打草功能， 此时轮柄 1 48与轮柄 11 49可自动回复到重合状态， 打 草时可作为防护架使用， 此时的调节装置起到了支撑打草修边机构 3 以及调节 打草高度的双重作用， 在行走轮 31着地时， 可以实现单手持握打草。
除上述优选实施例外， 本实用新型还有其他的实施方式， 本领域技术人员 可以根据本实用新型作出各种改变和变形， 只要不脱离本实用新型的精神， 均 应属于本实用新型所附权利要求所定义的范围。

Claims

权 利 要 求 书
、 一种多功能打草机，包括主手柄总成（2)、机杆（1)及打草修边机构（3)， 打草修边机构顶部设有主机壳总成 （4)， 主机売总成 （4) 底部设有滚轮 支撑机构， 所述机杆 （1) 的顶部与主手柄总成的壳体 （20) 通过转换机 构活络套接， 机杆（1)底部通过连接机构铰接于主机壳总成 （4)上， 其 特征在于： 所述的连接机构与主机壳总成 （4) 间还设有卡制连接机构转 动的弹性制动装置。
、 根据权利要求 1所述的一种多功能打草机， 其特征在于： 所述的连接机构 为固定插接在机杆 （1) 底部的连接売体 （50)， 主机売总成的壳体（40) 上横向穿装有转轴 （41)， 所述的连接壳体 （50) 铰接于转轴上， 所述的 弹性制动装置卡制连接売体 （50) 的转动。
、 根据权利要求 2所述的一种多功能打草机， 其特征在于： 所述的弹性制动 装置包括活络安装在转轴 （41)上的棘轮（51)及固装在主机壳总成 （4) 内用于卡制棘轮（51)转动的气缸组件， 所述的棘轮与连接壳体（50) 固 接， 所述的气缸组件包括气缸本体 （42)， 气缸本体内设有主气腔 （43) 及与主气腔相通的副气腔（44)， 所述的主气腔内设有活塞杆（45)， 活塞 杆的内顶面与主气腔的底面间夹装有弹簧 （46)， 活塞杆的前端面设有与 棘轮的齿槽相配的卡位凸起（451)，所述的副气腔（44)内设有一滚珠 (47)， 该滚珠由设于副气腔后方的压簧 （471) 将其弹性封接在副气腔与主气腔 连通口处； 所述连接売体（50) 的内壁上沿棘轮（51)外圆面环布有用于 对棘轮的转动进行导向的防护围板 （52)， 所述防护围板连接在主机壳总 成的壳体（40) 上。
、 根据权利要求 1或 2或 3所述的一种多功能打草机， 其特征在于： 所述的 滚轮支撑机构包括轮柄 I (48)、 轮柄 II (49)， 所述轮柄 I (48) 与轮柄 II (49) 的内端通过设置圆盘（482， 492 ) 同轴心转接在主机壳总成的壳 体 （40) 底部， 轮柄 I (48)位于轮柄 Π (49) 的上方， 轮柄 I (48 ) 与 轮柄 II (49) 的外端装有滚轮 （481， 491 )； 轮柄 I (48) 内端的圆盘外 檐间隔圆心角 设置定位孔 I (483)与定位孔 I ' (484)，定位孔 I (483) 内纵向活络穿装一弹性定位销 （7) 将轮柄 I (48) 固定在主机壳总成的 売体（40)上； 在轮柄 I (48)与轮柄 II (49)重合状态下， 轮柄 II (49) 的圆盘（492)外檐设有与定位孔 I ' (484)上下对应的定位孔 II (493)， 在轮柄 II (49)绕其圆盘 （492 )转动一圆心角 α后， 定位孔 Π (493)卡 制在弹性定位销 （7 ) —侧限制轮柄 II (49) 的转动， 在弹性定位销卡制 状态选下，轮柄 I (48 ) 与轮柄 II (49) 呈分叉结构用于支撑竖直状态下 的打草修边机构 （3)， 轮柄 I (48) 与轮柄 II (49) 的分叉角度与所述的 圆心角 α相同。
、 根据权利要求 4所述的一种多功能打草机，其特征在于：所述轮柄 I (48) 与轮柄 II (49) 之间还设有将轮柄 II (49) 向轮柄 I (48) 方向收拢的扭 簧 （8)， 所述扭簧 （8) 上端的簧臂弹性抵接在轮柄 I (48) 的圆盘内， 扭簧 （8) 下端的簧臂反方向弹性抵接在轮柄 II (49) 的圆盘内。
、 根据权利要求 1或 2或 3所述的一种多功能打草机， 其特征在于： 所述的 转换机构包括穿装在机杆 （1 ) 顶部沿机杆轴向啮合的环齿轮 I (21)与环 齿轮 II (22)， 环齿轮 I ( 21 ) 与机杆 （1 ) 固接， 环齿轮 Π (22 ) 与主手 柄总成的壳体 （20) 固接， 位于主手柄总成壳体内的机杆 （1 ) 上还套有 压簧 （23) 弹性顶接在环齿轮 I (21 ) 底部。
、 根据权利要求 6所述的一种多功能打草机， 其特征在于： 所述机杆 （1 ) 的顶端及机杆（1 )与主手柄总成壳体（20)的套接口处设有弹性环圈（24)， 主手柄总成的壳体 （20) 内壁上设置环形凹槽 （25) 卡住弹性环圈 （24) 实现主手柄总成壳体与机杆 （1) 的弹性连接； 所述环齿轮 I (21)及环 齿轮 II (22) 的内壁与机杆 （1) 的外壁间留有环形间隙， 该环形间隙与 所述的弹性环圈 （24) 组成减震结构。
、 根据权利要求 1或 2或 3所述的一种多功能打草机， 其特征在于： 所述主 手柄总成的壳体（20)上还铰接有副手柄总成（6)， 所述副手柄总成包括 副手柄座 （61) 及副手柄握把 （60)， 所述副手柄握把 （60) 内固定穿装 有转杆（62)， 所述转杆（62) 的两端转接在副手柄座（61) 壳体的顶部， 副手柄座 （61) 壳体底部设有活动棘轮 （64)， 所述活动棘轮 （64) 的两 侧面设置对应的销轴（65)用于活络穿装在设于副手柄座（61)底部两端 的连接座（66) 上， 主手柄总成的壳体（20)上设有与活动棘轮（64) 轴 向啮合的固定棘轮 （26)， 其中一连接座 （66) 与活动棘轮 （64) 的一侧 面间设有将活动棘轮（64)推离啮合方向的弹簧（67)， 另一连接座（66) 上设有将活动棘轮 （64) 顶向啮合方向的楔形卡块 （68)， 所述楔形卡块 的楔形面朝向活动棘轮（64)， 副手柄座（61) 内设有由副手柄握把（60) 驱动将楔形卡块（68) 向上牵拉的提升机构。
、 根据权利要求 8所述的一种多功能打草机， 其特征在于： 所述的提升机构 包括设在副手柄座（61)顶部随转杆（62)端部转动上升的固定块（69)， 所述固定块 （69) 通过一牵引索 （63) 连接所述的楔形卡块 （68)， 楔形 卡块（68)上端面与副手柄座（61)壳体间设有将楔形卡块顶回原位的弹 簧 （681)。
0、 根据权利要求 1或 2或 3所述的一种多功能打草机， 其特征在于： 所述的 打草修边机构上还设有改变打草修边机构打草高度的调节装置， 所述调节 装置包括设于打草修边机构壳体 （30) 边檐的一对行走轮 （31 )， 所述行 走轮（31 )与打草修边机构的壳体（30)通过轮摆（32)连接， 轮摆（32) 上端固接有转轴（33)， 转轴（33)两端固定有棘轮 I (34)， 打草修边机 构的壳体上对应轮摆（32)连接处设有与转轴 （33)转接并与棘轮 I弹性 受压啮合的两个棘轮 II ( 35 )， 打草修边机构的壳体上设有一偏心轮杆 (36)， 在棘轮 I与棘轮 II啮合时所述偏心轮杆 （36) 的长轴端面抵压在 其中一棘轮 II (35) 的外端面上。
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CN103210739B (zh) * 2012-01-20 2016-05-18 苏州宝时得电动工具有限公司 动力切割工具
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