WO2012031571A1 - 除草工具 - Google Patents

除草工具 Download PDF

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Publication number
WO2012031571A1
WO2012031571A1 PCT/CN2011/079558 CN2011079558W WO2012031571A1 WO 2012031571 A1 WO2012031571 A1 WO 2012031571A1 CN 2011079558 W CN2011079558 W CN 2011079558W WO 2012031571 A1 WO2012031571 A1 WO 2012031571A1
Authority
WO
WIPO (PCT)
Prior art keywords
weeding tool
sleeve
working head
spiral portion
tool according
Prior art date
Application number
PCT/CN2011/079558
Other languages
English (en)
French (fr)
Inventor
格哈雷·格雷厄姆
布朗·沃伦
索默·哈利
Original Assignee
苏州宝时得电动工具有限公司
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 CN2010102862743A external-priority patent/CN102396303A/zh
Priority claimed from CN201010286531.3A external-priority patent/CN102396305B/zh
Priority claimed from CN201010286526.2A external-priority patent/CN102396304B/zh
Application filed by 苏州宝时得电动工具有限公司 filed Critical 苏州宝时得电动工具有限公司
Publication of WO2012031571A1 publication Critical patent/WO2012031571A1/zh

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Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B39/00Other machines specially adapted for working soil on which crops are growing
    • A01B39/12Other machines specially adapted for working soil on which crops are growing for special purposes, e.g. for special culture
    • A01B39/18Other machines specially adapted for working soil on which crops are growing for special purposes, e.g. for special culture for weeding
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B1/00Hand tools
    • A01B1/16Tools for uprooting weeds

Definitions

  • the invention relates to a weeding tool.
  • One method is direct manual removal.
  • the operator's hand grasps the branches and leaves of the weeds, and then pulls the roots out of the ground.
  • manual removal is laborious and inefficient.
  • the soil that is carried out can easily splash on the operator's feet and soil the operator.
  • Another method is to use a hand tool such as a shovel or a shovel to shovel the weed roots, or a trident type hand tool as disclosed in U.S. Patent No. 4,819,736, which has a pointed fork-like structure for easy operation.
  • an object of the present invention to provide a weeding tool that is easy to operate and labor-saving.
  • One of the objects of the present invention is to provide a weeding tool which is easy to clean, labor-saving, and does not stain the operator.
  • One of the objects of the present invention is to provide a weeding tool that is easy to clean and does not affect the working of the working head.
  • a weeding tool for removing weeds a weeding tool comprising a casing; a motor housed in the casing; a motor coupled to the motor and extending along the longitudinal axis An output shaft; a working head coupled to the output shaft, the working head spirally extending along the axis; and a switch that controls the rotation of the motor.
  • the switch controls the motor to rotate in a forward direction to cause the working head to move clockwise about the axis; the switch controls the motor to rotate in the opposite direction to cause the working head to move counterclockwise about the axis.
  • the rotational speed of the working head is 200 to 400 revolutions per minute.
  • the weeding tool further comprises a speed governing mechanism that controls the rotational speed of the working head.
  • the weeding tool further comprises a direct current power source that powers the motor.
  • the direct current power source is a lithium battery pack.
  • the DC power supply is rated for a voltage range of 10 ⁇ to 36 ⁇ .
  • the weeding tool comprises a handle for gripping.
  • the weeding tool has a sleeve that is sleeved on the output shaft and is telescopic, and the handle is mounted on the sleeve.
  • the weeding tool further comprises an extension rod connecting the housing, the handle being mounted on the extension rod.
  • a weeding tool for removing weeds comprising a power source for providing power, an output shaft connecting the power source and extending along the longitudinal axis a working head coupled to the output shaft, the working head is rotatable about the axis, the weeding tool further includes a stripping assembly, and the rotary motion of the working head drives the stripping assembly to linearly move along the axis.
  • the working head extends helically along the axis.
  • the working head working head includes a spiral portion having a spiral direction which is a clockwise rotation in the forward spiral direction and a counterclockwise movement in the reverse spiral direction.
  • the spiral outer diameter of the spiral portion is fixed
  • the end of the helix is a tapered tip.
  • the spiral portion drives the peeling assembly to move in the first direction; when the spiral portion rotates in the counterclockwise direction, the spiral portion drives the peeling assembly to move in a direction opposite to the first direction.
  • the stripping assembly includes a stripper that is driven by the helical portion to move along the axis, the stripper having a mating portion that mates with the helical portion, the mating portion being perpendicular to the axis.
  • the mating portion has an arcuate profile.
  • the mating portion has a helical profile.
  • the stripper has a first contact surface and a second contact surface respectively located on both sides of the mating portion, and when the spiral portion rotates in a clockwise direction, the first contact surface is in contact with the surface of the spiral portion; when the spiral portion is counterclockwise When the direction is rotated, the second contact surface is in contact with the surface of the spiral portion.
  • the first contact surface has a first contact point in contact with the surface of the spiral portion
  • the second contact surface has a second contact point in contact with the surface of the spiral portion, the first contact point and the second contact point being symmetric about the axis .
  • a weeding tool for removing weeds comprising a power source for supplying power, an output shaft connecting the power source and extending along a longitudinal axis, and an output
  • the working head of the shaft is connected, the working head is rotatable about the longitudinal axis, and the weeding tool further comprises a peeling assembly that can be driven by the working head.
  • the working head drives the peeling assembly to move when the stripping assembly is in a position between the first position and the second position.
  • the working head comprises a spiral extending helically along the axis, the peeling assembly is in the first position when the working head is in contact with one of the ends of the spiral; and the peeling assembly is in the working position when the working head is in contact with the other end of the spiral Second position.
  • the weeding tool comprises a sleeve for accommodating the output shaft, and the first gear sleeve and the second gear sleeve are arranged at intervals along the axial direction between the sleeve and the output shaft, the first gear sleeve and the second gear sleeve The movement of the peeling assembly in the axial direction can be restricted.
  • the stripping assembly comprises a sleeve around the first gear sleeve and the second gear sleeve, and the sleeve is sleeved between the sleeve and the output shaft, and is disposed between the sleeve and the first gear sleeve.
  • First elastic part, around the axis A second elastic member is disposed between the sleeve and the second gear sleeve, and the first elastic member and the second elastic member respectively maintain the peeling assembly in contact with the spiral portion.
  • the stripping assembly includes a slider that is fixedly coupled to the sleeve, the slider being located on the surface of the sleeve and moving along the axis.
  • the surface of the sleeve has a chute extending along the longitudinal axis, the pin passing through the chute and being movable along the chute is coupled to the slider at one end and the other end is coupled to the sleeve.
  • the length of the chute is greater than or equal to the distance between the first position and the second position.
  • the waist portion around the sleeve has an annular groove around the longitudinal axis
  • the slide member has perforations
  • the pin shaft connects the slider to the sleeve through the perforation and the annular groove.
  • the stripping assembly further includes a stripper in contact with the working head, the stripper being fixedly coupled to the slider by the connecting rod.
  • the invention has the beneficial effects that: the working head of the weeding tool is driven by the power source, so that the operation is convenient and the weeding efficiency is high.
  • a beneficial effect of the present invention is that the linear movement of the peeling assembly along the axis is facilitated by the rotary motion of the working head about the axis, thereby facilitating the operation, and the cleaning working head is convenient and does not get dirty.
  • One advantageous effect of the present invention is that the working head can remain rotated while the stripping assembly is in the first or second position, while the stripping assembly is not driven by the working head and avoids affecting the working of the working head. Attached sleep instructions
  • FIG. 1 is a schematic illustration of a weeding tool in accordance with an embodiment of the present invention.
  • Figure 2 is a cross-sectional view of the weeding tool of Figure 1 taken along line A-A.
  • Fig. 3 is an enlarged schematic view showing a portion A of the weeding tool shown in Fig. 2.
  • Fig. 4 is an enlarged schematic view showing a portion B of the weeding tool shown in Fig. 2.
  • Figure 5 is an enlarged schematic view of the power end of the weeding tool shown in Figure 1.
  • Figure 6 is a schematic illustration of the power end of the weeding tool of the second embodiment of the present invention.
  • Figure 7 is an enlarged schematic view of the working end of the weeding tool shown in Figure 1.
  • Figure 8 is a front elevational view of the working head of the weeding tool of Figure 1.
  • Figure 9 is a schematic illustration of the stripping assembly of the weeding tool of Figure 1.
  • Figure 10 is a schematic illustration of the stripping assembly of the weeding tool of the embodiment of the spear of the present invention.
  • Figure 1 is a schematic illustration of a stripping assembly of a weeding tool of a fourth embodiment of the present invention.
  • Figure 12 is an enlarged cross-sectional view showing a portion C of the peeling assembly of the weeding tool of the embodiment of the spear of the present invention.
  • Figure 13 is a schematic exploded view of the stripping assembly of the weeding tool of the embodiment of the spear of the present invention.
  • Figure 14 is a schematic illustration of the portion of the sleeve and the slider removed from the working end region of the weeding tool of Figure 1.
  • Figure 15 is a schematic view showing a portion of the sleeve and the slider removed from the working end region of the weeding tool of the fifth embodiment of the present invention.
  • Figure 16 is a schematic view showing the portion of the first gear cover of the weeding tool shown in Figure 1 with the portion removed.
  • Figure 17 is a schematic view of the clockwise rotation of the working head of the weeding tool shown in Figure 1.
  • Figure 18 is a schematic view showing the counter-clockwise rotation of the working head of the weeding tool shown in Figure 1.
  • Figure 19 is a view showing the peeling assembly of the weeding tool shown in Figure 1 reaching the first position.
  • Figure 20 is a view showing the peeling assembly of the weeding tool shown in Figure 1 reaching the second position.
  • the weeding tool 1 extends in the longitudinal direction, and includes a sleeve 2 extending in the longitudinal direction, a power source 4 for supplying power, and a working head 5 for grasping weeds. .
  • the inside of the sleeve 2 has a receiving space 21, and the cross section of the sleeve 2 may be circular or square or triangular.
  • the housing space 21 of the sleeve 2 has an output shaft 3, and the sleeve 2 is sleeved on the output shaft 3.
  • the output shaft 3 has a longitudinal axis 30 which extends in the same direction as the longitudinal direction of the weeding tool 1, and the axis 30 coincides with the central axis of the sleeve 2.
  • the output shaft 3 is rotatable about the axis 30 and includes a selectively operable axis 30 that rotates clockwise or about the axis 30 in a counterclockwise direction.
  • One end of the output shaft 3 is a power end 3 1, the other end is a working end 32, a power end 3 1 is used to connect the power source 4, and a working end 32 is used to connect the working head 5.
  • a bearing 23 is provided at the end of the sleeve 2 near the end of the power end 31, and the bearing 23 is located in the accommodating space 21 between the sleeve 2 and the output shaft 3.
  • the bearing 23 has a certain thickness in the direction of the axis 30.
  • the bearing 23 mainly supports the action of the power end 3 1 .
  • the outer contour of the bearing 23 cooperates with the section of the sleeve 2 such that the bearing 23 is in tight engagement with the sleeve 2 such that there is no relative movement between the two.
  • the bearing 23 and the sleeve 2 may also be Uranus or other common fixed connections.
  • a bearing hole 23 1 is opened in the center of the bearing 23.
  • the power end 3 1 of the output shaft 3 can pass through the bearing hole 23 1 from the accommodating space 21 and be connected to the power source 4.
  • the power end 3 1 is loosely fitted with the bearing bore 23 1 such that the rotation of the output shaft 3 including the power end 3 1 is not affected by the bearing 23.
  • the bearing 23 can in turn limit the radial movement of the power end 3 1 along the sleeve 2, thus maintaining the stable working state of the power end 3 1 and supporting the power end 3 1 .
  • the power end 3 1 and the bearing bore 23 1 may be a common spherical ball contact fit.
  • a bearing 24 is also included at the other end of the sleeve 2 near the working end 32.
  • the bearing 24 functions similarly to the bearing 23, and the bearing 24 cooperates with the output shaft 3 and the sleeve 2 in a manner similar to the bearing 23.
  • the bearing 24 is tightly fitted with the sleeve 2, and the bearing 24 has a bearing hole. Let the working end 32 or the working head 5 pass through.
  • the working end 32 of the output shaft 3 is coupled to the working head 5 through a bearing 24.
  • the working end 32 can be located within the receiving space 21 and the working head 5 is coupled to the working end 32 through the bearing 24.
  • the power source 4 for supplying power includes a housing 41 in which the housing 41 is housed, and a motor 42 for supplying power.
  • the motor 42 is in a driveable connection with the power end 3 1 of the output shaft 3 to transmit power to the output shaft 3 for rotation.
  • the power source 4 also has a switch 43, which can be provided on the housing 41 for ease of operation.
  • the switch 43 is used to control the rotation of the motor 42.
  • the switch 43 has at least three control gear positions.
  • the first gear is to control the motor 42 to rotate in the forward direction, so that the output shaft 3 rotates clockwise about the axis 30, and the first gear controls the motor 42 to rotate in the reverse direction.
  • the output shaft 3 is rotated counterclockwise about the axis 30, and the first step is to stop the rotation of the motor 42 in an inoperative state.
  • the switch 43 can have a variety of specific forms, such as a switch type, a knob type, and the like.
  • the switch 43 can control the motor 42 to be turned on or off, and can also control the output shaft 3 to rotate clockwise and counterclockwise about the axis 30, respectively.
  • the switch 43 may be provided with a speed regulating mechanism (not shown) for conveniently adjusting the rotational speed of the working head to adjust the working of the working heads adapted to different sizes.
  • the power source 4 can include various forms of power sources, such as a battery pack for DC power drive, and the battery pack can have a charging function.
  • the battery pack can be a lithium battery pack. If the weeding tool 1 is not used enough, the battery pack can be removed for charging. If the weeding tool 1 is equipped with a plurality of battery packs, one battery pack can be attached to the weeding tool 1 to operate when one battery pack is charged, and then the two battery packs are interchanged. This makes the weeding tool 1 work for a long time, which is very convenient and quick. In order to achieve a proper working state for the working head 5, a certain rotational speed is required.
  • the rated voltage of the battery pack is required to be 10 ⁇ or more.
  • the rated voltage of the battery pack is preferably 36 ⁇ or less.
  • the rated voltage can also be set at 36 ⁇ or more.
  • the battery pack can be rated for 10.8 ⁇ , 14.4 ⁇ , 18 ⁇ , and the like.
  • the weeding tool 1 can be electrically connected to an external AC power source to provide power to the motor 42 by using an AC power source.
  • the weeding tool 1 is also included.
  • the handle 7 that is held.
  • the handle 7 can be fixedly mounted on the housing 41 with a grip for gripping.
  • the handle can be mounted on the sleeve 2
  • the sleeve 2 can be telescoped along the axis 30 to change the length to achieve a more comfortable holding position during operation.
  • the weeding tool 1 can also be provided with an extension rod 8 for use in different working environments.
  • the extension rod 8 can be arranged on the casing 41 or on the sleeve 2.
  • the extension axis of the extension rod 8 can be parallel or non-parallel to the axis 30 of the output shaft 3, and the handle 7 can be arranged on the extension rod 8, so that the operator can be conveniently operated.
  • the working head 5 includes a joint portion 5 1 and a spiral portion 52.
  • the joint portion 5 1 can be fixedly coupled to the working end 32.
  • Fixed connections may include other common connections such as electrical welding. This keeps the rotational motion of the working head 5 in sync with the rotational motion of the output shaft 3.
  • the joint portion 5 1 has a substantially hollow frustum shape, extends along the axis 30 and tapers in the direction of the spiral portion 52.
  • the working end 32 can also be fixed with other forms of the joint portion 5 1 of the working head 5.
  • the working end 32 and the joint portion 51 are both designed to have an iHJ convex structure to be sleeve-fitted. Or use a locking element to fix the two.
  • the spiral portion 52 of the working head 5 is integrally connected to the joint portion 5 1 or fixedly connected by other common means such as welding.
  • the helical portion 52 is machined into a spiral shape from a steel wire that extends helically along the axis 30.
  • the inner diameter d of the steel wire itself is approximately 6 mm.
  • One end end 53 of the wire is fixedly coupled to the joint portion 5 1, and the other end of the wire is sharpened to form a pointed end 54 having a sharp bevel and a sharp edge, so that the spiral portion 52 can be more easily entered into the ground.
  • the spiral radius of the spiral portion 52 is fixed, and therefore the spiral portion 52 has a substantially cylindrical structure.
  • the spiral outer diameter D of the spiral portion 52 is approximately 36 mm.
  • the helical radius of the helical portion 52 can also be set to be unequal, such as a gradual change in radius, such that the helical portion 52 is generally conical or inverted conical in shape.
  • the spirals of the spiral portion 52 have a certain pitch therebetween, rather than being spaced apart without being spaced, so that the spiral portion 52 can be drilled into the ground more conveniently.
  • the pitch L of the spiral portion 52 is about 25 mm.
  • the spiral portion 52 is made of a rigid material.
  • the material of the spiral portion 52 is a hard material such as stainless steel or carbon steel.
  • the power source 4 can make the working head 5 rotate into the ground via the output shaft 3.
  • the spiral portion 52 surrounds the weed root during the rotation and the working head 5 is then pulled back to the ground. Remove the weeds and dirt attached to the work head 5.
  • the weeding tool 1 further includes a peeling member 6.
  • the stripping assembly 6 is located adjacent the working end 32 of the output shaft 3.
  • the peeling assembly 6 is linearly movable in the direction of the axis 30 by the rotational motion of the working head 5 for cleaning and removing the dirt or weed attached to the working head 5 from the working head 5.
  • the peeling assembly 6 mainly includes a slider 61, a stripper 62, a connecting rod 63, and a winding sleeve 64.
  • the slider 61 has a hollow cylindrical structure, and the slider 61 is sleeved on the outer surface 200 of the sleeve 2 and is movable up and down in the direction of the axis 30.
  • a bushing 64 is provided in the accommodating space 21 of the sleeve 2, and is disposed between the output shaft 3 and the sleeve 2 around the bushing 64 and between the bearing 23 and the bearing 24.
  • the sleeve 64 is sleeved on the output shaft 3, and a through hole 641 is formed in the center of the shaft 30 to allow the output shaft 3 to pass through.
  • the sleeve 64 has a certain length along the axis 30 direction.
  • the side waist 643 around the sleeve 64 has an annular groove 642 that surrounds the axis 30 of the output shaft 3.
  • the annular groove 642 is recessed inward to have a certain depth.
  • the width of the annular groove 642 can accommodate substantially the width of the bolt or pin.
  • the annular groove 642 is connected to the inner surface 201 of the sleeve 2.
  • the annular groove 642 is provided to facilitate mechanical connection of the bushing 64 to other components.
  • the annular groove 642 may not be disposed on the sleeve 64, but a blind hole 642 ' may be disposed in two opposite directions along the radial direction of the axis 30 on the side of the sleeve 64. , as shown in Figure 15.
  • the blind hole 642' has a certain length extending in the radial direction, and one end of the blind hole 642' is connected to the inner surface 201 of the sleeve 2.
  • the blind holes 642' are symmetrically arranged along the axis 30.
  • the blind holes 642' may also be arranged in an asymmetrical form, such as at 90 degrees.
  • the number of blind holes 642' is not limited to two, and it is also possible to provide one, three or more, for example, three blind holes 642 each of 120 degrees or four blind holes of 90 degrees each other. 642 '.
  • a sleeve 25 is provided on the sleeve 2, and the chute 25 extends in the direction of the axis 30 to have a certain length.
  • the width of the chute 25 is substantially greater than the width of the pin or bolt or other fastener so that the pin or bolt passes through the chute 25.
  • the chute 25 corresponds to the annular groove 642 around the sleeve 64.
  • the through groove 25 is in communication with the annular groove 642.
  • the sleeve 2 has two corresponding chutes 25, the two chutes 25 being parallel to each other and the two chutes 25 being coplanar with the axis 30.
  • FIG. 14 there is a perforation 61 1 on the slider 61, and a perforation 61 1 is provided along the axis 30. Radial in two opposite directions.
  • the through hole 61 1 has a certain length.
  • the sliding member 61 is sleeved on the sleeve 2, one end of the through hole 61 1 communicates with the sliding groove 25 on the sleeve 2; the other end of the through hole 61 1 passes through
  • the slider 61 is in communication with the external environment.
  • the annular groove 642, the through groove 25 and the through hole 61 1 are integrally connected.
  • the pin 65 can be fixedly connected by a fixing member such as a pin 65 through the through hole 61 1 on the sliding member 61, the sliding groove 25 on the sleeve 2 and the annular groove 642 on the sleeve 64 from the external environment.
  • the sleeve 64 and the slider 61 are also subjected to a certain limit of the chute 25.
  • the slider 61 can drive the pin 65 to move in two opposite directions of the axis 30 in the chute 25, while the pin 65 drives the sleeve 64 in the direction of the axis 30.
  • the accommodating space 21 of the sleeve 2 moves, and the slider 61 moves in the direction of the axis 30 on the surface of the sleeve 2.
  • the sliding groove 25 has a certain length to restrict the movement of the pin 65, the movement of the slider 61 and the sleeve 64 in the direction of the axis 30 is also limited.
  • other fasteners may be employed.
  • threads may be provided in the annular groove 642 and the perforations 61 1 to which the annular groove 642, the chute 25 and the perforations 61 1 are screwed.
  • the connecting rod 63 is disposed between the slider 61 and the stripper 62.
  • the connecting rod 63 mainly functions to connect the slider 61 and the stripper 62.
  • the connecting rod 63 extends substantially in the direction of the parallel axis 30, one end of which is fixedly coupled to the slider 61, and the other end of which is fixedly coupled to the stripper 62.
  • the connecting rod 63 is located outside the sleeve 2.
  • the two connecting rods 63 are symmetrical along the axis 30, and the distance between the connecting rod 63 and the axis 30 is greater than the outer diameter D of the spiral portion 52, so that the connecting rod 63 does not touch the spiral portion 52 so that it does not obstruct the spiral portion. 52 sports.
  • the connecting rod 63 may be integrally formed with the slider 61 and the stripper 62, or may be formed by other conventional fixed connection means such as screw locking.
  • the stripper 62 of the peeling assembly 6 is located near the spiral portion 52 of the working head 5.
  • the stripper 62 generally has a working plane 620 that is generally perpendicular to the axis 30 of the output shaft 3.
  • the stripper 62 has a fitting portion 621 that cooperates with the surface of the spiral portion 52 on the working plane 620.
  • the mating portion 621 is a semi-circular notch having a semicircular arc with a radius slightly larger than the helical outer diameter R of the helical portion 52.
  • the notch formed by the fitting portion 621 can accommodate the partial spiral portion 52 to pass therethrough, and the surface of the spiral portion 52 is kept in engagement with the contour of the fitting portion 621 when passing therethrough.
  • the engaging portion 621 is also a substantially semi-circular notch having a spiral shape extending in the direction of the axis 30. Simultaneously, Its helical profile has a toothed structure 626. The notch formed by the engaging portion 621 can also accommodate the partial spiral portion 52 to pass therethrough.
  • the contour of the fitting portion 621 and the surface of the spiral portion 52 are made larger, and the toothed structure 626 is more effective in peeling off the dirt and weed from the spiral portion 52 of the peeler 62.
  • the stripper 62 may also be a flat plate having an arcuate notch.
  • the purpose of the stripper 62 is to cause the helical portion 52 to contact the stripper 62 during rotation to create a frictional force in the direction of the axis 30. It should be noted that, as shown in FIG. 17 and FIG. 18, the stripper 62 has a first side 622 and a second side 623 opposite thereto on both sides of the working plane 620.
  • the first side 622 faces the tip end 54 of the working head 5, and the second side 623 faces the power source 4.
  • the first side 622 of the stripper 62 contacts the surface of the helical portion 52 and creates a first contact point 624 on the first side 622;
  • the second side 623 comes into contact with the surface of the spiral portion 52 and produces a second contact point 625 on the second side 623.
  • the first contact point 624 and the second contact point 625 are not on the axis 30, but are offset from the axis 30, respectively, but the first contact point 624 and the second contact point 625 are symmetrically disposed relative to the axis 30.
  • the spiral portion 52 of the working head 5 is designed to be spirally extended in the direction of the axis 30, so that the spiral portion 52 has a spiral direction about the axis 30.
  • the spiral direction is a clockwise direction from the power source 4 to the working head 5 along the axis 30 as shown in Fig. 1.
  • the spiral portion 52 can be designed to have a spiral direction Hour direction.
  • the spiral portion 52 of the working head 5 when the output shaft 3 is rotated clockwise in the direction of its spiral, the spiral portion 52 of the working head 5 also rotates clockwise. Since the spiral portion 52 rotates clockwise, with the spiral portion 52 as a reference frame, the stripper 62 rotates counterclockwise with respect to the spiral portion 52. As shown in Fig.
  • the first side surface 622 of the stripper 62 is in contact with the spiral surface of the spiral portion 52, and a friction force is generated to push the stripper 62 to the power source 4 along the direction of the arrow shown in Fig. 17, that is, along the axis 30.
  • the direction of movement is generated to push the stripper 62 to the power source 4 along the direction of the arrow shown in Fig. 17, that is, along the axis 30. The direction of movement.
  • the spiral portion 52 when the spiral portion 52 is rotated against the spiral direction, that is, when the spiral portion 52 is rotated counterclockwise, the spiral portion 52 is used as a reference system, and the peeling device 62 corresponds to a clockwise movement.
  • the second side 623 of the stripper 62 is now in contact with the helical surface of the helical portion 52, and a frictional force is generated to push the stripper 62 in the direction of the arrow shown, i.e., along the axis 30 toward the helical portion 52.
  • the tip 54 moves in the direction.
  • the stripper 62 and the slider 61 are fixedly connected by the connecting rod 63, so the movement of the stripper 62 drives the entire stripping assembly 6 to the direction of the working head 5 or the direction of the power source 4 along the axis 30. Linear motion.
  • the linear motion of the stripper 62 is stopped and the spiral portion 52 can still be driven to rotate clockwise by the power source 4, and the position where the peeling member 6 is located is the first position 1 1 as shown in Fig. 19.
  • the spiral portion 52 is rotated counterclockwise, the stripper 62 is moved toward the tip end 54 of the working head 5.
  • the contact of the helical portion 52 with the stripper 62 is at the tip end 54 of the helical portion 52, at which point the helical portion 52 does not create a frictional force against the stripper 62 that continues to advance its advancement. Therefore, the stripper 62 is restricted from moving within a small interval.
  • the linear motion of the stripper 62 is stopped and the spiral portion 52 can still be rotated counterclockwise, and the position where the peeling member 6 is located at this time is the second position 12 as shown in Fig. 20.
  • the peeling assembly 62 is between the first position 1 1 and the second position 12
  • the working head 5 generates a friction force against the stripper 62 to drive the stripper 62 to move.
  • the distance between the first position 1 1 and the second position 12 is 10 cm.
  • Such a distance setting makes the pit formed by the working head 5 drilling into the ground not too deep and too deep, and the weed can be pulled out. At the same time avoid harm to the land. It is worth noting that the distance between the first position 1 1 and the second position 12 is matched to the length of the chute 25 of the sleeve 2.
  • the first gear cover 26 and the second gear cover 27 are further spaced apart in the direction of the axis 30 in the accommodating space 21 of the sleeve 2, and the first gear cover 26 and The second range sleeve 27 can function to limit the movement of the peeling assembly 6.
  • the first range sleeve 26 and the second range sleeve 27 are also disposed between the sleeve 2 and the output shaft 3, respectively.
  • the first range sleeve 26 and the second range sleeve 27 are located on either side of the sleeve 64 and are located between the bearing 23 and the bearing 24. As shown in FIGS.
  • the center of the first range cover 26 has a first through hole 263 through which the output shaft 3 can pass. Similar to the winding sleeve 64, the waist of the first range sleeve 26 has an annular groove 261 around which the annular groove 261 is disposed. The width of the annular groove 261 can accommodate the width of the pin or bolt or other fastener.
  • a positioning hole 20 is provided at a position corresponding to the annular groove 261 on the surface of the sleeve 2 to connect the annular groove 261 and the positioning hole 20.
  • the first pin 262 can be sequentially fixed through the positioning hole 20 and the annular groove 261.
  • first range sleeve 26 and the sleeve 2 are connected in a relatively fixed position, and the first range sleeve 26 cannot move in the direction of the axis 30.
  • the second range sleeve 27 is similar to the case of the first range sleeve 26, and is also fixedly connected to the sleeve 2 by the pin shaft, and will not be described here.
  • the present invention is not limited to the manner in which the pin shaft is fixedly connected to the gear sleeve and the sleeve, and can also be connected by a concave-convex structure, a screw lock, or the like.
  • a first elastic member 28 is disposed between the first range sleeve 26 and the surrounding sleeve 64.
  • the first elastic member 28 is disposed around the output shaft 3 and is located between the output shaft 3 and the sleeve 2.
  • the distance between the first gear sleeve 26 and the surrounding sleeve 64 is slightly greater than the free length of the first elastic member 28.
  • both ends of the first elastic member 28 belong to the free end.
  • the first elastic member 28 When the first elastic member 28 is compressed, it provides an elastic restoring force to the sleeve 64.
  • the second resilient member 29 is disposed between the second range sleeve 27 and the sleeve 64 and is also located between the output shaft 3 and the sleeve 2. Both ends of the second elastic member 29 also belong to the free end.
  • the sleeve 64 moves toward the second gear sleeve 27 to reduce the distance between the two, the one end abuts against the second gear sleeve 27, The other end can abut against the sleeve 64.
  • both ends of the elastic member may be fixedly connected to the gear sleeve at one end, and the other end is fixedly connected to the sleeve 64; or one end of the elastic member belongs to the free end, and the other end is fixedly connected to the corresponding one.
  • the first elastic member 28 functions as follows: When the stripper 62 is at the first position 1 1 , the distance between the sleeve 64 and the first gear sleeve 26 is smaller than the free length of the first elastic member 28, so the first elasticity The piece 28 is in a compressed state.
  • the first resilient member 28 will produce a thrust about the sleeve 64 in the direction of the axis 30 toward the tip end 54 of the working head 5, keeping the stripper 62 in contact with the helical portion 52 of the working head 5, avoiding the occurrence of the stripper 62 just in the helical portion 52.
  • the situation within the gap of the spiral spacing Similarly, the second elastic member 29 functions to generate a thrust in the direction of the axis 30 toward the power source 4 when the stripper 62 is in the second position 12, keeping the stripper 62 in contact with the spiral portion 52, preventing the stripper 62 from being located.
  • the spiral portion 52 has a spirally spaced gap.
  • the working process of the weeding tool 1 is described in detail below.
  • the working head 5 is first placed on the ground S after being aligned with the weeds, and at this time, the entire peeling unit 6 is also located on the ground.
  • the power source 4 is activated, the spiral portion 52 of the working head 5 is rotated in the spiral direction by the output shaft 3, and the spiral portion 52 is gradually drilled into the ground until the entire spiral portion 52 is submerged, and in the process, the weeding assembly
  • the stripper 62 of 6 is moved upward in the direction of the power source 4 along the axis 30 by the frictional force of the spiral portion 52.
  • the stripper 62 is always on the ground throughout the process.
  • the stripper 62 When the entire spiral portion 52 is submerged, the stripper 62 is in the first position 1 1 . At this time, the switch 43 controls the working head 5 to stop rotating. The spiral portion 52 has grasped the weed root, and then the handle 52 or the sleeve 2 can be easily grasped to pull the spiral portion 52 out of the ground, so that the root of the weed which is originally below the ground is easily pulled out of the ground.
  • the power source 4 is activated again to rotate the spiral portion 52 of the working head 5 against the spiral direction. Since the stripper 62 is subjected to the frictional force of the spiral portion 52, the direction of the tip end 54 of the working head 5 along the axis 30 is toward the ground. mobile. During this movement, the stripper 62 pushes the dirt and weeds attached to the spiral portion 52 to disengage the dirt and weeds from the spiral portion 52. When the stripper 62 is moved to the second position 12, all the dirt and weeds attached to the spiral portion 52 are peeled off. In this way, the dirt and weeds attached to the spiral portion 52 can be removed without labor, saving labor, and only the push switch 43 is required for control, which is very convenient to operate.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Soil Working Implements (AREA)

Description

除草工具 技术领域
本发明涉及一种除草工具。
背景技术
在草地或者花园中, 野生的植被例如像杂草总是随处可见。 杂草的生命力 往往很强, 它们会争夺草地或花园中有限的阳光和养料, 阻碍了正常种植的花 草的成长, 所以需要来处理这些杂草的办法。 一般清除杂草的方法都是在土地 的表面上进行的, 这样只能清除位于表面上的杂草枝叶, 并不能消除掉位于土 地中的杂草根, 经过适合的气候杂草又会从土地中重新生长出, 使得之前工作 花费的人力和财力白白损失。 所以最好将杂草连根拔除才能做到彻底地清除。
通常拔除杂草的方式有以下这么几种, 一种方法是直接的手工拔除, 操作 者的手抓住杂草的枝叶, 然后用力向外拔使根部拔出土地中。 但是这样纯手工 拔除比较费力, 而且效率较低, 在拔除杂草的过程中, 带出的泥土还会很容易 的溅到操作者的脚上, 弄脏操作者。 还有一种方法是借用手动工具, 如铁铲、 铁锹将杂草根铲出, 或者如美国公告专利 US48 19736 中揭示的三叉戟式的手动 工具, 工作头具有尖形的叉状结构, 便于工作头插入地面, 但是这些手动工具 的工作头往往比较笨重, 而且完全需要通过操作者的手动操控工作头以将杂草 根拔除, 这样对劳动者来说比较费力, 而且拔除杂草并不彻底, 效率十分低, 有时还会不小心对其他植物的根部造成损害。
还有一种如美国公告专利 US5261496揭示的手动工具, 其工作头为数根并 列排布的针刺, 操作时操作针刺刺入地面, 针刺拉住杂草的根部, 然后用力的 拔出。但是这种工具由于针刺很难一下对准杂草, 因此抓住杂草的效率并不高, 而且手动的操作操作比较费力, 效果并不好。
还有一种如美国公告专利 US5441 1 1 8揭示的手动工具, 其工作头具有多根 呈螺旋状且空间间隔的钢丝, 可旋转地插入地下, 钢丝可以拉住杂草根部, 然 后劳动者用力向上拔出, 这样固然可以比较有效地清除杂草, 但是需要劳动者 手动的旋转工具, 然后需要较大的力将工作头连带杂草根从泥土中拔出, 并且 还需要手动地将杂草根从工作头上清除, 这样操作还是相对比较费力, 不够简 便。
发明内容
有鉴于此, 本发明的目的之一在于提供一种操作方便、 省力的除草工具。 本发明的目的之一在于提供一种清理方便、 操作省力、 不会弄脏操作者的 除草工具。
本发明的目的之一在于提供一种清理方便、不影响工作头工作的除草工具。 本发明解决现有技术问题所采用的一种技术方案是: 一种除草工具, 用于 移除杂草, 除草工具包括壳体; 容納于壳体的马达; 与马达相连并沿纵向轴线 延伸的输出轴; 与输出轴连接的工作头, 工作头沿轴线螺旋延伸; 以及控制马 达转动的开关。
优选地, 开关可控制马达作正向旋转, 使工作头绕轴线作顺时针运动; 开 关可控制马达作反向旋转, 使工作头绕轴线作逆时针运动。
优选地, 工作头的转速为每分钟 200至 400转。
优选地, 除草工具还包括可控制工作头转速的调速机构。
优选地, 除草工具还包括为马达提供动力的直流电源。
优选地, 直流电源是锂电池包。
优选地, 直流电源的额定电压范围为 10仗至 36仗。
优选地, 除草工具包括用于握持的手柄。
优选地, 除草工具具有套接于输出轴并可伸縮的套筒, 手柄安装于套筒上。 优选地, 除草工具还包括连接壳体的延长杆, 手柄安装于延长杆上。
本发明解决现有技术问题所采用的另一种技术方案是: 一种除草工具, 用 于移除杂草, 其包括用于提供动力的动力源, 连接动力源并沿纵向轴线延伸的 输出轴, 与输出轴连接的工作头, 工作头可绕轴线作旋转运动, 除草工具还包 括剥离組件, 工作头的旋转运动驱动剥离組件沿轴线作线性运动。
优选地, 工作头沿轴线螺旋延伸。
优选地, 工作头工作头包括具有螺旋方向的螺旋部, 螺旋部可作顺螺旋方 向的顺时针转动和逆螺旋方向的逆时针运动。
优选地, 螺旋部的螺旋外径固定
优选地, 螺旋部的端部为变细的尖端。 优选地, 当螺旋部作顺时针方向旋转时, 螺旋部驱动剥离組件沿第一方向 运动; 当螺旋部作逆时针方向旋转时, 螺旋部驱动剥离組件沿与第一方向相反 的方向运动。
优选地, 剥离組件包括受螺旋部驱动沿轴线移动的剥离器, 剥离器具有与 螺旋部配合的配合部, 配合部垂直于轴线。
优选地, 配合部具有弧形轮廓。
优选地, 配合部具有螺旋形轮廓。
优选地, 剥离器具有分別位于配合部两侧的第一接触面和第二接触面, 当 螺旋部作顺时针方向旋转时, 第一接触面与螺旋部的表面接触; 当螺旋部作逆 时针方向旋转时, 第二接触面与螺旋部的表面接触。
优选地, 第一接触面具有与螺旋部的表面接触的第一接触点, 第二接触面 上具有与螺旋部的表面接触的第二接触点, 第一接触点与第二接触点关于轴线 对称。
本发明解决现有技术问题所采用的技术方案是: 一种除草工具, 用于移除 杂草, 其包括用于提供动力的动力源, 连接动力源并沿纵向轴线延伸的输出轴, 与输出轴连接的工作头, 工作头可绕纵向轴线作旋转运动, 除草工具还包括可 受工作头驱动的剥离組件, 当剥离組件位于第一位置时, 工作头绕第一旋转方 向旋转, 剥离組件不受工作头驱动; 当剥离組件位于第二位置时, 工作头绕与 第一旋转方向相反的方向旋转, 剥离組件不受工作头驱动。
优选地, 当剥离組件位于第一位置与第二位置之间的位置时, 工作头驱动 剥离組件运动。
优选地, 工作头包括沿轴线螺旋延伸的螺旋部, 当工作头与螺旋部的其中 一端部接触时, 剥离組件处于第一位置; 当工作头与螺旋部的另一端部接触时, 剥离組件处于第二位置。
优选地, 除草工具包括容納输出轴的套筒, 套筒与输出轴之间沿轴线方向 间隔地设有第一挡位套和第二挡位套, 第一挡位套和第二挡位套可限制剥离組 件沿轴线方向的运动。
优选地, 剥离組件包括位于第一挡位套与第二挡位套之间的绕轴套, 绕轴 套套接于套筒与输出轴之间, 绕轴套与第一挡位套之间设有第一弹性件, 绕轴 套与第二档位套之间设有第二弹性件, 第一弹性件与第二弹性件可分別使剥离 組件与螺旋部保持接触。
优选地, 剥离組件包括与绕轴套固定连接的滑动件, 滑动件位于套筒的表 面上并沿轴线移动。
优选地, 套筒的表面上具有沿纵向轴线延伸的滑槽, 穿过滑槽并可沿滑槽 移动的销轴一端连接滑动件, 另一端连接绕轴套。
优选地, 滑槽的长度大于或者等于第一位置与第二位置之间的距离。
优选地, 绕轴套的腰部具有围绕纵向轴线的环形槽, 滑动件上具有穿孔, 销轴穿过穿孔和环形槽将滑动件与绕轴套连接。
优选地, 剥离組件还包括与工作头接触的剥离器, 剥离器与滑动件通过连 接杆固定连接。
与现有技术相比, 本发明的一种有益效果为: 利用动力源驱动除草工具的 工作头工作, 从而操作方便, 而且除草效率高。
本发明的一种有益效果为: 利用工作头绕轴线的旋转运动驱动剥离組件沿 轴线作线性运动, 从而操作方便, 且清理工作头方便, 不会弄脏。
本发明的一种有益效果为: 剥离組件在第一位置或第二位置时, 工作头仍 可保持转动, 而剥离組件不受到工作头驱动, 而且避免对工作头工作造成影响。 附困说明
以上所述的本发明的目的、 技术方案以及有益效果可以通过下面的能够实 现本发明的具体实施例的详细描述, 同时结合附图描述而清楚地获得。
附图以及说明书中的相同的标号和符号用于代表相同的或者等同的元件。 图 1是本发明的一实施例的除草工具的示意图。
图 2是图 1所示的除草工具的沿 A-A线的剖面示意图。
图 3是图 2所示的除草工具的 A部分放大示意图。
图 4是图 2所示的除草工具的 B部分放大示意图。
图 5是图 1所示的除草工具的动力端的放大示意图。
图 6是本发明第二实施例的除草工具的动力端的示意图。
图 7是图 1所示的除草工具的工作端的放大示意图。
图 8是图 1所示的除草工具的工作头的正视图。 图 9是图 1所示的除草工具的剥离組件的示意图。
图 10是本发明矛三实施例的除草工具的剥离組件的示意图。
图 1 1是本发明矛四实施例的除草工具的剥离組件的示意图。
图 12是本发明矛四实施例的除草工具的剥离組件的 C部分放大示意图。 图 13是本发明矛四实施例的除草工具的剥离組件的爆炸示意图。
图 14 是图 1 所示的除草工具的工作端区域去掉部分套筒和滑动件的示意 图。
图 15 是本发明第五实施例的除草工具的工作端区域去掉部分套筒和滑动 件的示意图。
图 16是图 1所示的除草工具的第一挡位套区域去掉部分套同的示意图 图 17是图 1所示的除草工具的工作头顺时针旋转的示意图
图 18是图 1所示的除草工具的工作头逆时针旋转的示意图
图 19是图 1所示的除草工具的剥离組件达到第一位置的示 .¾图。
图 20是图 1所示的除草工具的剥离組件达到第二位置的示 .¾图。
1、 除草工具 2、 套筒 3、 输出轴
4、 动力源 5、 工作头 6、 剥离組件
7、 手柄 8、 延长杆 1 1、 第一位置
12、 第二位置 20、 定位孔 21、 容纳空间
23、 轴承 24、 轴承 25、 滑槽
26、 第一挡位套 27、 第二挡位套 28、 第一弹性件
29、 第二弹性件 30、 轴线 3 1、 动力端
32、 工作端 41、 壳体 42、 马达
43、 开关 5 1、 接头部 52、 螺旋部
53、 端部 54、 尖端 61、 滑动件
62、 剥离器 63、 连接杆 64、 绕轴套
65、 销轴 200、 外表面 201 、 内表面
23 1、 轴承孔 261、 环形槽 262 、 第一销轴
263、 第一穿孔 61 1、 穿孔 620 、 工作平面
621、 配合部 622、 第一侧面 623 、 第二侧面 624、 第一接触点 625、 第二接触点 626、 齿形结构
641、 通孔 642、 环形槽 642 '、 盲孔
643、 腰部 d、 内径 D、 螺旋外径
L、 螺距 S、 地面
具体实施方式
有关本发明的详细说明和技术内容, 配合附图说明如下, 然而所附附图仅 提供参考与说明, 并非用来对本发明加以限制。
参照图 1 至图 4所示, 除草工具 1呈纵长方向延伸, 其包括沿该纵长方向 延伸的套筒 2、 用于提供动力的动力源 4 和用于抓取杂草的工作头 5。 套筒 2 的内部具有容纳空间 21, 套筒 2的截面可为圆形或者方形或者三角形等形状。 套筒 2的容纳空间 21 内具有输出轴 3, 套筒 2套接于输出轴 3上。 输出轴 3具 有纵向的轴线 30, 该轴线 30 的延伸方向与除草工具 1 的纵长方向一致, 轴线 30与套筒 2 的中心轴线重合。 输出轴 3 可绕该轴线 30旋转, 其包括可选择地 操作的绕轴线 30 沿顺时针方向旋转或绕轴线 30 沿逆时针方向旋转。 输出轴 3 的一端为动力端 3 1, 另一端为工作端 32, 动力端 3 1 用于连接动力源 4, 工作 端 32用于连接工作头 5。
请参考图 5所示, 在套筒 2靠近动力端 3 1 —端的端部具有轴承 23, 轴承 23位于套筒 2和输出轴 3之间的容纳空间 21 内。 轴承 23 沿轴线 30方向具有 一定的厚度。 轴承 23主要支撑动力端 3 1 的作用。 轴承 23 的外部轮廓与套筒 2 的截面相配合, 使得轴承 23 与套筒 2保持紧配合, 这样使两者之间不产生相对 的移动。 当然在其他实施例中, 轴承 23和套筒 2还可以采用烏方连接或者其他 常见的固定连接方式。 轴承 23 的中央开设有轴承孔 23 1。 在本实施例中, 输出 轴 3的动力端 3 1 可从容纳空间 21 穿过轴承孔 23 1并与动力源 4连接。 动力端 3 1 与轴承孔 23 1松配, 如此输出轴 3 包括动力端 3 1 的转动不会受到轴承 23的 影响。 但轴承 23又可以限制动力端 3 1 沿套筒 2径向移动, 如此保持动力端 3 1 稳定的工作状态, 起到支撑动力端 3 1 的作用。 动力端 3 1 与轴承孔 23 1 可以是 常见球面滚珠接触配合。如图 2所示, 在套筒 2靠近工作端 32的另一端端部同 样包括轴承 24。 轴承 24 与轴承 23 的作用类似, 轴承 24 与输出轴 3和套筒 2 的配合方式也与轴承 23 类似。轴承 24与套筒 2紧配合, 轴承 24具有轴承孔可 让工作端 32或者工作头 5穿过。 在本实施例中, 输出轴 3的工作端 32穿过轴 承 24与工作头 5连接。 在其他实施例中, 工作端 32可位于容纳空间 21 内, 工 作头 5穿过轴承 24与工作端 32连接。
如图 5所示, 用于提供动力的动力源 4包括壳体 41, 壳体 41 内容纳有马 达 42, 马达 42用于提供动力。 马达 42与输出轴 3 的动力端 3 1 可传动的连接, 可将动力传递给输出轴 3 以供其旋转。 动力源 4上还具有开关 43, 开关 43 可 设于壳体 41上以便于操作。 开关 43 用于控制马达 42的转动。 在本实施例中, 开关 43 具有至少三个控制档位, 一档是控制马达 42作正向旋转, 使输出轴 3 绕轴线 30作顺时针旋转, 一档是控制马达 42作反向旋转, 使输出轴 3绕轴线 30作逆时针旋转, 还有一档是使马达 42停止旋转处于不工作状态。 当然, 开 关 43可以具有多种具体形式, 例如像拨钮式,旋钮式等常见的开关形式。 总之, 开关 43 可控制马达 42 启动或者关闭, 还可以分別控制输出轴 3 作绕轴线 30 的顺时针转动和逆时针转动。 另外, 开关 43上还可以设有用于方便调节工作头 转速的调速机构(图中未示出), 以调节适应不同大小尺寸的工作头正常工作。
为动力源 4提供动力的可以包括多种形式的动力源, 例如采用电池包作直 流电源驱动, 电池包可以具有充电的功能, 在较佳的实施例中, 电池包可以是 锂电池包。 若使用除草工具 1 没有足够的电力时, 可将电池包卸下进行充电。 若除草工具 1配合有多个电池包, 可在一个电池包充电的情况下, 用另外一个 电池包安装到除草工具 1进行工作, 届时两个电池包再互换下位置。 这样可实 现除草工具 1 长时间的工作, 十分的方便快捷。 为使工作头 5达到合适的工作 状态而需要一定的转速, 经实验证明, 工作头 5的转速在每分钟 200转至 400 转的时候达到比较合适的工作状况。 为使工作头 5維持在一定的转速, 在本实 施例中, 需要电池包的额定电压在 10仗以上。 同时出于使用电池包安全和避免 浪费的考虑, 电池包的额定电压在 36仗以下较佳, 当然, 额定电压也可以设定 在 36仗以上。 在最佳实施例中, 电池包的额定电压可以为 10.8仗、 14.4仗、 18仗等。
当然在其他实施例中, 除草工具 1还可以与外部的交流电源电性连接, 利 用交流电源提供动力给马达 42工作。
如图 5所示, 为方便操作者握持操作除草工具 1, 除草工具 1上还包括用 于握持的手柄 7。手柄 7可以固定安装在壳体 41上,其具有用于握持的握持部。 当然, 还可以有其他实施例, 手柄可安装在套筒 2上, 套筒 2可沿轴线 30伸縮 以改变长度, 以达到工作时比较舒适的握持位置。
如图 6所示, 为配合不同工作环境的使用, 除草工具 1还可以设有延长杆 8。 延长杆 8可以设置在壳体 41上或者套筒 2上, 延长杆 8的延伸轴线可以和 输出轴 3的轴线 30平行或者不平行, 延长杆 8上可以设置手柄 7, 如此可方便 使操作者从远处操作控制除草工具 1 清除杂草或者控制除草工具 1 清除位于花 坛内或者狹窄缝隙等操作者无法站立的区域内的杂草。
如图 7至图 8所示, 工作头 5包括接头部 5 1和螺旋部 52。 接头部 5 1 可固 定连接于工作端 32。 固定连接可以包括电焊接等其他常见的连接方式。 这样可 保持工作头 5的旋转运动与输出轴 3 的旋转运动保持同步一致。在本实施例中, 接头部 5 1 大致呈中空的锥台形状,沿轴线 30延伸并且朝螺旋部 52的方向逐渐 变细。 在其他实施例中, 工作端 32还可以和工作头 5的接头部 5 1 有其他形式 的配合固定, 例如工作端 32与接头部 5 1都设计成具有 iHJ凸结构, 使其套接配 合, 或者利用锁固元件将两者进行固定等方式。
工作头 5的螺旋部 52与接头部 5 1 系一体连接, 或者以焊接等其他常见的 方式固定连接。 在本实施例中, 螺旋部 52 由钢丝加工成螺旋形, 其沿着轴线 30螺旋延伸。 在本实施例中, 为使除草达到比较好的效果, 钢丝本身的内径 d 大致为 6毫米左右。 钢丝的一端端部 53 固定连接到接头部 5 1, 钢丝的另一端 被削尖处理过, 形成具有刚性斜面而尖锐锋利的尖端 54, 使螺旋部 52 可较为 方便的进入地面。 螺旋部 52的螺旋半径固定, 因此螺旋部 52大致呈圆筒形结 构。 在本实施例中, 螺旋部 52的螺旋外径 D大致为 36毫米左右。 当然, 在其 他实施例中, 螺旋部 52的螺旋半径还可以设置成不相等的情况, 例如半径大小 逐步变化, 这样螺旋部 52的形状大致呈圆锥形或者倒置的圆锥形。在本实施例 中, 螺旋部 52的螺旋之间具有一定螺距, 而不是无间隔的紧挨在一起, 如此可 使螺旋部 52 钻入地面更方便轻松。 在本实施例中, 螺旋部 52 的螺距 L 为 25 毫米左右。 此外, 螺旋部 52由刚性材料构成, 在本实施例中, 螺旋部 52的材 料是不锈钢、碳素钢等硬度较大的物质。 这样保证螺旋部 52在工作过程中不会 轻易的损坏。正常工作中, 动力源 4经输出轴 3可使工作头 5旋转的钻入地面, 螺旋部 52在旋转过程中包围住杂草根, 然后工作头 5被拉回到地面上。再把附 于工作头 5的杂草和泥土清除。
如图 9所示, 除草工具 1还包括剥离組件 6。 剥离組件 6位于靠近输出轴 3 的工作端 32。 剥离組件 6可受所述工作头 5 的旋转运动驱动而沿轴线 30 方向 作线性移动, 其用于将附着于工作头 5上的泥土或者杂草清理并脱离工作头 5。 剥离組件 6主要包括滑动件 61、 剥离器 62、 连接杆 63和绕轴套 64。 如图 9所 示的实施例中, 滑动件 61 呈中空的筒形结构, 滑动件 61套接于套筒 2的外表 面 200上并可沿轴线 30方向上下移动。 如图 14所示, 在套筒 2的容纳空间 21 内还设有绕轴套 64, 绕轴套 64设置于输出轴 3 与套筒 2之间, 并且位于轴承 23 与轴承 24之间。 绕轴套 64套接于输出轴 3上, 其中央沿轴线 30方向设有 通孔 641, 可让输出轴 3 穿过。 绕轴套 64沿轴线 30 方向具有一定的长度。 在 绕轴套 64的侧面腰部 643具有围绕输出轴 3轴线 30的环形槽 642。 在本实施 例中, 环形槽 642向内凹陷而具有一定的深度。 环形槽 642的宽度大致可容纳 螺栓或者销轴的宽度。环形槽 642与套筒 2的内表面 201相连。设置环形槽 642 的作用是使绕轴套 64方便与其他元件机械连接。
在其他的实施例中, 在绕轴套 64上也可以不设置环形槽 642, 而是在绕轴 套 64的侧面上沿轴线 30的径向的两个相对的方向上可设置盲孔 642 ',如图 15 所示。 盲孔 642 '沿径向延伸而具有一定的长度, 盲孔 642 '的一端则与套筒 2的 内表面 201 相连。 盲孔 642 '沿轴线 30对称设置。 当然在其他实施例中, 盲孔 642 '也可以设置成不对称的形式, 例如成 90度相交。 而且盲孔 642 '的数量也不 限于两个, 设置一个、三个或者三个以上也是可以的, 例如设置成三个各成 120 度的盲孔 642 '或者四个互成 90度的盲孔 642 '。
如图 9至图 17所示, 在套筒 2上设有滑槽 25, 滑槽 25 沿轴线 30方向延 伸而具有一定的长度。滑槽 25 的宽度大致可略大于销轴或者螺栓或者其他固定 件的宽度, 这样可让销轴或者螺栓穿过滑槽 25。 在本实施例中, 滑槽 25 和绕 轴套 64的环形槽 642相对应。 通槽 25和环形槽 642相连通。 其他实施例中, 套筒 2上均具有两个对应的滑槽 25, 两个滑槽 25相互平行且该两个滑槽 25 与 轴线 30共面。
如图 14所示, 在滑动件 61上具有穿孔 61 1, 穿孔 61 1设置在沿轴线 30的 径向的两个相对的方向上。 穿孔 61 1具有一定的长度, 在滑动件 61 套接于套筒 2上时, 穿孔 61 1 的一个端部和套筒 2上的滑槽 25连通; 穿孔 61 1 的另一个端 部则穿过滑动件 61 与外部环境连通。 如此, 环形槽 642、 通槽 25 和穿孔 61 1 呈一体连通。 借助固定件例如销轴 65从外部环境可依次穿过滑动件 61上的穿 孔 61 1、 套筒 2上的滑槽 25和绕轴套 64上的环形槽 642, 使销轴 65分別固定 连接绕轴套 64和滑动件 61, 同时其还受到滑槽 25的一定限位作用。 当滑动件 61 受到力的驱动, 滑动件 61 可带动销轴 65可在滑槽 25 中沿轴线 30的两个相 对的方向上移动,同时销轴 65 带动绕轴套 64沿着轴线 30方向在套筒 2的容纳 空间 21 内移动, 滑动件 61 在套筒 2 的表面沿轴线 30 方向移动。 由于有滑槽 25具有一定的长度对销轴 65移动起到限制作用, 使滑动件 61 及绕轴套 64沿 轴线 30方向的移动也是受到一定限制。 当然在可以采用其他的固定件, 例如在 其他实施例中, 可在环形槽 642和穿孔 61 1 中设置螺紋, 采用螺栓螺紋连接环 形槽 642、 滑槽 25和穿孔 61 1。
如图 9至图 13所示, 连接杆 63设置在滑动件 61和剥离器 62之间。 连接 杆 63主要起连接滑动件 61和剥离器 62的作用。连接杆 63 大致沿平行轴线 30 的方向延伸, 其一端固定连接滑动件 61, 另一端固定连接剥离器 62。 在图 9 所示的实施例中,连接杆 63位于套筒 2的外面。两个连接杆 63沿轴线 30对称, 且连接杆 63到轴线 30的距离大于螺旋部 52的螺旋外径 D, 这样连接杆 63不 会碰触到螺旋部 52, 使其不会妨碍到螺旋部 52 的运动。 在本实施例中, 连接 杆 63与滑动件 61和剥离器 62可以一体成型,也可以通过其他常见的固定连接 方式, 例如螺丝锁附等方式。
剥离組件 6 的剥离器 62位于工作头 5 的螺旋部 52 附近。 如图 9 至图 13 所示, 剥离器 62大致具有工作平面 620, 该工作平面 620 大致垂直于输出轴 3 的轴线 30。 剥离器 62在该工作平面 620上具有与螺旋部 52的表面进行配合的 配合部 621。 在本发明的一实施例中, 如图所示, 配合部 621 为半圆形的缺口, 其轮廓为半圆的弧形, 其半径略大于螺旋部 52的螺旋外径 R。 配合部 621 形成 的缺口正好能容纳部分螺旋部 52穿过, 而且在穿过时螺旋部 52的表面与配合 部 621 的轮廓保持配合。 在本发明的另一实施例中, 如图 1 1 至图 13所示, 配 合部 621 也大致为半圆形的缺口,其轮廓为沿轴线 30方向延伸的螺旋形。同时, 其螺旋形的轮廓上具有齿形结构 626。 配合部 621 形成的缺口同样能容纳部分 螺旋部 52穿过。 这样, 使配合部 621 的轮廓与螺旋部 52的表面接触面积更多, 同时齿形结构 626使剥离器 62的从螺旋部 52上剥离泥土和杂草的效果更佳。 当然, 还可以有其他的实施例, 如图 10所示, 剥离器 62还可以为具有弧形缺 口的平板。 总之, 剥离器 62的目的是使螺旋部 52在旋转的过程中与剥离器 62 相接触而产生沿轴线 30方向的摩檫力。 值得注意的是, 如图 17和图 1 8所示, 剥离器 62位于工作平面 620的两侧分別具有第一侧面 622和与之相对的第二侧 面 623。 其中, 第一侧面 622朝向工作头 5的尖端 54, 第二侧面 623朝向动力 源 4。 在正常工作中, 当螺旋部 52朝一方向做旋转运动时, 剥离器 62 的第一 侧面 622 与螺旋部 52 的表面接触, 并产生位于第一侧面 622上的第一接触点 624 ; 当螺旋部 52朝相反的另一方向做旋转运动时, 第二侧面 623与螺旋部 52 的表面接触, 并产生位于第二侧面 623 上的第二接触点 625。 第一接触点 624 和第二接触点 625并不在轴线 30上, 而是分別距离轴线 30存在偏移距离, 但 是第一接触点 624与第二接触点 625相对于轴线 30对称设置。
工作头 5 的螺旋部 52 由于设计成沿轴线 30 方向螺旋延伸, 故螺旋部 52 具有一个绕轴线 30的螺旋方向。在本实施例中, 其螺旋方向为如图 1 中所示的 沿轴线 30从动力源 4指向工作头 5的顺时针方向, 当然在其他实施例, 螺旋部 52可以被设计成螺旋方向为逆时针方向。 在本实施例中, 当输出轴 3顺着其螺 旋方向即顺时针旋转时, 工作头 5 的螺旋部 52 也做顺时针旋转。 由于螺旋部 52顺时针旋转, 以螺旋部 52作为参照系, 剥离器 62相对于螺旋部 52作逆时 针旋转。如图 17所示, 此时剥离器 62的第一侧面 622与螺旋部 52的螺旋表面 接触,并产生摩檫力推动剥离器 62沿图 17所示的箭头方向即沿轴线 30向动力 源 4的方向运动。
在本实施例中, 若螺旋部 52逆着该螺旋方向转动, 即螺旋部 52做逆时针 旋转时, 以螺旋部 52 作为参照系, 剥离器 62 相当于做顺时针运动。 如图 18 所示, 此时剥离器 62的第二侧面 623则与螺旋部 52的螺旋表面接触, 并产生 摩檫力推动剥离器 62沿图示的箭头方向即沿轴线 30向螺旋部 52的尖端 54方 向运动。 而剥离器 62与滑动件 61 是通过连接杆 63 固定连接的, 故剥离器 62 的运动会带动整个剥离組件 6作沿轴线 30向工作头 5方向或者向动力源 4方向 的直线运动。
如图 17和图 19所示, 当螺旋部 52顺时针旋转时, 剥离器 62受到摩檫力 的作用而持续地沿着轴线 30向动力源 4的方向移动。 经过移动一定的距离后, 当剥离器 62移动到靠近工作头 5的接头部 5 1 时, 螺旋部 52与剥离器 62的接 触在螺旋部 52的端部 53, 此时螺旋部 52对剥离器 62不产生继续推动其前进 的摩檫力, 因此剥离器 62被限制在很小的区间范围内运动。 故剥离器 62的直 线运动停止而螺旋部 52仍然可以受动力源 4驱动做顺时针旋转,此时剥离組件 6所在的位置即为如图 19所示的第一位置 1 1。如图 18和图 20所示, 当螺旋部 52逆时针旋转时, 剥离器 62 向工作头 5 的尖端 54方向移动。 当剥离器 62移 动到工作头 5的尖端 54时, 螺旋部 52与剥离器 62的接触在螺旋部 52的尖端 54, 此时螺旋部 52对剥离器 62不产生继续推动其前进的摩檫力, 因此剥离器 62被限制在很小的区间范围内运动。 故剥离器 62的直线运动停止而螺旋部 52 仍然可以逆时针旋转,此时剥离組件 6所在的位置即为如图 20所示的第二位置 12。 而剥离組件 62在第一位置 1 1 和第二位置 12之间时, 工作头 5对剥离器 62产生摩檫力, 驱动剥离器 62运动。 在本实施例中, 第一位置 1 1 与第二位置 12之间的距离为 10厘米, 这样的距离设置使工作头 5钻入地面形成的坑不会 太大太深, 能够拔出杂草的同时避免对土地造成伤害。 值得注意的是, 第一位 置 1 1 与第二位置 12之间的距离是与套筒 2的滑槽 25 的长度是相匹配的。
如图 1 至图 4 以及图 16所示,在套筒 2的容纳空间 21 内沿轴线 30方向还 间隔地具有第一挡位套 26和第二挡位套 27, 第一挡位套 26和第二挡位套 27 可以起到限制剥离組件 6运动的作用。 第一挡位套 26与第二挡位套 27也分別 设置于套筒 2和输出轴 3之间。 第一挡位套 26和第二挡位套 27分別位于绕轴 套 64的两侧, 并且位于轴承 23和轴承 24之间。 如图 4和图 16所示, 第一挡 位套 26的中央具有可让输出轴 3 穿过的第一穿孔 263。 与绕轴套 64相类似的 是, 第一挡位套 26的腰部具有环形槽 261, 环形槽 261 围绕轴线 30设置。 环 形槽 261 的宽度可容纳销轴或者螺栓或者其他固定件的宽度。 在套筒 2的表面 与环形槽 261 对应的地方设置定位孔 20, 使环形槽 261 和定位孔 20相连通。 第一销轴 262 可依次穿过定位孔 20和环形槽 261 后固定。 这样使第一挡位套 26和套筒 2位置相对固定的连接起来,第一挡位套 26无法沿轴线 30方向移动。 第二挡位套 27与第一挡位套 26的情况相类似, 同样通过销轴与套筒 2 固定连 接, 在此就不多加赘述。 当然, 本发明不限于销轴固定连接挡位套和套筒的方 式, 还可以通过凹凸结构卡接配合, 螺丝锁附等其他的固定连接方式。
如图 2所示, 在第一挡位套 26与绕轴套 64之间设置第一弹性件 28, 第一 弹性件 28环绕输出轴 3设置并且位于输出轴 3和套筒 2之间。 第一挡位套 26 与绕轴套 64之间的距离略大于第一弹性件 28的自由长度。 在本实施例中, 第 一弹性件 28的两端都属于自由端。当绕轴套 64朝向第一挡位套 26运动而使两 者之间的距离减小时, 第一弹性件 28 的一端可抵接于第一挡位套 26, 另一端 可抵接于绕轴套 64。 当第一弹性件 28被压縮时, 其可提供弹性的回复力给绕 轴套 64。 与之情况相类似的是, 第二弹性件 29设置在第二挡位套 27和绕轴套 64之间, 且同样位于输出轴 3和套筒 2之间。 第二弹性件 29的两端也都属于 自由端, 在绕轴套 64朝向第二挡位套 27运动而使两者之间的距离减小时, 其 一端抵接于第二挡位套 27, 另一端可抵接于绕轴套 64。 当然, 本发明不限于此, 弹性件的两端也可以一端固定连接到挡位套, 另一端固定连接到绕轴套 64 ; 或 者弹性件的一端属于自由端, 另一端固定连接到相对应的元件上。 第一弹性件 28的作用如下: 当剥离器 62位于第一位置 1 1 时, 绕轴套 64与第一挡位套 26 之间的距离小于第一弹性件 28的自由长度, 故第一弹性件 28处于压縮状态。 第一弹性件 28会对绕轴套 64产生沿轴线 30向工作头 5尖端 54方向的推力, 使剥离器 62与工作头 5的螺旋部 52保持接触,避免出现剥离器 62正好处于螺 旋部 52的螺旋间隔的空隙内的情形。 同理, 第二弹性件 29的作用是当剥离器 62位于第二位置 12 时, 产生沿轴线 30 向动力源 4 方向的推力, 使剥离器 62 与螺旋部 52保持接触, 避免剥离器 62位于螺旋部 52的螺旋间隔的空隙内。
下面详细介绍除草工具 1 的工作过程。 如图 19和图 20所示, 首先使工作 头 5对准杂草后置于地面 S上, 此时, 整个剥离組件 6也位于地面上。 然后启 动动力源 4, 通过输出轴 3使工作头 5 的螺旋部 52顺着螺旋方向转动, 螺旋部 52 逐步钻入地面一直可以到整个螺旋部 52都没入地下, 而在这过程中, 除草 組件 6的剥离器 62由于受到螺旋部 52的摩檫力而沿轴线 30向动力源 4的方向 即向上移动。 整个过程中, 剥离器 62都一直位于地面上。 当整个螺旋部 52没 入地下后, 剥离器 62处于第一位置 1 1。 此时, 开关 43控制工作头 5停止旋转, 螺旋部 52 已抓取住杂草根部, 然后可轻松的抓住手柄或者套筒 2将螺旋部 52 拔出地面, 这样原本位于地面以下的杂草根部即被很方便的拔出地面。
然后, 再次启动动力源 4, 使工作头 5的螺旋部 52逆着螺旋方向转动, 由 于剥离器 62受到螺旋部 52的摩檫力而沿轴线 30的工作头 5的尖端 54的方向 即向地面移动。 在这移动过程中, 剥离器 62推动附着在螺旋部 52上泥土和杂 草, 使泥土和杂草从螺旋部 52上脱离开。 当剥离器 62运动到第二位置 12时, 所有附着在螺旋部 52上的泥土和杂草都被剥离下来。 这样, 无需人力即可清除 掉附于螺旋部 52上的的泥土和杂草, 节省了人力, 而且只需要按动开关 43进 行控制, 操作十分方便。

Claims

1 . 一种除草工具, 用于移除杂草, 其特征在于: 所述除草工具包括壳体; 容 纳于所述壳体的马达; 与所述马达相连的输出轴, 所述输出轴沿级向轴线 延伸; 与所述输出轴连接的工作头, 所述工作头沿所述轴线螺旋延伸; 以 及控制所述马达转动的开关。
2. 根据权利要求 1 所述的除草工具, 其特征在于: 所述开关可控制马达作正 向旋转, 使所述工作头绕所述轴线作顺时针运动; 所述开关可控制马达作 反向旋转, 使所述工作头绕所述轴线作逆时针运动。
3. 根据权利要求 2 所述的除草工具, 其特征在于: 所述工作头的转速为每分 钟 200至 400转。
4. 根据权利要求 2 所述的除草工具 其特征在于: 所述除草工具还包括可控 制所述工作头转速的调速机构。
5. 根据权利要求 1 所述的除草工具 其特征在于: 所述除草工具还包括为所 述马达提供动力的直流电源。
6. 根据权利要求 5所述的除草工具, 其特征在于: 所述直流电源是锂电池包。
7. 根据权利要求 6 所述的除草工具 其特征在于 所述直流电源的额定电压 范围为 10仗至 36仗。
8. 根据权利要求 1 所述的除草工具 其特征在于: 所述除草工具包括用于握 持的手柄。
9. 根据权利要求 8 所述的除草工具 其特征在于: 所述除草工具具有套接于 所述输出轴并可伸縮的套筒, 所述手柄安装于所述套筒上。
10.根据权利要求 8 所述的除草工具, 其特征在于: 所述除草工具还包括连接 所述壳体的延长杆, 所述手柄安装于所述延长杆上。
1 1 . 一种除草工具, 用于移除杂草, 其包括输出轴, 所述输出轴沿纵向轴线延 伸, 与所述输出轴连接的工作头, 所述工作头可绕所述轴线作旋转运动, 其特征在于: 所述除草工具还包括剥离組件, 所述工作头的旋转运动驱动 所述剥离組件沿所述轴线作线性运动。
12.根据权利要求 1 所述的除草工具, 其特征在于: 所述工作头沿所述轴线螺 旋延伸。 根据权利要求 2 所述的除草工具, 其特征在于: 所述工作头包括具有螺旋 方向的螺旋部, 所述螺旋部可作顺所述螺旋方向的顺时针运动和逆所述螺 旋方向的逆时针运动。
根据权利要求 3 所述的除草工具, 其特征在于: 所述螺旋部的螺旋外径固 定。
根据权利要求 3 所述的除草工具, 其特征在于: 当所述螺旋部作所述顺时 针方向运动时, 所述螺旋部驱动所述剥离組件沿第一方向运动; 当所述螺 旋部作所述逆时针方向运动时, 所述螺旋部驱动所述剥离組件沿与所述第 一方向相反的方向运动。
根据权利要求 5 所述的除草工具, 其特征在于: 所述剥离組件包括受所述 螺旋部驱动沿所述轴线移动的剥离器, 所述剥离器具有与所述螺旋部配合 的配合部, 所述配合部垂直于所述轴线。
根据权利要求 6所述的除草工具, 其特征在于: 所述配合部具有弧形轮廓。 根据权利要求 6 所述的除草工具, 其特征在于: 所述配合部具有螺旋形轮 廓。
根据权利要求 7 或 8 中所述的除草工具, 其特征在于: 所述剥离器具有位 于所述配合部两侧的第一接触面和第二接触面, 当所述螺旋部作所述顺时 针方向旋转时, 所述第一接触面与所述螺旋部的表面接触; 当所述螺旋部 作所述逆时针方向旋转时, 所述第二接触面与所述螺旋部的表面接触。 根据权利要求 9 所述的除草工具, 其特征在于: 所述第一接触面具有与所 述螺旋部的表面接触的第一接触点, 所述第二接触面上具有与所述螺旋部 的表面接触的第二接触点, 所述第一接触点与所述第二接触点关于所述轴 线对称。
—种除草工具, 用于移除杂草, 其包括输出轴, 所述输出轴沿纵向轴线延 伸, 与所述输出轴连接的工作头, 所述工作头可绕所述轴线作旋转运动, 其特征在于:所述除草工具还包括可受所述工作头驱动的剥离組件, 当所述 剥离組件位于第一位置时, 所述工作头绕第一旋转方向旋转, 所述剥离組 件被限制在所述第一位置附近; 当所述剥离組件位于第二位置时, 所述工 作头绕与所述第一旋转方向相反的方向旋转, 所述剥离組件被限制在所述 第二位置附近。
根据权利要求 1 所述的除草工具, 其特征在于: 当剥离組件位于所述第一 位置与所述第二位置之间的位置时, 所述工作头驱动所述剥离組件运动。 根据权利要求 2 所述的除草工具, 其特征在于: 所述工作头包括沿所述轴 线螺旋延伸的螺旋部, 当所述剥离組件与所述螺旋部的其中一端部接触时, 所述剥离組件处于所述第一位置; 当所述剥离組件与所述螺旋部的另一端 部接触时, 所述剥离組件处于所述第二位置。
根据权利要求 3 所述的除草工具, 其特征在于: 所述除草工具包括容纳所 述输出轴的套筒, 所述套筒与所述输出轴之间沿所述轴线方向间隔地设有 第一挡位套和第二挡位套, 所述第一挡位套与所述第二挡位套可限制所述 剥离組件沿所述轴线方向的运动。
根据权利要求 4 所述的除草工具, 其特征在于: 所述剥离組件包括位于所 述第一挡位套与所述第二挡位套之间的绕轴套, 所述绕轴套套接于所述套 筒与所述输出轴之间, 所述绕轴套与所述第一挡位套之间设有第一弹性件, 所述绕轴套与所述第二档位套之间设有第二弹性件, 所述第一弹性件与所 述第二弹性件可分別使所述剥离組件与所述螺旋部保持接触。
根据权利要求 5 所述的除草工具, 其特征在于: 所述剥离組件包括与所述 绕轴套固定连接的滑动件, 所述滑动件位于所述套筒的表面上并沿所述纵 向轴线移动。
根据权利要求 6 所述的除草工具, 其特征在于: 所述套筒具有沿所述纵向 轴线延伸的滑槽, 穿过所述滑槽并可沿所述滑槽移动的销轴一端连接所述 滑动件, 另一端连接所述绕轴套。
根据权利要求 7 所述的除草工具, 其特征在于: 所述滑槽的长度大于或者 等于所述第一位置与所述第二位置之间的距离。
根据权利要求 7 所述的除草工具, 其特征在于: 所述绕轴套具有围绕所述 纵向轴线的环形槽, 所述滑动件上具有穿孔, 所述销轴穿过所述穿孔和所 述环形槽将所述滑动件与所述绕轴套连接。
根据权利要求 7 所述的除草工具, 其特征在于: 所述剥离組件还包括与所 述螺旋部接触的剥离器, 所述剥离器与所述滑动件通过连接杆固定连接。
PCT/CN2011/079558 2010-09-11 2011-09-13 除草工具 WO2012031571A1 (zh)

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CN201010286531.3A CN102396305B (zh) 2010-09-11 2010-09-11 具有剥离组件的除草工具
CN201010286531.3 2010-09-11
CN201010286526.2 2010-09-11
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