WO2016015368A1 - 双链电链锯 - Google Patents

双链电链锯 Download PDF

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Publication number
WO2016015368A1
WO2016015368A1 PCT/CN2014/085165 CN2014085165W WO2016015368A1 WO 2016015368 A1 WO2016015368 A1 WO 2016015368A1 CN 2014085165 W CN2014085165 W CN 2014085165W WO 2016015368 A1 WO2016015368 A1 WO 2016015368A1
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WO
WIPO (PCT)
Prior art keywords
chain
saw
gear
saw chain
guiding
Prior art date
Application number
PCT/CN2014/085165
Other languages
English (en)
French (fr)
Inventor
黄建初
王科威
褚坤元
黄亮
陈国龙
Original Assignee
铁鎯电动工具有限公司
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
Priority claimed from CN201420418620.2U external-priority patent/CN204308298U/zh
Priority claimed from CN201410362312.7A external-priority patent/CN105458401B/zh
Application filed by 铁鎯电动工具有限公司 filed Critical 铁鎯电动工具有限公司
Publication of WO2016015368A1 publication Critical patent/WO2016015368A1/zh

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Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G3/00Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
    • A01G3/08Other tools for pruning, branching or delimbing standing trees
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27BSAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00Chain saws; Equipment therefor
    • B27B17/02Chain saws equipped with guide bar

Definitions

  • the invention relates to an electric chain saw, in particular to a double chain electric chain saw.
  • the electric chain saw is a traditional electric tool. It is suitable for forest logging and wood yard selection. It is also suitable for construction, shipbuilding, bridges, railways, mining and other departments. It is generally operated by a drive mechanism that drives a circulating chain cutter.
  • the existing electric chain saw adopts a single saw chain design, which is easy to be rebounded when cutting. Especially the high-saw saw, because of the longer arm, the rebound phenomenon is more serious, and the safety hazard is higher. At the same time, the rebound will accelerate the deformation of the saw chain, causing the saw chain to be elongated, which seriously affects the life of the saw chain.
  • the existing electric chain saw has a single force direction and generates a great vibration, which is difficult for the user to operate stably.
  • the present invention provides a double-chain electric chain saw, comprising: a guiding plate, wherein the guiding plate has a guiding portion, a first end of the guiding plate is fixed to the housing, a second end of the guiding plate extends outwardly, and the guiding plate has a cutting position;
  • first saw chain disposed on a periphery of the guide plate, wherein the first saw chain has a first cutting portion for cutting the workpiece at the cutting position, the first saw chain moves along the guiding portion, and has a first One direction
  • a second saw chain disposed at a periphery of the guide plate and spaced apart from the first saw chain by a safe distance to prevent toothing, wherein the second saw chain has a second cutting portion for cutting at the cutting position a workpiece, the second saw chain moves along the guiding portion, and has a second direction, the first direction is opposite to the second direction, and the first cutting portion and the second cutting portion are parallel when cutting, thereby offset a resistance that the first saw chain and the second saw chain are subjected to when cutting the workpiece;
  • a transmission unit wherein the transmission unit is fixed to the housing, the first saw chain is driven in the first direction by the driving unit, and the second saw chain is driven by the transmission unit along the second Directional movement;
  • a motor for driving the transmission unit A motor for driving the transmission unit.
  • the two saw chains move in opposite directions on the same guide plate, and the workpieces are prevented from rebounding due to mutual resistance when cutting the workpiece. It is especially used on high-saw saws to effectively prevent safety hazards.
  • the chain life is increased by delaying the rebound and delaying the chain.
  • the two chains are cut simultaneously on one workpiece, increasing the cutting speed.
  • Figure 1 is a side view of the present invention.
  • Figure 2 is a partial enlarged view of the transmission of the present invention.
  • Figure 3 is a schematic illustration of a saw chain of the present invention.
  • Figure 4 is a cross-sectional view of the saw chain of the present invention.
  • Figure 5 is an exploded view of the saw chain of the present invention.
  • Figure 6 is a schematic view of a guide of the present invention.
  • Figure 7 is a cross-sectional view taken along line A-A of the guide of the present invention.
  • Figure 8 is an exploded view of the guide of the present invention.
  • the present invention is a double-chain electric chain saw, comprising:
  • a housing 1 a housing 1 ;
  • a guide plate 2 wherein the guide plate 2 has a guiding portion, a first end of the guiding plate 2 is fixed to the housing 1, a second end of the guiding plate 2 extends outwardly, and the guiding plate has a cutting position; a saw chain 3 disposed on the guide plate 2, wherein the first saw chain 3 has a first cutting portion for cutting a workpiece at the cutting position, the first saw chain 3 moves along the guiding portion, and has a first direction;
  • a second saw chain 4 disposed on the guide plate 2 and spaced apart from the first saw chain by a safe distance to prevent toothing, wherein the second saw chain 4 has a second cutting portion for The cutting position cuts the workpiece, the second saw chain 4 moves along the guiding portion, and has a second direction, the first One direction is opposite to the second direction, and the first cutting portion and the second cutting portion are parallel when cutting, thereby canceling the resistance that the first saw chain 3 and the second saw chain 4 are subjected to when cutting the workpiece; a transmission unit 5, wherein the transmission unit 5 is fixed to the housing 1, the first saw chain 3 is driven in the first direction by the transmission unit 5, and the second saw chain 4 is in the transmission unit
  • a motor for driving the transmission unit 5 A motor for driving the transmission unit 5.
  • the two saw chains move in opposite directions on the same guide 2, and the resistance is effectively canceled when the workpiece is cut, thereby effectively preventing the rebound. It is especially used on high-saw saws to effectively prevent safety hazards. At the same time, the chain is elongated due to the prevention of bounce, which improves the life of the chain. In addition, the two chains are cut simultaneously on one workpiece, increasing the cutting speed.
  • the saw chain includes:
  • first connecting pieces 7 are located on opposite sides of the first saw chain 3 and the second saw chain 4, wherein the first connecting piece 7 has two first connecting piece holes;
  • At least one main knife 6 is disposed on part or all of the first connecting piece 7 for cutting the workpiece; a plurality of second connecting pieces 8 are located on adjacent sides of the first saw chain 3 and the second saw chain 4, The second connecting piece 8 has two second connecting piece holes, and the second connecting piece holes correspond to the first connecting piece holes;
  • At least one attachment knife 12 is disposed on part or all of the second connecting piece 8 for assisting in cutting the workpiece and preventing the first saw chain 3 and the second saw chain 4 from being toothed with each other;
  • the guiding piece 9 has two guiding piece holes, and the guiding piece holes respectively correspond to the first connecting piece hole and the second connecting piece a hole, and a through hole; and;
  • a plurality of fixing members 10 wherein the fixing member 10 is inserted into the through hole for forming the plurality of first connecting pieces 7, the plurality of second connecting pieces 8, and the plurality of guiding pieces 9 to form a chain shape.
  • the first connecting piece 7, the second connecting piece 8, and the guiding piece 9 are parallel to each other.
  • the main knife 6 is used to provide a 90% cutting effect when cutting
  • the knife 12 is used to provide a 10% cutting effect and prevent the two saw chains moving in different directions from being subjected to external pressure. phenomenon.
  • the first connecting piece 7, the second connecting piece 8, and the guiding piece 9 placed in parallel reduce the possibility of toothing.
  • the guiding portion is a first sliding slot 21 and a second sliding slot 22 which are disposed in parallel around the guiding plate 2 , the first saw chain 3 and the second The saw chain 4 moves along the first sliding slot 21 and the second sliding slot 22, respectively.
  • the guide plate 2 includes a first sprocket 23 and a second sprocket 24 respectively disposed at a second end of the guide plate 2 through a first bearing 231 and a second bearing 241, the first sprocket 23 and the second sprocket 24 mesh with the first saw chain 3 and the second saw chain 4, respectively, to reduce friction.
  • the guide plate 2 further includes a first outer side plate 25 and a second outer side plate 26, The inner side plate 27, the two inner side plates 28, and an intermediate plate 29.
  • the first inner side panel 27, the second inner side panel 28, the intermediate panel 29, the first sprocket 23, and the second sprocket 24 are secured together by bolts 210.
  • the first saw chain 3 and the second saw chain 4 move along the first chute 21 and the second chute 22 respectively during the movement.
  • the first sprocket and the second saw chain 4 are meshed to reduce friction and advance
  • the transmission unit 5 includes
  • a second gear 54 is fixed to a first end of the first transmission shaft 51, wherein the second gear 54 meshes with the first gear 53 to rotate the first transmission shaft when the motor is in operation Rotate
  • a three-gear 55 fixed to the - terminal of the second transmission shaft 52, wherein the three-gear 55 meshes with the first gear 53 to carry the second transmission shaft 52 along the first working of the motor a second rotation direction opposite to the second rotation direction; a fourth gear 56 fixed to a second end of the first transmission shaft 51, wherein the fourth gear 56 and the first saw The chain 3 is engaged to drive the first saw chain 3;
  • the first gear 53, the second gear 54, and the third gear 55 are bevel gears
  • the fourth gear 56 and the fifth gear 57 are spur gears.
  • the first saw chain 3 and the second saw chain 4 move in opposite directions on the guide 2 during cutting, effectively preventing bounce.
  • the transmission unit 5 itself has different rotation directions, so the vibrations during rotation cancel each other out, and further increase stability.
  • a preferred double-chain electric chain saw includes a switch 1 1 for controlling the motor.

Abstract

一种双链电链锯,包括:一壳体(1)、一导板(2)、一第一锯链(3)、一第二锯链(4)、一传动单元(5)、一电机;导板和传动单元固定于壳体,电机驱动传动单元(5)带动第一锯链(3)、第二锯链(4)运动;第一锯链(3)、第二锯链(4)设置在导板(2)外围,沿导板(2)的导向部运动,第二锯链(4)与第一锯链(3)间隔一安全距离,以防止打齿;第一锯链(3)具有一第一切割部,第二锯链(4)具有一第二切割部;第一锯链(3)沿第一方向运动,第二锯链(4)沿第二方向运动,第一方向与第二方向相反。

Description

双链电链锯
技术领域
本发明涉及一种电链锯, 尤其是一种双链电链锯。
背景技术
电链锯是一种传统的电动工具, 适用于林区伐木、 木场选材, 也适 用于建筑、 造船、 桥梁、 铁道、 矿山等部门。 其一般由驱动机构驱动循环 式链条刀而工作。现有的电链锯采用的是单锯链设计,切割时容易被反弹。 尤其是高枝锯, 由于力臂较长, 反弹现象更严重, 安全隐患更高。 同时, 反弹还会加速锯链的形变,使锯链被拉长,严重影响了锯链的寿命。此外, 现有的电链锯受力方向单一, 会产生极大的振动, 对于使用者来说, 难以 稳定操作。
发明内容
本发明的目的在于提供一种双链电链锯, 其切割时不会被反弹。 本发明的又一目的在于提供一种双链电链锯, 其受力均匀, 运行稳 定。
为达到以上目的, 本发明提供一种双链电链锯, 包括: 一导板, 其中, 该导板具有一导向部,该导板的一第一端固定于该壳 体, 该导板的一第二端向外延伸, 该导板具有一切割位置;
一第一锯链, 设置在该导板外围, 其中, 该第一锯链具有一第一切 割部, 用于在该切割位置切割工件, 该第一锯链沿该导向部运动, 且具有 一第一方向;
一第二锯链, 设置在该导板外围, 且与该第一锯链间隔一安全距离, 以防止打齿, 其中, 该第二锯链具有一第二切割部, 用于在该切割位置切 割工件, 该第二锯链沿该导向部运动, 且具有一第二方向, 该第一方向与 该第二方向相反, 且该第一切割部与该第二切割部在切割时平行, 从而抵 消该第一锯链和该第二锯链在切割工件时受到的阻力;
一传动单元, 其中, 该传动单元固定于该壳体, 该第一锯链在该传 动单元的驱动下沿该第一方向运动,该第二锯链在该传动单元的驱动下沿 该第二方向运动; 以及
一电机, 用于驱动该传动单元。
籍由上述之结构, 两条锯链在同一导板上向相反方向运动, 切割工 件时由于阻力的相互抵消, 有效防止了反弹。 特别用在高枝锯上, 有效防 止安全隐患。 同时, 由于防止了反弹而延缓了锯链被拉长, 提高了链条寿 命。 此外, 两条锯链同时在一个工件上切割, 提高了切割速度。
本发明的这些目的, 特点, 和优点将会在下面的具体实施方式, 附 图, 和权利要求中详细的揭露。 附图说明
图 1为本发明的侧视图。
图 2为本发明传动装置的局部放大图。
图 3为本发明锯链的示意图。
图 4为本发明锯链的剖视图。
图 5为本发明锯链的爆炸图。
图 6为本发明导板的示意图。
图 7为本发明导板的 A-A向剖视图。
图 8为本发明导板的爆炸图。
具体实施方式
请参见图 1, 本发明为一种双链电链锯, 包括:
一壳体 1 ;
一导板 2, 其中, 该导板 2具有一导向部, 该导板 2的一第一端固 定于该壳体 1, 该导板 2的一第二端向外延伸, 该导板具有一切割位置; 一第一锯链 3, 设置在该导板 2上, 其中, 该第一锯链 3具有一第 一切割部, 用于在该切割位置切割工件, 该第一锯链 3沿该导向部运动, 且具有一第一方向;
一第二锯链 4, 设置在该导板 2上, 且与该第一锯链间隔一安全距 离, 以防止打齿, 其中, 该第二锯链 4具有一第二切割部, 用于在该切割 位置切割工件, 该第二锯链 4沿该导向部运动, 且具有一第二方向, 该第 一方向与该第二方向相反, 且该第一切割部与该第二切割部在切割时平 行, 从而抵消该第一锯链 3和该第二锯链 4在切割工件时受到的阻力; 一传动单元 5, 其中, 该传动单元 5固定于该壳体 1, 该第一锯链 3 在该传动单元 5的驱动下沿该第一方向运动,该第二锯链 4在该传动单元
5的驱动下沿该第二方向运动; 以及
一电机, 用于驱动该传动单元 5。
籍由上述之结构, 两条锯链在同一导板 2上向相反方向运动, 切割 工件时由于阻力的相互抵消, 有效防止了反弹。 特别用在高枝锯上, 有效 防止安全隐患。 同时, 由于防止了反弹而延缓了锯链被拉长, 提高了链条 寿命。 此外, 两条锯链同时在一个工件上切割, 提高了切割速度。
请参见图 3, 图 4及图 5, 优选的, 该锯链包括:
复数个第一连接片 7, 位于该第一锯链 3及该第二锯链 4的相远侧, 其中, 该第一连接片 7具有两个第一连接片孔;
至少一个主刀 6设于部分或全部该第一连接片 7上,用于切割工件; 复数个第二连接片 8, 位于该第一锯链 3及该第二锯链 4的相邻侧 其中, 该第二连接片 8具有两个第二连接片孔, 该第二连接片孔与该第一 连接片孔相对应;
至少一个附刀 12, 设于部分或全部该第二连接片 8上, 用于辅助切 割工件以及防止该第一锯链 3与该第二锯链 4互相打齿;
复数个导向片 9, 使该锯链沿该导板 2的该导向部运动, 其中, 该 导向片 9位于该第一连接片 7与该第二连接片 8之间,该导向片 9具有两 个导向片孔, 该导向片孔分别对应于该第一连接片孔及该第二连接片孔, 并形成通孔; 以及;
复数个固定件 10, 其中, 该固定件 10插入该通孔, 用于使该复数 个第一连接片 7, 该复数个第二连接片 8, 及该复数个导向片 9形成链条 状。
优选的, 该第一连接片 7, 该第二连接片 8, 及该导向片 9, 互相平 行。
籍由上述之结构, 切割时, 主刀 6用于提供 90%的切割效果, 附刀 12用于提供 10%的切割效果并防止向不同方向运动的两根锯链受外部压 力而产生的打齿现象。 同时, 平行放置的该第一连接片 7, 该第二连接片 8, 及该导向片 9进一歩减少了打齿的可能。
请参见图 6, 图 7及图 8, 优选的, 该导向部为平行设在该导板 2 四周的一第一滑槽 21及一第二滑槽 22, 该第一锯链 3及该第二锯链 4分 别沿该第一滑槽 21及该第二滑槽 22运动。
优选的, 该导板 2包括一第一链轮 23及一第二链轮 24分别通过一 第一轴承 231及一第二轴承 241平行设于该导板 2的该第二端,该第一链 轮 23及该第二链轮 24分别与该第一锯链 3及该第二锯链 4啮合,以减少 摩擦。
优选的, 该导板 2进一歩包括一第一外侧板 25, 一第二外侧板 26, 内侧板 27, 二内侧板 28, 及一中间板 29。 该; 25
Figure imgf000008_0001
26, 该第一内侧板 27, 该第二内侧板 28, 该中间板 29, 该 第一链轮 23, 及该第二链轮 24通过螺栓 210固定在一起。
藉由上述之结构, 切割时, 该第一锯链 3与该第二锯链 4在运动时 分别沿该第一滑槽 21及该第二滑槽 22运动。 同时, 该第一链轮及该第二 锯链 4啮合, 以减少摩擦, 进
了振动, 使运行更加平稳
请参见图 2, 优选的, 该传动单元 5包括
传动轴 51, 其中, 该第一传动轴 51为空心;
:二传动轴 52, 其中, 该第二传动轴 52穿过该第一传动轴 51 一第一齿轮 53, 固定在该电机上;
一第二齿轮 54, 固定在该第一传动轴 51 的一第一端, 其中, 该第 二齿轮 54 与该第一齿轮 53 啮合, 以此在该电机工作时带该第一传动轴 转动方向转动;
;三齿轮 55, 固定在该第二传动轴 52 的- •端, 其中, 该; 三齿轮 55 与该第一齿轮 53 啮合, 以此在该电机工作时带该第二传动轴 52沿一第二转动方向转动, 该第一转动方向与该第二转动方向相反; 一第四齿轮 56, 固定在该第一传动轴 51 的一第二端, 其中, 该第 四齿轮 56与该第一锯链 3啮合, 以驱动该第一锯链 3 ; 以及
五齿轮 57, 固定在该第二传动轴 52的一第二端, 其中, 该第五 齿轮 57与该第二锯链 4啮合, 以驱动该第二锯链 4。
优选的, 该第一齿轮 53, 该第二齿轮 54, 及该第三齿轮 55为锥齿 轮, 该第四齿轮 56及该第五齿轮 57为直齿轮。
藉由上述之结构, 切割时, 该第一锯链 3与该第二锯链 4在该导板 2上向相反方向运动, 有效防止了反弹。 同时, 该传动单元 5本身存在不 同的转动方向, 故转动时的振动会互相抵消, 进一歩增加了稳定性。
优选的双链电链锯, 该进一歩包括一开关 1 1, 用于控制该电机。 通过上述实施例, 本发明的目的已经被完全有效的达到了。 熟悉该 项技艺的人士应该明白本发明包括但不限于附图和上面具体实施方式中 描述的内容。任何不偏离本发明的功能和结构原理的修改都将包括在权利 要求书的范围中。

Claims

权 利 要 求 书
1.一种双链电链锯, 包括:
一壳体; 一导板, 其中, 该导板具有一导向部,该导板的一第一端固定于该壳 体, 该导板的一第二端向外延伸, 该导板具有一切割位置;
一第一锯链, 设置在该导板外围, 其中, 该第一锯链具有一第一切 割部, 用于在该切割位置切割工件, 该第一锯链沿该导向部运动, 且具有 一第一方向;
一第二锯链, 设置在该导板外围, 且与该第一锯链间隔一安全距离, 以防止打齿, 其中, 该第二锯链具有一第二切割部, 用于在该切割位置切 割工件, 该第二锯链沿该导向部运动, 且具有一第二方向, 该第一方向与 该第二方向相反, 且该第一切割部与该第二切割部在切割时平行, 从而抵 消该第一锯链和该第二锯链在切割工件时受到的阻力;
一传动单元, 其中, 该传动单元固定于该壳体, 该第一锯链在该传 动单元的驱动下沿该第一方向运动,该第二锯链在该传动单元的驱动下沿 该第二方向运动; 以及 一电机, 用于驱动该传动单元。
2.根据权利要求 1的一种双链电链锯, 其中, 该锯链包括: 复数个第一连接片, 位于该第一锯链及该第二锯链的相远侧, 其中, 该第一连接片具有两个第一连接片孔; 至少一个主刀, 设于部分或全部该第一连接片上, 用于切割工件; 复数个第二连接片, 位于该第一锯链及该第二锯链的相邻侧, 其中, 该第二连接片具有两个第二连接片孔,该第二连接片孔与该第一连接片孔 相对应;
至少一个附刀, 设于部分或全部该第二连接片上, 用于辅助切割工 件以及防止该第一锯链与该第二锯链互相打齿;
复数个导向片, 使该锯链沿该导板的该导向部运动, 其中, 该导向 片位于该第一连接片与该第二连接片之间, 该导向片具有两个导向片孔, 该导向片孔分别对应于该第一连接片孔及该第二连接片孔, 并形成通孔; 以及;
复数个固定件, 其中, 该固定件插入该通孔, 用于使该复数个第一 连接片, 该复数个第二连接片, 及复数个该导向片形成链条状。
3.根据权利要求 2 的一种双链电链锯, 其中, 该第一连接片, 该第 二连接片, 及该导向片互相平行。
4.根据权利要求 1 的一种双链电链锯, 其中, 该导向部为平行设在 该导板四周的一第一滑槽及一第二滑槽,该第一锯链及该第二锯链分别沿 该第一滑槽及该第二滑槽运动。
5.根据权利要求 4的一种双链电链锯, 其中, 该导板 2包括一第一 链轮及一第二链轮分别通过一第一轴承及一第二轴承平行设于该导板的 该第二端, 该第一链轮及该第二链轮分别与该第一锯链及该第二锯链啮 合, 以减少摩擦。
6.根据权利要求 5 的一种双链电链锯, 其中, 该导板进一歩包括一 该第一外侧板, 该第二外侧板, 该第一内侧板, 该第二内侧板, 该中间板, 该第一链轮, 及该第二链轮通过螺栓固定在一起。
7.根据权利要求 1的一种双链电链锯, 其中, 该传动单元包括: 一第一传动轴, 其中, 该第一传动轴为空心;
一第二传动轴, 其中, 该第二传动轴穿过该第一传动轴;
一第一齿轮, 固定在该电机上;
一第二齿轮, 固定在该第一传动轴的一第一端, 其中, 该第二齿轮 与该第一齿轮啮合,以此在该电机工作时带该第一传动轴沿一第一转动方 向转动;
一第三齿轮, 固定在该第二传动轴的一第一端, 其中, 该第三齿轮 与该第一齿轮啮合,以此在该电机工作时带该第二传动轴沿一第二转动方 向转动, 该第一转动方向与该第二转动方向相反;
一第四齿轮, 固定在该第一传动轴的一第二端, 其中, 该第四齿轮 与该第一锯链啮合, 以驱动该第一锯链; 以及
一第五齿轮, 固定在该第二传动轴的一第二端, 其中, 该第五齿轮 与该第二锯链啮合, 以驱动该第二锯链。
8.根据权利要求 7 的一种双链电链锯, 其中, 该第一齿轮, 该第二 齿轮, 及该第三齿轮为锥齿轮, 该第四齿轮及该第五齿轮为直齿轮。
9.根据权利要求 1 的一种双链电链锯, 进一歩包括一开关, 用于控 制该电机。
PCT/CN2014/085165 2014-07-28 2014-08-26 双链电链锯 WO2016015368A1 (zh)

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CN201410362312.7A CN105458401B (zh) 2014-07-28 2014-07-28 双链电链锯
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CN112106544A (zh) * 2020-09-07 2020-12-22 张国华 一种市政绿化带植物剪切收集车

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CN109105029A (zh) * 2018-07-27 2019-01-01 芜湖玖荣生物科技有限公司 一种花卉修剪工具
CN112106544A (zh) * 2020-09-07 2020-12-22 张国华 一种市政绿化带植物剪切收集车

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